FN Thomson Reuters Web of Science™ VR 1.0 PT J AU MORETTO, LG PHAIR, L TSO, K JING, K WOZNIAK, GJ SOUZA, RT BOWMAN, DR CARLIN, N GELBKE, CK GONG, WG KIM, YD LISA, MA LYNCH, WG PEASLEE, GF TSANG, MB ZHU, F AF MORETTO, LG PHAIR, L TSO, K JING, K WOZNIAK, GJ SOUZA, RT BOWMAN, DR CARLIN, N GELBKE, CK GONG, WG KIM, YD LISA, MA LYNCH, WG PEASLEE, GF TSANG, MB ZHU, F TI ARE MULTIFRAGMENT EMISSION PROBABILITIES REDUCIBLE TO AN ELEMENTARY BINARY EMISSION PROBABILITY SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEAVY-ION COLLISIONS; FRAGMENT EMISSION; COMPOUND-NUCLEUS; TIME-SCALES; HOT NUCLEI; ENERGY; DECAY C1 MICHIGAN STATE UNIV,NATL SUPERCONDUCTING CYCLOTRON LAB,E LANSING,MI 48824. MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824. RP MORETTO, LG (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. RI Carlin Filho, Nelson/C-2187-2012; Lynch, William/I-1447-2013; deSouza, Romualdo/P-5862-2015 OI Lynch, William/0000-0003-4503-176X; deSouza, Romualdo/0000-0001-5835-677X NR 28 TC 52 Z9 53 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 27 PY 1995 VL 74 IS 9 BP 1530 EP 1533 DI 10.1103/PhysRevLett.74.1530 PG 4 WC Physics, Multidisciplinary SC Physics GA QJ431 UT WOS:A1995QJ43100009 ER PT J AU FU, GY PARK, W AF FU, GY PARK, W TI NONLINEAR HYBRID SIMULATION OF THE TOROIDICITY-INDUCED ALFVEN EIGENMODE SO PHYSICAL REVIEW LETTERS LA English DT Article ID MAGNETOHYDRODYNAMICS; INSTABILITIES RP FU, GY (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. NR 12 TC 52 Z9 52 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 FEB 27 PY 1995 VL 74 IS 9 BP 1594 EP 1596 DI 10.1103/PhysRevLett.74.1594 PG 3 WC Physics, Multidisciplinary SC Physics GA QJ431 UT WOS:A1995QJ43100025 ER PT J AU COOLEY, C ARONSON, MC FISK, Z CANFIELD, PC AF COOLEY, C ARONSON, MC FISK, Z CANFIELD, PC TI SMB6 - KONDO INSULATOR OR EXOTIC METAL SO PHYSICAL REVIEW LETTERS LA English DT Article ID VALENT SMB6; RESISTIVITY; PRESSURE; CERU2SI2; SYSTEMS; MODEL C1 FLORIDA STATE UNIV,NATL HIGH MAGNET FIELD LAB,TALLAHASSEE,FL 32306. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP COOLEY, C (reprint author), UNIV MICHIGAN,HARRISON M RANDALL LAB PHYS,ANN ARBOR,MI 48109, USA. RI Canfield, Paul/H-2698-2014; Cooley, Jason/E-4163-2013 NR 29 TC 129 Z9 129 U1 3 U2 21 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 FEB 27 PY 1995 VL 74 IS 9 BP 1629 EP 1632 DI 10.1103/PhysRevLett.74.1629 PG 4 WC Physics, Multidisciplinary SC Physics GA QJ431 UT WOS:A1995QJ43100034 ER PT J AU LU, L CRESPI, VH FUHRER, MS ZETTL, A COHEN, ML AF LU, L CRESPI, VH FUHRER, MS ZETTL, A COHEN, ML TI UNIVERSAL FORM OF HALL-COEFFICIENT IN K AND RB DOPED SINGLE-CRYSTAL C-60 SO PHYSICAL REVIEW LETTERS LA English DT Article ID ORIENTATIONAL DISORDER; ELECTRONIC TRANSPORT; K3C60; SUPERCONDUCTIVITY; CONDUCTIVITY; STATES; RB3C60; FILMS C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. CHINESE ACAD SCI,INST PHYS,BEIJING 100080,PEOPLES R CHINA. RP LU, L (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. RI Fuhrer, Michael/E-7634-2010; Zettl, Alex/O-4925-2016; OI Fuhrer, Michael/0000-0001-6183-2773; Zettl, Alex/0000-0001-6330-136X; Crespi, Vincent/0000-0003-3846-3193 NR 30 TC 7 Z9 7 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 FEB 27 PY 1995 VL 74 IS 9 BP 1637 EP 1640 DI 10.1103/PhysRevLett.74.1637 PG 4 WC Physics, Multidisciplinary SC Physics GA QJ431 UT WOS:A1995QJ43100036 ER PT J AU KIRYUKHIN, V KEIMER, B MONCTON, DE AF KIRYUKHIN, V KEIMER, B MONCTON, DE TI DIRECT OBSERVATION OF A MAGNETIC-FIELD-INDUCED COMMENSURATE-INCOMMENSURATE TRANSITION IN A SPIN-PEIERLS SYSTEM SO PHYSICAL REVIEW LETTERS LA English DT Article ID DIMERIZATION; SOLITONS; PHASE C1 ARGONNE NATL LAB,ADV PHOTON SOURCE,ARGONNE,IL 60439. RP KIRYUKHIN, V (reprint author), PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544, USA. NR 20 TC 34 Z9 34 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 FEB 27 PY 1995 VL 74 IS 9 BP 1669 EP 1672 DI 10.1103/PhysRevLett.74.1669 PG 4 WC Physics, Multidisciplinary SC Physics GA QJ431 UT WOS:A1995QJ43100044 ER PT J AU KANNER, GS FROLOV, S VARDENY, ZV AF KANNER, GS FROLOV, S VARDENY, ZV TI DETECTION OF ELECTRONIC EXCITED-STATES IN CONJUGATED POLYMERS BY PICOSECOND TRANSIENT STRAIN SPECTROSCOPY SO PHYSICAL REVIEW LETTERS LA English DT Article ID NONLINEAR OPTICAL-RESPONSE; THIN-FILMS; POLYACETYLENE; GENERATION; ELECTROABSORPTION; POLYTHIOPHENE; FLUORESCENCE; DYNAMICS; PULSES; GAP C1 UNIV UTAH,DEPT PHYS,SALT LAKE CITY,UT 84112. RP KANNER, GS (reprint author), LOS ALAMOS NATL LAB,CST4,MS G755,POB 1663,LOS ALAMOS,NM 87545, USA. NR 27 TC 13 Z9 13 U1 2 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 FEB 27 PY 1995 VL 74 IS 9 BP 1685 EP 1688 DI 10.1103/PhysRevLett.74.1685 PG 4 WC Physics, Multidisciplinary SC Physics GA QJ431 UT WOS:A1995QJ43100048 ER PT J AU FORGAN, EM CUBITT, R YETHIRAJ, M CHRISTEN, DK PAUL, DM LEE, SL GAMMEL, PL AF FORGAN, EM CUBITT, R YETHIRAJ, M CHRISTEN, DK PAUL, DM LEE, SL GAMMEL, PL TI VORTEX DYNAMICS AND MELTING IN NIOBIUM - COMMENT SO PHYSICAL REVIEW LETTERS LA English DT Note ID LATTICE C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. UNIV WARWICK,DEPT PHYS,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND. UNIV ZURICH,INST PHYS,CH-8057 ZURICH,SWITZERLAND. AT&T BELL LABS,MURRAY HILL,NJ 07974. RP FORGAN, EM (reprint author), UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. RI cubitt, robert/B-9408-2008; Lee, Stephen/G-9791-2016 OI Lee, Stephen/0000-0002-2020-3310 NR 8 TC 3 Z9 3 U1 0 U2 0 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 FEB 27 PY 1995 VL 74 IS 9 BP 1697 EP 1697 DI 10.1103/PhysRevLett.74.1697 PG 1 WC Physics, Multidisciplinary SC Physics GA QJ431 UT WOS:A1995QJ43100054 ER PT J AU RUBENCHIK, AM SHAPIRO, EG TURITSYN, SK AF RUBENCHIK, AM SHAPIRO, EG TURITSYN, SK TI ON THE MUTUAL INTERACTION OF SELF-FOCUSING AND STIMULATED SCATTERING SO PHYSICS LETTERS A LA English DT Article AB The interaction of the light self-focusing and stimulated Brillouin scattering (SBS) in a nonlinear medium is considered. We demonstrate that SBS seeded from the rear surface of the medium can suppress the self-focusing. As a result, a power much larger than the critical one can be transmitted through the crystal. The self-focusing suppression results in enhanced SBS and a transversal laser beam structure modification. C1 RUSSIAN ACAD SCI,INST AUTOMAT & ELECTROMETRY,NOVOSIBIRSK 630090,RUSSIA. RP RUBENCHIK, AM (reprint author), LAWRENCE LIVERMORE NATL LAB,DEPT APPL SCI,POB 808,L-794,LIVERMORE,CA 94550, USA. NR 7 TC 3 Z9 3 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 FEB 27 PY 1995 VL 198 IS 3 BP 201 EP 204 DI 10.1016/0375-9601(94)01006-G PG 4 WC Physics, Multidisciplinary SC Physics GA QJ213 UT WOS:A1995QJ21300007 ER PT J AU MITCHELL, BE LELE, SK MOIN, P AF MITCHELL, BE LELE, SK MOIN, P TI DIRECT COMPUTATION OF THE SOUND FROM A COMPRESSIBLE CO-ROTATING VORTEX PAIR SO JOURNAL OF FLUID MECHANICS LA English DT Article ID AERODYNAMIC SOUND; EMISSION; GENERATION; COLLISION; MERGER; RINGS AB The far-field sound generated by compressible co-rotating vortices is computed by direct computation of the unsteady compressible Navier-Stokes equations on a computational domain that extends to two acoustic wavelengths in all directions. The vortices undergo a period of co-rotation followed by a sudden merger. The directly computed far-field sound is compared to the prediction of the acoustic analogy due to Mohring (1978, 1979), a modified form of the analogy developed by Lighthill (1952), and an acoustic analogy derived by Powell (1964). All three predictions are in excellent agreement with the simulation. Results of far-field pressure fluctuations from an acoustically non-compact, co-rotating vortex pair are also presented. In this case, the vortex sound theory over-predicts the sound by 65% in accordance with the analysis of Yates (1978). C1 STANFORD UNIV,DEPT AERONAUT & ASTRONAUT,STANFORD,CA 94305. NASA,AMES RES CTR,AMES,IA. RP MITCHELL, BE (reprint author), STANFORD UNIV,DEPT MECH ENGN,STANFORD,CA 94305, USA. NR 33 TC 82 Z9 89 U1 0 U2 3 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD FEB 25 PY 1995 VL 285 BP 181 EP 202 DI 10.1017/S0022112095000504 PG 22 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA QK091 UT WOS:A1995QK09100008 ER PT J AU MCCORD, TB MORRIS, J PERSING, D TAGLIAFERRI, E JACOBS, C SPALDING, R GRADY, L SCHMIDT, R AF MCCORD, TB MORRIS, J PERSING, D TAGLIAFERRI, E JACOBS, C SPALDING, R GRADY, L SCHMIDT, R TI DETECTION OF A METEOROID ENTRY INTO THE EARTHS ATMOSPHERE ON FEBRUARY 1, 1994 SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article AB Infrared and visible wavelength sensors on board platforms operated by the U.S. Department of Defense detected an energy release over the central Pacific Ocean on February 1, 1994, estimated to be of the order of at least tens of kilotons of TNT. The event has been assessed by the Defense and Intelligence Community to be a meteoroid entry. The object broke up into several fragments and created debris clouds which were tracked for over an hour. The meteoroid entered at about 24 km/s and an angle of approximately 45 degrees on a heading of approximately 300 degrees. From this, the object's heliocentric orbit just prior to entry was calculated to have a semimajor axis of about 1.6 AU, an eccentricity of about 0.65, and inclination of 2.1 degrees. The radiant energy released is modeled to be between 1.4 x 10(13) J and 2.6 x 10(14) J or equivalent to 3.4 to 63 kilotons of TNT, and the total kinetic energy of the meteoroid is estimated to be in the range 1.4 x 10(14) J to 2.6 x 10(15) J or equivalent to 34 to 630 kilotons of TNT. From the kinetic energy and if we model the object as composed of silicates with a density of 3.5 g/cm(3), we derive a mass range of 5 x 10(5) to 9 x 10(6) kg and a diameter range of 6 to 17 m. C1 SETS TECHNOL INC,MILILANI,HI. NATL AIR INTELLIGENCE CTR,WRIGHT PATTERSON AFB,OH 45433. ET SPACE SYST,CAMARILLO,CA 93012. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP MCCORD, TB (reprint author), UNIV HAWAII,HAWII INST GEOPHYS & PLANETOL,HONOLULU,HI 96822, USA. NR 3 TC 19 Z9 19 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD FEB 25 PY 1995 VL 100 IS E2 BP 3245 EP 3249 DI 10.1029/94JE02802 PG 5 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QK383 UT WOS:A1995QK38300002 ER PT J AU WOLF, SF LIPSCHUTZ, ME AF WOLF, SF LIPSCHUTZ, ME TI CHEMICAL STUDIES OF H CHONDRITES .4. NEW DATA AND COMPARISON OF ANTARCTIC SUITES SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article ID UNEQUILIBRATED ORDINARY CHONDRITES; MOBILE TRACE-ELEMENTS; PARENT BODY; ABUNDANCE PATTERNS; METEORITES; AGES; EARTH; IDENTIFICATION; METAMORPHISM; POPULATIONS AB We report data for the trace elements An, Co; Sb, Ga, Rb; Ag, Se, Co, Te; Zn, Cd, Bi, Tli and In (ordered by putative volatility during nebular condensation and accretion) determined by neutron activation analysis in 13 H5 chondrites from Victoria land and 20 H4-6 chondrites from Queen Maud Land, Antarctica. These and earlier results provide Antarctic sample suites of 34 chondrites from Victoria Land and 25 from Queen Maud Land. Treatment of data for the most volatile 10 elements (Rb --> In) in these suites by multivariate statistical techniques more robust, as well as more conservative, than conventional linear discriminant analysis and logistic regression demonstrates that compositions differ al marginally significant levels. This difference cannot be explained by trivial (terrestrial) causes and becomes more significant, despite the smaller size of the database, when comparisons are limited to data from a single analyst End when all upper limits are climinated from consideration. The Victoria Land and Queen Maud Land suites have different mean terrestrial ages (similar to 300) kyr rind similar to 100 kyr, respectively) and age distributions, suggesting that a time-dependent variation of chondritic sources with different thermal histories is responsible. As a result, these two Antarctic suites are, on average, chemically distinguishable from each other. Since H chondrites serve as a paradigm for other meteorite classes, these results indicate that the near-Earth populations of planetary materials varied with time on the 10(5)-year timescale. C1 PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907. RP WOLF, SF (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 77 TC 22 Z9 22 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD FEB 25 PY 1995 VL 100 IS E2 BP 3297 EP 3316 DI 10.1029/94JE03365 PG 20 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QK383 UT WOS:A1995QK38300007 ER PT J AU MICHLOVICH, ES WOLF, SF WANG, MS VOGT, S ELMORE, D LIPSCHUTZ, ME AF MICHLOVICH, ES WOLF, SF WANG, MS VOGT, S ELMORE, D LIPSCHUTZ, ME TI CHEMICAL STUDIES OF H CHONDRITES .5. TEMPORAL VARIATIONS OF SOURCES SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article ID NON-ANTARCTIC METEORITES; PARENT BODY; BREAKUP; POPULATIONS; EARTH; AGES AB We report Cl-36 (301-kyr half-life) data obtained by accelerator mass spectrometry allowing nominal terrestrial ages to be determined for 39 Antarctic H4-6 chondrites for which contents of volatile trace elements are known. The compositional difference between these Antarctic meteorites and 58 non-Antarctic falls increases with terrestrial age and, using multivariate statistical techniques, becomes highly significant for Antarctic samples with ages >50 kyr. The compositional difference is inconsistent with trivial causes such as weathering and seems to reflect differences in thermal histories of parent sources. Temporal source variations for the H chondrite flux on Earth thus exist not only on a short-term, 40 years, basis (Dodd et al., 1993) but also on a long-term, >50 kyr, basis. C1 PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907. ARGONNE NATL LAB,ARGONNE,IL 60439. RP MICHLOVICH, ES (reprint author), PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907, USA. NR 34 TC 20 Z9 20 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD FEB 25 PY 1995 VL 100 IS E2 BP 3317 EP 3333 DI 10.1029/94JE03366 PG 17 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QK383 UT WOS:A1995QK38300008 ER PT J AU WOLF, SF LIPSCHUTZ, ME AF WOLF, SF LIPSCHUTZ, ME TI CHEMICAL STUDIES OF H CHONDRITES .6. ANTARCTIC NON-ANTARCTIC COMPOSITION DIFFERENCES REVISITED SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article ID PARENT BODY; METEORITES; POPULATIONS; BREAKUP; AGES AB We report data for the trace elements Au, Ca, Sb, Ga, Rb, Ag, Se, Cs, Te, Zn, Cd, Bi, Tl, and In (ordered by putative volatility during nebular condensation and accretion) determined by radiochemical neutron activation analysis of 14 additional H5 and H6 chondrite falls. Data for the 10 most volatile elements (Rb --> In) treated by the multivariate techniques of linear discriminant analysis and logistic regression in these and 44 other falls are compared with those for 59 H4-6 chondrites from Antarctica. Various populations are tested by the multivariate techniques, using the previously developed method of randomization-simulation to assess Significance levels. An earlier conclusion, based on fewer samples, that H4-6 chondrite falls are compositionally distinguishable from the Antarctic suite is verified by the additional data. This distinctiveness is highly significant because of the presence of samples from Victoria Land in the Antarctic population, which differ compositionally from falls beyond any reasonable doubt. However, it cannot be. proven unequivocally that falls and Antarctic samples from Queen Maud Land ark compositionally distinguishable. Trivial causes (e.g., analyst bias, weathering) cannot explain the Victoria Land (Antarctic)non-Antarctic compositional difference for paradigmatic H4-6 chondrites. This seems ito reflect a time-dependent variation of near-Earth meteoroid source regions differing in average thermal history. C1 PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907. RP WOLF, SF (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 25 TC 18 Z9 18 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD FEB 25 PY 1995 VL 100 IS E2 BP 3335 EP 3349 DI 10.1029/94JE03367 PG 15 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QK383 UT WOS:A1995QK38300009 ER PT J AU LITTLEJOHN, D CHANG, SG AF LITTLEJOHN, D CHANG, SG TI AN XPS STUDY OF NITROGEN-SULFUR COMPOUNDS SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA LA English DT Article DE NITROGEN; SULFUR; XPS ID NITROSYL COMPLEXES; AQUEOUS-SOLUTION; ACID-HYDROLYSIS; KINETICS; ION; REDUCTION; NITRITE AB An X-ray photoelectron spectroscopy study has been conducted on a series of nitrogen-sulfur compounds to characterize the charge shifts on the nitrogen and sulfur atoms in the molecules. In all of the compounds, the sulfur was found to have a Is binding energy equivalent to a formal charge of +6. The nitrogen 1s binding energies varied in a systematic manner that reflected the change in oxidation state. The XPS results have been used to provide insight into the formation of these compounds in two reaction systems. RP LITTLEJOHN, D (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV ENERGY & ENVIRONM,BERKELEY,CA 94720, USA. NR 19 TC 17 Z9 17 U1 5 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0368-2048 J9 J ELECTRON SPECTROSC JI J. Electron Spectrosc. Relat. Phenom. PD FEB 24 PY 1995 VL 71 IS 1 BP 47 EP 50 DI 10.1016/0368-2048(94)02244-5 PG 4 WC Spectroscopy SC Spectroscopy GA QJ094 UT WOS:A1995QJ09400006 ER PT J AU WANG, GJ VOLKOW, ND LOGAN, J FOWLER, JS SCHLYER, D MACGREGOR, RR HITZEMANN, RJ GUR, RC WOLF, AP AF WANG, GJ VOLKOW, ND LOGAN, J FOWLER, JS SCHLYER, D MACGREGOR, RR HITZEMANN, RJ GUR, RC WOLF, AP TI EVALUATION OF AGE-RELATED-CHANGES IN SEROTONIN 5-HT2 AND DOPAMINE D-2 RECEPTOR AVAILABILITY IN HEALTHY-HUMAN SUBJECTS SO LIFE SCIENCES LA English DT Letter DE SEROTONIN 5-HT2; DOPAMINE D-2 AGING ID HUMAN-BRAIN POSTMORTEM; AUTORADIOGRAPHIC ANALYSIS; C-11 RACLOPRIDE; BINDING-SITES; PET; TOMOGRAPHY; DECREASE; SYSTEMS; RAT AB We assessed the relation between serotonin 5-HT2 receptor availability and aging and compared it with that for dopamine D-2 receptors on 19 healthy male volunteers (age range, 21-49 years) using positron emission tomography (PET) and F-18 N-methylspiperone (NMS). 5-HT2 Receptor availability was obtained using the ratio of the distribution volume in the region of interest to that in the cerebellum (B-max'/K-d' + 1). 5-HT2 Receptor measures were obtained in frontal and occipital cortices. D-2 receptor availability in striatum was measured using the ''ratio index''. 5-HT2 Receptor availability decreased significantly with age. This effect was significantly more accentuated for 5-HT2 receptor availability in the frontal (r = 0.92, p less than or equal to 0.0001) than in the occipital (r = 0.67, r less than or equal to 0.0016) cortex (df = 1, p < 0.025). Dopamine D-2 receptors were also found to decrease significantly with age (r = 0.63, p less than or equal to 0.007). In a given subject, striatal D-2 receptor availability significantly correlated with 5-HT2 receptor availability in the frontal (r = 0.51, p less than or equal to 0.035) but not in the occipital cortex. These results document a decline in 5-HT2 and D-2 receptor availability with age and showed an association between frontal 5-HT2 and striatal D-2 receptors. C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. SUNY STONY BROOK,DEPT RADIOL,STONY BROOK,NY 11794. SUNY STONY BROOK,DEPT PSYCHIAT,STONY BROOK,NY 11794. UNIV PENN,DEPT PSYCHIAT,PHILADELPHIA,PA 19119. RP WANG, GJ (reprint author), BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973, USA. NR 21 TC 21 Z9 22 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0024-3205 J9 LIFE SCI JI Life Sci. PD FEB 24 PY 1995 VL 56 IS 14 BP PL249 EP PL253 PG 5 WC Medicine, Research & Experimental; Pharmacology & Pharmacy SC Research & Experimental Medicine; Pharmacology & Pharmacy GA QJ273 UT WOS:A1995QJ27300012 ER PT J AU NUCKOLLS, JH AF NUCKOLLS, JH TI POST-COLD-WAR NUCLEAR DANGERS - PROLIFERATION AND TERRORISM SO SCIENCE LA English DT Editorial Material RP NUCKOLLS, JH (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 6 TC 3 Z9 3 U1 1 U2 1 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 FEB 24 PY 1995 VL 267 IS 5201 BP 1112 EP 1114 DI 10.1126/science.267.5201.1112 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QJ237 UT WOS:A1995QJ23700023 PM 17789191 ER PT J AU KRAUSS, RM AF KRAUSS, RM TI DENSE LOW-DENSITY LIPOPROTEINS AND CORONARY-ARTERY DISEASE SO AMERICAN JOURNAL OF CARDIOLOGY LA English DT Article ID LDL SUBCLASS PHENOTYPES; FAMILIAL COMBINED HYPERLIPIDEMIA; INSULIN-RESISTANCE; APOLIPOPROTEIN-B; RECEPTOR LOCUS; PARTICLE-SIZE; PATTERN-B; WOMEN; RISK; HYPERINSULINEMIA AB A common, genetically influenced lipoprotein subclass profile characterized by a predominance of small, dense law density lipoprotein (LDL) particles is associated with relative in creases in plasma triglyceride and apolipoprotein (ape) B-100, and reduced levels of high density lipoprotein cholesterol and apoAl, Recently, this phenotype has also been associated with the insulin resistance syndrome and familial combined hyperlipidemia. Case-control studies of patients with myocardial infarction and angiographically documented coronary artery disease (CAD) have demonstrated that 40-50% af patients have the small, dense LDL phenotype and that this is associated with a 2- to 3-fold increase In disease risk, However, because of strong statistical correlations among the multiple features of the phenotype, it has been difficult to determine whether greater than or equal to 1 of its metabolic: alterations are primarily responsible for increased CAD susceptibility, More direct evidence for enhanced atherogenicity of lipoproteins in this trait derives from a recent report that LDL cholesterol lowering by diet and drug treatment resulted in reduced coronary angiographic progression in CAD subjects with predominantly dense LDL, but that an equivalent lowering of LDL cholesterol in subjects with more buoyant LDL was not associated with angiographic benefit, Further, in vitro findings have indicated increased susceptibility of small, dense LDL to oxidative modification and relatively greater binding of these particles to arterial wall proteoglycans. Thus, the small, dense LDL trait may underlie familial predisposition to CAD in a large proportion of the population, and its presence may indicate the potential for benefit from specific therapeutic interventions. RP KRAUSS, RM (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DONNER LAB,465 1 CYCLOTRON RD,BERKELEY,CA 94720, USA. FU NHLBI NIH HHS [HL 18574] NR 35 TC 72 Z9 78 U1 0 U2 5 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9149 J9 AM J CARDIOL JI Am. J. Cardiol. PD FEB 23 PY 1995 VL 75 IS 6 BP B53 EP B57 DI 10.1016/0002-9149(95)80012-H PG 5 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA QH854 UT WOS:A1995QH85400012 PM 7863975 ER PT J AU ROBERTS, WC STEINBERG, D FALK, E ALEXANDER, RW FOGELMAN, AM BREWER, HB GANZ, P GIMBRONE, MA MILLER, GJ HARRISON, DG KRAUSS, RM GRUNDY, SM WEITZ, JI HARKER, LA AF ROBERTS, WC STEINBERG, D FALK, E ALEXANDER, RW FOGELMAN, AM BREWER, HB GANZ, P GIMBRONE, MA MILLER, GJ HARRISON, DG KRAUSS, RM GRUNDY, SM WEITZ, JI HARKER, LA TI ROUND-TABLE DISCUSSION SO AMERICAN JOURNAL OF CARDIOLOGY LA English DT Discussion C1 EMORY UNIV,SCH MED,DIV CARDIOL,ATLANTA,GA 30322. ODENSE UNIV,INST FORENS MED,DK-5000 ODENSE C,DENMARK. UNIV CALIF LOS ANGELES,SCH MED,DEPT MED,DIV CARDIOL,LOS ANGELES,CA 90024. NHLBI,MOLEC DIS BRANCH,BETHESDA,MD 20892. HARVARD UNIV,BRIGHAM & WOMENS HOSP,SCH MED,DIV VASC RES,BOSTON,MA 02215. ST BARTHOLOMEWS HOSP,WOLFSON INST PREVENTAT MED,MRC,EPIDEMIOL & MED CARE UNIT,LONDON EC1M 6BQ,ENGLAND. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DONNER LAB,BERKELEY,CA 94720. HAMILTON CIV HOSP,RES CTR,EXPTL THROMBOSIS & ATHEROSCLEROSIS RES GRP,HAMILTON,ON L8V 1C3,CANADA. UNIV TEXAS,SW MED CTR,DEPT CLIN NUTR,DALLAS,TX 75235. EMORY UNIV,DIV HEMATOL & ONCOL,ATLANTA,GA 30322. HARVARD UNIV,BRIGHAM & WOMENS HOSP,SCH MED,DIV CARDIOVASC,BOSTON,MA 02115. RP ROBERTS, WC (reprint author), BAYLOR UNIV,MED CTR,BAYLOR CARDIOVASC INST,DALLAS,TX, USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9149 J9 AM J CARDIOL JI Am. J. Cardiol. PD FEB 23 PY 1995 VL 75 IS 6 BP B93 EP B97 PG 5 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA QH854 UT WOS:A1995QH85400021 ER PT J AU XUE, QF YEUNG, ES AF XUE, QF YEUNG, ES TI DIFFERENCES IN THE CHEMICAL-REACTIVITY OF INDIVIDUAL MOLECULES OF AN ENZYME SO NATURE LA English DT Article ID CONFORMATIONAL CHANGES; DENATURED PROTEINS; KINETIC ASPECTS AB MUCH attention has been focused recently on the detection and physical characterization of individual molecules(1-11). Using such methods to study the chemical properties, such as reactivity, of single molecules offers the potential to investigate how these might vary from molecule to molecule, and for individual molecules as a function of time, The complex structures of biomolecules such as enzymes make them particularly attractive targets for studying how subtle changes or differences at the molecular level might influence chemical reactivity. We have shown previously(12,13) that very small (zeptomole) amounts of enzymes can be studied using a fluorescence microassay; single enzyme molecules have also been detected in oil-dispersed droplets by fluorescence microscopy(14,15). Here we report the observation of reactions of individual molecules of lactate dehydrogenase (LDH-1), which produces NADH from lactate and nicotinamide adenine dinucleotide (NAD(+)), When they are present at very low concentrations in a narrow capillary, each enzyme molecule produces a discrete zone of NADH; these can be manipulated electrophoretically and monitored by fluorescence spectroscopy, We find that the activity of individual electrophoretically pure enzyme molecules can vary by up to a factor of four, and that these activities remain unchanged over a two-hour period. We suggest that the origin of the activity differences may lie in the presence of several stable forms of the enzyme. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 23 TC 267 Z9 277 U1 2 U2 40 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD FEB 23 PY 1995 VL 373 IS 6516 BP 681 EP 683 DI 10.1038/373681a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QH928 UT WOS:A1995QH92800048 PM 7854448 ER PT J AU ORMAND, WE PIZZOCHERO, PM BORTIGNON, PF BROGLIA, RA AF ORMAND, WE PIZZOCHERO, PM BORTIGNON, PF BROGLIA, RA TI NEUTRINO CAPTURE CROSS-SECTIONS FOR AR-40 AND BETA-DECAY OF TI-40 SO PHYSICS LETTERS B LA English DT Article DE NUCLEAR STRUCTURE; SOLAR NEUTRINO SPECTROSCOPY ID SHELL NUCLEI; DETECTOR; GALLEX AB Shell-model calculations of solar neutrino absorption cross sections for Ar-40, the proposed component of the ICARUS detector, are presented. It is found that low-lying Gamow-Teller transitions lead to a significant enhancement of the absorption rate over that expected from the Fermi transition between the isobaric analog states, leading to an overall absorption cross section for B-8 neutrinos of (11.5 +/- 0.7) x 10(-43) Cm-2 or a total expected rate of 6.7 + 2.5 SNU. We also note that the pertinent Gamow-Teller transitions in Ar-40, experimentally accessible from the P-decay of the mirror nucleus Ti-40. Predictions for the branching ratios to states in (SC)-S-40 are presented, and the theoretical halflife of 55 +/- 5 ms is found to be in good agreement with the experimental value of 56(-12)(+18) ms. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. CALTECH,DEPT PHYS 16133,PASADENA,CA 91125. CALTECH,WK KELLOGG RADIAT LAB,PASADENA,CA 91125. UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY. IST NAZL FIS NUCL,SEZ MILANO,I-20133 MILAN,ITALY. UNIV COPENHAGEN,NIELS BOHR INST,DK-2100 COPENHAGEN,DENMARK. RP ORMAND, WE (reprint author), UNIV TENNESSEE,DEPT PHYS,401 NIELSON HALL,KNOXVILLE,TN 37996, USA. NR 35 TC 38 Z9 38 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 FEB 23 PY 1995 VL 345 IS 4 BP 343 EP 350 DI 10.1016/0370-2693(94)01605-C PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100001 ER PT J AU LIOU, MK TIMMERMANS, R GIBSON, BF AF LIOU, MK TIMMERMANS, R GIBSON, BF TI NOVEL SOFT-PHOTON ANALYSIS OF PP-GAMMA BELOW PION-PRODUCTION THRESHOLD SO PHYSICS LETTERS B LA English DT Article ID PROTON-PROTON BREMSSTRAHLUNG; SCATTERING DATA; TIME DELAYS; MODEL AB A novel soft-photon amplitude is proposed to replace the conventional Low soft-photon amplitude for nucleon-nucleon bremsstrahlung. Its derivation is guided by the standard meson-exchange model of the nucleon-nucleon interaction. The new amplitude provides a superior description of pp gamma cross section data for kinematic conditions where the Low amplitude disagrees with potential-model calculations. C1 CUNY BROOKLYN COLL,INST NUCL THEORY,BROOKLYN,NY 11210. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP LIOU, MK (reprint author), CUNY BROOKLYN COLL,DEPT PHYS,BROOKLYN,NY 11210, USA. NR 23 TC 36 Z9 36 U1 0 U2 0 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 FEB 23 PY 1995 VL 345 IS 4 BP 372 EP 378 DI 10.1016/0370-2693(94)01662-V PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100006 ER PT J AU KORICHI, A HANNACHI, F DELONCLE, I KORTEN, W AHMAD, I AZAIEZ, F BASTIN, G BEAUSANG, CW BOURGEOIS, C CARPENTER, MP CLARK, RM DUFFAIT, R DUPRAT, J GALL, BJP HENRY, RG HUBEL, H JANSSENS, RVF JOYCE, MJ KACI, M KHOO, TL LAURITSEN, T LECOZ, Y MEYER, M PAUL, ES PERRIN, N POFFE, N PORQUET, MG REDON, N SCHUCK, C SERGOLLE, H SHARPEYSCHAFER, JF SIMPSON, J SMITH, AG WADSWORTH, R WILLSAU, P AF KORICHI, A HANNACHI, F DELONCLE, I KORTEN, W AHMAD, I AZAIEZ, F BASTIN, G BEAUSANG, CW BOURGEOIS, C CARPENTER, MP CLARK, RM DUFFAIT, R DUPRAT, J GALL, BJP HENRY, RG HUBEL, H JANSSENS, RVF JOYCE, MJ KACI, M KHOO, TL LAURITSEN, T LECOZ, Y MEYER, M PAUL, ES PERRIN, N POFFE, N PORQUET, MG REDON, N SCHUCK, C SERGOLLE, H SHARPEYSCHAFER, JF SIMPSON, J SMITH, AG WADSWORTH, R WILLSAU, P TI OBSERVATION AND LIFETIME OF THE FIRST EXCITED SUPERDEFORMED BAND IN HG-192 SO PHYSICS LETTERS B LA English DT Article ID OCTUPOLE CORRELATIONS; NUCLEI; SPIN; EUROGAM; STATES; ARRAY AB An excited superdeformed (SD) band has been observed in Hg-192 With the EUROGAM spectrometer. It is interpreted as a two quasi-neutron excitation in the Hg-192 SD nucleus. Nuclear level lifetimes have been measured using the Doppler-shift attenuation method. An average transition quadrupole moment of 19.5 +/- 1.5 b has been obtained which is similar to the value measured in the yrast SD band. These results indicate that the deformation in the Hg-192 SD nucleus is stable despite changes in the occupancy of high-N orbitals. C1 CTR SPECTROMETRIE NUCL & SPECTROMETRIE MASSE,CNRS,IN2P3,F-91405 ORSAY,FRANCE. UNIV BONN,INST STRAHLEN & KERNPHYS,D-53115 BONN,GERMANY. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV LIVERPOOL,OLIVER LODGE LAB,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. UNIV YORK,DEPT PHYS,YORK YO1 5DD,N YORKSHIRE,ENGLAND. UNIV LYON 1,INST PHYS NUCL,F-69622 VILLEURBANNE,FRANCE. UNIV OXFORD,DEPT PHYS,OXFORD,ENGLAND. SERC,DARESBURY LAB,DRAL,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND. UNIV MANCHESTER,SCHUSTER LAB,MANCHESTER M13 9PL,LANCS,ENGLAND. RP KORICHI, A (reprint author), INST PHYS NUCL,CNRS,IN2P3,BAT 104,F-91406 ORSAY,FRANCE. RI KORTEN, Wolfram/H-3043-2013; Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 30 TC 16 Z9 16 U1 0 U2 0 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 FEB 23 PY 1995 VL 345 IS 4 BP 403 EP 407 DI 10.1016/0370-2693(94)01608-F PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100011 ER PT J AU BARABASH, AS AVIGNONE, FT COLLAR, JI GUERARD, CK ARTHUR, RJ BRODZINSKI, RL MILEY, HS REEVES, JH MEIER, JR RUDDICK, K UMATOV, VI AF BARABASH, AS AVIGNONE, FT COLLAR, JI GUERARD, CK ARTHUR, RJ BRODZINSKI, RL MILEY, HS REEVES, JH MEIER, JR RUDDICK, K UMATOV, VI TI 2 NEUTRINO DOUBLE-BETA DECAY OF MO-100 TO THE FIRST EXCITED O+ STATE IN RU-100 SO PHYSICS LETTERS B LA English DT Article ID GE-76; SEARCH; CD-116; SE-82 AB Double-beta decay of Mo-100 to the 0(+) excited state at 1130.29 keV in Ru-100 has been observed. A 956 g sample of molybdenum powder enriched to 98.468% Mo-100 was counted in a ''Marinelli'' geometry with a well-shielded, ultralow-background germanium detector. The cascade gamma rays at 539.53 and 590.76 keV in Ru-100 were observed. The resulting half-life is(6.1(-1.1)(+1.8)) X 10(20) yr at the 68% confidence limit in disagreement with a recently published limit. C1 UNIV S CAROLINA, DEPT PHYS & ASTRON, COLUMBIA, SC 29208 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. UNIV MINNESOTA, SCH PHYS & ASTRON, MINNEAPOLIS, MN 55455 USA. PN LEBEDEV PHYS INST, MOSCOW 142092, RUSSIA. RP MOSCOW THEORET & EXPTL PHYS INST, MOSCOW 117259, RUSSIA. RI Barabash, Alexander/S-8851-2016 NR 32 TC 90 Z9 90 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 FEB 23 PY 1995 VL 345 IS 4 BP 408 EP 413 DI 10.1016/0370-2693(94)01657-X PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100012 ER PT J AU HILL, CT AF HILL, CT TI TOPCOLOR ASSISTED TECHNICOLOR SO PHYSICS LETTERS B LA English DT Article ID PSEUDO-GOLDSTONE BOSONS; STANDARD MODEL; SYMMETRY-BREAKING; DYNAMICS; CONDENSATION; HIERARCHIES; DECAY; MASS AB A condensate, ($) over bar tt, arising from O(TeV) scale ''topcolor'', in addition to technicolor (and ETC) may naturally explain the gauge hierarchy, the large top quark mass, and contains a rich system of testable consequences. A triplet of strongly coupled pseudo-Nambu-Goldstone bosons, ''top-pions'', near the top mass scale is a generic prediction of the models. A new class of technicolor schemes and associated phenomenology is suggested in this approach. RP HILL, CT (reprint author), FERMILAB NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 33 TC 568 Z9 583 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 FEB 23 PY 1995 VL 345 IS 4 BP 483 EP 489 DI 10.1016/0370-2693(94)01660-5 PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100025 ER PT J AU ADAMS, DL AKCHURIN, N BELIKOV, NI BRAVAR, A BYSTRICKY, J CORCORAN, MD COSSAIRT, JD CRANSHAW, J DEREVSCHIKOV, AA ENYO, H FUNAHASHI, H GOTO, Y GRACHOV, OA GROSNICK, DP HILL, DA IIJIMA, T IMAI, K ITOW, Y IWATANI, K KRUEGER, KW KURODA, K LEHAR, F DELESQUEN, A LOPIANO, D LUEHRING, FC MAKI, T MAKINO, S MASAIKE, A MATULENKO, YA MESCHANIN, AP MICHALOWICZ, A MILLER, DH MIYAKE, K NAGAMINE, T NESSITEDALDI, F NESSI, M NGUYEN, C NURUSHEV, SB OHASHI, Y ONEL, Y PATALAKHA, DI PAULETTA, G PENZO, A READ, AL ROBERTS, JB VANROSSUM, L RYKOV, VL SAITO, N SALVATO, G SCHIAVON, P SHIMA, T SKEENS, J SOLOVYANOV, VL SPINKA, H TAKASHIMA, R TAKEUTCHI, F TAMURA, N TANAKA, N UNDERWOOD, DG VASILIEV, AN VILLARI, A WHITE, JL YAMASHITA, S YOKOSAWA, A YOSHIDA, T ZANETTI, A AF ADAMS, DL AKCHURIN, N BELIKOV, NI BRAVAR, A BYSTRICKY, J CORCORAN, MD COSSAIRT, JD CRANSHAW, J DEREVSCHIKOV, AA ENYO, H FUNAHASHI, H GOTO, Y GRACHOV, OA GROSNICK, DP HILL, DA IIJIMA, T IMAI, K ITOW, Y IWATANI, K KRUEGER, KW KURODA, K LEHAR, F DELESQUEN, A LOPIANO, D LUEHRING, FC MAKI, T MAKINO, S MASAIKE, A MATULENKO, YA MESCHANIN, AP MICHALOWICZ, A MILLER, DH MIYAKE, K NAGAMINE, T NESSITEDALDI, F NESSI, M NGUYEN, C NURUSHEV, SB OHASHI, Y ONEL, Y PATALAKHA, DI PAULETTA, G PENZO, A READ, AL ROBERTS, JB VANROSSUM, L RYKOV, VL SAITO, N SALVATO, G SCHIAVON, P SHIMA, T SKEENS, J SOLOVYANOV, VL SPINKA, H TAKASHIMA, R TAKEUTCHI, F TAMURA, N TANAKA, N UNDERWOOD, DG VASILIEV, AN VILLARI, A WHITE, JL YAMASHITA, S YOKOSAWA, A YOSHIDA, T ZANETTI, A TI MEASUREMENT OF SINGLE SPIN ASYMMETRY FOR DIRECT PHOTON PRODUCTION IN PP COLLISIONS AT 200-GEV/C SO PHYSICS LETTERS B LA English DT Article ID POLARIZED-PROTON-BEAM; ANALYZING POWER; PI-0 PRODUCTION; ANTIPROTONS; SCATTERING; PI(0) AB The single spin asymmetry for inclusive direct-photon production has been measured using a polarized proton beam of 200 GeV/c with an unpolarized proton target at -0.15 < x(F) < 0.15 and 2.5 < p(T) < 3.1 GeV/(c) at Fermilab. The data on the cross section for pp --> gamma X at 2.5 < p(T) < 3.8 GeV/c are also provided. The measurement was done using lead-glass calorimeters and photon detectors which surrounded the fiducial area of the calorimeters. Background rejection has been done using these surrounding photon detectors. The cross section obtained is consistent with the results of previous measurements assuming a nuclear dependence of A(1.0). The single spin asymmetry, A(N), for the direct-photon production is consistent with zero within experimental uncertainty. C1 RICE UNIV, TW BONNER NUCL LAB, HOUSTON, TX 77251 USA. UNIV IOWA, DEPT PHYS, IOWA CITY, IA 52242 USA. INST HIGH ENERGY PHYS, PROTVINO 142284, RUSSIA. UNIV TRIESTE, DIPARTIMENTO FIS, I-34100 TRIESTE, ITALY. CENS, F-91191 GIF SUR YVETTE, FRANCE. FERMILAB NATL ACCELERATOR LAB, BATAVIA, IL 60510 USA. KYOTO UNIV, DEPT PHYS, KYOTO 60601, JAPAN. ARGONNE NATL LAB, ARGONNE, IL 60439 USA. HIROSHIMA UNIV, HIGASHIHIROSHIMA 724, JAPAN. NE STATE UNIV, TULSA, OK 74464 USA. LAB ANNECY LE VIEUX PHYS PARTICULES, F-74017 ANNECY LE VIEUX, FRANCE. NORTHWESTERN UNIV, DEPT PHYS, EVANSTON, IL 60201 USA. UNIV OCCUPAT & ENVIRONM HLTH, KITAKYUSHU, FUKUOKA 807, JAPAN. UNIV UDINE, I-33100 UDINE, ITALY. UNIV MESSINA, DIPARTIMENTO FIS, I-98100 MESSINA, ITALY. KYOTO UNIV, KYOTO 612, JAPAN. KYOTO SANGYO UNIV, KYOTO 603, JAPAN. OKAYAMA UNIV, OKAYAMA 700, JAPAN. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. OSAKA CITY UNIV, OSAKA 558, JAPAN. NR 26 TC 50 Z9 50 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 FEB 23 PY 1995 VL 345 IS 4 BP 569 EP 575 DI 10.1016/0370-2693(94)01695-9 PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100040 ER PT J AU DERRICK, M KRAKAUER, D MAGILL, S MUSGRAVE, B REPOND, J SCHLERETH, J STANEK, R TALAGA, RL THRON, J ARZARELLO, F AYAD, R BARI, G BASILE, M BELLAGAMBA, L BOSCHERINI, D BRUNI, A BRUNI, G BRUNI, P ROMEO, GC CASTELLINI, G CHIARINI, M CIFARELLI, L CINDOLO, F CIRALLI, F CONTIN, A DAURIA, S FRASCONI, F GIALAS, I GIUSTI, P IACOBUCCI, G LAURENTI, G LEVI, G MARGOTTI, A MASSAM, T NANIA, R NEMOZ, C PALMONARI, F POLINI, A SARTORELLI, G TIMELLINI, R GARCIA, YZ ZICHICHI, A BARGENDE, A CRITTENDEN, J DESCH, K DIEKMANN, B DOEKER, T ECKERT, M FELD, L FREY, A GEERTS, M GEITZ, G GROTHE, M HARTMANN, H HAUN, D HEINLOTH, K HILGER, E JAKOB, HP KATZ, UF MARI, SM MASS, A MENGEL, S MOLLEN, J PAUL, E REMBSER, C SCHATTEVOY, R SCHRAMM, D STAMM, J WEDEMEYER, R CAMPBELLROBSON, S CASSIDY, A DYCE, N FOSTER, B GEORGE, S GILMORE, R HEATH, GP HEATH, HF LLEWELLYN, TJ MORGADO, CJS NORMAN, DJP OMARA, JA TAPPER, RJ WILSON, SS YOSHIDA, R RAU, RR AMEODO, M IANNOTTI, L SCHIOPPA, M SUSINNO, G BERNSTEIN, A CALDWELL, A PARSONS, JA RITZ, S SCIULLI, F STRAUB, PB WAI, L YANG, S BORZEMSKI, P CHWASTOWSKI, J ESKREYS, A PIOTRZKOWSKI, K ZACHARA, M ZAWIEJSKI, L ADAMCZYK, L BEDNAREK, B ESKREYS, K JELEN, K KISIELEWSKA, D KOWALSKI, T RULIKOWSKAZAREBSKA, E SUSZYCKI, L ZAJAC, J KEDZIERSKI, T KOTANSKI, A PRZYBYCIEN, M BAUERDICK, LAT BEHRENS, U BIENLEIN, JK BOTTCHER, S COLDEWEY, C DREWS, G FLASINSKI, M GILKINSON, DJ GOTTLICHER, P GUTJAHR, B HAAS, T HAIN, W HASELL, D HESSLING, H HULTSCHIG, H IGA, Y JOOS, P KASEMANN, M KLANNER, R KOCH, W KOPKE, L KOTZ, U KOWALSKI, H KROGER, W KRUGERS, J LABS, J LADAGE, A LOHR, B LOWE, M LUKE, D MANCZAK, O NG, JST NICKEL, S NOTZ, D OHRENBERG, K ROCO, M ROHDE, M ROLDAN, J SCHNEEKLOTH, U SCHULZ, W SELONKE, F STILIARIS, E VOSS, T WESTPHAL, D WOLF, G YOUNGMAN, C GRABOSCH, HJ LEICH, A MEYER, A RETHFELDT, C SCHLENSTEDT, S BARBAGLI, G PELFER, P ANZIVINO, G MACCARRONE, G DEPASQUALE, S QIAN, S VOTANO, L BAMBERGER, A FREIDHOF, A POSER, T SOLDNERREMBOLD, S SCHROEDER, J THEISEN, G TREFZGER, T BROOK, NH BUSSEY, PJ DOYLE, AT FLECK, I JAMIESON, VA SAXON, DH UTLEY, ML WILSON, AS DANNEMANN, A HOLM, U HORSTMANN, D KAMMERLOCHER, H KREBS, B NEUMANN, T SINKUS, R WICK, K BADURA, E BUROW, BD FURTJES, A HAGGE, L LOHRMANN, E MAINUSCH, J MILEWSKI, J NAKAHATA, M PAVEL, N POELZ, G SCHOTT, W TERRON, J ZETSCHE, F BACON, TC BEUSELINCK, R BUTTERWORTH, I GALLO, E HARRIS, VL HUNG, BH LONG, KR MILLER, DB MORAWITZ, PPO PRINIAS, A SEDGBEER, JK WHITFIELD, AF MALLIK, U MCCLIMENT, E WANG, MZ WANG, SM WU, JT ZHANG, Y CLOTH, P FILGES, D AN, SH HONG, SM NAM, SW PARK, SK SUH, MH YON, SH IMLAY, R KARTIK, S KIM, HJ MCNEIL, RR METCALF, W NADENDLA, VK BARREIRO, F CASES, G GRACIANI, R HERNANDEZ, JM HERVAS, L LABARGA, L DELPESO, J PUGA, J DETROCONIZ, JF IKRAIAM, F MAYER, JK SMITH, GR 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BUROW, BD FURTJES, A HAGGE, L LOHRMANN, E MAINUSCH, J MILEWSKI, J NAKAHATA, M PAVEL, N POELZ, G SCHOTT, W TERRON, J ZETSCHE, F BACON, TC BEUSELINCK, R BUTTERWORTH, I GALLO, E HARRIS, VL HUNG, BH LONG, KR MILLER, DB MORAWITZ, PPO PRINIAS, A SEDGBEER, JK WHITFIELD, AF MALLIK, U MCCLIMENT, E WANG, MZ WANG, SM WU, JT ZHANG, Y CLOTH, P FILGES, D AN, SH HONG, SM NAM, SW PARK, SK SUH, MH YON, SH IMLAY, R KARTIK, S KIM, HJ MCNEIL, RR METCALF, W NADENDLA, VK BARREIRO, F CASES, G GRACIANI, R HERNANDEZ, JM HERVAS, L LABARGA, L DELPESO, J PUGA, J DETROCONIZ, JF IKRAIAM, F MAYER, JK SMITH, GR CORRIVEAU, F HANNA, DS HARTMANN, J HUNG, LW LIM, JN MATTHEWS, CG PATEL, PM SINCLAIR, LE STAIRS, DG LAURENT, MS ULLMANN, R ZACEK, G BASHKIROV, V DOLGOSHEIN, BA STIFUTKIN, A ACOSTA, D BYLSMA, B DURKIN, LS HONSCHEID, K LI, C LING, TY MCLEAN, KW MURRAY, WN PARK, IH ROMANOWSKI, TA SEIDLEIN, R BAILEY, DS BLAIR, GA BYRNE, A CASHMERE, RJ COOPERSARKAR, AM DANIELS, D DEVENISH, RCE HARNEW, N LANCASTER, M LUFFMAN, PE LINDEMANN, L MCFALL, J NATH, C QUADT, A UIJTERWAAL, H WALCZAK, R WILSON, FF YIP, T BULMAHN, J BUTTERWORTH, JM FEILD, RG OH, BY WHITEMORE, JJ DAGOSTINI, G IORI, M MARINI, G MATTIOLI, M NIGRO, A TASSI, E HART, JC MCCUBBIN, NA PRYTZ, K SHAH, TP SHORT, TL BARBERIS, E CARTIGLIA, N DUBBS, T HEUSCH, C VANHOOK, M HUBBARD, B LOCKMAN, W RAHN, JT SADROZINSKI, HEW SEIDEN, A BILTZINGER, J SEIFERT, RJ WALENTA, AH ZECH, G ABRAMOWICZ, H BRISKIN, G DAGAN, S LEVY, A HASEGAWA, T HAZUMI, M ISHII, T KUZE, M MINE, S NAGASAWA, Y NAGIRA, T NAKAO, M SUZUKI, I TOKUSHUKU, K YAMADA, S YAMAZAKI, Y CHIBA, M HAMATSU, R HIROSE, T HOMMA, K KITAMURA, S NAGAYAMA, S NAKAMITSU, Y CIRIO, R COSTA, M FERRERO, MI LAMBERTI, L MASELLI, S PERONI, C SACCHI, R SOLANO, A STAIANO, A DARDO, M BAILEY, DC BANDYOPADHYAY, D BENARD, F BRKIC, M CROMBIE, MB GINGRICH, DM HARTNER, GF JOE, KK LEVMAN, GM MARTIN, JF ORR, RS SAMPSON, CR TEUSCHER, RJ CATTERALL, CD JONES, TW KAZIEWICZ, PB LANE, JB SAUNDERS, RL SHULMAN, J BLANKENSHIP, K KOCHOCKI, J LU, B MO, LW BOGUSZ, W CHARCHULA, K CIBOROWSKI, J GAJEWSKI, J GRZELAK, G KASPRZAK, M KRZYZANOWSKI, M MUCHOROWSKI, K NOWAK, RJ PAWLAK, JM TYMIENIECKA, T WROBLEWSKI, AK ZAKRZEWSKI, JA ZARNECKI, AF ADAMUS, M EISENBERG, Y GLASMAN, C KARSHON, U REVEL, D SHAPIRA, A ALI, I BEHRENS, B DASU, S FORDHAM, C FOUDAS, C GOUSSIOU, A LOVELESS, RJ REEDER, DD SILVERSTEIN, S SMITH, WH TSURUGAI, T BHADRA, S FRISKEN, WR FURUTANI, KM TI EXTRACTION OF THE GLUON DENSITY OF THE PROTON AT X SO PHYSICS LETTERS B LA English DT Article ID INELASTIC MUON SCATTERING; DEUTERON STRUCTURE FUNCTIONS; NUCLEON STRUCTURE FUNCTIONS; HIGH STATISTICS MEASUREMENT; PARTON DISTRIBUTIONS; LEADING ORDER; HIGH Q2; PERTURBATION-THEORY; SCALING VIOLATIONS; PP COLLISIONS AB The gluon momentum density xg(x, Q(2)) of the proton was extracted at Q(2) = 20 GeV2 for small values of x between 4 x 10(-4) and 10(-2) from the scaling violations of the proton structure function F-2 measured recently by ZEUS in deep inelastic neutral current ep scattering at HERA. The extraction was performed in two ways. Firstly, using a global NLO fit to the ZEUS data on F-2 at low x constrained by measurements from NMC at larger x; and secondly using published approximate methods for the solution of the GLAP QCD evolution equations. Consistent results are obtained. A substantial increase of the gluon density is found at small x in comparison with the NMC result obtained at larger values of x. C1 UNIV BOLOGNA, BOLOGNA, ITALY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. UNIV BONN, INST PHYS, W-5300 BONN, GERMANY. UNIV BRISTOL, HH WILLS PHYS LAB, BRISTOL BS8 1TL, AVON, ENGLAND. BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. UNIV CALABRIA, DEPT PHYS, I-87036 COSENZA, ITALY. IST NAZL FIS NUCL, COSENZA, ITALY. COLUMBIA UNIV, NEVIS LABS, IRVINGTON, NY USA. INST NUCL PHYS, KRAKOW, POLAND. ACAD MIN & MET, FAC PHYS & NUCL TECHNIQUES, KRAKOW, POLAND. JAGIELLONIAN UNIV, DEPT PHYS, KRAKOW, POLAND. DESY, W-2000 HAMBURG, GERMANY. 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NIKHEF H, 1009 DB 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. UNIV ROMA LA SAPIENZA, DIPARTIMENTO FIS, I-00185 ROME, ITALY. IST NAZL FIS NUCL, ROME, ITALY. RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND. UNIV CALIF SANTA CRUZ, SANTA CRUZ, CA 95064 USA. UNIV GESAMTHSCH SIEGEN, FACHBEREICH PHYS, W-5900 SIEGEN, GERMANY. TEL AVIV UNIV, SCH PHYS, IL-69978 TEL AVIV, ISRAEL. UNIV TOKYO, INST NUCL STUDY, TOKYO, JAPAN. TOKYO METROPOLITAN UNIV, DEPT PHYS, TOKYO, JAPAN. UNIV TURIN, DIPARTIMENTO FIS SPERIMENTALE, TURIN, ITALY. IST NAZL FIS NUCL, I-10125 TURIN, ITALY. UNIV TURIN, FAC SCI 2, ALESSANDRIA, ITALY. IST NAZL FIS NUCL, ALESSANDRIA, ITALY. UNIV TORONTO, DEPT PHYS, TORONTO, ON, CANADA. UCL, DEPT PHYS & ASTRON, LONDON, ENGLAND. VIRGINIA POLYTECH INST & STATE UNIV, DEPT PHYS, BLACKSBURG, VA 24061 USA. UNIV WARSAW, INST EXPTL PHYS, WARSAW, POLAND. INST NUCL STUDIES, PL-00681 WARSAW, POLAND. WEIZMANN INST SCI, DEPT NUCL PHYS, IL-76100 REHOVOT, ISRAEL. UNIV WISCONSIN, DEPT PHYS, MADISON, WI 53706 USA. MEIJI GAKUIN UNIV, FAC GEN EDUC, YOKOHAMA, KANAGAWA, JAPAN. YORK UNIV, DEPT PHYS, N YORK, ON M3J 1P3, CANADA. IROE, FLORENCE, ITALY. RP DERRICK, M (reprint author), ARGONNE NATL LAB, 9700 S CASS AVE, ARGONNE, IL 60439 USA. 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SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TROWITZSCH, G TSAREGORODTSEV, A TSIPOLITIS, T TULLY, C ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, SX WYNHOFF, S XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHU, RY ZICHICHI, A VANDERZWAAN, BCC TI B-ASTERISK PRODUCTION IN Z-DECAYS AT LEP SO PHYSICS LETTERS B LA English DT Article ID LUND MONTE-CARLO; JET FRAGMENTATION; E+E-PHYSICS; CONSTRUCTION; DETECTOR; HADRON AB The production of B* mesons in Z decays has been measured at LEP with the L3 detector. A sample of Z --> b ($) over bar b events was obtained by tagging muons in 1.6 million hadronic Z decays collected in 1991, 1992 and 1993. A signal with a peak value of E(y) = 46.3+/-1.9 (stat) MeV in the B rest frame energy spectrum was interpreted to come from the decay B* --> gamma B. The inclusive production ratio of B* mesons relative to B mesons was determined from a fit to the spectrum to be N-B*/(N-B* + N-B) = 0.76+/-0.08+/-0.06, where the first error is statistical and the second is systematic. C1 RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY. NIKHEF H, 1009 DB AMSTERDAM, NETHERLANDS. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. LAB ANNECY LE VIEUX PHYS PARTICULES, CNRS, IN2P3, F-74941 ANNECY LE VIEUX, FRANCE. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA. HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA. NORTHEASTERN UNIV, BOSTON, MA 02215 USA. INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA. UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. MIT, CAMBRIDGE, MA 02139 USA. IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. WORLD LAB, FBLIA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA. RES INST HIGH ENERGY PHYS, SEFT, SF-00014 HELSINKI, FINLAND. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST NUCL PHYS, CNRS, IN2P3, F-69622 VILLEURBANNE, FRANCE. CIEMAT, E-28040 MADRID, SPAIN. INST THEORET & EXPTL PHYS, MOSCOW 117259, RUSSIA. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. UNIV NAPLES, I-80125 NAPLES, ITALY. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. CALTECH, PASADENA, CA 91125 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. ST PETERSBURG NUCL PHYS INST, ST PETERSBURG, RUSSIA. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92093 USA. UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN. BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA. KOREA ADV INST SCI & TECHNOL, CTR HIGH ENERGY PHYS, TAEJON 305701, SOUTH KOREA. UNIV ALABAMA, TUSCALOOSA, AL 35486 USA. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. DESY, INST HOCHENERGIEPHYS, D-15738 ZUETHEN, GERMANY. ETH ZURICH, CH-8093 ZURICH, SWITZERLAND. UNIV HAMBURG, D-22761 HAMBURG, GERMANY. BOSTON UNIV, BOSTON, MA 02215 USA. IST NAZL FIS NUCL, I-10085 ROME, ITALY. RP ACCIARRI, M (reprint author), IST NAZL FIS NUCL, VIA CELORIA 16, I-20133 MILAN, ITALY. RI van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Duran, Ignacio/H-7254-2015; rodriguez calonge, francisco javier/H-9682-2015; Sanchez, Eusebio/H-5228-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Roth, Stefan/J-2757-2016; de la Cruz, Begona/K-7552-2014; Josa, Isabel/K-5184-2014; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Ferguson, Thomas/O-3444-2014; Fiandrini, Emanuele/C-4549-2008; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Servoli, Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014 OI van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283; Roth, Stefan/0000-0003-3616-2223; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ferguson, Thomas/0000-0001-5822-3731; Ludovici, Lucio/0000-0003-1970-9960; Servoli, Leonello/0000-0003-1725-9185; Cerrada, Marcos/0000-0003-0112-1691 NR 18 TC 35 Z9 35 U1 1 U2 6 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. 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B PD FEB 23 PY 1995 VL 345 IS 4 BP 589 EP 597 DI 10.1016/0370-2693(95)01611-S PG 9 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100042 ER PT J AU ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALMEIDA, FML ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLUME, M BLYTH, S BOCCI, V BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BUYS, A CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L CASO, C CASSIO, V GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOCHULA, P CHOROWICZ, V CHRIN, JTM CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W DEFOIX, C DELLARICCA, G DELPIERRE, P DEMARIA, N DEANGELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERCQ, C LASO, MDMF DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DRESS, J DREES, KA DRIS, M DUFOUR, Y DUPONT, F EDSALL, D EHRET, R EKELOF, T EKSPONG, G ELSING, M ENGEL, JP ERSHAIDAT, N SANTO, ME FASSOULIOTIS, D FEINDT, M FENYUK, A FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FOUSSET, JL FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D GERBER, JP GILLESPIE, D GOKIELI, R GOLOB, B CADENAS, JJGY GOPAL, G GORN, L GORSKI, M GRACCO, V GRARD, F GRAZIANI, E GROSDIDIER, G GUNNARSSON, P GUY, J HAEDINGER, U HAHN, E HAHN, M HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERNANDO, JA HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D HONORE, PF HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P JACKSON, JN JACOBSSON, R JALOCHA, P JANIK, R JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONSSON, L JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KRAMMER, M KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUMSTEIN, Z KRUPINSKI, W KUBINEC, P KUCEWICZ, W KULKA, K KURVINEN, K LACASTA, C LAKTINEH, I LAMBROPOULOS, C LAMSA, JW LANCERI, L LANE, DW LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MAIO, A MALTEZOS, A MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C MARTINEZVIDAL, F MARTI, SIG MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIKULEC, I MIRABITO, L MITAROFF, WA MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIKOLAENKO, V NISS, P NOMEROTSKI, A NORMAND, A OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAGES, P PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PEREVOZCHIKOV, V PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIKOV, V PREST, M PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONJIN, V ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEDYKH, Y SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, L STAVROPOULOS, G STEPANIAK, K STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T TCHIKILEV, O THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRERM, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VANELDIK, J VEGNI, G VENTURA, L VENUS, W VERBEURRE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKE, D WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YU, L YUSHCHENKO, O ZACH, F ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZAVGOLATAKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G AF ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALMEIDA, FML ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLUME, M BLYTH, S BOCCI, V BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BUYS, A CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L CASO, C CASSIO, V GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOCHULA, P CHOROWICZ, V CHRIN, JTM CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W DEFOIX, C DELLARICCA, G DELPIERRE, P DEMARIA, N DEANGELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERCQ, C LASO, MDMF DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DRESS, J DREES, KA DRIS, M DUFOUR, Y DUPONT, F EDSALL, D EHRET, R EKELOF, T EKSPONG, G ELSING, M ENGEL, JP ERSHAIDAT, N SANTO, ME FASSOULIOTIS, D FEINDT, M FENYUK, A FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FOUSSET, JL FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D GERBER, JP GILLESPIE, D GOKIELI, R GOLOB, B CADENAS, JJGY GOPAL, G GORN, L GORSKI, M GRACCO, V GRARD, F GRAZIANI, E GROSDIDIER, G GUNNARSSON, P GUY, J HAEDINGER, U HAHN, E HAHN, M HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERNANDO, JA HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D HONORE, PF HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P JACKSON, JN JACOBSSON, R JALOCHA, P JANIK, R JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONSSON, L JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KRAMMER, M KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUMSTEIN, Z KRUPINSKI, W KUBINEC, P KUCEWICZ, W KULKA, K KURVINEN, K LACASTA, C LAKTINEH, I LAMBROPOULOS, C LAMSA, JW LANCERI, L LANE, DW LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MAIO, A MALTEZOS, A MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C MARTINEZVIDAL, F MARTI, SIG MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIKULEC, I MIRABITO, L MITAROFF, WA MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIKOLAENKO, V NISS, P NOMEROTSKI, A NORMAND, A OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAGES, P PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PEREVOZCHIKOV, V PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIKOV, V PREST, M PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONJIN, V ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEDYKH, Y SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, L STAVROPOULOS, G STEPANIAK, K STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T TCHIKILEV, O THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRERM, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VANELDIK, J VEGNI, G VENTURA, L VENUS, W VERBEURRE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKE, D WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YU, L YUSHCHENKO, O ZACH, F ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZAVGOLATAKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G TI OBSERVATION OF ORBITALLY EXCITED B-MESONS SO PHYSICS LETTERS B LA English DT Article ID LUND MONTE-CARLO; JET FRAGMENTATION; E+E ANNIHILATION; DECAYS; PHYSICS AB Experimental evidence for the existence of orbitally excited B meson states is presented in an analysis of the B pi and B*pi distribution of Q = m(B**) - m(B(*)) - m(pi) using Z(0) decay data taken with the DELPHI detector at LEP. The mean Q-value of the decays B** --> B(*)pi is measured to be 284 +/-5 (stat.) +/- 15 (syst.) MeV/c(2), and the Gaussian width of the signal is 79 +/- 5 (stat.) +/- 8 (syst) MeV/c(2). This signal can be described as a single resonance of mass m = 5732+/-5 (stat.) +/- 20(syst.) MeV/c(2) and full width Gamma = 145 +/- 28 MeV/c(2). The observed shape is also consistent with the production of several broad and narrow states as predicted by the quark model and partly observed in the D-meson sector. The production rate of B** per b-jet is found to be 0.27 +/- 0.02(stat.) +/- 0.06 (syst.). C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM. FREE UNIV BRUSSELS,IIHE,B-1050 BRUSSELS,BELGIUM. UNIV MONS,FAC SCI,B-7000 MONS,BELGIUM. UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE. UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY. UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY. IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY. COMENIUS UNIV BRATISLAVA,FAC MATH & PHYS,BRATISLAVA 84215,SLOVAKIA. COLL FRANCE,IN2P3,PHYS CORPUSCULAIRE LAB,CNRS,F-75231 PARIS 05,FRANCE. CERN,CH-1211 GENEVA 23,SWITZERLAND. UNIV STRASBOURG 1,CTR RECH NUCL,IN2P3,CNRS,F-67037 STRASBOURG,FRANCE. NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS,GR-15310 ATHENS,GREECE. ACAD SCI CZECH REPUBL,INST PHYS,FZU,DIV HIGH ENERGY PHYS,CR-18040 PRAGUE 8,CZECH REPUBLIC. UNIV GENOA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY. IST NAZL FIS NUCL,I-16146 GENOA,ITALY. UNIV GRENOBLE 1,INST SCI NUCL,IN2P3,CNRS,F-38026 GRENOBLE,FRANCE. RES INST HIGH ENERGY PHYS,SEFT,SF-00014 HELSINKI,FINLAND. JOINT INST NUCL RES DUBNA,MOSCOW 101000,RUSSIA. UNIV KARLSRUHE,INST EXPTL KERNPHYS,D-76128 KARLSRUHE,GERMANY. INST NUCL PHYS,HIGH ENERGY PHYS LAB,PL-30055 KRAKOW 30,POLAND. CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL. UNIV PARIS 11,IN2P3,ACCELERATEUR LINEAIRE LAB,CNRS,F-91405 ORSAY,FRANCE. UNIV LANCASTER,SCH PHYS & MAT,LANCASTER LA1 4YB,ENGLAND. UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. UNIV PARIS 06,IN2P3,LPNHE,CNRS,F-75252 PARIS 05,FRANCE. UNIV PARIS 07,IN2P3,LPNHE,CNRS,F-75252 PARIS 05,FRANCE. LUND UNIV,DEPT PHYS,S-22363 LUND,SWEDEN. UNIV LYON 1,IPNL,IN2P3,CNRS,F-69622 VILLEURBANNE,FRANCE. UNIV COMPLUTENSE MADRID,E-28040 MADRID,SPAIN. UNIV AIX MARSEILLE 2,CPP,IN2P3,CNRS,F-13288 MARSEILLE 09,FRANCE. UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY. IST NAZL FIS NUCL,I-20133 MILAN,ITALY. NIELS BOHR INST,DK-2100 COPENHAGEN O,DENMARK. CHARLES UNIV,AREAL MFF,MFF,CTR NUCL,NC,CR-18000 PRAGUE 8,CZECH REPUBLIC. NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS. NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE. UNIV OSLO,DEPT PHYS,N-1000 OSLO 3,NORWAY. UNIV OVIEDO,DEPT FIS,E-33006 OVIEDO,SPAIN. UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND. UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY. IST NAZL FIS NUCL,I-35131 PADUA,ITALY. PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY. IST NAZL FIS NUCL,I-00173 ROME,ITALY. CENS,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE. IST NAZL FIS NUCL,IST SUPER SANITA,I-00161 ROME,ITALY. UNIV CANTABRIA,CSIC,CEAFM,E-39006 SANTANDER,SPAIN. INST HIGH ENERGY PHYS,PROTVINO,RUSSIA. UNIV LJUBLJANA,JOZEF STEFAN INST,LJUBLJANA 61000,SLOVENIA. UNIV LJUBLJANA,DEPT PHYS,LJUBLJANA 61000,SLOVENIA. UNIV STOCKHOLM,S-11385 STOCKHOLM,SWEDEN. UNIV TURIN,DIPARTIMENTO FIS SPERIMENTALE,I-10125 TURIN,ITALY. IST NAZL FIS NUCL,I-10125 TURIN,ITALY. UNIV TRIESTE,DIPARTMENTO FIS,I-34127 TRIESTE,ITALY. IST NAZL FIS NUCL,I-34127 TRIESTE,ITALY. UNIV UDINE,IST FIS,I-33100 UDINE,ITALY. FED UNIV RIO DE JANEIRO,BR-21945970 RIO JANEIRO,BRAZIL. UNIV UPPSALA,DEPT RADIAT SCI,S-75121 UPPSALA,SWEDEN. UNIV VALENCIA,DFAMN,E-46100 BURJASSOT,SPAIN. UNIV VALENCIA,CSIC,IFIC,E-46100 BURJASSOT,SPAIN. AUSTRIAN ACAD SCI,INST HOCHENERGIEPHYS,A-1050 VIENNA,AUSTRIA. INST NUCL STUDIES,PL-00681 WARSAW,POLAND. UNIV WARSAW,PL-00681 WARSAW,POLAND. UNIV WUPPERTAL,FACHBEREICH PHYS,D-42097 WUPPERTAL 1,GERMANY. RP ABREU, P (reprint author), UNIV LISBON,IST,LIP,AV ELIAS GARCIA 14-1O,P-1000 LISBON,PORTUGAL. 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KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KUIJTEN, H KUNIN, A DEGUEVARA, PL LANDI, G LANZANO, S LAURIKAINEN, P LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEE, JS LEE, KY LEEDOM, I LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LOHMANN, W LONGO, E LU, W LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACDERMOTT, M MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCMAHON, T MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSMALEN, R ROSSELET, P VANROSSUM, W ROTH, S RUBBIA, A RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANDERS, GS SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SON, D SOPCZAK, A SOULIMOV, V SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TROWITZSCH, G TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEILL, R WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, SX WYNHOFF, S ZU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YANUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHU, RY ZICHICHI, A VANDERZWAAN, BCC TI SEARCH FOR ANOMALOUS Z-]GAMMA-GAMMA-GAMMA EVENTS AT LEP SO PHYSICS LETTERS B LA English DT Article ID L3 EXPERIMENT; PHOTONS AB We have searched for anomalous Z --> gamma gamma gamma events with the L3 detector at LEP. No significant deviations from the expected QED e(+)e(-)-->gamma gamma gamma events are observed. The branching ratio upper limit for a composite Z decaying directly into three photons is found to be 1.0 x 10(-1) at 95% C.L. The branching ratio upper limits for the process Z-->gamma X,X-->gamma gamma are in the range of 0.4 to 1.3 x 10(-5), depending on the mass and width of the scalar particle X. In the context of a model with magnetic monopoles coupling to the Z, we find BR(Z-->gamma gamma gamma) < 0.8 x 10(-5) at 95% C.L; this results in a lower mass limit of 510 GeV for a magnetic monopole. C1 RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY. NIKHEF H, 1009 DB AMSTERDAM, NETHERLANDS. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. LAB ANNECY LE VIEUX PHYS PARTICULES, CNRS, IN2P3, F-74941 ANNECY LE VIEUX, FRANCE. JOHNS HOPKINS UNIV, BALTIMORE, MD USA. INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA. HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA. BOSTON UNIV, BOSTON, MA 02215 USA. NORTHEASTERN UNIV, BOSTON, MA 02115 USA. INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA. UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. MIT, CAMBRIDGE, MA 02139 USA. IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA. RES INST HIGH ENERGY PHYS, SEFT, SF-00014 HELSINKI, FINLAND. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST PHYS NUCL LYON, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE. CIEMAT, E-28040 MADRID, SPAIN. INST THEORET & EXPTL PHYS, MOSCOW 117259, RUSSIA. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. UNIV NAPLES, I-80125 NAPLES, ITALY. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. CALTECH, PASADENA, CA 91125 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. ST PETERSBURG NUCL PHYS INST, ST PETERSBURG, RUSSIA. UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN. BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA. KOREA ADV INST SCI & TECHNOL, CTR HIGH ENERGY PHYS, TAEJON 305701, SOUTH KOREA. UNIV ALABAMA, TUSCALOOSA, AL 35486 USA. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92093 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. DESY, INST HOCHENERGIEPHYS, D-15738 ZEUTHEN, GERMANY. ETH ZURICH, CH-8093 ZURICH, SWITZERLAND. UNIV HAMBURG, D-22761 HAMBURG, GERMANY. RP ACCIARRI, M (reprint author), IST NAZL FIS NUCL, VIA CELORIA 16, I-20133 MILAN, ITALY. RI Tsaregorodtsev, Andrei/E-3873-2016; Fiandrini, Emanuele/C-4549-2008; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Kirkby, Jasper/A-4973-2012; Servoli, Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; de la Cruz, Begona/K-7552-2014; Josa, Isabel/K-5184-2014; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Ferguson, Thomas/O-3444-2014; van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Sanchez, Eusebio/H-5228-2015; Duran, Ignacio/H-7254-2015; rodriguez calonge, francisco javier/H-9682-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Arce, Pedro/L-1268-2014; Roth, Stefan/J-2757-2016; OI Longo, Egidio/0000-0001-6238-6787; Tsaregorodtsev, Andrei/0000-0003-4618-520X; Diemoz, Marcella/0000-0002-3810-8530; Ludovici, Lucio/0000-0003-1970-9960; Kirkby, Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185; Cerrada, Marcos/0000-0003-0112-1691; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ferguson, Thomas/0000-0001-5822-3731; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283; Arce, Pedro/0000-0003-3009-0484; Roth, Stefan/0000-0003-3616-2223; Ambrosi, Giovanni/0000-0001-6977-9559 NR 17 TC 34 Z9 34 U1 1 U2 7 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 FEB 23 PY 1995 VL 345 IS 4 BP 609 EP 616 DI 10.1016/0370-2693(95)01612-T PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QJ711 UT WOS:A1995QJ71100044 ER PT J AU KIM, SK LOVEJOY, ER MOORE, CB AF KIM, SK LOVEJOY, ER MOORE, CB TI TRANSITION-STATE VIBRATIONAL LEVEL THRESHOLDS FOR THE DISSOCIATION OF TRIPLET KETENE SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID UNIMOLECULAR REACTION DYNAMICS; X3B1 METHYLENE CH2; POTENTIAL SURFACE; REACTION PROBABILITIES; SINGLET THRESHOLD; S0 FORMALDEHYDE; RATE CONSTANTS; BOND-BREAKING; PHOTOFRAGMENTATION; SPECTROSCOPY C1 NOAA,ERL,BOULDER,CO 80303. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. RI Kim, Sang Kyu/C-1613-2011 NR 74 TC 64 Z9 65 U1 1 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 22 PY 1995 VL 102 IS 8 BP 3202 EP 3219 DI 10.1063/1.468631 PG 18 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QH967 UT WOS:A1995QH96700021 ER PT J AU CURTISS, LA LUCAS, DJ POPLE, JA AF CURTISS, LA LUCAS, DJ POPLE, JA TI ENERGIES OF C2H5O AND C2H5O+ ISOMERS SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID GAUSSIAN-2 THEORY; RADICALS; ABINITIO; HEATS C1 NO MICHIGAN UNIV,DEPT PHYS,MARQUETTE,MI 49855. NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208. RP CURTISS, LA (reprint author), ARGONNE NATL LAB,DIV MAT SCI,DIV CHEM TECHNOL,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 32 TC 55 Z9 55 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 22 PY 1995 VL 102 IS 8 BP 3292 EP 3300 DI 10.1063/1.468640 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QH967 UT WOS:A1995QH96700030 ER PT J AU KUCHTA, B ROHLEDER, K ETTERS, RD BELAK, J AF KUCHTA, B ROHLEDER, K ETTERS, RD BELAK, J TI A MONTE-CARLO STUDY OF THE ALPHA-BETA ORDER-DISORDER TRANSITION IN SOLID NITROGEN SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID HIGH-PRESSURE; PHASE; DYNAMICS; N-2 C1 COLORADO STATE UNIV,DEPT PHYS,FT COLLINS,CO 80523. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP KUCHTA, B (reprint author), WROCLAW TECH UNIV,INST THEORET & PHYS CHEM,PL-50370 WROCLAW,POLAND. RI Kuchta, Bogdan/I-6471-2015 OI Kuchta, Bogdan/0000-0002-8635-4154 NR 27 TC 24 Z9 24 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 22 PY 1995 VL 102 IS 8 BP 3349 EP 3353 DI 10.1063/1.469208 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QH967 UT WOS:A1995QH96700037 ER PT J AU DANG, LX SMITH, DE AF DANG, LX SMITH, DE TI MEAN FORCE POTENTIAL FOR THE CALCIUM-CHLORIDE ION-PAIR IN WATER - COMMENT SO JOURNAL OF CHEMICAL PHYSICS LA English DT Note RP DANG, LX (reprint author), PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, POB 999, RICHLAND, WA 99352 USA. NR 13 TC 73 Z9 73 U1 4 U2 14 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 22 PY 1995 VL 102 IS 8 BP 3483 EP 3484 DI 10.1063/1.468572 PG 2 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QH967 UT WOS:A1995QH96700054 ER PT J AU SHEN, JK BASOLO, F KUBAS, GJ AF SHEN, JK BASOLO, F KUBAS, GJ TI THE ROLE OF SO2 AS A LIGAND TO MEDIATE ASSOCIATIVE SUBSTITUTION-REACTIONS OF SOME 18-ELECTRON MOLYBDENUM COMPLEXES SO JOURNAL OF ORGANOMETALLIC CHEMISTRY LA English DT Article DE MOLYBDENUM; SULFUR DIOXIDE; LIGAND SUBSTITUTION; KINETICS; MECHANISM ID CHEMISTRY AB Results of kinetic studies are reported for intramolecular PPh(3) substitution reactions of Mo(CO)(2)(eta(1)-L)(PPh(3))(2)(SO2) to form Mo(Co)(2)(eta(2)-L)(PPh(3))(SO2) (L = dmpe=(Me)(2)PC2H4P(Me)(2) and dppe=Ph(2)PC(2)H(4)PPh(2)) in THF as solvent. Activation parameters for the reactions are: Delta H-not equal values 12.3 kcal mol(-1) for dmpe and 16.7 kcal mol(-1) for dppe; and Delta S-not equal values -30.3 cal mol(-1) K for dmpe and -16.4 cal mol(-1) K for dppe. These results are consistent with an intramolecular associative mechanism. The facile associative pathway for the reaction is discussed in terms of the ability of SO, to accept a pair of electrons from the metal, with a bonding transformation of eta(2)-SO2 to eta(1)-pyramidal SO2, so maintaining a stable 18-electron count for the complex in the transition state. C1 NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208. LOS ALAMOS NATL LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. NR 13 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-328X J9 J ORGANOMET CHEM JI J. Organomet. Chem. PD FEB 22 PY 1995 VL 488 IS 1-2 BP C1 EP C3 DI 10.1016/0022-328X(94)00018-8 PG 3 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA QG254 UT WOS:A1995QG25400034 ER PT J AU GOSZTOLA, D YAMADA, H WASIELEWSKI, MR AF GOSZTOLA, D YAMADA, H WASIELEWSKI, MR TI ELECTRIC-FIELD EFFECTS OF PHOTOGENERATED ION-PAIRS ON NEARBY MOLECULES - A MODEL FOR THE CAROTENOID BAND SHIFT IN PHOTOSYNTHESIS SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID EXCITED SINGLET-STATE; BLODGETT MONOLAYER FILMS; CATION RADICALS; PORPHYRINS; DEPENDENCE; DICATIONS; LIFETIME; ENERGY AB Photoinduced charge separation within a zinc porphyrin electron donor-pyromellitimide electron acceptor pair possessing an 8.4 Angstrom center-to-center distance and a linear orientation is shown to induce large electrochromic effects on the ground state absorption spectrum of a nearby carotenoid molecule. The orientation of the C-C backbone of the carotenoid is restricted relative to the direction of the electric field produced by the photogenerated ion pair. This is accomplished by covalently linking the electron donor-acceptor pair to the carotenoid with a calix[4]arene bridge. The bridge maintains its cone conformation resulting in an average dihedral angle of 35 degrees between the donor-acceptor axis and the C-C backbone of the carotenoid. Using picosecond transient absorption spectroscopy, a 15 nm electrochromic red shift in the ground state absorption spectrum of the carotenoid was readily observed during the 3.7 ns lifetime of the photogenerated ion pair. The magnitude of this shift depends on the dielectric constant of the surrounding solvent. The data is used to calculate an electric field strength of about 5.5 MV/cm at the carotenoid in toluene. The magnitude of the electric field produced by the ion pair at the carotenoid is larger than the highest fields that can be applied externally, This approach can be used to study the influence of electric fields produced by ion pairs on the photophysics and photochemistry of nearby molecules. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208. RI Gosztola, David/D-9320-2011; Yamada, Hiroko/G-8744-2013 OI Gosztola, David/0000-0003-2674-1379; Yamada, Hiroko/0000-0002-2138-5902 NR 32 TC 51 Z9 51 U1 3 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 22 PY 1995 VL 117 IS 7 BP 2041 EP 2048 DI 10.1021/ja00112a018 PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA QH930 UT WOS:A1995QH93000018 ER PT J AU MELENDRES, CA BEDEN, B BOWMAKER, GA AF MELENDRES, CA BEDEN, B BOWMAKER, GA TI FAR-INFRARED SPECTROSCOPY OF A PLATINUM-ELECTRODE IN-SITU USING A SYNCHROTRON SOURCE SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Note DE FAR INFRARED SPECTROSCOPY; SYNCHROTRON SOURCE ID SURFACES; GOLD C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. UNIV POITIERS,CHIM LAB 1,CNRS,URA 350,POITIERS,FRANCE. UNIV AUCKLAND,DEPT CHEM,AUCKLAND,NEW ZEALAND. RP MELENDRES, CA (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 12 TC 15 Z9 15 U1 1 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-0728 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD FEB 21 PY 1995 VL 383 IS 1-2 BP 191 EP 193 DI 10.1016/0022-0728(94)03764-T PG 3 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA QQ907 UT WOS:A1995QQ90700026 ER PT J AU MANDAL, BK BIHARI, B SINHA, AK KAMATH, M CHEN, L AF MANDAL, BK BIHARI, B SINHA, AK KAMATH, M CHEN, L TI 3RD-ORDER NONLINEAR-OPTICAL RESPONSE IN A MULTILAYERED PHTHALOCYANINE COMPOSITE SO APPLIED PHYSICS LETTERS LA English DT Article ID METALLO C1 ARGONNE NATL LAB, DIV CHEM, ARGONNE, IL 60439 USA. RP MANDAL, BK (reprint author), IIT, DEPT CHEM, CHICAGO, IL 60616 USA. NR 18 TC 45 Z9 46 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 20 PY 1995 VL 66 IS 8 BP 932 EP 934 DI 10.1063/1.113601 PG 3 WC Physics, Applied SC Physics GA QH861 UT WOS:A1995QH86100010 ER PT J AU CAMPBELL, IH JOSWICK, MD SMITH, DL MILES, RH AF CAMPBELL, IH JOSWICK, MD SMITH, DL MILES, RH TI OBSERVATION OF PIEZOELECTRIC EFFECTS IN STRAINED RESONANT-TUNNELING STRUCTURES GROWN ON (111)B GAAS SO APPLIED PHYSICS LETTERS LA English DT Article ID MATERIAL PARAMETERS; SUPERLATTICE C1 HUGHES RES LABS,MALIBU,CA 90265. RP CAMPBELL, IH (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 9 TC 9 Z9 9 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 20 PY 1995 VL 66 IS 8 BP 988 EP 990 DI 10.1063/1.113821 PG 3 WC Physics, Applied SC Physics GA QH861 UT WOS:A1995QH86100029 ER PT J AU FORTNER, J KARPOV, VG SABOUNGI, ML AF FORTNER, J KARPOV, VG SABOUNGI, ML TI MEYER-NELDEL RULE FOR LIQUID SEMICONDUCTORS SO APPLIED PHYSICS LETTERS LA English DT Article ID ALLOYS C1 STATE TECH UNIV,ST PETERSBURG 195251,RUSSIA. RP FORTNER, J (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Karpov, Victor/I-5169-2012; Saboungi, Marie-Louise/C-5920-2013 OI Saboungi, Marie-Louise/0000-0002-0607-4815 NR 14 TC 36 Z9 36 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 20 PY 1995 VL 66 IS 8 BP 997 EP 999 DI 10.1063/1.113824 PG 3 WC Physics, Applied SC Physics GA QH861 UT WOS:A1995QH86100032 ER PT J AU OVERBY, LH BUCKPITT, AR LAWTON, MP ATTAASAFOADJEI, E SCHULZE, J PHILPOT, RM AF OVERBY, LH BUCKPITT, AR LAWTON, MP ATTAASAFOADJEI, E SCHULZE, J PHILPOT, RM TI CHARACTERIZATION OF FLAVIN-CONTAINING MONOOXYGENASE-5 (FMO5) CLONED FROM HUMAN AND GUINEA-PIG - EVIDENCE THAT THE UNIQUE CATALYTIC PROPERTIES OF FMO5 ARE NOT CONFINED TO THE RABBIT ORTHOLOG SO ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS LA English DT Article ID FUNCTION AMINE OXIDASE; LIVER-MICROSOMES; ESCHERICHIA-COLI; PRIMARY ALKYLAMINES; COVALENT STRUCTURE; RIBONUCLEIC-ACID; PRIMARY SEQUENCE; MULTIPLE FORMS; LUNG; PURIFICATION AB Several full-length clones encoding the human and guinea pig orthologs of flavin-containing monooxygenase 5 (FMO5) have been isolated from libraries constructed with hepatic mRNA. The clones were detected by hybridization with the cDNA encoding FMO5 expressed in rabbit. The human and guinea pig cDNAs encode for proteins of 533 amino acids that contain putative pyrophosphate binding domains characteristic of mammalian FMOs. The sequences derived for the human and guinea pig FMO5 proteins are 87% identical and are 85 and 82% identical, respectively, to the sequence of rabbit FMO5. As is the case with other FMOs, FMO5 in human and guinea pig is encoded by multiple transcripts. Rabbit FMO5 expressed in Escherichia coli was purified and used to elicit antibodies in goat. These antibodies detected FMO5 in samples from livers of adult humans, rabbits, and guinea pigs and fetal livers of humans. The human and guinea pig forms of FMO5 were expressed in E. coli and characterized. Neither enzyme effectively catalyzed the metabolism of methimazole, a general FMO substrate; however, both were active with n-octylamine. The responses of the human FMO5 and guinea pig FMO5 to detergent, ions and elevated temperature are all similar to the responses described for rabbit FMO5. These results indicate that the unique properties of FMO5 from rabbit are species-independent and that this form of the flavin-containing monooxygenase is not readily classified as a drug-metabolizing enzyme. (C) 1995 Academic Press, Inc. C1 NIEHS,CELLULAR & MOLEC PHARMACOL LAB,MOLEC PHARMACOL SECT,RES TRIANGLE PK,NC 27709. LAWRENCE LIVERMORE NATL LAB,DEPT PHARMACOL & TOXICOL,DAVIS,CA 95616. UNIV MUNICH,WALTHER STRAUB INST PHARMAKOL & TOXIKOL,D-80336 MUNICH,GERMANY. RI atta, ayman/E-9273-2017 NR 47 TC 66 Z9 68 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0003-9861 J9 ARCH BIOCHEM BIOPHYS JI Arch. Biochem. Biophys. PD FEB 20 PY 1995 VL 317 IS 1 BP 275 EP 284 DI 10.1006/abbi.1995.1163 PG 10 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA QK397 UT WOS:A1995QK39700036 PM 7872795 ER PT J AU GLENDENNING, NK AF GLENDENNING, NK TI TEST OF WHEN FREE PRECESSION OF A PULSAR CANNOT MIMIC AN ORBITING PLANET SO ASTROPHYSICAL JOURNAL LA English DT Article DE PLANETARY SYSTEMS; PULSARS, GENERAL ID NEUTRON-STARS AB Precession can modulate pulsar frequencies in much the same way as the Doppler shift caused by orbital motion with a planetary companion. We derive a relation among observables for situations where a companion is suspected, which if satisfied, would make it difficult to distinguish planetary modulation of pulsar frequency from that caused by free precession of an isolated pulsar. Conversely, if the relation cannot be satisfied, precession is ruled out, and a planetary hypothesis thereby strengthened. RP GLENDENNING, NK (reprint author), UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV NUCL SCI, 1 CYCLOTRON RD, BERKELEY, CA 94720 USA. NR 15 TC 2 Z9 2 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 20 PY 1995 VL 440 IS 2 BP 881 EP 883 DI 10.1086/175325 PN 1 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QG505 UT WOS:A1995QG50500041 ER PT J AU DODELSON, S KOSOWSKY, A MYERS, ST AF DODELSON, S KOSOWSKY, A MYERS, ST TI NOISE CORRELATIONS IN COSMIC MICROWAVE BACKGROUND EXPERIMENTS SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC MICROWAVE BACKGROUND; METHODS, DATA ANALYSIS AB Many analyses of microwave background experiments neglect the correlation of noise in different frequency or polarization channels. We show that these correlations, should they be present, can lead to severe misinterpretation of an experiment. In particular, correlated noise arising from either electronics or atmosphere may mimic a cosmic signal. We quantify how the likelihood function for a given experiment varies with noise correlation, using both simple analytic models and actual data. For a typical microwave background anisotropy experiment, noise correlations at the level of 1% of the overall noise can seriously reduce the significance of a given detection. C1 UNIV CHICAGO,ENRICO FERMI INST,DEPT PHYS,CHICAGO,IL 60637. UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. CALTECH,DIV PHYS MATH & ASTRON,PASADENA,CA 91125. RP DODELSON, S (reprint author), FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,POB 500,BATAVIA,IL 60510, USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 20 PY 1995 VL 440 IS 2 BP L37 EP L39 DI 10.1086/187755 PN 2 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QG508 UT WOS:A1995QG50800002 ER PT J AU PERLMUTTER, S PENNYPACKER, CR GOLDHABER, G GOOBAR, A MULLER, RA NEWBERG, HJM DESAI, J KIM, AG KIM, MY SMALL, IA BOYLE, BJ CRAWFORD, CS MCMAHON, RG BUNCLARK, PS CARTER, D IRWIN, MJ TERLEVICH, RJ ELLIS, RS GLAZEBROOK, K COUCH, WJ MOULD, JR SMALL, TA ABRAHAM, RG AF PERLMUTTER, S PENNYPACKER, CR GOLDHABER, G GOOBAR, A MULLER, RA NEWBERG, HJM DESAI, J KIM, AG KIM, MY SMALL, IA BOYLE, BJ CRAWFORD, CS MCMAHON, RG BUNCLARK, PS CARTER, D IRWIN, MJ TERLEVICH, RJ ELLIS, RS GLAZEBROOK, K COUCH, WJ MOULD, JR SMALL, TA ABRAHAM, RG TI A SUPERNOVA AT Z=0.458 AND IMPLICATIONS FOR MEASURING THE COSMOLOGICAL DECELERATION SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMOLOGY, DISTANCE SCALE; DARK MATTER; SUPERNOVAE, GENERAL; SUPERNOVAE, INDIVIDUAL, SN 1999BI ID IA SUPERNOVAE; LIGHT CURVES AB We have begun a program to discover high-redshift supernovae (z approximate to 0.25-0.5) and study them with follow-up photometry and spectroscopy. We report here our first discovery, a supernova at z = 0.458. The photometry for this supernova closely matches the light curve calculated for this redshift from the template of well-observed nearby Type Ia supernovae. We discuss the measurement of the deceleration parameter q(0) using such high-redshift supernovae and give the best fit value assuming this one supernova is a normal, unextincted Type Ia. We describe the main sources of error in such a measurement of q(0) and ways to reduce these errors. C1 UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND. ROYAL GREENWICH OBSERV,CAMBRIDGE CB3 0EZ,ENGLAND. UNIV DURHAM,DURHAM DH1 3LE,ENGLAND. UNIV NEW S WALES,KENSINGTON,NSW 2083,AUSTRALIA. CALTECH,PASADENA,CA 91125. DOMINION ASTROPHYS OBSERV,VICTORIA,BC V8X 4M6,CANADA. RP PERLMUTTER, S (reprint author), UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720, USA. RI Perlmutter, Saul/I-3505-2015; Glazebrook, Karl/N-3488-2015; OI Perlmutter, Saul/0000-0002-4436-4661; Glazebrook, Karl/0000-0002-3254-9044; McMahon, Richard/0000-0001-8447-8869 NR 23 TC 72 Z9 72 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 20 PY 1995 VL 440 IS 2 BP L41 EP L44 DI 10.1086/187756 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QG508 UT WOS:A1995QG50800003 ER PT J AU BRANDT, D AF BRANDT, D TI SOFTWARE INTEGRATOR FILTER IGNORES DROPOUTS SO ELECTRONIC DESIGN LA English DT Article RP BRANDT, D (reprint author), SANDIA NATL LABS,MS 0537,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PENTON PUBL INC PI CLEVELAND PA 1100 SUPERIOR AVE, CLEVELAND, OH 44114 SN 0013-4872 J9 ELECTRON DES JI Electron. Des. PD FEB 20 PY 1995 VL 43 IS 4 BP 146 EP 147 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA QH611 UT WOS:A1995QH61100022 ER PT J AU HELZLSOUER, KJ HARRIS, EL PARSHAD, R FOGEL, S BIGBEE, WL SANFORD, KK AF HELZLSOUER, KJ HARRIS, EL PARSHAD, R FOGEL, S BIGBEE, WL SANFORD, KK TI FAMILIAL CLUSTERING OF BREAST-CANCER - POSSIBLE INTERACTION BETWEEN DNA-REPAIR PROFICIENCY AND RADIATION EXPOSURE IN THE DEVELOPMENT OF BREAST-CANCER SO INTERNATIONAL JOURNAL OF CANCER LA English DT Article ID FLUOROSCOPIC EXAMINATIONS; ATAXIA-TELANGIECTASIA; CHROMATID DAMAGE; TUBERCULOSIS; SENSITIVITY; IRRADIATION; LINKAGE; WOMEN; CHEST; LOCUS AB The capacity of peripheral blood lymphocytes to repair X-ray-induced DNA damage, manifest as chromatid damage 30-90 min after G(2)-phase X-irradiation, was measured among available members of a family exhibiting a cluster of breast-cancer cases occurring in one generation. The cancer patients had been exposed to repeated chest fluoroscopic examinations during early childhood and adolescence. The development of breast cancer was correlated with DNA repair proficiency and history of radiation exposure. The results of the family study provide preliminary support for the hypothesis that a deficiency in repair of X-irradiation DNA damage may be a susceptibility factor for the development of breast cancer. This hypothesis, however, requires confirmation in a larger study. Studying the combined effect of susceptibility factors and environmental exposures may enhance our knowledge of the etiology of breast cancer and provide leads for effective prevention strategies aimed at reducing exposures or altering susceptibility to unavoidable exposures. (C) 1995 Wiley-Liss, Inc. C1 KAISER PERMANENTE,CTR HLTH RES,PORTLAND,OR. HOWARD UNIV,COLL MED,DEPT PATHOL,WASHINGTON,DC 20059. JOHNS HOPKINS UNIV HOSP,DEPT SURG,BALTIMORE,MD. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA. NCI,CELLULAR & MOLEC BIOL LAB,BETHESDA,MD 20892. RP HELZLSOUER, KJ (reprint author), JOHNS HOPKINS MED INST,SCH HYG & PUBL HLTH,DEPT EPIDEMIOL,ROOM 6033,615 N WOLFE ST,BALTIMORE,MD 21205, USA. NR 20 TC 53 Z9 55 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0020-7136 J9 INT J CANCER JI Int. J. Cancer PD FEB 20 PY 1995 VL 64 IS 1 BP 14 EP 17 DI 10.1002/ijc.2910640105 PG 4 WC Oncology SC Oncology GA QW977 UT WOS:A1995QW97700004 PM 7665242 ER PT J AU BOROVSKY, JE AF BOROVSKY, JE TI AN ELECTRODYNAMIC DESCRIPTION OF LIGHTNING RETURN STROKES AND DART LEADERS - GUIDED-WAVE PROPAGATION ALONG CONDUCTING CYLINDRICAL CHANNELS SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Review ID TRANSMISSION-LINE MODEL; ELECTROMAGNETIC-FIELDS; PEAK CURRENT; BASE CURRENT; RADIATION; THUNDERSTORM; VELOCITY; FLASHES; DISCHARGES; SIMULATION AB The return-stroke breakdown pulse and the dart leader we treated as electric waves guided by conducting lightning channels; such waves are launched when current is injected into a conducting channel (producing the dart leader) or when charge on a channel begins to drain to Earth (producing the return stroke). The guided waves are self-consistent solutions to the full set of Maxwell's equations, obeying physical boundary conditions for cylindrical channels. These waves are shown (1) to move with velocities substantially slower than c along the channel, (2) to push current inside the lightning channel, (3) to move charge and voltage along the channel, and (4) to transport energy along and into the channel via Poynting flux. The velocity of a guided wave is a function of only three parameters: the channel radius r(ch), the channel temperature T and the risetime Delta t of the wave front. These velocities are found to fall in the range of velocities bf return strokes and of dart leaders. The wave amplitude is fixed by fixing one parameter in addition to r(ch), T, and Delta t; thus four parameters fully determine the velocity of the wave, the voltage of the wave, the current of the wave, the electric field of the wave, the linear charge density of the wave, the power carried by the wave, and the power delivered by the wave into the channel. For an example return stroke those predicted quantities are in agreement with experimental observations and for an example dart leader those predicted quantities are consistent with the limited measurements. The dart leader and the return stroke are caused by the same type of guided electromagnetic waves: the difference in velocity is owed mostly to the difference in channel temperature In the case of the dart leader the waves deliver Poynting flux along the outside of the channel down from a thundercloud:generator to the downward-propagating wave front. At the wave front of the dart leader the delivered energy goes into heating the channel and into storage in the form of E(2)/8 pi around the newly charged channel. In the case of the return stroke the Poynting flux is localized to the vicinity of the wave front where stored energy E(2)/8 pi is delivered radially inward onto the channel to heat the channel in the propagating front. The net result of a dart leader and return stroke is that charge is moved from the cloud to the ground and that energy is moved from the cloud onto the channel. RP BOROVSKY, JE (reprint author), LOS ALAMOS NATL LAB, SPACE & ATMOSPHER SCI GRP, MAIL STOP D466, LOS ALAMOS, NM 87545 USA. NR 123 TC 24 Z9 27 U1 4 U2 10 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD FEB 20 PY 1995 VL 100 IS D2 BP 2697 EP 2726 DI 10.1029/94JD00407 PG 30 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QJ630 UT WOS:A1995QJ63000001 ER PT J AU BALBES, MJ FARRELL, MM BOYD, RN GU, X HENCHECK, M KALEN, JD MITCHELL, CA KOLATA, JJ LAMKIN, K SMITH, R TIGHE, R ASHKTORAB, K BECCHETTI, FD BROWN, J ROBERTS, D WANG, TF HUMPHREY, D VOURVOPOULOS, G ISLAM, MS AF BALBES, MJ FARRELL, MM BOYD, RN GU, X HENCHECK, M KALEN, JD MITCHELL, CA KOLATA, JJ LAMKIN, K SMITH, R TIGHE, R ASHKTORAB, K BECCHETTI, FD BROWN, J ROBERTS, D WANG, TF HUMPHREY, D VOURVOPOULOS, G ISLAM, MS TI CROSS-SECTIONS AND REACTION-RATES OF D+LI-8 REACTIONS INVOLVED IN BIG-BANG NUCLEOSYNTHESIS SO NUCLEAR PHYSICS A LA English DT Article DE H-2(LI-8, LI-7), (LI-8, BE-9), (LI-8, LI-9); E(LAB)=8-14 MEV; MEASURED SIGMA(E,THETA); DEDUCED REACTION RATES ID PRIMORDIAL NUCLEOSYNTHESIS; NUCLEAR-REACTIONS; EARLY UNIVERSE; LI-8; DIFFUSION; BEAM AB We have measured angular distributions of the H-2(Li-8, Li-7)H-3 and H-2(Li-8, Be-9)n reations at E(c.m.) = 1.5 to 2.8 MeV using an Li-8-radioactive-beam technique. Astrophysical S-factors and reaction rates were calculated from the measured cross sections. Although the H-2(8Li, Be-9)n cross section is small, it can contribute to Be-9 synthesis, The H-2(Li-8, Li-7)H-3 reaction has a sufficiently large cross section to destroy Li-8, which may decrease the synthesis of heavier elements. No products from the H-2(Li-8, Li-9)p reaction were detected. We also present the results of calculations using the inhomogeneous model of primordial nucleosynthesis in several regions of parameter space. C1 OHIO STATE UNIV,DEPT ASTRON,COLUMBUS,OH 43210. UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556. HOSP UNIV PENN,DEPT RADIOL,DIV NUCL MED,PHILADELPHIA,PA 19104. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. WESTERN KENTUCKY UNIV,DEPT PHYS,BOWLING GREEN,KY 42101. BALL STATE UNIV,DEPT PHYS,MUNCIE,IN 47306. RP BALBES, MJ (reprint author), OHIO STATE UNIV,DEPT PHYS,174 W 18TH AVE,COLUMBUS,OH 43210, USA. RI Brown, James/A-7373-2012 OI Brown, James/0000-0003-0548-8634 NR 27 TC 11 Z9 13 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 FEB 20 PY 1995 VL 584 IS 2 BP 315 EP 334 DI 10.1016/0375-9474(94)00484-5 PG 20 WC Physics, Nuclear SC Physics GA QH036 UT WOS:A1995QH03600005 ER PT J AU LEE, TK AF LEE, TK TI LARGE-ORDER BEHAVIOR AND NONPERTURBATIVE EFFECTS SO NUCLEAR PHYSICS B LA English DT Article ID HIGH-ENERGY AB We consider the energy-dependence of the large-order behavior of forward scattering amplitudes in theories having explicit mass parameters and instanton solutions. We show that in weak coupling theories the exponential part of the Espinosa-Ringwald type cross section can be determined by taking the minimum element of the perturbative series, suggesting that the series is asymptotic. This observation enables us to calculate the nonperturbative cross section by the perturbation of the Borel transform sigma(b) about the instanton-anti-instanton singularity. The anomalous cross section in the standard model using the leading energy-dependent sigma(b) is presented. RP LEE, TK (reprint author), FERMILAB NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD FEB 20 PY 1995 VL 436 IS 1-2 BP 129 EP 140 DI 10.1016/0550-3213(94)00528-M PG 12 WC Physics, Particles & Fields SC Physics GA QG984 UT WOS:A1995QG98400006 ER PT J AU ALVERO, L CONTOPANAGOS, H AF ALVERO, L CONTOPANAGOS, H TI NON-LEADING LOGARITHMS IN PRINCIPAL-VALUE RESUMMATION SO NUCLEAR PHYSICS B LA English DT Article ID YAN CROSS-SECTION; LARGE PERTURBATIVE CORRECTIONS; LARGE INFRARED CORRECTIONS; LEPTON-PAIR PRODUCTION; HARD PROCESSES; SOFT GLUONS; QCD; EXPONENTIATION; NORMALIZATION; ORDER AB We apply the method of principal-value resummation of large momentum-dependent radiative corrections to the calculation of the Drell-Yan cross section, We sum all next-to-leading logarithms and provide numerical results for the resummed exponent and the corresponding hard scattering function. C1 ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439. RP ALVERO, L (reprint author), SUNY STONY BROOK,INST THEORET PHYS,STONY BROOK,NY 11794, USA. NR 23 TC 13 Z9 13 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD FEB 20 PY 1995 VL 436 IS 1-2 BP 184 EP 212 DI 10.1016/0550-3213(94)00549-T PG 29 WC Physics, Particles & Fields SC Physics GA QG984 UT WOS:A1995QG98400009 ER PT J AU KEANE, PM BURDETT, JK AF KEANE, PM BURDETT, JK TI ELECTRON COUNT CONTROL OF THE STRUCTURES OF THE 214 SUPERCONDUCTORS LA(2-X)M(X)CUO(4) (M=SR, BA) SO PHYSICA C LA English DT Article ID TRANSITION-TEMPERATURES; OXIDE SUPERCONDUCTORS; LA2-XBAXCUO4; CUPRATE; LA2CUO4; BANDS AB A detailed series of band-structure calculations using the tight-binding method have been performed on the LTO, LTT, and HTT phases of the Sr and Ba substituted La2CuO4 systems. The effects of the subtle geometric changes that occur upon doping on the electronic band structure have been investigated. It is shown that the variable electronic occupation of the highest occupied can be used to understand the complex structural behaviors in these systems. C1 UNIV CHICAGO,JAMES FRANCK INST,DEPT CHEM,CHICAGO,IL 60637. UNIV CHICAGO,NATL SCI FDN,SCI & TECHNOL CTR SUPERCONDUCT,CHICAGO,IL 60637. UNIV CHICAGO,DEPT CHEM,CHICAGO,IL 60637. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. NR 19 TC 1 Z9 1 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 FEB 20 PY 1995 VL 243 IS 1-2 BP 53 EP 59 DI 10.1016/0921-4534(94)02446-4 PG 7 WC Physics, Applied SC Physics GA QJ214 UT WOS:A1995QJ21400008 ER PT J AU HOLESINGER, TG PHILLIPS, DS COULTER, JY WILLIS, JO PETERSON, DE AF HOLESINGER, TG PHILLIPS, DS COULTER, JY WILLIS, JO PETERSON, DE TI ISOTHERMAL MELT PROCESSING OF BI-2212 THICK-FILMS SO PHYSICA C LA English DT Article ID CA-CU-O; BI2SR2CACU2OY; OXYGEN; SUPERCONDUCTOR AB An alternative melt-processing technique has been developed for the fabrication of Bi2Sr2CaCu2Oy (Bi-2212) thick films at temperatures over 100 degrees C lower than those employed in conventional Bi-2212 melt processing. Isothermal melt processing combines the melting and solidification steps at the same temperature [T.G. Holesinger et al., Appl. Phys. Lett. 63 (1993) 982]. This technique is possible due to the large drop in the solidus temperature with decreasing oxygen partial pressure. High-quality thick films were processed at temperatures as low as 770 degrees C. Such films were found to be well-textured, contain relatively few secondary phases, and possess critical current densities over 1 X 10(5) A/cm(2) at 4 K in self-field. RP HOLESINGER, TG (reprint author), LOS ALAMOS NATL LAB,CTR SUPERCONDUCT TECHNOL,POB 1663,LOS ALAMOS,NM 87545, USA. NR 13 TC 24 Z9 24 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD FEB 20 PY 1995 VL 243 IS 1-2 BP 93 EP 102 DI 10.1016/0921-4534(94)02455-3 PG 10 WC Physics, Applied SC Physics GA QJ214 UT WOS:A1995QJ21400012 ER PT J AU PONOMAREV, YG AMINOV, BA HEIN, MA HEINRICHS, H KRESIN, VZ MULLER, G PIEL, H ROSNER, K TCHESNOKOV, SV TSOKUR, EB WEHLER, D WINZER, K YARYGIN, AV YUSUPOV, KT AF PONOMAREV, YG AMINOV, BA HEIN, MA HEINRICHS, H KRESIN, VZ MULLER, G PIEL, H ROSNER, K TCHESNOKOV, SV TSOKUR, EB WEHLER, D WINZER, K YARYGIN, AV YUSUPOV, KT TI JOSEPHSON EFFECT AND SINGLE-PARTICLE TUNNELING IN YBA2CU3O7-X AND YBBA2CU3O7-X SINGLE-CRYSTAL BREAK JUNCTIONS SO PHYSICA C LA English DT Article ID ENERGY-GAP; PLANAR JUNCTIONS; SUPERCONDUCTORS; FABRICATION; CONTACTS; SURFACE AB We have studied the current-voltage characteristics of break junctions in single crystals of YBa2Cu3O7-x and YbBa2Cu3O7-x at helium temperature. For a YBa2Cu3O7-x Josephson junction Fiske resonances in low magnetic fields have been observed in the I(V) characteristic, thus proving the tunneling nature of the contact. The reduced velocity of the electromagnetic wave in the contact area has been calculated to be c/c(0) approximate to 0.018 (c is the Swihart velocity). The ratio of the barrier thickness d(1) to the relative dielectric constant of the barrier epsilon was found to be d(1)/epsilon=0.09 nm. In the quasiparticle tunneling regime, the YbBa2Cu3O7-x break junctions showed in some cases I(V) characteristics with a relatively small excess current at ''sub-gap'' voltages and a steep rise of the current at the ''gap'' voltage V-g=2 Delta/e. The ''BCS-like'' form of the observedI(V) characteristics seems to be in favor of s wave superconductivity. C1 UNIV WUPPERTAL,FACHBEREICH PHYS,D-42097 WUPPERTAL,GERMANY. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. MOSCOW MV LOMONOSOV STATE UNIV,FAC PHYS,MOSCOW 119899,RUSSIA. UNIV GOTTINGEN,INST PHYS 1,W-3400 GOTTINGEN,GERMANY. RI Ponomarev, Yaroslav/G-5530-2010; Chesnokov, Sergey/H-4842-2011 OI Ponomarev, Yaroslav/0000-0002-4857-0315; NR 60 TC 23 Z9 23 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD FEB 20 PY 1995 VL 243 IS 1-2 BP 167 EP 176 DI 10.1016/0921-4534(94)02452-9 PG 10 WC Physics, Applied SC Physics GA QJ214 UT WOS:A1995QJ21400021 ER PT J AU ALBER, T BACHLER, J BARTKE, J BIALKOWSKA, H BLOOMER, MA BOCK, R BRAITHWAITE, WJ BRINKMANN, D BROCKMANN, R BUNCIC, P CHAN, P CRAMER, PB CRAMER, JG DERADO, I ECKARDT, V ESCHKE, J FAVUZZI, C FERENC, D FLEISCHMANN, B FOKA, P FREUND, P FUCHS, M GAZDZICKI, M GLADYSZ, E HARRIS, JW HOFFMAN, M JACOBS, P KABANA, S KADIJA, K KOSIEC, J KOWALSKI, M KUHMICHEL, A LAHANAS, M LEE, JY LJUBICIC, A MARGETIS, S MITCHELL, JT MORSE, RJ NAPPI, E ODYNIEC, G PAIC, G PANAGIOTOU, ED PETRIDIS, A PIPER, A POSA, F POSKANZER, AM PUHLHOFER, F RAUCH, W RENFORDT, R RETYK, W ROHRICH, D ROLAND, G ROTHARD, H RUNGE, K SANDOVAL, A SCHAMBACH, J SCHMITZ, N SCHMOETTEN, E SCHNEIDER, I SEYBOTH, P SEYERLEIN, J SKRZYPCZAK, E SPINELLI, P STEFANSKY, P STOCK, R STROBELE, H TRAINOR, TA VASILEIADIS, G VASSILIOU, M VRANIC, D WENIG, S WOSIEK, B AF ALBER, T BACHLER, J BARTKE, J BIALKOWSKA, H BLOOMER, MA BOCK, R BRAITHWAITE, WJ BRINKMANN, D BROCKMANN, R BUNCIC, P CHAN, P CRAMER, PB CRAMER, JG DERADO, I ECKARDT, V ESCHKE, J FAVUZZI, C FERENC, D FLEISCHMANN, B FOKA, P FREUND, P FUCHS, M GAZDZICKI, M GLADYSZ, E HARRIS, JW HOFFMAN, M JACOBS, P KABANA, S KADIJA, K KOSIEC, J KOWALSKI, M KUHMICHEL, A LAHANAS, M LEE, JY LJUBICIC, A MARGETIS, S MITCHELL, JT MORSE, RJ NAPPI, E ODYNIEC, G PAIC, G PANAGIOTOU, ED PETRIDIS, A PIPER, A POSA, F POSKANZER, AM PUHLHOFER, F RAUCH, W RENFORDT, R RETYK, W ROHRICH, D ROLAND, G ROTHARD, H RUNGE, K SANDOVAL, A SCHAMBACH, J SCHMITZ, N SCHMOETTEN, E SCHNEIDER, I SEYBOTH, P SEYERLEIN, J SKRZYPCZAK, E SPINELLI, P STEFANSKY, P STOCK, R STROBELE, H TRAINOR, TA VASILEIADIS, G VASSILIOU, M VRANIC, D WENIG, S WOSIEK, B TI TRANSVERSE-MOMENTUM DEPENDENCE OF BOSE-EINSTEIN CORRELATIONS IN 200A GEV/C S+A COLLISIONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEAVY-ION COLLISIONS; QUANTUM MOLECULAR-DYNAMICS; PION INTERFEROMETRY; NUCLEAR COLLISIONS; 2-PION CORRELATIONS; NA35 C1 UNIV ATHENS,DEPT PHYS,ATHENS,GREECE. UNIV BARI,DIPARTMENTO FIS,BARI,ITALY. IST NAZL FIS NUCL,I-70126 BARI,ITALY. