FN Thomson Reuters Web of Science™ VR 1.0 PT J AU POLLACK, NR HOLDER, GD WARZINSKI, RP AF POLLACK, NR HOLDER, GD WARZINSKI, RP TI PRETREATMENT FOR COAL-LIQUEFACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CALGON CARBON CORP,ROBINSON TOWNSHIP,PA 15205. UNIV PITTSBURGH,DEPT CHEM & PETR ENGN,PITTSBURGH,PA 15261. US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 3 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301554 ER PT J AU SOMORJAI, GA AF SOMORJAI, GA TI THE STATE OF ORGANIC-SURFACE CHEMISTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 3 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301024 ER PT J AU BLANN, M MUSTAFA, MG AF BLANN, M MUSTAFA, MG TI STATISTICAL DYNAMIC INTERACTIONS - THE SDI OF HEAVY-ION REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 5 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400005 ER PT J AU BRINKER, CJ AF BRINKER, CJ TI CONTROLLED SOL-GEL ROUTES TO AMORPHOUS MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DIV 1846,ALBUQUERQUE,NM 87185. UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. UNIV NEW MEXICO,DEPT CHEM ENGN,ALBUQUERQUE,NM 87131. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 6 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301901 ER PT J AU DANEN, WC FERRIS, MJ LYMAN, JL OLDENBORG, RC ROFER, CK STREIT, GE AF DANEN, WC FERRIS, MJ LYMAN, JL OLDENBORG, RC ROFER, CK STREIT, GE TI METHANE TO METHANOL CONVERSION BY DIRECT PARTIAL OXIDATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 2 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 6 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400482 ER PT J AU MORETTO, LG WOZNIAK, GJ AF MORETTO, LG WOZNIAK, GJ TI MULTIFRAGMENT DECAY OF HOT NUCLEI - DYNAMICS OR STATISTICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 6 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400006 ER PT J AU BARKS, RE AF BARKS, RE TI A VIEW OF TECHNOLOGY OUTREACH FROM A NATIONAL LABORATORY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 7 EP ACSC PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401464 ER PT J AU HORWITZ, EP DIETZ, ML AF HORWITZ, EP DIETZ, ML TI EXTRACTION OF STRONTIUM FROM NITRIC-ACID SOLUTIONS USING DICYCLOHEXANO-18-CROWN-6 AND ITS DERIVATIVES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 7 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301760 ER PT J AU NAMBOODIRI, MN BRITT, HC FIELDS, DJ HANSEN, LF LANIER, RG SANGSTER, TC STRUBLE, GL BEGEMANNBLAICH, M BLAICH, T FOWLER, MM WILHELMY, JB KAUFMAN, SB VIDEBAEK, F CHAN, YD HARMON, A POULIOT, J STOKSTAD, RG FRAENKEL, Z PEILERT, G STOCKER, H GREINER, W AF NAMBOODIRI, MN BRITT, HC FIELDS, DJ HANSEN, LF LANIER, RG SANGSTER, TC STRUBLE, GL BEGEMANNBLAICH, M BLAICH, T FOWLER, MM WILHELMY, JB KAUFMAN, SB VIDEBAEK, F CHAN, YD HARMON, A POULIOT, J STOKSTAD, RG FRAENKEL, Z PEILERT, G STOCKER, H GREINER, W TI FRAGMENTATION AND FISSION IN HEAVY-ION REACTIONS AT 50-100 MEV/A SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV FRANKFURT,INST THEORET PHYS,W-6000 FRANKFURT 1,GERMANY. WEIZMANN INST SCI,IL-76100 REHOVOT,ISRAEL. RI Stoecker, Horst/D-6173-2013 OI Stoecker, Horst/0000-0002-3282-3664 NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 7 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400007 ER PT J AU WARZINSKI, RP HOLDER, GD AF WARZINSKI, RP HOLDER, GD TI MORPHOLOGY AND LIQUEFACTION CHARACTERISTICS OF PYRIDINE-EXTRACTED ILLINOIS NO-6 COAL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. UNIV PITTSBURGH,DEPT CHEM & PETR ENGN,PITTSBURGH,PA 15261. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 7 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301558 ER PT J AU SACHLEBEN, RA MOYER, BA KELLEHER, SA CASE, FI GARMON, SA NOETH, GJ AF SACHLEBEN, RA MOYER, BA KELLEHER, SA CASE, FI GARMON, SA NOETH, GJ TI MACROCYCLE SOLUBILITY AND ORGANOPHILICITY - EFFECT OF ALKYL SUBSTITUTION ON THE EXTRACTION PROPERTIES OF BENZO-SUBSTITUTED IONIZABLE LARIAT ETHERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37830. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 8 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301761 ER PT J AU COPENHAVER, AS KOBER, EM RITCHIE, JP AF COPENHAVER, AS KOBER, EM RITCHIE, JP TI THE REPRESENTATION OF ELECTROSTATIC FIELDS IN LATTICE ENERGY CALCULATIONS BY ATOMIC MULTIPOLE EXPANSIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract ID DENSITY DISTRIBUTION ANALYSIS C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 9 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301373 ER PT J AU MOYER, BA SACHLEBEN, RA WATSON, JR WILSON, NM CASE, GN ALEXANDRATOS, SD AF MOYER, BA SACHLEBEN, RA WATSON, JR WILSON, NM CASE, GN ALEXANDRATOS, SD TI MACROCYCLIC AND ACYCLIC MULTIDENTATE THIA ETHERS AS SYNERGISTS FOR ION-EXCHANGE SEPARATIONS OF CU(II) IN SOLVENT AND RESIN EXTRACTION SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 10 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301763 ER PT J AU DOSE, EV GUIOCHON, G AF DOSE, EV GUIOCHON, G TI HIGH-RESOLUTION MODELING OF NONLINEAR ELECTROPHORETIC PHENOMENA SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 11 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300209 ER PT J AU SOMORJAI, GA SALMERON, M AF SOMORJAI, GA SALMERON, M TI THE PRESENT STATE OF UNDERSTANDING OF THE ROLE OF SULFUR IN MODIFYING THE FRICTION AND LUBRICITY OF METAL-SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 11 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301032 ER PT J AU HARMON, LH LILLIAN, D AF HARMON, LH LILLIAN, D TI DOES ENVIRONMENTAL RESTORATION AND WASTE MANAGEMENT LABORATORY OPERATIONS AND QUALITY ASSURANCE PROGRAMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,OFF TECHNOL DEV,DIV PROGRAM SUPPORT,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 13 EP ACSC PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401457 ER PT J AU NOID, DW SUMPTER, BG DARSEY, JA WUNDERLICH, B AF NOID, DW SUMPTER, BG DARSEY, JA WUNDERLICH, B TI MOLECULAR-DYNAMICS SIMULATION OF CRYSTALLINE POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DEPT CHEM,OAK RIDGE,TN 37831. UNIV ARKANSAS,DEPT CHEM,LITTLE ROCK,AR 72204. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 15 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301379 ER PT J AU GETINO, C SUMPTER, BG NOID, DW WUNDERLICH, B AF GETINO, C SUMPTER, BG NOID, DW WUNDERLICH, B TI INTERNAL ENERGY MIGRATION IN POLYMER CRYSTALS - A SEMICLASSICAL TRAJECTORY STUDY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 16 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301380 ER PT J AU STRASZHEIM, WE MARKUSZEWSKI, R AF STRASZHEIM, WE MARKUSZEWSKI, R TI AUTOMATED IMAGE-ANALYSIS OF THE ASSOCIATION OF ASH-FORMING MINERAL MATTER WITH COAL PARTICLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,FOSSIL ENERGY PROGRAM,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 16 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301567 ER PT J AU SUMPTER, BG GETINO, C NOID, DW XENOPOULOS, A WUNDERLICH, B AF SUMPTER, BG GETINO, C NOID, DW XENOPOULOS, A WUNDERLICH, B TI COMPUTATIONAL STUDIES OF SUBMICRON PROBING OF POLYMER SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 17 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301381 ER PT J AU DUEK, E AF DUEK, E TI EMPACT TEXAS - A LETTER OF INTENT TO THE SUPERCONDUCTING SUPERCOLLIDER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 18 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400018 ER PT J AU CHOI, MG ANGELICI, RJ AF CHOI, MG ANGELICI, RJ TI ETA-2- VERSUS SE-SELENOPHENE COORDINATION IN CP'(CO)2RE(SEL) AND SE-77 NMR-STUDIES OF DIFFERENT COORDINATION MODES OF SELENOPHENE IN TRANSITION-METAL COMPLEXES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 19 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301914 ER PT J AU SMITH, PH BRAINARD, JR SMITH, WH MORRIS, DE RYAN, RR AF SMITH, PH BRAINARD, JR SMITH, WH MORRIS, DE RYAN, RR TI FLUORIDE SELECTIVE CHELATORS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 19 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301772 ER PT J AU CUGINI, AV UTZ, BR KRASTMAN, D HICKEY, RF BALSONE, V AF CUGINI, AV UTZ, BR KRASTMAN, D HICKEY, RF BALSONE, V TI EFFECT OF ACTIVATION CONDITIONS ON DISPERSED IRON CATALYSTS IN COAL-LIQUEFACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. GILBERT COMMONWEALTH INC,LIBRARY,PA 15129. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 21 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301572 ER PT J AU VORRES, KS DANG, Y MALHOTRA, VM AF VORRES, KS DANG, Y MALHOTRA, VM TI DRYING OF BEULAH-ZAP LIGNITE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. SO ILLINOIS UNIV,DEPT PHYS,CARBONDALE,IL 62901. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 23 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301574 ER PT J AU BRIGHT, RM MCGOWAN, CW MARKUSZEWSKI, R AF BRIGHT, RM MCGOWAN, CW MARKUSZEWSKI, R TI A STUDY OF FLUORESCENCE RESULTING FROM THE OXIDATION OF COAL WITH PERCHLORIC-ACID SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 TENNESSEE TECHNOL UNIV,DEPT CHEM,COOKEVILLE,TN 38505. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 25 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300705 ER PT J AU CASTEN, RF AF CASTEN, RF TI TOPICS IN CURRENT NUCLEAR-STRUCTURE - EFFECTS OF THE P-N INTERACTION ON NUCLEAR COLLECTIVITY AND SIGNATURES OF GAMMA-SOFTNESS AND TRIAXIALITY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 25 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400025 ER PT J AU VONHALLE, ES WASSOM, JS AF VONHALLE, ES WASSOM, JS TI GENETIC TOXICOLOGY INFORMATION RESOURCES - ACCESS AND USE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,HUMAN GENOME & TOXICOL GRP,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 25 EP CINF PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300986 ER PT J AU AILEYTRENT, KS MCGOWAN, CW MARKUSZEWSKI, R AF AILEYTRENT, KS MCGOWAN, CW MARKUSZEWSKI, R TI THE ANALYSIS FOR ORGANOSULFUR COMPOUNDS IN PERCHLORIC-ACID SOLUTIONS RESULTING FROM THE OXIDATION OF COAL FOR THE DETERMINATION OF PYRITE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 TENNESSEE TECHNOL UNIV,DEPT CHEM,COOKEVILLE,TN 38505. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 26 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300706 ER PT J AU RIVARD, CJ NAGLE, NJ HIMMEL, ME AF RIVARD, CJ NAGLE, NJ HIMMEL, ME TI SECONDARY ANAEROBIC-DIGESTION OF TREATED, HIGHLY DEWATERED MUNICIPAL SEWAGE SLUDGES USING A NOVEL HIGH SOLIDS REACTOR SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,DIV FUELS & CHEM RES & ENGN,BIOTECHNOL RES BRANCH,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 26 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301409 ER PT J AU SOMORJAI, GA AF SOMORJAI, GA TI BUILDING MULTICOMPONENT, COMPLEX CATALYST SYSTEMS ON SINGLE-CRYSTAL SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 26 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301047 ER PT J AU MAJUMDAR, S CHA, JS PAPADOPOULOS, T SIRKAR, KK KIM, SS AF MAJUMDAR, S CHA, JS PAPADOPOULOS, T SIRKAR, KK KIM, SS TI A NOVEL LIQUID MEMBRANE TECHNIQUE FOR REMOVAL OF SO2/NOX FROM FLUE-GAS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 STEVENS INST TECHNOL LIB,DEPT CHEM & CHEM ENGN,HOBOKEN,NJ 07030. US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 28 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400501 ER PT J AU BERKOWITZ, J AF BERKOWITZ, J TI BONDING AND STRUCTURE OF SIHN AND SIHN+ BY VUV PHOTOIONIZATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 29 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400534 ER PT J AU BEUHLER, R CHU, YY FRIEDLANDER, G FRIEDMAN, L AF BEUHLER, R CHU, YY FRIEDLANDER, G FRIEDMAN, L TI DEUTERON-DEUTERON FUSION BY HEAVY-WATER CLUSTER IMPACT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 31 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400031 ER PT J AU BRITT, PF BUCHANAN, AC HITSMAN, VM AF BRITT, PF BUCHANAN, AC HITSMAN, VM TI THERMOLYSIS OF SURFACE-IMMOBILIZED PHENETHYL PHENYL ETHER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 35 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301586 ER PT J AU ANGELICI, RJ AF ANGELICI, RJ TI POSSIBLE MODES OF THIOPHENE ADSORPTION ON HYDRODESULFURIZATION CATALYSTS - LESSONS FROM ORGANOMETALLIC MODEL COMPOUNDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 36 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301057 ER PT J AU BUCHANAN, AC BRITT, PF BIGGS, CA AF BUCHANAN, AC BRITT, PF BIGGS, CA TI ACID-CATALYZED CRACKING OF SURFACE-IMMOBILIZED 1,3-DIPHENYLPROPANE IN DISPERSED SOLIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 36 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301587 ER PT J AU NUNEZ, L ROGERS, RD CRABTREE, GW WELP, U UMEZAWA, A VANDERVOORT, K FANG, Y AF NUNEZ, L ROGERS, RD CRABTREE, GW WELP, U UMEZAWA, A VANDERVOORT, K FANG, Y TI MAGNETIC AND SUPERCONDUCTING PROPERTIES OF YBA2CU3-XFEXO7-DELTA SINGLE-CRYSTALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NO ILLINOIS UNIV,DEPT CHEM,DE KALB,IL 60115. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RI Rogers, Robin/C-8265-2013 OI Rogers, Robin/0000-0001-9843-7494 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 38 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301933 ER PT J AU ANDERSON, KB WINANS, RE AF ANDERSON, KB WINANS, RE TI STRUCTURE AND STRUCTURAL DIVERSITY IN RESINITES, AS DETERMINED BY PYROLYTIC TECHNIQUES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 41 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301592 ER PT J AU MANTICA, PF CARTER, HK ZIMMERMAN, BE WALTERS, WB RIKOVSKA, J STONE, NJ RUPNIK, D ZGANJAR, EF AF MANTICA, PF CARTER, HK ZIMMERMAN, BE WALTERS, WB RIKOVSKA, J STONE, NJ RUPNIK, D ZGANJAR, EF TI STRUCTURE OF EVEN-EVEN AND EVEN-ODD XE NUCLIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE ASSOCIATED UNIV,OAK RIDGE,TN 37831. UNIV MARYLAND,COLLEGE PK,MD 20742. UNIV OXFORD,OXFORD OX1 3PU,ENGLAND. LOUISIANA STATE UNIV,BATON ROUGE,LA 70803. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 41 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400041 ER PT J AU OVEREND, RP ELLIOTT, CA LAMB, K COUTURE, M CHORNET, E AF OVEREND, RP ELLIOTT, CA LAMB, K COUTURE, M CHORNET, E TI THE ANAEROBIC-DIGESTION OF TREATED WOOD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,BIOMASS POWER PROGRAM,GOLDEN,CO 80401. NATL RES COUNCIL CANADA,DIV BIOL SCI,OTTAWA K1A 0R6,ONTARIO,CANADA. UNIV SHERBROOKE,SHERBROOKE J1K 2R1,QUEBEC,CANADA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 41 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300642 ER PT J AU EVANS, RJ AGBLEVOR, FA CHUM, HL AF EVANS, RJ AGBLEVOR, FA CHUM, HL TI THE CHARACTERIZATION OF LIGNIN BY THE INTEGRATED ANALYSIS OF MULTI SOURCE SPECTROMETRIC TECHNIQUES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,CHEM CONVERS BRANCH,GOLDEN,CO 80401. EASTMAN KODAK CO,CHEMOMETR LAB,ROCHESTER,NY 14650. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 42 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300643 ER PT J AU FLETCHER, TH GRANT, DM PUGMIRE, RJ AF FLETCHER, TH GRANT, DM PUGMIRE, RJ TI PREDICTING VAPOR-PRESSURES OF TAR AND METAPLAST DURING COAL PYROLYSIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94550. UNIV UTAH,DEPT CHEM,SALT LAKE CITY,UT 84112. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 42 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301593 ER PT J AU ZIMMERMAN, BE WALTERS, WB MANTICA, PF CARTER, HK STONE, NJ RIKOVSKA, J VORKAPIC, D PAAR, V AF ZIMMERMAN, BE WALTERS, WB MANTICA, PF CARTER, HK STONE, NJ RIKOVSKA, J VORKAPIC, D PAAR, V TI INTRUDER STATES, ODD-ODD NUCLEI AND SUPERDEFORMATION - DECAY OF I-114, I-116 TO LEVELS OF TE-114, TE-116 AND STRUCTURE OF NEUTRON DEFICIENT ODD-ODD SB AND I-NUCLIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV MARYLAND,COLLEGE PK,MD 20742. OAK RIDGE ASSOCIATED UNIV,OAK RIDGE,TN 37831. UNIV OXFORD,OXFORD OX1 3PU,ENGLAND. UNIV ZAGREB,YU-41000 ZAGREB,YUGOSLAVIA. RI Paar, Vladimir/D-8009-2015 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 42 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400042 ER PT J AU FELIU, LA POLANCO, A ZUBKOWSKI, JD PERRY, DL AF FELIU, LA POLANCO, A ZUBKOWSKI, JD PERRY, DL TI SYNTHESIS, CHEMISTRY, AND STRUCTURAL ASPECTS OF THE COPPER(II)-2,2'-BIPYRIDINE SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. JACKSON STATE UNIV,DEPT CHEM,JACKSON,MS 39217. UNIV METROPOLITANA,RIO PIEDRAS,PR 00928. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 43 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301938 ER PT J AU HAMES, B BLACK, SK AGBLEVOR, F EVANS, R JOHNSON, DK CHUM, HL AF HAMES, B BLACK, SK AGBLEVOR, F EVANS, R JOHNSON, DK CHUM, HL TI MEASUREMENT OF THE FUNCTIONAL-GROUP CONTENTS OF LIGNINS USING FTIR AND PARTIAL LEAST-SQUARES REGRESSION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,CHEM CONVERS RES BRANCH,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 43 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300644 ER PT J AU WOHN, FK HILL, JC MACH, H SISTEMICH, K MOLNAR, G GILL, RL KRIPS, W MOSZYNSKI, M BRENNER, DS AF WOHN, FK HILL, JC MACH, H SISTEMICH, K MOLNAR, G GILL, RL KRIPS, W MOSZYNSKI, M BRENNER, DS TI STRUCTURE OF NEUTRON-RICH SR, Y, AND ZR NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL, AMES, IA 50011 USA. UNIV UPPSALA, STUDSVIK RES LAB, S-61182 NYKOPING, SWEDEN. FORSCHUNGSZENTRUM JULICH, W-5170 JULICH, GERMANY. CLARK UNIV, WORCESTER, MA 01610 USA. BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 43 EP NUCL PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400043 ER PT J AU BOZELL, JJ HAMES, BR CHUM, HL AF BOZELL, JJ HAMES, BR CHUM, HL TI METAL-CATALYZED OXIDATION OF LIGNIN MODELS - EFFECT OF CATALYST STRUCTURE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,CHEM CONVERS RES BRANCH,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 44 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300645 ER PT J AU PERRY, DL AF PERRY, DL TI APPLICATIONS OF SYNCHROTRON RADIATION STUDIES TO MIXED CHROMIUM(III,VI) ON PBS (GALENA) SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 44 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301939 ER PT J AU CHUM, HL AGBLEVOR, FA JOHNSON, DK HAMES, B OVEREND, RP MILNE, TA AF CHUM, HL AGBLEVOR, FA JOHNSON, DK HAMES, B OVEREND, RP MILNE, TA TI STATUS OF THE IEA BIOMASS FEEDSTOCKS AND LIGNIN ANALYSES ROUND-ROBINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 45 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300646 ER PT J AU TOTH, KS AF TOTH, KS TI INVESTIGATION OF NUCLEI CLOSE TO THE PROTON DRIP LINE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 45 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400045 ER PT J AU WHETSTONE, SL MEYER, RA AF WHETSTONE, SL MEYER, RA TI THE UNITED-STATES-DEPARTMENT-OF-ENERGY NUCLEAR-DATA AND LOW-ENERGY PHYSICS PROGRAMS - ASPECTS OF CURRENT OPERATIONAL STATUS AND FUTURE-DIRECTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,DIV NUCL PHYS,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 46 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400046 ER PT J AU AHMAD, I AF AHMAD, I TI ORBITAL DEPENDENCE OF OCTUPOLE DEFORMATION IN HEAVY-NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 49 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400049 ER PT J AU HAUSTEIN, PE AF HAUSTEIN, PE TI MASS MODELS MEET MASS MEASUREMENTS - AN EVALUATION OF THE PREDICTIVE PROPERTIES OF PRESENT-DAY ATOMIC MASS MODELS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 51 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400051 ER PT J AU ANDREWS, MA GOULD, GL KLAEREN, SA AF ANDREWS, MA GOULD, GL KLAEREN, SA TI DEVELOPING A FUNDAMENTAL BASIS FOR METAL-CATALYZED BIOMASS CONVERSION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 52 EP CARB PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300575 ER PT J AU HAIR, LM PITZ, WJ DROEGE, MW WESTBROOK, CK AF HAIR, LM PITZ, WJ DROEGE, MW WESTBROOK, CK TI MODELING OF CATALYTIC OXIDATIVE COUPLING OF METHANE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 52 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301602 ER PT J AU GUIOCHON, G AF GUIOCHON, G TI COMPARISON BETWEEN EXPERIMENTAL AND CALCULATED BAND PROFILES IN CHROMATOGRAPHY AT HIGH-CONCENTRATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 54 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301806 ER PT J AU MALLINSON, RL BRAUN, RL WESTBROOK, CK BURNHAM, AK AF MALLINSON, RL BRAUN, RL WESTBROOK, CK BURNHAM, AK TI EFFECT OF PRESSURE ON HYDROCARBON CRACKING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV OKLAHOMA,NORMAN,OK 73019. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 54 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301716 ER PT J AU BERTSCH, PM LAYTON, WJ HERBERT, B AF BERTSCH, PM LAYTON, WJ HERBERT, B TI CHEMICAL SPECIATION AND DYNAMICS OF ALUMINUM ON MODEL AND MINERAL EXCHANGERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,DIV BIOGEOCHEM,AIKEN,SC 29802. UNIV KENTUCKY,CTR MRIS,LEXINGTON,KY 40506. UNIV CALIF RIVERSIDE,DEPT SOIL & ENVIRONM SCI,RIVERSIDE,CA 92521. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 55 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301076 ER PT J AU BURNHAM, AK REYNOLDS, JG BRAUN, RL AF BURNHAM, AK REYNOLDS, JG BRAUN, RL TI GENERATION OF GAS FROM RESIDUAL KEROGEN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 55 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301717 ER PT J AU BELL, JLS PALMER, DA DRUMMOND, SE BARNES, HL AF BELL, JLS PALMER, DA DRUMMOND, SE BARNES, HL TI THE KINETICS OF HETEROGENEOUSLY-CATALYZED, THERMAL-DECOMPOSITION OF ACETATE IN AQUEOUS-SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. PENN STATE UNIV,DEPT GEOL,UNIVERSITY PK,PA 16802. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 56 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301718 ER PT J AU JUDKINS, RR FULKERSON, W SANGHVI, MK AF JUDKINS, RR FULKERSON, W SANGHVI, MK TI THE DILEMMA OF FOSSIL-FUEL USE AND GLOBAL CLIMATE CHANGE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. AMOCO CORP,CHICAGO,IL 60680. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 56 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301606 ER PT J AU BLENCOE, JG AF BLENCOE, JG TI A VIBRATING-TUBE TECHNIQUE FOR MEASURING THE P-V-T PROPERTIES OF C-O-H FLUIDS AT ELEVATED PRESSURES AND TEMPERATURES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM ENGN,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 57 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301719 ER PT J AU WOUTERS, JM VIEIRA, DJ BUTLER, GW TU, XL ZHOU, XG SEIFERT, HL ZHOU, ZY AF WOUTERS, JM VIEIRA, DJ BUTLER, GW TU, XL ZHOU, XG SEIFERT, HL ZHOU, ZY TI SCALING THE MASS SURFACE (MASS MEASUREMENTS OF EXOTIC NEUTRON-RICH NUCLEI) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544. UTAH STATE UNIV,LOGAN,UT 84322. UNIV GIESSEN,W-6300 GIESSEN,GERMANY. NANJING UNIV,NANJING,PEOPLES R CHINA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 57 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400057 ER PT J AU MILLER, CL AF MILLER, CL TI THE CLEAN COAL INITIATIVE - AN APPROPRIATE RESPONSE TO COMPLEX ENVIRONMENTAL-ISSUES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,WASHINGTON,DC. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 58 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301608 ER PT J AU PEDEN, CHF AF PEDEN, CHF TI COMPARATIVE-STUDIES OF CARBON-MONOXIDE OXIDATION ON MODEL SINGLE-CRYSTAL CATALYSTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 58 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301079 ER PT J AU MORONI, EC AF MORONI, EC TI DIRECT LIQUEFACTION - WHERE WE STAND AND WHERE ARE WE SUPPOSED TO GO - AN OVERVIEW SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,FOSSIL ENERGY OFF COAL CONVERS,WASHINGTON,DC 20545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 61 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301611 ER PT J AU NOVAKOV, T PENNER, JE EDDLEMAN, H AF NOVAKOV, T PENNER, JE EDDLEMAN, H TI GLOBAL BLACK CARBON EMISSIONS FROM FOSSIL-FUEL COMBUSTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV ATMOSPHER & GEOPHYS SCI,LIVERMORE,CA 94550. RI Penner, Joyce/J-1719-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 63 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400063 ER PT J AU SEPANIAK, MJ BOWYER, JR VODINH, T AF SEPANIAK, MJ BOWYER, JR VODINH, T TI CHARACTERIZATION OF A REGENERABLE FIBER OPTIC BIOSENSOR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 64 EP AGRO PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300143 ER PT J AU GLISH, GL MCLUCKEY, SA VANBERKEL, GJ AF GLISH, GL MCLUCKEY, SA VANBERKEL, GJ TI EXTENDING THE MS/MS EXPERIMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 66 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300264 ER PT J AU ANGEL, SM LANGRY, K COLSTON, BW BROWN, S DALEY, PF MILANOVICH, FP AF ANGEL, SM LANGRY, K COLSTON, BW BROWN, S DALEY, PF MILANOVICH, FP TI FIBER OPTIC SENSOR FOR THE CONTINUOUS MONITORING OF CHLORINATED HYDROCARBONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV WASHINGTON,CPAC,SEATTLE,WA 98195. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 67 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301450 ER PT J AU CHATTERJEE, K STOCK, LM AF CHATTERJEE, K STOCK, LM TI SOLUBILIZATION OF HIGH RANK, POCAHONTAS NO-3 COAL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 67 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301617 ER PT J AU SEARS, TJ NORTHRUP, FJ FAWZY, WM AF SEARS, TJ NORTHRUP, FJ FAWZY, WM TI HIGH-RESOLUTION SPECTROSCOPY OF CHEMICAL INTERMEDIATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. RI Sears, Trevor/B-5990-2013 OI Sears, Trevor/0000-0002-5559-0154 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 67 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400572 ER PT J AU GARRETT, JD AF GARRETT, JD TI OBSERVABLE NUCLEAR-PHASE TRANSITIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 68 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400068 ER PT J AU STELLPFLUG, A NICHOLAS, JB CARRADO, KA KELDSEN, G WINANS, RE AF STELLPFLUG, A NICHOLAS, JB CARRADO, KA KELDSEN, G WINANS, RE TI DEVELOPMENT OF A MOLECULAR MECHANICS FORCE-FIELD FOR CLAYS .1. STRUCTURE AND IR-SPECTRA OF KAOLINITE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 68 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301618 ER PT J AU VODINH, T GRIFFIN, GD SEPANIAK, MJ ALARIE, JP AF VODINH, T GRIFFIN, GD SEPANIAK, MJ ALARIE, JP TI DEVELOPMENT OF FIBEROPTIC FLUOROIMMUNOSENSOR FOR CHEMICAL AND BIOLOGICAL ANALYSIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,HLTH & SAFETY RES DIV,DIV ADV MONITORING DEV GRP,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 68 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301451 ER PT J AU CARLSON, GA AF CARLSON, GA TI MOLECULAR MODELING STUDIES OF BITUMINOUS COAL STRUCTURE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DIV 6211,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 69 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301619 ER PT J AU STEPHENS, FS AF STEPHENS, FS TI IDENTICAL BANDS IN SUPERDEFORMED NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 69 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400069 ER PT J AU YEUNG, ES AF YEUNG, ES TI SPATIAL AND TEMPORAL DISTRIBUTIONS OF SPECIES FORMED FROM SURFACES BY LASER VAPORIZATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 69 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300267 ER PT J AU BENGTSSON, BR AF BENGTSSON, BR TI SHAPE COEXISTENCE IN THE MASS A=130 REGION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE ASSOCIATED UNIV,UNISOR,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 70 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400070 ER PT J AU GOLSHANSHIRAZI, S GUIOCHON, G AF GOLSHANSHIRAZI, S GUIOCHON, G TI COMPARISON OF THE KINETIC-MODELS FOR PREPARATIVE CHROMATOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 70 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301821 ER PT J AU LITTLEJOHN, D CHANG, SG EVETTS, SW MARGERUM, DW AF LITTLEJOHN, D CHANG, SG EVETTS, SW MARGERUM, DW TI REACTIONS OF AQUEOUS OZONE WITH OXYANIONS OF SULFUR AND NITROGEN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 70 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301965 ER PT J AU HENRY, EA AF HENRY, EA TI RECENT RESULTS ON SUPERDEFORMATION IN THE HG-TL-PB REGION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 71 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400071 ER PT J AU CHBIHI, A NICOLIS, NG SOBOTKA, LG SARANTITES, DG MAJKA, Z STRACENER, DW HENSLEY, DC BEENE, JR HALBERT, ML AF CHBIHI, A NICOLIS, NG SOBOTKA, LG SARANTITES, DG MAJKA, Z STRACENER, DW HENSLEY, DC BEENE, JR HALBERT, ML TI THE NUCLEAR-LEVEL DENSITY OF HOT NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WASHINGTON UNIV,ST LOUIS,MO 63130. OAK RIDGE NATL LAB,OAK RIDGE,TN 37830. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 72 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400072 ER PT J AU CHIARIZIA, R HORWITZ, EP HODGSON, KM AF CHIARIZIA, R HORWITZ, EP HODGSON, KM TI APPLICATION OF SUPPORTED LIQUID MEMBRANES FOR REMOVAL OF CONTAMINANTS FROM GROUNDWATER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. WESTINGHOUSE HANFORD CO,RICHLAND,WA 99352. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 73 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301824 ER PT J AU AUTREY, T GLEICHER, GJ CAMAIONI, DM FRANZ, JA AF AUTREY, T GLEICHER, GJ CAMAIONI, DM FRANZ, JA TI A THEORETICAL AND EXPERIMENTAL-STUDY OF UNIMOLECULAR AND BIMOLECULAR RADICAL HYDROGEN TRANSFER-REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 78 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301628 ER PT J AU MCHARRIS, WC OLIVIER, WA RIOS, A HAMPTON, C CHOU, WT ARYAEINEJAD, R AF MCHARRIS, WC OLIVIER, WA RIOS, A HAMPTON, C CHOU, WT ARYAEINEJAD, R TI HIGHLY-DISTORTED AND DOUBLY-DECOUPLED ROTATIONAL BANDS IN ODD-ODD NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MICHIGAN STATE UNIV,E LANSING,MI 48824. EG&G IDAHO INC,IDAHO FALLS,ID 83401. BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 80 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400079 ER PT J AU DOSE, EV GUIOCHON, G AF DOSE, EV GUIOCHON, G TI USE OF INTERNAL STANDARDS IN CAPILLARY ELECTROPHORESIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 82 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301833 ER PT J AU LIANG, LY MCCARTHY, JF AF LIANG, LY MCCARTHY, JF TI IRON DYNAMICS DURING INJECTION OF DISSOLVED ORGANIC-CARBON IN A SANDY AQUIFER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. CLEMSON UNIV,CLEMSON,SC 29631. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 82 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301465 ER PT J AU BUSS, RJ HO, P BREILAND, WG AF BUSS, RJ HO, P BREILAND, WG TI SURFACE-REACTIONS OF SIH, SIH4 AND SI2H6 STUDIED USING MOLECULAR-BEAM TECHNIQUES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 83 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400588 ER PT J AU KIDD, KB PEDEN, CHF SHINN, ND AF KIDD, KB PEDEN, CHF SHINN, ND TI THIN METAL OVERLAYERS ON W(110) AND OXIDIZED W(110) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. UNIV NEW MEXICO,DEPT CHEM & NUCL ENGN,ALBUQUERQUE,NM 87131. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 83 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301104 ER PT J AU HARDCASTLE, FD PEDEN, CHF AF HARDCASTLE, FD PEDEN, CHF TI THE MOLECULAR-STRUCTURES OF HYDROUS SODIUM TITANATES BY RAMAN-SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 2 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 84 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301105 ER PT J AU LEE, YT AF LEE, YT TI INFRARED-ABSORPTION SPECTROSCOPY OF SOLVATED IONS IN THE GAS-PHASE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 85 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400590 ER PT J AU ASSINK, RA ARNOLD, C AF ASSINK, RA ARNOLD, C TI COMPOSITE MEMBRANES FOR FLOW BATTERIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 86 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301837 ER PT J AU OKAJIMA, S REED, DT AF OKAJIMA, S REED, DT TI APPLICATION OF PHOTOACOUSTIC-SPECTROSCOPY TO THE DETECTION OF URANYL (UO22+) IN AQUEOUS SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 86 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400084 ER PT J AU TURNER, RR WILLETT, KL AF TURNER, RR WILLETT, KL TI CHEMICAL FORM OF MERCURY IN CONTAMINATED SOIL AFFECTS PERFORMANCE ON LEACHING TESTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37830. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 88 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400086 ER PT J AU NITSCHKE, JM AF NITSCHKE, JM TI THE ISOSPIN LABORATORY INITIATIVE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 90 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400088 ER PT J AU EVANS, RJ AGBLEVOR, FA CHUM, HL WOOTEN, JB CHADICK, DB BALDWIN, SD AF EVANS, RJ AGBLEVOR, FA CHUM, HL WOOTEN, JB CHADICK, DB BALDWIN, SD TI NEW APPROACHES TO THE STUDY OF CELLULOSE PYROLYSIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,CHEM CONSERVAT RES BRANCH,GOLDEN,CO 80401. PHILIP MORRIS CO,RES CTR,RICHMOND,VA 23261. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 92 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301642 ER PT J AU TALBERT, WL WOUTERS, JM VIEIRA, DJ AF TALBERT, WL WOUTERS, JM VIEIRA, DJ TI THIN-TARGET PRODUCTION OF EXOTIC BEAMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 92 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400090 ER PT J AU DAVIDS, CN AF DAVIDS, CN TI THE FRAGMENT MASS ANALYZER AT ATLAS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 94 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400092 ER PT J AU GILL, RL AF GILL, RL TI THE MEASUREMENT OF PICOSECOND LIFETIMES IN NEUTRON RICH NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 95 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400093 ER PT J AU HATSUKAWA, Y NAKAHARA, H HOFFMAN, DC AF HATSUKAWA, Y NAKAHARA, H HOFFMAN, DC TI ALPHA-DECAY SYSTEMATICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 JAPAN ATOM ENERGY RES INST,DEPT RADIOISOTOPES,TOKAI,IBARAKI 31911,JAPAN. TOKYO METROPOLITAN UNIV,DEPT CHEM,TOKYO 158,JAPAN. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 96 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400094 ER PT J AU HAIRE, RG HEATHMAN, S BENEDICT, U AF HAIRE, RG HEATHMAN, S BENEDICT, U TI THE STRUCTURAL BEHAVIOR OF SELECTED F-ELEMENT METALS AND ALLOYS UNDER PRESSURE - SIGNIFICANCE TO THE SYSTEMATICS OF F-ELECTRON DELOCALIZATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. INST TRANSURANIUM ELEMENTS,CEC JRC,KARLSRUHE,GERMANY. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 97 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400095 ER PT J AU PINES, A AF PINES, A TI NMR DEVELOPMENTS OF POSSIBLE RELEVANCE TO SURFACES AND CATALYSTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 98 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300296 ER PT J AU ALNAJJAR, MS FRANZ, JA AF ALNAJJAR, MS FRANZ, JA TI RETROGRESSIVE ARYL-ALKYL BOND FORMING REACTIONS FACILITATED BY REACTIONS OF SULFUR-CENTERED FREE-RADICALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 100 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301650 ER PT J AU DAVIDSON, DJ ENSOR, DD COLLINS, J PRUETT, DJ AF DAVIDSON, DJ ENSOR, DD COLLINS, J PRUETT, DJ TI ABSORPTION STUDIES USING HYDROUS TITANIUM-OXIDE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 TENNESSEE TECHNOL UNIV,DEPT CHEM,COOKEVILLE,TN 38505. OAK RIDGE NATL LAB,DIV CHEM TECHNOL,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 100 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301851 ER PT J AU BUCHANAN, MV ILGNER, RH WATSON, AP AF BUCHANAN, MV ILGNER, RH WATSON, AP TI DETERMINATION OF CHEMICAL-AGENT CONTAMINATION IN BUILDING-MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 102 EP AGRO PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300181 ER PT J AU ARMES, SP ALDISSI, M BEERY, JG GOTTESFELD, S AF ARMES, SP ALDISSI, M BEERY, JG GOTTESFELD, S TI SCANNING TUNNELING MICROSCOPY INVESTIGATION OF CONDUCTING POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV SUSSEX,BRIGHTON BN1 9QJ,E SUSSEX,ENGLAND. CHAMPLAIN CABLE CORP,WINOOSKI,VT 05404. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 103 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401269 ER PT J AU SALJOUGHIAN, M MORIMOTO, H WILLIAMS, PG LEE, H AF SALJOUGHIAN, M MORIMOTO, H WILLIAMS, PG LEE, H TI SYNTHESIS OF HIGH SPECIFIC ACTIVITY [1-H-3]-D-GLUCOSE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,NATL TRITIUM LABELING FACIL,BERKELEY,CA 94720. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 103 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400101 ER PT J AU MCLUCKEY, SA GLISH, GL VANBERKEL, GJ AF MCLUCKEY, SA GLISH, GL VANBERKEL, GJ TI MASS-SPECTROMETRY MASS-SPECTROMETRY OF MULTIPLY PROTONATED PEPTIDES AND PROTEINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 107 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300305 ER PT J AU RIEKE, PC TARASEVICH, BJ FRYXELL, GE BENTJEN, SB CAMPBELL, AA AF RIEKE, PC TARASEVICH, BJ FRYXELL, GE BENTJEN, SB CAMPBELL, AA TI BIOMIMETIC THIN-FILM DEPOSITION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 108 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302003 ER PT J AU GRAY, ML LAI, RW AF GRAY, ML LAI, RW TI SURFACE MODIFICATION OF COAL BY METHANOL VAPOR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 109 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301659 ER PT J AU LI, DQ SWANSON, BI AF LI, DQ SWANSON, BI TI SYNTHESIS AND CHARACTERIZATION MIXED-VALENCE SELF-ASSEMBLED MULTILAYER SUPERLATTICES - INORGANIC THIN-FILMS FOR ADVANCED MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 109 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302004 ER PT J AU HEMBERGER, PH NOGAR, NS WILLIAMS, J SYKA, JEP CAMERON, D AF HEMBERGER, PH NOGAR, NS WILLIAMS, J SYKA, JEP CAMERON, D TI ION AND LASER OPTICS WITH AN ION TRAP MASS-SPECTROMETER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MONTANA COLL MINERAL SCI & TECHNOL,DEPT CHEM,BUTTE,MT 59701. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907. FINNIGAN MAT CORP,SAN JOSE,CA 95134. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 110 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300308 ER PT J AU PETERS, RW MONTEMAGNO, CD SHEM, L AF PETERS, RW MONTEMAGNO, CD SHEM, L TI SURFACTANT FLOODING OF DIESEL-CONTAMINATED SOILS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV ENERGY SYST,ARGONNE,IL 60439. NORTHWESTERN UNIV,DEPT CIVIL ENGN,EVANSTON,IL 60208. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 110 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301861 ER PT J AU AUSTIN, LR SCHREIBER, SB AF AUSTIN, LR SCHREIBER, SB TI ATLAS LINE, AN INTEGRATED APPROACH TO WASTE MINIMIZATION VIA ONLINE AT-LINE PROCESS ANALYTICAL-CHEMISTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 111 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301494 ER PT J AU GLISH, GL MCLUCKEY, SA AF GLISH, GL MCLUCKEY, SA TI NEW MASS-SPECTROMETRIC IONIZATION METHODS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 111 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300309 ER PT J AU HUTTER, JC VANDEGRIFT, GF AF HUTTER, JC VANDEGRIFT, GF TI DECONTAMINATION OF GROUNDWATER USING MEMBRANE-ASSISTED SOLVENT-EXTRACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 111 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301862 ER PT J AU GLAND, JL FISCHER, DB AF GLAND, JL FISCHER, DB TI ULTRA-SOFT X-RAY ABSORPTION DETECTED BY FLUORESCENCE YIELD - AN INSITU METHOD FOR CHARACTERIZING ADSORBATES AND SURFACE-REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109. BROOKHAVEN NATL LAB,EXXON PRT,SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 115 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301135 ER PT J AU TOUPADAKIS, AI KUBAS, GJ BURNS, CJ AF TOUPADAKIS, AI KUBAS, GJ BURNS, CJ TI COORDINATION OF SULFUR-DIOXIDE AND ITS OXYGEN-TRANSFER CHEMISTRY ON THE BRIDGING ETA-1-S2 LIGAND OF CP-STAR-2CR2S5 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 118 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302013 ER PT J AU PETERS, RW CADENA, F AF PETERS, RW CADENA, F TI USE OF CHELATING-AGENTS FOR REMEDIATION OF HEAVY-METAL CONTAMINATED SOIL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV ENERGY SYST,ARGONNE,IL 60439. NEW MEXICO STATE UNIV,DEPT CIVIL ENGN,LAS CRUCES,NM 88003. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 119 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301870 ER PT J AU REIMER, JA ARMSTRONG, P BELL, A GRIFFITHS, J WENT, M AF REIMER, JA ARMSTRONG, P BELL, A GRIFFITHS, J WENT, M TI NMR-STUDIES OF MOLECULES ADSORBED ON CATALYTIC SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 123 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300321 ER PT J AU SICHAK, S AF SICHAK, S TI THE MOST COMMON OSHA VIOLATIONS IN THE INDUSTRIAL-SETTING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 123 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300803 ER PT J AU CLARK, DL WATKIN, JG AF CLARK, DL WATKIN, JG TI SYNTHESIS, CHARACTERIZATION, AND REACTIVITY OF THORIUM ALKOXIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,NUCL & RADIOCHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 126 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302021 ER PT J AU HOFFMANN, FM WILLIAMS, GP HIRSCHMUGL, CJ CHABAL, YJ AF HOFFMANN, FM WILLIAMS, GP HIRSCHMUGL, CJ CHABAL, YJ TI SYNCHROTRON RADIATION IN THE FAR-INFRARED - ADSORBATE-SUBSTRATE VIBRATIONS AND RESONANT INTERACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EXXON RES & ENGN CO,ANNANDALE,NJ 08801. BROOKHAVEN NATL LAB,UPTON,NY 11973. AT&T BELL LABS,MURRAY HILL,NJ 07974. RI Chabal, Yves/A-5998-2011 OI Chabal, Yves/0000-0002-6435-0347 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 129 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301147 ER PT J AU BARTELS, DM HAN, P PERCIVAL, P AF BARTELS, DM HAN, P PERCIVAL, P TI H AND D ATOM DIFFUSION IN ICE ABOVE 140-DEGREES-K SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 132 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400637 ER PT J AU ANDREWS, MA GOULD, GL AF ANDREWS, MA GOULD, GL TI REACTIVITY OF PLATINUM ALKOXIDES - GLYCOL HYDROCRACKING AND GENERATION OF A PLATINUM OXO INTERMEDIATE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 133 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302028 ER PT J AU WILCOXON, JP AF WILCOXON, JP TI PHASE-BEHAVIOR AND INTERACTIONS IN INVERSE MICELLES AND MICROEMULSIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ORG 1153,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 134 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301152 ER PT J AU SANDHU, SS NEWMAN, MC AF SANDHU, SS NEWMAN, MC TI TRACE-ELEMENT DISTRIBUTION IN VARIOUS PHASES OF AQUATIC SYSTEMS OF SAVANNAH RIVER SITE (SRS) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CLALFIN COLL,ORANGEBURG,SC 29115. UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,AIKEN,SC 29801. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 137 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301885 ER PT J AU JACOBSON, S GOLSHANSHIRAZI, S GUIOCHON, G AF JACOBSON, S GOLSHANSHIRAZI, S GUIOCHON, G TI AN EXPERIMENTAL AND THEORETICAL-STUDY OF ENANTIOMERS ON CHIRAL STATIONARY PHASES AT HIGH-CONCENTRATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 142 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300340 ER PT J AU OGILBY, PR KRISTIANSEN, M DILLON, MP TAYLOR, VL CLOUGH, RL AF OGILBY, PR KRISTIANSEN, M DILLON, MP TAYLOR, VL CLOUGH, RL TI POLYMER CHARACTERIZATION USING THE TIME-RESOLVED PHOSPHORESCENCE OF SINGLET OXYGEN AS A SPECTROSCOPIC PROBE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 142 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401308 ER PT J AU JOHNSON, SG MILLER, CM FEAREY, BL AF JOHNSON, SG MILLER, CM FEAREY, BL TI RESONANCE IONIZATION MASS-SPECTROMETRIC ANALYSIS OF THORIUM BY EXTERNAL LASER CAVITY ENHANCEMENT TECHNIQUES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,ISOTOPE GEOCHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 146 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300344 ER PT J AU HUCKETT, SC BURNS, CJ CLARK, DL FRANKCOM, T SWANSON, BI AF HUCKETT, SC BURNS, CJ CLARK, DL FRANKCOM, T SWANSON, BI TI SYNTHESIS AND PROPERTIES OF NOVEL LOW-DIMENSIONAL [RU2(O2CR)4.L]X MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 148 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302043 ER PT J AU SKOTHEIM, TA LEE, HS YANG, XQ SIMON, MN WALL, JS OKAMOTO, Y AF SKOTHEIM, TA LEE, HS YANG, XQ SIMON, MN WALL, JS OKAMOTO, Y TI DERIVATIZED POLYPYRROLE LANGMUIR-BLODGETT-FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973. POLYTECH INST NEW YORK,DEPT CHEM,BROOKLYN,NY 11201. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 151 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401317 ER PT J AU RODGERS, MO ANEJA, VP NEWMAN, L ROBERTS, J PARRISH, D FEHSENFELD, F TRAINER, M AF RODGERS, MO ANEJA, VP NEWMAN, L ROBERTS, J PARRISH, D FEHSENFELD, F TRAINER, M TI 1990 SERON PILOT PROGRAM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 N CAROLINA STATE UNIV,DEPT MARINE EARTH & ATMOSPHER SCI,RALEIGH,NC 27695. BROOKHAVEN NATL LAB,UPTON,NY 11973. NOAA,ENVIRONM RES LAB,AERON LAB,BOULDER,CO 80303. RI Trainer, Michael/H-5168-2013; Fehsenfeld, Frederick/I-4876-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 164 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301546 ER PT J AU HARWOOD, JS GARNIER, DG CHINGAS, GC AF HARWOOD, JS GARNIER, DG CHINGAS, GC TI NEW NMR EXPERIMENTS FOR INVESTIGATING MOTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 168 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400673 ER PT J AU SKOTHEIM, TA HALE, PD LEE, HS KARAN, HI OKAMOTO, Y SAMUELSON, L TRIPATHY, S AF SKOTHEIM, TA HALE, PD LEE, HS KARAN, HI OKAMOTO, Y SAMUELSON, L TRIPATHY, S TI GLUCOSE SENSOR BASED ON DERIVATIZED POLYPYRROLE LANGMUIR-BLODGETT-FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MOLTECH CORP,STONY BROOK,NY 11794. BROOKHAVEN NATL LAB,UPTON,NY 11973. CUNY MEDGAR EVERS COLL,BROOKLYN,NY 11225. POLYTECH INST NEW YORK,BROOKLYN,NY 11201. UNIV LOWELL,LOWELL,MA 01854. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 168 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401334 ER PT J AU BULLOCK, RM LEMKE, FR SZALDA, DJ AF BULLOCK, RM LEMKE, FR SZALDA, DJ TI RUTHENIUM ZIRCONIUM COMPLEXES WITH C2-BRIDGES OF BOND ORDERS ONE, 2 AND 3 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 169 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302064 ER PT J AU DUGGER, MT PEEBLES, DE POPE, LE AF DUGGER, MT PEEBLES, DE POPE, LE TI SPECTROSCOPIC EVALUATION OF THE ROLE OF COUNTERFACE MATERIAL AND AMBIENT ON THE TRIBOLOGICAL PERFORMANCE OF DIAMOND FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DIV 1832,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,DIV 7471,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,DIV 1834,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 170 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301188 ER PT J AU HE, Y MELIUS, CF AF HE, Y MELIUS, CF TI THEORETICAL INTERPRETATION OF THE SELF-REACTION OF HNO SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EMORY UNIV,DEPT CHEM,ATLANTA,GA 30322. SANDIA NATL LABS,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 170 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400675 ER PT J AU KOBER, EM RITCHIE, JP AF KOBER, EM RITCHIE, JP TI VIBRATIONAL ANALYSIS OF CRYSTALLINE 3-NITRO-1,2,4-TRIAZOL-5-ONE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 174 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400679 ER PT J AU SILKS, LA JIE, P ODOM, JD DUNLAP, RB AF SILKS, LA JIE, P ODOM, JD DUNLAP, RB TI THE USE OF SELONES FOR THE DETECTION, QUANTITATION, AND ABSOLUTE CONFIGURATIONAL ASSIGNMENT VIA SE-77 NUCLEAR-MAGNETIC-RESONANCE AND CIRCULAR-DICHROISM SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV S CAROLINA,DEPT CHEM,COLUMBIA,SC 29208. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 176 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400278 ER PT J AU LI, CY CHEN, P STUTZIN, GC YOUNG, AT LEUNG, KN KUNKEL, WB AF LI, CY CHEN, P STUTZIN, GC YOUNG, AT LEUNG, KN KUNKEL, WB TI LASER DIAGNOSTICS OF THE CHEMICAL-KINETICS OF H- ION FORMATION IN A LOW-PRESSURE ELECTRIC-DISCHARGE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RI Chen, Pin/B-1112-2008 OI Chen, Pin/0000-0003-1195-9666 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 177 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400682 ER PT J AU CARRADO, KA WINANS, RE KELDSEN, G STELLPFLUG, AG GRUTKOSKI, PS PANDYA, K AF CARRADO, KA WINANS, RE KELDSEN, G STELLPFLUG, AG GRUTKOSKI, PS PANDYA, K TI CHARACTERIZATION OF SYNTHETIC PORPHYRIN-CONTAINING CLAYS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PURDUE N CENT,WESTVILLE,IN 46391. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NO ILLINOIS UNIV,DE KALB,IL 60115. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 178 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302073 ER PT J AU LIU, X LIN, MC MELIUS, CF AF LIU, X LIN, MC MELIUS, CF TI EVIDENCE FOR OCCURRENCE OF THE DIRECT BIMOLECULAR PROCESS 2HNCO-]CO2 + HNCNH AT MEDIUM TEMPERATURES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EMORY UNIV,DEPT CHEM,ATLANTA,GA 30322. SANDIA NATL LABS,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 182 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400687 ER PT J AU LYMAN, JL GOSNELL, TR TAYLOR, AJ KYRALA, GA AF LYMAN, JL GOSNELL, TR TAYLOR, AJ KYRALA, GA TI SUBPICOSECOND LASER IONIZATION OF A HOMOLOGOUS SERIES OF POLYATOMIC-MOLECULES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 183 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400688 ER PT J AU MAJUMDER, SA SHELNUTT, JA PRAIRIE, M ONDRIAS, MR AF MAJUMDER, SA SHELNUTT, JA PRAIRIE, M ONDRIAS, MR TI ENHANCEMENT OF SOLAR PHOTOCATALYTIC DETOXIFICATION BY ADSORPTION OF PORPHYRINS ONTO TIO2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. SANDIA NATL LABS,DIV FUEL SCI,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,DIV SOLAR THERMAL COLLECTOR TECHNOL,ALBUQUERQUE,NM 87185. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 184 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400689 ER PT J AU HALE, PD BOGUSLAVSKY, LI SKOTHEIM, TA KARAN, HI LEE, HS LAN, HL OKAMOTO, Y AF HALE, PD BOGUSLAVSKY, LI SKOTHEIM, TA KARAN, HI LEE, HS LAN, HL OKAMOTO, Y TI GLUCOSE BIOSENSORS BASED ON ELECTRICAL COMMUNICATION BETWEEN GLUCOSE-OXIDASE AND FLEXIBLE REDOX POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 POLYTECH INST NEW YORK,BROOKLYN,NY 11201. MOLTECH CORP,STONY BROOK,NY 11794. CUNY MEDGAR EVERS COLL,BROOKLYN,NY 11225. BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 185 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401351 ER PT J AU HALE, PD BOGUSLAVSKY, LI SKOTHEIM, TA KARAN, HI LEE, HS OKAMOTO, Y AF HALE, PD BOGUSLAVSKY, LI SKOTHEIM, TA KARAN, HI LEE, HS OKAMOTO, Y TI NOVEL BIOSENSORS FOR SPECIFIC NEUROTRANSMITTERS BASED ON FLAVOENZYMES AND FLEXIBLE REDOX POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MOLTECH CORP,STONY BROOK,NY 11794. CUNY MEDGAR EVERS COLL,BROOKLYN,NY 11225. BROOKHAVEN NATL LAB,UPTON,NY 11973. POLYTECH INST NEW YORK,BROOKLYN,NY 11201. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 186 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401352 ER PT J AU STEPHENS, JW STEVENS, CG AF STEPHENS, JW STEVENS, CG TI SHOCK-WAVE DESORPTION FOR TRACE ANALYSIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 187 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300385 ER PT J AU HORWITZ, EP GATRONE, RC AF HORWITZ, EP GATRONE, RC TI THE DESIGN OF CARBAMOYLPHOSPHORYL COMPOUNDS FOR THE EXTRACTION AND RECOVERY OF TRANSURANIC ELEMENTS FROM ACIDIC WASTE SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 190 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302085 ER PT J AU SACHLEBEN, RA MOYER, BA BURNS, JH MCDOWELL, WJ CASE, GN CASE, FI BRYAN, SA LUMETTA, GJ AF SACHLEBEN, RA MOYER, BA BURNS, JH MCDOWELL, WJ CASE, GN CASE, FI BRYAN, SA LUMETTA, GJ TI MACROCYCLE-MEDIATED CATION SEPARATIONS IN SOLVENT-EXTRACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 191 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302086 ER PT J AU ROLES, JL GUIOCHON, G AF ROLES, JL GUIOCHON, G TI CHARACTERIZATION OF ALUMINUM-OXIDES USED IN CERAMIC PROCESSING BY INVERSE CHROMATOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 203 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300401 ER PT J AU RUSCIC, B BERKOWITZ, J AF RUSCIC, B BERKOWITZ, J TI PHOTOIONIZATION MASS-SPECTROMETRIC STUDY OF THE TRANSIENT SPECIES SI2HN(N = 2-5) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RI Ruscic, Branko/A-8716-2008 OI Ruscic, Branko/0000-0002-4372-6990 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 203 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400708 ER PT J AU RUSCIC, B BERKOWITZ, J AF RUSCIC, B BERKOWITZ, J TI PHOTOIONIZATION MASS-SPECTROMETRIC STUDY OF SI2H6 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 204 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400709 ER PT J AU BOZELL, JJ HAMES, BR CHUM, HL AF BOZELL, JJ HAMES, BR CHUM, HL TI METAL-CATALYZED OXIDATION OF PARA-SUBSTITUTED PHENOLICS - APPROACHES TO BENZOQUINONES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SOLAR ENERGY RES INST,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 206 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400308 ER PT J AU SIGMAN, ME ZINGG, SP PAGNI, RM AF SIGMAN, ME ZINGG, SP PAGNI, RM TI PHOTOOXIDATION OF ANTHRACENE IN WATER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 208 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400310 ER PT J AU ELFALLAH, MZ GUIOCHON, G AF ELFALLAH, MZ GUIOCHON, G TI COMPARISON BETWEEN EXPERIMENTAL AND THEORETICAL PROFILES OF A SINGLE SOLUTE IN NONLINEAR GRADIENT LIQUID-CHROMATOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 213 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300411 ER PT J AU MA, ZD GUIOCHON, G AF MA, ZD GUIOCHON, G TI COMPARISON BETWEEN EXPERIMENTAL AND THEORETICAL PROFILES IN NONLINEAR CHROMATOGRAPHY - THE CASE OF VOLUME OVERLOAD WITH THE HODOGRAPH METHOD FOR THE ISOTHERM MEASUREMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 214 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300412 ER PT J AU ZHU, J GUIOCHON, G AF ZHU, J GUIOCHON, G TI PRACTICAL PROBLEMS IN DISPLACEMENT CHROMATOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 215 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300413 ER PT J AU DOGRUEL, SB AF DOGRUEL, SB TI ACS PROJECT SEED AT LOS-ALAMOS-NATIONAL-LABORATORY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,EDUC OUTREACH OFF,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 225 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89300903 ER PT J AU KUBAS, GJ VERGAMINI, PJ BURNS, CJ LARSON, AC JOHNSON, SW AF KUBAS, GJ VERGAMINI, PJ BURNS, CJ LARSON, AC JOHNSON, SW TI THE NEUTRON STRUCTURE OF THE MOLYBDENUM DIHYDROGEN COMPLEX, MO(ETA-2-H2)(CO)[(C6D5)2PC2H4P(C6D5)2]2.4.5C6D6 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP INC4,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 231 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302126 ER PT J AU SPARKS, LD ONDRIAS, MR SHELNUTT, JA MEDFORTH, CJ SENGER, M BERBER, MD SMITH, KM BARKIGIA, KM AF SPARKS, LD ONDRIAS, MR SHELNUTT, JA MEDFORTH, CJ SENGER, M BERBER, MD SMITH, KM BARKIGIA, KM TI MODELS OF NONPLANAR BIOLOGICAL CHROMOPHORES - METAL OCTAALKYL-TETRAPHENYLPORPHYRINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. UNIV CALIF DAVIS,DAVIS,CA 95616. BROOKHAVEN NATL LAB,UPTON,NY 11973. UNIV NEW MEXICO,ALBUQUERQUE,NM 87185. RI Shelnutt, John/A-9987-2009; Smith, Kevin/G-1453-2011 OI Shelnutt, John/0000-0001-7368-582X; Smith, Kevin/0000-0002-6736-4779 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 238 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302133 ER PT J AU MOUNTFORD, HS SPREER, LO CALVIN, M OTVOS, JW AF MOUNTFORD, HS SPREER, LO CALVIN, M OTVOS, JW TI OXIDATION OF A BIMETALLIC IRON COMPLEX WITH A CONJUGATED BRIDGE BETWEEN 2 DIFFERENT MACROCYCLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV PACIFIC,DEPT CHEM,STOCKTON,CA 95211. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 239 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302134 ER PT J AU COLTRIN, ME BREILAND, WG MOFFAT, HK HOUF, WG GRCAR, JF AF COLTRIN, ME BREILAND, WG MOFFAT, HK HOUF, WG GRCAR, JF TI SILICON DEPOSITION MECHANISMS WITH APPLICATIONS TO LOW-PRESSURE CVD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 241 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400746 ER PT J AU GARRITY, ML BROWN, GM SACHLEBEN, RA AF GARRITY, ML BROWN, GM SACHLEBEN, RA TI SYNTHESIS OF BIFUNCTIONAL CHELATING-AGENTS FOR COMPLEXATION OF LANTHANIDE IONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 243 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302138 ER PT J AU SAUER, NN VANDERSLUYS, WG EHLER, DS WATKIN, JG AF SAUER, NN VANDERSLUYS, WG EHLER, DS WATKIN, JG TI OXIDATIVE DISSOLUTION OF URANIUM METAL IN ALCOHOLS TO GIVE URANIUM ALKOXIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV ISOTOPE & NUCL CHEM,LOS ALAMOS,NM 87545. UNIV MONTANA,DEPT CHEM,MISSOULA,MT 59812. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 250 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302145 ER PT J AU VAARTSTRA, BA YUNLU, K HUGGINS, BA ELLIS, PD EDELSTEIN, N HUFFMAN, JC GRADEFF, PS CAULTON, KG AF VAARTSTRA, BA YUNLU, K HUGGINS, BA ELLIS, PD EDELSTEIN, N HUFFMAN, JC GRADEFF, PS CAULTON, KG TI PHOTOCONVERSION OF CE2(OIPR)8(IPROH)2 INTO CE4O(OIPR)13(IPROH) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 RHONE POULENC INC,NEW BRUNSWICK,NJ 08901. INDIANA UNIV,DEPT CHEM,BLOOMINGTON,IN 47405. INDIANA UNIV,CTR MOLEC STRUCT,BLOOMINGTON,IN 47405. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV S CAROLINA,DEPT CHEM,COLUMBIA,SC 29208. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 252 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302147 ER PT J AU ESTRUP, PJ FELTER, TE AF ESTRUP, PJ FELTER, TE TI HYDROGEN ADSORPTION ON MOLYBDENUM AND TUNGSTEN SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROWN UNIV,PROVIDENCE,RI 02912. SANDIA NATL LABS,LIVERMORE,CA 94550. NR 3 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 257 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400762 ER PT J AU FELTER, TE KAY, BD STULEN, RH AF FELTER, TE KAY, BD STULEN, RH TI H/PD(111) - STRUCTURE AND DYNAMICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 258 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400763 ER PT J AU MICHAEL, JV AF MICHAEL, JV TI ISOTOPE EFFECT STUDIES AT HIGH-TEMPERATURES BY THE FLASH PHOTOLYSIS-SHOCK TUBE (FP-ST) TECHNIQUE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RI Michael, Joe/E-3907-2010 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 259 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400764 ER PT J AU WAGNER, AF SHEPARD, R KOURES, AG AF WAGNER, AF SHEPARD, R KOURES, AG TI ISOTOPE EFFECTS IN ADDITION-REACTIONS OF IMPORTANCE IN COMBUSTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 264 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400769 ER PT J AU WAMPLER, WR AF WAMPLER, WR TI STUDIES OF HYDROGEN UPTAKE, RELEASE AND TRAPPING IN METALS USING ION-BEAM ANALYSIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 266 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400771 ER PT J AU DEPRISTO, AE FOURNIER, R STAVE, MS AF DEPRISTO, AE FOURNIER, R STAVE, MS TI H-2 DISSOCIATION, H ADSORPTION AND H ABSORPTION ON METAL-CLUSTERS AND SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 267 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400772 ER PT J AU GIBSON, JK AF GIBSON, JK TI TRANSITION-METAL FLUORIDE AND OXYFLUORIDE VAPOR SPECIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 268 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302163 ER PT J AU SHAMAMIAN, VA KAY, BD AF SHAMAMIAN, VA KAY, BD TI SURFACE KINETICS OF H/D EXCHANGE ON CLEAN AND CO COVERED PD(111) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 268 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400773 ER PT J AU JOHNSON, DC FENG, J CHANG, H HSIAO, YL GORDON, JS LAREW, LA AF JOHNSON, DC FENG, J CHANG, H HSIAO, YL GORDON, JS LAREW, LA TI ELECTROCHEMICAL INCINERATION - THE ACTIVATION OF LEAD DIOXIDE ELECTRODES FOR ANODIC OXYGEN-TRANSFER REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 275 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301293 ER PT J AU BEDNARSKI, MD PENG, W CALLSTROM, MR HILL, T AF BEDNARSKI, MD PENG, W CALLSTROM, MR HILL, T TI THE USE OF CARBOHYDRATE PROTEIN CONJUGATES OF PROTEASES [CPC(PROTEASES)] FOR THE CATALYTIC FORMATION OF PEPTIDE-BONDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. OHIO STATE UNIV,DEPT CHEM,COLUMBUS,OH 43210. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 276 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400378 ER PT J AU CALLSTROM, MR HILL, TG HUSTON, ME WARTCHOW, CA SMITH, MB BEDNARSKI, MD WANG, P OEHLER, LM AF CALLSTROM, MR HILL, TG HUSTON, ME WARTCHOW, CA SMITH, MB BEDNARSKI, MD WANG, P OEHLER, LM TI CARBOHYDRATE PROTEIN CONJUGATES - THE DESIGN OF NEW MATERIALS TO STABILIZE ENZYMES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OHIO STATE UNIV,DEPT CHEM,COLUMBUS,OH 43210. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 277 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400379 ER PT J AU URIBE, F SPRINGER, T GOTTESFELD, S AF URIBE, F SPRINGER, T GOTTESFELD, S TI THE ELECTROREDUCTION OF OXYGEN AT THE PLATINUM IONOMER INTERFACE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 278 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301296 ER PT J AU BANSE, BA CREIGHTON, JR AF BANSE, BA CREIGHTON, JR TI THE REACTION OF TRIETHYLGALLIUM AND TRIMETHYLGALLIUM WITH GAAS(100) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 288 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301305 ER PT J AU MARTIN, JE ADOLF, D AF MARTIN, JE ADOLF, D TI GROWTH AND STRUCTURE IN DILUTE GELLING SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 288 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400793 ER PT J AU ADOLF, D MARTIN, JE AF ADOLF, D MARTIN, JE TI VISCOELASTICITY IN GELLING SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 289 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400794 ER PT J AU ECKERT, J AF ECKERT, J TI HYDRIDE VIBRATIONS IN METALS AND METAL-CLUSTERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 290 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400795 ER PT J AU FRYXELL, GE RIEKE, PC AF FRYXELL, GE RIEKE, PC TI PREPARATION AND SYNTHETIC ELABORATION OF SELF-ASSEMBLED MONOLAYERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, MAT RES SECT, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 297 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400399 ER PT J AU CARMAN, HS KLOTS, CE COMPTON, RN AF CARMAN, HS KLOTS, CE COMPTON, RN TI NEGATIVE-ION FORMATION BY RYDBERG ELECTRON-TRANSFER - ISOTOPE-DEPENDENT RATE CONSTANTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 299 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400804 ER PT J AU SCHULTE, LD MIXON, PL MERCERSMITH, JA LAVALLEE, DK AF SCHULTE, LD MIXON, PL MERCERSMITH, JA LAVALLEE, DK TI A KINETICS STUDY OF THE METALATION OF N-BENZYLTETRAARYLPORPHYRINS COVALENTLY BOUND TO AN ANTIBODY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,NUCL & RADIOCHEM GRP,LOS ALAMOS,NM 87545. CUNY HUNTER COLL,DEPT CHEM,NEW YORK,NY 10021. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 305 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302200 ER PT J AU HARSH, JB SU, C TRAINA, SJ BERTSCH, PM AF HARSH, JB SU, C TRAINA, SJ BERTSCH, PM TI CORRESPONDENCE BETWEEN BULK AND SURFACE-PROPERTIES OF NONCRYSTALLINE ALUMINOSILICATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WASHINGTON STATE UNIV,DEPT AGRON & SOILS,PULLMAN,WA 99164. OHIO STATE UNIV,COLUMBUS,OH 43210. SAVANNAH RIVER ECOL LAB,AIKEN,SC 29801. RI Harsh, James/C-7455-2014 OI Harsh, James/0000-0002-0177-3342 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 321 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89301338 ER PT J AU WORL, LA DONOHOE, RJ HUCKETT, SC SWANSON, BI SAXENA, A BATISTIC, I BISHOP, AR AF WORL, LA DONOHOE, RJ HUCKETT, SC SWANSON, BI SAXENA, A BATISTIC, I BISHOP, AR TI ULTRAGAP EDGE STATES IN MIXED HALIDE CHAIN SOLIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. UNIV CALIF LOS ALAMOS SCI LAB,STAT PHYS & CONDENSED MATTER THEORY GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 335 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302230 ER PT J AU ARRINGTON, CA SWANSON, B HUCKETT, S AF ARRINGTON, CA SWANSON, B HUCKETT, S TI THERMAL DECAY OF PHOTOINDUCED PARAMAGNETIC DEFECTS IN PTBR CHAINS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,GRP INC4,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 336 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302231 ER PT J AU WORL, LA DONOHOE, RJ HUCKETT, SC SWANSON, BI AF WORL, LA DONOHOE, RJ HUCKETT, SC SWANSON, BI TI PHOTOEXCITATION IN MIXED HALIDE CHAIN SOLIDS - EVIDENCE FOR ELECTRON-HOLE PAIR SEPARATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 337 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302232 ER PT J AU DONOHOE, RJ WORL, LA SWANSON, BI AF DONOHOE, RJ WORL, LA SWANSON, BI TI TEMPERATURE-INDUCED INTERCONVERSION OF DEFECTS IN THE QUASI-ONE-DIMENSIONAL CHARGE-DENSITY-WAVE SOLID PTBR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 338 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302233 ER PT J AU LAGASSE, RR WEAGLEY, RJ LESLIE, PK SCHNEIDER, DA AF LAGASSE, RR WEAGLEY, RJ LESLIE, PK SCHNEIDER, DA TI PHENOMENA AFFECTING MORPHOLOGY OF MICROPOROUS POLY-(ACRYLONITRILE) PREPARED VIA PHASE-SEPARATION FROM SOLUTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ORGAN & ELECTR MAT DEPT 1810,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 338 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89401146 ER PT J AU DONOHOE, RJ SWANSON, BI AF DONOHOE, RJ SWANSON, BI TI PRESSURE TUNING OF QUASI-ONE-DIMENSIONAL CHARGE-MATERIALS AND SPIN-DENSITY-WAVE MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 339 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302234 ER PT J AU CARRADO, KA THIYAGARAJAN, P WINANS, RE BOTTO, RE FORMAN, JE AF CARRADO, KA THIYAGARAJAN, P WINANS, RE BOTTO, RE FORMAN, JE TI THE CRYSTALLIZATION OF ORGANIC-CONTAINING LAYER SILICATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 341 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302236 ER PT J AU SCHULTE, LD MERCERSMITH, JA BURNS, TP AF SCHULTE, LD MERCERSMITH, JA BURNS, TP TI THE SYNTHESIS OF UNSYMMETRICAL TETRAARYLPORPHYRINS ON A POLYSTYRENE SUPPORT UNDER MILD CONDITIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,NUCL & RADIOCHEM GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 349 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG894 UT WOS:A1991FG89400450 ER PT J AU KING, RB KING, CM GARBER, AR ADAMS, RD AF KING, RB KING, CM GARBER, AR ADAMS, RD TI AN O-17 NMR-STUDY OF URANYL HYDROLYSIS AND GELATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV GEORGIA,DEPT CHEM,ATHENS,GA 30602. WESTINGHOUSE ELECT CORP,SAVANNAH RIVER LAB,AIKEN,SC 29802. UNIV S CAROLINA,DEPT CHEM,COLUMBIA,SC 29209. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 388 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302283 ER PT J AU STIBRANY, RT GOSHORN, D GEORGE, G CRAMER, S GEORGE, S GORUN, SM AF STIBRANY, RT GOSHORN, D GEORGE, G CRAMER, S GEORGE, S GORUN, SM TI SYNTHESIS, STRUCTURE AND BIOMIMETIC CATALASE ACTIVITY OF TETRADECANUCLEAR AND HEXADECANUCLEAR MANGANESE AGGREGATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EXXON RES & ENGN CO,ANNANDALE,NJ 08801. BROOKHAVEN NATL LAB,UPTON,NY 11973. RI George, Graham/E-3290-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 431 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302326 ER PT J AU BROWN, GM GARRITY, ML KROUPA, ML SACHLEBEN, RA AF BROWN, GM GARRITY, ML KROUPA, ML SACHLEBEN, RA TI ENERGY-TRANSFER FROM NAPHTHALENE TO LANTHANIDE IONS IN COMPLEXES WITH MULTIDENTATE CHELATING-AGENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 447 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302342 ER PT J AU SPREER, LO MOUNTFORD, HS CALVIN, M OTVOS, JW BREWER, KJ RICHTER, M SCOTT, B AF SPREER, LO MOUNTFORD, HS CALVIN, M OTVOS, JW BREWER, KJ RICHTER, M SCOTT, B TI CHARACTERIZATION OF A BIMETALLIC IRON COMPLEX WITH AN INTENSE NEAR-INFRARED ELECTRONIC BAND SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV PACIFIC,DEPT CHEM,STOCKTON,CA 95211. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. WASHINGTON STATE UNIV,DEPT CHEM,PULLMAN,WA 99164. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 451 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302346 ER PT J AU BAKAC, A ESPENSON, JH AF BAKAC, A ESPENSON, JH TI ELECTRON-TRANSFER REACTIVITY OF GROUND AND EXCITED-STATES OF MACROCYCLIC CHROMIUM COMPLEXES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 453 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302348 ER PT J AU SATTELBERGER, AP AF SATTELBERGER, AP TI HIGH OXIDATION-STATE EARLY TRANSITION-METAL BINUCLEAR COMPLEXES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV ISOTOPE & NUCL CHEM,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 464 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302359 ER PT J AU MEASE, RC MEINKEN, GE GESTIN, JF CHATAL, JF STEPLEWSKI, Z SRIVASTAVA, SC AF MEASE, RC MEINKEN, GE GESTIN, JF CHATAL, JF STEPLEWSKI, Z SRIVASTAVA, SC TI SYNTHESIS AND EVALUATION OF CDTA DERIVATIVES - GENERAL CHELATING-AGENTS FOR THE PREPARATION OF RADIOIMMUNOCONJUGATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. UNIV NANTES,F-44035 NANTES,FRANCE. WISTAR INST,PHILADELPHIA,PA 19104. RI GESTIN, Jean-Francois/M-1505-2015 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 496 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302391 ER PT J AU WHEELER, DR MILLER, MM HUFFMAN, JC SATTELBERGER, AP AF WHEELER, DR MILLER, MM HUFFMAN, JC SATTELBERGER, AP TI EVIDENCE FOR A FORMAL ALPHA-ELIMINATION IN AN ACTINIDE COMPLEX - REACTION OF [(ME3SI)2N]2UN(SIME3)SIME2CH2 WITH SUBSTITUTED ANILINES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF LOS ALAMOS SCI LAB,INORGAN & STRUCT CHEM GRP,LOS ALAMOS,NM 87545. INDIANA UNIV,CTR MOLEC STRUCT,BLOOMINGTON,IN 47405. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 506 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302401 ER PT J AU BHADURI, D NELSON, JH DAY, CL JACOBSON, RL AF BHADURI, D NELSON, JH DAY, CL JACOBSON, RL TI IRON PROMOTED DIELS-ALDER [4+2] CYCLOADDITIONS OF VINYLPHOSPHINES WITH PHOSPHOLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV NEVADA,DEPT CHEM,RENO,NV 89557. UNIV WARWICK,COVENTRY CV4 7AL,W MIDLANDS,ENGLAND. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 14 PY 1991 VL 201 BP 510 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA FG893 UT WOS:A1991FG89302405 ER PT J AU KIRBY, SH DURHAM, WB STERN, LA AF KIRBY, SH DURHAM, WB STERN, LA TI MANTLE PHASE-CHANGES AND DEEP-EARTHQUAKE FAULTING IN SUBDUCTING LITHOSPHERE SO SCIENCE LA English DT Review ID OLIVINE-SPINEL TRANSFORMATION; MOMENT TENSOR SOLUTIONS; FOCUS EARTHQUAKES; SYSTEM MG2SIO4-FE2SIO4; DESCENDING LITHOSPHERE; HIGH-PRESSURE; ISLAND ARCS; SLAB PENETRATION; POSTSPINEL TRANSFORMATIONS; GEOPHYSICAL IMPLICATIONS AB Inclined zones of earthquakes are the primary expression of lithosphere subduction. A distinct deep population of subduction-zone earthquakes occurs at depths of 350 to 690 kilometers. At those depths ordinary brittle fracture and frictional sliding, the faulting processes of shallow earthquakes, are not expected. A fresh understanding of these deep earthquakes comes from developments in several areas of experimental and theoretical geophysics, including the discovery and characterization of transformational faulting, a shear instability connected with localized phase transformations under nonhydrostatic stress. These developments support the hypothesis that deep earthquakes represent transformational faulting in a wedge of olivine-rich peridotite that is likely to persist metastably in coldest plate interiors to depths as great as 690 km. Predictions based on this deep structure of mantle phase changes are consistent with the global depth distribution of deep earthquakes, the maximum depths of earthquakes in individual subductions zones, and key source characteristics of deep events. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT EARTH SCI,EXPTL GEOPHYS GRP,LIVERMORE,CA 94550. RP KIRBY, SH (reprint author), US GEOL SURVEY,TECTONOPHYS BRANCH,MAIL STOP 977,345 MIDDLEFIELD RD,MENLO PK,CA 94025, USA. NR 191 TC 269 Z9 278 U1 8 U2 34 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD APR 12 PY 1991 VL 252 IS 5003 BP 216 EP 225 DI 10.1126/science.252.5003.216 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FG036 UT WOS:A1991FG03600034 PM 17769266 ER PT J AU MOORE, EF JANSSENS, RVF AHMAD, I CARPENTER, MP BAXTER, AM BLEICH, ME FERNANDEZ, PB LAURITSEN, T KHOO, TL BEARDEN, IG BENET, P DALY, PJ GARG, U REVIOL, W YE, D AF MOORE, EF JANSSENS, RVF AHMAD, I CARPENTER, MP BAXTER, AM BLEICH, ME FERNANDEZ, PB LAURITSEN, T KHOO, TL BEARDEN, IG BENET, P DALY, PJ GARG, U REVIOL, W YE, D TI K-X-RAY YIELDS ASSOCIATED WITH THE SUPERDEFORMED BAND OF HG-192 SO PHYSICS LETTERS B LA English DT Article ID QUASICONTINUUM; SPECTRUM; DY-152; ENERGY; HO-153; SPIN AB The K X-ray yields associated with the superdeformed band in 192Hg have been measured. The measured value is compared with that expected from the K-conversion of known discrete lines in the band and of transitions following the deexcitation into the yrast states. The difference between these values allows one to set limits on the number and multipolarity of unobserved linking transitions. The possibility of strong E0 decay out of the superdeformed band is ruled out. C1 PURDUE UNIV,W LAFAYETTE,IN 47907. UNIV NOTRE DAME,NOTRE DAME,IN 46556. RP MOORE, EF (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Bearden, Ian/M-4504-2014; Carpenter, Michael/E-4287-2015 OI Bearden, Ian/0000-0003-2784-3094; Carpenter, Michael/0000-0002-3237-5734 NR 19 TC 8 Z9 8 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 APR 11 PY 1991 VL 258 IS 3-4 BP 284 EP 288 DI 10.1016/0370-2693(91)91086-B PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA FJ115 UT WOS:A1991FJ11500009 ER PT J AU DICUS, DA GUNION, JF VEGA, R AF DICUS, DA GUNION, JF VEGA, R TI ISOLATING THE SCATTERING OF LONGITUDINAL W+S AT THE SSC USING LIKE-SIGN DILEPTONS SO PHYSICS LETTERS B LA English DT Article AB We explore the l+l+ mass spectrum from W+W+ scattering at the SSC. We delineate the cut procedures required to suppress transverse polarization and ttBAR-induced backgrounds below the level of the crucial signal due to strong scattering of longitudinally polarized W+'s. C1 UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP DICUS, DA (reprint author), UNIV TEXAS,CTR PARTICLE THEORY,AUSTIN,TX 78712, USA. NR 13 TC 42 Z9 42 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 APR 11 PY 1991 VL 258 IS 3-4 BP 475 EP 481 DI 10.1016/0370-2693(91)91121-B PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA FJ115 UT WOS:A1991FJ11500044 ER PT J AU WHITE, RL BECKER, RH HELFAND, DJ AF WHITE, RL BECKER, RH HELFAND, DJ TI THE INFRARED PROPERTIES OF COMPACT GALACTIC RADIO-SOURCES - THE YOUNG AND THE RESTLESS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, STRUCTURE; INFRARED, SOURCES; NEBULAE, H-II REGIONS; NEBULAE, PLANETARY ID PLANETARY-NEBULAE; STARS; EMISSION; GALAXY AB The IRAS Point Source Catalog has been compared with the 20 cm Galactic plane survey (GPS) of Zoonematkermani et al. We have developed a new technique for distinguishing chance from true coincidences using the bands at which the IRAS sources are detected; for each match, we derive an estimate of the probability that the match represents a true association. Of the 1992 radio sources, 330 have high probability associations, with most having reliabilities above 90%. The GPS/IRAS sources are clearly Galactic: they have a very restricted distribution in both Galactic latitude and longitude. We can identify several classes of objects from their IRAS colors. Most of the sources are ultracompact (UC) H II regions distributed with the amazingly small scale height of only 30 pc. We show that the Wood & Churchwell IRAS-selected sample of UC H II regions is significantly contaminated by objects with a much thicker latitude distribution, which accounts for the larger scale height that they derived. We argue that only the combination of infrared and radio observations can distinguish massive embedded O stars from the more numerous, lower mass embedded B stars. There are 35 known planetary nebulae (PNs) with IRAS detections that lie in our survey area. Only 12 of these nebulae are detected in the GPS; however, practically all of the radio-selected PNs have essentially identical IRAS colors, suggesting that they are in very similar evolutionary states. The other 17 sources with similar colors in our survey are thus likely to be previously unrecognized, highly reddened PNs. C1 UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544. COLUMBIA UNIV,ASTROPHYS LAB,NEW YORK,NY 10027. NR 17 TC 37 Z9 37 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 APR 10 PY 1991 VL 371 IS 1 BP 148 EP 162 DI 10.1086/169879 PN 1 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FE865 UT WOS:A1991FE86500016 ER PT J AU KETO, ER AF KETO, ER TI THE SPECTRAL SIGNATURES OF COLLAPSE AND OUTFLOW AROUND YOUNG STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE INTERSTELLAR, MOLECULES; LINE PROFILES; NEBULAE, H-II REGIONS; NEBULAE, INDIVIDUAL (NGC-7538); NEBULAE, INTERNAL MOTIONS; STARS, PRE-MAIN-SEQUENCE ID H-II REGIONS; MOLECULAR CLOUDS; G10.6-0.4; NGC-7538; AMMONIA; FLOWS; CORE; CS AB Comparison of high angular resolution interferometric and lower resolution single-dish observations of NH3 in molecular cloud cores around ultracompact H II regions suggests that the spectral line shapes observed at lower angular resolution may be used to determine the nature of the interaction between the newly formed stars, represented by the H II region, and the surrounding molecular gas. For example, in this paper we report on new VLA observations of NH3 around NGC 7538-IRS 1. The single-dish observations show that the absorption lines, which arise from gas in front of the H II region, are blueshifted with respect to the emission lines which arise from the surrounding cloud. This is suggestive of the interpretation derived from VLA data which show a complex spatial and velocity structure dominated by outflow of molecular gas. High-velocity red- and blueshifted NH3 implies the acceleration of relatively dense (> 10(4)) molecular gas by a bipolar wind. In observations of another source G10.6-0.4, the single-dish results show redshifted absorption lines implying relative infall. Again this is suggestive of the interpretation derived from VLA data showing mass inflow and gravitational collapse of the cloud core. In further support of this hypothesis we show that the single-dish observations may be reproduced by theoretical spectra computed for models of collapse and outflow. The comparison of the theoretical spectra, computed by solving the radiative transfer equation through a three-dimensional model cloud illustrates the derivation of significant features of the observed spectra from significant features of the model temperature, density, and velocity structure. C1 UNIV CALIF LOS ALAMOS SCI LAB,INST GEOPHYS & PLANETARY PHYS,LOS ALAMOS,NM 87544. RP KETO, ER (reprint author), UNIV ILLINOIS,DEPT ASTRON,1002 W GREEN ST,URBANA,IL 61801, USA. NR 29 TC 7 Z9 7 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 APR 10 PY 1991 VL 371 IS 1 BP 163 EP 170 DI 10.1086/169880 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FE865 UT WOS:A1991FE86500017 ER PT J AU IGLESIAS, CA ROGERS, FJ AF IGLESIAS, CA ROGERS, FJ TI OPACITIES FOR THE SOLAR RADIATIVE INTERIOR SO ASTROPHYSICAL JOURNAL LA English DT Article DE OPACITIES; SUN, INTERIOR ID MODELS; TABLES AB Opacities for the solar radiative interior are computed and compared to previous calculations. A significant enhancement of the Rosseland mean opacity near the bottom of the convention zone is reported when compared to the Los Alamos Astrophysical Opacity Library (LAOL). The discrepancy is attributed mainly to the equation of state. Absorption processes are investigated and their uncertainties estimated. The new results using the OPAL opacity code are given in tabular form for the Ross-Aller, Aller, Grevesse, and Anders-Grevesse solar mixtures. Variations in the opacity due to the different chemical compositions are found to be comparable in size to those between the LAOL and OPAL codes. The plasma conditions in the tables cover the parameter range relevant for standard solar models. RP IGLESIAS, CA (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,L-296,POB 808,LIVERMORE,CA 94550, USA. NR 32 TC 178 Z9 180 U1 0 U2 4 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1991 VL 371 IS 1 BP 408 EP 417 DI 10.1086/169902 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FE865 UT WOS:A1991FE86500039 ER PT J AU SMOOT, GF BENNETT, CL KOGUT, A AYMON, J BACKUS, C DEAMICI, G GALUK, K JACKSON, PD KEEGSTRA, P ROKKE, L TENORIO, L TORRES, S GULKIS, S HAUSER, MG JANSSEN, MA MATHER, JC WEISS, R WILKINSON, DT WRIGHT, EL BOGGESS, NW CHENG, ES KELSALL, T LUBIN, P MEYER, S MOSELEY, SH MURDOCK, TL SHAFER, RA SILVERBERG, RF AF SMOOT, GF BENNETT, CL KOGUT, A AYMON, J BACKUS, C DEAMICI, G GALUK, K JACKSON, PD KEEGSTRA, P ROKKE, L TENORIO, L TORRES, S GULKIS, S HAUSER, MG JANSSEN, MA MATHER, JC WEISS, R WILKINSON, DT WRIGHT, EL BOGGESS, NW CHENG, ES KELSALL, T LUBIN, P MEYER, S MOSELEY, SH MURDOCK, TL SHAFER, RA SILVERBERG, RF TI PRELIMINARY-RESULTS FROM THE COBE DIFFERENTIAL MICROWAVE RADIOMETERS - LARGE ANGULAR SCALE ISOTROPY OF THE COSMIC MICROWAVE BACKGROUND SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC BACKGROUND RADIATION; COSMOLOGY; EARLY UNIVERSE ID RADIATION; ROTATION; ANISOTROPY; UNIVERSE AB The COBE Differential Microwave Radiometers (DMR) instrument has produced preliminary full sky microwave maps at 31.5, 53, and 90 GHz with two independent channels at each frequency. At millimeter wavelengths, the cosmic microwave background (CMB) dominates the sky brightness with an intensity more than a thousand times the foreground Galactic emission. Emission from our Galaxy is seen unambiguously at all three frequencies. The dipole anisotropy, attributed to the motion of our solar system with respect to the CMB reference frame, shows strongly in all six sky maps and is consistent with a Doppler-shifted thermal spectrum. The best fitted dipole has amplitude 3.3 +/- 0.2 mK in the direction (alpha, delta) = (11.2h +/- O.2h,-7-degrees +/- 2-degrees) (J2000) or (l, b) = (265-degrees +/- 2-degrees, 48-degrees +/- 2-degrees). There is no clear evidence in the maps for any other large angular scale features. We place a limit of DELTA-T/T0 < 3 x 10(-5) (T0 = 2.735 K) for the rms quadrupole amplitude; for monochromatic fluctuations DELTA-T/T0 < 4 x 10(-5); and for Gaussian fluctuations DELTA-T/T0 < 4 x 10(-5). All limits are given at the 95% confidence level and reflect currently estimated limits on systematic effects. These measurements place the most severe constraints to date on many potential physical processes in the early universe, such as anisotropic expansion of the universe, very long wavelength gravitational waves, cosmic strings, and large-scale primordial fluctuations. C1 ST SYST INC,LANHAM,MD 20706. UNIV CALIF SANTA BARBARA,DEPT PHYS,GOLETA,CA 93106. GEN RES CORP,DANVERS,MA 01923. UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NASA,GODDARD SPACE FLIGHT CTR,NATL RES COUNCIL,GREENBELT,MD 20771. CALTECH,JET PROP LAB,PASADENA,CA 91109. MIT,DEPT PHYS,CAMBRIDGE,MA 02139. PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544. UNIV CALIF LOS ANGELES,DEPT ASTRON,LOS ANGELES,CA 90024. RP SMOOT, GF (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,MS 50-232,BERKELEY,CA 94720, USA. RI Moseley, Harvey/D-5069-2012; Kogut, Alan/D-6293-2012; Rokke, Laurie/I-5642-2015 OI Rokke, Laurie/0000-0002-5696-7240 NR 25 TC 171 Z9 172 U1 1 U2 4 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1991 VL 371 IS 1 BP L1 EP & DI 10.1086/185988 PN 2 PG 0 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FE867 UT WOS:A1991FE86700001 ER PT J AU GOLDSTEIN, P ARCHULETA, RJ AF GOLDSTEIN, P ARCHULETA, RJ TI DETERMINISTIC FREQUENCY-WAVE-NUMBER METHODS AND DIRECT MEASUREMENTS OF RUPTURE PROPAGATION DURING EARTHQUAKES USING A DENSE ARRAY - DATA-ANALYSIS SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article ID 1979 IMPERIAL-VALLEY; TAIWAN; CALIFORNIA; INVERSION; VELOCITY; MOTION AB Data recorded by the SMART 1 array in Taiwan are used to make the first direct measurements of two-dimensional earthquake rupture propagation. Using frequency-wavenumber techniques and ray theory, we obtain estimates of the spatial extent, duration, and directions of rupture propagation during two earthquakes located offshore Taiwan. Our estimates include uncertainties due to errors in fault plane location and orientation, velocity structure, and slowness (ray parameter) measured at the array. We find that the January 29, 1981, M(L) = 6.3 Taiwan earthquake ruptured unilaterally updip and toward the west on a 60-degrees dipping, 109-degrees striking reverse fault. Using P waves, we find its fault length and duration to be 25 +/- 18 km and 7.4 +/- 3.4 s, respectively. S waves indicate a fault length and duration of 27 +/- 15 km and 9.4 +/- 3.6 s, respectively. We suggest that the November 14, 1986, M(L) = 7.0 Hualien, Taiwan earthquake was triggered by a shallow (h almost-equal-to 14 km) foreshock M(L) = 5.4 which occurred on a subparallel or splay fault approximately 5 s before the mainshock. Based on P waves, rupture propagation during the foreshock is unilateral towards the northeast and slightly downdip on a 58-degrees dipping, 38-degrees striking reverse fault. Its spatial extent and duration are approximately 23 km and 5.4 s. The mainshock initiated at greater depth (h almost-equal-to 34 km) than the foreshock with its primary direction of rupture unilateral toward the northeast and slightly updip on a 57-degrees dipping, 43-degrees striking reverse fault. Using P waves, we found a spatial extent and duration of 68 +/- 15 km and 12.4 +/- 2.2 s. S waves indicate a similar extent, duration, and direction of propagation for the mainshock. However, we found it difficult to distinguish the foreshock and mainshock S waves. We show, by example, that these results represent an improvement over what can be obtained using long-period (T > 5 s) teleseismic methods. Comparison of our results with those obtained using teleseismic data suggests either a short duration slip-time function or that most slip occurs near the rupture front. Our results indicate that much of the complexity in the seismograms recorded during these events, by the SMART 1 array, is due to spatial and temporal variations of the source. This suggests that, at least in some cases, predictions of both the phase and amplitude of strong ground motion, as a function of time, would require a priori knowledge of source properties. Finally, we recommend siting small (almost-equal-to 10 station) dense arrays on land above offshore subduction zones, which are considered seismic gaps, because they can provide more detailed measurements of rupture propagation than is presently possible. C1 UNIV CALIF SANTA BARBARA, DEPT GEOL SCI, SANTA BARBARA, CA 93106 USA. RP UNIV CALIF LAWRENCE LIVERMORE NATL LAB, DIV EARTH SCI, L-202, POB 808, LIVERMORE, CA 94550 USA. NR 33 TC 25 Z9 27 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SOLID PD APR 10 PY 1991 VL 96 IS B4 BP 6187 EP 6198 DI 10.1029/90JB02472 PG 12 WC Geosciences, Multidisciplinary SC Geology GA FG773 UT WOS:A1991FG77300021 ER PT J AU OCONNELL, DRH JOHNSON, LR AF OCONNELL, DRH JOHNSON, LR TI PROGRESSIVE INVERSION FOR HYPOCENTERS AND P-WAVE AND S-WAVE VELOCITY STRUCTURE - APPLICATION TO THE GEYSERS, CALIFORNIA, GEOTHERMAL-FIELD SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article ID INDUCED SEISMICITY; FREE-SURFACE; ROCKS; RESERVOIR; LOCATION; TIMES; AREA AB Seismicity at The Geysers is induced by some aspect of steam production. Accurate earthquake locations, particularly hypocentral depth, are needed to determine the relationship between geothermal energy production and seismicity. Progressive P and S wave velocity-hypocenter inversions were done using data from 39 microearthquakes at The Geysers to estimate microearthquake locations and determine if the geothermal field has a distinctive seismic signature. Comparable final V(p), V(s), and V(p)/V(s) velocity models were obtained from four different starting velocity models. The elevation interval of maximum steam production coincides with minimum observed V(p)/V(s), and V(p)/V(s) increases below the primary production zone, suggesting that reservoir rock becomes more fluid saturated with increasing depth. A V(p)/V(s) peak at the condensation zone-production zone elevation delineates the top of the stream reservoir. Earthquake locations are confined to two depth intervals. A zone of shallow seismicity occurs immediately below the condensation zone and above maximum depths of steam production. A more arealy restricted zone of seismicity is located below maximum production depths and is abruptly terminated at an elevation of -3.7 km. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR COMPUTAT SEISMOL,BERKELEY,CA 94720. NR 40 TC 14 Z9 14 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-SOLID PD APR 10 PY 1991 VL 96 IS B4 BP 6223 EP 6236 DI 10.1029/91JB00154 PG 14 WC Geosciences, Multidisciplinary SC Geology GA FG773 UT WOS:A1991FG77300024 ER PT J AU TAYLOR, SR DENNY, MD AF TAYLOR, SR DENNY, MD TI AN ANALYSIS OF SPECTRAL DIFFERENCES BETWEEN NEVADA TEST SITE AND SHAGAN RIVER NUCLEAR-EXPLOSIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article ID NTS EXPLOSIONS; SEISMIC DATA; DISCRIMINATION; EARTHQUAKES; WAVES; BASIN AB Spectral ratio discrimination studies carried out on events located in the western United States and Soviet Union (S.U.) illustrate that pronounced differences in radiated explosion-source spectra relative to nearby earthquakes exist between the two regions. Nevada Test Site (NTS) explosions are characterized by the existence of more low-frequency and/or less high-frequency energy (greater low- to high-frequency spectral ratios) than western U.S. earthquakes. The opposite pattern is observed in the S.U. with nuclear explosions appearing to have more high-frequency (and/or less low-frequency) energy than earthquakes. These observations may be caused by at least two principal effects that are probably acting in parallel: (1) variations in depth-dependent effects of attenuation acting between the shallow explosions and deeper earthquakes and (2) differences in the dynamic response of the near-source geology to the passing explosion shock wave. Anelastic synthetic seismogram calculations illustrate that depth-dependent attenuation effects may explain the spectral observations. However, a number of observations using near- and far-field data from NTS explosions suggest that near-source effects are the dominant factor. A quasi-empirical explosion source model is proposed that simultaneously fits the spectral ratio data from both the U.S. and S.U. relative to earthquakes in each of the respective regions. Additionally, the model fits the trends of the spectral ratios observed as a function of magnitude. The key to the model is the shape of the pressure time history acting at the elastic radius. For explosions detonated in weak, porous rock, the radiated shock wave divides into a two-wave system consisting of an elastic precursor followed by a plastic wave. The generation of this two-wave system introduces a rise time into the pressure time history. In the frequency domain a second corner frequency is established in a third-order model (with an omega-3 high-frequency decay) whose value is inversely proportional to the time separation of the two waves. In higher-strength, saturated rocks (or for overburied explosions) the effective rise time is short, and a second-order model is appropriate (with an omega-2 high-frequency decay). The second-order model provides a good fit to the S.U. data. In contrast, a hybrid model is required to fit the NTS data with an omega-3 high-frequency decay for shallow explosions detonated in unsaturated tuff that evolves to an omega-2 decay as depth of burials reach higher-strength, saturated rocks below the water table. RP TAYLOR, SR (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT EARTH SCI,LIVERMORE,CA 94550, USA. NR 24 TC 19 Z9 19 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-SOLID PD APR 10 PY 1991 VL 96 IS B4 BP 6237 EP 6245 DI 10.1029/91JB00147 PG 9 WC Geosciences, Multidisciplinary SC Geology GA FG773 UT WOS:A1991FG77300025 ER PT J AU VALENTINE, JW JABLONSKI, D AF VALENTINE, JW JABLONSKI, D TI BIOTIC EFFECTS OF SEA-LEVEL CHANGE - THE PLEISTOCENE TEST SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article ID MASS EXTINCTION; FOSSIL RECORD; FAUNAL DIVERSITY; MODEL; BOUNDARY; PATTERNS; BIOLOGY; EVENTS; CURVES AB Species diversity change, and therefore compositional changes in a biota, may be associated with changes at any of three ecological levels, involving the number of provinces within the biosphere, of communities within provinces, and of species represented within communities. Pleistocene sea level changes did not much affect the marine biosphere at any ecological level. An analysis of an extensive data set of Californian Pleistocene and Recent mollusks indicates a continuity of community and species composition during highstands of the last million years. Extensive latitudinal shifts in species' geographic ranges, associated with climatic change and not with sea level itself, created the most significant biotic changes. Extinctions were minimal, well below predicted species-area effects. Evidently, only "perched" faunas are particularly vulnerable to sea level change. Although sea level falls are commonly associated with a faunal hiatus, changes associated therewith can be referred to sea level change itself only in limited situations, and other paleobiologic explanations should be sought in most cases. C1 UNIV CHICAGO,DEPT GEOL SCI,CHICAGO,IL 60637. RP VALENTINE, JW (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT INTEGRAT BIOL,BERKELEY,CA 94720, USA. NR 62 TC 44 Z9 45 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD APR 10 PY 1991 VL 96 IS B4 BP 6873 EP 6878 DI 10.1029/90JB00602 PG 6 WC Geosciences, Multidisciplinary SC Geology GA FG773 UT WOS:A1991FG77300064 ER PT J AU WIDRIG, CA ALVES, CA PORTER, MD AF WIDRIG, CA ALVES, CA PORTER, MD TI SCANNING TUNNELING MICROSCOPY OF ETHANETHIOLATE AND NORMAL-OCTADECANETHIOLATE MONOLAYERS SPONTANEOUSLY ADSORBED AT GOLD SURFACES SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID LANGMUIR-BLODGETT FILMS; INTRAMOLECULAR ELECTRON-TRANSFER; ORGANOSULFUR COMPOUNDS; METAL-SURFACES; GRAPHITE; MOLECULES; DISTANCE; SPECTROSCOPY; DIFFRACTION; ORIENTATION AB Monolayer films from ethanethiol (ET) and n-octadecanethiol (OT) spontaneously adsorbed onto epitaxially grown Au(111) films on mica were examined by scanning tunneling microscopy (STM). The resulting atomically resolved images are the first reported for gold-adsorbed organothiolate molecules and reveal the packing arrangement of the overlayer. Tunneling is presumed to occur between the microscope tip and the gold-bound sulfur of the n-alkanethiolate head group. For both the ET and OT monolayers, an image that corresponds to a hexagonally packed array of adsorbates with respective nearest-neighbor and next-nearest-neighbor spacings of 0.50 +/- 0.02 and 0.87 +/- 0.04 nm was observed. This packing agrees well with the (square-root 3BAR X square-root 3BAR)R30-degrees structure determined for long-chain n-alkanethiolate monolayers on Au(111) in recent helium diffraction 1 and electron diffraction 2 studies. Furthermore, images with the above spacings were found to exhibit continuity over areas from a few square nanometers up to about 600 nm 2, indicating the potential utility of STM for probing both the short- and long-range order of organic monolayer films. Structural interpretations of these images are presented and examined within the context of molecular level descriptions that have been recently developed from macroscopic characterization studies of these monolayers. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 56 TC 495 Z9 498 U1 3 U2 47 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD APR 10 PY 1991 VL 113 IS 8 BP 2805 EP 2810 DI 10.1021/ja00008a001 PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA FG032 UT WOS:A1991FG03200001 ER PT J AU PICOREL, R HOLT, RE HEALD, R COTTON, TM SEIBERT, M AF PICOREL, R HOLT, RE HEALD, R COTTON, TM SEIBERT, M TI STABILITY OF ISOLATED BACTERIAL AND PHOTOSYSTEM-II REACTION CENTER COMPLEXES ON AG ELECTRODE SURFACES - A SURFACE-ENHANCED RESONANCE RAMAN-STUDY SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID PHOTOSYNTHETIC BACTERIA; RHODOSPIRILLUM-RUBRUM; SCATTERING SPECTROSCOPY; PHOTOREACTION CENTER; D-2 POLYPEPTIDES; BETA-CAROTENE; CYTOCHROME-C; MEMBRANES; MANGANESE; PROTEIN AB Surface-enhanced resonance Raman scattering (SERRS) spectra from isolated Rhodospirillum rubrum bacterial reaction center complexes indicate that the carotenoid, spirilloxanthin, resides in the cis conformation, while SERRS spectra from isolated photosystem II (PSII) D1-D2-cytochrome b-559 reaction center complexes show that beta-carotene is in the all-trans conformation. The fact that the cis conformation of the native bacterial reaction center carotenoid is maintained during SERRS experiments suggests that significant denaturation of the protein matrix does not occur as a result of contact with the anodized Ag metallic surface required for observation of SERRS spectra. Although a similar conclusion cannot be drawn from observations of beta-carotene in PSII reaction centers, no new spectral bands previously ascribed to denatured cytochrome (Cyt) heme groups are observed with Cyt b-559 during SERRS experiments. Specific enhancement of SERRS signals from Cyt b-559 compared to the other chromophores of the PSII reaction center and in particular observation of a strong 1360-cm-1 band indicate that the heme group is located on or very close to the surface of the PSII reaction center complex and can be reduced by the Ag electrode. C1 SOLAR ENERGY RES INST,1617 COLE BLVD,GOLDEN,CO 80401. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. CSIC,STN EXPTL AULA DEI,E-50080 ZARAGOZA,SPAIN. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. RI PICOREL, RAFAEL/K-7930-2014 OI PICOREL, RAFAEL/0000-0003-3791-129X NR 38 TC 25 Z9 25 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD APR 10 PY 1991 VL 113 IS 8 BP 2839 EP 2843 DI 10.1021/ja00008a006 PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA FG032 UT WOS:A1991FG03200006 ER PT J AU HOUCK, DR HANNERS, JL UNKEFER, CJ AF HOUCK, DR HANNERS, JL UNKEFER, CJ TI BIOSYNTHESIS OF PYRROLOQUINOLINE QUINONE .2. BIOSYNTHETIC ASSEMBLY FROM GLUTAMATE AND TYROSINE SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID PYRROLO-QUINOLINE-QUINONE; GLUCOSE-DEHYDROGENASE APOENZYME; ACINETOBACTER-CALCOACETICUS; ESCHERICHIA-COLI; METHANOL DEHYDROGENASE; PROSTHETIC GROUP; MICROBIAL METABOLISM; HYPHOMICROBIUM-X; C2 COMPOUNDS; QUINOPROTEIN AB The biosynthesis of pyrroloquinoline quinone (PQQ), the prosthetic group of quinoproteins, was studied in the methylotrophic bacterium, Methylobacterium extorquens sp. AM1. Using C-13-labeled precursors and NMR spectroscopy, we have elucidated the biosynthetic origin of PQQ. In an initial series of feeding experiments, M. extorquens AM1 was grown on [1-C-13]- or [2-C-13]ethanol, and the resulting C-13 enrichments in PQQ were compared to the labeling patterns in amino acids. These data revealed that PQQ is biosynthesized from two amino acids: one molecule of glutamate and one molecule of either tyrosine or phenylalanine. Direct incorporation of tyrosine was observed by using [C-13]tyrosine labeled in the phenol side chain and at the methylene position. Moreover, a double-labeling experiment with [N-15, C-13]tyrosine demonstrated that the pyrrole nitrogen is derived from the alpha-amino group of tyrosine. Therefore, carbons 2', 2, 3, 3a, 4, 5, 5a, 9a, 1a and nitrogen 1 of PQQ are derived from tyrosine; the pyrrole ring forms via the intramolecular cyclization of the tyrosine. Carbons 7', 7, 8, 9, 9', and, in all probability, nitrogen 6 are derived from glutamate. Using this information, we have proposed biosynthetic pathways for the assembly of PQQ from tyrosine and glutamate. C1 LOS ALAMOS NATL LAB,INC-4,MS C345,LOS ALAMOS,NM 87545. NR 49 TC 37 Z9 38 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD APR 10 PY 1991 VL 113 IS 8 BP 3162 EP 3166 DI 10.1021/ja00008a053 PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA FG032 UT WOS:A1991FG03200053 ER PT J AU BRYAN, JC WHEELER, DR CLARK, DL HUFFMAN, JC SATTELBERGER, AP AF BRYAN, JC WHEELER, DR CLARK, DL HUFFMAN, JC SATTELBERGER, AP TI THE 1ST HOMOLEPTIC ALKOXIDE DIMERS OF RHENIUM(V) AND TUNGSTEN(V) - STEREOCHEMICAL CONSEQUENCES OF METAL METAL-BONDING IN EDGE-SHARED BIOCTAHEDRA SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note ID ELECTRONIC-STRUCTURE; COMPLEXES; MOLECULES; CHEMISTRY C1 LOS ALAMOS NATL LAB,INORGAN & STRUCT CHEM GRP INC4,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,NUCL & RADIOCHEM GRP INC11,LOS ALAMOS,NM 87545. INDIANA UNIV,CTR MOLEC STRUCT,BLOOMINGTON,IN 47405. RI Clark, David/A-9729-2011 NR 27 TC 17 Z9 17 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD APR 10 PY 1991 VL 113 IS 8 BP 3184 EP 3186 DI 10.1021/ja00008a064 PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA FG032 UT WOS:A1991FG03200064 ER PT J AU WERNER, MH WEMMER, DE AF WERNER, MH WEMMER, DE TI H-1 ASSIGNMENTS AND SECONDARY STRUCTURE DETERMINATION OF THE SOYBEAN TRYPSIN CHYMOTRYPSIN BOWMAN-BIRK INHIBITOR SO BIOCHEMISTRY LA English DT Article ID NUCLEAR MAGNETIC-RESONANCE; PRELIMINARY CRYSTALLOGRAPHIC DATA; AMINO-ACID SEQUENCE; PROTEINASE INHIBITOR; PROTEASE INHIBITOR; NMR-SPECTROSCOPY; SPECTRA; RESOLUTION; CLEAVAGE; COSY AB The H-1 resonance assignments and secondary structure of the trypsin/chymotrypsin Bowman-Birk inhibitor from soybeans were determined by nuclear magnetic resonance spectroscopy (NMR) at 600 MHz in an 18% acetonitrile-d3/aqueous cosolvent. Resonances from 69 of 71 amino acids were assigned sequence specifically. Residues Q11-T15 form an antiparallel beta-sheet with residues Q21-S25 in the tryptic inhibitory domain and an analogous region of antiparallel sheet forms between residues S38-A42 and Q48-V52 in the chymotryptic inhibitory domain. The inhibitory sites of each fragment (K16-S17 for trypsin, L43-S44 for chymotrypsin) are each part of a type VI like turn at one end of their respective region of the antiparallel beta-sheet. These structural elements are compared to those found in other Bowman-Birk inhibitors. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CHEM BIODYNAM,BERKELEY,CA 94720. NR 40 TC 39 Z9 41 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD APR 9 PY 1991 VL 30 IS 14 BP 3356 EP 3364 DI 10.1021/bi00228a002 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA FF646 UT WOS:A1991FF64600002 PM 2012801 ER PT J AU LEUNG, KN VANOS, CFA KUNKEL, WB AF LEUNG, KN VANOS, CFA KUNKEL, WB TI H- ENHANCEMENT PROCESS IN A MULTICUSP ION-SOURCE OPERATED WITH A BARIUM INSERT STRUCTURE SO APPLIED PHYSICS LETTERS LA English DT Article ID HYDROGEN DISCHARGE; SURFACE; TARGETS; METAL AB It has been demonstrated that the H- output current from a small multicusp source can be substantially enhanced if the hydrogen plasma is seeded with barium. Operating with a barium washer insert at the extraction aperture, it is found that the extractable H- current is increased by a factor of 3 if the insert bias potential is optimized. By use of a mixture of xenon and hydrogen gas, it is further demonstrated that the positive hydrogen ions are responsible for the observed H- enhancement. RP LEUNG, KN (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 18 TC 13 Z9 13 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 APR 8 PY 1991 VL 58 IS 14 BP 1467 EP 1469 DI 10.1063/1.105199 PG 3 WC Physics, Applied SC Physics GA FF231 UT WOS:A1991FF23100005 ER PT J AU PARKIN, SSP MANSOUR, A FELCHER, GP AF PARKIN, SSP MANSOUR, A FELCHER, GP TI ANTIFERROMAGNETIC INTERLAYER EXCHANGE COUPLING IN SPUTTERED FE-CR MULTILAYERS - DEPENDENCE ON NUMBER OF FE LAYERS SO APPLIED PHYSICS LETTERS LA English DT Article ID MAGNETIC-STRUCTURES; MAGNETORESISTANCE AB The antiferromagnetic arrangement of the magnetic moments of Fe layers in sputtered Fe/Cr multilayered structures is directly demonstrated from polarized neutron reflectometry studies. Such an antiferromagnetic interlayer exchange coupling is also consistent with magnetization studies on a series of [Fe/Cr]N structures. A remanent magnetization is observed for structures containing an odd number of bilayers but no remanent moment is found for an even number of bilayers. By examining the dependence of saturation field on the number of bilayers it is shown that the antiferromagnetic coupling strength is independent of the number of bilayers and is the same for superlattice and sandwich structures. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP PARKIN, SSP (reprint author), IBM CORP,ALMADEN RES CTR,DIV RES,650 HARRY RD,SAN JOSE,CA 95120, USA. RI Parkin, Stuart/D-2521-2012 NR 10 TC 59 Z9 59 U1 1 U2 7 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 APR 8 PY 1991 VL 58 IS 14 BP 1473 EP 1475 DI 10.1063/1.105201 PG 3 WC Physics, Applied SC Physics GA FF231 UT WOS:A1991FF23100007 ER PT J AU PAWELLEK, R FAHNLE, M ELSASSER, C HO, KM CHAN, CT AF PAWELLEK, R FAHNLE, M ELSASSER, C HO, KM CHAN, CT TI 1ST-PRINCIPLES CALCULATION OF THE RELAXATION AROUND A VACANCY AND THE VACANCY FORMATION ENERGY IN BCC LI SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Letter ID TRANSITION-METALS; ALKALI-METALS; PSEUDOPOTENTIALS; LITHIUM AB The formation energy and the formation volume of a vacancy in BCC Li are calculated by means of ab initio total energy calculations. The structural relaxation of the atoms surrounding the vacancy was determined using the Hellman-Feynman forces. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT LIB SCI,AMES,IA 50011. RP PAWELLEK, R (reprint author), MAX PLANCK INST MET RES,INST PHYS,HEISENBERGSTR 1,W-7000 STUTTGART 80,GERMANY. NR 22 TC 27 Z9 27 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD APR 8 PY 1991 VL 3 IS 14 BP 2451 EP 2455 DI 10.1088/0953-8984/3/14/024 PG 5 WC Physics, Condensed Matter SC Physics GA FG435 UT WOS:A1991FG43500024 ER PT J AU WARNOCK, RL AF WARNOCK, RL TI CLOSE APPROXIMATIONS TO INVARIANT TORI IN NONLINEAR MECHANICS SO PHYSICAL REVIEW LETTERS LA English DT Article AB A general method to compute precise approximations to invariant tori of Hamiltonian systems is presented. For illustration, a strongly nonlinear example from accelerator theory is treated, in 2 1/2 degrees of freedom. Accuracy, computation time, and effectiveness near resonances are found to be highly favorable in comparison to previous methods. RP WARNOCK, RL (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305, USA. NR 15 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 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 8 PY 1991 VL 66 IS 14 BP 1803 EP 1806 DI 10.1103/PhysRevLett.66.1803 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000001 ER PT J AU KODAMA, K USHIDA, N MOKHTARANI, A PAOLONE, VS VOLK, JT WILCOX, JO YAGER, PM EDELSTEIN, RM FREYBERGER, AP GIBAUT, DB LIPTON, RJ NICHOLS, WR POTTER, DM RUSS, JS ZHANG, Y JANG, HI KIM, JY LIM, IT PAC, MY BALLER, BR STEFANSKI, RJ NAKAZAWA, K TASAKA, S CHOI, YS CHUNG, KH KIM, DC PARK, IG SONG, JS YOON, CS CHIKAWA, M ABE, T FUJII, T FUJIOKA, G FUJIWARA, K FUKUSHIMA, H HARA, T TAKAHASHI, Y TARUMA, K TSUZUKI, Y YOKOYAMA, C CHANG, SD CHEON, BG CHO, JH KANG, JS KIM, CO KIM, KY KIM, TY LEE, JC LEE, SB LIM, GY NAM, SW SHIN, TS SIM, KS WOO, JK ISOKANE, Y TSUNEOKA, Y AOKI, S GAUTHIER, A HOSHINO, K KITAMURA, H KOBAYASHI, M MIYANISHI, M NAKAMURA, K NAKAMURA, M NAKAMURA, Y NAKANISHI, S NIU, K NIWA, K TAJIMA, H DUNLEA, JM FREDERIKSEN, SG KURAMATA, S LUNDBERG, BG OLEYNIK, GA REAY, NW REIBEL, K SIDWELL, RA STANTON, NR MORIYAMA, K SHIBATA, H JAFFERY, TS KALBFLEISCH, GR SKUBIC, PL SNOW, JM WILLIS, SE YUAN, WY KUSUMOTO, O OKUSAWA, T TERANAKA, M TOMINAGA, T WATANABE, T YAMATO, J OKABE, H YOKOTA, J ADACHI, M KAZUNO, M MINAKAWA, F NIU, E SHIBUYA, H WATANABE, S FUKUDA, O SATO, Y TEZUKA, I BAHK, SY KIM, SK AF KODAMA, K USHIDA, N MOKHTARANI, A PAOLONE, VS VOLK, JT WILCOX, JO YAGER, PM EDELSTEIN, RM FREYBERGER, AP GIBAUT, DB LIPTON, RJ NICHOLS, WR POTTER, DM RUSS, JS ZHANG, Y JANG, HI KIM, JY LIM, IT PAC, MY BALLER, BR STEFANSKI, RJ NAKAZAWA, K TASAKA, S CHOI, YS CHUNG, KH KIM, DC PARK, IG SONG, JS YOON, CS CHIKAWA, M ABE, T FUJII, T FUJIOKA, G FUJIWARA, K FUKUSHIMA, H HARA, T TAKAHASHI, Y TARUMA, K TSUZUKI, Y YOKOYAMA, C CHANG, SD CHEON, BG CHO, JH KANG, JS KIM, CO KIM, KY KIM, TY LEE, JC LEE, SB LIM, GY NAM, SW SHIN, TS SIM, KS WOO, JK ISOKANE, Y TSUNEOKA, Y AOKI, S GAUTHIER, A HOSHINO, K KITAMURA, H KOBAYASHI, M MIYANISHI, M NAKAMURA, K NAKAMURA, M NAKAMURA, Y NAKANISHI, S NIU, K NIWA, K TAJIMA, H DUNLEA, JM FREDERIKSEN, SG KURAMATA, S LUNDBERG, BG OLEYNIK, GA REAY, NW REIBEL, K SIDWELL, RA STANTON, NR MORIYAMA, K SHIBATA, H JAFFERY, TS KALBFLEISCH, GR SKUBIC, PL SNOW, JM WILLIS, SE YUAN, WY KUSUMOTO, O OKUSAWA, T TERANAKA, M TOMINAGA, T WATANABE, T YAMATO, J OKABE, H YOKOTA, J ADACHI, M KAZUNO, M MINAKAWA, F NIU, E SHIBUYA, H WATANABE, S FUKUDA, O SATO, Y TEZUKA, I BAHK, SY KIM, SK TI MEASUREMENT OF THE RELATIVE BRANCHING FRACTION GAMMA(D0-]K-MU-V)GAMMA(D0-]MU-X) SO PHYSICAL REVIEW LETTERS LA English DT Article ID EXCLUSIVE SEMILEPTONIC DECAYS; D-MESON; POLARIZATION AB The fraction f of D0 semimuonic decays which occur through the K-mu-v mode has been measured in a hybrid emulsion spectrometer. Analysis of 124 semimuonic D0-decay candidates gives f = 0.32 +/- 0.05(stat) +/- 0.05(syst). From this measurement and existing data on the D0 semileptonic branching ratio and lifetime, we obtain the branching ratio R(D0 --> K- mu+v) = (2.4 +/- 0.4 +/- 0.5)% and partial decay rate-GAMMA(D0 --> K- mu+v) = (5.6 +/- 0.9 +/- 1.2) x 10(10) s-1. C1 UNIV CALIF DAVIS,DAVIS,CA 95616. CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213. CHONNAM NATL UNIV,KWANGJU 500757,SOUTH KOREA. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. GIFU UNIV,GIFU 50111,JAPAN. GYEONGSANG NATL UNIV,JINJU 660300,SOUTH KOREA. KINKI UNIV,HIGASHIOSAKA,OSAKA 577,JAPAN. KOBE UNIV,KOBE 657,JAPAN. UNIV KOREA,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. SCI EDUC INST OSAKA PREFECTURE,OSAKA 558,JAPAN. TOHO UNIV,FUNABASHI,CHIBA 274,JAPAN. UTSUNOMIYA UNIV,UTSUNOMIYA 350,JAPAN. WONKWANG UNIV,IRI 570749,SOUTH KOREA. RP KODAMA, K (reprint author), AICHI UNIV EDUC,KARIYA 448,JAPAN. RI Russ, James/P-3092-2014; Aoki, Shigeki/L-6044-2015 OI Russ, James/0000-0001-9856-9155; NR 29 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 APR 8 PY 1991 VL 66 IS 14 BP 1819 EP 1822 DI 10.1103/PhysRevLett.66.1819 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000005 ER PT J AU WARBURTON, EK AF WARBURTON, EK TI MESONIC ENHANCEMENT OF THE WEAK AXIAL-VECTOR CURRENT EVALUATED FROM BETA-DECAY IN THE LEAD REGION SO PHYSICAL REVIEW LETTERS LA English DT Article ID EXCHANGE CORRECTION AB A shell-model study is made of first-forbidden beta-decay in A = 205-212 nuclei. A least-squares fit for eighteen DELTA-J = 0 and 1 decays gave a scaling factor for the rank-one contributions of 0.97 +/- 0.06, i.e., agreement with experiment, and an enhancement factor epsilon-MEC for the rank-zero matrix element of gamma-5 of 2.01 +/- 0.05, indicating an enhancement by 100% over the impulse approximation. A 40% effect is predicted from meson exchange. Thus, a deficiency in the meson-exchange calculation or some further unforeseen effect is suggested. RP WARBURTON, EK (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 18 TC 66 Z9 66 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 APR 8 PY 1991 VL 66 IS 14 BP 1823 EP 1826 DI 10.1103/PhysRevLett.66.1823 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000006 ER PT J AU FRIAR, JL GIBSON, BF JEAN, HC PAYNE, GL AF FRIAR, JL GIBSON, BF JEAN, HC PAYNE, GL TI NUCLEAR TRANSITION RATES IN MU-CATALYZED P-D FUSION SO PHYSICAL REVIEW LETTERS LA English DT Article ID TRITON GROUND-STATE; DEUTERIUM AB Nuclear transition rates in mu-catalyzed p-d fusion have been calculated using numerically converged He-3 bound-state and p-d scattering wave functions for the first time. The transition rates for M 1 radiative capture in both quartet and doublet initial states have been computed using a model of meson-exchange currents which reproduces the thermal n-d capture cross section, and are in excellent agreement with experiment. The muon internal-conversion rate is in very good agreement with a recent reanalysis of old bubble-chamber measurements. Furthermore, our nonvanishing quartet capture rate resolves the anomaly in the Wolfenstein-Gerstein effect. C1 UNIV MAINZ,DIV THEORET,W-6500 MAINZ,GERMANY. UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242. RP FRIAR, JL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 33 TC 47 Z9 47 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 APR 8 PY 1991 VL 66 IS 14 BP 1827 EP 1830 DI 10.1103/PhysRevLett.66.1827 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000007 ER PT J AU WONG, KL FONCK, RJ PAUL, SF ROBERTS, DR FREDRICKSON, ED NAZIKIAN, R PARK, HK BELL, M BRETZ, NL BUDNY, R COHEN, S HAMMETT, GW JOBES, FC MEADE, DM MEDLEY, SS MUELLER, D NAGAYAMA, Y OWENS, DK SYNAKOWSKI, EJ AF WONG, KL FONCK, RJ PAUL, SF ROBERTS, DR FREDRICKSON, ED NAZIKIAN, R PARK, HK BELL, M BRETZ, NL BUDNY, R COHEN, S HAMMETT, GW JOBES, FC MEADE, DM MEDLEY, SS MUELLER, D NAGAYAMA, Y OWENS, DK SYNAKOWSKI, EJ TI EXCITATION OF TOROIDAL ALFVEN EIGENMODES IN TFTR SO PHYSICAL REVIEW LETTERS LA English DT Article ID ION CONFINEMENT; TOKAMAKS; PLASMA; WAVES; LIMIT AB Deuterium neutral beams with energies up to 110 keV were injected into TFTR (Tokamak Fusion Test Reactor) plasmas at low magnetic field such that the beam injection velocities were comparable to the Alfven velocity. Excitation of toroidal Alfven eigenmodes was observed by Mirnov coils and beam emission spectroscopy. C1 UNIV WISCONSIN,DEPT NUCL ENGN,MADISON,WI 53706. RP WONG, KL (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08543, USA. RI Hammett, Gregory/D-1365-2011 OI Hammett, Gregory/0000-0003-1495-6647 NR 21 TC 271 Z9 272 U1 3 U2 15 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 8 PY 1991 VL 66 IS 14 BP 1874 EP 1877 DI 10.1103/PhysRevLett.66.1874 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000019 ER PT J AU MEI, J FERNANDO, GW AF MEI, J FERNANDO, GW TI ANOMALIES IN THE ELASTIC PROPERTIES OF METALLIC MULTILAYERS SO PHYSICAL REVIEW LETTERS LA English DT Article ID EMBEDDED-ATOM METHOD; MOLECULAR-DYNAMICS; THIN-FILMS; MODULUS; SUPERLATTICES; COPPER; CONSTANTS; NICKEL; STRAIN; FOILS AB Using variable-cell molecular dynamics, we have studied the elastic constants of the metallic multilayer system Cu/Pd with embedded-atom potentials. Planar coherency remains intact at very low repeat distances (wavelengths), and the biaxial modulus shows decreases up to about 50%. At small repeat lengths, we predict that these coherent multilayers will become soft, in agreement with recent ultrasonic experiments, but in contrast to bulge-test observations. C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP MEI, J (reprint author), SUNY STONY BROOK,DEPT PHYS,STONY BROOK,NY 11794, USA. NR 24 TC 11 Z9 11 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 APR 8 PY 1991 VL 66 IS 14 BP 1882 EP 1885 DI 10.1103/PhysRevLett.66.1882 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000021 ER PT J AU NYLUND, ES TSIRONIS, GP AF NYLUND, ES TSIRONIS, GP TI EVIDENCE FOR SOLITONS IN HYDROGEN-BONDED SYSTEMS SO PHYSICAL REVIEW LETTERS LA English DT Article ID STOCHASTIC DIFFERENTIAL-EQUATIONS; NUMERICAL-INTEGRATION; PROTON CONDUCTION; CHAINS; MECHANISMS; STABILITY; TRANSPORT AB Langevin-type finite-temperature simulations show that soliton mobility in hydrogen-bonded chains is a nonmonotonic function of temperature. In the temperature range of 170-240 K, soliton mobility initially increases, reaches a maximum at approximately 190 K, subsequently decreases to a minimum at approximately 210 K, and then increases again. This behavior is in qualitative agreement with experimental data for ice crystals in the same temperature range. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV N TEXAS,DEPT PHYS,DENTON,TX 76203. RP NYLUND, ES (reprint author), UNIV CALIF SAN DIEGO,DEPT CHEM,B-040,LA JOLLA,CA 92093, USA. RI Tsironis, George/C-2683-2011 NR 25 TC 24 Z9 25 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 APR 8 PY 1991 VL 66 IS 14 BP 1886 EP 1889 DI 10.1103/PhysRevLett.66.1886 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000022 ER PT J AU PRICE, DL SABOUNGI, ML REIJERS, R KEARLEY, G WHITE, R AF PRICE, DL SABOUNGI, ML REIJERS, R KEARLEY, G WHITE, R TI 2-STAGE MELTING IN CESIUM LEAD ALLOYS SO PHYSICAL REVIEW LETTERS LA English DT Article ID ALKALI LEAD; LIQUID AB The intermediate phase of the intermetallic alloy CsPb is shown to be a plastic crystal characterized by jump reorientations of Cs4Pb4 structural units. The wave-vector variation of elastic and quasielastic intensities is well reproduced by a simple model of independent structural units jumping between the four orientations observed in the crystal at room temperature. This represents the first observation of a plastic-crystal phase in a metal alloy. C1 INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE. RP PRICE, DL (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Price, David Long/A-8468-2013; Saboungi, Marie-Louise/C-5920-2013 OI Saboungi, Marie-Louise/0000-0002-0607-4815 NR 15 TC 25 Z9 25 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 APR 8 PY 1991 VL 66 IS 14 BP 1894 EP 1897 DI 10.1103/PhysRevLett.66.1894 PG 4 WC Physics, Multidisciplinary SC Physics GA FF230 UT WOS:A1991FF23000024 ER PT J AU MARGOLIS, SB AF MARGOLIS, SB TI CHAOTIC COMBUSTION OF SOLIDS AND HIGH-DENSITY FLUIDS NEAR POINTS OF STRONG RESONANCE SO PROCEEDINGS OF THE ROYAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Article ID FLAME PROPAGATION; ASYMPTOTIC THEORY; FUEL COMBUSTION; SPINNING WAVES; BIFURCATION; FRONTS AB The loss of stability of steady, planar combustion waves propagating through solids and high-density fluids occurs via Hopf bifurcation for sufficiently large values of a parameter related to the activation energy of the reaction. Near multiple eigenvalues corresponding to points of strong resonance, the dynamical behaviour of an asymptotic model derived from the original set of conservation equations is governed by an ordinary dynamical system for the amplitudes of the eigenmodes of the linearized problem. An analysis of these amplitude equations then completely determines the local bifurcation structure. It is shown that in certain parameter regimes, these equations admit finite-amplitude, chaotic solutions following the loss of stability of a secondary bimodal solution branch of entrained time-periodic combustion waves. Thus, in contrast to direct numerical integration of the original system of conservation equations far above the neutral stability boundary that marks the transition from steady to non-steady burning, it is shown that multi-dimensional chaotic flame propagation can be predicted from nonlinear stability theory in the neighbourhood of a multiple bifurcation point. RP MARGOLIS, SB (reprint author), SANDIA NATL LABS, COMBUST RES FACIL, LIVERMORE, CA 94551 USA. NR 26 TC 12 Z9 12 U1 0 U2 0 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8444 J9 P R SOC-MATH PHYS SC JI P. Roy. Soc.-Math. Phys. Sci. PD APR 8 PY 1991 VL 433 IS 1887 BP 131 EP 150 DI 10.1098/rspa.1991.0039 PG 20 GA FG646 UT WOS:A1991FG64600008 ER PT J AU BENNER, RE BASARAN, OA SCRIVEN, LE AF BENNER, RE BASARAN, OA SCRIVEN, LE TI EQUILIBRIA, STABILITY AND BIFURCATIONS OF ROTATING COLUMNS OF FLUID SUBJECTED TO PLANAR DISTURBANCES SO PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES LA English DT Article ID FINITE-ELEMENT METHOD; CONTINUATION AB Long gyrostatically rotating cylindrical drops held together by surface tension are amenable to conventional bifurcation analysis as well as newer, computer-aided methods of analysis, and so are useful prototypes of three-dimensional drops. Instability to Rayleigh's axisymmetric mode is set aside and effects of translationally symmetric (planar) disturbances are investigated. The shapes and stability of drops on and near the family of perfect cylinders are determined by means of the power series method of Millman & Keller. Nonlinearly distorted shapes and their stability are calculated by Galerkin or finite-element analysis, using either (a) a polar or (b) a composite polar and cartesian representation of drop shape. The disadvantage of using single-coordinate representation of drop shapes near break-up is brought out. The new results show that a family of symmetric two-lobed shapes bifurcates from the main family of perfectly cylindrical shapes when the rotation rate attains a critical value, in accord with the linearized hydrodynamic analysis of Hocking. Moreover, a new family of asymmetric two-lobed shapes is uncovered that bifurcates from and rejoins the family of symmetric two-lobed shapes, using a polar representation of drop shape. Plainly, the new shape family is the two-dimensional analog of the family of three-dimensional capillary peanuts discovered by Brown & Scriven, who used a spherical polar representation of drop shape. By way of contrast, the results obtained using a composite polar and cartesian representation of drop shape show that the gyrostatic family of symmetric two-lobed shapes does not exchange stability with a family of asymmetric shapes and eventually breaks up by becoming a family of self-intersecting shapes. C1 UNIV MINNESOTA,DEPT CHEM ENGN & MAT SCI,MINNEAPOLIS,MN 55455. OAK RIDGE NATL LAB,DIV CHEM TECHNOL,OAK RIDGE,TN 37831. NR 40 TC 7 Z9 7 U1 0 U2 0 PU ROYAL SOC LONDON PI LONDON PA 6 CARLTON HOUSE TERRACE, LONDON, ENGLAND SW1Y 5AG SN 1364-5021 J9 P ROY SOC LOND A MAT JI Proc. R. Soc. London Ser. A-Math. Phys. Eng. Sci. PD APR 8 PY 1991 VL 433 IS 1887 BP 81 EP 99 DI 10.1098/rspa.1991.0036 PG 19 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FG646 UT WOS:A1991FG64600005 ER PT J AU HAAS, O RUDNICKI, J MCLARNON, FR CAIRNS, EJ AF HAAS, O RUDNICKI, J MCLARNON, FR CAIRNS, EJ TI MECHANISTIC INVESTIGATIONS OF REDOX POLYMER-COATED ELECTRODES USING PROBE-BEAM DEFLECTION AND CYCLIC VOLTAMMETRY SO JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS LA English DT Article ID POLYANILINE FILMS; ELECTROCHEMICAL REACTIONS; ELECTRICAL-CONDUCTIVITY; OXIDATION; REDUCTION; POLYPYRROLE; PROTONATION; STATE; PH AB Optical probe-beam deflection signals, together with cyclic voltammograms, have been used to analyse the electron-transfer process at electrodes coated with [Ru(bpy)2CIPVP]Cl, polyaniline and poly(1-hydroxyphenazine). With this technique it is possible to determine if anions or cations are used as the charge-compensating ions in the electron-transfer process. The electron transfer at [Ru(bpy)2CIPVP]Cl was shown to be accompanied by a simple counter-ion diffusion process. The known electron-transfer mechanism of polyaniline was confirmed and a plausible mechanism for the electron transfer of poly(l-hydroxyphenazine) has been proposed. The additional information (direction of concentration gradients) obtained by a simple probe-beam deflection experiment is extremely useful in the analysis of reaction mechanisms at redox polymer-coated electrodes. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV APPL SCI,BERKELEY,CA 94720. RP HAAS, O (reprint author), PAUL SCHERRER INST,CH-5232 VILLIGEN,SWITZERLAND. RI Cairns, Elton/E-8873-2012 OI Cairns, Elton/0000-0002-1179-7591 NR 34 TC 40 Z9 40 U1 0 U2 2 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF SN 0956-5000 J9 J CHEM SOC FARADAY T JI J. Chem. Soc.-Faraday Trans. PD APR 7 PY 1991 VL 87 IS 7 BP 939 EP 945 DI 10.1039/ft9918700939 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA FG052 UT WOS:A1991FG05200005 ER PT J AU DEBOER, RJ PERELSON, AS AF DEBOER, RJ PERELSON, AS TI SIZE AND CONNECTIVITY AS EMERGENT PROPERTIES OF A DEVELOPING IMMUNE NETWORK SO JOURNAL OF THEORETICAL BIOLOGY LA English DT Article ID FUNCTIONAL IDIOTYPIC NETWORK; B-CELL REPERTOIRE; NORMAL MICE; LY-1 B; ANTIBODIES; SYSTEM; SUPPRESSION; ACTIVATION; RESPONSES; MODEL RP DEBOER, RJ (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,FAC THEORET,MAIL STOP K710,LOS ALAMOS,NM 87545, USA. RI De Boer, Rob/B-6050-2011 OI De Boer, Rob/0000-0002-2130-691X FU NCRR NIH HHS [RR 06555]; NIAID NIH HHS [AI 28433] NR 78 TC 93 Z9 95 U1 2 U2 4 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0022-5193 J9 J THEOR BIOL JI J. Theor. Biol. PD APR 7 PY 1991 VL 149 IS 3 BP 381 EP 424 DI 10.1016/S0022-5193(05)80313-3 PG 44 WC Biology; Mathematical & Computational Biology SC Life Sciences & Biomedicine - Other Topics; Mathematical & Computational Biology GA FK151 UT WOS:A1991FK15100007 PM 2062103 ER PT J AU KRAUSE, JL SCHAFER, KJ KULANDER, KC AF KRAUSE, JL SCHAFER, KJ KULANDER, KC TI OPTICAL HARMONIC-GENERATION IN ATOMIC AND MOLECULAR-HYDROGEN SO CHEMICAL PHYSICS LETTERS LA English DT Article ID RARE-GASES; MULTIPHOTON IONIZATION; RADIATION AB We compare calculated optical harmonic spectra for the hydrogen molecule and the hydrogen atom in an intense, linearly polarized laser field. The hydrogen atom calculations use an exact, time-dependent method and the hydrogen molecule calculations are performed in a time-dependent Hartree-Fock approximation. In both cases, the laser-matter interaction is treated completely non-perturbatively. We show that if the H-2 bond length is stretched so that H-2 has the same ionization potential as H, both systems produced remarkably similar harmonic spectra when irradiated with a 1064 nm laser at 1 x 10(14) or 2 x 10(13) W/cm2. RP KRAUSE, JL (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94550, USA. NR 18 TC 33 Z9 33 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 APR 5 PY 1991 VL 178 IS 5-6 BP 573 EP 578 DI 10.1016/0009-2614(91)87022-4 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA FG959 UT WOS:A1991FG95900022 ER PT J AU NELSON, DA MOLTON, PM JENSEN, GA AF NELSON, DA MOLTON, PM JENSEN, GA TI RADIOLUMINESCENT POLYMERS - PREPARATION OF DEUTEROPOLYSTYRENE AND TRITOPOLYSTYRENE SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article AB Deuterium and tritium exchanges were performed on the aromatic groups of polystyrene using DCl or TCl and TiCl4. Up to 5 deuterium atoms per monomer unit could be placed on the aromatic groups depending upon time, DCl pressure, and TiCl4 concentration. Tritiated polystyrene mixed with zinc sulfide phosphor produced 1.06 Cd/m2 of luminance. RP NELSON, DA (reprint author), PACIFIC NW LAB, BOX 999, RICHLAND, WA 99352 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0021-8995 J9 J APPL POLYM SCI JI J. Appl. Polym. Sci. PD APR 5 PY 1991 VL 42 IS 7 BP 1801 EP 1806 DI 10.1002/app.1991.070420701 PG 6 WC Polymer Science SC Polymer Science GA FB658 UT WOS:A1991FB65800001 ER PT J AU SOMERVILLE, C BROWSE, J AF SOMERVILLE, C BROWSE, J TI PLANT LIPIDS - METABOLISM, MUTANTS, AND MEMBRANES SO SCIENCE LA English DT Article ID ACYL-CARRIER PROTEIN; CHILLING-RESISTANT PLANTS; FATTY-ACID COMPOSITION; GLYCEROL-3-PHOSPHATE ACYLTRANSFERASE ACTIVITY; ENHANCED THERMAL TOLERANCE; ARABIDOPSIS DEFICIENT; BRASSICA-NAPUS; LEAF LIPIDS; CHLOROPLAST ULTRASTRUCTURE; IMMUNOGOLD-LOCALIZATION AB The mechanisms that regulate plant lipid metabolism determine the dietary and industrial value of storage oils found in economically important species and may control the ability of many plants to survive exposure to temperature extremes. Many of the problems researchers have in defining the pathways, enzymes, and genes involved in plant lipid metabolism appear to be amenable to analysis by genetic approaches. Mutants with alterations in membrane lipid composition have also been used to study the structural and adaptive roles of lipids. The application of genetic engineering methods affords opportunities for researchers to apply knowledge gained about plant lipid metabolism toward enhanced use of plant oils as abundant and renewable sources of reduced carbon. C1 WASHINGTON STATE UNIV,INST BIOL CHEM,PULLMAN,WA 99164. RP SOMERVILLE, C (reprint author), MICHIGAN STATE UNIV,US DOE,PLANT RES LAB,E LANSING,MI 48824, USA. RI Somerville, Christopher/A-4048-2009; OI Somerville, Christopher/0000-0003-4647-0094; Browse, John/0000-0002-2554-2821 NR 106 TC 294 Z9 318 U1 0 U2 34 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD APR 5 PY 1991 VL 252 IS 5002 BP 80 EP 87 DI 10.1126/science.252.5002.80 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FE952 UT WOS:A1991FE95200037 PM 17739077 ER PT J AU FITZMAURICE, DJ FREI, H AF FITZMAURICE, DJ FREI, H TI PHOTOCHEMISTRY OF CYCLOALKENE.NO2 COLLISIONAL PAIRS IN A CRYOGENIC MATRIX - CHEMICAL TRAPPING OF CYCLOALKENE OXIRANE BIRADICAL CONFORMERS, AND COMPARISON OF PRODUCT CONTROL FOR EXCITATION ABOVE AND BELOW THE NO2 DISSOCIATION THRESHOLD SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID IODIDE ACETYLENE COMPLEXES; VANDERWAALS COMPLEXES; VIBRATIONAL-SPECTRA; PHOTOLYSIS PRODUCTS; NITROGEN-DIOXIDE; SOLID KRYPTON; RED-LIGHT; OZONE; O(3P)+C2H4; RADICALS AB Oxygen atom transfer from NO2 to cyclohexene and from NO2 to cyclopentene was induced by excitation of reactant pairs isolated in solid Ar by light in the wavelength range between 610 and 355 nm. Continuous wave dye, Ar ion, and Nd:YAG lasers were used as photolysis sources, and the chemistry was monitored by Fourier transform infrared spectroscopy. The O atom transfer path accessible at wavelengths longer than the 398-nm NO2 dissociation limit led to cycloalkene oxide as the only final oxidation product. The reaction threshold was at 610 nm. In the case of cyclohexene + NO2, two cyclohexyl nitrite radical diastereomers were produced concurrently with the epoxide. Infrared analysis based on O-18 and N-15 isotopic substitution, visible light induced wavelength-selective photodissociation, and matrix annealing experiments indicate that the two stereoisomers are cyclohexyl nitrite radical chair conformers with an equatorial and an axial C-O bond, respectively. Since these are transient cyclohexene oxirane biradicals chemically trapped by reaction with NO cage coproduct according to the previously established reaction mechanism, it is concluded that cyclohexene oxidation proceeds along two diastereomeric paths. In the case of the cyclopentene + NO2 reaction only a single cyclopentyl nitrite radical stereoisomer is observed, presumably because of the very low barrier to pseudorotation of the pentyl ring. Loss of product specificity upon photolysis of cyclohexene/NO2/Ar and cyclopentene/NO2/Ar matrices above the NO2 dissociation threshold with 355-nm light is evident from the appearance of two additional products aside from cycloalkene oxide, namely, cyclohexanone (cyclopentanone) and 2-cyclohexen-1-ol (2-cyclopenten-1-ol). Absorbance growth behavior of these products indicated that the ketone and epoxide originate from the same reservoir of sustained cycloalkene-NO2 collisional pairs that reacts at visible wavelengths by large-amplitude O atom transfer, while cycloalkenol stems from dissociation of NO2, followed by reaction of free O(3P) with cycloalkene. It is proposed that large-amplitude oxygen atom transfer remains the dominant pathway for collisional cycloalkene.NO2 pairs excited above the NO2 dissociation threshold. Reaction by NO2 predissociation is operative for reactant pairs with orientation or distances (including separation by Ar host atoms) that make the large-amplitude reaction inaccessible. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CHEM BIODYNAM,BERKELEY,CA 94720. NR 44 TC 20 Z9 20 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD APR 4 PY 1991 VL 95 IS 7 BP 2652 EP 2661 DI 10.1021/j100160a007 PG 10 WC Chemistry, Physical SC Chemistry GA FE953 UT WOS:A1991FE95300007 ER PT J AU JONES, LH SWANSON, BI AF JONES, LH SWANSON, BI TI TRANSVERSE OPTICAL TO LONGITUDINAL OPTICAL SPLITTING AND DIPOLE-MOMENT DERIVATIVES FROM INFRARED-SPECTRA OF THIN-FILMS OF MOLECULAR-SOLIDS SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID ACTIVE FUNDAMENTALS; COMBINATION BANDS; CRYSTAL-STRUCTURE; RAMAN-SPECTRA; INTENSITIES; MATRIX AB For a number of molecular solids as thin films, longitudinal optical (LO) and transverse optical (TO) frequencies have been observed for molecular vibrations absorbing in the mid-infrared spectral region. From the LO-TO splitting, dipole moment derivatives have been calculated from equations previously derived for molecules on sites of tetrahedral or greater symmetry. For spherical top molecules these calculated derivatives are compared with values calculated from intensities reported in the literature. The agreement is remarkably good considering that most of the intensity data was determined for the gas phase and most of the solids have the molecules on sites of symmetry lower than tetrahedral. This offers a useful technique for determining dipole moment derivatives and infrared absorption intensities for gas-phase species as well as molecular and ionic solids. C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV ISOTOPE & NUCL CHEM,LOS ALAMOS,NM 87545. NR 39 TC 24 Z9 24 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD APR 4 PY 1991 VL 95 IS 7 BP 2701 EP 2707 DI 10.1021/j100160a016 PG 7 WC Chemistry, Physical SC Chemistry GA FE953 UT WOS:A1991FE95300016 ER PT J AU BEDDO, M BURLESON, G FAUCETT, JA GARDINER, S KYLE, G GARNETT, R GROSNICK, DP HILL, D JOHNSON, KF LOPIANO, D OHASHI, Y SHIMA, T SPINKA, H STANEK, R UNDERWOOD, D YOKOSAWA, A GLASS, G KENEFICK, R NATH, S NORTHCLIFFE, L JARMER, JJ PENTTILA, S JEPPESEN, RH TRIPARD, G DEVEREUX, M KROLL, P AF BEDDO, M BURLESON, G FAUCETT, JA GARDINER, S KYLE, G GARNETT, R GROSNICK, DP HILL, D JOHNSON, KF LOPIANO, D OHASHI, Y SHIMA, T SPINKA, H STANEK, R UNDERWOOD, D YOKOSAWA, A GLASS, G KENEFICK, R NATH, S NORTHCLIFFE, L JARMER, JJ PENTTILA, S JEPPESEN, RH TRIPARD, G DEVEREUX, M KROLL, P TI MEASUREMENTS OF DELTA-SIGMA-L (NP) BETWEEN 500 AND 800 MEV SO PHYSICS LETTERS B LA English DT Article ID TOTAL-CROSS-SECTION; LONGITUDINAL SPIN STATES; PP SCATTERING; ENERGY-RANGE; DIFFERENCE; RESONANCE; KNN; KLL AB A measurement of DELTA-sigma-L (np), the difference between neutron-proton total cross sections in pure longitudinal spin states, is described. Data were taken for five energies between 500 and 800 MeV, with statistical errors of almost-equal-to 1.5 mb and an estimated normalization error of 6%. The data, combined with other results, show some evidence for an elastic I = 0 spin-singlet resonance with mass approximately 2213 MeV and width approximately 74 MeV, or a coupled-triplet resonance with similar mass and width. C1 NEW MEXICO STATE UNIV, LAS CRUCES, NM 88003 USA. TEXAS A&M UNIV SYST, COLLEGE STN, TX 77843 USA. UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA. UNIV MONTANA, MISSOULA, MT 59812 USA. WASHINGTON STATE UNIV, PULLMAN, WA 99164 USA. EARLHAM COLL, RICHMOND, IN 47374 USA. UNIV WUPPERTAL, W-5600 WUPPERTAL, GERMANY. RP BEDDO, M (reprint author), ARGONNE NATL LAB, ARGONNE, IL 60439 USA. NR 29 TC 25 Z9 26 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 APR 4 PY 1991 VL 258 IS 1-2 BP 24 EP 28 DI 10.1016/0370-2693(91)91202-7 PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA FH146 UT WOS:A1991FH14600005 ER PT J AU HOLDOM, B AF HOLDOM, B TI CORRECTIONS TO TRILINEAR GAUGE VERTICES AND E+E--]W+W- IN TECHNICOLOR THEORIES SO PHYSICS LETTERS B LA English DT Article ID FERMION DETERMINANTS; ANOMALIES; QCD AB We use an effective lagrangian to study the leading corrections to WW-gamma and WWZ vertices from new, weak isospin conserving, heavy physics. The corrections occur in g1Z-1, k(Z)-1, and k(A)-1 and input from low energy QCD is used to estimate their size in technicolor theories. We then study the enhancement of these corrections in the process e+e- --> W+W- at high energies. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP HOLDOM, B (reprint author), UNIV TORONTO,DEPT PHYS,TORONTO M5S 1A7,ONTARIO,CANADA. NR 23 TC 54 Z9 54 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 APR 4 PY 1991 VL 258 IS 1-2 BP 156 EP 160 DI 10.1016/0370-2693(91)91224-J PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA FH146 UT WOS:A1991FH14600027 ER PT J AU DECAMP, D DESCHIZEAUX, B GOY, C LESS, JP MINARD, MN ALEMANY, R CRESPO, JM DELFINO, M FERNANDEZ, E GAITAN, V GARRIDO, L MATO, P MIQUEL, R MIR, LM ORTEU, S PACHECO, A PERLAS, JA TUBAU, E CATANESI, MG CREANZA, D DE PALMA, M FARILLA, A IASELLI, G MAGGI, G MAGGI, M NATALI, S NUZZO, S QUATTROMINI, M RANIERI, A RASO, G ROMANO, F RUGGIERI, F SELVAGGI, G SILVESTRIS, L TEMPESTA, P ZITO, G GAO, Y HU, H HUANG, D HUANG, X LIN, J LOU, J QIAO, C RUAN, T WANG, T XIE, Y XU, D XU, R ZHANG, J ZHAO, W ALBRECHT, H ATWOOD, WB BIRD, F BLUCHER, E BONVICINI, G BOSSI, F BROWN, D BURNETT, TH DREVERMANN, H DYDAK, F FORTY, RW GRAB, C HAGELBERG, R HAYWOOD, S JOST, B KASEMANN, M KELLNER, G KNOBLOCH, J LACOURT, A LEHRAUS, I LOHSE, T LUKE, D MARCHIORO, A MARTINEZ, M MAY, J MENARY, S MINTEN, A MIOTTO, A NASH, J PALAZZI, P RANJARD, F REDLINGER, G ROTH, A ROTHBERG, J ROTSCHEIDT, H VON RUDEN, W ST DENIS, R SCHLATTER, D TAKASHIMA, M TALBY, M TEJESSY, W WACHSMUTH, H WASSEBAECH, S WHEELER, S WIEDENMANN, W WITZELING, W WOTSCHACK, J AJALTOUNI, Z BARDADIN-OTWINOWSKA, M FALVARD, A EL FELLOUS, R GAY, P HARVEY, J HENRARD, P JOUSSET, J MICHEL, B MONTRET, JC PALLIN, D PERRET, P PRORIOL, J PRULHIERE, F STIMPFL, G HANSEN, JD HANSEN, JR HANSEN, PH MOLLERUD, R NIELSEN, ER NILSSON, BS EFTHYMIOPOULOS, I SIMOPOULOU, E VAYAKI, A BADIER, J BLONDEL, A BONNEAUD, G BOUROTTE, J BRAEMS, F BRIENT, JC FOUQUE, G GAMESS, A GUIRLET, R ROSOWSKY, A ROUGE, A RUMPF, M TANAKA, R VIDEAU, H CANDIN, DJ VEITCH, E PARRINI, G CORDEN, M GEORGIOPOULOS, C IKEDA, M LANNUTTI, J LEVINTHAL, D MERMIKIDES, M SAWYER, L ANTONELLI, A BALDINI, R BENCIVENNI, G BOLOGNA, G CAMPANA, P CAPON, G CHIARELLA, V D'ETTORRE-PIAZZOLI, B FELICI, G LAURELLI, P MANNOCCHI, G MASSIMO-BRANCACCIO, F MURTAS, F MURTAS, GP NICOLETTI, G PASSALACQUA, L PEPE-ALTARELLI, M PICCHI, P ZOGRAFOU, P ALTOON, B BOYLE, O HALLEY, AW TEN HAVE, I HEARNS, JL LYNCH, JG MORTON, WT RAINE, C SCARR, JM SMITH, K THOMPSON, AS TURNBULL, RM BRANDL, B BRAUN, O GEIGES, R GEWENIGER, C HANKE, P HEPP, V KLUGE, EE MAUMARY, Y PUTZER, A RENSCH, B STAHL, A TITTEL, K WUNSCH, M BELK, AT BEUSELINCK, R BINNIE, DM CAMERON, W CATTANEO, M DORNAN, PJ DUGEAY, S GREENE, AM HASSARD, JF LIESKE, NM PATTON, SJ PAYNE, DG PHILLIPS, MJ SEDGBEER, JK TAYLOR, G TOMALIN, IR WRIGHT, AG GIRTLER, P KUHN, D RUDOLPH, G BOWDERY, CK BRODBECK, TJ FINCH, AJ FOSTER, F HUGHES, G KEEMER, NR NUTTALL, M PATEL, A ROWLINGSON, BS SLOAN, T SNOW, SW WHELAN, EP BARCZEWSKI, T BAUERDICK, LAT KLEINKNECHT, K RENK, B ROEHN, S SANDER, HG SCHMELLING, M SCHMIDT, H STEEG, F ALBANESE, JP AUBERT, JJ BENCHOUK, C BERNARD, V BONISSENT, A COURVOISIER, D ETIENNE, F PAPALEXIOU, S PAYRE, P PIETRZYK, B QIAN, Z BLUM, W CATTANEO, P COWAN, G DEHNING, B DIETL, H FERNANDEZ-BOSMAN, M HANSL-KOZANECKA, T JAHN, A KOZANECKI, W LANGE, E LUTJENS, G LUTZ, G MANNER, W MOSER, HG PAN, Y RICHTER, R SCHRODER, J SCHWARZ, AS SETTLES, R STIERLIN, U THOMAS, J WOLF, G BERTIN, V DE BOUARD, G BOUCROT, J CALLOT, O CHEN, X CORDIER, A DAVIER, M GANIS, G GRIVAZ, JF HEUSSE, P JANOT, P JOURNE, V KIM, DW LEFRANCOIS, J LUTZ, AM VEILLET, JJ VIDEAU, I ZHANG, Z ZOMER, F AMENDOLIA, SR BAGLIESI, G BATIGNANI, G BOSISIO, L BOTTIGLI, U BRADASCHIA, C CARPINELLI, M CIOCCI, MA DELL'ORSO, R FERRANTE, I FIDECARO, F FOA, L FOCARDI, E FORTI, F GIASSI, A GIORGI, AM LIGABUE, F LUSIANI, A MANNELLI, EB MARROCHESI, PS MESSINEO, A MONETA, L PALLA, F SANGUINETTI, G STEINBERGER, J TENCHINI, R TONELLI, G TRIGGIANI, G VANNINI-CASTALDI, C VENTURI, A VERDINI, PG WALSH, J CARTER, JM GREEN, MG MARCH, PV MEDCALF, T QUAZI, IS SAICH, MR STRONG, JA THOMAS, RM WEST, LR WILDISH, T BOTTERILL, DR CLIFFT, RW EDGECOCK, TR EDWARDS, M FISCHER, SM JONES, TJ NORTON, PR SALMON DP THOMPSON, JC BLOCH-DEVAUX, B COLAS, P KLOPFENSTEIN, C LANCON, E LOCCI, E LOUCATOS, S MONNIER, E PEREZ, P PERRIER, F RANDER, J RENARDY, JF ROUSSARIE, A SCHULLER, JP SCHWINDLING, J ASHMAN, JG BOOTH, CN BUTTAR, C CARNEY, R CARTWRIGHT, S COMBLEY, F DINSDALE, M DOGRU, M HATFIELD, F MARTIN, J PARKER, D REEVES, P THOMPSON, LF BRANDT, S BURKHARDT, H GRUPEN, C MEINHARD, H MIRABITO, L NEUGEBAUER, E SCHAFER, U SEYWERD, H APOLLINARI, G GIANNINI, G GOBBO, B LIELLO, F ROLANDI, L STIEGLER, U BELLANTONI, L BOUDREAU, JF CINABRO, D CONWAY, JS COWEN, DF DEWEERD, AJ FENG, Z FERGUSON, DPS GAO, YS GRAHL, J HARTON, JI HILGART, J JACOBSEN, JE JARED, RC JOHNSON, RP LECLAIRE, BW PAN, YB PATER, JR SAADI, Y SHARMA, V WALSH, AM WEAR, JA WEBER, FV WHITNEY, MH WU, SL ZHOU, ZI ZOBERNIG, G AF DECAMP, D DESCHIZEAUX, B GOY, C LESS, JP MINARD, MN ALEMANY, R CRESPO, JM DELFINO, M FERNANDEZ, E GAITAN, V GARRIDO, L MATO, P MIQUEL, R MIR, LM ORTEU, S PACHECO, A PERLAS, JA TUBAU, E CATANESI, MG CREANZA, D DE PALMA, M FARILLA, A IASELLI, G MAGGI, G MAGGI, M NATALI, S NUZZO, S QUATTROMINI, M RANIERI, A RASO, G ROMANO, F RUGGIERI, F SELVAGGI, G SILVESTRIS, L TEMPESTA, P ZITO, G GAO, Y HU, H HUANG, D HUANG, X LIN, J LOU, J QIAO, C RUAN, T WANG, T XIE, Y XU, D XU, R ZHANG, J ZHAO, W ALBRECHT, H ATWOOD, WB BIRD, F BLUCHER, E BONVICINI, G BOSSI, F BROWN, D BURNETT, TH DREVERMANN, H DYDAK, F FORTY, RW GRAB, C HAGELBERG, R HAYWOOD, S JOST, B KASEMANN, M KELLNER, G KNOBLOCH, J LACOURT, A LEHRAUS, I LOHSE, T LUKE, D MARCHIORO, A MARTINEZ, M MAY, J MENARY, S MINTEN, A MIOTTO, A NASH, J PALAZZI, P RANJARD, F REDLINGER, G ROTH, A ROTHBERG, J ROTSCHEIDT, H VON RUDEN, W ST DENIS, R SCHLATTER, D TAKASHIMA, M TALBY, M TEJESSY, W WACHSMUTH, H WASSEBAECH, S WHEELER, S WIEDENMANN, W WITZELING, W WOTSCHACK, J AJALTOUNI, Z BARDADIN-OTWINOWSKA, M FALVARD, A EL FELLOUS, R GAY, P HARVEY, J HENRARD, P JOUSSET, J MICHEL, B MONTRET, JC PALLIN, D PERRET, P PRORIOL, J PRULHIERE, F STIMPFL, G HANSEN, JD HANSEN, JR HANSEN, PH MOLLERUD, R NIELSEN, ER NILSSON, BS EFTHYMIOPOULOS, I SIMOPOULOU, E VAYAKI, A BADIER, J BLONDEL, A BONNEAUD, G BOUROTTE, J BRAEMS, F BRIENT, JC FOUQUE, G GAMESS, A GUIRLET, R ROSOWSKY, A ROUGE, A RUMPF, M TANAKA, R VIDEAU, H CANDIN, DJ VEITCH, E PARRINI, G CORDEN, M GEORGIOPOULOS, C IKEDA, M LANNUTTI, J LEVINTHAL, D MERMIKIDES, M SAWYER, L ANTONELLI, A BALDINI, R BENCIVENNI, G BOLOGNA, G CAMPANA, P CAPON, G CHIARELLA, V D'ETTORRE-PIAZZOLI, B FELICI, G LAURELLI, P MANNOCCHI, G MASSIMO-BRANCACCIO, F MURTAS, F MURTAS, GP NICOLETTI, G PASSALACQUA, L PEPE-ALTARELLI, M PICCHI, P ZOGRAFOU, P ALTOON, B BOYLE, O HALLEY, AW TEN HAVE, I HEARNS, JL LYNCH, JG MORTON, WT RAINE, C SCARR, JM SMITH, K THOMPSON, AS TURNBULL, RM BRANDL, B BRAUN, O GEIGES, R GEWENIGER, C HANKE, P HEPP, V KLUGE, EE MAUMARY, Y PUTZER, A RENSCH, B STAHL, A TITTEL, K WUNSCH, M BELK, AT BEUSELINCK, R BINNIE, DM CAMERON, W CATTANEO, M DORNAN, PJ DUGEAY, S GREENE, AM HASSARD, JF LIESKE, NM PATTON, SJ PAYNE, DG PHILLIPS, MJ SEDGBEER, JK TAYLOR, G TOMALIN, IR WRIGHT, AG GIRTLER, P KUHN, D RUDOLPH, G BOWDERY, CK BRODBECK, TJ FINCH, AJ FOSTER, F HUGHES, G KEEMER, NR NUTTALL, M PATEL, A ROWLINGSON, BS SLOAN, T SNOW, SW WHELAN, EP BARCZEWSKI, T BAUERDICK, LAT KLEINKNECHT, K RENK, B ROEHN, S SANDER, HG SCHMELLING, M SCHMIDT, H STEEG, F ALBANESE, JP AUBERT, JJ BENCHOUK, C BERNARD, V BONISSENT, A COURVOISIER, D ETIENNE, F PAPALEXIOU, S PAYRE, P PIETRZYK, B QIAN, Z BLUM, W CATTANEO, P COWAN, G DEHNING, B DIETL, H FERNANDEZ-BOSMAN, M HANSL-KOZANECKA, T JAHN, A KOZANECKI, W LANGE, E LUTJENS, G LUTZ, G MANNER, W MOSER, HG PAN, Y RICHTER, R SCHRODER, J SCHWARZ, AS SETTLES, R STIERLIN, U THOMAS, J WOLF, G BERTIN, V DE BOUARD, G BOUCROT, J CALLOT, O CHEN, X CORDIER, A DAVIER, M GANIS, G GRIVAZ, JF HEUSSE, P JANOT, P JOURNE, V KIM, DW LEFRANCOIS, J LUTZ, AM VEILLET, JJ VIDEAU, I ZHANG, Z ZOMER, F AMENDOLIA, SR BAGLIESI, G BATIGNANI, G BOSISIO, L BOTTIGLI, U BRADASCHIA, C CARPINELLI, M CIOCCI, MA DELL'ORSO, R FERRANTE, I FIDECARO, F FOA, L FOCARDI, E FORTI, F GIASSI, A GIORGI, AM LIGABUE, F LUSIANI, A MANNELLI, EB MARROCHESI, PS MESSINEO, A MONETA, L PALLA, F SANGUINETTI, G STEINBERGER, J TENCHINI, R TONELLI, G TRIGGIANI, G VANNINI-CASTALDI, C VENTURI, A VERDINI, PG WALSH, J CARTER, JM GREEN, MG MARCH, PV MEDCALF, T QUAZI, IS SAICH, MR STRONG, JA THOMAS, RM WEST, LR WILDISH, T BOTTERILL, DR CLIFFT, RW EDGECOCK, TR EDWARDS, M FISCHER, SM JONES, TJ NORTON, PR SALMON DP THOMPSON, JC BLOCH-DEVAUX, B COLAS, P KLOPFENSTEIN, C LANCON, E LOCCI, E LOUCATOS, S MONNIER, E PEREZ, P PERRIER, F RANDER, J RENARDY, JF ROUSSARIE, A SCHULLER, JP SCHWINDLING, J ASHMAN, JG BOOTH, CN BUTTAR, C CARNEY, R CARTWRIGHT, S COMBLEY, F DINSDALE, M DOGRU, M HATFIELD, F MARTIN, J PARKER, D REEVES, P THOMPSON, LF BRANDT, S BURKHARDT, H GRUPEN, C MEINHARD, H MIRABITO, L NEUGEBAUER, E SCHAFER, U SEYWERD, H APOLLINARI, G GIANNINI, G GOBBO, B LIELLO, F ROLANDI, L STIEGLER, U BELLANTONI, L BOUDREAU, JF CINABRO, D CONWAY, JS COWEN, DF DEWEERD, AJ FENG, Z FERGUSON, DPS GAO, YS GRAHL, J HARTON, JI HILGART, J JACOBSEN, JE JARED, RC JOHNSON, RP LECLAIRE, BW PAN, YB PATER, JR SAADI, Y SHARMA, V WALSH, AM WEAR, JA WEBER, FV WHITNEY, MH WU, SL ZHOU, ZI ZOBERNIG, G CA ALEPH Collaboration TI MEASUREMENT OF B-BBAR MIXING AT THE Z SO PHYSICS LETTERS B LA English DT Article ID PROMPT ELECTRON PRODUCTION; E+E ANNIHILATION; HEAVY QUARKS; CP VIOLATION; ENERGY; FRAGMENTATION AB From more than 175 000 hadronic Z decays observed with the ALEPH detector at LEP, we select 823 events with pairs of leptons in the final state. From these we measure-chi, the probability that a b hadron which is observed to decay originated as a bBAR hadron. We find chi = 0.132(-0.026)+0.027. C1 CNRS, IN2P3, LAB PHYS PARTICULES, F-74019 ANNECY LE VIEUX, FRANCE. UNIV AUTONOMA BARCELONA, LAB FIS ALTAS ENERGIAS, E-08193 BARCELONA, SPAIN. IST NAZL FIS NUCL, SEZ BARI, I-70126 BARI, ITALY. IST NAZL FIS NUCL, DIPARTIMENTO FIS UNIV, I-70126 BARI, ITALY. ACAD SINICA, INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. UNIV BLAISE PASCAL, CNRS, IN2P3, LAB PHYS CORPUSCULAIRE, F-63177 AUBIERE, FRANCE. NIELS BOHR INST, DK-2100 COPENHAGEN, DENMARK. NUCL RES CTR DEMOKRITOS NRCD, ATHENS, GREECE. ECOLE POLYTECH, CNRS, IN2P3, LAB PHYS NUCL & HAUTES ENERGIES, F-91128 PALAISEAU, FRANCE. UNIV EDINBURGH, DEPT PHYS, EDINBURGH EH9 3JZ, ENGLAND. UNIV FIRENZE, DIPARTIMENTO FIS, I-50125 FLORENCE, ITALY. IST NAZL FIS NUCL, SEZ FIRENZE, I-50125 FLORENCE, ITALY. FLORIDA STATE UNIV, SUPERCOMP COMPUTAT RES INST, TALLAHASSEE, FL 32306 USA. FLORIDA STATE UNIV, DEPT PHYS, TALLAHASSEE, FL 32306 USA. IST NAZL FIS NUCL, LNF, I-00044 FRASCATI, ITALY. UNIV GLASGOW, DEPT PHYS & ASTRON, GLASGOW G12 8QQ, LANARK, SCOTLAND. UNIV HEIDELBERG, INST HOCHENERGIEPHYS, W-6900 HEIDELBERG, GERMANY. IMPERIAL COLL, DEPT PHYS, LONDON SW7 2BZ, ENGLAND. UNIV INNSBRUCK, INST EXPT PHYS, A-6020 INNSBRUCK, AUSTRIA. UNIV LANCASTER, DEPT PHYS, LANCASTER LA1 4YB, ENGLAND. UNIV MAINZ, INST PHYS, W-6500 MAINZ, GERMANY. CNRS, IN2P3, FAC SCI LUMINY, CTR PHYS PARTICULES, F-13288 MARSEILLE, FRANCE. WERNER HEISENBERG INST PHYS, MAX PLANCK INST PHYS & ASTROPHYS, W-8000 MUNICH, GERMANY. UNIV PARIS SUD, CNRS, IN2P3, LAB ACCELERATEUR LINEAIRE, F-91405 ORSAY, FRANCE. UNIV PISA, DIPARTIMENTO FIS, INFN, SEZ PISA, I-56010 PISA, ITALY. SCUOLA NORMALE SUPER, I-56010 PISA, ITALY. UNIV LONDON, ROYAL HOLLOWAY & BEDFORD NEW COLL, DEPT PHYS, SURREY TW20 0EX, ENGLAND. RUTHERFORD APPLETON LAB, PARTICLE PHYS DEPT, DIDCOT OX11 0QX, OXON, ENGLAND. CEN SACLAY, DEPT PHYS PARTICULES ELEMENTAIRES, F-91191 GIF SUR YVETTE, FRANCE. UNIV SHEFFIELD, DEPT PHYS, SHEFFIELD S3 7RH, ENGLAND. UNIV SIEGEN, FACHBEREICH PHYS, W-5900 SIEGEN, GERMANY. UNIV TRIESTE, DIPARTIMENTO FIS, I-34127 TRIESTE, ITALY. IST NAZL FIS NUCL, SEZ TRIESTE, I-34127 TRIESTE, ITALY. UNIV WISCONSIN, DEPT PHYS, MADISON, WI 53706 USA. DESY, W-2000 HAMBURG, GERMANY. UNIV TORINO, IST FIS GEN, TURIN, ITALY. CNR, IST COSMO GEOFIS, I-10133 TURIN, ITALY. LBL, Berkeley, CA 94720 USA. RP DECAMP, D (reprint author), CNRS, IN2P3, LAB PHYS PARTICULES, F-74019 ANNECY LE VIEUX, FRANCE. RI Venturi, Andrea/J-1877-2012; Perrier, Frederic/A-5953-2011; Rolandi, Luigi (Gigi)/E-8563-2013; Colas, Paul/F-2876-2013; Bosman, Martine/J-9917-2014; Fernandez, Enrique/L-5387-2014; Mir, Lluisa-Maria/G-7212-2015; ciocci, maria agnese /I-2153-2015; Lusiani, Alberto/N-2976-2015; Forti, Francesco/H-3035-2011; Lusiani, Alberto/A-3329-2016; Murtas, Fabrizio/B-5729-2012; Booth, Christopher/B-5263-2016; Delfino, Manuel/A-1545-2012; Pacheco Pages, Andres/C-5353-2011; Ferrante, Isidoro/F-1017-2012 OI Rolandi, Luigi (Gigi)/0000-0002-0635-274X; Bosman, Martine/0000-0002-7290-643X; Fernandez, Enrique/0000-0002-6405-9488; Mir, Lluisa-Maria/0000-0002-4276-715X; ciocci, maria agnese /0000-0003-0002-5462; Lusiani, Alberto/0000-0002-6876-3288; Forti, Francesco/0000-0001-6535-7965; Lusiani, Alberto/0000-0002-6876-3288; Booth, Christopher/0000-0002-6051-2847; Delfino, Manuel/0000-0002-9468-4751; Pacheco Pages, Andres/0000-0001-8210-1734; Ferrante, Isidoro/0000-0002-0083-7228 NR 31 TC 27 Z9 27 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD APR 4 PY 1991 VL 258 IS 1-2 BP 236 EP 246 DI 10.1016/0370-2693(91)91239-R PG 11 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA FH146 UT WOS:A1991FH14600042 ER PT J AU WILKINSON, AP CHEETHAM, AK COX, DE AF WILKINSON, AP CHEETHAM, AK COX, DE TI STUDY OF OXIDATION-STATE CONTRAST IN GALLIUM DICHLORIDE BY SYNCHROTRON X-RAY ANOMALOUS SCATTERING SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE LA English DT Article ID POWDER DIFFRACTION; RADIATION; ABSORPTION; CU; SAMARIUM; EDGE; ION; NI AB Synchrotron X-ray powder diffraction data have been collected on mixed-valence gallium dichloride, Ga(I)Ga(III)Cl4, at several wavelengths between 1.2481 and 1.1957 angstrom, the latter being very close to the Ga K edge. A significant difference in the f'(E) curves is observed between the Ga(I) and Ga(III) sites, within 10 eV of the edge. This result is consistent with an oxidation-state shift of up to 8 eV, with the Ga(I) edge at a lower energy, but may also reflect a difference in the forms of the f'(E) curves for Ga(I) and Ga(III) in the vicinity of the edge. C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP WILKINSON, AP (reprint author), UNIV OXFORD,CHEM CRYSTALLOG LAB,9 PARKS RD,OXFORD OX1 3PD,ENGLAND. RI Wilkinson, Angus/C-3408-2008 OI Wilkinson, Angus/0000-0003-2904-400X NR 36 TC 48 Z9 48 U1 0 U2 5 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 APR 1 PY 1991 VL 47 BP 155 EP 161 DI 10.1107/S0108768190010485 PN 2 PG 7 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA FH706 UT WOS:A1991FH70600002 ER PT J AU LARSON, EM ABNEY, KD LARSON, AC ELLER, PG AF LARSON, EM ABNEY, KD LARSON, AC ELLER, PG TI STRUCTURE OF OXONIUM HEXAFLUOROANTIMONATE(V) SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE LA English DT Article AB [H3O][SbF6], M(r) = 2038.09, cubic, I2(1)3, a = 10.120 (7) angstrom, V = 1036.43 angstrom3, Z = 8, D(x) = 3.265 g cm-3, lambda(Mo K-alpha-1) = 0.70930 angstrom, mu = 54.09 cm-1, F(000) = 928, T = 238 K, R = 0.059 and wR = 0.045 for 288 reflections with F(o) greater-than-or-equal-to 3-sigma(F(o)). Antimony lies at the center of a somewhat distorted octahedral array [F-Sb-F = 84.4 (3), 87.3 (3), 92.2 (4), 95.6 (4) and 171.3 (4)-degrees, with Sb-F = 1.891 (7) and 1.854 (9) angstrom] of F atoms. Three fluorines are connected to the O atoms through hydrogen bonds as indicated by the F-O distances of 2.622 (12) angstrom and the other three F atoms have F-O distances of 2.713 (10) angstrom. The six F atoms surrounding the oxygen form a squashed octahedron with F-O-F angles of 108.7 (5) and 109.2 (4)-degrees. C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. RP LARSON, EM (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,LIVERMORE,CA 94550, USA. NR 5 TC 10 Z9 10 U1 0 U2 1 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 APR 1 PY 1991 VL 47 BP 206 EP 209 DI 10.1107/S0108768190011806 PN 2 PG 4 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA FH706 UT WOS:A1991FH70600009 ER PT J AU MAGNIN, P MASON, JT TRIVEDI, R AF MAGNIN, P MASON, JT TRIVEDI, R TI GROWTH OF IRREGULAR EUTECTICS AND THE AL-SI SYSTEM SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID FE-C; ALLOYS; TEMPERATURE AB The directional solidification of the lamellar Al-Si eutectic alloy is studied experimentally. It is shown that the average undercoolings and spacings lie on the theoretical DELTA-T-LAMBDA-V curve, but not at the extremum point. The operating factor, phi, describing this departure from the extremum conditions is experimentally shown to be independent of the growth velocity. The minimum spacings observed in the irregular microstructure formed are shown to be higher than the extremum value. The results are compared with those previously obtained in the Fe-C and Fe-Fe3C alloys, the latter being shown to be an irregular eutectic despite the regularity of the microstructure formed. The theory of irregular eutectic growth is reexamined, based on the new model previously developed. A solution is obtained in the case of a non-isothermal s/l interface, which is identical to the isothermal solution if a weighted average undercooling is used. The effect of a kinetic undercooling term is studied, although it can usually be neglected even for irregular eutectics. It is shown that irregular eutectics grow with a nearly isothermal s/l interface, the different spacings observed in the microstructure being characterized by different growth rates. These rates oscillate locally around an average value, and significant departures from the steady-state conditions occur. The operating range is described by its average value (phi) and its extent (eta). It is shown experimentally that the latter is always very close to the value of the average spacing, independent of the phi-value. C1 IOWA STATE UNIV SCI & TECHNOL, US DOE, AMES LAB, AMES, IA 50011 USA. IOWA STATE UNIV SCI & TECHNOL, DEPT MAT SCI & ENGN, AMES, IA 50011 USA. NR 26 TC 83 Z9 89 U1 1 U2 16 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 APR PY 1991 VL 39 IS 4 BP 469 EP 480 DI 10.1016/0956-7151(91)90115-H PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA FC232 UT WOS:A1991FC23200005 ER PT J AU VITEK, JM DAVID, SA ALEXANDER, DJ KEISER Jr NANSTAD, RK AF VITEK, JM DAVID, SA ALEXANDER, DJ KEISER, JR NANSTAD, RK TI LOW-TEMPERATURE AGING BEHAVIOR OF TYPE-308 STAINLESS-STEEL WELD METAL SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID FERRITE; SOLIDIFICATION; DECOMPOSITION; EMBRITTLEMENT; CRACKING AB The aging behavior of welded type 308 stainless steel was evaluated by mechanical property testing and microstructural examination. Aging was carried out at 475-degrees-C for up to 20,000 h. The initial material consisted of austenite with approximately 10% ferrite. Upon aging, the ferrite hardness increased up to 100%. This hardening was accompanied by a noticeable increase in the ductile-brittle transition temperature and a drop in the upper shelf energy, as measured by Charpy impact tests, and a degradation in fracture toughness, as determined by J-integral tests. Tensile properties did not change significantly with aging. Microstructural analysis