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. INST NUCL PHYS,KRAKOW,POLAND. GESELL SCHWERIONENFORSCH INST DARMSTADT,W-6100 DARMSTADT,GERMANY. UNIV FRANKFURT,FACHBEREICH PHYS,W-6000 FRANKFURT,GERMANY. UNIV FREIBURG,FAK PHYS,W-7800 FREIBURG,GERMANY. UNIV MARBURG,FACHBEREICH PHYS,W-3550 MARBURG,GERMANY. UNIV WARSAW,INST EXPTL PHYS,WARSAW,POLAND. INST NUCL STUDIES,PL-00681 WARSAW,POLAND. UNIV WASHINGTON,NUCL PHYS LAB,SEATTLE,WA 98195. RUDJER BOSKOVIC INST,ZAGREB,CROATIA. RP ALBER, T (reprint author), MAX PLANCK INST PHYS & ASTROPHYS,MUNICH,GERMANY. NR 29 TC 39 Z9 39 U1 0 U2 0 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 FEB 20 PY 1995 VL 74 IS 8 BP 1303 EP 1306 DI 10.1103/PhysRevLett.74.1303 PG 4 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300012 ER PT J AU FEARN, H COOK, RJ MILONNI, PW AF FEARN, H COOK, RJ MILONNI, PW TI SUDDEN REPLACEMENT OF A MIRROR BY A DETECTOR IN CAVITY QED - ARE PHOTONS COUNTED IMMEDIATELY SO PHYSICAL REVIEW LETTERS LA English DT Article C1 USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840. LOS ALAMOS NATL LAB,DIV THEORET T4,LOS ALAMOS,NM 87545. RP FEARN, H (reprint author), CALIF STATE UNIV FULLERTON,DEPT PHYS,FULLERTON,CA 92634, USA. NR 8 TC 17 Z9 17 U1 1 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 20 PY 1995 VL 74 IS 8 BP 1327 EP 1330 DI 10.1103/PhysRevLett.74.1327 PG 4 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300018 ER PT J AU ZHANG, BL WANG, CZ HO, KM TURNER, D YE, YY AF ZHANG, BL WANG, CZ HO, KM TURNER, D YE, YY TI ANOMALOUS PHONON BEHAVIOR AND PHASE FLUCTUATIONS IN BCE ZR SO PHYSICAL REVIEW LETTERS LA English DT Article ID MOLECULAR-DYNAMICS; TRANSITION-METALS; LATTICE-DYNAMICS; SELF-DIFFUSION; OMEGA-PHASE; NB ALLOYS; DISPERSION; ZIRCONIUM; HCP; MODEL C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. RP ZHANG, BL (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. NR 33 TC 27 Z9 27 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 FEB 20 PY 1995 VL 74 IS 8 BP 1375 EP 1378 DI 10.1103/PhysRevLett.74.1375 PG 4 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300030 ER PT J AU FORTNER, J SABOUNGI, ML ENDERBY, JE AF FORTNER, J SABOUNGI, ML ENDERBY, JE TI CARRIER DENSITY ENHANCEMENT IN SEMICONDUCTING NASN AND CSPB SO PHYSICAL REVIEW LETTERS LA English DT Article ID LEAD ALLOYS; PB ALLOYS; LIQUID; RESISTIVITY; TRANSITION C1 UNIV BRISTOL,DEPT PHYS,BRISTOL,AVON,ENGLAND. RP FORTNER, J (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Saboungi, Marie-Louise/C-5920-2013 OI Saboungi, Marie-Louise/0000-0002-0607-4815 NR 18 TC 22 Z9 22 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 FEB 20 PY 1995 VL 74 IS 8 BP 1415 EP 1418 DI 10.1103/PhysRevLett.74.1415 PG 4 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300040 ER PT J AU SEIDLER, GT ROSENBAUM, TF BEAUCHAMP, KM JAEGER, HM CRABTREE, GW WELP, U VINOKUR, VM AF SEIDLER, GT ROSENBAUM, TF BEAUCHAMP, KM JAEGER, HM CRABTREE, GW WELP, U VINOKUR, VM TI LOW-TEMPERATURE ACTION IN YBA2CU3O7-DELTA SO PHYSICAL REVIEW LETTERS LA English DT Article ID MAGNETIC-RELAXATION; VORTICES; SUPERCONDUCTORS; FIELD C1 UNIV CHICAGO,JAMES FRANCK INST,CHICAGO,IL 60637. UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP SEIDLER, GT (reprint author), NEC RES INST,4 INDEPENDENCE WAY,PRINCETON,NJ 08540, USA. RI Seidler, Gerald/I-6974-2012 NR 15 TC 21 Z9 21 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 FEB 20 PY 1995 VL 74 IS 8 BP 1442 EP 1445 DI 10.1103/PhysRevLett.74.1442 PG 4 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300047 ER PT J AU OSEROFF, SB CHEONG, SW AKTAS, B HUNDLEY, MF FISK, Z RUPP, LW AF OSEROFF, SB CHEONG, SW AKTAS, B HUNDLEY, MF FISK, Z RUPP, LW TI SPIN-PEIERLS STATE VERSUS NEEL STATE IN DOPED CUGEO3 SO PHYSICAL REVIEW LETTERS LA English DT Article ID TRANSITION; SUPERCONDUCTIVITY; MODEL C1 AT&T BELL LABS,MURRAY HILL,NJ 07974. UNIV CALIF SAN DIEGO,SAN DIEGO,CA 92093. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP OSEROFF, SB (reprint author), SAN DIEGO STATE UNIV,SAN DIEGO,CA 92182, USA. NR 32 TC 189 Z9 189 U1 2 U2 11 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 FEB 20 PY 1995 VL 74 IS 8 BP 1450 EP 1453 DI 10.1103/PhysRevLett.74.1450 PG 4 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300049 ER PT J AU ERBER, T HOCKNEY, GM AF ERBER, T HOCKNEY, GM TI METHOD OF CONSTRAINED GLOBAL OPTIMIZATION - COMMENT SO PHYSICAL REVIEW LETTERS LA English DT Note C1 IIT,DEPT MATH,CHICAGO,IL 60616. FERMILAB NATL ACCELERATOR LAB,DEPT THEORET PHYS,BATAVIA,IL 60510. RP ERBER, T (reprint author), IIT,DEPT PHYS,CHICAGO,IL 60616, USA. NR 2 TC 49 Z9 49 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 FEB 20 PY 1995 VL 74 IS 8 BP 1482 EP 1482 DI 10.1103/PhysRevLett.74.1482 PG 1 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300057 ER PT J AU ALTSCHULER, EL WILLIAMS, TJ RATNER, ER DOWLA, F WOOTEN, F AF ALTSCHULER, EL WILLIAMS, TJ RATNER, ER DOWLA, F WOOTEN, F TI METHOD OF CONSTRAINED GLOBAL OPTIMIZATION - REPLY SO PHYSICAL REVIEW LETTERS LA English DT Note C1 STANFORD UNIV,DEPT APPL PHYS,STANFORD,CA 94305. RP ALTSCHULER, EL (reprint author), LAWRENCE LIVERMORE NATL LAB,DEPT APPL SCI,POB 808,LIVERMORE,CA 94551, USA. NR 2 TC 12 Z9 12 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 FEB 20 PY 1995 VL 74 IS 8 BP 1483 EP 1483 DI 10.1103/PhysRevLett.74.1483 PG 1 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300058 ER PT J AU ASAKAWA, M AF ASAKAWA, M TI TRANSVERSE-MASS M-PERPENDICULAR-TO DEPENDENCE OF DILEPTON EMISSION FROM PREEQUILIBRIUM AND QUARK-GLUON PLASMA IN HIGH-ENERGY NUCLEUS-NUCLEUS COLLISIONS - COMMENT SO PHYSICAL REVIEW LETTERS LA English DT Note ID HEAVY-ION COLLISIONS; RADIATION; PARTONS RP ASAKAWA, M (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 7 TC 1 Z9 1 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 20 PY 1995 VL 74 IS 8 BP 1486 EP 1486 DI 10.1103/PhysRevLett.74.1486 PG 1 WC Physics, Multidisciplinary SC Physics GA QH293 UT WOS:A1995QH29300061 ER PT J AU RAMSHAW, JD AF RAMSHAW, JD TI THERMODYNAMIC STABILITY CONDITIONS FOR THE TSALLIS AND RENYI ENTROPIES SO PHYSICS LETTERS A LA English DT Article ID GENERALIZED STATISTICAL-MECHANICS; SYSTEM; HEAT AB Thermodynamic stability conditions (TSCs) are derived for the Tsallis and Renyi entropies. These entropies are monotononically increasing functions of each other, so their TSCs are completely equivalent although different in appearance. The TSC for the Renyi entropy S(q)R is simply that S(q)R be a concave (convex) function of the mean energy E for q > 0 (q < 0). This condition is not in general satisfied. The TSC for the Tsallis entropy S(q)T is then an immediate consequence of the nonlinear functional relation between S(q)T and S(q)R. Due to the nonlinearity, the resulting TSC for S(q)T is not simply related to the concavity (convexity) of S(q)T. The concavity properties of S(q)T are therefore not sufficient to guarantee thermodynamic stability. RP RAMSHAW, JD (reprint author), IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 21 TC 36 Z9 37 U1 0 U2 3 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 FEB 20 PY 1995 VL 198 IS 2 BP 119 EP 121 DI 10.1016/0375-9601(95)00035-2 PG 3 WC Physics, Multidisciplinary SC Physics GA QH103 UT WOS:A1995QH10300010 ER PT J AU RAMSHAW, JD AF RAMSHAW, JD TI ENTROPY AMBIGUITY IN A SYSTEM IN EQUILIBRIUM WITH A FINITE HEAT BATH SO PHYSICS LETTERS A LA English DT Article AB Plastino and Plastino [Phys. Lett. A 193 (1994) 140] have recently shown that the probability distribution for a system in equilibrium with a finite heat bath having a power-law density of states is given by the generalized canonical distribution of Tsallis [J. Stat. Phys. 52 (1988) 479]. Here we show that the entropy S of such a system is however ambiguous, and is not uniquely given by the Tsallis entropy (or its additive equivalent the Renyi entropy). The ambiguity is due to the fact that the extension of the Boltzmann formula S = ln W to nonuniform probability distributions requires an additional postulate, which in the present context may be taken to be the definition of the entropy of the finite heat bath. Two reasonable alternative definitions D1 and D2 lead to the conventional Boltzmann-Gibbs-Shannon entropy and the Renyi entropy, respectively. Since the Tsallis distribution maximizes the Renyi entropy, definition D2 preserves the entropy maximum principle, whereas D1 does not. The distinction between D1 and D2 vanishes for large heat baths, while small baths exhibit thermodynamic pecularities such as unequal system and bath temperatures. RP RAMSHAW, JD (reprint author), IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 0 TC 11 Z9 11 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 FEB 20 PY 1995 VL 198 IS 2 BP 122 EP 125 DI 10.1016/0375-9601(95)00033-Y PG 4 WC Physics, Multidisciplinary SC Physics GA QH103 UT WOS:A1995QH10300011 ER PT J AU PERKINS, LS DEPRISTO, AE AF PERKINS, LS DEPRISTO, AE TI THE INFLUENCE OF LATTICE DISTORTION ON ATOMIC SELF-DIFFUSION ON FCC(001) SURFACES - NI, CU, PD, AG SO SURFACE SCIENCE LA English DT Article DE ADATOMS; COPPER; DIFFUSION AND MIGRATION; LOW INDEX SINGLE CRYSTAL SURFACES; NICKEL; PALLADIUM; SEMIEMPIRICAL MODELS AND MODEL CALCULATIONS; SILVER; SURFACE DIFFUSION ID CORRECTED EFFECTIVE-MEDIUM; SINGLE ADATOMS; REACTION-PATH; CU(100); SYSTEMS AB We present the variation of the activation barriers with the number of movable substrate atoms for the self-migration of adatoms on fee (001) surfaces. Two mechanisms considered in this paper are: (1) hopping of the adatom from one four-fold hollow site to an adjacent four-fold hollow site via a two-fold bridge site; and (2) exchange of the adatom with an atom in the first surface layer. While both mechanisms distort the lattice atoms from their ideal positions, the latter process is found to lead to much greater distortions than the former. We find at least a 25% reduction in the barrier to atomic exchange as the number of substrate atoms is increased from a minimum to very large. This is shown to be due to sharing of the lattice distortion over many substrate atoms, thereby reducing the distortion of each atom significantly. Nevertheless, the explicit inclusion of the kinetic-exchange-correlation electronic energy terms in the interactions is still found to be critical in predicting the energetically favored self-diffusion mechanism on the fee (001) surface. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 20 TC 23 Z9 23 U1 1 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 FEB 20 PY 1995 VL 325 IS 1-2 BP 169 EP 176 DI 10.1016/0039-6028(94)00719-5 PG 8 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA QH409 UT WOS:A1995QH40900024 ER PT J AU LYMAN, PF QIAN, Y BEDZYK, MJ AF LYMAN, PF QIAN, Y BEDZYK, MJ TI ADSORBATE STRUCTURE AND SUBSTRATE RELAXATION FOR THE SB/SI(001)-(2X1) SURFACE SO SURFACE SCIENCE LA English DT Letter ID SCANNING TUNNELING MICROSCOPY; SI(100) SURFACE; LOW-TEMPERATURE; SB; SI(001); PHOTOEMISSION; PASSIVATION; DIFFRACTION; SI(111); DIMERS AB X-ray standing wave measurements were undertaken to study the bonding position of Sb adatoms on the Sb-saturated Si(001)-(2 x 1) surface. Using the (004) and (022) Bragg reflections, we find that the Sb atoms form dimers, and that the center of the Sb ad-dimers lies 1.64 Angstrom above the bulk-like Si(004) surface atomic plane. When combined with a previous determination of the Sb-Si and Sb-Sb bond lengths, our results show that the surface Si plane is contracted inward by 0.10 Angstrom upon saturation with Sb. Our in-plane results are compared to two structural models consisting of dimers whose bonds are parallel to the surface plane and whose centers are either shifted or unshifted (parallel to the dimer bond direction) relative to the underlying substrate planes. We thus find two special cases consistent with our data: one with symmetric (unshifted) dimers having a dimer bond length of 2.81 Angstrom, and the other with midpoint-shifted dimers, having a bond length of 2.88 Angstrom and a lateral shift of 0.21 Angstrom. C1 NORTHWESTERN UNIV,MAT RES CTR,EVANSTON,IL 60208. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP LYMAN, PF (reprint author), NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60208, USA. RI Bedzyk, Michael/B-7503-2009; Bedzyk, Michael/K-6903-2013 NR 23 TC 25 Z9 25 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD FEB 20 PY 1995 VL 325 IS 1-2 BP L385 EP L391 DI 10.1016/0039-6028(94)00812-4 PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA QH409 UT WOS:A1995QH40900002 ER PT J AU BARTLETT, JG BLANCHARD, A SILK, J TURNER, MS AF BARTLETT, JG BLANCHARD, A SILK, J TURNER, MS TI THE CASE FOR A HUBBLE CONSTANT OF 30 KM S(-1) MPC(-1) SO SCIENCE LA English DT Article ID COLD DARK-MATTER; LARGE-SCALE STRUCTURE; PRIMORDIAL NUCLEOSYNTHESIS; GALAXY CLUSTERS; REDSHIFT SURVEY; IRAS GALAXIES; UNIVERSE; HOT; ANISOTROPY; COSMOLOGY AB Although recent determinations of the distance to the Virgo cluster based on Cepheid variable stars represent an important step in pinning down the Hubble constant, after 65 years a definitive determination of the Hubble constant still eludes cosmologists. At present, most of the observational determinations place the Hubble constant between 40 and 90 kilometers per second per megaparsec (km s(-1) Mpc(-1)). The case is made here for a Hubble constant that is even smaller than the lower bound of the accepted range on the basis of the great advantages, all theoretical in nature, of a Hubble constant of around 30 kilometers per second per megaparsec. Such a value for the Hubble cures all of the ills of the current theoretical orthodoxy, that is, a spatially flat universe composed predominantly of cold dark matter. C1 UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720. FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510. UNIV CHICAGO,ENRICO FERMI INST,DEPT PHYS,CHICAGO,IL 60637. UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. RP BARTLETT, JG (reprint author), UNIV STRASBOURG 1,OBSERV ASTRON STRASBOURG,11 RUE UNIV,F-67000 STRASBOURG,FRANCE. OI silk, joe/0000-0002-1566-8148 NR 61 TC 48 Z9 48 U1 0 U2 7 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD FEB 17 PY 1995 VL 267 IS 5200 BP 980 EP 983 DI 10.1126/science.267.5200.980 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QG990 UT WOS:A1995QG99000026 PM 17811436 ER PT J AU UDOMSAK, S ANTHONY, RG LOTT, SE AF UDOMSAK, S ANTHONY, RG LOTT, SE TI SILICON-AMINE INTERCALATED TITANATES AS NOVEL SUPPORTS FOR HYDROTREATING CATALYST SO APPLIED CATALYSIS A-GENERAL LA English DT Article DE HYDRODENITROGENATION; HYDRODESULFURIZATION; HYDROGENATION; HYDROTREATING; INTERCALATION; LAYERED TITANATE; MIXED OXIDE; NICKEL-MOLYBDENUM CATALYSTS; PILLARING; SILICA; TITANATE ID ION-EXCHANGE; METAL-OXIDES; HYDRODESULFURIZATION; MOLYBDENUM; FUNCTIONALITIES; DISPERSION; SULFIDES; ALUMINA; MO AB A layered crystalline titanate (T2CT) [Anthony and Dosch, US Patent 5 177 045 (1993)] is intercalated with silicon-amine compounds, such as 3-aminopropyltrimethoxysilane and n-[3-(trimethoxysilyl)propyl] ethylenediamine. N-alkylamine is used as a secondary swelling agent to adjust the amount of silicon-amine intercalating into T2CT. Molybdenum and nickel are loaded into siliconamine intercalated T2CT by impregnation. Hydrogenation of pyrene, hydrodesulfurization of dibenzothiophene, and hydrodenitrogenation of quinoline are used to study the catalytic activity of the NiMo catalysts. The most active NiMo catalysts was activated by calcination and then sulfiding. The NiMo/pillared T2CT catalysts are more active than a commercial catalyst (Shell 324M) for hydrogenation of pyrene, while the activities of the NiMo/pillared T2CT catalysts for hydrodesulfurization and hydrodenitrogenation are similar to those of Shell 324M. The amount of silicon relative to titanium of the pillared T2CT, used as supports, has a significant effect on the catalytic activities and physical properties of the supports. C1 TEXAS A&M UNIV,DEPT CHEM ENGN,KINET CATALYSIS & REACT ENGN LAB,COLLEGE STN,TX 77843. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 40 TC 5 Z9 5 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-860X J9 APPL CATAL A-GEN JI Appl. Catal. A-Gen. PD FEB 16 PY 1995 VL 122 IS 2 BP 111 EP 124 DI 10.1016/0926-860X(94)00223-1 PG 14 WC Chemistry, Physical; Environmental Sciences SC Chemistry; Environmental Sciences & Ecology GA QK386 UT WOS:A1995QK38600003 ER PT J AU SHUL, RJ BACA, AG RIEGER, DJ HOWARD, AJ AF SHUL, RJ BACA, AG RIEGER, DJ HOWARD, AJ TI ANISOTROPIC ETCHING OF WSI FILMS ON GAAS SO ELECTRONICS LETTERS LA English DT Article DE REACTIVE ION ETCHING; GALLIUM ARSENIDE AB Anisotropic etching of tungsten silicide submicrometre features has been achieved with both electron cyclotron resonance (ECR) and reactive ion etch (RIE) systems using fluorine based plasmas. The processes are suitable for WSi Schottky gates for high-speed, high-power GaAs transistors. WSi gale sidewall profiles, etch rates, and selectivity to photoresist are evaluated las a function of DC bias. RP SANDIA NATL LABS, POB 5800, ALBUQUERQUE, NM 87185 USA. NR 6 TC 1 Z9 1 U1 0 U2 2 PU INST ENGINEERING TECHNOLOGY-IET PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND SN 0013-5194 EI 1350-911X J9 ELECTRON LETT JI Electron. Lett. PD FEB 16 PY 1995 VL 31 IS 4 BP 317 EP 318 DI 10.1049/el:19950213 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA QL564 UT WOS:A1995QL56400053 ER PT J AU CROWELL, RA HOLTOM, GR XIE, XS AF CROWELL, RA HOLTOM, GR XIE, XS TI INFRARED FREE INDUCTION DECAY OF LIQUID WATER-MOLECULES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Letter ID OPTICAL PARAMETRIC OSCILLATOR; PHOTON-ECHO; DYNAMICS; SPECTROSCOPY; SOLVATION; SURFACES; LASER AB The infrared vibrational quantum beats of monomeric liquid water molecules dissolved in deuterated methylene chloride are directly observed at room temperature by up-converting the free induction decay generated with a new femtosecond infrared optical parametric oscillator operated near 3 mu m. C1 PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, RICHLAND, WA 99352 USA. NR 30 TC 8 Z9 8 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 16 PY 1995 VL 99 IS 7 BP 1840 EP 1842 DI 10.1021/j100007a009 PG 3 WC Chemistry, Physical SC Chemistry GA QG924 UT WOS:A1995QG92400009 ER PT J AU MEBEL, AM MOROKUMA, K LIN, MC MELIUS, CF AF MEBEL, AM MOROKUMA, K LIN, MC MELIUS, CF TI POTENTIAL-ENERGY SURFACE OF THE HNO+NO REACTION - AN AB-INITIO MOLECULAR-ORBITAL STUDY SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID GAUSSIAN-1 THEORY; 2ND-ROW COMPOUNDS; CONFIGURATION; THERMOCHEMISTRY AB The potential energy surface of the HNO + NO reaction has been investigated by ah initio molecular orbital calculations at the QCISD(T)/6-311G(d,p)/UMP2/6-311G(d,p) + ZPE[UMP2/6-311G(d,p)] and Gaussian-2 (G2) levels of theory. The initial reaction step is NO association with the N atom of the HNO molecule to form the HN(O)NO intermediate, 2, overcoming the barrier 1' of 9.5 kcal/mol. The reaction proceeds further by 1,3-hydrogen migration in HN(O)NO from nitrogen to oxygen via the transition state 3, which is much more favorable than 1,2-shift. This step is shown to be rate-determining, having a barrier of 21.6 kcal/mol. After the H shift, trans,cis-HONNO ((2)A'') intermediate, 5a, is formed, which rearranges to trans,trans-HONNO ((2)A'), 7b. Finally, the latter dissociates to give the reaction products N2O + OH. The energies of the transition states for internal rearrangements of HONNO as well as the transition state for HONNO ((2)A') dissociation are calculated to be significantly lower than the rate-determining barrier for 1,3-hydrogen migration in HN(O)NO. C1 EMORY UNIV, CHERRY L EMERSON CTR SCI COMPUTAT, ATLANTA, GA 30322 USA. EMORY UNIV, DEPT CHEM, ATLANTA, GA 30322 USA. SANDIA NATL LABS, COMBUST RES FACIL, LIVERMORE, CA 94550 USA. RI Mebel, Alexander/A-5234-2009 NR 32 TC 33 Z9 34 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 16 PY 1995 VL 99 IS 7 BP 1900 EP 1908 DI 10.1021/j100007a018 PG 9 WC Chemistry, Physical SC Chemistry GA QG924 UT WOS:A1995QG92400018 ER PT J AU MAGINN, EJ BELL, AT THEODOROU, DN AF MAGINN, EJ BELL, AT THEODOROU, DN TI SORPTION THERMODYNAMICS, SITING, AND CONFORMATION OF LONG N-ALKANES IN SILICALITE AS PREDICTED BY CONFIGURATIONAL-BIAS MONTE-CARLO INTEGRATION SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID MOLECULAR-DYNAMICS SIMULATION; CATALYTIC REACTION; ADSORPTION; DIFFUSION; ZEOLITES; METHANE; FLUIDS; ZSM-5; HYDROCARBONS; EQUILIBRIA AB The low-occupancy adsorption thermodynamics of n-alkanes ranging in length from C-4 to C-25 in the zeolite silicalite is predicted from molecular simulations. A bias Monte Carlo (MC) technique is described which permits these calculations to be carried out with modest computational expense. In addition, a general, systematic coarse-graining methodology is developed which enables the location and shape of chains of arbitrary length to be accurately described using a small number of degrees of freedom. By coupling this methodology with the bias Monte Carlo technique, the free energy of sorbed chains is calculated as a function of the coarse-grained configuration of chains. The results indicate that, at high temperature, n-alkanes probe all the accessible regions of the zeolite pore network, favoring high-entropy conformations that access more than one type of channel environment. As temperature decreases to room temperature, short chains continue to populate all regions of the zeolite, while chains longer than n-octane align along the straight channels in highly localized low-energy configurations. Free energy profiles of this type are also used to gain insight into probable diffusion mechanisms for the long n-alkanes at low occupancy. Macroscopic thermodynamic results, such as Henry's law constants and isosteric heats of adsorption, are calculated and compared to experimentally obtained values. The agreement between simulation and experiment is generally good. The results presented here show that there is a strong thermodynamic driving force for adsorption at all temperatures and chain lengths studied. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. OI Theodorou, Doros/0000-0002-4763-9739; Bell, Alexis/0000-0002-5738-4645 NR 51 TC 116 Z9 117 U1 2 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 16 PY 1995 VL 99 IS 7 BP 2057 EP 2079 DI 10.1021/j100007a042 PG 23 WC Chemistry, Physical SC Chemistry GA QG924 UT WOS:A1995QG92400042 ER PT J AU HO, P MELIUS, CF AF HO, P MELIUS, CF TI THEORETICAL-STUDY OF THE THERMOCHEMISTRY OF MOLECULES IN THE SI-O-H-C SYSTEM SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID CHEMICAL VAPOR-DEPOSITION; ORGANO-SILICON COMPOUNDS; ORBITAL METHODS; GAS-PHASE; HEATS; TETRAETHOXYSILANE; DECOMPOSITION; CHEMISTRY; ENERGY; MODEL AB A self-consistent set of thermochemical parameters for more than 30 molecules in the Si-O-H-C system are obtained from a combination of ab initio electronic structure calculations and empirical corrections. Heats of formation are estimated for another 15 species. The species are primarily methoxy- and ethoxysilicon compounds, including both stable and radical species as well as a few transition states. In the few cases where comparisons with experimental data in the literature are possible, there is good agreement with the calculated values. The energetics of Si(OC2H5)(4) (TEOS) decomposition reactions show that it is likely to decompose via the four-center elimination of ethylene while Si(OCH3)(4) decomposes via different reactions. This thermochemical and kinetic information will advance the modeling of the chemical vapor deposition of silicon oxide films from Si(OC2H5)(4). C1 SANDIA NATL LABS, LIVERMORE, CA 94551 USA. RP HO, P (reprint author), SANDIA NATL LABS, POB 5800, ALBUQUERQUE, NM 87185 USA. NR 49 TC 72 Z9 72 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 16 PY 1995 VL 99 IS 7 BP 2166 EP 2176 DI 10.1021/j100007a056 PG 11 WC Chemistry, Physical SC Chemistry GA QG924 UT WOS:A1995QG92400056 ER PT J AU GARCIA, JG ENAS, JD VANBROCKLIN, HF FRONCZEK, FR AF GARCIA, JG ENAS, JD VANBROCKLIN, HF FRONCZEK, FR TI 5-FLUORO-1-INDANONE AND 2,2-DIMETHYL-5-FLUORO-1-INDANONE SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Article ID PHASE AB There are two independent molecules in the asymmetric unit of 5-fluoro-1-indanone (1), C9H7FO. The cyclopentene ring is planar in one of the molecules and slightly distorted into an envelope conformation in the other, with the CH2 group adjacent to the carbonyl group lying 0.033 (2) angstrom out of the best plane of the other four atoms. The maximum deviation from coplanarity of all the non-H atoms of (1) is 0.038 (2) angstrom for one molecule and 0.019 (2) angstrom for the other. The two molecules are nearly parallel in the crystal, their best planes forming a dihedral angle of 4.1 (3)-degrees. 2,2-Dimethyl-5-fluoro-1-indanone (2), C11H11FO, lies on a mirror plane in the crystal. Molecules of both (1) and (2) pack in hypercentric arrays. The C-F distances are 1.354 (2) and 1.360 (3) angstrom for (1) and 1.355 (2) angstrom for (2). The C=O distances are 1.218 (2) and 1.212 (3) angstrom for (1) and 1.220 (2) angstrom for (2). C1 LOUISIANA STATE UNIV,DEPT CHEM,BATON ROUGE,LA 70803. RP GARCIA, JG (reprint author), LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 14 TC 2 Z9 2 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-2701 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Cryst. Struct. Commun. PD FEB 15 PY 1995 VL 51 BP 301 EP 304 DI 10.1107/S0108270194005329 PN 2 PG 4 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA QJ450 UT WOS:A1995QJ45000056 ER PT J AU MATTHEWS, DC APPELBAUM, FR EARY, JF FISHER, DR DURACK, LD BUSH, SA HUI, TE MARTIN, PJ MITCHELL, D PRESS, OW BADGER, CC STORB, R NELP, WB BERNSTEIN, ID AF MATTHEWS, DC APPELBAUM, FR EARY, JF FISHER, DR DURACK, LD BUSH, SA HUI, TE MARTIN, PJ MITCHELL, D PRESS, OW BADGER, CC STORB, R NELP, WB BERNSTEIN, ID TI DEVELOPMENT OF A MARROW TRANSPLANT REGIMEN FOR ACUTE-LEUKEMIA USING TARGETED HEMATOPOIETIC IRRADIATION DELIVERED BY I-131-LABELED ANTI-CD45 ANTIBODY, COMBINED WITH CYCLOPHOSPHAMIDE AND TOTAL-BODY IRRADIATION SO BLOOD LA English DT Article ID B-CELL LYMPHOMA; RADIOLABELED MONOCLONAL-ANTIBODIES; ACUTE MYELOGENOUS LEUKEMIA; NON-HODGKINS-LYMPHOMA; MYELOID-LEUKEMIA; RANDOMIZED TRIAL; RADIOIMMUNOTHERAPY; DOSIMETRY; THERAPY; PHASE AB In an attempt to decrease the relapse rate after bone marrow transplantation (BMT) for advanced acute leukemia, we initiated studies using (131)-labeled anti-CD45 antibody (BC8) to deliver radiation specifically to hematopoietic tissues, followed by a standard transplant preparative regimen. Biodistribution studies were performed in 23 patients using 0.5 mg/kg trace I-131-labeled BC8 antibody. The BC8 antibody was cleared rapidly from plasma with an initial disappearance half-time of 1.5 +/- 0.2 hours, presumably reflecting rapid antigen-specific binding. The mean radiation absorbed doses (cGy/mCi I-131 administered) were as follows: marrow, 7.1 +/- 0.8; spleen, 10.8 +/- 1.4; liver, 2.7 +/- 0.2; lungs, 2.1 +/- 0.1; kidneys, 0.7 +/- 0.1; and total body, 0.4 +/- 0.03. Patients with acute myelogenous leukemia (AML) in relapse had a higher marrow dose (11.4 cGy/mCi) than those in remission (5.2 cGy/mCi; P = .001) because of higher uptake and longer retention of radionuclide in marrow, Twenty patients were treated with a dose of I-131 estimated to deliver 3.5 Gy (level 1) to 7 Gy (level 3) to liver, with marrow doses of 4 to 30 Gy and spleen doses of 7 to 60 Gy, followed by 120 mg/kg cyclophosphamide (CY) and 12 Gy total body irradiation (TBI). Nine of 13 patients with AML or refractory anemia with excess blasts (RAEB) and two of seven with acute lymphocytic leukemia (ALL) are alive disease-free at 8 to 41 months (median, 17 months) after BMT, Toxicity has not been measurably greater than that of CY/TBI alone, and the maximum tolerated dose has not been reached. This study demonstrates that with the use of (131)-BC8 substantially greater doses of radiation can be delivered to hematopoietic tissues as compared with liver, lung, or kidney, which may improve the efficacy of marrow transplantation. (C) 1995 by The American Society of Hematology. C1 UNIV WASHINGTON, DEPT PEDIAT, SEATTLE, WA USA. UNIV WASHINGTON, DEPT MED, SEATTLE, WA USA. UNIV WASHINGTON, DEPT RADIOL, SEATTLE, WA USA. PACIFIC NW LAB, RICHLAND, WA USA. RP MATTHEWS, DC (reprint author), FRED HUTCHINSON CANC RES CTR, DIV CLIN RES, 1124 COLUMBIA ST, M387, SEATTLE, WA 98104 USA. FU NCI NIH HHS [CA18029, CA44991, CA47748] NR 42 TC 115 Z9 118 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD FEB 15 PY 1995 VL 85 IS 4 BP 1122 EP 1131 PG 10 WC Hematology SC Hematology GA QG993 UT WOS:A1995QG99300031 PM 7849300 ER PT J AU HEULETT, ST WEEKS, SC MEFFE, GK AF HEULETT, ST WEEKS, SC MEFFE, GK TI LIPID DYNAMICS AND GROWTH RELATIVE TO RESOURCE LEVEL IN JUVENILE EASTERN MOSQUITOFISH (GAMBUSIA-HOLBROOKI, POECILIIDAE) SO COPEIA LA English DT Article ID LIFE-HISTORY TRAITS; OFFSPRING SIZE; PHENOTYPIC PLASTICITY; STORAGE; LARVAE; EGGS; FISH AB We examined early energy allocation patterns of eastern mosquitofish (Gambusia holbrooki) reared on three dietary regimes by measuring growth and lipid storage at several points during the first 40 days of life. A high food treatment produced growth increments similar to those previously found in natural mosquitofish populations, whereas intermediate (one-half the quantity of high) and low (one-quarter the quantity of high) food treatments produced significantly lower growth increments. Lipid content was about 20% of dry mass at birth and declined for the first five days of life in all three treatments. After this initial period of lipid use, lipid levels increased asymptotically in all treatments. Lipid content was positively correlated with feeding level and plateaued at significantly different levels for each treatment. These three laboratory-reared groups had significantly higher percent somatic lipids than two populations of wild fish of similar size, probably because of differences in food and activity levels between laboratory and field environments, Size at birth was positively correlated with size at two weeks of age but was not significantly correlated with size beyond 15 days of age. Birth size was uncorrelated with subsequent growth or lipid content. No trade-offs between growth and lipid storage were found at any level examined in this study. We suggest that differences in energy acquisition or metabolic efficiency may swamp differences in resource allocation between these two energy compartments. C1 UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. DUKE UNIV,DEPT BIOL ANTHROPOL & ANAT,DURHAM,NC 27706. NR 36 TC 25 Z9 28 U1 1 U2 8 PU AMER SOC ICHTHYOLOGISTS HERPETOLOGISTS BUSINESS OFFICE PI CARBONDALE PA SOUTHERN ILLINOIS UNIV, DEPT ZOOLOGY, CARBONDALE, IL 62901-6501 SN 0045-8511 J9 COPEIA JI Copeia PD FEB 15 PY 1995 IS 1 BP 97 EP 104 PG 8 WC Zoology SC Zoology GA QH372 UT WOS:A1995QH37200010 ER PT J AU PASKO, VP INAN, US TARANENKO, YN BELL, TF AF PASKO, VP INAN, US TARANENKO, YN BELL, TF TI HEATING, IONIZATION AND UPWARD DISCHARGES IN THE MESOSPHERE DUE TO INTENSE QUASI-ELECTROSTATIC THUNDERCLOUD FIELDS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID ELECTRICAL MEASUREMENTS; IONOSPHERE; THUNDERSTORMS AB Quasi-electrostatic (QE) fields that temporarily exist at high altitudes following the sudden removal (e.g., by a lightning discharge) of thundercloud charge at low altitudes are found to significantly heat mesospheric electrons and produce ionization and light. The intensity, spatial extent, duration and spectra of optical emissions produced are consistent with the observed features of the Red Sprite type of upward discharges. C1 LOS ALAMOS NATL LAB,NIS 1,MS D466,LOS ALAMOS,NM 87545. RP PASKO, VP (reprint author), STANFORD UNIV,STAR LAB,STANFORD,CA 94305, USA. RI Pasko, Victor/S-6024-2016 NR 19 TC 153 Z9 158 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD FEB 15 PY 1995 VL 22 IS 4 BP 365 EP 368 DI 10.1029/95GL00008 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QJ265 UT WOS:A1995QJ26500011 ER PT J AU CHAPMAN, EG KENNY, DV BUSNESS, KM THORP, JM SPICER, CW AF CHAPMAN, EG KENNY, DV BUSNESS, KM THORP, JM SPICER, CW TI CONTINUOUS AIRBORNE MEASUREMENTS OF GASEOUS FORMIC AND ACETIC-ACIDS OVER THE WESTERN NORTH-ATLANTIC SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID TROPOSPHERE; PHOTOCHEMISTRY; SEASON AB A tandem mass spectrometer modified for aircraft applications was used to measure gas-phase formic and acetic acid mixing ratios over the western North Atlantic during late summer 1992. The sensitive, specific, and essentially real-time measurements provided by the mass spectrometer allow a true spatial evaluation of these compounds in the study area. Formic and acetic acid mixing ratios showed substantial vertical variation, varying by factors of up to 13 and 6, respectively, within 2-km profiles extending from the boundary layer into the free troposphere. Substantial horizontal variation was also observed at constant altitudes within both the boundary layer and free troposphere. Mixing ratios of the two acids were correlated (r2 > 0.70) throughout the study region. C1 BATTELLE MEM INST, COLUMBUS, OH 43201 USA. RP CHAPMAN, EG (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. RI Chapman, Elaine/K-8756-2012 NR 18 TC 17 Z9 17 U1 1 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD FEB 15 PY 1995 VL 22 IS 4 BP 405 EP 408 DI 10.1029/94GL03023 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QJ265 UT WOS:A1995QJ26500021 ER PT J AU ROBERTS, JJ DUBA, AG AF ROBERTS, JJ DUBA, AG TI TRANSIENT ELECTRICAL RESPONSE OF SAN QUINTIN-DUNITE AS A FUNCTION OF OXYGEN FUGACITY CHANGES - INFORMATION ABOUT CHARGE-CARRIERS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID OLIVINE; CONDUCTIVITY; DIFFUSION AB The electrical conductivity (sigma) of San Quintin dunite (SQD) measured between 950 and 1150-degrees-C at controlled oxygen fugacity (f(O2)) within the olivine stability field shows transients in response to changes in f(O2). Such behavior has not been reported previously for measurements made under similar conditions on either olivine single crystals or polycrystalline samples (dunites and lherzolites) in which olivine is the major phase. In general for olivine, and increase in f(O2) results in an increase in sigma. The transient is manifested as a change in sigma from a stable equilibrium value at a specific f(02) to a quickly established subsequent value, the direction of which is opposite that of the final value that will be attained for the f(O2) change. This transient may be caused by a changing population of electrons produced by oxygen vacancies, the grain boundaries, or a short-lived defect. We postulate that the transient is observed in this particular dunite because of its large surface area to volume ratio. The transient is more pronounced at relatively high f(O2)S and temperatures between 950 and 1100-degrees-C. At relatively low f(O2)S and temperatures higher than 1100-degrees-C, the effect is diminished. The Seebeck coefficient (S), at 1200-degrees-C, is slightly smaller than that reported for single-crystal olivine, and at 1100-degrees-C is similar to that reported for single crystal olivine. RP ROBERTS, JJ (reprint author), LAWRENCE LIVERMORE NATL LAB, POB 808, L-201, LIVERMORE, CA 94551 USA. NR 14 TC 12 Z9 12 U1 2 U2 6 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 FEB 15 PY 1995 VL 22 IS 4 BP 453 EP 456 DI 10.1029/94GL03347 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QJ265 UT WOS:A1995QJ26500033 ER PT J AU STECK, LK AF STECK, LK TI SIMULATED ANNEALING INVERSION OF TELESEISMIC P-WAVE SLOWNESS AND AZIMUTH FOR CRUSTAL VELOCITY STRUCTURE AT LONG VALLEY CALDERA SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID TOMOGRAPHY; CALIFORNIA; TIMES AB Simulated annealing, a non-linear global search algorithm, is used to invert teleseismic P-wave slowness and azimuth data for crustal velocity structure. Synthetic tests show that simulated annealing is able to locate low P-wave velocity zones with reasonable accuracy in space, and recovers almost 70% of the target velocity perturbations. Testing suggests that significant results can be obtained with as few as two stations. Inversion of ray direction data from Long Valley caldera finds an asymmetrical low velocity zone beneath the resurgent dome at 8km depth, having a perturbation of -25% from the background. This zone extends to the east and south to depths of at least 24km, with a perturbation of about -10%. These features generally agree with previous results from teleseismic travel-time inversion and forward modeling of ray direction, and are probably associated with the residual Long Valley caldera magma chamber. RP STECK, LK (reprint author), LOS ALAMOS NATL LAB,MS-D443,LOS ALAMOS,NM 87545, USA. NR 19 TC 10 Z9 12 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD FEB 15 PY 1995 VL 22 IS 4 BP 497 EP 500 DI 10.1029/94GL03050 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QJ265 UT WOS:A1995QJ26500044 ER PT J AU LUTTER, WJ ROBERTS, PM THURBER, CH STECK, L FEHLER, MC STAFFORD, DG BALDRIDGE, WS ZEICHERT, TA AF LUTTER, WJ ROBERTS, PM THURBER, CH STECK, L FEHLER, MC STAFFORD, DG BALDRIDGE, WS ZEICHERT, TA TI TELESEISMIC P-WAVE IMAGE OF CRUST AND UPPER-MANTLE STRUCTURE BENEATH THE VALLES-CALDERA, NEW-MEXICO - INITIAL RESULTS FROM THE 1993 JTEX PASSIVE ARRAY SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID VELOCITY STRUCTURE; VOLCANIC FIELD; INVERSION AB Teleseismic P-wave relative arrival-time data, collected from a temporary array during the 1993 Jemez Tomography Experiment (JTEX), have been inverted to image velocity anomalies beneath the Valles caldera in northern New Mexico. Instruments were deployed in two 30-km-long profiles, one of 8 and one of 9 stations. These profiles crossed the caldera trending at azimuths of N46-degrees-W and N60-degrees-E, respectively. Two-dimensional teleseismic relative arrival time inversion of the 1993 data set, supplemented with data from an overlapping 1987 profile, confirms the existence of a mid-crustal low velocity region (-30%) beneath the Valles caldera in the depth range of 8 to 13 km (below sea level), with about a 6 km horizontal extent. This feature is interpreted to be the seismic expression of the remnant magma chamber. A shallow low velocity anomaly beneath San Antonio Mountain coincides with the region of highest thermal gradient values in the caldera. A lower crust/upper mantle low velocity anomaly is imaged but is not as well constrained due to the limited length of the profile. We tentatively correlate this anomaly with the thermal effects of basaltic magmas ponded at the crust-mantle boundary. C1 LOS ALAMOS NATL LAB,GEOENGN GRP,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,GEOL & GEOCHEM GRP,LOS ALAMOS,NM 87545. RP LUTTER, WJ (reprint author), UNIV WISCONSIN,DEPT GEOL & GEOPHYS,1215 W DAYTON ST,MADISON,WI 53706, USA. NR 21 TC 19 Z9 19 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD FEB 15 PY 1995 VL 22 IS 4 BP 505 EP 508 DI 10.1029/94GL03220 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QJ265 UT WOS:A1995QJ26500046 ER PT J AU APPELMAN, EH GOSZTOLA, DJ AF APPELMAN, EH GOSZTOLA, DJ TI AQUEOUS PEROXYNITRIC ACID (HOONO2) - A NOVEL SYNTHESIS AND SOME CHEMICAL AND SPECTROSCOPIC PROPERTIES SO INORGANIC CHEMISTRY LA English DT Article ID PERNITRIC ACID; HALOGEN NITRATES; HO2NO2; SPECTRA; DECOMPOSITION; STATE; BAND AB Peroxynitric acid, HOONO2, can be prepared in aqueous solution by the reaction of nitrous acid with a greater-than-2-fold excess of hydrogen peroxide at or below 0 degrees C. Under optimum conditions, concentrations in excess of 1.5 M can be obtained. In acid solution at room temperature, the compound has a ca. 30 min half-life for decomposition; in alkaline solution, decomposition is very rapid, yielding nitrite ion and oxygen. The aqueous acid is a potent oxidizing agent, reacting rapidly with I-, Br-, Cl-, N-3(-), and VO2+. Raman, UV, and N-15 NMR spectra of the aqueous acid have been obtained. The Raman spectra reveal three new fundamental vibrations of the peroxynitric acid molecule, leaving only two that have yet to be positively identified. The UV spectrum shows a monotonic rise in absorbance between 290 and 230 Mn; the N-15 NMR resonance has a chemical shift of -28.3 ppm relative to dilute nitric acid. RP APPELMAN, EH (reprint author), ARGONNE NATL LAB,DIV CHEM,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Gosztola, David/D-9320-2011 OI Gosztola, David/0000-0003-2674-1379 NR 29 TC 44 Z9 44 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD FEB 15 PY 1995 VL 34 IS 4 BP 787 EP 791 DI 10.1021/ic00108a007 PG 5 WC Chemistry, Inorganic & Nuclear SC Chemistry GA QH136 UT WOS:A1995QH13600007 ER PT J AU SOFO, JO AF SOFO, JO TI THERMOELECTRIC FIGURE OF MERIT OF N-HG1-XCDXSE SO JOURNAL OF APPLIED PHYSICS LA English DT Article C1 UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. RP SOFO, JO (reprint author), OAK RIDGE NATL LAB,DIV SOLID STATE,POB 2008,OAK RIDGE,TN 37831, USA. RI Sofo, Jorge/J-4415-2012; Sofo, Jorge/B-4344-2014 OI Sofo, Jorge/0000-0003-4513-3694; Sofo, Jorge/0000-0003-4513-3694 NR 13 TC 3 Z9 3 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD FEB 15 PY 1995 VL 77 IS 4 BP 1561 EP 1563 DI 10.1063/1.358907 PG 3 WC Physics, Applied SC Physics GA QG500 UT WOS:A1995QG50000030 ER PT J AU FAN, JW LOU, L WANG, LS AF FAN, JW LOU, L WANG, LS TI FECN- AND FECNH- (N=3,4) - A PHOTOELECTRON SPECTROSCOPIC AND DENSITY-FUNCTIONAL STUDY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID POLYATOMIC-MOLECULES; CARBON NANOTUBES; IRON; CLUSTERS; IONS; SPECTROMETER C1 PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, RICHLAND, WA 99352 USA. RICE UNIV, RICE QUANTUM INST, HOUSTON, TX 77251 USA. RICE UNIV, DEPT CHEM, HOUSTON, TX 77251 USA. RICE UNIV, DEPT PHYS, HOUSTON, TX 77251 USA. WASHINGTON STATE UNIV, DEPT PHYS, RICHLAND, WA 99352 USA. NR 29 TC 40 Z9 40 U1 1 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 15 PY 1995 VL 102 IS 7 BP 2701 EP 2707 DI 10.1063/1.468646 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QF821 UT WOS:A1995QF82100004 ER PT J AU BUNTINE, MA CHANDLER, DW HAYDEN, CC AF BUNTINE, MA CHANDLER, DW HAYDEN, CC TI DETECTION OF VIBRATIONAL-OVERTONE EXCITATION IN WATER VIA LASER-INDUCED GRATING SPECTROSCOPY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MEDIATED PHOTODISSOCIATION; MOLECULAR-CRYSTALS; EXCITED-STATE; DYNAMICS; WAVES; BOND; HOD C1 SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94550. STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305. RI Buntine, Mark/B-6878-2009 OI Buntine, Mark/0000-0003-0525-2795 NR 32 TC 30 Z9 30 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 15 PY 1995 VL 102 IS 7 BP 2718 EP 2726 DI 10.1063/1.468648 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QF821 UT WOS:A1995QF82100006 ER PT J AU SCHUMACHER, G BIRTCHER, RC AF SCHUMACHER, G BIRTCHER, RC TI EFFECT OF PHOSPHORUS-CONTENT ON THE RELATIVE PROPORTIONS OF CRYSTALLINE AND AMORPHOUS PHASES IN ELECTROLESS NIP DEPOSITS - COMMENT SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article RP SCHUMACHER, G (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 4 TC 2 Z9 2 U1 1 U2 5 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0261-8028 J9 J MATER SCI LETT JI J. Mater. Sci. Lett. PD FEB 15 PY 1995 VL 14 IS 4 BP 247 EP 248 DI 10.1007/BF00275612 PG 2 WC Materials Science, Multidisciplinary SC Materials Science GA QN517 UT WOS:A1995QN51700007 ER PT J AU DABESTANI, R ELLIS, KJ SIGMAN, ME AF DABESTANI, R ELLIS, KJ SIGMAN, ME TI PHOTODECOMPOSITION OF ANTHRACENE ON DRY SURFACES - PRODUCTS AND MECHANISM SO JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY LA English DT Article DE PHOTODECOMPOSITION; ANTHRACENE; DIMERIZATION; SINGLET EXCIMER ID PHOTOPHYSICAL PROPERTIES; SILICA-GEL; PHOTOCHEMISTRY; SIO2; ZEOLITES AB The photochemistry of anthracene (1) was studied on dry surfaces of silica, Cab-O-Sil (fumed silica) and alumina (neutral) at low coverages (less than 11% of a monolayer). The adsorption of 1 onto these surfaces from cyclohexane obeys a Freundlich adsorption isotherm, demonstrating a distribution of adsorption sites for interactions between 1 and the surface. Photolysis of 1 (lambda(ex) = 350 nm) adsorbed on silica, Cab-O-Sil or alumina, under deaerated conditions, proceeds slowly to give the anthracene-9,10-photodimer (2) as the only product. Diffuse reflectance and fluorescence spectroscopy show that a novel process, involving the formation of a stable ground state pair between two molecules of I takes place on all three surfaces at coverages of more than 1% of a monolayer. We propose a dimerization mechanism involving a singlet excimer formed from the stable ground state pairs. Photolysis at the solid-air interface, on the other hand, is considerably faster and proceeds to give 2 and photo-oxidation products of 1. The primary oxidation product is anthracene-9,10-endoperoxide (3) which undergoes thermal decomposition on the surface to give 9,10-anthraquinone (4), 9,10-dihydro-9,10-dihydroxyanthracene (5), bianthronyl (6), 9-bydroxyanthrone (7) and 10,10'-dihydroxy-9,9',10,10'-tetrahydro-9,9'-bianthryl (8) as the secondary products. Photo-oxidation is mediated by the addition of singlet molecular oxygen to ground state 1. RP DABESTANI, R (reprint author), OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,POB 2008,OAK RIDGE,TN 37831, USA. NR 26 TC 71 Z9 72 U1 1 U2 10 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 1010-6030 J9 J PHOTOCH PHOTOBIO A JI J. Photochem. Photobiol. A-Chem. PD FEB 15 PY 1995 VL 86 IS 1-3 BP 231 EP 239 PG 9 WC Chemistry, Physical SC Chemistry GA QH682 UT WOS:A1995QH68200030 ER PT J AU XU, W CHEN, G PETERSON, JR AF XU, W CHEN, G PETERSON, JR TI BLUE UP-CONVERSION EMISSION FROM A PBF2/GEO2/WO3 CLASS DOPED WITH TM3+ OR TM3+/TB3+ IONS SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article ID EFFICIENT FREQUENCY UPCONVERSION; THORIUM FLUORIDE GLASS; ENERGY-TRANSFER; FLUOROZIRCONATE FIBER; VISIBLE CONVERSION; YB-3+ IONS; LUMINESCENCE; EXCITATION; TM-3+ AB The blue up-conversion emission properties from Tm3+ ions doped into a PbF2/GeO2/WO3 heavy-metal fluoride glass upon 15,456 cm(-1) laser line excitation have been studied. In some cases both Tm3+ and Tb3+ ions were codoped into the same glass sample. Two blue emission bands, centered at 22,173 cm(-1) for the D-1(2) --> H-3(4) Tm3+ transition and at 20,833 cm(-1) for the (1)G(4) --> H-3(6) Tm3+ transition, have been observed. The up-conversion emission follows a two-photon absorption process for both bands. Compared to Tm3+ ion doping alone, codoping with Tb3+ ions increases the 22,173 cm(-1) emission and decreases the 20,833 cm(-1) emission. These results are due to the energy transfer between Tm3+ and Tb3+ ions. A simple rate-equation model has been used to describe this energy transfer process. (C) 1995 Academic Press, Inc. C1 UNIV TENNESSEE, DEPT CHEM, KNOXVILLE, TN 37996 USA. OAK RIDGE NATL LAB, DIV CHEM & ANALYT SCI, TRANSURANIUM RES LAB, OAK RIDGE, TN 37831 USA. NR 19 TC 12 Z9 12 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 0022-4596 EI 1095-726X J9 J SOLID STATE CHEM JI J. Solid State Chem. PD FEB 15 PY 1995 VL 115 IS 1 BP 71 EP 75 DI 10.1006/jssc.1995.1103 PG 5 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA RC018 UT WOS:A1995RC01800010 ER PT J AU DATYE, AK RIEGEL, G BOLTON, JR HUANG, M PRAIRIE, MR AF DATYE, AK RIEGEL, G BOLTON, JR HUANG, M PRAIRIE, MR TI MICROSTRUCTURAL CHARACTERIZATION OF A FUMED TITANIUM-DIOXIDE PHOTOCATALYST SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article ID METAL PARTICLES; TIO2; DECOMPOSITION AB We present observations of a fumed titania photocatalyst (Degussa, P25) using high resolution TEM and X-ray diffraction. The catalyst was observed as-received and after being used for photocatalytic destruction of salicylic acid. The characterization results suggest that the photocatalyst consists of individual single crystal particles of the rutile and anatase phases of titania; no amorphous titania particles could be identified conclusively. We also did not detect any particles of anatase that were covered by a layer of rutile, as proposed previously by Bickley et al. (J. Solid State Chem., 92, 178, 1991). No changes were seen in the titania after it was used for photocatalysis of salicylic acid at pH 6 for short times (less than 1 hr). (C) 1995 Academic Press, Inc. C1 UNIV WESTERN ONTARIO,DEPT CHEM,PHOTOCHEM UNIT,LONDON,ON N6A 5B7,CANADA. SANDIA NATL LABS,DEPT SOLAR THERMAL TECHNOL,ALBUQUERQUE,NM 87185. RP DATYE, AK (reprint author), UNIV NEW MEXICO,DEPT CHEM & NUCL ENGN,ALBUQUERQUE,NM 87131, USA. OI Datye, Abhaya/0000-0002-7126-8659 NR 17 TC 110 Z9 111 U1 1 U2 16 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD FEB 15 PY 1995 VL 115 IS 1 BP 236 EP 239 DI 10.1006/jssc.1995.1126 PG 4 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA RC018 UT WOS:A1995RC01800033 ER PT J AU YOO, MH ZOU, J FU, CL AF YOO, MH ZOU, J FU, CL TI MECHANISTIC MODELING OF DEFORMATION AND FRACTURE-BEHAVIOR IN TIAL AND TI3AL SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd International Conference on High Temperature Intermetallics CY MAY 16-19, 1994 CL SAN DIEGO, CA SP ASM INT DE TITANIUM; ALUMINUM; DEFORMATION; FRACTURE ID TITANIUM ALUMINIDES; TEMPERATURE; INTERMETALLICS; TOUGHNESS; CRYSTALS; ALLOYS; L12 AB Phase stability and bulk properties of TiAl and Ti3Al are investigated based on the first-principles local-density-functional approach, and deformation and fracture behavior of two-phase lamellar gamma-TiAl alloys are analyzed using the linear elasticity theory applied to interfaces, dislocations, and cracks. in terms of the calculated elastic constants, Young's and shear moduli are higher in Ti3Al than in TiAl. The coupling effect due to elastic incompatibility reduces the misfit strain at an interface when a tensile stress is applied normal to it. The mode mixity of stress concentration by a dislocation pile-up plays an important role in determining whether slip transfer or microcracking occurs at the interface. The fracture morphology reported in notched polysynthetically twinned crystals is explained in terms of the elastic interaction of a (11 ($) over bar 2)[1 ($) over bar 10] crack with an alpha(2)-Ti3Al plate. Additional factors that are involved in the brittle-to-ductile transition behavior of TiAl are discussed. RP YOO, MH (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, POB 2008, OAK RIDGE, TN 37831 USA. NR 56 TC 57 Z9 61 U1 0 U2 16 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 15 PY 1995 VL 192 BP 14 EP 23 DI 10.1016/0921-5093(94)03206-8 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QP321 UT WOS:A1995QP32100003 ER PT J AU PETROVIC, JJ AF PETROVIC, JJ TI MECHANICAL-BEHAVIOR OF MOSI2 AND MOSI2 COMPOSITES SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd International Conference on High Temperature Intermetallics CY MAY 16-19, 1994 CL SAN DIEGO, CA SP ASM INT DE MOLYBDENUM; SILICON; COMPOSITES ID HIGH-TEMPERATURE DEFORMATION; WSI2 SINGLE-CRYSTALS; MOLYBDENUM DISILICIDE AB MoSi2 is a key member of a new class of high-temperature structural silicide materials. Important features of the mechanical behavior of MoSi2 and MoSi2 composites are reviewed. The mechanical properties of Mosi, single crystals, polycrystalline MoSi2, and MoSi2-based composites are discussed in association with properties such as elevated temperature deformation and low-temperature fracture toughness. Interrelationships between single crystal, polycrystal, and composite mechanical behavior are identified. RP PETROVIC, JJ (reprint author), LOS ALAMOS NATL LAB, DIV MAT SCI & TECHNOL, CERAM SCI & TECHNOL GRP, LOS ALAMOS, NM 87545 USA. NR 25 TC 138 Z9 164 U1 1 U2 10 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 EI 1873-4936 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 15 PY 1995 VL 192 BP 31 EP 37 DI 10.1016/0921-5093(94)03246-7 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QP321 UT WOS:A1995QP32100005 ER PT J AU CHRZAN, DC MILLS, MJ GOODS, SH AF CHRZAN, DC MILLS, MJ GOODS, SH TI THEORY OF TRANSIENT CREEP IN THE L1(2) INTERMETALLIC COMPOUNDS DISPLAYING THE YIELD STRENGTH ANOMALY SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd International Conference on High Temperature Intermetallics CY MAY 16-19, 1994 CL SAN DIEGO, CA SP ASM INT DE CREEP; INTERMETALLICS; YIELD STRENGTH ID ROOM-TEMPERATURE; L12 ALLOYS; WEAK-BEAM; DISLOCATIONS; BEHAVIOR; MOTION; NI3AL AB A theory of transient creep in the L1(2) intermetallic alloys displaying the yield strength anomaly is presented. The theory is based on the hypothesis that the mobile a(101) superdislocations undergo a pinning-depinning transition, displaying critical behavior at a critical stress. The areal-velocity scaling function, which describes the average, time-dependent velocity profile of a dislocation as it propagates through the crystal, is introduced. The theory is compared with preliminary experiments. It is argued that the measurement of transient creep allows one to determine information concerning the deformation history of the sample. RP CHRZAN, DC (reprint author), SANDIA NATL LABS, LIVERMORE, CA 94551 USA. NR 18 TC 4 Z9 5 U1 1 U2 1 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 15 PY 1995 VL 192 BP 120 EP 124 DI 10.1016/0921-5093(94)03225-4 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QP321 UT WOS:A1995QP32100017 ER PT J AU MILLS, MJ ANGELO, JE DAW, MS WEINBURG, JD MIRACLE, DB AF MILLS, MJ ANGELO, JE DAW, MS WEINBURG, JD MIRACLE, DB TI FINE-STRUCTURE OF ALPHA[011] DISLOCATIONS AND THE MECHANICAL-PROPERTIES OF NIAL IN THE HARD ORIENTATION SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd International Conference on High Temperature Intermetallics CY MAY 16-19, 1994 CL SAN DIEGO, CA SP ASM INT DE DISLOCATION; MECHANICAL PROPERTIES; NICKEL; ALUMINUM ID SINGLE-CRYSTALS; DEFORMATION; MOTION AB The motion of a(011) dislocations is thought to play an important role in the deformation of NiAl single crystals when oriented along a (100) crystal direction (''hard'' orientation). in the present work, the structure of a(011) dislocations has been determined on several different length scales, using high resolution and weak-beam transmission electron microscopy. The observations indicate that a(011) edge dislocations decompose into two separate a(010) dislocations along the edge orientation, and that the overall shape of a(011) dislocation loops is non-planar. The embedded atom method has been used to study the energy and stability of a(011) edge dislocations, and the effects of the stress state and temperature on the dislocation core structure and mobility. A possible mechanism for the motion of a(011) dislocations will be discussed, and related to the fracture and deformation behavior of NiAl in the hard orientation. C1 UNIV ARIZONA, DEPT MAT SCI & ENGN, TUCSON, AZ 85721 USA. USAF, WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. RP MILLS, MJ (reprint author), SANDIA NATL LABS, LIVERMORE, CA 94551 USA. NR 27 TC 14 Z9 14 U1 0 U2 1 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 15 PY 1995 VL 192 BP 134 EP 141 DI 10.1016/0921-5093(94)03227-0 PG 8 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QP321 UT WOS:A1995QP32100019 ER PT J AU LIU, CT HORTON, JA AF LIU, CT HORTON, JA TI EFFECT OF REFRACTORY ALLOYING ADDITIONS ON MECHANICAL-PROPERTIES OF NEAR-STOICHIOMETRIC NIAL SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd International Conference on High Temperature Intermetallics CY MAY 16-19, 1994 CL SAN DIEGO, CA SP ASM INT DE ALLOYS; NICKEL; ALUMINUM; MECHANICAL PROPERTIES ID TENSILE; DUCTILITY; BEHAVIOR AB Alloying effects have been investigated in near-stoichiometric NiAl for the purpose of improving it mechanical properties. NiAl alloys containing up to 3% of Mo, W, Nb, Ta, Zr and Hf were prepared by are melting and drop casting, followed by hot extrusion at temperatures to 1000 degrees C. The mechanical properties of the NiAl alloys were characterized by tensile and creep testing at temperatures to 1000 degrees C. Among the alloying elements, Mo is found to be most effective in improving the room temperature ductility of NiAl alloys in stress-relieved conditions. Alloying with 1.0 +/- 0.6% Mo almost doubles the room temperature tensile ductility of NiAl and triples its yield strength at 1000 degrees C. The creep properties of Mo-modified NiAl alloys can be further improved by alloying with up to 1% Nb, Ta and Zr. Alloying with 1% Mo-Zr reduced the creep rate and extended the rupture life of NiAl by more than 5 orders of magnitude. Transmission electron microscope and electron microprobe studies show that the solubility of Mo, Nb and Zr is low, less than 0.1 at.%. Both coarse and fine precipitates enriched with refractory elements are observed, with fine particles about (0.1 mu m) distributed within grains. The mechanical properties of these NiAl alloys are discussed in terms of both particle strengthening and solid solution hardening. RP LIU, CT (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, POB 2008, OAK RIDGE, TN 37831 USA. OI Liu, Chain Tsuan/0000-0001-7888-9725 NR 30 TC 36 Z9 40 U1 3 U2 7 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 15 PY 1995 VL 192 BP 170 EP 178 DI 10.1016/0921-5093(94)03232-7 PG 9 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QP321 UT WOS:A1995QP32100024 ER PT J AU MALOY, SA GRAY, GT DAROLIA, R AF MALOY, SA GRAY, GT DAROLIA, R TI HIGH-STRAIN RATE DEFORMATION OF NIAL SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd International Conference on High Temperature Intermetallics CY MAY 16-19, 1994 CL SAN DIEGO, CA SP ASM INT DE STRAIN; DEFORMATION; NICKEL; ALUMINUM ID 1050 DEGREES K; SINGLE-CRYSTALS; PLASTIC-DEFORMATION; UNIFORM DEFORMATION; TENSILE; TEMPERATURE; KINKING AB Single-crystal NiAl (stoichiometric and Ni-49.75Al-0.25Fe) has been deformed in compression along [100] at strain rates of 0.001, 0.1 and 2000 s(-1), and temperatures of 76, 298 and 773 K. [111] slip was observed after testing at 76 K and a strain rate of 0.001 s(-1), as well as after testing at 298 K and a strain rate of 2000 s(-1). Kinking was observed after deformation at 298 K and a strain rate 0.001 s(-1), and sometimes at 298 K and a strain rate of 0.1 s(-1). Strain hardening rates of 8200 and 4000 MPa per unit strain were observed after testing at 773 K and 298 K, respectively, at a strain rate of 2000 s(-1). The mechanical testing results are discussed in reference to the resulting dislocation substructure. C1 GE CO, AIRCRAFT ENGINES, CINCINNATI, OH 45215 USA. RP MALOY, SA (reprint author), LOS ALAMOS NATL LAB, MST-5, G755, LOS ALAMOS, NM 87545 USA. RI Maloy, Stuart/A-8672-2009 OI Maloy, Stuart/0000-0001-8037-1319 NR 24 TC 13 Z9 13 U1 0 U2 6 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 15 PY 1995 VL 192 BP 249 EP 254 DI 10.1016/0921-5093(94)03256-4 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QP321 UT WOS:A1995QP32100034 ER PT J AU GEORGE, EP LIU, CT LIN, H POPE, DP AF GEORGE, EP LIU, CT LIN, H POPE, DP TI ENVIRONMENTAL EMBRITTLEMENT AND OTHER CAUSES OF BRITTLE GRAIN-BOUNDARY FRACTURE IN NI3AL SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT 3rd International Conference on High Temperature Intermetallics CY MAY 16-19, 1994 CL SAN DIEGO, CA SP ASM INT DE FRACTURE; NICKEL; ALUMINUM; BRITTLENESS ID INTERMETALLIC COMPOUND NI3AL; ROOM-TEMPERATURE DUCTILITY; ORDERED ALLOYS; DOPED NI3AL; UNIDIRECTIONAL SOLIDIFICATION; INTERGRANULAR FRACTURE; HYDROGEN EMBRITTLEMENT; MECHANICAL-PROPERTIES; STOICHIOMETRIC NI3AL; MAJOR CAUSE AB In this paper we review intrinsic and extrinsic sources of grain boundary brittleness in Ni3Al. Special attention is given to the recently discovered phenomenon of environmental embrittlement in Ni3Al, and how variables such as test environment, strain rate, temperature, grain boundary character, and microalloying additions affect ductility and fracture behavior. It is shown that environmental embrittlement is a major reason for the low ductility of Ni3Al in air; consistent with this, ductility is found to increase at high strain rates, cryogenic temperatures, and in environments containing low levels of water vapor. When environmental effects are carefully suppressed, the tensile ductility of Ni3Al increases dramatically, indicating that Ni3Al is not as intrinsically brittle as once thought. It is shown that the character of grain boundaries in Ni3Al depends strongly on the processing conditions. Some of these processing-related changes appear to be associated also with changes in ductility; however, additional research is needed to understand the detailed connection between the two. The ductilizing effect of boron in Ni3Al is shown to be related principally to its role in suppressing environmental embrittlement (partly by slowing down hydrogen diffusion). In addition, B enhances grain boundary strength and suppresses intergranular fracture. Much less is known about the way in which other alloying elements improve ductility. One possibility, which needs additional research, is that they alter the grain boundary character distributions in Ni3Al. C1 UNIV PENN, DEPT MAT SCI & ENGN, PHILADELPHIA, PA 19104 USA. RP GEORGE, EP (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, POB 2008, OAK RIDGE, TN 37831 USA. RI George, Easo/L-5434-2014; OI Liu, Chain Tsuan/0000-0001-7888-9725 NR 78 TC 49 Z9 52 U1 2 U2 7 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 15 PY 1995 VL 192 BP 277 EP 288 DI 10.1016/0921-5093(94)03236-X PG 12 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QP321 UT WOS:A1995QP32100038 ER PT J AU SMITH, WH ALI, I BEHRENS, B FORDHAM, C FOUDAS, C GOUSSIOU, A JAWORSKI, M KINNEL, T LACKEY, J ROBL, P SILVERSTEIN, S DAWSON, JW KRAKAUER, DA TALAGA, RL SCHLERETH, JL AF SMITH, WH ALI, I BEHRENS, B FORDHAM, C FOUDAS, C GOUSSIOU, A JAWORSKI, M KINNEL, T LACKEY, J ROBL, P SILVERSTEIN, S DAWSON, JW KRAKAUER, DA TALAGA, RL SCHLERETH, JL TI THE ZEUS CALORIMETER FIRST LEVEL TRIGGER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB The design of the ZEUS Calorimeter First Level Trigger (CFLT) is presented. The CFLT utilizes a pipelined architecture to provide trigger data for a Global First Level Trigger decision 5 mu s after each beam crossing, occurring every 96 ns. The charges from 13 K phototubes are summed into 1792 trigger tower pulseheights which are digitized by flash ADCs. The digital values are linearized, stored and used for sums and pattern tests. Summary data is forwarded to the Global First Level Trigger for each crossing 2 mu s after the crossing occurred. The CFLT determines the total energy, the total transverse energy, the missing energy, and the energy and number of isolated electrons and muons. It also provides information on the electromagnetic and hadronic energy deposited in various regions of the calorimeter. The CFLT has kept the experimental trigger rate below approximate to 200 Hz at the highest luminosity experienced at HERA. Performance studies suggest that the CFLT will keep the trigger rate below 1 kHz against a rate of proton-beam gas interactions on the order of the 100 KHz expected at design luminosity. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP SMITH, WH (reprint author), UNIV WISCONSIN,MADISON,WI, USA. NR 5 TC 28 Z9 28 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 FEB 15 PY 1995 VL 355 IS 2-3 BP 278 EP 294 DI 10.1016/0168-9002(94)01163-X PG 17 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QJ706 UT WOS:A1995QJ70600012 ER PT J AU GINGRICH, DM GREENIAUS, G KITCHING, P OLSEN, B PINFOLD, JL RODNING, NL BOOS, E SCHAOUTNIKOV, BO AUBERT, B BAZAN, A BEAUGIRAUD, B BONIFACE, J COLAS, J JEZEQUEL, S LEFLOUR, T MAIRE, M RIVAL, F STIPCEVIC, M THION, J VANDENPLAS, D WINGERTERSEEZ, I ZOLNIEROWSKI, YP CHMEISSANI, M FERNANDEZ, E GARRIDO, L MARTINEZ, M PADILLA, C GORDON, HA RADEKA, V RAHM, D STEPHANI, D CHEVALLEY, JL GIANOTTI, F NESSI, M POGGIOLI, L VUILLEMIN, V BAZE, JM GOSSET, L LAVOCAT, P LOTTIN, JP MANSOULIE, B MEYER, JP RENARDY, JF SCHWINDLING, J TEIGER, J COLLOT, J DESAINTIGNON, P DZAHINI, D HOSTACHY, JY LABORIE, G MAHOUT, G MERCHEZ, E POUXE, J HERVAS, L CHEKHTMAN, A COUSINOU, MC DARGENT, P DINKESPILER, B ETIENNE, F FASSNACHT, P FOUCHEZ, D MARTIN, L MIOTTO, A MONNIER, E NAGY, E OLIVETTO, C TISSERANT, S BATTISTONI, G CAMIN, DV CAVALLI, D COSTA, G COZZI, L CRAVERO, A FEDYAKIN, N FERRARI, A MANDELLI, L MAZZANTI, M PERINI, L SALA, P AZUELOS, G BEAUDOIN, G DEPOMMIER, P FLORIAN, EI LEROY, C ROY, J AUGE, E CHASE, R CHOLLET, JC DELATAILLE, C FAYARD, L FOURNIER, D HIROSOHO, A MERKEL, B NOPPE, JM PARROUR, G PETROFF, P SCHAFFER, A SEGUIN, N SERIN, L VICHOU, I LEDORTZ, O SAVOYNAVARRO, A SCHWEMLING, P EEK, LO LUNDJENSEN, B SODERQVIST, J LEFEBVRE, M ROBERTSON, S WHITE, J AF GINGRICH, DM GREENIAUS, G KITCHING, P OLSEN, B PINFOLD, JL RODNING, NL BOOS, E SCHAOUTNIKOV, BO AUBERT, B BAZAN, A BEAUGIRAUD, B BONIFACE, J COLAS, J JEZEQUEL, S LEFLOUR, T MAIRE, M RIVAL, F STIPCEVIC, M THION, J VANDENPLAS, D WINGERTERSEEZ, I ZOLNIEROWSKI, YP CHMEISSANI, M FERNANDEZ, E GARRIDO, L MARTINEZ, M PADILLA, C GORDON, HA RADEKA, V RAHM, D STEPHANI, D CHEVALLEY, JL GIANOTTI, F NESSI, M POGGIOLI, L VUILLEMIN, V BAZE, JM GOSSET, L LAVOCAT, P LOTTIN, JP MANSOULIE, B MEYER, JP RENARDY, JF SCHWINDLING, J TEIGER, J COLLOT, J DESAINTIGNON, P DZAHINI, D HOSTACHY, JY LABORIE, G MAHOUT, G MERCHEZ, E POUXE, J HERVAS, L CHEKHTMAN, A COUSINOU, MC DARGENT, P DINKESPILER, B ETIENNE, F FASSNACHT, P FOUCHEZ, D MARTIN, L MIOTTO, A MONNIER, E NAGY, E OLIVETTO, C TISSERANT, S BATTISTONI, G CAMIN, DV CAVALLI, D COSTA, G COZZI, L CRAVERO, A FEDYAKIN, N FERRARI, A MANDELLI, L MAZZANTI, M PERINI, L SALA, P AZUELOS, G BEAUDOIN, G DEPOMMIER, P FLORIAN, EI LEROY, C ROY, J AUGE, E CHASE, R CHOLLET, JC DELATAILLE, C FAYARD, L FOURNIER, D HIROSOHO, A MERKEL, B NOPPE, JM PARROUR, G PETROFF, P SCHAFFER, A SEGUIN, N SERIN, L VICHOU, I LEDORTZ, O SAVOYNAVARRO, A SCHWEMLING, P EEK, LO LUNDJENSEN, B SODERQVIST, J LEFEBVRE, M ROBERTSON, S WHITE, J TI PERFORMANCE OF A LIQUID ARGON ACCORDION HADRONIC CALORIMETER PROTOTYPE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID ELECTROMAGNETIC CALORIMETER; GEOMETRY AB A liquid argon hadronic calorimeter using the ''accordion'' geometry and the electrostatic transformer readout scheme has been tested at CERN, together with a liquid argon accordion electromagnetic prototype. The results obtained for pions on the linearity, the energy resolution and the uniformity of the calorimeter response are well within the requirements for operation at the LHC. C1 CENS,CEA,DSM,DAPNIA,GIF SUR YVETTE,FRANCE. UNIV ALBERTA,EDMONTON,AB,CANADA. LAPP,ANNECY,FRANCE. UNIV AUTONOMA BARCELONA,E-08193 BARCELONA,SPAIN. BROOKHAVEN NATL LAB,UPTON,NY 11973. CERN,CH-1211 GENEVA,SWITZERLAND. ISN,GRENOBLE,FRANCE. UNIV AUTONOMA MADRID,MADRID,SPAIN. CPP,MARSEILLE,FRANCE. UNIV MILAN,DIPARTIMENTO FIS,MILAN,ITALY. IST NAZL FIS NUCL,I-20133 MILAN,ITALY. UNIV MONTREAL,MONTREAL,PQ,CANADA. LAL,ORSAY,FRANCE. UNIV PARIS 06,LPNHE,PARIS,FRANCE. UNIV PARIS 07,PARIS,FRANCE. ROYAL INST TECHNOL,S-10044 STOCKHOLM,SWEDEN. UNIV VICTORIA,VICTORIA,BC,CANADA. RI Boos, Eduard/D-9748-2012; sala, paola/E-2868-2013; Chmeissani, Mokhtar/G-4346-2015; Fernandez, Enrique/L-5387-2014; OI sala, paola/0000-0001-9859-5564; Chmeissani, Mokhtar/0000-0002-2287-4791; Fernandez, Enrique/0000-0002-6405-9488; Garrido Beltran, Lluis/0000-0001-8883-6539 NR 17 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD FEB 15 PY 1995 VL 355 IS 2-3 BP 295 EP 307 DI 10.1016/0168-9002(94)01137-0 PG 13 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QJ706 UT WOS:A1995QJ70600013 ER PT J AU TROKENHEIM, S SARMIENTO, M SETH, KK BARTOSZEK, L AF TROKENHEIM, S SARMIENTO, M SETH, KK BARTOSZEK, L TI A P(P)OVER-BAR LUMINOSITY MONITOR FOR FERMILAB EXPERIMENT E760 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB The design and performance of the luminosity monitor for Fermilab experiment E760, in which the circulating antiproton beam in the FNAL antiproton accumulator intersects a hydrogen gas-jet target, is described. Absolute luminosity monitoring at the level of +/-0.8%(statistical) +/-2.1%(systematic) is achieved. The luminosity monitor also enables forward scattering parameters to be measured for momenta in the 3-8 GeV range with greater precision than achieved before. C1 NORTHWESTERN UNIV,EVANSTON,IL 60208. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. NR 7 TC 13 Z9 13 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 FEB 15 PY 1995 VL 355 IS 2-3 BP 308 EP 319 DI 10.1016/0168-9002(94)01167-2 PG 12 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QJ706 UT WOS:A1995QJ70600014 ER PT J AU CROW, ML STEYERL, A HAYTER, JB MCMANAMY, TJ AF CROW, ML STEYERL, A HAYTER, JB MCMANAMY, TJ TI ULTRACOLD NEUTRON TURBINE FOR THE ADVANCED NEUTRON SOURCE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID ELECTRIC-DIPOLE MOMENT; COLD NEUTRONS; REFLECTION; LIFETIME; SEARCH AB The paper describes a design for an ultracold neutron turbine source which has been developed for the planned Advanced Neutron Source at Oak Ridge. An ''S''-shaped neutron guide transports very cold neutrons from a horizontal Cold Source to the turbine location. For the design neutron velocity of 40 m/s, this guide approaches the efficiency of a straight guide, while it filters strongly against neutrons with velocities above 60 m/s. The proposed turbine is designed for operation at a peripheral velocity of 20 m/s. This design speed, slower than that of existing turbines, has been chosen to minimize the effect of the circular turbine motion. The lower speed, coupled with the use of Ni-58 as the turbine blade material, allows a significant increase in performance with fewer blades. C1 UNIV RHODE ISL,DEPT PHYS,KINGSTON,RI 02881. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 24 TC 2 Z9 2 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 FEB 15 PY 1995 VL 355 IS 2-3 BP 484 EP 493 DI 10.1016/0168-9002(94)01148-6 PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QJ706 UT WOS:A1995QJ70600036 ER PT J AU CROWELL, B CARPENTER, MP HENRY, RG JANSSENS, RVF KHOO, TL LAURITSEN, T NISIUS, D AF CROWELL, B CARPENTER, MP HENRY, RG JANSSENS, RVF KHOO, TL LAURITSEN, T NISIUS, D TI BACKGROUND SUBTRACTION FOR HIGH-FOLD GAMMA-RAY COINCIDENCE DATA SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB A method is presented for automatically performing background-subtraction for high-fold gamma-ray coincidence data. The method can be applied to any coincidence fold, and is correct to all orders. Some possible difficulties associated with the propagation of statistical uncertainties are discussed. C1 PURDUE UNIV,W LAFAYETTE,IN 47907. RP CROWELL, B (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 11 TC 40 Z9 40 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 FEB 15 PY 1995 VL 355 IS 2-3 BP 575 EP 581 DI 10.1016/0168-9002(94)01118-4 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QJ706 UT WOS:A1995QJ70600049 ER PT J AU HSU, HH VASILIK, DG CHEN, J AF HSU, HH VASILIK, DG CHEN, J TI AN OPTIMAL TARGET-FILTER SYSTEM FOR ELECTRON-BEAM GENERATED X-RAY-SPECTRA SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB An electron beam generated X-ray spectrum consists of characteristic X-rays of the target and continuous bremsstrahlung. The percentage of characteristic X-rays over the entire energy spectrum depends on the beam energy and the filter thickness. To determine the optimal electron beam energy and filter thickness, one can either conduct many experimental measurements, or perform a series of Monte Carlo simulations. Monte Carlo simulations are shown to be an efficient tool for determining the optimal target-filter system for electron beam generated X-ray spectra. Three of the most commonly used low-energy X-ray metal targets (Cu, Zn and Mo) are chosen for this study to illustrate the power of Monte Carlo simulations. C1 GSF,INST STRAHLENBIOL,D-87578 OBERSCHLEISSHEIM,GERMANY. RP HSU, HH (reprint author), LOS ALAMOS NATL LAB,HLTH PHYS MEASUREMENT GRP,LOS ALAMOS,NM 87545, USA. NR 2 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 FEB 15 PY 1995 VL 355 IS 2-3 BP 641 EP 644 DI 10.1016/0168-9002(94)01152-4 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QJ706 UT WOS:A1995QJ70600057 ER PT J AU FILL, EE LI, YL SCHLOGL, D STEINGRUBER, J NILSEN, J AF FILL, EE LI, YL SCHLOGL, D STEINGRUBER, J NILSEN, J TI SENSITIVITY OF LASING IN NEON-LIKE ZINC AT 21.2 NM TO THE USE OF THE PREPULSE TECHNIQUE SO OPTICS LETTERS LA English DT Article ID X-RAY LASERS AB We report strong lasing in zinc on the neonlike 3p --> 3s, J = 0 --> 1 transition at 21.2 nm when the prepulse technique of using a low-intensity prepulse before the main optical drive pulse is used with the 1,315-mu m Asterix laser to illuminate the zinc target. Without the use of the prepulse, this line is not visible. The usual J = 2 --> 1 lines at 26.2 and 26.7 nm are observed weakly both with and without the use of the prepulse. By variation of the prepulse energy, we demonstrate that even a very weak prepulse with less than 0.1% of the main pulse energy can enable the zinc to lase at 21.2 nm. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP FILL, EE (reprint author), MAX PLANCK INST QUANTUM OPT,POSTFACH 1513,D-85740 GARCHING,GERMANY. NR 16 TC 49 Z9 50 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD FEB 15 PY 1995 VL 20 IS 4 BP 374 EP 376 DI 10.1364/OL.20.000374 PG 3 WC Optics SC Optics GA QG831 UT WOS:A1995QG83100010 PM 19859192 ER PT J AU LEE, H KLEIN, MV FU, LP GILLILAND, GD HJALMARSON, HP ASPNES, DE HSIEH, KC KIM, J YU, JG CRAFORD, MG AF LEE, H KLEIN, MV FU, LP GILLILAND, GD HJALMARSON, HP ASPNES, DE HSIEH, KC KIM, J YU, JG CRAFORD, MG TI OBSERVATION OF QUASI-DIRECT TRANSITIONS IN IN1-XGAXP/GRADED GAP(0.58-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.75) ALLOYS NEAR THE GAMMA-X(1) CROSSOVER SO PHYSICAL REVIEW B LA English DT Article ID SEMICONDUCTOR ALLOYS; BAND-STRUCTURE; ELECTRONIC-STRUCTURE; ORDERED GA0.5IN0.5P; ELECTROREFLECTANCE; PHOTOLUMINESCENCE; TEMPERATURE; GAAS1-XPX; GAXIN1-XP; STATES C1 UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801. SANDIA NATL LABS,DEPT 1112,ALBUQUERQUE,NM 87185. EMORY UNIV,DEPT PHYS,ATLANTA,GA 30322. SANDIA NATL LABS,DEPT 1322,ALBUQUERQUE,NM 87185. N CAROLINA STATE UNIV,DEPT PHYS,RALEIGH,NC 27695. UNIV ILLINOIS,DEPT ELECT & COMP ENGN,URBANA,IL 61801. UNIV CINCINNATI,DEPT MAT SCI,CINCINNATI,OH 45221. HEWLETT PACKARD CORP,DIV OPTOELECTR,SAN JOSE,CA 95131. RP LEE, H (reprint author), UNIV ILLINOIS,DEPT PHYS,1110 W GREEN ST,URBANA,IL 61801, USA. NR 38 TC 6 Z9 6 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 7 BP 4186 EP 4192 DI 10.1103/PhysRevB.51.4186 PG 7 WC Physics, Condensed Matter SC Physics GA QH869 UT WOS:A1995QH86900022 ER PT J AU RUBIO, A COHEN, ML AF RUBIO, A COHEN, ML TI QUASI-PARTICLE EXCITATIONS IN GAAS1-XNX AND ALAS1-XNX ORDERED ALLOYS SO PHYSICAL REVIEW B LA English DT Article ID BAND-GAPS; SEMICONDUCTOR ALLOYS; GALLIUM NITRIDE; INSULATORS; PSEUDOPOTENTIALS; SUPERLATTICES; ENERGIES; DISORDER; DENSITY; STATES C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP RUBIO, A (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. RI Rubio, Angel/A-5507-2008 OI Rubio, Angel/0000-0003-2060-3151 NR 33 TC 95 Z9 95 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 7 BP 4343 EP 4346 DI 10.1103/PhysRevB.51.4343 PG 4 WC Physics, Condensed Matter SC Physics GA QH869 UT WOS:A1995QH86900043 ER PT J AU LIU, CL PLIMPTON, SJ AF LIU, CL PLIMPTON, SJ TI MOLECULAR-STATICS AND MOLECULAR-DYNAMICS STUDY OF DIFFUSION ALONG [001]TILT GRAIN-BOUNDARIES IN AG SO PHYSICAL REVIEW B LA English DT Article ID EMBEDDED-ATOM-METHOD; METALS; MODEL C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP LIU, CL (reprint author), OAK RIDGE NATL LAB,DIV SOLID STATE,POB 2008,OAK RIDGE,TN 37830, USA. NR 13 TC 26 Z9 26 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 7 BP 4523 EP 4528 DI 10.1103/PhysRevB.51.4523 PG 6 WC Physics, Condensed Matter SC Physics GA QH869 UT WOS:A1995QH86900062 ER PT J AU DAVIDS, PS WANG, L SAXENA, A BISHOP, AR AF DAVIDS, PS WANG, L SAXENA, A BISHOP, AR TI INELASTIC ELECTRON-SCATTERING AND MAGNETIC COLLECTIVE RESPONSE OF MESOSCOPIC CARBON STRUCTURES SO PHYSICAL REVIEW B LA English DT Article ID ENERGY-LOSS SPECTROSCOPY; CYLINDRICAL TUBULES; FULLERENE TUBULES; C-60; NANOTUBES; CLUSTERS; C60; EXCITATIONS; MICROTUBULES; MECHANISM C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP DAVIDS, PS (reprint author), LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545, USA. RI Davids, Paul/D-1550-2010 NR 50 TC 10 Z9 10 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 7 BP 4557 EP 4568 DI 10.1103/PhysRevB.51.4557 PG 12 WC Physics, Condensed Matter SC Physics GA QH869 UT WOS:A1995QH86900067 ER PT J AU SODERLIND, P ERIKSSON, O TRYGG, J JOHANSSON, B WILLS, JM AF SODERLIND, P ERIKSSON, O TRYGG, J JOHANSSON, B WILLS, JM TI DENSITY-FUNCTIONAL CALCULATIONS FOR CERIUM METAL SO PHYSICAL REVIEW B LA English DT Note ID GENERALIZED GRADIENT APPROXIMATION; CRYSTAL-STRUCTURE; VOLUME COLLAPSE; LOCAL-DENSITY; HIGH-PRESSURE; BAND; TRANSITION; SYSTEMS; STATE; IRON C1 UNIV UPPSALA,DEPT PHYS,CONDENSED MATTER THEORY GRP,S-75121 UPPSALA,SWEDEN. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP SODERLIND, P (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 26 TC 21 Z9 22 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 7 BP 4618 EP 4621 DI 10.1103/PhysRevB.51.4618 PG 4 WC Physics, Condensed Matter SC Physics GA QH869 UT WOS:A1995QH86900074 ER PT J AU ASOKAKUMAR, P SZPALA, S NIELSEN, B SZELES, C LYNN, KG LANFORD, WA SHEPARD, CA GOSSMANN, HJ AF ASOKAKUMAR, P SZPALA, S NIELSEN, B SZELES, C LYNN, KG LANFORD, WA SHEPARD, CA GOSSMANN, HJ TI HYDROGEN-INDUCED BREAKDOWN OF LOW-TEMPERATURE MOLECULAR-BEAM EPITAXY OF SI SO PHYSICAL REVIEW B LA English DT Note ID POINT-DEFECTS; THIN-FILMS; SILICON; COVERAGE; GROWTH C1 SUNY ALBANY,DEPT PHYS,ALBANY,NY 12222. AT&T BELL LABS,MURRAY HILL,NJ 07974. RP ASOKAKUMAR, P (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. RI Nielsen, Bent/B-7353-2009 OI Nielsen, Bent/0000-0001-7016-0040 NR 16 TC 8 Z9 8 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. 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RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 43 TC 54 Z9 54 U1 0 U2 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 8 BP 4813 EP 4819 DI 10.1103/PhysRevB.51.4813 PG 7 WC Physics, Condensed Matter SC Physics GA QP758 UT WOS:A1995QP75800009 ER PT J AU ZAKHAROV, O RUBIO, A COHEN, ML AF ZAKHAROV, O RUBIO, A COHEN, ML TI CALCULATED STRUCTURAL AND ELECTRONIC-PROPERTIES OF CDSE UNDER PRESSURE SO PHYSICAL REVIEW B LA English DT Article ID BRILLOUIN-ZONE; SPECIAL POINTS; BAND-GAPS; SEMICONDUCTORS; INSULATORS; ENERGY; STATES C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV SCI MAT, BERKELEY, CA 94720 USA. RP UNIV CALIF BERKELEY, DEPT PHYS, BERKELEY, CA 94720 USA. RI Rubio, Angel/A-5507-2008 OI Rubio, Angel/0000-0003-2060-3151 NR 32 TC 36 Z9 38 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 8 BP 4926 EP 4930 DI 10.1103/PhysRevB.51.4926 PG 5 WC Physics, Condensed Matter SC Physics GA QP758 UT WOS:A1995QP75800024 ER PT J AU SIEGNER, U MYCEK, MA GLUTSCH, S CHEMLA, DS AF SIEGNER, U MYCEK, MA GLUTSCH, S CHEMLA, DS TI QUANTUM INTERFERENCE IN THE SYSTEM OF LORENTZIAN AND FANO MAGNETOEXCITON RESONANCES IN GAAS SO PHYSICAL REVIEW B LA English DT Article ID COHERENT DYNAMICS; EXCITONS; LIGHT; BEATS; WELLS; POLARIZATION; SPECTROSCOPY C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP SIEGNER, U (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 25 TC 34 Z9 34 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 8 BP 4953 EP 4961 DI 10.1103/PhysRevB.51.4953 PG 9 WC Physics, Condensed Matter SC Physics GA QP758 UT WOS:A1995QP75800028 ER PT J AU WAMPLER, WR AF WAMPLER, WR TI LOCATION OF DEUTERIUM ON THE SILICON (100) MONOHYDRIDE SURFACE DETERMINED BY TRANSMISSION ION CHANNELING SO PHYSICAL REVIEW B LA English DT Article ID ABSOLUTE CROSS-SECTION; SI(100) SURFACE; HYDROGEN CHEMISORPTION; ADSORPTION-POSITION; RECOIL DETECTION; DIHYDRIDE; 2X1; SI RP WAMPLER, WR (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 27 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 15 PY 1995 VL 51 IS 8 BP 4998 EP 5004 DI 10.1103/PhysRevB.51.4998 PG 7 WC Physics, Condensed Matter SC Physics GA QP758 UT WOS:A1995QP75800032 ER PT J AU RUCKMAN, MW QIU, SL STRONGIN, M AF RUCKMAN, MW QIU, SL STRONGIN, M TI INTERACTION OF YTTERBIUM WITH SOLID AMMONIA AND XENON STUDIED USING PHOTOELECTRON-SPECTROSCOPY SO PHYSICAL REVIEW B LA English DT Article ID RARE-EARTH-METALS; SOLVATED ELECTRONS; 4F LEVELS; PHOTOEMISSION; YB; EMISSION RP RUCKMAN, MW (reprint author), BROOKHAVEN NATL LAB, DEPT PHYS, UPTON, NY 11973 USA. NR 43 TC 0 Z9 0 U1 0 U2 0 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. 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NR 14 TC 14 Z9 14 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD FEB 15 PY 1995 VL 32 IS 4 BP 611 EP 616 DI 10.1016/0956-716X(95)90846-C PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA PY850 UT WOS:A1995PY85000023 ER PT J AU JIMENEZMELENDO, M DOMINGUEZRODRIGUEZ, A ROUTBORT, JL AF JIMENEZMELENDO, M DOMINGUEZRODRIGUEZ, A ROUTBORT, JL TI DEFORMATION MAPS OF YBA2CU3O7-X SUPERCONDUCTORS SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID COMPRESSIVE CREEP; SUPERPLASTICITY; DIFFUSION; FLOW C1 ARGONNE NATL LAB,DIV ENERGY TECHNOL,ARGONNE,IL 60439. RP JIMENEZMELENDO, M (reprint author), UNIV SEVILLA,DEPT FIS MAT CONDENSADA,APTDO 1065,E-41080 SEVILLE,SPAIN. OI Jimenez Melendo, Manuel/0000-0002-8423-5928; Dominguez-Rodriguez, Arturo/0000-0003-1598-5669 NR 22 TC 8 Z9 8 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD FEB 15 PY 1995 VL 32 IS 4 BP 621 EP 626 DI 10.1016/0956-716X(95)90848-E PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA PY850 UT WOS:A1995PY85000025 ER PT J AU MARTIN, T LOSS, D AF MARTIN, T LOSS, D TI PHASE-DIAGRAM FOR A LUTTINGER LIQUID COUPLED TO PHONONS IN ONE-DIMENSION SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Article ID METAL-INSULATOR-TRANSITION; HUBBARD-MODEL; QUANTUM FLUIDS; 1 DIMENSION; FERMI GAS; SYSTEMS; CONDUCTORS; DYNAMICS; SUPERCONDUCTIVITY AB We consider a one-dimensional system consisting of electrons with short-ranged repulsive interactions and coupled to small-momentum transfer acoustic phonons. The interacting electrons are bosonized and described in terms of a Luttinger liquid which allows us to calculate exactly the one- and two-electron Green function. For non-interacting electrons, the coupling to phonons alone induces a singularity at the Fermi surface which is analogous to that encountered for electrons with an instantaneous attractive interaction. The exponents which determine the presence of singlet/triplet superconducting pairing fluctuations, and spin/charge density wave fluctuations are strongly affected by the presence of the Wentzel-Bardeen singularity, resulting in the favoring of superconducting fluctuations. For the Hubbard model the equivalent of a phase diagram is established, as a function of: the electron-phonon coupling, the electron filling factor, and the on-site repulsion between electrons. The Wentzel-Bardeen singularity can be reached for arbitrary values of the electron-phonon coupling constant by varying the filling factor. This provides an effective mechanism to push the system from the antiferromagnetic into the metallic phase, and finally into the superconducting phase as the electron filling factor is increased towards half-filling. C1 SIMON FRASER UNIV, DEPT PHYS, BURNABY, BC V5A 1S6, CANADA. INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE, FRANCE. RP MARTIN, T (reprint author), LOS ALAMOS NATL LAB, CNLS, DIV THEORET, LOS ALAMOS, NM 87545 USA. RI Loss, Daniel/A-3721-2008 OI Loss, Daniel/0000-0001-5176-3073 NR 55 TC 16 Z9 16 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 FEB 14 PY 1995 VL 9 IS 4-5 BP 495 EP 533 DI 10.1142/S0217979295000185 PG 39 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA QX263 UT WOS:A1995QX26300004 ER PT J AU GIUSTISUZOR, A MIES, FH DIMAURO, LF CHARRON, E YANG, B AF GIUSTISUZOR, A MIES, FH DIMAURO, LF CHARRON, E YANG, B TI DYNAMICS OF H-2(+) IN INTENSE LASER FIELDS SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Review ID ABOVE-THRESHOLD DISSOCIATION; MULTIPHOTON IONIZATION; MOLECULAR STABILIZATION; PHOTO-DISSOCIATION; SCHRODINGER-EQUATION; 6-PHOTON IONIZATION; DIVERGING COUPLINGS; ENERGY FORMALISM; H-2+; PHOTODISSOCIATION AB A number of unexpected features of small molecules subjected to intense laser fields, with wavelengths ranging from infrared to ultraviolet, have been observed or predicted in the past few years: above-threshold dissociation, molecular bond softening, vibrational population trapping. We review these processes for, the case of the molecular ion H-2(+) and discuss the experimental and theoretical tools that are used to study this system. Both electron and proton energy distributions are used to interpret the experimental results. Theoretically, the fragmentation dynamics can be described equivalently as a laser-assisted half-collision process, using solutions of the time-independent Floquet theory, or as the evolution of a wavepacket subjected to a classical radiation field with a given pulse shape, using solutions of the time-dependent Schrodinger equation. A broad range of laser intensity and pulsewidth has been explored, with the short-pulse results (analysed in terms of 'dressed' potential curves) offering the best interface between theory and experiment. We finally report on a promising new avenue for coherent control of fragmentation dynamics, through the use of two-colour phase-locked radiation. C1 LAB CHIM PHYS PARIS,F-75231 PARIS,FRANCE. NIST,GAITHERSBURG,MD 20899. BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. RP GIUSTISUZOR, A (reprint author), UNIV PARIS 11,PHOTOPHYS MOLEC LAB,BATIMENT 213,F-91405 ORSAY,FRANCE. RI Charron, Eric/A-9017-2011 OI Charron, Eric/0000-0003-1660-6368 NR 65 TC 337 Z9 340 U1 6 U2 45 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD FEB 14 PY 1995 VL 28 IS 3 BP 309 EP 339 DI 10.1088/0953-4075/28/3/006 PG 31 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QJ246 UT WOS:A1995QJ24600006 ER PT J AU MOJARRABI, B GULLEY, RJ MIDDLETON, AG CARTWRIGHT, DC TEUBNER, PJO BUCKMAN, SJ BRUNGER, MJ AF MOJARRABI, B GULLEY, RJ MIDDLETON, AG CARTWRIGHT, DC TEUBNER, PJO BUCKMAN, SJ BRUNGER, MJ TI ELECTRON COLLISIONS WITH NO - ELASTIC-SCATTERING AND ROVIBRATIONAL (0-]1, 2, 3, 4) EXCITATION CROSS-SECTIONS SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID INTERMEDIATE ENERGY REGION; VIBRATIONAL-EXCITATION; GROUND-STATE; IMPACT; N2O; RESONANCES; MOLECULES; NITROGEN; N-2; SPECTROSCOPY AB The relative flow technique, utilizing helium as a cross section standard, has been applied to measure absolute elastic differential cross sections for electron scattering from nitric oxide (NO). The present elastic measurements were conducted at nine energies in the range 1.5-40 eV, which represents an important extension to the only previous study of this system by Kubo and co-workers. Furthermore, the uncertainties in the present data are significantly reduced in comparison to those quoted in the earlier work. The current elastic differential cross sections were measured at the Australian National University over an angular range 10 degrees-130 degrees. We also report the first measurements of absolute differential cross sections for rovibrational (0 --> 1, 2, 3, 4) excitation of the NO ground electronic state. These were conducted at six energies in the range 7.5-40 eV and were measured at Flinders University over the angular range 10 degrees-90 degrees. The differential cross sections for both the elastic and inelastic processes are compared with the results of the recent Born-closure Schwinger variational method calculation of Mu-Tao Lee and colleagues. C1 AUSTRALIAN NATL UNIV, RES SCH PHYS SCI & ENGN, ELECTRON PHYS GRP, CANBERRA, ACT 2601, AUSTRALIA. LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM USA. RP MOJARRABI, B (reprint author), FLINDERS UNIV S AUSTRALIA, INST ATOM STUDIES, GPO BOX 2100, ADELAIDE, SA 5001, AUSTRALIA. RI Buckman, Stephen/B-4750-2009 NR 61 TC 31 Z9 32 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD FEB 14 PY 1995 VL 28 IS 3 BP 487 EP 504 DI 10.1088/0953-4075/28/3/019 PG 18 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QJ246 UT WOS:A1995QJ24600019 ER PT J AU RITHIDECH, K BOND, VP CRONKITE, EP THOMPSON, MH BULLIS, JE AF RITHIDECH, K BOND, VP CRONKITE, EP THOMPSON, MH BULLIS, JE TI HYPERMUTABILITY OF MOUSE CHROMOSOME-2 DURING THE DEVELOPMENT OF X-RAY-INDUCED MURINE MYELOID-LEUKEMIA SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID DELETION; SITES; MICE AB In an effort to identify the precise role of a deletion at regions D-E of mouse chromosome 2 [del2(D-E)] during the development of radiation-induced myeloid leukemia, we conducted a serial sacrifice study in which metaphase chromosomes were examined by the G-banding technique. Such metaphase cells were collected from x-irradiated mice during the period of transformation of some of the normal hematopoietic cells to the fully developed leukemic phenotype. A group of 250 CBA/Ca male mice (10-12 weeks old) were exposed to a single dose of 2 Gy of 250-kilovolt-peak x-rays; 42 age-matched male mice served as controls. Groups of randomly selected mice were sacrificed at 20 hr, 1 week, and then at intervals of 3 months up to 24 months after x-irradiation. Slides for cytogenetic, hematological, and histological examination were prepared for each animal at each sacrifice time. An expansion of cells with lesions on one copy of chromosome 2 was evident in 20-25% of treated mice at each sacrifice time. The majority of such lesions were translocations at 2F or 2H, strongly suggesting hypermutability of these sites on mouse chromosome 2. No lesions were found in control mice. The finding leads to the possibility that genomic lesions close to 2D and 2E are aberrants associated with radiation leukemogenesis, whereas a single clone of cells with a del2(D-E) may lead directly to overt leukemia. The data also indicate that leukemic transformation arises from the cumulative effects of multiple genetic events on chromosome 2, reinforcing the thesis that multiple steps of mutation occur in the pathogenesis of cancer. RP RITHIDECH, K (reprint author), ASSOC UNIV INC,BROOKHAVEN NATL LAB,POB 5000,UPTON,NY 11973, USA. NR 15 TC 46 Z9 46 U1 0 U2 0 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD FEB 14 PY 1995 VL 92 IS 4 BP 1152 EP 1156 DI 10.1073/pnas.92.4.1152 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QG770 UT WOS:A1995QG77000046 PM 7862651 ER PT J AU SIMION, BM THOMAS, G RAMESH, R KERAMIDAS, VG PFEFFER, RL AF SIMION, BM THOMAS, G RAMESH, R KERAMIDAS, VG PFEFFER, RL TI GROWTH AND CHARACTERIZATION OF (Y3FE5O12-BI3FE5O12) HETEROSTRUCTURES BY PULSED-LASER DEPOSITION SO APPLIED PHYSICS LETTERS LA English DT Article ID IRON-GARNET FILMS C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. BELL COMMUN RES INC,RED BANK,NJ 07701. USA,RES LAB,FT MONMOUTH,NJ 07701. RP SIMION, BM (reprint author), UNIV CALIF BERKELEY,DEPT MAT SCI & ENGN,BERKELEY,CA 94720, USA. NR 7 TC 16 Z9 16 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 13 PY 1995 VL 66 IS 7 BP 830 EP 832 DI 10.1063/1.113436 PG 3 WC Physics, Applied SC Physics GA QG232 UT WOS:A1995QG23200018 ER PT J AU FLORENCIO, J SEN, S CAI, ZX AF FLORENCIO, J SEN, S CAI, ZX TI DYNAMIC STRUCTURE FACTOR OF THE TRANSVERSE ISING-MODEL SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID GENERALIZED LANGEVIN EQUATION; INFINITE CONTINUED FRACTIONS; QUANTUM SPIN DYNAMICS; MANY-BODY SYSTEM; RECURRENCE RELATIONS; HEISENBERG CHAIN; DIRECT SUMMATION; SURFACE-SPIN; XY-CHAIN; RELAXATION AB We report the first analytic study of real time and frequency dependent behaviour at T = infinity of the 2D square lattice transverse Ising moder. Our study, along with known results in the 1D case, in the mean field or infinity D case and in other studies, helps understand the experimentally obtained longitudinal dynamic structure factor of the induced moment ferromagnet LiTbF4 studied by Youngblood et al, and is consistent with the studies of Kotzler et al. C1 SUNY BUFFALO, DEPT PHYS, BUFFALO, NY 14260 USA. BROOKHAVEN NATL LAB, DIV MAT SCI, UPTON, NY 11973 USA. RP PENN STATE UNIV, DEPT PHYS, ALTOONA, PA 16601 USA. NR 43 TC 7 Z9 7 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 EI 1361-648X J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD FEB 13 PY 1995 VL 7 IS 7 BP 1363 EP 1371 DI 10.1088/0953-8984/7/7/017 PG 9 WC Physics, Condensed Matter SC Physics GA QJ247 UT WOS:A1995QJ24700017 ER PT J AU BHATTACHARYA, T LACAZE, R MOREL, A AF BHATTACHARYA, T LACAZE, R MOREL, A TI LARGE ENERGY CUMULANTS IN THE 2D POTTS-MODEL AND THEIR EFFECTS IN FINITE-SIZE ANALYSIS SO NUCLEAR PHYSICS B LA English DT Article ID 1ST-ORDER PHASE-TRANSITIONS; MONTE-CARLO CALCULATION; CORRELATION LENGTH; TENSION AB We develop an ansatz for expressing the free energy of the two-dimensional q-states Potts model for q > 4 near its first order phase transition point. We notice that for the moderate values of q less than or similar to 15, the energy profile at the phase transition is not expressible as a sum of gaussians. We discuss how this affects the traditional finite size analysis of this phase transition. In particular, the dominant length scale governing the finite size corrections turns out to be much (similar to 6 times) larger than the largest correlation length in the problem. C1 CE SACLAY, CEA, SERV PHYS THEOR, F-91191 GIF SUR YVETTE, FRANCE. UNIV PARIS 11, ASCI, F-91405 ORSAY, FRANCE. RP LOS ALAMOS NATL LAB, GRP T8, MS B285, POB 1663, LOS ALAMOS, NM 87544 USA. RI Bhattacharya, Tanmoy/J-8956-2013 OI Bhattacharya, Tanmoy/0000-0002-1060-652X NR 29 TC 14 Z9 14 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 EI 1873-1562 J9 NUCL PHYS B JI Nucl. Phys. B PD FEB 13 PY 1995 VL 435 IS 3 BP 526 EP 554 DI 10.1016/0550-3213(94)00393-S PG 29 WC Physics, Particles & Fields SC Physics GA QE674 UT WOS:A1995QE67400007 ER PT J AU CAI, D BISHOP, AR GRONBECHJENSEN, N SALERNO, M AF CAI, D BISHOP, AR GRONBECHJENSEN, N SALERNO, M TI ELECTRIC-FIELD-INDUCED NONLINEAR BLOCH OSCILLATIONS AND DYNAMICAL LOCALIZATION SO PHYSICAL REVIEW LETTERS LA English DT Article ID SCHRODINGER-EQUATION; NONUNIFORM MEDIA; SUPERLATTICES; PARTICLE; SOLITONS; LATTICE; CHAOS C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. UNIV SALERNO,DEPT THEORET PHYS,I-84100 BARONISSI,ITALY. RP CAI, D (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. RI Salerno, Mario/B-1732-2012 OI Salerno, Mario/0000-0002-1443-7858 NR 31 TC 69 Z9 70 U1 1 U2 6 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 FEB 13 PY 1995 VL 74 IS 7 BP 1186 EP 1189 DI 10.1103/PhysRevLett.74.1186 PG 4 WC Physics, Multidisciplinary SC Physics GA QG472 UT WOS:A1995QG47200037 ER PT J AU FENDRICH, JA KWOK, WK GIAPINTZAKIS, J VANDERBEEK, CJ VINOKUR, VM FLESHLER, S WELP, U VISWANATHAN, HK CRABTREE, GW AF FENDRICH, JA KWOK, WK GIAPINTZAKIS, J VANDERBEEK, CJ VINOKUR, VM FLESHLER, S WELP, U VISWANATHAN, HK CRABTREE, GW TI VORTEX LIQUID-STATE IN AN ELECTRON-IRRADIATED UNTWINNED YBA2CU3O7-DELTA CRYSTAL SO PHYSICAL REVIEW LETTERS LA English DT Article ID HIGH-TC SUPERCONDUCTORS; SINGLE-CRYSTALS; GLASS SUPERCONDUCTIVITY; FLUX-LATTICE; PHASE; DEFECTS C1 ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCTIV,ARGONNE,IL 60439. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801. UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801. UNIV ILLINOIS,SCI & TECHNOL CTR SUPERCONDUCT,URBANA,IL 61801. RP FENDRICH, JA (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 22 TC 143 Z9 143 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 FEB 13 PY 1995 VL 74 IS 7 BP 1210 EP 1213 DI 10.1103/PhysRevLett.74.1210 PG 4 WC Physics, Multidisciplinary SC Physics GA QG472 UT WOS:A1995QG47200043 ER PT J AU VANDERBEEK, CJ KONCZYKOWSKI, M VINOKUR, VM LI, TW KES, PH CRABTREE, GW AF VANDERBEEK, CJ KONCZYKOWSKI, M VINOKUR, VM LI, TW KES, PH CRABTREE, GW TI VORTEX LINE PINNING AND BOSE-GLASS DYNAMICS IN HEAVY-ION IRRADIATED BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS SO PHYSICAL REVIEW LETTERS LA English DT Article ID JOSEPHSON-COUPLED SYSTEMS; FIELDS; SUPERCONDUCTOR; DEFECTS C1 ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCTIV,ARGONNE,IL 60439. ECOLE POLYTECH,SOLIDES IRRADIES LAB,F-91128 PALAISEAU,FRANCE. LEIDEN UNIV,KAMERLINGH ONNES LAB,2300 RA LEIDEN,NETHERLANDS. RP VANDERBEEK, CJ (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 16 TC 104 Z9 104 U1 1 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 FEB 13 PY 1995 VL 74 IS 7 BP 1214 EP 1217 DI 10.1103/PhysRevLett.74.1214 PG 4 WC Physics, Multidisciplinary SC Physics GA QG472 UT WOS:A1995QG47200044 ER PT J AU CARLISLE, JA SHIRLEY, EL HUDSON, EA TERMINELLO, LJ CALLCOTT, TA JIA, JJ EDERER, DL PERERA, RCC HIMPSEL, FJ AF CARLISLE, JA SHIRLEY, EL HUDSON, EA TERMINELLO, LJ CALLCOTT, TA JIA, JJ EDERER, DL PERERA, RCC HIMPSEL, FJ TI PROBING THE GRAPHITE BAND-STRUCTURE WITH RESONANT SOFT-X-RAY FLUORESCENCE SO PHYSICAL REVIEW LETTERS LA English DT Article ID EXCITATION-ENERGY DEPENDENCE; SCATTERING; EMISSION; SI C1 UNIV TENNESSEE,KNOXVILLE,TN 37996. TULANE UNIV,NEW ORLEANS,LA 70118. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598. RP CARLISLE, JA (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551, USA. NR 16 TC 145 Z9 147 U1 2 U2 13 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 FEB 13 PY 1995 VL 74 IS 7 BP 1234 EP 1237 DI 10.1103/PhysRevLett.74.1234 PG 4 WC Physics, Multidisciplinary SC Physics GA QG472 UT WOS:A1995QG47200049 ER PT J AU MIASKIEWICZ, K MILLER, JH FUCIARELLI, AF AF MIASKIEWICZ, K MILLER, JH FUCIARELLI, AF TI THEORETICAL-ANALYSIS OF DNA INTRASTRAND CROSS-LINKING BY FORMATION OF 8,5'-CYCLODEOXYADENOSINE SO NUCLEIC ACIDS RESEARCH LA English DT Article ID PLESSET PERTURBATION-THEORY; RADICAL-INDUCED FORMATION; IRREGULAR NUCLEIC-ACIDS; IMMUNOCHEMICAL ASSAY; SPIN ANNIHILATION; FURANOSE RING; 8,5'-CYCLOADENOSINE; DEFINITION; RELEASE; DAMAGE AB Formation of intramolecular cross links by addition of C(5') deoxyribose radicals to the C(8)-N(7) double bond of an attached adenine base was analyzed by ab initio quantum-chemical methods. Conformational preferences that influence the stereospecificity of the reaction were investigated. A good correlation was found between the ratio of experimental yields of R and S stereoisomers of 8,5'-cyclodeoxyadenosine and the relative energy of conformations of the C(5') radical that are precursors to these isomers. Molecular mechanics based on the AMBER force field was used to model the effect of 8,5'-cyclodeoxyadenosine on the conformation of the DNA dodecamer d(CGCGAATTCGCG)(2) with the lesion at the A6 position. The R and S stereoisomers of the intrastrand cross link cause comparable levels of DNA distortion with the major conformational changes occurring in backbone torsional angles at the site of the lesion. C1 PACIFIC NW LAB, DEPT BIOL & CHEM, RICHLAND, WA 99352 USA. PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, RICHLAND, WA 99352 USA. NR 28 TC 31 Z9 31 U1 2 U2 4 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD FEB 11 PY 1995 VL 23 IS 3 BP 515 EP 521 DI 10.1093/nar/23.3.515 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QK646 UT WOS:A1995QK64600029 PM 7885848 ER PT J AU KORATKAR, A DEUSTUA, SE HECKMAN, T FILIPPENKO, AV HO, LC RAO, M AF KORATKAR, A DEUSTUA, SE HECKMAN, T FILIPPENKO, AV HO, LC RAO, M TI LOW-LUMINOSITY ACTIVE GALAXIES - ARE THEY SIMILAR TO SEYFERT-GALAXIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, ACTIVE; GALAXIES, NUCLEI; GALAXIES, SEYFERT; X-RAYS, GALAXIES ID X-RAY OBSERVATIONS; GALACTIC NUCLEI; OPTICAL SPECTROPHOTOMETRY; EXCITATION MECHANISM; SPECTROSCOPIC SURVEY; SPIRAL GALAXIES; LINE REGION; CONTINUUM; SPECTRA; QUASARS AB A careful X-ray study of five low-luminosity active galactic nuclei (LLAGNs) was conducted to address specifically the issue of whether the dominant X-ray production mechanism is the same at all luminosities in AGNs. The sample consists of three Seyfert 1 galaxies (NGC 4639, NGC 5033, and NGC 5273), and two low-ionization nuclear emission-line regions (NGC 3642 and NGC 4278) having a weak, broad component of Ha emission. We find that the X-ray emission (ROSAT HRI) is mostly or entirely nuclear (less than or similar to 500 pc) despite the low X-ray luminosities (similar to 9 x 10(40) ergs s(-1)) of the sample. The correlation between X-ray luminosity and the broad H alpha emission-line luminosity observed in high-luminosity active galaxies continues down to the low-luminosity range; the mean L(X)/L(H alpha) ratio of LLAGNs is approximately 14, while that of AGNs is approximately 29. ROSAT PSPC observations of three LLAGNs in our sample indicate that the 0.2-2.2 keV X-ray spectral energy distributions are similar to those seen in Seyfert nuclei but do not have high intrinsic absorbing columns. Using existing ultraviolet data for four LLAGNs, we find that the ''optical'' (2500 Angstrom) to X-ray spectral index (alpha(OX)) has an average upper limit of 1.6; for comparison, the measured value in AGNs is typically 1.4, while that in M81 (the prototypical LLAGN) is 1.0. C1 LAWRENCE LIVERMORE NATL LAB, INST GEOPHYS & PLANETARY PHYS, LIVERMORE, CA 94550 USA. RP KORATKAR, A (reprint author), SPACE TELESCOPE SCI INST, 3700 SAN MARTIN DR, BALTIMORE, MD 21218 USA. NR 54 TC 68 Z9 68 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 10 PY 1995 VL 440 IS 1 BP 132 EP 140 DI 10.1086/175255 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QE505 UT WOS:A1995QE50500014 ER PT J AU RAYMOND, JC MAUCHE, CW BOWYER, S HURWITZ, M AF RAYMOND, JC MAUCHE, CW BOWYER, S HURWITZ, M TI ORFEUS OBSERVATIONS OF AM HERCULIS SO ASTROPHYSICAL JOURNAL LA English DT Article DE BINARIES, CLOSE; STARS, INDIVIDUAL (AM HERCULIS); STARS, MAGNETIC FIELDS; ULTRAVIOLET, STARS; WHITE DWARFS ID HOPKINS ULTRAVIOLET TELESCOPE; WHITE-DWARF; MAGNETIC-FIELD; STARS; MODELS; EVOLUTION; SYSTEMS; ENERGY AB The ORFEUS telescope has observed AM Her in its high optical state at high spectral resolution in the 912-1176 A band. Spectra at two phases show O VI emission lines with a broad and narrow component structure similar to that of the optical emission lines. We find that the O VI lines are optically thick, and that the densities in the broad- and narrow-component regions differ by a factor of 100. The most puzzling aspect of the observations is the continuum, which is softer than expected, but does not show definite Lyman absorption lines. We discuss the implications for the ''soft X-ray excess'' of AM Her stars. C1 LAWRENCE LIVERMORE NATL LAB,EXPTL ASTROPHYS LAB,LIVERMORE,CA 94550. UNIV CALIF BERKELEY,CTR EUV ASTROPHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. RP RAYMOND, JC (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 42 TC 18 Z9 18 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 10 PY 1995 VL 440 IS 1 BP 331 EP 335 DI 10.1086/175274 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QE505 UT WOS:A1995QE50500033 ER PT J AU ULMER, A WIJERS, RAMJ FENIMORE, EE AF ULMER, A WIJERS, RAMJ FENIMORE, EE TI CONSTRAINTS ON THE GAMMA-RAY BURST LUMINOSITY FUNCTION FROM PIONEER-VENUS-ORBITER AND BATSE OBSERVATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, BURSTS; METHODS, DATA ANALYSIS; METHODS, STATISTICAL AB We examine the width of the gamma ray burst luminosity function through the distribution of GRB peak fluxes as detected by the Pioneer Venus Orbiter (PVO) and the Burst and Transient Source Experiment (BATSE). The strength of the analysis is greatly enhanced by using a merged catalog of peak fluxes from both instruments with good cross-calibration of their sensitivities. The range of peak fluxes is increased by approximately a factor of 20 relative to the BATSE catalog. Thus, more sensitive investigations of the log N - log P distribution are possible. We place constraints on the width of the luminosity function of gamma-ray bursts brighter than the BATSE completeness limit by comparing the intensity distribution in the merged catalog with those produced by a variety of spatial density and luminosity functions. For the models examined, 90% of the detectable bursts have peak luminosities within a range of 10, indicating that the peak luminosities of gamma-ray bursts span a markedly less wide range of values than many other of their measurable properties, We also discuss for which slopes of a power-law luminosity function the observed width is at the upper end of the constrained range. This is essential in determining the power-law slopes for which luminosity-duration correlations could be important. C1 UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP ULMER, A (reprint author), PRINCETON UNIV OBSERV,PEYTON HALL,PRINCETON,NJ 08544, USA. NR 10 TC 23 Z9 23 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 10 PY 1995 VL 440 IS 1 BP L9 EP L12 DI 10.1086/187748 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QE506 UT WOS:A1995QE50600003 ER PT J AU HORNER, DA CURTISS, LA DIETER, DM AF HORNER, DA CURTISS, LA DIETER, DM TI A THEORETICAL-STUDY OF THE ENERGETICS OF INSERTION OF DICARBON (C-2) AND VINYLIDENE INTO METHANE C-H BONDS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID GAUSSIAN-2 THEORY AB The insertion of dicarbon (C-2) and vinylidene into methane C-H bonds was studied using ab initio molecular orbital theory. The reactions are simple models for thin film diamond growth in which C-2 is the principal growth species. The results of this study suggest that reaction of C-2 with a diamond surface should be favorable energetically with small activation barriers. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 15 TC 29 Z9 29 U1 0 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 FEB 10 PY 1995 VL 233 IS 3 BP 243 EP 248 DI 10.1016/0009-2614(94)01426-V PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QG630 UT WOS:A1995QG63000008 ER PT J AU MITCHELL, DW ROCKWOOD, AL SMITH, RD AF MITCHELL, DW ROCKWOOD, AL SMITH, RD TI FREQUENCY-SHIFTS AND MODULATION EFFECTS DUE TO SOLENOIDAL MAGNETIC-FIELD INHOMOGENEITIES IN ION-CYCLOTRON MASS-SPECTROMETRY SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES LA English DT Article DE FOURIER TRANSFORM ION CYCLOTRON RESONANCE MASS SPECTROMETRY; FREQUENCY SHIFTS; ION DYNAMICS; MAGNETIC FIELD INHOMOGENEITIES; MAGNETIC MATERIALS ID PENNING TRAP; MOTION AB Solenoidal (i.e. axially symmetric) magnetic field inhomogeneities, which in addition have symmetry under the operation z --> -z are the most important to Fourier transform-ion cyclotron resonance (FT-ICR) mass spectrometry since they introduce frequency shifts at first-order in perturbation theory. Frequency shifts for all three fundamental modes are derived for the leading second-order and fourth-order solenoidal inhomogeneities without any restrictions on the initial conditions. The analytical frequency shifts agree very well with frequency shifts obtained from numerical trajectory calculations using the exact classical equations of motion. The effect of the inhomogeneity on the ion trajectory is solved analytically. For a strong magnetic bottle field, the cyclotron motion is frequency modulated at twice the z-oscillation frequency resulting in sidebands. However, the amplitude of these sidebands is neglibly small for typical inhomogeneity strengths. The effect of a magnetized ICR trap on the homogeneity of the magnetic field is studied by analytical methods. We find that the leading magnetic bottle field decreases as d-3, where d is the cylindrical ion trap diameter. C1 PACIFIC NW LAB, DEPT CHEM SCI, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 19 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-1176 J9 INT J MASS SPECTROM JI Int. J. Mass Spectom. Ion Process. PD FEB 10 PY 1995 VL 141 IS 2 BP 101 EP 116 DI 10.1016/0168-1176(94)04106-H PG 16 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA QJ786 UT WOS:A1995QJ78600002 ER PT J AU CORBETT, JD MICKOLS, WE MAESTRE, MF AF CORBETT, JD MICKOLS, WE MAESTRE, MF TI EFFECT OF HEMOGLOBIN CONCENTRATION ON NUCLEATION AND POLYMER FORMATION IN SICKLE RED-BLOOD-CELLS SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID S POLYMERIZATION; DELAY TIME; DEOXYGENATION; ERYTHROCYTES; SCATTERING; MECHANISM; KINETICS; GELATION; LIGHT; SHEAR AB We have used differential polarization imaging microscopy to measure the amount and orientation of aligned sickle hemoglobin polymer in quickly deoxygenated sickle red blood cells. Images of the angular orientation of the aligned polymer at each point in the cell allowed for determination of the inclination of individual domains, providing detailed information regarding the polymerization and elongation of sickle hemoglobin polymers ex vivo. We found that the number of aligned polymer domains increased with increasing mean cell hemoglobin concentration. Sickle and holly leaf-shaped cells contained single or few domains of aligned polymer, while more compact cells such as irreversibly sickled cells contained many domains. A new class of cells was discovered by examination of images of the angular orientation of aligned polymer, which contained a single central nucleation site, with growth of polymer occurring outward in all directions in a spherulite-like domain. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CHEM BIODYNAM LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV BIOL & MED,BERKELEY,CA 94720. FU NCRR NIH HHS [RR 01613]; NIAID NIH HHS [AI 08427]; NIGMS NIH HHS [GM 10840] NR 48 TC 14 Z9 14 U1 0 U2 2 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD FEB 10 PY 1995 VL 270 IS 6 BP 2708 EP 2715 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QF535 UT WOS:A1995QF53500049 PM 7852341 ER PT J AU LORENZ, M POOLE, KJV POPP, D ROSENBAUM, G HOLMES, KC AF LORENZ, M POOLE, KJV POPP, D ROSENBAUM, G HOLMES, KC TI AN ATOMIC MODEL OF THE UNREGULATED THIN FILAMENT OBTAINED BY X-RAY FIBER DIFFRACTION ON ORIENTED ACTIN-TROPOMYOSIN GELS SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE ACTIN-TROPOMYOSIN BINDING; X-RAY FIBER DIFFRACTION; ELECTROSTATIC INTERACTION; RADIAL AND AZIMUTHAL POSITION OF TROPOMYOSIN; ACTO-MYOSIN BINDING ID F-ACTIN; MYOSIN SUBFRAGMENT-1; ALPHA-TROPOMYOSIN; MUSCLE REGULATION; SKELETAL-MUSCLE; COMPLEX; TROPONIN; BINDING AB We present a model of the actin-tropomyosin complex in which the radial and azimuthal position of tropomyosin was adjusted to fit the X-ray fiber diffraction patterns from oriented actin-tropomysin gels at a resolution of 1/8 Angstrom(-1). We used the recently published atomic F-actin model for the calculations. The atomic model of tropomyosin was obtained by model-building a coiled coiled-coil structure from the tropomyosin sequence. The resulting atomic model is strongly preferred and shows strong electrostatic interactions between charged side-chains of tropomyosin residues and actin residues in subdomain 3 and subdomain 4. Furthermore, calculations of enthalpies based upon electrostatic interactions indicate that there is a favored rotational position of the tropomyosin core at the calculated azimuthal and radial position given by the X-ray refinement. Rotations of the tropomyosin strand out of this position turn strongly attractive electrostatic interactions into repulsive forces. The resulting binding radius of 39 Angstrom and the determined azimuthal position of tropomyosin are in good agreement with electron microscopy reconstructions and neutron diffraction experiments. Furthermore, the calculated position of tropomyosin would still partly block the rigor interaction of myosin cross-bridges with actin, whereas it very likely allows undisturbed binding of the cross-bridges in a weak binding state. C1 ARGONNE NATL LAB, CTR MECHANIST BIOL, CTR STRUCT BIOL, ARGONNE, IL 60439 USA. RP LORENZ, M (reprint author), MAX PLANCK INST MED RES, BIOPHYS ABT, JAHNSTR 29, D-69120 HEIDELBERG, GERMANY. FU NCRR NIH HHS [RR01633] NR 47 TC 171 Z9 171 U1 0 U2 1 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD FEB 10 PY 1995 VL 246 IS 1 BP 108 EP 119 DI 10.1006/jmbi.1994.0070 PG 12 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QF774 UT WOS:A1995QF77400013 PM 7853391 ER PT J AU LELOVIC, M KRISHNARAJ, P EROR, NG BALACHANDRAN, U AF LELOVIC, M KRISHNARAJ, P EROR, NG BALACHANDRAN, U TI MINIMUM CRITICAL-CURRENT DENSITY OF 10(5)-A/CM(2) AT 77-K IN THE THIN-LAYER OF BI(1.8)PB(0.4)SR(2.0)CA(2.2)CU(3.0)O(Y) SUPERCONDUCTOR NEAR THE AG IN AG-SHEATHED TAPES SO PHYSICA C LA English DT Article AB We report for the first time a minimum critical current density in a BSCCO/Ag polycrystalline sample of 1.1X10(5) A/cm(2) at 77 K in a self-field. For practical applications of(Bi, Pb)(2)Sr2Ca2Cu3Oy (BSCCO-2223) high-temperature superconducting material, the critical current density (J(c)) is a limiting factor. A requirement for a J(c) of 10(5) A/cm(2) in long length wires and tapes, at 77 K and high magnetic field, has been established. The transport J(c) were measured on samples that retained a 10 mu m thickness of the superconducting core after they were removed from rolled tapes. The thin superconducting layer region next to the silver sheath was shown to be the actual current carrying region in the tape. These results confirm the presence of a high critical current density region adjacent to the silver in silver-sheathed tapes, and provide a basis for further improvements in J(c). Regions of silver were also found to be present in the superconducting core. C1 UNIV PITTSBURGH,DEPT MAT SCI,PITTSBURGH,PA 15261. ARGONNE NATL LAB,DIV ENERGY TECHNOL,ARGONNE,IL 60439. NR 6 TC 67 Z9 67 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD FEB 10 PY 1995 VL 242 IS 3-4 BP 246 EP 250 DI 10.1016/0921-4534(94)02441-3 PG 5 WC Physics, Applied SC Physics GA QH297 UT WOS:A1995QH29700006 ER PT J AU BOUDREAU, N SYMPSON, CJ WERB, Z BISSELL, MJ AF BOUDREAU, N SYMPSON, CJ WERB, Z BISSELL, MJ TI SUPPRESSION OF ICE AND APOPTOSIS IN MAMMARY EPITHELIAL-CELLS BY EXTRACELLULAR-MATRIX SO SCIENCE LA English DT Article ID DEATH GENE CED-3; INVOLUTION; ENZYME; DIFFERENTIATION; GLYCOPROTEINS; PROTEINASES; COLLAGENASE; INHIBITION; SECRETION; ENCODES AB Apoptosis (programmed cell death) plays a major role in development and tissue regeneration. Basement membrane extracellular matrix (ECM), but not fibronectin or collagen, was shown to suppress apoptosis of mammary epithelial cells in tissue culture and in vivo. Apoptosis was induced by antibodies to beta(1) integrins or by overexpression of stromelysin-1, which degrades ECM. Expression of interleukin-1 beta converting enzyme (ICE) correlated with the loss of ECM, and inhibitors of ICE activity prevented apoptosis. These results suggest that ECM regulates apoptosis in mammary epithelial cells through an integrin-dependent negative regulation of ICE expression. C1 UNIV CALIF SAN FRANCISCO,RADIOBIOL & ENVIRONM HLTH LAB,SAN FRANCISCO,CA 94143. RP BOUDREAU, N (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV LIFE SCI,1 CYCLOTRON RD,BLDG 83,BERKELEY,CA 94720, USA. FU NCI NIH HHS [CA 57621, R01 CA057621, R01 CA057621-07]; NIEHS NIH HHS [ES 07106, T32 ES007106] NR 27 TC 1037 Z9 1066 U1 5 U2 18 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD FEB 10 PY 1995 VL 267 IS 5199 BP 891 EP 893 DI 10.1126/science.7531366 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QG207 UT WOS:A1995QG20700060 PM 7531366 ER PT J AU SCHOCHLIN, J BOHNEN, KP HO, KM AF SCHOCHLIN, J BOHNEN, KP HO, KM TI STRUCTURE AND DYNAMICS AT THE AL(111)-SURFACE SO SURFACE SCIENCE LA English DT Article DE ALUMINUM; DENSITY FUNCTIONAL CALCULATIONS; LOW INDEX SINGLE CRYSTAL SURFACES; PHONONS; SURFACE ELECTRONIC PHENOMENA; SURFACE ENERGY; SURFACE RELAXATION AND RECONSTRUCTION ID TOTAL-ENERGY CALCULATIONS; SURFACE PHONONS; 1ST-PRINCIPLES CALCULATION; ABINITIO CALCULATION; TRANSITION-METALS; ATOM-SCATTERING; FREQUENCIES; RELAXATION; AL(110); AL(100) AB Using first-principles total-energy calculations the lattice relaxation, surface energy, work function and surface phonons have been determined for the Al(111)-surface. The use of the Hellmann-Feynman theorem allows for a very efficient determination of equilibrium geometries and interplanar force constants. Results will be presented and compared with available experimental information as well as with other theoretical treatments. C1 KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH, INST NUKL FESTKORPERPHYS, D-76021 KARLSRUHE, GERMANY. US DOE, AMES LAB, AMES, IA 50011 USA. IOWA STATE UNIV SCI & TECHNOL, DEPT PHYS, AMES, IA 50011 USA. NR 37 TC 35 Z9 36 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 EI 1879-2758 J9 SURF SCI JI Surf. Sci. PD FEB 10 PY 1995 VL 324 IS 2-3 BP 113 EP 121 DI 10.1016/0039-6028(94)00710-1 PG 9 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA QG638 UT WOS:A1995QG63800007 ER PT J AU MILLS, G JONSSON, H SCHENTER, GK AF MILLS, G JONSSON, H SCHENTER, GK TI REVERSIBLE WORK TRANSITION-STATE THEORY - APPLICATION TO DISSOCIATIVE ADSORPTION OF HYDROGEN SO SURFACE SCIENCE LA English DT Article DE ADSORPTION KINETICS; CHEMISORPTION; COMPUTER SIMULATIONS; EQUILIBRIUM THERMODYNAMICS AND STATISTICAL MECHANICS; MODELS OF SURFACE CHEMICAL REACTIONS ID MONTE-CARLO METHOD; RATE CONSTANTS; VARIATIONAL OPTIMIZATION; QUANTUM SIMULATION; METAL-SURFACES; DYNAMICS; DIFFUSION; PATH; H-2; NI AB A practical method for finding free energy barriers for transitions in high-dimensional classical and quantum systems is presented and used to calculate the dissociative sticking probability of H-2 On a metal surface within the transition state theory, The reversible work involved in shifting the system confined to a hyperplane from the reactant region towards products is evaluated directly. Quantum mechanical degrees of freedom are included by using Feynman path integrals with the hyperplane constraint applied to the centroid of the cyclic paths. An optimal dividing surface for the rate estimated by the transition state theory is identified naturally in the course of the reversible work evaluation. The free energy barrier is determined relative to the reactant state directly so that an estimate of the transition rate can be obtained without requiring a solvable reference model for the transition state. The method has been applied to calculations of the sticking probability of a thermalized hydrogen gas on a Cu(110) surface. The two hydrogen atoms and eight surface Cu atoms were included quantum mechanically and over two hundred atoms in the Cu crystal where included classically. The activation energy for adsorption and desorption was determined and found to be significantly lowered by tunneling at low temperature. The calculated values agree quite well with experimental estimates for adsorption and desorption. Dynamical corrections to the classical transition state theory rate estimate were evaluated and found to be small. C1 UNIV WASHINGTON, DEPT CHEM, SEATTLE, WA 98195 USA. PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. RI Jonsson, Hannes/G-2267-2013; Schenter, Gregory/I-7655-2014 OI Jonsson, Hannes/0000-0001-8285-5421; Schenter, Gregory/0000-0001-5444-5484 NR 59 TC 1136 Z9 1141 U1 20 U2 199 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD FEB 10 PY 1995 VL 324 IS 2-3 BP 305 EP 337 DI 10.1016/0039-6028(94)00731-4 PG 33 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA QG638 UT WOS:A1995QG63800024 ER PT J AU SNYDER, F AF SNYDER, F TI PLATELET-ACTIVATING-FACTOR AND ITS ANALOGS - METABOLIC PATHWAYS AND RELATED INTRACELLULAR PROCESSES SO BIOCHIMICA ET BIOPHYSICA ACTA-LIPIDS AND LIPID METABOLISM LA English DT Review DE PLATELET-ACTIVATING FACTOR; PAF METABOLISM; INTRACELLULAR PROCESSES; PAF ENZYME; PAF ANALOG ID HUMAN POLYMORPHONUCLEAR LEUKOCYTES; ACETYL-COA ACETYLTRANSFERASE; FACTOR ACETYLHYDROLASE ACTIVITY; FACTOR PAF-ACETHER; HUMAN DECIDUAL MACROPHAGES; LOW-DENSITY LIPOPROTEIN; RAT SPLEEN MICROSOMES; PROTEIN-KINASE-C; ARACHIDONOYL-HYDROLYZING PHOSPHOLIPASE-A2; PLASMALOGEN-SELECTIVE PHOSPHOLIPASE-A2 RP OAK RIDGE ASSOCIATED UNIV, OAK RIDGE INST SCI & EDUC, DIV MED SCI, POB 117, OAK RIDGE, TN 37831 USA. FU NHLBI NIH HHS [HL27109-13A1, HL35495]; NIDDK NIH HHS [R01 DK42804-0341] NR 272 TC 157 Z9 160 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0005-2760 J9 BBA-LIPID LIPID MET JI Biochim. Biophys. Acta-Lipids Lipid Metab. PD FEB 9 PY 1995 VL 1254 IS 3 BP 231 EP 249 DI 10.1016/0005-2760(94)00192-2 PG 19 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA QG277 UT WOS:A1995QG27700001 PM 7857964 ER PT J AU BLANK, ML SMITH, ZL FITZGERALD, V SNYDER, F AF BLANK, ML SMITH, ZL FITZGERALD, V SNYDER, F TI THE COA-INDEPENDENT TRANSACYLASE IN PAF BIOSYNTHESIS - TISSUE DISTRIBUTION AND MOLECULAR-SPECIES SELECTIVITY SO BIOCHIMICA ET BIOPHYSICA ACTA-LIPIDS AND LIPID METABOLISM LA English DT Article DE ACETYLTRANSFERASE; LYSO-PAF; PAF; PLATELET ACTIVATING FACTOR; PLASMALOGEN; TRANSACYLASE ID PLATELET-ACTIVATING-FACTOR; HUMAN NEUTROPHILS; HL-60 CELLS; PATHWAY; PHOSPHOLIPIDS; ETHANOLAMINE; ARACHIDONATE; METABOLISM; MICROSOMES; 1-ALKYL-2-ACETYL-SN-GLYCERO-3-PHOSPHOCHOLINE AB Microsomal membranes from six different rat tissues (spleen, lung, kidney, brain, testis, and liver) were found to possess CoA-independent transacylase activity that could both acylate lyso-[H-3]PAF (1-[H-3]hexadecyl-2-lyso-sn-glycero-3-phosphocholine) and then deacylate the 1-[H-3]hexadecyl-2-acyl-sn-glycero-3-phosphocholine product via the transacylation of added exogenous 1-alk-1'-enyl-2-lyso-sn-glycero-3-phosphoethanolamine. Platelet-activating factor (1-[H-3]hexadecyl-2-acetyl-sn-glycero-3-phosphocholine) was produced when acetyl-CoA was added to the spleen microsomes during generation of lyso-[H-3]PAF by the transacylases. More extensive studies with subcellular fractions from spleen revealed that, in addition to microsomes, the transacylase activities were also present in the 15 000 X g membrane fraction but not in the cytosol. Analysis of molecular species of 1-[H-3]hexadecyl-2-acyl-sn-glycero-3-phosocholine before and after addition of 1-alk-1'-enyl-2-lyso-sn-glycero-3-phosphoethanolamine as the acyl acceptor demonstrated a high selectivity for polyunsaturated fatty acids (> 3 double bonds/acyl group) in both the acylation and deacylation processes that occurred in testicular microsomal membranes. The transfer of acyl groups by the transacylase appeared to be equally effective for either arachidonic or docosapentaenoic(n - 6) fatty acids, whereas linoleic and oleic fatty acids were not transferred from 1-[H-3]hexadecyl-2-acyl-sn-glycero-3-phosphocholine following the addition of 1-alk-1'-eny-2-lyso-sn-glycero-3-phosphoethanolamine. Similar experiments with the membrane fraction of undifferentiated HL-60 cells showed that arachidonic acid supplementation of intact cells enhanced both the CoA-independent transacylation of lyso-[H-3]PAF and the subsequent deacylation of 1-[H-3]hexadecyl-2-acyl-sn-glycero-3-phosjphocholine caused by addition of 1-alk-1'-enyl-2-acyl-sn-glycero-3--phosphoethanolamine. Differentiation of the HL-60 cells into a neutrophil-like form had no effect on the transacylase activity. Our results indicate the PAF-related transacylase is widely distributed among tissues and, although highly selective for polyunsaturated acyl groups, does not discriminate selectively among the polyunsaturates. C1 OAK RIDGE ASSOCIATED UNIV,OAK RIDGE INST SCI & EDUC,DIV MED SCI,OAK RIDGE,TN 37831. FU NHLBI NIH HHS [HL27109-13A1] NR 25 TC 22 Z9 24 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0005-2760 J9 BBA-LIPID LIPID MET JI Biochim. Biophys. Acta-Lipids Lipid Metab. PD FEB 9 PY 1995 VL 1254 IS 3 BP 295 EP 301 DI 10.1016/0005-2760(94)00189-6 PG 7 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA QG277 UT WOS:A1995QG27700007 PM 7857969 ER PT J AU KLOTS, CE DEHMER, PM JOHNSON, MA AF KLOTS, CE DEHMER, PM JOHNSON, MA TI A SCIENTIFIC APPRECIATION SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Item About an Individual C1 ARGONNE NATL LAB,ARGONNE,IL 60439. YALE UNIV,DEPT CHEM,STERLING CHEM LAB,NEW HAVEN,CT 06511. RP KLOTS, CE (reprint author), OAK RIDGE NATL LAB,CHEM PHYS SECT,POB 2008,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1620 EP 1621 PG 2 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700001 ER PT J AU ARNOLD, CC NEUMARK, DM CYR, DM JOHNSON, MA AF ARNOLD, CC NEUMARK, DM CYR, DM JOHNSON, MA TI NEGATIVE-ION ZERO ELECTRON KINETIC-ENERGY SPECTROSCOPY OF I-CENTER-DOT-CH3I SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID THRESHOLD PHOTODETACHMENT SPECTROSCOPY; LOWEST EXCITED-STATES; PHOTOELECTRON-SPECTROSCOPY; RESOLUTION; SCATTERING; I-.CH3I; COMPLEX; SYSTEMS; CH3I; BEAM AB The negative ion zero electron kinetic energy (ZEKE) spectrum of I-.CH3I is presented and discussed. In addition to the high-frequency vibrational structure previously seen in the photoelectron spectrum (PES) of I-.CH3I, the ZEKE spectrum reveals low-frequency vibrational structure due to excitation in two van der Waals modes in the ground (X) state of the neutral I.CH3I complex. Of the two other excited states of the neutral complex, the I state is not distinctly observed, and no vibrational structure due to van der Waals motion is observed for the II state. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DEPT CHEM,DIV CHEM SCI,BERKELEY,CA 94720. YALE UNIV,DEPT CHEM,STERLING CHEM LAB,NEW HAVEN,CT 06511. RI Neumark, Daniel/B-9551-2009 OI Neumark, Daniel/0000-0002-3762-9473 NR 28 TC 29 Z9 29 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1633 EP 1636 DI 10.1021/j100006a002 PG 4 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700003 ER PT J AU DEHMER, PM CHUPKA, WA AF DEHMER, PM CHUPKA, WA TI RYDBERG STATE REACTIONS OF ATOMIC AND MOLECULAR-HYDROGEN SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID QUANTUM-DEFECT THEORY; PHOTOELECTRON ANGULAR-DISTRIBUTIONS; ROTATIONAL-VIBRATIONAL PREIONIZATION; HIGH-RESOLUTION; ABSORPTION-SPECTRUM; TRIATOMIC HYDROGEN; EMISSION-SPECTRUM; BRANCHING RATIO; CROSS-SECTIONS; H-2 AB Various aspects of the atomic and molecular Rydberg state reactions that result in H-3(+) formation by associative ionization [H*(n = 2) + H-2 --> H-3(+) + e] and by chemiionization [H-2* + H-2 --> H-3(+) + H + e] are presented. For associative ionization, the n = 2 Rydberg state of atomic hydrogen was prepared both by direct photodissociation of H-2 and D-2 into the continuum above the first dissociation limit and by predissociation of H-2 Rydberg states. The most dramatic result of the associative ionization study was the observation of oscillations in the ionization cross section for the reaction involving atoms formed by direct photodissociation. These oscillations arise as a result of a quantum interference effect between two dissociation paths leading to the same final state. The experimental data are presented here with new calculations of this effect by M. Glass-Maujean. For chemiionization, the np sigma and np pi Rydberg states of molecular hydrogen were prepared by photoabsorption of a liquid-nitrogen-temperature sample of similar to 90-95% pure para-H-2; these sample conditions enabled the study of the ion yield of the chemiionization reaction for principal quantum numbers in the range 3-17. The ion yield for n = 3 was zero; the yields for n greater than or equal to 4 increased by many orders of magnitude approximately as n(6) over a rather small range of n and quickly approached that for the analogous ion-molecule reaction. Both the n dependence of the ion yield and the value of n for which the ion yield becomes constant are qualitatively explained by a two-step mechanism for chemiionization involving an ion-molecule reaction of the Rydberg state core (with the Rydberg electron acting as a spectator) followed by autoionization of H-3* to form H-3(+). At least three factors combine to determine the onset of the high-n regime. These are (1) the relative rates of radiative decay of H-2* and collision of H-2*, (2) shielding of the H-3+ ion core by the Rydberg electron at low principal quantum numbers, and (3) the value of the principal quantum number at which rapid decay of the H-3* intermediate by rotational autoionization becomes energetically allowed. C1 YALE UNIV, STERLING CHEM LAB, NEW HAVEN, CT 06511 USA. RP ARGONNE NATL LAB, 9700 S CASS AVE, ARGONNE, IL 60439 USA. NR 84 TC 12 Z9 12 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1686 EP 1699 DI 10.1021/j100006a010 PG 14 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700011 ER PT J AU JUNGEN, C PRATT, ST ROSS, SC AF JUNGEN, C PRATT, ST ROSS, SC TI MULTICHANNEL QUANTUM-DEFECT THEORY AND DOUBLE-RESONANCE SPECTROSCOPY OF AUTOIONIZING LEVELS OF MOLECULAR-HYDROGEN SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID PHOTOELECTRON ANGULAR-DISTRIBUTIONS; VIBRATIONAL BRANCHING RATIOS; NP RYDBERG STATES; DYNAMIC COUPLING PHENOMENA; HIGH-LYING STATES; ROTATIONAL AUTOIONIZATION; HIGH-RESOLUTION; EXCITED-STATES; ELECTRIC-FIELD; ENERGY-LEVELS AB Multichannel quantum defect theory has been used to calculate vibrational and rotational branching ratios in the photoionization of H-2 excited to the E,F (1) Sigma(g)(+) state. The calculations take into account the interaction with doubly excited channels in the E,F (1) Sigma(g)(+) lower state, the energy and R dependence of the transition to the upper state, and the rovibronic channel interactions in the final states. The input data consist of the ionic potential energy curves and the known R-dependent quantum defects for the gerade and ungerade channels of H-2. All these parameters are used without adjustment. The theoretical results are compared with the results of earlier double-resonance experiments. This detailed comparison shows that the R dependence of the transition dipole moments has considerable influence on the resonance profiles and the branching ratios. The overall agreement with the experimental results is excellent, and most of the observed discrepancies can be accounted for by the competing decay processes of predissociation and fluorescence, which were not included in the calculations. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV NEW BRUNSWICK,DEPT PHYS,FREDERICTON,NB E3B 5A3,CANADA. RP JUNGEN, C (reprint author), LAB AIMEE COTTON,BATIMENT 505,F-91405 ORSAY,FRANCE. NR 73 TC 40 Z9 40 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1700 EP 1710 DI 10.1021/j100006a011 PG 11 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700012 ER PT J AU HUANG, J CARMAN, HS COMPTON, RN AF HUANG, J CARMAN, HS COMPTON, RN TI LOW-ENERGY-ELECTRON ATTACHMENT TO C-60 SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID HIGHLY EXCITED ATOMS; HIGH RYDBERG STATES; RATE CONSTANTS; ICOSAHEDRAL C-60; XENON ATOMS; HIGH-N; MOLECULES; IONIZATION; C60; BUCKMINSTERFULLERENE AB The attachment of low-energy electrons to C-60 is studied using crossed beam reactions between an effusive beam of C-60 molecules and either a monochromatic beam of low-energy electrons or a beam of highly excited Rydberg atoms. A low-energy threshold (similar to 0.15 +/- 0.05 eV) for the attachment of free electrons is observed, indicating that s-wave capture is absent, in agreement with theoretical predictions. Resonance structures at 0.2, 1.5, 4.5, 5.5, and 8 eV are attributed to electron attachment into higher electronic states of the manifold of negative ion states of C-60. In contrast, the charge-exchange reaction rate between high Rydberg (np) alkali atoms and C-60 exhibits an n dependence similar to that observed for SF6 (s-wave capture) but has a somewhat smaller attachment rate constant. The apparent conflict between slow free electron attachment and the charge transfer data is attributed to the fact that the electric field arising from the ion core of the Rydberg atom breaks the symmetry of the electron/molecule collision, allowing direct attachment into the ground state of the negative ion with no angular momentum barrier. C1 OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37831. UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104. UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. NR 64 TC 89 Z9 89 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1719 EP 1726 DI 10.1021/j100006a013 PG 8 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700014 ER PT J AU KLOTS, CE AF KLOTS, CE TI FINAL-STATE DISTRIBUTIONS FROM UNIMOLECULAR REACTIONS - IMPLICATIONS OF A GENERAL THEOREM SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID PHASE SPACE THEORY; ANGULAR-MOMENTUM; DISSOCIATION DYNAMICS; POLYATOMIC SYSTEMS; ENERGY; IONS; KINETICS AB A recently derived theorem connects the final state distribution following unimolecular decomposition of an isolated molecule with that which one might measure in a heat bath. The ramifications of this relation and technical aspects of its implementation are examined here. Useful relations for rotational and kinetic energy distributions are derived. Expressions for the energy and angular momentum dependence of branching ratios are presented. RP KLOTS, CE (reprint author), OAK RIDGE NATL LAB,CHEM PHYS SECT,POB 2008,OAK RIDGE,TN 37831, USA. NR 26 TC 9 Z9 9 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1748 EP 1753 DI 10.1021/j100006a017 PG 6 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700018 ER PT J AU HSU, CW LIAO, CL MA, ZX NG, CY AF HSU, CW LIAO, CL MA, ZX NG, CY TI DIRECT IDENTIFICATION OF PHOTOFRAGMENT STRUCTURES FORMED IN THE 193-NM PHOTODISSOCIATION OF THIOPHENE SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID GAS-PHASE; DEWAR THIOPHENE; SULFUR-ATOMS; FURAN; CS2; PHOTOIONIZATION; DISSOCIATION; IONIZATION; CLUSTERS; SINDO1 AB An experimental scheme which involves vacuum ultraviolet photoionization mass spectrometric sampling of laser photodissociation products in a pulsed supersonic molecular beam has been used to identify the isomeric structures of the 193 nm photofragments from thiophene. The primary products observed are vinylacetylene (H2C=CH-C=CH), acetylene (C2H2), and thioketene (H2C=C=S). Using the 2 + 1 resonance-enhanced multiphoton (REMPI) scheme, we find that S atoms are produced predominantly (greater than or equal to 96%) in P-3(J) states with a fine structure distribution of P-3(2):P-3(1):P-3(0) = 0.82 +/- 0.03:0.15 +/- 0.03:0.03 +/- 0.03. These experimental results indicate that the major dissociation channels are CH2=CH-C=CH + S(P-3) and CH=CH + CH2=C=S. Ab initio multiconfiguration self-consistent-field calculations have been made to rationalize these experimental observations. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 55 TC 17 Z9 17 U1 3 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1760 EP 1767 DI 10.1021/j100006a019 PG 8 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700020 ER PT J AU DESAI, SR FEIGERLE, CS MILLER, JC AF DESAI, SR FEIGERLE, CS MILLER, JC TI LASER-INDUCED POLYMERIZATION WITHIN CARBON-DISULFIDE CLUSTERS SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID ION-MOLECULE REACTIONS; BEAM PHOTO-IONIZATION; MULTIPHOTON IONIZATION; CATIONIC POLYMERIZATION; VANDERWAALS CLUSTERS; UNIMOLECULAR DECOMPOSITION; CS2 CLUSTERS; 193 NM; PHOTODISSOCIATION; SULFIDE AB ''Laser snow'' or laser-induced clustering describes a process whereby laser irradiation of a moderate- to high-pressure molecular gas results in the visible precipitation of particulates. We report a molecular beam analog of laser snow where photochemical polymerization occurs within molecular clusters rather than via a collisional mechanism. Clusters of CS2 are formed in a supersonic expansion with argon and photoionized by two-photon absorption of 239.53 nm photons. Various ionic photoproducts such as S-m(+), S-m(+)(CS2)(n), (CS)(m)(+), and (CS2)(m)(+) clusters are detected by mass spectrometry. A cycle of ion-molecule reactions occurring entirely within an isolated molecular cluster is proposed to explain the observed ions. C1 OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. NR 52 TC 27 Z9 27 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 9 PY 1995 VL 99 IS 6 BP 1786 EP 1791 DI 10.1021/j100006a022 PG 6 WC Chemistry, Physical SC Chemistry GA QG507 UT WOS:A1995QG50700023 ER PT J AU HOFFMAN, DC AF HOFFMAN, DC TI PERIODIC-TABLE - 110,111...AND COUNTING SO NATURE LA English DT Editorial Material C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. RP HOFFMAN, DC (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. NR 2 TC 2 Z9 2 U1 0 U2 0 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD FEB 9 PY 1995 VL 373 IS 6514 BP 471 EP 472 DI 10.1038/373471a0 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QF724 UT WOS:A1995QF72400031 ER PT J AU SCHNEDERMANN, E BALTZ, AJ DOVER, CB AF SCHNEDERMANN, E BALTZ, AJ DOVER, CB TI ON THE PRODUCTION OF PINEUTS IN RELATIVISTIC HEAVY-ION COLLISIONS SO PHYSICS LETTERS B LA English DT Article ID NN BOUND-STATE; DIBARYON RESONANCES; NEGATIVE PIONS; SEARCH; NEUTRONS; DEUTERON AB Using a realistic event generator for heavy ion collisions we have estimated the production rates for ''pineuts'', hypothetical bound states of negative pions and neutrons. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP SCHNEDERMANN, E (reprint author), SUNY STONY BROOK,STONY BROOK,NY 11794, USA. NR 25 TC 2 Z9 2 U1 0 U2 0 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 FEB 9 PY 1995 VL 345 IS 2 BP 119 EP 123 DI 10.1016/0370-2693(94)01536-L PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QG310 UT WOS:A1995QG31000001 ER PT J AU WESTRE, TE DICICCO, A FILIPPONI, A NATOLI, CR HEDMAN, B SOLOMON, EI HODGSON, KO AF WESTRE, TE DICICCO, A FILIPPONI, A NATOLI, CR HEDMAN, B SOLOMON, EI HODGSON, KO TI GNXAS, A MULTIPLE-SCATTERING APPROACH TO EXAFS ANALYSIS - METHODOLOGY AND APPLICATIONS TO IRON COMPLEXES SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID X-RAY-ABSORPTION; NEAR-EDGE STRUCTURE; FINE-STRUCTURE; K-EDGE; SPECTRA; SPECTROSCOPY; MOLECULES; HEMERYTHRIN; EXPANSION; CLUSTERS AB GNXAS, a recently developed integrated approach to the analysis of EXAFS data is presented in detail. GNXAS provides for the direct fitting of theoretical signals (calculated by utilizing the Hedin-Lundqvist complex exchange and correlation potential and spherical wave propagators) to the experimental data. GNXAS is able to calculate all the signals related to two-, three-, and four-atom correlation functions with the proper treatment of correlated distances and Debye-Waller factors. The technique is particularly well-suited for the analysis of multiple-scattering effects and thus allows for accurate determination of bond distance and angular information of second and third neighbors. Herein we report the application of GNXAS to several chemical systems of known structure. The reliability of GNXAS was evaluated on a well-ordered inorganic complex, Fe(acac)(3), as well as a lower-symmetry coordination complex with mixed ligation, Na[Fe(OH2)EDTA]. The total EXAFS signal generated by GNXAS matches closely the experimental data for both complexes, especially when all the multiple-scattering contributions were included in the theoretical signal. First neighbor distances obtained from refinement using GNXAS, as well as distances and angles for further neighbors, compared very well with crystallographic values. The angle dependence of the Fe-C-N multiple-scattering contribution in K3Fe(CN)(6) was also examined. The results indicate that GNXAS can be used to determine angles relatively accurately for Fe-C-N configurations with angles greater than about 150 degrees. These results establish the utility and reliability of the GNXAS approach and provide a reliable means to determine additional structural information from EXAFS analysis of structures of chemical interest. C1 STANFORD UNIV,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94305. UNIV CAMERINO,DIPARTIMENTO MATEMAT & FIS,I-62032 CAMERINO,ITALY. UNIV AQUILA,DIPARTIMENTO FIS,I-67010 COPPITO,ITALY. IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY. RP WESTRE, TE (reprint author), STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305, USA. RI Filipponi, Adriano/P-7796-2015 OI Filipponi, Adriano/0000-0002-3870-5853 NR 69 TC 47 Z9 47 U1 0 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 8 PY 1995 VL 117 IS 5 BP 1566 EP 1583 DI 10.1021/ja00110a012 PG 18 WC Chemistry, Multidisciplinary SC Chemistry GA QF536 UT WOS:A1995QF53600012 ER PT J AU TAWA, GJ PRATT, LR AF TAWA, GJ PRATT, LR TI THEORETICAL CALCULATION OF THE WATER ION PRODUCT K-W SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID BORN MODEL; ELECTROSTATIC INTERACTION; INTERACTION ENERGY; TITRATION CURVES; IONIZABLE GROUPS; PROTEINS; HYDRATION; CONTINUUM; SOLVATION; SURFACE AB A dielectric solvation model is applied to the prediction of the equilibrium ionization of liquid water over a wide range of density and temperature with the objective of calibrating that model for the study of ionization in water of organic acids, e.g., proteins and nucleic acids. The model includes an approximate description of the polarizability of the dissociating water molecule. The calculated pK(W) are very sensitive to the value of the radii that parametrize the model. The radii required for the spherical molecular volumes of the water molecule in order to fit the experimental ion product are presented and discussed. These radii are larger than those commonly used. They decrease with increasing density as would be guessed but the rate of decrease is slight. They increase with increasing temperature, a variation opposite to what would be guessed if radii were strictly viewed as a distance of closest approach. The molecular theoretical principles that might provide an explanation of the thermodynamic state dependence of these radii are discussed. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RI Pratt, Lawrence/H-7955-2012 OI Pratt, Lawrence/0000-0003-2351-7451 NR 48 TC 36 Z9 36 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 8 PY 1995 VL 117 IS 5 BP 1625 EP 1628 DI 10.1021/ja00110a019 PG 4 WC Chemistry, Multidisciplinary SC Chemistry GA QF536 UT WOS:A1995QF53600019 ER PT J AU KENNEY, JW CLYMIRE, JW AGNEW, SF AF KENNEY, JW CLYMIRE, JW AGNEW, SF TI CHANGE FROM FLUORESCENCE TO PHOSPHORESCENCE AND TUNING THE PSEUDO-JAHN-TELLER EFFECT WITH PRESSURE FOR (NH4)(3)[CRF6] SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note ID DIAMOND-ANVIL CELL; RUBY C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545. RP KENNEY, JW (reprint author), EASTERN NEW MEXICO UNIV,DEPT PHYS SCI,PHYS CHEM LAB,PORTALES,NM 88130, USA. NR 24 TC 7 Z9 7 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 8 PY 1995 VL 117 IS 5 BP 1645 EP 1646 DI 10.1021/ja00110a024 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA QF536 UT WOS:A1995QF53600024 ER PT J AU SINCLAIR, MB GOURLEY, PL BRENNAN, TM HAMMONS, BE DAWSON, LR AF SINCLAIR, MB GOURLEY, PL BRENNAN, TM HAMMONS, BE DAWSON, LR TI SPECTRALLY AND TEMPORALLY RESOLVED LASER-EMISSION FROM VERTICAL-CAVITY SURFACE-EMITTING LASERS SO APPLIED PHYSICS LETTERS LA English DT Article RP SINCLAIR, MB (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 6 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD FEB 6 PY 1995 VL 66 IS 6 BP 662 EP 664 DI 10.1063/1.114091 PG 3 WC Physics, Applied SC Physics GA QE491 UT WOS:A1995QE49100004 ER PT J AU SILVERMAN, A ZUNGER, A KALISH, R ADLER, J AF SILVERMAN, A ZUNGER, A KALISH, R ADLER, J TI EFFECTS OF CONFIGURATIONAL, POSITIONAL AND VIBRATIONAL DEGREES OF FREEDOM ON AN ALLOY PHASE-DIAGRAM - A MONTE-CARLO STUDY OF GA1-XINXP SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID TRANSITION-METAL ALLOYS; 1ST-PRINCIPLES CALCULATION; SOLID-SOLUTIONS; SYSTEMS; THERMODYNAMICS; SEMICONDUCTORS; SEGREGATION; SIMULATIONS; STABILITY; SURFACE AB A large number of ab initio calculated total energies of different GaP/InP superlattices are used to fit a Born-Oppenheimer energy surface. Monte Carlo simulations are then performed on this surface, including treatment of configurational, positional and vibrational degrees of freedom. This permits isolation of the effects of these degrees of freedom on the thermodynamic behaviour. We find the following. (i) Positional relaxation of the atoms to equilibrium, (off-site) locations lowers enormously both the mixing enthalpy (by similar to 50%) and the miscibility gap (MG) temperature (from T-MG = 1746 K to T-MG = 833 K). (ii) Allowance for configurational correlations (absent in a mean-field treatment) reduces both the entropy and the enthalpy, leading to a net increase of similar to 70 K in T-MG. (iii) Vibrations reduce T-MG by similar to 30 K leading to a final T-MG = 870 K. The calculated phase diagram is in accord with experiment. C1 TECHNION ISRAEL INST TECHNOL, INST SOLID STATE, IL-32000 HAIFA, ISRAEL. NATL RENEWABLE ENERGY LAB, GOLDEN, CO 80401 USA. RP SILVERMAN, A (reprint author), TECHNION ISRAEL INST TECHNOL, DEPT PHYS, IL-32000 HAIFA, ISRAEL. RI Adler, Joan/K-6458-2012; Zunger, Alex/A-6733-2013 NR 49 TC 20 Z9 20 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 EI 1361-648X J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD FEB 6 PY 1995 VL 7 IS 6 BP 1167 EP 1180 DI 10.1088/0953-8984/7/6/018 PG 14 WC Physics, Condensed Matter SC Physics GA QH273 UT WOS:A1995QH27300018 ER PT J AU AHMAD, I AUSTIN, SM BACK, BB BAZIN, D BETTS, RR CALAPRICE, FP CHAN, KC CHISHTI, A CHOWDHURY, P DUNFORD, RW FOX, JD FREEDMAN, SJ FREER, M GAZES, SB GREENBERG, JS HALLIN, AL HAPP, T LAST, J KALOSKAMIS, N KASHY, E KUTSCHERA, W LISTER, CJ LIU, M MAIER, MR MERCER, D PERERA, A RHEIN, MD ROA, DE SCHIFFER, JP TRAINOR, T WILT, P WINFIELD, JS WOLANSKI, M WOLFS, FLH WUOSMAA, AH XU, G YOUNG, A YURKON, JE AF AHMAD, I AUSTIN, SM BACK, BB BAZIN, D BETTS, RR CALAPRICE, FP CHAN, KC CHISHTI, A CHOWDHURY, P DUNFORD, RW FOX, JD FREEDMAN, SJ FREER, M GAZES, SB GREENBERG, JS HALLIN, AL HAPP, T LAST, J KALOSKAMIS, N KASHY, E KUTSCHERA, W LISTER, CJ LIU, M MAIER, MR MERCER, D PERERA, A RHEIN, MD ROA, DE SCHIFFER, JP TRAINOR, T WILT, P WINFIELD, JS WOLANSKI, M WOLFS, FLH WUOSMAA, AH XU, G YOUNG, A YURKON, JE TI POSITRON PRODUCTION IN HEAVY-ION COLLISIONS - CURRENT STATUS OF THE PROBLEM SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID TH COLLISIONS; EMISSION; DETECTOR; SPECTRA; SYSTEMS; LINES; PEAKS C1 MICHIGAN STATE UNIV,NSCL,E LANSING,MI 48824. MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824. PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544. YALE UNIV,WRIGHT NUCL STRUCT LAB,NEW HAVEN,CT 06511. FLORIDA STATE UNIV,DEPT PHYS,TALLAHASSEE,FL 32306. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV BIRMINGHAM,DEPT PHYS,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637. QUEENS UNIV,DEPT PHYS,KINGSTON,ON K7L 3N6,CANADA. GSI DARMSTADT,D-64291 DARMSTADT,GERMANY. UNIV ROCHESTER,NUCL STRUCT RES LAB,ROCHESTER,NY 14627. UNIV WASHINGTON,PHYS NUCL LAB,SEATTLE,WA 98195. RP AHMAD, I (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. RI Hallin, Aksel/H-5881-2011; Freer, Martin/F-9379-2013 NR 18 TC 3 Z9 3 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 FEB 6 PY 1995 VL 583 BP C247 EP C256 PG 10 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000037 ER PT J AU BEENE, JR AF BEENE, JR TI PROBING REACTION DYNAMICS WITH GDR DECAY SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID HIGH-EXCITATION ENERGY; COMPOUND NUCLEUS; FUSION; RESONANCES; BARRIER AB The giant dipole resonance (GDR) has been a prolific source of information on the physics of the nucleus. Mostly it has taught us about nuclear structure, but recently experiments have utilized the GDR as a probe of nuclear reaction dynamics. In this report two examples of such investigations are discussed involving very different reactions and probing time scales that differ by a factor of similar to 10(3). RP BEENE, JR (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 20 TC 0 Z9 0 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 FEB 6 PY 1995 VL 583 BP C73 EP C81 PG 9 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000008 ER PT J AU BUSH, BW NIX, JR AF BUSH, BW NIX, JR TI CLASSICAL HADRODYNAMICS - A NEW APPROACH TO ULTRARELATIVISTIC HEAVY-ION COLLISIONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa AB We discuss a new approach to ultrarelativistic heavy-ion collisions based on classical hadrodynamics for extended nucleons, corresponding to nucleons of finite size interacting with massive meson fields. This new theory provides a natural covariant microscopic approach that includes automatically spacetime nonlocality and retardation, nonequilibrium phenomena, interactions among all nucleons; and particle production. In the current version of our theory, we consider N extended unexcited nucleons interacting with massive neutral scalar (sigma) and neutral vector (omega) meson fields. The resulting classical relativistic many-body equations of motion are solved numerically without further approximation for soft nucleon-nucleon collisions at P(lab) = 14.6, 30, 60, 100 and 200 GeV/c to yield the transverse momentum imparted to the nucleons. For the future development of the theory, the isovector pseudoscalar (pi(+), pi(-), pi(0)), isovector scalar (delta(+), delta(-), delta(0)), isovector vector (rho(+), rho(-), rho(0)) and neutral pseudoscalar (eta) meson fields that are known to be important from nucleon-nucleon scattering experiments should be incorporated. In addition, the effects of quantum uncertainty on the equations of motion should be included by use of techniques analogous to those used by Moniz and Sharp for nonrelativistic quantum electrodynamics. RP BUSH, BW (reprint author), LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. NR 21 TC 1 Z9 1 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 FEB 6 PY 1995 VL 583 BP C705 EP C710 PG 6 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000109 ER PT J AU CARPENTER, MP JANSSENS, RVF AF CARPENTER, MP JANSSENS, RVF TI HIGHLY DEFORMED NUCLEAR SHAPES - RECENT RESULTS FROM EXPERIMENT AND THEORY SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID SUPERDEFORMED BANDS; IDENTICAL BANDS; OCTUPOLE CORRELATIONS; ROTATIONAL BANDS; STATES; ENERGIES; MERCURY; DECAY RP CARPENTER, MP (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 32 TC 1 Z9 1 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 FEB 6 PY 1995 VL 583 BP C183 EP C190 PG 8 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000028 ER PT J AU GHIORSO, A LEE, D SOMERVILLE, LP LOVELAND, W NITSCHKE, JM GHIORSO, W SEABORG, GT WILMARTH, P LERES, R WYDLER, A NURMIA, M GREGORICH, K GAYLORD, R HAMILTON, T HANNINK, NJ HOFFMAN, DC JARZYNSKI, C KACHER, C KADKHODAYAN, B KREEK, S LANE, M LYON, A MCMAHAN, MA NEU, M SIKKELAND, T SWIATECKI, WJ TURLER, A WALTON, JT YASHITA, S AF GHIORSO, A LEE, D SOMERVILLE, LP LOVELAND, W NITSCHKE, JM GHIORSO, W SEABORG, GT WILMARTH, P LERES, R WYDLER, A NURMIA, M GREGORICH, K GAYLORD, R HAMILTON, T HANNINK, NJ HOFFMAN, DC JARZYNSKI, C KACHER, C KADKHODAYAN, B KREEK, S LANE, M LYON, A MCMAHAN, MA NEU, M SIKKELAND, T SWIATECKI, WJ TURLER, A WALTON, JT YASHITA, S TI EVIDENCE FOR THE SYNTHESIS OF (267)110 PRODUCED BY THE CO-59+BI-209 REACTION SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa AB An experiment to synthesize element 110 by the Co-59+Bi-209 reaction has been performed at the SuperHILAC at the Lawrence Berkeley Laboratory. One event with many of the expected characteristics of a successful synthesis of (267)110 was observed. This event corresponds to a production cross section of about one picobarn. C1 LANZHOU UNIV,LANZHOU 730000,PEOPLES R CHINA. OREGON STATE UNIV,DEPT CHEM,CORVALLIS,OR 97331. UNIV TRONDHEIM,DEPT PHYS,TRONDHEIM,NORWAY. PAUL SCHERRER INST,VILLIGEN,SWITZERLAND. RP GHIORSO, A (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. RI Jarzynski, Christopher/B-4490-2009; Turler, Andreas/D-3913-2014 OI Jarzynski, Christopher/0000-0002-3464-2920; Turler, Andreas/0000-0002-4274-1056 NR 8 TC 22 Z9 22 U1 0 U2 3 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 FEB 6 PY 1995 VL 583 BP C861 EP C866 PG 6 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000133 ER PT J AU GUGLIELMETTI, A BLANK, B BONETTI, R JANAS, Z KELLER, H KIRCHNER, R KLEPPER, O PIECHACZEK, A PLOCHOCKI, A POLI, G PRICE, PB ROECKL, E SCHMIDT, K SZERYPO, J WESTPHAL, AJ AF GUGLIELMETTI, A BLANK, B BONETTI, R JANAS, Z KELLER, H KIRCHNER, R KLEPPER, O PIECHACZEK, A PLOCHOCKI, A POLI, G PRICE, PB ROECKL, E SCHMIDT, K SZERYPO, J WESTPHAL, AJ TI PRODUCTION OF BA-114 IN NI-58+NI-58 REACTIONS AND DETECTION OF ITS CLUSTER RADIOACTIVITY SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID RADIOACTIVITY; DECAY AB The on-line mass separator at the GSI Unilac was used to produce and analyze decays of light barium isotopes including Ba-114. We report the observation of C-12 emission by Ba-114. The halflives for C-12 and alpha emission are found to be similar to 1.7 x 10(4) s and >500 s respectively. C1 CEN BORDEAUX GRADIGNAN,F-33175 GRADIGNAN,FRANCE. GESELL SCHWERIONENFORSCH MBH,D-64220 DARMSTADT,GERMANY. UNIV WARSAW,INST EXPTL PHYS,PL-00681 WARSAW,POLAND. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. KATHOLIEKE UNIV LEUVEN,INST KERN & STRALINGSFYS,B-3001 LOUVAIN,BELGIUM. RP GUGLIELMETTI, A (reprint author), UNIV MILAN,IST FIS GEN APPLICATA,MILAN,ITALY. NR 8 TC 12 Z9 12 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 FEB 6 PY 1995 VL 583 BP C867 EP C870 PG 4 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000134 ER PT J AU MATIS, HS BEEDOE, S BOUGTEB, M CARROLL, J CHRISTIE, W GONG, W HALLMAN, T HEILBRONN, L HUANG, H KIRK, PN KREBS, G IGO, G LETESSIERSELVON, A MADANSKY, L MANSO, F MILLER, J NAUDET, C PORTER, RJ PRUNET, M ROCHE, G SCHROEDER, LS SEIDL, P WANG, ZF WELSH, R WILSON, WK YEGNESWARAN, A AF MATIS, HS BEEDOE, S BOUGTEB, M CARROLL, J CHRISTIE, W GONG, W HALLMAN, T HEILBRONN, L HUANG, H KIRK, PN KREBS, G IGO, G LETESSIERSELVON, A MADANSKY, L MANSO, F MILLER, J NAUDET, C PORTER, RJ PRUNET, M ROCHE, G SCHROEDER, LS SEIDL, P WANG, ZF WELSH, R WILSON, WK YEGNESWARAN, A TI DILEPTON PRODUCTION FROM P-P TO CA-CA AT THE BEVALAC SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID DIELECTRON PRODUCTION; COLLISIONS AB The DLS collaboration has recently completed a high statistics study of dilepton production at the Bevalac. In particular, we have measured dielectrons (e(+)e(-)) from p-p and p-d collisions to understand the basic dilepton production mechanisms in the energy range from 1.05 - 4.9 GeV. These data can be used to determine the basic processes which contribute to nucleon-nucleon dilepton production such as hadronic bremsstrahlung, vector meson processes, and hadronic Dalitz decay. The data show that a simple elastic bremsstrahlung calculation is insufficient to explain the data. Theoretical models are compared with the data. A new high statistics study of Ca-Ca at 1.05 A . GeV has been made to study the collectivity of A-A collisions. C1 UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV CLERMONT FERRAND,IN2P3,F-63177 AUBRIERE,FRANCE. JOHNS HOPKINS UNIV,BALTIMORE,MD 21218. LOUISIANA STATE UNIV,BATON ROUGE,LA 70803. CONTINUOUS ELECTRON BEAM ACCELERATOR FACIL CTR,NEWPORT NEWS,VA 23606. RP MATIS, HS (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 15 TC 4 Z9 4 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 FEB 6 PY 1995 VL 583 BP C617 EP C622 PG 6 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000096 ER PT J AU MORETTO, LG PHAIR, L TSO, K JING, K WOZNIAK, GJ AF MORETTO, LG PHAIR, L TSO, K JING, K WOZNIAK, GJ TI TIME-SCALE AND BRANCHING RATIOS IN SEQUENTIAL MULTIFRAGMENTATION SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID HEAVY-ION COLLISIONS; HOT NUCLEI; EMISSION; ENERGY AB Experimental intermediate-mass-fragment multiplicity distributions are shown to be binomial at all excitation energies. From these distributions a single binary event probability can be extracted that has the thermal dependence p = exp[-B/T]. Thus, it is inferred that multifragmentation is a sequence of thermal binary events. The increase of p with excitation energy implies a corresponding contraction of the time-scale and explains recently observed fragment-fragment Coulomb correlations. RP MORETTO, LG (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 25 TC 2 Z9 2 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 FEB 6 PY 1995 VL 583 BP C513 EP C518 PG 6 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000079 ER PT J AU OZAWA, A TANIHATA, I KOBAYASHI, T HIRATA, D YAMAKAWA, O OMATA, K TAKAHASHI, N SHIMODA, T SUGIMOTO, K OLSON, D CHRISTIE, W WIEMAN, H AF OZAWA, A TANIHATA, I KOBAYASHI, T HIRATA, D YAMAKAWA, O OMATA, K TAKAHASHI, N SHIMODA, T SUGIMOTO, K OLSON, D CHRISTIE, W WIEMAN, H TI INTERACTION CROSS-SECTIONS AND RADII OF C-11 AND N-12 AND EFFECTIVE DEFORMATION PARAMETERS IN LIGHT MIRROR NUCLEI SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID QUADRUPOLE-MOMENT; PROTON HALO AB Interaction radii for C-11 and N-12 have been determined by the measurement of interaction cross sections at around 730 MeV/nucleon. Effective root-mean-square (RMS) matter and charge radii of nucleon distribution of these nuclei have been deduced using a Glauber-model calculation. Effective deformation parameters of light mirror nuclei (A=8, 11, 12, and 17) have been deduced using experimentally observed quadrupole moments. The deformation is almost equal between the mirror pair, and the large deformation parameter has been observed for A=8. This suggests that the relatively large quadrupole moment of B-8 is not due to the proton-halo but to the large deformation C1 FUKUI UNIV,FAC EDUC,FUKUI 910,JAPAN. UNIV TOKYO,INST NUCL STUDY,TANASHI,TOKYO 188,JAPAN. OSAKA UNIV,FAC SCI,TOYONAKA,OSAKA 560,JAPAN. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP OZAWA, A (reprint author), RIKEN,WAKO,SAITAMA 35101,JAPAN. RI Hirata, Daisy/F-3199-2013 NR 10 TC 6 Z9 6 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 FEB 6 PY 1995 VL 583 BP C807 EP C810 PG 4 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000125 ER PT J AU PEILERT, G AF PEILERT, G TI DIRECTED FLOW FROM LBL TO AGS ENERGY SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID HEAVY-ION COLLISIONS; RELATIVISTIC NUCLEAR COLLISIONS; MOMENTUM-DEPENDENT INTERACTIONS; EQUATION; MOTION; STATE RP PEILERT, G (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 24 TC 0 Z9 0 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 FEB 6 PY 1995 VL 583 BP C317 EP C322 PG 6 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000047 ER PT J AU RANDRUP, J AF RANDRUP, J TI SIMPLIFIED TREATMENT OF COLLECTIVE INSTABILITIES IN MATTER SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID NUCLEAR COLLISIONS; FLUCTUATIONS AB By exploiting the simplicity emerging when the temperature is small in comparison with the Fermi energy, it is possible to treat the collective modes in unstable nuclear matter on a nearly analytical form. Some of the key results are outlined and illustrated. RP RANDRUP, J (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 8 TC 2 Z9 2 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 FEB 6 PY 1995 VL 583 BP C329 EP C332 PG 4 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000049 ER PT J AU REHM, KE JIANG, CL GEHRING, J GLAGOLA, B KUTSCHERA, W RHEIN, MD WUOSMAA, AH AF REHM, KE JIANG, CL GEHRING, J GLAGOLA, B KUTSCHERA, W RHEIN, MD WUOSMAA, AH TI OBSERVATION OF THE 1-NEUTRON TO 6-NEUTRON TRANSFER-REACTIONS AT SUBBARRIER ENERGIES SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID HEAVY-ION COLLISIONS AB Cross sections for the one- to six-neutron transfer reactions have been measured at subbarrier energies in the system Ni-58 + Mo-100. The cross sections for multi-neutron transfer processes show an exponential falloff with a slope which is in agreement with recent theoretical calculations. No enhancement of the two-, four and six-neutron transfers with respect to the one-, three- and five-neutron yields has been observed. RP REHM, KE (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. NR 14 TC 1 Z9 1 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 FEB 6 PY 1995 VL 583 BP C421 EP C426 PG 6 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000065 ER PT J AU RITTER, HG ALBERGO, S BIESER, F BRADY, FP CACCIA, Z CEBRA, DA CHACON, AD CHANCE, JL CHOI, Y COSTA, S ELLIOTT, JB GILKES, ML HAUGER, JA HIRSCH, AS HJORT, EL INSOLIA, A JUSTICE, M KEANE, D KINTNER, J LINDENSTRUTH, V LISA, MA LYNEN, U MATIS, HS MCMAHAN, M MCPARLAND, C MUELLER, WFJ OLSON, DL PARTLAN, MD PORILE, NT POTENZA, R RAI, G RASMUSSEN, J ROMANSKI, J ROMERO, JL RUSSO, GV SANN, H SCHARENBERG, RP SCOTT, A SHAO, Y SRIVASTAVA, BK SYMONS, TJM TINCKNELL, ML TUVE, C WANG, S WARREN, PG WIEMAN, HH WOLFE, KL AF RITTER, HG ALBERGO, S BIESER, F BRADY, FP CACCIA, Z CEBRA, DA CHACON, AD CHANCE, JL CHOI, Y COSTA, S ELLIOTT, JB GILKES, ML HAUGER, JA HIRSCH, AS HJORT, EL INSOLIA, A JUSTICE, M KEANE, D KINTNER, J LINDENSTRUTH, V LISA, MA LYNEN, U MATIS, HS MCMAHAN, M MCPARLAND, C MUELLER, WFJ OLSON, DL PARTLAN, MD PORILE, NT POTENZA, R RAI, G RASMUSSEN, J ROMANSKI, J ROMERO, JL RUSSO, GV SANN, H SCHARENBERG, RP SCOTT, A SHAO, Y SRIVASTAVA, BK SYMONS, TJM TINCKNELL, ML TUVE, C WANG, S WARREN, PG WIEMAN, HH WOLFE, KL TI FLOW AND MULTIFRAGMENTATION IN NUCLEAR COLLISIONS AT INTERMEDIATE ENERGIES SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID HEAVY-ION COLLISIONS; PERCOLATION CLUSTERS; PHASE-TRANSITION; HADRONIC MATTER; FRAGMENT FLOW; EQUATION; STATE; SIGNALS; YIELDS; BLAST AB Energy spectra of hydrogen and helium isotopes emitted in Au+Au collisions at 0.25, 0.40, 0.60, 0.80, 1.0, and 1.15A GeV have been measured. A systematic study of the shapes of the spectra reveals a significant non-thermal component consistent with collective radial flow. The strength of this component is evaluated as a function of bombarding energy. Comparisons of the flow signal to predictions of QMD and BUU models are made. Using reverse kinematics, breakup of gold nuclei has been studied in Au+C reactions at 1.0A GeV. The moments of the resulting charged fragment distribution provide evidence that nuclear matter possesses a critical point observable in finite nuclei. Values for the critical exponents gamma, beta, and tau have been determined. These values are close to those for liquid-gas systems and different from those for 3D percolation. C1 KENT STATE UNIV,KENT,OH 44242. PURDUE UNIV,W LAFAYETTE,IN 47907. UNIV CALIF DAVIS,DAVIS,CA 95616. TEXAS A&M UNIV,COLLEGE STN,TX 77843. UNIV CATANIA,I-95129 CATANIA,ITALY. IST NAZL FIS NUCL,I-95129 CATANIA,ITALY. GESELL SCHWERIONENFORSCH MBH,D-64220 DARMSTADT 11,GERMANY. RP RITTER, HG (reprint author), LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. RI Insolia, Antonio/M-3447-2015; TUVE', Cristina/P-3933-2015 OI Insolia, Antonio/0000-0002-9040-1566; TUVE', Cristina/0000-0003-0739-3153 NR 27 TC 13 Z9 13 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 FEB 6 PY 1995 VL 583 BP C491 EP C498 PG 8 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000077 ER PT J AU VOGT, R JACAK, BV MCGAUGHEY, PL RUUSKANEN, PV AF VOGT, R JACAK, BV MCGAUGHEY, PL RUUSKANEN, PV TI DILEPTON RAPIDITY DISTRIBUTIONS FROM A HADRONIZING QUARK-GLUON PLASMA SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5th International Conference on Nucleus-Nucleus Collisions CY MAY 30-JUN 04, 1994 CL TAORMINA, ITALY SP Natl Inst Nucl Phys, Univ Catania, Int Union Pure & Appl Phys, Italian Phys Soc, Sicilian Ctr Nucl & Solid State Phys, Comune Taormina, APIT Taormina, Banca Nazl Lavoro, Ansaldo Sri, Leybold Spa ID HEAVY-ION COLLISIONS; NUCLEAR COLLISIONS; CHARM PRODUCTION AB We calculate the rapidity distribution of dilepton pairs produced from an evolving quark-gluon plasma assuming a longitudinal scaling expansion with initial conditions locally determined from the rapidity density. These distributions are compared with those from lowest-order Drell-Yan production and semileptonic charm decay. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV JYVASKYLA,DEPT PHYS,SF-40351 JYVASKYLA,FINLAND. RP VOGT, R (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 26 TC 1 Z9 1 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 FEB 6 PY 1995 VL 583 BP C693 EP C698 PG 6 WC Physics, Nuclear SC Physics GA QG530 UT WOS:A1995QG53000107 ER PT J AU AHMED, T AID, S ANDREEV, V ANDRIEU, B APPUHN, RD ARPAGAUS, M BABAEV, A BAEHR, J BAN, J BARANOV, P BARRELET, E BARTEL, W BARTH, M BASSLER, U BECK, HP BEHREND, HJ BELOUSOV, A BERGER, C BERGSTEIN, H BERNARDI, G BERNET, R BERTRANDCOREMANS, G BESANCON, M BEYER, R BIDDULPH, P BIZOT, JC BLOBEL, V BORRAS, K BOTTERWECK, F BOUDRY, V BRAEMER, A BRASSE, F BRAUNSCHWEIG, W BRISSON, V BRUNCKO, D BRUNE, C BUCHHOLZ, R BUNGENER, L BURGER, J BUSSER, FW BUNIATIAN, A BURKE, S BUSCHHORN, G CAMPBELL, AJ CARLI, T CHARLES, F CLARKE, D CLEGG, AB CLERBAUX, B COLOMBO, M CONTRERAS, JG COUGHLAN, JA COURAU, A COUTURES, C COZZIKA, G CRIEGEE, L CUSSANS, DG CVACH, J DAGORET, S DAVID, M DAINTON, JB DANILOV, M DAU, WD DAUM, K DEFFUR, E DELCOURT, B DELBUONO, L DEROECK, A DEWOLF, EA DINEZZA, P DOLLFUS, C DOWELL, JD DREIS, HB DROUTSKOI, V DUBOC, J DULLMANN, D DUNGER, O DUHM, H EBERT, J EBERT, TR ECKERLIN, G EFREMENKO, V EGLI, S EHRLICHMANN, H EICHENBERGER, S EICHLER, R EISELE, F EISENHANDLER, E ELLISON, RJ ELSEN, E ERDMANN, M ERDMANN, W EVRARD, E FAVART, L FEDOTOV, A FEEKEN, D FELST, R FELTESSE, J FERENCEI, J FERRAROTTO, F FLAMM, K FLEISCHER, M FLIESER, M FLUGGE, G FOMENKO, A FOMINYKH, B FORBUSH, M FORMANEK, J FOSTER, JM FRANKE, G FRETWURST, E GABATHULER, E GABATHULER, K GAMERDINGER, K GARVEY, J GAYLER, J GEBAUER, M GELLRICH, A GENZEL, H GERHARDS, R GOERLACH, U GOERLICH, L GOGITIDZE, N GOLDBERG, M GOLDNER, D GONZALEZPINEIRO, B GOODALL, AM GORELOV, I GORITCHEV, P GRAB, C GRASSLER, H GRASSLER, R GREENSHAW, T GRINDHAMMER, G GRUBER, A GRUBER, C HAACK, J HAIDT, D HAJDUK, L HAMON, O HAMPEL, M HANLON, EM HAPKE, M HAYNES, WJ HEATHERINGTON, J HEINZELMANN, G HENDERSON, RCW HENSCHEL, H HERMA, R HERYNEK, I HESS, MF HILDESHEIM, W HILL, P HILLER, KH HILTON, CD HLADKY, J HOEGER, KC HOPPNER, M HORISBERGER, R HUET, P HUFNAGEL, H IBBOTSON, M ITTERBECK, H JABIOL, MA JACHOLKOWSKA, A JACOBSSON, C JAFFRE, M JANOTH, J JANSEN, T JONSSON, L JOHANNSEN, K JOHNSON, DP JOHNSON, L JUNG, H KALMUS, PIP KANT, D KASCHOWITZ, R KASSELMANN, P KATHAGE, U KAUFMANN, HH KAZARIAN, S KENYON, IR KERMICHE, S KEUKER, C KIESLING, C KLEIN, M KLEINWORT, C KNIES, G KO, W KOHLER, T KOLANOSKI, H KOLE, F KOLYA, SD KORBEL, V KORN, M KOSTKA, P KOTELNIKOV, SK KRAMERKAMPER, T KRASNY, MW KREHBIEL, H KRUCKER, D KRUGER, U KRUNERMARQUIS, U KUBENKA, JP KUSTER, H KUHLEN, M KURCA, T KURZHOFER, J KUZNIK, B LACOUR, D LAMARCHE, F LANDER, R LANDON, MPJ LANGE, W LANIUS, P LAPORTE, JF LEBEDEV, A LEVERENZ, C LEVONIAN, S LEY, C LINDNER, A LINDSTROM, G LINSEL, F LIPINSKI, J LIST, B LOCH, P LOHMANDER, H LOPEZ, GC LUBIMOV, V LUKE, D MAGNUSSEN, N MALINOVSKI, E MANI, S MARACEK, R MARAGE, P MARKS, J MARSHALL, R MARTENS, J MARTIN, R MARTYN, HU MARTYNIAK, J MASSON, S MAVROIDIS, T MAXFIELD, SJ MCMAHON, SJ MEHTA, A MEIER, K MERCER, D MERZ, T MEYER, CA MEYER, H MEYER, J MIKOCKI, S MILSTEAD, D MOREAU, F MORRIS, JV MULLER, G MULLER, K MURIN, P NAGOVIZIN, V NAHNHAUER, R NAROSKA, B NAUMANN, T NEWMAN, PR NEWTON, D NEYRET, D NGUYEN, HK NIEBERGALL, F NIEBUHR, C NISIUS, R NOWAK, G NOYES, GW NYBERGWERTHER, M OBERLACK, H OBROCK, U OLSSON, JE PANARO, E PANITCH, A PASCAUD, C PATEL, GD PEPPEL, E PEREZ, E PHILLIPS, JP PICHLER, C PITZL, D POPE, G PRELL, S PROSI, R RADEL, G RAUPACH, F REIMER, P REINSHAGEN, S RIBARICS, P RICK, H RIECH, V RIEDLBERGER, J RIESS, S RIETZ, M ROBERTSON, SM ROBMANN, P ROLOFF, HE ROOSEN, R ROSENBAUER, K ROSTOVTSEV, A ROUSE, F ROYON, C RUTER, K RUSAKOV, S RYBICKI, K RYLKO, R SAHLMANN, N SANCHEZ, E SANKEY, DPC SAVITSKY, M SCHACHT, P SCHIEK, S SCHLEPER, P VONSCHLIPPE, W SCHMIDT, C SCHMIDT, D SCHMIDT, G SCHONING, A SCHRODER, V SCHUHMANN, E SCHWAB, B SCHWIND, A SEEHAUSEN, U SEFKOW, F SEIDEL, M SELL, R SEMENOV, A SHEKELYAN, V SHEVIAKOV, I SHOOSHTARI, H SHTARKOV, LN SIEGMON, G SIEWERT, U SIROIS, Y SKILLICORN, IO SMIRNOV, P SMITH, JR SOLOVIEV, Y SPITZER, H STAROSTA, R STEENBOCK, M STEFFEN, P STEINBERG, R STELLA, B STEPHENS, K STIER, J STIEWE, J STOSSLEIN, U STRACHOTA, J STRAUMANN, U STRUCZINSKI, W SUTTON, JP TAPPROGGE, S TAYLOR, RE TCHERNYSHOV, V THIEBAUX, C THOMPSON, G TRUOL, P TURNAU, J TUTAS, J UELKES, P USIK, A VALKAR, S VALKAROVA, A VALLEE, C VANESCH, P VANMECHELEN, P VARTAPETIAN, A VAZDIK, Y VECKO, M VERRECCHIA, P VILLET, G WACKER, K WAGENER, A WAGENER, M WALKER, IW WALTHER, A WEBER, G WEBER, M WEGENER, D WEGNER, A WELLISCH, HP WEST, LR WILLARD, S WINDE, M WINTER, GG WRIGHT, AE WUNSCH, E WULFF, N YIOU, TP ZACEK, J ZARBOCK, D ZHANG, Z ZHOKIN, A ZIMMER, M ZIMMERMANN, W ZOMER, F ZUBER, K AF AHMED, T AID, S ANDREEV, V ANDRIEU, B APPUHN, RD ARPAGAUS, M BABAEV, A BAEHR, J BAN, J BARANOV, P BARRELET, E BARTEL, W BARTH, M BASSLER, U BECK, HP BEHREND, HJ BELOUSOV, A BERGER, C BERGSTEIN, H BERNARDI, G BERNET, R BERTRANDCOREMANS, G BESANCON, M BEYER, R BIDDULPH, P BIZOT, JC BLOBEL, V BORRAS, K BOTTERWECK, F BOUDRY, V BRAEMER, A BRASSE, F BRAUNSCHWEIG, W BRISSON, V BRUNCKO, D BRUNE, C BUCHHOLZ, R BUNGENER, L BURGER, J BUSSER, FW BUNIATIAN, A BURKE, S BUSCHHORN, G CAMPBELL, AJ CARLI, T CHARLES, F CLARKE, D CLEGG, AB CLERBAUX, B COLOMBO, M CONTRERAS, JG COUGHLAN, JA COURAU, A COUTURES, C COZZIKA, G CRIEGEE, L CUSSANS, DG CVACH, J DAGORET, S DAVID, M DAINTON, JB DANILOV, M DAU, WD DAUM, K DEFFUR, E DELCOURT, B DELBUONO, L DEROECK, A DEWOLF, EA DINEZZA, P DOLLFUS, C DOWELL, JD DREIS, HB DROUTSKOI, V DUBOC, J DULLMANN, D DUNGER, O DUHM, H EBERT, J EBERT, TR ECKERLIN, G EFREMENKO, V EGLI, S EHRLICHMANN, H EICHENBERGER, S EICHLER, R EISELE, F EISENHANDLER, E ELLISON, RJ ELSEN, E ERDMANN, M ERDMANN, W EVRARD, E FAVART, L FEDOTOV, A FEEKEN, D FELST, R FELTESSE, J FERENCEI, J FERRAROTTO, F FLAMM, K FLEISCHER, M FLIESER, M FLUGGE, G FOMENKO, A FOMINYKH, B FORBUSH, M FORMANEK, J FOSTER, JM FRANKE, G FRETWURST, E GABATHULER, E GABATHULER, K GAMERDINGER, K GARVEY, J GAYLER, J GEBAUER, M GELLRICH, A GENZEL, H GERHARDS, R GOERLACH, U GOERLICH, L GOGITIDZE, N GOLDBERG, M GOLDNER, D GONZALEZPINEIRO, B GOODALL, AM GORELOV, I GORITCHEV, P GRAB, C GRASSLER, H GRASSLER, R GREENSHAW, T GRINDHAMMER, G GRUBER, A GRUBER, C HAACK, J HAIDT, D HAJDUK, L HAMON, O HAMPEL, M HANLON, EM HAPKE, M HAYNES, WJ HEATHERINGTON, J HEINZELMANN, G HENDERSON, RCW HENSCHEL, H HERMA, R HERYNEK, I HESS, MF HILDESHEIM, W HILL, P HILLER, KH HILTON, CD HLADKY, J HOEGER, KC HOPPNER, M HORISBERGER, R HUET, P HUFNAGEL, H IBBOTSON, M ITTERBECK, H JABIOL, MA JACHOLKOWSKA, A JACOBSSON, C JAFFRE, M JANOTH, J JANSEN, T JONSSON, L JOHANNSEN, K JOHNSON, DP JOHNSON, L JUNG, H KALMUS, PIP KANT, D KASCHOWITZ, R KASSELMANN, P KATHAGE, U KAUFMANN, HH KAZARIAN, S KENYON, IR KERMICHE, S KEUKER, C KIESLING, C KLEIN, M KLEINWORT, C KNIES, G KO, W KOHLER, T KOLANOSKI, H KOLE, F KOLYA, SD KORBEL, V KORN, M KOSTKA, P KOTELNIKOV, SK KRAMERKAMPER, T KRASNY, MW KREHBIEL, H KRUCKER, D KRUGER, U KRUNERMARQUIS, U KUBENKA, JP KUSTER, H KUHLEN, M KURCA, T KURZHOFER, J KUZNIK, B LACOUR, D LAMARCHE, F LANDER, R LANDON, MPJ LANGE, W LANIUS, P LAPORTE, JF LEBEDEV, A LEVERENZ, C LEVONIAN, S LEY, C LINDNER, A LINDSTROM, G LINSEL, F LIPINSKI, J LIST, B LOCH, P LOHMANDER, H LOPEZ, GC LUBIMOV, V LUKE, D MAGNUSSEN, N MALINOVSKI, E MANI, S MARACEK, R MARAGE, P MARKS, J MARSHALL, R MARTENS, J MARTIN, R MARTYN, HU MARTYNIAK, J MASSON, S MAVROIDIS, T MAXFIELD, SJ MCMAHON, SJ MEHTA, A MEIER, K MERCER, D MERZ, T MEYER, CA MEYER, H MEYER, J MIKOCKI, S MILSTEAD, D MOREAU, F MORRIS, JV MULLER, G MULLER, K MURIN, P NAGOVIZIN, V NAHNHAUER, R NAROSKA, B NAUMANN, T NEWMAN, PR NEWTON, D NEYRET, D NGUYEN, HK NIEBERGALL, F NIEBUHR, C NISIUS, R NOWAK, G NOYES, GW NYBERGWERTHER, M OBERLACK, H OBROCK, U OLSSON, JE PANARO, E PANITCH, A PASCAUD, C PATEL, GD PEPPEL, E PEREZ, E PHILLIPS, JP PICHLER, C PITZL, D POPE, G PRELL, S PROSI, R RADEL, G RAUPACH, F REIMER, P REINSHAGEN, S RIBARICS, P RICK, H RIECH, V RIEDLBERGER, J RIESS, S RIETZ, M ROBERTSON, SM ROBMANN, P ROLOFF, HE ROOSEN, R ROSENBAUER, K ROSTOVTSEV, A ROUSE, F ROYON, C RUTER, K RUSAKOV, S RYBICKI, K RYLKO, R SAHLMANN, N SANCHEZ, E SANKEY, DPC SAVITSKY, M SCHACHT, P SCHIEK, S SCHLEPER, P VONSCHLIPPE, W SCHMIDT, C SCHMIDT, D SCHMIDT, G SCHONING, A SCHRODER, V SCHUHMANN, E SCHWAB, B SCHWIND, A SEEHAUSEN, U SEFKOW, F SEIDEL, M SELL, R SEMENOV, A SHEKELYAN, V SHEVIAKOV, I SHOOSHTARI, H SHTARKOV, LN SIEGMON, G SIEWERT, U SIROIS, Y SKILLICORN, IO SMIRNOV, P SMITH, JR SOLOVIEV, Y SPITZER, H STAROSTA, R STEENBOCK, M STEFFEN, P STEINBERG, R STELLA, B STEPHENS, K STIER, J STIEWE, J STOSSLEIN, U STRACHOTA, J STRAUMANN, U STRUCZINSKI, W SUTTON, JP TAPPROGGE, S TAYLOR, RE TCHERNYSHOV, V THIEBAUX, C THOMPSON, G TRUOL, P TURNAU, J TUTAS, J UELKES, P USIK, A VALKAR, S VALKAROVA, A VALLEE, C VANESCH, P VANMECHELEN, P VARTAPETIAN, A VAZDIK, Y VECKO, M VERRECCHIA, P VILLET, G WACKER, K WAGENER, A WAGENER, M WALKER, IW WALTHER, A WEBER, G WEBER, M WEGENER, D WEGNER, A WELLISCH, HP WEST, LR WILLARD, S WINDE, M WINTER, GG WRIGHT, AE WUNSCH, E WULFF, N YIOU, TP ZACEK, J ZARBOCK, D ZHANG, Z ZHOKIN, A ZIMMER, M ZIMMERMANN, W ZOMER, F ZUBER, K TI OBSERVATION OF HARD PROCESSES IN RAPIDITY GAP EVENTS IN GAMMA-P INTERACTIONS AT HERA SO NUCLEAR PHYSICS B LA English DT Note ID LIQUID ARGON CALORIMETER; DIFFRACTION DISSOCIATION; POMERON STRUCTURE; SCATTERING; PHOTOPRODUCTION; VERSION; PHOTONS; JETS AB Events with no hadronic energy flow in a large interval of pseudo-rapidity in the proton direction are observed in photon-proton interactions at an average centre of mass energy [root S(gamma)p] of 200 GeV. These events are interpreted as photon diffractive dissociation. Evidence for hard scattering in photon diffractive dissociation is demonstrated using inclusive single particle spectra, thrust as a function of transverse energy, and the observation of jet production. The data can be described by a Monte Carlo calculation including hard photon-pomeron scattering. C1 RHEIN WESTFAL TH AACHEN,INST PHYS 3,W-5100 AACHEN,GERMANY. UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. FREE UNIV BRUSSELS,ULB,INTERUNIV INST HIGH ENERGIES,BRUSSELS,BELGIUM. UNIV INSTELLING ANTWERP,B-2610 WILRIJK,BELGIUM. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. INST NUCL PHYS,KRAKOW,POLAND. UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA. UNIV CALIF DAVIS,IIRPA,DAVIS,CA. UNIV DORTMUND,INST PHYS,W-4600 DORTMUND,GERMANY. CEA SACLAY,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE. UNIV GLASGOW,DEPT PHYS & ASTRON,GLASGOW,LANARK,SCOTLAND. DESY,W-2000 HAMBURG,GERMANY. UNIV HAMBURG,INST EXPTL PHYS 1,HAMBURG,GERMANY. UNIV HAMBURG,INST EXPTL PHYS 2,W-2000 HAMBURG,GERMANY. UNIV HEIDELBERG,INST PHYS,W-6900 HEIDELBERG,GERMANY. UNIV HEIDELBERG,INST HOCHENERGIEPHYS,HEIDELBERG,GERMANY. CHRISTIAN ALBRECHTS UNIV KIEL,INST REINE & ANGEW KERNPHYS,W-2300 KIEL,GERMANY. SLOVAK ACAD SCI,INST EXPTL PHYS,KOSICE 04353,SLOVAKIA. UNIV LANCASTER,SCH PHYS & MAT,LANCASTER,ENGLAND. UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. UNIV LONDON QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND. LUND UNIV,DEPT PHYS,LUND,SWEDEN. UNIV MANCHESTER,DEPT PHYS,MANCHESTER M13 9PL,LANCS,ENGLAND. INST THEORET & EXPTL PHYS,MOSCOW 117259,RUSSIA. PN LEBEDEV PHYS INST,MOSCOW 117924,RUSSIA. UNIV AIX MARSEILLE 2,CPPM,IN2P3,CNRS,MARSEILLE,FRANCE. MAX PLANCK INST PHYS & ASTROPHYS,MUNICH,GERMANY. UNIV PARIS 11,LAL,IN2P3,CNRS,ORSAY,FRANCE. ECOLE POLYTECH,LPNHE,IN2P3,CNRS,PALAISEAU,FRANCE. UNIV PARIS 06,LPNHE,F-75230 PARIS,FRANCE. UNIV PARIS 07,IN2P3,CNRS,F-75230 PARIS,FRANCE. ACAD SCI CZECH REPUBL,INST PHYS,PRAGUE,CZECH REPUBLIC. IST NAZL FIS NUCL,ROME,ITALY. UNIV ROMA LA SAPIENZA,DIPARTIMENTO FIS,I-00185 ROME,ITALY. PAUL SCHERRER INST,VILLIGEN,SWITZERLAND. BERG UNIV GESAMTHSCH WUPPERTAL,FACHBEREICH PHYS,W-5600 WUPPERTAL,GERMANY. DESY,INST HOCHENERGIEPHYS,ZEUTHEN,GERMANY. ETH ZURICH,INST TEILCHENPHYS,ZURICH,SWITZERLAND. UNIV ZURICH,INST PHYS,ZURICH,SWITZERLAND. STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP AHMED, T (reprint author), RHEIN WESTFAL TH AACHEN,INST PHYS 1,W-5100 AACHEN,GERMANY. RI Kotelnikov, Sergey/A-9711-2014; Cvach, Jaroslav/G-6269-2014; Levonian, Sergey/M-8693-2015; Soloviev, Yury/M-8788-2015; Andreev, Vladimir/M-8665-2015; Fomenko, Alexander/I-7900-2014; Malinovski, Evgenii/N-1034-2015; Gogitidze, Nelli/N-1224-2015; Belousov, Anatoli/N-2102-2015; Vazdik, Iakov/N-2624-2015; Gorelov, Igor/J-9010-2015; Meyer, Curtis/L-3488-2014; Sheviakov, Igor/N-2735-2015; Danilov, Mikhail/C-5380-2014 OI Kotelnikov, Sergey/0000-0002-8027-4612; Soloviev, Yury/0000-0003-1136-2827; Gorelov, Igor/0000-0001-5570-0133; Meyer, Curtis/0000-0001-7599-3973; Sheviakov, Igor/0000-0002-1659-3483; Danilov, Mikhail/0000-0001-9227-5164 NR 33 TC 43 Z9 43 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD FEB 6 PY 1995 VL 435 IS 1-2 BP 3 EP 20 DI 10.1016/0550-3213(94)00541-L PG 18 WC Physics, Particles & Fields SC Physics GA QD393 UT WOS:A1995QD39300001 ER PT J AU BERN, Z DIXON, L DUNBAR, DC KOSOWER, DA AF BERN, Z DIXON, L DUNBAR, DC KOSOWER, DA TI FUSING GAUGE-THEORY TREE AMPLITUDES INTO LOOP AMPLITUDES SO NUCLEAR PHYSICS B LA English DT Article ID JET CROSS-SECTIONS; HIGHER-ORDER CORRECTIONS; BACKGROUND FIELD METHOD; DIMENSIONAL REGULARIZATION; FEYNMAN DIAGRAMS; MULTIPLE BREMSSTRAHLUNG; HELICITY AMPLITUDES; ALGEBRAIC REDUCTION; GLUON AMPLITUDES; SCALAR INTEGRALS AB We identify a large class of one-loop amplitudes for massless particles that can be constructed via unitarity from tree amplitudes, without any ambiguities. One-loop amplitudes for massless supersymmetric gauge theories fall into this class; in addition, many non-supersymmetric amplitudes can be rearranged to take advantage of the result. As applications, we construct the one-loop amplitudes for n-gluon scattering in N = 1 supersymmetric theories with the helicity configuration of the Parke-Taylor tree amplitudes, and for six-gluon scattering in N = 4 super-Yang-Mills theory for all helicity configurations. C1 STANFORD UNIV, STANFORD LINEAR ACCELERATOR CTR, STANFORD, CA 94309 USA. CTR ETUD SACLAY, SERV PHYS THEOR, F-91191 GIF SUR YVETTE, FRANCE. RP BERN, Z (reprint author), UNIV CALIF LOS ANGELES, DEPT PHYS, 405 HILGARD AVE, LOS ANGELES, CA 90024 USA. OI dunbar, david/0000-0003-2433-1675 NR 87 TC 544 Z9 544 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD FEB 6 PY 1995 VL 435 IS 1-2 BP 59 EP 101 DI 10.1016/0550-3213(94)00488-Z PG 43 WC Physics, Particles & Fields SC Physics GA QD393 UT WOS:A1995QD39300003 ER PT J AU PARKE, S AF PARKE, S TI STATUS OF THE SOLAR-NEUTRINO PUZZLE SO PHYSICAL REVIEW LETTERS LA English DT Article ID MODEL RP PARKE, S (reprint author), FERMILAB NATL ACCELERATOR LAB,DEPT PHYS THEOR,POB 500,BATAVIA,IL 60510, USA. NR 13 TC 51 Z9 51 U1 0 U2 0 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 FEB 6 PY 1995 VL 74 IS 6 BP 839 EP 841 DI 10.1103/PhysRevLett.74.839 PG 3 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700003 ER PT J AU ABE, F ALBROW, MG AMIDEI, D ANTOS, J ANWAYWIESE, C APOLLINARI, G ARETI, H ATAC, M AUCHINCLOSS, P AZFAR, F AZZI, P BACCHETTA, N BADGETT, W BAILEY, MW BAO, J DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BENTON, D BERETVAS, A BERGE, JP BERTOLUCCI, S BHATTI, A BIERY, K BINKLEY, M BIRD, F BISELLO, D BLAIR, RE BLOCKER, C BODEK, A BOKHARI, W BOLOGNESI, V BORTOLETTO, D BOSWELL, C BOULOS, T BRANDENBURG, G BUCKLEYGEER, E BUDD, HS BURKETT, K BUSETTO, G BYONWAGNER, A BYRUM, KL CAMMERATA, J CAMPAGNARI, C CAMPBELL, M CANER, A CARITHERS, W CARLSMITH, D CASTRO, A CEN, Y CERVELLI, F CHAPMAN, J CHENG, MT CHIARELLI, G CHIKAMATSU, T CIHANGIR, S CLARK, AG COBAL, M CONTRERAS, M CONWAY, J COOPER, J CORDELLI, M CRANE, D CUNNINGHAM, JD DANIELS, T DEJONGH, F DELCHAMPS, S DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DENINNO, M DERWENT, PF DEVLIN, T DICKSON, M DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENGELS, E ENO, S ERREDE, D ERREDE, S FAN, Q FARHAT, B FIORI, I FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRIEDMAN, J FRISCH, H FRY, A FUESS, TA FUKUI, Y FUNAKI, S GAGLIARDI, G GALEOTTI, S GALLINARO, M GARFINKEL, AF GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GLENZINSKI, D GOLD, M GONZALEZ, J GORDON, A GOSHAW, AT GOULIANOS, K GRASSMANN, P GREWAL, A GRIECO, G GROER, L GROSSOPILCHER, C HABER, C HAHN, SR HAMILTON, R HANDLER, R HANS, RM HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HEINRICH, J CRONINHENNESSY, D HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUFFMAN, BT HUGHES, R HURST, P HUSTON, J HUTH, J HYLEN, J INCAGLI, M INCANDELA, J ISO, H JENSEN, H JESSOP, CP JOSHI, U KADEL, RW KAJFASZ, E KAMON, T KANEKO, T KARDELIS, DA KASHA, H KATO, Y KEEBLE, L KENNEDY, RD KEPHART, R KESTEN, P KESTENBAUM, D KEUP, RM KEUTELIAN, H KEYVAN, F KIM, DH KIM, HS KIM, SB KIM, SH KIM, YK KIRSCH, L KOEHN, P KONDO, K KONIGSBERG, J KOPP, S KORDAS, K KOSKA, W KOVACS, E KOWALD, W KRASBERG, M KROLL, J KRUSE, M KUHLMANN, SE KUNS, E LAASANEN, AT LABANCA, N LAMMEL, S LAMOUREUX, JI LECOMPTE, T LEONE, S LEWIS, JD LIMON, P LINDGREN, M LISS, TM LOCKYER, N LOOMIS, C LONG, O LORETI, M LOW, EH LU, J LUCCHESI, D LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MAGHAKIAN, A MAKSIMOVIC, P MANGANO, M MANSOUR, J MARIOTTI, M MARRINER, JP MARTIN, A MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MELESE, P MENZIONE, A MESCHI, E MICHAIL, G MIKAMO, S MILLER, M MILLER, R MIMASHI, T MISCETTI, S MISHINA, M MITSUSHIO, H MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T MUSGRAVE, P NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NODULMAN, L OGAWA, S OH, SH OHL, KE OISHI, R OKUSAWA, T PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARK, S PATRICK, J PAULETTA, G PAULINI, M PESCARA, L PETERS, MD PHILLIPS, TJ PIACENTINO, G PILLAI, M PLUNKETT, R PONDROM, L PRODUIT, N PROUDFOOT, J PTOHOS, F PUNZI, G RAGAN, K RIMONDI, F RISTORI, L ROACHBELLINO, M ROBERTSON, WJ RODRIGO, T ROMANO, J ROSENSON, L SAKUMOTO, WK SALTZBERG, D SANSONI, A SCARPINE, V SCHINDLER, A SCHLABACH, P SCHMIDT, EE SCHMIDT, MP SCHNEIDER, O SCIACCA, GF SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SGOLACCHIA, A SHAPIRO, M SHAW, NM SHEN, Q SHEPARD, PF SHIMOJIMA, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SINGH, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPALDING, J SPIEGEL, L SPHICAS, P SPIES, A STANCO, L STEELE, J STEFANINI, A STRAHL, K STRAIT, J STUART, D SULLIVAN, G SUMOROK, K SWARTZ, RL TAKAHASHI, T TAKIKAWA, K TARTARELLI, F TAYLOR, W TERAMOTO, Y TETHER, S THERIOT, D THOMAS, J THOMAS, TL THUN, R TIMKO, M TIPTON, P TITOV, A TKACZYK, S TOLLEFSON, K TOLLESTRUP, A TONNISON, J DETROCONIZ, JF TSENG, J TURCOTTE, M TURINI, N UEMURA, N UKEGAWA, F UNAL, G VANDENBRINK, S VEJCIK, S VIDAL, R VONDRACEK, M WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WANG, G WANG, J WANG, MJ WANG, QF WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WICKLUND, AB WICKLUND, E WILKINSON, R WILLIAMS, HH WILSON, P WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YEH, P YIN, M YOH, J YOSHIDA, T YOVANOVITCH, D YU, I YUN, JC ZANETTI, A ZETTI, F ZHANG, L ZHANG, S ZHANG, W ZUCCHELLI, S AF ABE, F ALBROW, MG AMIDEI, D ANTOS, J ANWAYWIESE, C APOLLINARI, G ARETI, H ATAC, M AUCHINCLOSS, P AZFAR, F AZZI, P BACCHETTA, N BADGETT, W BAILEY, MW BAO, J DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BENTON, D BERETVAS, A BERGE, JP BERTOLUCCI, S BHATTI, A BIERY, K BINKLEY, M BIRD, F BISELLO, D BLAIR, RE BLOCKER, C BODEK, A BOKHARI, W BOLOGNESI, V BORTOLETTO, D BOSWELL, C BOULOS, T BRANDENBURG, G BUCKLEYGEER, E BUDD, HS BURKETT, K BUSETTO, G BYONWAGNER, A BYRUM, KL CAMMERATA, J CAMPAGNARI, C CAMPBELL, M CANER, A CARITHERS, W CARLSMITH, D CASTRO, A CEN, Y CERVELLI, F CHAPMAN, J CHENG, MT CHIARELLI, G CHIKAMATSU, T CIHANGIR, S CLARK, AG COBAL, M CONTRERAS, M CONWAY, J COOPER, J CORDELLI, M CRANE, D CUNNINGHAM, JD DANIELS, T DEJONGH, F DELCHAMPS, S DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DENINNO, M DERWENT, PF DEVLIN, T DICKSON, M DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENGELS, E ENO, S ERREDE, D ERREDE, S FAN, Q FARHAT, B FIORI, I FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRIEDMAN, J FRISCH, H FRY, A FUESS, TA FUKUI, Y FUNAKI, S GAGLIARDI, G GALEOTTI, S GALLINARO, M GARFINKEL, AF GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GLENZINSKI, D GOLD, M GONZALEZ, J GORDON, A GOSHAW, AT GOULIANOS, K GRASSMANN, P GREWAL, A GRIECO, G GROER, L GROSSOPILCHER, C HABER, C HAHN, SR HAMILTON, R HANDLER, R HANS, RM HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HEINRICH, J CRONINHENNESSY, D HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUFFMAN, BT HUGHES, R HURST, P HUSTON, J HUTH, J HYLEN, J INCAGLI, M INCANDELA, J ISO, H JENSEN, H JESSOP, CP JOSHI, U KADEL, RW KAJFASZ, E KAMON, T KANEKO, T KARDELIS, DA KASHA, H KATO, Y KEEBLE, L KENNEDY, RD KEPHART, R KESTEN, P KESTENBAUM, D KEUP, RM KEUTELIAN, H KEYVAN, F KIM, DH KIM, HS KIM, SB KIM, SH KIM, YK KIRSCH, L KOEHN, P KONDO, K KONIGSBERG, J KOPP, S KORDAS, K KOSKA, W KOVACS, E KOWALD, W KRASBERG, M KROLL, J KRUSE, M KUHLMANN, SE KUNS, E LAASANEN, AT LABANCA, N LAMMEL, S LAMOUREUX, JI LECOMPTE, T LEONE, S LEWIS, JD LIMON, P LINDGREN, M LISS, TM LOCKYER, N LOOMIS, C LONG, O LORETI, M LOW, EH LU, J LUCCHESI, D LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MAGHAKIAN, A MAKSIMOVIC, P MANGANO, M MANSOUR, J MARIOTTI, M MARRINER, JP MARTIN, A MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MELESE, P MENZIONE, A MESCHI, E MICHAIL, G MIKAMO, S MILLER, M MILLER, R MIMASHI, T MISCETTI, S MISHINA, M MITSUSHIO, H MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T MUSGRAVE, P NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NODULMAN, L OGAWA, S OH, SH OHL, KE OISHI, R OKUSAWA, T PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARK, S PATRICK, J PAULETTA, G PAULINI, M PESCARA, L PETERS, MD PHILLIPS, TJ PIACENTINO, G PILLAI, M PLUNKETT, R PONDROM, L PRODUIT, N PROUDFOOT, J PTOHOS, F PUNZI, G RAGAN, K RIMONDI, F RISTORI, L ROACHBELLINO, M ROBERTSON, WJ RODRIGO, T ROMANO, J ROSENSON, L SAKUMOTO, WK SALTZBERG, D SANSONI, A SCARPINE, V SCHINDLER, A SCHLABACH, P SCHMIDT, EE SCHMIDT, MP SCHNEIDER, O SCIACCA, GF SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SGOLACCHIA, A SHAPIRO, M SHAW, NM SHEN, Q SHEPARD, PF SHIMOJIMA, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SINGH, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPALDING, J SPIEGEL, L SPHICAS, P SPIES, A STANCO, L STEELE, J STEFANINI, A STRAHL, K STRAIT, J STUART, D SULLIVAN, G SUMOROK, K SWARTZ, RL TAKAHASHI, T TAKIKAWA, K TARTARELLI, F TAYLOR, W TERAMOTO, Y TETHER, S THERIOT, D THOMAS, J THOMAS, TL THUN, R TIMKO, M TIPTON, P TITOV, A TKACZYK, S TOLLEFSON, K TOLLESTRUP, A TONNISON, J DETROCONIZ, JF TSENG, J TURCOTTE, M TURINI, N UEMURA, N UKEGAWA, F UNAL, G VANDENBRINK, S VEJCIK, S VIDAL, R VONDRACEK, M WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WANG, G WANG, J WANG, MJ WANG, QF WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WICKLUND, AB WICKLUND, E WILKINSON, R WILLIAMS, HH WILSON, P WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YEH, P YIN, M YOH, J YOSHIDA, T YOVANOVITCH, D YU, I YUN, JC ZANETTI, A ZETTI, F ZHANG, L ZHANG, S ZHANG, W ZUCCHELLI, S TI CHARGE ASYMMETRY IN W-BOSON DECAYS PRODUCED IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV SO PHYSICAL REVIEW LETTERS LA English DT Article ID INELASTIC MUON SCATTERING; PARTON DISTRIBUTIONS; CROSS-SECTIONS; COLLIDERS; PROTON C1 ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV BOLOGNA,IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY. BRANDEIS UNIV,WALTHAM,MA 02254. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV CHICAGO,CHICAGO,IL 60637. DUKE UNIV,DURHAM,NC 27708. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY. HARVARD UNIV,CAMBRIDGE,MA 02138. UNIV ILLINOIS,URBANA,IL 61801. MCGILL UNIV,INST PARTICLE PHYS,MONTREAL,PQ H3A 2T8,CANADA. UNIV TORONTO,TORONTO,ON M5S 1A7,CANADA. JOHNS HOPKINS UNIV,BALTIMORE,MD 21218. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. MIT,CAMBRIDGE,MA 02139. UNIV MICHIGAN,ANN ARBOR,MI 48109. MICHIGAN STATE UNIV,E LANSING,MI 48824. UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. OSAKA CITY UNIV,OSAKA 588,JAPAN. UNIV PADUA,IST NAZL FIS NUCL,I-35131 PADUA,ITALY. UNIV PENN,PHILADELPHIA,PA 19104. UNIV PITTSBURGH,PITTSBURGH,PA 15260. UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY. SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY. PURDUE UNIV,W LAFAYETTE,IN 47907. UNIV ROCHESTER,ROCHESTER,NY 14627. ROCKEFELLER UNIV,NEW YORK,NY 10021. RUTGERS STATE UNIV,PISCATAWAY,NJ 08854. ACAD SINICA,TAIPEI 11529,TAIWAN. SUPERCONDUCTING SUPER COLLIDER LAB,DALLAS,TX 75237. TEXAS A&M UNIV,COLLEGE STN,TX 77843. UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN. TUFTS UNIV,MEDFORD,MA 02155. UNIV WISCONSIN,MADISON,WI 53706. YALE UNIV,NEW HAVEN,CT 06511. RP ABE, F (reprint author), KEK NAT LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN. RI Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Paulini, Manfred/N-7794-2014 OI Chiarelli, Giorgio/0000-0001-9851-4816; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Warburton, Andreas/0000-0002-2298-7315; Paulini, Manfred/0000-0002-6714-5787 NR 21 TC 57 Z9 57 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 FEB 6 PY 1995 VL 74 IS 6 BP 850 EP 854 DI 10.1103/PhysRevLett.74.850 PG 5 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700006 ER PT J AU ABE, F ALBROW, M AMIDEI, D ANWAYWIESE, C APOLLINARI, G ATAC, M AUCHINCLOSS, P AZZI, P BACCHETTA, N BADEN, AR BADGETT, W BAILEY, MW BAMBERGER, A DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BERETVAS, A BERGE, JP BERTOLUCCI, S BIERY, K BHADRA, S BINKLEY, M BISELLO, D BLAIR, R BLOCKER, C BODEK, A BOLOGNESI, V BOOTH, AW BOSWELL, C BRANDENBURG, G BROWN, D BUCKLEYGEER, E BUDD, HS BUSETTO, G BYONWAGNER, A BYRUM, KL CAMPAGNARI, C CAMPBELL, M CANER, A CAREY, R CARITHERS, W CARLSMITH, D CARROLL, JT CASHMORE, R CASTRO, A CEN, Y CERVELLI, F CHADWICK, K CHAPMAN, J CHIARELLI, G CHINOWSKY, W CIHANGIR, S CLARK, AG COBAL, M CONNOR, D CONTRERAS, M COOPER, J CORDELLI, M CRANE, D CUNNINGHAM, JD DAY, C DEJONGH, F DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DERWENT, PF DEVLIN, T DICKSON, M DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENO, S ERREDE, S ETCHEGOYEN, A FARHAT, B FELDMAN, GJ FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRISCH, H FUESS, T FUKUI, Y GAGLIARDI, G GARFINKEL, AF GAUTHIER, A GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GLADNEY, L GOLD, M GONZALEZ, J GOSHAW, A GOULIANOS, K GRASSMANN, H GRIECO, GM GRINDLEY, R GROSSOPILCHER, C HABER, C HAHN, SR HANDLER, R HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HESSING, T HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUBBARD, B HUFFMAN, BT HUGHES, R HURST, P HUTH, J HYLEN, J INCAGLI, M INO, T ISO, H JENSEN, H JESSOP, CP JOHNSON, RP JOSHI, U KADEL, RW KAMON, T KANDA, S KARDELIS, DA KARLINER, I KEARNS, E KEEBLE, L KEPHART, R KESTEN, P KEUP, RM KEUTELIAN, H KIM, D KIM, SB KIM, SH KIM, YK KIRSCH, L KONDO, K KONIGSBERG, J KORDAS, K KOVACS, E KRASBERG, M KUHLMANN, SE KUNS, E LAASANEN, AT LAMMEL, S LAMOUREUX, JI LEONE, S LEWIS, JD LI, W LIMON, P LINDGREN, M LISS, TM LOCKYER, N LORETI, M LOW, EH LUCCHESI, D LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MANGANO, M MARRINER, JP MARIOTTI, M MARKELOFF, R MARKOSKY, LA MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MENZIONE, A MESCHI, E MEYER, T MIKAMO, S MILLER, M MIMASHI, T MISCETTI, S MISHINA, M MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NG, JST NINOMIYA, M NODULMAN, L OGAWA, S PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARA, A PARE, E PARK, S PATRICK, J PAULETTA, G PESCARA, L PHILLIPS, TJ PIACENTINO, AG PLUNKETT, R PONDROM, L PROUDFOOT, J PTOHOS, F PUNZI, G QUARRIE, D RAGAN, K REDLINGER, G RHOADES, J ROACH, M RIMONDI, F RISTORI, L ROBERTSON, WJ RODRIGO, T ROHALY, T ROODMAN, A SAKUMOTO, WK SANSONI, A SARD, RD SAVOYNAVARRO, A SCARPINE, V SCHLABACH, P SCHMIDT, EE SCHNEIDER, O SCHUB, MH SCHWITTERS, R SCIACCA, G SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SHAPIRO, M SHAW, NM SHEAFF, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPAHN, M SPHICAS, P SPIES, A STDENIS, R STANCO, L STEFANINI, A SULLIVAN, G SUMOROK, K SWARTZ, RL TAKANO, M TAKIKAWA, K TAREM, S TARTARELLI, F TETHER, S THERIOT, D TIMKO, M TIPTON, P TKACZYK, S TOLLESTRUP, A TONNISON, J TRISCHUK, W TSAY, Y TSENG, J TURINI, N UKEGAWA, F UNDERWOOD, D VEJCIK, S VIDAL, R WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WALSH, J WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WHITE, SN WICKLUND, AB WICKLUND, E WILLIAMS, HH WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YOH, J YOKOYAMA, M YUN, JC ZANETTI, A ZETTI, F ZHANG, S ZHANG, W ZUCCHELLI, S AF ABE, F ALBROW, M AMIDEI, D ANWAYWIESE, C APOLLINARI, G ATAC, M AUCHINCLOSS, P AZZI, P BACCHETTA, N BADEN, AR BADGETT, W BAILEY, MW BAMBERGER, A DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BERETVAS, A BERGE, JP BERTOLUCCI, S BIERY, K BHADRA, S BINKLEY, M BISELLO, D BLAIR, R BLOCKER, C BODEK, A BOLOGNESI, V BOOTH, AW BOSWELL, C BRANDENBURG, G BROWN, D BUCKLEYGEER, E BUDD, HS BUSETTO, G BYONWAGNER, A BYRUM, KL CAMPAGNARI, C CAMPBELL, M CANER, A CAREY, R CARITHERS, W CARLSMITH, D CARROLL, JT CASHMORE, R CASTRO, A CEN, Y CERVELLI, F CHADWICK, K CHAPMAN, J CHIARELLI, G CHINOWSKY, W CIHANGIR, S CLARK, AG COBAL, M CONNOR, D CONTRERAS, M COOPER, J CORDELLI, M CRANE, D CUNNINGHAM, JD DAY, C DEJONGH, F DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DERWENT, PF DEVLIN, T DICKSON, M DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENO, S ERREDE, S ETCHEGOYEN, A FARHAT, B FELDMAN, GJ FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRISCH, H FUESS, T FUKUI, Y GAGLIARDI, G GARFINKEL, AF GAUTHIER, A GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GLADNEY, L GOLD, M GONZALEZ, J GOSHAW, A GOULIANOS, K GRASSMANN, H GRIECO, GM GRINDLEY, R GROSSOPILCHER, C HABER, C HAHN, SR HANDLER, R HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HESSING, T HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUBBARD, B HUFFMAN, BT HUGHES, R HURST, P HUTH, J HYLEN, J INCAGLI, M INO, T ISO, H JENSEN, H JESSOP, CP JOHNSON, RP JOSHI, U KADEL, RW KAMON, T KANDA, S KARDELIS, DA KARLINER, I KEARNS, E KEEBLE, L KEPHART, R KESTEN, P KEUP, RM KEUTELIAN, H KIM, D KIM, SB KIM, SH KIM, YK KIRSCH, L KONDO, K KONIGSBERG, J KORDAS, K KOVACS, E KRASBERG, M KUHLMANN, SE KUNS, E LAASANEN, AT LAMMEL, S LAMOUREUX, JI LEONE, S LEWIS, JD LI, W LIMON, P LINDGREN, M LISS, TM LOCKYER, N LORETI, M LOW, EH LUCCHESI, D LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MANGANO, M MARRINER, JP MARIOTTI, M MARKELOFF, R MARKOSKY, LA MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MENZIONE, A MESCHI, E MEYER, T MIKAMO, S MILLER, M MIMASHI, T MISCETTI, S MISHINA, M MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NG, JST NINOMIYA, M NODULMAN, L OGAWA, S PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARA, A PARE, E PARK, S PATRICK, J PAULETTA, G PESCARA, L PHILLIPS, TJ PIACENTINO, AG PLUNKETT, R PONDROM, L PROUDFOOT, J PTOHOS, F PUNZI, G QUARRIE, D RAGAN, K REDLINGER, G RHOADES, J ROACH, M RIMONDI, F RISTORI, L ROBERTSON, WJ RODRIGO, T ROHALY, T ROODMAN, A SAKUMOTO, WK SANSONI, A SARD, RD SAVOYNAVARRO, A SCARPINE, V SCHLABACH, P SCHMIDT, EE SCHNEIDER, O SCHUB, MH SCHWITTERS, R SCIACCA, G SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SHAPIRO, M SHAW, NM SHEAFF, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPAHN, M SPHICAS, P SPIES, A STDENIS, R STANCO, L STEFANINI, A SULLIVAN, G SUMOROK, K SWARTZ, RL TAKANO, M TAKIKAWA, K TAREM, S TARTARELLI, F TETHER, S THERIOT, D TIMKO, M TIPTON, P TKACZYK, S TOLLESTRUP, A TONNISON, J TRISCHUK, W TSAY, Y TSENG, J TURINI, N UKEGAWA, F UNDERWOOD, D VEJCIK, S VIDAL, R WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WALSH, J WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WHITE, SN WICKLUND, AB WICKLUND, E WILLIAMS, HH WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YOH, J YOKOYAMA, M YUN, JC ZANETTI, A ZETTI, F ZHANG, S ZHANG, W ZUCCHELLI, S TI OBSERVATION OF RAPIDITY GAPS IN (P)OVER-BAR-P COLLISIONS AT 1.8 TEV SO PHYSICAL REVIEW LETTERS LA English DT Article ID EVENTS; DISTRIBUTIONS; SCATTERING; PHYSICS; ENERGY C1 ARGONNE NATL LAB,ARGONNE,IL 60439. BRANDEIS UNIV,WALTHAM,MA 02254. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV CHICAGO,CHICAGO,IL 60637. DUKE UNIV,DURHAM,NC 27706. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY. HARVARD UNIV,CAMBRIDGE,MA 02138. MCGILL UNIV,INST PARTICLE PHYS,MONTREAL,PQ,CANADA. UNIV TORONTO,TORONTO,ON,CANADA. JOHNS HOPKINS UNIV,BALTIMORE,MD 21218. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. MIT,CAMBRIDGE,MA 02139. UNIV MICHIGAN,ANN ARBOR,MI 48109. UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. UNIV PADUA,INST NAZL FIS NUCL,I-35131 PADUA,ITALY. UNIV PENN,PHILADELPHIA,PA 19104. UNIV PITTSBURGH,PITTSBURGH,PA 15260. UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY. SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY. PURDUE UNIV,W LAFAYETTE,IN 47907. UNIV ROCHESTER,ROCHESTER,NY 14627. ROCKEFELLER UNIV,NEW YORK,NY 10021. RUTGERS STATE UNIV,PISCATAWAY,NJ 08854. TEXAS A&M UNIV,COLLEGE STN,TX 77843. UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN. TUFTS UNIV,MEDFORD,MA 02155. UNIV WISCONSIN,MADISON,WI 53706. UNIV ILLINOIS,URBANA,IL 61801. RP ABE, F (reprint author), NATL LAB HIGH ENERGY PHYS,1-1 OHO,TSUKUBA,IBARAKI 305,JAPAN. RI St.Denis, Richard/C-8997-2012; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014 OI Chiarelli, Giorgio/0000-0001-9851-4816; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Warburton, Andreas/0000-0002-2298-7315; NR 22 TC 90 Z9 90 U1 0 U2 0 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 FEB 6 PY 1995 VL 74 IS 6 BP 855 EP 859 DI 10.1103/PhysRevLett.74.855 PG 5 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700007 ER PT J AU DATZ, S SUNDSTROM, G BIEDERMANN, C BROSTROM, L DANARED, H MANNERVIK, S MOWAT, JR LARSSON, M AF DATZ, S SUNDSTROM, G BIEDERMANN, C BROSTROM, L DANARED, H MANNERVIK, S MOWAT, JR LARSSON, M TI BRANCHING-PROCESSES IN THE DISSOCIATIVE RECOMBINATION OF H-3(+) SO PHYSICAL REVIEW LETTERS LA English DT Article ID RYDBERG STATES; TRIATOMIC HYDROGEN; STORAGE-RING; H-3+; PREDISSOCIATION C1 ROYAL INST TECHNOL, DEPT PHYS 1, S-10044 STOCKHOLM, SWEDEN. UNIV STOCKHOLM, MANNE SIEGBAHN LAB, S-10405 STOCKHOLM, SWEDEN. N CAROLINA STATE UNIV, DEPT PHYS, RALEIGH, NC 27695 USA. RP DATZ, S (reprint author), OAK RIDGE NATL LAB, DIV PHYS, POB 2008, OAK RIDGE, TN 37831 USA. NR 28 TC 136 Z9 136 U1 0 U2 3 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 FEB 6 PY 1995 VL 74 IS 6 BP 896 EP 899 DI 10.1103/PhysRevLett.74.896 PG 4 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700017 ER PT J AU BLACKBURN, JA GRONBECHJENSEN, N SMITH, HJT AF BLACKBURN, JA GRONBECHJENSEN, N SMITH, HJT TI STOCHASTIC NOISE AND CHAOTIC TRANSIENTS SO PHYSICAL REVIEW LETTERS LA English DT Article ID PARAMETRICALLY DAMPED PENDULUM; INDUCED ESCAPE; INVERTED PENDULUM; ATTRACTORS; CRISES C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM. UNIV WATERLOO,DEPT PHYS,WATERLOO,ON N2L 3G1,CANADA. RP BLACKBURN, JA (reprint author), WILFRID LAURIER UNIV,DEPT PHYS & COMP,WATERLOO,ON N2L 3C5,CANADA. NR 21 TC 19 Z9 20 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 FEB 6 PY 1995 VL 74 IS 6 BP 908 EP 911 DI 10.1103/PhysRevLett.74.908 PG 4 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700020 ER PT J AU MORRIS, JR HO, KM AF MORRIS, JR HO, KM TI CALCULATING ACCURATE FREE-ENERGIES OF SOLIDS DIRECTLY FROM SIMULATIONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID STRUCTURAL PHASE-TRANSITION; SHAPE-MEMORY ALLOYS; MOLECULAR-DYNAMICS; ENTROPY CHANGE; MINIMIZATION; FCC RP MORRIS, JR (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,US DOE,AMES LAB,AMES,IA 50011, USA. RI Morris, J/I-4452-2012 OI Morris, J/0000-0002-8464-9047 NR 20 TC 12 Z9 12 U1 0 U2 7 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 FEB 6 PY 1995 VL 74 IS 6 BP 940 EP 943 DI 10.1103/PhysRevLett.74.940 PG 4 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700028 ER PT J AU RAVIKUMAR, V WOLF, D DRAVID, VP AF RAVIKUMAR, V WOLF, D DRAVID, VP TI FERROELECTRIC MONOLAYER RECONSTRUCTION OF THE SRTIO3 (100) SURFACE SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRONIC-STRUCTURE; RELAXATION C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP RAVIKUMAR, V (reprint author), NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60201, USA. RI Dravid, Vinayak/B-6688-2009 NR 17 TC 64 Z9 64 U1 1 U2 12 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 6 PY 1995 VL 74 IS 6 BP 960 EP 963 DI 10.1103/PhysRevLett.74.960 PG 4 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700033 ER PT J AU OLSON, CG WU, X CHEN, ZL LYNCH, DW AF OLSON, CG WU, X CHEN, ZL LYNCH, DW TI NEW METASTABLE NONMETALLIC PHASE OF EUROPIUM SO PHYSICAL REVIEW LETTERS LA English DT Article ID LOSS SPECTROSCOPY; METALS; EU; PHOTOEMISSION; GD; SUPERLATTICE; EXCITATIONS; EPITAXY; GROWTH C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. RP OLSON, CG (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011, USA. NR 26 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD FEB 6 PY 1995 VL 74 IS 6 BP 992 EP 995 DI 10.1103/PhysRevLett.74.992 PG 4 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700041 ER PT J AU LAMMERT, PE ROKHSAR, DS CHAKRAVARTY, S KIVELSON, S SALKOLA, MI AF LAMMERT, PE ROKHSAR, DS CHAKRAVARTY, S KIVELSON, S SALKOLA, MI TI METALLIC SCREENING AND CORRELATION-EFFECTS IN SUPERCONDUCTING FULLERENES SO PHYSICAL REVIEW LETTERS LA English DT Article ID DOPED FULLERENES; C-60; MODEL C1 UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP LAMMERT, PE (reprint author), ECOLE SUPER PHYS & CHIM IND VILLE PARIS,PHYSICOCHIM THEOR GRP,VILLE PARIS,F-75231 PARIS 05,FRANCE. NR 18 TC 26 Z9 26 U1 0 U2 0 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 FEB 6 PY 1995 VL 74 IS 6 BP 996 EP 999 DI 10.1103/PhysRevLett.74.996 PG 4 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700042 ER PT J AU BALATSKY, AV ABRAHAMS, E AF BALATSKY, AV ABRAHAMS, E TI ODD-TIME MAGNETIC CORRELATIONS AND CHIRAL SPIN NEMATICS SO PHYSICAL REVIEW LETTERS LA English DT Article ID SINGLET SUPERCONDUCTORS; STATES C1 RUTGERS STATE UNIV,SERIN PHYS LAB,PISCATAWAY,NJ 08855. LD LANDAU THEORET PHYS INST,MOSCOW,RUSSIA. RP BALATSKY, AV (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 12 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 FEB 6 PY 1995 VL 74 IS 6 BP 1004 EP 1007 DI 10.1103/PhysRevLett.74.1004 PG 4 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700044 ER PT J AU TRIVEDI, N MAKIVIC, M AF TRIVEDI, N MAKIVIC, M TI DISORDERED BOSONS - CRITICAL PHENOMENA AND EVIDENCE FOR NEW LOW-ENERGY EXCITATIONS - REPLY SO PHYSICAL REVIEW LETTERS LA English DT Note ID SUPERFLUID-INSULATOR TRANSITION C1 SYRACUSE UNIV,NPAC,SYRACUSE,NY 13244. RP TRIVEDI, N (reprint author), ARGONNE NATL LAB,MSD-223,ARGONNE,IL 60439, USA. NR 5 TC 9 Z9 9 U1 0 U2 0 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 FEB 6 PY 1995 VL 74 IS 6 BP 1039 EP 1039 DI 10.1103/PhysRevLett.74.1039 PG 1 WC Physics, Multidisciplinary SC Physics GA QE487 UT WOS:A1995QE48700058 ER PT J AU SHAH, NN HANNA, ML JACKSON, KJ TAYLOR, RT AF SHAH, NN HANNA, ML JACKSON, KJ TAYLOR, RT TI BATCH CULTIVATION OF METHYLOSINUS-TRICHOSPORIUM OB3B .4. PRODUCTION OF HYDROGEN-DRIVEN SOLUBLE OR PARTICULATE METHANE MONOOXYGENASE ACTIVITY SO BIOTECHNOLOGY AND BIOENGINEERING LA English DT Article DE METHANOTROPH; METHANE MONOOXYGENASE; NITROGENASE; HYDROGENASE; BATCH CULTURE CONDITIONS ID IMMOBILIZED WHOLE CELLS; GAS-SOLID BIOREACTOR; OXIDIZING BACTERIUM; TRICHLOROETHYLENE DEGRADATION; NITROGENASE ACTIVITY; PROPYLENE-OXIDE; MONO-OXYGENASE; OXIDATION; METHANOTROPHS; ACCUMULATION AB Batch culture conditions were established for the formation of H-2-driven whore-cell soluble or particulate methane monooxygenase (sMMO or pMMO) activity in the obligate methanotroph, Methylosinus trichosporium Ob3b, to expand its potential uses in groundwater bioremediation and the production of specific chemicals. Addition of either Ni and H-2 to a nitrate-containing minimal salts growth medium or Ni and Mo to a nitrate-lacking growth medium (induces a nitrogenase that generates intracellular H-2) markedly enhanced both the hydrogenase and the accompanying washed-cell H-2-driven MMO activities of shake-flask cultured cells. For sMMO containing cells, H-2 provided in vitro reducing power for the oxidation of chlorinated solvents such as chloroform and trichloroethylene. Cell cultivations under N-2-fixing conditions in a 5-L bioreactor, however, required an initial nitrate concentration of at least 1 to 2 mM to achieve high biomass yields (5 to 7 g of dry cell wt/L) for cells producing H-2-driven sMMO or pMMO activity. Elevation of the initial medium nitrate concentration to 20 mM shortened the culture time for pMMO producing cells by 40%, yet still generated an equivalent growth yield. High nitrate also shortened the culture time for sMMO containing cells by similar to 25%, but it lowered their biomass yield by 26%. Upon storage for 5 weeks at room temperature, washed resting-state cells retained 90% and 70% of their H-2-driven sMMO and pMMO activity, respectively. This makes their practical use quite feasible. (C) 1995 John Wiley and Sons, Inc. C1 LAWRENCE LIVERMORE NATL LAB,BIOL & BIOTECHNOL RES PROGRAM,LIVERMORE,CA 94550. LAWRENCE LIVERMORE NATL LAB,DIV EARTH SCI,LIVERMORE,CA. RI jackson, Kenneth/E-2236-2013 OI jackson, Kenneth/0000-0003-4231-3809 NR 43 TC 21 Z9 22 U1 4 U2 14 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0006-3592 J9 BIOTECHNOL BIOENG JI Biotechnol. Bioeng. PD FEB 5 PY 1995 VL 45 IS 3 BP 229 EP 238 DI 10.1002/bit.260450307 PG 10 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA QH348 UT WOS:A1995QH34800006 PM 18623142 ER PT J AU SKEEN, RS VALENTINE, NB HOOKER, BS PETERSEN, JN AF SKEEN, RS VALENTINE, NB HOOKER, BS PETERSEN, JN TI KINETICS OF NITRATE INHIBITION OF CARBON-TETRACHLORIDE TRANSFORMATION BY A DENITRIFYING CONSORTIA SO BIOTECHNOLOGY AND BIOENGINEERING LA English DT Note DE CARBON TETRACHLORIDE; NITRATE INHIBITION; BIODEGRADATION; KINETICS ID SP STRAIN KC; DENITRIFICATION CONDITIONS; ORGANIC-COMPOUNDS; TETRACHLOROMETHANE AB The kinetics of nitrate inhibition of carbon tetrachloride (CT) transformation were examined using a denitrifying consortium. Comparison of data from fed-batch experiments to the model reported by Hooker et al. indicate that the inhibition constant ranges between 3.2 and 21 mg/L, with an average of 8.8 mg/L. This range is much lower than the previously reported value of 169 mg/L. Simulations using the corrected parameter accurately reflect this new data and the data reported by Hooker et al. In contrast, the earlier reported coefficient value does not reflect the data reported in this work. (C) 1995 John Wiley and Sons, Inc. C1 WASHINGTON STATE UNIV, DEPT CHEM ENGN, PULLMAN, WA 99164 USA. RP SKEEN, RS (reprint author), PACIFIC NW LAB, CTR ENGN TECHNOL, RICHLAND, WA 99352 USA. RI Petersen, James/B-8924-2008 NR 17 TC 3 Z9 3 U1 1 U2 2 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0006-3592 J9 BIOTECHNOL BIOENG JI Biotechnol. Bioeng. PD FEB 5 PY 1995 VL 45 IS 3 BP 279 EP 284 DI 10.1002/bit.260450314 PG 6 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA QH348 UT WOS:A1995QH34800013 PM 18623149 ER PT J AU LIN, Y JONAH, CD AF LIN, Y JONAH, CD TI COMPUTER-SIMULATION OF SOLVATION DYNAMICS IN SEVERAL MODEL SOLVENTS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID BENZOPHENONE ANION SOLVATION; NONEQUILIBRIUM SOLVATION; POLAR; ELECTRONS AB The effect on solvation dynamics and energetics of the length and charge distribution of a model linear solvent has been determined. Solvent clustering around the ion is independent of the solvent molecule length if the solvent dipole terminus is attracted to the charged solute. In contrast, if they repel, the structure around the solute ion depends on the length of the solvent molecules and on the solute charge. The calculated solvation dynamics has two components and depends on solvent structure. The fraction of the fast relaxation component decreases with the length of the solvent molecules. RP LIN, Y (reprint author), ARGONNE NATL LAB, DIV CHEM, 9700 S CASS AVE, ARGONNE, IL 60439 USA. NR 23 TC 6 Z9 6 U1 0 U2 1 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 FEB 3 PY 1995 VL 233 IS 1-2 BP 138 EP 144 DI 10.1016/0009-2614(94)01421-Q PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QE868 UT WOS:A1995QE86800025 ER PT J AU TANG, J NORRIS, JR AF TANG, J NORRIS, JR TI MULTIPLE-QUANTUM EPR COHERENCE IN A SPIN-CORRELATED RADICAL PAIR SYSTEM SO CHEMICAL PHYSICS LETTERS LA English DT Article ID PHOTOSYNTHETIC REACTION CENTERS; THEORETICAL CALCULATIONS; SELECTIVE EXCITATION; TRANSIENT EPR; POLARIZATION; NMR; RESONANCE; MODEL AB Multiple-quantum EPR coherence phenomena in a photo-induced spin-correlated radical pair system are examined. Because of the special singlet-triplet mixing mechanism, we have proposed a phase-cycled two-pulse sequence to excite and detect the single-quantum as well as the normally forbidden zero- and double-quantum transitions. Complementary to the method of electron spin echo modulation, this technique can also provide useful structural information about electron-electron exchange and dipolar interactions, in addition to the Zeeman and nuclear hyperfine interactions. Analytical expressions are derived for the multiple-quantum signals. RP TANG, J (reprint author), ARGONNE NATL LAB,DIV CHEM,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Tang, Jau/D-8382-2012 OI Tang, Jau/0000-0003-2078-1513 NR 34 TC 22 Z9 24 U1 2 U2 7 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 FEB 3 PY 1995 VL 233 IS 1-2 BP 192 EP 200 DI 10.1016/0009-2614(94)01435-X PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QE868 UT WOS:A1995QE86800033 ER PT J AU EGGLESTON, AK ONEILL, TE BRADBURY, EM KOWALCZYKOWSKI, SC AF EGGLESTON, AK ONEILL, TE BRADBURY, EM KOWALCZYKOWSKI, SC TI UNWINDING OF NUCLEOSOMAL DNA BY A DNA HELICASE SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID COLI RECBCD ENZYME; HOMOLOGOUS PAIRING INVITRO; T7 RNA-POLYMERASE; ESCHERICHIA-COLI; DUPLEX DNA; RECOMBINATION HOTSPOT; SACCHAROMYCES-CEREVISIAE; SUBSTRATE-SPECIFICITY; RECB(2109)CD ENZYME; NUCLEASE ACTIVITY AB We have asked whether a DNA helicase can unwind DNA contained within both isolated native chromatin and reconstituted chromatin containing regularly spaced arrays of nucleosome cores on a linear tandem repeat sequence, We find that Escherichia coli recBCD enzyme is capable of unwinding these DNA substrates and displacing the nucleosomes, although both the rate and the processivity of enzymatic unwinding are inhibited (a maximum of 3- and >25-fold, respectively) as the nucleosome density on the template is increased. The observed rate of unwinding is not affected if the histone octamer is chemically cross-linked; thus, dissociation, or splitting, of the histone octamer is not required for unwinding to occur, The unwinding of native chromatin isolated from HeLa cell nuclei occurs both in the absence and in the presence of linker histone H1, These results suggest that as helicases unwind DNA, they facilitate nuclear processes by acting to clear DNA of histones or DNA-binding proteins in general. C1 UNIV CALIF DAVIS,MICROBIOL SECT,DAVIS,CA 95616. UNIV CALIF DAVIS,MOLEC & CELLULAR BIOL SECT,DAVIS,CA 95616. UNIV CALIF DAVIS,DEPT BIOL CHEM,DAVIS,CA 95616. LOS ALAMOS NATL LAB,DIV LIFE SCI,LOS ALAMOS,NM 87545. OI Eggleston, Angela/0000-0001-8682-397X FU NIGMS NIH HHS [GM-26901, GM-41347] NR 53 TC 31 Z9 31 U1 1 U2 1 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD FEB 3 PY 1995 VL 270 IS 5 BP 2024 EP 2031 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QE493 UT WOS:A1995QE49300009 PM 7836428 ER PT J AU CATASTI, P FONTENOT, JD BRADBURY, E GUPTA, G AF CATASTI, P FONTENOT, JD BRADBURY, E GUPTA, G TI LOCAL AND GLOBAL STRUCTURAL-PROPERTIES OF THE HIV-MN V3 LOOP SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID HUMAN-IMMUNODEFICIENCY-VIRUS; PRINCIPAL NEUTRALIZING DETERMINANT; ENVELOPE GLYCOPROTEIN; CELL TROPISM; TYPE-1; ANTIBODIES; SEQUENCE; DOMAIN; GP120; IDENTIFICATION AB Studies of the feasibility of a subunit vaccine to protect against human immunodeficiency virus (HIV) infection have principally focused on the third variable (V3) loop, The principal neutralizing determinant (PND) of HIV-1 is located inside the V3 loop of the surface envelope glycoprotein, gp120. However, progress toward a PND-based vaccine has been impeded by the amino acid sequence variability in the V3 loops of different HN isolates, Theoretical studies revealed that the variability in sequence and structure of the V3 loop is confined to the N- and C-terminal sides of the conserved GPG crest, This leaves three regions of the V3 loop conserved both in sequence and secondary structure, We present the results of NMR studies that test the validity of our theoretical predictions. Structural studies are reported for the HIV-V3 loop (HIV-MN) in the linear and cyclic (S-S-bridged) forms. For the V3 loop sequence of the HIV-MN isolate, the three conserved secondary structural elements are as underlined below: CTRPNYNKRKRIHIGPGRAFYTTKNIIGTIROAHC(turns, turn helix) Finally, the conformational requirement of the PND in the V3 loop-antibody interaction is tested by monitoring the monoclonal antibody binding to the HIV-MN V3 loop in the linear and cyclic forms by enzyme-linked immunosorbent assay, The binding data reveal that the cyclic V3 loop is a better ligand for the monoclonal antibodies than the linear form although the latter has the same sequence. This means that the monoclonal antibodies recognize the PNDs as conformational epitopes. C1 LOS ALAMOS NATL LAB,THEORET BIOL & BIOPHYS GRP,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV LS,LOS ALAMOS,NM 87545. UNIV CALIF DAVIS,SCH MED,DEPT BIOL CHEM,DAVIS,CA 95616. FU NCRR NIH HHS [RR04795]; NIAID NIH HHS [R01 AI32891-01A2] NR 26 TC 81 Z9 83 U1 0 U2 1 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD FEB 3 PY 1995 VL 270 IS 5 BP 2224 EP 2232 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QE493 UT WOS:A1995QE49300039 PM 7836454 ER PT J AU DUMONT, PJ FRITZ, JS AF DUMONT, PJ FRITZ, JS TI EFFECT OF RESIN SULFONATION ON THE RETENTION OF POLAR ORGANIC-COMPOUNDS IN SOLID-PHASE EXTRACTION SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article; Proceedings Paper CT 18th International Symposium on Column Liquid Chromatography CY MAY 08-13, 1994 CL MINNEAPOLIS, MN ID WATER; SORBENTS AB The hydrophobic nature of polymeric resins used in solid-phase extraction (SPE) often limits their efficiency by preventing intimate surface contact with aqueous samples. A polymeric resin modified by a series of chemical derivatizations with sulfuric acid was found to display excellent surface hydrophilicity and improved extraction efficiencies. The degree of sulfonation was found to play a vital role in determining the SPE efficiency of such resins. By measuring the capacity factor of several polar organic solutes in pure water, an optimum sulfonation capacity of 0.6 mequiv./g was determined. Loose sulfonated resin and Empore membranes embedded with sulfonated resin were used for SPE. Average recoveries were greater than 95% for both types of sulfonated resin for a wide variety of organic compounds including phenols, alcohols, nitro compounds, aldehydes, esters and halogenated alkanes. Breakthrough curves for p-cresol, ethyl acetoacetate, isophorone and nitrobenzene were used to compare Empore membranes embedded with sulfonated and unsulfonated resin. The sulfonated membrane yielded sharper and more efficient breakthrough for all compounds tested. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. RP DUMONT, PJ (reprint author), US DOE,AMES LAB,AMES,IA 50011, USA. NR 16 TC 76 Z9 76 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD FEB 3 PY 1995 VL 691 IS 1-2 BP 123 EP 131 DI 10.1016/0021-9673(94)00766-3 PG 9 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA QG491 UT WOS:A1995QG49100012 ER PT J AU FRITZ, JS DUMONT, PJ SCHMIDT, LW AF FRITZ, JS DUMONT, PJ SCHMIDT, LW TI METHODS AND MATERIALS FOR SOLID-PHASE EXTRACTION SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article; Proceedings Paper CT 18th International Symposium on Column Liquid Chromatography CY MAY 08-13, 1994 CL MINNEAPOLIS, MN ID PERFORMANCE LIQUID-CHROMATOGRAPHY; TRACE ORGANIC CONTAMINANTS; MODIFIED POLYMERIC RESINS; MACRORETICULAR RESINS; WATER AB Solid-phase extraction (SPE) with porous solid particles goes back to the early 1970s. However, SPE has become more popular recently due to the availability of more efficient particles and the need to replace liquid extraction procedures that require the use of large quantities of organic solvents. Chemical introduction of acetyl or hydroxymethyl groups into polymeric resins improves the efficiency of SPE by providing better surface contact with aqueous samples. Lightly sulfonated resins display excellent hydrophilicity and improved extraction efficiencies of polar organic compounds over underivatized resins. It is shown that the degree of sulfonation has a major effect on retention of such compounds. Sulfonated resins can also be used for group separation of neutral and basic organic compounds. The advantages of performing SPE with resin-loaded membranes is discussed. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. RP FRITZ, JS (reprint author), US DOE,AMES LAB,AMES,IA 50011, USA. NR 17 TC 90 Z9 92 U1 1 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD FEB 3 PY 1995 VL 691 IS 1-2 BP 133 EP 140 DI 10.1016/0021-9673(94)00756-Y PG 8 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA QG491 UT WOS:A1995QG49100013 ER PT J AU GOLDMAN, E ROSENBERG, AH ZUBAY, G STUDIER, FW AF GOLDMAN, E ROSENBERG, AH ZUBAY, G STUDIER, FW TI CONSECUTIVE LOW-USAGE LEUCINE CODONS BLOCK TRANSLATION ONLY WHEN NEAR THE 5' END OF A MESSAGE IN ESCHERICHIA-COLI SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE CODON USAGE; CODON REPEATS; TRANSLATIONAL ACCURACY; RIBOSOMES; T7 VECTORS ID PROTEIN-SYNTHESIS; GENE-EXPRESSION; TRANSFER-RNAS; AGG CODONS; TRANSCRIPTION; SUPPRESSION; EFFICIENCY; FRAMESHIFT; RIBOSOMES; SEQUENCE AB Insertion of nine consecutive low-usage CUA leucine codons after codon 13 of a 313-codon test mRNA strongly inhibited its translation without apparent effect on translation of other mRNAs containing CUA codons. In contrast, nine consecutive high-usage CUG leucine codons at the same position had no apparent effect, and neither low- nor high-usage codons affected translation when inserted after codon 223 or 307. Additional experiments indicated that the strong positional effect of the low-usage codons could not be accounted for by differences in stability of the mRNAs or in stringency of selection of the correct tRNA. The positional effect could be explained if translation complexes are less stable near the beginning of a message: slow translation through low-usage codons early in the message may allow most translation complexes to dissociate before they read through. C1 BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973. COLUMBIA UNIV,FAIRCHILD CTR BIOL SCI,NEW YORK,NY 10027. RP GOLDMAN, E (reprint author), UNIV MED & DENT NEW JERSEY,NEW JERSEY MED SCH,DEPT MICROBIOL & MOLEC GENET,185 S ORANGE AVE,NEWARK,NJ 07103, USA. FU NIGMS NIH HHS [GM27711] NR 27 TC 127 Z9 136 U1 0 U2 2 PU ACADEMIC PRESS (LONDON) LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD FEB 3 PY 1995 VL 245 IS 5 BP 467 EP 473 DI 10.1006/jmbi.1994.0038 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QE940 UT WOS:A1995QE94000002 PM 7844820 ER PT J AU XIE, P GOSNELL, TR AF XIE, P GOSNELL, TR TI EFFICIENT SENSITIZATION OF PRAESODYMIUM 1.31-MU-M FLUORESCENCE BY OPTICALLY PUMPED YTTERBIUM IONS IN ZBLAN GLASS SO ELECTRONICS LETTERS LA English DT Article DE FIBER LASERS; RARE-EARTH DOPED FIBERS; FLOURIDE GLASSES FLUORESCENCE ID PR3+-DOPED FLUORIDE FIBER; 1.3-MU-M AMPLIFICATION; MU-M; GAIN; AMPLIFIERS AB The authors report efficient population of the (1)G(4) level of trivalent praseodymium by radiationless energy transfer from trivalent ytterbium ions optically pumped at 980 nm. Subsequent fluorescence at 1.31 mu m is optimised in a ZBLAN host for concentrations of 0.3 wt% pr(3+) and 2 wt% Yb3+. The quantum efficiency for conversion of an excited Yb3+ ion to an excited Pr3+ ion at these dopant concentrations is determined to be 56%. RP XIE, P (reprint author), LOS ALAMOS NATL LAB,MAIL STOP E535,LOS ALAMOS,NM 87545, USA. NR 7 TC 12 Z9 12 U1 0 U2 1 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD FEB 2 PY 1995 VL 31 IS 3 BP 191 EP 192 DI 10.1049/el:19950120 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA QJ397 UT WOS:A1995QJ39700034 ER PT J AU CRAWFORD, MH SCHNEIDER, RP CHOQUETTE, KD LEAR, KL KILCOYNE, SP FIGIEL, JJ AF CRAWFORD, MH SCHNEIDER, RP CHOQUETTE, KD LEAR, KL KILCOYNE, SP FIGIEL, JJ TI HIGH-EFFICIENCY ALGAINP-BASED 660-680 NM VERTICAL-CAVITY SURFACE-EMITTING LASERS SO ELECTRONICS LETTERS LA English DT Article DE VERTICAL CAVITY SURFACE EMITTING LASERS; VISIBLE SEMICONDUCTOR LASERS AB Record continuous-wave output power of 2.9 mW and 10% peak wallplug efficiency have been achieved from planar gain guided AlGaInP-based vertical-cavity surface emitting lasers. These results represent nearly an order of magnitude improvement in performance over previous AlGaInP-based vertical-cavity lasers. RP CRAWFORD, MH (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 6 TC 12 Z9 12 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD FEB 2 PY 1995 VL 31 IS 3 BP 196 EP 198 DI 10.1049/el:19950124 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA QJ397 UT WOS:A1995QJ39700038 ER PT J AU LEAR, KL CHOQUETTE, KD SCHNEIDER, RP KILCOYNE, SP GEIB, KM AF LEAR, KL CHOQUETTE, KD SCHNEIDER, RP KILCOYNE, SP GEIB, KM TI SELECTIVELY OXIDIZED VERTICAL-CAVITY SURFACE-EMITTING LASERS WITH 50-PERCENT POWER CONVERSION EFFICIENCY SO ELECTRONICS LETTERS LA English DT Article DE VERTICAL CAVITY SURFACE EMITTING LASERS; LASERS ID WELL-HETEROSTRUCTURE LASERS; OPERATION AB Index-guided vertical cavity top-surface emitting laser diodes have been fabricated from an ail epitaxial structure with conducting mirrors by selective lateral oxidation of AlGaAs. Low voltage. a 78% slope efficiency, and a 350 mu A threshold current in a single device combine to yield a maximum power conversion efficiency of 50% at less than a 2 mA drive current. The device operates in a single mode up to 1.5 mW. RP LEAR, KL (reprint author), SANDIA NATL LABS,PHOTON RES DEPT 1312,MS 0603,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 18 TC 284 Z9 292 U1 2 U2 8 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD FEB 2 PY 1995 VL 31 IS 3 BP 208 EP 209 DI 10.1049/el:19950125 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA QJ397 UT WOS:A1995QJ39700046 ER PT J AU KYRLIDIS, A COOK, SJ CHAKRABORTY, AK BELL, AT THEODOROU, DN AF KYRLIDIS, A COOK, SJ CHAKRABORTY, AK BELL, AT THEODOROU, DN TI ELECTRONIC-STRUCTURE CALCULATIONS OF AMMONIA ADSORPTION IN H-ZSM-5 ZEOLITES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID TEMPERATURE-PROGRAMMED DESORPTION; X-ALPHA THEORY; PROBE MOLECULES; ACID SITES; PROTON-TRANSFER; SOLID-STATE; AB-INITIO; ZSM-5; ABINITIO; CLUSTER AB The structural and electronic properties of acid sites in zeolites are important in determining their catalytic behavior. Kohn-Sham density functional theory calculations are used to probe the local environment of the acid site in realistic zeolite clusters and to study its interaction with ammonia. The long-range electrostatic effects on the adsorption are incorporated self-consistently in the electronic structure calculations. We examine their effect on the acidity of the cluster and on both the structure and the energetics of adsorption. Systematic structural relaxations of the aluminum-substituted framework show that there are significant structural rearrangements from the entirely siliceous cluster, in the vicinity of the substitution site. In the case of ammonia adsorption, the energetics of adsorption are sensitive to the structural arrangement of the ammonia. Configurations where the adsorbed molecule interacts with three lattice bridging oxygen molecules are favored. The theoretical predictions are compared to recent solid state NMR and microcalorimetry experiments. C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, CTR ADV MAT, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, DEPT CHEM ENGN, BERKELEY, CA 94720 USA. OI Theodorou, Doros/0000-0002-4763-9739; Bell, Alexis/0000-0002-5738-4645 NR 56 TC 58 Z9 59 U1 0 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD FEB 2 PY 1995 VL 99 IS 5 BP 1505 EP 1515 DI 10.1021/j100005a022 PG 11 WC Chemistry, Physical SC Chemistry GA QE856 UT WOS:A1995QE85600022 ER PT J AU MA, QF HERSCHMAN, HR AF MA, QF HERSCHMAN, HR TI THE YEAST HOMOLOG YTIS11, OF THE MAMMALIAN TIS11 GENE FAMILY IS A NONESSENTIAL, GLUCOSE REPRESSIBLE GENE SO ONCOGENE LA English DT Article DE TIS11; IMMEDIATE-EARLY GENE; YEAST; PRIMARY RESPONSE GENE ID PRIMARY RESPONSE GENE; TETRADECANOYL PHORBOL ACETATE; SWISS 3T3 CELLS; SCHIZOSACCHAROMYCES-POMBE; GROWTH-FACTORS; SACCHAROMYCES-CEREVISIAE; NUCLEOTIDE-SEQUENCE; MIG1 REPRESSOR; PROTEINS; CDNA AB The murine TIS11 primary response gene is rapidly and transiently induced in response to many extracellular signals, A CX(8)CX(5)CX(3)H sequence is present twice in the TIS11 protein, in two additional murine proteins, TIS11B and TIS11D, that share regions of strong sequence conservation with THS11, and in a Drosophila homologue (DTIS11). Although immunolocalization of TIS11 protein to the nucleus and zinc binding have lead to the speculation that the TIS11 family proteins are transcription factors, no function for these proteins has yet been clearly determined. We have now identified a TIS11 homologue, YTIS11, from Saccharomyces cerevisiae. The Ytis11p protein conserves both the two putative zinc finger CX(8)CX(5)CX(3)H sequences and the spacing between them, as web as additional amino acids in this region. The amino terminal 169 amino acid portion of Ytis11p protein, which contains a large number of acidic amino acids, can serve as transactivator when fused to the Ga14 DNA-binding domain. Expression of the YTIS11 gene is not induced in response to DNA damaging agents, heat shock, sporulation conditions, or mating factor. However, YTIS11 expression is subjected to rapid glucose repression. Disruption of the YTIS11 gene in the M12B strain of Saccharomyces cerevisiae does not effect viability, growth in rich or synthetic medium, mating, or spore formation. However, YTIS11 gene disruption causes an alteration in metabolism that is reflected by a pH color change when cells are grown on YP plates supplemented with 2% glucose. Overexpression of murine TIS11 or TIS11B proteins dramatically attenuates the growth of both ytis11 and wild-type yeast. C1 UNIV CALIF LOS ANGELES,CTR HLTH SCI,DEPT BIOL CHEM,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,CTR HLTH SCI,US DOE,STRUCT BIOL & MOLEC MED LAB,LOS ANGELES,CA 90024. FU PHS HHS [M24797] NR 33 TC 33 Z9 34 U1 2 U2 3 PU STOCKTON PRESS PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE, HANTS, ENGLAND RG21 2XS SN 0950-9232 J9 ONCOGENE JI Oncogene PD FEB 2 PY 1995 VL 10 IS 3 BP 487 EP 494 PG 8 WC Biochemistry & Molecular Biology; Oncology; Cell Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Oncology; Cell Biology; Genetics & Heredity GA QF648 UT WOS:A1995QF64800009 PM 7845673 ER PT J AU ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELESCU, T ANTONOV, L ANTREASYAN, D ALKHAZOV, G ARCE, P AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BRIGLJEVIC, V BROCK, IC BROOKS, M BUJAK, A BURGER, JD BURGER, WJ BURGOS, C BUSENITZ, J BUYTENHUIJS, A BYKOV, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLO, R CAVALLO, N CERRADA, M CESARONI, F CHAMIZO, M CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, GM CHEN, HF CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CHUNG, S CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DITTMAR, M DJAMBAZOV, L DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUHEM, F DUINKER, P DURAN, I DUTTA, S EASO, S ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, JH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GUANZIROLI, CGM GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HASAN, A HAUSCHILDT, D HE, JT HEBBEKER, T HEBERT, M HERVE, A HILGERS, K HOFER, H HOORANI, H HOU, SR HU, G ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KUIJTEN, H KUMAR, KS KUNIN, A DEGUEVARA, PL LANDI, G LANSKE, D LANZANO, S LAURIKAINEN, P LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEE, JS LEE, KY LEEDOM, I LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LOHMANN, W LONGO, E LU, W LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACDERMOTT, M MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSMALEN, R ROSSELET, P VANROSSUM, W ROTH, S RUBBIA, A RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANDERS, GS SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SON, D SOPCZAK, A SOULIMOV, V SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TROWITZSCH, G TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, SX WYNHOFF, S XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHU, RY ZICHICHI, A VANDERZWAAN, BCC AF ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALCARAZ, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDERSON, AL ANDREEV, VP ANGELESCU, T ANTONOV, L ANTREASYAN, D ALKHAZOV, G ARCE, P AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKKEN, JA BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BRIGLJEVIC, V BROCK, IC BROOKS, M BUJAK, A BURGER, JD BURGER, WJ BURGOS, C BUSENITZ, J BUYTENHUIJS, A BYKOV, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLO, R CAVALLO, N CERRADA, M CESARONI, F CHAMIZO, M CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, GM CHEN, HF CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CHUNG, S CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIMITROV, HR DIONISI, C DITTMAR, M DJAMBAZOV, L DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUHEM, F DUINKER, P DURAN, I DUTTA, S EASO, S ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC EXTERMANN, P FABBRETTI, R FABRE, M FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, JH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GALLO, E GANGULI, SN GARCIAABIA, P GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GUANZIROLI, CGM GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HASAN, A HAUSCHILDT, D HE, JT HEBBEKER, T HEBERT, M HERVE, A HILGERS, K HOFER, H HOORANI, H HOU, SR HU, G ILLE, B ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KUIJTEN, H KUMAR, KS KUNIN, A DEGUEVARA, PL LANDI, G LANSKE, D LANZANO, S LAURIKAINEN, P LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEE, JS LEE, KY LEEDOM, I LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LOHMANN, W LONGO, E LU, W LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACDERMOTT, M MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSMALEN, R ROSSELET, P VANROSSUM, W ROTH, S RUBBIA, A RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANDERS, GS SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SON, D SOPCZAK, A SOULIMOV, V SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TROWITZSCH, G TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, SX WYNHOFF, S XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHU, RY ZICHICHI, A VANDERZWAAN, BCC TI ENERGY AND PARTICLE FLOW IN 3-JET AND RADIATIVE 2-JET EVENTS FROM HADRONIC Z-DECAYS SO PHYSICS LETTERS B LA English DT Article ID LUND MONTE-CARLO; E+E ANNIHILATION; 3-JET EVENTS; FRAGMENTATION MODELS; GLUON JETS; QCD; PARTON; QUARK; PHYSICS AB We report on a detailed study of the energy and particle flow in the event plane of three-jet events q(q) over barg$ and radiative two-jet events in hadronic Z decays recorded with the L3 detector. We find a significant decrease in particle and energy density in the angular region between quark and antiquark jets for q(q) over barg$ events as compared with events. Several QCD model predictions are compared with the observed effect. C1 RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY. NATL INST NUCL & HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. LAB ANNECY LE VIEUX PHYS PARTICULES, IN2P3, CNRS, F-74941 ANNECY LE VIEUX, FRANCE. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA. HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA. BOSTON UNIV, BOSTON, MA 02215 USA. NORTHEASTERN UNIV, BOSTON, MA 02115 USA. INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA. UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. MIT, CAMBRIDGE, MA 02139 USA. IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CERN, CH-1211 GENEVA 23, SWITZERLAND. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA. HIGH ENERGY PHYS RES INST, SF-00014 HELSINKI, FINLAND. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST PHYS NUCL LYON, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE. CIEMAT, E-28040 MADRID, SPAIN. INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA. UNIV NAPLES, I-80125 NAPLES, ITALY. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST NUCL & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. CALTECH, PASADENA, CA 91125 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. LENINGRAD NUCL PHYS INST, ST PETERSBURG, RUSSIA. UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA. UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN. BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA. KOREA ADV INST SCI & TECHNOL, CTR HIGH ENERGY PHYS, TAEJON 305701, SOUTH KOREA. UNIV ALABAMA, TUSCALOOSA, AL 35486 USA. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. DESY, INST HOCHENERGIEPHYS, D-15738 ZEUTHEN, GERMANY. ETH ZURICH, CH-8093 ZURICH, SWITZERLAND. UNIV HAMBURG, INST ANGEW MATH, D-22761 HAMBURG, GERMANY. HIGH ENERGY PHYS GRP, TAIPEI, TAIWAN. RP IST NAZL FIS NUCL, I-20133 MILAN, ITALY. RI Fiandrini, Emanuele/C-4549-2008; Lista, Luca/C-5719-2008; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Ludovici, Lucio/F-5917-2011; Kirkby, Jasper/A-4973-2012; Servoli, Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; de la Cruz, Begona/K-7552-2014; Josa, Isabel/K-5184-2014; Ferguson, Thomas/O-3444-2014; Berdugo, Javier/A-2858-2015; van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Sanchez, Eusebio/H-5228-2015; Duran, Ignacio/H-7254-2015; rodriguez calonge, francisco javier/H-9682-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Arce, Pedro/L-1268-2014; Roth, Stefan/J-2757-2016 OI Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ludovici, Lucio/0000-0003-1970-9960; Kirkby, Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185; Cerrada, Marcos/0000-0003-0112-1691; Ferguson, Thomas/0000-0001-5822-3731; Berdugo, Javier/0000-0002-7911-8532; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283; Arce, Pedro/0000-0003-3009-0484; Roth, Stefan/0000-0003-3616-2223 NR 33 TC 13 Z9 13 U1 1 U2 6 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. 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This technique is sensitive to modes with missing neutrals, e.g. pi(0) mu(+)mu(-) and rho(+/-)mu(+)mu(-), as well as to constrained modes having visible invariant masses equal to those of charm states. No evidence for any such decays has been found, which allows upper limits at the 90% confidence level as low as 1.8 x 10(-4) to be placed on the branching fractions for charm-changing neutral-current and lepton-number violating decay modes. C1 UNIV CALIF DAVIS,DAVIS,CA 95616. CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213. CHONNAM NATL UNIV,KWANGJU 500757,SOUTH KOREA. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. GIFU UNIV,GIFU 50111,JAPAN. GYEONGSANG NATL UNIV,JINJU 660300,SOUTH KOREA. KANSAS STATE UNIV AGR & APPL SCI,MANHATTAN,KS 66506. KINKI UNIV,OSAKA,OSAKA 577,JAPAN. KOBE UNIV,KOBE 657,JAPAN. KOREA UNIV,SEOUL 136701,SOUTH KOREA. NAGOYA INST TECHNOL,NAGOYA,AICHI 466,JAPAN. NAGOYA UNIV,NAGOYA,AICHI 464,JAPAN. OHIO STATE UNIV,COLUMBUS,OH 43210. OKAYAMA UNIV,OKAYAMA 700,JAPAN. UNIV OKLAHOMA,NORMAN,OK 73019. OSAKA CITY UNIV,OSAKA 558,JAPAN. OSAKA CITY UNIV,OSAKA 558,JAPAN. SCI EDUC INST OSAKA PREFECTURE,OSAKA 558,JAPAN. TOHO UNIV,FUNABASHI,CHIBA 274,JAPAN. UTSUNOMIYA UNIV,UTSUNOMIYA,TOCHIGI 321,JAPAN. WONKWANG UNIV,IRI 570749,SOUTH KOREA. RP KODAMA, K (reprint author), AICHI UNIV EDUC,KARIYA,AICHI 448,JAPAN. RI Russ, James/P-3092-2014; Aoki, Shigeki/L-6044-2015 OI Russ, James/0000-0001-9856-9155; NR 26 TC 27 Z9 28 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. 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KRAEMER, RW KRAMER, T KRASTEV, VR KRENZ, W KUIJTEN, H KUMAR, KS KUNIN, A DEGUEVARA, PL LANDI, G LANSKE, D LANZANO, S LAURIKAINEN, P LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, P LECOULTRE, P LEE, DM LEE, JS LEE, KY LEEDOM, I LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LOHMANN, W LONGO, E LU, W LU, YS LUBBERS, JM LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACDERMOTT, M MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCBRIDE, P MCMAHON, T MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A MILLS, GB MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLASIL, F PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QIAN, JM QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSMALEN, R ROSSELET, P VANROSSUM, W ROTH, S RUBBIA, A RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANDERS, GS SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SHOTKIN, S SCHREIBER, HJ SHUKLA, J SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SCOTT, I SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEER, I SHEVCHENKO, S SHI, XR SHUMILOV, E SHOUTKO, V SON, D SOPCZAK, A SOULIMOV, V SPARTIOTIS, C SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TROWITZSCH, G TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEBER, J WEILL, R WILLMOTT, C WITTGENSTEIN, F WRIGHT, D WU, SX WYNHOFF, S XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZEMP, P ZENG, M ZENG, Y ZHANG, DH ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHU, RY ZICHICHI, A VANDERZWAAN, BCC TI MEASUREMENT OF EXCLUSIVE BRANCHING FRACTIONS OF HADRONIC ONE-PRONG TAU-DECAYS SO PHYSICS LETTERS B LA English DT Article ID POLARIZATION; LEPTON AB We have measured the branching fractions for the hadronic tau decays, tau --> pi/K n pi(degrees) upsilon (0 less than or equal to n less than or equal to 3), with the L3 detector at LEP. Multiphoton final states are analyzed using the fine-grained, high-resolution electromagnetic calorimeter. The decay channels are identified using a neural network method. The results are: BR(tau --> pi/K upsilon) = (11.82 +/- 0.26 +/- 0.43)%, BR(tau --> pi/K pi(degrees) upsilon) = (25.05 +/- 0.35 +/- 0.50)%, BR(tau --> pi/K2 pi(degrees) upsilon) = (8.88 +/- 0.37 +/- 0.42)%, BR(tau --> pi/K3 pi(degrees) upsilon) = (1.70 +/- 0.24 +/- 0.38)%, where the first error quoted is statistical, the second systematic. C1 RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY. NIKHEF, NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. LAB ANNECY LE VIEUX PHYS PARTICULES, IN2P3, CNRS, F-74941 ANNECY LE VIEUX, FRANCE. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA. HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA. BOSTON UNIV, BOSTON, MA 02215 USA. NORTHEASTERN UNIV, BOSTON, MA 02215 USA. INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA. UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. MIT, CAMBRIDGE, MA 02139 USA. IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA. SEFT, HIGH ENERGY PHYS RES INST, SF-00014 HELSINKI, FINLAND. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. UNIV ALABAMA, TUSCALOOSA, AL 35486 USA. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. DESY, INST HOCHENERGIEPHYS, D-15738 ZEUTHEN, GERMANY. ETH ZURICH, CH-8093 ZURICH, SWITZERLAND. UNIV HAMBURG, D-22761 HAMBURG, GERMANY. HIGH ENERGY PHYS GRP, TAIPEI, TAIWAN. RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST PHYS NUCL LYON, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE. CIEMAT, E-28040 MADRID, SPAIN. INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. UNIV NAPLES, I-80125 NAPLES, ITALY. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. CALTECH, PASADENA, CA 91125 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. LENINGRAD NUCL PHYS INST, ST PETERSBURG, RUSSIA. UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA. UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN. BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA. KOREA ADV INST SCI & TECHNOL, CTR HIGH ENERGY PHYS, TAEJON 305701, SOUTH KOREA. RP IST NAZL FIS NUCL, VIA CELORIA 16, I-20133 MILAN, ITALY. RI Ferguson, Thomas/O-3444-2014; Berdugo, Javier/A-2858-2015; van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Sanchez, Eusebio/H-5228-2015; Duran, Ignacio/H-7254-2015; rodriguez calonge, francisco javier/H-9682-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Arce, Pedro/L-1268-2014; Roth, Stefan/J-2757-2016; Tsaregorodtsev, Andrei/E-3873-2016; Fiandrini, Emanuele/C-4549-2008; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Kirkby, Jasper/A-4973-2012; Servoli, Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; de la Cruz, Begona/K-7552-2014; Josa, Isabel/K-5184-2014; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014 OI Longo, Egidio/0000-0001-6238-6787; Ambrosi, Giovanni/0000-0001-6977-9559; Diemoz, Marcella/0000-0002-3810-8530; Bertucci, Bruna/0000-0001-7584-293X; Ferguson, Thomas/0000-0001-5822-3731; Berdugo, Javier/0000-0002-7911-8532; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283; Arce, Pedro/0000-0003-3009-0484; Roth, Stefan/0000-0003-3616-2223; Tsaregorodtsev, Andrei/0000-0003-4618-520X; Ludovici, Lucio/0000-0003-1970-9960; Kirkby, Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185; Cerrada, Marcos/0000-0003-0112-1691; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023 NR 21 TC 14 Z9 14 U1 2 U2 7 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 FEB 2 PY 1995 VL 345 IS 1 BP 93 EP 102 DI 10.1016/0370-2693(94)01587-3 PG 10 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QF495 UT WOS:A1995QF49500014 ER PT J AU SCHULTZ, AJ CARLIN, RL AF SCHULTZ, AJ CARLIN, RL TI SINGLE-CRYSTAL PULSED-NEUTRON DIFFRACTION STRUCTURE OF THE ANTIFERROMAGNET K-2[FECL5(H2O)] WITH AND WITHOUT APPLIED PRESSURE SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE LA English DT Article ID ANTI-FERROMAGNETIC K2; DEPENDENCE AB The crystal structure of K-2[FeCl5(H2O)] was examined at 15 K and ambient pressure (1 bar = 0.1 MPa) and at 15 K and 0.14 GPa (1.4 kbar) by single-crystal time-of-flight neutron diffraction in order to search for structural changes coincident with the discontinuity in the slope of the spin-flop transition field (H-SF) Versus pressure at 60 MPa. It is found that intramolecular and hydrogen-bond distances and angles are statistically equivalent at the two pressures. However, there are significant changes of as much as 0.049(3)Angstrom in the intramolecular Cl...Cl distances which may affect the Fe-Cl...Cl-Fe superexchange pathways and the discontinuity in H-SF. Dipotassium aquapentachloroferrate(III), M(r) = 329.3, F(000) = 636, orthorhombic, Pnma, Z = 4. At 15K and ambient pressure (0.1 MPa), a = 13.452(5), b = 9.631(2), c = 7.003(2)Angstrom, V = 907.3 (5)Angstrom(3), D-x = 2.41 g cm(-3). At 15 K and 0.14 GPa, a = 13.391(4), b = 9.648(2), c = 6.942(2)Angstrom, V = 896.9(4)Angstrom(3), D-x=2.44 g cm(-3). The a and c axes decrease slightly, whereas the b axis increases slightly, under applied pressure. C1 UNIV ILLINOIS,DEPT CHEM,CHICAGO,IL 60607. RP SCHULTZ, AJ (reprint author), ARGONNE NATL LAB,INTENSE PULSED NEUTRON SOURCE,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 13 TC 18 Z9 18 U1 2 U2 7 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-7681 J9 ACTA CRYSTALLOGR B JI Acta Crystallogr. Sect. B-Struct. Commun. PD FEB 1 PY 1995 VL 51 BP 43 EP 47 DI 10.1107/S0108768194008438 PN 1 PG 5 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA QF541 UT WOS:A1995QF54100007 ER PT J AU MARGEVICIUS, RW COTTON, JD AF MARGEVICIUS, RW COTTON, JD TI STUDY OF THE BRITTLE-TO-DUCTILE TRANSITION IN NIAL BY TEXTURE ANALYSIS SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID 1050 DEGREES K; SINGLE-CRYSTALS; SLIP SYSTEMS; PLASTIC-DEFORMATION; UNIFORM DEFORMATION; DISLOCATIONS; ALUMINIDES; KINKING; TENSILE; ALLOYS AB Polycrystalline NiAl displays a brittle-to-ductile transition temperature (BDTT) at the relatively low temperature of 0.3 T-m. Explanations of the low BDTT generally suffer from uncertainties in measuring bulk deformation mechanisms in post-deformation thin foils. Therefore, the present study emphasizes the bulk measurement of deformation mechanisms by interpretation of experimental and computer simulated textures. While NiAl develops a {110} fiber texture during elevated temperature extrusion, subsequent uniaxial deformation of NiAl below the recrystallization temperature results in no texture evolution. This can only occur if the active deformation mechanisms produce no crystal rotation, consistent with the reported [100]{011} slip system. Activation of any secondary slip system must cause lattice rotation, manifest by a change in texture. These results suggest that no additional slip systems are activated at the BDTT in polycrystalline NiAl and that diffusional processes are responsible for the increased plasticity. C1 LOS ALAMOS NATL LAB, DIV MAT SCI & TECHNOL, LOS ALAMOS, NM 87545 USA. NR 56 TC 12 Z9 12 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD FEB PY 1995 VL 43 IS 2 BP 645 EP 655 DI 10.1016/0956-7151(94)00273-K PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QG028 UT WOS:A1995QG02800024 ER PT J AU MALOY, SA MITCHELL, TE HEUER, AH AF MALOY, SA MITCHELL, TE HEUER, AH TI HIGH-TEMPERATURE PLASTIC ANISOTROPY IN MOSI2 SINGLE-CRYSTALS SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID MOLYBDENUM DISILICIDE; SLIP SYSTEMS; DEFORMATION AB The temperature dependence of the 0.2% yield stress in MoSi2 single crystals has been determined from 900 to 1600 degrees C for three specimen orientations, [001], [021] and [771]. Four different slip systems have been identified: {013}[100], {011}[100], {1(1) over bar0$}1/2[111] and {0(1) over bar3$}1/2[331]; the critical resolved shear stresses (CRSS) of these systems differ significantly from one another. MoSi2 is especially strong in the [001] orientation at temperatures above 1100 degrees C, because decomposition of 1/2(331) dislocations forces slip on a fifth system, either {12(3) over bar}1/2[111] or {0(1) over bar1$}1/2[111]. The CRSS of each slip system is discussed in terms of the influence of the dislocation core structure on the Peierls stress. C1 CASE WESTERN RESERVE UNIV, CLEVELAND, OH 44106 USA. RP MALOY, SA (reprint author), LOS ALAMOS NATL LAB, CMS, MS-K765, LOS ALAMOS, NM 87545 USA. RI Maloy, Stuart/A-8672-2009 OI Maloy, Stuart/0000-0001-8037-1319 NR 25 TC 84 Z9 85 U1 3 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD FEB PY 1995 VL 43 IS 2 BP 657 EP 668 DI 10.1016/0956-7151(94)00260-O PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QG028 UT WOS:A1995QG02800025 ER PT J AU PIOTROWSKA, A KAMINSKA, E PIOTROWSKI, T KASJANIUK, S GUZIEWICZ, M GIERLOTKA, S LIN, XW LILIENTALWEBER, Z WASHBURN, J KWIATKOWSKI, S AF PIOTROWSKA, A KAMINSKA, E PIOTROWSKI, T KASJANIUK, S GUZIEWICZ, M GIERLOTKA, S LIN, XW LILIENTALWEBER, Z WASHBURN, J KWIATKOWSKI, S TI INTERACTION OF AU WITH GASB AND ITS IMPACT ON THE FORMATION OF OHMIC CONTACTS SO ACTA PHYSICA POLONICA A LA English DT Article; Proceedings Paper CT XXIII International School on Physics of Semiconducting Compounds CY MAY 28-JUN 03, 1994 CL JASZOWIEC, POLAND AB Interfacial reactions between GaSb and Au were studied by Rutherford backscattering, X-ray diffraction, and cross-sectional transmission electron microscopy. Evaluation of the extent to which the GaSb substrate decomposes was of primary concern. The results give evidence that the reaction takes place even at temperatures as low as 180 degrees C. High reactivity of gold towards GaSb revealed by this study demonstrates that Au-based metallization is not a good candidate for device quality ohmic contacts to GaSb-based devices. C1 POLISH ACAD SCI, UNIPRESS, PL-01142 WARSAW, POLAND. UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA. A SOLTAN INST NUCL STUDIES, PL-00681 WARSAW, POLAND. RP PIOTROWSKA, A (reprint author), INST ELECTRON TECHNOL, AL LOTNIKOW 32-46, PL-02668 WARSAW, POLAND. RI Liliental-Weber, Zuzanna/H-8006-2012; Kaminska, Eliana/C-3086-2013 NR 3 TC 11 Z9 11 U1 4 U2 8 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, PL-02-668 WARSAW, POLAND SN 0587-4246 J9 ACTA PHYS POL A JI Acta Phys. Pol. A PD FEB PY 1995 VL 87 IS 2 BP 419 EP 422 PG 4 WC Physics, Multidisciplinary SC Physics GA QN411 UT WOS:A1995QN41100029 ER PT J AU ZEMA, N LAMA, F PIACENTINI, M FELICI, AC DEBOWSKA, D KISIEL, A OLSON, CG AF ZEMA, N LAMA, F PIACENTINI, M FELICI, AC DEBOWSKA, D KISIEL, A OLSON, CG TI SYNCHROTRON-RADIATION PHOTOEMISSION-STUDIES OF MN 3D STATES IN ZN1-XMNXSE SO ACTA PHYSICA POLONICA A LA English DT Article; Proceedings Paper CT XXIII International School on Physics of Semiconducting Compounds CY MAY 28-JUN 03, 1994 CL JASZOWIEC, POLAND ID TERNARY SEMIMAGNETIC SEMICONDUCTORS; ELECTRONIC-STRUCTURE; PARTIAL DENSITY; BAND-STRUCTURE; VALENCE-BAND; CD1-XMNXSE AB The angle integrated resonant photoemission measurements of Zn0.9Mn0.1Se have been performed in the photon energy range between 30 eV and 70 eV using synchrotron radiation. The ternary compound valence band photoemission spectra show, in comparison to the ZnSe results, additional structures, whose intensity depends on Mn content. These new features have been assigned to transitions from the Mn 3d states of e symmetry with spin up. The hybridization of the t(2) component of the 3d electrons of Mn in the valence band is discussed. C1 UNIV ROMA LA SAPIENZA,DIPARTIMENTO ENERGET,ROME,ITALY. JAGIELLONIAN UNIV,INST PHYS,PL-30059 KRAKOW,POLAND. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP ZEMA, N (reprint author), CNR,IST STRUTTURA MAT,I-00044 FRASCATI,ITALY. NR 14 TC 2 Z9 2 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4246 J9 ACTA PHYS POL A JI Acta Phys. Pol. A PD FEB PY 1995 VL 87 IS 2 BP 495 EP 499 PG 5 WC Physics, Multidisciplinary SC Physics GA QN411 UT WOS:A1995QN41100047 ER PT J AU MYERS, WD SWIATECKI, WJ AF MYERS, WD SWIATECKI, WJ TI THE NUCLEAR THOMAS-FERMI MODEL SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS ID MASS FORMULA; FISSION-BARRIERS; DEFORMED-NUCLEI; MATTER AB The statistical Thomas-Fermi model is applied to a comprehensive survey of macroscopic nuclear properties. The model uses a Seyler-Blanchard effective nucleon-nucleon interaction, generalized by the addition of one momentum-dependent and one density-dependent term. The adjustable parameters of the interaction were fitted to shell-corrected masses of 1654 nuclei, to the diffuseness of the nuclear surface and to the measured depths of the optical model potential. With these parameters nuclear sizes are well reproduced, and only relatively minor deviations between measured and calculated fission barriers of 36 nuclei are found. The model determines the principal bulk and surface properties of nuclear matter and provides estimates for the more subtle, Droplet Model, properties. The predicted energy vs. density relation for neutron matter is in striking correspondence with the 1981 theoretical estimate of Friedman and Phandaripande [1]. Other extreme situations to which the model is applied are a study of Sn isotopes from Sn-82 to Sn-170, and the rupture into a bubble configuration of a nucleus (constrained to spherical symmetry) which takes place when Z(2)/A exceeds about 100. RP MYERS, WD (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 32 TC 17 Z9 17 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 111 EP 131 PG 21 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600003 ER PT J AU STEPHENS, FS AF STEPHENS, FS TI NEW RESULTS FROM GAMMASPHERE SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS ID NUCLEI AB The new gamma-ray detector array, Gammasphere, is described and compared with other new arrays. The physics from this detector system is discussed briefly and two topics are considered in greater detail. The first topic is ''identical bands'' where it is shown that the similarities between these bands are not accidental, but also that it is a phenomenon which is not yet understood. The second topic discusses the study of nuclear structure in neutron-rich nuclei formed in deep-inelastic reactions. RP STEPHENS, FS (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 133 EP 151 PG 19 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600004 ER PT J AU NAZAREWICZ, W CWIOK, S DOBACZEWSKI, J SALADIN, JX AF NAZAREWICZ, W CWIOK, S DOBACZEWSKI, J SALADIN, JX TI MULTICLUSTERING AND PHYSICS OF EXOTIC NUCLEAR SHAPES SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS ID CONSISTENT EFFECTIVE INTERACTIONS; HARTREE-FOCK CALCULATIONS; HARMONIC-OSCILLATOR; HYPERDEFORMED NUCLEI; OCTUPOLE INSTABILITY; DEFORMED-NUCLEI; FISSION BARRIER; STATES; MODEL; O-16 AB The importance of the ground-state shell structure for the formation and stability of excited exotic nuclear configurations is discussed in terms of the multicluster model based on dynamical symmetries of a three-dimensional harmonic oscillator. As a spectacular example, it is shown that the density distribution at the third hyperdeformed minimum in the actinide nuclei resembles a di-nucleus consisting of a nearly-spherical fragment around the doubly-magic Sn-132, and a well-deformed fragment from the neutron-rich A similar to 100 region. C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996. WARSAW UNIV TECHNOL,INST PHYS,PL-00681 WARSAW,POLAND. UNIV PITTSBURGH,PITTSBURGH,PA 15260. RP NAZAREWICZ, W (reprint author), OAK RIDGE NATL LAB,JOINT INST HEAVY ION RES,POB 2008,OAK RIDGE,TN 37831, USA. NR 68 TC 5 Z9 5 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 189 EP 220 PG 32 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600007 ER PT J AU DELEPLANQUE, MA AF DELEPLANQUE, MA TI NEW FEATURES IN SUPERDEFORMED NUCLEI SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS ID ND-135; LIFETIMES; BAND AB New features in superdeformed nuclei observed with the new generation of large gamma-lay detector arrays are presented. The first part gives for the first time a microscopic scenario for the decay of a superdeformed band in the mass 130 region. The second part presents experimental evidence for a new type of symmetry, namely C-4 symmetry, in superdeformed nuclei. A phenomenological study of how the staggering occurs for a Y-44 deformation is discussed. RP DELEPLANQUE, MA (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 12 TC 1 Z9 1 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 221 EP 235 PG 15 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600008 ER PT J AU WALPE, JC GARG, U NAGULESWARAN, S REN, QW CARPENTER, MP JANSSENS, RVF AHMAD, I BEARDEN, IG HENRY, RG KHOO, TL LAURITSEN, T REVIOL, W RIEDINGER, LL WANG, XZ AF WALPE, JC GARG, U NAGULESWARAN, S REN, QW CARPENTER, MP JANSSENS, RVF AHMAD, I BEARDEN, IG HENRY, RG KHOO, TL LAURITSEN, T REVIOL, W RIEDINGER, LL WANG, XZ TI LIFETIMES IN IR-181 AND AU-187 - ENHANCED DEFORMATION OF THE PI-I(13/2) INTRUDER ORBITAL SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS AB Lifetimes have been measured in the pi h(9/2) (yrast) and pi i(13/2) (excited) bands in the nuclei Ir-181 and (187)AU using the Recoil Distance Method (RDM). The results clearly indicate that the pi i(13/2) band exhibits an increased deformation over the pi h(9/2) band, in keeping with the premise that the delayed crossing in this band is due to enhanced quadrupole deformation. C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. RP WALPE, JC (reprint author), UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556, USA. RI Naguleswaran, Sanjeev/A-4305-2013; Bearden, Ian/M-4504-2014; Carpenter, Michael/E-4287-2015 OI Bearden, Ian/0000-0003-2784-3094; Carpenter, Michael/0000-0002-3237-5734 NR 2 TC 5 Z9 5 U1 0 U2 1 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 279 EP 282 PG 4 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600014 ER PT J AU MAGIERSKI, P BURZYNSKI, K DOBACZEWSKI, J NAZAREWICZ, W AF MAGIERSKI, P BURZYNSKI, K DOBACZEWSKI, J NAZAREWICZ, W TI THE DELTA-I=4 BIFURCATION IN SUPERDEFORMED BANDS SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS AB The origin of the Delta I = 4 staggering effect which has recently been observed in several superdeformed bands is discussed. The Hamamoto and Mottelson model, which is based on a phenomenological parametrization of the hamiltonian as a quartic function of angular momentum, is analyzed. A stability of the description with respect to the C-4-symmetry breaking terms is studied. C1 UNIV WARSAW,INST THEORET PHYS,PL-00681 WARSAW,POLAND. OAK RIDGE NATL LAB,JOINT INST HEAVY ION RES,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. RP MAGIERSKI, P (reprint author), WARSAW UNIV TECHNOL,INST PHYS,KOSZYKOWA 75,PL-00662 WARSAW,POLAND. NR 7 TC 11 Z9 11 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 291 EP 296 PG 6 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600016 ER PT J AU FORNAL, B BRODA, R KROLAS, W PAWLAT, T DALY, PJ BEARDEN, IG GRABOWSKI, ZW MAYER, RH NISIUS, D RICHTER, L SFERRAZZA, M CARPENTER, M JANSSENS, RVF KHOO, TL LAURITSEN, T BAZZACCO, D LUNARDI, S ROSSIALVAREZ, C DEANGELIS, G BEDNARCZYK, P GRAWE, H MAIER, KH SCHUBART, R AF FORNAL, B BRODA, R KROLAS, W PAWLAT, T DALY, PJ BEARDEN, IG GRABOWSKI, ZW MAYER, RH NISIUS, D RICHTER, L SFERRAZZA, M CARPENTER, M JANSSENS, RVF KHOO, TL LAURITSEN, T BAZZACCO, D LUNARDI, S ROSSIALVAREZ, C DEANGELIS, G BEDNARCZYK, P GRAWE, H MAIER, KH SCHUBART, R TI DEEP-INELASTIC REACTIONS - A NEW TOOL FOR NUCLEAR SPECTROSCOPY SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS ID COLLISIONS; PB-208; ISOMERS AB Binary reaction products of Mo-92+Ni-60, Cd-106+Fe-54, Sn-124+Se-80,Ge-76, Pb-208+Ni-64 and Gd-160+S-36, Cl-37 heavy ion collisions 10-15% above the barrier have been studied in gamma-ray thick target experiments. The product yield distributions have been obtained for some of the reactions from gamma-gamma coincidence intensities as well as from target radioactivity measurements. The mass transfer between colliding nuclei is discussed in terms of mass and charge equilibration processes. These deep inelastic processes were found to populate a large number of neutron-rich nuclei strongly enough for yrast spectroscopy studies. New spectroscopic results are presented for the sdf shell nuclei Si-33, P-34, Cl-39, for (64),(65),(66),Ni-67 products and for heavy tin isotopes (119),(121),(122),(123),(124) Sn. Also yrast excitations in the Ni-68 have been identified showing a substantial subshell closure at neutron number N = 40. C1 PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY. IST NAZL FIS NUCL,I-35131 PADUA,ITALY. IST NAZL FIS NUCL,LAB NAZL LEGNARO,I-35020 LEGNARO,ITALY. HAHN MEITNER INST BERLIN GMBH,D-14109 BERLIN,GERMANY. RP FORNAL, B (reprint author), H NIEWODNICZANSKI INST NUCL PHYS,RADZIKOWSKIEGO 152,PL-31342 KRAKOW,POLAND. RI Krolas, Wojciech/N-9391-2013; Bearden, Ian/M-4504-2014; Carpenter, Michael/E-4287-2015 OI Bearden, Ian/0000-0003-2784-3094; Carpenter, Michael/0000-0002-3237-5734 NR 14 TC 28 Z9 28 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 357 EP 373 PG 17 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600021 ER PT J AU SMITH, AG PHILLIPS, WR DURELL, JL URBAN, W VARLEY, BJ PEARSON, CJ SHANNON, JA AHMAD, I LISTER, CJ MORSS, LR NASH, KL WILLIAMS, CW BENTALEB, M LUBKIEWICZ, E SCHULZ, N AF SMITH, AG PHILLIPS, WR DURELL, JL URBAN, W VARLEY, BJ PEARSON, CJ SHANNON, JA AHMAD, I LISTER, CJ MORSS, LR NASH, KL WILLIAMS, CW BENTALEB, M LUBKIEWICZ, E SCHULZ, N TI LIFETIMES IN NEUTRON-RICH MASS-100 NUCLEI MEASURED BY A DOPPLER PROFILE METHOD SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS ID FISSION AB The Eurogam-1 array has been used to study gamma rays emitted following the spontaneous fission of a Cm-248 source. The stopping of the fission fragments in the source material leads to Doppler-broadened gamma-ray lineshapes for those states that have lifetimes comparable to the stopping time. From the analysis of these lineshapes the transition quadrupole moments for the Yrast states in the neutron-rich nuclei Zr-100,Zr-102 and (104,106) Mo in the spin range 6-12 ($) over bar h have been deduced. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. CTR RECH NUCL,F-67037 STRASBOURG,FRANCE. JAGIELLONIAN UNIV,INST PHYS,PL-30059 KRAKOW,POLAND. RP SMITH, AG (reprint author), UNIV MANCHESTER,DEPT PHYS & ASTRON,MANCHESTER M13 9PL,LANCS,ENGLAND. NR 8 TC 0 Z9 0 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 387 EP 391 PG 5 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600024 ER PT J AU BETTS, RR AF BETTS, RR TI LOW-ENERGY NUCLEAR-PHYSICS WITH HIGH-SEGMENTATION SILICON ARRAYS SO ACTA PHYSICA POLONICA B LA English DT Article; Proceedings Paper CT XXIX Zakopane School of Physics on Trends in Nuclear Physics CY SEP 05-14, 1994 CL JAGELLONIAN UNIV, INST PHYSICS, ZAKOPANE, POLAND SP INST NUCL PHYS, KRAKOW, JAGELLONIAN UNIV, INST PHYS, KRAKOW, POLISH STATE COMM SCI RES HO JAGELLONIAN UNIV, INST PHYSICS ID HEAVY-ION COLLISIONS; COULOMB BARRIER; POSITRON LINES; TH COLLISIONS; SPECTROSCOPY; DETECTOR; EMISSION; SPECTRA; SYSTEMS; PEAKS AB A brief history is given of silicon detectors leading up to the development of ion-implanted strip detectors. Two examples of their use in low energy nuclear physics are discussed; the search for exotic alpha-chain states in Mg-24 and studies of anomalous positron-electron pairs produced in collisions of very heavy ions. C1 UNIV ILLINOIS,DEPT PHYS,CHICAGO,IL 60607. RP BETTS, RR (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 28 TC 0 Z9 0 U1 0 U2 0 PU POLISH ACAD SCIENCES INST PHYSICS PI WARSAW PA AL LOTNIKOW 32-46, 02-668 WARSAW, POLAND SN 0587-4254 J9 ACTA PHYS POL B JI Acta Phys. Pol. B PD FEB-MAR PY 1995 VL 26 IS 2-3 BP 487 EP 501 PG 15 WC Physics, Multidisciplinary SC Physics GA QX306 UT WOS:A1995QX30600034 ER PT J AU SIMMONS, JW COVINO, BS CRAMER, SD DUNNING, JS AF SIMMONS, JW COVINO, BS CRAMER, SD DUNNING, JS TI ANALYTICAL ELECTRON-MICROSCOPY WINS 1994 JACQUET-LUCAS-AWARD SO ADVANCED MATERIALS & PROCESSES LA English DT Article RP SIMMONS, JW (reprint author), US BUR MINES,ALBANY RES CTR,DIV SCI MAT,1450 QUEEN AVE SW,ALBANY,OR 97321, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 0026-0665 J9 ADV MATER PROCESS JI Adv. Mater. Process. PD FEB PY 1995 VL 147 IS 2 BP 28 EP 29 PG 2 WC Materials Science, Multidisciplinary SC Materials Science GA RB470 UT WOS:A1995RB47000004 ER PT J AU SLAUGHTER, GM HAYDEN, HW MANLY, WD AF SLAUGHTER, GM HAYDEN, HW MANLY, WD TI A HISTORY OF THE METALS AND CERAMICS DIVISION AT OAK-RIDGE-NATIONAL-LABORATORY .2. SO ADVANCED MATERIALS & PROCESSES LA English DT Article RP SLAUGHTER, GM (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 0026-0665 J9 ADV MATER PROCESS JI Adv. Mater. Process. PD FEB PY 1995 VL 147 IS 2 BP 67 EP 70 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA RB470 UT WOS:A1995RB47000012 ER PT J AU SIMUNOVIC, S SAIGAL, S AF SIMUNOVIC, S SAIGAL, S TI QUADRATIC-PROGRAMMING CONTACT FORMULATION FOR ELASTIC BODIES USING BOUNDARY-ELEMENT METHOD SO AIAA JOURNAL LA English DT Article ID FRICTION AB A method for the analysis of contact of deformable bodies based on the boundary element method (BEM) has been presented in this paper. The contact problem is stated in the form of a convex quadratic programming (QP) problem written in terms of the contact tractions on the contact surface. A strategy for the incorporation of the BEM contact analysis into models whose domain may be discretized using the finite element method (FEM) has been investigated. A discussion concerning the merits of the proposed approach is provided and several examples are presented to illustrate the validity of the method. C1 CARNEGIE MELLON UNIV,DEPT CIVIL ENGN,PITTSBURGH,PA 15213. RP SIMUNOVIC, S (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,PROC MODELING GRP,RES STAFF,OAK RIDGE,TN 37831, USA. NR 28 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD FEB PY 1995 VL 33 IS 2 BP 325 EP 331 DI 10.2514/3.12394 PG 7 WC Engineering, Aerospace SC Engineering GA QK492 UT WOS:A1995QK49200019 ER PT J AU HAYNES, BF MOODY, MA HEINLEY, CS KORBER, B MILLARD, WA SCEARCE, RM AF HAYNES, BF MOODY, MA HEINLEY, CS KORBER, B MILLARD, WA SCEARCE, RM TI HIV TYPE-1 V3 REGION PRIMER-INDUCED ANTIBODY SUPPRESSION IS OVERCOME BY ADMINISTRATION OF C4-V3 PEPTIDES AS A POLYVALENT IMMUNOGEN SO AIDS RESEARCH AND HUMAN RETROVIRUSES LA English DT Article ID HUMAN-IMMUNODEFICIENCY-VIRUS; SYNTHETIC PEPTIDES; NEUTRALIZING ANTIBODIES; IMMUNOLOGICAL RESPONSE; VIRAL HEMAGGLUTININ; PRIOR EXPERIENCE; ENVELOPE PROTEIN; T-CELLS; NEURAMINIDASE; INDUCTION AB The extreme variability of HIV-1 immunogenic regions has hampered attempts to design immunogens capable of inducing broadly reactive neutralizing anti-HIV antibody responses. We have begun to study the immune responses generated to a polyvalent mixture of HIV envelope gp120 synthetic peptides, and to determine the ability of each component of a polyvalent immunogen to prime and boost immune responses to each immunogen component. A major concern regarding the use of a polyvalent mixture of HIV-1 immunogens is that the phenomenon of ''original antigenic sin,'' or HIV-1 primer-induced suppression of antibody responses to a subsequent boost by a second HIV-1 variant, may occur and prevent effective anti-HIV immune responses. Using a prototypic four-valent HIV peptide envelope immunogen in BALB/c mice, we observed two types of primer-induced antibody suppression: ''original antigenic sin'' with primer-induced suppression of antibody responses to only the boosting immunogen, and a second, novel form of primer-induced antibody suppression, with inhibition of antibody responses not only to the priming immnnogen but also to all other immunogens in the polyvalent immunogen mixture as well. Importantly, either reversing the sequence of administration of the immunogens or administration of all four components as a polyvalent mixture completely overcame both forms of HIV-1 primer-induced antibody suppression. C1 DUKE UNIV,SCH MED,DEPT MED,DIV RHEUMATOL ALLERGY & IMMUNOL,DURHAM,NC 27710. DUKE UNIV,SCH MED,DEPT IMMUNOL,DURHAM,NC 27710. DUKE UNIV,SCH MED,CTR ARTHRITIS,DURHAM,NC 27710. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. OI Korber, Bette/0000-0002-2026-5757; Moody, Tony/0000-0002-3890-5855 FU NCI NIH HHS [2P01 CA43447]; NIAID NIH HHS [P30AI-28662, U01-AI35351] NR 33 TC 16 Z9 16 U1 0 U2 1 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 0889-2229 J9 AIDS RES HUM RETROV JI Aids Res. Hum. Retrovir. PD FEB PY 1995 VL 11 IS 2 BP 211 EP 221 DI 10.1089/aid.1995.11.211 PG 11 WC Immunology; Infectious Diseases; Virology SC Immunology; Infectious Diseases; Virology GA QJ888 UT WOS:A1995QJ88800004 PM 7742036 ER PT J AU HACKER, BC AF HACKER, BC TI CRITICAL ASSEMBLY - A TECHNICAL HISTORY OF LOS-ALAMOS DURING THE OPPENHEIMER YEARS, 1943-1945 - HODDESON,L, HENRIKSEN,PW, MEADE,RA, WESTFALL,C SO AMERICAN HISTORICAL REVIEW LA English DT Book Review RP HACKER, BC (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER HISTORICAL REVIEW PI WASHINGTON PA 400 A ST SE, WASHINGTON, DC 20003 SN 0002-8762 J9 AM HIST REV JI Am. Hist. Rev. PD FEB PY 1995 VL 100 IS 1 BP 256 EP 257 DI 10.2307/2168161 PG 2 WC History SC History GA QH807 UT WOS:A1995QH80700181 ER PT J AU NORTH, GB MOORE, TL NOBEL, PS AF NORTH, GB MOORE, TL NOBEL, PS TI CLADODE DEVELOPMENT FOR OPUNTIA-FICUS-INDICA (CACTACEAE) UNDER CURRENT AND DOUBLED CO2 CONCENTRATIONS SO AMERICAN JOURNAL OF BOTANY LA English DT Article ID CRASSULACEAN ACID METABOLISM; ELEVATED CO2; EPICUTICULAR WAX; POLYACANTHA CACTACEAE; GROWTH; RESPONSES; MORPHOLOGY; ENRICHMENT; ANATOMY; LEAVES AB Morphological and anatomical changes for first-order daughter cladodes (flattened stem segments) of a prickly pear cactus, Opuntia ficus-indica, were monitored to determine the effects of a doubled atmospheric CO2 concentration on their development and mature form. For daughter cladodes developing in controlled environment chambers for 60 d, maximal elongation rates were similar under a photosynthetic photon flux density (PPFD) of 6 mol m(-2) d(-1) and a CO2 concentration of 370 mu l liter(-1), an increased PPFD (10 mol m(-2) d(-1)), and an increased PPFD and a doubled CO2 concentration. These maximal rates, however, occurred at 20, 15, and 12 d, respectively. The maximal relative growth rate under the doubled CO2 concentration was about twice that under the other conditions. For cladodes at 60 d as well as after 4 and 16 mo in open-top chambers, doubling the CO2 concentration had no effect on final length or width. At 4 mo, cladodes under doubled CO2 were 27% thicker, perhaps allowing the earlier production of second-order daughter cladodes. The chlorenchyma was then 31% thicker and composed of longer cells. At 16 mo, the difference in cladode thickness diminished, but the chlorenchyma remained thicker under doubled CO2, which may contribute to greater net CO2 uptake for O. ficus-indica under elevated CO2 concentrations. Two other persistent differences were a 20% lower stomatal frequency and a 30% thicker cuticle with more epicuticular wax for cladodes under doubled CO2, both of which may help reduce transpirational water loss. C1 UNIV CALIF LOS ANGELES,DEPT BIOL,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,DOE LAB,LOS ANGELES,CA 90024. NR 43 TC 18 Z9 19 U1 0 U2 1 PU BOTANICAL SOC AMER INC PI COLUMBUS PA OHIO STATE UNIV-DEPT BOTANY 1735 NEIL AVE, COLUMBUS, OH 43210 SN 0002-9122 J9 AM J BOT JI Am. J. Bot. PD FEB PY 1995 VL 82 IS 2 BP 159 EP 166 DI 10.2307/2445524 PG 8 WC Plant Sciences SC Plant Sciences GA QH649 UT WOS:A1995QH64900003 ER PT J AU SUPERKO, HR AF SUPERKO, HR TI FAILURE OF CHOLESTEROL TREATMENT IN PATIENTS WITH CORONARY-ARTERY DISEASE - A COST-EFFECTIVE SOLUTION SO AMERICAN JOURNAL OF CARDIOLOGY LA English DT Editorial Material C1 SEQUOIA HOSP,INST LIPID,REDWOOD CITY,CA. RP SUPERKO, HR (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CHOLESTEROL RES CTR,REDWOOD CITY,CA, USA. NR 3 TC 3 Z9 3 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9149 J9 AM J CARDIOL JI Am. J. Cardiol. PD FEB 1 PY 1995 VL 75 IS 4 BP 277 EP 277 PG 1 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA QD397 UT WOS:A1995QD39700014 PM 7832138 ER PT J AU NUNES, A CASASAYAS, J TUFILLARO, N AF NUNES, A CASASAYAS, J TUFILLARO, N TI PERIODIC-ORBITS OF THE INTEGRABLE SWINGING ATWOOD MACHINE SO AMERICAN JOURNAL OF PHYSICS LA English DT Article C1 UNIV BARCELONA,DEPT MATEMAT APLICADA & ANAL,E-08071 BARCELONA,SPAIN. LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. RP NUNES, A (reprint author), UNIV LISBON,DEPT FIS,CAMPO GRANDE,C1,PISO 4,P-1700 LISBON,PORTUGAL. RI Nunes, Ana/N-4022-2013 OI Nunes, Ana/0000-0003-2760-3277 NR 8 TC 4 Z9 4 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0002-9505 J9 AM J PHYS JI Am. J. Phys. PD FEB PY 1995 VL 63 IS 2 BP 121 EP 126 DI 10.1119/1.17967 PG 6 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA QC791 UT WOS:A1995QC79100014 ER PT J AU BALAZS, GB GLASS, RS SUMMERS, LJ AF BALAZS, GB GLASS, RS SUMMERS, LJ TI ONE-POT ELECTROCHEMICAL DETERMINATION OF COPPER AND FORMALDEHYDE IN ELECTROLESS COPPER PLATING BATHS SO ANALYST LA English DT Article DE ELECTROLESS PLATING; COPPER; FORMALDEHYDE; ELECTROANALYSIS; AMPEROMETRY; STRIPPING VOLTAMMETRY ID COMPOSITE ELECTRODES; CYCLIC VOLTAMMETRY; ALKALINE-SOLUTIONS; AQUEOUS-SOLUTIONS; OXIDATION; GOLD; ELECTROCATALYSIS; REDUCTION; ALDEHYDES AB A simple electrochemical method has been developed for the determination of copper and formaldehyde concentrations in electroless copper plating baths. This method uses de amperometry and anodic stripping voltammetry for the determination of formaldehyde and copper concentrations, respectively. The analyses are done sequentially using a single gold electrode in the same sample solution. The advantages of this 'one-pot' technique are simplicity and speed of analysis, important advantages over alternative methods of analysis which are either more time consuming, involve multiple samples, or use more elaborate instrumentation. A commercial plating bath was analysed using the described technique, yielding results which had a precision of within 5% for formaldehyde and copper. While not rigorously precise, this method can be used in process control to indicate when bath replenishment or replacement is necessary. The method can easily be implemented in plating facilities by operators using portable equipment, and an automated, on-line procedure is also possible. RP BALAZS, GB (reprint author), LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,LIVERMORE,CA 94550, USA. NR 31 TC 2 Z9 2 U1 0 U2 4 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE SCIENCE PARK MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF SN 0003-2654 J9 ANALYST JI Analyst PD FEB PY 1995 VL 120 IS 2 BP 523 EP 527 DI 10.1039/an9952000523 PG 5 WC Chemistry, Analytical SC Chemistry GA QH463 UT WOS:A1995QH46300055 ER PT J AU THUNDAT, T CHEN, GY WARMACK, RJ ALLISON, DP WACHTER, EA AF THUNDAT, T CHEN, GY WARMACK, RJ ALLISON, DP WACHTER, EA TI VAPOR DETECTION USING RESONATING MICROCANTILEVERS SO ANALYTICAL CHEMISTRY LA English DT Article ID FORCE MICROSCOPE CANTILEVERS AB Changes in the resonance frequency of microcantilevers due to adsorption of analyte vapor on exposed surfaces is shown to provide a novel means for detection of the analyte. Frequency changes can be due to mass loading or adsorption-induced changes in cantilever spring constant. Sensitization to water vapor is demonstrated by coating cantilever surfaces with hygroscopic materials, such as phosphoric acid, Cantilevers coated with a thin gelatin film exhibit high sensitivity and a linear response with changes in relative humidity, apparently due to changes in the spring constant of the coated cantilever. In addition to frequency response, static cantilever detection also changes with vapor adsorption. Both phenomena can be used to detect adsorbed vapors with picogram mass resolution. RP THUNDAT, T (reprint author), OAK RIDGE NATL LAB,DIV HLTH SCI RES,OAK RIDGE,TN 37831, USA. NR 18 TC 171 Z9 174 U1 1 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD FEB 1 PY 1995 VL 67 IS 3 BP 519 EP 521 DI 10.1021/ac00099a006 PG 3 WC Chemistry, Analytical SC Chemistry GA QE766 UT WOS:A1995QE76600006 ER PT J AU CHENG, XH GALE, DC UDSETH, HR SMITH, RD AF CHENG, XH GALE, DC UDSETH, HR SMITH, RD TI CHARGE-STATE REDUCTION OF OLIGONUCLEOTIDE NEGATIVE-IONS FROM ELECTROSPRAY-IONIZATION SO ANALYTICAL CHEMISTRY LA English DT Article ID INDUCED CONFORMATIONAL-CHANGES; MASS-SPECTROMETRY; MOLECULE REACTIONS; GAS-PHASE; PROTEINS; POLYPEPTIDES; DISSOCIATION; MECHANISM; SPECTRA; PRINCIPLES AB We have investigated the feasibility of simplifying the electrospray ionization (ESI) mass spectra for mixture analyses through charge state reduction, Two methods for charge state reduction of gasphase oligonucleotide negative ions were evaluated: (1) the addition of acids to the oligonucleotide solution and (2) the formation of diamine adducts followed by dissociation in the interface region, In the first method, the efficiency of charge state reduction depends on the pK(a), the concentration, and the nature of the acids. Acetic and formic acids were found to be better reagents than HCl, CF3CO2H, and H3PO4. The second method has the advantage that the stability of oligonucleotides is not affected but requires the optimization of the interface dissociation:conditions and the amounts of diamine added to the oligonucleotide solution. Both methods show promise for charge state reduction, and results are presented for two oligonucleotides: d(pT)(12) and d(AGCT). Substantial reduction in spectral complexity upon charge state reduction was also observed for a four-component mixture of oligonucleotides. C1 PACIFIC NW LAB, DEPT CHEM SCI, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 56 TC 73 Z9 74 U1 2 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD FEB 1 PY 1995 VL 67 IS 3 BP 586 EP 593 DI 10.1021/ac00099a016 PG 8 WC Chemistry, Analytical SC Chemistry GA QE766 UT WOS:A1995QE76600016 ER PT J AU KIEFT, TL FREDRICKSON, JK MCKINLEY, JP BJORNSTAD, BN RAWSON, SA PHELPS, TJ BROCKMAN, FJ PFIFFNER, SM AF KIEFT, TL FREDRICKSON, JK MCKINLEY, JP BJORNSTAD, BN RAWSON, SA PHELPS, TJ BROCKMAN, FJ PFIFFNER, SM TI MICROBIOLOGICAL COMPARISONS WITHIN AND ACROSS CONTIGUOUS LACUSTRINE, PALEOSOL, AND FLUVIAL SUBSURFACE SEDIMENTS SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID COASTAL-PLAIN SEDIMENTS; PHYSIOLOGICAL DIVERSITY; HETEROTROPHIC BACTERIA; SOUTH-CAROLINA; SANDY AQUIFER; VADOSE ZONE; DEEP; ENVIRONMENTS; SITE; SOIL AB Twenty-six subsurface samples were collected from a borehole at depths of 173.3 to 196.8 m in the saturated zone at the Hanford Site in south central Washington State. The sampling was performed throughout strata that included fine-grained lacustrine (lake) sediments, a paleosol (buried soil) sequence, and coarse-grained fluvial (river) sediments. A subcoring method and tracers were used to minimize and quantify contamination to obtain samples that were representative of subsurface strata. Sediment samples were tested for total organic carbon, inorganic carbon, total microorganisms by direct microscopic counts, culturable aerobic heterotrophs by plate counts, culturable anaerobes by most-probable-number enumeration, basal respiration rates, and mineralization of C-14-labeled glucose and acetate. Total direct microscopic counts of microorganisms were low, ranging from below detection to 1.9 x 10(5) cells g (dry weight)(-1). Culturable aerobes and anaerobes were below minimum levels of detection in most samples. Direct microscopic counts, basal respiration rates, and C-14-glucose mineralization were all positively correlated with total organic carbon and were highest in the lacustrine sediments. In contrast to previous subsurface studies, these saturated-zone samples did not have higher microbial abundance and activities than unsaturated sediments sampled from the same borehole, the fine-textured lacustrine sediment had higher microbial numbers and activities than the coarse-textured fluvial sands, and the paleosol samples did not have higher biomass and activities relative to the other sediments. The results of this study expand the subsurface microbiology database to include information from an environment very different from those previously studied. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. OAK RIDGE NATL LAB, DIV ENVIRONM SCI, OAK RIDGE, TN 37831 USA. RP KIEFT, TL (reprint author), NEW MEXICO INST MIN & TECHNOL, DEPT BIOL, SOCORRO, NM 87801 USA. RI phelps, tommy/A-5244-2011 NR 36 TC 61 Z9 62 U1 1 U2 6 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD FEB PY 1995 VL 61 IS 2 BP 749 EP 757 PG 9 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA QF428 UT WOS:A1995QF42800052 PM 16534940 ER PT J AU OGRAM, A SUN, WH BROCKMAN, FJ FREDRICKSON, JK AF OGRAM, A SUN, WH BROCKMAN, FJ FREDRICKSON, JK TI ISOLATION AND CHARACTERIZATION OF RNA FROM LOW-BIOMASS DEEP-SUBSURFACE SEDIMENTS SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID MICROBIAL BIOMASS; DIRECT EXTRACTION; RIBOSOMAL-RNA; MESSENGER-RNA; EXPRESSION; PURIFICATION; DEGRADATION; DIVERSITY; BACTERIA; AQUIFER AB Three methods for the isolation of microbial RNA from lo rv-biomass deep-subsurface sediments have been developed and evaluated. RNA was isolated from samples taken from depths ranging from 173 to 217 m, and samples represented a variety of lithologies, including lacustrine, fluvial sand, and paleosol sediments. Cell numbers in these samples were estimated to be between log 4.0 and log 5.1/g on the basis of phospholipid fatty acid analysis. The most efficient method examined is based on the direct lysis of microbial cells followed by the extraction of RNA with alkaline phosphate buffers and subsequent inactivation of nucleases by extraction with guanidinium isothiocyanate. Estimated recoveries of mRNA for this method are approximately 26%. The recovered RNA included both mRNA and rRNA, as evidenced by the detection of sequences homologous to transcripts from the toluene-4-monooxygenase gene of Pseudomonas mendocina KR1 and bacterial, archaeal, and eukaryotic rRNA. An unexpectedly high relative concentration of archaeal rRNA (22 to 40%) was observed for these samples. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP OGRAM, A (reprint author), WASHINGTON STATE UNIV, DEPT CROP & SOIL SCI, PULLMAN, WA 99164 USA. NR 35 TC 84 Z9 86 U1 0 U2 6 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD FEB PY 1995 VL 61 IS 2 BP 763 EP 768 PG 6 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA QF428 UT WOS:A1995QF42800054 PM 7574612 ER PT J AU SCIME, EE ANDERSON, EH MCCOMAS, DJ SCHATTENBURG, ML AF SCIME, EE ANDERSON, EH MCCOMAS, DJ SCHATTENBURG, ML TI EXTREME-ULTRAVIOLET POLARIZATION AND FILTERING WITH GOLD TRANSMISSION GRATINGS SO APPLIED OPTICS LA English DT Article DE ULTRAVIOLET POLARIZATION; TRANSMISSION GRATINGS ID ATOMS; DIFFRACTION AB The polarization and transmission characteristics of freestanding gold transmission gratings, with 200-nm periods, for extreme-ultraviolet (EUV) radiation (l < 200 nm) have been measured. We find that EUV transmission through the gratings is dominated by the waveguide characteristics of the gratings and that polarization efficiencies of 90% for wavelengths of 121.6 nm are achievable. Both the EUV polarization and transmission properties are in good agreement with a complete vector, numerical solution of Maxwell's equations. The fraction of open area to total area of the grating has been measured using a 10-keV proton beam and was found to be in good agreement with the microscopic slit and wire dimensions that were obtained by scanning electron microscopy. The use of these gratings for particle measurements in the presence of intense EUV radiation is briefly discussed. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. MIT,CTR SPACE RES,CAMBRIDGE,MA 02139. RP SCIME, EE (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 27 TC 38 Z9 39 U1 0 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD FEB 1 PY 1995 VL 34 IS 4 BP 648 EP 654 PG 7 WC Optics SC Optics GA QE773 UT WOS:A1995QE77300009 PM 20963164 ER PT J AU SITTER, DN GODDARD, JS FERRELL, RK AF SITTER, DN GODDARD, JS FERRELL, RK TI METHOD FOR THE MEASUREMENT OF THE MODULATION TRANSFER-FUNCTION OF SAMPLED IMAGING-SYSTEMS FROM BAR-TARGET PATTERNS SO APPLIED OPTICS LA English DT Article AB A rigorous and simple method for the determination of the modulation transfer function (MTF) of a sampled imaging system is presented. One calculates the MTF by imaging bar patterns and calculating the reduction in amplitude of the fundamental frequency components. The optimal set of bar-pattern frequencies that reduce errors from aliased frequency components is derived. Theoretical and experimental data are presented. RP SITTER, DN (reprint author), OAK RIDGE NATL LAB,DIV INSTRUMENTAT & CONTROLS,POB 2008,OAK RIDGE,TN 37831, USA. NR 6 TC 55 Z9 57 U1 1 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD FEB 1 PY 1995 VL 34 IS 4 BP 746 EP 751 PG 6 WC Optics SC Optics GA QE773 UT WOS:A1995QE77300025 PM 20963180 ER PT J AU NIETO, MM HOLZSCHEITER, MH AF NIETO, MM HOLZSCHEITER, MH TI A CATCHING TRAP FOR ALL ANTIPROTON SEASONS SO APPLIED PHYSICS B-LASERS AND OPTICS LA English DT Article ID GRAVITATIONAL ACCELERATION; ANTIHYDROGEN FORMATION; PENNING TRAP; ATOMS; POSITRONIUM; ANTIMATTER AB We describe the origin, development, and status of the Los Alamos antiproton catching trap. Originally designed for the antiproton gravity experiment, it now is clear that this device can be a source of low-energy antiprotons for a wide range of physics, both on site, at CERN, and also off site. C1 LOS ALAMOS NATL LAB,DIV PHYS,LOS ALAMOS,NM 87545. RP NIETO, MM (reprint author), LOS ALAMOS NATL LAB,DIV THEORET PHYS,LOS ALAMOS,NM 87545, USA. NR 50 TC 19 Z9 19 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0946-2171 J9 APPL PHYS B-LASERS O JI Appl. Phys. B-Lasers Opt. PD FEB-MAR PY 1995 VL 60 IS 2-3 BP 103 EP 112 DI 10.1007/BF01135850 PG 10 WC Optics; Physics, Applied SC Optics; Physics GA QD236 UT WOS:A1995QD23600007 ER PT J AU WACHTER, EA STOREY, JME SHARP, SL CARRON, KT JIANG, Y AF WACHTER, EA STOREY, JME SHARP, SL CARRON, KT JIANG, Y TI HYBRID SUBSTRATES FOR REAL-TIME SERS-BASED CHEMICAL SENSORS SO APPLIED SPECTROSCOPY LA English DT Article DE RAMAN SPECTROMETRY; SERS SENSOR; HYBRID SUBSTRATES; SAM COATINGS ID ENHANCED RAMAN-SCATTERING; AROMATIC-COMPOUNDS; SURFACE; SPECTROMETRY; SPECTROSCOPY; SEPARATION AB Since the discovery of the surface-enhanced Raman scattering (SERS) effect, numerous substrate designs have been proposed for a variety of analytical applications. Although many of these have offered exceptional electromagnetic enhancement, the durability and reusability of substrates have not always been acceptable for routine analytical use. This paper discusses the design and testing of a neu class of hybrid SERS substrates specifically designed to optimize electromagnetic enhancement while also affording exceptional ruggedness and reversibility of response under challenging conditions. Substrate templates are fabricated lithographically into a quartz surface, then a thin metal film is deposited, and finally the entire surface is coated with a protective layer. Examples of inorganic and organic protective coatings are provided. Analytes are measured in flowing streams of airborne vapor and aqueous liquid. Properly designed surface coatings serve a dual role as both a protective layer and as a rapidly reversible selective adsorbent for specific analytes. C1 UNIV WYOMING,DEPT CHEM,LARAMIE,WY 82071. RP WACHTER, EA (reprint author), OAK RIDGE NATL LAB,DIV HLTH SCI RES,POB 2008,OAK RIDGE,TN 37831, USA. NR 17 TC 27 Z9 27 U1 1 U2 6 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD FEB PY 1995 VL 49 IS 2 BP 193 EP 199 DI 10.1366/0003702953963779 PG 7 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA QG757 UT WOS:A1995QG75700009 ER PT J AU ALONZO, G BERTAZZI, N FERRARO, JR FURLANI, A IUCCI, G POLZONETTI, G RUSSO, MV AF ALONZO, G BERTAZZI, N FERRARO, JR FURLANI, A IUCCI, G POLZONETTI, G RUSSO, MV TI MOSSBAUER, FAR-INFRARED, AND XPS INVESTIGATIONS OF SNCL2 AND SNCL4 INTRODUCED IN POLYCONJUGATED MONOSUBSTITUTED ACETYLENE MATRICES SO APPLIED SPECTROSCOPY LA English DT Article DE MOSSBAUER; FAR-INFRARED; XPS; SNCL2 AND SNCL4 DOPING OF POLYCONJUGATED MONOSUBSTITUTED ACETYLENES ID HUMIDITY SENSORS; TIN(II) CHLORIDE; ELECTRODES; COMPLEXES; POLYMER; ADDUCTS; SYSTEM; FILMS AB Mossbauer, far-infrared, and X-ray photoemission spectroscopy (XPS) studies have been made on doped (SnCl2 or SnCl2) polyethynylfluorenol (PEFI) and polyphenylacetylene (PPA), The nature of the tin as it is incorporated into the polymer is examined, The resistance values of the doped polymers are followed with relative humidity, Results point to tetrahedral (SnCl4) and octahedral (SnCl4.2H(2)O) species in the SnCl4 doping, With SnCl4 doping, the nature of the species is less certain, although both Sn(II) and hexacoordinated Sn(IV) appear to be present. C1 UNIV ROMA LA SAPIENZA,DEPT CHEM,I-00185 ROME,ITALY. UNIV PALERMO,DEPT INORGAN CHEM,I-90123 PALERMO,ITALY. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. UNIV ROME 3,I-00100 ROME,ITALY. RI Alonzo, Giuseppe/A-6079-2010 NR 26 TC 7 Z9 7 U1 2 U2 12 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD FEB PY 1995 VL 49 IS 2 BP 237 EP 240 DI 10.1366/0003702953963742 PG 4 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA QG757 UT WOS:A1995QG75700017 ER PT J AU MCCLOSKEY, JT NEWMAN, MC AF MCCLOSKEY, JT NEWMAN, MC TI SEDIMENT PREFERENCE IN THE ASIATIC CLAM (CORBICULA-FLUMINEA) AND VIVIPARID SNAIL (CAMPELOMA-DECISUM) AS A RESPONSE TO LOW-LEVEL METAL AND METALLOID CONTAMINATION SO ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY LA English DT Article ID TRACE-METALS AB Sediment preference experiments were performed with the asiatic clam (Corbicula fluminea) and viviparid snail (Campeloma decisum) to determine the potential use of clam and snail behavior as a response to low-level metal and metalloid contamination. Three sediment types with varying levels of metal contamination were paired in various combinations. Clams and snails were placed in aquaria dong the interface between the sediment types. Daily location and burial status were noted for two weeks. Clams spent significantly more days in the uncontaminated sediment when paired with one of the contaminated sediments. Snails spent more days in contaminated sediments when paired with the uncontaminated sediment, but none of these differences was statistically significant. Clams moved fewer days in tanks with the two most contaminated sediment types. Burrowing of snails was relatively unaffected by sediment treatments. The behavior of clams was more sensitive than the behavior of snails to sediment metal contamination. Consequently, dam behavior appears to be a better behavioral indicator of metal contamination. C1 UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. NR 17 TC 12 Z9 12 U1 0 U2 8 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0090-4341 J9 ARCH ENVIRON CON TOX JI Arch. Environ. Contam. Toxicol. PD FEB PY 1995 VL 28 IS 2 BP 195 EP 202 PG 8 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA QD232 UT WOS:A1995QD23200009 ER PT J AU MCCLOSKEY, JT NEWMAN, MC DIXON, PM AF MCCLOSKEY, JT NEWMAN, MC DIXON, PM TI EFFECT OF METAL AND METALLOID CONTAMINATED SEDIMENT ON THE SPATIAL-DISTRIBUTION OF ASIATIC CLAMS (CORBICULA-FLUMINEA) SO ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY LA English DT Article AB The purpose of this study was to determine the effect of metal and metalloid contaminated sediment on the movement and spatial distribution of asiatic clam (Corbicula Fluminea) populations in the laboratory. One hundred clams were randomly placed in one meter diameter pools containing sediment collected from three sites of varying levels of metal contamination. The location of each clam was determined on days 0, 7, 14, 21 and 28. Ripley's L(t) function was used to measure the randomness or clustering of clams in experimental pools. There was no significant evidence of clustering of clam locations throughout the experiment. Further, sediment type had no significant effect on the distribution of clams in the pools, which suggests that clams were moving independently of one another. This information allowed us to estimate whether individual clams move sufficient distances to escape from patches of contaminated sediment of different sizes. Simulation results showed that after 150 weeks, clams can effectively escape from smaller contaminated patches of sediment (25-, 50-, and 100-cm radius), while less than 50% of clams could escape from a contaminated patch of 200-cm radius. These simulations suggest that an avoidance of contaminated sediment will not result in effective escape from moderately sized patches of contaminated sediment (>100-cm radius). C1 UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. NR 20 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0090-4341 J9 ARCH ENVIRON CON TOX JI Arch. Environ. Contam. Toxicol. PD FEB PY 1995 VL 28 IS 2 BP 203 EP 208 PG 6 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA QD232 UT WOS:A1995QD23200010 ER PT J AU DODELSON, S JUBAS, JM AF DODELSON, S JUBAS, JM TI REIONIZATION AND ITS IMPRINT ON THE COSMIC MICROWAVE BACKGROUND SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC MICROWAVE BACKGROUND; COSMOLOGY, THEORY; EARLY UNIVERSE ID DARK-MATTER; RADIATION ANISOTROPIES; SCALE; UNIVERSE; FLUCTUATIONS; CONSTRAINTS AB Early reionization changes the pattern of anisotropies expected in the cosmic microwave background. To explore these changes, we derive from first principles the equations governing anisotropies, focusing on the interactions of photons with electrons. Vishniac (1987) claimed that second-order terms can be large in a reionized universe, so we derive equations correct to second order in the perturbations. There are many more second-order terms than were considered by Vishniac. To understand the basic physics involved, we present a simple analytic approximation to the first-order equation. Then, turning to the second order equation, we show that the Vishniac term is indeed the only important one. We also present numerical results for a variety of ionization histories (in a standard cold dark matter universe) and show quantitatively how the signal in several experiments depends on the ionization history. The most pronounced indication of a reionized universe would be seen in very small scale experiments; the expected signal in the Owens Valley experiment is smaller by a factor of order 10 if the last scattering surface is at a redshift z similar or equal to 100 as it would be if the universe were reionized very early. On slightly larger scales, the expected signal in a reionized universe is smaller than it would be with standard recombination, but only by a factor of 2 or so. The signal is even smaller in these experiments in the intermediate case where some photons last scattered at the standard recombination epoch. C1 MIT, DEPT PHYS, CAMBRIDGE, MA 02139 USA. RP DODELSON, S (reprint author), FERMILAB NATL ACCELERATOR LAB, NASA, FERMILAB ASTROPHYS CTR, POB 500, BATAVIA, IL 60510 USA. NR 32 TC 83 Z9 83 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 1 PY 1995 VL 439 IS 2 BP 503 EP 516 DI 10.1086/175191 PN 1 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD405 UT WOS:A1995QD40500001 ER PT J AU LOWENTHAL, JD HECKMAN, TM LEHNERT, MD ELIAS, JH AF LOWENTHAL, JD HECKMAN, TM LEHNERT, MD ELIAS, JH TI IMAGING THE HOST GALAXIES OF HIGH-REDSHIFT RADIO-QUIET QSOS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, SPIRAL; INFRARED, GALAXIES; QUASARS, GENERAL ID QUASI-STELLAR OBJECTS; ACTIVE GALACTIC NUCLEI; LOUD QUASARS; FAINT; ENVIRONMENTS; B2-0902+34; EVOLUTION; CATALOG AB We present new deep K-band and optical images of four radio-quiet QSOs at z approximate to 1 and six radio-quiet QSOs at z approximate to 2.5, as well as optical images only of six more at z approximate to 2.5. We have examined the images carefully for evidence of extended ''fuzz'' from any putative QSO host galaxy. None of the z approximate to 2.5 QSOs shows any extended emission, and only two of the z approximate to 1 QSOs show marginal evidence for extended emission. Our 3 sigma detection limits in the K images, m(K) approximate to 21 for an isolated source, would correspond approximately to an unevolved L* elliptical galaxy at z = 2.5 or to 2-3 mag fainter than an L* elliptical at z = 1, although our limits on host galaxy light are weaker than this due to the difficulty of separating galaxy light from QSO light. We simulate simple models of disk and elliptical host galaxies, and find that the marginal emission around the two z approximate to 1 QSOs can be explained by disks or bulges that are similar to 1-2 mag brighter than an unevolved L* galaxy in one case and similar to 1.5-2.5 mag brighter than L* in the other. For two other z approximate to 1 QSOs, we have only upper limits (L approximate to L*). The hosts of the high-redshift sample must be no brighter than about 3 mag above an unevolved L* galaxy, and are at least 1 magnitude fainter than the hosts of radio-loud QSOs at the same redshift. If the easily detected K-band light surrounding a previous sample of otherwise similar but radio-loud QSOs is starlight, then it must evolve on timescales of greater than or similar to 10(8) yr (e.g., Chambers and Chariot 1990); therefore our nondetection of host galaxy fuzz around radio-quiet QSOs supports the view that high-redshift radio-quiet and radio-loud QSOs inhabit different host objects, rather than being single types of objects that turn their radio emission on and off over short timescales. This is consistent with the general trend at low redshifts that radio-loud QSOs are found in giant elliptical galaxies while radio-quiet QSOs are found in less luminous disk galaxies. It also suggests that the processes responsible for the spectacular properties of radio-loud AGNs at high redshifts might not be generally relevant to the (far more numerous) radio-quiet population. C1 JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218. SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. LAWRENCE LIVERMORE NATL LAB,INST GEOPHYS & PLANETARY PHYS,LIVERMORE,CA 94550. NATL OPT ASTRON OBSERV,CERRO TOLOLO INTER AMER OBSERV,TUCSON,AZ 85726. KITT PEAK NATL OBSERV,TUCSON,AZ 85726. NR 34 TC 27 Z9 27 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 1 PY 1995 VL 439 IS 2 BP 588 EP 598 DI 10.1086/175199 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD405 UT WOS:A1995QD40500009 ER PT J AU FIELDS, BD OLIVE, KA SCHRAMM, DN AF FIELDS, BD OLIVE, KA SCHRAMM, DN TI IMPLICATIONS OF A HIGH POPULATION-II B/BE RATIO SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC RAYS; NUCLEAR REACTIONS, NUCLEOSYNTHESIS, ABUNDANCES; STARS, POPULATION II ID EARLY GALAXY; PRIMORDIAL LITHIUM; NUCLEOSYNTHESIS; BERYLLIUM; ABUNDANCES; EVOLUTION; STARS; LI; ELEMENTS; ORIGIN AB The observed boron/beryllium ratio in extreme Population II stars has been interpreted as evidence of Be and B synthesis by early Galactic cosmic rays. However, a recent reanalysis of the boron abundance in the Population II halo star HD 140283 suggests that B/H may be larger than previously reported, by as much as a factor of 4. This would yield a B/Be ratio lying in the range 14 less than or similar to B/Be less than or similar to 50. The possibility of a high Population II B/Be ratio stresses the importance of the upper limit to the B/Be ratio arising from cosmic-ray production. It is found that the limit to cosmic-ray-produced B/Be depends upon the assumed cosmic-ray spectrum. For any Population II comic-ray spectrum that is a single power law in either total energy per nucleon or in momentum, the B/Be ratio is constrained to lie in the range 7.6 less than or similar to B/Be less than or similar to 14. Thus, if the new B/Be ratio is correct, it requires either a bimodal cosmic-ray flux with a large low-energy component, or, for another B source, possibly the proposed v-process in supernovae, either of which may be helpful in explaining the observed B-11/B-10 ratio. Finally, it is noted that the boron reanalysis highlights the uncertainty in our knowledge of the B/Be ratio, and the need for additional data on Be and B abundances. C1 UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455. FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510. RP FIELDS, BD (reprint author), UNIV CHICAGO,CHICAGO,IL 60637, USA. NR 37 TC 12 Z9 12 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 1 PY 1995 VL 439 IS 2 BP 854 EP 859 DI 10.1086/175224 PN 1 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD405 UT WOS:A1995QD40500034 ER PT J AU KOGUT, A BANDAY, AJ BENNETT, CL HINSHAW, G LUBIN, PM SMOOT, GF AF KOGUT, A BANDAY, AJ BENNETT, CL HINSHAW, G LUBIN, PM SMOOT, GF TI GAUSSIAN STATISTICS OF THE COSMIC MICROWAVE BACKGROUND - CORRELATION OF TEMPERATURE EXTREMA IN THE COBE DMR 2-YEAR SKY MAPS SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC MICROWAVE BACKGROUND; METHODS, STATISTICAL ID FLUCTUATIONS; RADIOMETER; RADIATION AB We use the two-point correlation function of the extrema points (peaks and valleys) in the COBE Differential Microwave Radiometers (DMR) 2 year sky maps as a test for non-Gaussian temperature distribution in the cosmic microwave background anisotropy. A maximum-likelihood analysis compares the DMR data to n = 1 toy models whose random-phase spherical harmonic components a(lm) are drawn from either Gaussian, chi(2), or log-normal parent populations. The likelihood of the 53 GHz (A+B)/2 data is greatest for the exact Gaussian model. There is less than 10% chance that the non-Gaussian models tested describe the DMR data, limited primarily by type II errors in the statistical inference. The extrema correlation function is a stronger test for this class of non-Gaussian models than topological statistics such as the genus. C1 NASA,GODDARD SPACE FLIGHT CTR,UNIV SPACE RES ASSOC,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,SSL,BERKELEY,CA 94720. UNIV CALIF BERKELEY,CIPA,BERKELEY,CA 94720. RP KOGUT, A (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HUGHES STX CORP,ASTRON & SOLAR PHYS LAB,CODE 685,GREENBELT,MD 20771, USA. RI Kogut, Alan/D-6293-2012 NR 13 TC 23 Z9 23 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 1 PY 1995 VL 439 IS 2 BP L29 EP L32 DI 10.1086/187737 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD407 UT WOS:A1995QD40700001 ER PT J AU COLOMBI, S BOUCHET, FR SCHAEFFER, R AF COLOMBI, S BOUCHET, FR SCHAEFFER, R TI A COUNT PROBABILITY COOKBOOK - SPURIOUS EFFECTS AND THE SCALING MODEL SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE GALAXIES, CLUSTERS, GENERAL; METHODS, NUMERICAL; METHODS, STATISTICAL ID INVARIANT MATTER DISTRIBUTION; POINT CORRELATION-FUNCTIONS; GALAXY CORRELATION-FUNCTION; CFA REDSHIFT SURVEY; STATISTICAL-ANALYSIS; EXTRAGALACTIC OBJECTS; EXPANDING UNIVERSE; VOID STATISTICS; CATALOG; FLUCTUATIONS AB We study the errors brought by finite volume effects and dilution effects on the practical determination of the count probability distribution function P-N(n,l), which is the probability of having N objects in a cell of volume l(3) for a set of average number density n. Dilution effects are particularly relevant to the so-called sparse sampling strategy. This work is mainly done in the framework of the Balian and Schaeffer scaling model, which assumes that the e-body correlation functions obey the scaling relation xi(Q)(lambda r(1),...,lambda r(Q)) = lambda (-(Q-1)gamma)xi(Q)(r(1),...,r(Q)). We use three synthetic samples as references to perform our analysis: a fractal generated by a Rayleigh-Levy random walk with similar to 3 X 10(4) objects, a sample dominated by a spherical power-law cluster with similar to 3 X 10(4) objects and a cold dark matter (CDM) universe involving similar to 3 X 10(5) matter particles. The void probability, P-0, is seen to be quite weakly sensitive to finite sample effects, if P(0)Vl(-3)greater than or similar to 1, where Vis the volume of the sample (but P-0 is not immune to spurious grid effects in the case of numerical simulations from such quiet initial conditions). If this condition is met, the scaling model can be tested with a high degree of accuracy. Still, the most interesting regime, when the scaling predictions are quite unambiguous, is reached only when nl(0)(3) greater than or similar to 30-50, where l(0) is the (pseudo-)correlation length at which the averaged two-body correlation function over a cell is unity. For the galaxy distribution, this corresponds to n greater than or similar to 0.02-0.03 h(3)Mpc(-3). The count probability distribution for N not equal 0 is quite sensitive to discreteness effects. Furthermore, the measured large N tail appears increasingly irregular with N, until a sharp cutoff is reached. These wiggles and the cutoff are finite volume effects. It is still possible to use the measurements to test the scaling model properties with a good accuracy, but the sample has to be as dense and large as possible. Indeed the condition nl(0)(3) greater than or similar to 80-120 is required, or equivalently n greater than or similar to 0.04-0.06 h(3) Mpc(-3). The number densities of the current three-dimensional galaxy catalogs are thus not large enough to test fairly the predictions of the scaling model. Of course, these results strongly argue against sparse sampling strategies. C1 INST ASTROPHYS,F-75014 PARIS,FRANCE. CENS,CEA,INST RECH FONDAMENTALE LAB,SERV PHYS THEOR,F-91191 GIF SUR YVETTE,FRANCE. RP COLOMBI, S (reprint author), FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,POB 500,BATAVIA,IL 60510, USA. RI Bouchet, Francois/B-5202-2014 NR 63 TC 44 Z9 44 U1 1 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD FEB PY 1995 VL 96 IS 2 BP 401 EP 428 DI 10.1086/192125 PG 28 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD876 UT WOS:A1995QD87600004 ER PT J AU JUSTTANONT, K TIELENS, AGGM SKINNER, CJ HAAS, MR AF JUSTTANONT, K TIELENS, AGGM SKINNER, CJ HAAS, MR TI OBSERVATIONS OF HIGH CO ROTATIONAL LINES IN POST-AGBS AND PN SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE MOLECULAR PROCESSES; SHOCK WAVES; STARS, AGE AND POST-AGE AB We present a preliminary interpretation of high CO rotational line data obtained from KAO. The possibility of either a PDR or a shock model is considered in order to explain the observations. C1 LAWRENCE LIVERMORE NATL LAB,IGPP,LIVERMORE,CA 94551. RP JUSTTANONT, K (reprint author), NASA,AMES RES CTR,MS 245-3,MOFFETT FIELD,CA 94035, USA. OI /0000-0003-1689-9201 NR 8 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 305 EP 308 DI 10.1007/BF00667862 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700052 ER PT J AU WINTERS, JM FLEISCHER, AJ SEDLMAYR, E GAUGER, A AF WINTERS, JM FLEISCHER, AJ SEDLMAYR, E GAUGER, A TI INFRARED APPEARANCE OF DYNAMICAL MODELS FOR CIRCUMSTELLAR DUST SHELLS AROUND LONG-PERIOD VARIABLES SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE HYDRODYNAMICS; RADIATIVE TRANSFER; CIRCUMSTELLAR SHELLS; CARBON STARS; LONG-PERIOD VARIABLES; DUST; STARS, IRC +10216 AB Synthetic brightness profiles resulting from consistent dynamical models for circumstellar dust shells around long-period variables are presented and discussed with respect to a corresponding observation of IRC + 10216. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP WINTERS, JM (reprint author), TECH UNIV BERLIN,INST ASTRON & ASTROPHYS,SEKR PN 8-1,HARDENBERGSTR 36,D-10623 BERLIN,GERMANY. NR 3 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 329 EP 332 DI 10.1007/BF00667866 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700056 ER PT J AU SKINNER, CJ MEIXNER, M BARLOW, MJ JUSTTANONT, K ARENS, JF JERNIGAN, JG AF SKINNER, CJ MEIXNER, M BARLOW, MJ JUSTTANONT, K ARENS, JF JERNIGAN, JG TI THE ONSET OF AXIAL SYMMETRY IN PROTOPLANETARY NEBULAE SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE PPN; MASS-LOSS; BIPOLAR NEBULAE AB We have obtained resolved IR images, at wavelengths from 1.2 mu m to 12.5 mu m, of a small sample of protoplanetary nebulae. The results suggest that all PPNe are axially, not spherically, symmetric, that spherical symmetry ends at the tip of the AGB, and that AGB evolution terminates with a burst of remarkably rapid, equatorially concentrated mass-loss. C1 UNIV ILLINOIS, DEPT ASTRON, CHICAGO, IL 60680 USA. UCL, DEPT PHYS & ASTRON, LONDON, ENGLAND. UNIV CALIF BERKELEY, SPACE SCI LAB, BERKELEY, CA 94720 USA. RP SKINNER, CJ (reprint author), LAWRENCE LIVERMORE NATL LAB, INST GEOPHYS & PLANETARY PHYS, L-413, LIVERMORE, CA 94550 USA. RI Barlow, Michael/A-5638-2009; OI Barlow, Michael/0000-0002-3875-1171; /0000-0003-1689-9201 NR 8 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 383 EP 386 DI 10.1007/BF00667876 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700065 ER PT J AU SYLVESTER, RJ BARLOW, MJ SKINNER, CJ AF SYLVESTER, RJ BARLOW, MJ SKINNER, CJ TI OBSERVATIONS OF DUST EMISSION FROM VEGA-EXCESS STARS SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE STARS, MAIN-SEQUENCE; SPECTRA, INFRARED; DUST; UIR BANDS AB Observations have been made of a large sample of Vega-excess stars. Midinfrared spectra show silicate dust features and also the UIR bands, implying the presence of hydrocarbon material. Millimetre-wave photometry indicates the presence of large amounts of cool material, while near-IR photometry reveals an excess in several stars, which we ascribe to transiently-heated very small grains. C1 LAWRENCE LIVERMORE NATL LAB,INST GEOPHYS & PLANETARY PHYS,LIVERMORE,CA 94551. RP SYLVESTER, RJ (reprint author), UNIV LONDON UNIV COLL,DEPT PHYS & ASTRON,GOWER ST,LONDON WC1E 6BT,ENGLAND. RI Barlow, Michael/A-5638-2009 OI Barlow, Michael/0000-0002-3875-1171 NR 4 TC 3 Z9 3 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 405 EP 408 DI 10.1007/BF00667881 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700069 ER PT J AU SNYDER, F AF SNYDER, F TI PLATELET-ACTIVATING-FACTOR - THE BIOSYNTHETIC AND CATABOLIC ENZYMES SO BIOCHEMICAL JOURNAL LA English DT Review ID GUINEA-PIG LIVER; DIHYDROXYACETONE PHOSPHATE ACYLTRANSFERASE; ARACHIDONOYL-HYDROLYZING PHOSPHOLIPASE-A2; HUMAN POLYMORPHONUCLEAR LEUKOCYTES; COA-INDEPENDENT TRANSACYLASE; EHRLICH ASCITES TUMOR; RAT SPLEEN MICROSOMES; MACROPHAGE CELL-LINE; LYSO-PAF-ACETYLTRANSFERASE; HUMAN DECIDUAL MACROPHAGES RP OAK RIDGE ASSOCIATED UNIV, DIV MED SCI, POB 117, OAK RIDGE, TN 37831 USA. FU NHLBI NIH HHS [HL27109-13A1] NR 216 TC 133 Z9 145 U1 0 U2 3 PU PORTLAND PRESS LTD PI LONDON PA CHARLES DARWIN HOUSE, 12 ROGER STREET, LONDON WC1N 2JU, ENGLAND SN 0264-6021 EI 1470-8728 J9 BIOCHEM J JI Biochem. J. PD FEB 1 PY 1995 VL 305 BP 689 EP 705 PN 3 PG 17 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QF437 UT WOS:A1995QF43700001 PM 7848265 ER PT J AU GREALY, M SREENAN, JM AF GREALY, M SREENAN, JM TI CYCLIC-NUCLEOTIDE AND PROTEIN-LEVELS IN PREIMPLANTATION BOVINE EMBRYOS SO BIOCHEMICAL SOCIETY TRANSACTIONS LA English DT Article; Proceedings Paper CT 652nd Meeting of the Biochemical-Society CY SEP 06-09, 1994 CL CANTERBURY, ENGLAND SP BIOCHEM SOC ID ADENYLATE-CYCLASE; MATURATION; CAMP; AMP RP GREALY, M (reprint author), AGR & FOOD DEV AUTHOR,TEAGASC,DEPT ANIM REPROD,TUAM,GALWAY,IRELAND. NR 7 TC 1 Z9 1 U1 0 U2 1 PU PORTLAND PRESS PI LONDON PA 59 PORTLAND PLACE, LONDON, ENGLAND W1N 3AJ SN 0300-5127 J9 BIOCHEM SOC T JI Biochem. Soc. Trans. PD FEB PY 1995 VL 23 IS 1 BP S13 EP S13 PG 1 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QJ288 UT WOS:A1995QJ28800048 PM 7758693 ER PT J AU PATTON, HJ TAYLOR, SR AF PATTON, HJ TAYLOR, SR TI ANALYSIS OF LG SPECTRAL RATIOS FROM NTS EXPLOSIONS - IMPLICATIONS FOR THE SOURCE MECHANISMS OF SPALL AND THE GENERATION OF LG WAVES SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID UNDERGROUND NUCLEAR-EXPLOSIONS; NEVADA TEST SITE; UNITED-STATES EARTHQUAKES; SURFACE-WAVES; DISCRIMINATION; YIELD AB Spectral ratios between normal-depth and over-buried nuclear explosions are investigated for purposes of detecting the effects of spall on the amplitude spectra of regional seismic signals. Lg and Pg spectral ratios in the frequency band 0.2 to 2.0 Hz are found to correlate with the strength of spall for explosions on Yucca Flats. The Lg ratios are characterized by spectral scalloping and a pronounced null at 0.55 Hz. The spectral null does not shift in frequency for explosions with significantly different spall dwell times. This observation, and the fact that a corresponding null is absent in the spectral ratios of Pg waves, are strong evidence against an interference effect in the spall time function as the cause of the spectral null. We examine the effects of Green's function excitation and spall source mechanism for models in which a normal-depth explosion is assumed to be a linear superposition of a spherical source (monopole) and spall. A tensile crack model for spall cannot reproduce the salient features of the spectral ratios. The only linear, equivalent elastic model in general agreement with the observations is one where spall is represented by a compensated linear vector dipole (CLVD), and Lg is generated by near-source scattering of Rg waves into body waves, which become trapped in the crust. In this model, the Rg spectrum is imprinted onto the scattered P and S waves. A spectral null at 0.55 Hz is caused by an excitation null for Rg waves for a CLVD source buried in the upper 500 m of the crust. While monopole and spall sources can excite Lg waves directly, the results of this study suggest that scattering of large-amplitude Rg waves in the near field is the most important source of Lg waves with frequencies near 1 Hz for explosions on Yucca Flats. This model is discussed in light of several outstanding observations documented for regional discriminants using Lg waves. C1 LOS ALAMOS NATL LAB,GEOPHYS GRP,LOS ALAMOS,NM 87545. RP PATTON, HJ (reprint author), LAWRENCE LIVERMORE NATL LAB,DIV EARTH SCI,LIVERMORE,CA 94551, USA. NR 41 TC 47 Z9 53 U1 0 U2 4 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD FEB PY 1995 VL 85 IS 1 BP 220 EP 236 PG 17 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QJ469 UT WOS:A1995QJ46900016 ER PT J AU FRANTZ, CE BANGERTER, C FULTZ, E MAYER, KM VOGEL, JS TURTELTAUB, KW AF FRANTZ, CE BANGERTER, C FULTZ, E MAYER, KM VOGEL, JS TURTELTAUB, KW TI DOSE-RESPONSE STUDIES OF MEIQX IN RAT-LIVER AND LIVER DNA AT LOW-DOSES SO CARCINOGENESIS LA English DT Article ID 2-AMINO-3,8-DIMETHYLIMIDAZO<4,5-F>QUINOXALINE; METABOLITES; ADDUCTS; BINDING; MICE AB 2-Amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) is a heterocyclic amine mutagen found in cooked meats and is carcinogenic in mice and rats at high doses (mg/kg body wt). Humans, however, are exposed to low amounts (p.p.b.) in the diet, and the effects caused by exposure to human equivalent doses of MeIQx have been difficult to determine accurately. We report on the effect of MeIQx exposure on liver bioavailability, hepatic DNA binding and MeIQx persistence in both liver tissue and liver DNA after acute (24 h), and subchronic (7 day and 42 day) exposures in male Sprague-Dawley rats. Male Sprague-Dawley rats were administered [2-C-14]MeIQx either by gavage or in the diet for 1, 7 or 42 days (1x10(-6) mg/kg day up to 3.4x10(-2) mg/kg day dose) and the [2-C-14]MeIQx was measured by accelerator mass spectrometry (AMS). Assessment of the kinetics of hepatic MeIQx DNA adduct formation over 42 days (1.1x10(-4) mg [2-C-14]MeIQx kg daily dose) shows that steady-state [2-C-14]MeIQx tissue concentrations of 138 +/- 15 pg/g liver and DNA adduct levels of 113 tr 10 ag adduct/mu g DNA were reached at 14-28 days and 28 days respectively. The relationship between administered dose and either hepatic MeIQx DNA adduct levels or MeIQx tissue levels are linear for the 24 h, 7 day and 42 day exposures. Furthermore, MeIQx adducts persist for at least 14 days after exposure ceases. These data suggest that bioavailability and DNA adduction by MeIQx increase linearly with increasing dose for both acute and subchronic exposures. These data also show that MeIQx DNA adducts are useful in predicting daily exposure and support a linear extrapolation in the risk assessment of MeIQx. However, the quantitative relationship between DNA adducts and tumor formation will also depend on the specific tissue and the subsequent steps needed for tumor progression. C1 LAWRENCE LIVERMORE NATL LAB,BIOL & BIOTECHNOL RES PROGRAM,LIVERMORE,CA 94550. LAWRENCE LIVERMORE NATL LAB,CTR ACCELERATOR MASS SPECTROMETRY,LIVERMORE,CA 94550. FU NCI NIH HHS [CA55861]; NIEHS NIH HHS [ESO4705] NR 27 TC 59 Z9 60 U1 0 U2 1 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0143-3334 J9 CARCINOGENESIS JI Carcinogenesis PD FEB PY 1995 VL 16 IS 2 BP 367 EP 373 DI 10.1093/carcin/16.2.367 PG 7 WC Oncology SC Oncology GA QH261 UT WOS:A1995QH26100029 PM 7859370 ER PT J AU ROY, R SHIOTA, S KENNEL, SJ RAHA, R VONWRONSKI, M BRENT, TP MITRA, S AF ROY, R SHIOTA, S KENNEL, SJ RAHA, R VONWRONSKI, M BRENT, TP MITRA, S TI A COMPARATIVE-STUDY OF THE BIOCHEMICAL-PROPERTIES OF HUMAN AND MOUSE RECOMBINANT O-6-METHYLGUANINE-DNA METHYLTRANSFERASES SO CARCINOGENESIS LA English DT Article ID HUMAN O6-METHYLGUANINE-DNA METHYLTRANSFERASE; DNA-REPAIR PROTEIN; O-6-ALKYLGUANINE-DNA ALKYLTRANSFERASE; ESCHERICHIA-COLI; ALKYLATING-AGENTS; HUMAN-TUMOR; CELLS; CDNA; INACTIVATION; N-METHYL-N'-NITRO-N-NITROSOGUANIDINE AB The O-6-methylguanine-DNA methyltransferase (MGMT) repairs mutagenic and carcinogenic O-6-alkylguanine in DNA by accepting stoichiometrically the alkyl group from the base. Although the mouse MGMT is larger than the human protein because of an additional tetrapeptide sequence, these proteins are 70 % homologous. Recombinant MGMTs of the human, the mouse and a mouse mutant with the tetrapeptide deleted were purified to homogeneity from Escherichia coli. The N-terminal amino acid sequences of these proteins are identical to those predicted from the nucleotide sequences, and their molecular masses determined by SDS-PAGE agreed with the predicted values. However, the observed isoelectric points of 9.3, 9.2 and 9.3, for the human, mouse and mutant mouse proteins respectively were significantly different from the values, 8.09, 7.47 and 7.49 calculated from the amino acid composition. The extinction coefficients E(1%)(280 nm) of human, mouse and mutant mouse protein were calculated from amino acid composition to be 18.2, 11.1 and 11.3 respectively. These values agree fairly well with calculated values. Human and wild-type mouse MGMTs react with the alkylated base in a synthetic DNA substrate poly(dC, dG, m(6)dG) with comparable second-order rate constants of 2.2x10(8) and 3.7x10(8) 1/M/min at 37 degrees C respectively and were inactivated by O-6-benzylguanine at similar rates. The initial reaction rate (K-in) and rate of inactivation (k(inact)) constants for reaction with the base were calculated to be 1.8X10(-4) M and 1.4X10(-3)/s for the human protein, 2.3x10(-4) M and 1.1X10(-3)/s for the wild-type mouse protein, and 2.1X10(-4) M and 1.4x10(-3)/s for the mutant mouse protein respectively. The MGMTs were inactivated to the extent of 55-65 % after heating at 50 degrees C in 20 mM Tris - HCl, pH 8.0, 1 mM EDTA, 1 mM DTT and 10% glycerol. However, in the presence of DNA (200 mu g/ml), only 25-35% of the protein was inactivated. Both DNA and RNA inhibited all three enzymes in a concentration-dependent fashion, although DNA was a better inhibitor than RNA. High salt (0.2 M NaCl) inhibited human MGMT by 80%, while the wild-type and the mutant mouse MGMTs were inhibited by 55%. The human protein had higher affinity for binding to duplex DNAs than the mouse proteins. Immunoprecipitation (69%) and affinity constant (19.4 nM) of human MGMT with a human-specific monoclonal antibody 4.A1 significantly discriminated the human protein from either of the mouse proteins. C1 UNIV TEXAS, MED BRANCH, SEALY CTR MOLEC SCI, GALVESTON, TX 77555 USA. UNIV TEXAS, MED BRANCH, DEPT HUMAN BIOL CHEM & GENET, GALVESTON, TX 77555 USA. OAK RIDGE NATL LAB, DIV BIOL, OAK RIDGE, TN 37831 USA. ST JUDE CHILDRENS RES HOSP, DEPT MOLEC PHARMACOL, MEMPHIS, TN 38101 USA. FU NCI NIH HHS [CA31721, CA21765, CA14799] NR 39 TC 15 Z9 15 U1 0 U2 0 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0143-3334 J9 CARCINOGENESIS JI Carcinogenesis PD FEB PY 1995 VL 16 IS 2 BP 405 EP 411 DI 10.1093/carcin/16.2.405 PG 7 WC Oncology SC Oncology GA QH261 UT WOS:A1995QH26100034 PM 7532116 ER PT J AU DAILY, W RAMIREZ, A AF DAILY, W RAMIREZ, A TI ENVIRONMENTAL PROCESS TOMOGRAPHY IN THE UNITED-STATES SO CHEMICAL ENGINEERING JOURNAL AND THE BIOCHEMICAL ENGINEERING JOURNAL LA English DT Article; Proceedings Paper CT 3rd Meeting of the European Concerted Action Programme on Process Tomography CY MAR, 1994 CL OPORTO, PORTUGAL AB As one consequence of economic growth over the past several decades, the citizens of the United States have inherited an unfortunate legacy of contaminated soil and groundwater. Both the private and public sectors have contributed. From the private sector, has come the waste stream of the industrial revolution. A ubiquitous example is the corner gasoline station: we now acknowledge gasoline leaks from many of these underground storage tanks in the country. A major contribution from the public sector comes from the military establishment. Probably the most serious example here is 'mixed waste' resulting from nuclear weapon production: a mixture of toxic and radioactive wastes such as a hydrocarbon based solvent and uranium which contaminates soil at many government sites. The clean-up has begun but the early optimism has faded to the reality of a two-fold concern: the cost will be enormous using present techniques and, just as disturbing, some of the problems have no known solutions. Clearly, new approaches are needed. In response, the US Government is supporting development of new technology and transfer of existing technology from other disciplines to apply to the problem. Part of this effort is the development of geophysical tools used for underground imaging. These tools are closely related to many of those used in industrial process tomography. Examples of both seismic and electromagnetic process tomography are discussed in relation to environmental remediation of soils and groundwater in the United States. RP DAILY, W (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 14 TC 7 Z9 7 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0923-0467 J9 CHEM ENG J BIOCH ENG JI Chem. Eng. J. Biochem. Eng. J. PD FEB PY 1995 VL 56 IS 3 BP 159 EP 165 DI 10.1016/0923-0467(94)02911-3 PG 7 WC Engineering, Chemical SC Engineering GA QG658 UT WOS:A1995QG65800011 ER PT J AU BYERS, CH AMARNATH, A AF BYERS, CH AMARNATH, A TI UNDERSTAND THE POTENTIAL OF ELECTRO-SEPARATIONS SO CHEMICAL ENGINEERING PROGRESS LA English DT Article ID FILTRATION; FLOW C1 UNIV TENNESSEE,KNOXVILLE,TN 37996. ELECT POWER RES INST,AGR & LARGE COMMERCIAL BUSINESS UNIT,CUSTOMER SYST GRP,PALO ALTO,CA 94303. RP BYERS, CH (reprint author), OAK RIDGE NATL LAB,ENERGY RES SECT,OAK RIDGE,TN 37830, USA. NR 25 TC 10 Z9 10 U1 0 U2 0 PU AMER INST CHEMICAL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0360-7275 J9 CHEM ENG PROG JI Chem. Eng. Prog. PD FEB PY 1995 VL 91 IS 2 BP 63 EP 69 PG 7 WC Engineering, Chemical SC Engineering GA QG340 UT WOS:A1995QG34000016 ER PT J AU SOMOZA, JR CHO, JM KIM, SH AF SOMOZA, JR CHO, JM KIM, SH TI THE TASTE-ACTIVE REGIONS OF MONELLIN, A POTENTLY SWEET PROTEIN SO CHEMICAL SENSES LA English DT Article ID SOLID-PHASE SYNTHESIS; SITE-SPECIFIC MUTAGENESIS; SINGLE-CHAIN MONELLIN; DIOSCOREOPHYLLUM-CUMMINSII; PHENOTYPIC SELECTION; CRYSTALLIZATION; TRANSFORMATION; PRINCIPLE; ANALOG; YEAST AB Monellin, a protein found in the berries of the West African plant Dioscoreophyllum cumminsii, is one of the most potently sweet compounds known. The native three-dimensional structure of monellin is required for sweetness, and this protein has been the subject of intense research in an attempt at understanding the structural basis for its taste activity. We have used structure-based site-directed mutagenesis to delineate the taste-active site(s) of monellin, and we present these results, along with similar work from M. Kohmura, Y. Ariyoshi and coworkers, in the light of the three-dimensional structure of this protein. The mutagenesis work suggests that at least four residues, located N-terminal to the alpha-helix, form part of a taste-active region of monellin. In addition, there is evidence that a second region, formed by,residues in the fourth and fifth beta-strands, may also be contributing to monellin's activity. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. LUCKY BIOTECH RES INST,TAEJON 305380,SOUTH KOREA. FU NIDCD NIH HHS [DC00145] NR 28 TC 40 Z9 40 U1 0 U2 2 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0379-864X J9 CHEM SENSES JI Chem. Senses PD FEB PY 1995 VL 20 IS 1 BP 61 EP 68 DI 10.1093/chemse/20.1.61 PG 8 WC Behavioral Sciences; Food Science & Technology; Neurosciences; Physiology SC Behavioral Sciences; Food Science & Technology; Neurosciences & Neurology; Physiology GA QQ130 UT WOS:A1995QQ13000007 PM 7796059 ER PT J AU XUE, JS ANTONIO, MR SODERHOLM, L AF XUE, JS ANTONIO, MR SODERHOLM, L TI POLYMORPHS OF LN(2)MOO(6) - A NEUTRON-DIFFRACTION INVESTIGATION OF THE CRYSTAL-STRUCTURES OF LA2MOO6 AND TB2MOO6 SO CHEMISTRY OF MATERIALS LA English DT Article AB The structures exhibited by the compounds Ln(2)MoO(6) (Ln = La-Tb) are found to be influenced by synthetic conditions. Crystal structures of two of the three observed polymorphs (gamma and alpha; Ln = La and Tb) have been refined from time-of-flight powder-neutron-diffraction data. The diffraction data obtained from La2MoO6 are inconsistent with the previously reported space group I(4) over bar2$ m but refine well in I4(1)/acd (No. 142). There is no direct evidence in the data to support previous indications that the cell is acentric. The set of (21l) reflections are considerably broadened, and this has been characterized using a stacking fault model with a boundary dimension of every 2.5 unit cells perpendicular to the c axis. Implications of these results are discussed in terms of physical properties, structural relationships, and polymorphic phase transitions within the Ln(2)MoO(6) series. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 18 TC 47 Z9 47 U1 1 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD FEB PY 1995 VL 7 IS 2 BP 333 EP 340 DI 10.1021/cm00050a015 PG 8 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA QG958 UT WOS:A1995QG95800015 ER PT J AU STEWART, FF STEBBINS, JF PETERSON, ES FARNAN, I DUNHAM, SO ADAMS, E JENNINGS, PW AF STEWART, FF STEBBINS, JF PETERSON, ES FARNAN, I DUNHAM, SO ADAMS, E JENNINGS, PW TI MOBILITY AND RELAXATION DETERMINATIONS OF LITHIUM IN LITHIUM ALUMINATE CERAMICS USING SOLID-STATE NMR-SPECTROSCOPY SO CHEMISTRY OF MATERIALS LA English DT Article ID NUCLEAR-MAGNETIC-RESONANCE; TEMPERATURE SI-29 NMR; ALKALI SILICATE; LI-7 NMR; GLASSES; MOTION; BORATE AB Lithium aluminate is one of the materials being considered for fusion reactor blankets. When preparing the ceramic, it is important to be able to monitor the microstructure since it is a controlling factor in the rate of tritium release from the blanket. Nuclear magnetic resonance spectroscopy (NMR) has been shown to be a useful tool for the nondestructive analysis of ceramics. Studies detailed in this paper include spectral acquisition, assignment, spin-lattice relaxation time measurements, temperature effects, their correlation to structure, and material purity. The ceramic of interest was lithium aluminate, LiAl5O8. This material was studied by observation of the NMR active nuclei Li-6, Li-7, and Al-27. For these nuclei, spin-lattice relaxation times (T-1) were measured and were found to vary considerably, correlating to the presence of paramagnetic impurities within the crystalline lattice. Previous research has shown that the coordination about the aluminum nucleus can be determined using Al-27 NMR spectroscopy. Aluminum-27 NMR spectroscopy was successfully applied, and it provided valuable insight into composition of the ceramic. C1 STANFORD UNIV,DEPT GEOL,STANFORD,CA 94305. MONTANA STATE UNIV,DEPT CHEM & BIOCHEM,BOZEMAN,MT 59717. RP STEWART, FF (reprint author), LOCKHEED IDAHO TECHNOL CO,IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. RI Peterson, Eric/B-9127-2017; Farnan, Ian/M-3881-2014 OI Peterson, Eric/0000-0002-2292-4939; Farnan, Ian/0000-0001-7844-5112 NR 20 TC 14 Z9 14 U1 1 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD FEB PY 1995 VL 7 IS 2 BP 363 EP 367 DI 10.1021/cm00050a020 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA QG958 UT WOS:A1995QG95800020 ER PT J AU BAR, G SCOTT, B JOHNSON, SR SWANSON, BI REN, J WHANGBO, MH AF BAR, G SCOTT, B JOHNSON, SR SWANSON, BI REN, J WHANGBO, MH TI CHARACTERIZATION OF HYDROGEN-BOND BREAKING AND SURFACE RECONSTRUCTION IN MIXED-VALENCE CHAIN COMPOUNDS [PT(EN)(2)][PT(EN)(2)X(2)](CLO4)(4) BY ATOMIC-FORCE MICROSCOPY SO CHEMISTRY OF MATERIALS LA English DT Article ID SCANNING-TUNNELING-MICROSCOPY; PLATINUM COMPLEXES; METAL-COMPLEXES; RAMAN-SPECTRA; STM IMAGES; MX SOLIDS; BEDT-TTF; C-H...O; SOLITON; CRYSTAL AB Mixed-valence compounds [Pt(en)(2)][Pt(en)(2)I-2](ClO4)(4) and [Pt(en)(2)][Pt(en)(2)(Br0.8I0.2)(2)](ClO4)(4) (en = 1,2-diaminoethane) were examined by atomic force microscopy (AFM), and the obtained images were analyzed by calculating the total electron density plots of their surfaces. The patterns of the AFM images are dominated by the most protruded H atoms of the en ligands and the most protruded O atoms of the ClO4- anions. The AFM image of [Pt(en)(2)][Pt(en)(2)I-2](ClO4)(4) shows patterns of the be plane surface expected from the bulk crystal structure. The AFM image of [Pt(en)(2)][Pt(en)(2)(Br0.8I0.2)(2)](ClO4)(4) is generally consistent with the ab plane surface expected from the bulk structure, but the pattern representing the ClO4- anions differs substantially from that expected from the bulk crystal structure. This discrepancy is explained in terms of a rearrangement involving the lower-lying ClO4- anions at the ab plane surface. Analysis of the N-H...O and C-H...O hydrogen bond contacts suggests that these ClO4- anions optimize their N-H...O hydrogen bonding interactions with the help of this rearrangement. C1 N CAROLINA STATE UNIV, DEPT CHEM, RALEIGH, NC 27695 USA. RP BAR, G (reprint author), LOS ALAMOS NATL LAB, CHEM SCI & TECHNOL GRP CST-14, LOS ALAMOS, NM 87545 USA. RI Scott, Brian/D-8995-2017 OI Scott, Brian/0000-0003-0468-5396 NR 54 TC 4 Z9 4 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD FEB PY 1995 VL 7 IS 2 BP 391 EP 399 DI 10.1021/cm00050a025 PG 9 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA QG958 UT WOS:A1995QG95800025 ER PT J AU SOUTHWORTH, GR TURNER, RR PETERSON, MJ BOGLE, MA AF SOUTHWORTH, GR TURNER, RR PETERSON, MJ BOGLE, MA TI FORM OF MERCURY IN STREAM FISH EXPOSED TO HIGH-CONCENTRATIONS OF DISSOLVED INORGANIC MERCURY SO CHEMOSPHERE LA English DT Article AB The form of mercury predominating in mercury-contaminated fish from both pristine and industrialized waters in North America and Europe has almost universally been methylmercury. Sunfish (Lepomis auritus) living in a stream contaminated with 0.5 -1 mu g/L dissolved inorganic mercury accumulated greater concentrations of total mercury at headwater sites, where the dissolved mercury concentrations were greatest, than they did at downstream sites. However, despite evidence from laboratory studies that dissolved inorganic mercury is rapidly accumulated by fish without transformation to methylmercury, methylmercury constituted 85% or more of the total mercury concentration in fish at all sites. C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. NR 16 TC 32 Z9 33 U1 0 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-6535 J9 CHEMOSPHERE JI Chemosphere PD FEB PY 1995 VL 30 IS 4 BP 779 EP 787 DI 10.1016/0045-6535(94)00407-L PG 9 WC Environmental Sciences SC Environmental Sciences & Ecology GA QK016 UT WOS:A1995QK01600016 PM 7889351 ER PT J AU GLASSER, RD AF GLASSER, RD TI LINKING SCIENCE MORE CLOSELY TO POLICY-MAKING - GLOBAL CLIMATE-CHANGE AND THE NATIONAL REORGANIZATION OF SCIENCE AND TECHNOLOGY POLICY SO CLIMATIC CHANGE LA English DT Article AB This paper examines the national trends behind recent efforts to link scientific research more closely to policy-making. It discusses the evolution of these efforts within the Clinton Administration in general and the U.S. Global Change Research Program (USGCRP) in particular. The paper describes the politics surrounding the establishment of the National Science and Technology Council (NSTC) and its Committee on Environment and Natural Resources, of which the USGCRP is a part, and concludes with an appraisal of the NSTC and of the ''assessments'' component of the USGCRP. RP GLASSER, RD (reprint author), LOS ALAMOS NATL LAB,CTR NATL SECUR STUDIES,LOS ALAMOS,NM, USA. NR 22 TC 2 Z9 2 U1 0 U2 3 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0165-0009 J9 CLIMATIC CHANGE JI Clim. Change PD FEB PY 1995 VL 29 IS 2 BP 131 EP 143 DI 10.1007/BF01094013 PG 13 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA QG639 UT WOS:A1995QG63900002 ER PT J AU BEDAT, B CHENG, RK AF BEDAT, B CHENG, RK TI EXPERIMENTAL-STUDY OF PREMIXED FLAMES IN INTENSE ISOTROPIC TURBULENCE SO COMBUSTION AND FLAME LA English DT Article; Proceedings Paper CT 25th International Symposium on Combustion CY JUL 31-AUG 05, 1994 CL IRVINE, CA ID COMBUSTION AB A methodology for investigating premixed turbulent flames propagating in intense isotropic turbulence has been developed. The burner uses a turbulence generator developed by Videto and Santavicca and the flame is stabilized by weak-swirl generated by air injectors. This setup produces stable premixed turbulent flames under a wide range of mixture conditions and turbulence intensities. The experiments are designed to investigate systematically the changes in flame structures for conditions which can be classified as wrinkled laminar flames, corrugated flames, and flames with distributed reaction zones. Laser Doppler anemometry and Rayleigh scattering techniques are used to determine the turbulence and scalar statistics. In the intense turbulence, the flames are found to produce very little changes in the mean and rms velocities. Their flame speed increase linearly with turbulence intensity as for wrinkled laminar flames. The Rayleigh scattering probability density functions (pdfs) for flames within the distributed reaction zone regime are distinctly bimodal. The probabilities of the reacting states (i.e. contributions from within the reaction zone) is not higher than those of wrinkled laminar flame. These results show that there is no drastic changes in flame structures at Karlovitz number close to unity. This suggest that the Klimov-Williams criterion underpredicts the resilience of wrinkled flamelets to intense turbulence. C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV ENERGY & ENVIRONM, COMBUST GRP, BERKELEY, CA 94720 USA. NR 19 TC 96 Z9 98 U1 0 U2 11 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0010-2180 EI 1556-2921 J9 COMBUST FLAME JI Combust. Flame PD FEB PY 1995 VL 100 IS 3 BP 485 EP 494 DI 10.1016/0010-2180(94)00138-I PG 10 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA QN247 UT WOS:A1995QN24700017 ER PT J AU PATANKAR, AK ADIGA, S AF PATANKAR, AK ADIGA, S TI ENTERPRISE INTEGRATION MODELING - A REVIEW OF THEORY AND PRACTICE SO COMPUTER INTEGRATED MANUFACTURING SYSTEMS LA English DT Article DE ENTERPRISE; INTEGRATION; MODELING; CIM; ARCHITECTURES AB A survey of the theory and practice of enterprise integration modelling (EIM) is presented. The emphasis is on the presentation of ideas that are useful for EIM implementations. Clear and concise definitions of the main concepts are presented. These ideas serve as the basis for a discussion of various EIM reference architectures. Important potential research issues and obstacles are identified and a few prototype systems analysed. The paper concludes with guidelines for EIM implementations, and suggestions for modifications to the current approach. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV INFORMAT & COMP SCI,BERKELEY,CA 94720. RP PATANKAR, AK (reprint author), UNIV CALIF BERKELEY,DEPT IND ENGN & OPERAT RES,BLDG 50B,RM 3238,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 24 TC 13 Z9 16 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0951-5240 J9 COMPUT INTEGR MANUF JI Comput. Integr. Manuf. Syst. PD FEB PY 1995 VL 8 IS 1 BP 21 EP 34 DI 10.1016/0951-5240(95)92810-H PG 14 WC Computer Science, Interdisciplinary Applications; Engineering, Manufacturing; Operations Research & Management Science SC Computer Science; Engineering; Operations Research & Management Science GA QL552 UT WOS:A1995QL55200004 ER PT J AU BRYAN, AL COULTER, MC PENNYCUICK, CJ AF BRYAN, AL COULTER, MC PENNYCUICK, CJ TI FORAGING STRATEGIES AND ENERGETIC COSTS OF FORAGING FLIGHTS BY BREEDING WOOD STORKS SO CONDOR LA English DT Article DE ENERGETICS; FORAGING STRATEGIES; FLIGHT; FLAPPING; MYCTERIA AMERICANA; SOARING; WOOD STORK AB Wood Storks (Mycteria americana) were followed (n = 269) from their colony in east-central Georgia to foraging sites to examine the foraging travel strategies of these birds. Most sites were relatively close to the colony (median distance = 8.8 km) requiring short travel times (median time = 22.52 min). Directness ratios (total distance flown/direct distance) for 89 mapped foraging flights suggested that storks hew relatively straight paths to feeding areas. Comparison of flight (air) speeds determined from this data with speeds determined from energetics models suggested that storks minimized flight energy costs rather that maximized range during foraging travel. Estimated energetic costs of flapping and soaring modes of flight were 204.8 W and 18.1 W, respectively. Seasonal analyses indicated that storks employed soaring flight more frequently in the latter half of the breeding season when they traveled to more distant sites. Energetic costs did not vary seasonally due to the increase in use of the energetically conservative soaring mode of travel on the longer flights. Observations at the colony indicated that foraging trip durations were constant throughout the season and that parents met increased nestling food demand by increasing the frequency of foraging trips. C1 UNIV MIAMI,DEPT BIOL,CORAL GABLES,FL 33124. RP BRYAN, AL (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29802, USA. NR 19 TC 21 Z9 21 U1 1 U2 7 PU COOPER ORNITHOLOGICAL SOC PI LAWRENCE PA ORNITHOLOGICAL SOC NORTH AMER PO BOX 1897, LAWRENCE, KS 66044-8897 SN 0010-5422 J9 CONDOR JI Condor PD FEB PY 1995 VL 97 IS 1 BP 133 EP 140 DI 10.2307/1368991 PG 8 WC Ornithology SC Zoology GA QK938 UT WOS:A1995QK93800014 ER PT J AU KNIGHT, RL CRAIG, GR SMITH, MH GRIER, JW MCLEAN, RG AF KNIGHT, RL CRAIG, GR SMITH, MH GRIER, JW MCLEAN, RG TI GENETIC-VARIATION AND NESTING BALD EAGLES SO CONDOR LA English DT Note C1 COLORADO DIV WILDLIFE,FT COLLINS,CO 80526. SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. N DAKOTA STATE UNIV,DEPT ZOOL,FARGO,ND 58105. CTR DIS CONTROL & PREVENT,DIV VECTOR BORNE INFECT DIS,FT COLLINS,CO 80523. RP KNIGHT, RL (reprint author), COLORADO STATE UNIV,DEPT FISHERY & WILDLIFE BIOL,FT COLLINS,CO 80523, USA. NR 16 TC 1 Z9 1 U1 1 U2 2 PU COOPER ORNITHOLOGICAL SOC PI LAWRENCE PA ORNITHOLOGICAL SOC NORTH AMER PO BOX 1897, LAWRENCE, KS 66044-8897 SN 0010-5422 J9 CONDOR JI Condor PD FEB PY 1995 VL 97 IS 1 BP 282 EP 283 DI 10.2307/1369008 PG 2 WC Ornithology SC Zoology GA QK938 UT WOS:A1995QK93800031 ER PT J AU STAUDIGEL, H DAVIES, GR HART, SR MARCHANT, KM SMITH, BM AF STAUDIGEL, H DAVIES, GR HART, SR MARCHANT, KM SMITH, BM TI LARGE-SCALE ISOTOPIC SR, ND AND O ISOTOPIC ANATOMY OF ALTERED OCEANIC-CRUST - DSDP/ODP SITES-417/418 SO EARTH AND PLANETARY SCIENCE LETTERS LA English DT Article ID FUCA RIDGE; HYDROTHERMAL SYSTEMS; TROODOS-OPHIOLITE; OXYGEN; STRONTIUM; SEAWATER; BASALTS; CYPRUS; ROCKS; JUAN AB Large-scale compositional domains at DSDP/ODP drill sites 417A, 417D and 418A were analyzed for O, Sr and Nd isotope ratios, and REE, U, K, Rb and Sr abundances, to constrain the bulk chemical composition of the oceanic crust that is recycled at subduction zones. The combination of the three sites gives the composition of the upper oceanic crust in this region over a distance of about 8 km. The delta(18)O(SMOW) and Sr-87/Sr-86(meas) of compositional domains 10-100 m in size correlate well, with a range of 7.7-19.2 and 0.70364-0.70744, and mean of 9.96 and 0.70475, respectively. The Rb inventory of the upper crust increases by about an order of magnitude, while Sr contents remain constant. U abundances increase moderately under oxidizing alteration conditions and nearly triple in the commonly reducing alteration environments of the upper oceanic crust. REEs are influenced by alteration only to a small extent, and recycled oceanic crust is similar to MORE with respect to Nd-143/Nd-144. Even though the average composition of the upper oceanic crust is well defined, the large scale composition varies widely. Highly altered compositional domains may not have a large impact on the average composition of the oceanic crust, but they may preferentially contribute to fluids or partial melts derived from the crust by prograde metamorphic reactions. C1 WOODS HOLE OCEANOG INST,WOODS HOLE,MA 02543. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,INST GEOPHYS & PLANETARY PHYS,LA JOLLA,CA 92093. RP STAUDIGEL, H (reprint author), VRIJE UNIV AMSTERDAM,NETHERLANDS RES SCH SEDIMENTARY,CTR ISOTOPE GEOL,DE BOELELAAN 1085,1081 HV AMSTERDAM,NETHERLANDS. NR 58 TC 212 Z9 217 U1 2 U2 23 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0012-821X J9 EARTH PLANET SC LETT JI Earth Planet. Sci. Lett. PD FEB PY 1995 VL 130 IS 1-4 BP 169 EP 185 DI 10.1016/0012-821X(94)00263-X PG 17 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QK183 UT WOS:A1995QK18300014 ER PT J AU TURNER, MG ARTHAUD, GJ ENGSTROM, RT HEJL, SJ LIU, JG LOEB, S MCKELVEY, K AF TURNER, MG ARTHAUD, GJ ENGSTROM, RT HEJL, SJ LIU, JG LOEB, S MCKELVEY, K TI USEFULNESS OF SPATIALLY EXPLICIT POPULATION-MODELS IN LAND MANAGEMENT SO ECOLOGICAL APPLICATIONS LA English DT Article DE HABITAT MODEL; LAND MANAGEMENT; LANDSCAPE ECOLOGY; RESOURCE MANAGEMENT; SCALE; SPATIAL MODEL ID LANDSCAPE; DIVERSITY AB Land managers need new tools, such as spatial models, to aid them in their decision-making processes because managing for biodiversity, water quality, or natural disturbance is challenging, and landscapes are complex and dynamic. Spatially explicit population models are helpful to managers because these models consider both species-habitat relationships and the arrangement of habitats in space and time. The visualizations that typically accompany spatially explicit models also permit managers to ''see'' the effects of alternative management strategies on populations of interest. However, the expense entailed in developing the data bases required for spatially explicit models may limit widespread implementation. In addition, many of the models are developed for one or a few species, and dealing with multiple species in a landscape remains a significant challenge. To be most useful to land managers, spatially explicit population models should be user friendly, easily portable, operate on spatial and temporal scales appropriate to management decisions, and use input and output variables that can be measured affordably. C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. UNIV GEORGIA,SCH FOREST RESOURCES,ATHENS,GA 30602. TALL TIMBERS RES INC,TALLAHASSEE,FL 32312. US FOREST SERV,INTERMT RES STN,MISSOULA,MT 59807. HARVARD UNIV,INST INT DEV,CAMBRIDGE,MA 02138. CLEMSON UNIV,US FOREST SERV,SE FOREST EXPT STN,DEPT FOREST RESOURCES,CLEMSON,SC 29634. US FOREST SERV,REDWOOD SCI LAB,ARCATA,CA 95521. RI Turner, Monica/B-2099-2010 NR 20 TC 125 Z9 135 U1 0 U2 22 PU ECOLOGICAL SOC AMER PI TEMPE PA ARIZONA STATE UNIV CENTER ENVIRONMENTAL STUDIES, TEMPE, AZ 85287 SN 1051-0761 J9 ECOL APPL JI Ecol. Appl. PD FEB PY 1995 VL 5 IS 1 BP 12 EP 16 DI 10.2307/1942046 PG 5 WC Ecology; Environmental Sciences SC Environmental Sciences & Ecology GA QK276 UT WOS:A1995QK27600004 ER PT J AU CONROY, MJ COHEN, Y JAMES, FC MATSINOS, YG MAURER, BA AF CONROY, MJ COHEN, Y JAMES, FC MATSINOS, YG MAURER, BA TI PARAMETER-ESTIMATION, RELIABILITY, AND MODEL IMPROVEMENT FOR SPATIALLY EXPLICIT MODELS OF ANIMAL POPULATIONS SO ECOLOGICAL APPLICATIONS LA English DT Article DE ADAPTIVE MANAGEMENT; ESTIMATION; FORECASTING; MODEL IMPROVEMENT; MODEL RELIABILITY; POPULATION MODELS; SENSITIVITY ANALYSIS; SPATIALLY EXPLICIT MODELS; VALIDATION AB We address model specification, parameter estimation, and model reliability for spatially explicit population models (SEPMs). We assume that these models have the complementary goals of understanding the processes that influence the number and distribution of animals in space and time, and forecasting the effect of management or other human activities on population abundance and distribution. Incorrect model structure, parameter estimates, or both will result in unreliable model output. Spatially explicit models require knowledge of population spatial structure, dispersal, and movement rates, in addition to the usual demographic parameters and structural assumptions such as density-dependence, and are thus potentially very vulnerable to propagation of model uncertainty. Sensitivity analysis and validation can both be used to evaluate the reliability of SEPMs, but the level of spatiotemporal resolution at which the model should be evaluated is often not clear. Many SEPMs are very complex, and validation may only be possible or meaningful on a sub-model basis. Forecasting, that is, prediction under a different set of conditions than that under which the model was built, will provide a stronger test of model reliability. Forecasts from SEPMs can be used to generate hypotheses that can then be tested as parts of large-scale adaptive management experiments. In this way resource management goals can be achieved, while providing enhanced understanding of systems and improved predictability of future scenarios. C1 UNIV MINNESOTA,DEPT FISHERIES & WILDLIFE,ST PAUL,MN 55108. FLORIDA STATE UNIV,DEPT BIOL SCI,TALLAHASSEE,FL 32306. UNIV TENNESSEE,GRAD PROGRAM ECOL,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. BRIGHAM YOUNG UNIV,DEPT ZOOL,PROVO,UT 84602. RP CONROY, MJ (reprint author), UNIV GEORGIA,US NATL BIOL SURVEY,SCH FOREST RESOURCES,COOPERAT FISH & WILDLIFE RES UNIT,ATHENS,GA 30602, USA. NR 16 TC 110 Z9 113 U1 0 U2 19 PU ECOLOGICAL SOC AMER PI TEMPE PA ARIZONA STATE UNIV CENTER ENVIRONMENTAL STUDIES, TEMPE, AZ 85287 SN 1051-0761 J9 ECOL APPL JI Ecol. Appl. PD FEB PY 1995 VL 5 IS 1 BP 17 EP 19 DI 10.2307/1942047 PG 3 WC Ecology; Environmental Sciences SC Environmental Sciences & Ecology GA QK276 UT WOS:A1995QK27600005 ER PT J AU KAHN, JR MCDONALD, JA AF KAHN, JR MCDONALD, JA TI THIRD-WORLD DEBT AND TROPICAL DEFORESTATION SO ECOLOGICAL ECONOMICS LA English DT Article DE DEBT; DEFORESTATION; DEVELOPING COUNTRIES AB The deforestation and degradation of tropical forests are taking place at an extremely rapid pace. According to the Food and Agriculture Organization (FAO), the estimated annual rate of tropical deforestation during the 1981-1985 period was 113 846 square kilometers or 0.6% of the 1981 total forested area. The implications of the loss of these forests are staggering (Myers, N., 1989. Deforestation Rates in Tropical Forests and Their Climatic Implications. Friends of the Earth, London). Tropical forests are extremely rich ecosystems which support a disproportionately large share of the world's plant and animal species. Forests play a crucial role in both nutrient and hydrological cycling and may provide sustainable economic benefits through managed harvesting of timber and the collection of non-timber products such as fruits, nuts, and rubber. Also, deforestation is a significant source of global warming through its effects on the global carbon cycle. This paper focuses on the relationship between debt and deforestation, examining conceptual and empirical arguments that debt is a source of deforestation pressure. Our study develops a behavioral model which suggests that debt can lead to myopic behavior, leading to deforestation rates that may not be optimal in the long run, but are necessary in the short run to meet current constraints. Then, country-by-country data on debt, deforestation, and other variables are analyzed with regression analysis. It is shown that debt is significantly correlated with deforestation under a wide variety of assumptions and specifications. Our results indicate that debt is an important factor in the deforestation of tropical countries. There are certainly other sources of deforestation, both micro- and macroeconomic, which may vary significantly from country to country. However, we focus on debt because of its dominant role in the economies of developing countries, and because of the increased use of debt-for-nature swaps. The link between debt and deforestation that is suggested in this paper implies that debt-for-nature swaps may have a dual effect on deforestation. First, the contractual agreement is designed to preserve forests as part of the swap. Second, the reduction in debt may itself reduce the pressure to deforest, although this indirect effect is small. Our research provides evidence that reducing debt reduces deforestation, which may be an argument to offer deforesting third-world countries some form of debt relief, and to utilize more fully debt-for-nature swaps as a tool for preserving environmental quality. C1 OAK RIDGE NATL LAB,DIV ENERGY,OAK RIDGE,TN 37831. LEHIGH UNIV,RAUCH BUSINESS CTR,DEPT ECON,BETHLEHEM,PA 18015. RP KAHN, JR (reprint author), UNIV TENNESSEE,DEPT ECON,KNOXVILLE,TN 37996, USA. NR 22 TC 36 Z9 36 U1 1 U2 54 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8009 J9 ECOL ECON JI Ecol. Econ. PD FEB PY 1995 VL 12 IS 2 BP 107 EP 123 DI 10.1016/0921-8009(94)00024-P PG 17 WC Ecology; Economics; Environmental Sciences; Environmental Studies SC Environmental Sciences & Ecology; Business & Economics GA QH955 UT WOS:A1995QH95500002 ER PT J AU LAMB, T BICKHAM, JW LYNE, TB GIBBONS, JW AF LAMB, T BICKHAM, JW LYNE, TB GIBBONS, JW TI THE SLIDER TURTLE AS AN ENVIRONMENTAL SENTINEL - MULTIPLE TISSUE-ASSAYS USING FLOW CYTOMETRIC ANALYSIS SO ECOTOXICOLOGY LA English DT Article DE TRACHEMYS SCRIPTA; FLOW CYTOMETRY; BIOMARKERS; SENTINEL; POLLUTION ID PSEUDEMYS-SCRIPTA; DNA CONTENT; DAMAGE; POPULATIONS; CHROMOSOMES; CELLS AB We used flow cytometry (FCM) to conduct a multiple-tissue assay on slider turtles (Trachemys scripta) inhabiting radioactive seepage basins. Duplicate samples of blood, heart, spleen and kidney were analysed on two different cytometers (Leitz MPV and Coulter Profile II), each employing distinct staining protocols (DAPI and PI, respectively). Both DAPI and PI assays of spleen cells demonstrated significantly greater variation in DNA content for the basin turtles than for 'control' animals from nearby, uncontaminated sites. Basin turtles also exhibited significant cell-cycle effects for blood and spleen, again revealed by both assays. These corroborative findings demonstrate the consistency and repeatability of FCM assays in environmental monitoring and identify the particularly sensitive nature of turtle blood and spleen to mutagenic agents. Our survey complements previous FCM studies on sliders from contaminated sites and thereby underscores the species' potential as a sentinel for biomarker assays. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. E CAROLINA UNIV,DEPT BIOL,GREENVILLE,NC 27858. TEXAS A&M UNIV,DEPT WILDLIFE & FISHERIES SCI,COLLEGE STN,TX 77843. LGL ECOL GENET INC,BRYAN,TX 77801. NR 30 TC 36 Z9 36 U1 0 U2 2 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0963-9292 J9 ECOTOXICOLOGY JI Ecotoxicology PD FEB PY 1995 VL 4 IS 1 BP 5 EP 13 PG 9 WC Ecology; Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA QT659 UT WOS:A1995QT65900002 PM 24197546 ER PT J AU SANCHEZ, RD TORRESI, RM RETTORI, C OSEROFF, S FISK, Z AF SANCHEZ, RD TORRESI, RM RETTORI, C OSEROFF, S FISK, Z TI ELECTROCHEMICAL INTERCALATION OF O2- IN LA2CUO4 SINGLE-CRYSTALS SO ELECTROCHIMICA ACTA LA English DT Article DE SUPERCONDUCTIVITY; LA2CUO4 SINGLE CRYSTAL; ELECTROCHEMICAL INTERCALATION; DIFFUSION PROCESSES ID OXIDIZED LA2CUO4+DELTA; OXIDATION AB The electrochemical intercalation of oxygen in La2CuO4 single crystals was studied using electron paramagnetic resonance and magnetic susceptibility measurements. Chronoamperometric experiments showed that, in the intercalation process, the O2- diffusion in single crystals is extremely slow (D approximate to 10(-16) cm(2) S-1). This diffusion coefficient depends strongly on temperature and the enthalpy diffusion was found to be ca. 750 kJ deg(-1) mol(-1). Crystals under electro-oxidation for one to two weeks still show the presence of the antiferromagnetic and a superconducting phases. This was supported by the simultaneous observation of line splitting in the EPR spectra and superconducting diamagnetic signal. C1 UNIV CAMPINAS,INST FIS GLEB WATAGHIN,BR-13083970 CAMPINAS,BRAZIL. SAN DIEGO STATE UNIV,DEPT PHYS,SAN DIEGO,CA 92182. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RI Sanchez, Rodolfo/G-1201-2011; Rettori, Carlos/C-3966-2012; Torresi, Roberto/E-6523-2012; Institute of Chemistry - USP, Dept. of Chemistry/B-8988-2012; Inst. of Physics, Gleb Wataghin/A-9780-2017 OI Rettori, Carlos/0000-0001-6692-7915; NR 17 TC 9 Z9 10 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0013-4686 J9 ELECTROCHIM ACTA JI Electrochim. Acta PD FEB PY 1995 VL 40 IS 2 BP 209 EP 212 DI 10.1016/0013-4686(94)00283-7 PG 4 WC Electrochemistry SC Electrochemistry GA QL693 UT WOS:A1995QL69300008 ER PT J AU GOTTESFELD, S AF GOTTESFELD, S TI POLYMER ELECTROLYTE FUEL-CELLS SO ELECTROCHIMICA ACTA LA English DT Editorial Material RP GOTTESFELD, S (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 0 TC 7 Z9 7 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0013-4686 J9 ELECTROCHIM ACTA JI Electrochim. Acta PD FEB PY 1995 VL 40 IS 3 BP 283 EP 283 DI 10.1016/0013-4686(95)90313-5 PG 1 WC Electrochemistry SC Electrochemistry GA QM499 UT WOS:A1995QM49900004 ER PT J AU ZAWODZINSKI, TA DAVEY, J VALERIO, J GOTTESFELD, S AF ZAWODZINSKI, TA DAVEY, J VALERIO, J GOTTESFELD, S TI THE WATER-CONTENT DEPENDENCE OF ELECTROOSMOTIC DRAG IN PROTON-CONDUCTING POLYMER ELECTROLYTES SO ELECTROCHIMICA ACTA LA English DT Article DE TRANSPORT; NAFION; POLY(PERFLUOROSULFONIC) ACID; FUEL CELL; MEMBRANE; ELCTROOSMOSIS ID ION-EXCHANGE MEMBRANES; SOLVENT TRANSPORT; MODEL; ACID AB The water transport numbers for protons in a variety of available poly (perfluorosulfonic acid) membranes are presented as a function of water content. The data indicate that, for membranes equilibrated with water vapor over a wide range of activities, a water drag coefficient of unity is observed. Several implications of these results, both fundamental and for fuel cell applications, are discussed. RP ZAWODZINSKI, TA (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 19 TC 404 Z9 407 U1 1 U2 29 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0013-4686 J9 ELECTROCHIM ACTA JI Electrochim. Acta PD FEB PY 1995 VL 40 IS 3 BP 297 EP 302 DI 10.1016/0013-4686(94)00277-8 PG 6 WC Electrochemistry SC Electrochemistry GA QM499 UT WOS:A1995QM49900007 ER PT J AU WILSON, MS VALERIO, JA GOTTESFELD, S AF WILSON, MS VALERIO, JA GOTTESFELD, S TI LOW PLATINUM LOADING ELECTRODES FOR POLYMER ELECTROLYTE FUEL-CELLS FABRICATED USING THERMOPLASTIC IONOMERS SO ELECTROCHIMICA ACTA LA English DT Article DE POLYMER ELECTROLYTE; FUEL CELL; ELECTRODE; ELECTROCATALYST; PLATINUM ID MEMBRANES; FILMS; MODEL AB Low platinum loading catalyst layers for polymer electrolyte fuel cells (PEFCs) consist of a thin film of highly inter-mixed ionomer and catalyst that is applied to the electrolyte membrane. High performances are achieved with loadings as low as 0.12 mgPt cm(-2) at the cathode and even lower loadings are required at the anode. However, the long-term performance of these fuel cells depends upon the structural integrity of the recast, ionomer-bound catalyst layers. The discovery that the inclusion of large cations through a simple ion-exchange process renders perfluorosulfonate ionomers moderately melt-processable is exploited to significantly improve the structural integrity of the catalyst layers. When the thermoplastic form of the solubilized ionomer is used in the membrane catalyzation process, the reproducibility is greatly improved and the long-term performance losses are quite low. Overall, the fuel cells demonstrate less than 10% loss in maximum power over almost 4000 h. An indication of the durability of the catalyst layer and the integrity of the catalyst layer/membrane interface is provided by the high tolerance of such fuel cells to shut-down/start-up and freeze-thaw cycles. Various other aspects of endurance testing and overall operation of such PEFCs are also discussed. RP WILSON, MS (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 19 TC 381 Z9 392 U1 7 U2 43 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0013-4686 J9 ELECTROCHIM ACTA JI Electrochim. Acta PD FEB PY 1995 VL 40 IS 3 BP 355 EP 363 DI 10.1016/0013-4686(94)00272-3 PG 9 WC Electrochemistry SC Electrochemistry GA QM499 UT WOS:A1995QM49900015 ER PT J AU MEIER, A SOLOMON, B AF MEIER, A SOLOMON, B TI THE EPAS PROTOCOLS FOR VERIFYING SAVINGS FROM UTILITY ENERGY-CONSERVATION PROGRAMS SO ENERGY LA English DT Article AB As part of its acid rain program, the U.S. EPA has established a system of tradable SO2 emission allowances. The regulations also permit electric utilities to earn emission allowances through conservation programs. The utility may verify the savings with ''Conservation Verification Protocols (CVPs)''. Use of the CVPs encourages monitoring and establishes a consistent procedure for evaluating electricity savings in all sectors and electrical end uses. In limited cases where the energy savings can be reliably predicted, the CVPs are used to stipulate savings or a procedure to calculate them. The CVPs represent new concepts, including a procedure for linking the amount of savings to confidence that they occurred and a flexible approach to estimation of subsequent-year energy savings. The CVPs are now being used by utilities and some of these have submitted applications for verified savings. C1 US EPA,DIV ACID RAIN,WASHINGTON,DC 20460. RP MEIER, A (reprint author), LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-5442 J9 ENERGY JI Energy PD FEB PY 1995 VL 20 IS 2 BP 105 EP 115 DI 10.1016/0360-5442(94)00065-B PG 11 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA QD287 UT WOS:A1995QD28700004 ER PT J AU KYDES, AS SHAW, SH MCDONALD, DF AF KYDES, AS SHAW, SH MCDONALD, DF TI BEYOND-THE-HORIZON - RECENT DIRECTIONS IN LONG-TERM ENERGY MODELING SO ENERGY LA English DT Article ID ENVIRONMENTAL-REGULATION AB Extending time horizons for energy analysis increases both the cumulative effect of gradual structural changes and the likelihood of revolutionary innovations, on scales ranging from individual end-use sectors or regions to the entire global economy. Distinguishing features of long-term modeling therefore include technological change (e.g., new technologies or factor substitution), shifts in energy supply (due to exhaustion of conventional sources or the emergence of new sources), and dynamic energy-economy interactions (the impact of growth on energy demand and simultaneous role of the energy sector in determining growth paths). A taxonomy of model types including computable general equilibrium (CGE), aggregate optimization, and energy-sector models can be defined based on their scope of coverage (partial vs general equilibrium) and behavioral outlook (simulation vs optimization). This paper identifies the motivation and key attributes of each model type with reference to several particular specifications. C1 WASHINGTON CONSULTING GRP INC,DIV RES & ANAL,WASHINGTON,DC 20036. RP KYDES, AS (reprint author), US DOE,ENERGY INFORMAT ADM,OFF INTEGRATED ANAL & FORECASTING,WASHINGTON,DC 20585, USA. NR 51 TC 11 Z9 11 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-5442 J9 ENERGY JI Energy PD FEB PY 1995 VL 20 IS 2 BP 131 EP 149 DI 10.1016/0360-5442(94)00060-G PG 19 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA QD287 UT WOS:A1995QD28700007 ER PT J AU FRIEDMANN, R DEBUEN, O SATHAYE, J GADGIL, A SAUCEDO, R RODRIGUEZ, G AF FRIEDMANN, R DEBUEN, O SATHAYE, J GADGIL, A SAUCEDO, R RODRIGUEZ, G TI ASSESSING THE RESIDENTIAL LIGHTING EFFICIENCY OPPORTUNITIES IN GUADALAJARA AND MONTERREY, MEXICO SO ENERGY LA English DT Article ID ELECTRICITY DEMAND; SECTOR AB Lighting, primarily with incandescent bulbs, is the major end use of electricity in Mexican homes. The introduction of compact fluorescent lamps (CFLs) could significantly reduce electricity use in lighting. We describe a survey of lighting use in homes of Guadalajara and Monterrey, Mexico, that was conducted to provide information to determine the potential for CFLs. The results show that 1/6 of the incandescent bulbs can be replaced with CFLs if only those bulbs used more than 4 hours per day are targeted. We also provide insights on conducting similar surveys in other developing countries. C1 COMIS FED ELECT,SUBDIRECC DISTRIBUC GERENCIA COMERCIAL SUBGERENCIA EVALUAC,MEXICO CITY 06598,DF,MEXICO. CTR ESTUDIOS ENERGETICOS AC,MEXICO CITY 11500,DF,MEXICO. RP FRIEDMANN, R (reprint author), LAWRENCE BERKELEY LAB,DIV ENERGY & ENVIRONM,ENERGY ANAL PROGRAM,BERKELEY,CA 94720, USA. OI Gadgil, Ashok/0000-0002-0357-9455 NR 21 TC 9 Z9 9 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-5442 J9 ENERGY JI Energy PD FEB PY 1995 VL 20 IS 2 BP 151 EP 159 DI 10.1016/0360-5442(94)00064-A PG 9 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA QD287 UT WOS:A1995QD28700008 ER PT J AU TRENT, BC MARGOLIN, LG AF TRENT, BC MARGOLIN, LG TI NUMERICAL VALIDATION OF A CONSTITUTIVE THEORY FOR AN ARBITRARILY FRACTURED SOLID SO ENGINEERING COMPUTATIONS LA English DT Article; Proceedings Paper CT 2nd US Conference on Discrete Element Methods CY MAR, 1993 CL MIT, CAMBRIDGE, MA HO MIT DE CONSTITUTIVE THEORY; GRANULAR MATERIAL; MICROMECHANICAL MODEL AB We have developed a general constitutive theory that estimates the effective elastic moduli of a cemented granular material by applying statistical mechanical averaging to a purely micromechanical model. We have also constructed a distinct element model of a cemented granular material, based on the same micromechanical model, which accounts for the elastic forces due to bonding between pairs of spherical particles, and which allows for the possibility of anisotropic damage to the bonds. In this paper, we use a model based on the distinct element method (DEM) to validate the predictions of the theory for various prescribed patterns of damage. In particular we impose several anisotropic patterns of damage on the bonds of a randomly generated assembly of particles. We then undertake numerical experiments, sending both p-waves and s-waves through the samples and measuring the wave velocities. The predictions of the theory for these velocities agree well with the results of the numerical model for a variety of damage patterns. We discuss the implications of our theory, as well as potential applications. RP TRENT, BC (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 8 TC 3 Z9 3 U1 0 U2 1 PU MCB UNIV PRESS LTD PI BRADFORD PA 60/62 TOLLER LANE, BRADFORD, W YORKSHIRE, ENGLAND BD8 9BY SN 0264-4401 J9 ENG COMPUTATION JI Eng. Comput. PD FEB PY 1995 VL 12 IS 2 BP 125 EP 134 DI 10.1108/02644409510799514 PG 10 WC Computer Science, Interdisciplinary Applications; Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications; Mechanics SC Computer Science; Engineering; Mathematics; Mechanics GA RK136 UT WOS:A1995RK13600003 ER PT J AU YEH, TCJ MASPLA, J MCCARTHY, JF WILLIAMS, TM AF YEH, TCJ MASPLA, J MCCARTHY, JF WILLIAMS, TM TI MODELING OF NATURAL ORGANIC-MATTER TRANSPORT PROCESSES IN GROUNDWATER SO ENVIRONMENTAL HEALTH PERSPECTIVES LA English DT Article; Proceedings Paper CT Joint US/Mexico Conference on Fate, Transport and Interactions of Metals CY APR 14-16, 1993 CL TUCSON, AZ DE NATURAL ORGANIC MATTER; SORPTION PROCESSES; TRACER TEST; HYDROLOGIC HETEROGENEITY; SPATIAL VARIABILITY; GROUNDWATER POLLUTION ID POROUS-MEDIA; SOLUTE AB A forced-gradient tracer test was conducted at the Georgetown site to study the transport of natural organic matter (NOM) in groundwater. In particular, the goal of this experiment was to investigate the interactions between NOM and the aquifer matrix. A detailed three-dimensional characterization of the hydrologic conductivity heterogeneity of the site was obtained using slug tests. The transport of a conservative tracer (chloride) was successfully reproduced using these conductivity data. Despite the good simulation of the flow field, NOM breakthrough curves could not be reproduced using a two-site sorption model with spatially constant parameters. Preliminary results suggest that different mechanisms for the adsorption/desorption processes, as well as their spatial variability, may significantly affect the transport and fate of NOM. C1 UNIV AUTONOMA BARCELONA,DEPT GEOL,UNITAT GEODINAM EXTERNA & HIDROGEOL,BARCELONA,SPAIN. OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. CLEMSON UNIV,BARUCH FOREST SCI INST,GEORGETOWN,SC. RP YEH, TCJ (reprint author), UNIV ARIZONA,DEPT HYDROL & WATER RESOURCES,TUCSON,AZ 85721, USA. OI Mas-Pla, Josep/0000-0002-8491-9895 NR 10 TC 0 Z9 0 U1 0 U2 3 PU NATL INST ENVIRON HEALTH SCI PI RES TRIANGLE PK PA PO BOX 12233, RES TRIANGLE PK, NC 27709 SN 0091-6765 J9 ENVIRON HEALTH PERSP JI Environ. Health Perspect. PD FEB PY 1995 VL 103 SU 1 BP 41 EP 46 PG 6 WC Environmental Sciences; Public, Environmental & Occupational Health; Toxicology SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Toxicology GA QP391 UT WOS:A1995QP39100011 ER PT J AU WALTON, BT ANDERSON, TA GUTHRIE, EA AF WALTON, BT ANDERSON, TA GUTHRIE, EA TI BIOREMEDIATION IN THE RHIZOSPHERE - REPLY SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Letter C1 IOWA STATE UNIV SCI & TECHNOL,AMES,IA 50011. UNIV N CAROLINA,CHAPEL HILL,NC 27599. RP WALTON, BT (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 6 TC 4 Z9 4 U1 2 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD FEB PY 1995 VL 29 IS 2 BP 552 EP 552 DI 10.1021/es00002a036 PG 1 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA QE089 UT WOS:A1995QE08900048 PM 22201406 ER PT J AU NAPOLITANO, GE RICHMOND, JE AF NAPOLITANO, GE RICHMOND, JE TI ENRICHMENT OF BIOGENIC LIPIDS, HYDROCARBONS AND PCBS IN STREAM-SURFACE FOAMS SO ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY LA English DT Article DE FOAM; LIPIDS; PCBS; STREAMS; SURFACE MICROLAYER ID PARTICULATE MATTER; MICROLAYERS; SEPARATION; TRANSPORT; METALS AB Water and foam samples from five streams in eastern Tennessee were analyzed for lipid content, lipid-class composition, and polychlorinated biphenyls (PCBs). Total lipid contents and lipid-class compositions varied substantially among streams and between the water and foam fractions within streams. However, lipid contents in foams were always greater than in the water from the same site (up to 100-fold). Major lipid classes in the water and foam samples were phospholipids, free fatty acids, and hydrocarbons; these lipid classes indicate the stream status with respect to viable microbial biomass, organic decay, and petroleum pollution, respectively. Concentrations of PCBs in stream-water and foam samples were also measured, and a laboratory experiment using stream water, reconstituted natural foam, and Aroclor 1254 was conducted to assess partition ratios of PCBs for water and foam. The results of the field and laboratory studies showed that the foam concentrated PCBs (relative to the parent waters) by factors of up to 10. The concentration of biogenic lipids and lipophilic pollutants in natural foams may influence the downstream transport of pollutants and affect their bioavailability to stream organisms. RP NAPOLITANO, GE (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831, USA. NR 18 TC 11 Z9 11 U1 0 U2 4 PU SETAC PRESS PI PENSACOLA PA 1010 NORTH 12TH AVE, PENSACOLA, FL 32501-3370 SN 0730-7268 J9 ENVIRON TOXICOL CHEM JI Environ. Toxicol. Chem. PD FEB PY 1995 VL 14 IS 2 BP 197 EP 201 DI 10.1897/1552-8618(1995)14[197:EOBLHA]2.0.CO;2 PG 5 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA QC879 UT WOS:A1995QC87900003 ER PT J AU BERG, EE HAMRICK, JL AF BERG, EE HAMRICK, JL TI FINE-SCALE GENETIC-STRUCTURE OF A TURKEY OAK FOREST SO EVOLUTION LA English DT Article DE ALLOZYME; F STATISTICS; GENE FLOW; GENETIC STRUCTURE; ISOLATION-BY-DISTANCE; NEIGHBORHOOD SIZE; NUMBER-OF-ALLELES-IN-COMMON; QUERCUS LAEVIS; RANDOMIZATION; SPATIAL AUTOCORRELATION ID AUTO-CORRELATION ANALYSIS; BY-DISTANCE MODEL; SPATIAL-AUTOCORRELATION; LIATRIS-CYLINDRACEA; PLANT-POPULATIONS; QUERCUS-LAEVIS; DIFFERENTIATION; PINE; GENOTYPES; BIOLOGY AB Theoretical models and computer simulations of the genetic structure of a continuous population predict the existence of patches of highly inbred individuals when gene how within the population is limited. A map of the three genotypes of a two-allele locus is expected to exhibit patches of homozygotes embedded in a matrix of heterozygotes, when gene flow is limited. A search for such patch structure was made on a 160 X 160 m plot within a continuous 60 + ha old-growth stand of Quercus laevis (turkey oak). Approximately 3400 trees were genotyped for 9 polymorphic loci using starch-gel electrophoresis, and the genetic structure was analyzed with spatial autocorrelation (both nominal and interval), hierarchical F statistics, and number-of-alleles-in-common. Adults (diameter at breast height > 0) and juveniles were analyzed separately but showed similar structure. While no distinct patch structure was found, a greater degree of relatedness was observed on a scale of 5 m-10 m than at greater distances, probably because of the limited acorn dispersal from maternal trees and a small amount of cloning by root sprouts. A computer simulation of a 10,000 tree forest breeding for 10,000 yr indicates that the effective neighborhood sizes (of randomly drawn seed- and pollen-donors) are both in excess of 440 individuals. The model thus cannot distinguish the observed data from panmictic mating. C1 UNIV GEORGIA,DEPT BOT,ATHENS,GA 30602. UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,ATHENS,GA 30602. UNIV GEORGIA,DEPT GENET,ATHENS,GA 30602. NR 46 TC 103 Z9 106 U1 0 U2 16 PU SOC STUDY EVOLUTION PI LAWRENCE PA 810 E 10TH STREET, LAWRENCE, KS 66044 SN 0014-3820 J9 EVOLUTION JI Evolution PD FEB PY 1995 VL 49 IS 1 BP 110 EP 120 DI 10.2307/2410297 PG 11 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA RH537 UT WOS:A1995RH53700010 ER PT J AU AIZENBERG, J HANSON, J ILAN, M LEISEROWITZ, L KOETZLE, TF ADDADI, L WEINER, S AF AIZENBERG, J HANSON, J ILAN, M LEISEROWITZ, L KOETZLE, TF ADDADI, L WEINER, S TI MORPHOGENESIS OF CALCITIC SPONGE SPICULES - A ROLE FOR SPECIALIZED PROTEINS INTERACTING WITH GROWING CRYSTALS SO FASEB JOURNAL LA English DT Article DE BIOMINERALIZATION; CALCISPONGES; X-RAY DIFFRACTION; CALCITE; CRYSTAL MORPHOLOGY ID MACROMOLECULES AB Crystals formed in biological tissues often adopt remarkable morphologies that are thought to be determined mainly by the shapes of the confined spaces in which they grow. Another possible way of controlling crystal shape, demonstrated only in vitro, is by means of specialized proteins preferentially interacting with certain crystal faces. In so doing, they reduce the rate of growth in these directions and consequently change the overall crystal shape. In an X-ray diffraction study of the distribution of defects within the lattice of calcite crystals produced by certain sponges, we show that a remarkable correlation exists between the defect patterns or crystal texture and the macroscopic morphology of the spicules. This was observed in two cases in which proteins are present within the spicule crystal, but not in a third case where such intracrystalline proteins are absent. Furthermore, one of the spicules exhibited marked differences in texture even within families of structurally identical crystal planes, demonstrating that the organisms exert exquisite control over the microenvironment in which crystals grow. We conclude that highly controlled intercalation of specialized proteins inside the crystals is an additional means by which organisms control spicule growth. C1 WEIZMANN INST SCI,DEPT MAT & INTERFACES,REHOVOT,ISRAEL. TEL AVIV UNIV,DEPT ZOOL,TEL AVIV,ISRAEL. BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY. RP AIZENBERG, J (reprint author), WEIZMANN INST SCI,DEPT BIOL STRUCT,IL-76100 REHOVOT,ISRAEL. RI Hanson, jonathan/E-3517-2010 NR 20 TC 98 Z9 99 U1 0 U2 14 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD FEB PY 1995 VL 9 IS 2 BP 262 EP 268 PG 7 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QJ249 UT WOS:A1995QJ24900015 PM 7781928 ER PT J AU SCHILLING, LB AF SCHILLING, LB TI CHEMICALS FROM ALTERNATIVE FEEDSTOCKS IN THE UNITED-STATES SO FEMS MICROBIOLOGY REVIEWS LA English DT Article; Proceedings Paper CT International Congress on Beyond 2000 - Chemicals from Biotechnology: Ecological Challenge and Economic Restraints CY OCT 18-20, 1993 CL HANNOVER, GERMANY SP BIOTECHNICA DE PROCESS EVALUATION; BIOMASS FEEDSTOCKS; INDUSTRIAL CHEMICALS AB Growing industrial interest in products from renewable alternative feedstocks has resulted in the creation of more industry-led federal research and development programs. The basis of this interest is introduced, followed by an overview of the various federal programs that support basic through applied research relevant to chemical products from renewable resources, and evidence of the increased coordination efforts between programs. The majority of the paper outlines a new program within the U.S. Department of Energy, the Alternative Feedstocks Program, which specifically targets chemicals a from renewables which have the potential to become part of the next generation of high-volume chemical feedstocks for the manufacturing industries. The first product of the program, an iterative process technology decision analysis tool, is broadly presented using the first process development project: succinic acid from fermentable sugars. RP SCHILLING, LB (reprint author), US DOE,OFF IND TECHNOL,1000 INDEPENDENCE AVE SW,WASHINGTON,DC 20585, USA. NR 7 TC 20 Z9 21 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-6445 J9 FEMS MICROBIOL REV JI Fems Microbiol. Rev. PD FEB PY 1995 VL 16 IS 2-3 BP 101 EP 110 PG 10 WC Microbiology SC Microbiology GA QK574 UT WOS:A1995QK57400004 ER PT J AU DATTA, R TSAI, SP BONSIGNORE, P MOON, SH FRANK, JR AF DATTA, R TSAI, SP BONSIGNORE, P MOON, SH FRANK, JR TI TECHNOLOGICAL AND ECONOMIC-POTENTIAL OF POLY(LACTIC ACID) AND LACTIC-ACID DERIVATIVES SO FEMS MICROBIOLOGY REVIEWS LA English DT Article; Proceedings Paper CT International Congress on Beyond 2000 - Chemicals from Biotechnology: Ecological Challenge and Economic Restraints CY OCT 18-20, 1993 CL HANNOVER, GERMANY SP BIOTECHNICA DE LACTIC ACID; POLY(LACTIC ACID); TECHNOLOGICAL POTENTIAL; ECONOMIC POTENTIAL ID ELECTRODIALYSIS AB Lactic acid has been an intermediate-volume specialty chemical (world production similar to 40,000 tons/yr) used in a wide range of food processing and industrial applications. Lactic acid has the potential of becoming a very large volume, commodity-chemical intermediate produced from renewable carbohydrates for use as feedstocks for biodegradable polymers, oxygenated chemicals, plant growth regulators, environmentally friendly ''green'' solvents, and specialty chemical intermediates. The recent announcements of new development-scale plants for producing lactic acid and polymer intermediates by major U.S. companies, such as Cargill, Ecochem (DuPont/ConAgra), and Archer Daniels Midland, attest to this potential. In the past, efficient and economical technologies for the recovery and purification of lactic acid from crude fermentation broths and the conversion of lactic acid to the chemical or polymer intermediates had been the key technology impediments and main process cost centers. The development and deployment of novel separations technologies, such as electrodialysis (ED) with bipolar membranes, extractive distillations integrated with fermentation, and chemical conversion, can enable low-cost production with continuous processes in large-scale operations. The use of bipolar ED can virtually eliminate the salt or gypsum waste produced in the current lactic acid processes. Thus, the emerging technologies can use environmentally sound processes to produce environmentally useful products from lactic acid. The process economics of some of these processes and products can also be quite attractive. In this paper, the recent technical advances in lactic and polylactic acid processes are discussed. The economic potential and manufacturing cost estimates of several products and process options are presented. The technical accomplishments at Argonne National Laboratory (ANL) and the future directions of this program at ANL are discussed. RP DATTA, R (reprint author), ARGONNE NATL LAB,DIV ENERGY SYST,WASTE MGMT & BIOENGN SECT,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 38 TC 392 Z9 424 U1 8 U2 76 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-6445 J9 FEMS MICROBIOL REV JI Fems Microbiol. Rev. PD FEB PY 1995 VL 16 IS 2-3 BP 221 EP 231 PG 11 WC Microbiology SC Microbiology GA QK574 UT WOS:A1995QK57400012 ER PT J AU FUCIARELLI, AF SISK, EC THOMAS, RM MILLER, DL AF FUCIARELLI, AF SISK, EC THOMAS, RM MILLER, DL TI INDUCTION OF BASE DAMAGE IN DNA SOLUTIONS BY ULTRASONIC CAVITATION SO FREE RADICAL BIOLOGY AND MEDICINE LA English DT Article DE ULTRASOUND; FREE RADICALS; DNA DAMAGE; GAS CHROMATOGRAPHY MASS SPECTROMETRY ID CHROMATOGRAPHY MASS-SPECTROMETRY; CATALYTIC METAL-IONS; TUBE EXPOSURE SYSTEM; SINGLE-STRAND BREAKS; NUCLEIC-ACID BASES; HYDROGEN-PEROXIDE; MAMMALIAN-CELLS; ROTATING TUBE; FREE-RADICALS; DEOXYRIBONUCLEIC-ACID AB Ultrasound can damage macromolecules by the mechanical (shearing) and sonochemical (free radical generating) action of ultrasonic cavitation. Attributing macromolecular damage to either direct mechanical stress or to indirect mechanisms involving free radicals or other sonochemicals is a challenging problem. DNA damage induced by ultrasound was evaluated by measuring the formation of purine and pyrimidine products using combined gas chromatography-mass spectrometry with selected ion monitoring. Samples of DNA were prepared in 10 mmol dm(-3) phosphate buffered saline (pH 7.4) and saturated with a mixture of argon:oxygen (3:1). Continuous 2.17 MHz ultrasound exposures at 0.82 mPa spatial peak negative pressure amplitude were performed in a 60 rpm rotating tube exposure system. Hydrogen peroxide yields were measured after each exposure to quantify the cavitation activity and ranged up to 350 mu mol dm(-3) for 1-h exposures. Purine and pyrimidine products identified were those typically observed following exposure of DNA to hydroxyl radical-generating systems, such as ionizing radiation, hypoxanthine/xanthine oxidase, or hydrogen peroxide in the presence of transition metal ions. The yields of these products were directly correlated with cavitation activity as measured by residual hydrogen peroxide concentrations. The yields of DNA products increased in the following order: thymine glycol similar to cytosine glycol>8-oxoAde>FAPyAde similar to 5-HMU similar to 5,6-diOHCyt>FAPyGua. Unexpectedly, 8-oxoguanine did not exhibit a dose-dependent increase above background levels, and this observation is inconsistent with processes involving metal ion-dependent formation of hydroxyl radicals from hydrogen peroxide. In addition, the product yields were far too large to result from the residual hydrogen peroxide. Thus, ultrasonic cavitation appears to have a mode of action distinct from either ionizing radiation or formation of hydroxyl radicals via Fenton-like reaction with transition metals. RP FUCIARELLI, AF (reprint author), PACIFIC NW LAB, DEPT BIOL & CHEM P756, POB 999, RICHLAND, WA 99352 USA. FU NCI NIH HHS [CA42947] NR 50 TC 41 Z9 42 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0891-5849 J9 FREE RADICAL BIO MED JI Free Radic. Biol. Med. PD FEB PY 1995 VL 18 IS 2 BP 231 EP 238 DI 10.1016/0891-5849(94)00119-5 PG 8 WC Biochemistry & Molecular Biology; Endocrinology & Metabolism SC Biochemistry & Molecular Biology; Endocrinology & Metabolism GA QF074 UT WOS:A1995QF07400012 PM 7744306 ER PT J AU KODAVANTI, UP HATCH, GE STARCHER, B GIRI, SN WINSETT, D COSTA, DL AF KODAVANTI, UP HATCH, GE STARCHER, B GIRI, SN WINSETT, D COSTA, DL TI OZONE-INDUCED PULMONARY FUNCTIONAL, PATHOLOGICAL, AND BIOCHEMICAL-CHANGES IN NORMAL AND VITAMIN-C-DEFICIENT GUINEA-PIGS SO FUNDAMENTAL AND APPLIED TOXICOLOGY LA English DT Article ID ASCORBIC-ACID; NITROGEN-DIOXIDE; EXPOSURE; LUNG; COLLAGEN; RATS; ANTIOXIDANTS; PREVENTION; NUTRIENTS; RESPONSES AB Since Vitamin C (ascorbate, AH(2)) is an important airway antioxidant and is an essential component of tissue repair, and since acute (4 hr) O-3 toxicity is enhanced by AH(2) deficiency, we hypothesized that longer-term O-3 effects might also be increased. Female Hartley guinea pigs (260-330 g) were fed either an AH(2)-sufficient or an AH(2)-deficient diet 1 week prior to exposure, and were maintained on their respective diets during 1 week of continuous exposure to O-3 (0, 0.2, 0.4, and 0.8 ppm, 23 hr/day), and during 1 week postexposure recovery in clean air. The AH(2)-deficient diet caused lung AH(2) to drop to about 30% of control in I week, and to below 10% by the end of exposure and recovery. Body weight gains during exposure were decreased in the 0.8 ppm O-3 group, while the AH(2) deficiency began to affect body weights only during recovery. O-3 caused a concentration-dependent decrease in total lung capacity, vital capacity, carbon monoxide diffusing capacity, nitrogen washout, and static compliance, while increasing forced expiratory flow rates and residual or end-expiratory volume (suggestive of pulmonary gas-trapping). The lung/body weight ratio and fixed lung displacement volume were also increased in O-3-exposed animals. Lung pathology consisted of mononuclear cell and neutrophil infiltration, airway as well as alveolar epithelial cell hyperplasia, and general decrease in epithelial cell cytoplasm. Thickening of the interstitium and an apparent increase in collagen staining were seen at the terminal bronchiolar regions. Some of these effects were marginally exacerbated in AH(2)-deficient guinea pigs. One week postexposure to air reversed all O-3-induced abnormalities, irrespective of AH(2) deficiency. Whole lung hydroxyproline and desmosine were not changed at any time by either O-3 or AH(2) deficiency. Measurement of lung prolyl hydroxylase activity suggested that AH(2) deficiency as well as O-3 exposure may have increased the tissue levels of this enzyme. The lack of a significant increase in toxicity with the longer-term exposure scenario suggests that AH, has minimal influence on other compensatory mechanisms developed over time. (C) 1995 Society of Toxicology. C1 US EPA,HLTH EFFECTS RES LAB,PULM TOXICOL BRANCH,RES TRIANGLE PK,NC 27711. UNIV TEXAS,CTR HLTH,DEPT BIOCHEM,TYLER,TX 75710. LAWRENCE LIVERMORE NATL LAB,SCH VET MED,DEPT VET MOLEC BIOSCI,DAVIS,CA 95616. MANTECH ENVIRONM TECHNOL INC,RES TRIANGLE PK,NC 27709. RP KODAVANTI, UP (reprint author), UNIV N CAROLINA,CTR ENVIRONM MED & LUNG BIOL,CHAPEL HILL,NC 27599, USA. NR 51 TC 15 Z9 15 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0272-0590 J9 FUND APPL TOXICOL JI Fundam. Appl. Toxicol. PD FEB PY 1995 VL 24 IS 2 BP 154 EP 164 DI 10.1006/faat.1995.1019 PG 11 WC Toxicology SC Toxicology GA QH466 UT WOS:A1995QH46600002 PM 7737427 ER PT J AU YANG, XF QUIROS, CF AF YANG, XF QUIROS, CF TI CONSTRUCTION OF A GENETIC-LINKAGE MAP IN CELERY USING DNA-BASED MARKERS SO GENOME LA English DT Article DE APIUM GRAVEOLENS; RFLP; RAPD; LINKAGE MAP ID POLYMORPHISMS; INHERITANCE; OLERACEA; TOMATO AB A F-2 population of two celery cultivated types (Apium graveolens L. var. rapaceum and A. graveolens L. var. secalinum) was used to construct a linkage map consisting of 29 RFLP (restriction fragment length polymorphism), 100 RAPD (random amplified polymorphic DNA), four isozyme, one disease resistance, and one growth habit markers. The map contains 11 major groups and 9 small groups and has a total length of 803 cM with an average distance of 6.4 cM between two adjacent loci. Ten percent of the RAPDs segregated as codominant markers and their allelic homologies were tested by Southern hybridization. One-quarter of the dominant RAPDs were linked in repulsion phase, whereas the majority of them were linked to either codominant or dominant markers in coupling phase. About 10% of the markers showed significant segregation distortion. The detectable level of duplications in the celery genome was relatively low. C1 LAWRENCE LIVERMORE NATL LAB, DEPT VEGETABLE CROPS, DAVIS, CA 95616 USA. NR 24 TC 17 Z9 25 U1 0 U2 8 PU CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS PI OTTAWA PA 1200 MONTREAL ROAD, BUILDING M-55, OTTAWA, ON K1A 0R6, CANADA SN 0831-2796 J9 GENOME JI Genome PD FEB PY 1995 VL 38 IS 1 BP 36 EP 44 PG 9 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA QN560 UT WOS:A1995QN56000005 PM 18470150 ER PT J AU VANDEYNZE, AE DUBCOVSKY, J GILL, KS NELSON, JC SORRELLS, ME DVORAK, J GILL, BS LAGUDAH, ES MCCOUCH, SR APPELS, R AF VANDEYNZE, AE DUBCOVSKY, J GILL, KS NELSON, JC SORRELLS, ME DVORAK, J GILL, BS LAGUDAH, ES MCCOUCH, SR APPELS, R TI MOLECULAR-GENETIC MAPS FOR GROUP-1 CHROMOSOMES OF TRITICEAE SPECIES AND THEIR RELATION TO CHROMOSOMES IN RICE AND OAT SO GENOME LA English DT Article DE TRITICEAE; RFLP; CONSENSUS; COMPARATIVE ID BARLEY HORDEUM-VULGARE; HEXAPLOID WHEAT; PHYSICAL MAP; LINKAGE MAP; TETRAPLOID WHEAT; RFLP MAPS; D-GENOME; C-BANDS; RYE; LOCI AB Group 1 chromosomes of the Triticeae tribe have been studied extensively because many important genes have been assigned to them. In this paper, chromosome 1 linkage maps of Triticum aestivum, T. tauschii, and T. monococcum are compared with existing barley and rye maps to develop a consensus map for Triticeae species and thus facilitate the mapping of agronomic genes in this tribe. The consensus map that was developed consists of 14 agronomically important genes, 17 DNA markers that were derived from known-function clones, and 76 DNA markers derived from anonymous clones. There are 12 inconsistencies in the order of markers among seven wheat, four barley, and two rye maps. A comparison of the Triticeae group 1 chromosome consensus map with linkage maps of homoeologous chromosomes in rice indicates that the linkage maps for the long arm and the proximal portion of the short arm of group 1 chromosomes are conserved among these species. Similarly, gene order is conserved between Triticeae chromosome 1 and its homoeologous chromosome in oat. The location of the centromere in rice and oat chromosomes is estimated from its position in homoeologous group 1 chromosomes of Triticeae. C1 CORNELL UNIV,DEPT PLANT BREEDING & BIOMETRY,ITHACA,NY 14853. LAWRENCE LIVERMORE NATL LAB,DEPT AGRON & RANGE SCI,DAVIS,CA 95616. KANSAS STATE UNIV AGR & APPL SCI,DEPT PLANT PATHOL,MANHATTAN,KS 66506. CSIRO,DIV PLANT IND,CANBERRA,ACT 2601,AUSTRALIA. RI lagudah, evans/A-2007-2010; Dubcovsky, Jorge/A-4969-2008 OI Dubcovsky, Jorge/0000-0002-7571-4345 NR 57 TC 233 Z9 239 U1 1 U2 9 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0831-2796 J9 GENOME JI Genome PD FEB PY 1995 VL 38 IS 1 BP 45 EP 59 PG 15 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA QN560 UT WOS:A1995QN56000006 ER PT J AU SANTSCHI, PH GUO, LD BASKARAN, M TRUMBORE, S SOUTHON, J BIANCHI, TS HONEYMAN, B CIFUENTES, L AF SANTSCHI, PH GUO, LD BASKARAN, M TRUMBORE, S SOUTHON, J BIANCHI, TS HONEYMAN, B CIFUENTES, L TI ISOTOPIC EVIDENCE FOR THE CONTEMPORARY ORIGIN OF HIGH-MOLECULAR-WEIGHT ORGANIC-MATTER IN OCEANIC ENVIRONMENTS SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Letter ID CARBON; PHYTOPLANKTON; GEOCHEMISTRY; COLLOIDS; SEAWATER; ESTUARY; RATES; C-14 AB Previous work has suggested that apparent old C-14 ages for oceanic DOC are the result of mixing of different organic carbon fractions. This report provides direct evidence for a contemporary C-14 age of a high-molecular-weight (HMW) fraction of colloidal organic carbon (greater than or equal to 10 kD). Colloidal organic matter, COM(10) (from 10 kDaltons (kD) to 0.2 mu m), isolated from the upper water column of the Gulf of Mexico and the Middle Atlantic Bight (MAB) region, generally has a contemporary age (i.e., younger than a few decades), while COM(1) (from 1 kD to 0.2 mu m), is apparently old: 380-4500 y BP. Thus, HMW COM(10) (3-5% of DOC) from the upper water column is derived from living particulate organic matter (POM) and cycles rapidly, while a significant fraction of low-molecular-weight (less than or equal to 1 kD) DOM is likely more refractory, and cycles on much longer time scales. The presence of pigment biomarker compounds in COM(1) from the upper water column points to selected phytoplankton species as one of the sources of COM. Terrestrial carbon as another source of COM is suggested from the inverse correlation between Delta(14)C and delta(13)C values, as well as the increasing delta(13)C values with increasing salinity. Th-234-derived turnover times of COM(10) and COM(1) from both the Gulf of Mexico and MAB are consistently short, 1-20 and 3-30 days, respectively. These short residence times support the hypothesis that C-14 ages of colloidal fractions of DOC are the result of COM fractions being a mixture of several endmembers with fast and slow turnover rates. C1 UNIV CALIF IRVINE,DEPT EARTH SYST SCI,IRVINE,CA 92717. LAWRENCE LIVERMORE NATL LAB,CTR ACCELERATOR MASS SPECTROMETRY,DEPT PHYS,LIVERMORE,CA 94551. TULANE UNIV,DEPT ECOL EVOLUT & ORGANISMAL BIOL,NEW ORLEANS,LA 70118. COLORADO SCH MINES,DEPT ENVIRONM SCI & ENGN,GOLDEN,CO 80401. TEXAS A&M UNIV,DEPT OCEANOG,COLLEGE STN,TX 77843. RP SANTSCHI, PH (reprint author), TEXAS A&M UNIV,DEPT OCEANOG,GALVESTON,TX 77553, USA. RI Guo, Laodong/F-6045-2010; Santschi, Peter/D-5712-2012; Trumbore, Susan/B-1948-2013; OI Guo, Laodong/0000-0002-5010-1630; Baskaran, Mark/0000-0002-2218-4328 NR 36 TC 137 Z9 141 U1 3 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD FEB PY 1995 VL 59 IS 3 BP 625 EP 631 DI 10.1016/0016-7037(94)00378-Y PG 7 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QG558 UT WOS:A1995QG55800017 ER PT J AU WILLIAMS, LB FERRELL, RE HUTCHEON, I BAKEL, AJ WALSH, MM KROUSE, HR AF WILLIAMS, LB FERRELL, RE HUTCHEON, I BAKEL, AJ WALSH, MM KROUSE, HR TI NITROGEN ISOTOPE GEOCHEMISTRY OF ORGANIC-MATTER AND MINERALS DURING DIAGENESIS AND HYDROCARBON MIGRATION SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID CRUDE OILS; BURIAL DIAGENESIS; FIXED-AMMONIUM; CLAY-MINERALS; SOURCE ROCKS; WILCOX-GROUP; SEDIMENTS; GULF; FRACTIONATION; LOUISIANA AB The magnitude of isotopic variations between organic and inorganic nitrogen was examined in samples from three stacked hydrocarbon reservoirs in the Fordoche Field (Louisiana Gulf Coast Basin, USA). Measurements were made of delta(15)N in kerogen, bitumen, oil, formation water, and fixed-NH4 extracted from mudstones, nonproductive sandstones, and productive sandstones. Nitrogen isotope fractionation occurs because N-14 is released preferentially to N-15 from organic molecules during thermal maturation. Released N-14 goes into solution, or may be adsorbed by minerals, leaving crude oil enriched in N-15. Diagenetic clay minerals (e.g., illite) commonly form in the temperature range of hydrocarbon generation, and NH: may be fixed in clay interlayers with an isotopic ratio similar to that of the migrating fluids. Results indicate that the influence of organic matter on mineral delta(15)N depends on the timing of authigenic mineral formation relative to fluid migration. The average delta(15)N of kerogen (3.2 +/- 0.3 parts per thousand) and fixed-NH, from mudstones (3.0 +/- 1.4) is similar, while bitumen increases from +3.5 to +5.1 parts per thousand with depth. In deep reservoir sandstones (> 100 degrees C), the delta N-15 Of crude oil averages +5.2 +/- 0.4 parts per thousand, similar to the delta N-15 Of bitumen in the proposed source rocks. Formation waters are N-14-enriched with an average delta(15)N Of -2.2 +/- 2.6 parts per thousand. Fixed-NH4 delta(15)N values lie between that of the oil and water. The average delta N-15 of fixed-NH4 is 3.0 +/- 1.2 parts per thousand in productive sandstones, and 0.2 +/- 2.4 parts per thousand in nonproductive sandstones. In the shallower reservoir sandstones (<90 degrees C) fixed-NH4 is apparently not influenced by the presently associated fluids. Productive and nonproductive sandstones have distinctly low average delta(15)N values (-1.2 +/- 0.8 parts per thousand), yet crude oil (+11.1 +/- 0.3 parts per thousand) and water (+3.8 +/- 0.1 parts per thousand) have been N-15-enriched by similar to 6 parts per thousand relative to the deeper reservoirs. This suggests that the present fluids migrated into the reservoir after authigenic illite had formed. Fluids become enriched in N-15 during migration and the amount of enrichment may be a function of the amount of interaction with argillaceous sediments. C1 LOUISIANA STATE UNIV,DEPT GEOL & GEOPHYS,BATON ROUGE,LA 70803. UNIV CALGARY,DEPT GEOL & GEOPHYS,CALGARY,AB T2N 1N4,CANADA. ARGONNE NATL LAB,ARGONNE,IL 60439. LOUISIANA STATE UNIV,INST ENVIRONM STUDIES,BATON ROUGE,LA 70803. UNIV CALGARY,DEPT PHYS & ASTRON,CALGARY,AB T2N 1N4,CANADA. RP WILLIAMS, LB (reprint author), ARIZONA STATE UNIV,DEPT GEOL,TEMPE,AZ 85287, USA. NR 91 TC 70 Z9 78 U1 2 U2 17 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD FEB PY 1995 VL 59 IS 4 BP 765 EP 779 DI 10.1016/0016-7037(95)00005-K PG 15 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QH991 UT WOS:A1995QH99100011 ER PT J AU ENGLERT, PAJ SARAFIN, R MASARIK, J REEDY, RC AF ENGLERT, PAJ SARAFIN, R MASARIK, J REEDY, RC TI COSMOGENIC MN-53 IN THE MAIN FRAGMENT OF THE NORTON COUNTY AUBRITE SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID COSMIC-RAY EXPOSURE; PRODUCTION-RATES; METEORITES; CHONDRITES; METEOROIDS; AGES AB Cosmoaenic Mn-53 was determined for the first time in an aubrite, a very Fe-poor achondrite. Six samples of the main fragment of Norton County were selected near locations where preatmospheric depths of 11-21 cm had been determined from cosmic ray tracks. The measured Mn-53 activities ranged from 414 to 552 dpm/kg-Fe and increased rapidly with depth. Production rates of Mn-53 calculated with the LAHET Code System agree with the measured activities and show that the radius of Norton County (65 cm) was near that for maximum production rates. No special irradiation conditions are needed to explain cosmogenic nuclides in Norton County. C1 UNIV COLOGNE,DEPT NUCL CHEM,W-5000 COLOGNE 1,GERMANY. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP ENGLERT, PAJ (reprint author), SAN JOSE STATE UNIV,DEPT NUCL SCI,SAN JOSE,CA 95192, USA. OI Reedy, Robert/0000-0002-2189-1303 NR 28 TC 7 Z9 7 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD FEB PY 1995 VL 59 IS 4 BP 825 EP 830 DI 10.1016/0016-7037(95)00001-G PG 6 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QH991 UT WOS:A1995QH99100015 ER PT J AU HIRSCH, CH AF HIRSCH, CH TI WHEN YOUR PATIENT NEEDS SURGERY - HOW PLANNING CAN AVOID COMPLICATIONS SO GERIATRICS LA English DT Article ID OLDER PATIENTS; DEPRESSION; NUTRITION AB Delirium, depression, malnutrition, and functional decline represent potentially serious complications of surgery that are more likely to occur in older patients. Preoperative functional, cognitive, and nutritional screening of older surgical candidates cart identify those at increased risk for these complications, allowing aggressive perioperative management to prevent or mitigate their occurrence. A frank appraisal before surgery of the potential caregivers, home environment, and available community resources allows the physician to determine the probable discharge destination. Knowledge of the level of medical and functional status that must be attained before the patient can be discharged to a selected destination should guide the perioperative treatment plan and may prevent premature discharge. RP HIRSCH, CH (reprint author), UNIV CALIF DAVIES MED CTR, DEPT MED, SACRAMENTO, CA USA. NR 17 TC 10 Z9 11 U1 1 U2 1 PU ADVANSTAR COMMUNICATIONS INC PI DULUTH PA 131 W 1ST STREET, DULUTH, MN 55802 USA SN 0016-867X EI 1936-5764 J9 GERIATRICS JI Geriatrics PD FEB PY 1995 VL 50 IS 2 BP 39 EP 44 PG 6 WC Geriatrics & Gerontology SC Geriatrics & Gerontology GA QF598 UT WOS:A1995QF59800007 PM 7835724 ER PT J AU CAMPBELL, JH WALLERSTEIN, EP TORATANI, H MEISSNER, HE NAKAJIMA, S IZUMITANI, TS AF CAMPBELL, JH WALLERSTEIN, EP TORATANI, H MEISSNER, HE NAKAJIMA, S IZUMITANI, TS TI EFFECTS OF PROCESS GAS ENVIRONMENT ON PLATINUM-INCLUSION DENSITY AND DISSOLUTION RATE IN PHOSPHATE LASER GLASSES SO GLASTECHNISCHE BERICHTE-GLASS SCIENCE AND TECHNOLOGY LA English DT Article AB The effects of process gas environment on reducing the density of platinum inclusions in phosphate laser glasses are examined. The platinum inclusions originate from the crucibles used to melt the laser glass and can lead to optical damage in glasses used in high-peak-power lasers. The melting experiments examine the effects of N-2 O-2 and Cl-2 gases on inclusion density and platinum dissolution rates. The more oxidizing the process gas conditions, the greater the dissolution rate (O-2 + Cl-2 > O-2 much greater than N-2). A thin-film mass transport model is used to analyze dissolution rate data for small plates of platinum over a range of temperatures from 1000 to 1200 degrees C and oxygen fugacity of 10(-3) to 1 bar. At 1200 degrees C the platinum dissolution rate is approximately 3.0.10(-8) (P-O2)(0.7)(in g/cm(2).s)) where P-O2 is the oxygen fugacity of the process gas in bar. Using Cl-2 rather than O-2 causes a measurable increase in the optical absorption of the glass that may be due to either a red-shift and/or a greater absorption coefficient for the platinum-chlorine complex. RP CAMPBELL, JH (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA, USA. NR 13 TC 8 Z9 8 U1 0 U2 1 PU DEUTSCHEN GLASTECHNISCHEN GES PI FRANKFURT 1 PA MENDELSSOHNSTR 75-77, W-6000 FRANKFURT 1, GERMANY SN 0946-7475 J9 GLASTECH BER-GLASS JI Glastech. Ber.-Glass Sci. Technol. PD FEB PY 1995 VL 68 IS 2 BP 59 EP 69 PG 11 WC Materials Science, Ceramics SC Materials Science GA QQ568 UT WOS:A1995QQ56800003 ER PT J AU LIU, JC NELSON, WR KASE, KR AF LIU, JC NELSON, WR KASE, KR TI GAS BREMSSTRAHLUNG AND ASSOCIATED PHOTON-NEUTRON SHIELDING CALCULATIONS FOR ELECTRON STORAGE-RINGS SO HEALTH PHYSICS LA English DT Article DE PHANTOM; DOSE; BREMSSTRAHLUNG; NEUTRONS AB The EGS4 electron-photon Monte Carlo code has been used to study the characteristics of the bremsstrahlung X rays generated from the interaction of circulating electrons with the residual gas in accelerator storage rings. Gas bremsstrahlung dose rates are given for various opening angles as a function of the electron beam energy ranging from 0.5-10 GeV. Photon and neutron dose rates, generated from various devices struck by gas bremsstrahlung in a synchrotron radiation beamline, are also presented along with the photon spectral and transmission results. The EGS4-predicted results are found to be in basic agreement with the measurements made at the Stanford Synchrotron Radiation Laboratory. Figures, equations, and a simple method useful for the photon-neutron shielding design for beamlines are provided. RP LIU, JC (reprint author), STANFORD LINEAR ACCELERATOR CTR, MS 48, POB 4349, STANFORD, CA 94309 USA. NR 14 TC 12 Z9 12 U1 0 U2 1 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD FEB PY 1995 VL 68 IS 2 BP 205 EP 213 DI 10.1097/00004032-199502000-00006 PG 9 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA QC480 UT WOS:A1995QC48000006 PM 7814254 ER PT J AU JARVIS, TT AF JARVIS, TT TI CHEMWINDOW, VERSION-3 SO HEALTH PHYSICS LA English DT Software Review RP JARVIS, TT (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD FEB PY 1995 VL 68 IS 2 BP 270 EP 270 PG 1 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA QC480 UT WOS:A1995QC48000013 ER PT J AU STRADLING, GN GRAY, SA PEARCE, MJ WILSON, I MOODY, JC BURGADA, R DURBIN, PW RAYMOND, KN AF STRADLING, GN GRAY, SA PEARCE, MJ WILSON, I MOODY, JC BURGADA, R DURBIN, PW RAYMOND, KN TI DECORPORATION OF TH-228 FROM THE RAT BY 3,4,3-LIHOPO AND DTPA AFTER SIMULATED WOUND CONTAMINATION SO HUMAN & EXPERIMENTAL TOXICOLOGY LA English DT Article DE WOUNDS; TH-228 NITRATE; RAT; 3,4,3-LIHOPO; DTPA ID PLUTONIUM AB 1 With DTPA as a comparison, the siderophore analogue 3,4,3-LIHOPO has been examined for its ability to remove Th-228 nitrate from the rat after subcutaneous (sc) and intramuscular (im) injection to simulate wound contamination. The commencement of treatment was delayed 30 min, 6 h or 1 d and the animals killed at 7 d. 2 In all cases 3,4,3-LIHOPO was appreciably more effective than DTPA although the efficacy of treatment and the relative effectiveness of the ligands decreased rapidly with their delay in administration. 3 Optimum removal with bath ligands occurred when initial local administration at 30 min after exposure was followed by repeated intraperitoneal injection at 6 h, 1, 2 and 3 d. Under these conditions the body content of Th-228 was reduced to 20% of controls after sc injection and 15% after im injection. The corresponding values using repeated DTPA administration were 80% and 54%. 4 It is concluded that 3,4,3-LIHOPO represents, potentially, a considerable advance on DTPA, the current agent of choice for the treatment of wounds contaminated by Th-228. C1 UNIV PARIS 06,CHIM ORGANOELEMENTS LAB,F-75252 PARIS,FRANCE. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP STRADLING, GN (reprint author), NATL RADIOL PROTECT BOARD,DIDCOT OX11 0RQ,OXON,ENGLAND. NR 18 TC 18 Z9 18 U1 1 U2 2 PU STOCKTON PRESS PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE, HANTS, ENGLAND RG21 2XS SN 0144-5952 J9 HUM EXP TOXICOL JI Hum. Exp. Toxicol. PD FEB PY 1995 VL 14 IS 2 BP 165 EP 169 PG 5 WC Toxicology SC Toxicology GA QL519 UT WOS:A1995QL51900002 PM 7779440 ER PT J AU SKIDMORE, JA EMANUEL, MA BEACH, RJ BENETT, WJ FREITAS, BL CARLSON, NW SOLARZ, RW BOUR, DP TREAT, DW AF SKIDMORE, JA EMANUEL, MA BEACH, RJ BENETT, WJ FREITAS, BL CARLSON, NW SOLARZ, RW BOUR, DP TREAT, DW TI HIGH-POWER CW OPERATION OF ALGAINP LASER-DIODE ARRAY OF 640 NM SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article AB Visible-emitting high-power laser bars are investigated at an emission wavelength of 640 nm. AlGaInP/GaInP, single tensile-strained quantum well, separate confinement heterostructures are fabricated into one cm long laser bars using a 0.7 fill factor. The low threshold current of the diode, combined with the aggressive heatsinking of a silicon microchannel cooler has resulted in more than 12 W of continuous wave output power. C1 XEROX CORP,PALO ALTO RES CTR,PALO ALTO,CA 94304. RP SKIDMORE, JA (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 9 TC 7 Z9 7 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD FEB PY 1995 VL 7 IS 2 BP 133 EP 135 DI 10.1109/68.345900 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA QG412 UT WOS:A1995QG41200001 ER PT J AU WARREN, S POPE, K YAZDI, Y WELCH, AJ THOMSEN, S JOHNSTON, AL DAVIS, MJ RICHARDSKORTUM, R AF WARREN, S POPE, K YAZDI, Y WELCH, AJ THOMSEN, S JOHNSTON, AL DAVIS, MJ RICHARDSKORTUM, R TI COMBINED ULTRASOUND AND FLUORESCENCE SPECTROSCOPY FOR PHYSICOCHEMICAL IMAGING OF ATHEROSCLEROSIS SO IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING LA English DT Article ID LASER-INDUCED FLUORESCENCE; CORONARY ANGIOPLASTY; INTRAVASCULAR ULTRASOUND; DIAGNOSIS; AUTOFLUORESCENCE; RESTENOSIS; CATHETER; ARTERIES; MODEL AB This paper describes a combined ultrasonic and spectroscopic system for remotely obtaining physico-chemical images of normal arterial tissue and atherosclerotic plaque. Despite variations in detector-tissue separation, R, fluorescence powers corresponding to pixels in the image are converted to the same set of calibrated units using distance estimations from A-mode ultrasound reflection times. An empirical model, validated by Monte Carlo simulations of light propagation in tissue, is used to describe changes in fluorescence power as a function of R. Fluorescence spectra of normal and atherosclerotic human aorta obtained with this system are presented as a function of R. To compensate for changes in fluorescence power with R, the empirical model was used in each case to calculate the fluorescence power at a constant reference value of R (R(ref) = 1.67 mm). Prior to compensation, tissue fluorescence power decreased more than a factor of two as R was increased from 2.5 to 5 mm. Following compensation, the fluorescence power varied less than f 10% of the average compensated peak. The chemical composition of each sample was determined by fitting its fluorescence spectrum (in calibrated units) to a model of tissue fluorescence incorporating structural protein and ceroid fluorescence, as well as structural protein and hemoglobin attenuation. Parameters of the fit were used to classify tissue type. Without compensation for distance variation, classification of tissue type was frequently incorrect; however, with compensation, predictive value was high. A 1-D chemical image of a section of human aorta containing both normal and atherosclerotic regions obtained with this system is also presented. After compensation for detector-sample separation, tissue classifications along the cross-section closely resemble those obtained from histology. Regions of elevated ceroid concentration and intimal-thickening are clearly observable in the resultant Chemical image. The potential value of this type of system in the diagnosis and treatment of coronary artery disease is discussed. C1 UNIV TEXAS,MED BRANCH,JENNIE SEALY HOSP,SEALY & SMITH LAB MED ULTRASON,DIV CARDIOL,GALVESTON,TX 77555. UNIV TEXAS,BIOMED ENGN PROGRAM,AUSTIN,TX 78712. UNIV TEXAS,MD ANDERSON CANC CTR,LASER BIOL RES PROGRAM,LASER BIOL RES LAB 17,HOUSTON,TX 77030. RP WARREN, S (reprint author), SANDIA NATL LABS,CTR ELECTR SUBSYST,TECH STAFF,POB 5800,ALBUQUERQUE,NM 87185, USA. RI Richards-Kortum, Rebecca/P-4074-2014 OI Richards-Kortum, Rebecca/0000-0003-2347-9467 NR 26 TC 25 Z9 25 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9294 J9 IEEE T BIO-MED ENG JI IEEE Trans. biomed. Eng. PD FEB PY 1995 VL 42 IS 2 BP 121 EP 132 DI 10.1109/10.341824 PG 12 WC Engineering, Biomedical SC Engineering GA QE133 UT WOS:A1995QE13300001 PM 7868139 ER PT J AU BRADLEY, JN STOCKHAM, TG MATHEWS, VJ AF BRADLEY, JN STOCKHAM, TG MATHEWS, VJ TI AN OPTIMAL-DESIGN PROCEDURE FOR INTRABAND VECTOR QUANTIZED SUBBAND CODING SO IEEE TRANSACTIONS ON COMMUNICATIONS LA English DT Article ID IMAGES AB Subband coding with vector quantization is addressed in this paper. Forming the data vectors from both between and within the subbands is considered. The former of these two schemes is referred to as interband coding and the latter as intraband coding. Interband coder design is relatively straightforward since the design of the single codebook involved follows readily from a representative set of interband data vectors. Intraband coder design is more complicated since it entails the selection of a vector dimension and a bit-rate for each subband. The main contribution of this work is an optimal methodology for intraband subband vector quantizer design. The problem formulation includes constraints on the bit-rate and the encoding complexity and is solved with nonlinear programming methods. Subband vector quantization image coding in conjunction with a human visual system model is thoroughly investigated. Results of a large number of experiments indicate that the optimal intraband coder yields superior results from quantitative as well as' subjective points of view than the interband coder for comparable bit-rates. This improvement becomes more pronounced as the computational complexity of the intraband encoder is allowed to increase. C1 UNIV UTAH, DEPT ELECT ENGN, SALT LAKE CITY, UT 84112 USA. RP LOS ALAMOS NATL LAB, COMP RES & APPLICAT GRP, MS B-265, LOS ALAMOS, NM 87545 USA. NR 34 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0090-6778 EI 1558-0857 J9 IEEE T COMMUN JI IEEE Trans. Commun. PD FEB-APR PY 1995 VL 43 IS 2-4 BP 523 EP 533 DI 10.1109/26.380071 PN 1 PG 11 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA QV154 UT WOS:A1995QV15400048 ER PT J AU KESLING, WD HUNT, CE AF KESLING, WD HUNT, CE TI BEAM FOCUSING FOR FIELD-EMISSION FLAT-PANEL DISPLAYS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article ID SIMULATION AB A combination of finite element and finite difference techniques have been used to simulate the performance of microfabricated gated field emitters for Bat-panel display applications. The computer model has been verified against both analytic models and experimental data for unfocused devices and then applied to the study of focused structures for which sufficient models and data are not yet available. Quantitative results include electrode current-voltage characteristics and electron beam widths as a function of distance from the cathode. Practical issues such as visual image quality, electrical stress and fabrication complexity are considered to identify a practical design for use in conjunction with existing high-efficiency cathode ray tube phosphors. It is found that the addition of an integrated aperture electrode to focus the emitted electrons increases the cathode-gate drive voltage by about 30% over the case of unfocused emitters. A concentric electrode design results in only 15% increase and promises simpler fabrication. Both approaches demonstrate electron beam, widths of tens of microns at anode distances of several millimeters, allowing for full-color resolution in excess of 100 lines per inch with proven color phosphors. C1 LAWRENCE LIVERMORE NATL LAB,DIV ENGN RES,LIVERMORE,CA 94550. RP KESLING, WD (reprint author), UNIV CALIF DAVIS,DEPT ELECT & COMP ENGN,DAVIS,CA 95616, USA. NR 14 TC 38 Z9 40 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD FEB PY 1995 VL 42 IS 2 BP 340 EP 347 DI 10.1109/16.370059 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA QD768 UT WOS:A1995QD76800021 ER PT J AU PINOTTI, E LONGONI, A GAMBELLI, M STRUDER, L LECHNER, P VANZANTHIER, C KRANER, H AF PINOTTI, E LONGONI, A GAMBELLI, M STRUDER, L LECHNER, P VANZANTHIER, C KRANER, H TI ROOM-TEMPERATURE, HIGH-RESOLUTION X-RAY SPECTROSCOPY WITH SILICON DRIFT CHAMBERS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID DETECTORS AB The development of detectors for high resolution room temperature X-ray spectroscopy represents a relevant progress in many fields of application, mainly in out-of-laboratory environments. A new type of silicon detector, the Semiconductor Drift Chamber (SDC), allows one to obtain at room temperature, or with a moderate cooling, a resolution comparable to that obtained at liquid nitrogen temperature with traditional detectors of the same active area. The key feature of the SDC's is the very low output capacitance (about 100 fF) independent of the active area of the device. This feature, together with a good capacitive matching between the detector and the first stage of amplification, leads to high values of the resolution at short shaping times. We tested a simple 6-mm2 cylindrical SDC at room temperature and at -20-degrees-C (easily obtainable with electrical cooling), by using a specifically designed, low capacitance, JFET as the input transistor of the preamplifier. With a Fe-55 source, we measured an Equivalent Noise Charge (ENC) of 34 e- rms and 27 e- rms at room temperature and at -20-degrees-C respectively. To our knowledge these are presently the best values obtained for the same active area near room temperature. C1 DIPARTIMENTO ELETTRON & INFORMAZ,I-20133 MILAN,ITALY. MAX PLANCK INST PHYS & EXTRATERRESTR PHYS,MPI HALBLEITERLABOR,D-81245 MUNICH,GERMANY. BROOKHAVEN NATL LAB,UPTON,NY 11973. RP PINOTTI, E (reprint author), POLITECN MILAN,DIPARTIMENTO FIS,PIAZZA LEONARDO VINCI 32,I-20133 MILAN,ITALY. NR 11 TC 16 Z9 17 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD FEB PY 1995 VL 42 IS 1 BP 12 EP 16 DI 10.1109/23.364875 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA QH110 UT WOS:A1995QH11000003 ER PT J AU MALLADI, R SETHIAN, JA VEMURI, BC AF MALLADI, R SETHIAN, JA VEMURI, BC TI SHAPE MODELING WITH FRONT PROPAGATION - A LEVEL SET APPROACH SO IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE LA English DT Article DE SHAPE MODELING; SHAPE RECOVERY; INTERFACE MOTION; LEVEL SETS; HYPERBOLIC CONSERVATION LAWS; HAMILTON-JACOBI EQUATION; ENTROPY CONDITION ID SURFACE RECONSTRUCTION; INTRINSIC PARAMETERS; CURVATURE; ALGORITHMS; MOTION AB Shape modeling is an important constituent of computer vision as well as computer graphics research. Shape models aid the tasks of object representation and recognition. This paper presents a new approach to shape modeling which retains some of the attractive features of existing methods and overcomes some of their limitations. Our techniques can be applied to model arbitrarily complex shapes, which include shapes with significant protrusions, and to situations where no a priori assumption about the object's topology is made. A single instance of our model, when presented with an image having more than one object of interest, has the ability to split freely to represent each object. This method is based on the ideas developed by Osher and Sethian to model propagating solid/liquid interfaces with curvature dependent speeds. The interface (front) is a closed, nonintersecting, hypersurface flowing along its gradient field with constant speed or a speed that depends on the curvature, It is moved by solving a ''Hamilton-Jacobi'' type equation written for a function in which the interface is a particular level set. A speed term synthesized from the image is used to stop the interface in the vicinity-of object boundaries. The resulting equation of motion is solved by employing entropy-satisfying upwind finite difference schemes. We present a variety of ways of computing evolving front, including narrow bands, reinitializations, and different stopping criteria. The efficacy of the scheme is demonstrated with numerical experiments on some synthesized images and some low contrast medical images. C1 UNIV CALIF BERKELEY,DEPT MATH,BERKELEY,CA 94720. UNIV FLORIDA,DEPT COMP & INFORMAT SCI,GAINESVILLE,FL 32611. RP MALLADI, R (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 38 TC 1822 Z9 2030 U1 7 U2 120 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0162-8828 J9 IEEE T PATTERN ANAL JI IEEE Trans. Pattern Anal. Mach. Intell. PD FEB PY 1995 VL 17 IS 2 BP 158 EP 175 DI 10.1109/34.368173 PG 18 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA QE825 UT WOS:A1995QE82500005 ER PT J AU WOOD, BP LIEBERMAN, MA LICHTENBERG, AJ AF WOOD, BP LIEBERMAN, MA LICHTENBERG, AJ TI STOCHASTIC ELECTRON HEATING IN A CAPACITIVE RF DISCHARGE WITH NON-MAXWELLIAN AND TIME-VARYING DISTRIBUTIONS SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Article ID MONTE-CARLO COLLISIONS; PARTICLE-IN-CELL; GLOW-DISCHARGES; PLASMAS; PROBE; SHEATH; ENERGY; MODEL; ARGON; SIMULATIONS AB In capacitively coupled radio frequency discharges, the electrons gain and lose energy by reflection from oscillating, high voltage sheaths. When time-averaged, this results in stochastic heating, which at low pressure is responsible for most of the electron heating in these discharges. Previous derivations of stochastic heating rates have generally assumed that the electron distribution is a time-invariant, single-temperature Maxwellian, and that the sheath motion is slow compared to the average electron velocity, so that electrons gain or lose a small amount of energy in each sheath reflection. Here we solve for the stochastic heating rates in the opposite limit of fast sheath motion and consider the applicability of the slow and fast sheath equations in the intermediate region. We also consider the effect of a two-temperature Maxwellian distribution on particle balance and the effect of a time-varying temperature on the heating rates and densities. C1 UNIV CALIF BERKELEY,DEPT ELECT ENGN & COMP SCI,BERKELEY,CA 94720. RP WOOD, BP (reprint author), LOS ALAMOS NATL LAB,DIV PHYS,LOS ALAMOS,NM 87545, USA. NR 27 TC 29 Z9 29 U1 1 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0093-3813 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD FEB PY 1995 VL 23 IS 1 BP 89 EP 96 DI 10.1109/27.376565 PG 8 WC Physics, Fluids & Plasmas SC Physics GA QQ991 UT WOS:A1995QQ99100010 ER PT J AU BALDICK, R KAHN, E AF BALDICK, R KAHN, E TI A LINEAR-MODEL OF VOLTAGE LIMITED TRANSMISSION INTERFACE CONSTRAINTS SO IEEE TRANSACTIONS ON POWER SYSTEMS LA English DT Article; Proceedings Paper CT IEEE-Power-Engineering-Education-Committee of the IEEE-Power-Engineering-Society, at the IEEE/PES 1994 Summer Meeting CY JUL 24-28, 1994 CL SAN FRANCISCO, CA SP IEEE POWER ENGN SOC, POWER ENGN EDUC COMM DE TRANSMISSION; INTERFACE CONSTRAINTS; VOLTAGE LIMITS ID SYSTEM AB A linear model of voltage limited transmission interface constraints is developed. The solution is a trade-off among local generation, transmission expansion, and reactive support equipment. With specified reliability criteria, network sensitivity parameters are calculated for a model system. The sensitivity of the optimal choice to economic factors is illustrated. This model illustrates in a simple case the choices facing planners, clarifies the practical conditions that dictate the optimum in particular cases, and helps to motivate the final choices selected. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,UTIL POLICY & PLANNING GRP,BERKELEY,CA 94720. RP BALDICK, R (reprint author), UNIV TEXAS,DEPT ELECT & COMP ENGN,AUSTIN,TX 78712, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0885-8950 J9 IEEE T POWER SYST JI IEEE Trans. Power Syst. PD FEB PY 1995 VL 10 IS 1 BP 476 EP 482 DI 10.1109/59.373973 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA QK236 UT WOS:A1995QK23600058 ER PT J AU WALTER, E PRONZATO, L SOONG, Y OTAROD, M HAPPEL, J AF WALTER, E PRONZATO, L SOONG, Y OTAROD, M HAPPEL, J TI MODELING TRANSIENT TRACING IN PLUG-FLOW REACTORS - A CASE-STUDY SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH LA English DT Article ID FISCHER-TROPSCH SYNTHESIS; CO HYDROGENATION; ISOTOPIC TRACER; NICKEL-CATALYST; METHANATION; RU/TIO2; NI/AL2O3 AB For heterogeneous catalysis, ordinary differential equations in time can be used to interpret transient tracer data obtained in a continuous stirred tank reactor or gradientless reactor in which a steady-state reaction is occurring. The same procedure is often used for plug-flow reactor modeling. However, for transient tracing data obtained with a plug-flow reactor operating under differential conversion, it is necessary to use a set of partial differential equations involving distance through the reactor as well as time. In this paper, we present a case study of methanation on a nickel catalyst to illustrate the modeling procedure needed to estimate the desired parameters. C1 ECOLE SUPER ELECT,CNRS,SIGNAUX & SYST LAB,F-91192 GIF SUR YVETTE,FRANCE. INFORMAT SIGNAUX & SYST LAB,CNRS,URA 1376,F-06560 VALBONNE,FRANCE. PITTSBURGH ENERGY TECHNOL CTR,DEPT ENERGY,PITTSBURGH,PA 15236. UNIV SCRANTON,DEPT MATH,SCRANTON,PA 18510. COLUMBIA UNIV,DEPT CHEM ENGN MAT SCI & MIN,NEW YORK,NY 10027. NR 21 TC 10 Z9 10 U1 1 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0888-5885 J9 IND ENG CHEM RES JI Ind. Eng. Chem. Res. PD FEB PY 1995 VL 34 IS 2 BP 483 EP 487 DI 10.1021/ie00041a008 PG 5 WC Engineering, Chemical SC Engineering GA QF748 UT WOS:A1995QF74800008 ER PT J AU SIRIWARDANE, RV WOODRUFF, S AF SIRIWARDANE, RV WOODRUFF, S TI FTIR CHARACTERIZATION OF THE INTERACTION OF OXYGEN WITH ZINC-SULFIDE SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH LA English DT Note ID SO2; DIOXIDE AB Interaction of ZnS with oxygen at 823, 873, and 923 K was studied using Fourier transform infrared spectroscopy (FTIR). The reaction of ZnS with oxygen was found to be pressure dependent. At 823 K the reaction products during oxygen exposures of 5 x 10(-3)-4 x 10(-2) Torr were adsorbed sulfur dioxide and sulfite, while at oxygen pressures greater than 4 x 10(-2) Torr sulfate was the most prominent species. At 873 K, adsorbed SO2 and sulfite were the only species formed below 4 x 10(-2) Torr of oxygen but sulfate started to form at 4 x 10(-2) Torr. However, at 873 K adsorbed SO2 was the most prominent species observed for all oxygen pressures. The reaction profile at 923 K was similar to that at 873 K, but there were more types of adsorbed SO2. On the basis of the experimental results, a mechanism for the reaction of ZnS with oxygen is proposed. RP SIRIWARDANE, RV (reprint author), US DOE,MORGANTOWN ENERGY TECHNOL CTR,POB 880,MORGANTOWN,WV 26505, USA. NR 16 TC 21 Z9 22 U1 0 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0888-5885 J9 IND ENG CHEM RES JI Ind. Eng. Chem. Res. PD FEB PY 1995 VL 34 IS 2 BP 699 EP 702 DI 10.1021/ie00041a032 PG 4 WC Engineering, Chemical SC Engineering GA QF748 UT WOS:A1995QF74800032 ER PT J AU REILLY, SD KHALSA, GRK FORD, DK BRAINARD, JR HAY, BP SMITH, PH AF REILLY, SD KHALSA, GRK FORD, DK BRAINARD, JR HAY, BP SMITH, PH TI OCTAAZACRYPTAND COMPLEXATION OF THE FLUORIDE-ION SO INORGANIC CHEMISTRY LA English DT Article ID MACROCYCLE INTERACTION; KINETIC DATA; CONFORMATIONAL-ANALYSIS; MOLECULAR MECHANICS; EXPANDED PORPHYRIN; ANION COMPLEXATION; FORCE-FIELD; METAL-IONS; SAPPHYRIN; RECEPTOR AB The fundamental properties of proton, fluoride, and chloride binding of the octaazacryptand L have been investigated by potentiometry and NMR spectroscopy. Successive protonation constants of L are 11.18(16), 9.43(08), 7.59(07), 5.78(02), and 4.39(33), with the last value corresponding to a two-proton step. H-1 NMR spectra at 250 MHz indicate that proton exchange is slow on the NMR time scale in the pH region where the two-proton step occurs. It is proposed that this results from disruption of an internal hydrogen bond network and heightened electrostatic repulsions present in tetraprotonated L. NMR data also suggest that protonation occurs predominantly at the secondary amines over the pH range studied. Triprotonated L binds fluoride significantly (log K = 3.6(4)) near neutral pH, and further protonation of L increases the fluoride complex stability (log K = 11.2(5) for the hexaprotonated fluoride complex). H-1 NMR data show that the rate of fluoride exchange decreases with solution pH. The magnitude of the aqueous fluoride binding constant, the substantial NMR shifts, and the published solid state structure suggest fluoride is bound inside the cavity of protonated L. MM2 calculations predict the strain energy of L increases by 10.2 kcal/mol when the expected nitrogen-halide hydrogen bond length increases from that of fluoride to that of chloride. Size selectivity of Lis proposed to explain the fact that fluoride is bound over 10(7) times stronger than chloride. C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,MAT & CHEM DESIGN GRP,LOS ALAMOS,NM 87545. NR 55 TC 59 Z9 59 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD FEB 1 PY 1995 VL 34 IS 3 BP 569 EP 575 DI 10.1021/ic00107a008 PG 7 WC Chemistry, Inorganic & Nuclear SC Chemistry GA QE840 UT WOS:A1995QE84000008 ER PT J AU JAMES, CA WOODRUFF, W AF JAMES, CA WOODRUFF, W TI A MODEL FOR THE SHUTTLING LIGAND OF CYTOCHROME-C-OXIDASE - THE SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF ALLYL-FE(TPP) AND CP-FE(TPP) SO INORGANICA CHIMICA ACTA LA English DT Note DE CYTOCHROME C OXIDASE; LIGAND SHUTTLE; ALLYL COMPLEXES; IRON COMPLEXES; PORPHYRIN COMPLEXES ID COMPLEXES; PORPHYRINS; IRON AB Cytochrome c oxidase catalyzes the reduction of molecular oxygen to water and has been the subject of many studies. The focus of previous studies has been the characterization of intermediates that occur in the reduction of dioxygen to water. Cytochrome a(3), one of the hemes in cytochrome c oxidase, contains a farnesyl tail which is thought to 'shuttle' in and out of the binuclear site during the course of the catalytic reaction. While in the binuclear site, the tail is thought to be coordinated to the heme iron center in a pi-allyl fashion. With this thought in mind, the synthesis and characterization of two model complexes for this pi-allyl intermediate are reported here. RP JAMES, CA (reprint author), LOS ALAMOS NATL LAB,SPECT & BIOCHEM GRP,LOS ALAMOS,NM 87532, USA. NR 7 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0020-1693 J9 INORG CHIM ACTA JI Inorg. Chim. Acta PD FEB PY 1995 VL 229 IS 1-2 BP 9 EP 11 DI 10.1016/0020-1693(94)04277-3 PG 3 WC Chemistry, Inorganic & Nuclear SC Chemistry GA QN475 UT WOS:A1995QN47500003 ER PT J AU RABERN, DA PARKER, RB AF RABERN, DA PARKER, RB TI LAUNCH BEHAVIOR OF 60-MM PUSHED AND TRACTION DRIVEN SABOTED LAUNCH PACKAGES SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article AB Launch behaviour of push and traction driven saboted penetrators are examined for three experimental 60-mm sabot/rod systems. Finite element simulations of the launch packages were performed to determine structural integrity and survivability during the launch phases of projectiles in the 1.9-2.4km/s velocity range. Results from ballistics experiments from a 60-mm experimental gun are examined. Performance and limitations of the three systems are reviewed. RP RABERN, DA (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PD FEB PY 1995 VL 16 IS 1 BP 133 EP 148 DI 10.1016/0734-743X(94)00036-V PG 16 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA QC193 UT WOS:A1995QC19300007 ER PT J AU WELLS, JC OBERACKER, VE STRAYER, MR UMAR, AS AF WELLS, JC OBERACKER, VE STRAYER, MR UMAR, AS TI SPECTRAL PROPERTIES OF DERIVATIVE OPERATORS IN THE BASIS-SPLINE COLLOCATION METHOD SO INTERNATIONAL JOURNAL OF MODERN PHYSICS C-PHYSICS AND COMPUTERS LA English DT Article DE BASIS-SPLINES; COLLOCATION METHOD; LATTICE TECHNIQUES; DIRAC EQUATION ID LATTICE FERMIONS; IMPLEMENTATION; TIME AB We discuss the basis-spline collocation method for the lattice solution of boundary-value differential equations, drawing particular attention to the difference between lattice and continuous collocation methods. Spectral properties of the basis-spline lattice representation of the first and second spatial derivatives are studied for the case of periodic boundary conditions with homogeneous lattice spacing and compared to spectra obtained using traditional finite-difference schemes. Basis-spline representations are shown to give excellent resolution on small-length scales and to satisfy the chain rule with good fidelity for the lattice-derivative operators using high-order splines. Application to the one-dimensional Dirac equation shows that very high-order spline representations of the Hamiltonian on odd lattices avoid the notorious spectral-doubling problem. C1 VANDERBILT UNIV,DEPT PHYS & ASTRON,NASHVILLE,TN 37235. RP WELLS, JC (reprint author), OAK RIDGE NATL LAB,DIV PHYS,CTR COMPUTATIONALLY INTENS PHYS,OAK RIDGE,TN 37831, USA. RI Umar, Ahmet/J-4125-2013; Wells, Jack/D-3675-2016 OI Umar, Ahmet/0000-0002-9267-5253; Wells, Jack/0000-0002-5083-3030 NR 19 TC 15 Z9 15 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0129-1831 J9 INT J MOD PHYS C JI Int. J. Mod. Phys. C-Phys. Comput. PD FEB PY 1995 VL 6 IS 1 BP 143 EP 167 DI 10.1142/S0129183195000125 PG 25 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA QR825 UT WOS:A1995QR82500011 ER PT J AU GOLDSTEIN, CI AF GOLDSTEIN, CI TI PRECONDITIONING CONVECTION DOMINATED CONVECTION-DIFFUSION PROBLEMS SO INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW LA English DT Article DE PRECONDITIONING; ITERATIVE METHODS; CONVECTION DOMINATED ID HELMHOLTZ-EQUATION; SYSTEMS AB This paper is concerned with the numerical solution of multi-dimensional convection dominated convection-diffusion problems. These problems are characterized by a large parameter, K, multiplying the convection terms. The goal of this work is the development and analysis of effective preconditioners for iteratively solving the large system of linear equations arising from various finite element and finite difference discretizations with grid size h. When centered finite difference schemes and standard Galerkin finite element methods are used, h must be related to K by the stability constraint, Kh less-than-or-equal-to C0, where the constant C0 is sufficiently small. A class of preconditioners is developed that significantly reduces the condition number for large K and small h. Furthermore, these preconditioners are inexpensive to implement and well suited for parallel computation. It is shown that under suitable assumptions, the number of iterations remains bounded as h --> 0 with K fixed and, at worst, grows slowly as K --> infinity. Numerical results are presented illustrating the theory. It is also shown how to apply the theoretical results to more general convection-diffusion problems and alternative discretizations (including streamline diffusion methods) that remain stable as Kh --> infinity. RP GOLDSTEIN, CI (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 20 TC 5 Z9 5 U1 0 U2 0 PU PINERIDGE PRESS LTD PI SWANSEA PA 54 NEWTON RD MUMBLES, SWANSEA SA3 4BQ, WALES SN 0961-5539 J9 INT J NUMER METHOD H JI Int. J. Numer. Methods Heat Fluid Flow PD FEB PY 1995 VL 5 IS 2 BP 99 EP 119 DI 10.1108/EUM0000000004059 PG 21 WC Thermodynamics; Mathematics, Interdisciplinary Applications; Mechanics SC Thermodynamics; Mathematics; Mechanics GA QX523 UT WOS:A1995QX52300001 ER PT J AU GAUTESEN, AK AF GAUTESEN, AK TI A PHYSICAL APPROACH TO ASYMPTOTICALLY SOLVING SOME INTEGRAL-EQUATIONS OCCURRING IN SOLID MECHANICS SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES LA English DT Article; Proceedings Paper CT Symposium on Multiphase Elasticity and the Dundurs Parameters, at the 12th US National Congress of Theoretical and Applied Mechanics CY JUN 28-30, 1994 CL SEATTLE, WA SP NORTHWESTERN UNIV, UNIV ILLINOIS CHICAGO ID INTERFACE CRACK; EIGENVALUE PROBLEM; TENSION FIELD; SHEAR FIELD; GAP AB We use the Comninou model of the interface crack to illustrate a method of solving a class of integral equations containing a small parameter. We need to know the inverse of the integral equation when this small parameter is set equal to zero. This inverse, when applied to the original integral equation, leads to an expression for the unknown which is an asymptotic series in the small parameter, provided the field point x is outside the boundary layer. Next we need to know the inverse of an integral equation which models the given integral equation for points x in the boundary layer. When this inverse is applied to the original integral equation, one obtains an expression for the unknown which is an asymptotic series in the small parameter, provided the field point x is inside the boundary layer. This solution and the former solution are often referred to as the inner and outer solutions, respectively. They each contain unknown constants. These constants are determined by matching the inner and outer solutions on an overlap region where both solutions are valid. A uniform expression for the solution is obtained by adding the inner and outer solutions and subtracting off the matching terms. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT MATH,AMES,IA 50011. RP GAUTESEN, AK (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. NR 11 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7683 J9 INT J SOLIDS STRUCT JI Int. J. Solids Struct. PD FEB PY 1995 VL 32 IS 3-4 BP 375 EP 382 DI 10.1016/0020-7683(94)00118-G PG 8 WC Mechanics SC Mechanics GA QB705 UT WOS:A1995QB70500010 ER PT J AU VISWANATHAN, S AF VISWANATHAN, S TI THE ROLE OF SOLIDIFICATION IN PRODUCTS AND PROCESSES SO JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY LA English DT Editorial Material RP VISWANATHAN, S (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1047-4838 J9 JOM-J MIN MET MAT S JI JOM-J. Miner. Met. Mater. Soc. PD FEB PY 1995 VL 47 IS 2 BP 37 EP 37 PG 1 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing GA QF301 UT WOS:A1995QF30100006 ER PT J AU ELLIS, TW JONES, LL BLOOMER, TE AF ELLIS, TW JONES, LL BLOOMER, TE TI EFFECTS OF OXYGEN ON THE SOLIDIFICATION MICROSTRUCTURE OF LANI5 SO JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY LA English DT Article AB Modern nickel/metal hydride batteries and cryogenic refrigerators based on hydrogen absorption rely heavily on the rare-earth intermetallic compound LaNi5. Proper stoichiometry is crucial to obtain optimum performance in this compound. Oxygen segregation during solidification of these materials can lead to depletion of lanthanum through the formation La2O3. This, in turn, can greatly reduce the phase purity of these materials, thus limiting their performance in many applications. A series of LaNi5 alloys were produced by nonconsumable arc melting with various oxygen contents. These alloys were investigated principally by Auger spectroscopy. Correlations were made between the solidification microstructure and the oxygen content at a known solidification rate. Hydrogen storage capacities were also measured to evaluate the absorption properties of the solidification-derived microstructure. Increasing oxygen content was found to reduce the hydrogen absorption capacity of these materials. RP ELLIS, TW (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,CTR MAT PREPARAT,242 SPEDDING,AMES,IA 50011, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1047-4838 J9 JOM-J MIN MET MAT S JI JOM-J. Miner. Met. Mater. Soc. PD FEB PY 1995 VL 47 IS 2 BP 47 EP 49 PG 3 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing GA QF301 UT WOS:A1995QF30100010 ER PT J AU JURADO, M MANOSA, L PLANES, A STASSIS, C AF JURADO, M MANOSA, L PLANES, A STASSIS, C TI AN EXPERIMENTAL-STUDY OF THE COUPLING BETWEEN THE ORDER-DISORDER TRANSITION AND THE MARTENSITIC-TRANSFORMATION IN CU-AL-BE SHAPE-MEMORY ALLOYS SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT IIIrd European Symposium on Martensitic Transformations (ESOMAT 94) CY SEP 14-16, 1994 CL BARCELONA, SPAIN SP MINIST EDUC & CIEN, SPAIN GOVT, DIRECCIO GEN RECERCA, CATALAN GOVT, UNIV BARCELONA, SERV SCI AMBASSADE FRANCE ESPAGNE, FUNDACIO CATALANA RECERCA, BRIT COUNCIL, INSTRON LTD ID ZN AB Order-disorder transitions in Cu-Al-Be alloys have been studied by means of X-ray diffraction measurements, Assuming that different ordered degrees can be ''frozen'' with suitable heat treatments, their effect on the martensitic transformation has been analized by microcalorimetry. The results indicate a change in the temperature of the martensitic transformation directly related to the change of the order degree: disordering stabilizes the martensite phase. Other effects observed after specific heat treatments have been associated to the vacancies retained after the quench, Additional elastic neutron scattering experiments provide data to fit the temperature changes to a previous proposed model. C1 US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. RP JURADO, M (reprint author), UNIV BARCELONA,FAC FIS,DEPT ESTRUCTURA & CONSTITUENTS MAT,DIAGONAL 647,E-08028 BARCELONA,SPAIN. RI Manosa, Lluis/D-8579-2014; Planes, Antoni/O-1904-2015 OI Manosa, Lluis/0000-0002-1182-2670; Planes, Antoni/0000-0001-5213-5714 NR 14 TC 5 Z9 5 U1 0 U2 0 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 1155-4339 J9 J PHYS IV JI J. Phys. IV PD FEB PY 1995 VL 5 IS C2 BP 165 EP 170 DI 10.1051/jp4:1995225 PG 6 WC Physics, Multidisciplinary SC Physics GA QX407 UT WOS:A1995QX40700026 ER PT J AU SCHRYVERS, D TOTH, L MA, Y TANNER, L AF SCHRYVERS, D TOTH, L MA, Y TANNER, L TI NUCLEATION AND GROWTH OF THE NI5AL3 PHASE IN NI-AL AUSTENITE AND MARTENSITE SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT IIIrd European Symposium on Martensitic Transformations (ESOMAT 94) CY SEP 14-16, 1994 CL BARCELONA, SPAIN SP MINIST EDUC & CIEN, SPAIN GOVT, DIRECCIO GEN RECERCA, CATALAN GOVT, UNIV BARCELONA, SERV SCI AMBASSADE FRANCE ESPAGNE, FUNDACIO CATALANA RECERCA, BRIT COUNCIL, INSTRON LTD ID ELECTRON-MICROSCOPY; ALLOYS AB The nucleation and growth mechanisms of Ni5Al3 precipitates and microtwinned plates in B2 austenite and 2M (3R) martensite phases are described on the basis of conventional and high resolution electron microscopy. In the Ni62.5Al37.5 B2 austenite matrix short annealings at 550 degrees C introduce three-pointed star shaped precipitates consisting of twin related parts of different variants of the Ni5Al3 structure. Longer annealings result in plates growing separately from these wings and developing microtwinning in order to accommodate stress built-up at the interfaces with the surrounding matrix. Annealing of Ni65Al35 2M martensite plates induces simple reordering into the Ni5Al3 phase, increasing the fct c/a ratio by about 1%. As a result stracking faults are introduced in the smallest twin variants. C1 MFKI,DEPT THIN FILMS,H-1325 BUDAPEST,HUNGARY. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP SCHRYVERS, D (reprint author), UNIV ANTWERP,RIJKSUNIV CTR ANTWERP,EMAT,GROENENBORGERLAAN 171,B-2020 ANTWERP,BELGIUM. NR 7 TC 3 Z9 3 U1 0 U2 1 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 1155-4339 J9 J PHYS IV JI J. Phys. IV PD FEB PY 1995 VL 5 IS C2 BP 299 EP 304 DI 10.1051/jp4:1995246 PG 6 WC Physics, Multidisciplinary SC Physics GA QX407 UT WOS:A1995QX40700047 ER PT J AU METROPOLIS, N ROTA, GC STEIN, JA AF METROPOLIS, N ROTA, GC STEIN, JA TI SYMMETRY CLASSES OF FUNCTIONS SO JOURNAL OF ALGEBRA LA English DT Article C1 MIT,CAMBRIDGE,MA 02139. CALIF STATE COLL SAN BERNARDINO,SAN BERNARDINO,CA 92407. RP METROPOLIS, N (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 10 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-8693 J9 J ALGEBRA JI J. Algebra PD FEB 1 PY 1995 VL 171 IS 3 BP 845 EP 866 DI 10.1006/jabr.1995.1039 PG 22 WC Mathematics SC Mathematics GA QJ148 UT WOS:A1995QJ14800008 ER PT J AU DORAN, JC SHAW, WJ HUBBE, JM AF DORAN, JC SHAW, WJ HUBBE, JM TI BOUNDARY-LAYER CHARACTERISTICS OVER AREAS OF INHOMOGENEOUS SURFACE FLUXES SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID LAND-SURFACE; MODELS; HETEROGENEITY; CIRCULATIONS; TERRAIN; CLIMATE; IMPACT; HEAT AB This paper describes results from a June 1992 held program to study the response of the boundary layer over a site with well-defined extreme differences in sensible and latent heat fluxes over clearly separated areas, each with characteristic length scales of 10 km or more. The experiment region consisted of semiarid grassland steppe and irrigated farmland. Sensible heat flux maxima over the steppe regularly reached values in excess of 300 W m(-2) and were typically a factor of 4 or more greater than those over the farmland. Two days were selected for analysis: one with moderate winds of 7-10 m s(-1) and one with lighter winds of 4-7 m s(-1) over the steppe. In both cases the wind directions were nearly perpendicular to the boundary between the steppe and farm. An analysis of potential temperature soundings showed that mixed-layer characteristics over both the farm and the steppe were largely determined by heating over the steppe, with advection from the steppe to the farm playing a significant role. On the day with the lighter winds, a secondary circulation related to the thermal contrasts between the two areas was observed. A simple conceptual model is described that predicts the extent of the cooler area required to generate such circulations. The observations illustrate how predictions of boundary layer structure in terms of local surface sensible heat fluxes may be compromised by advective effects. Such difficulties complicate efforts to obtain accurate representations of surface fluxes over inhomogeneous surfaces even if parameterizations of mesoscale contributions to the heat flux are included. RP DORAN, JC (reprint author), PACIFIC NW LAB, CTR EARTH & ENVIRONM SCI, POB 999,MS K6-11, RICHLAND, WA 99352 USA. NR 17 TC 44 Z9 44 U1 0 U2 3 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD FEB PY 1995 VL 34 IS 2 BP 559 EP 571 DI 10.1175/1520-0450-34.2.559 PG 13 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QQ916 UT WOS:A1995QQ91600021 ER PT J AU SRINIVASANRAO, T FISCHER, J TSANG, T AF SRINIVASANRAO, T FISCHER, J TSANG, T TI PHOTOEMISSION FROM MG IRRADIATED BY SHORT-PULSE ULTRAVIOLET AND VISIBLE LASERS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID LIGHT RP SRINIVASANRAO, T (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 10 TC 13 Z9 13 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD FEB 1 PY 1995 VL 77 IS 3 BP 1275 EP 1279 DI 10.1063/1.358929 PG 5 WC Physics, Applied SC Physics GA QE049 UT WOS:A1995QE04900050 ER PT J AU PEASE, GR RUBINSKY, B WONG, STS ROOS, MS GILBERT, JC ARAV, A AF PEASE, GR RUBINSKY, B WONG, STS ROOS, MS GILBERT, JC ARAV, A TI AN INTEGRATED PROBE FOR MAGNETIC-RESONANCE-IMAGING MONITORED SKIN CRYOSURGERY SO JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME LA English DT Article ID LESIONS; TUMORS; NMR AB Cryosurgery of the skin is a common treatment for both benign and malignant skin cancers. Monitoring the depth of the frozen lesion during cryosurgery, either by estimation based on the lateral spread of freeze at the skin surface or via thermocouples, may be inaccurate because of the heterogeneous nature of tissue. We describe an integrated cryosurgical probe and magnitude resonance imaging probe which we use to obtain high resolution MR images of skin, subcutaneous muscle and the frozen lesion during cryosurgey. C1 UNIV CALIF BERKELEY,DEPT MECH ENGN,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR FUNCT IMAGING,DIV LIFE SCI,BERKELEY,CA 94720. RI Rubinsky, Boris/B-4439-2010 OI Rubinsky, Boris/0000-0002-2794-1543 FU NCI NIH HHS [1R01CA56898-01] NR 22 TC 11 Z9 11 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0148-0731 J9 J BIOMECH ENG-T ASME JI J. Biomech. Eng.-Trans. ASME PD FEB PY 1995 VL 117 IS 1 BP 59 EP 63 DI 10.1115/1.2792271 PG 5 WC Biophysics; Engineering, Biomedical SC Biophysics; Engineering GA QJ949 UT WOS:A1995QJ94900008 PM 7609486 ER PT J AU KINNEY, JH LANE, NE HAUPT, DL AF KINNEY, JH LANE, NE HAUPT, DL TI IN-VIVO, 3-DIMENSIONAL MICROSCOPY OF TRABECULAR BONE SO JOURNAL OF BONE AND MINERAL RESEARCH LA English DT Article ID OSTEOPOROSIS; ARCHITECTURE; TOMOGRAPHY; WIDTH AB Osteoporosis, which is correlated with low bone mass and increased bone fragility, is responsible for about 1.2 million fractures per year in the United States. We have used the three-dimensional (3-D), X-ray tomographic microscope to image the trabecular bone architecture of the proximal tibias of six Sprague-Dawley rats in vivo. Three of these rats were then ovariectomized to induce estrogen depletion, and three remained as controls. Five weeks later, the tibias were reimaged. The ovariectomized rats lost approximately 65% of their trabecular bone volume as compared with an insignificant change in the control rats. The connectivity density of the trabecular bone, as measured by the Euler characteristic, was linearly correlated with trabecular bone volume, even in the ovariectomized rats. Hypoestrogenemic bone loss manifested itself in greatly reduced connectivity and fewer trabecular elements, but not in thinning of trabeculae. The ability to microscopically image sequential changes in the 3-D architecture of trabecular bone in vivo will allow exploration of the earliest stages of hypoestrogenemic bone loss and to more rapidly test the effectiveness of new clinical treatments for this major public health problem. C1 UNIV CALIF SAN FRANCISCO,SAN FRANCISCO,CA 94143. RP KINNEY, JH (reprint author), LAWRENCE LIVERMORE NATL LAB,L-356,POB 808,LIVERMORE,CA 94550, USA. NR 30 TC 165 Z9 167 U1 0 U2 6 PU BLACKWELL SCIENCE PUBL INC CAMBRIDGE PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0884-0431 J9 J BONE MINER RES JI J. Bone Miner. Res. PD FEB PY 1995 VL 10 IS 2 BP 264 EP 270 PG 7 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA QF460 UT WOS:A1995QF46000012 PM 7754806 ER PT J AU JONES, PL BOUDREAU, N MYERS, CA ERICKSON, HP BISSELL, MJ AF JONES, PL BOUDREAU, N MYERS, CA ERICKSON, HP BISSELL, MJ TI TENASCIN-C INHIBITS EXTRACELLULAR MATRIX-DEPENDENT GENE-EXPRESSION IN MAMMARY EPITHELIAL-CELLS - LOCALIZATION OF ACTIVE REGIONS USING RECOMBINANT TENASCIN FRAGMENTS SO JOURNAL OF CELL SCIENCE LA English DT Article DE BETA-CASEIN; EXTRACELLULAR MATRIX; MAMMARY GLAND; TENASCIN AB The physiological role of tenascin in vivo has remained obscure. Although tenascin is regulated in a stage and tissue-dependent manner, knock-out mice appear normal, When tenascin expression was examined in the normal adult mouse mammary gland, little or none was present during lactation, when epithelial cells actively synthesize and secrete milk proteins in an extracellular matrix/lactogenic hormone-dependent manner. In contrast, tenascin was prominently expressed during involution, a stage characterized by the degradation of the extracellular matrix and the subsequent loss of milk production, Studies with mammary cell lines indicated that tenascin expression was high on plastic, but was suppressed in the presence of the laminin-rich, Engelbreth-Holm-Swarm (EHS) tumour biomatrix. When exogenous tenascin was added together with EHS to mammary epithelial cells. beta-casein protein synthesis and steady-state mRNA levels were inhibited in a concentration-dependent manner. Moreover, this inhibition by tenascin could be segregated from its effects on cell morphology. Using two beta-casein promoter constructs attached to the chloramphenicol acetyltransferase reporter gene we showed that tenascin selectively suppressed extracellular matrix/prolactin-dependent transcription of the beta-casein gene in three-dimensional cultures, Finally, we mapped the active regions within the fibronectin type III repeat region of the tenascin molecule that are capable of inhibiting beta-casein protein synthesis, Our data are consistent with a model where both the loss of a laminin-rich basement membrane by extracellular matrix-degrading enzymes and the induction of tenascin contribute to the loss of tissue-specific gene expression and thus the involuting process. C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV LIFE SCI, BERKELEY, CA 94720 USA. DUKE UNIV, MED CTR, DEPT CELL BIOL, DURHAM, NC 27710 USA. NR 59 TC 61 Z9 62 U1 0 U2 0 PU COMPANY OF BIOLOGISTS LTD PI CAMBRIDGE PA BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE CB4 4DL, CAMBS, ENGLAND SN 0021-9533 J9 J CELL SCI JI J. Cell Sci. PD FEB PY 1995 VL 108 BP 519 EP 527 PN 2 PG 9 WC Cell Biology SC Cell Biology GA QK898 UT WOS:A1995QK89800010 PM 7539436 ER PT J AU OSHIMA, J CAMPISI, J TANNOCK, TCA MARTIN, GM AF OSHIMA, J CAMPISI, J TANNOCK, TCA MARTIN, GM TI REGULATION OF C-FOS EXPRESSION IN SENESCING WERNER SYNDROME FIBROBLASTS DIFFERS FROM THAT OBSERVED IN SENESCING FIBROBLASTS FROM NORMAL DONORS SO JOURNAL OF CELLULAR PHYSIOLOGY LA English DT Article ID CELL-CYCLE; REPLICATIVE SENESCENCE; GROWTH-FACTOR; AP-1 ACTIVITY; DNA-SYNTHESIS; P53 PROTEIN; TRANSCRIPTION; STATIN; GENE; IDENTIFICATION AB The Werner syndrome (WS) is a segmental progeroid syndrome caused by a recessive mutation (WRN) mapped to 8p12. The replicative life spans of somatic cells cultured from WS patients are substantially reduced compared to age-matched controls. Certain molecular concomitants of the replicative decline of normal fibroblast cultures have recently been defined, and it appears that multiple changes in gene expression accompany normal cell senescence. If the mechanisms by which WS cells exit the cell cycle were entirely comparable, the molecular markers of senescence should be identical in normal and WS cells. We find that this is not the case. The constitutive expression of statin, a nuclear protein associated with the nonproliferating state, was comparably expressed in normal and WS senescent cells. Likewise, the steady state levels of p53, a protein known to be involved in the G1 checkpoint of the cell cycle, were similar in early-passage fibroblasts from normal and WS subjects. The levels of p53 were not increased in senescent fibroblasts, whether derived from normal or WS subjects. By contrast, the inducibility of mRNA and protein expression of the c-fos protooncogene is preserved in late-passage WS cells. This is in contrast to what is observed in late-passage fibroblasts from normal subjects. Additional genotypes will have to be examined, however, to determine the specificity of this new aspect of the WS phenotype. (C) 1995 Wiley-Liss, Inc. C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DEPT MOLEC & CELL BIOL, BERKELEY, CA 94720 USA. UCL HOSP, HUNTLEY CTR, DEPT PSYCHIAT, LONDON WC1E 6AU, ENGLAND. RP OSHIMA, J (reprint author), UNIV WASHINGTON, DEPT PATHOL, SM-30, SEATTLE, WA 98195 USA. FU NIA NIH HHS [AG0057, AG08303, AG09909] NR 44 TC 66 Z9 67 U1 0 U2 0 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0021-9541 J9 J CELL PHYSIOL JI J. Cell. Physiol. PD FEB PY 1995 VL 162 IS 2 BP 277 EP 283 DI 10.1002/jcp.1041620213 PG 7 WC Cell Biology; Physiology SC Cell Biology; Physiology GA QH423 UT WOS:A1995QH42300012 PM 7822435 ER PT J AU PRATT, ST GINTER, ML AF PRATT, ST GINTER, ML TI 2-PHOTON SPECTROSCOPY OF HI IN THE 69,600-73,600-CM(-1) REGION SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID ENHANCED MULTIPHOTON IONIZATION; PULSED SUPERSONIC JET; ELECTRONIC-SPECTRA; HYDROGEN HALIDES; PHOTOELECTRON-SPECTROSCOPY; 2-PHOTON SPECTROSCOPY; STATES; HCL; CM-1; CHI-1-SIGMA+ C1 UNIV MARYLAND, INST PHYS SCI & TECHNOL, COLLEGE PK, MD 20742 USA. RP ARGONNE NATL LAB, 9700 S CASS AVE, ARGONNE, IL 60439 USA. NR 35 TC 15 Z9 15 U1 0 U2 3 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 FEB 1 PY 1995 VL 102 IS 5 BP 1882 EP 1888 DI 10.1063/1.468753 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QD542 UT WOS:A1995QD54200003 ER PT J AU KENDRICK, B PACK, RT AF KENDRICK, B PACK, RT TI POTENTIAL-ENERGY SURFACES FOR THE LOW-LYING (2)A'' AND (2)A' STATES OF HO2 - USE OF THE DIATOMICS IN MOLECULES MODEL TO FIT AB-INITIO DATA SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MANY-BODY EXPANSION; THEORETICAL CHARACTERIZATION; GROUND-STATE; WAVE-FUNCTIONS; KINETIC DATA; H2O; OH; PHOTODISSOCIATION; COEFFICIENTS; DEPENDENCE RP KENDRICK, B (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,T-12,MS-B268,LOS ALAMOS,NM 87545, USA. NR 67 TC 85 Z9 85 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 1 PY 1995 VL 102 IS 5 BP 1994 EP 2012 DI 10.1063/1.468765 PG 19 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QD542 UT WOS:A1995QD54200015 ER PT J AU PETERSON, KA DUNNING, TH AF PETERSON, KA DUNNING, TH TI BENCHMARK CALCULATIONS WITH CORRELATED MOLECULAR WAVE-FUNCTIONS .7. BINDING-ENERGY AND STRUCTURE OF THE HF DIMER SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID HYDROGEN-FLUORIDE DIMER; CONFIGURATION-INTERACTION CALCULATIONS; GAUSSIAN-BASIS SETS; ABINITIO CALCULATION; PERTURBATION-THEORY; DIATOMIC HYDRIDES; BONDED COMPLEXES; (HF)2; SURFACE; SPECTRA C1 PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, RICHLAND, WA 99352 USA. RP PETERSON, KA (reprint author), WASHINGTON STATE UNIV, DEPT CHEM, RICHLAND, WA 99352 USA. NR 63 TC 231 Z9 231 U1 0 U2 7 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 FEB 1 PY 1995 VL 102 IS 5 BP 2032 EP 2041 DI 10.1063/1.468725 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QD542 UT WOS:A1995QD54200018 ER PT J AU MCGRAW, R AF MCGRAW, R TI 2-DIMENSIONAL KINETICS OF BINARY NUCLEATION IN SULFURIC ACID-WATER MIXTURES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID VAPOR-PHASE NUCLEATION RP MCGRAW, R (reprint author), BROOKHAVEN NATL LAB,DIV ENVIRONM CHEM,UPTON,NY 11973, USA. NR 17 TC 39 Z9 39 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD FEB 1 PY 1995 VL 102 IS 5 BP 2098 EP 2108 DI 10.1063/1.468731 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QD542 UT WOS:A1995QD54200024 ER PT J AU RONNOVJESSEN, L PETERSEN, OW KOTELIANSKY, VE BISSELL, MJ AF RONNOVJESSEN, L PETERSEN, OW KOTELIANSKY, VE BISSELL, MJ TI THE ORIGIN OF THE MYOFIBROBLASTS IN BREAST-CANCER - RECAPITULATION OF TUMOR ENVIRONMENT IN CULTURE UNRAVELS DIVERSITY AND IMPLICATES CONVERTED FIBROBLASTS AND RECRUITED SMOOTH SO JOURNAL OF CLINICAL INVESTIGATION LA English DT Article DE TUMOR MODELING; MICROENVIRONMENT; STROMAL REACTION; STROMAL EPITHELIAL INTERACTIONS; EXTRACELLULAR MATRIX ID GROWTH-FACTOR-BETA; MUSCLE ACTIN; STROMAL CELLS; MONOCLONAL-ANTIBODY; GRANULATION-TISSUE; TRANSFORMING GROWTH-FACTOR-BETA-1; DIFFERENTIATION PATTERN; MICROVASCULAR PERICYTES; EXTRACELLULAR-MATRIX; GENE-EXPRESSION AB The origin of myofibroblasts in stromal. reaction has been a subject of controversy. To address this question definitively, we developed techniques for purification and characterization of major stromal cell types. We defined a panel of markers that could, in combination, unequivocally distinguish these cell types by immunocytochemistry, iso-electric focusing, immunoblotting, and two-dimensional gel electrophoresis. We then devised an assay to recapitulate in culture, within two weeks of incubation, critical aspects of the microenvironment in vivo including the typical tissue histology and stromal reaction. When confronted with tumor cells in this assay, fibroblasts readily converted into a graded pattern of myogenic differentiation, strongest in the immediate vicinity of tumor cells. Vascular smooth muscle cells (VSMC), in contrast, did not change appreciably and remained coordinately smooth muscle differentiated. Midcapillary pericytes showed only a slight propensity for myogenic differentiation. Analysis of ten primary tumors implicated converted fibroblasts (10/10), vascular smooth muscle cells (4/10), and pericytes (1/10) in the stromal reaction. Tumor cells were shown to specifically denude the venules both in culture and in vivo, explaining the VSMC phenotype in the stroma. The establishment of this assay and clarification of the origin of these cells pave the way for further analysis of the mechanisms of conversion, and of the consequence of such heterogeneity for diagnosis and treatment. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV LIFE SCI,BERKELEY,CA 94720. UNIV COPENHAGEN,PANUM INST,INST MED ANAT,STRUCT CELL BIOL UNIT,DK-2200 COPENHAGEN N,DENMARK. UNIV COPENHAGEN,PANUM INST,INST MED ANAT,STRUCT CELL BIOL UNIT,DK-2200 COPENHAGEN N,DENMARK. LAB PHYSIOPATHOL DEV,CNRS,URA 1337,F-75230 PARIS 05,FRANCE. ECOLE NORMALE SUPER,F-75230 PARIS 05,FRANCE. RI Ronnov-Jessen OR Ronnovjessen, Lone/A-5981-2013 NR 74 TC 291 Z9 300 U1 2 U2 7 PU ROCKEFELLER UNIV PRESS PI NEW YORK PA 222 E 70TH STREET, NEW YORK, NY 10021 SN 0021-9738 J9 J CLIN INVEST JI J. Clin. Invest. PD FEB PY 1995 VL 95 IS 2 BP 859 EP 873 DI 10.1172/JCI117736 PG 15 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA QG209 UT WOS:A1995QG20900056 PM 7532191 ER PT J AU LI, YS WRINN, MC NEWSAM, JM SEARS, MP AF LI, YS WRINN, MC NEWSAM, JM SEARS, MP TI PARALLEL IMPLEMENTATION OF A MESH-BASED DENSITY-FUNCTIONAL ELECTRONIC-STRUCTURE CODE SO JOURNAL OF COMPUTATIONAL CHEMISTRY LA English DT Article ID BOND LENGTHS; SYSTEMS; RECONSTRUCTION; MOLECULES; C60 AB We describe the implementation of the mesh-based first-principles density functional code DMol on nCUBE 2 parallel computers. The numerical mesh nature of DMol makes it naturally suited for a massively parallel computational environment. Our parallelization strategy consists of a domain decomposition of mesh points. This evenly distributes mesh points to all available processors and leads to a substantial computational speedup with limited communication overhead and good node balancing. To achieve better performance and circumvent memory storage limitations, the torus wrap method is used to distribute both the Hamiltonian and overlap matrices, and a parallel matrix diagonalization routine is employed to calculate eigenvalues and eigenvectors. Benchmark calculations on a 128-node nCUBE 2 are presented. (C) 1995 by John Wiley and Sons, Inc. C1 SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. RP BIOSYM TECHNOL INC, 9685 SCRANTON RD, SAN DIEGO, CA 92121 USA. NR 28 TC 9 Z9 9 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0192-8651 EI 1096-987X J9 J COMPUT CHEM JI J. Comput. Chem. PD FEB PY 1995 VL 16 IS 2 BP 226 EP 234 DI 10.1002/jcc.540160209 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA QC857 UT WOS:A1995QC85700008 ER PT J AU KNOLL, DA MCHUGH, PR AF KNOLL, DA MCHUGH, PR TI AN INEXACT NEWTON ALGORITHM FOR SOLVING THE TOKAMAK EDGE PLASMA FLUID EQUATIONS ON A MULTIPLY-CONNECTED DOMAIN SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID NONSYMMETRIC LINEAR-SYSTEMS; MINIMAL RESIDUAL ALGORITHM; CONJUGATE-GRADIENT METHODS; DIII-D; ITERATIVE SOLUTION; FULLY IMPLICIT; SLOT DIVERTOR; MATRIX; CODE; TRANSPORT AB Newton's method is combined with a preconditioned conjugate gradient-like algorithm and finite volume discretization to solve the steady-state two-dimensional tokamak edge plasma fluid equations. A numerical evaluation of the Jacobian is employed. Mesh sequencing, pseudo-transient continuation, and adaptive damping are used to increase the radius of convergence. The computations are performed on a multiply-connected curvilinear geometry in a fully coupled manner. The preconditioned conjugate gradient-like algorithm is shown to have a significant storage advantage over the previously used banded Gaussian elimination, while maintaining the excellent convergence characteristics of the overall algorithm. Simulations of a high recycling divertor and a gaseous divertor on the DIII-D tokamak geometry are used to demonstrate algorithm performance. (C) 1995 Academic Press. Inc. RP KNOLL, DA (reprint author), IDAHO NATL ENGN LAB,COMPUTAT FLUID DYNAM UNIT,IDAHO FALLS,ID 83415, USA. NR 49 TC 17 Z9 17 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD FEB PY 1995 VL 116 IS 2 BP 281 EP 291 DI 10.1006/jcph.1995.1027 PG 11 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA QG793 UT WOS:A1995QG79300007 ER PT J AU RAMSHAW, JD CHANG, CH AF RAMSHAW, JD CHANG, CH TI ITERATION SCHEME FOR IMPLICIT CALCULATIONS OF KINETIC AND EQUILIBRIUM CHEMICAL-REACTIONS IN FLUID-DYNAMICS SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID FLOW AB An iteration scheme for the implicit treatment of equilibrium chemical reactions in partial equilibrium flow has previously been described (J. D. Ramshaw and A. A. Amsden, J. Comput. Phys. 59, 484 (1985); 71, 224 (1987)). Here we generalize this scheme to kinetic reactions as well as equilibrium reactions. This extends the applicability of the scheme to problems with kinetic reactions that are fast in some regions of the flow field but slow in others. The resulting scheme thereby provides a single unified framework for the implicit treatment of an arbitrary number of coupled equilibrium and kinetic reactions in chemically reacting fluid flow. (C) 1995 Academic Press, Inc. RP RAMSHAW, JD (reprint author), IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 11 TC 12 Z9 12 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD FEB PY 1995 VL 116 IS 2 BP 359 EP 364 DI 10.1006/jcph.1995.1033 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA QG793 UT WOS:A1995QG79300013 ER PT J AU VU, HX BRACKBILL, JU AF VU, HX BRACKBILL, JU TI ACCURATE NUMERICAL-SOLUTION OF CHARGED-PARTICLE MOTION IN A MAGNETIC-FIELD SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Note RP VU, HX (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 4 TC 11 Z9 11 U1 1 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD FEB PY 1995 VL 116 IS 2 BP 384 EP 387 DI 10.1006/jcph.1995.1037 PG 4 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA QG793 UT WOS:A1995QG79300017 ER PT J AU JACOBSON, AR CARLOS, RC MASSEY, RS WU, GH AF JACOBSON, AR CARLOS, RC MASSEY, RS WU, GH TI OBSERVATIONS OF TRAVELING IONOSPHERIC DISTURBANCES WITH A SATELLITE-BEACON RADIO INTERFEROMETER - SEASONAL AND LOCAL TIME BEHAVIOR SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID ATMOSPHERIC GRAVITY-WAVES; ELECTRON CONTENT; MID-LATITUDES; F-REGION; SCALE; WINDS; THERMOSPHERE; DISPERSION; MODEL; ARRAY AB We have operated a very long baseline interferometer array at a northern midlatitude site, illuminated by VHF radio beacons from two geosynchronous satellites, quasi-continuously for over a year. The array can detect and measure the trace velocity of traveling ionospheric disturbances (TIDs) via their signatures in the line-of-sight total electron content (TEC). The system noise level is of the order of 10(13) m(-2) in the TEC, so that even very weak perturbations can be studied. We have used the year-long TID detection/velocimetry data set to describe local time and seasonal dependences of the wave parameters. The most striking finding is that the preferred azimuths of TIDs in the data set tend to belong to either of two modes: The first mode, strongest at midday and in the early afternoon, particularly around winter equinox, propagates southward. The second mode, strongest in the evening, especially during summer solstice through autumn equinox, propagates west-northwestward. The two modes are disposed in local time such as to suggest the agency of clockwise rotation of the TID preferred azimuths versus time, as expected by wind filtering in the thermospheric diurnal tide. However, there is a gap between the two modes' azimuth bands. Moreover, the two modes exist in all trace-speed quartiles of the data set TIDs, a finding which is at variance with the hypothesis of wind filtering being the primary explanation of these modes. RP JACOBSON, AR (reprint author), LOS ALAMOS NATL LAB,SPACE & ATMOSPHER SCI GRP,MAIL STOP D466,LOS ALAMOS,NM 87545, USA. NR 28 TC 60 Z9 60 U1 1 U2 6 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD FEB 1 PY 1995 VL 100 IS A2 BP 1653 EP 1665 DI 10.1029/94JA02663 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QH751 UT WOS:A1995QH75100007 ER PT J AU ELPHIC, RC ONSAGER, TG THOMSEN, MF GOSLING, JT AF ELPHIC, RC ONSAGER, TG THOMSEN, MF GOSLING, JT TI NATURE AND LOCATION OF THE SOURCE OF PLASMA SHEET BOUNDARY-LAYER ION-BEAMS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID GEOMAGNETIC TAIL; ELECTROMAGNETIC INSTABILITIES; SUBSTORM RECOVERY; NEUTRAL LINE; DISTRIBUTIONS; MAGNETOPAUSE; RECONNECTION; FIELD; DYNAMICS; ELECTRON AB Onsager et al. (1991) have put forward a model of the formation of the plasma sheet boundary layer which relies on a steady source of plasma from a spatially extended plasma sheet, together with steady equatorward and earthward ExB convection of field lines due to reconnection at a downtail neutral line. This model is a synthesis of earlier proposals and it explains such features as an electron layer exterior to the ion boundary layer, ion velocity dispersion, counter streaming beams, low-speed cutoffs in the beams. It also explains the apparent evolution of the ion beams through ''kidney bean'' shaped velocity-space distributions toward quasi-isotropic shells without invoking pitch angle scattering or energy diffusion. In this paper we explore two ramifications of the model: (1) low-speed cutoffs observed in the ion distribution functions contain information about the distance to the neutral line downtail and (2) values of Phase space density at the low-speed cutoffs arl the same as those in the distribution just earthward of the reconnection site. In principle we can map, as a function of time, the downtail neutral line distance and establish whether or not it is retreating during substorm recovery. We can also reconstruct the plasma distribution function near the neutral line to see if it is most consistent with mantle or plasma sheet plasma. We perform this analysis using ISEE Fast Plasma Experiment data for two plasma sheet recovery events, one on March 1, 1978, and the other on April 18, 1978. On March 1, 1978, we find evidence for an initial retreat from around 110 to 160 R(E) in the first 15 min; little further retreat occurs thereafter. On April 18, 1978, the neutral line location ranges from as little as 40 R(E) tailward of the satellite to as much as 200 R(E), but there is no evidence for a systematic retreat. The reconstructed ion distributions for these events are most consistent with a plasma sheet origin for the March 1 case and possibly plasma mantle or low-latitude boundary layer for the April 18 case. C1 UNIV NEW HAMPSHIRE,CTR SPACE SCI,DURHAM,NH 03824. RP ELPHIC, RC (reprint author), LOS ALAMOS NATL LAB,SPACE & ATMOSPHER SCI GRP,MS D466,LOS ALAMOS,NM 87545, USA. NR 25 TC 21 Z9 21 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD FEB 1 PY 1995 VL 100 IS A2 BP 1857 EP 1869 DI 10.1029/94JA02419 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QH751 UT WOS:A1995QH75100027 ER PT J AU XU, X GRIGOROPOULOS, CP RUSSO, RE AF XU, X GRIGOROPOULOS, CP RUSSO, RE TI TRANSIENT TEMPERATURE DURING PULSED EXCIMER-LASER HEATING OF THIN POLYSILICON FILMS OBTAINED BY OPTICAL REFLECTIVITY MEASUREMENT SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Article DE LASER PROCESSING; MATERIALS PROCESSING, AND MANUFACTURING PROCESSES; RADIATION ID POLYCRYSTALLINE SILICON; ELEVATED-TEMPERATURES; IRRADIATION AB The transient reflectivity of a continuous wave (CW) HeNe laser was measured during the pulsed excimer laser heating of thin polysilicon films at the nanosecond time scale. Polysilicon films with thicknesses from 0.1 to 0.4 mu m were deposited by Low-Pressure Chemical Vapor Deposition (LPCVD) on thermally oxidized crystalline silicon wafers. The complex refractive index of these films at the HeNe laser wavelength (lambda(probe) = 0.6328 mu m) was measured in the temperature range from 300 K to approximately 1400 K by combined ellipsometric and normal incidence reflectivity measurements. Numerical heat transfer and optical reflectivity analysis based on the measured optical properties of polysilicon films were conducted. The calculated reflectivity histories were compared with the experimental results to reveal the transient temperature field. C1 UNIV CALIF BERKELEY,DEPT MECH ENGN,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV ENERGY & ENVIRONM,BERKELEY,CA 94720. NR 27 TC 20 Z9 20 U1 0 U2 4 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0022-1481 J9 J HEAT TRANS-T ASME JI J. Heat Transf.-Trans. ASME PD FEB PY 1995 VL 117 IS 1 BP 17 EP 24 DI 10.1115/1.2822301 PG 8 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA QK777 UT WOS:A1995QK77700002 ER PT J AU BIELICKI, JK MCCALL, MR VANDENBERG, JJM KUYPERS, FA FORTE, TM AF BIELICKI, JK MCCALL, MR VANDENBERG, JJM KUYPERS, FA FORTE, TM TI COPPER AND GAS-PHASE CIGARETTE-SMOKE INHIBIT PLASMA LECITHIN-CHOLESTEROL ACYLTRANSFERASE ACTIVITY BY DIFFERENT MECHANISMS SO JOURNAL OF LIPID RESEARCH LA English DT Article DE LCAT INHIBITION AND HDL CROSS-LINKING ID LOW-DENSITY-LIPOPROTEIN; APOLIPOPROTEIN-A-I; CORONARY-ARTERY DISEASE; LIPID-PEROXIDATION; VITAMIN-E; ESTER ACCUMULATION; ASCORBIC-ACID; FATTY-ACIDS; MACROPHAGES; PROTEIN AB Cigarette smokers have reduced levels of plasma high density lipoprotein (HDL) compared to nonsmokers and are at risk of premature cardiovascular disease. Previous work from this laboratory has shown that exposure of human plasma to gas phase cigarette smoke (CS) inhibited the activity of lecithin:cholesterol acyltransferase (LCAT), the enzyme that catalyzes the formation of cholesteryl ester in HDL and thereby promotes HDL maturation. As CS contains free radicals that could potentially oxidize plasma lipoproteins, we examined the involvement of lipid peroxidation in LCAT inhibition. Results obtained with CS were compared with those obtained by initiating lipid peroxidation with copper ions. Exposure of dialyzed human plasma to an equivalent of one-eighth of a cigarette at 15-min intervals resulted in a progressive loss of LCAT activity (50 and 90% reductions by 1 and 6 h, respectively). A similar pattern of LCAT inhibition was produced with copper (0.5 mM) where 50 and 97% reductions were observed at 1 and 6 h, respectively. To determine whether LCAT inhibition was related to lipid peroxidation, lipoprotein fractions corresponding to VLDL-IDL, LDL, and HDL were isolated from plasma exposed to CS or copper and analyzed for changes in TBARS, the polyunsatu rated fatty acid arachidonate relative to palmitate (20:4/16:0 ratio), and vitamin E concentrations. Exposure of plasma for 6 h to CS had no effect on the levels of TBARS and 20:4/16:0 ratio; however, 6 h copper treatment (0.5 mM) caused a 3.0-, 4.0-, and 1.4-fold increase in TBARS and a 17, 25, and 13% reduction in the 20:4/16:0 ratio in VLDL-IDL, LDL, and HDL fractions, respectively. In addition, a complete depletion of lipoprotein vitamin E was observed with CS, whereas copper decreased vitamin E levels by approximately 50% in each fraction. Supplementation of plasma with either vitamin C (85 mu M) or butylated hydroxytoluene (BHT, 0.45 mM) was unable to protect LCAT from CS. In contrast, BHT completely protected LCAT activity from inhibition by copper. We conclude that unlike copper, CS-induced inhibition of plasma LCAT activity was unrelated to free radical-induced lipid peroxidation. The inhibition of LCAT activity by cigarette smoke may contribute to the development of atherosclerosis by impairing HDL metabolism and the reverse cholesterol transport process., C1 CHILDRENS HOSP,RES INST,OAKLAND,CA 94609. RP BIELICKI, JK (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DEPT MOLEC & NUCL MED,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. FU NHLBI NIH HHS [HL07279, HL18574]; NIDDK NIH HHS [DK32094] NR 47 TC 26 Z9 26 U1 0 U2 0 PU LIPID RESEARCH INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0022-2275 J9 J LIPID RES JI J. Lipid Res. PD FEB PY 1995 VL 36 IS 2 BP 322 EP 331 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA QH014 UT WOS:A1995QH01400012 PM 7751820 ER PT J AU BRISSON, JG SWIFT, GW AF BRISSON, JG SWIFT, GW TI HIGH-TEMPERATURE COOLING POWER OF THE SUPERFLUID STIRLING REFRIGERATOR SO JOURNAL OF LOW TEMPERATURE PHYSICS LA English DT Article AB Above 1 Kelvin, the measured cooling power of the superfluid Stirling refrigerator is significantly greater than would be expected simply from a classical ideal gas of He-3 quasiparticles. Analysis shows that this increased cooling power is due to the presence of the He-4 excitations. C1 LOS ALAMOS NATL LAB,CONDENSED MATTER & THERMAL PHYS GRP K764,LOS ALAMOS,NM 87545. NR 20 TC 2 Z9 2 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0022-2291 J9 J LOW TEMP PHYS JI J. Low Temp. Phys. PD FEB PY 1995 VL 98 IS 3-4 BP 141 EP 157 DI 10.1007/BF00753610 PG 17 WC Physics, Applied; Physics, Condensed Matter SC Physics GA QF568 UT WOS:A1995QF56800001 ER PT J AU DOBRZYNSKI, L PAPOULAR, RJ SAKATA, M AF DOBRZYNSKI, L PAPOULAR, RJ SAKATA, M TI RECONSTRUCTION OF INTERNAL MAGNETIZATION DENSITY DISTRIBUTIONS OF IRON AND NICKEL BY THE MAXIMUM-ENTROPY METHOD SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID NEUTRON-DIFFRACTION DATA AB The results of reanalysis of magnetic form factors of iron and nickel are presented. It is shown that one can reconstruct the magnetization density distributions in these metals with the strictly positive values only. If one allows for the negative magnetization, it appears in rather well localized portions of the unit cell. C1 WARSAW UNIV BRANCH,INST PHYS,PL-15424 BIALYSTOK,POLAND. BROOKHAVEN NATL LAB,DEPT PHYS,NEW YORK,NY 11973. CENS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE. NAGOYA UNIV,DEPT APPL PHYS,NAGOYA,AICHI,JAPAN. RP DOBRZYNSKI, L (reprint author), INST ENERGITEKNIKK,POB 40,N-2007 KJELLER,NORWAY. NR 13 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 53 EP 54 DI 10.1016/0304-8853(94)01134-6 PN 1 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QL736 UT WOS:A1995QL73600019 ER PT J AU MOTOYA, K KUBOTA, S SHAPIRO, SM AF MOTOYA, K KUBOTA, S SHAPIRO, SM TI MAGNETIC CORRELATION AND EXCITATION OF CONCENTRATED METALLIC SPIN-GLASSES SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID NEUTRON-SCATTERING; ALLOY AB Magnetic correlation and excitation of Fe-65(Ni1-xMnx)(35), Cu-2(Mn1-xTix)Al and Ni1-xMnx alloys have been investigated by neutron scattering experiments. The magnetic correlation length and its temperature variation differ considerably among these materials. We point out that the static and dynamic characters of concentrated metallic spin-glasses are closely related to the itinerant character of magnetic electrons. C1 SAITAMA UNIV,DEPT PHYS,URAWA,SAITAMA 338,JAPAN. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP MOTOYA, K (reprint author), SCI UNIV TOKYO,FAC SCI & TECHNOL,DEPT PHYS,NODA,CHIBA 278,JAPAN. NR 6 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 75 EP 76 DI 10.1016/0304-8853(94)01070-6 PN 1 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QL736 UT WOS:A1995QL73600030 ER PT J AU CABLE, JW TSUNODA, Y AF CABLE, JW TSUNODA, Y TI MAGNETIC-MOMENTS AND SHORT-RANGE ORDER IN COMN AND NIMN ALLOYS SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID MANGANESE AB Neutron diffuse scattering measurements were made on CoMn and NiMn alloys to characterize the magnetic short-range order and to determine the sublattice moments. The CoMn alloys have average sublattice moments three times smaller than the NiMn alloys. This is attributed to a moment-volume instability for the Mn atom. C1 OSAKA UNIV,TOYONAKA,OSAKA 450,JAPAN. RP CABLE, JW (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 8 TC 4 Z9 4 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 93 EP 94 DI 10.1016/0304-8853(94)01137-0 PN 1 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QL736 UT WOS:A1995QL73600039 ER PT J AU WANG, DS WU, RQ ZHONG, LP FREEMAN, AJ AF WANG, DS WU, RQ ZHONG, LP FREEMAN, AJ TI FIRST PRINCIPLES DETERMINATION OF SPIN-ORBIT INDUCED PHENOMENA AT SURFACES, INTERFACES AND SUPERLATTICES - MAGNETOCRYSTALLINE ANISOTROPY AND MAGNETIC CIRCULAR-DICHROISM SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID ENERGY; CO AB Two spin-orbit coupling induced effects, namely magnetocrystalline anisotropy (MCA) and magnetic circular dichroism (MCD) have been investigated using the first principles full potential linearized augmented plane wave method. For MCA, the stable results obtained through our newly developed state tracking approach for free standing Fe and Co monolayers, Co-Cu and Co-Pd interfaces acid Co-Cu superlattices can be related and explained in terms of more fundamental electronic properties such as bonding character and band structure. From the directly calculated MCD spectra and ground state properties (e.g., spin and orbital magnetic moments), we found that the MCD orbital sum rule works well for transition metal systems, while its spin counterpart may result in significant errors. C1 ACAD SINICA,INST PHYS,BEIJING 100080,PEOPLES R CHINA. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP WANG, DS (reprint author), NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208, USA. RI Wu, Ruqian/C-1395-2013 OI Wu, Ruqian/0000-0002-6156-7874 NR 22 TC 5 Z9 5 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 643 EP 646 DI 10.1016/0304-8853(94)00596-6 PN 1 PG 4 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QL736 UT WOS:A1995QL73600308 ER PT J AU GRUBEL, G ALSNIELSEN, J VETTIER, C GIBBS, D BOHR, J PENGRA, D AF GRUBEL, G ALSNIELSEN, J VETTIER, C GIBBS, D BOHR, J PENGRA, D TI RESONANT MAGNETIC SCATTERING IN HOLMIUM AT AN UNDULATOR SOURCE SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID RAY CIRCULAR-DICHROISM; POLARIZATION AB The resonance properties of the magnetic cross-section of antiferromagnetic holmium were studied at the L absorption edges. A polarization analysis of the magnetic cross-section was performed at the L(III) and L(II) edges using pi polarized incident X-rays. C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RISO NATL LAB,DEPT PHYS,DK-4000 ROSKILDE,DENMARK. UNIV MASSACHUSETTS,DEPT PHYS,AMHERST,MA 01993. RP GRUBEL, G (reprint author), EUROPEAN SYNCHROTRON RADIAT FACIL,BP 220,F-38043 GRENOBLE,FRANCE. RI Bohr, Jakob/A-5819-2012 OI Bohr, Jakob/0000-0003-4076-2045 NR 6 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 755 EP 756 DI 10.1016/0304-8853(94)00754-3 PN 2 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400010 ER PT J AU MCMORROW, DF SIMPSON, JA COWLEY, RA JEHAN, DA WARD, RCC WELLS, MR THURSTON, TR GIBBS, D AF MCMORROW, DF SIMPSON, JA COWLEY, RA JEHAN, DA WARD, RCC WELLS, MR THURSTON, TR GIBBS, D TI THE MAGNETIC-STRUCTURE OF HOLMIUM/ERBIUM SUPERLATTICES SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS AB The effect of competing crystal-field anisotropies on magnetic order has been investigated in a series of Ho/Er superlattices using neutron and resonant X-ray magnetic diffraction techniques. The neutron diffraction reveals that for temperatures in the interval T-N(Er) less than or equal to T less than or equal to T-N(Ho) the Ho basal-plane order propagates coherently through the paramagnetic Er, and that below T-N(Er) the longitudinal component of the Er moments fail to order across the Ho block. The magnetic superlattice peaks observed in the X-ray scattering display an anomalous energy dependence: a sharp resonance is found at L(III)(Ho), with no resonance visible at L(III)(Er). These results are discussed with reference to models of exchange in metallic superlattices. C1 UNIV OXFORD,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP MCMORROW, DF (reprint author), RISO NATL LAB,DK-4000 ROSKILDE,DENMARK. RI McMorrow, Desmond/C-2655-2008 OI McMorrow, Desmond/0000-0002-4947-7788 NR 12 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 779 EP 782 DI 10.1016/0304-8853(94)01312-8 PN 2 PG 4 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400022 ER PT J AU ANTROPOV, VP LIECHTENSTEIN, AI HARMON, BN AF ANTROPOV, VP LIECHTENSTEIN, AI HARMON, BN TI ELECTRONIC-STRUCTURE AND MAGNETOOPTICAL PROPERTIES OF CESB AND GD SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID GADOLINIUM AB The electronic structure of gadolinium metal and CeSb have been calculated using a density functional method which explicitly includes the Coulomb parameter U for the 4f-electrons. The calculated density of states, total energies, Fermi surface, and magneto-optical properties are in better agreement with experiment than those obtained with the standard local density technique. C1 MAX PLANCK INST FESTKORPERFORSCH, D-70506 STUTTGART, GERMANY. RP ANTROPOV, VP (reprint author), IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50010 USA. RI Lichtenstein, Alexander/K-8730-2012 OI Lichtenstein, Alexander/0000-0003-0152-7122 NR 17 TC 9 Z9 9 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1161 EP 1162 DI 10.1016/0304-8853(94)01294-6 PN 2 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400208 ER PT J AU LANDER, GH STIRLING, WG LANGRIDGE, S GIBBS, D AF LANDER, GH STIRLING, WG LANGRIDGE, S GIBBS, D TI RESONANT X-RAY-SCATTERING IN 5F MAGNETISM SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID EXCHANGE SCATTERING; RANGE ORDER; HOLMIUM; POLARIZATION; DIFFRACTION; ABSORPTION; ARSENIDE; NEUTRON; EDGES; IRON AB Large enhancements of the magnetic cross section of photons occurs when the energy is tuned near to an absorption edge. Examples of this effect in the actinides at the M(IV) edge are presented. The excellent resolution available with X-ray synchrotron beams has allowed new features in both the magnetic structure and the critical regime to be determined. The technique is also sensitive to the near-surface region. Some of the possibilities with the new 3rd-generation synchrotrons will be discussed. C1 UNIV KEELE,DEPT PHYS,KEELE ST5 5BG,STAFFS,ENGLAND. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP LANDER, GH (reprint author), INST TRANSURANIUM ELEMENTS,JRC,POSTFACH 2340,D-76125 KARLSRUHE,GERMANY. OI Langridge, Sean/0000-0003-1104-0772 NR 41 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1349 EP 1352 DI 10.1016/0304-8853(94)00569-9 PN 2 PG 4 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400300 ER PT J AU HJELM, A TRYGG, J ERIKSSON, O JOHANSSON, B WILLS, JM AF HJELM, A TRYGG, J ERIKSSON, O JOHANSSON, B WILLS, JM TI FIELD-INDUCED MAGNETISM IN ACTINIDE SYSTEMS SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID MAGNETIZATION DENSITY; BAND; ENERGIES AB We demonstrate that the field-induced spin and orbital moments in paramagnetic metals in general are parallel, regardless of the filling of the electronic shell. The early actinides, however, approach the border where the moments go antiparallel. This results in peculiar magnetic states for alpha-Pu and some uranium compounds, where the spin moments are antiparallel to the applied field and the magnetic response is dominated by the orbital contribution, and consequently these systems display unusual spin densities and magnetic form factors. C1 UNIV UPPSALA,DEPT PHYS,CONDENSED MATTER THEORY GRP,S-75121 UPPSALA,SWEDEN. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87544. RP HJELM, A (reprint author), UNIV UPPSALA,DEPT TECHNOL,BOX 530,S-75121 UPPSALA,SWEDEN. RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 26 TC 1 Z9 1 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1353 EP 1354 DI 10.1016/0304-8853(94)00885-X PN 2 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400301 ER PT J AU ANTROPOV, VP VANSCHILFGAARDE, M HARMON, BN AF ANTROPOV, VP VANSCHILFGAARDE, M HARMON, BN TI MAGNETIC PHASE-STABILITY OF 3D-METALS AND PLUTONIUM SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID IRON AB We have performed self-consistent spin-polarized calculations for the magnetic structure and exchange parameters of pure 3d-metals and Pu. Local field effects and the strength of non-Heisenberg interactions are estimated. For alpha-Mn and alpha-Pu antiferromagnetic structures are dominant, and a complexe magnetic ordering was found for the low temperature structures. An analytical expression for the magnetic torque and a non-collinear low energy magnetic state of gamma-Fe are presented. C1 SRI INT,MENLO PK,CA 94025. RP ANTROPOV, VP (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. NR 7 TC 21 Z9 21 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1355 EP 1356 DI 10.1016/0304-8853(94)00887-6 PN 2 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400302 ER PT J AU HAVELA, L SECHOVSKY, V SVOBODA, P NAKOTTE, H PROKES, K DEBOER, FR SERET, A WINAND, JM REBIZANT, J SPIRLET, JC PURWANTO, A ROBINSON, RA AF HAVELA, L SECHOVSKY, V SVOBODA, P NAKOTTE, H PROKES, K DEBOER, FR SERET, A WINAND, JM REBIZANT, J SPIRLET, JC PURWANTO, A ROBINSON, RA TI MAGNETISM IN U(2)T(2)X COMPOUNDS SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID TERNARY AB Magnetic and other electronic properties are presented for the U(2)T(2)X compounds (T = late transition metal, X = Sn or In), that crystallize in the tetragonal U3Si2-type structure. They show the formation of 5f magnetic moments and antiferromagnetic ordering in compounds where weak 5f-d hybridization is expected. Near the onset of magnetic ordering strongly enhanced gamma-values are found. Neutron-diffraction experiments on U2Pd2Sn and U2Pd2In point to a connection between the mutual coordination of U atoms and the type of magnetic anisotropy. C1 UNIV AMSTERDAM,VAN DER WAALS ZEEMAN LAB,1018 XE AMSTERDAM,NETHERLANDS. INST TRANSURANIUM ELEMENTS,JOINT RES CTR,D-76125 KARLSRUHE,GERMANY. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP HAVELA, L (reprint author), CHARLES UNIV,KE KARLOVU 5,CR-12116 PRAGUE 2,CZECH REPUBLIC. RI Sechovsky, Vladimir/A-5256-2008 OI Sechovsky, Vladimir/0000-0003-1298-2120 NR 3 TC 45 Z9 45 U1 0 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1367 EP 1368 DI 10.1016/0304-8853(94)00934-1 PN 2 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400308 ER PT J AU SECHOVSKY, V HAVELA, L SVOBODA, P ANDREEV, AV BURLET, P PROKES, K NAKOTTE, H DEBOER, FR BRUCK, E ROBINSON, RA MALETTA, H AF SECHOVSKY, V HAVELA, L SVOBODA, P ANDREEV, AV BURLET, P PROKES, K NAKOTTE, H DEBOER, FR BRUCK, E ROBINSON, RA MALETTA, H TI MAGNETIC PHASE-DIAGRAM OF UNIGA SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS AB We present a complex magnetic phase diagram of UNiGa with several antiferromagnetic (AF) phases below T-N = 39.5 K. A relatively low magnetic field (similar to 1 T) applied along the c-axis induces a transition from the AF phases to an uncompensated AF and/or a ferromagnetic (F) phase. All the magnetic structures are collinear (mu(U) parallel to c) and consist of ferromagnetic basal-plane sheets with various coupling along c. C1 URAL STATE UNIV,SVERDLOVSK 620083,RUSSIA. CEN,F-38041 GRENOBLE,FRANCE. UNIV AMSTERDAM,VAN DER WAALS ZEEMAN LAB,1018 XE AMSTERDAM,NETHERLANDS. LOS ALAMOS NATL LAB,LOS ALAMOS NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545. HAHN MEITNER INST BERLIN GMBH,BENSC,D-14109 BERLIN,GERMANY. RP SECHOVSKY, V (reprint author), CHARLES UNIV,DEPT MET PHYS,KE KARLOVU 5,CR-12116 PRAGUE 2,CZECH REPUBLIC. RI Andreev, Alexander/B-6057-2011; Bruck, Ekkes/E-3365-2014; Sechovsky, Vladimir/A-5256-2008 OI Sechovsky, Vladimir/0000-0003-1298-2120 NR 5 TC 16 Z9 16 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1379 EP 1380 DI 10.1016/0304-8853(94)00601-6 PN 2 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400314 ER PT J AU BERNHOEFT, N STUNAULT, A VETTIER, C DEBERGEVIN, F GIBBS, D THURSTON, TR SHAPIRO, SM HASTINGS, JB DALMAS, P HELGESEN, G VOGT, O AF BERNHOEFT, N STUNAULT, A VETTIER, C DEBERGEVIN, F GIBBS, D THURSTON, TR SHAPIRO, SM HASTINGS, JB DALMAS, P HELGESEN, G VOGT, O TI ANTIFERROMAGNETIC LAYER FORMATION IN UAS SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS AB Resonant magnetic X-ray scattering from UAs using the M(iv) uranium absorption edge allows a detailed examination of the first order antiferromagnetic phase transition occuring at 122 K which appears to proceed via the formation of antiferromagnetically coupled surface layers. C1 CNRS,CRISTALLOG LAB,F-38042 GRENOBLE,FRANCE. BROOKHAVEN NATL LAB,UPTON,NY 11973. CEA,F-38042 GRENOBLE,FRANCE. INST ENERGITEKNIKK,N-2007 KJELLER,NORWAY. ETH ZURICH,CH-8093 ZURICH,SWITZERLAND. RP BERNHOEFT, N (reprint author), EUROPEAN SYNCHROTRON RADIAT FACIL,BP 220,F-38043 GRENOBLE,FRANCE. NR 5 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1421 EP 1422 DI 10.1016/0304-8853(94)01378-0 PN 2 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM074 UT WOS:A1995QM07400334 ER PT J AU BELANGER, DP WANG, J SLANIC, Z HAN, SJ NICKLOW, RM LUI, M RAMOS, CA LEDERMAN, D AF BELANGER, DP WANG, J SLANIC, Z HAN, SJ NICKLOW, RM LUI, M RAMOS, CA LEDERMAN, D TI NEUTRON-SCATTERING STUDY OF THE RANDOM-FIELD ISING FILM FE0.5ZN0.5F2 SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID MODEL AB The extinction-free neutron scattering for a 3.4 mu m epitaxial film of the dilute antiferromagnet Fe0.5Zn0.5F2 has been studied near the (100) magnetic Bragg point. For the H = 0 Bragg scattering we observe the random-exchange Ising model behavior I similar to \t\(2 beta) with beta = 0.35. For 0 < H < = 4.5 T the random-field Ising peak intensity vs. T has the opposite curvature from the H = 0 case near T-c(H). C1 OAK RIDGE NATL LAB,OAK RIDGE,TN. HUGHES RES LABS,MALIBU,CA 90265. CTR ATOM BARILOCHE,RA-8400 BARILOCHE,RIO NEGRO,ARGENTINA. UNIV CALIF SAN DIEGO,SAN DIEGO,CA 92103. RP BELANGER, DP (reprint author), UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064, USA. NR 7 TC 12 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1549 EP 1550 DI 10.1016/0304-8853(94)01353-5 PN 3 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM730 UT WOS:A1995QM73000040 ER PT J AU PARAKKA, A JILES, DC AF PARAKKA, A JILES, DC TI MAGNEPROBE - A PORTABLE SYSTEM FOR NONDESTRUCTIVE TESTING OF FERROMAGNETIC MATERIALS SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS AB Magnetic Barkhausen effect emissions have been demonstrated to be very sensitive in the detection of surface stress patterns and microstructural changes. A portable computer controlled instrumentation system to detect and analyze Barkhausen emissions from different depths in the materials has been developed. The software for the system features a number of processing techniques, including pulse height analysis, RMS averaging and Fourier transforms for characterizing the detected signal. RP PARAKKA, A (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. RI Jiles, David/H-9548-2012 NR 10 TC 11 Z9 11 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1841 EP 1842 DI 10.1016/0304-8853(94)00857-4 PN 3 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM730 UT WOS:A1995QM73000178 ER PT J AU JILES, DC DEVINE, MK AF JILES, DC DEVINE, MK TI THE LAW OF APPROACH AS A MEANS OF MODELING THE MAGNETOMECHANICAL EFFECT SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Article; Proceedings Paper CT International Conference on Magnetism - ICM 94 (13th IUPAP Triennial Conference on Magnetism) CY AUG 22-26, 1994 CL WARSAW, POLAND SP INT UNION PURE & APPL PHYS ID FERROMAGNETIC HYSTERESIS AB This study is concerned with the development of a model theory of the changes in magnetization that a ferromagnetic material undergoes when subjected to a varying external applied stress. RP JILES, DC (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. RI Jiles, David/H-9548-2012 NR 11 TC 16 Z9 16 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD FEB PY 1995 VL 140 BP 1881 EP 1882 DI 10.1016/0304-8853(94)00928-7 PN 3 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA QM730 UT WOS:A1995QM73000198 ER PT J AU LOO, RRO SMITH, RD AF LOO, RRO SMITH, RD TI PROTON-TRANSFER REACTIONS OF MULTIPLY-CHARGED PEPTIDE AND PROTEIN CATIONS AND ANIONS SO JOURNAL OF MASS SPECTROMETRY LA English DT Article ID IONIZATION MASS-SPECTROMETRY; ION MOLECULE REACTIONS; INDUCED CONFORMATIONAL-CHANGES; ELECTROSPRAY-IONIZATION; ACTIVATED DISSOCIATION; SEQUENCE INFORMATION; CYTOCHROME-C; POLYPEPTIDES; BIOMOLECULES; AFFINITIES AB Two types of gas-phase proton transfer reactions were examined with electrospray ionization-generated peptide and protein ions; (i) bases reacting with multiply protonated molecules and (ii) acids reacting with multiply deprotonated molecules, For reactions of type (i) with bases spanning a range of proton affinities, the proton transfer reaction rate was observed to increase with increasing proton affinity of the charge transfer reagent, Proton transfer was not observed for the low proton affinity reagents (ethyl acetate, acetonitrile and water), These studies also qualitatively measured for the first time the temperature dependences for reactions with multiply charged peptides and proteins, Negative temperature dependences were observed for the weaker bases and positive dependences for the stronger bases, A negative temperature dependence was also observed in the reaction of propionic acid with [M - nH](n-) ions. Two hypotheses are proposed to explain the data, In the first, negative temperature dependences are attributed to slightly exothermic reactions, while the positive dependences may reflect contributions from a competing clustering pathway, a pathway which could be more dominant with the heavier reagents, Alternatively, the positive temperature dependences may reflect the barrier in the reaction coordinate arising from the repulsion of like-charged ions, while negative temperature dependences could reflect a cluster-mediated reaction in which charge delocalization lowers the barrier to proton transfer, In the latter cases, clustering is invoked with the fewer proton affinity reagents because of the higher concentrations employed. RP LOO, RRO (reprint author), PACIFIC NW LAB, DEPT CHEM SCI, CHEM METHODS & SEPARAT GRP, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 61 TC 42 Z9 42 U1 0 U2 4 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1076-5174 J9 J MASS SPECTROM JI J. Mass Spectrom. PD FEB PY 1995 VL 30 IS 2 BP 339 EP 347 DI 10.1002/jms.1190300217 PG 9 WC Biochemical Research Methods; Chemistry, Analytical; Spectroscopy SC Biochemistry & Molecular Biology; Chemistry; Spectroscopy GA QJ625 UT WOS:A1995QJ62500016 ER PT J AU BERGHAUS, DG MCCUE, JM PEACOCK, HB AF BERGHAUS, DG MCCUE, JM PEACOCK, HB TI COMPARISON OF EXTRUSION STRAINS PRODUCED BY COSINE AND CONICAL DIES SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article DE EXTRUSION; STRAIN; POWDER METALS ID 3-DIMENSIONAL EXTRUSION; SECTIONS AB Visioplastic analysis is used to compare strain fields produced in cylindrical aluminum billets extruded at elevated temperature through axially symmetric dies that have either a cosine or a conical profile, The visioplastic method consists of computing strain rates from changes experienced in a flow function as a billet passes through the extrusion die, The flow function is constructed using a grid that is stamped on an axial plane of the billet before extrusion, After the partially extruded billet is removed from the die, numerical methods are used to determine the str ain rates from the deformed grid, The state of strain over the extrusion region is computed using transformation and then integration of the strain rates, Results show that, unlike the conical die, the cosine die does not produce strains of reversed sign in the die entry region, The consequent benefits of using cosine dies for extrusion of powder metals are discussed. C1 SAVANNAH RIVER ECOL LAB,DEPT ENERGY,AIKEN,SC 29801. RP BERGHAUS, DG (reprint author), GEORGIA INST TECHNOL,COLL ENGN,SCH CIVIL ENGN,ENGN SCI & MECH PROGRAM,ATLANTA,GA 30332, USA. NR 13 TC 6 Z9 7 U1 1 U2 1 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 1059-9495 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD FEB PY 1995 VL 4 IS 1 BP 25 EP 31 DI 10.1007/BF02682701 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA RP474 UT WOS:A1995RP47400002 ER PT J AU KUMAR, SG REDDY, RG WU, J HOLTHUS, J AF KUMAR, SG REDDY, RG WU, J HOLTHUS, J TI EVALUATION OF MICROSTRUCTURE AND PHASE-RELATIONS IN A POWDER PROCESSED TI-44AL-12NB ALLOY SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article DE MICROSTRUCTURE; PHASE RELATIONS; POWDER METALLURGY; TITANIUM ALLOY ID TITANIUM ALUMINIDES; EVOLUTION AB Titanium aluminides based on the ordered face-centered tetragonal gamma TiAl phase possess attractive properties, such as low density, high melting point, good elevated temperature strength, modulus retention, and oxidation resistance, making these alloys potential high-temperature structural materials, These alloys can be processed by both ingot metallurgy and powder metallurgy routes, In the present study, three variations of the powder metallurgy route were studied to process a Ti-44Al-12Nb (at. %) alloy: (a) cold pressing followed by reaction sintering (CPprocess); (b) cold pressing, vacuum hot pressing, and then sintering (HP process); and (c) are melting, hydride-dehydride process to make the alloy powder; cold isostatic pressing, and then sintering (AM process), Microstructural and phase relations were studied by x-ray diffraction (XRD) analysis, optical microscopy, scanning electron microscopy with an energy-dispersive spectrometer (SEM-EDS), and electron probe microanalysis (EPMA), The phases identified were Ti3Al and TiAl; an additional Nb2Al phase was observed in the HP sample, The microstructures of CP and HP processed samples are porous and chemically inhomogeneous whereas the AM processed sample revealed fine equiaxed microstructure, This refinement of the microstructure is attributed to the fine, homogeneous powder produced by the hydride-dehydride process and the high compaction pressures. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP KUMAR, SG (reprint author), UNIV NEVADA,DEPT CHEM & MET ENGN,RENO,NV 89557, USA. NR 28 TC 12 Z9 12 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 1059-9495 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD FEB PY 1995 VL 4 IS 1 BP 63 EP 69 DI 10.1007/BF02682707 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA RP474 UT WOS:A1995RP47400008 ER PT J AU EWING, RC LUTZE, W WEBER, WJ AF EWING, RC LUTZE, W WEBER, WJ TI ZIRCON - A HOST-PHASE FOR THE DISPOSAL OF WEAPONS PLUTONIUM SO JOURNAL OF MATERIALS RESEARCH LA English DT Note ID DECAY EVENT DAMAGE; RADIATION-DAMAGE; LEAD RETENTION; NUCLEAR; CRYSTALLINE; THORITE; ZRSIO4; PB AB Zircon, ZrSiO4, is a well-characterized, naturally occurring phase that is extremely durable. Zircon has been synthesized with Pu-concentrations up to 10 wt. % and radiation-damage effects studied to saturation doses of nearly 0.8 displacements per atom. We propose that zircon be used as a waste form for the disposal of the more than 100 metric tons of plutonium that will result from the dismantling of nuclear weapons. There are already several demonstrated processing technologies, of which hot pressing offers the most potential. This highly durable material, even under hydrothermal conditions, with its high waste loading and smaller volume allows deep, permanent disposal of the weapons plutonium in geologic environments in which the borosilicate waste-form glass would not be stable. C1 UNIV NEW MEXICO, CTR RADIOACT WASTE MANAGEMENT, ALBUQUERQUE, NM 87131 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP EWING, RC (reprint author), UNIV NEW MEXICO, DEPT EARTH & PLANETARY SCI, ALBUQUERQUE, NM 87131 USA. RI Weber, William/A-4177-2008 OI Weber, William/0000-0002-9017-7365 NR 56 TC 216 Z9 218 U1 5 U2 21 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0884-2914 J9 J MATER RES JI J. Mater. Res. PD FEB PY 1995 VL 10 IS 2 BP 243 EP 246 DI 10.1557/JMR.1995.0243 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA QD444 UT WOS:A1995QD44400004 ER PT J AU SONG, XY CAO, WQ AYERS, MR HUNT, AJ AF SONG, XY CAO, WQ AYERS, MR HUNT, AJ TI CARBON NANOSTRUCTURES IN SILICA AEROGEL COMPOSITES SO JOURNAL OF MATERIALS RESEARCH LA English DT Note ID NANOTUBES; NANOPARTICLES; PENTAGONS; GROWTH AB A new method of preparing carbon nanotubes and their derivatives using silica aerogels a matrix for the deposition of carbon is repeated. We present results of observations of graphite tubes and rings including nested structures in nanometer dimensions using high resolution transmission electron microscopy. Furthermore, we propose a model for the growth of carbon nanotubes in three steps including nucleation, growth, and closure of tubes. C1 CHINESE ACAD SCI,SHANGHAI INST CERAM,NATL LAB FINE CERAM & STRUCT,SHANGHAI 200050,PEOPLES R CHINA. RP SONG, XY (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV ENERGY & ENVIRONM,BERKELEY,CA 94720, USA. NR 21 TC 12 Z9 12 U1 2 U2 8 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0884-2914 J9 J MATER RES JI J. Mater. Res. PD FEB PY 1995 VL 10 IS 2 BP 251 EP 254 DI 10.1557/JMR.1995.0251 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA QD444 UT WOS:A1995QD44400006 ER PT J AU SUGAMA, T TAKAHASHI, T AF SUGAMA, T TAKAHASHI, T TI SURFACE MODIFICATION OF ELECTROGALVANIZED STEELS BY ZINC PHOSPHATE CONVERSION COATINGS SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID COBALT; NICKEL AB When electrogalvanized steel (EGS) surfaces were treated by immersing them in a phosphating solution consisting of Zn-3(PO4)(2).4H(2)O, H3PO4, CO(NO3)(2).6H(2)O, poly(acrylic acid) (p(AA)) and water, the resulting electrochemical reaction led to the creation of short-circuited cells with cobalt acting as the cathode and the galvanized (zinc) coating as the anode. These cells accelerate the anodic dissolution of zinc, which then rapidly precipitates embryonic zinc phosphate tetrahydrate (hopeite) crystals on the EGS surfaces, resulting in their complete coverage with fully grown hopeite crystals after only 5 s immersion. The hopeite layers formed not only serve to protect the galvanized coatings against NaCl-induced corrosion, but also contribute significantly to improving adhesion to the polyurethane (PU) topcoating. The reasons for the latter improvement were due primarily to the following: (1) the interfacial chemical reaction between the p(AA) existing at the top surface of hopeite and the PU, and (2) the anchoring effects of the penetration of PU into the rough hopeite crystal layers. C1 ENVIRONM SCI INST HYOGO PREFECTURE,DEPT INORGAN MAT,SUMA KU,KOBE 654,JAPAN. RP SUGAMA, T (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,DIV ENERGY EFFICIENCY & CONSERVAT,UPTON,NY 11973, USA. NR 18 TC 9 Z9 9 U1 3 U2 6 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD FEB 1 PY 1995 VL 30 IS 3 BP 809 EP 823 DI 10.1007/BF00356346 PG 15 WC Materials Science, Multidisciplinary SC Materials Science GA QG988 UT WOS:A1995QG98800036 ER PT J AU KLUEH, RL ALEXANDER, DJ AF KLUEH, RL ALEXANDER, DJ TI EMBRITTLEMENT OF CR-MO STEELS AFTER LOW FLUENCE IRRADIATION IN HFIR SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article ID 12CR-1MOVW STEELS; IMPACT PROPERTIES; FERRITIC STEELS; MARTENSITIC STEELS; TENSILE PROPERTIES; NICKEL CONTENT; HEAT-TREATMENT; 9CR-1MOVNB; HELIUM; MICROSTRUCTURE AB Subsize Charpy impact specimens of 9Cr-1MoVNb (modified 9Cr-1Mo) and 12Cr-1MoVW (Sandvik HT9) steels and 12Cr-MoVW with 2% Ni (12Cr-1MoVW-2Ni) were irradiated in the High Flux Isotope Reactor (HFIR) at 300 and 400 degrees C to damage levels up to 2.5 dpa. The objective was to study the effect of the simultaneous formation of displacement damage and transmutation helium on impact toughness. Displacement damage was produced by fast neutrons, and helium was formed by the reaction of Ni-58 With thermal neutrons in the mixed-neutron spectrum of HFIR. Despite the low fluence relative to previous irradiations of these steels, significant increases in the ductile-brittle transition temperature (DBTT) occurred. The 12Cr-1MoVW-2Ni steel irradiated at 400 degrees C had the largest increase in DBTT and displayed indications of intergranular fracture. A mechanism is proposed to explain how helium can affect the fracture behavior of this latter steel in the present tests, and how it affected all three steels in previous experiments, where the steels were irradiated to higher fluences. RP KLUEH, RL (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 32 TC 47 Z9 49 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD FEB PY 1995 VL 218 IS 2 BP 151 EP 160 DI 10.1016/0022-3115(94)00521-4 PG 10 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA QJ344 UT WOS:A1995QJ34400007 ER PT J AU OHNUKI, S TAKAHASHI, H SHIBA, K HISHINUMA, A PAWEL, JE GARNER, FA AF OHNUKI, S TAKAHASHI, H SHIBA, K HISHINUMA, A PAWEL, JE GARNER, FA TI INFLUENCE OF TRANSMUTATION ON MICROSTRUCTURE, DENSITY CHANGE, AND EMBRITTLEMENT OF VANADIUM AND VANADIUM ALLOYS IRRADIATED IN HFIR SO JOURNAL OF NUCLEAR MATERIALS LA English DT Article ID NEUTRON; HELIUM; RATES; CR AB Addition of 1 at% nickel to vanadium and V-1OTi, followed by irradiation along with the nickel-free metals in HFIR to 2.3 x 10(26) n m(-2), E > 0.1 MeV (corresponding to 17.7 dpa) at 400 degrees C, has been used to study the influence of helium on microstructural evolution and embrittlement. Approximately 15.3% of the vanadium transmuted to chromium in these alloys. The similar to 50 appm helium generated from the Ni-58(n, gamma)Ni-59(n, alpha)Fe-56 sequence was found to exert much less influence than either the nickel directly or the chromium formed by transmutation. The V-1OTi and V-10Ti-1Ni alloys developed an extreme fragility and broke into smaller pieces in response to minor physical insults during density measurements. A similar behavior was not observed in pure V or V-1Ni. Helium's role in determination of mechanical properties and embrittlement of vanadium alloys in HFIR is overshadowed by the influence of alloying elements such as titanium and chromium. Both elements have been shown to increase the DBTT rather rapidly in the region of 10% (Cr + Ti). Since Cr is produced by transmutation of V, this is a possible mechanism for the embrittlement. Large effects on the DBTT may have also resulted from uncontrolled accumulation of interstitial elements such as C, N, and O during irradiation. C1 JAPAN ATOM ENERGY RES INST, TOKAI, IBARAKI, JAPAN. OAK RIDGE NATL LAB, OAK RIDGE, TN USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP OHNUKI, S (reprint author), HOKKAIDO UNIV, SAPPORO, HOKKAIDO, JAPAN. NR 23 TC 8 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3115 J9 J NUCL MATER JI J. Nucl. Mater. PD FEB PY 1995 VL 218 IS 2 BP 217 EP 223 DI 10.1016/0022-3115(94)00382-3 PG 7 WC Materials Science, Multidisciplinary; Nuclear Science & Technology SC Materials Science; Nuclear Science & Technology GA QJ344 UT WOS:A1995QJ34400014 ER PT J AU COXSON, PG BRENNAN, KM HUESMAN, RH LIM, S BUDINGER, TF AF COXSON, PG BRENNAN, KM HUESMAN, RH LIM, S BUDINGER, TF TI VARIABILITY AND REPRODUCIBILITY OF RB-82 KINETIC-PARAMETERS IN THE MYOCARDIUM OF THE ANESTHETIZED CANINE SO JOURNAL OF NUCLEAR MEDICINE LA English DT Article DE DYNAMIC PET; RB-82; KINETIC MODELS; MYOCARDIUM; DIPYRIDAMOLE STRESS ID POSITRON-EMISSION TOMOGRAPHY; CORONARY-ARTERY DISEASE; PERFUSION; RB-82 AB Kinetic analysis of Rb-82 dynamic PET data produces quantitative measures which could be used to evaluate ischemic heart disease. These measures have the potential to generate objective comparisons of different patients or the same patient at different times. To achieve this potential, it is essential to determine the variability and reproducibility of the kinetic parameters. Methods: A total of 48 Rb-82 dynamic PET datasets were acquired from two pure bred beagles. Each animal underwent eight Rb-82 PET studies with essentially the same protocol for three successive weeks. Data were acquired with the Donner 600-crystal Positron Tomograph (PET600). In each week, single-dice dynamic Rb-82 PRT datasets were collected with the animal at rest at three different gantry positions separated by 5 mm. Additional dataset were collected after dipyridamole infusion and after administration of aminophylline to induce a return to rest. A two-compartment kinetic model with correction for myocardial vasculature and spillover from the left ventricular blood pool was used to analyze the dynamic datasets. Model parameters for uptake (k(1)), washout (k(2)) and vascular fraction (f(v)) were estimated in 11-14 myocardial regions of interest (ROls) using a weighted least-squares criterion. Statistical fluctuation due to the PET acquisition process was minimized by using a relatively high Rb-82 dose (about 30 mCi) to take advantage of the high count rate capacity of the PET600. Results: The variation in mean k(1), where the mean is taken over the myocardial ROIs was 10%-20% (Dog 1) and 15%-50% (Dog 2) among the rest studies conducted on the same date. Similar variation was evident in comparing studies in the same animal for different weeks. Conclusion: Spatial and temporal variation in estimates of the uptake rate (k(1)) of Rb-82 in the resting myocardium of the anesthetized canine are small in relation to the functional increase in k(1) following dipyridamole infusion. RP COXSON, PG (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR FUNCT IMAGING,DIV LIFE SCI,MS 55-121,BERKELEY,CA 94720, USA. FU NHLBI NIH HHS [HL25840-12A1, HL47675-01] NR 17 TC 12 Z9 13 U1 0 U2 0 PU SOC NUCLEAR MEDICINE INC PI RESTON PA 1850 SAMUEL MORSE DR, RESTON, VA 22090-5316 SN 0161-5505 J9 J NUCL MED JI J. Nucl. Med. PD FEB PY 1995 VL 36 IS 2 BP 287 EP 296 PG 10 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA QE714 UT WOS:A1995QE71400030 PM 7830133 ER PT J AU MATSUMOTO, T LIU, HB BRUGGER, RM AF MATSUMOTO, T LIU, HB BRUGGER, RM TI DESIGN STUDIES OF AN EPITHERMAL NEUTRON BEAM FOR NEUTRON-CAPTURE THERAPY AT THE MUSASHI REACTOR SO JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY LA English DT Article DE EPITHERMAL NEUTRON BEAMS; BORON NEUTRON CAPTURE THERAPY; TRIGA-II-MUSASHI REACTOR; SPENT FUELS; FUEL ELEMENTS; CONVERTERS; ALUMINUM OXIDES; MONTE CARLO METHOD; FAST NEUTRONS; GAMMA RADIATION; RADIATION DOSES; CURRENT-TO-FLUX RATIO; CRITICALITY ID IRRADIATION FACILITY AB Studies were carried out to design an epithermal neutron beam for neutron capture therapy at the Musashi reactor, a TRIGA-II of 100 kW. The idea is this design to use spent fuel elements as a converter assembly to convert thermal neutrons from the core to fission neutrons which would then be moderated to epithermal neutrons. In the design, 43 elements were placed outside of the graphite reflector but inside the tank. These elements could be cooled by water in the reactor tank and also be easily removed for inspection. Monte Carlo computations indicated that by using a 63 cm-thick Al2O3 moderator, an epithermal neutron beam with an intensity of 0.34x10(9)n . cm(-2). s(-1) and fast neutron and gamma-doses per epithermal neutron of 4.3x10(-11) cGy . cm(2) . n(-1) and 0.3x10(-11) cGy . cm(2) . n(-1), respectively, could be produced. The multiplication factor of the 43 spent fuel elements was <0.95 and negligible reactivity coupling to the core by the spent fuel was calculated. Such an epithermal neutron beam, if built into the Musashi reactor, would significantly increase the chance of success of Boron Neutron Capture Therapy (BNCT) in Japan. C1 BROOKHAVEN NATL LAB, DEPT MED, UPTON, NY 11973 USA. RP MUSASHI INST TECHNOL, ATOM ENERGY RES LAB, ASAO KU, KAWASAKI, KANAGAWA 215, JAPAN. NR 22 TC 4 Z9 4 U1 0 U2 3 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0022-3131 EI 1881-1248 J9 J NUCL SCI TECHNOL JI J. Nucl. Sci. Technol. PD FEB PY 1995 VL 32 IS 2 BP 87 EP 94 DI 10.1080/18811248.1995.9731677 PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA QN873 UT WOS:A1995QN87300001 ER PT J AU BARNETT, M LITTLEFIELD, R PAYNE, DG VANDEGEIJN, R AF BARNETT, M LITTLEFIELD, R PAYNE, DG VANDEGEIJN, R TI GLOBAL COMBINE ALGORITHMS FOR 2-D MESHES WITH WORMHOLE ROUTING SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING LA English DT Article AB The problem of performing a global combine (summation) operation on a distributed memory computer using a two-dimensional mesh interconnect with wormhole routing is considered. We present algorithms that are asymptotically optimal for short vectors (O(log(p)) for p processing nodes) and for long vectors (O(n) for n data elements per node), as well as hybrid algorithms that are superior for intermediate n. The algorithms are analyzed using detailed performance models that include the effects of link conflicts and other characteristics of the underlying communication system. The models are validated using experimental data from the Intel Touchstone DELTA computer. We show that no one algorithm is optimal for all vector lengths; rather, each of the presented algorithms is superior under some circumstances. (C) 1995 Academic Press, Inc. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. INTEL CORP, DIV SUPERCOMP SYST, BEAVERTON, OR 97006 USA. UNIV TEXAS, DEPT COMP SCI, AUSTIN, TX 78112 USA. RP BARNETT, M (reprint author), UNIV IDAHO, DEPT COMP SCI, MOSCOW, ID 83843 USA. NR 12 TC 11 Z9 11 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0743-7315 J9 J PARALLEL DISTR COM JI J. Parallel Distrib. Comput. PD FEB 1 PY 1995 VL 24 IS 2 BP 191 EP 201 DI 10.1006/jpdc.1995.1018 PG 11 WC Computer Science, Theory & Methods SC Computer Science GA QF309 UT WOS:A1995QF30900007 ER PT J AU Lu, ZW Klein, BM Zunger, A AF Lu, ZW Klein, BM Zunger, A TI Ordering tendencies in Pd-Pt, Rh-Pt, and Ag-Au alloys SO JOURNAL OF PHASE EQUILIBRIA LA English DT Article ID TRANSITION-METAL ALLOYS; SHORT-RANGE ORDER; EMBEDDED-ATOM METHOD; PHASE-DIAGRAMS; INTERMETALLIC COMPOUNDS; ELECTRONIC-STRUCTURE; GROUND-STATE; CU-AU; ENERGY; 1ST-PRINCIPLES AB First-principles quantum-mechanical calculations indicate that the mixing enthalpies for Pd-Pt and Rh-Pt solid solutions are negative, in agreement with experiment, Calculations of the diffuse-scattering intensity due to short-range order also exhibits ordering tendencies, Further, the directly calculated enthalpies of formation of ordered intermetallic compounds are negative, These ordering tendencies are in direct conflict with a 1959 prediction of Raub that Pd-Pt and Rh-Pt will phase-separate below similar to 760 degrees C (hence their mixing energy will be positive), a position that has been adopted by all binary alloy phase diagram compilations, The present authors predict that Pd1-xPtx will order in the L1(2), L1(0), and L1(2) structures ([001] superstructures) at compositions x = 1/4, 1/2, 3/4 and respectively, while the ordered structures of Rh1-xPtx are predicted to be superlattices stacked along the [012] directions, While the calculated ordering temperatures for these intermetallic compounds are too low to enable direct growth into the ordered phase, diffuse-scattering experiments at higher temperatures should reveal ordering rather than phase-separation characteristics (i.e., off-Gamma peaks), The situation is very similar to the case of Ag-Au, where an ordering tendency is manifested both by a diffuse scattering intensity and by a negative enthalpy of mixing, An experimental reexamination of Pd-Pt and Rh-Pt is needed. C1 UNIV CALIF DAVIS, DEPT PHYS, DAVIS, CA 95616 USA. NATL RENEWABLE ENERGY LAB, GOLDEN, CO 80401 USA. RI Zunger, Alex/A-6733-2013 NR 77 TC 44 Z9 44 U1 3 U2 14 PU ASM INT PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 USA SN 1054-9714 J9 J PHASE EQUILIB JI J. Phase Equilib. PD FEB PY 1995 VL 16 IS 1 BP 36 EP 45 DI 10.1007/BF02646247 PG 10 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA TT791 UT WOS:A1995TT79100010 ER PT J AU BEHRENFELD, MJ LEAN, DRS LEE, H AF BEHRENFELD, MJ LEAN, DRS LEE, H TI ULTRAVIOLET-B RADIATION EFFECTS ON INORGANIC NITROGEN UPTAKE BY NATURAL ASSEMBLAGES OF OCEANIC PLANKTON SO JOURNAL OF PHYCOLOGY LA English DT Article DE ACTION SPECTRA; DOSE-RESPONSE; NITROGEN UPTAKE; PLANKTON; ULTRAVIOLET-B RADIATION ID SOLAR UV-RADIATION; MARINE DIATOMS; PHYTOPLANKTON PHOTOSYNTHESIS; 290-320NM RADIATION; LAUDERIA-ANNULATA; ACTION SPECTRA; IMPACT; N-15-NITRATE; N-15-AMMONIA; INHIBITION AB Ultraviolet-B radiation (UVBR: 290-320 nm) inhibited ammonium uptake (rho(NH4)) and nitrate uptake (rho(NO3)) in natural plankton assemblages collected during a transect from 37 degrees N to 55 degrees N in the Pacific Ocean. Comparison of responses in rho(NH4) to ambient solar- and lamp-enhanced UVBR spectra allowed calculation of an action spectrum for rho(NH4) inhibition. The slope of the action spectrum for rho(NH4) is half as steep as action spectra for UVBR inhibition of photosynthetic carbon uptake. Consequently, UVBR-induced photoinhibition of rho(NH4) extends to greater depths than inhibition of carbon fixation due to the greater relative effect of longer UVBR wavelengths. Inhibition of rho(NH4) was dependent upon UVBR dose when doses were weighted by the rho(NH4) action spectrum. Dependence of UVBR inhibition of rho(NH4) on dose rate was not apparent. We found that near-surface rho(NH4) and rho(NO3) can be overestimated in excess of 50% when measured using standard incubation vessels made of UVBR-absorbing materials such as polycarbonate. C1 NATL WATER RES INST BRANCH,BURLINGTON,ON L7R 4A6,CANADA. US EPA,ENVIRONM RES LAB,NEWPORT,OR 97365. RP BEHRENFELD, MJ (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,BLDG 318,UPTON,NY 11973, USA. NR 68 TC 72 Z9 72 U1 1 U2 5 PU PHYCOLOGICAL SOC AMER INC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044 SN 0022-3646 J9 J PHYCOL JI J. Phycol. PD FEB PY 1995 VL 31 IS 1 BP 25 EP 36 DI 10.1111/j.0022-3646.1995.00025.x PG 12 WC Plant Sciences; Marine & Freshwater Biology SC Plant Sciences; Marine & Freshwater Biology GA QN482 UT WOS:A1995QN48200003 ER PT J AU GALE, SJ SIMPSON, J RILEY, MA SHARPEYSCHAFER, JF PAUL, ES BENTLEY, MA BRUCE, AM CHAPMAN, R CLARK, RM CLARKE, S COPNELL, J CULLEN, DM FALLON, P FITZPATRICK, A FORSYTH, PD FREEMAN, SJ JONES, PM JOYCE, MJ LIDEN, F LISLE, JC MACCHIAVELLI, AO SMITH, AG SMITH, JF SWEENEY, J THOMPSON, DM WARBURTON, S WILSON, JN RAGNARSSON, I AF GALE, SJ SIMPSON, J RILEY, MA SHARPEYSCHAFER, JF PAUL, ES BENTLEY, MA BRUCE, AM CHAPMAN, R CLARK, RM CLARKE, S COPNELL, J CULLEN, DM FALLON, P FITZPATRICK, A FORSYTH, PD FREEMAN, SJ JONES, PM JOYCE, MJ LIDEN, F LISLE, JC MACCHIAVELLI, AO SMITH, AG SMITH, JF SWEENEY, J THOMPSON, DM WARBURTON, S WILSON, JN RAGNARSSON, I TI BAND TERMINATION SPECTROSCOPY IN ER-157 SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article DE CD-114(CA-48, 5N), E(CA-48) = 210 MEV MEASURED GAMMA(3), GAMMA(4) COINCIDENCES, GAMMA-GAMMA(THETA) (ANGULAR CORRELATIONS); ER-157, DEDUCED LEVELS, DECAYS, E(CHI), E(GAMMA), I-GAMMA AND J; ENRICHED TARGETS; EUROGAM ARRAY OF ESCAPE SUPPRESSED SPECTROMETERS (GE AND EGO DETECTORS); CRANKED-SHELL MODEL AND CRANKED NILSSON-STRUTINSKY CALCULATIONS; BAND TERMINATING STATES ID GAMMA-RAY SPECTROSCOPY; RARE-EARTH NUCLEI; HIGH-SPIN; YRAST LINE; STRUCTURAL-CHANGES; ISOTONES; STATES; DY-154; YB-158; 40H AB The level scheme of Er-157 has been extended from a spin region where the nucleus behaves as a prolate rotor to a region where the spin is produced by the alignment of all or most of the available valence nucleons along the symmetry axis of a weakly deformed oblate shape. The level scheme was established at high spin using up to four-fold gamma-ray coincidences detected in the Eurogam spectrometer following the reaction Cd-114(Ca-48, 5n)Er-157 at a bombarding energy of 210 MeV. Particularly favoured states have been established at I-pi = 69+/2, 81+/2, 71+/2, 77-/2, 87-/2 and 89-/2. Specific single-particle configurations are assigned to these special states by comparison with cranked Nilsson-Strutinsky calculations. These states are related to structures observed in the neighbouring nuclei Er-158 and (HO)-H-157. These data provide the spectrum of single-particle states for the lowest lying valence orbitals above the Gd-146 closed core. C1 DRAL,DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND. FLORIDA STATE UNIV,DEPT PHYS,TALLAHASSEE,FL 32306. STAFFORDSHIRE UNIV,SCH SCI,STOKE ON TRENT ST4 2DE,STAFFS,ENGLAND. UNIV BRIGHTON,DEPT MATH SCI,BRIGHTON BN2 4GJ,E SUSSEX,ENGLAND. UNIV PAISLEY,DEPT PHYS,PAISLEY PA1 2BE,RENFREW,SCOTLAND. UNIV YORK,DEPT PHYS,YORK YO1 5DD,N YORKSHIRE,ENGLAND. UNIV MANCHESTER,SCHUSTER LAB,MANCHESTER M13 9PL,LANCS,ENGLAND. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. NIELS BOHR INST,TANDEM ACCELERATOR LAB,DK-4000 ROSKILDE,DENMARK. LUND INST TECHNOL,DEPT MATH PHYS,S-22100 LUND,SWEDEN. RP GALE, SJ (reprint author), UNIV LIVERPOOL,OLIVER LODGE LAB,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. RI Freeman, Sean/B-1280-2010 OI Freeman, Sean/0000-0001-9773-4921 NR 39 TC 29 Z9 29 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0954-3899 J9 J PHYS G NUCL PARTIC JI J. Phys. G-Nucl. Part. Phys. PD FEB PY 1995 VL 21 IS 2 BP 193 EP 213 PG 21 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA QH276 UT WOS:A1995QH27600007 ER PT J AU MAITI, TC KAYE, JH AF MAITI, TC KAYE, JH TI MEASUREMENT OF TOTAL ALPHA-ACTIVITY OF NEPTUNIUM, PLUTONIUM AND AMERICIUM IN SIMULATED HANFORD WASTE BY IRON HYDROXIDE PRECIPITATION AND 2-HEPTANONE SOLVENT-EXTRACTION SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Note AB An improved method has been developed to concentrate the major alpha-emitting actinide elements neptunium, plutonium, and americium from samples with high salt content such as those resulting from efforts to characterize Hanford storage tank waste. Actinide elements are concentrated by coprecipitation of their hydroxides using iron carrier. The iron is removed by extraction from 8M HCl with 2-heptanone. The actinide elements remain in the aqueous phase free from salts and iron. Recoveries averaged 98%. RP MAITI, TC (reprint author), PACIFIC NW LAB, DEPT NUCL CHEM, POB 999,MS P7-07, RICHLAND, WA 99352 USA. NR 6 TC 4 Z9 4 U1 0 U2 1 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD FEB PY 1995 VL 190 IS 1 BP 175 EP 180 DI 10.1007/BF02035648 PG 6 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA QQ642 UT WOS:A1995QQ64200018 ER PT J AU JONES, DW ONEILL, RV AF JONES, DW ONEILL, RV TI DEVELOPMENT POLICIES, URBAN UNEMPLOYMENT AND DEFORESTATION - THE ROLE OF INFRASTRUCTURE AND TAX POLICY IN A 2-SECTOR MODEL SO JOURNAL OF REGIONAL SCIENCE LA English DT Article ID GLOBAL CARBON-CYCLE; LAND-USE; RESOURCE DEGRADATION; THIRD-WORLD; MIGRATION; STORAGE AB We model an economy of a developing country that produces an exportable manufactured good in an urban sector and a nontradable rural good. Manufacturing faces a fixed wage, which encourages urban unemployment. Changes in cultivated area in the rural sector involve deforestation or reforestation at frontiers. Government taxes to pay for urban infrastructure that assists the manufacturing sector. Increases in urban infrastructure may relieve or exacerbate frontier deforestation but expands manufacturing employment and reduces urban unemployment. Rural transportation improvements exacerbate frontier deforestation but expand employment in the urban manufacturing sector. A larger population, ceteris paribus, widens the rural-urban wage gap and exacerbates deforestation, but may cause manufacturing employment to expand or contract. C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. RP JONES, DW (reprint author), OAK RIDGE NATL LAB,DIV ENERGY,OAK RIDGE,TN 37831, USA. NR 32 TC 4 Z9 4 U1 0 U2 1 PU BLACKWELL PUBLISHERS PI CAMBRIDGE PA 238 MAIN STREET, CAMBRIDGE, MA 02142 SN 0022-4146 J9 J REGIONAL SCI JI J. Reg. Sci. PD FEB PY 1995 VL 35 IS 1 BP 135 EP 153 DI 10.1111/j.1467-9787.1995.tb01403.x PG 19 WC Economics; Environmental Studies; Planning & Development SC Business & Economics; Environmental Sciences & Ecology; Public Administration GA QJ338 UT WOS:A1995QJ33800008 ER PT J AU BUDINGER, TF TAYLOR, SE AF BUDINGER, TF TAYLOR, SE TI NEW APPROACHES TO TARGETING ARTHRITIS WITH RADIOPHARMACEUTICALS SO JOURNAL OF RHEUMATOLOGY LA English DT Article; Proceedings Paper CT 3rd International Symposium on Osteoarthritis - Challenges for the 21st-Century CY OCT 04-07, 1994 CL VAL DAVID, CANADA DE POSITRON EMISSION TOMOGRAPHY; APTAMERS; CYTOKINES; IGG; ARTHRITIS; PORPHYRINS ID GROWTH-FACTOR-BETA; STRANDED-DNA MOLECULES; NECROSIS-FACTOR-ALPHA; SUBSTANCE-P; RHEUMATOID-ARTHRITIS; NORMAL VOLUNTEERS; INFLAMMATION; ANTIBODIES; BINDING; OSTEOARTHRITIS AB Though emission imaging techniques have been a major clinical tool for imaging osteoblastic activity and tumor involvement of the bony skeleton for over 20 years, radiolabelled probes specific for pathophysiology of synovium and articular cartilage are just beginning to be explored. Recent success with Tc-99m labelled IgG, F-18-fluorodeoxyglucose, and antibodies to E-secretin encourage development of specific probes. The technology for radiolabelling peptide probes such as Mab and Fab with both positron emitters and conventional single photon emitters, the most recent concepts of labelling ssDNA aptamers specific for targeted proteins associated with diseases of the synovium and cartilage, and the availability of probes for substance P and porphyrin avid tissues has opened new horizons for studying the early onset of arthritis and therapeutic response to new forms of therapy. RP BUDINGER, TF (reprint author), UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, CTR FUNCT IMAGING, 1 CYCLOTRON RD, MAILSTOP 55-121, BERKELEY, CA 94720 USA. NR 46 TC 4 Z9 4 U1 2 U2 3 PU J RHEUMATOL PUBL CO PI TORONTO PA 365 BLOOR ST E, STE 901, TORONTO, ONTARIO M4W 3L4, CANADA SN 0315-162X J9 J RHEUMATOL JI J. Rheumatol. PD FEB PY 1995 VL 22 SU 43 BP 62 EP 67 PG 6 WC Rheumatology SC Rheumatology GA QH907 UT WOS:A1995QH90700022 ER PT J AU CZERNIK, S SCAHILL, J DIEBOLD, J AF CZERNIK, S SCAHILL, J DIEBOLD, J TI THE PRODUCTION OF LIQUID FUEL BY FAST PYROLYSIS OF BIOMASS SO JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME LA English DT Article AB The NREL Fast Ablative Pyrolysis Technology was employed to generate oils from various biomass feedstocks. The oil yield from wood (64 percent) was higher than from herbaceous species (51 percent). Biomass oils have potential to be used as fuel though their properties are different from those of petroleum derived oils. They are multicomponent mixtures containing various groups of organic compounds such as sugars, aldehydes, acids, and phenolics. The density of the oils is about 1.2 g/ml and the pH is in the range 2.5-3.7. The viscosity of 20-80 cP (at 45 degrees C) corresponds to that of No. 6 fuel oil. The high heating ualue for the biomass oils is in the range of 22.5-24.4 MJ/kg on a water-free basis. Considering the highest oil yields, it corresponds to approximately 65 percent of the wood heating value transferred to the oil. RP CZERNIK, S (reprint author), NATL RENEWABLE ENERGY LAB,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 17 TC 30 Z9 32 U1 0 U2 8 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0199-6231 J9 J SOL ENERG-T ASME JI J. Sol. Energy Eng. Trans.-ASME PD FEB PY 1995 VL 117 IS 1 BP 2 EP 6 DI 10.1115/1.2847714 PG 5 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA QG994 UT WOS:A1995QG99400001 ER PT J AU JUDKOFF, RD NEYMARK, JS AF JUDKOFF, RD NEYMARK, JS TI A PROCEDURE FOR TESTING THE ABILITY OF WHOLE BUILDING ENERGY SIMULATION PROGRAMS TO THERMALLY MODEL THE BUILDING FABRIC SO JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME LA English DT Article AB A procedure was developed for systematically testing whole building energy simulation models and diagnosing the sources of predictive disagreement. Field trials of the method were conducted with a number of detailed state-of-the-art programs by researchers from nations participating in International Energy Agency (IEA) Task 12 and Annex 21. The technique consists of a series of carefully specified rest case buildings that progress systematically from extremely simple to relatively realistic. Output values for the cases, such as annual loads, annual maximum and minimum temperatures, peak loads, and some hourly data are compared, and used in conjunction with diagnostic logic to determine the algorithms responsible for prediction differences. The more realistic cases, while geometrically simple, test the ability of the programs to model such combined effects as thermal mass, direct solar gain windows, window shading devices, internally generated heat, infiltration, sunspaces, earth coupling, and deadband and setback thermostat control. The more simplified cases facilitate diagnosis by allowing excitation of particular heat transfer mechanisms. The procedure was very effective at revealing bugs, faulty algorithms, and input errors in a group of building energy simulation programs that may be considered among the world's best. The output data fr om the simulation programs can be used as reference ranges for comparing and diagnosing other detailed or simplified design tools. RP JUDKOFF, RD (reprint author), NATL RENEWABLE ENERGY LAB,DIV BLDG & ENERGY SYST,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 33 TC 14 Z9 14 U1 0 U2 4 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0199-6231 J9 J SOL ENERG-T ASME JI J. Sol. Energy Eng. Trans.-ASME PD FEB PY 1995 VL 117 IS 1 BP 7 EP 15 DI 10.1115/1.2847754 PG 9 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA QG994 UT WOS:A1995QG99400002 ER PT J AU CHRISTENSEN, AN NORBY, P HANSON, JC AF CHRISTENSEN, AN NORBY, P HANSON, JC TI CHEMICAL-REACTIONS IN THE SYSTEM MGO-MGCL2-H2O FOLLOWED BY TIME-RESOLVED SYNCHROTRON X-RAY-POWDER DIFFRACTION SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article AB The chemical reactions in the system MgO-MgCl2-H2O were investigated by on-line synchrotron X-ray powder diffraction at temperatures up to 100 degrees C. The crystalline reaction products formed were Mg(OH)(2) and MgCl2 . 5Mg(OH)(2) . 8H(2)O. The reaction rates in these heterogeneous systems are strongly dependent upon the concentrations of the magnesium chloride solutions, the molar ratio MgCl2/MgO, and the temperature. (C) 1995 Academic Press, Inc. C1 ODENSE UNIV,DEPT CHEM,DK-5230 ODENSE M,DENMARK. BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. RP CHRISTENSEN, AN (reprint author), AARHUS UNIV,DEPT INORGAN CHEM,DK-8000 AARHUS C,DENMARK. RI Hanson, jonathan/E-3517-2010; Norby, Poul/B-9047-2014 OI Norby, Poul/0000-0002-2590-7050 NR 5 TC 25 Z9 25 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD FEB 1 PY 1995 VL 114 IS 2 BP 556 EP 559 DI 10.1006/jssc.1995.1085 PG 4 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA QH331 UT WOS:A1995QH33100039 ER PT J AU MORRIS, MD MITCHELL, TJ AF MORRIS, MD MITCHELL, TJ TI EXPLORATORY DESIGNS FOR COMPUTATIONAL EXPERIMENTS SO JOURNAL OF STATISTICAL PLANNING AND INFERENCE LA English DT Article DE BAYESIAN PREDICTION; COMPUTER EXPERIMENT; COMPUTER MODEL; INTERPOLATION; LATIN HYPERCUBE DESIGN; MAXIMIN DESIGN; RANDOM FUNCTIONS ID COMPUTER EXPERIMENTS; PREDICTION AB Recent work by Johnson et al. (J. Statist. Plann. Inference 26 (1990) 131-148) establishes equivalence of the maximin distance design criterion and an entropy criterion motivated by function prediction in a Bayesian setting. The latter criterion has been used by Currin et al. (J. Amer. Statist. Assoc. 86 (1991) 953-963) to design experiments for which the motivating application is approximation of a complex deterministic computer model. Because computer experiments often have a large number of controlled variables (inputs), maximin designs of moderate size are often concentrated in the corners of the cuboidal design region, i.e. each input is represented at only two levels. Here we will examine some maximin distance designs constructed within the class of Latin hypercube arrangements. The goal of this is to find designs which offer a compromise between the entropy/maximin criterion, and good projective properties in each dimension (as guaranteed by Latin hypercubes). A simulated annealing search algorithm is presented for constructing these designs, and patterns apparent in the optimal designs are discussed. C1 OAK RIDGE NATL LAB,DIV EPM,MATH SCI SECT,OAK RIDGE,TN 37831. NR 12 TC 299 Z9 325 U1 7 U2 30 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3758 J9 J STAT PLAN INFER JI J. Stat. Plan. Infer. PD FEB PY 1995 VL 43 IS 3 BP 381 EP 402 DI 10.1016/0378-3758(94)00035-T PG 22 WC Statistics & Probability SC Mathematics GA QF424 UT WOS:A1995QF42400006 ER PT J AU ALEXANDER, KB BECHER, PF WANG, XL HSUEH, CH AF ALEXANDER, KB BECHER, PF WANG, XL HSUEH, CH TI INTERNAL-STRESSES AND THE MARTENSITE START TEMPERATURE IN ALUMINA-ZIRCONIA COMPOSITES - EFFECTS OF COMPOSITION AND MICROSTRUCTURE SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID THERMAL-EXPANSION ANISOTROPY; TRANSFORMATION BEHAVIOR; TETRAGONAL ZIRCONIA; GRAIN-SIZE AB In alumina-based composites containing ceria-stabilized tetragonal zirconia, the martensite start temperature (M(s)) of the tetragonal-to-monoclinic zirconia phase transformation exhibits a grain size dependence that becomes increasingly pronounced as the zirconia content decreases. Neutron diffraction experiments confirm earlier dilatometry measurements of M(s) in composites containing greater than or equal to 20 vol% ZrO2 and were instrumental in obtaining M(s) values in lower zirconia content (i.e., 10 vol%) composites. The dependence of M(s) on zirconia content is related to the internal stresses that arise from differences in thermal expansion coefficients between the two phases. Neutron diffraction measurements show that the internal tensile stresses in the zirconia grains increase with decreasing zirconia content. The measured internal stresses are in quantitative agreement with predictions based on models assuming isolated ZrO2 particles at low zirconia contents and a continuous ZrO2 ''matrix'' phase at higher zirconia contents. This assumption is consistent with the observed microstructural development in which the low zirconia contents result in isolated zirconia grains, whereas higher zirconia contents result in more interconnected zirconia grains. RP ALEXANDER, KB (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN 37831, USA. RI Hsueh, Chun-Hway/G-1345-2011; Wang, Xun-Li/C-9636-2010 OI Wang, Xun-Li/0000-0003-4060-8777 NR 22 TC 26 Z9 27 U1 0 U2 4 PU AMER CERAMIC SOC 735 CERAMIC PLACE PI WESTERVILLE PA PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD FEB PY 1995 VL 78 IS 2 BP 291 EP 296 DI 10.1111/j.1151-2916.1995.tb08799.x PG 6 WC Materials Science, Ceramics SC Materials Science GA QG272 UT WOS:A1995QG27200003 ER PT J AU WESTRE, TE LOEB, KE ZALESKI, JM HEDMAN, B HODGSON, KO SOLOMON, EI AF WESTRE, TE LOEB, KE ZALESKI, JM HEDMAN, B HODGSON, KO SOLOMON, EI TI DETERMINATION OF THE GEOMETRIC AND ELECTRONIC-STRUCTURE OF ACTIVATED BLEOMYCIN USING X-RAY-ABSORPTION SPECTROSCOPY SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID DNA-DEGRADATION; IRON; COMPLEXES; COORDINATION; SPECTRA; INTERMEDIATE; MOLYBDENUM; CHEMISTRY; PROTEINS; OXYGEN AB Activated Bleomycin (BLM) is the first mononuclear non-heme iron oxygen intermediate stable enough for detailed spectroscopic study. DNA degradation by activated BLM involves C-H bond:cleavage at the C4' position of deoxyribose moieties and results in the production of base propenals.::It has been postulated that activated BLM is an oxo-ferryl intermediate on the basis of its reactivity and analogy With cytochrome P-450 chemistry. Alternatively, spectroscopic and model studies have indicated activated BLM to have an iron(III)-peroxide site. In this study, X-ray absorption spectroscopy (XAS) has been used to directly probe the oxidation and spin states of the iron in activated BLM and to determine if a short iron-ore bond is present, which would be characteristic of the oro-ferryl species of heme iron. Both the pre-edge and edge regions of the:Ee K-edge spectra indicate that activated BLM is a low spin ferric complex, The pre-edge intensity of activated BLM is also similar to that of low spin ferric BLM and does not show the intensity enhancement which would be present if there were a short Fe-O bond. Furthermore, bond distances obtained from EXAFS are similar to those in low spin Fen(III)BLM and show no evidence for a short iron-ore bond. These data indicate that activated BLM is a peroxy-low spin ferric complex and suggest that such an intermediate may play an important role in activating O-2 for further chemistry in the catalytic cycles of mononuclear non-heme iron enzymes. C1 STANFORD UNIV,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94305. STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305. NR 32 TC 82 Z9 82 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD FEB 1 PY 1995 VL 117 IS 4 BP 1309 EP 1313 DI 10.1021/ja00109a014 PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA QE730 UT WOS:A1995QE73000014 ER PT J AU HABIBIGOUDARZI, S MCLUCKEY, SA AF HABIBIGOUDARZI, S MCLUCKEY, SA TI ION-TRAP COLLISIONAL ACTIVATION OF THE DEPROTONATED DEOXYMONONUCLEOSIDE AND DEOXYDINUCLEOSIDE MONOPHOSPHATES SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY LA English DT Article ID FAST-ATOM-BOMBARDMENT; TANDEM MASS-SPECTROMETRY; PROTON AFFINITIES; DISSOCIATION; ANIONS AB Deoxymononucleoside and deoxydinucleoside monophosphate anions formed by electrospray have been subjected to ion trap collisional activation. The threshold for decomposition via loss of base is significantly lower for the deoxymononucleoside 3'-monophosphates than for the corresponding 5'-monophosphates, which indicates that the presence of a charged 3' phosphate group facilitates base loss. The behavior of the bases among each class of isomers shows slight variation in threshold and tandem mass spectrometry efficiency with the notable exception of 2'-deoxyguanosine 5'-monophosphate. This ion is exceptionally stable toward decomposition via base loss, which reflects a strong hydrogen bonding interaction between the base and the phosphate group. All dinucleotides fragment via similar mechanisms, but the propensity for neutral base loss relative to loss of a charged base is highly dependent on the identities of both the 5' and 3' bases. The behavior of the dinucleotides under collisional activation conditions supports the proposal that base loss proceeds via a proton-bound dimer intermediate in which loss of the charged base directly competes with loss of the neutral base. Application of the kinetic method allows for quantitative predictions of the differences of the gas-phase acidities of the dimer components. C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,POB 2008,OAK RIDGE,TN 37831. RI McLuckey, Scott/B-2203-2009 OI McLuckey, Scott/0000-0002-1648-5570 NR 23 TC 62 Z9 62 U1 0 U2 3 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 1044-0305 J9 J AM SOC MASS SPECTR JI J. Am. Soc. Mass Spectrom. PD FEB PY 1995 VL 6 IS 2 BP 102 EP 113 DI 10.1016/S1044-0305(94)00108-C PG 12 WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA QH663 UT WOS:A1995QH66300003 PM 24222072 ER PT J AU CABLE, PR PARKER, M MARCUS, RK POCHKOWSKI, JM AF CABLE, PR PARKER, M MARCUS, RK POCHKOWSKI, JM TI DIRECT GENERATION OF ION-BEAM IMAGES WITH A 2-DIMENSIONAL CHARGE INJECTION DEVICE SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY LA English DT Note ID DISCHARGE MASS-SPECTROMETRY; ATOMIC-EMISSION-SPECTROSCOPY; ARRAY DETECTOR; DESIGN CONSIDERATIONS; FLUCTUATIONS; PERFORMANCE; SYSTEM; GUIDE AB The use of a two-dimensional charge injection device (CID) to directly image the spatial profile of impingent positively charged ions is described. By this approach, no prior conversion from an ion beam to a photon image is required. Because of the positive response of the device to plasma photons, ions that emanated from the radiofrequency glow discharge source were diverted around a photon stop and focused onto the CID. The resultant ion images were digitized via an external image processor and corrected for dark current contributions. Two-dimensional ion images and single pixel line profiles are presented. C1 CLEMSON UNIV,HOWARD L HUNTER CHEM LABS,DEPT CHEM,CLEMSON,SC 29634. WESTINGHOUSE SAVANNAH RIVER CO,SAVANNAH RIVER TECHNOL CTR,ENVIRONM TECHNOL SECT,AIKEN,SC. NR 49 TC 0 Z9 0 U1 1 U2 3 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 1044-0305 J9 J AM SOC MASS SPECTR JI J. Am. Soc. Mass Spectrom. PD FEB PY 1995 VL 6 IS 2 BP 140 EP 147 DI 10.1016/S1044-0305(94)00104-8 PG 8 WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA QH663 UT WOS:A1995QH66300007 PM 24222076 ER PT J AU MCBREEN, J YANG, XQ LEE, HS OKAMOTO, Y AF MCBREEN, J YANG, XQ LEE, HS OKAMOTO, Y TI X-RAY-ABSORPTION STUDIES OF MIXED SALT POLYMER ELECTROLYTES ZNBR2/CABR2-PEO, ZNBR2/LIBR-PEO, AND ZNBR2/RBBR-PEO COMPLEXES SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID FINE-STRUCTURE; EXAFS; LI(I); EDGE; ZINC AB X-ray absorption (XAS) studies of ZnBr2-PEO complexes, at the Zn K edge, at temperatures between 25 and 120 degrees C, indicate that additions of bromide salts of Li, Rb, or Ca result in the formation of ZnBr4= complexes with a Zn-Br bond length of 2.42 Angstrom. XAS, at the Rb K edge, in mixed RbBr/ZnBr2-PEO complexes with an excess of ZnBr2, shows that the ZnBr2 causes the RbBr to dissolve in the polymer The Rb+ ions are weakly complexed with the PEO with an Rb-O bond distance of 2.93 Angstrom. C1 POLYTECH INST NEW YORK,BROOKLYN,NY 11201. RP MCBREEN, J (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 25 TC 11 Z9 11 U1 0 U2 4 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD FEB PY 1995 VL 142 IS 2 BP 348 EP 354 DI 10.1149/1.2044003 PG 7 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA QG026 UT WOS:A1995QG02600008 ER PT J AU YONESHIGE, KK PARKS, HG RAGHAVAN, S HISKEY, JB RESNICK, PJ AF YONESHIGE, KK PARKS, HG RAGHAVAN, S HISKEY, JB RESNICK, PJ TI DEPOSITION OF COPPER FROM A BUFFERED OXIDE ETCHANT ONTO SILICON-WAFERS SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID SURFACE; IRON AB The deposition of copper from a buffered oxide etchant (BOE) onto bare silicon, silicon dioxide, and patterned silicon wafers has been investigated. Deposition does not occur on surfaces of silicon dioxide, while deposition on regions of patterned silicon dioxide are observed at levels which fall between the deposition on bare silicon and silicon dioxide. The duration of a wafer rinse, which follows each immersion into a BOE solution, the silicon material as well as substrate doping do not affect the amount of deposition. The process of copper deposition from a BOE solution occurs uniformly across the surface of the wafer. The deposition on bare silicon surfaces shows an Arrhenius behavior, with two distinct activation energies: 0.40 eV (38.6 kJ mol(-1)) when the surface concentration is less than 6 x 10(14) Cu atom cm(-2) and 0.20 eV (19.3 kJ mol(-1)) when the surface concentration is greater than 6 x 10(14) Cu atom cm(-2). Surface roughness is observed to increase with the extent of deposition. An electrochemical reduction is used to describe the deposition of copper onto a silicon surface from a BOE solution. C1 UNIV ARIZONA,DEPT MAT SCI & ENGN,TUCSON,AZ 85721. SANDIA NATL LABS,MICROELECTR DEV LAB,ALBUQUERQUE,NM 87185. RP YONESHIGE, KK (reprint author), UNIV ARIZONA,DEPT ELECT & COMP ENGN,TUCSON,AZ 85721, USA. NR 12 TC 37 Z9 37 U1 2 U2 3 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD FEB PY 1995 VL 142 IS 2 BP 671 EP 676 DI 10.1149/1.2044121 PG 6 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA QG026 UT WOS:A1995QG02600064 ER PT J AU PHILPOTT, MR GLOSLI, JN AF PHILPOTT, MR GLOSLI, JN TI SCREENING OF CHARGED ELECTRODES IN AQUEOUS-ELECTROLYTES SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Letter ID MOLECULAR-DYNAMICS SIMULATION; PARTICLE SIMULATIONS; WATER; IONS; ADSORPTION; ALGORITHM AB Molecular dynamics simulations are used to demonstrate for the first time that systems about 4 nm thick containing 1200-1600 water molecules and NaCl at 1-3M concentrations exhibit the main components of electric double layers at charged metal surfaces. In particular, for the system chosen, there are regions clearly identifiable as a bulk electrolyte zone, a diffuse layer that screens the charge on the electrode, and a layer of oriented water localized next to the electrode. The width of the diffuse layer increases with decrease in salt concentration from 0.2 nm at 3M to 0.5 nm at 1M. All the calculations are based on the simple point-charge (SPCE) water model and the immersed-electrode approximation. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP PHILPOTT, MR (reprint author), IBM CORP,ALMADEN RES CTR,DIV RES,SAN JOSE,CA 95120, USA. NR 19 TC 16 Z9 16 U1 0 U2 2 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD FEB PY 1995 VL 142 IS 2 BP L25 EP L28 DI 10.1149/1.2044124 PG 4 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA QG026 UT WOS:A1995QG02600002 ER PT J AU BISSON, SE COMASKEY, B WORDEN, EF AF BISSON, SE COMASKEY, B WORDEN, EF TI METHOD TO MEASURE EXCITED-LEVEL-TO-EXCITED-LEVEL BRANCHING RATIOS AND ATOMIC TRANSITION-PROBABILITIES BY TIME-RESOLVED LASER PHOTOIONIZATION SPECTROSCOPY SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article AB An established photoionization branching-ratio measurement method, in which an excited level of an atom is populated by a pulsed laser from the ground level and repopulation of the ground level is measured by a second laser or lasers, is extended to the case with a finite lower-level lifetime. Two pulsed dye lasers populate the upper and the lower levels of the transition of interest. A third pulsed dye laser probes the time evolution of the lower level by a photoionization process. This measurement, coupled with the upper- and the lower-level lifetimes, permits the determination of the branching ratio and transition probability. Cerium branching ratios obtained are compared with those that we determined from the emission spectrum of cerium. The method is tested for the difficult case in which the lifetimes of the transition levels are nearly equivalent. The effects of magnetic sublevels are investigated in ytterbium. C1 UNIV CALIF DAVIS,DEPT APPL SCI,LIVERMORE,CA 94550. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 14 TC 8 Z9 8 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD FEB PY 1995 VL 12 IS 2 BP 193 EP 202 DI 10.1364/JOSAB.12.000193 PG 10 WC Optics SC Optics GA QF763 UT WOS:A1995QF76300001 ER PT J AU VALENTINE, GA GIANNETTI, B AF VALENTINE, GA GIANNETTI, B TI SINGLE PYROCLASTIC BEDS DEPOSITED BY SIMULTANEOUS FALLOUT AND SURGE PROCESSES - ROCCAMONFINA VOLCANO, ITALY SO JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH LA English DT Article ID ROMAN REGION; EMPLACEMENT; TUFF AB A sequence of fine-grained, hydrovolcanically generated pyroclastic surge deposits in the White Trachytic Tuff, Roccamonfina volcano, Italy, contains two layers of coarse pumice clasts. Pumice fragments in these layers show no evidence for abrasion during lateral transport, unlike pumice in the enclosing deposits, and are well sorted. In most locations they have textural and grain size characteristics typical of Plinian fall deposits. Bedding of these pumice layers ranges from planar with gradual thickness variation over a few meters distance, to highly variable with strong thickening in depressions. The layers are interpreted to record deposition of pumice falling from a Plinian eruption column through laterally moving pyroclastic surges. Depending on the local vigor of the surges during the fallout event, bedding characteristics range from those approaching pure fallout to those approaching pure surge. The simultaneous Plinian and hydrovolcanic, pyroclastic surge-producing activity may have come from two (or more) separate vents, or from a single vent that experienced rapid variations in magma-water interaction. C1 UNIV ROMA LA SAPIENZA,DIPARTIMENTO SCI TERRA,RICERCATORE CNR,ROME,ITALY. RP VALENTINE, GA (reprint author), LOS ALAMOS NATL LAB,GEOANAL GRP,MAIL STOP F665,LOS ALAMOS,NM 87545, USA. NR 23 TC 23 Z9 23 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0273 J9 J VOLCANOL GEOTH RES JI J. Volcanol. Geotherm. Res. PD FEB PY 1995 VL 64 IS 1-2 BP 129 EP 137 DI 10.1016/0377-0273(94)00049-M PG 9 WC Geosciences, Multidisciplinary SC Geology GA QK349 UT WOS:A1995QK34900008 ER PT J AU DEWEERT, TM GOLUB, MS KAAEKUAHIWI, MA AF DEWEERT, TM GOLUB, MS KAAEKUAHIWI, MA TI LONG-TERM EPIDURAL CATHETERIZATION OF RHESUS MACAQUES - LOSS OF RESISTANCE TECHNIQUE SO LABORATORY ANIMAL SCIENCE LA English DT Article AB A method was developed for implantation of epidural catheters in the pregnant rhesus macaque (Macaca mulatta) for subsequent drug delivery in the fully conscious animal at parturition. Catheters were placed into the epidural space of 23 pregnant monkeys and accessed via a subcutaneously implanted vascular access port. The loss-of-resistance technique, a simple nonsurgical (percutaneous) technique, was used to locate the epidural space. Placement was confirmed at surgery by contrast radiography. There were no perioperative complications, and complications associated with long-term catheterization were limited. RP DEWEERT, TM (reprint author), LAWRENCE LIVERMORE NATL LAB,CALIF REG PRIMATE RES CTR,DAVIS,CA 95616, USA. FU NCRR NIH HHS [RR00169]; NIGMS NIH HHS [GM32920] NR 14 TC 5 Z9 5 U1 0 U2 0 PU AMER ASSOC LABORATORY ANIMAL SCIENCE PI CORDOVA PA 70 TIMBERCREEK DR, SUITE 5, CORDOVA, TN 38018 SN 0023-6764 J9 LAB ANIM SCI JI Lab. Anim. Sci. PD FEB PY 1995 VL 45 IS 1 BP 94 EP 97 PG 4 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA QW949 UT WOS:A1995QW94900018 PM 7752623 ER PT J AU GOLDBERG, PW JERRUM, MR AF GOLDBERG, PW JERRUM, MR TI BOUNDING THE VAPNIK-CHERVONENKIS DIMENSION OF CONCEPT CLASSES PARAMETERIZED BY REAL NUMBERS SO MACHINE LEARNING LA English DT Article DE CONCEPT LEARNING; INFORMATION THEORY; VAPNIK-CHERVONENKIS DIMENSION; MILNORS THEOREM ID LEARNABILITY; SETS AB The Vapnik-Chervonenkis (V-C) dimension is an important combinatorial tool in the analysis of learning problems in the PAC framework. For polynomial learnability, we seek upper bounds on the V-C dimension that are polynomial in the syntactic complexity of concepts. Such upper bounds are automatic for discrete concept classes, but hitherto little has been known about what general conditions guarantee polynomial bounds on V-C dimension for classes in which concepts and examples are represented by tuples of real numbers. In this paper, we show that for two general kinds of concept class the V-C dimension is polynomially bounded in the number of real numbers used to define a problem instance. One is classes where the criterion for membership of an instance in a concept can be expressed as a formula (in the first-order theory of the reals) with fixed quantification depth and exponentially-bounded length, whose atomic predicates are polynomial inequalities of exponentially-bounded degree. The other is classes where containment of an instance in a concept is testable in polynomial time, assuming we may compute standard arithmetic operations on reals exactly in constant time. Our results show that in the continuous case, as in the discrete, the real barrier to efficient learning in the Occam sense is complexity-theoretic and not information-theoretic. We present examples to show how these results apply to concept classes defined by geometrical figures and neural nets, and derive polynomial bounds on the V-C dimension for these classes. C1 UNIV EDINBURGH,DEPT COMP SCI,EDINBURGH EH9 3JZ,MIDLOTHIAN,SCOTLAND. RP GOLDBERG, PW (reprint author), SANDIA NATL LABS,DEPT 1423,MS 1110,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 28 TC 56 Z9 56 U1 0 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0885-6125 J9 MACH LEARN JI Mach. Learn. PD FEB-MAR PY 1995 VL 18 IS 2-3 BP 131 EP 148 DI 10.1007/BF00993408 PG 18 WC Computer Science, Artificial Intelligence SC Computer Science GA QQ671 UT WOS:A1995QQ67100002 ER PT J AU POTTER, MD KLEBIG, ML CARPENTER, DA RINCHIK, EM AF POTTER, MD KLEBIG, ML CARPENTER, DA RINCHIK, EM TI GENETIC AND PHYSICAL MAPPING OF THE FITNESS-1 (FIT1) LOCUS WITHIN THE FES-HBB REGION OF MOUSE CHROMOSOME-7 SO MAMMALIAN GENOME LA English DT Article ID ALBINO-DELETION COMPLEX; EXTRAEMBRYONIC ECTODERM; LETHAL MUTATIONS; CLONING; DEFINES AB Mutations at the fit1 locus affect normal pre- and post-natal development by retarding growth and reducing viability. We report mapping of the fit1 locus, by trans-complementation crosses to mice carrying deletions of the albino (c) locus in Chromosome (Chr) 7, to a subregion of the c-deletion complex within the Mod2-shl interval. The fit1 locus, which is currently defined by five N-ethyl-N-nitrosourea (ENU)-induced mutations, was found to map in a subregion between the eed and exed loci. A restriction fragment containing a deletion breakpoint that genetically defines the proximal border of fit1 was cloned, providing a DNA probe (RN302) that maps proximal to fit1. Long-range mapping with this probe, and with a DNA probe that maps distal to the fit1 interval, established that the region containing at least part of the fit1 gene is 530 kb or less. Positioning of fit1 between deletion breakpoints, and the isolation and mapping of a DNA probe proximal to it, should facilitate the cloning and molecular characterization of fit1, as well as of the eed locus and the tightly linked l(7)5Rn and l(7)6Rn loci. C1 UNIV TENNESSEE,OAK RIDGE GRAD SCH BIOMED SCI,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831. FU NHGRI NIH HHS [HG 00370] NR 21 TC 17 Z9 17 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0938-8990 J9 MAMM GENOME JI Mamm. Genome PD FEB PY 1995 VL 6 IS 2 BP 70 EP 75 DI 10.1007/BF00303247 PG 6 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity GA QG121 UT WOS:A1995QG12100002 PM 7767008 ER PT J AU KING, WE CAMPBELL, G GONIS, T HENSHALL, G LESUER, D ZYWICZ, E FOILES, S AF KING, WE CAMPBELL, G GONIS, T HENSHALL, G LESUER, D ZYWICZ, E FOILES, S TI THEORY, SIMULATION, AND MODELING OF INTERFACES IN MATERIALS-BRIDGING THE LENGTH-SCALE GAP - A WORKSHOP REPORT SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE INTERFACES; MODELING ID CRACK AB The workshop on interfaces in materials-bridging the length-scale gap was held on September 12-15, 1993, at the University of California at San Diego Institute for Mechanics and Materials, La Jolla, CA. This workshop addressed length-scale issues associated with developing a predictive capability for materials whose properties are interface controlled. The goal of this workshop was to identify touch points bridging the various length scales important in materials modeling of systems whose properties are controlled by interfaces. The format of this workshop broke with convention by initiating discussion at the macro scale. Each speaker identified key physical parameters central to their model. Subsequent speakers, in order of decreasing length scale, identified where their model fitted within the context of the larger length scales and which parameters required at the larger length scales can be predicted. The topics that were covered include (1) modeling at the macro scale-phenomenological and finite element, (2) modeling at the micro scale-crystalline effects, (3) modeling and simulation at the atomic scale-interatomic potentials for complex systems, (4) electronic structure calculations-application to interfaces, and (5) critical experiments which serve to validate theoretical models. C1 SANDIA NATL LABS,LIVERMORE,CA. RP KING, WE (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. OI Foiles, Stephen/0000-0002-1907-454X NR 45 TC 18 Z9 18 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 1 PY 1995 VL 191 IS 1-2 BP 1 EP 16 DI 10.1016/0921-5093(94)09629-B PG 16 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QG612 UT WOS:A1995QG61200001 ER PT J AU SUKIDI, N KOCH, CC LIU, CT AF SUKIDI, N KOCH, CC LIU, CT TI THE OXIDATION OF NI3SI-BASE ALLOYS SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE NICKEL; SILICON; ALLOYS; OXIDATION ID NICKEL; BEHAVIOR; SILICON AB The isothermal oxidation behavior in air of Ni-19at.%Si and Ni-19at.%Si-8at.%Cr alloys, which are based on the L1(2) structure of Ni3Si, was studied in the oxidation temperature range from 500 degrees C to 900 degrees C for exposures up to 20 h. The maximum oxidation rate for Ni-19at.%Si was observed at 700 degrees C. The oxides which formed in this alloy at temperatures up to 700 degrees C consisted of external NiO layers and internal oxides that preferentially formed in the two-phase (L1(2) + f.c.c.) regions of the microstructure adjacent to the sample surface. The increase in oxidation rate with temperature below 700 degrees C is attributed to these oxides. For oxidation temperatures above 700 degrees C a sharp decrease in oxidation rate is observed and is attributed to the formation of a continuous SiO2 protective oxide film at the base of the NiO layers. The addition of 8 at.% Cr significantly modified the oxidation behavior of the alloy with a monotonic increase in weight gain observed as a function of oxidation temperature. The formation of Cr2O3 appears to dominate the oxidation behavior of the Ni-19at.%Si-8at.%Cr alloys. At temperatures below 800 degrees C, the oxidation rates for the Cr-containing alloy were found to be significantly lower than those for the Ni-19at.%Si base alloy. However, at temperatures of 800 degrees C and above the oxidation rates were larger than in the base alloy, suggesting that the Cr2O3 scale is less protective than the SiO2 scale which forms in the base alloy in this temperature range. The formation of a continuous Ni3Si layer by Cr depletion that is separated from the external Cr2O3 by an Ni-rich oxide region is observed. C1 OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831. RP SUKIDI, N (reprint author), N CAROLINA STATE UNIV,DEPT MAT SCI & ENGN,BOX 7907,RALEIGH,NC 27695, USA. RI Koch, Carl/B-9101-2008; OI Liu, Chain Tsuan/0000-0001-7888-9725 NR 19 TC 14 Z9 18 U1 1 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 1 PY 1995 VL 191 IS 1-2 BP 223 EP 231 DI 10.1016/0921-5093(94)09639-E PG 9 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QG612 UT WOS:A1995QG61200022 ER PT J AU WERESZCZAK, AA KIRKLAND, TP BREDER, K FERBER, MK KHANDELWAL, P AF WERESZCZAK, AA KIRKLAND, TP BREDER, K FERBER, MK KHANDELWAL, P TI HIGH-TEMPERATURE DYNAMIC FATIGUE PERFORMANCE OF A HOT ISOSTATICALLY PRESSED SILICON-NITRIDE SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE SILICON; NITROGEN; FATIGUE; HOT ISOSTATIC PRESSING ID HEAT-TREATMENTS; OXIDATION; STRENGTH; BEHAVIOR; SI3N4; PHASE AB The dynamic fatigue performance of an injection molded, hot-isostatically pressed silicon nitride containing 6 wt.% yttrium oxide as a sintering aid was examined at 1000, 1200, and 1400 degrees C, in four-point flexure in ambient air and argon. This material was more susceptible to slow crack growth, as reflected by the slopes of the flexure strength vs. stressing rate curves, as the test temperature was increased in both environments. At the same temperature, this material was much more susceptible to slow crack growth in ambient air than in argon. Stress-corrosion cracking (and not creep damage) was the dominant damage mechanism, although the material crept at the slower stressing rates in both environments. Stress-corrosion cracking ultimately caused a reduction in strength. C1 ALLISON ENGINE CO,INDIANAPOLIS,IN 46206. RP WERESZCZAK, AA (reprint author), OAK RIDGE NATL LAB,HIGH TEMP MAT LAB,OAK RIDGE,TN 37831, USA. RI Wereszczak, Andrew/I-7310-2016 OI Wereszczak, Andrew/0000-0002-8344-092X NR 23 TC 14 Z9 15 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD FEB 1 PY 1995 VL 191 IS 1-2 BP 257 EP 266 DI 10.1016/0921-5093(94)09640-6 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA QG612 UT WOS:A1995QG61200026 ER PT J AU BABU, SS DAVID, SA VITEK, JM MUNDRA, K DEBROY, T AF BABU, SS DAVID, SA VITEK, JM MUNDRA, K DEBROY, T TI DEVELOPMENT OF MACROSTRUCTURE AND MICROSTRUCTURE OF CARBON-MANGANESE LOW-ALLOY STEEL WELDS - INCLUSION FORMATION SO MATERIALS SCIENCE AND TECHNOLOGY LA English DT Article ID SLAG-METAL REACTIONS; HSLA STEEL; MULTIPASS DEPOSITS; ACICULAR FERRITE; SURFACE-TENSION; DEOXIDATION; TOUGHNESS; CHEMISTRY; STRENGTH; ALUMINUM AB Ladle steel deoxidation reactions are reviewed and the principles are extended to inclusion formation in steel weld metal. The dissolution of oxygen, the stability of various oxides, and the nucleation and growth of inclusions are discussed. Theoretical time-temperature transformation (TTT) diagrams are calculated for various oxide inclusions based on an overall kinetics approach using nucleation and growth rare expressions. These concepts are then extended to understand the development of weld metal inclusion characteristics. A strong correlation between the published inclusion composition and the stability of the oxides was found. An analysis of the TTT diagrams indicates that, during weld cooling, sequential oxidation of dissolved deoxidising elements takes place, which agrees with the reported layered morphology of inclusions. The analysis indicates that the inclusion characteristics are quite sensitive to the oxygen content, the deoxidising element concent rations, the presence of performed inclusions, and the reaction temperature. Inclusion coarsening and elimination of inclusions from welds are discussed in relation to the final inclusion characteristics. C1 PENN STATE UNIV, DEPT MAT SCI & ENGN, UNIVERSITY PK, PA 16802 USA. RP BABU, SS (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, OAK RIDGE, TN USA. RI Babu, Sudarsanam/D-1694-2010; DebRoy, Tarasankar/A-2106-2010 OI Babu, Sudarsanam/0000-0002-3531-2579; NR 69 TC 78 Z9 79 U1 2 U2 14 PU MANEY PUBLISHING PI LEEDS PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND SN 0267-0836 EI 1743-2847 J9 MATER SCI TECH-LOND JI Mater. Sci. Technol. PD FEB PY 1995 VL 11 IS 2 BP 186 EP 199 PG 14 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RE567 UT WOS:A1995RE56700016 ER PT J AU HIGASHI, K OKADA, T MUKAI, T TANIMURA, S NIEH, TG WADSWORTH, J AF HIGASHI, K OKADA, T MUKAI, T TANIMURA, S NIEH, TG WADSWORTH, J TI SUPERPLASTICITY IN VERY FINE-GRAINED AL-BASED ALLOYS PRODUCED BY MECHANICAL ALLOYING SO MATERIALS TRANSACTIONS JIM LA English DT Article DE POSITIVE EXPONENT SUPERPLASTICITY; HIGH STRAIN RATES; HIGH TEMPERATURES; GRAIN BOUNDARY SLIDING; ACCOMMODATION; LIQUID PHASE ID HIGH-STRAIN RATES; ALUMINUM-ALLOY; BEHAVIOR AB Very high strain rate (also known as positive exponent) superplasticity in three mechanically alloyed IN9021, IN9052 and IN905XL aluminum alloys has been characterized over a wide range of strain rates between 10(-3) to 300 s(-1) in air at temperatures from 698 to 873 K. The temperature dependence of how stress, elongation and strain rate sensitivity exponent (m value) reveals that optimum superplasticity might occur at temperatures close to or above the melting point of each alloy. The presence of a liquid phase, resulting from the low melting point regions, as a result of solute segregation by mechanical alloying, is responsible for the observed positive exponent superplasticity. It is proposed that superplastic how at high strain rates is controlled by a grain boundary sliding mechanism accommodated with relaxing the stress concentration by isolated liquid phases at grain boundaries. Mechanically alloyed processing is a powerful method to produce the desired microstructures with not only fine grain size but also optimizing segregation in solute along boundaries, required for positive exponent superplasticity in aluminum alloys. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551. RP HIGASHI, K (reprint author), UNIV OSAKA PREFECTURE,COLL ENGN,DEPT MECH SYST ENGN,SAKAI,OSAKA 593,JAPAN. RI Nieh, Tai-Gang/G-5912-2011; Mukai, Toshiji/F-9570-2014; Totsukawa, Nobuhisa/D-2028-2017 OI Nieh, Tai-Gang/0000-0002-2814-3746; Mukai, Toshiji/0000-0002-9628-5762; NR 19 TC 2 Z9 2 U1 0 U2 0 PU JAPAN INST METALS PI SENDAI PA AOBA ARAMAKI, SENDAI 980, JAPAN SN 0916-1821 J9 MATER T JIM JI Mater. Trans. JIM PD FEB PY 1995 VL 36 IS 2 BP 317 EP 322 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QW626 UT WOS:A1995QW62600029 ER PT J AU NELSON, GW PERELSON, AS AF NELSON, GW PERELSON, AS TI MODELING DEFECTIVE INTERFERING VIRUS THERAPY FOR AIDS - CONDITIONS FOR DIV SURVIVAL SO MATHEMATICAL BIOSCIENCES LA English DT Article ID HUMAN-IMMUNODEFICIENCY-VIRUS; HIV-INFECTION; INSITU HYBRIDIZATION; PARTICLES; DISEASE; PATHOGENESIS; INDIVIDUALS; LYMPHOCYTES; REPLICATION; VARIANTS AB The administration of a genetically engineered defective interfering virus (DIV) that interferes with HIV-1 replication has been proposed as a therapy for HIV-1 infection and AIDS. The proposed interfering virus, which is designed to superinfect HIV-1 infected cells, carries ribozymes that cleave conserved regions in HIV-1 RNA that code for the viral envelope protein. Thus DIV infection of HIV-1 infected cells should reduce or eliminate viral production by these cells. The success of this therapeutic strategy will depend both on the intercellular interaction of DIV and HIV-1, and on the overall dynamics of virus and T cells in the body. To study these dynamical issues, we have constructed a mathematical model of the interaction of HIV-1, DIV, and CD4(+) cells in vivo. The results of both mathematical analysis and numerical simulation indicate that survival of the engineered DIV purely on a peripheral blood HIV-1 infection is unlikely. However, analytical results indicate that DIV might well survive on HIV-1 infected CD4(+) cells in lymphoid organs such as lymph nodes and spleen, or on other HIV-1 infected cells in these organs. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 31 TC 21 Z9 21 U1 0 U2 1 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0025-5564 J9 MATH BIOSCI JI Math. Biosci. PD FEB PY 1995 VL 125 IS 2 BP 127 EP 153 DI 10.1016/0025-5564(94)00021-Q PG 27 WC Biology; Mathematical & Computational Biology SC Life Sciences & Biomedicine - Other Topics; Mathematical & Computational Biology GA QC859 UT WOS:A1995QC85900001 PM 7881191 ER PT J AU ALMAN, DE STOLOFF, NS AF ALMAN, DE STOLOFF, NS TI THE EFFECT OF NIOBIUM MORPHOLOGY ON THE FRACTURE-BEHAVIOR OF MOSI2 NB COMPOSITES SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID EMBEDDED FIBER LENGTH; ELASTIC MATRIX; DUCTILE-PHASE; PULL-OUT; TOUGHNESS; INTERMETALLICS; REINFORCEMENT AB The morphology of the niobium reinforcement added to MoSi2 affected the fracture behavior (and hence toughness) of MoSi2/20 vol pet Nb composites. The addition of discontinuous random niobium in the form of particles or short fibers deflected cracks that propagated through the MoSi2 matrix. However, this did not result in any improvements in toughness (estimated from the area under flexural stress-displacement curves), as matrix cracks preferentially propagated through the Nb/MoSi2 interphase region. The addition of aligned niobium fibers, oriented perpendicular to the direction of matrix crack propagation, directly participated in the fracture of the composite. Depending on the diameter of Nb embedded in the MoSi2 matrix, these fibers either fractured in a brittle manner or ruptured in a ductile manner. Small (400-mu m) diameter continuously aligned Nb fibers fractured by brittle cleavage during testing. Therefore, the addition of these fibers was not as effective in improving the toughness of MoSi2 as the addition of larger (800-mu m) diameter continuously aligned Nb fibers, which ruptured in a ductile manner. It was observed that the larger diameter fibers had separated from the matrix through the propagation of cracks in the reaction zone adjacent to the fibers and that these cracks formed prior to yielding of these fibers. In contrast, the smaller diameter fibers remained well bonded to the matrix and, thus, were constrained by the MoSi2 matrix from yielding. This resulted in brittle fracture behavior of the Nb fiber. There appeared to be an effect of aspect ratio on the fracture of the ductile embedded fibers. Shorter length 400-mu m-diameter fibers separated from the matrix, behavior similar to the continuous 800-mu m-diameter fibers and not the continuous 400-mu m-diameter fibers. C1 US BUR MINES,ALBANY RES CTR,ALBANY,OR 97321. RP ALMAN, DE (reprint author), RENSSELAER POLYTECH INST,DEPT MAT ENGN,TROY,NY 12181, USA. NR 28 TC 15 Z9 16 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD FEB PY 1995 VL 26 IS 2 BP 289 EP 303 DI 10.1007/BF02664667 PG 15 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QC367 UT WOS:A1995QC36700006 ER PT J AU FENDORF, M POWERS, M GRONSKY, R AF FENDORF, M POWERS, M GRONSKY, R TI PREPARATION OF OXIDE SUPERCONDUCTOR SPECIMENS FOR TEM EXAMINATION SO MICROSCOPY RESEARCH AND TECHNIQUE LA English DT Article DE CLEAVING; ION BEAM THINNING; ION MILLING; ULTRAMICROTOMY; JET POLISHING ID TRANSMISSION ELECTRON-MICROSCOPY; MICROWAVE SURFACE-RESISTANCE; YBA2CU3O7 THIN-FILMS; HIGH OXYGEN-PRESSURE; CU-O SYSTEM; DIRECT PRECIPITATION; TEMPERATURE; DEFECTS AB We have investigated a wide variety of oxide superconductors and report here on a number of techniques that can be effectively used to prepare transmission electron microscopy (TEM) specimens from these materials. Crushing, cleaving, ion milling, ultramicrotomy, and jet polishing all were successfully utilized, and details of each technique, as well as equipment used, are described. Selection among these methods depends both on the starting form of the material and the information required. Ion milling and crushing generally give the best results and have the widest applicability in our particular work, while crushing and cleaving involve the least equipment cost. In some cases, particularly with ion milling and jet polishing, small variations in the details of preparation have a dramatic effect on the success rate. We have found it to be a great advantage that the same techniques can be applied in a similar manner to a whole range of oxide materials, even (with some refinements and special precautions) to those that are extremely oxygen or moisture sensitive. (C) 1995 Wiley-Liss, Inc.* C1 HEWLETT PACKARD CORP,SANTA ROSA,CA 95403. UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,NATL CTR ELECTRON MICROSCOPY,BERKELEY,CA 94720. RP FENDORF, M (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,STACY GRP,BERKELEY,CA 94720, USA. NR 51 TC 2 Z9 2 U1 1 U2 4 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1059-910X J9 MICROSC RES TECHNIQ JI Microsc. Res. Tech. PD FEB 1 PY 1995 VL 30 IS 2 BP 167 EP 180 DI 10.1002/jemt.1070300207 PG 14 WC Anatomy & Morphology; Biology; Microscopy SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics; Microscopy GA QH528 UT WOS:A1995QH52800006 PM 7711328 ER PT J AU WYROBEK, A LOWE, X PINKEL, D BISHOP, J AF WYROBEK, A LOWE, X PINKEL, D BISHOP, J TI ANEUPLOIDY IN LATE-STEP SPERMATIDS OF MICE DETECTED BY 2-CHROMOSOME FLUORESCENCE IN-SITU HYBRIDIZATION SO MOLECULAR REPRODUCTION AND DEVELOPMENT LA English DT Article DE MURINE; SPERMATIDS; ANEUPLOIDY; DNA PROBES; FLUORESCENCE IN SITU HYBRIDIZATION (FISH) ID EMBRYOS FERTILIZED INVITRO; MOUSE SPERMATOCYTES; INDUCTION; CELLS; GERM; DROSOPHILA; FREQUENCY; INVIVO; NTA AB A multicolor procedure employing fluorescence in situ hybridization is described for detecting chromosomal domains and germinal aneuploidy in late-step spermatids in mice using DNA probes specific for repetitive sequences near the centromeres of chromosomes 8 and X. These probes were nick-translated with biotin- or digoxigenin-labeled nucleotides, and were detected with FITC or rhodamine. Probe and hybridization specificities were confirmed using metaphase chromosomes from spleen and bone marrow cells as well as from primary and secondary spermatocytes. Late-step spermatids, identified in testicular preparations by their hooked shape, yielded compact fluorescence domains in similar to 50% and >99% of cells when hybridized with probes for chromosomes X and 8, respectively. In a survey of >80,000 late-step spermatids from 8 healthy young adult C57BL/6 or B6C3F1 mice, similar to 3/10,000 spermatids had fluorescence phenotypes indicative of X-X or 8-8 hyperhaploidy. These frequencies are consistent with published frequencies of aneuploidy in meiotic metaphase II and first cleavage metaphases of the mouse, providing preliminary validation of sperm hybridization for the detection of aneuploidy. No significant animal or strain differences were observed. In addition, the hyperhaploidy frequencies for murine spermatids were indistinguishable for those for sperm from healthy men obtained by a similar hybridization procedure. These procedures for detecting aneuploid male gametes are examples of ''bridging biomarkers'' between human and animal studies. They have promising applications for investigations of the genetic, reproductive, and toxicological factors leading to abnormal reproductive outcomes of paternal origin, (C) 1995 Wiley-Liss, Inc. C1 UNIV CALIF SAN FRANCISCO,DIV MOLEC CYTOMETRY,SAN FRANCISCO,CA 94143. NATL INST ENVIRONM HLTH SCI,RES TRIANGLE PK,NC. RP WYROBEK, A (reprint author), LAWRENCE LIVERMORE NATL LAB,BIOL & BIOTECHNOL RES PROGRAM L452,LIVERMORE,CA 94550, USA. FU NIEHS NIH HHS [Y01-ES-10203-00] NR 26 TC 25 Z9 25 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1040-452X J9 MOL REPROD DEV JI Mol. Reprod. Dev. PD FEB PY 1995 VL 40 IS 2 BP 259 EP 266 DI 10.1002/mrd.1080400216 PG 8 WC Biochemistry & Molecular Biology; Cell Biology; Developmental Biology; Reproductive Biology SC Biochemistry & Molecular Biology; Cell Biology; Developmental Biology; Reproductive Biology GA QJ182 UT WOS:A1995QJ18200015 PM 7766420 ER PT J AU BECHER, PF HWANG, SL HSUEH, CH AF BECHER, PF HWANG, SL HSUEH, CH TI USING MICROSTRUCTURE TO ATTACK THE BRITTLE NATURE OF SILICON-NITRIDE CERAMICS SO MRS BULLETIN LA English DT Article RP BECHER, PF (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,STRUCT CERAM GRP,RES STAFF,POB 2008,OAK RIDGE,TN 37831, USA. RI Hsueh, Chun-Hway/G-1345-2011 NR 16 TC 53 Z9 55 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0883-7694 J9 MRS BULL JI MRS Bull. PD FEB PY 1995 VL 20 IS 2 BP 23 EP 27 PG 5 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA QH534 UT WOS:A1995QH53400003 ER PT J AU ZHEN, W DENAULT, CM LOVISCEK, K WALTER, S GENG, L VAUGHAN, ATM AF ZHEN, W DENAULT, CM LOVISCEK, K WALTER, S GENG, L VAUGHAN, ATM TI THE RELATIVE RADIOSENSITIVITY OF TK6 AND WI-L2-NS LYMPHOBLASTOID-CELLS DERIVED FROM A COMMON SOURCE IS PRIMARILY DETERMINED BY THEIR P53 MUTATIONAL STATUS SO MUTATION RESEARCH LETTERS LA English DT Article DE APOPTOSIS; P53; RADIOSENSITIVITY ID RADIATION-INDUCED APOPTOSIS; FLOW-CYTOMETRY; IRRADIATION; EXPRESSION; LINES AB The lymphoblastoid cell lines WI-L2-NS and TK6 were derived from a non-clonal pool of cells taken from a human spleen. Despite their common background they exhibit marked differences in radiosensitivities; D-0 values of 93 and 67 cGy have been reported for WI-L2-NS and TK6 cells respectively. We show here that this differential radiosensitivity is due to a decreased ability of the WI-L2-NS cell line to undergo radiation-induced apoptosis. Further, the WI-L2-NS cell line overexpresses the p53 gene product as a result of a mutation in codon 237 of the p53 gene. These data indicate that WI-L2-NS cells through disruption of normal p53 function are unable to engage the radiation-induced apoptosis program and so are relatively radioresistant. C1 EDWARD HINES VET ADM MED CTR,LOYOLA HINES DEPT RADIOTHERAPY,HINES,IL 60141. ARGONNE NATL LAB,CTR MECHANIST BIOL & BIOTECHNOL,ARGONNE,IL 60439. FU NCI NIH HHS [CA55840] NR 28 TC 63 Z9 65 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-7992 J9 MUTAT RES LETT JI Mutat. Res. Lett. PD FEB PY 1995 VL 346 IS 2 BP 85 EP 92 DI 10.1016/0165-7992(95)90055-1 PG 8 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA QL238 UT WOS:A1995QL23800004 PM 7885404 ER PT J AU FOUGERE, GE WEERTMAN, JR SIEGEL, RW AF FOUGERE, GE WEERTMAN, JR SIEGEL, RW TI PROCESSING AND MECHANICAL-BEHAVIOR OF NANOCRYSTALLINE FE SO NANOSTRUCTURED MATERIALS LA English DT Article; Proceedings Paper CT Special MRS Symposium on Molecularly Designed Ultrafine Nanostructured Materials CY APR, 1994 CL SAN FRANCISCO, CA ID CU; PD AB Nanocrystalline Fe samples have been produced by inert gas condensation and warm compaction with a new consolidation device. The new consolidation device was designed and built to reduce the processing defect population inherent in samples produced ill an earlier device and to minimize contamination. The Vickers microhardness of nanocrystalline Fe, while still strongly dependent upon porosity, is 3 to 7 times the microhardness of coarse-grained Fe. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP FOUGERE, GE (reprint author), NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60208, USA. RI Weertman, Julia/B-7540-2009 NR 15 TC 74 Z9 75 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0965-9773 J9 NANOSTRUCT MATER JI Nanostruct. Mater. PD FEB PY 1995 VL 5 IS 2 BP 127 EP 134 DI 10.1016/0965-9773(95)00021-6 PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA QW482 UT WOS:A1995QW48200003 ER PT J AU MITRA, A CHEN, ZJ JILES, DC AF MITRA, A CHEN, ZJ JILES, DC TI NONDESTRUCTIVE MAGNETIC MEASUREMENTS IN WELD AND BASE METALS OF SERVICE EXPOSED CR-MO STEEL SO NDT & E INTERNATIONAL LA English DT Article DE MAGNETIC HYSTERESIS; BARKHAUSEN EFFECT; BASE AND WELD METALS AB Magnetic hysteresis and micromagnetic Barkhausen parameters were measured in base and weld metals of a service exposed Cr-Mo steel. Although the coercivity was higher in the welds, the difference in hysteresis parameters between welds and base metals was small. Hence, hysteresis parameters were not suitable to distinguish service exposed weld and base metals. However, a significant variation in Barkhausen waveforms was observed between base and weld metals. The difference in Barkhausen activity was most prominent at low magnetizing fields. The results of this study have been correlated with the microstructure of the samples. C1 NATL MET LAB,MAGNET GRP,JAMSHEDPUR 831007,BIHAR,INDIA. RP MITRA, A (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. RI Jiles, David/H-9548-2012; Sahu, Anjani/E-7590-2015 NR 15 TC 11 Z9 11 U1 1 U2 2 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0963-8695 J9 NDT&E INT JI NDT E Int. PD FEB PY 1995 VL 28 IS 1 BP 29 EP 33 DI 10.1016/0963-8695(94)00002-2 PG 5 WC Materials Science, Characterization & Testing SC Materials Science GA QP041 UT WOS:A1995QP04100005 ER PT J AU SKINNER, CH ADLER, H BUDNY, RV KAMPERSCHROER, JH JOHNSON, LC RAMSEY, AT STOTLER, DP AF SKINNER, CH ADLER, H BUDNY, RV KAMPERSCHROER, JH JOHNSON, LC RAMSEY, AT STOTLER, DP TI FIRST MEASUREMENTS OF TRITIUM RECYCLING IN TFTR SO NUCLEAR FUSION LA English DT Article ID FUSION TEST REACTOR; H-ALPHA; ELECTRON-IMPACT; SPECTROSCOPIC MEASUREMENTS; TOKAMAK; DEUTERIUM; TRANSPORT; HYDROGEN; EMISSION; LIMITERS AB The first spectroscopic measurements of tritium Balmer alpha (T-alpha) emission from a fusion plasma were made on TFTR using a Fabry-Perot interferometer. The tritium alpha (T-alpha) emission line is partially blended with the deuterium alpha (D-alpha) line, commonly used in edge plasma diagnostics, and the contributions of H-alpha, D-alpha and T-alpha are separated by spectral analysis. The data are a measure of the fuelling of the plasma by tritium accumulated in the TFTR limiter, as well as the amount of neutral tritium generated by charge exchange of plasma ions. The T-alpha line first became detectable in a high power, tritium only, neutral beam injection discharge at the level of T-alpha/(H-alpha + D-alpha + T-alpha) = 2%. Subsequently this ratio has increased to as high as 7.5%. Data on the time evolution of the T-alpha emission during a single discharge and over a series of tritium and deuterium discharges are presented. RP SKINNER, CH (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. RI Stotler, Daren/J-9494-2015 OI Stotler, Daren/0000-0001-5521-8718 NR 39 TC 20 Z9 20 U1 1 U2 5 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5 PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD FEB PY 1995 VL 35 IS 2 BP 143 EP 151 DI 10.1088/0029-5515/35/2/I04 PG 9 WC Physics, Fluids & Plasmas SC Physics GA QM380 UT WOS:A1995QM38000004 ER PT J AU YOKOYAMA, M WAKATANI, M SHAING, KC AF YOKOYAMA, M WAKATANI, M SHAING, KC TI NONLINEAR INCOMPRESSIBLE POLOIDAL VISCOSITY AND ITS IMPLICATIONS FOR H-MODE IN STELLARATOR HELIOTRON PLASMAS SO NUCLEAR FUSION LA English DT Article ID EDGE ELECTRIC-FIELD; ENGINEERING DESIGN; TOROIDAL PLASMAS; TRANSITION; TOKAMAK; PHYSICS; ROTATION; TURBULENCE; PARALLEL AB Non-linear incompressible poloidal viscosity is an important ingredient in understanding the L-H transition in both tokamaks and stellarators. Usually two or more local maxima in poloidal viscosity corresponding to this transition may appear in stellarator/heliotron devices. Depending on the relative magnitudes of the toroidal and helical components of the magnetic spectrum, the local maxima can occur at a poloidal E x B Mach number M(p) somewhat larger than \m - nq\/m, where E (B) is the electric (magnetic) field strength, m(n) is the poloidal (toroidal) mode number of the components of the \B\ spectrum and q is the safety factor. Non-linear incompressible viscosities for the plateau Pfirsch-Schluter regime are calculated for present and next generation stellarator/heliotron devices (Heliotron-E, CHS, LHD, W7-AS and W7-X) by using a magnetic spectrum near the edge region under the assumption of negligibly small parallel flow. The possibility of the occurrence of the L-H transition and the limitation due to the effect of the charge exchange momentum loss are discussed. When the ion-ion collision frequency and neutrals are reduced sufficiently, all these devices show a local maximum of poloidal viscosity at M(p) similar to 1. However, the reduction of the poloidal viscosity in the region beyond this maximum is not large compared with the tokamak case. C1 KYOTO UNIV,PLASMA PHYS LAB,UJI,JAPAN. OAK RIDGE NATL LAB,OAK RIDGE,TN. RP YOKOYAMA, M (reprint author), KYOTO UNIV,FAC ENGN,DEPT NUCL ENGN,SAKYO KU,KYOTO,JAPAN. NR 27 TC 1 Z9 1 U1 0 U2 1 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5 PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD FEB PY 1995 VL 35 IS 2 BP 153 EP 161 DI 10.1088/0029-5515/35/2/I05 PG 9 WC Physics, Fluids & Plasmas SC Physics GA QM380 UT WOS:A1995QM38000005 ER PT J AU ROME, JA AF ROME, JA TI ORBIT TOPOLOGY IN CONVENTIONAL STELLARATORS IN THE PRESENCE OF ELECTRIC-FIELDS SO NUCLEAR FUSION LA English DT Article ID TRANSPORT AB Orbits are considered in conventional stellarators (i.e. with helical coils) using Boozer co-ordinates. The Advanced Toroidal Facility (ATF) in Oak Ridge, Tennessee, will be used as an example to study the effects of its configurational flexibility on orbit topology. It is shown that the symplectic integration technique yields superior results for single particle orbits. These orbits will be compared with predictions using the J* invariant. J* conservation allows examination and understanding of the global stellarator topology, both with and without radial electric fields. RP ROME, JA (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN, USA. NR 15 TC 25 Z9 25 U1 0 U2 0 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5 PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD FEB PY 1995 VL 35 IS 2 BP 195 EP 206 DI 10.1088/0029-5515/35/2/I09 PG 12 WC Physics, Fluids & Plasmas SC Physics GA QM380 UT WOS:A1995QM38000009 ER PT J AU ZWICKER, APP ISLER, RC TIGHE, W PAUL, SF ONO, M LEBLANC, B BELL, RE KUGEL, HW KAITA, R AF ZWICKER, APP ISLER, RC TIGHE, W PAUL, SF ONO, M LEBLANC, B BELL, RE KUGEL, HW KAITA, R TI IMPURITY BEHAVIOR DURING ION BERNSTEIN WAVE HEATING IN THE PBX-M TOKAMAK SO NUCLEAR FUSION LA English DT Letter ID PLASMAS AB Ion Bernstein wave heating (IBWH) is used in the PBX-M tokamak to investigate active control of the pressure profile. A series of experiments was carried out to study impurity behaviour during IBWH under various discharge conditions. In all cases, impu rity concentration increased and impurity transport was affected by application of IBWH. Core particle confinement was found to rise during IBWH, which resulted in an increase in the inward convective flow of impurities. Real time boronization of the vacuum vessel was successful in decreasing the overall impurity concentration. C1 OAK RIDGE NATL LAB,DIV FUS ENERGY,OAK RIDGE,TN 37831. PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08543. NR 13 TC 0 Z9 0 U1 0 U2 0 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5 PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD FEB PY 1995 VL 35 IS 2 BP 215 EP 223 DI 10.1088/0029-5515/35/2/I12 PG 9 WC Physics, Fluids & Plasmas SC Physics GA QM380 UT WOS:A1995QM38000012 ER PT J AU BARLETTA, WA CHATTOPADHYAY, S CHEN, P GINZBURG, I KIM, KJ PALMER, R SESSLER, AM AF BARLETTA, WA CHATTOPADHYAY, S CHEN, P GINZBURG, I KIM, KJ PALMER, R SESSLER, AM TI LINEAR COLLIDERS WITH GAMMA-GAMMA COLLISIONS - AN INTRODUCTION SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305. BUDKER INST NUCL PHYS,NOVOSIBIRSK,RUSSIA. RP BARLETTA, WA (reprint author), LAWRENCE BERKELEY LAB,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 0 TC 9 Z9 9 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 FEB 1 PY 1995 VL 355 IS 1 BP 1 EP 2 DI 10.1016/0168-9002(94)01172-9 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700002 ER PT J AU BRODSKY, SJ ZERWAS, PM AF BRODSKY, SJ ZERWAS, PM TI HIGH-ENERGY PHOTON-PHOTON COLLISIONS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB ID DEEP INELASTIC-SCATTERING; HEAVY-QUARK PRODUCTION; LARGE-TRANSVERSE-MOMENTUM; QUANTUM CHROMODYNAMICS; LINEAR COLLIDER; BOSON PRODUCTION; GAMMA-COLLISIONS; SUM-RULE; BEAMSTRAHLUNG; PARTICLES AB The collisions of high energy photons produced at an electron-positron collider provide a comprehensive laboratory for testing QCD, electroweak interactions, and extensions of the standard model. The luminosity and energy of the colliding photons produced by backscattering laser beams is expected to be comparable to that of the primary e+ e- collisions. In this overview, we shall focus on tests of electroweak theory in photon-photon annihilation, particularly gamma gamma --> W+ W-, gamma gamma --> Higgs bosons, and higher-order loop processes, such as gammagamma --> gammagamma, Zgamma and ZZ. Since each photon can be resolved into a W+ W- pair, high energy photon-photon collisions can also provide a remarkably background-free laboratory for studying WW collisions and annihilation. We also review high energy gammagamma tests of quantum chromodynamics, such as the scaling of the photon structure function, tt production, mini-jet processes, and diffractive reactions. C1 DEUTSCH ELEKTRONEN SYNCHROTRON DESY,D-22603 HAMBURG,GERMANY. RP BRODSKY, SJ (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 173 TC 33 Z9 33 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 FEB 1 PY 1995 VL 355 IS 1 BP 19 EP 41 DI 10.1016/0168-9002(94)01174-5 PG 23 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700004 ER PT J AU CHANOWITZ, MS AF CHANOWITZ, MS TI PHYSICS AT HIGH-ENERGY PHOTON-PHOTON COLLIDERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB ID BOSON PRODUCTION; LINEAR COLLIDER; GAMMA AB I review the physics prospects for high energy photon colliders, emphasizing results presented at the LBL Gamma Gamma Collider Workshop. Advantages and difficulties are reported for studies of QCD, the electroweak gauge sector, supersymmetry, and electroweak symmetry breaking. RP CHANOWITZ, MS (reprint author), LAWRENCE BERKELEY LAB,THEORET PHYS GRP,BERKELEY,CA 94720, USA. NR 46 TC 7 Z9 7 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 FEB 1 PY 1995 VL 355 IS 1 BP 42 EP 49 DI 10.1016/0168-9002(94)01175-3 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700005 ER PT J AU BERGER, MS CHANOWITZ, MS AF BERGER, MS CHANOWITZ, MS TI STRONG WW SCATTERING AT PHOTON LINEAR COLLIDERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB ID STRONG W+W+ SCATTERING; INTERACTING WS; ZS; THEOREMS AB We investigate the possibility of observing strong interactions of longitudinally polarized weak vector bosons in the process gammagamma --> ZZ at a photon linear collider. We make use of polarization of the photon beams and cuts on the decay products of the Z bosons to enhance the signal relative to the background of transversely polarized ZZ pairs. We find that the background overwhelms the signal unless there are strong resonant effects, as for instance from a technicolor analogue of the hadronic f2(1270) meson. C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP BERGER, MS (reprint author), UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706, USA. NR 24 TC 7 Z9 7 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 FEB 1 PY 1995 VL 355 IS 1 BP 52 EP 56 DI 10.1016/0168-9002(94)01177-X PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700007 ER PT J AU CHEN, P HORTONSMITH, G OHGAKI, T WEIDEMANN, AW YOKOYA, K AF CHEN, P HORTONSMITH, G OHGAKI, T WEIDEMANN, AW YOKOYA, K TI CAIN - CONGLOMERAT-DABEL-ET-DINTERACTIONS-NON-LINEAIRES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB ID COLLIDERS AB We present our plans for a Monte-Carlo code simulating all possible combinations of (electromagnetic) interactions between colliding electron, positron, and both high-energy and laser photon beams, based on the ABEL code for beam-beam interaction. The implementation and first results for the laser-e- interaction are described. C1 HIROSHIMA UNIV,DEPT PHYS,HIGASHIHIROSHIMA 724,JAPAN. KEK,NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN. UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. RP CHEN, P (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. RI Horton-Smith, Glenn/A-4409-2011 OI Horton-Smith, Glenn/0000-0001-9677-9167 NR 11 TC 43 Z9 44 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 FEB 1 PY 1995 VL 355 IS 1 BP 107 EP 110 DI 10.1016/0168-9002(94)01186-9 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700016 ER PT J AU CLAYTON, CE KURNIT, NA MEYERHOFER, DD AF CLAYTON, CE KURNIT, NA MEYERHOFER, DD TI APPLICATION OF CONVENTIONAL LASER TECHNOLOGY TO GAMMA-GAMMA COLLIDERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB ID CHIRPED-PULSE-AMPLIFICATION; SOLID-STATE LASERS; AVERAGE POWER AB A future e- -e+ (electron-positron) linear collider can be configured with perhaps minimal modification to serve as an gamma-gamma (gamma-gamma) or a e- -gamma collider. This is accomplished by Compton-backscattering low energy photons (from a laser source) off of the high-energy electron beams prior to the crossing of the electron beams. However, to be competitive with the e- -e+ configuration, the luminosity cannot be compromised in the process. This requires that the laser source deliver a sufficient number of photons per pulse with a pulse format and rate matching that of the electron beams. As it turns out, this requires an average optical power of 5-15 kW from the laser which is beyond the current state of the art. In this paper, we address how to generate the required pulse format and how the high average power requirement can be met with conventional laser technology. We also address concerns about the survivability of mirrors located near the interaction point. Finally, we list a program of research and development which addresses some of the unknowns in such a system. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV ROCHESTER,DEPT MECH ENGN,ROCHESTER,NY 14627. RP CLAYTON, CE (reprint author), UNIV CALIF LOS ANGELES,DEPT ELECT ENGN,LOS ANGELES,CA 90024, USA. NR 26 TC 10 Z9 10 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD FEB 1 PY 1995 VL 355 IS 1 BP 121 EP 129 DI 10.1016/0168-9002(94)01190-7 PG 9 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700019 ER PT J AU CHEN, PS BULLOCK, D YU, D AF CHEN, PS BULLOCK, D YU, D TI A LASER REFLECTOR FOR MULTI-BUNCH GAMMA CONVERSIONS IN A GAMMA-GAMMA COLLIDER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB AB One of the main challenges for a high energy gammagamma collider is the high repetition rate required for the laser-electron-beam collisions to convert into high energy gamma beams. State-of-the-art, high power lasers have a much lower repetition rate than that of the electron pulses. It is therefore highly desirable that the same laser pulse can be reused. As an example, for NLC where beams collide at 120 Hz, within each collision cycle there are 90 electron bunches separated by 1.4 ns between successive bunches. We show, by invoking a recently invented laser optical box, that the laser pulses can be resused for the entire train of bunches within each collision cycle. C1 DULY RES INC,RANCHO PALOS VERDES,CA 90275. RP CHEN, PS (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 5 TC 3 Z9 3 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 FEB 1 PY 1995 VL 355 IS 1 BP 130 EP 132 DI 10.1016/0168-9002(94)01191-5 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700020 ER PT J AU MORTON, P CHATTOPADHYAY, S AF MORTON, P CHATTOPADHYAY, S TI FREE-ELECTRON LASERS FOR GAMMA-GAMMA COLLIDERS - A SUMMARY SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Editorial Material CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB C1 LAWRENCE BERKELEY LAB,CTR BEAM PHYS,BERKELEY,CA 94720. NR 3 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD FEB 1 PY 1995 VL 355 IS 1 BP 138 EP 141 DI 10.1016/0168-9002(94)01193-1 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700022 ER PT J AU PALMER, RB AF PALMER, RB TI ACCELERATOR PARAMETERS FOR GAMMA-GAMMA COLLIDERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB C1 STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP PALMER, RB (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 2 TC 2 Z9 2 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 FEB 1 PY 1995 VL 355 IS 1 BP 150 EP 153 DI 10.1016/0168-9002(94)01195-8 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700024 ER PT J AU XIE, M KIM, KJ SESSLER, A AF XIE, M KIM, KJ SESSLER, A TI CRAB CROSSING IN A GAMMA-GAMMA COLLIDER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB AB The crabbing of an incident photon beam from a laser, and the electron beam with which it interacts at the conversion point, is shown to have the same efficiency as in head-on Compton scattering, but with the advantages of a crossing geometry. The resulting gamma-ray beam is also crabbed, which allows for a crossing collision point, while maintaining the luminosity at the same value it would have in a head-on collision. RP XIE, M (reprint author), LAWRENCE BERKELEY LAB,CTR BEAM PHYS,BERKELEY,CA 94720, USA. NR 5 TC 2 Z9 2 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 FEB 1 PY 1995 VL 355 IS 1 BP 163 EP 165 DI 10.1016/0168-9002(94)01198-2 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700027 ER PT J AU NOREM, J AF NOREM, J TI PLASMA LENS FORMATION IN E-GAMMA AND GAMMA-GAMMA-COLLIDERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB AB The beams in electron linear colliders can be converted to nearly monochromatic photon beams by means of Compton backscattering of laser photons. The electron beams must then be diverted from the interaction point by some means, the best of which seems to be a plasma lens. This paper describes the constraints on the plasma lens in this application and shows how the ablation of solid hydrogen pellets might be able to produce plasmas to satisfy these constraints. RP NOREM, J (reprint author), ARGONNE NATL LAB,DIV HEP,ARGONNE,IL 60439, USA. NR 5 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 FEB 1 PY 1995 VL 355 IS 1 BP 166 EP 168 DI 10.1016/0168-9002(94)01199-0 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700028 ER PT J AU RAJAGOPALAN, S CLINE, DB CHEN, PS AF RAJAGOPALAN, S CLINE, DB CHEN, PS TI APPLICATION OF A PLASMA LENS TO GAMMA COLLIDERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB ID LINEAR COLLIDERS C1 STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP RAJAGOPALAN, S (reprint author), UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024, USA. NR 5 TC 8 Z9 8 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 FEB 1 PY 1995 VL 355 IS 1 BP 169 EP 170 DI 10.1016/0168-9002(94)01200-8 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700029 ER PT J AU SPENCER, JE AF SPENCER, JE TI USES OF A PROTOTYPE NLC GLC SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT Workshop on Gamma-Gamma Colliders CY MAR 28-31, 1994 CL LAWRENCE BERKELEY LAB, BERKELEY, CA SP LAWRENCE BERKELEY LAB, ACCELERATOR & FUS RES DIV, CTR BEAM PHYS, US DOE, NATL SCI FDN, INT SCI FDN, AMER PHYS SOC, INT COMM FUTURE ACCELERATORS HO LAWRENCE BERKELEY LAB ID BOSON AB The assumption is made that before the next linear collider is approved, a working prototype or demonstration model will be necessary. Also, that an NLC will have to be planned sufficiently well to provide all of the important, foreseeable physics over some energy range that can be extended well into the TeV region. This synoptic view implies a general purpose linear collider that provides e--> +/- e-->+/-, gammae-->-->+/- and gammagamma-->--> incident channels that can produce a full range of J(q ... qBAR)PC states, leptoquarks J(l...qBAR),PC supersymmetric particles, top or Higgs. This GLC is discussed together with a phased development leading up to such a machine. it is argued that new physics is available over a range of energies from a few GeV upwards of 60 GeV or so by using the SLC and other facilities at SLAC for comparatively little cost. Also, because current ideas about the NLC can be upgraded at very little incremental cost this seems the most realistic way to achieve an NLC. It also provides some unique practical developments such as high rep-rate and high peak-power FELs into the UV range and beyond. The achievable physics includes most of the major HEP being discussed today such as new hadrons, quark molecules, glueballs and studies of the SM and MSSM. Some consideration is also given to whether this physics is achievable elsewhere e.g. at existing ring colliders. With increasing energy, strong field effects become increasingly important in all incident channels. We discuss these and how they arise in order to certify the extension of these channels to TeV energies. The nonperturbative, multiphoton Compton and Breit-Wheeler processes are also discussed for producing polarized gamma--> and e--> +/- beams as well as beam-beam backgrounds. One advantage of strong fields is the possibility of 'target-free' production of highly polarized, high brightness gamma--> and e--> +/- beams. Finally, problems associated with producing and colliding independent, micron-size beams in the strong field regime are discussed. RP SPENCER, JE (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 35 TC 3 Z9 3 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 FEB 1 PY 1995 VL 355 IS 1 BP 184 EP 194 DI 10.1016/0168-9002(94)01201-6 PG 11 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700031 ER PT J AU CHATTOPADHYAY, S SESSLER, AM AF CHATTOPADHYAY, S SESSLER, AM TI GAMMA-GAMMA COLLIDERS - PROCEEDINGS OF THE WORKSHOP ON GAMMA-GAMMA COLLIDERS LAWRENCE-BERKELEY-LABORATORY BERKELEY, CA, USA, MARCH 28-31, 1994 - FOREWORD SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Editorial Material RP CHATTOPADHYAY, S (reprint author), LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 0 TC 2 Z9 2 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 FEB 1 PY 1995 VL 355 IS 1 BP R7 EP R7 DI 10.1016/0168-9002(95)92049-8 PG 1 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA QF207 UT WOS:A1995QF20700001 ER PT J AU BEARD, CA BELYAKOVBODIN, VI AF BEARD, CA BELYAKOVBODIN, VI TI COMPARISON OF ENERGY DEPOSITION CALCULATIONS BY THE LAHET CODE SYSTEM WITH EXPERIMENTAL RESULTS SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID CALORIMETRIC MEASUREMENTS; PROTONS; TARGETS AB A comparison was performed between the energy deposition predicted by the LAHET code system (LCS) and experimental values for 800-, 1000-, and 1200-MeV protons on targets composed of beryllium, carbon, aluminum, iron, copper, lead, bismuth, and uranium. The lead, bismuth, and uranium targets showed agreement within similar to 10% at locations throughout the targets, and the agree ment of the total energy deposited over the axial length of the targets ranged from 1 to 18%. For the lighter materials, the agreement at locations throughout the target was within similar to 25%. No definable trend could be determined for the lighter materials because some LCS predictions were greater and some were less than the experimental results, and some showed very good agreement. Also, the LCS underpredicted the proton ranges for 800-MeV protons on iron, 800- and 1000-MeV protons on copper, and 800- and 1000-MeV protons on uranium. C1 INST THEORET & EXPTL PHYS,MOSCOW 117259,RUSSIA. RP BEARD, CA (reprint author), LOS ALAMOS NATL LAB,MAIL STOP F607,LOS ALAMOS,NM 87545, USA. NR 9 TC 3 Z9 3 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD FEB PY 1995 VL 119 IS 2 BP 87 EP 96 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA QE061 UT WOS:A1995QE06100001 ER PT J AU NAGEL, P RODENS, J BLANN, M GRUPPELAAR, H AF NAGEL, P RODENS, J BLANN, M GRUPPELAAR, H TI INTERMEDIATE-ENERGY NUCLEAR-REACTION CODE INTERCOMPARISON - APPLICATIONS TO TRANSMUTATION OF LONG-LIVED REACTOR WASTES SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID PRODUCTION CROSS-SECTIONS; NEUTRON EMISSION; MEV PROTONS; MODEL; ZR-90 AB Results are summarized of an international code comparison designed to test codes that may provide the necessary nuclear data to evaluate schemes for the accelerator-driven transmutation of long-lived reactor wastes. This comparison of intermediate energy nuclear reaction codes was organized by the Organization for Economic Cooperation and Development Nuclear Energy Agency (NEA) Nuclear Science Committee and presents results for thin-target double-differential (p,xn) and (p,xp) cross sections of Zr-90 and Pb-208 targets at incident energies of 25 to 1600 MeV. Here, results are presented primarily for Zr-90 targets, and indications are given of the degree of dependability of these codes for thin-target measurements by use of a few comparisons of calculated and experimental yields. Broader comparisons are presented in the final NEA report. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NETHERLANDS ENERGY RES FDN,1775 ZG PETTEN,NETHERLANDS. RP NAGEL, P (reprint author), NUCL ENERGY AGCY LE SEINE ST GERMAIN,ORG ECON COOPERAT & DEV,12 BLVD ILES,F-92130 ISSY MOULINEAUX,FRANCE. NR 24 TC 3 Z9 3 U1 1 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD FEB PY 1995 VL 119 IS 2 BP 97 EP 107 PG 11 WC Nuclear Science & Technology SC Nuclear Science & Technology GA QE061 UT WOS:A1995QE06100002 ER PT J AU KHAN, HJ CHENG, HS ROHATGI, US AF KHAN, HJ CHENG, HS ROHATGI, US TI INFLUENCE OF ISOLATION CONDENSERS ON BOILING WATER-REACTOR PERFORMANCE DURING AN ANTICIPATED TRANSIENT WITHOUT SCRAM SO NUCLEAR TECHNOLOGY LA English DT Article DE ISOLATION; ATWS; BWR AB The purpose of isolation condensers (ICs) in a boiling water reactor (BWR) is to passively control the reactor pressure by removing heat from the system during abnormal reactor operation. This type of control is expected to reduce the frequency of opening and closing of the safety relief valves (SRVs). In addition, the ICs are designed to remove the decay heat of the reactor system after reactor shutdown in case of a toss of coolant accident. Transient calculations of an anticipated transient without scram for a main steam isolation valve (MSIV) closure event were performed using the RAMONA-4B code with prescribed pressure setpoints for the SRVs and given time settings for the MSIV closure. It is demonstrated that the effect of the ICs is to reduce the rate of pressure rise and thereby decrease the cycling frequency of the SRVs. The onset of high-pressure coolant injection is delayed if an IC is functional. An analysis for natural circulation flow in a BWR indicates that the effect of an IC on the transient performance is similar to that for the forced circulation system. In this case, the MSIV closure results in a lower peak pressure because of the lower power level. RP KHAN, HJ (reprint author), BROOKHAVEN NATL LAB,DEPT ADV TECHNOL,UPTON,NY 11973, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD FEB PY 1995 VL 109 IS 2 BP 187 EP 206 PG 20 WC Nuclear Science & Technology SC Nuclear Science & Technology GA QD112 UT WOS:A1995QD11200002 ER PT J AU ADAMS, JP AF ADAMS, JP TI IODINE RELEASE DURING A STEAM-GENERATOR TUBE RUPTURE SO NUCLEAR TECHNOLOGY LA English DT Article DE SGTR; IODINE RELEASE; IODINE SPIKE AB The Nuclear Regulatory Commission requires utilities to determine the response of a pressurized water reactor to a steam generator tube rupture (SGTR) as part of the safety analysis for the plant. The SGTR analysis includes assumptions regarding the iodine concentration in the reactor coolant system (RCS) due to iodine spikes, primary flashing and bypass fractions, and iodine partitioning in the secondary coolant system (SCS). Experimental and analytical investigations have recently been completed wherein these assumptions were tested to determine whether and to what degree they were conservative (that is, whether they result in a calculated iodine source term that is at least as large or larger than that expected during an actual event). The current study has the objective to assess the overall effects of the results of these investigations on the calculated iodine soul ce term to the environment during an SGTR. To assist in this study, a computer program, DOSE, was written. This program uses a simple, nonmechanistic model to calculate the iodine source term to the environment during an SGTR as a function of water mass inventories, flow rates, and iodine concentrations in the RCS and SCS. The principal conclusion of this study is that the iodine concentration in the RCS is the dominant parameter because of the dominance of the primary flashing on the iodine source term. RP ADAMS, JP (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,DEPT ENGN RES & APPLICAT,POB 1625-3890,IDAHO FALLS,ID 83415, USA. NR 11 TC 2 Z9 2 U1 0 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD FEB PY 1995 VL 109 IS 2 BP 207 EP 215 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA QD112 UT WOS:A1995QD11200003 ER PT J AU LO, CM PALMER, BJ DROST, MK WELTY, JR AF LO, CM PALMER, BJ DROST, MK WELTY, JR TI INCORPORATION OF POLARIZATION EFFECTS IN MONTE-CARLO SIMULATIONS OF RADIATIVE HEAT-TRANSFER SO NUMERICAL HEAT TRANSFER PART A-APPLICATIONS LA English DT Article AB The electric field vector of individual photons has been incorporated into Monte Carlo simulations of radiative heat transfer to examine the effects of polarization on the optical properties of arrays of fixed discrete surfaces. Simulations are performed on arrays that have specular surfaces with high and low reflectivity. Two different arrays are illuminated by polarized and unpolarized light and compared with conventional Monte Carlo simulations. The results show that if the initial illumination is either partially or fully polarized, polarization effects are substantial, especially for low-reflectivity surfaces and for arrays that favor a large number of grazing-angle reflections. C1 PACIFIC NW LAB, DEPT ANALYT SCI, RICHLAND, WA 99352 USA. PACIFIC NW LAB, DEPT ENERGY SCI, RICHLAND, WA 99352 USA. OREGON STATE UNIV, CORVALLIS, OR 97331 USA. NR 7 TC 8 Z9 8 U1 0 U2 0 PU HEMISPHERE PUBL CORP PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 1040-7782 J9 NUMER HEAT TR A-APPL JI Numer. Heat Tranf. A-Appl. PD FEB PY 1995 VL 27 IS 2 BP 129 EP 142 DI 10.1080/10407789508913692 PG 14 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA QN143 UT WOS:A1995QN14300001 ER PT J AU KHOUNSARY, AM AF KHOUNSARY, AM TI HIGH HEAT-FLUX OPTICAL ENGINEERING SO OPTICAL ENGINEERING LA English DT Editorial Material RP KHOUNSARY, AM (reprint author), ARGONNE NATL LAB,DIV EXPTL FACILIT,ARGONNE,IL 60439, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 312 EP 312 DI 10.1117/12.210192 PG 1 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000002 ER PT J AU KIM, KJ AF KIM, KJ TI OPTICAL AND POWER CHARACTERISTICS OF SYNCHROTRON-RADIATION SOURCES SO OPTICAL ENGINEERING LA English DT Article DE HIGH HEAT FLUX; BENDING-MAGNET RADIATION; WIGGLER RADIATION; UNDULATOR RADIATION; HELICAL UNDULATOR ID UNDULATOR; WIGGLER; DESIGN AB The optical and the power characteristics of various synchrotron radiation sources are summarized. The optical characteristics-flux, brightness, coherence, polarization, etc.-determine the quality of the source for photon experiments. The power characteristics determine the heat load on beam-line elements. After discussing the cases of the bending magnet, wiggler, and undulator, the case of the helical undulator is considered separately, emphasizing its different power characteristics from the planar case. RP KIM, KJ (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR BEAM PHYS,DIV ACCELERATOR & FUS RES,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 25 TC 18 Z9 19 U1 1 U2 5 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 342 EP 352 DI 10.1117/12.194193 PG 11 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000007 ER PT J AU CHURCH, EL TAKACS, PZ AF CHURCH, EL TAKACS, PZ TI SPECIFICATION OF GLANCING-INCIDENCE AND NORMAL-INCIDENCE X-RAY MIRRORS SO OPTICAL ENGINEERING LA English DT Article DE HIGH HEAT FLUX; X-RAY MIRRORS; GLANCING- AND NORMAL-INCIDENCE GEOMETRIES ID FINISH; SURFACES; FIGURE AB We discuss the specification of x-ray mirror surfaces in terms of their imaging performance and express the results in terms of quantities that are directly accessible from laboratory profile measurements. Procedures are illustrated by strawman examples in glancing- and normal-incidence geometries. RP CHURCH, EL (reprint author), BROOKHAVEN NATL LAB,DIV INSTRUMENTAT,OPT METROL LAB,UPTON,NY 11973, USA. NR 18 TC 38 Z9 38 U1 4 U2 15 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 353 EP 360 DI 10.1117/12.196057 PG 8 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000008 ER PT J AU QIAN, S JARK, W TAKACS, PZ RANDALL, KJ YUN, WB AF QIAN, S JARK, W TAKACS, PZ RANDALL, KJ YUN, WB TI IN-SITU SURFACE PROFILER FOR HIGH HEAT LOAD MIRROR MEASUREMENT SO OPTICAL ENGINEERING LA English DT Article DE HIGH HEAT FLUX; OPTICAL METROLOGY; ULTRAHIGH VACUUM; BEAM LINES; PROFILOMETRY ID X-RAY MIRROR AB High heat loads on optical components in next-generation synchrotron radiation sources will require the use of sophisticated methods to prevent surface distortion that would degrade the intrinsic source brightness. In some cases it is desirable to be able to measure the mirror figure under actual operating conditions in ultrahigh vacuum. We propose to modify the standard long-trace profiler configuration to enable scanning profiler measurement of mirrors under actual high heat load conditions. The modification entails the use of a penta prism on a translation stage inside the vacuum chamber, with the optical head mounted outside the chamber. This configuration is similar to the original pencil-beam interferometer system developed by von Bieren, but it contains a number of modifications that enhance its accuracy. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. ARGONNE NATL LAB,ARGONNE,IL 60439. RP QIAN, S (reprint author), SINCROTRONE TRIESTE,PADRICIANO 99,I-34012 TRIESTE,ITALY. NR 19 TC 22 Z9 25 U1 4 U2 4 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 396 EP 402 DI 10.1117/12.194834 PG 7 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000012 ER PT J AU HOWELLS, MR AF HOWELLS, MR TI DESIGN STRATEGIES FOR MONOLITHIC ADJUSTABLE-RADIUS METAL MIRRORS SO OPTICAL ENGINEERING LA English DT Article DE HEAT FLUX; GRAZING-INCIDENCE MIRRORS; ADAPTIVE OPTICS; FLEXURAL HINGES; X-RAY FOCUSING; HIGH-POWER MIRRORS AB The design principles and special advantages of monolithic adjustable-radius metal mirrors are now well established. Such mirror systems are usually cut from a single block of metal by a wire-electric-discharge machining system, and they consist of a bendable mirror joined to its bending device by thin webs of metal that can be treated as hinges. Analysis is provided for understanding the response of such mirrors to the unintended couples they receive from these flexural hinges when the hinge angle is not zero. The rigidity (the couple per unit angle) of the usual types of flexural hinge and of the most common mirror shapes are calculated thus allowing the hinge-induced distortions of any mirror surface to be estimated. The analysis includes mirrors both with and without water-cooling channels. Two strategies for reducing the errors are proposed. One involves the design of sufficiently flexible hinges and the other the elimination of the hinge rotations (and therefore their couples) altogether by means of a new design principle. Some analysis of the latter scheme is provided including a prescription for choosing suitable design parameters. RP HOWELLS, MR (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,ADV LIGHT SOURCE,BERKELEY,CA 94720, USA. NR 9 TC 9 Z9 9 U1 1 U2 2 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 410 EP 417 DI 10.1117/12.195740 PG 8 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000014 ER PT J AU LEE, WK MILLS, DM ASSOUFID, L BLASDELL, RC FERNANDEZ, PB ROGERS, CS SMITHER, RK AF LEE, WK MILLS, DM ASSOUFID, L BLASDELL, RC FERNANDEZ, PB ROGERS, CS SMITHER, RK TI HIGH HEAT LOAD MONOCHROMATOR DEVELOPMENT AT THE ADVANCED PHOTON SOURCE SO OPTICAL ENGINEERING LA English DT Article DE HIGH HEAT FLUX; ADVANCED PHOTON SOURCE (APS); X-RAY MONOCHROMATOR OPTICS; COOLANTS; CRYSTAL GEOMETRIES; MATERIALS ID PERFORMANCE; UNDULATOR; OPTICS; BEAMS AB The Advanced Photon Source (APS) has embarked on a systematic program in high heat load x-ray monochromator optics to mitigate the thermal effects due to the powerful x-ray beams at third-generation synchrotron sources. This program includes both experimental and computational studies. The approaches being studied include the use of new coolants (cryogens and liquid gallium), new crystal geometries (inclined and variable asymmetric), and new materials (diamond). The paper summarizes the high heat load monochromator program at the APS. RP LEE, WK (reprint author), ARGONNE NATL LAB,DIV EXPTL FACILIT,ADV PHOTON SOURCE,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 38 TC 6 Z9 6 U1 1 U2 1 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 418 EP 425 DI 10.1117/12.194621 PG 8 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000015 ER PT J AU ARTHUR, J AF ARTHUR, J TI EXPERIENCE WITH MICROCHANNEL AND PIN-POST WATER COOLING OF SILICON MONOCHROMATOR CRYSTALS SO OPTICAL ENGINEERING LA English DT Article DE HIGH HEAT FLUX; X-RAY MONOCHROMATORS; SYNCHROTRON RADIATION; MICROCHANNELS; PIN-POST WATER COOLING ID PERFORMANCE AB Using special channel geometries, the efficiency of water cooling of silicon crystals at room temperature can be improved to the point where it becomes very attractive for use with x-ray monochromators at high-power synchrotron radiation beamlines. Prototype monochromators using two different geometries have been built and tested. The microchannel geometry uses long, parallel channels approximately 50 mu m in width. The pin-post geometry creates a two-dimensional network of submillimeter water passages. Both geometries have excellent thermal performance, though preparing strain-free crystal assemblies containing such small features remains problematic. When perfected, water cooling using microchannel or pin-post geometries should be particularly suited to monochromator crystals used at wiggler beamlines. RP STANFORD LINEAR ACCELERATOR CTR, STANFORD SYNCHROTRON RADIAT LAB, STANFORD, CA 94309 USA. NR 10 TC 3 Z9 3 U1 1 U2 2 PU SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA SN 0091-3286 EI 1560-2303 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 441 EP 444 DI 10.1117/12.195395 PG 4 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000018 ER PT J AU BRITTEN, JA BOYD, RD SHORE, BW AF BRITTEN, JA BOYD, RD SHORE, BW TI IN-SITU END-POINT DETECTION DURING DEVELOPMENT OF SUBMICROMETER GRATING STRUCTURES IN PHOTORESIST SO OPTICAL ENGINEERING LA English DT Article DE GRATING PERFORMANCE; PHOTORESIST; DIFFRACTION INTENSITY ID LATENT AB We describe a practical method for monitoring the evolution of the depth of grating structures exposed in photoresist during development of the resist. A diagnostic laser of nonexposing wavelength illuminates, through a quartz window, the grating surface immersed in developer solution. The intensity of the diffracted -1 order is monitored. The intensities vary with time due to feature growth by dissolution. Using realistic models for the shape of the grooves created, we predict grating efficiency versus feature geometry for the grating in both air and developer solution. This knowledge allows us to make a determination of the stopping point during development that gives us the maximum grating efficiency for operation in air. The shape of the efficiency curve versus time during development also makes possible the determination of complete dissolution of the grating troughs to the substrate. This real-time monitoring corrects for exposure and bake variations, for example, and it permits the recycling of developer solution and thus decreases the waste stream for grating manufacture. It also allows for the determination of the end point for deep (>500 nm) gratings that show multiple extrema during development. RP BRITTEN, JA (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 15 TC 17 Z9 21 U1 0 U2 3 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD FEB PY 1995 VL 34 IS 2 BP 474 EP 479 DI 10.1117/12.194046 PG 6 WC Optics SC Optics GA QF650 UT WOS:A1995QF65000023 ER PT J AU HAALAND, CM AF HAALAND, CM TI LASER ELECTRON ACCELERATION IN VACUUM SO OPTICS COMMUNICATIONS LA English DT Article AB This scheme involves pairs of intersecting linearly-polarized Gaussian-profile laser beams that are focused at crossover in vacuum and phased such that transverse field components cancel. The E(z) components accelerate properly-phased z-axis relativistic electrons throughout a half-wave slip distance centered at crossover. The slip length is approximately 901 for the case considered. The E(z) components vanish rapidly before and after this slip region, thus providing conditions for a special case that is not included in Palmer's general acceleration theorem. Electron energy-gain gradients of several GeV/m appear to be possible. RP HAALAND, CM (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 12 TC 37 Z9 37 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD FEB 1 PY 1995 VL 114 IS 3-4 BP 280 EP 284 DI 10.1016/0030-4018(94)00565-C PG 5 WC Optics SC Optics GA QD592 UT WOS:A1995QD59200017 ER PT J AU MARCY, HO ROSKER, MT WARREN, LF CUNNINGHAM, PH THOMAS, CA DELOACH, LA VELSKO, SP EBBERS, CA LIAO, JH KANATZIDIS, MG AF MARCY, HO ROSKER, MT WARREN, LF CUNNINGHAM, PH THOMAS, CA DELOACH, LA VELSKO, SP EBBERS, CA LIAO, JH KANATZIDIS, MG TI L-HISTIDINE TETRAFLUOROBORATE - A SOLUTION-GROWN SEMIORGANIC CRYSTAL FOR NONLINEAR FREQUENCY-CONVERSION SO OPTICS LETTERS LA English DT Article ID GENERATION AB The crystal structure, refractive indices, and phase-matching conditions for st new nonlinear optical material, L-histidine tetrafluoroborate (HFB), are reported. HFB grows readily, displays favorable mechanical characteristics, and has adequate birefringence to permit phase-matched parametric processes over much of its transparency range (250 nm to 1300 nm). The phase-matching loci and angular sensitivity for second-harmonic generation of 1064-nm light in single crystals of HFB were measured. The effective nonlinearity for HFB is comparable with that of beta-barium borate (similar to 2 pm/V), and its angular sensitivity [delta(Delta k)/delta theta] is somewhat smaller. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. MICHIGAN STATE UNIV,DEPT CHEM,E LANSING,MI 48824. RP MARCY, HO (reprint author), ROCKWELL INT SCI CTR,1049 CAMONO DOS RIOS,THOUSAND OAKS,CA 91360, USA. NR 8 TC 131 Z9 131 U1 0 U2 5 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD FEB 1 PY 1995 VL 20 IS 3 BP 252 EP 254 DI 10.1364/OL.20.000252 PG 3 WC Optics SC Optics GA QE725 UT WOS:A1995QE72500008 PM 19859151 ER PT J AU REYNOLDS, JG BURNHAM, AK MITCHELL, TO AF REYNOLDS, JG BURNHAM, AK MITCHELL, TO TI KINETIC-ANALYSIS OF CALIFORNIA PETROLEUM SOURCE ROCKS BY PROGRAMMED-TEMPERATURE MICROPYROLYSIS SO ORGANIC GEOCHEMISTRY LA English DT Article DE MICROPYROLYSIS; OIL GENERATION; CALIFORNIA SHALES; MONTEREY SHALES; KINETICS; ACTIVATION ENERGIES; TYPE II-S SHALES; TYPE II-S KINETICS ID KEROGEN PYROLYSIS RATES; MARINE SOURCE ROCKS; PARAMETERS; GENERATION; MONTEREY; LACUSTRINE; EVOLUTION AB Three California shales were examined by micropyrolysis to determine laboratory pyrolysis kinetics. Samples from the Modelo Formation with 6.16 wt % S in kerogen, Monterey Formation with 13.58 wt % S in kerogen, and with 8.88 wt % S and 13.16 wt % O in kerogen, exhibited shift-in-T-max and principal discrete distribution energies of 54 and 57, 51 and 52, and 65 and 59 kcal/mol, respectively. These results are evidence that laboratory decomposition kinetics of high sulfur kerogens and, in particular, Monterey kerogens appear not to be governed by organic sulfur content alone, particularly because the kinetic parameters for the 13.16 wt % O Monterey sample were well outside the range generally seen for type I, II, and II-S kerogens, and closer to Type III kerogens. C1 MOBIL RES & DEV CORP,CENT RES LAB,PRINCETON,NJ 08540. RP REYNOLDS, JG (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551, USA. NR 30 TC 18 Z9 19 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0146-6380 J9 ORG GEOCHEM JI Org. Geochem. PD FEB PY 1995 VL 23 IS 2 BP 109 EP 120 DI 10.1016/0146-6380(94)00121-G PG 12 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QY671 UT WOS:A1995QY67100002 ER PT J AU SONG, SG GRAY, GT AF SONG, SG GRAY, GT TI TRANSMISSION ELECTRON-MICROSCOPY EXAMINATION AND ANALYSIS OF AN ANOMALOUS STACKING-FAULT IN H.C.P. METALS SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article AB An anomalous stacking fault is reported that is observed within deformation twins in Ti and Zr. Their formation may be restricted to situations where deformation twinning takes place. An understanding of this process sheds new light on the twinning process. In this work the crystal structure of the stacking fault and its formation mechanism are investigated, RP SONG, SG (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 19 TC 20 Z9 20 U1 2 U2 12 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD FEB PY 1995 VL 71 IS 2 BP 263 EP 274 PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA QH556 UT WOS:A1995QH55600005 ER PT J AU SONG, SG GRAY, GT AF SONG, SG GRAY, GT TI MICROSCOPIC AND CRYSTALLOGRAPHIC ASPECTS OF RETAINED OMEGA-PHASE IN SHOCK-LOADED ZIRCONIUM AND ITS FORMATION MECHANISM SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID TRANSFORMATION; TITANIUM; ALLOY AB The alpha-->omega phase transformation products in shock-loaded pure Zr have been investigated. A portion of the omega phase is retained as a metastable phase after the pressure release. The orientation relationship (0001)(alpha)parallel to(10 ($) over bar 11)(omega) and [10 ($) over bar 10](alpha)parallel to[11 $($) over bar$$ 23](omega) observed between the two phases differs from those previously reported in Zr. Based on this orientation relationship a new transformation mechanism is proposed. The defect structures observed in the retained omega phase are in good agreement with those predicted according to the new mechanism. RP SONG, SG (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 19 TC 41 Z9 41 U1 1 U2 8 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD FEB PY 1995 VL 71 IS 2 BP 275 EP 290 PG 16 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA QH556 UT WOS:A1995QH55600006 ER PT J AU WANG, ZL LI, DC AF WANG, ZL LI, DC TI DYNAMICAL DIFFRACTION OF DOUBLE-INELASTICALLY SCATTERED ELECTRONS SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article ID THERMAL DIFFUSE-SCATTERING; CRYSTALS; COHERENCE; PATTERNS AB Dynamical theories are developed to calculate the diffraction intensities of double-inelastically scattered high-energy electrons (i.e. the electrons that have been inelastically scattered twice as the result of exciting two distinct crystal states) in crystals within the framework of quantum mechanics. These theories are needed to quantify the data of thermal diffusely scattered electron energy loss spectroscopy. The Bloch wave and Green's function approaches proposed here take into account the full dynamical diffraction effects of the electrons before and after each inelastic event. The Bloch wave theory gives a full three-dimensional description of double-inelastic scattering in crystals including higher-order Laue zone reflections, but it may not be convenient to calculate the intensity of high-angle thermal diffuse scattering of electrons because of the difficulty of including all of the possible multiphonon excitations. Green's function theory, as an alternative approach, is most suitable for integrating the contributions made by all possible multiphonon excitations. Details are given based on the first principle considerations of the inelastic processes. The diffraction intensity derived based on the Green function approach has been given in explicit analytical forms that are adequate for numerical calculations. C1 OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831. XIDIAN UNIV,DEPT PHYS,XIAN,PEOPLES R CHINA. RI Wang, Zhong Lin/E-2176-2011 OI Wang, Zhong Lin/0000-0002-5530-0380 NR 40 TC 6 Z9 6 U1 0 U2 5 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD FEB PY 1995 VL 71 IS 2 BP 201 EP 219 DI 10.1080/01418639508240306 PG 19 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA QH554 UT WOS:A1995QH55400007 ER PT J AU YUAN, SL YANG, ZJ KADOWAKI, K LI, JQ KIMURA, T TAKEYA, H KISHIO, K AF YUAN, SL YANG, ZJ KADOWAKI, K LI, JQ KIMURA, T TAKEYA, H KISHIO, K TI VORTEX DYNAMICS IN LA1.86SR0.14CUO4 STUDIED BY MAGNETORESISTIVITY SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; ANISOTROPIC SUPERCONDUCTORS; RESISTIVE TRANSITION; II SUPERCONDUCTORS; DISSIPATION; PHASE; FIELD AB Vortex dynamics in La1.86Sr0.14CuO4 have been studied by the measurement of rho(c)parallel-toi(T,H), where rho(c)parallel-toi is the c-axis resistivity for Hparallel-toi (i = c or a-b). We argue that, at temperatures higher than the irreversibility temperature T(irr), the usual vortex picture breaks down owing to the thermal motion of vortices, resulting in a T- and T(irr)-dependent anisotropic parameter gamma. After taking into account the dependence of gamma on T and T(irr), we show that at each given temperature we can rescale the rho(c)parallel-toa-b(T,H) data onto the corresponding rho(c)parallel-toc(T,H) curves. This scaling property clearly indicates that the Lorentz-force-free mechanism is responsible for rho(c)parallel-toa-b(T,H). Furthermore, we also show that the measured rho(c)parallel-toa-b(T,H) data can be explained in terms of the recently developed extended Josephson coupling model which is verified by rescaling rho(c)parallel-toa-b(T) data for various fields onto a single curve. C1 NATL RES INST MET,TSUKUBA LAB,IBARAKI 305,JAPAN. WUHAN INST TECHNOL,DEPT PHYS,WUHAN,PEOPLES R CHINA. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV TOKYO,DEPT IND CHEM,TOKYO 113,JAPAN. RP YUAN, SL (reprint author), ACAD SINICA,INST PLASMA PHYS,HIGH MAGNET FIELD LAB,HEFEI 230031,PEOPLES R CHINA. NR 20 TC 1 Z9 1 U1 0 U2 1 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PD FEB PY 1995 VL 71 IS 2 BP 169 EP 177 DI 10.1080/09500839508241010 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA QG773 UT WOS:A1995QG77300012 ER PT J AU PACOLD, ME STEVENS, FJ LI, D ANDERSON, LE AF PACOLD, ME STEVENS, FJ LI, D ANDERSON, LE TI THE NADP-LINKED GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASES OF ANABAENA-VARIABILIS AND SYNECHOCYSTIS PCC-6803, WHICH LACK ONE OF THE CYSTEINES FOUND IN THE HIGHER-PLANT ENZYME, ARE NOT REDUCTIVELY ACTIVATED SO PHOTOSYNTHESIS RESEARCH LA English DT Article DE CYANOBACTERIA; FRUCTOSEBISPHOSPHATASE; GLUCOSE-6-P DEHYDROGENASE; INACTIVATING DISULFIDE; LIGHT ACTIVATION; REDOX-SENSITIVE CYSTEINES ID BACILLUS-STEAROTHERMOPHILUS; REDOX-MODULATION; GLUCOSE-6-PHOSPHATE-DEHYDROGENASE; CYANOBACTERIUM; THIOREDOXIN; PRINCIPLE; SEQUENCE; CELLS; GENES AB Light activation of NADP-linked glyceraldehyde-3-P dehydrogenase involves reductive cleavage of a disulfide bond. We have proposed that the inactivating disulfide locks the two domains of the enzyme, preventing catalysis, and we have tentatively identified the two critical cysteine residues in the chloroplast enzyme (D. Li, F.J. Stevens, M. Schiffer and L.E. Anderson (1994) Biophys J. 67: 29-35). We reasoned that if activation of this enzyme involves these cysteines that enzymes lacking one or both should be active in the dark and insensitive to reductants. One of these cysteines is present in the enzymes from Anabaena variabilis and Synechocystis PCC 6803 but the other is not. Consistent with the proposed mechanism, glyceraldehyde-3-P dehydrogenase is not affected by DTT-treatment in extracts of either of these cyanobacteria. Fructosebisphosphatase is DTT-activated in extracts of both of these cyanobacteria and glucose-6-P dehydrogenase is inactivated in Synechocystis, as in higher plant chloroplasts. Apparently reductive modulation is possible in these cyanobacteria but glyceraldehyde-3-P dehydrogenase is not light activated. C1 UNIV ILLINOIS,DEPT BIOL SCI,CHICAGO,IL 60607. ARGONNE NATL LAB,CTR MECHANIST BIOL & BIOTECHNOL,ARGONNE,IL 60439. NR 22 TC 11 Z9 11 U1 1 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0166-8595 J9 PHOTOSYNTH RES JI Photosynth. Res. PD FEB PY 1995 VL 43 IS 2 BP 125 EP 130 DI 10.1007/BF00042969 PG 6 WC Plant Sciences SC Plant Sciences GA RD408 UT WOS:A1995RD40800006 PM 24306745 ER PT J AU HUBER, G ALSTROM, P AF HUBER, G ALSTROM, P TI UNIVERSAL DECAY OF VORTEX DENSITY IN 2-DIMENSIONS (VOL 195, PG 448, 1993) SO PHYSICA A LA English DT Correction, Addition C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NIELS BOHR INST,ORSTED LAB,DK-2100 COPENHAGEN O,DENMARK. RP HUBER, G (reprint author), BOSTON UNIV,CTR POLYMER STUDIES,BOSTON,MA 02215, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD FEB 1 PY 1995 VL 213 IS 4 BP 604 EP 604 DI 10.1016/0378-4371(94)00135-G PG 1 WC Physics, Multidisciplinary SC Physics GA QF656 UT WOS:A1995QF65600012 ER PT J AU Andrews, AB Joyce, JJ Arko, AJ Thompson, JD Fisk, Z Tang, J Lawrence, JM Riseborough, PS Canfield, PC AF Andrews, A. B. Joyce, J. J. Arko, A. J. Thompson, J. D. Fisk, Z. Tang, J. Lawrence, J. M. Riseborough, P. S. Canfield, P. C. TI 4f bands in Ce heavy fermions and mixed valent compounds at T >> T-K SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We report evidence of 4f band character in Ce 4f states at T >> T-K using high-resolution angle-resolved resonant photoemission. The Ce intermetallic compound CePt2+x was grown and studied in situ by the method of MBE and was characterized by LEED, XPS and XAS. These new findings suggest a need for a re-examination of 4f photoemission in Ce compounds. C1 [Andrews, A. B.; Joyce, J. J.; Arko, A. J.; Thompson, J. D.; Fisk, Z.; Tang, J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Lawrence, J. M.] UC Irvine, Inst Surface & Interface Sci, Irvine, CA 92717 USA. [Riseborough, P. S.] Polytech Univ, Brooklyn, NY 11201 USA. [Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Andrews, AB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 8 TC 6 Z9 6 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 83 EP 85 DI 10.1016/0921-4526(94)00372-3 PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300023 ER PT J AU Aronson, MC Osborn, R Robinson, RA Lynn, JW Chau, R Seaman, CL Maple, MB AF Aronson, M. C. Osborn, R. Robinson, R. A. Lynn, J. W. Chau, R. Seaman, C. L. Maple, M. B. TI Non-Fermi liquid scaling in UPdxCu5-x (x=1, 1.5) SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We have determined the inelastic magnetic response S(omega) of UPdxCu(5-x) (x = 1, 1.5) for temperatures from 0.3 K to 300 K and energies between 0.5 meV and 100 meV using the neutron time of flight technique. S(omega) is virtually identical in the two compounds, displaying marginal Fermi liquid scaling over the entire range of temperatures, as well as scale invariant energetics. C1 [Aronson, M. C.] Univ Michigan, Dept Phys, Ann Arbor, MI USA. [Osborn, R.] Argonne Natl Lab, Argonne, IL 60439 USA. [Robinson, R. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Lynn, J. W.] NIST, Gaithersburg, MD 20899 USA. [Chau, R.; Seaman, C. L.; Maple, M. B.] Univ Calif San Diego, La Jolla, CA 92093 USA. RP Aronson, MC (reprint author), Univ Michigan, Dept Phys, Ann Arbor, MI USA. NR 10 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 108 EP 111 DI 10.1016/0921-4526(94)00378-9 PG 4 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300029 ER PT J AU McEwen, KA Bull, MJ Eccleston, RS Hinks, D Bradshaw, AR AF McEwen, K. A. Bull, M. J. Eccleston, R. S. Hinks, D. Bradshaw, A. R. TI Neutron scattering studies of UxY1-xPd3 compounds SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We have examined the spin dynamics of U0 2Y0.8Pd3 and U0.45Y0.55Pd3, at low temperatures, using inelastic neutron scattering techniques. In U0.45Y0.55Pd3 we observe excitations at 2-5 meV and 36 meV, which we attribute to crystal field levels. The energy of the lower branch shows a dispersion characteristic of antiferromagnetic correlations. The magnetic scattering from U0.2Y0.8Pd3 is much weaker, and the excitations are strongly damped with a Lorentzian (relaxational) response. C1 [McEwen, K. A.; Bull, M. J.] Univ London, Birkbeck Coll, Dept Phys, Malet St, London WC1E 7HX, England. [Eccleston, R. S.] Rutherford Appleton Lab, IS1S Facil, Didcot OX11 0QX, Oxon, England. [Hinks, D.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. [Bradshaw, A. R.] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England. RP McEwen, KA (reprint author), Univ London, Birkbeck Coll, Dept Phys, Malet St, London WC1E 7HX, England. NR 6 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 112 EP 115 DI 10.1016/0921-4526(94)00379-A PG 4 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300030 ER PT J AU Maekawa, S Tsutsui, K Ohta, Y Dagotto, E Riera, J AF Maekawa, S. Tsutsui, K. Ohta, Y. Dagotto, E. Riera, J. TI Excitation spectra in periodic Anderson and Kondo lattices SO PHYSICA B-CONDENSED MATTER LA English DT Article AB The one-particle excitation spectra and the momentum distribution functions for the periodic Anderson and Kondo Lattices in one and two dimensions and their dependence on the electron density are studied by using the exact diagonalization method with twisted boundary conditions on clusters with six and eight unit cells. We find the following: in the insulating state there exist more low-energy excitations than expected for a non-interacting system with the mixing gap, and in the metallic state the heavy fermion band is formed by reconstructing the low-energy excitations in the insulating state upon doping of carriers but not by simply shifting the Fermi level. As a result, the momentum distribution function has two characteristic momenta. C1 [Maekawa, S.; Tsutsui, K.; Ohta, Y.] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 46401, Japan. [Dagotto, E.] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. [Dagotto, E.] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA. [Riera, J.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Maekawa, S (reprint author), Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 46401, Japan. NR 9 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 147 EP 150 DI 10.1016/0921-4526(94)00390-H PG 4 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300041 ER PT J AU Sparn, G Canfield, PC Hellmann, P Keller, M Link, A Fisher, RA Phillips, NE Thompson, JD Steglich, F AF Sparn, G. Canfield, P. C. Hellmann, P. Keller, M. Link, A. Fisher, R. A. Phillips, N. E. Thompson, J. D. Steglich, F. TI Dependence of magnetism on hybridization in Ce(Cu1-xNix)(2)Ge-2 SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Measurements of specific heat (0.3 K < T < 15 K, P < 1.2 GPa) and electrical resistance (1.2 K < T < 300 K, P < 2 GPa) under hydrostatic pressure on the heavy-fermion system Ce(Cu1-xNix)(2)Ge-2 (x <= 0.1) were performed to discriminate between effects of chemical substitution and purely steric effects on the 4f-ligand hybridization in Kondo-lattice systems. The latter is effective in forming heavy-mass quasiparticles or generating heavy-fermion band magnetism (HFBM). We find the Kondo temperature T K to be governed by volume, while magnetic-ordering transitions at T-N1H and T-N1L for 0 < x <= 0.1 cannot be reproduced in CeCu2Ge2 by a corresponding change in volume. Entropy calculations lead us to conclude that the lower transition (T-N1L) reflects a reorientation of the magnetic moments within the antiferromagnetically ordered phase and may be a precursor of a HFBM state. Its absolute value critically depends on ligand periodicity and/or density-of-states effects. C1 [Sparn, G.] Univ Augsburg, Expt Phys 1, D-86135 Augsburg, Germany. [Sparn, G.; Hellmann, P.; Keller, M.; Link, A.; Steglich, F.] THD, Inst Festkorperphys, D-64289 Darmstadt, Germany. [Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Fisher, R. A.; Phillips, N. E.] UC Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Thompson, J. D.] Los Alamos Nat Lab, Los Alamos, NM 87545 USA. RP Sparn, G (reprint author), TH Darmstadt, Inst Festkorperphys, Fachgebiet Tech Phys, Hochschulstr 8, D-64289 Darmstadt, Germany. RI Sparn, Guenter/F-5120-2013 NR 9 TC 6 Z9 6 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 212 EP 215 DI 10.1016/0921-4526(94)00411-N PG 4 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300062 ER PT J AU Uwatoko, Y Oomi, G Graf, T Thompson, JD Canfield, PC Borges, HA Godart, C Gupta, LC AF Uwatoko, Y. Oomi, G. Graf, T. Thompson, J. D. Canfield, P. C. Borges, H. A. Godart, C. Gupta, L. C. TI Effect of pressure on the magnetic transitions in CeRh2Ge2 and CeRu2Ge2 SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We have studied the effect of pressure on the magnetic transition in CeRh2Ge2 and CeRu2Ge2 by electrical resistance measurements in the temperature range between 1.2 K and 300 K. Both samples show two magnetic transitions below 30 K. In CeRh2Ge2, the magnetic transition temperatures increase with increasing pressure. In the case of CeRu2Ge2, the upper magnetic transition temperature increases with pressure, whereas the lower one decreases with increasing pressure. C1 [Uwatoko, Y.; Oomi, G.] Kumamoto Univ, Fac Gen Educ, Dept Phys, Kumamoto 860, Japan. [Uwatoko, Y.; Graf, T.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Canfield, P. C.] Ames Lab, Ames, IA 50011 USA. [Borges, H. A.] PUC RJ, Rio De Janeiro, Brazil. [Godart, C.] CNRS, Meudon, France. [Gupta, L. C.] TIFR, Bombay, Maharashtra, India. RP Uwatoko, Y (reprint author), Kumamoto Univ, Fac Gen Educ, Dept Phys, Kumamoto 860, Japan. NR 7 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 234 EP 236 DI 10.1016/0921-4526(94)00418-U PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300069 ER PT J AU Kawarazaki, S Kobashi, Y Fernandez-Baca, JA Murayama, S Onuki, Y Miyako, Y AF Kawarazaki, S. Kobashi, Y. Fernandez-Baca, J. A. Murayama, S. Onuki, Y. Miyako, Y. TI Neutron diffraction study on the magnetism of the Ce(Ru1-xRhx)(2)Si-2 mixed compound system SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We have studied the magnetic properties of the pseudo-binary system Ce(Ru(1-x)Rhx)(2)Si-2 by means of neutron diffraction with single crystalline samples. In the intermediate phase with 0.05 <= x <= 0.25, we observed incommensurable magnetic modulation. Since no higher order component was observed and the polarization is uniaxial (along the c-axis), the modulation is regarded as purely sinusoidal. The magnetic structure of CeRh2Si2 is discussed on the basis of the exact atomic magnetic moments of Ce. C1 [Kawarazaki, S.; Kobashi, Y.; Miyako, Y.] Osaka Univ, Dept Earth & Space Sci, Toyonaka, Osaka 560, Japan. [Fernandez-Baca, J. A.] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. [Murayama, S.] Muroran Inst Technol, Muroran, Hokkaido 050, Japan. [Onuki, Y.] Osaka Univ, Dept Phys, Toyonaka, Osaka 560, Japan. RP Kawarazaki, S (reprint author), Osaka Univ, Dept Earth & Space Sci, Toyonaka, Osaka 560, Japan. NR 11 TC 61 Z9 61 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 298 EP 300 DI 10.1016/0921-4526(94)00439-3 PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300090 ER PT J AU Reyes, AP Le, LP Heffner, RH Ahrens, ET Fisk, Z Canfield, PC AF Reyes, A. P. Le, L. P. Heffner, R. H. Ahrens, E. T. Fisk, Z. Canfield, P. C. TI Bi-209 NMR in the heavy-electron system YbBiPt SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Bismuth NMR Knight shift and spin lattice relaxation rate 1/T-1 data are reported between 35 and 325 K in the low-carrier heavy fermion system YbBiPt. The Knight shift is strongly temperature dependent and negative. Its temperature dependence tracks the bulk susceptibility with a hyperfine coupling constant A(hf) = -7.88 kOe/mu(B). At low temperatures 1/T-1 exhibits a dramatic increase, such that the average 4f spin correlation time tau(f) shows a crossover behavior at about 75 K. The rate 1/tau(f) is proportional to temperature above 75 K, consistent with non-interacting 4f local moments which are relaxed via Korringa-type scattering with the conduction electrons. We discuss the behavior below 75 K in terms of crystal-field effects or a strongly temperature dependent contribution from non-zero q regime of the dynamical susceptibility. C1 [Reyes, A. P.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. [Le, L. P.; Heffner, R. H.; Ahrens, E. T.; Fisk, Z.] Los Alamos Natl Lab, Div Mat Sci & Technol, MS K764, Los Alamos, NM 87545 USA. [Canfield, P. C.] Ames Lab, Iowa State Univ, Dept Phys, Ames, IA 50011 USA. RP Heffner, RH (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, MS K764, Los Alamos, NM 87545 USA. NR 12 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 332 EP 335 DI 10.1016/0921-4526(94)00450-A PG 4 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300101 ER PT J AU Bremer, J Sergatskov, DA Xia, JS Granroth, GE Signore, PJC Ihas, GG Meisel, MW Canfield, PC Movshovich, R Lacerda, A Fisk, Z AF Bremer, J. Sergatskov, D. A. Xia, J. S. Granroth, G. E. Signore, P. J. C. Ihas, G. G. Meisel, M. W. Canfield, P. C. Movshovich, R. Lacerda, A. Fisk, Z. TI Ultralow temperature inductive measurements of YbBiPt SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Low frequency magnetic susceptibility measurements have been performed on YbBiPt from 3 to 800 mK. In addition to the known peak at 400 mK, an anomaly exists near 120 mK. The lowest temperature feature arises from a surface phase (e.g. Bi2Pt) and is not a property of the main material. No additional features in the susceptibility are attributed to the bulk material down to the lowest temperature. C1 [Bremer, J.; Sergatskov, D. A.; Xia, J. S.; Granroth, G. E.; Signore, P. J. C.; Ihas, G. G.; Meisel, M. W.] Univ Florida, Dept Phys, 215 Williamson Hall,POB 118440, Gainesville, FL 32611 USA. [Bremer, J.; Sergatskov, D. A.; Xia, J. S.; Granroth, G. E.; Signore, P. J. C.; Ihas, G. G.; Meisel, M. W.] Univ Florida, Ctr Ultralow Temp Res, Gainesville, FL 32611 USA. [Canfield, P. C.] Ames Lab, Iowa State Univ, Dept Phys, Ames, IA 50011 USA. [Movshovich, R.; Lacerda, A.; Fisk, Z.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Meisel, MW (reprint author), Univ Florida, Dept Phys, 215 Williamson Hall,POB 118440, Gainesville, FL 32611 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 336 EP 337 DI 10.1016/0921-4526(94)00451-Z PG 2 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300102 ER PT J AU Lacerda, A Graf, T Hundley, MF Torikachvili, MS Lawrence, JM Thompson, JD Gajewski, D Canfield, PC Fisk, Z AF Lacerda, A. Graf, T. Hundley, M. F. Torikachvili, M. S. Lawrence, J. M. Thompson, J. D. Gajewski, D. Canfield, P. C. Fisk, Z. TI High field magnetotransport and specific heat in YbAgCu4 SO PHYSICA B-CONDENSED MATTER LA English DT Article AB The electrical resistivity (rho) and magnetoresistance of polycrystalline YbAgCu4 have been measured at temperatures between 25 mK and 300 K, and at magnetic fields (B) up to 18 T. The magnetoresistance (rho(B) - rho(0))/rho(0)) is positive at all temperatures below 200 K and reaches its maximum of 60% at 18 T and 25 mK. The field-and temperature-dependent resistivity does not scale in a simple way. The opposite sign of the magnetoresistance at ambient and high pressure can be explained qualitatively by crystal-field effects lifting the degeneracy of the J = 7/2 groundstate. The linear coefficient of the specific heat (gamma) measured at fields up to 10 T shows a quadratic field dependence. We did not find a linear relation between gamma(2) and A, the T-2-coefficient of the temperature-dependent resistivity, with the applied magnetic field as the implicit parameter. C1 [Lacerda, A.; Graf, T.] Natl High Magnet Field Lab, Pulse Facil, Los Alamos, NM 87545 USA. [Graf, T.; Hundley, M. F.; Torikachvili, M. S.; Thompson, J. D.; Fisk, Z.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Torikachvili, M. S.] San Diego State Univ, Dept Phys, San Diego, CA 92182 USA. [Lawrence, J. M.] Univ Calif Irvine, Dept Phys, Irvine, CA 92717 USA. [Gajewski, D.; Fisk, Z.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. [Canfield, P. C.] Ames Lab, Ames, IA 50011 USA. RP Lacerda, A (reprint author), Natl High Magnet Field Lab, Pulse Facil, Los Alamos, NM 87545 USA. NR 11 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 358 EP 360 DI 10.1016/0921-4526(94)00458-8 PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300109 ER PT J AU Cooley, JC Aronson, MC Lacerda, A Canfield, PC Fisk, Z Guertin, RP AF Cooley, J. C. Aronson, M. C. Lacerda, A. Canfield, P. C. Fisk, Z. Guertin, R. P. TI Magnetic field dependence of the correlation gap in SmB6 SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Magnetoresistance measurements were used to probe the effect of large magnetic fields on the stability of the electronic gap (Delta) in SmB6. Although the free electron Zeeman splitting in an 18 T field is comparable to the ambient pressure Delta, and even exceeds Delta at 45 kbar, Delta is in both cases almost completely unaffected by the magnetic field. C1 [Cooley, J. C.; Aronson, M. C.] Univ Michigan, Ann Arbor, MI 48109 USA. [Lacerda, A.] Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. [Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Fisk, Z.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Guertin, R. P.] Tufts Univ, Medford, MA 02155 USA. RP Aronson, MC (reprint author), Univ Michigan, Ann Arbor, MI 48109 USA. RI Cooley, Jason/E-4163-2013 NR 9 TC 5 Z9 5 U1 3 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 377 EP 379 DI 10.1016/0921-4526(94)00464-7 PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300115 ER PT J AU Degiorgi, L Ott, HR Dressel, M Gruner, G Geibel, C Steglich, F Fisk, Z AF Degiorgi, L. Ott, H. R. Dressel, M. Gruner, G. Geibel, C. Steglich, F. Fisk, Z. TI Optical investigation of the antiferromagnetic phase transitions in heavy-electron compounds SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We have investigated the electrodynamic response of the heavy-electron compounds UPd2Al3 (T-N = 14.5 K) and UCu5 (T-N = 15 K). The complete excitation spectra were obtained by Kramers-Kronig transformation of the optical reflectivities measured on a fairly broad frequency range (i.e. from 15 up to 10(5) cm (1)), combined with the direct measurement of the conductivity at millimeter and microwave frequencies. In UCu5 we found an absorption in the far infrared below T-N, which is ascribed to excitations across a spin-density-wave-type gap and indicates the itinerant nature of the magnetic phase transition. This feature is absent in UPd2Al3, in accordance with the local magnetic moment character of the antiferromagnetic order. C1 [Degiorgi, L.; Ott, H. R.] ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland. [Dressel, M.; Gruner, G.] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90024 USA. [Geibel, C.; Steglich, F.] Tech Hsch Darmstadt, Inst Festkorperphys, D-6100 Darmstadt, Germany. [Fisk, Z.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Degiorgi, L (reprint author), ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland. NR 9 TC 6 Z9 6 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 441 EP 443 DI 10.1016/0921-4526(94)00484-D PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300135 ER PT J AU Rainford, BD Adroja, DT Severing, A Goremychkin, EA Thompson, JD Fisk, Z AF Rainford, B. D. Adroja, D. T. Severing, A. Goremychkin, E. A. Thompson, J. D. Fisk, Z. TI Inelastic neutron scattering study of U3Pt3Sb4 SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Inelastic neutron scattering measurements on cubic U3Pt3Sb4 reveal well-defined crystal field and spin-orbit excitations, consistent with a U4+ 5f(2) configuration of the uranium ion. The magnetic ground state is a crystal field singlet. This may be taken as confirmatory evidence that this compound is not a Kondo insulator, but a band semiconductor. C1 [Rainford, B. D.; Adroja, D. T.] Univ Southampton, Dept Phys, Southampton SO17 1BJ, Hants, England. [Severing, A.] Inst Laue Langevin, F-38042 Grenoble 9, France. [Goremychkin, E. A.] Rutherford Appleton Labs, ISIS Facil, Chilton OX11 0QX, England. [Thompson, J. D.; Fisk, Z.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Rainford, BD (reprint author), Univ Southampton, Dept Phys, Southampton SO17 1BJ, Hants, England. NR 6 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 464 EP 466 DI 10.1016/0921-4526(94)00491-D PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300142 ER PT J AU Nieuwenhuys, GJ Mentink, SAM Menovsky, AA Amato, A Feyerherm, R Gygax, FN Heffner, RH Le, LP MacLaughlin, DE Schenck, A AF Nieuwenhuys, G. J. Mentink, S. A. M. Menovsky, A. A. Amato, A. Feyerherm, R. Gygax, F. N. Heffner, R. H. Le, L. P. MacLaughlin, D. E. Schenck, A. TI mu+SR in antiferromagnetic UNi4B SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Positive-muon spin rotation (mu+SR) has been carried out in a single crystal of the hexagonal antiferromagnet UNi4B, for which the magnetic structure has recently been resolved by Mentink et al. No spontaneous precession was observed in zero field with the mu(+) spin directed along the rhombohedral b-axis; instead, rapidly and slowly relaxing components (comprising 70% and 30% volume fraction, respectively) were found. On the other hand, a frequency of 5 MHz was detected when the mu(+) spin was directed along the c-axis. Transverse-field measurements indicate that the mu(+) is not stopped at a highly symmetric site. The experimental results are compared with calculations based on the magnetic structure. C1 [Nieuwenhuys, G. J.; Mentink, S. A. M.; Menovsky, A. A.] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. [Amato, A.; Feyerherm, R.; Gygax, F. N.; Schenck, A.] ETH Zurich, ITP, Zurich, Switzerland. [Heffner, R. H.; Le, L. P.] Los Alamos Natl Lab, Los Alamos, NM USA. [MacLaughlin, D. E.] Univ Calif Riverside, Riverside, CA 92521 USA. RP Nieuwenhuys, GJ (reprint author), Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. NR 10 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 470 EP 472 DI 10.1016/0921-4526(94)00493-F PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300144 ER PT J AU Le, LP Heffner, RH Nieuwenhuys, GJ Canfield, PC Cho, BK Amato, A Feyerherm, R Gygax, FN MacLaughlin, DE Schenck, A AF Le, L. P. Heffner, R. H. Nieuwenhuys, G. J. Canfield, P. C. Cho, B. K. Amato, A. Feyerherm, R. Gygax, F. N. MacLaughlin, D. E. Schenck, A. TI mu(+) SR studies of magnetic properties of boron carbide superconductors SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Positive-muon spin relaxation (mu+SR) has been carried out in the recently discovered rare-earth boron carbide superconductors RNi2B2C, R = Ho, Er and Tm. For R = Ho and Er zero-field mu(+) SR measurements showed a well-defined internal field below the Neel temperatures of 5.5 K coexisting with the superconducting state down to 0.1 K. The observed temperature dependence of the order parameter for Ho is consistent with a 2-dimensional Ising model. For R = Tm a spontaneous internal field appears above 30 K, whose magnitude saturates below about 3 K at a value corresponding to a rare earth moment much smaller than for Ho and Er. Transverse-field mu(+) SR measurements in R = Tm showed a superconducting penetration depth lambda = 1200 angstrom. The temperature dependence of A is consistent with conventional s-wave pairing. C1 [Le, L. P.; Heffner, R. H.] Los Alamos Natl Lab, Mat Div, MS L764, Los Alamos, NM 87545 USA. [Nieuwenhuys, G. J.] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. [Canfield, P. C.; Cho, B. K.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Amato, A.; Feyerherm, R.; Gygax, F. N.; Schenck, A.] ETH Zurich, IMP, CH-5232 Villigen, Switzerland. [MacLaughlin, D. E.] Univ Calif Riverside, Riverside, CA 92521 USA. RP Le, LP (reprint author), Los Alamos Natl Lab, Mat Div, MS L764, Los Alamos, NM 87545 USA. NR 12 TC 16 Z9 16 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 552 EP 554 DI 10.1016/0921-4526(94)00516-X PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300167 ER PT J AU Ahrens, ET Heffner, RH Hammel, PC Reyes, AP Smith, JL Clark, WG AF Ahrens, E. T. Heffner, R. H. Hammel, P. C. Reyes, A. P. Smith, J. L. Clark, W. G. TI Be-9 and B-11 NMR study of superconductivity in boron doped UBe13 SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We present Be-9 and B-11 NMR spin-lattice relaxation rate (1/T-1) measurements in UBe13-xBx for x = 0.03 and 0.07 over the temperature range 0.096 K to 2 K. The temperature dependence of 1/T-1 shows a strong B concentration dependence, especially at low temperatures. We interpret this behavior as consistent with gapless superconductivity induced by the addition of B impurities. The ratio of the Be-9 to B-11 1/T-1 increases with decreasing temperature below T-c indicating additional contributions to the Be-9 relaxation rate, possibly from nuclear spin diffusion to normal-state vortex cores or paramagnetic impurities. C1 [Ahrens, E. T.; Heffner, R. H.; Hammel, P. C.; Reyes, A. P.; Smith, J. L.] Los Alamos Natl Lab, Div Mat, Los Alamos, NM 87545 USA. [Clark, W. G.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA. RP Heffner, RH (reprint author), Los Alamos Natl Lab, Div Mat, Los Alamos, NM 87545 USA. RI Hammel, P Chris/O-4845-2014 OI Hammel, P Chris/0000-0002-4138-4798 NR 8 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 589 EP 592 DI 10.1016/0921-4526(94)00528-4 PG 4 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300177 ER PT J AU Feyerherm, R Amato, A Geibel, C Gygax, FN Hellmann, P Heffner, RH MacLaughlin, DE Muller-Reisener, R Nieuwenhuys, GJ Schenck, A Steglich, F AF Feyerherm, R. Amato, A. Geibel, C. Gygax, F. N. Hellmann, P. Heffner, R. H. MacLaughlin, D. E. Mueller-Reisener, R. Nieuwenhuys, G. J. Schenck, A. Steglich, F. TI On the competition between superconductivity and magnetism in CeCu2Si2 SO PHYSICA B-CONDENSED MATTER LA English DT Article AB Muon spin relaxation measurements in zero magnetic field on several polycrystalline samples provide evidence that superconductivity and magnetic order do not coexist on a microscopic scale but develop inhomogeneously in Ce1+xCu2+ySi2. The distribution of magnetic and superconducting domains depends on the temperature and sensitively on variations of the stoichiometry. Superconductivity sets in first in the paramagnetic domains and, on further cooling, reduces the magnetically ordered volume fraction. However, in all samples down to T = 60 mK considerable portions remain magnetic. C1 [Feyerherm, R.; Amato, A.; Gygax, F. N.; Schenck, A.] ETH Zurich, Inst Particle Phys, CH-5232 Villigen, Switzerland. [Geibel, C.; Hellmann, P.; Mueller-Reisener, R.; Steglich, F.] TH Darmstadt, Inst Festkorperphys, D-64289 Darmstadt, Germany. [Heffner, R. H.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [MacLaughlin, D. E.] Univ Calif Riverside, Riverside, CA 92521 USA. [Nieuwenhuys, G. J.] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands. RP Feyerherm, R (reprint author), ETH Zurich, Inst Particle Phys, CH-5232 Villigen, Switzerland. RI Amato, Alex/H-7674-2013 OI Amato, Alex/0000-0001-9963-7498 NR 13 TC 26 Z9 26 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 596 EP 599 DI 10.1016/0921-4526(94)00530-9 PG 4 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300179 ER PT J AU Fisk, Z Sarrao, JL Thompson, JD Mandrus, D Hundley, MF Miglori, A Bucher, B Schlesinger, Z Aeppli, G Bucher, E DiTusa, JF Oglesby, CS Ott, HR Canfield, PC Brown, SE AF Fisk, Z. Sarrao, J. L. Thompson, J. D. Mandrus, D. Hundley, M. F. Miglori, A. Bucher, B. Schlesinger, Z. Aeppli, G. Bucher, E. DiTusa, J. F. Oglesby, C. S. Ott, H-R. Canfield, P. C. Brown, S. E. TI Kondo insulators SO PHYSICA B-CONDENSED MATTER LA English DT Article AB The Kondo insulating materials present a particularly simple limiting case of the strongly correlated electron lattice problem, one occupied f-state interacting with a single half-filled conduction band. Experiment shows that the solution to this problem has some remarkably simple aspects. Optical conductivity data display the strong coupling nature of this physics. C1 [Fisk, Z.; Sarrao, J. L.] Natl High Magnet Field Lab, 1800 E Paul Dirac Dr, Tallahassee, FL 32306 USA. [Thompson, J. D.; Mandrus, D.; Hundley, M. F.; Miglori, A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Bucher, B.; Schlesinger, Z.] IBM, TJ Watson Res Ctr, Yorktown Hts, NY 10958 USA. [Aeppli, G.; Bucher, E.; DiTusa, J. F.; Oglesby, C. S.] AT&T Bell Labs, Murray Hill, NJ 07974 USA. [Ott, H-R.] ETH Honggerberg, Festkorperphys Lab, CH-8093 Zurich, Switzerland. [Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Brown, S. E.] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90024 USA. RP Fisk, Z (reprint author), Natl High Magnet Field Lab, 1800 E Paul Dirac Dr, Tallahassee, FL 32306 USA. NR 24 TC 42 Z9 42 U1 3 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 798 EP 803 DI 10.1016/0921-4526(94)00588-M PG 6 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300237 ER PT J AU Degiorgi, L Hunt, M Ott, HR Fisk, Z AF Degiorgi, L. Hunt, M. Ott, H. R. Fisk, Z. TI Transport and optical properties of FeSi SO PHYSICA B-CONDENSED MATTER LA English DT Article AB We have investigated the electrodynamic response of the cubic compound FeSi, including sigma(DC)(T) and the optical reflectivity as a function of temperature over a very large frequency range, extending from the far infrared regime up to the ultraviolet spectral range. By lowering the temperature a gap excitation at about 800 cm 1 and several absorption peaks were found. Moreover, the spectral weight lost below the gap reappears just above it and is not distributed over an energy range of order eV, as suggested in previous work. C1 [Degiorgi, L.; Hunt, M.; Ott, H. R.] ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland. [Fisk, Z.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Degiorgi, L (reprint author), ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland. NR 7 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4526 EI 1873-2135 J9 PHYSICA B JI Physica B PD FEB 1 PY 1995 VL 206 BP 810 EP 812 DI 10.1016/0921-4526(94)00592-J PG 3 WC Physics, Condensed Matter SC Physics GA V44TW UT WOS:000209772300240 ER PT J AU SPECHT, ED GOYAL, A KROEGER, DM DELUCA, JA TKACZYK, JE BRIANT, CL SUTLIFF, JA AF SPECHT, ED GOYAL, A KROEGER, DM DELUCA, JA TKACZYK, JE BRIANT, CL SUTLIFF, JA TI THE EFFECT OF COLONIES OF ALIGNED GRAINS ON CRITICAL-CURRENT IN HIGH-TEMPERATURE SUPERCONDUCTORS SO PHYSICA C LA English DT Article ID MODEL; TAPES AB X-ray microdiffraction has been used to map the orientational distribution of grains in a 4X5 mm(2) polycrystalline film of Tl1-yBa2Cu2Cu3Ox (Tl-1223) grown on yttria-stabilized zirconia (YSZ). The film consists of ''colonies'', each containing similar to 10(4) grains with their a-axes aligned; the c-axes of all grains are aligned normal to the film, but there is no overall a-axis alignment. While the grain boundaries within a colony are small angle, colonies are separated by large-angle tilt boundaries. The typical colony size is 0.4 mm. Measured critical currents are compared with simulations based on observed distributions of grain alignment; we find that variations in grain alignment account for the observed variations in the critical current density. Simulations over longer distances indicate that a colony structure can substantially increase the critical current, especially in magnetic fields. C1 GE CO,RES & DEV,SCHENECTADY,NY 12301. RP SPECHT, ED (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN 37831, USA. RI Specht, Eliot/A-5654-2009 OI Specht, Eliot/0000-0002-3191-2163 NR 11 TC 9 Z9 9 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 FEB 1 PY 1995 VL 242 IS 1-2 BP 164 EP 168 DI 10.1016/0921-4534(94)02382-4 PG 5 WC Physics, Applied SC Physics GA QF501 UT WOS:A1995QF50100022 ER PT J AU ALLENO, E NEUMEIER, JJ THOMPSON, JD CANFIELD, PC CHO, BK AF ALLENO, E NEUMEIER, JJ THOMPSON, JD CANFIELD, PC CHO, BK TI INFLUENCE OF PRESSURE ON THE SUPERCONDUCTING STATE OF RNI(2)B(2)C (R=Y, HO, ER, AND TM) COMPOUNDS SO PHYSICA C LA English DT Article AB Measurements of the superconducting transition temperature T-c under hydrostatically applied pressure have been carried out on single-crystalline RNi(2)B(2)C (R=Y, Ho, Er, Tm) superconductors. YNi2B2C and ErNi2B2C exhibit peaks in T-c(P) centered at approximate to 0.52 GPa and approximate to 0.94 GPa with initial slopes of dT(c)/dP approximate to + 0.03 K/GPa and dT(c)/dP approximate to + 0.17 K/GPa, respectively. T-c(P) of HoNi2B2C and TmNi2B2C decreases in a nearly linear fashion with dT(c)/dP approximate to-0.25 K/GPa and -0.45 K/GPa, respectively. The discussion of the T-c(P) results focuses on the shape of the density of states near the Fermi level. The strong negative dT(c)/dP value (as well as the low T-c(P = 0)) of TmNi2B2C is attributed to the existence of magnetic correlations above T-c. C1 LOS ALAMOS NATL LAB,CONDENSED MATTER & THERMAL PHYS GRP MST 10,LOS ALAMOS,NM 87545. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. CNRS,UPR 209,F-92195 MEUDON,FRANCE. RI Canfield, Paul/H-2698-2014 NR 23 TC 39 Z9 39 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD FEB 1 PY 1995 VL 242 IS 1-2 BP 169 EP 173 DI 10.1016/0921-4534(94)02391-3 PG 5 WC Physics, Applied SC Physics GA QF501 UT WOS:A1995QF50100023 ER PT J AU JILES, DC THOELKE, JB AF JILES, DC THOELKE, JB TI MAGNETIZATION AND MAGNETOSTRICTION IN TERBIUM DYSPROSIUM IRON-ALLOYS SO PHYSICA STATUS SOLIDI A-APPLIED RESEARCH LA English DT Article ID TERFENOL-D; SINGLE-CRYSTALS; HEAT-TREATMENT AB Some results of magnetostriction and magnetization measurements are presented on a small representative sample of four specimens from an original study of over one hundred specimens of the Tb-Dy-Fe alloy which we have measured in recent years. The results of these investigations show a progressive improvement in strain amplitude, DELTAlambda, and strain derivative, dlambda/dH, of the material. The highest strain amplitude observed to date is DELTAgamma = 2.2 x 10(-3) and the highest strain derivative is (dlambda/dH)max = 0.312 x 10(-6) A-1 m. These improvements result mostly from the reduction of the volume fraction of second phase material and an increase in the fractional occupancy of domains oriented initially at right angles to the unique axis of the cylindrical specimens. The initial domain alignment is a result of thermomagnetic treatment of the finished specimens in which the materials are subjected to a magnetic field normal to the axis of the specimens. RP JILES, DC (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. RI Jiles, David/H-9548-2012 NR 13 TC 31 Z9 33 U1 1 U2 5 PU AKADEMIE VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0031-8965 J9 PHYS STATUS SOLIDI A JI Phys. Status Solidi A-Appl. Res. PD FEB PY 1995 VL 147 IS 2 BP 535 EP 551 DI 10.1002/pssa.2211470224 PG 17 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA QM183 UT WOS:A1995QM18300023 ER PT J AU WONG, KL BEIERSDORFER, P REED, KJ VOGEL, DA AF WONG, KL BEIERSDORFER, P REED, KJ VOGEL, DA TI ELECTRON-IMPACT EXCITATION CROSS-SECTION MEASUREMENTS OF HIGHLY-CHARGED HELIUM-LIKE AND LITHIUM-LIKE IONS SO PHYSICAL REVIEW A LA English DT Article ID SATELLITE SPECTRA; HE-LIKE; BEAM; POLARIZATION; TITANIUM; RATES; TRAP C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 15 TC 48 Z9 48 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP 1214 EP 1220 DI 10.1103/PhysRevA.51.1214 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100046 ER PT J AU BURGDORFER, J REINHOLD, CO STERNBERG, J WANG, JY AF BURGDORFER, J REINHOLD, CO STERNBERG, J WANG, JY TI SEMICLASSICAL THEORY OF ELASTIC ELECTRON-ATOM SCATTERING SO PHYSICAL REVIEW A LA English DT Article ID CROSS-SECTIONS; HEAVY-ATOMS; INERT-GASES; KRYPTON; ANGLES; MODEL; XENON; PEAK C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP BURGDORFER, J (reprint author), UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996, USA. OI Reinhold, Carlos/0000-0003-0100-4962 NR 25 TC 19 Z9 19 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP 1248 EP 1252 DI 10.1103/PhysRevA.51.1248 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100051 ER PT J AU LERNER, PB COHEN, JS AF LERNER, PB COHEN, JS TI FORMATION OF HOT-ELECTRONS IN NOBLE-GASES BY INTENSE-FIELD IONIZATION - A QUASI-STATIC TUNNELING, INDEPENDENT-ELECTRON MODEL SO PHYSICAL REVIEW A LA English DT Article ID ABOVE-THRESHOLD IONIZATION; ATOMS RP LERNER, PB (reprint author), LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. OI Lerner , Peter/0000-0002-3086-0170 NR 27 TC 3 Z9 3 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP 1464 EP 1470 DI 10.1103/PhysRevA.51.1464 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100077 ER PT J AU LEWENSTEIN, M KULANDER, KC SCHAFER, KJ BUCKSBAUM, PH AF LEWENSTEIN, M KULANDER, KC SCHAFER, KJ BUCKSBAUM, PH TI RINGS IN ABOVE-THRESHOLD IONIZATION - A QUASI-CLASSICAL ANALYSIS SO PHYSICAL REVIEW A LA English DT Article ID ORDER HARMONIC-GENERATION; ELECTRON-SCATTERING; TUNNEL IONIZATION; LASER FIELDS; ATOMS; MULTIPHOTON; TRANSITIONS; GASES; IONS C1 POLISH ACAD SCI,CTR THEORET PHYS,PL-02668 WARSAW,POLAND. LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94550. UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109. UNIV MICHIGAN,CTR ULTRAFAST OPT SCI,ANN ARBOR,MI 48109. RP LEWENSTEIN, M (reprint author), UNIV COLORADO,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309, USA. RI Lewenstein, Maciej/I-1337-2014 OI Lewenstein, Maciej/0000-0002-0210-7800 NR 37 TC 199 Z9 199 U1 1 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP 1495 EP 1507 DI 10.1103/PhysRevA.51.1495 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100081 ER PT J AU ELLIOTT, SR BEIERSDORFER, P NILSEN, J AF ELLIOTT, SR BEIERSDORFER, P NILSEN, J TI MEASUREMENT OF THE 3D-4F TRANSITION IN NI-LIKE ER FOR USE IN A PHOTOPUMPED X-RAY-LASER SCHEME SO PHYSICAL REVIEW A LA English DT Note ID NICKEL-LIKE IONS; LINE OVERLAP; SPECTRA RP ELLIOTT, SR (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 17 TC 5 Z9 5 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP 1683 EP 1686 DI 10.1103/PhysRevA.51.1683 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100106 ER PT J AU KALUZA, M MUCKERMAN, JT AF KALUZA, M MUCKERMAN, JT TI SHORT-PULSE POPULATION-INVERSION AND TRANSMITTANCE SO PHYSICAL REVIEW A LA English DT Note ID ELECTROMAGNETIC PULSES; COHERENT AMPLIFICATION; RYDBERG ATOMS; STABILIZATION; GENERATION; LASER; IONIZATION RP KALUZA, M (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. RI Muckerman, James/D-8752-2013 NR 27 TC 8 Z9 10 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP 1694 EP 1697 DI 10.1103/PhysRevA.51.1694 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100109 ER PT J AU COPNELL, J PHILLIPS, WR BARNETT, AR REHM, KE AHMAD, I GEHRING, J GLAGOLA, BG KUTSCHERA, W AF COPNELL, J PHILLIPS, WR BARNETT, AR REHM, KE AHMAD, I GEHRING, J GLAGOLA, BG KUTSCHERA, W TI INTERNAL-CONVERSION IN HIGHLY STRIPPED KR-83 IONS SO PHYSICAL REVIEW A LA English DT Note C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. RP COPNELL, J (reprint author), UNIV MANCHESTER,DEPT PHYS & ASTRON,MANCHESTER M13 9PL,LANCS,ENGLAND. NR 9 TC 2 Z9 2 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP R879 EP R881 DI 10.1103/PhysRevA.51.R879 PG 3 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100003 ER PT J AU DITMIRE, T CRANE, JK NGUYEN, H DASILVA, LB PERRY, MD AF DITMIRE, T CRANE, JK NGUYEN, H DASILVA, LB PERRY, MD TI ENERGY-YIELD AND CONVERSION-EFFICIENCY MEASUREMENTS OF HIGH-ORDER HARMONIC RADIATION SO PHYSICAL REVIEW A LA English DT Note ID RARE-GASES; GENERATION; LASER; PLASMA; IONIZATION; INTENSITY; HELIUM RP DITMIRE, T (reprint author), LAWRENCE LIVERMORE NATL LAB,LASER PROGRAM,L-443,POB 808,LIVERMORE,CA 94550, USA. NR 21 TC 68 Z9 68 U1 1 U2 10 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP R902 EP R905 DI 10.1103/PhysRevA.51.R902 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100009 ER PT J AU VRAKKING, MJJ LEE, YT AF VRAKKING, MJJ LEE, YT TI ENHANCEMENTS IN THE LIFETIMES OF NO RYDBERG STATES IN DC ELECTRIC-FIELDS - IMPLICATIONS FOR ZERO-ELECTRON-KINETIC-ENERGY PHOTOELECTRON-SPECTROSCOPY EXPERIMENTS SO PHYSICAL REVIEW A LA English DT Note ID NITRIC-OXIDE; RESOLUTION C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RP VRAKKING, MJJ (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720, USA. RI Lee, Yuan-Tseh/F-7914-2012 NR 9 TC 36 Z9 36 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD FEB PY 1995 VL 51 IS 2 BP R894 EP R897 DI 10.1103/PhysRevA.51.R894 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QH071 UT WOS:A1995QH07100007 ER PT J AU SIDEBOTTOM, DL GREEN, PF BROW, RK AF SIDEBOTTOM, DL GREEN, PF BROW, RK TI ANOMALOUS-DIFFUSION MODEL OF IONIC TRANSPORT IN OXIDE GLASSES SO PHYSICAL REVIEW B LA English DT Article ID NON-DEBYE RELAXATION; DISORDERED MATERIALS; DIELECTRIC RESPONSE; ALPHA-RELAXATION; AC CONDUCTIVITY; CONDUCTORS; BEHAVIOR; SYSTEMS RP SIDEBOTTOM, DL (reprint author), SANDIA NATL LABS,DEPT 1845,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 30 TC 43 Z9 43 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 2770 EP 2776 DI 10.1103/PhysRevB.51.2770 PG 7 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200015 ER PT J AU SIGALAS, MM SOUKOULIS, CM AF SIGALAS, MM SOUKOULIS, CM TI ELASTIC-WAVE PROPAGATION THROUGH DISORDERED AND/OR ABSORPTIVE LAYERED SYSTEMS SO PHYSICAL REVIEW B LA English DT Article ID BAND-STRUCTURE; LOCALIZATION; MEDIA; INFINITE C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. RP SIGALAS, MM (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. RI Soukoulis, Costas/A-5295-2008 NR 25 TC 54 Z9 72 U1 0 U2 13 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 2780 EP 2789 DI 10.1103/PhysRevB.51.2780 PG 10 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200017 ER PT J AU LORENZO, JE TRANQUADA, JM BUTTREY, DJ SACHAN, V AF LORENZO, JE TRANQUADA, JM BUTTREY, DJ SACHAN, V TI NEUTRON-DIFFRACTION STUDIES ON THE TIME-DEPENDENCE OF THE OXYGEN ORDERING IN LA2NIO4.105 SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-SCATTERING; LA2NIO4+DELTA; NUCLEATION; KINETICS; GROWTH; CU3AU C1 UNIV DELAWARE,DEPT CHEM ENGN,NEWARK,DE 19716. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RI Tranquada, John/A-9832-2009 OI Tranquada, John/0000-0003-4984-8857 NR 18 TC 18 Z9 18 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3176 EP 3180 DI 10.1103/PhysRevB.51.3176 PG 5 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200070 ER PT J AU WAKABAYASHI, N NICKLOW, RM AF WAKABAYASHI, N NICKLOW, RM TI PERTURBED PHONONS IN PYROLYTIC-GRAPHITE STUDIED BY NEUTRON-SCATTERING TECHNIQUES SO PHYSICAL REVIEW B LA English DT Note ID X-RAY; SURFACE C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. RP WAKABAYASHI, N (reprint author), KEIO UNIV,DEPT PHYS,KOHOKU KU,3-14-1 HIYOSHI,YOKOHAMA,KANAGAWA 223,JAPAN. NR 8 TC 0 Z9 0 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3214 EP 3217 DI 10.1103/PhysRevB.51.3214 PG 4 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200078 ER PT J AU GEHRING, PM HIROTA, K MAJKRZAK, CF SHIRANE, G AF GEHRING, PM HIROTA, K MAJKRZAK, CF SHIRANE, G TI ABSENCE OF THE ANOMALOUS 2ND LENGTH SCALE IN THE BULK OF A TERBIUM SINGLE-CRYSTAL SO PHYSICAL REVIEW B LA English DT Note ID CRITICAL FLUCTUATIONS; SRTIO3 C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP GEHRING, PM (reprint author), NIST,GAITHERSBURG,MD 20899, USA. RI Hirota, Kazuma/C-6797-2008; OI Gehring, Peter/0000-0002-9236-2046 NR 12 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3234 EP 3237 DI 10.1103/PhysRevB.51.3234 PG 4 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200083 ER PT J AU BUSSMANNHOLDER, A BISHOP, AR AF BUSSMANNHOLDER, A BISHOP, AR TI ANHARMONIC ELECTRON AND PHONON EFFECTS IN THE C-AXIS INFRARED CONDUCTIVITY OF HIGH-T-C OXIDES SO PHYSICAL REVIEW B LA English DT Note ID HIGH-TEMPERATURE SUPERCONDUCTIVITY C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP BUSSMANNHOLDER, A (reprint author), MAX PLANCK INST FESTKORPERFORSCH,HEISENBERGSTR 1,D-70569 STUTTGART,GERMANY. NR 20 TC 8 Z9 8 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3246 EP 3249 DI 10.1103/PhysRevB.51.3246 PG 4 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200086 ER PT J AU LEDVIJ, M KLEMM, RA AF LEDVIJ, M KLEMM, RA TI DEPENDENCE OF THE JOSEPHSON COUPLING OF UNCONVENTIONAL SUPERCONDUCTORS ON THE PROPERTIES OF THE TUNNELING BARRIER SO PHYSICAL REVIEW B LA English DT Note ID TC RP LEDVIJ, M (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 19 TC 28 Z9 28 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3269 EP 3272 DI 10.1103/PhysRevB.51.3269 PG 4 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200092 ER PT J AU ANDREWS, AB JOYCE, JJ ARKO, AJ THOMPSON, JD TANG, J LAWRENCE, JM HEMMINGER, JC AF ANDREWS, AB JOYCE, JJ ARKO, AJ THOMPSON, JD TANG, J LAWRENCE, JM HEMMINGER, JC TI EVIDENCE FOR POSSIBLE 4F BANDS AT T-MUCH-GREATER-THAN-T-K IN THE HEAVY-FERMION SINGLE-CRYSTAL CEPT2+X SO PHYSICAL REVIEW B LA English DT Note ID CERIUM; MODEL C1 UNIV CALIF IRVINE,INST SURFACE & INTERFACE SCI,IRVINE,CA 92717. RP ANDREWS, AB (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 16 TC 74 Z9 74 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3277 EP 3280 DI 10.1103/PhysRevB.51.3277 PG 4 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200095 ER PT J AU MA, SL REICH, DH BROHOLM, C STERNLIEB, BJ ERWIN, RW AF MA, SL REICH, DH BROHOLM, C STERNLIEB, BJ ERWIN, RW TI SPIN CORRELATIONS AT FINITE-TEMPERATURE IN AN S=1 ONE-DIMENSIONAL ANTIFERROMAGNET SO PHYSICAL REVIEW B LA English DT Note ID S = 1; CHAIN HEISENBERG-ANTIFERROMAGNET; HALDANE-GAP; MAGNETIC CORRELATIONS; MONTE-CARLO; SIGMA-MODEL; EXCITATIONS; BEHAVIOR; NENP C1 NIST,GAITHERSBURG,MD 20899. BROOKHAVEN NATL LAB,UPTON,NY 11973. RP MA, SL (reprint author), JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218, USA. RI Broholm, Collin/E-8228-2011 OI Broholm, Collin/0000-0002-1569-9892 NR 36 TC 22 Z9 22 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3289 EP 3292 DI 10.1103/PhysRevB.51.3289 PG 4 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200098 ER PT J AU LAHAISE, UGL CHEN, Q DELONG, LE BROCK, CP WANG, HH CARLSON, KD SCHLUETER, JA WILLIAMS, JM AF LAHAISE, UGL CHEN, Q DELONG, LE BROCK, CP WANG, HH CARLSON, KD SCHLUETER, JA WILLIAMS, JM TI ANOMALOUS VORTEX DYNAMICS IN KAPPA-[BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE](2)CU[N(CN)(2)]BR - EVIDENCE FOR FIELD-INDUCED MAGNETIC ORDER AND UNCONVENTIONAL SUPERCONDUCTIVITY SO PHYSICAL REVIEW B LA English DT Note ID FLUX-LINE LATTICE; PRESSURE ORGANIC SUPERCONDUCTOR; VIBRATING SUPERCONDUCTORS; KAPPA-(BEDT-TTF)2CUBR; BEHAVIOR; BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE; TEMPERATURE; VORTICES C1 UNIV KENTUCKY,DEPT PHYS & ASTRON,LEXINGTON,KY 40506. UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. NR 27 TC 5 Z9 5 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 5 BP 3301 EP 3304 DI 10.1103/PhysRevB.51.3301 PG 4 WC Physics, Condensed Matter SC Physics GA QG312 UT WOS:A1995QG31200101 ER PT J AU BARNES, RG HAN, JW TORGESON, DR BAKER, DB CONRADI, MS NORBERG, RE AF BARNES, RG HAN, JW TORGESON, DR BAKER, DB CONRADI, MS NORBERG, RE TI NORMAL AND ANOMALOUS NUCLEAR-SPIN-LATTICE RELAXATION AT HIGH-TEMPERATURES IN SC-H(D), Y-H, AND LU-H SOLID-SOLUTIONS SO PHYSICAL REVIEW B LA English DT Article ID MAGNETIC-RESONANCE; ELECTRONIC-STRUCTURE; METAL-HYDRIDES; DYNAMICAL EVIDENCE; HYDROGEN; PROTON; TRANSITION; SCANDIUM; NMR; DIHYDRIDES C1 IOWA STATE UNIV SCI & TECHNOL, DEPT PHYS, AMES, IA 50011 USA. US DOE, AMES LAB, AMES, IA 50011 USA. WASHINGTON UNIV, DEPT PHYS, ST LOUIS, MO 63130 USA. NR 30 TC 11 Z9 11 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 6 BP 3503 EP 3511 DI 10.1103/PhysRevB.51.3503 PG 9 WC Physics, Condensed Matter SC Physics GA QH079 UT WOS:A1995QH07900021 ER PT J AU RODRIGUEZ, JP BONCA, J FERRER, J AF RODRIGUEZ, JP BONCA, J FERRER, J TI RANDOM FRUSTRATION IN A 2-DIMENSIONAL SPIN-1/2 HEISENBERG-ANTIFERROMAGNET SO PHYSICAL REVIEW B LA English DT Article ID MAGNETIC PHASE-DIAGRAM; TEMPERATURES; EXCITATIONS; DYNAMICS; LA2CUO4 C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. CALIF STATE UNIV LOS ANGELES,DEPT PHYS & ASTRON,LOS ANGELES,CA 90032. UNIV LJUBLJANA,JOZEF STEFAN INST,LJUBLJANA 61111,SLOVENIA. UNIV AUTONOMA MADRID,DEPT FIS MAT CONDENSADA,CANTO BLANCO,SPAIN. RP RODRIGUEZ, JP (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. RI Ferrer, Jaime/G-3888-2011 OI Ferrer, Jaime/0000-0002-4067-2325 NR 20 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 6 BP 3616 EP 3619 DI 10.1103/PhysRevB.51.3616 PG 4 WC Physics, Condensed Matter SC Physics GA QH079 UT WOS:A1995QH07900034 ER PT J AU BLACKSTEAD, HA PULLING, DB PARANTHAMAN, M BRYNESTAD, J AF BLACKSTEAD, HA PULLING, DB PARANTHAMAN, M BRYNESTAD, J TI FIELD AND TEMPERATURE-DEPENDENT SURFACE-RESISTANCE OF SUPERCONDUCTING POLYCRYSTALLINE MULTIPLE-PHASE HG-BA-CA-CU-O - EVIDENCE FOR DIRTY-LIMIT BEHAVIOR SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TC SUPERCONDUCTORS; STATIC MAGNETIC-FIELD; MELTED FLUX LIQUIDS; VORTEX FLUCTUATIONS; II SUPERCONDUCTORS; SLIP RESISTIVITY; MIXED-STATE; CRYSTALS; FLOW; YBA2CU3O7-DELTA C1 OAK RIDGE NATL LAB, DIV CHEM, OAK RIDGE, TN 37831 USA. RP UNIV NOTRE DAME, DEPT PHYS, NOTRE DAME, IN 46556 USA. RI Paranthaman, Mariappan/N-3866-2015 OI Paranthaman, Mariappan/0000-0003-3009-8531 NR 39 TC 4 Z9 4 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 6 BP 3783 EP 3790 DI 10.1103/PhysRevB.51.3783 PG 8 WC Physics, Condensed Matter SC Physics GA QH079 UT WOS:A1995QH07900057 ER PT J AU TRALSHAWALA, N ZASADZINSKI, JF COFFEY, L GAI, W ROMALIS, M HUANG, Q VAGLIO, R GRAY, KE AF TRALSHAWALA, N ZASADZINSKI, JF COFFEY, L GAI, W ROMALIS, M HUANG, Q VAGLIO, R GRAY, KE TI TUNNELING, ALPHA-F-2(OMEGA), AND TRANSPORT IN SUPERCONDUCTORS - NB, V, VN, BA1-XKXBIO3, AND ND1.85CE0.15CUO4 SO PHYSICAL REVIEW B LA English DT Article ID NORMAL-STATE; ELECTRONIC-STRUCTURE; FERMI-SURFACE; RESISTIVITY; METALS; FILMS; ND2-XCEXCUO4-Y; TRANSITION; YBA2CU3O7; A15 C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP TRALSHAWALA, N (reprint author), IIT,DEPT PHYS,CHICAGO,IL 60616, USA. NR 43 TC 26 Z9 26 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 6 BP 3812 EP 3819 DI 10.1103/PhysRevB.51.3812 PG 8 WC Physics, Condensed Matter SC Physics GA QH079 UT WOS:A1995QH07900061 ER PT J AU KONCZYKOWSKI, M CHIKUMOTO, N VINOKUR, VM FEIGELMAN, MV AF KONCZYKOWSKI, M CHIKUMOTO, N VINOKUR, VM FEIGELMAN, MV TI EXPERIMENTAL-EVIDENCE FOR BOSE-GLASS BEHAVIOR IN BI2SR2CACU2O8 CRYSTALS WITH COLUMNAR DEFECTS SO PHYSICAL REVIEW B LA English DT Note ID HIGH-TEMPERATURE SUPERCONDUCTORS; FLUX CREEP; YBA2CU3O7 CRYSTALS; LOCALIZATION; IRRADIATION; PENETRATION; OXIDES; STATE; PHASE C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. LD LANDAU THEORET PHYS INST,MOSCOW 117940,RUSSIA. RP KONCZYKOWSKI, M (reprint author), ECOLE POLYTECH,SOLIDES IRRADIES LAB,F-91128 PALAISEAU,FRANCE. RI Feigelman, Mikhail/M-4113-2013 NR 22 TC 43 Z9 43 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 6 BP 3957 EP 3960 DI 10.1103/PhysRevB.51.3957 PG 4 WC Physics, Condensed Matter SC Physics GA QH079 UT WOS:A1995QH07900086 ER PT J AU ZHU, Q COX, DE FISCHER, JE AF ZHU, Q COX, DE FISCHER, JE TI PHASE-TRANSITIONS IN KC60 - DIMER FORMATION VIA RAPID QUENCHING SO PHYSICAL REVIEW B LA English DT Note ID SOLID C-60 C1 UNIV PENN,DEPT MAT SCI & ENGN,PHILADELPHIA,PA 19104. UNIV PENN,RES STRUCT MATTER LAB,PHILADELPHIA,PA 19104. RP ZHU, Q (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 20 TC 112 Z9 113 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. 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NR 27 TC 22 Z9 22 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD FEB 1 PY 1995 VL 51 IS 6 BP 3981 EP 3984 DI 10.1103/PhysRevB.51.3981 PG 4 WC Physics, Condensed Matter SC Physics GA QH079 UT WOS:A1995QH07900093 ER PT J AU DOVER, CB FESHBACH, H GAL, A AF DOVER, CB FESHBACH, H GAL, A TI SIGNATURES OF LAMBDA-SIGMA MIXING IN THE MAGNETIC-MOMENTS OF HYPERNUCLEI SO PHYSICAL REVIEW C LA English DT Article ID BARYON-BARYON SCATTERING; MEAN-FIELD THEORY; EXCHANGE-POTENTIAL APPROACH; UNITARY SYMMETRY; SPIN POLARIZATION; HYPER-NUCLEI; CURRENTS; STATES C1 MIT,CTR THEORET PHYS,NUCL SCI LAB,CAMBRIDGE,MA 02139. MIT,DEPT PHYS,CAMBRIDGE,MA 02139. HEBREW UNIV JERUSALEM,RACAH INST PHYS,IL-91904 JERUSALEM,ISRAEL. RP DOVER, CB (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 42 TC 14 Z9 14 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD FEB PY 1995 VL 51 IS 2 BP 541 EP 546 DI 10.1103/PhysRevC.51.541 PG 6 WC Physics, Nuclear SC Physics GA QH083 UT WOS:A1995QH08300015 ER PT J AU LUND, BJ BATEMAN, NPT UTKU, S HOREN, DJ SATCHLER, GR AF LUND, BJ BATEMAN, NPT UTKU, S HOREN, DJ SATCHLER, GR TI ISOSPIN CHARACTER OF TRANSITIONS OF THE 2(1)(+) AND 3(1)(-) STATES OF ZR-90,ZR-92,ZR-94,ZR-96 SO PHYSICAL REVIEW C LA English DT Article ID COUPLED-CHANNELS CALCULATIONS; IMPLICIT FOLDING PROCEDURE; EVEN-EVEN NUCLIDES; SCATTERING; ZR-94; EXCITATION C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP LUND, BJ (reprint author), YALE UNIV,AW WRIGHT NUCL STRUCT LAB,NEW HAVEN,CT 06511, USA. NR 21 TC 12 Z9 12 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. 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