indicated that the ferrite decomposed spinodally into iron-rich alpha and chromium-enriched alpha'. In addition, abundant precipitation of nickel- and silicon-rich G-phase was found within the ferrite and M23C6 carbide formed along the austenite-ferrite interface. These effects are similar to the aging behavior of cast stainless steels. Occasionally, large G-phase or alpha precipitates were also found along the austenite-ferrite interface after aging more than 1000 h. After comparison of the mechanical property changes with the microstructural features, it was concluded that both spinodal decomposition as well as G-phase formation contribute to ferrite hardening. Spinodal decomposition results in embrittlement of the weld insofar as the ductile-brittle transition temperature is raised. G-phase formation and carbide precipitation are associated with a degradation in the ductile fracture properties, as shown by a drop in the upper shelf energy and a decrease in the fracture toughness. RP VITEK, JM (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, OAK RIDGE, TN 37831 USA. NR 39 TC 68 Z9 69 U1 1 U2 15 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 APR PY 1991 VL 39 IS 4 BP 503 EP 516 DI 10.1016/0956-7151(91)90118-K PG 14 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA FC232 UT WOS:A1991FC23200008 ER PT J AU HOYT, JJ SPOONER, S AF HOYT, JJ SPOONER, S TI THE SURFACE-ENERGY OF METASTABLE AL3LI PRECIPITATES FROM COARSENING KINETICS SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID AL-LI ALLOYS; PARTICLE DIFFUSION PROBLEM; VOLUME FRACTION; OSTWALD; SCATTERING; SOLUBILITY; GROWTH AB Small angle X-ray scattering has been used to measure the coarsening kinetics of metastable Al3Li precipitates in a dilute Al-Li binary alloy. The results are compared to prevous transmission electron microscopy studies of similar alloys. Lifschitz-Slyozov-Wagner coarsening theory was invoked as a means of obtaining the alpha-/Al3Li interfacial energy. However, corrections accounting for effects due to finite volume fractions and limited solubility of Li in the precipitate phase are included. The surface energy was found to be approximately 0.005 J/m2, significantly less than previously reported. A possible explanation for the discrepancy is discussed. C1 OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37831 USA. RP HOYT, JJ (reprint author), OAK RIDGE NATL LAB, DEPT MECH & MAT ENGN, OAK RIDGE, TN 37831 USA. NR 31 TC 21 Z9 21 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 APR PY 1991 VL 39 IS 4 BP 689 EP 693 DI 10.1016/0956-7151(91)90137-P PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA FC232 UT WOS:A1991FC23200027 ER PT J AU BALDOCCHI, DD LUXMOORE, RJ HATFIELD, JL AF BALDOCCHI, DD LUXMOORE, RJ HATFIELD, JL TI DISCERNING THE FOREST FROM THE TREES - AN ESSAY ON SCALING CANOPY STOMATAL CONDUCTANCE SO AGRICULTURAL AND FOREST METEOROLOGY LA English DT Review ID EDDY-CORRELATION MEASUREMENTS; ENERGY-BALANCE EQUATION; SURFACE-TEMPERATURE; DECIDUOUS FOREST; SENSIBLE HEAT; WATER-VAPOR; CARBON-DIOXIDE; WHEAT CANOPY; LATENT-HEAT; SOIL-WATER AB Stomata are major conduits for the diffusion of many trace gases between leaves and the atmosphere. The role of the stomata in controlling gas exchange between the terrestrial biosphere and the atmosphere at the landscape, meso- and global scales has only recently been appreciated. Further advances in modeling trace gas exchange will depend on our ability to provide realistic information on stomatal mechanics at the sub-grid scale of landscape and meso scale models; in other words, information is needed at the canopy scale. This paper describes two approaches for estimating canopy stomatal conductance. These are the 'bottom-up' and 'top-down' scaling methods. The bottom-up method entails computing canopy stomatal conductance by integrating the response of individual leaves to controling biotic and abiotic factors, which are determined by the micrometeorology of the canopy. The top-down approach entails inverting a descriptive stand-level, trace gas exchange model to estimate canopy stomatal conductance. The model is driven with abiotic variables measured at a reference point above the canopy. The strengths and weaknesses of these two approaches are discussed, and recommendations for future research are presented. C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. USDA ARS,NATL SOIL TILTH LAB,AMES,IA 50011. RP BALDOCCHI, DD (reprint author), NOAA,ARL,DIV ATMOSPHER TURBULENCE & DIFFUS,POB 2456,OAK RIDGE,TN 37831, USA. RI Baldocchi, Dennis/A-1625-2009 OI Baldocchi, Dennis/0000-0003-3496-4919 NR 126 TC 115 Z9 116 U1 0 U2 19 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-1923 J9 AGR FOREST METEOROL JI Agric. For. Meteorol. PD APR PY 1991 VL 54 IS 2-4 BP 197 EP 226 DI 10.1016/0168-1923(91)90006-C PG 30 WC Agronomy; Forestry; Meteorology & Atmospheric Sciences SC Agriculture; Forestry; Meteorology & Atmospheric Sciences GA FP090 UT WOS:A1991FP09000006 ER PT J AU GROSSER, KA ERICKSON, KL CARBONELL, RG AF GROSSER, KA ERICKSON, KL CARBONELL, RG TI ENHANCED DISPERSION RESULTING FROM SOLUTE EXCHANGE BETWEEN PHASES SO AICHE JOURNAL LA English DT Article ID INVERSE GAS-CHROMATOGRAPHY; DIFFUSION; POLYMERS; TRANSPORT; TUBES AB The enhanced dispersion resulting from solute exchange between phases was investigated experimentally for the case of a long, cylindrical capillary tube, in which a stationary absorbing phase formed a thin annular film around a flowing fluid. Solute diffusion into the stationary phase was analyzed in detail to accurately determine the coupling of film diffusion and hydrodynamic effects. The experimental results and analyses showed an increase in dispersion relative to the usual Taylor effect. The increased dispersion was a function of the relative partitioning of solute between phases and was in quantitative agreement with predictions from previously published theoretical studies. C1 SANDIA NATL LABS,DEPT FLUID & THERMAL SCI,ALBUQUERQUE,NM 87185. N CAROLINA STATE UNIV,DEPT CHEM ENGN,RALEIGH,NC 27695. NR 30 TC 4 Z9 4 U1 0 U2 2 PU AMER INST CHEMICAL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0001-1541 J9 AICHE J JI AICHE J. PD APR PY 1991 VL 37 IS 4 BP 512 EP 526 DI 10.1002/aic.690370405 PG 15 WC Engineering, Chemical SC Engineering GA FJ416 UT WOS:A1991FJ41600004 ER PT J AU EAGAN, RJ AF EAGAN, RJ TI SHAPING PUBLIC-POLICY SO AMERICAN CERAMIC SOCIETY BULLETIN LA English DT Editorial Material RP EAGAN, RJ (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7812 J9 AM CERAM SOC BULL JI Am. Ceram. Soc. Bull. PD APR PY 1991 VL 70 IS 4 BP 627 EP 627 PG 1 WC Materials Science, Ceramics SC Materials Science GA FG191 UT WOS:A1991FG19100001 ER PT J AU DORRIS, SE DUSEK, JT LANAGAN, MT PICCIOLO, JJ SINGH, JP CREECH, JE POEPPEL, RB AF DORRIS, SE DUSEK, JT LANAGAN, MT PICCIOLO, JJ SINGH, JP CREECH, JE POEPPEL, RB TI EXTRUSION OF MULTILAYER SUPERCONDUCTOR COILS SO AMERICAN CERAMIC SOCIETY BULLETIN LA English DT Article ID Y2BACUO5 RP DORRIS, SE (reprint author), ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439, USA. NR 12 TC 6 Z9 6 U1 0 U2 0 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7812 J9 AM CERAM SOC BULL JI Am. Ceram. Soc. Bull. PD APR PY 1991 VL 70 IS 4 BP 722 EP 726 PG 5 WC Materials Science, Ceramics SC Materials Science GA FG191 UT WOS:A1991FG19100014 ER PT J AU RAGLAND, KE SELVIN, S MERRILL, DW AF RAGLAND, KE SELVIN, S MERRILL, DW TI BLACK-WHITE DIFFERENCES IN STAGE-SPECIFIC CANCER SURVIVAL - ANALYSIS OF 7 SELECTED SITES SO AMERICAN JOURNAL OF EPIDEMIOLOGY LA English DT Article DE BLACKS; BLADDER NEOPLASMS; BREAST NEOPLASMS; CERVIX NEOPLASMS; COLORECTAL NEOPLASMS; PROSTATIC NEOPLASMS; UTERINE NEOPLASMS; WHITES ID BREAST-CANCER; SOCIOECONOMIC-STATUS; RACIAL-DIFFERENCES; RACE; DIAGNOSIS; WOMEN AB A number of reserachers have noted that the black population in the United States generally has less favorable cancer survival than does the white population. It is not clear, however, whether this difference is fully explained by differences in stage of disease at diagnosis. This study uses Surveillance, Epidemiology, and End Results program data from the San Francisco-Oakland (California) Metropolitan Statistical Area for the years 1974-1985 to study survival differences between blacks and whites while controlling for both stage and age at diagnosis. The cancer sites examined are those for which mortality is considered avoidable by early detection and treatment, namely the colon, rectum, bladder, breast, cervix, uterine corpus, and prostate. Stage-specific (local, regional, and remote) survival curves are examined for each cancer site. The site- and stage-specific curves for colon, male rectal, and prostate cancer, supplemented by proportional hazards analyses, indicate no significant stage-specific racial differentials. Stage-specific survival differentials persist for male bladder, female rectal, and breast cancer. The relation between race and stage is more complex for female bladder, cervical, and uterine corpus cancer; for these sites, there is a racial difference at some stages but not all. The consequences for secondary intervention programs are considered for the seven sites in light of these findings. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,COMP SCI RES DEPT,BERKELEY,CA 94720. RP RAGLAND, KE (reprint author), UNIV CALIF BERKELEY,SCH PUBL HLTH,DEPT BIOMED & ENVIRONM HLTH SCI,EARL WARREN HALL,BERKELEY,CA 94720, USA. FU NCI NIH HHS [5 R18 CA42061, N01-CN-05224] NR 26 TC 68 Z9 68 U1 2 U2 2 PU AMER J EPIDEMIOLOGY PI BALTIMORE PA 624 N BROADWAY RM 225, BALTIMORE, MD 21205 SN 0002-9262 J9 AM J EPIDEMIOL JI Am. J. Epidemiol. PD APR 1 PY 1991 VL 133 IS 7 BP 672 EP 682 PG 11 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA FH916 UT WOS:A1991FH91600004 PM 2018022 ER PT J AU VOLKOW, ND TANCREDI, LR AF VOLKOW, ND TANCREDI, LR TI BIOLOGICAL CORRELATES OF MENTAL ACTIVITY STUDIED WITH PET SO AMERICAN JOURNAL OF PSYCHIATRY LA English DT Article ID CEREBELLAR GLUCOSE-METABOLISM; CEREBRAL BLOOD-FLOW; VISUAL-STIMULATION; BRAIN; CORTEX; DIASCHISIS; TOMOGRAPHY; RAT AB The development of newer imaging techniques that allow direct investigation of the function of the human brain under normal and pathological conditions has affected the way in which we conceive of the mind/brain relation. In this report the authors use examples from findings obtained with positron emission tomography (PET) to illustrate the highly interactive organization of the brain. Because operations in the brain require the participation of various brain areas, a model that does not require a one-to-one relationship between the physical and mental, but rather allows an association between clusters of physical processes and one or more mental phenomena, may reflect better the relation between physical brain phenomena and mental activities. C1 UNIV TEXAS,SCH PUBL HLTH,HLTH LAW PROGRAM,HOUSTON,TX 77025. RP VOLKOW, ND (reprint author), BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973, USA. NR 41 TC 24 Z9 24 U1 1 U2 1 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0002-953X J9 AM J PSYCHIAT JI Am. J. Psychiat. PD APR PY 1991 VL 148 IS 4 BP 439 EP 443 PG 5 WC Psychiatry SC Psychiatry GA FD906 UT WOS:A1991FD90600004 PM 2006687 ER PT J AU VALK, PE DILLON, WP AF VALK, PE DILLON, WP TI RADIATION-INJURY OF THE BRAIN SO AMERICAN JOURNAL OF ROENTGENOLOGY LA English DT Article ID CENTRAL NERVOUS-SYSTEM; POSITRON EMISSION TOMOGRAPHY; PROPHYLACTIC CRANIAL IRRADIATION; ACUTE LYMPHOCYTIC-LEUKEMIA; WHITE-MATTER LESIONS; CELL LUNG-CANCER; MAGNETIC-RESONANCE; CHILDHOOD LEUKEMIA; F-18 FLUORODEOXYGLUCOSE; COMPUTED-TOMOGRAPHY AB The clinical, radiologic, and pathologic findings in radiation injury of the brain are reviewed. Late radiation injury is the major, dose-limiting complication of brain irradiation and occurs in two forms, focal and diffuse, which differ significantly in clinical and radiologic features. Focal and diffuse injuries both include a wide spectrum of abnormalities, from subclinical changes detectable only by MR imaging to overt brain necrosis. Asymptomatic focal edema is commonly seen on CT and MR following focal or large-volume irradiation. Focal necrosis has the CT and MR characteristics of a mass lesion, with clinical evidence of focal neurologic abnormality and raised intracranial pressure. Microscopically, the lesion shows characteristic vascular changes and white matter pathology ranging from demyelination to coagulative necrosis. Diffuse radiation injury is characterized by periventricular decrease in attenuation on CT and increased signal on proton-density and T2-weighted MR images. Most patients are asymptomatic. When clinical manifestations occur, impairment of mental function is the most prominent feature. Pathologic findings in focal and diffuse radiation necrosis are similar. Necrotizing leukoencephalopathy is the form of diffuse white matter injury that follows chemotherapy, with or without irradiation. Vascular disease is less prominent and the latent period is shorter than in diffuse radiation injury; radiologic findings and clinical manifestations are similar. Late radiation injury of large arteries is an occasional cause of postradiation cerebral injury, and cerebral atrophy and mineralizing microangiopathy are common radiologic findings of uncertain clinical significance. Functional imaging by positron emission tomography can differentiate recurrent tumor from focal radiation necrosis with positive and negative predictive values for tumor of 80-90%. Positron emission tomography of the blood-brain barrier, glucose metabolism, and blood flow, together with MR imaging, have demonstrated some of the pathophysiology of late radiation necrosis. Focal glucose hypometabolism on positron emission tomography in irradiated patients may have prognostic significance for subsequent development of clinically evident radiation necrosis. C1 UNIV CALIF SAN FRANCISCO,SCH MED,DEPT RADIOL,SAN FRANCISCO,CA 94143. RP VALK, PE (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV RES MED & RADIAT BIOPHYS,MAIL STOP 55-121,BERKELEY,CA 94720, USA. NR 90 TC 35 Z9 35 U1 0 U2 3 PU AMER ROENTGEN RAY SOC PI RESTON PA 1891 PRESTON WHITE DR SUBSCRIPTION FULFILLMENT, RESTON, VA 22091 SN 0361-803X J9 AM J ROENTGENOL JI Am. J. Roentgenol. PD APR PY 1991 VL 156 IS 4 BP 689 EP 706 PG 18 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA FC830 UT WOS:A1991FC83000003 ER PT J AU METROPOLIS, N ROTA, GC AF METROPOLIS, N ROTA, GC TI SYMMETRY CLASSES - FUNCTIONS OF 3 VARIABLES SO AMERICAN MATHEMATICAL MONTHLY LA English DT Note C1 MIT,DEPT MATH,CAMBRIDGE,MA 02139. RP METROPOLIS, N (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 6 TC 5 Z9 5 U1 0 U2 0 PU MATHEMATICAL ASSOC AMER PI WASHINGTON PA 1529 18TH STREET NW, WASHINGTON, DC 20036 SN 0002-9890 J9 AM MATH MON JI Am. Math. Mon. PD APR PY 1991 VL 98 IS 4 BP 328 EP 332 DI 10.2307/2323800 PG 5 WC Mathematics SC Mathematics GA FF096 UT WOS:A1991FF09600003 ER PT J AU FRAZER, NB GIBBONS, JW GREENE, JL AF FRAZER, NB GIBBONS, JW GREENE, JL TI GROWTH, SURVIVORSHIP AND LONGEVITY OF PAINTED TURTLES CHRYSEMYS-PICTA IN A SOUTHWESTERN MICHIGAN MARSH SO AMERICAN MIDLAND NATURALIST LA English DT Article ID CHELONIA-MYDAS; EVOLUTIONARY; DEMOGRAPHY; SCRIPTA; PROXIMATE; RATES; GREEN; FOOD; LONG AB This paper reports results of a mark-recapture study of painted turtles inhabiting a marsh in Kalamazoo County, Michigan, first begun in 1964-1966 and continued intermittently from 1980-1989. The relationship between plastron length (PL) and age (t) was described by von Bertalanffy growth equations for males PL = 111.8(1 - 0.792e-0.184t) and females PL = 152.2(1 - 0.852e-0.128t). Annual survivorship of males and females (greater-than-or-equal-to 6 yr old) was estimated as 0.64-0.83 and 0.29-0.50, respectively. Annual survivorship of juveniles (< 6 yr old) was 0.21-0.51. Based on estimated minimum ages of individuals first captured as adults in the 1960s and recaptured in the 1980s, the four oldest males were 31 and the oldest female was 34 yr old. The oldest known-age male and female were 21 yr and 15 yr old, respectively. A comparison of data from the 1960s with that gathered in the 1980s revealed that the growth rates of juveniles and the density of turtles in the marsh have increased, while survival rates have apparently decreased. We speculate that the enhanced growth rates and population density are the result of warmer and drier weather during the 1980s. C1 SAVANNAH RIVER ECOL LAB, AIKEN, SC 29802 USA. RP FRAZER, NB (reprint author), MERCER UNIV, DEPT BIOL, MACON, GA 31207 USA. NR 48 TC 36 Z9 37 U1 2 U2 15 PU AMER MIDLAND NATURALIST PI NOTRE DAME PA UNIV NOTRE DAME, BOX 369, ROOM 295 GLSC, NOTRE DAME, IN 46556 USA SN 0003-0031 J9 AM MIDL NAT JI Am. Midl. Nat. PD APR PY 1991 VL 125 IS 2 BP 245 EP 258 DI 10.2307/2426229 PG 14 WC Biodiversity Conservation; Ecology SC Biodiversity & Conservation; Environmental Sciences & Ecology GA FP088 UT WOS:A1991FP08800010 ER PT J AU RIBEIRO, EA SUTHERLAND, JC AF RIBEIRO, EA SUTHERLAND, JC TI QUANTITATIVE GEL-ELECTROPHORESIS OF DNA - RESOLUTION OF OVERLAPPING BANDS OF RESTRICTION ENDONUCLEASE DIGESTS SO ANALYTICAL BIOCHEMISTRY LA English DT Article ID ETHIDIUM-BROMIDE; STRAND BREAKS; AGAROSE GELS; FLUORESCENCE; LENGTH C1 BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973. FU NHGRI NIH HHS [HG00371] NR 13 TC 9 Z9 9 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0003-2697 J9 ANAL BIOCHEM JI Anal. Biochem. PD APR PY 1991 VL 194 IS 1 BP 174 EP 184 DI 10.1016/0003-2697(91)90165-P PG 11 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA FE430 UT WOS:A1991FE43000023 PM 1651063 ER PT J AU HALE, PD BOGUSLAVSKY, LI INAGAKI, T KARAN, HI LEE, HS SKOTHEIM, TA OKAMOTO, Y AF HALE, PD BOGUSLAVSKY, LI INAGAKI, T KARAN, HI LEE, HS SKOTHEIM, TA OKAMOTO, Y TI AMPEROMETRIC GLUCOSE BIOSENSORS BASED ON REDOX POLYMER-MEDIATED ELECTRON-TRANSFER SO ANALYTICAL CHEMISTRY LA English DT Article ID CHEMICALLY MODIFIED ENZYMES; CARBON PASTE ELECTRODE; MODIFIED GRAPHITE; METAL-ELECTRODES; OXIDASE; FERROCENE; COMMUNICATION; OXIDATION; BENZOQUINONE; RELAYS AB Electrical communication between the flavin adenine dinucleotide redox centers of glucose oxidase and a conventional carbon paste electrode has been achieved by using electron-transfer relay systems based on polysiloxanes. Six materials for amperometric blosensors are described in which ferrocene and dimethylferrocene electron relays are covalently attached to insoluble siloxane polymers. Sensors containing these polymeric relay systems and glucose oxidase respond rapidly to glucose, with steady-state current responses achieved in less than 10 s. The response to glucose under N2 saturation shows apparent Michaelis-Menten constants, K(M)app, in the range 16-71 mM and limiting current densities, j(max), of 29-275-mu-A/cm2. The dependence of the sensor response on the nature of the siloxane polymer and the type of polymer-bound relay is discussed. C1 CUNY MEDGAR EVERS COLL,DIV NAT SCI & MATH,BROOKLYN,NY 11225. BROOKHAVEN NATL LAB,DIV MAT SCI,DEPT APPL SCI,UPTON,NY 11973. POLYTECH INST NEW YORK,DEPT CHEM,BROOKLYN,NY 11201. NR 34 TC 208 Z9 208 U1 2 U2 18 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1991 VL 63 IS 7 BP 677 EP 682 DI 10.1021/ac00007a006 PG 6 WC Chemistry, Analytical SC Chemistry GA FD917 UT WOS:A1991FD91700010 ER PT J AU OLTHOFF, JK VANBRUNT, RJ HERRON, JT SAUERS, I AF OLTHOFF, JK VANBRUNT, RJ HERRON, JT SAUERS, I TI DETECTION OF TRACE DISULFUR DECAFLUORIDE IN SULFUR-HEXAFLUORIDE BY GAS-CHROMATOGRAPHY MASS-SPECTROMETRY SO ANALYTICAL CHEMISTRY LA English DT Article ID CYTO-TOXIC ACTIVITY; S2F10; SF6; PHASE; SOF2 AB A new method is described for detection of S2F10 in SF6 in the parts-per-billion (ppb) level. The method utilizes a gas chromatograph/mass spectrometer (GC/MS) equipped with a heated jet separator. S2F10 is converted to SOF2 on the hot surfaces of the low-pressure portions of the jet separator at temperatures above 150-degrees-C by a surface-catalyzed reaction involving H2O. As a consequence of this conversion, peaks corresponding to S2F10 appear on single-ion chromatograms at ion masses characteristic of SOF2 (m/z = 48, 67, and 86) where there is little or no interference from SF6 features. By this method, a direct analysis of SF6 for S2F10 content can be performed with greater sensitivity than conventional gas chromatographic methods and with a higher degree of reliability and in a time much shorter than required for chromatographic methods that use enrichment procedures. Problems associated with the preparation and stability of reliable S2F10 reference samples are discussed. C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. RP OLTHOFF, JK (reprint author), NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899, USA. NR 30 TC 16 Z9 17 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1991 VL 63 IS 7 BP 726 EP 732 DI 10.1021/ac00007a015 PG 7 WC Chemistry, Analytical SC Chemistry GA FD917 UT WOS:A1991FD91700019 ER PT J AU DONOHUE, DL PETEK, M AF DONOHUE, DL PETEK, M TI ISOTOPIC MEASUREMENTS OF PALLADIUM METAL CONTAINING PROTIUM AND DEUTERIUM BY GLOW-DISCHARGE MASS-SPECTROMETRY SO ANALYTICAL CHEMISTRY LA English DT Article AB A glow discharge mass spectrometer was used for making isotopic measurements of palladium in samples that had been charged electrolytically with protium and deuterium. The accuracy of the measured isotopic abundances was adversely affected by interferences from molecular ion species containing palladium bound to one or more protium or deuterium atoms. The details of this molecular ion formation process were studied by comparing mass spectra from samples prepared under various conditions. This study demonstrates an as yet unexploited capability of glow discharge mass spectrometry for making isotope ratio measurements with precision better than 0.1% RSD. The high mass resolution capability of this instrument was also used to investigate the effects of hydride ion interference. RP DONOHUE, DL (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 7 TC 21 Z9 22 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1991 VL 63 IS 7 BP 740 EP 744 DI 10.1021/ac00007a017 PG 5 WC Chemistry, Analytical SC Chemistry GA FD917 UT WOS:A1991FD91700021 ER PT J AU CHAN, KC KOUTNY, LB YEUNG, ES AF CHAN, KC KOUTNY, LB YEUNG, ES TI ONLINE DETECTION OF DNA IN GEL-ELECTROPHORESIS BY ULTRAVIOLET-ABSORPTION UTILIZING A CHARGE-COUPLED DEVICE IMAGING-SYSTEM SO ANALYTICAL CHEMISTRY LA English DT Note ID POLYACRYLAMIDE GELS; SEPARATION; FRAGMENTS; PROTEINS C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 19 TC 21 Z9 21 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1991 VL 63 IS 7 BP 746 EP 750 DI 10.1021/ac00007a019 PG 5 WC Chemistry, Analytical SC Chemistry GA FD917 UT WOS:A1991FD91700023 PM 2053705 ER PT J AU SUDARSKY, D FISCHBACH, E TALMADGE, C ARONSON, SH CHENG, HY AF SUDARSKY, D FISCHBACH, E TALMADGE, C ARONSON, SH CHENG, HY TI EFFECTS OF EXTERNAL FIELDS ON THE NEUTRAL KAON SYSTEM SO ANNALS OF PHYSICS LA English DT Article ID FUNDAMENTAL PARAMETERS; EOTVOS EXPERIMENT; HIGHER DIMENSIONS; RANGE FORCES; GRAVITY; HYPERPHOTONS; WEAKER; DECAYS; CONSTRAINTS; MOMENTUM C1 BROOKHAVEN NATL LAB, DEPT PHYS, UPTON, NY 11973 USA. ACAD SINICA, INST PHYS, TAIPEI 115, TAIWAN. RP SUDARSKY, D (reprint author), PURDUE UNIV, DEPT PHYS, W LAFAYETTE, IN 47906 USA. NR 60 TC 12 Z9 12 U1 0 U2 1 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0003-4916 J9 ANN PHYS-NEW YORK JI Ann. Phys. PD APR PY 1991 VL 207 IS 1 BP 103 EP 139 DI 10.1016/0003-4916(91)90181-7 PG 37 WC Physics, Multidisciplinary SC Physics GA FG299 UT WOS:A1991FG29900006 ER PT J AU PHELPS, TJ MALACHOWSKY, K SCHRAM, RM WHITE, DC AF PHELPS, TJ MALACHOWSKY, K SCHRAM, RM WHITE, DC TI AEROBIC MINERALIZATION OF VINYL-CHLORIDE BY A BACTERIUM OF THE ORDER ACTINOMYCETALES SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Note ID METHANOGENIC CONDITIONS; CHLORINATED ETHENES; TRICHLOROETHYLENE; DEGRADATION; TETRACHLOROETHYLENE AB A gram-positive branched bacterium isolated from a trichloroethylene-degrading consortium mineralized vinyl chloride in growing cultures and cell suspensions. Greater than 67% of the [1,2-C-14]vinyl chlorides was mineralized to carbon dioxide, with approximately 10% of the radioactivity appearing in cell biomass and another 10% appearing in C-14-aqueous-phase products. C1 UNIV TENNESSEE,DEPT MICROBIOL,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. RP PHELPS, TJ (reprint author), UNIV TENNESSEE,INST APPL MICROBIOL,KNOXVILLE,TN 37932, USA. RI phelps, tommy/A-5244-2011 NR 15 TC 25 Z9 26 U1 1 U2 3 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 APR PY 1991 VL 57 IS 4 BP 1252 EP 1254 PG 3 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA FF039 UT WOS:A1991FF03900059 PM 1905522 ER PT J AU GOURLEY, PL DAWSON, LR BRENNAN, TM HAMMONS, BE STOVER, JC SCHAUS, CF SUN, S AF GOURLEY, PL DAWSON, LR BRENNAN, TM HAMMONS, BE STOVER, JC SCHAUS, CF SUN, S TI OPTICAL SCATTER IN EPITAXIAL SEMICONDUCTOR MULTILAYERS SO APPLIED PHYSICS LETTERS LA English DT Article ID GAAS AB We report measurements of optical scatter in epitaxial semiconductor multilayer structures. The structures comprise quarter-wave layers of Al0.2Ga0.8As/AlAs and GaAs/AlAs grown by molecular beam epitaxy and Al0.2Ga0.8As/AlAs grown by metalorganic chemical vapor deposition to assess differences due to growth technique and layer composition. The bidirectional reflective distribution function (BRDF) is measured at a wavelength of 835 nm corresponding closely to the Bragg reflection condition of the multilayer. The BRDF measurement yields calculated values for the total integrated scatter and effective surface roughness. The former is in the range 7 X 10(-4)-5 X 10(-3) while the latter is typically 3-16 angstrom over the spatial frequency range 3 X 10-(2)-1-mu-m-1. Both growth techniques yield comparable scatter loss on average, but there are significant differences in microscopic surface morphology, uniformity of scatter across the wafer, and lower limits of scatter. The measurements have significant implications for applications such as surface-emitting laser technology. C1 TMA TECHNOL INC,BOZEMAN,MT 59715. UNIV NEW MEXICO,DEPT ELECT & COMP ENGN,ALBUQUERQUE,NM 87131. UNIV NEW MEXICO,CTR HIGH TECHNOL MAT,ALBUQUERQUE,NM 87131. RP GOURLEY, PL (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 12 TC 0 Z9 0 U1 2 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 APR 1 PY 1991 VL 58 IS 13 BP 1360 EP 1362 DI 10.1063/1.104308 PG 3 WC Physics, Applied SC Physics GA FE378 UT WOS:A1991FE37800003 ER PT J AU BROWN, IG GODECHOT, X YU, KM AF BROWN, IG GODECHOT, X YU, KM TI NOVEL METAL-ION SURFACE MODIFICATION TECHNIQUE SO APPLIED PHYSICS LETTERS LA English DT Article ID IMPLANTATION AB We describe a method for applying metal ions to the near-surface region of solid materials. The added species can be energetically implanted below the surface or built up as a surface film with an atomically mixed interface with the substrate; the metal ion species can be the same as the substrate species or different from it, and more than one kind of metal species can be applied, either simultaneously or sequentially. Surface structures can be fabricated, including coatings and thin films of single metals, tailored alloys, or metallic multilayers, and they can be implanted or added onto the surface and ion beam mixed. We report two simple demonstrations of the method: implantation of yttrium into a silicon substrate at a mean energy of 70 keV and a dose of 1 X 10(16) atoms/cm2, and the formation of a titanium-yttrium multilayer structure with ion beam mixing to the substrate. RP BROWN, IG (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. RI Yu, Kin Man/J-1399-2012 OI Yu, Kin Man/0000-0003-1350-9642 NR 17 TC 109 Z9 117 U1 0 U2 4 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 APR 1 PY 1991 VL 58 IS 13 BP 1392 EP 1394 DI 10.1063/1.104318 PG 3 WC Physics, Applied SC Physics GA FE378 UT WOS:A1991FE37800014 ER PT J AU WU, IC BEEMAN, JW LUKE, PN HANSEN, WL HALLER, EE AF WU, IC BEEMAN, JW LUKE, PN HANSEN, WL HALLER, EE TI ION-IMPLANTED EXTRINSIC GE PHOTODETECTORS WITH EXTENDED CUTOFF WAVELENGTH SO APPLIED PHYSICS LETTERS LA English DT Article ID INFRARED DETECTORS; GERMANIUM; BORON AB Far-infrared properties of a two-layer structure consisting of an ion-implantation doped layer on a thin ultrapure slice of germanium have been studied. Photoresponse extends beyond the shallow impurity absorption edge at 120-mu-m to about 192-mu-m. Photoconductivity studies have been performed between 4.2 and 1.3 K. Detectors with an area of 1 x 1 mm2 have dark currents of less than 100 electrons/s at temperatures less-than-or-equal-to 1.3 K at a bias of 70 mV. A responsivity of 0.9 A/W and a noise equivalent power of 5 x 10(-16) W/Hz1/2 have been measured using photons in a narrow band 99 +/- 0.5-mu-m. C1 UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720. RP WU, IC (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 16 TC 21 Z9 22 U1 3 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 APR 1 PY 1991 VL 58 IS 13 BP 1431 EP 1433 DI 10.1063/1.105189 PG 3 WC Physics, Applied SC Physics GA FE378 UT WOS:A1991FE37800027 ER PT J AU ZUREK, WH AF ZUREK, WH TI RADIATION-INDUCED REVERSAL OF BARYONIC PERTURBATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMOLOGY; DARK MATTER ID DARK MATTER; GALAXIES; FLUCTUATIONS; CLUSTERS; ORIGIN AB In the context of the cold dark matter (CDM) cosmology it is natural to assume that the first generation of luminous objects formed at redshifts 30 less-than-or-approximately z less-than-or-approximately 100. On galactic scales, their distribution-and, therefore, the distribution of luminosity-was presumably approximately given by a "biased" density field. If the luminous input of these objects was significant (a fraction of the energetic content of the microwave background), radiative push could have moved the bulk of the baryons into the minima of the dark matter distribution, thus creating baryon-rich seeds for the structure on galactic and larger scales. Moreover, on the scales on which such reversal of baryonic perturbations happens, power in the combined (baryons + dark matter) spectrum of density perturbations would be smaller than in the CDM universe with the same normalization on the very large scales which are opaque and, therefore, immune to the effects of radiation. This suggests "destructive interference" between baryonic and dark matter density perturbations on galactic scales as an explanation for the apparent excess of power observed on the "great attractor" scales, when extrapolated from the estimates of the galaxy-galaxy correlations. Infrared background measurements by COBE should be able to verify-or rule out-this scenario, which, if correct, could also help reconcile the dynamically observed OMEGA with the flatness of the universe favored by inflation. RP ZUREK, WH (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,T-6,MAIL STOP B288,LOS ALAMOS,NM 87545, USA. NR 32 TC 1 Z9 1 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 APR 1 PY 1991 VL 370 IS 2 BP 474 EP 480 DI 10.1086/169833 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FB172 UT WOS:A1991FB17200002 ER PT J AU EVANS, E BERK, D LEUNG, A MOHANDAS, N AF EVANS, E BERK, D LEUNG, A MOHANDAS, N TI DETACHMENT OF AGGLUTININ-BONDED RED-BLOOD-CELLS .2. MECHANICAL ENERGIES TO SEPARATE LARGE CONTACT AREAS SO BIOPHYSICAL JOURNAL LA English DT Article ID MEMBRANE-MEMBRANE ADHESION; MOLECULAR CROSS-BRIDGES; MONOCLONAL-ANTIBODIES; DETAILED MECHANICS; BILAYER-MEMBRANES; SURFACE-ADHESION; GLYCOPHORIN-A; SIALOGLYCOPROTEIN; ERYTHROCYTES; RECEPTOR AB As detailed in a companion paper (Berk, D., and E. Evans. 1991. Biophys. J. 59:861-872), a method was developed to quantitate the strength of adhesion between agglutinin-bonded membranes without ambiguity due to mechanical compliance of the cell body. The experimental method and analysis were formulated around controlled assembly and detachment of a pair of macroscopically smooth red blood cell surfaces. The approach provides precise measurement of the membrane tension applied at the perimeter of an adhesive contact and the contact angle theta-c between membrane surfaces which defines the mechanical leverage factor (1 - cos theta-c) important in the definition of the work to separate a unit area of contact. Here, the method was applied to adhesion and detachment of red cells bound together by different monoclonal antibodies to red cell membrane glycophorin and the snail-helix pomatia-lectin. For these tests, one of the two red cells was chemically prefixed in the form of a smooth sphere then equilibrated with the agglutinin before the adhesion-detachment procedure. The other cell was not exposed to the agglutinin until it was forced into contact with the rigid cell surface by mechanical impingement. Large regions of agglutinin bonding were produced by impingement but no spontaneous spreading was observed beyond the forced contact. Measurements of suction force to detach the deformable cell yielded consistent behavior for all of the agglutinins: i.e., the strength of adhesion increased progressively with reduction in contact diameter throughout detachment. This tension-contact diameter behavior was not altered over a ten-fold range of separation rates. In special cases, contacts separated smoothly after critical tensions were reached; these were the highest values attained for tension. Based on Biophys. J. 59:838-848) of the forces required to rupture molecular-point attachments, the density of cross-bridges was estimated with the assumption that the tension was proportional to the discrete rupture force x the number of attachments per unit length. These estimates showed that only a small fraction of agglutinin formed cross-bridges at initial assembly and increased progressively with separation. When critical tension levels were reached, it appeared that nearly all local agglutinin was involved as cross-bridges. Because one cell surface was chemically fixed, receptor accumulation was unlikely; thus, microscopic "roughness" and steric repulsion probably modulated formation of cross-bridges on initial contact. To counter the steric repulsion, adhesive contacts were exposed to solutions of a high molecular weight polymer to draw the surfaces together by osmotic dehydration of the adhesion gap. These stresses exceeded initial mechanical assembly stresses by up to three orders of magnitude. As expected, the strength of adhesion was greatly enhanced by the added impingement stress. C1 UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 1W5,BC,CANADA. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CELL & MOLEC BIOL,BERKELEY,CA 94720. RP EVANS, E (reprint author), UNIV BRITISH COLUMBIA,DEPT PATHOL,VANCOUVER V6T 1W5,BC,CANADA. RI Berk, David/A-4863-2012 OI Berk, David/0000-0002-3855-6886 FU NHLBI NIH HHS [HL45099, HL31579] NR 36 TC 59 Z9 59 U1 0 U2 7 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD APR PY 1991 VL 59 IS 4 BP 849 EP 860 PG 12 WC Biophysics SC Biophysics GA FD595 UT WOS:A1991FD59500009 PM 2065189 ER PT J AU BIVIN, DB STONE, DB SCHNEIDER, DK MENDELSON, RA AF BIVIN, DB STONE, DB SCHNEIDER, DK MENDELSON, RA TI CROSS-HELIX SEPARATION OF TROPOMYOSIN MOLECULES IN ACTO-TROPOMYOSIN AS DETERMINED BY NEUTRON-SCATTERING SO BIOPHYSICAL JOURNAL LA English DT Article ID MYOSIN SUBFRAGMENT-1; TROPONIN-TROPOMYOSIN; DICTYOSTELIUM-DISCOIDEUM; MUSCLE REGULATION; COMPLEX AB The cross-helix separation of Tm molecules in acto-tropomyosin has been determined using neutron scattering. Deuterated Dictyostelium discoideum actin was density matched in a 93% D2O buffer so that effectively only the protonated tropomyosin was "visible" to neutrons. Analysis of the solution scattering pattern in the region of the first oscillation yielded a value for the cross-helix separation of 7.9 +/- 0.3 nm. The implications of this value for the mechanism of the regulation of muscle contraction are discussed in light of recent results by others. C1 UNIV CALIF SAN FRANCISCO,CARDIOVASC RES INST,SAN FRANCISCO,CA 94143. UNIV CALIF SAN FRANCISCO,DEPT BIOCHEM & BIOPHYS,SAN FRANCISCO,CA 94143. BROOKHAVEN NATL LAB,DIV BIOL,UPTON,NY 11973. FU NCRR NIH HHS [RR-1081]; NHLBI NIH HHS [HL-07192]; PHS HHS [H1-16683] NR 33 TC 18 Z9 18 U1 1 U2 1 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD APR PY 1991 VL 59 IS 4 BP 880 EP 888 PG 9 WC Biophysics SC Biophysics GA FD595 UT WOS:A1991FD59500012 PM 1829644 ER PT J AU GLAESER, RM DOWNING, KH JAP, BK AF GLAESER, RM DOWNING, KH JAP, BK TI WHAT SPECTROSCOPY CAN STILL TELL US ABOUT THE SECONDARY STRUCTURE OF BACTERIORHODOPSIN SO BIOPHYSICAL JOURNAL LA English DT Note ID CIRCULAR-DICHROISM SPECTRA; PURPLE MEMBRANE; 3-DIMENSIONAL STRUCTURE; INFRARED-SPECTROSCOPY; ELECTRON-MICROSCOPY; ABSORPTION; RESOLUTION; DIFFRACTION; FRAGMENTS AB The recently published model of the structure of bacteriorhodopsin (bR), developed by fitting the peptide chain to a high-resolution, three-dimensional density map, rules out the existence of transmembrane beta-sheet and provides an accurate estimate of the helix content. The precise geometry of the dihedral angles in the helical regions of the polypeptide cannot yet be specified from the diffraction data, however. Published data on the circular dichroism (CD) spectrum between 190 and 240 nm, and the infrared (IR) spectrum in the amide I band suggest that the helical conformation in bR may be, for the most part, a rather unusual one. The precise structural model, which specifies the number of residues in transmembrane helices, can now be used as an additional constraint in seeking models of the helical conformation that are in quantitative agreement with the CD and IR spectroscopic data. Further spectroscopic measurements can also be used to determine whether there are changes in the unusual dihedral-angle conformation within the helices during the photocycle. RP GLAESER, RM (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CELL & MOLEC BIOL,BERKELEY,CA 94720, USA. FU NIGMS NIH HHS [GM36884] NR 27 TC 9 Z9 9 U1 1 U2 3 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD APR PY 1991 VL 59 IS 4 BP 934 EP 938 PG 5 WC Biophysics SC Biophysics GA FD595 UT WOS:A1991FD59500019 PM 2065193 ER PT J AU ROLES, KA WUNDERLICH, B AF ROLES, KA WUNDERLICH, B TI HEAT-CAPACITIES OF SOLID POLY(AMINO ACIDS) .1. POLYGLYCINE, POLY(L-ALANINE), AND POLY(L-VALINE) SO BIOPOLYMERS LA English DT Article ID POLY-L-ALANINE; LINEAR MACROMOLECULES; THERMODYNAMIC PROPERTIES; THERMAL VARIATIONS; POLYAMIDES; CONVERSION; ALPHA; CP; CV AB Heat capacities of polyglycine, poly(L-alanine), and poly(L-valine) were analyzed using approximate group vibrations and fitting of the skeletal vibrations to a two-parameter (THETA-1, THETA-3) Tarasov function. New experimental data were measured by differential scanning calorimetry in the temperature range of 230-390 K. Good agreement between our experimental data and the calculated data was observed for all three poly (amino acids). Previous investigations showed agreement between calculation and reported experimental data for only limited low temperature ranges. At higher temperatures, discrepancies of up to 55% existed between experiment and calculation. The cause of this discrepancy must be assumed to be experimental error. Recommended experimental data are revised on the basis of this investigation. Computed heat capacities are available for the three biopolymers in the solid state from 0 to 1000 K. C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. RP ROLES, KA (reprint author), OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831, USA. NR 27 TC 53 Z9 53 U1 0 U2 7 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0006-3525 J9 BIOPOLYMERS JI Biopolymers PD APR PY 1991 VL 31 IS 5 BP 477 EP 487 DI 10.1002/bip.360310503 PG 11 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA FQ815 UT WOS:A1991FQ81500002 ER PT J AU SONG, L KIM, US WILCOXON, J SCHURR, JM AF SONG, L KIM, US WILCOXON, J SCHURR, JM TI DYNAMIC LIGHT-SCATTERING FROM WEAKLY BENDING RODS - ESTIMATION OF THE DYNAMIC BENDING RIGIDITY OF THE M13 VIRUS SO BIOPOLYMERS LA English DT Article ID FD-VIRUS; HYDRODYNAMIC INTERACTION; BROWNIAN DYNAMICS; INTERNAL MOTIONS; WORMLIKE CHAINS; DNA; FILAMENTS; SPECTRUM; DILUTE; FLEXIBILITY AB A theory is presented for the dynamic structure factor [S(K, t)] of weakly bending rods. This treatment is based on a discrete bead model for the Brownian dynamics in which all bead motions associated with bending are constrained to occur in a plane perpendicular to the end-to-end vector, thus prohibiting extension or contraction along that axis. Preset hydrodynamic interactions are incorporated in a numerically exact manner. The predicted normalized dynamic structure factor S(K, t)/S(K, 0) should be valid for short times t such that the rms rotation of the end-to-end vector around any transverse axis is much less than 1.0 radian. With geometrical parameters appropriate for the M13 virus, the intensity autocorrelation function G(2) (K, t) = 1 + \S(K, t)/S(K, 0)\2 is calculated over a range of times and scattering vectors K for selected values of the persistence length P. The calculated G(2) (K, t) are fitted to a single exponential with unit baseline over the same range of times as the experimental photon correlation functions, and the apparent diffusion coefficients D(app) (K) are obtained from the best-fit relaxation times. For the sake of completeness, an exact expression is derived for the apparent diffusion coefficient obtained from the initial slope of the dynamic structure factor. However, this does not reduce to the known correct result in the rigid rod limit. To obtain the correct result, the limit of infinite bending rigidity must be taken before the limit of zero time. For this and other reasons, the initial slope value of D(app) (K) is not useful for weakly bending rods. Photon correlation functions are measured for the M13 virus, which is virtually identical to the often-studied fd virus. The experimental photon correlation functions are fitted over 8 relaxation times to a single-exponential plus baseline, and the D(app) (K) are calculated from the best-fit relaxation times. Theoretical curves of D(app) (K) vs K2 for selected values of P are compared with the experimental data, which are satisfactorily reproduced when P = 22000 +/- 2000 angstrom. This dynamic value is close to the static value, P = 20000 +/- 2000 angstrom, reported for the very similar fd virus. The most recent theories of Maeda and Fujime and their dynamic light scattering studies of fd virus are compared with the present results in some detail. Their optimum value of P is in surprisingly good agreement with the present value. C1 SANDIA NATL LABS,ORG 1153,ALBUQUERQUE,NM 87185. RP SONG, L (reprint author), UNIV WASHINGTON,DEPT CHEM,BG10,SEATTLE,WA 98195, USA. RI Schurr, J. Michael/J-6089-2015 OI Schurr, J. Michael/0000-0002-5583-9538 NR 41 TC 38 Z9 39 U1 0 U2 3 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0006-3525 J9 BIOPOLYMERS JI Biopolymers PD APR PY 1991 VL 31 IS 5 BP 547 EP 567 DI 10.1002/bip.360310510 PG 21 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA FQ815 UT WOS:A1991FQ81500009 PM 1868169 ER PT J AU NICKOLOFF, JA REYNOLDS, RJ AF NICKOLOFF, JA REYNOLDS, RJ TI SUBCLONING WITH NEW AMPICILLIN-RESISTANT AND KANAMYCIN-RESISTANT ANALOGS OF PUC19 SO BIOTECHNIQUES LA English DT Note ID ESCHERICHIA-COLI; SACCHAROMYCES-CEREVISIAE; TETRACYCLINE RESISTANCE; TRANSFORMATION; MUTAGENESIS; SELECTION; SYSTEM; DNA C1 UNIV CALIF LOS ALAMOS SCI LAB, DIV LIFE SCI, LOS ALAMOS, NM 87545 USA. FU PHS HHS [R01 42390] NR 12 TC 16 Z9 16 U1 0 U2 2 PU BIOTECHNIQUES OFFICE PI NEW YORK PA 52 VANDERBILT AVE, NEW YORK, NY 10017 USA SN 0736-6205 EI 1940-9818 J9 BIOTECHNIQUES JI Biotechniques PD APR PY 1991 VL 10 IS 4 BP 469 EP + PG 1 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA FG600 UT WOS:A1991FG60000011 PM 1867854 ER PT J AU SUTHERLAND, JC SUTHERLAND, BM EMRICK, A MONTELEONE, DC RIBEIRO, EA TRUNK, J SON, M SERWER, P PODDAR, SK MANILOFF, J AF SUTHERLAND, JC SUTHERLAND, BM EMRICK, A MONTELEONE, DC RIBEIRO, EA TRUNK, J SON, M SERWER, P PODDAR, SK MANILOFF, J TI QUANTITATIVE ELECTRONIC IMAGING OF GEL FLUORESCENCE WITH CCD CAMERAS - APPLICATIONS IN MOLECULAR-BIOLOGY SO BIOTECHNIQUES LA English DT Article ID PYRIMIDINE DIMER FORMATION; BROMIDE-STAINED DNA; HUMAN-SKIN; ETHIDIUM-BROMIDE; AGAROSE GELS; STRAND BREAKS; ELECTROPHORESIS; RADIATION; INSITU; LENGTH AB Electronic imaging systems using charge-coupled-device detectors can replace photographic detection of ethidium bromide-labeled DNA and other fluorophore-labeled biopolymers in electrophoretic gels. The linear response of these devices to fluorescence greatly facilitates quantitative analysis of electrophoretic patterns. Electronic imaging also eliminates several slow and labor-intensive steps inherent in photographic detection of gel fluorescence and simplifies archival storage and recall of gel images. We describe several applications of electronic imaging of gel fluorescence in molecular biology. C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. UNIV ROCHESTER,SCH MED,ROCHESTER,NY 14627. RP SUTHERLAND, JC (reprint author), BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973, USA. FU NCI NIH HHS [CA23096]; NHGRI NIH HHS [HG00371]; NIGMS NIH HHS [GM24365] NR 32 TC 42 Z9 42 U1 0 U2 0 PU EATON PUBLISHING CO PI NATICK PA 154 E. CENTRAL ST, NATICK, MA 01760 SN 0736-6205 J9 BIOTECHNIQUES JI Biotechniques PD APR PY 1991 VL 10 IS 4 BP 492 EP 496 PG 5 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA FG600 UT WOS:A1991FG60000019 PM 1678269 ER PT J AU WEIER, HU ZITZELSBERGER, HF GRAY, JW AF WEIER, HU ZITZELSBERGER, HF GRAY, JW TI NONISOTOPIC LABELING OF MURINE HETEROCHROMATIN INSITU BY HYBRIDIZATION WITH INVITRO-SYNTHESIZED BIOTINYLATED GAMMA (MAJOR) SATELLITE DNA SO BIOTECHNIQUES LA English DT Article ID MOUSE; CELLS; CHROMOSOMES; LOCALIZATION; ORGANIZATION; SEQUENCE AB Degenerate probe DNA, homologous to part of the 234-bp repeated mouse gamma (major) satellite DNA, was generated by primer-directed in vitro DNA amplification using the polymerase chain reaction with oligonucleotide primers that anneal in the most conserved parts of the repeat. Probe labeling with biotin was performed during DNA polymerization. In situ hybridization of probe DNA with metaphase chromosome preparations showed exclusive binding of probe molecules to the centromeric region of mouse chromosomes. We applied the probe DNA for labeling of mouse heterochromatin in metaphase chromosomes, as well as interphase cell nuclei, and compared results of probe visualization using avidin tagged with either fluorescein or alkaline phosphatase in combination with a chromogenic substrate. C1 GESELL STRAHLEN & UMWELTFORSCH MBH,UMWELT & GESUNDHEIT FORSCHUNGSZENTRUM,W-8042 NEUHERBERG,GERMANY. RP WEIER, HU (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV BIOMED SCI,L-452,LIVERMORE,CA 94550, USA. NR 25 TC 44 Z9 44 U1 0 U2 0 PU EATON PUBLISHING CO PI NATICK PA 154 E. CENTRAL ST, NATICK, MA 01760 SN 0736-6205 J9 BIOTECHNIQUES JI Biotechniques PD APR PY 1991 VL 10 IS 4 BP 498 EP & PG 0 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA FG600 UT WOS:A1991FG60000020 PM 1867859 ER PT J AU DORAN, JC AF DORAN, JC TI THE EFFECTS OF AMBIENT WINDS ON VALLEY DRAINAGE FLOWS SO BOUNDARY-LAYER METEOROLOGY LA English DT Article ID ADVECTION TRANSPORT ALGORITHM; BRUSH CREEK VALLEY; NUMERICAL-SIMULATION; DEEP VALLEY; MODEL; TRIBUTARY; COLORADO; FLUXES AB The interaction of katabatic winds with ambient winds has been investigated for an idealized valley using Clark's nonhydrostatic model. Ambient ridgetop wind speeds ranged from 0.5 to 6 m/s, and made angles with the valley axis ranging from 0-degrees to 90-degrees; cooling of the valley was based on measured values of sensible heat fluxes taken from observations in Colorado's Brush Creek Valley. The depth and strength of the down-valley winds decreased with increasing ambient wind speeds but showed relatively little sensitivity to wind directions in the range of 10-degrees to 60-degrees from the valley axis. An observed inverse linear decrease of drainage depth with wind speed in a 100 m thick layer above the ridgetops was also found in the simulations for parts of the valley but not near the valley mouth. Vertical motions over the valley showed marked patchiness, and implications of this structure on valley flow dynamics are discussed. RP DORAN, JC (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 20 TC 22 Z9 23 U1 1 U2 4 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0006-8314 J9 BOUND-LAY METEOROL JI Bound.-Layer Meteor. PD APR PY 1991 VL 55 IS 1-2 BP 177 EP 189 DI 10.1007/BF00119333 PG 13 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA FP298 UT WOS:A1991FP29800010 ER PT J AU EVANS, JW CHANG, JA GIACCIA, AJ PINKEL, D BROWN, JM AF EVANS, JW CHANG, JA GIACCIA, AJ PINKEL, D BROWN, JM TI THE USE OF FLUORESCENCE INSITU HYBRIDIZATION COMBINED WITH PREMATURE CHROMOSOME CONDENSATION FOR THE IDENTIFICATION OF CHROMOSOME-DAMAGE SO BRITISH JOURNAL OF CANCER LA English DT Article ID MAMMALIAN-CELL FUSION; CYTOGENETIC ANALYSIS; ABERRATIONS; HYBRIDIZATION; SURVIVAL; DEATH AB The technique of fusing mitotic cells to interphase cells, thereby producing condensation of the chromosomes of the interphase cell (so-called 'premature chromosome condensation' or PCC), has allowed detection of the initial number of chromosome breaks and their repair following ionising radiation. However, the difficulty and tedium of scoring all the chromosome fragments, as well as the inability to readily detect exchange aberrations, has limited the use of PCC. We describe here the use of the recently developed technique of fluorescence in situ hybridisation with whole chromosome libraries to stain individual human chromosomes (also called 'chromosome painting') with the PCC's and show that this overcomes most of the limitations with the analysis of PCC's. First, by focusing on a single chromosome, scoring of breaks in the target chromosome is easy and rapid and greatly expands the radiation dose range over which the PCC technique can be used. Second, it allows the easy recognition of exchange type aberrations. A number of new applications of this technology, such as predicting the radiosensitivity of human tumours in situ, are feasible. C1 STANFORD UNIV,MED CTR,DEPT RADIAT ONCOL,STANFORD,CA 94305. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. FU NCI NIH HHS [CA15201] NR 20 TC 44 Z9 44 U1 0 U2 1 PU STOCKTON PRESS PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE, HAMPSHIRE, ENGLAND RG21 6XS SN 0007-0920 J9 BRIT J CANCER JI Br. J. Cancer PD APR PY 1991 VL 63 IS 4 BP 517 EP 521 DI 10.1038/bjc.1991.123 PG 5 WC Oncology SC Oncology GA FH596 UT WOS:A1991FH59600011 PM 2021536 ER PT J AU BALACHANDRAN, U POEPPEL, RB EMERSON, JE LANAGAN, MT YOUNGDAHL, CA JOHNSON, SA AF BALACHANDRAN, U POEPPEL, RB EMERSON, JE LANAGAN, MT YOUNGDAHL, CA JOHNSON, SA TI SYNTHESIS OF CERAMIC SUPERCONDUCTORS UNDER LOW OXYGEN-PRESSURE SO BULLETIN OF MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT INTERNATIONAL CONF ON SUPERCONDUCTIVITY CY JAN 10-14, 1990 CL BANGALORE, INDIA SP SUPERCONDUCT PROGRAMME MANAGEMENT BOARD INDIA, DEPT SCI & TECHNOL INDIA DE SYNTHESIS; IMPROVED CALCINATION; CERAMIC SUPERCONDUCTORS AB We have developed a process for synthesizing orthorhombic YBa2Cu3O(x) (123) superconducting powders by calcination of the precursor powder under reduced total oxygen pressure. Because a single calcination at 800-degrees-C for 4 h in flowing oxygen at a pressure of 2 mm Hg results in essentially phase-pure material, total calcination times have been drastically reduced. At liquid nitrogen temperature, sintered pellets made from this powder have critical current densities of approximately 1000 A/cm2 in zero applied magnetic field. RP BALACHANDRAN, U (reprint author), ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU INDIAN ACADEMY SCIENCES PI BANGALORE PA P B 8005 C V RAMAN AVENUE, BANGALORE 560 080, INDIA SN 0250-4707 J9 B MATER SCI JI Bull. Mat. Sci. PD APR PY 1991 VL 14 IS 2 BP 185 EP 188 DI 10.1007/BF02747312 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA FX174 UT WOS:A1991FX17400016 ER PT J AU KIDDER, RE AF KIDDER, RE TI SAFETY NO BARRIER TO TEST BAN SO BULLETIN OF THE ATOMIC SCIENTISTS LA English DT Article RP KIDDER, RE (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDUC FOUNDATION NUCLEAR SCI PI CHICAGO PA 6042 SOUTH KIMBARK, CHICAGO, IL 60637 SN 0096-3402 J9 B ATOM SCI JI Bull. Atom. Scient. PD APR PY 1991 VL 47 IS 3 BP 32 EP 34 PG 3 WC International Relations; Social Issues SC International Relations; Social Issues GA FC273 UT WOS:A1991FC27300011 ER PT J AU DRELL, SD FOSTER, JS TOWNES, CH AF DRELL, SD FOSTER, JS TOWNES, CH TI HOW SAFE IS SAFE SO BULLETIN OF THE ATOMIC SCIENTISTS LA English DT Article C1 UNIV CALIF BERKELEY,BERKELEY,CA 94720. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP DRELL, SD (reprint author), STANFORD UNIV,STANFORD,CA 94305, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU EDUC FOUNDATION NUCLEAR SCI PI CHICAGO PA 6042 SOUTH KIMBARK, CHICAGO, IL 60637 SN 0096-3402 J9 B ATOM SCI JI Bull. Atom. Scient. PD APR PY 1991 VL 47 IS 3 BP 35 EP 40 PG 6 WC International Relations; Social Issues SC International Relations; Social Issues GA FC273 UT WOS:A1991FC27300012 ER PT J AU MICHELINI, A MCEVILLY, TV AF MICHELINI, A MCEVILLY, TV TI SEISMOLOGICAL STUDIES AT PARKFIELD .1. SIMULTANEOUS INVERSION FOR VELOCITY STRUCTURE AND HYPOCENTERS USING CUBIC B-SPLINES PARAMETERIZATION SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID SAN-ANDREAS FAULT; CENTRAL CALIFORNIA; CRUSTAL STRUCTURE; PORE PRESSURE; EARTHQUAKE; CONSTITUTION; ROCKS; ZONE AB A model for the 3D P- and S-wave velocity structure at Parkfield has been developed by the systematic inversion of arrival times for microearthquakes and surface Vibroseis sources, recorded by nearby CALNET stations and by the local borehole-installed 10-station High-Resolution Seismic Network there. A modification of the linear B-splines model parameterization method of Thurber (1983) to a cubic B-splines formulation, through tests inverting synthetic data sets for the Parkfield configuration, is found to produce smooth velocity distributions that still retain some small-scale features. Application of the method to 953 P-wave and 288 S-wave arrivals from 111 microearthquakes and 8 Vibroseis locations throughout the study area yields a velocity structure having variable resolution. A low-velocity zone appears to coincide with the creeping segment of the San Andreas fault zone northwest of the 1966 Parkfield earthquake epicenter. An increase of about 15 per cent in seismic velocities is seen from the northeast to southwest across this segment of the fault zone. The higher velocities to the southwest apparently correspond to the granitic basement. The contrast across the fault is subdued to the southeast along the 1966 rupture zone. A high Vp/Vs ratio of 1.9 is seen in a 2-km-wide, volume near the location of the 1966 main shock hypocenter, presumably the nucleation zone for the expected M = 6 Parkfield earthquake. C1 UNIV CALIF BERKELEY, DEPT GEOL & GEOPHYS, SEISMOG STN, BERKELEY, CA 94720 USA. RP UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, CTR COMPUTAT SEISMOL, BERKELEY, CA 94720 USA. NR 56 TC 221 Z9 222 U1 0 U2 4 PU SEISMOLOGICAL SOC AMER PI ALBANY PA 400 EVELYN AVE, SUITE 201, ALBANY, CA 94706-1375 USA SN 0037-1106 EI 1943-3573 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD APR PY 1991 VL 81 IS 2 BP 524 EP 552 PG 29 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FF669 UT WOS:A1991FF66900012 ER PT J AU FEHLER, M PHILLIPS, WS AF FEHLER, M PHILLIPS, WS TI SIMULTANEOUS INVERSION FOR Q-PARAMETERS AND SOURCE PARAMETERS OF MICROEARTHQUAKES ACCOMPANYING HYDRAULIC FRACTURING IN GRANITIC ROCK SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID EARTHQUAKE SEQUENCE; TECTONIC STRESS; SEISMIC MOMENT; GROUND MOTION; FENTON-HILL; NEW-MEXICO; FREQUENCY; CALIFORNIA; FMAX; SITE AB An inversion that fits spectra of earthquake waveforms and gives robust estimates of corner frequency and low-frequency spectral amplitude has been used to determine source parameters of 223 microearthquakes induced by hydraulic fracturing in granodiorite. Assuming a omega-2 source model, the inversion fits the P-wave spectra of microearthquake waveforms to determine individual values of corner frequency and low-frequency spectral amplitude for each event and one average frequency-independent Q for all source-receiver paths. We also implemented a constraint that stress drops of all microearthquakes be similar but not equal and found that this constraint did not significantly degrade the quality of the fits to the spectra. The waveforms analyzed were recorded by a borehole seismometer. The P-wave Q was found to be 1070. For Q values as low as 600 and as high as 3000, the misfit between model and spectra increased by less than 5 per cent and the average corner frequency changed by less than 15 per cent from those obtained with a Q of 1070. Average stress drop was 3.7 bars. Seismic moments obtained from spectra ranged from 10(13) to 10(18) dyn-cm. The low stress drops are interpreted to result from underestimation of the actual stress drops because of a nonuniform distribution of stress drop and slip along the fault planes. Spatially varying stress drops and slips result from the strong rock heterogeneity due to the injection of fluid into the rock. Stress drops were found to be larger near the edges of the seismic zone, in regions that had not been seismically active during previous injections. The seismic moments determined from spectra were used to obtain a coda length-to-moment relation. Then, moments were estimated for 1149 events from measurements of coda lengths from events whose moments could not be measured from spectra because of saturation or a low signal-to-noise ratio. The constant of proportionality between cumulative number of events and seismic moment is higher than that found for tectonic regions. The slope is so high that the seismic energy release is dominated by the large number of small events. In the absence of information about the number of events smaller than we studied, we cannot estimate the total seismic energy released by the hydraulic injection. RP FEHLER, M (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV EARTH & ENVIRONM SCI,MAIL STOP D443,LOS ALAMOS,NM 87545, USA. NR 46 TC 51 Z9 53 U1 0 U2 3 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 APR PY 1991 VL 81 IS 2 BP 553 EP 575 PG 23 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FF669 UT WOS:A1991FF66900013 ER PT J AU WALCK, MC CHAEL, EP AF WALCK, MC CHAEL, EP TI OPTIMAL BACKAZIMUTH ESTIMATION FOR 3-COMPONENT RECORDINGS OF REGIONAL SEISMIC EVENTS SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID TEST NETWORK; LOCATION; STATION; SINGLE AB Augmenting travel-time data with backazimuth information can improve regional seismic event locations for which only a few recording stations are available. This study examines the achievable accuracy of backazimuths derived from 164 regional short-period P waves recorded at Regional Seismic Test Network (RSTN) stations. The data represent 62 events with a good distribution of distance, azimuth, and signal-to-noise ratio (SNR) at each of four RSTN stations. Using Preliminary Determination of Epicenter locations to generate reference backazimuths, we examine the effects of computational method, signal window length, frequency content, and SNR on RSTN backazimuth estimates. The variety of geologic environments at the receivers also allows assessment of the effect of receiver structure on backazimuth estimation. Our results indicate that regional three-component recordings can produce useful backazimuths; more than 75 per cent of the records yield backazimuths within 20-degrees of the correct value when reasonable parameters are used. The accuracy of the calculated backazimuths does vary with the receiver, however. RSTN stations in New York and Ontario, located in Precambrian terranes, produce very accurate backazimuths for SNRs greater than 5 dB. At the South Dakota and Tennessee stations, located in sedimentary rocks, complicated receiver structure is the controlling factor in backazimuth estimation. Propagational complexities at the South Dakota site preclude recovery of reasonable backazimuth values; poor statistics are obtained for all parameter combinations. At the Tennessee site, backazimuth accuracy depends strongly on the computational method used. In general, the choice of frequency band is important and varies by stations, while the length of the signal window is less critical. If the problematic South Dakota records are excluded, we achieve an rms backazimuth error of about 6-degrees for recordings with SNR above 10 dB. While a single optimized choice of parameters produces good results for the 164-record data set, a further 5 to 10 per cent improvement can be achieved if the parameters are customized on a station-by-station basis. C1 SANDIA NATL LABS,DIV VERIFICAT SYST & TECHNOL 4 9244,ALBUQUERQUE,NM 87185. RP WALCK, MC (reprint author), SANDIA NATL LABS,DIV GEOPHYS 6231,ALBUQUERQUE,NM 87185, USA. NR 21 TC 11 Z9 11 U1 0 U2 1 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 APR PY 1991 VL 81 IS 2 BP 643 EP 666 PG 24 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FF669 UT WOS:A1991FF66900018 ER PT J AU ANDERSEN, CP MCLAUGHLIN, SB ROY, WK AF ANDERSEN, CP MCLAUGHLIN, SB ROY, WK TI A COMPARISON OF SEASONAL PATTERNS OF PHOTOSYNTHATE PRODUCTION AND USE IN BRANCHES OF RED SPRUCE SAPLINGS AT 2 ELEVATIONS SO CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE LA English DT Article ID AIR-POLLUTION; PINE; FOLIAGE; DECLINE; FORESTS; STAND; FOOD AB Seasonal patterns of carbon transport from C-14-labeled foliage were examined in red spruce (Picea rubens Sarg.) branches at 1935 and 1720 m elevations in the Great Smoky Mountains National Park to characterize possible physiological mechanisms underlying the observed reductions in growth at high elevations. Current and 1-year-old foliage was labeled on 5- to 7-year-old branches of sapling-sized trees in June, August, and October. Retention of C-14 was measured after 24 h, and allocation to other branch segments was characterized after 7 days. Total C-14-labeled carbon assimilation was greater in current than in 1-year-old foliage throughout the growing season. This suggests that photosynthetic capacity is high in developing foliage prior to needle maturity and remains high during the first growing season. In August, C-14 retention is labeled foliage was less at the higher than at the lower elevation site, possibly reflecting increased respiratory losses that had been previously reported at the higher site. Retention of C-14 in current-year shoots as a percent of C-14 remaining after 7 days, a measure of sink strength, was high at both sites in June and remained high throughout the season in current-year shoots at the higher elevation site. The relatively high sink activity coupled with the large apportionment of biomass to current-year shoots (19.9 and 26.7% of total branch biomass at the lower and higher elevation sites, respectively) may make red spruce particularly susceptible to stresses such as winter injury that affect young foliage. In addition, the relatively greater sink activity of current-year shoots at the higher elevation site in August and October suggests that the contribution of current-year foliage to overall tree growth may be less at the higher than at the lower elevation site. C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. NR 21 TC 9 Z9 9 U1 0 U2 0 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0045-5067 J9 CAN J FOREST RES JI Can. J. For. Res.-Rev. Can. Rech. For. PD APR PY 1991 VL 21 IS 4 BP 455 EP 461 DI 10.1139/x91-061 PG 7 WC Forestry SC Forestry GA FE207 UT WOS:A1991FE20700005 ER PT J AU WANGEN, LE BENTLEY, GE COFFELT, KP GALLIMORE, DL PHILLIPS, MV AF WANGEN, LE BENTLEY, GE COFFELT, KP GALLIMORE, DL PHILLIPS, MV TI INDUCTIVELY COUPLED PLASMA MASS-SPECTROMETRY DRIFT CORRECTION BASED ON GENERALIZED INTERNAL REFERENCES IDENTIFIED BY PRINCIPAL COMPONENTS FACTOR-ANALYSIS SO CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS LA English DT Article ID CONCOMITANT ELEMENTS; INTERFERENCES; STANDARD AB Abstract factor analysis is applied to repeated measurements of inductively coupled plasma-mass spectrometry (ICP-MS) responses for several elemental masses in a multielement standard. During good operation, over 90% of the variance in response is accounted for by two or three factors. These factors tend to correlate with different mass ranges, and these correlations allow a rational basis for selection of candidates for internal reference elements. Internal references selected from these candidates were used to evaluate three different mathematical methods for correcting ICP-MS responses of all elements. The line ratio internal reference method and the analyte internal reference correlation method, which use a single internal reference for all elemental masses, improved precisions for most elements but decreased or had no effect on precisions of other elements. The generalized internal reference method, which may use more than one elemental mass in the correction calculation, improved precisions for all elements in most experiments. C1 UNIV CALIF LOS ALAMOS SCI LAB,ANALYT CHEM GRP,LOS ALAMOS,NM 87545. NR 10 TC 8 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-7439 J9 CHEMOMETR INTELL LAB JI Chemometrics Intell. Lab. Syst. PD APR PY 1991 VL 10 IS 3 BP 293 EP 301 DI 10.1016/0169-7439(91)80095-8 PG 9 WC Automation & Control Systems; Chemistry, Analytical; Computer Science, Artificial Intelligence; Instruments & Instrumentation; Mathematics, Interdisciplinary Applications; Statistics & Probability SC Automation & Control Systems; Chemistry; Computer Science; Instruments & Instrumentation; Mathematics GA FM007 UT WOS:A1991FM00700004 ER PT J AU AUBERT, JH SYLWESTER, AP AF AUBERT, JH SYLWESTER, AP TI MICROCELLULAR FOAMS - FOR WHAT .1. SO CHEMTECH LA English DT Article C1 SANDIA NATL LABS,DIV FUEL SCI,ALBUQUERQUE,NM 87185. RP AUBERT, JH (reprint author), SANDIA NATL LABS,SANDIA TARGET FABRICAT DIV,DIV 1276,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 12 TC 7 Z9 8 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0009-2703 J9 CHEMTECH JI Chemtech PD APR PY 1991 VL 21 IS 4 BP 234 EP 238 PG 5 WC Chemistry, Applied SC Chemistry GA FJ971 UT WOS:A1991FJ97100011 ER PT J AU SAINI, S KULANDER, KC AF SAINI, S KULANDER, KC TI MUON CATALYZED FUSION - MUON-CAPTURE BY PROTON FROM K-SHELLS AND L-SHELLS OF ALPHA-MU SO CHINESE JOURNAL OF PHYSICS LA English DT Article RP SAINI, S (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,THEORET ATOM & MOLEC PHYS GRP,POB 808,LIVERMORE,CA 94550, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PHYSICAL SOC REPUBLIC CHINA PI TAIPEI PA CHINESE JOURNAL PHYSICS PO BOX 23-30, TAIPEI 10764, TAIWAN SN 0577-9073 J9 CHINESE J PHYS JI Chin. J. Phys. PD APR PY 1991 VL 29 IS 2 BP 115 EP 129 PG 15 WC Physics, Multidisciplinary SC Physics GA FG859 UT WOS:A1991FG85900005 ER PT J AU LIU, SH KLEMM, RA AF LIU, SH KLEMM, RA TI INTERLAYER PAIRING - A POSSIBLE NEW TYPE OF SUPERCONDUCTIVITY IN LAYERED MATERIALS SO CHINESE JOURNAL OF PHYSICS LA English DT Article AB A number of recent experiments on high quality samples of YBa2Cu3O7-delta (Y123) have indicated that the superconducting energy gap in this material is highly anisotropic. This has prompted us to investigate the possibility that Cooper pairs in layered copper-oxide are formed by electrons in different CuO2 layers. In this paper we report our findings on the physical consequences of interlayer pairing in materials with one, two and three conducting layers per unit cell, and the competition between intralayer and interlayer pairing mechanisms. One important result of our investigation is that, as required by time reversal invariance, the order parameters are associated with bands, not with layers as assumed in many recent publications on similar models. The two-layer model is particularly interesting because it gives a good account of the properties of the gap function of Y123. RP LIU, SH (reprint author), OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831, USA. NR 0 TC 7 Z9 7 U1 0 U2 0 PU PHYSICAL SOC REPUBLIC CHINA PI TAIPEI PA CHINESE JOURNAL PHYSICS PO BOX 23-30, TAIPEI 10764, TAIWAN SN 0577-9073 J9 CHINESE J PHYS JI Chin. J. Phys. PD APR PY 1991 VL 29 IS 2 BP 157 EP 189 PG 33 WC Physics, Multidisciplinary SC Physics GA FG859 UT WOS:A1991FG85900008 ER PT J AU JACOBSON, S GOLSHANSHIRAZI, S GUIOCHON, G AF JACOBSON, S GOLSHANSHIRAZI, S GUIOCHON, G TI INFLUENCE OF THE MOBILE PHASE-COMPOSITION ON THE ADSORPTION-ISOTHERMS OF AN AMINO-ACID DERIVATIVE ON IMMOBILIZED BOVINE SERUM-ALBUMIN SO CHROMATOGRAPHIA LA English DT Article DE COLUMN LIQUID CHROMATOGRAPHY; ADSORPTION ISOTHERMS; IMMOBILIZED SERUM ALBUMIN; CHIRAL STATIONARY PHASE; LEUCINE,N-BENZOYL DERIVATIVE ID LIQUID-CHROMATOGRAPHIC SEPARATION; PROTEIN STATIONARY PHASES; OPTICAL RESOLUTION; AFFINITY-CHROMATOGRAPHY; ENANTIOMERS; SERIES AB The saturation capacity of columns packed with bovine serum albumin immobilized on silica has been determined for the N-benzoyl derivative of leucine at different compositions of a 1-propanol/water mobile phase. In all cases it has been found that the equilibrium adsorption data are well accounted for by a biLangmuir isotherm. The experimental data are consistent with the assumption that the column saturation capacity of the chiral selective sites as well as the saturation capacity of the non-selective sites are independent of the 1-propanol concentration in the range 0-10%. C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 23 TC 5 Z9 5 U1 1 U2 2 PU FRIEDR VIEWEG SOHN VERLAG GMBH PI WIESBADEN 1 PA PO BOX 5829, W-6200 WIESBADEN 1, GERMANY SN 0009-5893 J9 CHROMATOGRAPHIA JI Chromatographia PD APR PY 1991 VL 31 IS 7-8 BP 323 EP 328 DI 10.1007/BF02262186 PG 6 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA FK596 UT WOS:A1991FK59600001 ER PT J AU VO-DINH, T ALARIE, JP JOHNSON, RW SEPANIAK, MJ SANTELLA, RM AF VO-DINH, T ALARIE, JP JOHNSON, RW SEPANIAK, MJ SANTELLA, RM TI EVALUATION OF THE FIBEROPTIC ANTIBODY-BASED FLUOROIMMUNOSENSOR FOR DNA ADDUCTS IN HUMAN PLACENTA SAMPLES SO CLINICAL CHEMISTRY LA English DT Article DE BENZO[A]PYRENE; FLUOROIMMUNOASSAY; CARCINOGENS ID SENSORS AB This paper presents the application of a fiber-optic antibody-based fluoroimmunosensor (FIS) for measuring DNA adducts of benzo[a]pyrene in human placenta samples. The FIS combines the excellent specificity of the antigen-antibody reaction, the high sensitivity of laser excitation, and the versatility of fiber-optic technology. The FIS was used to detect benzo[a]pyrene tetrol (BPT) after release from DNA by mild acid hydrolysis. These placenta samples contained one molecule of adduct per 10(7) base pairs. The limit of detection of the FIS for BPT is about 14 amol (14 x 10(-18) mol). C1 COLUMBIA UNIV, SCH PUBL HLTH, NEW YORK, NY 10032 USA. UNIV TENNESSEE, DEPT CHEM, KNOXVILLE, TN 37916 USA. RP VO-DINH, T (reprint author), OAK RIDGE NATL LAB, DIV HLTH & SAFETY RES, ADV MONITORING DEV GRP, OAK RIDGE, TN 37830 USA. FU NCI NIH HHS [CA 21111]; NIEHS NIH HHS [ES 05294]; NIGMS NIH HHS [GM-34730] NR 15 TC 36 Z9 36 U1 0 U2 0 PU AMER ASSOC CLINICAL CHEMISTRY PI WASHINGTON PA 2101 L STREET NW, SUITE 202, WASHINGTON, DC 20037-1526 USA SN 0009-9147 J9 CLIN CHEM JI Clin. Chem. PD APR PY 1991 VL 37 IS 4 BP 532 EP 535 PG 4 WC Medical Laboratory Technology SC Medical Laboratory Technology GA FH316 UT WOS:A1991FH31600012 PM 2015666 ER PT J AU CHASIS, JA CONBOY, J TCHERNIA, G KABRA, A WINARDI, R MOHANDAS, N AF CHASIS, JA CONBOY, J TCHERNIA, G KABRA, A WINARDI, R MOHANDAS, N TI EXPRESSION OF PROTEIN-4.1 IN NONERYTHROID CELLS OF INDIVIDUAL WITH 4.1-DEFICIENT ERYTHROCYTES THROUGH USE OF ALTERNATIVE TRANSLATION INITIATION SITE(S) SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 UNIV CALIF SAN FRANCISCO,SAN FRANCISCO,CA 94143. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A269 EP A269 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32300744 ER PT J AU KOTLER, DP TIERNEY, AR DILMANIAN, FA KAMEN, Y WEBER, DA WANG, J PIERSON, RN AF KOTLER, DP TIERNEY, AR DILMANIAN, FA KAMEN, Y WEBER, DA WANG, J PIERSON, RN TI CORRELATION BETWEEN TOTAL-BODY POTASSIUM (TBK) AND NITROGEN (TBN) IN PATIENTS WITH ACQUIRED-IMMUNODEFICIENCY-SYNDROME (AIDS) SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 COLUMBIA UNIV,ST LUKES ROOSEVELT HOSP,NEW YORK,NY 10027. BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 7 Z9 7 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A649 EP A649 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32302931 ER PT J AU PALLAVICINI, MG LANGLOIS, R MADDEN, D GONZALGO, M DUNCAN, B FLAKE, A BETHEL, C AF PALLAVICINI, MG LANGLOIS, R MADDEN, D GONZALGO, M DUNCAN, B FLAKE, A BETHEL, C TI INUTERO TRANSPLANTATION OF HUMAN FETAL HEMATOPOIETIC-CELLS IN RODENTS SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV BIOMED SCI,LIVERMORE,CA 94550. UNIV CALIF SAN FRANCISCO,DEPT SURG,SAN FRANCISCO,CA 94143. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A378 EP A378 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32301337 ER PT J AU RUBIN, EM KRAUSS, RM SPANGLER, EA VERSTUYFT, JG CLIFT, SM AF RUBIN, EM KRAUSS, RM SPANGLER, EA VERSTUYFT, JG CLIFT, SM TI HUMAN APOLIPOPROTEIN A-I IN TRANSGENIC MICE RAISES HDL AND PROTECTS AGAINST ATHEROSCLEROSIS SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV RES MED & RADIAT BIOPHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT CELL & MOLEC BIOL,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A251 EP A251 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32300635 ER PT J AU WANG, J KOTLER, DP BURASTERO, S RUSSELLAULET, M THORNTON, J DILMANIAN, FA WEBER, DA KAMEN, Y PIERSON, RN AF WANG, J KOTLER, DP BURASTERO, S RUSSELLAULET, M THORNTON, J DILMANIAN, FA WEBER, DA KAMEN, Y PIERSON, RN TI MEASURING BODY-FAT IN AIDS - WHICH METHOD SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 ST LUKES ROOSEVELT HOSP,NEW YORK,NY 10025. BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A163 EP A163 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32300127 ER PT J AU YASUMURA, S KIEBZAK, GM GOTHELF, T SHORT, L SPEERS, R DILMANIAN, FA JONES, K SPANNE, P SCHIDLOVSKY, G GLAROS, D HEYMSFIELD, S AF YASUMURA, S KIEBZAK, GM GOTHELF, T SHORT, L SPEERS, R DILMANIAN, FA JONES, K SPANNE, P SCHIDLOVSKY, G GLAROS, D HEYMSFIELD, S TI BODY-COMPOSITION IN AGING MALE-RATS SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 SUNY HLTH SCI CTR,BROOKLYN,NY. BROOKHAVEN NATL LAB,UPTON,NY 11973. ST LUKES ROOSEVELT HOSP,NEW YORK,NY 10025. NIA,GRC,BALTIMORE,MD 21224. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A657 EP A657 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32302981 ER PT J AU ZANJANI, ED PALLAVICINI, MG HARRISON, MR TAVASSOLI, M AF ZANJANI, ED PALLAVICINI, MG HARRISON, MR TAVASSOLI, M TI SUCCESSFUL STABLE XENOGRAFT OF HUMAN FETAL HEMATOPOIETIC-CELLS IN PREIMMUNE FETAL SHEEP SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 VANC,RENO,NV. UNIV CALIF SAN FRANCISCO,SAN FRANCISCO,CA 94143. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. VET ADM MED CTR,JACKSON,MS 39216. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 USA SN 0009-9279 J9 CLIN RES JI Clin. Res. PD APR PY 1991 VL 39 IS 2 BP A211 EP A211 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA FH323 UT WOS:A1991FH32300405 ER PT J AU HAYES, D MEISEL, D MICIC, OI AF HAYES, D MEISEL, D MICIC, OI TI SIZE CONTROL AND PROPERTIES OF THIOL CAPPED CDS PARTICLES SO COLLOIDS AND SURFACES LA English DT Article ID SEMICONDUCTOR COLLOIDS; RADIATION-CHEMISTRY; OPTICAL-PROPERTIES; ELECTRONIC STATE; CADMIUM-SULFIDE; CLUSTERS; LUMINESCENCE; PHOTOCHEMISTRY; CRYSTALLITES; PHOTOPHYSICS AB The growth of CdS particles was radiolytically initiated by the release of HS - ions from a thiol, via its reaction with hydrated electrons, in Cd2+ containing solutions. The size of particles thus obtained could be controlled by the concentration ratio of the solution components Cd2+/H2S/RSH. The higher is the concentration of Cd2+ and RSH at a given H2S concentration the smaller are the particles obtained. A mechanism to rationalize this size control is suggested to involve competition between complexation of thiolate ions with Cd2+ ions at the surface of a core CdS particle and growth of the particles, primarily by ion-cluster addition. The formation of surface thiol-Cd2+ complexes was indicated by conductivity measurements and by energy dispersive X-ray analysis of the particles. The particles thus obtained were found to be strongly fluorescent at sizes larger than ca 16 angstrom. This emission results from recombination of trapped charge carriers. Generation of electrons and holes, by flash photolysis, and injection of electrons into the particles leads to blue shift in the absorption spectra of the particles. This shift of the exciton band to higher energies is shown to result from screening effects on the exciton binding energy rather than from band filling effects. C1 BORIS KIDRIC INST NUCL SCI,YU-11001 BELGRADE,YUGOSLAVIA. RP HAYES, D (reprint author), ARGONNE NATL LAB,DEPT CHEM,ARGONNE,IL 60439, USA. NR 38 TC 35 Z9 35 U1 2 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-6622 J9 COLLOID SURFACE PD APR PY 1991 VL 55 BP 121 EP 136 DI 10.1016/0166-6622(91)80087-5 PG 16 WC Chemistry, Physical SC Chemistry GA FM729 UT WOS:A1991FM72900011 ER PT J AU TIESZEN, SR STAMPS, DW WESTBROOK, CK PITZ, WJ AF TIESZEN, SR STAMPS, DW WESTBROOK, CK PITZ, WJ TI GASEOUS HYDROCARBON-AIR DETONATIONS SO COMBUSTION AND FLAME LA English DT Article ID MIXTURES; OXIDATION AB Detonation cell width measurements were made on mixtures of air and methane, ethane, dimethyl-ether, nitroethane, ethylene, acetylene, propane, 1,2-epoxypropane, n-hexane, 1-nitrohexane, mixed primary hexylnitrate, n-octane, 2,2,4-trimethylpentane, cyclooctane, 1-octene, cis-cyclootene, 1,7-octadiene, 1-octyne, n-decane, 1,2-epoxydecane, pentyl-ether, and JP4. Cell width measurements were carried out at 25 and 100-degrees-C for some of these fuel-air mixtures. For the stoichiometric alkanes, alkenes, and alkynes, there is a very slight decrease in detonation cell width with increasing initial temperature from 25-degrees-C to 100-degrees-C, although the differences are within the experimental uncertainties in cell width measurements. Also within the uncertainty limits of the measurements, there is no variation in detonation cell width with increase fuel molecular weight for n-alkanes from ethane to n-decane. Molecular structure is found to affect detonability for C-8 hydrocarbons, where the saturated ring structure is more sensitive than the straight-chain alkane, which is more sensitive than the branched-chain alkane. Unsaturated alkenes and alkynes are more sensitive to detonation than saturated alkanes. However, the degree of sensitization decreases with increasing molecular weight. Addition of functional groups such as nitro, nitrate, epoxy, and ethers is found to significantly reduce the detonation cell width from the parent n-alkane. Nitrated n-alkanes can be more sensitive than hydrogen-air mixtures. The increase in sensitivity of epoxy groups appears to be related to the oxygen to carbon ratio of the molecule. A numerical model, using a simplified ZND analysis and a detailed chemical kinetic reaction mechanism, was used to interpret the experimental results. The model indicates the effect that each factor-fuel molecule size, fuel structure, initial temperature, bond saturation, and inclusion of different functional groups-has on the computed induction length under detonation conditions. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP TIESZEN, SR (reprint author), SANDIA NATL LABS,DIV 6463,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 44 TC 47 Z9 54 U1 2 U2 16 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD APR PY 1991 VL 84 IS 3-4 BP 376 EP 390 DI 10.1016/0010-2180(91)90013-2 PG 15 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA FH433 UT WOS:A1991FH43300013 ER PT J AU PRESTRIDGE, DS AF PRESTRIDGE, DS TI SIGNAL SCAN - A COMPUTER-PROGRAM THAT SCANS DNA-SEQUENCES FOR EUKARYOTIC TRANSCRIPTIONAL ELEMENTS SO COMPUTER APPLICATIONS IN THE BIOSCIENCES LA English DT Article ID PROTEINS AB SIGNAL SCAN is a program that has been developed to aid the molecular biologist in determining what eukaryotic transcription factor elements (and other significant elements) may exist in a DNA sequence under investigation. The program uses flatfile databases of these elements. SIGNAL SCAN is most useful for analyzing mammalian sequences due to the prevalence of mammalian elements in the database. Elements not found in the SIGNAL SCAN database may be entered by the user. SIGNAL SCAN uses both specific sequence elements derived from biochemical characterization and elements from derived consensus sequences to match against a user input DNA sequence. While any DNA sequence element matching an element in the SIGNAL SCAN database will be reported by the program, the determination of the biological relevance of the element is left up to the investigator. RP PRESTRIDGE, DS (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,THEORET BIOL & BIOPHYS GRP,T-10,MS K710,LOS ALAMOS,NM 87545, USA. FU NIGMS NIH HHS [5T32-GM07754, GM-37812] NR 9 TC 487 Z9 516 U1 0 U2 5 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0266-7061 J9 COMPUT APPL BIOSCI JI Comput. Appl. Biosci. PD APR PY 1991 VL 7 IS 2 BP 203 EP 206 PG 4 WC Computer Science, Interdisciplinary Applications SC Computer Science GA FH518 UT WOS:A1991FH51800009 PM 2059845 ER PT J AU BRICKNER, RG BAILLIE, CF JOHNSSON, SL AF BRICKNER, RG BAILLIE, CF JOHNSSON, SL TI QCD ON THE CONNECTION MACHINE - BEYOND LISP SO COMPUTER PHYSICS COMMUNICATIONS LA English DT Article AB We report on the status of code development for a simulation of quantum chromodynamics (QCD) with dynamical Wilson fermions on the Connection Machine model CM-2. Our original code, written in * Lisp, gave performance in the near-GFLOPS range. We have rewritten the most time-consuming parts of the code in the low-level programming system CMIS, including the matrix multiply and the communication. Current versions of the code run at approximately 3.6 GFLOPS for the fermion matrix inversion, and we expect the next version to reach or exceed 5 GFLOPS. C1 CALTECH,CONCURRENT COMPUTAT,PASADENA,CA 91125. THINKING MACHINES CORP,CAMBRIDGE,MA 02142. RP BRICKNER, RG (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0010-4655 J9 COMPUT PHYS COMMUN JI Comput. Phys. Commun. PD APR PY 1991 VL 65 IS 1-3 BP 39 EP 51 DI 10.1016/0010-4655(91)90152-B PG 13 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA FM805 UT WOS:A1991FM80500006 ER PT J AU MCMANAMY, TJ KANEMOTO, G SNOOK, P AF MCMANAMY, TJ KANEMOTO, G SNOOK, P TI INSULATION IRRADIATION TEST PROGRAM FOR THE COMPACT IGNITION TOKAMAK SO CRYOGENICS LA English DT Article; Proceedings Paper CT CONF ON NON-METALLIC MATERIALS AND COMPOSITES AT LOW TEMPERATURES CY MAY 17-18, 1990 CL HEIDELBERG, FED REP GER SP INT CRYOGEN MAT CONF BOARD DE INSULATION; TOKAMAK; RADIATION DAMAGE AB The electrical insulation for the toroidal field coils of the Compact Ignition Tokamak (CIT) is expected to be exposed to radiation doses of the order of 10(10) rad with almost-equal-to 90% of the dose from neutrons. The coils are cooled to liquid nitrogen temperature and then heated during the pulse to a peak temperature > 300 K. In a programme to evaluate the effects of radiation exposure on the insulators, three types of boron-free insulation were irradiated at room temperature in the Advanced Technology Reactor (ATR) and tested at the Idaho National Engineering Laboratory. The materials were Spaulrad-S, Shikishima PG5-1 and Shikishima PG3-1. The first two use a bismaleimide resin and the third an aromatic amine hardened epoxy. Spaulrad-S is a two-dimensional (2-D) weave of S-glass, while the others are 3-D weaves of T-glass. Flexure and shear/compression samples were irradiated to almost-equal-to 5 x 10(9) and 3 x 10(10) rad with 35-40% of the total dose from neutrons. The shear/compression samples were tested in pairs by applying an average compression of 345 MPa and then a shear load. After static tests were completed, fatigue testing was performed by cycling the shear load for up to 30 000 cycles with a constant compression. The static shear strength of the samples that did not fail was then determined. Generally, shear strengths of the order of 120 MPa were measured. The behaviour of the flexure and shear/compression samples was significantly different; large reductions in the flexure strength were observed, while the shear strength stayed the same or increased slightly. The 3-D weave material demonstrated higher strength and significantly less radiation damage than the 2-D material in flexure but performed almost identically when tested with combined shear and compression. The epoxy system was much more sensitive to fatigue damage than the bismaleimide materials. No swelling was measured; however, the epoxy samples did twist slightly. Shear tests of bonded samples without compression irradiated to the same dose levels are planned for 1990. Irradiation and testing at liquid nitrogen temperature are planned for 1991. C1 IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. PRINCETON UNIV,PRINCETON,NJ 08544. RP MCMANAMY, TJ (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 9 TC 8 Z9 8 U1 1 U2 1 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0011-2275 J9 CRYOGENICS JI Cryogenics PD APR PY 1991 VL 31 IS 4 BP 277 EP 281 DI 10.1016/0011-2275(91)90093-C PG 5 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA FG469 UT WOS:A1991FG46900017 ER PT J AU McCormick, A Campisi, J AF McCormick, Anna Campisi, Judith TI Cellular aging and senescence SO CURRENT OPINION IN CELL BIOLOGY LA English DT Article AB Differentiated eukaryotic cells have only a finite capacity for cell division. This limitation is thought to be a cellular manifestation of organismal aging, and a restraint to tumor progression. The molecular basis for cellular senescence is not known, but a molecular framework for understanding this phenomenon has recently been established. C1 [McCormick, Anna] NIA, Biol Aging Program, Bethesda, MD 20892 USA. [Campisi, Judith] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Cell & Mol Biol, Berkeley, CA 94720 USA. RP McCormick, A (reprint author), NIA, Biol Aging Program, Bethesda, MD 20892 USA. NR 30 TC 53 Z9 54 U1 0 U2 1 PU CURRENT BIOLOGY LTD PI LONDON PA 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND SN 0955-0674 EI 1879-0410 J9 CURR OPIN CELL BIOL JI Curr. Opin. Cell Biol. PD APR PY 1991 VL 3 IS 2 BP 230 EP 234 DI 10.1016/0955-0674(91)90144-N PG 5 WC Cell Biology SC Cell Biology GA V39FX UT WOS:000209398000011 PM 1883615 ER PT J AU FISHER, AT NARASHIMHAN, TN AF FISHER, AT NARASHIMHAN, TN TI NUMERICAL SIMULATIONS OF HYDROTHERMAL CIRCULATION RESULTING FROM BASALT INTRUSIONS IN A BURIED SPREADING CENTER SO EARTH AND PLANETARY SCIENCE LETTERS LA English DT Article ID MID-OCEAN RIDGES; HOT SPRINGS; THEORETICAL CONSTRAINTS; PHYSICAL-PROPERTIES; HIGH-TEMPERATURE; GUAYMAS BASIN; HEAT-FLOW; SEDIMENTS; SYSTEMS; PENETRATION AB A two-dimensional, one by two-kilometer section through the seafloor was simulated with a numerical model to investigate coupled fluid and heat flow resulting from basalt intrusions in a buried spreading center. Boundary and initial conditions and physical properties of both sediments and basalt were constrained by field surveys and drilling in the Guaymas Basin, central Gulf of California. Parametric variations in these studies included sediment and basalt permeability, anisotropy in sediment permeability, and the size of heat sources. Faults were introduced through new intrusions both before and after cooling. Background heat input caused fluid convection at velocities less-than-or-equal-to 3 cm a-1 through shallow sediments. Eighty to ninety percent of the heat introduced at the base of the simulations exited through the upper, horizontal surface, even when the vertical boundaries were made permeable to fluid flow. The simulated injection of a 25-50 m thick basalt intrusion at a depth of 250 m resulted in about 10 yr of pore-fluid expulsion through the sea-floor in all cases, leaving the sediments above the intrusions strongly underpressured. A longer period of fluid recharge followed, sometimes accompanied by reductions in total seafloor heat output of 10% in comparison to pre-intrusion values. Additional discharge-recharge events were dispersed chaotically through the duration of the cooling period. These cycles in heat and fluid flow resulted from the response of the simulated system to a thermodynamic shock, the sudden emplacement of a large heat source, and not from mechanical displacement of sediments and pore fluids, which was not simulated. Water/rock mass ratios calculated from numerical simulations are in good agreement with geochemical estimates from materials recovered from the Guaymas Basin, assuming a bulk basalt permeability value of at least 10(-17) m2 (10(-2) mD). The addition of faults through intrusions and sediments in these simulations did not facilitate continuous, rapid venting. Increased heat input at the base of the faults resulted in temporarily greater fluid discharge, but the flow could not be sustained because the modeled system could not recharge cold fluid quickly enough to remove sufficient heat through the vents. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV EARTH SCI,BERKELEY,CA 94720. RP FISHER, AT (reprint author), TEXAS A&M UNIV SYST,OCEAN DRILLING PROGRAM,1000 DISCOVERY DR,COLLEGE STN,TX 77845, USA. RI Fisher, Andrew/A-1113-2016 NR 47 TC 14 Z9 14 U1 0 U2 4 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 APR PY 1991 VL 103 IS 1-4 BP 100 EP 115 DI 10.1016/0012-821X(91)90153-9 PG 16 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FM721 UT WOS:A1991FM72100009 ER PT J AU GREENE, DL AF GREENE, DL TI A NOTE ON OPEC MARKET POWER AND OIL PRICES SO ENERGY ECONOMICS LA English DT Note DE PETROLEUM; CARTEL; OPEC PRICES ID WORLD RP GREENE, DL (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 25 TC 11 Z9 11 U1 1 U2 1 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0140-9883 J9 ENERG ECON JI Energy Econ. PD APR PY 1991 VL 13 IS 2 BP 123 EP 129 DI 10.1016/0140-9883(91)90044-Z PG 7 WC Economics SC Business & Economics GA FG474 UT WOS:A1991FG47400007 ER PT J AU HOWARTH, RB SCHIPPER, L DUERR, PA STROM, S AF HOWARTH, RB SCHIPPER, L DUERR, PA STROM, S TI MANUFACTURING ENERGY USE IN 8 OECD COUNTRIES - DECOMPOSING THE IMPACTS OF CHANGES IN OUTPUT, INDUSTRY STRUCTURE AND ENERGY INTENSITY SO ENERGY ECONOMICS LA English DT Article DE ENERGY USES; OECD; MANUFACTURING C1 UNIV OSLO,DEPT ECON,N-0317 OSLO 3,NORWAY. RP HOWARTH, RB (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,ENERGY ANAL PROGRAM,BERKELEY,CA 94530, USA. OI Howarth, Richard/0000-0003-3182-7345 NR 10 TC 107 Z9 116 U1 2 U2 4 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0140-9883 J9 ENERG ECON JI Energy Econ. PD APR PY 1991 VL 13 IS 2 BP 135 EP 142 DI 10.1016/0140-9883(91)90046-3 PG 8 WC Economics SC Business & Economics GA FG474 UT WOS:A1991FG47400009 ER PT J AU SCHIPPER, L HAWK, DV AF SCHIPPER, L HAWK, DV TI MORE EFFICIENT HOUSEHOLD ELECTRICITY-USE - AN INTERNATIONAL PERSPECTIVE SO ENERGY POLICY LA English DT Article DE APPLIANCES; HOUSEHOLDS; ELECTRICITY AB Since 1973 the efficiency of most energy uses in homes has improved throughout the OECD. 1 This means that to provide a given amount of energy service (for example, heating, cooling, locomotion or mechanical force), less energy is required today than was needed in the past. These improvements have been gained through the introduction of new appliances and, for space heating and cooling, new homes with more efficient building shells and the retrofitting of the existing building stock. In this report we analyse some of the past changes in the efficiency of household appliance electricity use, and discuss prospects for, and barriers to, further increases in the future. RP SCHIPPER, L (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV APPL SCI,ENERGY ANAL PROGRAM,BERKELEY,CA 94720, USA. NR 36 TC 20 Z9 20 U1 0 U2 7 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0301-4215 J9 ENERG POLICY JI Energy Policy PD APR PY 1991 VL 19 IS 3 BP 244 EP 265 DI 10.1016/0301-4215(91)90150-M PG 22 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA FF389 UT WOS:A1991FF38900008 ER PT J AU ABBOTT, ML FRALEY, L REYNOLDS, TD AF ABBOTT, ML FRALEY, L REYNOLDS, TD TI ROOT PROFILES OF SELECTED COLD DESERT SHRUBS AND GRASSES IN DISTURBED AND UNDISTURBED SOILS SO ENVIRONMENTAL AND EXPERIMENTAL BOTANY LA English DT Article ID PHOSPHORUS; PLANT AB The root depths and maximum lateral spreads of two shrubs and four perennial grass species were examined in disturbed (backfilled) and undisturbed soil using I-131 as a soil injected radiotracer. Although individual species differences were found, root distributions were not universally larger in one soil type or another. Big sagebrush (Artemisia tridentata ssp. wyomingensis) roots were detected deeper in the undisturbed soil (1.00 vs 0.75 m), while green rabbitbrush (Chrysothamnus viscidiflorus) roots were detected deeper in undisturbed soil (1.00 vs 0.50 m). Streambank wheatgrass (Elymus lanceolatus) and crested wheatgrass (Agropyron cristatum) roots were detected deeper in disturbed soil (1.00 m vs 0.75 m). Basin wildrye (Leymus cinereus) exhibited the greatest lateral root spread (0.90 m). Soil moisture, rather than soil disturbance, seemed to dictate root depth. C1 US DOE,RADIOL & ENVIRONM SCI LAB,IDAHO FALLS,ID 83402. NR 40 TC 18 Z9 19 U1 0 U2 11 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0098-8472 J9 ENVIRON EXP BOT JI Environ. Exp. Bot. PD APR PY 1991 VL 31 IS 2 BP 165 EP 178 DI 10.1016/0098-8472(91)90067-X PG 14 WC Plant Sciences; Environmental Sciences SC Plant Sciences; Environmental Sciences & Ecology GA FL789 UT WOS:A1991FL78900005 ER PT J AU BRUNS, DA AF BRUNS, DA TI ECOLOGICAL MONITORING FOR GLOBAL CHANGE SO ENVIRONMENTAL MONITORING AND ASSESSMENT LA English DT Editorial Material RP BRUNS, DA (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,CTR ENVIRONM MONITORING & ASSESSMENT,POB 1625,IDAHO FALLS,ID 83401, USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0167-6369 J9 ENVIRON MONIT ASSESS JI Environ. Monit. Assess. PD APR PY 1991 VL 17 IS 1 BP 1 EP 1 DI 10.1007/BF00402458 PG 1 WC Environmental Sciences SC Environmental Sciences & Ecology GA FG673 UT WOS:A1991FG67300001 PM 24233370 ER PT J AU BRUNS, DA WIERSMA, GB RYKIEL, EJ AF BRUNS, DA WIERSMA, GB RYKIEL, EJ TI ECOSYSTEM MONITORING AT GLOBAL BASE-LINE SITES SO ENVIRONMENTAL MONITORING AND ASSESSMENT LA English DT Article AB Integrated ecosystem and pollutant monitoring is being conducted at prototype global baseline sites in remote areas of the Noatak National Preserve, Alaska, the Wind River Mountains, Wyoming, and Torres del Paine National Park, Chile. A systems approach has been used in the design of these projects. This approach includes: (1) evaluation of source-receptor relationships, (2) multimedia (i.e., air, water, soil, biota) monitoring of key contaminant pathways within the environment, (3) the use of selected ecosystem parameters to detect anthropogenic influence, and (4) the application of a systems conceptual framework as a heuristic tool. Initial short-term studies of air quality (e.g. SO2, NO2) plus trace metal concentrations in mosses generally indicate pristine conditions at all three of the above sites as expected although trace metals in mosses were higher at the Wyoming site. Selected ecosystem parameters for both terrestrial (e.g. litter decomposition) and aquatic (e.g. shredders, a macroinvertebrate functional feeding group) habitats at the Wyoming site reflected baseline conditions when compared to other studies. Plans also are being made to use U.S. Department of Energy Research Parks for global change monitoring. This will involve cross-site analyses of existing ecological databases and the design of a future monitoring network based on a systems approach as outlined in this paper. RP BRUNS, DA (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 0 TC 14 Z9 14 U1 1 U2 7 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0167-6369 J9 ENVIRON MONIT ASSESS JI Environ. Monit. Assess. PD APR PY 1991 VL 17 IS 1 BP 3 EP 31 DI 10.1007/BF00402459 PG 29 WC Environmental Sciences SC Environmental Sciences & Ecology GA FG673 UT WOS:A1991FG67300002 PM 24233371 ER PT J AU LEVINE, MD MEYERS, SP WILBANKS, T AF LEVINE, MD MEYERS, SP WILBANKS, T TI ENERGY EFFICIENCY AND DEVELOPING-COUNTRIES SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,ENERGY CONSERVAT PROGRAM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,INT ENERGY STUDIES GRP,BERKELEY,CA 94720. OAK RIDGE NATL LAB,OAK RIDGE,TN. RP LEVINE, MD (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,ENERGY ANAL PROGRAM,BERKELEY,CA 94720, USA. NR 20 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD APR PY 1991 VL 25 IS 4 BP 584 EP 589 DI 10.1021/es00016a602 PG 6 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA FE652 UT WOS:A1991FE65200007 ER PT J AU WEINSTEINLLOYD, J SCHWARTZ, SE AF WEINSTEINLLOYD, J SCHWARTZ, SE TI LOW-INTENSITY RADIOLYSIS STUDY OF FREE-RADICAL REACTIONS IN CLOUDWATER - H2O2 PRODUCTION AND DESTRUCTION SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID RATE CONSTANTS; HYDROGEN-PEROXIDE; AQUEOUS-SOLUTIONS; PULSE-RADIOLYSIS; CHEMISTRY; SULFITE; CLOUDS; OZONE; PRECIPITATION; TROPOSPHERE AB Reactions in cloudwater can be important pathways for chemical transformation of atmospheric trace gases. One such reaction is the oxidation of dissolved sulfur dioxide by hydrogen peroxide. H2O2 is formed by the disproportionation of hydroperoxyl and superoxide radicals, O2(-I). We report measurements of the rate of H2O2 production from O2(-I) radicals generated by low-intensity cobalt-60 radiolysis of synthetic cloudwater solutions and actual precipitation samples. Our results, employing O2(-I) production rates comparable to those expected upon transfer of HO2 from interstitial cloud air to cloudwater, confirm model predictions that H2O2 production is frequently the major fate of O2(-I) radicals. However, there is evidence of significant reaction between S(IV) and O2 (-I), with a rate coefficient of (3 +/- 2) X 10(4) at pH 4.96. In addition, the presence of 1-mu-M dissolved iron decreases the H2O2 yield, principally because of destruction of H2O2 by Fe(II). C1 BROOKHAVEN NATL LAB,DIV ENVIRONM CHEM,UPTON,NY 11973. RI Schwartz, Stephen/C-2729-2008 OI Schwartz, Stephen/0000-0001-6288-310X NR 46 TC 28 Z9 28 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD APR PY 1991 VL 25 IS 4 BP 791 EP 800 DI 10.1021/es00016a027 PG 10 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA FE652 UT WOS:A1991FE65200035 ER PT J AU STABIN, MG STUBBS, JB WATSON, EE AF STABIN, MG STUBBS, JB WATSON, EE TI DOSIMETRY OF SWALLOWED NONABSORBED TECHNETIUM 99M RADIOPHARMACEUTICALS IN PEDIATRIC-PATIENTS SO EUROPEAN JOURNAL OF NUCLEAR MEDICINE LA English DT Letter ID INFANTS RP STABIN, MG (reprint author), OAK RIDGE ASSOCIATED UNIV,DIV MED SCI,CTR RADIOPHARMACEUT INTERNAL DOSE INFORMAT,OAK RIDGE,TN 37830, USA. NR 15 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0340-6997 J9 EUR J NUCL MED JI Eur. J. Nucl. Med. PD APR PY 1991 VL 18 IS 4 BP 287 EP 289 PG 3 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA FJ394 UT WOS:A1991FJ39400012 ER PT J AU JETTER, M WEBER, F WEIGEL, MK AF JETTER, M WEBER, F WEIGEL, MK TI DETERMINATION OF THE EFFECTIVE LAGRANGIAN IN THE RELATIVISTIC HARTREE-FOCK THEORY SO EUROPHYSICS LETTERS LA English DT Article ID MEAN-FIELD-THEORY; NUCLEAR-MATTER; STATE; EQUATION AB Due to the phenomenological character of the basic relativistic Hartree-Fock theory one has to adjust the effective Lagrangian to (basic) nuclear properties, which are not accurately known. The flexibility and capability of different Lagrangians in reproducing the bandwidth of nuclear parameters is investigated and discussed. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. RP JETTER, M (reprint author), UNIV MUNICH,SEKT PHYS,AM COULOMBWALL 1,W-8046 GARCHING,GERMANY. NR 28 TC 8 Z9 8 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 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD APR 1 PY 1991 VL 14 IS 7 BP 633 EP 638 DI 10.1209/0295-5075/14/7/004 PG 6 WC Physics, Multidisciplinary SC Physics GA FG671 UT WOS:A1991FG67100004 ER PT J AU COOK, CS GENEROSO, WM HESTER, D PEIFFER, RL AF COOK, CS GENEROSO, WM HESTER, D PEIFFER, RL TI RPE DYSPLASIA WITH RETINAL DUPLICATION IN A MUTANT MOUSE STRAIN SO EXPERIMENTAL EYE RESEARCH LA English DT Article DE RETINAL DEVELOPMENT; RPE DYSPLASIA; MUTATION; ANIMAL MODEL ID GAP JUNCTIONS; CHICK; EPITHELIUM; EYE C1 OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831. UNIV N CAROLINA,DEPT OPHTHALMOL,CHAPEL HILL,NC 27514. RP COOK, CS (reprint author), UNIV CALIF SAN FRANCISCO,DEPT GROWTH & DEV,BOX 0640,SAN FRANCISCO,CA 94143, USA. FU NEI NIH HHS [R01 EY08147, 1F32 EY05918] NR 12 TC 8 Z9 8 U1 0 U2 2 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0014-4835 J9 EXP EYE RES JI Exp. Eye Res. PD APR PY 1991 VL 52 IS 4 BP 409 EP 415 DI 10.1016/0014-4835(91)90036-E PG 7 WC Ophthalmology SC Ophthalmology GA FL470 UT WOS:A1991FL47000006 PM 2037019 ER PT J AU WYNGAARD, GA TAYLOR, BE MAHONEY, DL AF WYNGAARD, GA TAYLOR, BE MAHONEY, DL TI EMERGENCE AND DYNAMICS OF CYCLOPOID COPEPODS IN AN UNPREDICTABLE ENVIRONMENT SO FRESHWATER BIOLOGY LA English DT Article ID TEMPORARY POND AB 1. We studied species composition, abundance and population dynamics of cyclopoid copepods emerging from dormancy from the sediments of a temporary pond in South Carolina in 1985, 1988 and 1989. During a drought in 1988-89, the maximum hydroperiod was 19 days; in 1985 and late 1989-early 1990, the hydroperiods were 57 and 118 days. We also report on species present in 1984 and 1987, two years that had longer hydroperiods, and on abundance of cyclopoids in 1984. 2. Within a day after standing water appeared, fourth-instar copepodids of Diacyclops haueri and D. crassicaudis brachycercus became active. These two species appeared every time the pond filled in winter, spring, or autumn. Other species, including Acanthocyclops vernalis, were usually not collected until weeks or months after the pond filled. Because the times and durations of fillings were extremely variable, species composition differed among years, with the most species (eleven) appearing in 1984, the year with the longest hydroperiod. 3. The abundances of emerging Diacyclops were much lower in 1988 and 1989 (range of means from seven fillings in spring and autumn: 675-7382 animals m-2) than 1985 (range of means from three fillings in winter: 26,037-107,418 animals m-2). Low abundances of emerging animals could have been caused by poor survival of dormant animals, poor production during preceding seasons, or incomplete emergence of the dormant populations. 4. Substrate samples from the dry pond were collected in spring, summer, and autumn 1988 and winter 1989 to measure emergence of the cyclopoids in laboratory incubations. Population densities of emerging animals were much lower in 1988 and 1989 (range of means from seven experiments: 0-120 animals m-2 over the first 3 days) than in similar experiments in 1984 (Taylor & Mahoney, 1990, means from two experiments: 3630 and 6890 animals m-2). 5. Despite the low abundance of animals emerging from dormancy in late 1989, the cyclopoid populations in 1990 reached similar densities of copepodids (10(4)-10(5) animals m-2) to those reached in 1984 and 1985. These results suggest that short generation time and high reproductive capacity permit rapid recovery from population reductions. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29801. RP WYNGAARD, GA (reprint author), JAMES MADISON UNIV,DEPT BIOL,HARRISONBURG,VA 22807, USA. NR 23 TC 42 Z9 43 U1 0 U2 4 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0046-5070 J9 FRESHWATER BIOL JI Freshw. Biol. PD APR PY 1991 VL 25 IS 2 BP 219 EP 232 DI 10.1111/j.1365-2427.1991.tb00487.x PG 14 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA FR304 UT WOS:A1991FR30400004 ER PT J AU SCHMIDT, JA AF SCHMIDT, JA TI IGNITION WITH HIGH-FIELD, COMPACT TOKAMAKS SO FUSION ENGINEERING AND DESIGN LA English DT Article; Proceedings Paper CT 16TH SYMP ON FUSION TECHNOLOGY ( SOFT ) CY SEP 03-07, 1990 CL LONDON, ENGLAND AB Compact, high-field experiments offer the most direct path to study burning plasma behavior. Several designs for these experiments have been proposed. The IGNITOR device has been proposed for construction at Ispra in northern Italy, and the CIT device has been proposed for construction at Princeton, N.J., in the USA. The programmatic role of these experiments is to build significantly on the achievements of JET, TFTR and JT-60, while setting goals that are modest, technically and financially, relative to an experimental test reactor such as ITER. RP SCHMIDT, JA (reprint author), PRINCETON PLASMA PHYS LAB,CIT DESIGN TEAM,PRINCETON,NJ, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD APR PY 1991 VL 14 IS 1-2 BP 21 EP 24 DI 10.1016/0920-3796(91)90230-N PG 4 WC Nuclear Science & Technology SC Nuclear Science & Technology GA FJ693 UT WOS:A1991FJ69300004 ER PT J AU TORTORELLI, PF AF TORTORELLI, PF TI DEPOSITION BEHAVIOR OF FERROUS-ALLOYS IN MOLTEN LEAD LITHIUM SO FUSION ENGINEERING AND DESIGN LA English DT Article AB The mass transfer of type 316 stainless steel in Pb-17 at% Li was studied using a thermal convection loop operating at a maximum temperature of 500-degrees-C to generate mass change and surface composition data as a function of time and loop position. Data analysis indicated that particles suspended in the flowing liquid metal (particularly those containing nickel) probably played a significant role in overall transport and deposition. There was also some evidence of physical detachment of deposits. The deposition of chromium (but not nickel) correlated with the temperature dependence of solubility, as did previous weight change results from a study of ferritic (Fe-Cr) steels in nonisothermal Pb-17 at% Li. Due to the influence of particulate matter in the liquid metal and deposit detachment, mass transfer prediction for austenitic (Fe-Cr-Ni) steels in Pb-17 at% should be more complicated than that for Fe-Cr steels. RP TORTORELLI, PF (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. RI Tortorelli, Peter/E-2433-2011 NR 17 TC 10 Z9 10 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD APR PY 1991 VL 14 IS 3-4 BP 335 EP 345 DI 10.1016/0920-3796(91)90017-K PG 11 WC Nuclear Science & Technology SC Nuclear Science & Technology GA FK746 UT WOS:A1991FK74600017 ER PT J AU TKACHUK, DC PINKEL, D KUO, WL WEIER, HU GRAY, JW AF TKACHUK, DC PINKEL, D KUO, WL WEIER, HU GRAY, JW TI CLINICAL-APPLICATIONS OF FLUORESCENCE INSITU HYBRIDIZATION SO GENETIC ANALYSIS-BIOMOLECULAR ENGINEERING LA English DT Article ID CHROMOSOME-ABERRATIONS; DNA-SEQUENCES; CYTOGENETIC ANALYSIS; RAPID DETECTION; REPETITIVE DNA; TUMOR-CELLS; PROBES; INTERPHASE; LOCALIZATION; LIBRARIES AB We review here the application of fluorescence in situ hybridization with chromosome-specific probes to chromosome classification and to detection of changes in chromosome number or structure associated with genetic disease. Information is presented on probe types that are available for disease detection. We discuss the application of these probes to detection of numerical aberrations important for prenatal diagnosis and to detection and characterization of numerical and structural aberrations in metaphase spreads and in interphase nuclei to facilitate tumor diagnosis. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV BIOMED SCI,POB 5507,LIVERMORE,CA 94550. STANFORD UNIV,MED CTR,DEPT PATHOL,STANFORD,CA 94305. FU NCI NIH HHS [CA 17665, CA 45919] NR 50 TC 81 Z9 86 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1050-3862 J9 GENET ANAL-BIOMOL E JI Genet. Anal.-Biomol. Eng. PD APR PY 1991 VL 8 IS 2 BP 67 EP 74 DI 10.1016/1050-3862(91)90051-R PG 8 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Genetics & Heredity SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity GA FP817 UT WOS:A1991FP81700003 PM 2064821 ER PT J AU LEWAN, MD ULMISHEK, GF HARRISON, W SCHREINER, F AF LEWAN, MD ULMISHEK, GF HARRISON, W SCHREINER, F TI GAMMA-CO-60-IRRADIATION OF ORGANIC-MATTER IN THE PHOSPHORIA RETORT SHALE SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID THERMAL MATURATION; SEDIMENTARY-ROCKS; HYDROUS PYROLYSIS; CARBON ISOTOPES; URANIUM DECAY; IRRADIATION; RADIOLYSIS; SWEDEN AB Irradiation experiments were conducted on a thermally immature rock sample of the Phosphoria Retort Shale and its isolated kerogen. A Co-60-source for gamma radiation was employed at dosages ranging from 81 to 885 Mrads, which are attainable by Paleozoic and Precambrian black shales with syngenetic uranium enrichments. Kerogen elemental, isotopic, and pyrolysate compositions are not affected at these dosages, but the bitumens extracted from the irradiated rock are affected. The major effects are reductions in the amounts of bitumen, acyclic isoprenoids, and high-molecular weight acyclic carboxylic acids. Natural differences in the amounts of bitumen and acyclic isoprenoid due to regional and stratigraphic variations in organic source input and depositional conditions make the radiation-induced reductions in these parameters difficult to use as indicators of natural radiation damage in black shales. However, the preferential reduction in the high-molecular weight acyclic carboxylic acids, which are ubiquitous in the living precursory organic matter, is diagnostic of experimental gamma-irradiation but may not be diagnostic of natural irradiation. The overall process associated with radiation damage is polymerization by cross-linking through a free radical mechanism. As a result, irradiation of organic matter in black shales is more likely to retard rather than enhance petroleum generation. C1 AMOCO PROD CO,RES CTR,TULSA,OK 74102. ARGONNE NATL LAB,ARGONNE,IL 60439. NR 57 TC 7 Z9 7 U1 2 U2 7 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 APR PY 1991 VL 55 IS 4 BP 1051 EP 1063 DI 10.1016/0016-7037(91)90163-Y PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FH322 UT WOS:A1991FH32200012 ER PT J AU MESMER, RE AF MESMER, RE TI A NEW APPROACH TO MEASURING PH IN BRINES AND OTHER CONCENTRATED ELECTROLYTES - COMMENT SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Letter RP MESMER, RE (reprint author), OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831, USA. NR 5 TC 27 Z9 27 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 APR PY 1991 VL 55 IS 4 BP 1175 EP 1176 DI 10.1016/0016-7037(91)90171-Z PG 2 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FH322 UT WOS:A1991FH32200020 ER PT J AU KNAUSS, KG WOLERY, TJ JACKSON, KJ AF KNAUSS, KG WOLERY, TJ JACKSON, KJ TI A NEW APPROACH TO MEASURING PH IN BRINES AND OTHER CONCENTRATED ELECTROLYTES - REPLY SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Letter RP KNAUSS, KG (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT EARTH SCI,LIVERMORE,CA 94550, USA. RI knauss, kevin/K-2827-2012; jackson, Kenneth/E-2236-2013 OI jackson, Kenneth/0000-0003-4231-3809 NR 18 TC 7 Z9 7 U1 0 U2 7 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 APR PY 1991 VL 55 IS 4 BP 1177 EP 1179 DI 10.1016/0016-7037(91)90172-2 PG 3 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FH322 UT WOS:A1991FH32200021 ER PT J AU SMITH, BM REYNOLDS, SJ DAY, HW BODNAR, RJ AF SMITH, BM REYNOLDS, SJ DAY, HW BODNAR, RJ TI DEEP-SEATED FLUID INVOLVEMENT IN DUCTILE-BRITTLE DEFORMATION AND MINERALIZATION, SOUTH MOUNTAINS METAMORPHIC CORE COMPLEX, ARIZONA SO GEOLOGICAL SOCIETY OF AMERICA BULLETIN LA English DT Article ID DETACHMENT ZONES; MYLONITIZATION; INCLUSIONS; DIFFUSION; O-18/O-16; OXYGEN; REGIMES; QUARTZ; ALBITE; ROCKS AB In the South Mountains metamorphic core complex of central Arizona, a middle Tertiary pluton exhibits the entire spectrum of ductile-to-brittle structures characteristic of metamorphic core complexes. Apart from minor Cu-enrichments in brecciated samples, original major- and minor-element abundances of the deformed igneous rocks are remarkably undisturbed, and there is little correspondence between chemical composition and deformational state. Similarly, biotite and feldspar behaved almost isochemically during deformation except in the most severely deformed samples, where plagioclase became somewhat more sodic and where biotite lost (Fe + Mg) relative to (Al + Ti) and was partly converted to vermiculite. The oxygen- and hydrogen-isotope compositions of the samples are also quite uniform and are typical for continental granitoid rocks. The range in whole-rock delta-O-18 values is extremely limited for the entire suite (8.3 parts-per-thousand to 9.9 parts-per-thousand versus V-SMOW), from undeformed granodiorite to mylonite, green breccia, and microbreccia. Although delta-O-18 values for quartz (9.4 parts-per-thousand to 11.2 parts-per-thousand) and feldspar (7.8 parts-per-thousand to 9.2 parts-per-thousand) are similarly restricted, the highest values occur in the most strongly deformed samples. Variably vermiculitic biotite has mildly and apparently randomly disturbed delta-O-18 values (4.9 parts-per-thousand to 6.0 parts-per-thousand), but delta-D values (-75 parts-per-thousand +/- 4 parts-per-thousand) are remarkably uniform and are typical for "unaltered" plutonic rocks. The delta-O-18 values of barren, ductilely deformed quartz veins (9.1 parts-per-thousand to 9.7 parts-per-thousand) and of late, brittley deformed gangue quartz from the Max Delta gold mine (12.1 parts-per-thousand) are consistent with the persistent circulation of a single, isotopically uniform fluid reservoir at temperatures from approximately 600-degrees-C ductile deformation, barren quartz veins) to approximately 400-degrees-C (brittle deformation, mineralized quartz veins). The inferred fluid delta-O-18 (approximately +7 parts-per-thousand) and delta-D (approximately -35 parts-per-thousand) values imply a deep-seated, igneous or high-T metamorphic origin for the fluids. Fluids present during the entire history of ductile-to-brittle deformation were apparently close to chemical and oxygen/hydrogen-isotope equilibrium with the rocks. The temporal association of deformation with Tertiary plutonism and the evidence for high-temperature fluid/rock near-equilibrium support the interpretation that the fluids were expelled from differentiated, late crystallizing portions of the South Mountains plutonic complex. C1 ARIZONA GEOL SURVEY,TUCSON,AZ 85719. UNIV CALIF DAVIS,DEPT GEOL,DAVIS,CA 95616. VIRGINIA POLYTECH INST & STATE UNIV,DEPT GEOL SCI,BLACKSBURG,VA 24061. RP SMITH, BM (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV EARTH SCI,CTR ISOTOPE GEOCHEM,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. RI Bodnar, Robert/A-1916-2009 NR 44 TC 26 Z9 26 U1 0 U2 3 PU GEOLOGICAL SOC AMERICA PI BOULDER PA PO BOX 9140 3300 PENROSE PLACE, BOULDER, CO 80301 SN 0016-7606 J9 GEOL SOC AM BULL JI Geol. Soc. Am. Bull. PD APR PY 1991 VL 103 IS 4 BP 559 EP 569 DI 10.1130/0016-7606(1991)103<0559:DSFIID>2.3.CO;2 PG 11 WC Geosciences, Multidisciplinary SC Geology GA FE845 UT WOS:A1991FE84500010 ER PT J AU VASCO, DW AF VASCO, DW TI BOUNDING SEISMIC VELOCITIES USING A TOMOGRAPHIC METHOD SO GEOPHYSICS LA English DT Article ID LINEAR INVERSE PROBLEMS; POSITIVITY CONSTRAINTS; OPTIMIZATION; INADEQUATE AB Traveltime data are used to determine upper and lower bounds on velocity variations in the earth by an iterative method. In effect, the range of models is found which is consistent with the data, rather than a single model which is "best fitting" in some sense. The algorithm used, a variant of the row-action algorithms commonly applied to tomographic inversions, requires little in-core memory and has proven feasible for data sets of the order of hundreds of thousands to a million traveltimes. Any inequality constraint, such as that the velocity is always positive, may be incorporated into the formulation. Data errors can be included both locally (as strict constraints on each datum) and globally (as a constraint on a total error measure). The method may also be used to derive the velocity structure which results in the minimum l1 norm of the residual misfit. Data from the Grimsel crosshole experiment are used to map confidence bounds of 0.02 ms on 1521 traveltime residuals into upper and lower bounds on seismic velocities. There is great variation in the widths of these bounds as a function of subsurface position from 0.1 to 0.9 km/s. The distributions of the bounds agree with the parameter resolution values found from a singular value decomposition (SVD) and suggest that a low-velocity mylonitic zone, seen in tomographic inversions of the traveltime data, is adequately imaged. Though the data were corrected for seismic anisotropy, significant alternating positive and negative velocity pertubations in poorly constrained quadrants of the crosshole region suggest that some residual anisotropy effects are still present. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV EARTH SCI,CTR COMPUTAT SEISMOL,BERKELEY,CA 94720. RP VASCO, DW (reprint author), UNIV CALIF BERKELEY,DEPT GEOL & GEOPHYS,BERKELEY,CA 94720, USA. RI Vasco, Donald/I-3167-2016 OI Vasco, Donald/0000-0003-1210-8628 NR 27 TC 20 Z9 20 U1 0 U2 1 PU SOC EXPLORATION GEOPHYSICISTS PI TULSA PA 8801 S YALE ST, TULSA, OK 74137 SN 0016-8033 J9 GEOPHYSICS JI Geophysics PD APR PY 1991 VL 56 IS 4 BP 472 EP 482 DI 10.1190/1.1443064 PG 11 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FG067 UT WOS:A1991FG06700005 ER PT J AU LESSOR, DL EYLER, LL LOWERY, PS AF LESSOR, DL EYLER, LL LOWERY, PS TI JOULE HEAT CALCULATIONS FOR SIMULATIONS OF MULTIELECTRODE GLASS MELTERS AND INSITU VITRIFICATION SYSTEMS SO GLASTECHNISCHE BERICHTE-GLASS SCIENCE AND TECHNOLOGY LA English DT Article ID MATHEMATICAL-MODEL; FLOW AB A procedure is developed for calculating Joule heating power density in simulating multielectrode, multiphase, generalized waveform electrically heated glass melters and in situ vitrification systems. A superposition principle valid at low frequencies allows calculating the cycle-averaged power density from a set of potential amplitude solutions, each solution having a current source amplitude in one electrode and a current sink amplitude in another electrode of a driven electrode pair. The calculated cycle-averaged power density can be coupled to balance equations for flow and energy in molten glass or soil. The procedure has advantages over the complex harmonic form for analyzing systems having waveforms chopped by silicon controlled rectifiers. A Scott-T transformer configuration with two emfs driving diagonally opposite electrodes in a rectangular array is one configuration having practical significance. Symmetries of this configuration are affected by amplitudes, phase relations, and waveforms of the electrical driving. RP LESSOR, DL (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 16 TC 1 Z9 1 U1 0 U2 2 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 APR PY 1991 VL 64 IS 4 BP 95 EP 105 PG 11 WC Materials Science, Ceramics SC Materials Science GA FN547 UT WOS:A1991FN54700001 ER PT J AU KATHREN, RL MCINROY, JF AF KATHREN, RL MCINROY, JF TI COMPARISON OF SYSTEMIC PLUTONIUM DEPOSITION ESTIMATES FROM URINALYSIS AND AUTOPSY DATA IN 5 WHOLE-BODY DONORS SO HEALTH PHYSICS LA English DT Article ID EXCRETION; PU AB The systemic deposition of Pu-239+240 was determined by postmortem radiochemical analysis of the tissues from five whole-body donors to the United States Transuranium Registry (USTR). All were males with intakes typically occurring many years prior to death. The postmortem radiochemical results were compared with estimates of systemic deposition made with 13 different biokinetic models using urinary excretion data obtained during life. In general, estimates made with older biokinetic models were severalfold greater than those obtained from radiochemical analysis of the tissues. For all five cases, agreement within a factor of two with the tissue analysis results was obtained with two of the biokinetic models evaluated: the Langham power function model as modified by Leggett and Eckerman and the two compartment exponential model proposed in ICRP Publication Nos. 19 and 30. C1 UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87544 USA. RP KATHREN, RL (reprint author), HANFORD ENVIRONM HLTH FDN, US TRANSURANIUM REGISTRY, POB 100, RICHLAND, WA 99352 USA. RI WSU, USTUR/I-1056-2013 NR 36 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 APR PY 1991 VL 60 IS 4 BP 481 EP 488 DI 10.1097/00004032-199104000-00001 PG 8 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 FD282 UT WOS:A1991FD28200001 PM 2001943 ER PT J AU MARTZ, DE GEORGE, JL LANGNER, GH AF MARTZ, DE GEORGE, JL LANGNER, GH TI COMPARATIVE PERFORMANCE OF SHORT-TERM DIFFUSION BARRIER CHARCOAL CANISTERS AND LONG-TERM ALPHA-TRACK MONITORS FOR INDOOR RN-222 MEASUREMENTS SO HEALTH PHYSICS LA English DT Article ID ACTIVATED CARBON; ADSORPTION AB The accuracy and precision of indoor Rn-222 measurements obtained with the use of diffusion barrier charcoal canisters (DBCC) under actual field conditions were determined by comparing the integrated average of 26 successive 7-d exposures of DBCC in each of 16 occupied residences over a 6-mo period with simultaneous measurements using four types of commercially available alpha-track monitors (ATM) and one type of scintillation chamber continuous Rn-222 monitor. The results suggest that properly calibrated DBCCs provide very good estimates of the integrated Rn-222 concentrations in residential structures over the standard 1-wk exposure period despite the occurrence of large diurnal variations in the actual Rn-222 concentrations. The results also suggest that a relatively small number of 1-wk DBCC measurements at selected times throughout the calendar year would provide estimates of the annual average indoor Rn-222 concentrations that compare favorably with single long-term ATM measurements. RP MARTZ, DE (reprint author), US DOE, CHEM NUCL GEOTECH INC, GRAND JUNCT PROJECTS OFF, POB 14000, GRAND JUNCTION, CO 81502 USA. NR 11 TC 8 Z9 8 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 APR PY 1991 VL 60 IS 4 BP 497 EP 505 DI 10.1097/00004032-199104000-00003 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 FD282 UT WOS:A1991FD28200003 PM 2001945 ER PT J AU KOCHER, DC AF KOCHER, DC TI A VALIDATION TEST OF A MODEL FOR LONG-TERM RETENTION OF I-129 IN SURFACE SOILS SO HEALTH PHYSICS LA English DT Article ID IODINE; ENVIRONMENT; C-14 AB A linear compartment model for global transport of iodine that we previously developed predicted that the mean residence time of iodine in the first 1 m of surface soil is about 4,000 y. An independent test of the model prediction is provided by measured depth profiles of I-129 in soil following atmospheric releases from the Savannah River Plant (SRP) in South Carolina and from the Karlsruhe fuel reprocessing plant in Germany. Previous analyses of these data using a linear compartment model for downward transport through soil indicated that the mean residence time in the first 0.3 m is about 40 y at both locations, which suggests that removal of I-129 from surface soil may be considerably more rapid than predicted by the global transport model. In this paper, a diffusion model is used to describe the measured soil profiles of I-129 at Savannah River. The diffusion coefficient obtained from the analysis corresponds to a mean residence time in the first 1 m of surface soil that agrees semi-quantitatively with the prediction of the global model when the concentration of naturally occurring stable iodine in soil and the flux of iodine from the atmosphere onto surface soil at Savannah River, as they differ from globally averaged values, are considered. This paper also discusses (1) the importance of the mean residence time of I-129 in surface soil for estimates of dose to individuals from near-surface land disposal of low-level radioactive wastes and (2) unresolved issues regarding global cycling of iodine. RP KOCHER, DC (reprint author), OAK RIDGE NATL LAB, DIV HLTH & SAFETY RES, POB 2008, OAK RIDGE, TN 37831 USA. NR 25 TC 12 Z9 12 U1 0 U2 4 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 APR PY 1991 VL 60 IS 4 BP 523 EP 531 DI 10.1097/00004032-199104000-00006 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 FD282 UT WOS:A1991FD28200006 PM 2001948 ER PT J AU WILSON, JW CUCINOTTA, FA HAJNAL, F AF WILSON, JW CUCINOTTA, FA HAJNAL, F TI ANALYTICAL RELATIONSHIPS OF NUCLEAR-FIELD AND MICRODOSIMETRIC QUANTITIES FOR TARGET FRAGMENTATION IN TISSUE SYSTEMS SO HEALTH PHYSICS LA English DT Article ID WATER AB A simple analytic formula for the nuclear fields formed by target fragmentation in tissue systems is derived using the continuous slowing down approximation (CSDA). The energy fluctuations in sensitive localized sites within the tissue system caused by these nuclear events are defined by microdosimetry. In that CSDA is used, the energy fluctuations exclude the role of secondary electrons. The relations also relate to the response of microdosimetric devices to nuclear fragmentation fields. C1 US DOE, ENVIRONM MEASUREMENTS LAB, NEW YORK, NY 10014 USA. RP WILSON, JW (reprint author), NASA, LANGLEY RES CTR, HAMPTON, VA 23665 USA. NR 19 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 APR PY 1991 VL 60 IS 4 BP 559 EP 565 DI 10.1097/00004032-199104000-00010 PG 7 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 FD282 UT WOS:A1991FD28200010 PM 2001952 ER PT J AU TURNER, JE HUSTON, TE AF TURNER, JE HUSTON, TE TI ALDOSE - A COMPUTER CODE TO CALCULATE ABSORBED-DOSE RATE, DOSE-EQUIVALENT RATE, AND DOSE-WEIGHTED LET AS FUNCTIONS OF DEPTH IN WATER IRRADIATED BY AN ALPHA-PARTICLE DISK SOURCE SO HEALTH PHYSICS LA English DT Note RP TURNER, JE (reprint author), OAK RIDGE NATL LAB, DIV HLTH & SAFETY RES, POB 2008, OAK RIDGE, TN 37831 USA. NR 2 TC 5 Z9 5 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 APR PY 1991 VL 60 IS 4 BP 581 EP 585 DI 10.1097/00004032-199104000-00015 PG 5 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 FD282 UT WOS:A1991FD28200015 PM 2001957 ER PT J AU RUNDO, J AF RUNDO, J TI ETHICS AND COMMUNICATION - REPLY SO HEALTH PHYSICS LA English DT Letter RP RUNDO, J (reprint author), ARGONNE NATL LAB, DIV BIOL & MED RES, 9700 S CASS AVE, ARGONNE, IL 60439 USA. NR 1 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 APR PY 1991 VL 60 IS 4 BP 603 EP 604 PG 2 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 FD282 UT WOS:A1991FD28200019 PM 2001961 ER PT J AU POWERS, DA AF POWERS, DA TI THE THERMODYNAMIC PROPERTIES OF TECHNETIUM SO HIGH TEMPERATURE SCIENCE LA English DT Article DE HEAT CAPACITY; HARD-SPHERE LIQUID; TC(S,L); TC(G); TC2(G); THERMODYNAMIC PROPERTIES ID ENTHALPY AB Available data are used to construct a model of the heat capacity of technetium that accounts for the effects of lattice vibrations, conduction electrons, vacancies, and lattice dilation. The thermodynamic properties of solid technetium are calculated with this model. The calculated entropy, S-degrees(298.15 K)/R = 3.098, is significantly less than that found in other tabulations of the thermodynamic properties of technetium. The thermodynamic properties of liquid technetium are calculated using the hard-sphere equation of state to estimate the compressibility and thermal expansion of the liquid. The thermodynamic properties of technetium gas and TC2(gas) are calculated with conventional statistical mechanics formulae. RP POWERS, DA (reprint author), SANDIA NATL LABS,DIV 6422,ALBUQUERQUE,NM 87185, USA. NR 37 TC 3 Z9 3 U1 0 U2 8 PU HUMANA PRESS INC PI TOTOWA PA 999 RIVERVIEW DRIVE SUITE 208, TOTOWA, NJ 07512 SN 0018-1536 J9 HIGH TEMP SCI PD APR PY 1991 VL 31 IS 2 BP 105 EP 120 PG 16 WC Chemistry, Physical SC Chemistry GA JD655 UT WOS:A1991JD65500003 ER PT J AU HADLEY, GR BOTEZ, D MAWST, LJ AF HADLEY, GR BOTEZ, D MAWST, LJ TI MODAL DISCRIMINATION IN LEAKY-MODE (ANTIGUIDED) ARRAYS SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID PHASE-LOCKED ARRAYS; DIODE-LASER ARRAYS; HIGH-POWER; OPERATION AB We report the fabrication of a ten-element anti-guided (leaky-mode) array that operates in an in-phase mode with a diffraction-limited far-field pattern at drive currents up to 8.7 times the threshold current (pulsed) and an output power of 400 mW (both facets). This device evidences good discrimination against the out-of-phase leaky mode without the benefit of a "Talbot" spatial filter, relying instead on mode-sensitive interelement losses in an overlying GaAs layer. We have studied this device using two numerical models that allow, for the first time, predictions of mode discrimination near threshold including full two-dimensional waveguiding and all three of the major mode discrimination mechanisms. Results from the more realistic of the two models predict in-phase-mode operation for certain restricted ranges of waveguide dielectric constant in agreement with experiment. This behavior is shown to result from resonances between the waveguide modes and the modes of the active region. Our model therefore successfully explains the narrow range of waveguide dielectric constants observed for devices operating in the in-phase mode. These results suggest that improved yields would result from a different type of leaky-mode array employing smaller, rectangularly shaped waveguides. C1 TRW CO INC,ELECTROOPT RES CTR,SPACE & TECHNOL GRP,REDONDO BEACH,CA 90278. RP HADLEY, GR (reprint author), SANDIA NATL LABS,DIV 1164,ALBUQUERQUE,NM 87185, USA. NR 21 TC 16 Z9 16 U1 0 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD APR PY 1991 VL 27 IS 4 BP 921 EP 930 DI 10.1109/3.83327 PG 10 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA FU104 UT WOS:A1991FU10400013 ER PT J AU LOUBRIEL, GM HELGESON, WD MCLAUGHLIN, DL OMALLEY, MW ZUTAVERN, FJ ROSEN, A STABILE, PJ AF LOUBRIEL, GM HELGESON, WD MCLAUGHLIN, DL OMALLEY, MW ZUTAVERN, FJ ROSEN, A STABILE, PJ TI TRIGGERING GAAS LOCK-ON SWITCHES WITH LASER DIODE-ARRAYS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB We have been able to demonstrate that GaAs switches operated in the high gain mode called "lock-on" meet the required electrical switching parameters of several applications that require a compact switch. This paper will describe the progress that leads to the triggering of high-power Photoconductive Semiconductor Switches (PCSS) switches with laser diode arrays. As of this writing, we have used an 850-W optical pulse from a laser diode array to trigger a 1.5-cm-long switch that delivered 8.5 MW to a 38.3-OMEGA load. Using 166-W arrays we have triggered a 2.5-mm-long switch delivering 1.2 MW with 600-ps rise times at pulse repetition frequencies of 1 kHz. These 2.5-mm-long switches survived 10(5) pulses at 1.0-MW levels. In single-pulse operation we have switched up to 600 A with laser diode arrays. Our goal is to switch up to 5 kA in a single shot mode and up to 100 MW repetitively at up to 10 kHz. At electric fields below 3 kV/cm GaAs switches are activated by creation of one electron-hole pair per photon. This linear mode demands high laser power and, after the light pulse, the carriers recombine in nanoseconds. At higher electric fields GaAs acts as a light activated Zener diode. The laser light generates carriers as before but the field induces gain such that the amount of light required to trigger the switch is reduced by a factor of up to 500. The gain continues until the field across the sample drops to a material-dependent lock-on field. The gain in the switch allows for the use of laser diodes. C1 DAVID SARNOFF RES CTR,PRINCETON,NJ 08543. RP LOUBRIEL, GM (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 9 TC 27 Z9 31 U1 3 U2 4 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 APR PY 1991 VL 38 IS 4 BP 692 EP 695 DI 10.1109/16.75190 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA FC049 UT WOS:A1991FC04900003 ER PT J AU ZUTAVERN, FJ LOUBRIEL, GM OMALLEY, MW SCHANWALD, LP MCLAUGHLIN, DL AF ZUTAVERN, FJ LOUBRIEL, GM OMALLEY, MW SCHANWALD, LP MCLAUGHLIN, DL TI RECOVERY OF HIGH-FIELD GAAS PHOTOCONDUCTIVE SEMICONDUCTOR SWITCHES SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB GaAs photoconductive semiconductor switches (PCSS) are useful as fast recovery switches at electric field stresses below 3.5-8 kV/cm (a threshold field which depends upon the specific type of GaAs). Following a short activating light pulse in this low-field regime, the switch resistance increases roughly exponentially with time constants ranging from 0.1 to 1000 ns, depending on the type of GaAs. At higher fields, however, the resistive recovery depends not only on material properties, but also on the minimum resistance reached during the activating light pulse (trigger resistance), the wavelength of the light pulse, and the field remaining across the switch during recovery. In particular, if the switch is activated with a significantly intense light pulse, it will stay on and maintain the circuit-dependent impedance which is required to hold a constant, material-dependent field across the switch (lock-on). Since the circuit-dependent impedance achieved during lock-on can be several orders of magnitude less that the resistance required for triggering, a substantial savings can be made in the optical energy required to activate the switch. The lock-on switching mode shows gain relative to linear (low-field) PCSS, but recovery is inhibited as long as high-field stresses remain across the switch. Fast recovery of GaAs switches after high-field switching is of particular interest for high repetition rate applications where it is difficult to provide the large optical trigger energy required for switches operating at low fields. We have explored three categories of circuits to induce fast recovery after lock-on by temporarily reducing the field across the switch. Measurements of recovery times from 35 to 80 ns, multiple monopolar and bipolar bursts at 5-40 MHz, and hold-off fields ranging from 5 to 44 kV/cm (corresponding to 15-66 kV across individual switches), will be presented. A comparison will be made of the different circuits used to induce recovery from lock-on and the various factors that influence the recovery will be discussed. RP ZUTAVERN, FJ (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 12 TC 15 Z9 15 U1 0 U2 3 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 APR PY 1991 VL 38 IS 4 BP 696 EP 700 DI 10.1109/16.75191 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA FC049 UT WOS:A1991FC04900004 ER PT J AU LOREE, DL GIESSELMANN, MG KRISTIANSEN, M SHULSKI, AP KIHARA, R AF LOREE, DL GIESSELMANN, MG KRISTIANSEN, M SHULSKI, AP KIHARA, R TI RECENT ADVANCES IN HIGH-POWER IGNITRON DEVELOPMENT SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB The development of high-power ignitrons with peak current ratings of up to 1000 kA and simultaneous charge transfer rates of 250-500 C is currently under way in a joint effort between Texas Tech University (TTU), Lawrence Livermore National Laboratory (LLNL), and industry. Two industrial manufacturers, Richardson Electronics, US, and English Electric Valve, UK, have participated with TTU and LLNL in three workshops to advance the state of the art in high-power ignitrons. Less than three years after the start of the program, the cooperative efforts have led to the development of a new commercial tube (Richardson Electronics NL-9000). High power testing of prototypes of this tube and other unique ignitrons was done by Kihara at LLNL. Research at TTU is concentrated on plasma diagnostics, novel anode designs, electrode placements, and trigger schemes. Electrical measurements as well as optical and microwave plasma studies, such as high-speed framing photography, Mach-Zehnder and microwave interferometry, and spectroscopy have been performed. This paper describes the advances made in high-power ignitron switching capabilities in a comparison study between conventional Size D and Size E tubes, demountable experimental tubes and the new NL-9000 (Richardson Electronics). The paper shows the differences in tube design, and the associated peak current and charge transfer capabilities and lifetime expectancies. The critical design criteria are the anode shape and placement in order to control the plasma and prevent prefires. Tube failure modes and recent studies on alternate ignitor schemes are presented. In addition, results of plasma diagnostics performed on a demountable ignitron with optical access to the discharge plasma are shown. Time resolved images of the interference patterns from an optical Mach-Zehnder interferometer were recorded with a mechanical high-speed camera and evaluated with the help of image processing. C1 RICHARDSON ELECTR,LAFOX,IL 60147. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP LOREE, DL (reprint author), TEXAS TECH UNIV,LUBBOCK,TX 79409, USA. NR 21 TC 1 Z9 2 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 APR PY 1991 VL 38 IS 4 BP 720 EP 725 DI 10.1109/16.75196 PG 6 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA FC049 UT WOS:A1991FC04900009 ER PT J AU RUST, K MCDUFF, G AF RUST, K MCDUFF, G TI LIFE EXTENSION OF THYRATRONS IN SHORT-PULSE CIRCUITS WITH USE OF SATURABLE MAGNETIC SHARPENERS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB The design of magnetic pulse sharpening circuits for thyratron switching applications is presented. Addition of the magnetic device reduces anode dissipation, hence reducing thyratron cooling requirements and anode erosion. The complex interrelated issues of material selection, electrical parameters, core reset, and mechanical engineering are considered for the development of an integrated point design. Test results are presented, and life extension to > 10(10) shots is discussed. C1 PULSE POWER ENGN,SANDIA PK,NM 87047. RP RUST, K (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 26 TC 5 Z9 6 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 APR PY 1991 VL 38 IS 4 BP 731 EP 739 DI 10.1109/16.75198 PG 9 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA FC049 UT WOS:A1991FC04900011 ER PT J AU SMITH, CH TURMAN, BN HARJES, HC AF SMITH, CH TURMAN, BN HARJES, HC TI INSULATIONS FOR METALLIC GLASSES IN PULSE POWER-SYSTEMS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article AB Insulations are used in metallic glass cores in pulse power applications to prevent interlaminar eddy currents due to voltages induced between adjacent laminations. These interlaminar eddy currents in cores can greatly increase losses and, thereby, decrease the pulse permeability at high magnetization rates. This paper reports magnetic properties and voltage hold-off strengths for various insulation materials used with iron-base metallic glass alloys with both low and high induced anisotropy energies. Co-wound insulation films as well as conformal insulations were investigated. None of the insulations were found to be a panacea for pulse power applications. Conformal insulations either tended to degrade the magnetic properties of the cores or were too thin to provide uniform voltage hold-off. Co-wound insulations had adequate voltage hold-off but resulted in cores with lower packing fractions than did conformal insulations. Cores co-wound with mica paper insulation and annealed after winding had the best magnetic properties among the co-wound cores. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP SMITH, CH (reprint author), ALLIED SIGNAL INC,MET CERAM LAB,RES & TECHNOL,MORRISTOWN,NJ 07962, USA. NR 11 TC 6 Z9 8 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 APR PY 1991 VL 38 IS 4 BP 750 EP 757 DI 10.1109/16.75201 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA FC049 UT WOS:A1991FC04900014 ER PT J AU DUNCAN, RV AF DUNCAN, RV TI A REFRIGERATED DEWAR FOR THE JOSEPHSON ARRAY VOLTAGE CALIBRATION SYSTEM SO IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT LA English DT Article ID STANDARD AB A refrigerated dewar has been used successfully with the Josephson array voltage calibration system. It has been used to reliquify helium with no degradation of the calibration system's performance. The independence of the array voltage from temperature has been confirmed to three parts in 10(8) per kelvin over the range 1.6 K less-than-or-equal-to T less-than-or-equal-to 4.6 K. No significant change in the array operation on a quantized state near 1.018 V was detected when its surrounding bath was pumped superfluid, nor when it was cooled by helium vapor at 4.6 K. RP DUNCAN, RV (reprint author), SANDIA NATL LABS,DIV ELECT STAND,ALBUQUERQUE,NM 87185, USA. NR 5 TC 2 Z9 2 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 0018-9456 J9 IEEE T INSTRUM MEAS JI IEEE Trans. Instrum. Meas. PD APR PY 1991 VL 40 IS 2 BP 326 EP 328 DI 10.1109/TIM.1990.1032950 PG 3 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA FN074 UT WOS:A1991FN07400066 ER PT J AU KOTTAPALLI, K SARKAR, TK HUA, YB MILLER, EK BURKE, GJ AF KOTTAPALLI, K SARKAR, TK HUA, YB MILLER, EK BURKE, GJ TI ACCURATE COMPUTATION OF WIDE-BAND RESPONSE OF ELECTROMAGNETIC SYSTEMS UTILIZING NARROW-BAND INFORMATION SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Article AB We investigate Cauchy's technique for interpolating a rational function from samples of frequency responses and/or their derivatives. This technique can be used to speed up the numerical computations of parameters including input impedance and RCS of any linear time-invariant electromagnetic system. Here we have applied the technique to find the electromagnetic response of a conducting cylinder over a spectrum of frequency. The numerical results presented are in good agreement with exact computational data. This technique is a true interpolation/extrapolation technique as it provides the same defective result as the original electric field integral equation at a frequency which corresponds to the internal resonance of the closed structure. C1 SYRACUSE UNIV,DEPT ELECT & COMP ENGN,SYRACUSE,NY 13244. UNIV MELBOURNE,DEPT ELECT ENGN,PARKVILLE,VIC 3052,AUSTRALIA. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP KOTTAPALLI, K (reprint author), COMPACT SOFTWARE INC,PATERSON,NJ 07504, USA. NR 7 TC 70 Z9 70 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD APR PY 1991 VL 39 IS 4 BP 682 EP 687 DI 10.1109/22.76432 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA FD048 UT WOS:A1991FD04800010 ER PT J AU HAHN, SF CAFFERTY, MM AF HAHN, SF CAFFERTY, MM TI SEMICUSTOM INTEGRATED-CIRCUIT AMPLIFIER AND LEVEL DISCRIMINATOR FOR NUCLEAR AND SPACE INSTRUMENTS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB An extra fast current feedback amplifier and a level discriminator are developed employing a dielectrically-isolated bipolar, semi-custom Application Specific Integrated Circuit (ASIC) process. These devices are specifically designed for instruments aboard spacecrafts or in portable packages requiring low power and weight. The amplifier adopts current feedback for a unity-gain bandwidth of 90 MHz while consuming 50 mW. The level discriminator uses a complementary output driver for balanced positive and negative response times. The power consumption of these devices can be programmed by external resistors for optimal speed and power trade-off. RP HAHN, SF (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 3 TC 0 Z9 0 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 APR PY 1991 VL 38 IS 2 BP 44 EP 49 DI 10.1109/23.289260 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300002 ER PT J AU NAKAMURA, M LANDIS, DA RAI, G AF NAKAMURA, M LANDIS, DA RAI, G TI LOW-POWER SHAPER AMPLIFIER FOR THE EOS TPC DETECTOR SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB A shaper amplifier is described that is designed for low power and small size which are important requisites for the Equation of State (EOS) time projection chamber (TPC) detector. The shaper amplifier produces a semi-Gaussian pulse with a peaking time of 210 ns. It dissipates less than 35 mW and has a gain of 4.5. A unique driver circuit capable of driving large capacitive loads and yet requiring low standby current is introduced. RP NAKAMURA, M (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 2 TC 0 Z9 0 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 APR PY 1991 VL 38 IS 2 BP 50 EP 52 DI 10.1109/23.289261 PN 1 PG 3 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300003 ER PT J AU BRITTON, CL KENNEDY, EJ BUGG, WM AF BRITTON, CL KENNEDY, EJ BUGG, WM TI A BIPOLAR MONOLITHIC PREAMPLIFIER FOR HIGH-CAPACITANCE SSC SILICON CALORIMETRY SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB This paper describes a preamplifier designed and fabricated specifically to address the requirements of silicon calorimetry for the Superconducting Super Collider (SSC). The topology and its features are discussed in addition to the design methodology employed. The simulated and measured results for noise, power consumption, and speed are presented. Simulated and measured data for radiation damage effects as well as data for post-damage annealing are also presented. C1 UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996. UNIV TENNESSEE,DEPT ELECT & COMP ENGN,KNOXVILLE,TN 37996. RP BRITTON, CL (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 10 TC 2 Z9 2 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 APR PY 1991 VL 38 IS 2 BP 58 EP 62 DI 10.1109/23.289263 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300005 ER PT J AU FOX, JD HORELICK, D AF FOX, JD HORELICK, D TI ANALYSIS AND SIMULATION OF THE SLD WIC PADS HYBRID PREAMPLIFIER CIRCUITRY SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB The SLD PADS electronics consist of over 9000 channels of charge-sensitive preamplifiers followed by integrated sample/hold data storage, digitizing, and readout circuitry. This paper uses computer simulation techniques to analyze critical performance parameters of the preamplifier hybrid including its interactions with the detector system. Simulation results are presented and verified with measured performance. RP FOX, JD (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 4 TC 0 Z9 0 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 APR PY 1991 VL 38 IS 2 BP 63 EP 68 DI 10.1109/23.289264 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300006 ER PT J AU RADEKA, V RESCIA, S MANFREDI, PF SPEZIALI, V AF RADEKA, V RESCIA, S MANFREDI, PF SPEZIALI, V TI MONOLITHIC, RADIATION HARD CHARGE SENSITIVE PREAMPLIFIER USING DIFFUSED N-CHANNEL JUNCTION FIELD-EFFECT TRANSISTORS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB A monolithic preamplifier entirely based on epitaxial channel, diffused gate N-JFETs has been designed and thoroughly investigated by means of SPICE simulation and breadboard implementation. Integration of the circuit is now in progress on the base of the technological processes that expected to retain the characteristics of noise and radiation tolerance that these JFETs feature as discrete devices. C1 UNIV PAVIA,DIPARTMENTO ELETTR,I-27100 PAVIA,ITALY. RP RADEKA, V (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. RI Rescia, Sergio/D-8604-2011 OI Rescia, Sergio/0000-0003-2411-8903 NR 7 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 83 EP 88 DI 10.1109/23.289267 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300009 ER PT J AU CRAWLEY, HB MCKAY, R MEYER, WT ROSENBERG, EI THOMAS, WD AF CRAWLEY, HB MCKAY, R MEYER, WT ROSENBERG, EI THOMAS, WD TI PERFORMANCE OF FLASH ADCS IN THE 100-MHZ RANGE .1. TEST BENCH AND PRELIMINARY-RESULTS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB We describe a systematic study of the performance of commercially available Flash ADCs in the 100 Megasample per second range, which might be suitable for use at the Superconducting Super Collider. Performance characteristics are measured using a CAMAC-based test bench which is described. Among the FADC performance characteristics reported are linearity, differential linearity, and the effective number of bits. This paper is the first in a series of reports to be presented within the next year as our tests continue. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. RP CRAWLEY, HB (reprint author), IOWA STATE UNIV SCI & TECHNOL,US DOE,DEPT PHYS,AMES,IA 50010, USA. NR 1 TC 5 Z9 5 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 APR PY 1991 VL 38 IS 2 BP 102 EP 106 DI 10.1109/23.289280 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300012 ER PT J AU BRUCKNER, J KORFER, M WANKE, H SCHROEDER, ANF FILGES, D DRAGOVITSCH, P ENGLERT, PAJ STARR, R TROMBKA, JI TAYLOR I DRAKE, DM SHUNK, ER AF BRUCKNER, J KORFER, M WANKE, H SCHROEDER, ANF FILGES, D DRAGOVITSCH, P ENGLERT, PAJ STARR, R TROMBKA, JI TAYLOR, I DRAKE, DM SHUNK, ER TI PROTON-INDUCED RADIATION-DAMAGE IN GERMANIUM DETECTORS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID FAST-NEUTRON DAMAGE; COAXIAL DETECTORS; SYSTEM AB High-purity germanium (HPGe) detectors will be used in future space missions for gamma-ray measurements and will be subject to interactions with energetic particles. To simulate this process several large-volume n-type HPGe detectors were incrementally exposed to a particle fluence of up to 10(8) protons cm-2 (proton energy: 1.5 GeV) at different operating temperatures (90 to 120 K) to induce radiation damage. Basic scientific as well as engineering data on detector performance were collected. During the incremental irradiation, the peak shape produced by the detectors showed a significant change from a Gaussian shape to a broad complex structure. After the irradiation all detectors were thoroughly characterized by measuring many parameters. To remove the accumulated radiation damage the detectors were stepwise annealed at temperatures T less-than-or-equal-to 110-degrees-C while staying in their specially designed cryostats. This study shows that n-type HPGe detectors can be used in charged particle environments as high-energy resolution devices until a certain level of radiation damage is accumulated and that the damage can be removed at moderate annealing temperatures and the detector returned to operating condition. C1 PRINCETON GAMMA TECH, PRINCETON, NJ 08540 USA. UNIV COLOGNE, W-5000 COLOGNE 41, GERMANY. FORSCHUNGSZENTRUM JULICH, INST KERNPHYS, W-5170 JULICH 1, GERMANY. SAN JOSE STATE UNIV, SAN JOSE, CA 95192 USA. NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. CATHOLIC UNIV AMER, WASHINGTON, DC 20064 USA. UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA. RP BRUCKNER, J (reprint author), MAX PLANCK INST CHEM, SAASTR 23, W-6500 MAINZ, GERMANY. NR 26 TC 27 Z9 27 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 209 EP 217 DI 10.1109/23.289298 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300030 ER PT J AU VARNELL, LS CALLAS, JL MAHONEY, WA PEHL, RH LANDIS, DA LUKE, PN MADDEN, NW AF VARNELL, LS CALLAS, JL MAHONEY, WA PEHL, RH LANDIS, DA LUKE, PN MADDEN, NW TI SEGMENTED GE DETECTOR REJECTION OF INTERNAL BETA-ACTIVITY PRODUCED BY NEUTRON-IRRADIATION SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB Future Ge spectrometers flown in space to observe cosmic gamma-ray sources will incorporate segmented detectors to reduce the background from radioactivity produced by energetic particle reactions. To demonstrate the effectiveness of a segmented Ge detector in rejecting background events due to the beta decay of internal radioactivity, a laboratory experiment has been carried out in which radioactivity was produced in the detector by neutron irradiation. A Cf-252 source of neutrons was used to produce, by neutron capture on Ge-74 (36.5% of natural Ge) in the detector itself, Ge-75 (t1/2 = 82.78 min), which decays by beta emission with a maximum electron kinetic energy of 1188 keV. By requiring that an ionizing event deposit energy in two or more of the five segments of the detector, each about one centimeter thick, the beta particles, which have a range of about one millimeter, are rejected, while most external gamma rays incident on the detector are counted. Analysis of this experiment indicates that over 85% of the beta events from the decay of Ge-75 are rejected, in good agreement with Monte Carlo calculations. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP VARNELL, LS (reprint author), CALTECH,JET PROP LAB,PASADENA,CA 91109, USA. NR 4 TC 1 Z9 3 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 APR PY 1991 VL 38 IS 2 BP 218 EP 220 DI 10.1109/23.289299 PN 1 PG 3 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300031 ER PT J AU CUMMINGS, A WANG, N SHUTT, T BARNES, P EMES, J GIRAUDHERAUD, Y HALLER, EE LANGE, A RICH, J ROSS, R SADOULET, B SMITH, G STUBBS, C AF CUMMINGS, A WANG, N SHUTT, T BARNES, P EMES, J GIRAUDHERAUD, Y HALLER, EE LANGE, A RICH, J ROSS, R SADOULET, B SMITH, G STUBBS, C TI PERFORMANCE OF A 60-GRAM CRYOGENIC GERMANIUM DETECTOR SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB We have developed a 60 g particle detector which utilizes both the ionization and the phonons produced by a particle interaction. Six NTD Ge thermistors are attached to a pure germanium crystal which has implanted contacts for drifting charge. We have operated our detector at 30 mK, and we have studied its response to irradiation by 18 and 60 keV photons from an 241 Am source. We present an analysis of the resolution of our detector, considering the noise of the front end electronics, and signals from extraneous sources such as microphonics. C1 COLL FRANCE,PHYS CORPUSCULAIRE LAB,F-75231 PARIS,FRANCE. CENS,F-91191 GIF SUR YVETTE,FRANCE. UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP CUMMINGS, A (reprint author), UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,DEPT PHYS,BERKELEY,CA 94720, USA. RI Stubbs, Christopher/C-2829-2012 OI Stubbs, Christopher/0000-0003-0347-1724 NR 10 TC 8 Z9 8 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 APR PY 1991 VL 38 IS 2 BP 226 EP 230 DI 10.1109/23.289301 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300033 ER PT J AU ROSSINGTON, CS WALTON, JT JAKLEVIC, JM AF ROSSINGTON, CS WALTON, JT JAKLEVIC, JM TI SI(LI) DETECTORS WITH THIN DEAD LAYERS FOR LOW-ENERGY X-RAY-DETECTION SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID JUNCTION AB Regions of incomplete charge collection, or "dead layers", are compared for Si(Li) detectors fabricated with Au and Pd entrance window electrodes. The dead layers were measured by characterizing the detector spectral response to x-ray energies above and below the Si K-alpha absorption edge. It was found that Si(Li) detectors with Pd electrodes exhibit consistently thinner effective Si dead layers than those with Au electrodes. Furthermore, it is demonstrated that the minimum thickness required for low resistivity Pd electrodes is thinner than that required for low resistivity Au electrodes, which further reduces the signal attenuation in Pd/Si(Li) detectors. A model, based on Pd compensation of oxygen vacancies in the SiO2 at the entrance window Si(Li) surface, is proposed to explain the observed differences in detector dead layer thickness. Electrode structures for optimum Si(Li) detector performance at low x-ray energies are discussed. RP ROSSINGTON, CS (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 18 TC 12 Z9 12 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 239 EP 243 DI 10.1109/23.289303 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300035 ER PT J AU LI, Z KRANER, HW AF LI, Z KRANER, HW TI STUDIES OF FREQUENCY-DEPENDENT C-V CHARACTERISTICS OF NEUTRON-IRRADIATED P+-N SILICON DETECTORS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID CAPACITANCE; JUNCTIONS; CENTERS; DAMAGE AB Frequency-dependent capacitance-voltage (C-V) characteristics of neutron irradiated high resistivity silicon p+-n detectors have been observed up to a fluence of 8.0x10(12) n/cm2. It has been found that frequency dependence of the deviation of the C-V characteristic (from its normal V-1/2 dependence), is strongly dependent on the ratio of the defect density and the effective doping density N(t)/N(d)'. As the defect density approaches the effective dopant density, or N(t)/N(d)' --> 1, the junction capacitance eventually assumes the value of the detector geometry capacitance at high frequencies (f greater-than-or-equal-to 10(5) Hz), independent of voltage. A two-trap-level model using the concept of quasi-fermi levels has been developed, which predicts both the effects of C-V frequency dependence and dopant compensation observed in this study. RP LI, Z (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 16 TC 37 Z9 37 U1 1 U2 4 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 APR PY 1991 VL 38 IS 2 BP 244 EP 250 DI 10.1109/23.289304 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300036 ER PT J AU FUJIEDA, I CHO, G DREWERY, J GEE, T JING, T KAPLAN, SN PEREZMENDEZ, V WILDERMUTH, D STREET, RA AF FUJIEDA, I CHO, G DREWERY, J GEE, T JING, T KAPLAN, SN PEREZMENDEZ, V WILDERMUTH, D STREET, RA TI X-RAY AND CHARGED-PARTICLE DETECTION WITH CSI(TL) LAYER COUPLED TO A-SI-H PHOTODIODE LAYERS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB A compact real-time X-ray and charged particle imager with digitized position output can be built either by coupling a fast scintillator to a photodiode array or by forming one on a photodiode array directly. CsI(Tl) layers 100-1000-mu-m thick were evaporated on glass substrates from a crystal CsI(Tl). When coupled to a crystalline Si or amorphous silicon (a-Si:H) photodiode and exposed to calibrated X-ray pulses, their light yields and speed were found to be comparable to those of a crystal CsI(Tl). Single beta particle detection was demonstrated with this combination. The light spread inside evaporated CsI(Tl) was suppressed by its columnar structure. Scintillation detection gives much larger signals than direct X-ray detection due to the increased energy deposition in the detector material. Fabrication of monolithic type X-ray sensors consisting of CsI + a-Si:H photodiodes is discussed. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP FUJIEDA, I (reprint author), XEROX CORP,PALO ALTO RES CTR,3333 COYOTE HILL RD,PALO ALTO,CA 94304, USA. RI Cho, Gyuseong/C-1527-2011 NR 22 TC 31 Z9 33 U1 1 U2 6 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 APR PY 1991 VL 38 IS 2 BP 255 EP 262 DI 10.1109/23.289306 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300038 ER PT J AU ZIOCK, HJ MILNER, C SOMMER, WF CARTIGLIA, N DEWITT, J DORFAN, D HUBBARD, B LESLIE, J OSHAUGHNESSY, KF PITZL, D ROWE, WA SADROZINSKI, HFW SEIDEN, A SPENCER, E TENNENBAUM, P ELLISON, J JERGER, S LIETZKE, C WIMPENNY, SJ FERGUSON, P GIUBELLINO, P AF ZIOCK, HJ MILNER, C SOMMER, WF CARTIGLIA, N DEWITT, J DORFAN, D HUBBARD, B LESLIE, J OSHAUGHNESSY, KF PITZL, D ROWE, WA SADROZINSKI, HFW SEIDEN, A SPENCER, E TENNENBAUM, P ELLISON, J JERGER, S LIETZKE, C WIMPENNY, SJ FERGUSON, P GIUBELLINO, P TI TESTS OF THE RADIATION HARDNESS OF VLSI INTEGRATED-CIRCUITS AND SILICON STRIP DETECTORS FOR THE SSC UNDER NEUTRON, PROTON, AND GAMMA-IRRADIATION SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID DAMAGE AB As part of a program to develop a silicon strip central tracking detector system for the Superconducting Super Collider (SSC) we are studying the effects of radiation damage in silicon detectors and their associated front-end readout electronics. We report on the results of neutron and proton irradiations at the Los Alamos National Laboratory (LANL) and gamma-ray irradiations at U.C. Santa Cruz (UCSC). Individual components on single-sided AC-coupled silicon strip detectors and on test structures were tested. Circuits fabricated in a radiation hard CMOS process and individual transistors fabricated using dielectric isolation bipolar technology were also studied. Results indicate that a silicon strip tracking detector system should have a lifetime of at least one decade at the SSC. C1 UNIV CALIF SANTA CRUZ,INST PARTICLE PHYS,SANTA CRUZ,CA 95064. UNIV CALIF RIVERSIDE,RIVERSIDE,CA 92521. UNIV MISSOURI,ROLLA,MO 65401. IST NAZL FIS NUCL,TURIN,ITALY. RP ZIOCK, HJ (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. OI Ferguson, Phillip/0000-0002-7661-4223 NR 20 TC 15 Z9 15 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 269 EP 276 DI 10.1109/23.289308 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300040 ER PT J AU POLITO, MD AF POLITO, MD TI 5-CHANNEL PROGRAMMABLE COUNTER SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB A five-channel programmable counter, constructed in a two-wide nuclear instrument module, is described. This counter is versatile in performance and flexible to changes, yet it is implemented with a minimum of hardware through the use of an onboard computer and a very large scale integrated counting circuit. The instrument is able to simultaneously count pulses at rates up to 7 MHz from five different sources for a period of time specified by the user. It stores data internally and can be used as a stand-alone counter or connected to a computer, modem or printer through a standard RS-232 serial communications port. RP POLITO, MD (reprint author), US DOE,ENVIRONM MEASUREMENTS LAB,376 HUDSON ST,NEW YORK,NY 10014, USA. NR 5 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 277 EP 280 DI 10.1109/23.289309 PN 1 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300041 ER PT J AU CANCELO, G HANSEN, S COTTARAMUSINO, A HAWKEY, M PATTI, R AF CANCELO, G HANSEN, S COTTARAMUSINO, A HAWKEY, M PATTI, R TI FERMILAB PHYSICS DEPARTMENT FASTBUS TDC MODULE SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB A prototype 64 channel Fastbus TDC built at Fermilab is described. The module features a full custom CMOS four channel gated integrator chip. One level of analog buffering at the inputs is implemented on chip. A four event deep output queue at the bus interface allows a high event rate with low dead time. Each channel can record up to two hits per event. With an occupation rate of 10%, the module can operate at 40,000 events per second with dead time on the order of 15%. The TDC operates in common stop mode with a full scale of 1-mu-sec and a resolution of 1 nsec. C1 ASIC DESIGNS INC,NAPERVILLE,IL 60540. RP CANCELO, G (reprint author), FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510, USA. OI Cotta Ramusino, Angelo/0000-0003-1727-2478 NR 4 TC 0 Z9 0 U1 1 U2 1 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 APR PY 1991 VL 38 IS 2 BP 290 EP 294 DI 10.1109/23.289312 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300044 ER PT J AU BERG, D BERMAN, E MACKINNON, B NICINSKI, T OLEYNIK, G PETRAVICK, D PORDES, R SERGEY, G SLIMMER, D STREETS, J KOWALD, W AF BERG, D BERMAN, E MACKINNON, B NICINSKI, T OLEYNIK, G PETRAVICK, D PORDES, R SERGEY, G SLIMMER, D STREETS, J KOWALD, W TI SOFTWARE FOR THE FERMILAB FASTBUS SMART CRATE CONTROLLER SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB We report on software developed in support of the Fermilab FASTBUS Smart Crate Controller. This software includes a full suite of diagnostics, support for FASTBUS Standard Routines, and extended software to allow communication over the RS-232 and Ethernet ports. The communication software supports remote procedure call execution from a host VAX or Unix system. The software supported on the FSCC forms part of the PAN-DA software system which supports the functions of front end readout controllers and event builders in multiprocessor, multilevel, distributed data acquisition systems. C1 DUKE UNIV,DURHAM,NC 27706. RP BERG, D (reprint author), FERMI NATL ACCELERATOR LAB,DEPT ONLINE SUPPORT,ONLINE & DATA ACQUISIT SOFTWARE GRP,BATAVIA,IL 60510, USA. NR 5 TC 0 Z9 0 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 APR PY 1991 VL 38 IS 2 BP 306 EP 310 DI 10.1109/23.289315 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300047 ER PT J AU BOOTH, A BLACK, D WALSH, D BOWDEN, M BARSOTTI, E AF BOOTH, A BLACK, D WALSH, D BOWDEN, M BARSOTTI, E TI SIMULATION AND MODELING OF DATA ACQUISITION-SYSTEMS FOR FUTURE HIGH-ENERGY PHYSICS EXPERIMENTS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB With the ever-increasing complexity of detectors and their associated data acquisition (DAQ) systems, it is important to bring together a set of tools to enable system designers, both hardware and software, to understand the behavioral aspects of the system as a whole, as well as the interaction between different functional units within the system. For complex systems, human intuition is inadequate since there are simply too many variables for system designers to begin to predict how varying any subset of them affects the total system. On the other hand, exact analysis, even to the extent of investing in disposable hardware prototypes, is much too time consuming and costly. Simulation bridges the gap between physical intuition and exact analysis by providing a learning vehicle in which the effects of varying many parameters can be analyzed and understood. Simulation techniques are being used in the development of the Scalable Parallel Open Architecture Data Acquisition System at Fermilab. This paper describes the work undertaken at Fermilab in which several sophisticated tools have been brought together to provide an integrated systems engineering environment specifically aimed at designing DAQ systems. Also presented are results of simulation experiments in which the effects of varying trigger rates, event sizes and event distribution over processors, are clearly seen in terms of throughput and buffer usage in an event-building switch. RP BOOTH, A (reprint author), FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510, USA. NR 6 TC 0 Z9 0 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 APR PY 1991 VL 38 IS 2 BP 316 EP 321 DI 10.1109/23.289317 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300049 ER PT J AU LESKOVAR, B AF LESKOVAR, B TI HIGH-SPEED DATA-TRANSMISSION AT THE SUPERCONDUCTING SUPER COLLIDER SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID SYSTEMS AB High speed data transmission using fiber optics in the data acquisition system of the Superconducting Super Collider has been investigated. Emphasis is placed on the high speed data transmission system overview, the local data network and on subassemblies, such as optical transmitters and receivers. Also, the performance of candidate subassemblies having a low power dissipation for the data acquisition system is discussed. RP LESKOVAR, B (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT ELECTR ENGN,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 10 TC 0 Z9 0 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 APR PY 1991 VL 38 IS 2 BP 329 EP 334 DI 10.1109/23.289320 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300052 ER PT J AU BIESER, F JONES, R MCPARLAND, C AF BIESER, F JONES, R MCPARLAND, C TI DATA LINKS FOR THE EOS TPC SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB We report on the design and performance of high speed data links and slower configuration control links used between the EOS TPC detector and the data processing electronics. Data rates of 5MBytes/link are maintained over 30m with optical isolation. Pedestal subtraction, hit detection, and data reordering are performed online. RP BIESER, F (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 4 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 335 EP 336 DI 10.1109/23.289321 PN 1 PG 2 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300053 ER PT J AU LEE, KL ARTHUR, AA JONES, RW MATIS, HS NAKAMURA, M KLEINFELDER, SA RITTER, HG WIEMAN, HH AF LEE, KL ARTHUR, AA JONES, RW MATIS, HS NAKAMURA, M KLEINFELDER, SA RITTER, HG WIEMAN, HH TI ANALOG-TO-DIGITAL CONVERSION USING CUSTOM CMOS ANALOG MEMORY FOR THE EOS TIME PROJECTION CHAMBER SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB The multiplexing scheme of custom CMOS analog memory integrated circuits, 16 channels x 256 cells, into analog to digital converters (ADC's) to handle 15,360 signal channels of a time projection chamber detector system is described. Primary requirements of this system are high density, low power and large dynamic range. The analog memory device multiplexing scheme was designed to digitize the information stored in the memory cells. The digitization time of the ADC's and the settling times for the memory unit were carefully interleaved to optimize the performance and timing during the multiplexing operation. This kept the total number of ADC's, a costly and power consuming component, to an acceptable minimum. RP LEE, KL (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 2 TC 2 Z9 2 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 APR PY 1991 VL 38 IS 2 BP 344 EP 347 DI 10.1109/23.289323 PN 1 PG 4 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300055 ER PT J AU HOEFLICH, J MCSHURLEY, D MARSHALL, D OXOBY, G SHAPIRO, S STILES, P SPENCER, E AF HOEFLICH, J MCSHURLEY, D MARSHALL, D OXOBY, G SHAPIRO, S STILES, P SPENCER, E TI DESIGN AND CONSTRUCTION OF THE FRONT-END ELECTRONICS DATA ACQUISITION FOR THE SLD CRID SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID SYSTEM AB We describe the front-end electronics for the Cherenkov Ring Imaging Detector (CRID) of the SLD at the Stanford Linear Accelerator Center. The design philosophy and implementation are discussed with emphasis on the low-noise hybrid amplifiers, signal processing and data acquistion electronics. The system receives signals from a highly efficient single-photo electron detector. These signals are shaped and amplified before being stored in an analog memory and processed by a digitizing system. The data from several ADCs are multiplexed and transmitted via fiber optics to the SLD FASTBUS system. We highlight the technologies used, as well as the space, power dissipation, and environmental constraints imposed on the system. C1 UNIV CALIF SANTA CRUZ,INST PARTICLE PHYS,SANTA CRUZ,CA 95064. RP HOEFLICH, J (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 10 TC 1 Z9 1 U1 1 U2 1 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 APR PY 1991 VL 38 IS 2 BP 348 EP 356 DI 10.1109/23.289324 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300056 ER PT J AU HALLER, GM FREYTAG, ML MAZAHERI, G OLSEN, J PAFFRATH, L AF HALLER, GM FREYTAG, ML MAZAHERI, G OLSEN, J PAFFRATH, L TI PHYSICAL PACKAGING AND ORGANIZATION OF THE DRIFT CHAMBER ELECTRONICS SYSTEM FOR THE STANFORD LARGE DETECTOR SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID SLD AB In this paper the logical organization, physical packaging, and operation of the drift chamber electronics for the SLD at SLAC is described. The system processes signals from approximately 7,000 drift wires and is unusual in that most electronic functions are packaged on printed circuit boards within the detector. The circuits reside on signal-processing motherboards, controller boards, signal-transition boards, power-distribution boards, and fiber-optics-to-electrical conversion boards. The interaction and interconnection of these boards with respect to signal and control flow are presented. RP HALLER, GM (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 11 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 357 EP 362 DI 10.1109/23.289325 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300057 ER PT J AU HALLER, GM FREYTAG, DR FOX, J OLSEN, J PAFFRATH, L YIM, A HONMA, A AF HALLER, GM FREYTAG, DR FOX, J OLSEN, J PAFFRATH, L YIM, A HONMA, A TI THE FRONT-END ANALOG AND DIGITAL SIGNAL-PROCESSING ELECTRONICS FOR THE DRIFT CHAMBERS OF THE STANFORD LARGE DETECTOR SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID MEMORY UNIT; MICROSTORE AB The front-end signal processing electronics for the drift-chambers of the Stanford Large Detector (SLD) at the Stanford Linear Collider is described. The system is implemented with printed-circuit boards which are shaped for direct mounting on the detector. Typically, a motherboard comprises 64 channels of transimpedance amplification and analog waveform sampling, A/D conversion, and associated control and readout circuitry. The loaded motherboard thus forms a processor which records low-level waveforms from 64 detector channels and transforms the information into a 64 k-byte serial data stream. In addition, the package performs calibration functions, measures leakage currents on the wires, and generates wire hit patterns for triggering purposes. The construction and operation of the electronic circuits utilizing monolithic, hybridized, and programmable components are discussed. C1 UNIV VICTORIA,VICTORIA V8W 2Y2,BC,CANADA. RP HALLER, GM (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 12 TC 2 Z9 2 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 APR PY 1991 VL 38 IS 2 BP 363 EP 369 DI 10.1109/23.289326 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300058 ER PT J AU HONMA, A HALLER, GM USHER, T SHYPIT, R AF HONMA, A HALLER, GM USHER, T SHYPIT, R TI PERFORMANCE OF THE FRONT-END SIGNAL-PROCESSING ELECTRONICS FOR THE DRIFT CHAMBERS OF THE STANFORD LARGE DETECTOR SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID SLAC AB This paper reports on the performance of the frontend analog and digital signal processing electronics for the drift chambers of the Stanford Large Detector (SLD) detector at the Stanford Linear Collider. The electronics mounted on printed circuit boards include up to 64 channels of transimpedance amplification, analog sampling, A/D conversion, and associated control circuitry. Measurements of the time resolution, gain, noise, linearity, crosstalk, and stability of the readout electronics are described and presented. The expected contribution of the electronics to the relevant drift chamber measurement resolutions (i.e., timing and charge division) is given. C1 STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. UNIV BRITISH COLUMBIA,VANCOUVER V6T 1W5,BC,CANADA. RP HONMA, A (reprint author), UNIV VICTORIA,VICTORIA V8W 2Y2,BC,CANADA. NR 7 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 370 EP 375 DI 10.1109/23.289327 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300059 ER PT J AU TURKO, BT FUZESY, RZ PRIPSTEIN, DA KOWITT, M CHAMBERLAIN, O SHAPIRO, G HUGHES, E AF TURKO, BT FUZESY, RZ PRIPSTEIN, DA KOWITT, M CHAMBERLAIN, O SHAPIRO, G HUGHES, E TI AUTOMATIC TRACKING OF THE INTERSECTION OF A LASER AND ELECTRON-BEAM SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB For the Compton Polarimeter experiment at the Stanford Linear Accelerator the crossing point of a laser beam and an electron beam must be kept accurate and stable. An electronic system is described for the automatic tracking and correcting of the beam crossing. A remote CCD camera, relatively insensitive to electromagnetic disturbance, records small displacements of the pulsed laser beam. Video signals are analyzed at a remote station, the amount of drift from a selected reference point determined and the appropriate correction commands sent to the motorized mirror deflecting the laser beam. A description of the system, its performance and the test results are presented. C1 STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305. RP TURKO, BT (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 2 TC 0 Z9 0 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 376 EP 378 DI 10.1109/23.289328 PN 1 PG 3 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300060 ER PT J AU AIHARA, H AF AIHARA, H TI PERFORMANCE OF THE D0 END CALORIMETER ELECTROMAGNETIC MODULE SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB We have constructed a Uranium liquid Argon calorimeter which serves as the end calorimeter electromagnetic module for the D0 experiment at Fermilab. We present details of the construction and the results of the tests made using electron beams ranging from 10 GeV to 150 GeV. We find the energy resolution is 15.5%/ square-root E(GeV) with a small constant term of approximately 0.5% and the response is linear to better than +/- 0.5%. RP AIHARA, H (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. RI Aihara, Hiroaki/F-3854-2010 OI Aihara, Hiroaki/0000-0002-1907-5964 NR 5 TC 0 Z9 0 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 APR PY 1991 VL 38 IS 2 BP 398 EP 402 DI 10.1109/23.289332 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300064 ER PT J AU ANTILOGUS, P ASTON, D BIENZ, T BIRD, F DASU, S DUNWOODIE, W HALLEWELL, G KAWAHARA, H KWON, Y LEITH, D MARSHALL, D MULLER, D NAGAMINE, T OXOBY, G RATCLIFF, B RENSING, P SCHULTZ, D SHAPIRO, S SIMOPOULOS, C SOLODOV, E STILES, P SUEKANE, F TOGE, N VAVRA, J WILLIAMS, S WILSON, RJ WHITAKER, JS BEAN, A CALDWELL, D DUBOSCQ, J HUBER, J LU, A MATHYS, L MCHUGH, S MORRISON, R WITHERELL, M YELLIN, S COYLE, P COYNE, D SPENCER, E DOLIVEIRA, A JOHNSON, RA MARTINEZ, J NUSSBAUM, M SANTHA, AKS SHOUP, A STOCKDALE, I JACQUES, P PLANO, R STAMER, P ABE, K HASEGAWA, K YUTA, H AF ANTILOGUS, P ASTON, D BIENZ, T BIRD, F DASU, S DUNWOODIE, W HALLEWELL, G KAWAHARA, H KWON, Y LEITH, D MARSHALL, D MULLER, D NAGAMINE, T OXOBY, G RATCLIFF, B RENSING, P SCHULTZ, D SHAPIRO, S SIMOPOULOS, C SOLODOV, E STILES, P SUEKANE, F TOGE, N VAVRA, J WILLIAMS, S WILSON, RJ WHITAKER, JS BEAN, A CALDWELL, D DUBOSCQ, J HUBER, J LU, A MATHYS, L MCHUGH, S MORRISON, R WITHERELL, M YELLIN, S COYLE, P COYNE, D SPENCER, E DOLIVEIRA, A JOHNSON, RA MARTINEZ, J NUSSBAUM, M SANTHA, AKS SHOUP, A STOCKDALE, I JACQUES, P PLANO, R STAMER, P ABE, K HASEGAWA, K YUTA, H TI CHERENKOV RING IMAGING DETECTOR FRONT-END ELECTRONICS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID CERENKOV AB The SLD Cherenkov Ring Imaging Detector uses a proportional wire detector for which a single channel hybrid has been developed. It consists of a preamplifer, gain selectable amplifier, load driver amplifier, power switching, and precision calibrator. For this hybrid, a bipolar, semicustom, integrated circuit has been designed which includes video operational amplifiers for two of the gain stages. This approach allows maximization of the detector volume, allows DC coupling, and enables gain selection. System tests show good noise performance, calibration precision, system linearity, and signal shape uniformity over the full dynamic range. C1 BOSTON UNIV,DEPT PHYS,BOSTON,MA 02215. UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106. UNIV CALIF SANTA CRUZ,INST PARTICLE PHYS,SANTA CRUZ,CA 95064. UNIV CINCINNATI,DEPT PHYS,CINCINNATI,OH 45221. RUTGERS STATE UNIV,SERIN PHYS LAB,PISCATAWAY,NJ 08855. TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 980,JAPAN. NOVOSIBIRSK NUCL PHYS INST,NOVOSIBIRSK 630090,USSR. RP ANTILOGUS, P (reprint author), STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. OI Bean, Alice/0000-0001-5967-8674; Wilson, Robert/0000-0002-8184-4103 NR 10 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 408 EP 416 DI 10.1109/23.289334 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300066 ER PT J AU ATWOOD, WB BARCZEWSKI, T BAUERDICK, LAT BELLANTONI, L BLUCHER, E BLUM, W BOUDREAU, J BOYLE, O CINABRO, D CONWAY, J COWAN, G COWEN, DF EFTHYMIOPOULOS, I FAURE, P FENG, Z FIDECARO, F GOBBO, B HALLEY, AW HAYWOOD, S JAHN, A JARED, RC JOHNSON, RP KASEMANN, M KLEINKNECHT, K LECLAIRE, B LEHRAUS, I LOHSE, T LUEKE, D LUSIANI, A MARROCCHESI, PS MAY, J MEYER, TC MILOTTI, E MINTEN, A PATER, J RICHTER, R ROEHN, S ROLANDI, L ROTH, A ROTSCHEIDT, H SCHLATTER, D SCHMELLING, M SCHMIDT, H SCHROEDER, J SETTLES, R STEEG, F STEFANINI, G TAKASHIMA, M TEJESSY, W THOMAS, J VAYAKI, A WEAR, J WIEDENMANN, W WITZELING, W WU, SL AF ATWOOD, WB BARCZEWSKI, T BAUERDICK, LAT BELLANTONI, L BLUCHER, E BLUM, W BOUDREAU, J BOYLE, O CINABRO, D CONWAY, J COWAN, G COWEN, DF EFTHYMIOPOULOS, I FAURE, P FENG, Z FIDECARO, F GOBBO, B HALLEY, AW HAYWOOD, S JAHN, A JARED, RC JOHNSON, RP KASEMANN, M KLEINKNECHT, K LECLAIRE, B LEHRAUS, I LOHSE, T LUEKE, D LUSIANI, A MARROCCHESI, PS MAY, J MEYER, TC MILOTTI, E MINTEN, A PATER, J RICHTER, R ROEHN, S ROLANDI, L ROTH, A ROTSCHEIDT, H SCHLATTER, D SCHMELLING, M SCHMIDT, H SCHROEDER, J SETTLES, R STEEG, F STEFANINI, G TAKASHIMA, M TEJESSY, W THOMAS, J VAYAKI, A WEAR, J WIEDENMANN, W WITZELING, W WU, SL TI TRACKING WITH THE ALEPH TIME PROJECTION CHAMBER SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID WIRE; EXB AB The tracking performance of the ALEPH Time Projection Chamber (TPC) has been studied using the data taken during the LEP running periods in 1989 and 1990. After careful correction of residual distortions and optimization of coordinate reconstruction algorithms a single coordinate resolution of 173-mu-m in azimuthal and 740-mu-m in longitudinal direction is achieved. This results in a momentum resolution for the TPC alone of DELTA-p/p2 = 0.0012 (GeV/c)-1. In combination with the ALEPH Inner Tracking Chamber (ITC) a total momentum resolution of DELTA-p/p2 = 0.0008 (GeV/c)-1, close to the design specifications is reached. C1 DEMOCRITOS NUCL RES CTR,ATHENS,GREECE. UNIV MAINZ,INST PHYS,W-6500 MAINZ,GERMANY. IST NAZL FIS NUCL,PISA,ITALY. SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY. IST FIS,TRIESTE,ITALY. IST NAZL FIS NUCL,TRIESTE,ITALY. MAX PLANCK INST PHYS & ASTROPHYS,W-8000 MUNICH 40,GERMANY. UNIV GLASGOW,GLASGOW G12 8QQ,SCOTLAND. UNIV WISCONSIN,MADISON,WI 53706. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP ATWOOD, WB (reprint author), CERN,CH-1211 GENEVA 23,SWITZERLAND. RI Rolandi, Luigi (Gigi)/E-8563-2013; Lusiani, Alberto/N-2976-2015; Marrocchesi, Pier Simone/N-9068-2015; Lusiani, Alberto/A-3329-2016; OI Rolandi, Luigi (Gigi)/0000-0002-0635-274X; Lusiani, Alberto/0000-0002-6876-3288; Marrocchesi, Pier Simone/0000-0003-1966-140X; Lusiani, Alberto/0000-0002-6876-3288; Kasemann, Matthias/0000-0002-0429-2448; Milotti, Edoardo/0000-0001-7348-9765 NR 10 TC 0 Z9 0 U1 1 U2 2 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 APR PY 1991 VL 38 IS 2 BP 432 EP 440 DI 10.1109/23.289336 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300069 ER PT J AU ABBOT, B ADAMS, D ATAC, M ANWAY, C BAUMBAUGH, A BAUMBAUGH, B BERGE, P BINKLEY, M BISHOP, J BISWAS, N BROSS, AD BUCHANAN, C CASON, N CHANEY, R CHRISMAN, D CLARK, A CLINE, D COHN, H CORCORAN, M DAVIES, R ELIAS, J FENYVES, E FINLEY, D FOSTER, GW GAILLARD, JM GODFREY, J GOLDBERG, H HAMMACK, H HUANG, X JAQUES, J KENNEY, V KEPHART, R KOLTICK, D KOLONKO, J KONDO, K LEWIS, RA MARCHANT, J MCILLWAIN, R MARGULIES, S MIETTENEN, H MOORE, R MOUNTAIN, RJ OKUSAWA, T PIEKARZ, J PLADALMAU, A RUCHTI, R SCALISE, R SHEPHARD, W SHIBATA, E SMITH, GA SOLOMON, J TAKIKAWA, K TKACZYK, S WAGNER, R AF ABBOT, B ADAMS, D ATAC, M ANWAY, C BAUMBAUGH, A BAUMBAUGH, B BERGE, P BINKLEY, M BISHOP, J BISWAS, N BROSS, AD BUCHANAN, C CASON, N CHANEY, R CHRISMAN, D CLARK, A CLINE, D COHN, H CORCORAN, M DAVIES, R ELIAS, J FENYVES, E FINLEY, D FOSTER, GW GAILLARD, JM GODFREY, J GOLDBERG, H HAMMACK, H HUANG, X JAQUES, J KENNEY, V KEPHART, R KOLTICK, D KOLONKO, J KONDO, K LEWIS, RA MARCHANT, J MCILLWAIN, R MARGULIES, S MIETTENEN, H MOORE, R MOUNTAIN, RJ OKUSAWA, T PIEKARZ, J PLADALMAU, A RUCHTI, R SCALISE, R SHEPHARD, W SHIBATA, E SMITH, GA SOLOMON, J TAKIKAWA, K TKACZYK, S WAGNER, R TI SCINTILLATING FIBERS AND WAVE-GUIDES FOR TRACKING APPLICATIONS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID STATE AB We have been developing a test facility to study the light transmission properties of scintillating fiber waveguides for tracking applications in High Energy Physics. A light-tight box two meters in length has been built, and data acquisition hardware and software is in place for testing various aspects of scintillating fibers and waveguides. Scintillating fibers have been excited with radioactive sources, UV light sources and LEDs. Various photodetectors such as photomultiplier tubes, photodiodes, CCDs and solid state photomultipliers (SSPMs) have been utilized to detect the transmitted light. In this paper we present studies of attenuation length and transmission through splices. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV ILLINOIS,CHICAGO,IL 60680. UNIV NOTRE DAME,NOTRE DAME,IN 46556. OSAKA CITY UNIV,OSAKA 558,JAPAN. PENN STATE UNIV,UNIVERSITY PK,PA 16802. RICE UNIV,HOUSTON,TX 77251. UNIV TEXAS,DALLAS,TX 75230. UNIV TSUKUBA,SAKURA,IBARAKI 30031,JAPAN. RP ABBOT, B (reprint author), PURDUE UNIV,W LAFAYETTE,IN 47907, USA. NR 4 TC 5 Z9 5 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 441 EP 445 DI 10.1109/23.289337 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300070 ER PT J AU YU, B SMITH, GC RADEKA, V MATHIESON, E AF YU, B SMITH, GC RADEKA, V MATHIESON, E TI INVESTIGATION OF CHEVRON CATHODE PADS FOR POSITION ENCODING IN VERY HIGH-RATE, GAS PROPORTIONAL CHAMBERS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID DETECTORS AB New techniques for position encoding in very high rate particle and photon detectors will be required in experiments planned for future particle accelerators such as the Superconducting Super Collider and new, high intensity, synchrotron sources. We are carrying out a detailed theoretical and experimental study of a position interpolation technique in which a row of chevron shaped cathode pads lies underneath each anode wire of a proportional chamber. Centroid finding of the cathode induced charge is performed on the signals from the chevron pads. High event rate and high multiplicity capabilities are achieved by parallel readout. Results are presented which illustrate the reduction, to an acceptably low level, of differential non-linearity by specific changes in the chevron geometry, position resolution of about 110-mu-m (FWHM) for 5.4 keV X-rays independent of wire length, and the role played by avalanche angular localization in the position interpolation technique. C1 UNIV LEICESTER,LEICESTER LE1 7RH,ENGLAND. RP YU, B (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 14 TC 11 Z9 11 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 APR PY 1991 VL 38 IS 2 BP 454 EP 460 DI 10.1109/23.289339 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300072 ER PT J AU LEE, C MILLER, G KAPLAN, DM SA, J HSIUNG, YB CAREY, T JEPPESEN, R AF LEE, C MILLER, G KAPLAN, DM SA, J HSIUNG, YB CAREY, T JEPPESEN, R TI A PARALLEL PIPELINED DATA-FLOW TRIGGER PROCESSOR SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB This paper describes a parallel pipelined dataflow trigger processor which is used in Fermilab E789. E789 is an experiment to study low-multiplicity decays of particles containing b or c quarks. The processor consists of an upstream vertex processor and a downstream track processor. The algorithms which reconstruct the postulated particle paths and calculate particle origin are implemented via interconnected function-specific hardware modules. The algorithm is directly dependent upon the organization of the modules, the specific arrangement of the inter-module cabling, on-board wire patch patterns, and where appropriate, on-board memory data. The uniqueness of this particular dataflow processor is the inclusion of the particle origin calculation. The vertex processor utilizes silicon detector hits to calculate the particle origin and to verify consistency with the downstream track. The downstream tracks are reconstructed by the track processor. The processor provides an indication of the presence of at least one interesting particle pair in the current event by asserting Read on its Read/Skip output. The Read assertion is then used as a trigger to capture all of the event's data for subsequent extensive off-line analysis. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. RP LEE, C (reprint author), NO ILLINOIS UNIV,DE KALB,IL 60115, USA. OI HSIUNG, YEE/0000-0003-4801-1238 NR 8 TC 2 Z9 2 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 APR PY 1991 VL 38 IS 2 BP 461 EP 470 DI 10.1109/23.289340 PN 1 PG 10 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300073 ER PT J AU FORTNER, M GREEN, J HEDIN, D MORPHIS, R REPOND, S WILLIS, S ZAZULA, R JOHNS, K BAZIZI, K FAHLAND, T HALL, RE JERGER, S LIETZKE, C SMITH, D BUTLER, JM DIEHL, HT EARTLY, D FITZPATRICK, T GREEN, D HAGGERTY, H HANSEN, S HAWKINS, J IGARASHI, S JOSTLEIN, H LI, J LI, R MAO, H MARTIN, P MENG, R ROTOLO, C TAKETANI, A XIE, P YAMADA, R ZHOU, Y MARSHALL, T KUNORI, S ANTIPOV, Y BALDIN, B DENISOV, D DENISOV, S GLEBOV, V MOKHOV, N PODSTAVKOV, V AF FORTNER, M GREEN, J HEDIN, D MORPHIS, R REPOND, S WILLIS, S ZAZULA, R JOHNS, K BAZIZI, K FAHLAND, T HALL, RE JERGER, S LIETZKE, C SMITH, D BUTLER, JM DIEHL, HT EARTLY, D FITZPATRICK, T GREEN, D HAGGERTY, H HANSEN, S HAWKINS, J IGARASHI, S JOSTLEIN, H LI, J LI, R MAO, H MARTIN, P MENG, R ROTOLO, C TAKETANI, A XIE, P YAMADA, R ZHOU, Y MARSHALL, T KUNORI, S ANTIPOV, Y BALDIN, B DENISOV, D DENISOV, S GLEBOV, V MOKHOV, N PODSTAVKOV, V TI THE VME-BASED D0 MUON TRIGGER ELECTRONICS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID DRIFT AB The trigger electronics for the muon system of the Fermilab D0 detector is described. The hardware trigger consists of VME-based cards designed to find probable tracks in individual chambers and then match these track segments. The fast trigger is highly parallel and able to discern probable tracks from about 15,000 trigger cells in under 200 ns from receipt of all bits in the counting house. There is a parallel confirmation trigger with a response time of 1 - 5 microseconds that provides a crude calculation of the momentum and charge of the muon. C1 UNIV ARIZONA,TUCSON,AZ 85721. UNIV CALIF RIVERSIDE,RIVERSIDE,CA 92521. INDIANA UNIV,BLOOMINGTON,IN 47401. UNIV MARYLAND,COLLEGE PK,MD 20742. SERPUKHOV HIGH ENERGY PHYS INST,SERPUKHOV,USSR. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP FORTNER, M (reprint author), NO ILLINOIS UNIV,DE KALB,IL 60115, USA. RI Taketani, Atsushi/E-1803-2017; OI Taketani, Atsushi/0000-0002-4776-2315; Hedin, David/0000-0001-9984-215X NR 6 TC 7 Z9 7 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 APR PY 1991 VL 38 IS 2 BP 480 EP 485 DI 10.1109/23.289343 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300076 ER PT J AU HASKINS, PS MCKISSON, JE ELY, DW WEISENBERGER, AG BALLARD, TA DYER, CS TRUSCOTT, PR PIERCEY, RB RAMAYYA, AV CAMP, DC AF HASKINS, PS MCKISSON, JE ELY, DW WEISENBERGER, AG BALLARD, TA DYER, CS TRUSCOTT, PR PIERCEY, RB RAMAYYA, AV CAMP, DC TI PERFORMANCE OF A BGO DETECTOR IN LOW EARTH ORBIT SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB A 7.6 cm x 7.6 cm BGO detector was flown in the middeck of the Space Shuttle Columbia August 8-13, 1989 as part of the Shuttle Activation Monitor (SAM) experiment. One of the goals of this experiment was to compare the performance of the BGO to that of NaI in the same environment. Twenty-four hours of data in five-minute time bins were recorded with each detector in each of two locations in a high-inclination orbit (57-degrees, 300 km). Pre- and post-flight low background counting was performed for identification of induced activities produced due to the exposure to the space radiation environment. C1 ROYAL AEROSP ESTAB,FARNBOROUGH GU14 6TD,ENGLAND. MISSISSIPPI STATE UNIV,MISSISSIPPI STATE,MS 39762. VANDERBILT UNIV,NASHVILLE,TN 37235. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP HASKINS, PS (reprint author), UNIV FLORIDA,SPACE ASTRON LAB,GAINESVILLE,FL 32609, USA. NR 11 TC 2 Z9 2 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 APR PY 1991 VL 38 IS 2 BP 531 EP 535 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300086 ER PT J AU OWENS, A BAKER, R CLINE, TL GEHRELS, N JERMAKIAN, J NOLAN, T RAMATY, R SMITH, G STILWELL, DE TEEGARDEN, BJ TROMBKA, J YAVER, H CORK, CP LANDIS, DA LUKE, PN MADDEN, NW MALONE, D PEHL, RH HURLEY, K MATHIAS, S POST, AH AF OWENS, A BAKER, R CLINE, TL GEHRELS, N JERMAKIAN, J NOLAN, T RAMATY, R SMITH, G STILWELL, DE TEEGARDEN, BJ TROMBKA, J YAVER, H CORK, CP LANDIS, DA LUKE, PN MADDEN, NW MALONE, D PEHL, RH HURLEY, K MATHIAS, S POST, AH TI THE TRANSIENT GAMMA-RAY SPECTROMETER SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID SPECTROSCOPY AB We describe the Transient Gamma-Ray Spectrometer (TGRS) to be flown on board the WIND spacecraft. This instrument is designed to detect cosmic gamma-ray bursts over the energy range 20 keV to 10 MeV with an expected spectroscopic resolution of 2 keV at 1 MeV (E/DELTA-E = 500). The active detection element is a 215 cm3 high purity n-type Ge crystal cooled to cryogenic temperatures by a passive radiative cooler. The geometric field of view (FOV) defined by the cooler is 170-degrees FWFM. Burst data are stored directly in an on board 2.75 Mbit burst memory with an absolute timing accuracy of +/- 1.5 ms. This capacity is sufficient to store the entire spectral data set of all but the largest bursts. In addition to burst measurements, the instrument will also study solar flares, search for possible diffuse background lines and monitor the 511 keV positron annihilation radiation from the galactic center. The experiment is scheduled to be launched on a Delta II launch vehicle from Cape Canaveral on December 31, 1992. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, BERKELEY, CA 94702 USA. UNIV CALIF BERKELEY, SPACE SCI LAB, BERKELEY, CA 94720 USA. ARTHUR D LITTLE INC, CAMBRIDGE, MA 02140 USA. RP OWENS, A (reprint author), NASA, GODDARD SPACE FLIGHT CTR, HIGH ENERGY ASTROPHYS LAB, GREENBELT, MD 20771 USA. RI Gehrels, Neil/D-2971-2012 NR 9 TC 16 Z9 16 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9499 EI 1558-1578 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 559 EP 567 DI 10.1109/23.289357 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300090 ER PT J AU ATAC, M CHANEY, R CHRISMAN, D CLINE, D FENYVES, E PARK, J ANTICH, P AF ATAC, M CHANEY, R CHRISMAN, D CLINE, D FENYVES, E PARK, J ANTICH, P TI DEVELOPMENT OF A HIGH-RESOLUTION SCINTILLATING FIBER GAMMA-RAY TELESCOPE SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB We report on further development and testing of a Compton Telescope composed of scintillating fibers and position sensitive photomultipliers. Initial tests of the telescope result in a better than 1 mm (rms) position resolution, and in a 17.5 mrad (rms) angular resolution for 1.2 MeV photons from a collimated Co-60 gamma source. This type of device can be used for constructing large area telescopes for gamma ray astronomy. We are encouraged by the results and working on the development of a larger Compton telescope. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV TEXAS,DEPT PHYS,RICHARDSON,TX 75083. UNIV TEXAS,SW MED CTR,DEPT RADIOL,DALLAS,TX 75235. RP ATAC, M (reprint author), UNIV CALIF LOS ANGELES,DEPT PHYS & ASTRON,LOS ANGELES,CA 90024, USA. NR 7 TC 2 Z9 2 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 APR PY 1991 VL 38 IS 2 BP 568 EP 573 DI 10.1109/23.289358 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300091 ER PT J AU WILKERSON, J EDBERG, TK HURLEY, K LIN, RP PARSONS, A SADOULET, B WEISS, S SMITH, G TOLOMEO, J DHARAN, CKH AF WILKERSON, J EDBERG, TK HURLEY, K LIN, RP PARSONS, A SADOULET, B WEISS, S SMITH, G TOLOMEO, J DHARAN, CKH TI SIGHT - A BALLOON BORNE HARD X-RAY TELESCOPE SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID SCINTILLATION DRIFT CHAMBERS AB We report on progress we have made toward developing a large area, high pressure xenon gas scintillator for hard X-ray astrophysics. Proof test results for a low mass pressure vessel are presented. We discuss the design of a high voltage multiplier board operating inside the scintillation chamber. We report on the development of TMAE based proportional tubes for detecting primary scintillation in the xenon. Finally, we describe Monte Carlo tests of a scheme to use conventional photomultiplier tubes. C1 UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT MECH ENGN,BERKELEY,CA 94720. RP WILKERSON, J (reprint author), UNIV CALIF BERKELEY,SPACE SCI LAB,DEPT PHYS,BERKELEY,CA 94720, USA. RI Parsons, Ann/I-6604-2012 NR 9 TC 4 Z9 4 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 APR PY 1991 VL 38 IS 2 BP 580 EP 584 DI 10.1109/23.289360 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300093 ER PT J AU MARTZ, HE ROBERSON, GP SCHNEBERK, DJ AZEVEDO, SG AF MARTZ, HE ROBERSON, GP SCHNEBERK, DJ AZEVEDO, SG TI NUCLEAR-SPECTROSCOPY-BASED, 1ST-GENERATION, COMPUTERIZED-TOMOGRAPHY SCANNERS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB We have built a number of inexpensive, nuclear-spectroscopy-based, first-generation, computerized tomography (CT) scanners to satisfy most Lawrence Livermore National Laboratory (LLNL) CT inspection requirements. We describe these CT scanners in detail and discuss their advantages and disadvantages when compared to the more common, higher-generation, current-integration-based scanners. The major advantage of nuclear-spectroscopy-based scanners is that they can be used to determine an internal, spatially distributed, effective-atomic-number and density map within the object. We also show how these scanners can be used to acquire meaningful chemical information for nondestructive characterization of materials and dimensional information for evaluating assembled components. RP MARTZ, HE (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,L-333,LIVERMORE,CA 94551, USA. NR 16 TC 2 Z9 3 U1 1 U2 1 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 APR PY 1991 VL 38 IS 2 BP 623 EP 635 DI 10.1109/23.289366 PN 1 PG 13 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300099 ER PT J AU ZEMAN, HD DIBIANCA, FA THOMLINSON, WC AF ZEMAN, HD DIBIANCA, FA THOMLINSON, WC TI A KINESTATIC CHARGE DETECTOR FOR INTRAVENOUS CORONARY ANGIOGRAPHY USING SYNCHROTRON RADIATION X-RAYS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article ID AGENT AB A kinestatic charge detector is proposed for improving the efficiency of X-ray flux utilization for intravenous coronary angiography at the National Synchrotron Light Source at Brookhaven National Laboratory. At the desired spatial resolution of 0.25 mm, the use of a kinestatic charge detector to replace the one-dimensional Si(Li) detector used in the earlier studies, will lead to an increase in the utilized X-ray flux of at least a factor of eight, while maintaining the same patient scanning speed of 12 cm/sec. This improvement will result from the possibility of using at least 2 mm of the beam height available at both X-ray energies from the existing dual-energy X-ray monochromator, rather than requiring that the beam be collimated to an 0.25 mm height as required by a one-dimensional detector. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP ZEMAN, HD (reprint author), UNIV TENNESSEE,CTR HLTH SCI,DEPT BIOMED ENGN,MEMPHIS,TN 38163, USA. NR 20 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 641 EP 647 DI 10.1109/23.289368 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300101 ER PT J AU MOSES, WW DERENZO, SE LEVY, PW KIERSTEAD, JA AF MOSES, WW DERENZO, SE LEVY, PW KIERSTEAD, JA TI FURTHER MEASUREMENTS OF THE SCINTILLATION PROPERTIES OF LEAD CARBONATE SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article AB Additional measurements are presented on the scintillation properties of lead carbonate (PbCO3), a recently discovered, heavy inorganic scintillator. The light output of the natural crystal cerussite was measured during Co-60 irradiation at 23-degrees-C. After an exposure of > 2.5 x 10(6) rad the light output increased by 25% and no visible crystal coloring occurred, thus PbCO3 appears to be useful in high radiation fields. The emission spectrum was adequately described by a sum of four gaussian peaks whose position and width did not change during the irradiation. The scintillation light output is temperature dependent, increasing with decreasing temperature from 680 photons/MeV at +30-degrees-C to 3200 photons/MeV at -40-degrees-C to 11,900 photons/MeV at -120-degrees-C. The scintillation decay lifetime was measured with the delayed coincidence method between +30-degrees-C and -140-degrees-C and fit to the sum of four exponentials. At 30-degrees-C the four components are 20% at 3.9 ns, 44% at 24 ns, 26% at 186 ns, and 11% at 1.40-mu-s. At -40-degrees-C the four components are 24% at 37 ns, 45% at 107 ns, 18% at 359 ns, and 12% at 1.07-mu-s. At -120-degrees-C the four components are 0.3% at 1.8 ns, 3.5% at 3.8 ns, 40% at 539 ns, and 56% at 2.71-mu-s. From 30-degrees-C to -140-degrees-C the initial flux remains constant at about 45 photons/ns/MeV. This indicates that, with decreasing temperature, the energy resolution of PbCO3 improves, the dead time increases, and the timing resolution remains constant. The timing spectrum from a synthetic crystal at 25-degrees-C is fit by three components: 22% at 2.0 ns, 69% at 15 ns, and 9% at 92 ns, suggesting that the slower components seen in natural crystals are due to impurities not present in synthetic crystals. C1 UNIV CALIF BERKELEY, BERKELEY, CA 94720 USA. BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. RP MOSES, WW (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. NR 11 TC 4 Z9 4 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9499 EI 1558-1578 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1991 VL 38 IS 2 BP 648 EP 653 DI 10.1109/23.289369 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA FK173 UT WOS:A1991FK17300102 ER PT J AU MILLER, DB HONG, BF BARNES, PR AF MILLER, DB HONG, BF BARNES, PR TI THE RESPONSE OF MOV AND SIC ARRESTERS TO STEEP-FRONT LONGER DURATION CURRENT PULSES SO IEEE TRANSACTIONS ON POWER DELIVERY LA English DT Article; Proceedings Paper CT 1990 SUMMER MEETING OF THE POWER ENGINEERING SOC OF THE IEEE CY JUL 15-19, 1990 CL MINNEAPOLIS, MN SP IEEE, POWER ENGN SOC DE ARRESTERS; STEEP-FRONT IMPULSES AB An 80 m section of 138 kV transmission cable is used to produce pulses with voltages of several hundred kilovolts, currents greater than 20,000 A and voltage risetimes equal to approximately 50 ns. This line pulser is used to test the response of MOV and gapped SiC surge arresters to steep-front, high current, 1.4 microsecond duration pulses. The typical arrester voltage during a pulse consists of a very strong initial "overshoot" voltage spike, followed by a nearly constant "residual" voltage which lasts to the end of the pulse. The "overshoot" voltage is believed to be related to the inductance of the arrester/divider circuit; this voltage increases linearly with peak current and is about the same for the MOV and SiC arresters. The "residual" voltage indicates the protection offered by the arrester due to its voltage clamping action and is larger for the SiC arrester. Replacing the arrester by a similarly sized aluminum tube allows the inductive portion of the response to be removed, and the true arrester response is then seen to be quite fast. C1 N CHINA INST ELECT POWER,BEIJING GRAD SCH,BEIJING,PEOPLES R CHINA. OAK RIDGE NATL LAB,OAK RIDGE,TN. RP MILLER, DB (reprint author), MISSISSIPPI STATE UNIV,ELECT ENGN,MISSISSIPPI STATE,MS 39762, USA. NR 5 TC 2 Z9 2 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 0885-8977 J9 IEEE T POWER DELIVER JI IEEE Trans. Power Deliv. PD APR PY 1991 VL 6 IS 2 BP 666 EP 671 DI 10.1109/61.131125 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA FC053 UT WOS:A1991FC05300027 ER PT J AU JOHANSSON, EM FITCH, JP AF JOHANSSON, EM FITCH, JP TI REMARKS ON TRANSLATION BY SIGN MODULATION SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Letter AB Sign modulation is often used in digital signal processing applications to translate the origin of a signal when using fixed-origin algorithms to compute the discrete Fourier transform (DFT). Sign modulation applied in either the sample domain or the transform domain is appropriate for even length signals, but introduces a phase error if modulation is performed in both domains and the dimensions of the signal are not integral multiples of four. RP JOHANSSON, EM (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 3 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 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD APR PY 1991 VL 39 IS 4 BP 977 EP 978 DI 10.1109/78.80928 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA FD675 UT WOS:A1991FD67500031 ER PT J AU WOO, LK MAURYA, MR TOLPPI, CJ JACOBSON, RA YANG, SM ROSE, E AF WOO, LK MAURYA, MR TOLPPI, CJ JACOBSON, RA YANG, SM ROSE, E TI SYNTHESIS AND CHARACTERIZATION OF A NEW BIS-ALANYL-APPENDED PORPHYRIN AND ITS MONONUCLEAR CU(II), NI(II) AND ZN(II) COMPLEXES - CRYSTAL-STRUCTURE OF THE NI(II) COMPLEX SO INORGANICA CHIMICA ACTA LA English DT Article ID COPPER COMPLEX; (5,10,15,20-TETRAMETHYLPORPHYRINATO)NICKEL(II); DISPLACEMENT; BINDING; OXIDASE; MODELS AB A new multi-chelating ligand, cis-5,15-bis(o-[beta-alanylamido]phenyl)-2,8,12,18-tetraethyl-3,7,13,17-tetramethylporphyrin, cis-(ala)2DPE, has been synthesized. Treatment of cis-(ala)2DPE with methanol solutions of Ni(II), Cu(II) or Zn(II) leads to the formation of mononuclear metal complexes in which the metal has inserted into the porphyrin core. An X-ray structure determination was carried out for [cis-(ala)2DPE]Ni(II).CHCl3.CH3OH. Crystal data are as follows: monoclinic, P2(1)/n, a = 14.195(5), b = 12.175(6), c = 28.071(1) angstrom, beta = 98.97(3)-degrees, R = 0.085, R(w) = 0.089. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. UNIV PARIS 06,CHIM ORGAN LAB,UA 408,F-75230 PARIS 05,FRANCE. RP WOO, LK (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. NR 30 TC 8 Z9 8 U1 0 U2 1 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 APR 1 PY 1991 VL 182 IS 1 BP 41 EP 48 DI 10.1016/S0020-1693(00)85184-1 PG 8 WC Chemistry, Inorganic & Nuclear SC Chemistry GA FQ489 UT WOS:A1991FQ48900007 ER PT J AU RAYNER, S AF RAYNER, S TI INTERNATIONAL-COOPERATION - BUILDING REGIMES FOR NATURAL-RESOURCE MANAGEMENT AND THE ENVIRONMENT - YOUNG,OR SO INTERNATIONAL AFFAIRS LA English DT Book Review RP RAYNER, S (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0020-5850 J9 INT AFF JI Int. Aff. PD APR PY 1991 VL 67 IS 2 BP 341 EP 342 DI 10.2307/2620873 PG 2 WC International Relations SC International Relations GA FM707 UT WOS:A1991FM70700051 ER PT J AU SUGAMA, T CARCIELLO, NR AF SUGAMA, T CARCIELLO, NR TI INTERFACES OF POLYPHENYLENE SULFIDE-TO-METAL JOINTS SO INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES LA English DT Article DE POLYPHENYLENE SULFIDE; STEELS; BOND STRENGTH; INTERFACE; X-RAY PHOTOELECTRON SPECTROSCOPY AB High-temperature polyphenylene sulphide (PPS) film was deposited on the surface of cold-rolled stainless and galvanized steels by slurry coating in N2 and O2 gases at 350-degrees-C The value of the interfacial PPS/steel bond strength depended primarily on the species of sulphur-related iron compounds formed as reaction products at the interfaces. The order of these reaction products, which play an important role in developing bond strength, was Fe2(SO4)3 > FeSO4 > FeS. In contrast, the conversion of ZnS formed at the PPS/galvanized steel interfaces, into ZnSO4 led to a catastrophic loss of bond strength. RP SUGAMA, T (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,DIV ENERGY EFFICIENCY & CONSERVAT,UPTON,NY 11973, USA. NR 0 TC 19 Z9 19 U1 1 U2 2 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0143-7496 J9 INT J ADHES ADHES JI Int. J. Adhes. Adhes. PD APR PY 1991 VL 11 IS 2 BP 97 EP 104 DI 10.1016/0143-7496(91)90033-E PG 8 WC Engineering, Chemical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA GD262 UT WOS:A1991GD26200007 ER PT J AU MILLER, JA BOWMAN, CT AF MILLER, JA BOWMAN, CT TI KINETIC MODELING OF THE REDUCTION OF NITRIC-OXIDE IN COMBUSTION PRODUCTS BY ISOCYANIC ACID SO INTERNATIONAL JOURNAL OF CHEMICAL KINETICS LA English DT Article ID THERMAL DENOX PROCESS; SELECTIVE REDUCTION; CYANURIC ACID; AMMONIA; NO; CHEMISTRY; REMOVAL; NH AB The RAPRENO(x) process for NO reduction in combustion products involves reaction of nitric oxide with isocyanic acid. We have developed a mechanism for the gas-phase reaction of isocyanic acid with nitric oxide in the presence of various amounts of O2, H2O, and CO. Kinetics calculations using the mechanism are compared with the experimental data of Siebers and Caton, and the model reproduces all trends of these data. Sensitivity and rate-of-production analyses show that the reactions of HNCO with OH, O, and H play a major role in the NO-removal process and that NO removal occurs primarily by reaction of NO with NCO to form N2O, which subsequently reacts slowly to form N2. The overall reaction is critically dependent on production of radicals. When O2, H2O, and CO are present, the radicals are supplied by the moist-CO chain branching sequence. When any of these species is absent, radicals must be supplied by other reactions, principally the N2O decomposition reaction and the reaction of the NH2 radical with NO. C1 STANFORD UNIV,DEPT MECH ENGN,STANFORD,CA 94305. RP MILLER, JA (reprint author), SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94551, USA. NR 46 TC 154 Z9 162 U1 3 U2 19 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0538-8066 J9 INT J CHEM KINET JI Int. J. Chem. Kinet. PD APR PY 1991 VL 23 IS 4 BP 289 EP 313 DI 10.1002/kin.550230403 PG 25 WC Chemistry, Physical SC Chemistry GA FF937 UT WOS:A1991FF93700002 ER PT J AU WANG, QS MCDERMOTT, DB LIN, AT LUHMANN, NC CHU, KR SALOP, A CAPLAN, M AF WANG, QS MCDERMOTT, DB LIN, AT LUHMANN, NC CHU, KR SALOP, A CAPLAN, M TI CARM AMPLIFIER DESIGNS FOR HIGH-POWER SO INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES LA English DT Article ID CYCLOTRON AUTORESONANCE MASERS; GYROTRON; GAIN AB The cyclotron autoresonance maser (CARM) is shown to be capable of extremely high power efficient operation with relatively weak magnetic field requirements. A general description of the CARM traveling wave amplifier is presented. The linear theory is applied to study the stability of the device and a self-consistent numerical simulation code is used to predict the performance. It is found that grazing intersection often gives superior performance, especially for high current electron beams. The designs of two CARM amplifiers for the applications of a high gradient rf linac and electron cyclotron resonance plasma heating as well as a proof of principle experiment are presented. C1 NATL TSING HUA UNIV,HSINCHU 300,TAIWAN. VARIAN ASSOCIATES INC,PALO ALTO,CA 94303. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP WANG, QS (reprint author), UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024, USA. NR 20 TC 6 Z9 6 U1 0 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0195-9271 J9 INT J INFRARED MILLI JI Int. J. Infrared Millimeter Waves PD APR PY 1991 VL 12 IS 4 BP 297 EP 322 DI 10.1007/BF01009405 PG 26 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA FF935 UT WOS:A1991FF93500001 ER PT J AU MILLER, JH NELSON, JM YE, M SWENBERG, CE SPEICHER, JM BENHAM, CJ AF MILLER, JH NELSON, JM YE, M SWENBERG, CE SPEICHER, JM BENHAM, CJ TI NEGATIVE SUPERCOILING INCREASES THE SENSITIVITY OF PLASMID DNA TO SINGLE-STRAND BREAK INDUCTION BY X-RAYS SO INTERNATIONAL JOURNAL OF RADIATION BIOLOGY LA English DT Article AB Negatively supercoiled topoisomers of the plasmid pIBI 30 were irradiated with 250 kV X-rays and assayed for strand scission by agarose gel electrophoresis. The survival of supercoiled molecules (Form I) decreased exponentially with increasing X-ray exposure and the dose required to reduce the fraction of DNA in Form I to 37% of its value in unirradiated controls (D37) decreased with increasing negative superhelicity. This enhanced radiation sensitivity of underwound DNA is tentatively attributed to the transient denaturation of the double helix that increases the susceptibility of individual strands to free radical attack. C1 ARMED FORCES RADIOBIOL RES INST, DEPT RADIAT BIOCHEM, BETHESDA, MD 20814 USA. MT SINAI MED CTR, DEPT BIOMATH SCI, NEW YORK, NY 10029 USA. RP MILLER, JH (reprint author), PACIFIC NW LAB, DEPT BIOL & CHEM, RICHLAND, WA 99352 USA. RI Benham, Craig/G-1512-2013 NR 21 TC 12 Z9 12 U1 1 U2 2 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0955-3002 J9 INT J RADIAT BIOL JI Int. J. Radiat. Biol. PD APR PY 1991 VL 59 IS 4 BP 941 EP 949 DI 10.1080/09553009114550831 PG 9 WC Biology; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA FL949 UT WOS:A1991FL94900007 PM 1674278 ER PT J AU LO, EH DELAPAZ, RL FRANKEL, KA POLJAK, A PHILLIPS, MH BRENNAN, KM WOODRUFF, KH VALK, PE STEINBERG, GK FABRIKANT, JI AF LO, EH DELAPAZ, RL FRANKEL, KA POLJAK, A PHILLIPS, MH BRENNAN, KM WOODRUFF, KH VALK, PE STEINBERG, GK FABRIKANT, JI TI MRI AND PET OF DELAYED HEAVY-ION RADIATION-INJURY IN THE RABBIT BRAIN SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Article DE MAGNETIC RESONANCE IMAGING (MRI); POSITRON EMISSION TOMOGRAPHY (PET); DELAYED RADIATION INJURY; HEAVY-IONS; BRAIN; RABBITS ID RAT-BRAIN; THERAPEUTIC IRRADIATION; NERVOUS-SYSTEM; WHITE MATTER; DAMAGE; TISSUES AB Magnetic resonance imaging (MRI) and positron emission tomography (PET) techniques were used to obtain in vivo scans of delayed (30 GyE helium ion, 230 MeV/u) radiation injury in rabbit brain. T2-weighted (T2W) MRI scans demonstrated alterations that were restricted primarily to the white matter tracts and the deep perithalamic and thalamic regions. Quantitative measurements of T2 and T1 values demonstrated wide variations in absolute values. However, paired comparisons in hemibrain-irradiated rabbits revealed significant increases in T2 (p < 0.001) and T1 (p < 0.01) in irradiated versus unirradiated brain. Gadolinium DTPA (GdDTPA) enhanced MRI and Rubidium-82 (Rb-82) PET detected focal regions of blood-brain barrier (BBB) disruption restricted to the deep white matter and thalamic regions. Sequential GdDTPA enhanced MRI scans showed the spreading of the tracer from the initial site of contrast enhancement. 18Fluorodeoxyglucose (18FDG) PET studies demonstrated the markedly depressed metabolic profiles of irradiated brain. Histological findings of tissue edema and necrosis correlated well with the in vivo imaging abnormalities. These initial studies demonstrate that the irradiated rabbit brain is a suitable animal model for examining the delayed effects of radiation injury in the brain. C1 STANFORD UNIV,MED CTR,SCH MED,DEPT NEURORADIOL,STANFORD,CA 94305. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. BROOKSIDE HOSP,RICHMOND,CA. RP LO, EH (reprint author), STANFORD UNIV,MED CTR,SCH MED,DEPT NEUROSURG,S-006,STANFORD,CA 94305, USA. FU NCRR NIH HHS [RR05918] NR 32 TC 24 Z9 24 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-3016 J9 INT J RADIAT ONCOL JI Int. J. Radiat. Oncol. Biol. Phys. PD APR PY 1991 VL 20 IS 4 BP 689 EP 696 PG 8 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA FC806 UT WOS:A1991FC80600007 PM 2004945 ER PT J AU QUIET, CA WEICHSELBAUM, RR GRDINA, DJ AF QUIET, CA WEICHSELBAUM, RR GRDINA, DJ TI VARIATION IN RADIATION SENSITIVITY DURING THE CELL-CYCLE OF 2 HUMAN SQUAMOUS-CELL CARCINOMAS SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Article DE RADIATION AGE RESPONSE; HUMAN SQUAMOUS CELL CARCINOMA; PREDICTIVE ASSAYS ID ORAL CAVITY; CENTRIFUGAL ELUTRIATION; DNA CONTENT; RADIOTHERAPY; PROGNOSIS; HEAD; HYDROXYUREA; RESPONSES; SARCOMA; TUMORS AB Changes in the radiation age response are described in two cell lines derived from human squamous cell carcinomas. A radioresistant tumor cell line, JSQ-3, has a D0 of 240 cGy and is polyploid with a DNA content of 2.68. A relatively radiosensitive tumor cell line, SCC-61, has a D0 of 126 cGy and has a DNA index of 1.16. Tumor cells were separated and synchronized by centrifugal elutriation; flow cytometry was used to determine cell-cycle parameters and relative synchrony. The radioresistant cell line, JSQ-3B, was found to have twice the number of cells in S-phase than the more sensitive cell line (28% and 13% for JSQ-3B and SCC-61B, respectively). Both cell lines, despite differences in intrinsic radiosensitivity, were most resistant during S-phase (D0s of 258 and 157 cGy for JSQ-3B and SCC-61B, respectively) and were maximally sensitive during G1 (D0s of 193 and 95 cGy for JSQ-3B and SCC-61B, respectively). Clinical implications of our findings are discussed. C1 UNIV CHICAGO,CTR RADIAT THERAPY,CHICAGO,IL 60637. ARGONNE NATL LAB,DEPT BIOL & MED SCI,ARGONNE,IL 60439. RP QUIET, CA (reprint author), UNIV CHICAGO,MICHAEL REESE MED CTR,DEPT RADIAT & CELLULAR ONCOL,CHICAGO,IL 60637, USA. NR 24 TC 31 Z9 33 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-3016 J9 INT J RADIAT ONCOL JI Int. J. Radiat. Oncol. Biol. Phys. PD APR PY 1991 VL 20 IS 4 BP 733 EP 738 PG 6 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA FC806 UT WOS:A1991FC80600013 PM 2004949 ER PT J AU LINSTADT, DE CASTRO, JR PHILLIPS, TL AF LINSTADT, DE CASTRO, JR PHILLIPS, TL TI NEON ION RADIOTHERAPY - RESULTS OF THE PHASE-I/II CLINICAL-TRIAL SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Article DE NEON; CARCINOMA; SARCOMA; HEAVY IONS; HEAVY CHARGED PARTICLES; HIGH-LET; RADIOTHERAPY; CHORDOMA; BILE DUCT; PARANASAL SINUS; PROSTATE; SALIVARY GLAND; SOFT TISSUE SARCOMA; BONE SARCOMA ID FAST-NEUTRON RADIOTHERAPY; THERAPY-ONCOLOGY-GROUP; CHARGED-PARTICLE RADIOTHERAPY; SQUAMOUS-CELL CARCINOMAS; SALIVARY-GLAND TUMORS; RAT-BRAIN TUMOR; RADIATION-THERAPY; SOFT-TISSUE; MALIGNANT GLIOMAS; RANDOMIZED RTOG AB Neon ion radiotherapy possesses biologic and physical advantages over megavoltage X rays. Biologically, the neon beam reduces the oxygen enhancement ratio and increases relative biological effectiveness. Cells irradiated by neon ions show less variation in cell-cycle related radiosensitivity and decreased repair of radiation injury. The physical behavior of heavy charged particles allows precise delivery of high radiation doses to tumors while minimizing irradiation of normal tissues. In 1979 a Phase I-II clinical trial was started at Lawrence Berkeley Laboratory using neon ions to irradiate patients for whom conventional treatment modalities were ineffective. By the end of 1988 a total of 239 patients had received a minimum neon physical dose of 1000 cGy (median follow-up for survivors 32 months). Compared with historical results, the 5-year actuarial disease-specific survival (DSS5) and local control (LC5) rates suggest that neon treatment improves outcome for several types of tumors: a) advanced or recurrent macroscopic salivary gland carcinomas (DSS5 59%; LC5 61%); b) paranasal sinus tumors (DSS5 69%; LC5 69% for macroscopic disease); c) advanced soft tissue sarcomas (DSS5 56%, LC5 56% for macroscopic disease); d) macroscopic sarcomas of bone (DSS5 45%; LC5 59%); e) locally advanced prostate carcinomas (DSS5 90%; LC5 75%); and f) biliary tract carcinomas (DSS5 28%; LC5 44%). Treatment of malignant gliomas, pancreatic, gastric, esophageal, lung, and advanced or recurrent head and neck cancer has been less successful; results for these tumors appear no better than those achieved with conventional x-ray therapy. These findings suggest that Phase III trials using the neon beam should be implemented for selected malignancies. C1 UNIV CALIF SAN FRANCISCO,DEPT RADIAT ONCOL,SAN FRANCISCO,CA 94143. NO CALIF CANC CTR,BERKELEY,CA. RP LINSTADT, DE (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT RADIAT THERAPY,DIV MED RES,BLDG 55-121,BERKELEY,CA 94720, USA. FU NCI NIH HHS [CA 21874, CA 19138] NR 54 TC 44 Z9 45 U1 3 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-3016 J9 INT J RADIAT ONCOL JI Int. J. Radiat. Oncol. Biol. Phys. PD APR PY 1991 VL 20 IS 4 BP 761 EP 769 PG 9 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA FC806 UT WOS:A1991FC80600017 PM 2004953 ER PT J AU PHILLIPS, MH KESSLER, M CHUANG, FYS FRANKEL, KA LYMAN, JT FABRIKANT, JI LEVY, RP AF PHILLIPS, MH KESSLER, M CHUANG, FYS FRANKEL, KA LYMAN, JT FABRIKANT, JI LEVY, RP TI IMAGE CORRELATION OF MRI AND CT IN TREATMENT PLANNING FOR RADIOSURGERY OF INTRACRANIAL VASCULAR MALFORMATIONS SO INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS LA English DT Article DE STEREOTAXIC RADIOSURGERY; CHARGED PARTICLES; AVM; MAGNETIC RESONANCE; TREATMENT PLANNING ID BRAGG PEAK RADIOSURGERY; ARTERIOVENOUS-MALFORMATIONS; STEREOTACTIC RADIOSURGERY; DISORDERS AB Magnetic resonance imaging (MRI) has been incorporated with stereotactic cerebral angiography and computed tomography (CT) in the treatment planning process of heavy ion radiosurgery of intracranial arteriovenous malformations (AVM's). Correlation of the images of the AVM and normal tissue on each of these neuroradiological imaging modalities is achieved by means of fiducial markers. The computerized transfer of angiographic information to the CT images regarding the size, shape, and location of the abnormal vasculature has been described in an earlier report. A separate computer program calculates a fit between individual fiducial markers on the CT and MR images that enables the transfer of contours between the two imaging modalities. The MR images aid in the determination of the 3-dimensional shape of the AVM, adding to the information derived from the two angiographic projections. Currently, MRI cannot replace cerebral angiography in delineating the entire arterial phase of the AVM. Magnetic resonance imaging is invaluable in the treatment planning of angiographically-occult AVM's, determining the location, size, and shape of the volume to be treated. Correlation of the CT and MRI images allows for the transfer of CT-calculated isodose contours to the MRI images to aid in the determination of optimal treatment plans. C1 UNIV MICHIGAN,DEPT RADIAT ONCOL,ANN ARBOR,MI 48109. RP PHILLIPS, MH (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 18 TC 46 Z9 46 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-3016 J9 INT J RADIAT ONCOL JI Int. J. Radiat. Oncol. Biol. Phys. PD APR PY 1991 VL 20 IS 4 BP 881 EP 889 PG 9 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA FC806 UT WOS:A1991FC80600033 PM 2004967 ER PT J AU NANN, S RIORDAN, C AF NANN, S RIORDAN, C TI SOLAR SPECTRAL IRRADIANCE UNDER CLEAR AND CLOUDY SKIES - MEASUREMENTS AND A SEMIEMPIRICAL MODEL SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID RADIATION DATA-BASE; EARTHS SURFACE; ATMOSPHERES; COMPONENTS; INSOLATION; SERI AB In a combined effort, the Centre for Solar Energy and Hydrogen Research in Germany and the Solar Energy Research Institute in the United States analyzed several thousand measurements of the solar spectral irradiance recorded at four sites. The goal was to develop a semiempirical model that describes the total solar spectral irradiance for clear and cloudy sky conditions based on readily available input data. To investigate how the spectral transmission of clouds deviates from an assumed neutral density filter, the measured spectra are compared with simulated clear-sky spectra. A correlation is established between the cloud thickness and the relatively higher transmission of clouds in the ultraviolet and blue region of the solar spectrum. Using this approach, a semiempirical model is proposed based solely on global and diffuse broadband irradiance measurements, precipitable water-vapor data, and the sun's position. The model, called SEDES1, is applied to calculate spectral irradiance in short time steps (30 or 60 minutes) that are needed for either the design and performance analysis of spectrally selective solar energy conversion systems or to predict daylight availability. The results are also applicable to current climate research areas such as validating radiative transfer codes. C1 SOLAR ENERGY RES INST,1617 COLE BLVD,GOLDEN,CO 80401. CTR SOLAR ENERGY & HYDROGEN RES,STUTTGART,GERMANY. NR 41 TC 78 Z9 82 U1 1 U2 15 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 APR PY 1991 VL 30 IS 4 BP 447 EP 462 DI 10.1175/1520-0450(1991)030<0447:SSIUCA>2.0.CO;2 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA FL199 UT WOS:A1991FL19900005 ER PT J AU PEDEN, CHF HOUSTON, JE AF PEDEN, CHF HOUSTON, JE TI EVIDENCE FOR A CARBONATE SPECIES DURING CO OXIDATION ON DEACTIVATED RH(111) SO JOURNAL OF CATALYSIS LA English DT Article ID OXYGEN; CATALYSTS; KINETICS; CHEMISORPTION; MONOXIDE; RH(100); METALS; WATER RP PEDEN, CHF (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. OI Peden, Charles/0000-0001-6754-9928 NR 23 TC 14 Z9 14 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9517 J9 J CATAL JI J. Catal. PD APR PY 1991 VL 128 IS 2 BP 405 EP 414 DI 10.1016/0021-9517(91)90299-J PG 10 WC Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA FE176 UT WOS:A1991FE17600011 ER PT J AU ALLY, MR KLATT, LN ZALTASH, A LINKOUS, RL AF ALLY, MR KLATT, LN ZALTASH, A LINKOUS, RL TI DENSITIES AND REFRACTIVE-INDEXES OF AQUEOUS (LI, K, NA) NO3 MIXTURES SO JOURNAL OF CHEMICAL AND ENGINEERING DATA LA English DT Article AB This paper describes experimental procedures and techniques for measuring densities and/or refractive indexes of aqueous salt solutions between 25 and 200-degrees-C and with 18.90-90.50 wt % mixed salt (LINO3, KNO3, and NaNO3). An electrolyte solution of (Li, K, Na) NO3 salts in water was chosen for study because of its recent development as a potential high-temperature heat pump fluid, but any other appropriate fluid may be accommodated for study in the apparatus. The densities and refractive indexes are shown to represent a convenient way of measuring the concentration of salt (or water), and accuracies of +/- 0.8 and +/- 0.3 wt % total mixed salt were achieved by using the above two methods, respectively. For highly concentrated salt solutions, with their attendant handling problems, this technique of concentration measurement is convincingly more convenient than the traditional methods of titration or gravimetric analysis. C1 OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. RP ALLY, MR (reprint author), OAK RIDGE NATL LAB,DIV ENERGY,OAK RIDGE,TN 37831, USA. NR 5 TC 4 Z9 4 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0021-9568 J9 J CHEM ENG DATA JI J. Chem. Eng. Data PD APR PY 1991 VL 36 IS 2 BP 209 EP 213 DI 10.1021/je00002a018 PG 5 WC Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Chemistry; Engineering GA FG796 UT WOS:A1991FG79600018 ER PT J AU HAVENITH, M COHEN, RC BUSAROW, KL GWO, DH LEE, YT SAYKALLY, RJ AF HAVENITH, M COHEN, RC BUSAROW, KL GWO, DH LEE, YT SAYKALLY, RJ TI MEASUREMENT OF THE INTERMOLECULAR VIBRATION-ROTATION TUNNELING SPECTRUM OF THE AMMONIA DIMER BY TUNABLE FAR INFRARED-LASER SPECTROSCOPY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID RESONANCE OPTOTHERMAL SPECTROSCOPY; GROUP THEORETICAL TREATMENT; WATER DIMER; HCL DIMER; ENERGY DECOMPOSITION; HYDROGEN-BONDS; HF DIMER; MICROWAVE; PREDISSOCIATION; (HF)2 AB Over 150 lines in six tunneling subbands of an intermolecular vibration located near 25 cm-1 have been measured with partial hyperfine resolution and assigned to (NH3)2. The transitions sample all three types of tunneling states (A, G, E) and are consistent with the following assumptions: (1) G36 is the appropriate molecular symmetry group; (2) the equilibrium structure contains a plane of symmetry; (3) interchange tunneling of inequivalent monomers occurs via a trans path; (4) the 2C3 + I limit of hydrogen exchange tunneling is appropriate; (5) tunneling and rotational motions are separable. A qualitative vibration-rotation tunneling energy level diagram is presented. Strong perturbations are observed among the states of E symmetry. This work supports the conclusions of Nelson et al. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720. RI Cohen, Ronald/A-8842-2011 OI Cohen, Ronald/0000-0001-6617-7691 NR 46 TC 35 Z9 35 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 APR 1 PY 1991 VL 94 IS 7 BP 4776 EP 4789 DI 10.1063/1.460562 PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA FF820 UT WOS:A1991FF82000009 ER PT J AU MULFORD, RN DEWEY, HJ BAREFIELD, JE AF MULFORD, RN DEWEY, HJ BAREFIELD, JE TI FLUORESCENCE AND ABSORPTION-SPECTROSCOPY OF THE NEAR-INFRARED VIBRONIC TRANSITIONS IN MATRIX-ISOLATED NPF6 SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID PUF6; HEXAFLUORIDES; INTENSITIES AB The 4-GAMMA-8u and 2-GAMMA-7u excited states of NpF6 have been characterized in a solid argon matrix using absorption, fluorescence, and fluorescence excitation spectroscopies. Analysis of the vibronic bands of these states gives excited state vibrational frequencies which are compared to those of the ground state. The 4-GAMMA-8u state fluoresces with a 4.6 ms lifetime and a quantum yield near unity. RP MULFORD, RN (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 16 TC 10 Z9 10 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 APR 1 PY 1991 VL 94 IS 7 BP 4790 EP 4796 DI 10.1063/1.460563 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA FF820 UT WOS:A1991FF82000010 ER PT J AU NOVOA, JJ WHANGBO, MH WILLIAMS, JM AF NOVOA, JJ WHANGBO, MH WILLIAMS, JM TI INTERACTIONS ENERGIES ASSOCIATED WITH SHORT INTERMOLECULAR CONTACTS OF C-H BONDS .2. ABINITIO COMPUTATIONAL STUDY OF THE C-H...H-C INTERACTIONS IN METHANE DIMER SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SET SUPERPOSITION ERROR; CIPSI ALGORITHM; FULL; POLARIZABILITIES; MOLECULES; CONVERGENCE; (H-2)2; MODEL; BE-2; CH4 AB On the basis of single-and multireference ab initio calculations on (Be)2 and (H-2)2, we suggest that van der Waals systems with large highest occupied molecular orbital-lowest unoccupied molecular orbital gap can be reasonably well described by single reference MPn (n = 2-4) calculations if the basis set is large enough. The binding energies of C-H...H-C contacts are then examined by performing single reference MPn calculations on (CH4)2 dimer. Our study shows that (CH4)2 is bound in all possible CH4...CH4 arrangements, and that those arrangements with more than one C-H...H-C contact lead to a greater amount of stabilization than does the arrangement with one C-H...H-C contact. The potential energy curves obtained for staggered arrangements of (CH4)2 by the MP2 calculations with the 6-311G(2d,2p) basis set are in close agreement with the experimentally deduced, isotropic potential curve. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. N CAROLINA STATE UNIV,DEPT CHEM,RALEIGH,NC 27695. RI Novoa, Juan/B-3525-2013 OI Novoa, Juan/0000-0003-3577-1182 NR 54 TC 55 Z9 55 U1 0 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 APR 1 PY 1991 VL 94 IS 7 BP 4835 EP 4841 DI 10.1063/1.460568 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA FF820 UT WOS:A1991FF82000015 ER PT J AU HARRISON, RJ AF HARRISON, RJ TI APPROXIMATING FULL CONFIGURATION-INTERACTION WITH SELECTED CONFIGURATION-INTERACTION AND PERTURBATION-THEORY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DOUBLE-ZETA BASIS; CI CALCULATIONS; ENERGY EXTRAPOLATION; ELECTRON-AFFINITY; EFFICIENT METHOD; STATE; REPRESENTATION; WAVEFUNCTIONS; CONVERGENCE; MATRICES AB Selected configuration interaction (CI) calculations and second order perturbation theory are combined to systematically approach the full-CI limit. The resulting algorithm has negligible requirement for memory or disk space, being limited only by available cpu time. Comparison is made to existing full-CI benchmarks (DZ and DZP water, the oxygen atom and its anion, ammonia and the magnesium atom). In all cases the full-CI result is recovered to better than 0.1 kcal/mol. RP ARGONNE NATL LAB, DIV CHEM, THEORET CHEM GRP, ARGONNE, IL 60439 USA. NR 50 TC 114 Z9 114 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 APR 1 PY 1991 VL 94 IS 7 BP 5021 EP 5031 DI 10.1063/1.460537 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA FF820 UT WOS:A1991FF82000034 ER PT J AU LESAR, R NAJAFABADI, R SROLOVITZ, DJ AF LESAR, R NAJAFABADI, R SROLOVITZ, DJ TI THERMODYNAMICS OF SOLID AND LIQUID EMBEDDED-ATOM-METHOD METALS - A VARIATIONAL STUDY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID TRANSITION-METALS; FREE-ENERGY; ALLOYS; FCC; CONSISTENT; AL1-XZNX; EQUATION AB We present results of variational calculations of the Helmholtz free energy and the thermodynamic properties of a series of metallic liquids and solids (Ag, Au, Cu, Ni, Pd, Pt) described by embedded-atom-method potentials. For the solids, we use a variational procedure based on an Einstein-model reference state. The free energies of liquids are calculated with an approximate variational method proposed by Ross. At the respective melting points, the present results for the Helmholtz free energy are within about 1% of the results of accurate Monte Carlo (MC) calculations with the same interaction potentials, both for the fluid and the solid. The average error in the melting points calculated with the present procedure relative to Monte Carlo results is about 7.5%. The internal energies and entropies are compared to MC results, and show, in general, good agreement. C1 UNIV MICHIGAN,DEPT MAT SCI & ENGN,ANN ARBOR,MI 48109. RP LESAR, R (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. RI LeSar, Richard/G-1609-2012 NR 31 TC 38 Z9 38 U1 0 U2 4 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 APR 1 PY 1991 VL 94 IS 7 BP 5090 EP 5097 DI 10.1063/1.460547 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA FF820 UT WOS:A1991FF82000044 ER PT J AU MIKKELSEN, DR AF MIKKELSEN, DR TI SOLUTION OF THE FOKKER-PLANCK EQUATION WITH MIXING OF ANGULAR HARMONICS BY BEAM BEAM CHARGE-EXCHANGE SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID INJECTION; PLASMAS; REACTOR RP MIKKELSEN, DR (reprint author), PRINCETON UNIV,PLASMA PHYS LAB,PRINCETON,NJ 08543, USA. NR 13 TC 3 Z9 3 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD APR PY 1991 VL 93 IS 2 BP 336 EP 342 DI 10.1016/0021-9991(91)90187-P PG 7 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA FG965 UT WOS:A1991FG96500007 ER PT J AU RATOWSKY, RP FLECK, JA AF RATOWSKY, RP FLECK, JA TI TREATMENT OF ANGULAR DERIVATIVES IN THE SCHRODINGER-EQUATION BY THE FINITE FOURIER-SERIES METHOD SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID SPECTRAL METHOD; PROPAGATION PROBLEMS; TIME RP RATOWSKY, RP (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 13 TC 1 Z9 1 U1 1 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD APR PY 1991 VL 93 IS 2 BP 376 EP 387 DI 10.1016/0021-9991(91)90190-V PG 12 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA FG965 UT WOS:A1991FG96500010 ER PT J AU UMAR, AS WU, J STRAYER, MR BOTTCHER, C AF UMAR, AS WU, J STRAYER, MR BOTTCHER, C TI BASIS-SPLINE COLLOCATION METHOD FOR THE LATTICE SOLUTION OF BOUNDARY-VALUE-PROBLEMS SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID HARTREE-FOCK CALCULATIONS C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. RP UMAR, AS (reprint author), VANDERBILT UNIV,DEPT PHYS & ASTRON,NASHVILLE,TN 37235, USA. RI Umar, Ahmet/J-4125-2013 OI Umar, Ahmet/0000-0002-9267-5253 NR 12 TC 59 Z9 59 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD APR PY 1991 VL 93 IS 2 BP 426 EP 448 DI 10.1016/0021-9991(91)90193-O PG 23 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA FG965 UT WOS:A1991FG96500013 ER PT J AU RENO, JL JONES, ED AF RENO, JL JONES, ED TI GROWTH AND OPTICAL CHARACTERIZATION OF STRAINED CDZNTE/CDTE QUANTUM-WELLS SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE CDZNTE/CDTE; QUANTUM WELLS; PHOTOLUMINESCENCE; MBE ID BEAM EPITAXIAL-GROWTH; CDTE-ZNTE; SUPERLATTICES AB We have grown strained Cd(1-x)Zn(x)Te (x almost-equal-to 0.2)/CdTe single and multiple quantum wells by molecular beam epitaxy. GaAs was used as a substrate. The well widths were systematically increased until the critical thickness was exceeded. Low-temperature (liquid helium) photoluminescence (PL) spectroscopy was used to characterize the films. Two prominent PL peaks were observed: one arising from the quantum well and the other from the barrier matarial. The energy of the quantum well luminescence is consistent with theory when strain is included. The critical layer thickness for the CdTe quantum wells was found to be between 150 and 175 angstrom, in agreement with the model of Matthews and Blakeslee. RP RENO, JL (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 17 TC 3 Z9 3 U1 2 U2 3 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD APR PY 1991 VL 20 IS 4 BP 315 EP 318 DI 10.1007/BF02657897 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA FG303 UT WOS:A1991FG30300006 ER PT J AU NOEL, BW BORELLA, HM LEWIS, W TURLEY, WD BESHEARS, DL CAPPS, GJ CATES, MR MUHS, JD TOBIN, KW AF NOEL, BW BORELLA, HM LEWIS, W TURLEY, WD BESHEARS, DL CAPPS, GJ CATES, MR MUHS, JD TOBIN, KW TI EVALUATING THERMOGRAPHIC PHOSPHORS IN AN OPERATING TURBINE-ENGINE SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 35TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 11-14, 1990 CL BRUSSELS, BELGIUM AB The results of a field test in a commercial turbine engine showed that we can remotely measure the temperature of engine components in operating engines using thermographic phosphors. The remote-measurement method exploits the temperature dependence of the characteristic decay time of the laser-induced fluorescence of thermographic phosphors. This paper summarizes recent work leading up to and including a successful test of the thermographic-phosphor method in an operating turbine engine. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP NOEL, BW (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 6 TC 16 Z9 16 U1 0 U2 2 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4795 J9 J ENG GAS TURB POWER JI J. Eng. Gas. Turbines Power-Trans. ASME PD APR PY 1991 VL 113 IS 2 BP 242 EP 245 DI 10.1115/1.2906554 PG 4 WC Engineering, Mechanical SC Engineering GA FK198 UT WOS:A1991FK19800011 ER PT J AU CARLSON, CL ADRIANO, DC DIXON, PM AF CARLSON, CL ADRIANO, DC DIXON, PM TI EFFECTS OF SOIL-APPLIED SELENIUM ON THE GROWTH AND SELENIUM CONTENT OF A FORAGE SPECIES SO JOURNAL OF ENVIRONMENTAL QUALITY LA English DT Article ID PLANTS; AVAILABILITY; PHOSPHORUS; SELENATE; TOXICITY; BARLEY; CLOVER; SULFUR AB This study was conducted to determine the effects of soil-applied selenate and selenite on the growth and Se content of a forage species, sorgrass (Sorghum vulgare var. sudanense Hitchc.), grown on acid southeastern soils under different soil conditions. A greenhouse pot study was conducted using a factorial design, with two soil types varying in clay and hydrous oxide content (Blanton sand, a loamy, siliceous, thermic Grossarenic Paleudult; and Orangeburg loamy sand, a loamy, siliceous, thermic Typic Paleudult), two soil treatments (limed and unlimed), two Se forms (selenate, SeO4(2-), and selenite, SeO3(2-)), and four Se concentrations (0, 1, 2, and 4 mg Se kg-1 soil). Additions of Se in the selenate form had a greater toxic effect on the plants, reducing plant biomass as much as 97% and increasing plant Se concentrations to as high as 1153 mg Se kg-1. Selenite additions generally did not affect plant biomass, but still resulted in accumulations of Se in aboveground tissues to levels potentially toxic to animals. Selenium concentrations were higher in plants grown on the soil lower in clay and hydrous oxide content. Liming resulted in lower tissue Se concentrations in plants grown on either soil treated with selenate. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. NR 29 TC 19 Z9 20 U1 0 U2 2 PU AMER SOC AGRONOMY PI MADISON PA 677 S SEGOE RD, MADISON, WI 53711 SN 0047-2425 J9 J ENVIRON QUAL JI J. Environ. Qual. PD APR-JUN PY 1991 VL 20 IS 2 BP 363 EP 368 PG 6 WC Environmental Sciences SC Environmental Sciences & Ecology GA FK179 UT WOS:A1991FK17900005 ER PT J AU ANDERSON, TA BEAUCHAMP, JJ WALTON, BT AF ANDERSON, TA BEAUCHAMP, JJ WALTON, BT TI FATE OF VOLATILE AND SEMIVOLATILE ORGANIC-CHEMICALS IN SOILS - ABIOTIC VERSUS BIOTIC LOSSES SO JOURNAL OF ENVIRONMENTAL QUALITY LA English DT Article ID RESPIRATION AB Disappearance of 15 volatile and semivolatile organic compounds was determined in a mixture added to two different soil types, a Captina silt loam (Typic Fragiudult) and McLaurin sandy loam (Typic Paleudults), using experimental procedures to distinguish abiotic losses from biological degradation over a 7-d period. Losses due to volatilization were quantified and mass balances were calculated for each compound. Standard USEPA and National Institute of Occupational Health and Safety (NIOHS) methods were used for sample handling, storage, and analysis. The compounds (methyl ethyl ketone; tetrahydrofuran; chlorobenzene; benzene; chloroform; carbon tetrachloride; p-xylene; 1,2-dichlorobenzene; cis-1,4-dichloro-2-butene; 1,2,3-trichloropropane; 2-chloronaphthalene; ethylene dibromide; hexachlorobenzene; nitrobenzene; and toluene) were applied to the soil in a mixture such that the concentration of each chemical was 100 mg/kg soil (dry wt.). The headspace of the soil samples and matched sterile (autoclaved) controls, which were incubated in the dark at 20-degrees-C in stoppered jars fitted with charcoal traps, was flushed daily to maintain aerobic conditions and to trap vapors. Apparent half-lives for the 15 organic compounds ranged from < 2 to 11.3 d and showed good agreement with published values in the few instances where they were available. Rapid disappearance due to abiotic factors was observed for all chemicals during the 7-d period. Although short-term spike and recovery analyses yielded consistently reproducible recovery for all compounds, careful attempts to account for all losses, including the use of C-14-toluene, were unsuccessful. Nonreversible sorption and preanalysis storage conditions were considered as contributors to this inability to achieve a mass balance. On the basis of these results, we strongly advise positive accounting for all test compounds and degradation products at the conclusion of studies involving volatile and semivolatile compounds. C1 UNIV TENNESSEE,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ENGN PHYS & MATH,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. NR 25 TC 21 Z9 22 U1 0 U2 6 PU AMER SOC AGRONOMY PI MADISON PA 677 S SEGOE RD, MADISON, WI 53711 SN 0047-2425 J9 J ENVIRON QUAL JI J. Environ. Qual. PD APR-JUN PY 1991 VL 20 IS 2 BP 420 EP 424 PG 5 WC Environmental Sciences SC Environmental Sciences & Ecology GA FK179 UT WOS:A1991FK17900014 ER PT J AU HOUPIS, JLJ COSTELLA, MP COWLES, S AF HOUPIS, JLJ COSTELLA, MP COWLES, S TI A BRANCH EXPOSURE CHAMBER FOR FUMIGATING PONDEROSA PINE TO ATMOSPHERIC-POLLUTION SO JOURNAL OF ENVIRONMENTAL QUALITY LA English DT Article AB The investigation of the effects of atmospheric pollution on metabolism and growth of woody species has long been hampered by the very difficult task of exposing mature individuals to controlled environments of air pollutants. This paper describes the design, construction, and testing of an alternative tool to whole-tree enclosures for measuring pollution response in mature woody tissue. The chamber is a new design, though not a new concept, and is referred to as a branch exposure chamber. Designed primarily for ozone and acid precipitation exposures (and used additionally for CO2 measurements), the branch exposure chamber incorporates four major parts: support structure, fan-air supply unit, charcoal filter unit, and exposure chamber. The exposure chamber is a 1.5-m long by 0.7-m diam. cylinder. The chamber is constructed of Teflon sheeting stretched over an aluminum frame; the aluminum frame is totally wrapped with nonreactive, aluminum-backed Teflon tape. Three zones in the chamber affect exposure of the experimental tissue: an initial buffer region for mixing, a main exposure region, and an exhaust frustrum. Aerodynamic testing of the chamber-mixing characteristics show that mixing is uniform and complete within the main exposure region. Thermal buildup within the chamber was a maximum of 3-degrees-C under a wide range of ambient meteorological conditions. Based on current field trials of the chamber, material deterioration due to environmental variables (e.g., ultraviolet radiation, heat oxidants), is not expected to affect operation of the chamber for 24 mo. The BEC is inexpensive to build and operate, and represents a viable alternative to a whole-tree chamber. RP HOUPIS, JLJ (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV ENVIRONM SCI,ECOSYST & MEASUREMENT SCI SECT,POB 5507,LIVERMORE,CA 94550, USA. NR 10 TC 27 Z9 28 U1 0 U2 0 PU AMER SOC AGRONOMY PI MADISON PA 677 S SEGOE RD, MADISON, WI 53711 SN 0047-2425 J9 J ENVIRON QUAL JI J. Environ. Qual. PD APR-JUN PY 1991 VL 20 IS 2 BP 467 EP 474 PG 8 WC Environmental Sciences SC Environmental Sciences & Ecology GA FK179 UT WOS:A1991FK17900021 ER PT J AU MOORE, KR MCCOMAS, DJ RUSSELL, CT STAHARA, SS SPREITER, JR AF MOORE, KR MCCOMAS, DJ RUSSELL, CT STAHARA, SS SPREITER, JR TI GAS-DYNAMIC MODELING OF THE VENUS MAGNETOTAIL SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID SOLAR-WIND FLOW; MAGNETIC-FIELD; PLASMA OBSERVATIONS; PIONEER VENUS; BOW SHOCK; MAGNETOSHEATH; WAKE; CONFIGURATION; IONOPAUSE; PLANETS AB A gasdynamic, convected magnetic field model of the solar wind interaction with Venus is used for the first time to model the steady state Venus magnetotail. Model results are directly compared with observations. The flow obstacle surface is approximated as a tangential discontinuity. The obstacle shape is an input parameter to this model. An initial obstacle shape, accurate on the dayside, is defined by balancing a hydrostatic equilibrium approximation for the internal plasma pressure with an external flow pressure approximation. These pressure approximations produce a cylindrical obstacle in the distant tail. A refined obstacle shape that attempts to balance this same internal pressure with the calculated external flow pressure tapers inward toward the tail axis downstream of the terminator. Cold fluid (photoionized planetary oxygen) is added to the flow about the tapered model obstacle. The resultant bulk plasma flow and magnetic field properties compare well with experimentally observed average proton velocity and magnetic field components in the magnetotail. The added oxygen plasma has significant number densities only within 1 R(V) of the tail axis in the distant tail. The model predicts central magnetotail oxygen plasma number densities of about 0.2 cm-3 and temperatures on the order of 10(6)-degrees-K, flowing tailward at speeds as low as 200 m/s. These properties are consistent with the flat, featureless Pioneer Venus Orbiter plasma analyzer spectra observed in the deep central tail. Pickup ions, in the test particle limit, match direct observations of tail pickup ions. These steady state model results suggest that the mass addition at Venus originating above the dayside ionopause is predominantly fluidlike and produces the slowed flows and severe field draping observed in the central distant tail. Oxygen ions produced higher above the ionopause on the dayside, at much lower number densities, behave more as test particles. Their large gyroradii produce an asymmetric population in the distant outer tail and sheath. C1 UNIV CALIF LOS ANGELES,INST GEOPHYS & PLANETARY PHYS,LOS ANGELES,CA 90024. STANFORD UNIV,DEPT APPL MECH,STANFORD,CA 94305. RMA AEROSP,DEPT IRS,MT VIEW,CA 94043. RP MOORE, KR (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. OI Russell, Christopher/0000-0003-1639-8298 NR 46 TC 17 Z9 17 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 JI J. Geophys. Res-Space Phys. PD APR 1 PY 1991 VL 96 IS A4 BP 5667 EP 5681 DI 10.1029/90JA02251 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FF828 UT WOS:A1991FF82800024 ER PT J AU HESSE, M BIRN, J AF HESSE, M BIRN, J TI PLASMOID EVOLUTION IN AN EXTENDED MAGNETOTAIL SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID GEOMAGNETIC TAIL; EARTHS MAGNETOTAIL; CDAW-8 AB The formation and evolution of a three-dimensional magnetotail plasmid is investigated by means of a three-dimensional resistive MHD simulation. In contrast to earlier simulations, the present one takes place in a tail configuration that includes the transition from a closed field line region to an open far-tail region with a distant X line or separator. This is necessary to identify the plasmoid and to study its properties during the separation from Earth. Particular emphasis is placed on the plasma acceleration and the relative importance of pressure forces and Lorentz forces. Two distinct phases of the plasmoid evolution are analyzed, the growth, characterized by accumulation of plasma that has already been accelerated by Lorentz forces outside the plasmoid, and the severance of the plasmoid from Earth, which takes a finite amount of time, propagating from midnight toward the flanks. This phase is characterized by a decrease in plasmoid speed due to the fact that accumulation of plasma of slower speed continues near the flanks and at the leading edge, while the plasmoid becomes severed near midnight. This phase is also characterized by a complicated topological structure of the plasmoid consisting of intermingled flux tubes with different connections. The total force on the plasmoid itself is initially dominated by the pressure gradients and later by the Lorentz forces. These forces, however, do not contribute significantly to the plasmoid motion in comparison to the accumulation of momentum. RP HESSE, M (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,MS 0438,LOS ALAMOS,NM 87545, USA. RI Hesse, Michael/D-2031-2012 NR 20 TC 42 Z9 43 U1 0 U2 3 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 APR 1 PY 1991 VL 96 IS A4 BP 5683 EP 5696 DI 10.1029/90JA02503 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA FF828 UT WOS:A1991FF82800025 ER PT J AU MEASE, RC GATLEY, SJ FRIEDMAN, AM AF MEASE, RC GATLEY, SJ FRIEDMAN, AM TI SYNTHESIS OF HIGH SPECIFIC ACTIVITY BR-80M AND I-123 LABELED 5-HALODEOXYURIDINES AND OTHER BR-80M COMPOUNDS FOR THE STUDY OF AUGER-ELECTRON TOXICITY SO JOURNAL OF LABELLED COMPOUNDS & RADIOPHARMACEUTICALS LA English DT Article DE AUGER ELECTRON; BR-80M; 123I; BROMOANTIPYRINE; 5-BROMO-2'-DEOXYURIDINE; 5-IODO-2'-DEOXYURIDINE ID URACIL DERIVATIVES; MAMMALIAN-CELLS; RADIOTOXICITY; BROMINATION; MECHANISMS; MOLECULES; THERAPY; DECAY AB Convenient preparations of Br-80m and I-123-labeled 5-halodeoxyuridines, required for basic investigations of Auger electron radiotoxicity, are described. These radioactive thymidine analogs were synthesized from deoxyuridine, radiohalide and N-chlorosuccinimide in dilute sulfuric acid. Yields were 50-60% for Br-80m and 60-70% for I-123. Apparent specific radioactivities (based on UV absorption under the radioactive HPLC peaks) were 150-550 Ci/mmol and over 2000 Ci/mmol for Br-80m and I-123, respectively. 5-[Br-80m]bromouracil was produced in 89% yield when uracil was used. [Br-80m]Bromoantipyrine was produced in higher yield and specific activity using peroxyacetic acid, rather than N-chlorosuccinimide as oxidant (90% and 4,000 Ci/mmol versus 50% and 2000 Ci/mmol). C1 ARGONNE NATL LAB,DEPT CHEM,ARGONNE,IL 60439. UNIV CHICAGO,DEPT RADIOL,CHICAGO,IL 60637. NR 33 TC 2 Z9 2 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0362-4803 J9 J LABELLED COMPD RAD JI J. Label. Compd. Radiopharm. PD APR PY 1991 VL 29 IS 4 BP 393 EP 403 DI 10.1002/jlcr.2580290405 PG 11 WC Biochemical Research Methods; Chemistry, Medicinal; Chemistry, Analytical SC Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Chemistry GA FH418 UT WOS:A1991FH41800003 ER PT J AU UNKEFER, CJ EHLER, DS AF UNKEFER, CJ EHLER, DS TI STEREOSELECTIVE SYNTHESIS OF L-[4-C-13]CARNITINE SO JOURNAL OF LABELLED COMPOUNDS & RADIOPHARMACEUTICALS LA English DT Article DE L-[4-C-13]CARNITINE; 3-DEOXY-D-RIBO-[1-C-13]HEXOSE; 3-DEOXY-D-[1-C-13]GLUCOSE; 3-DEOXY-D-ARABINO-[1-C-13]HEXOSE; 3-DEOXY-D-[1-C-13]MANNOSE ID COENZYME-A; CARNITINE; METABOLISM AB The stereoselective synthesis of L-[4-C-13]carnitine was achieved in 5 steps. The label was introduced from (KCM)-C-13 into an easily separated diastereomeric pair of 3-deoxy-D-[1-C-13]aldohexoses. Reductive amination of the labeled aldohexose yielded the corresponding D-1-(dimethylamino)[1-C-13]alditol which was oxidized in two steps and alkylated with iodomethane to yield L-[4-C-13]carnitine. The stereochemical integrity at C-2 of the 3-deoxy-D-[1-C-13]glucose precursor was maintained throughout the synthesis of L-[4-C-13]carnitine. RP UNKEFER, CJ (reprint author), LOS ALAMOS NATL LAB,NATL STABLE ISOTOPES RESOURCE,GRP INC4,MS C345,LOS ALAMOS,NM 87544, USA. NR 19 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0362-4803 J9 J LABELLED COMPD RAD JI J. Label. Compd. Radiopharm. PD APR PY 1991 VL 29 IS 4 BP 455 EP 461 DI 10.1002/jlcr.2580290410 PG 7 WC Biochemical Research Methods; Chemistry, Medicinal; Chemistry, Analytical SC Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Chemistry GA FH418 UT WOS:A1991FH41800008 ER PT J AU HEDRICK, DB GUCKERT, JB WHITE, DC AF HEDRICK, DB GUCKERT, JB WHITE, DC TI ARCHAEBACTERIAL ETHER LIPID DIVERSITY ANALYZED BY SUPERCRITICAL FLUID CHROMATOGRAPHY - INTEGRATION WITH A BACTERIAL LIPID PROTOCOL SO JOURNAL OF LIPID RESEARCH LA English DT Article DE METHANOGENS; THERMOACIDOPHILES; HALOPHILES; TAXONOMY; ECOLOGY ID COMMUNITY STRUCTURE; POLAR LIPIDS; METHANOBACTERIUM-THERMOAUTOTROPHICUM; METHANOGENIC ARCHAEBACTERIA; THERMOPLASMA-ACIDOPHILUM; NUTRITIONAL-STATUS; MICROBIAL BIOMASS; TETRAETHER LIPIDS; COMPLEX LIPIDS; SEDIMENTS AB A strategy has been developed for archaebacterial lipid analysis which provides three times the information to describe archaebacterial isolates and is compatible with simultaneous eubacterial/eukaryotic lipid analysis of environmental samples. Eubacterial and micro-eukaryotic biomass, community structure, and nutritional status have been routinely defined in environmental samples by lipid analysis. Lipid profiles are also useful in eubacterial identification and taxonomy. Polar lipid or whole cell ester-linked fatty acids are generally analyzed by gas chromatography-mass spectroscopy. Archaebacteria are characterized by their ether-linked membrane lipids. There is, however, less diversity in the side chains of archaebacterial membrane lipids as compared the eubacterial ester-linked membrane lipids. The information content of the archaebacterial lipid profile was increased by separately analyzing the polar lipid, glycolipid, and lipid-extracted residue fractions. Identification and quantification were performed by supercritical fluid chromatography. Results are presented for three species of methanogens and four thermoacidophile isolates, and compared with a literature review. C1 UNIV TENNESSEE,DEPT MICROBIOL,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. RP HEDRICK, DB (reprint author), UNIV TENNESSEE,INST APPL MICROBIOL,10515 RES DR,KNOXVILLE,TN 37932, USA. NR 47 TC 28 Z9 29 U1 0 U2 3 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 APR PY 1991 VL 32 IS 4 BP 659 EP 666 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA FJ004 UT WOS:A1991FJ00400012 PM 1906920 ER PT J AU FU, CL PAINTER, GS AF FU, CL PAINTER, GS TI 1ST PRINCIPLES INVESTIGATION OF HYDROGEN EMBRITTLEMENT IN FEAL SO JOURNAL OF MATERIALS RESEARCH LA English DT Article AB The mechanism underlying the hydrogen-induced embrittlement effect in FeAl has been investigated using a local density functional total-energy approach. The bonding characteristics, the bond and cleavage strength between iron and aluminum layers, and the surface energy with and without interstitially absorbed H are calculated from first-principles band-structure and atomic-cluster methods. Our unique combination of techniques permits the simultaneous study of the metallic and localized bonding effects on an equal footing. Results from this study show that FeAl (in the absence of H) is intrinsically highly resistant to cleavage fracture in terms of the high theoretical cleavage strength. Hydrogen locally dilates the Fe-Al lattice, and this is accompanied by a sizable decrease in Fe-Al cleavage (or cohesive) strength. Our results suggest that the underlying mechanism of H-embrittlement in aluminides is a depletion of d-bonding charge on the Fe site resulting from the charge transfer from Fe to H. Results also indicate that the H-embrittlement effect is greater for H adsorbed in Fe-rich sites. RP FU, CL (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831, USA. NR 10 TC 67 Z9 68 U1 1 U2 3 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 APR PY 1991 VL 6 IS 4 BP 719 EP 723 DI 10.1557/JMR.1991.0719 PG 5 WC Materials Science, Multidisciplinary SC Materials Science GA FF002 UT WOS:A1991FF00200008 ER PT J AU GUPTA, D EVANS, JW AF GUPTA, D EVANS, JW TI A MATHEMATICAL-MODEL FOR CHEMICAL VAPOR INFILTRATION WITH MICROWAVE-HEATING AND EXTERNAL COOLING SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID COMPOSITES; DIFFUSION; CVI AB A mathematical model has been used to compute temperature profiles in ceramic preforms that are heated by microwaves. The temperature profiles were then input to a second part of the model describing chemical vapor infiltration of the preform, that is the diffusion of gaseous reactants, heterogeneous reaction, and evolution of the pore structure. Equations were solved numerically for parameters corresponding to the infiltration of SiC preforms by pyrolysis of trichloromethylsilane. While based on some simplifications, the model leads to the conclusion that infiltration proceeds more rapidly, and to a greater extent, with microwave heating/external cooling than in isothermal infiltration. The model suggests that infiltration might be optimized by manipulation of microwave power and external cooling. The computed extent of infiltration is seen to be very sensitive to the initial pore size. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720. NR 28 TC 25 Z9 25 U1 0 U2 0 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 APR PY 1991 VL 6 IS 4 BP 810 EP 818 DI 10.1557/JMR.1991.0810 PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA FF002 UT WOS:A1991FF00200021 ER PT J AU MERK, N THOMAS, G AF MERK, N THOMAS, G TI STRUCTURE AND COMPOSITION CHARACTERIZATION OF SUBMICRONIC MULLITE WHISKERS SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID ELECTRON-MICROSCOPY AB Two sets of submicronic mullite whiskers, which have potential applications for fiber reinforced composites or as a thermal insulator, have been characterized to be tetragonal or orthorhombic using x-ray and electron microscopy techniques. The whiskers decompose upon heating under vacuum with a continuous loss of silicon and reduction in oxygen content up to the limit for which pure aluminum metal and alpha-alumina are formed. RP MERK, N (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,NATL CTR ELECTRON MICROSCOPY,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 29 TC 9 Z9 9 U1 0 U2 1 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 APR PY 1991 VL 6 IS 4 BP 825 EP 834 DI 10.1557/JMR.1991.0825 PG 10 WC Materials Science, Multidisciplinary SC Materials Science GA FF002 UT WOS:A1991FF00200023 ER PT J AU CHEN, CW AF CHEN, CW TI FABRICATION AND CHARACTERIZATION OF THIN-FILMS WITH PERPENDICULAR MAGNETIC-ANISOTROPY FOR HIGH-DENSITY MAGNETIC RECORDING .1. A REVIEW SO JOURNAL OF MATERIALS SCIENCE LA English DT Review ID CO-CR FILMS; ELECTROPLATED COBALT FILM; STRUCTURAL-PROPERTIES; VACUUM DEPOSITION; MICROSTRUCTURAL PROPERTIES; CRYSTAL ORIENTATION; SPUTTERED CHROMIUM; SUBSTRATE BIAS; ALLOY-FILMS; MEDIA AB Perpendicular magnetic anisotrophy (PMA) was first observed in thin films of cobalt-chromium alloys in 1974, and perpendicular magnetic recording was proposed in 1977. After less than ten years, a new technology for high-density magnetic recording is firmly established. This breakthrough of the science and technology of magnetic recording has been made possible mainly through the ingenuity and concerted efforts of researchers. The preparation, characterization, and application of the Co-Cr films featuring PMA have been extensively studied. This paper reviews the large number of reports on PMA films with emphasis on three areas: 1. processing of PMA films; 2. correlation of magnetic properties and microstructures of PMA films; and 3. state-of-art techniques for fabricating PMA films. RP CHEN, CW (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,LIVERMORE,CA 94550, USA. NR 151 TC 12 Z9 12 U1 2 U2 9 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 APR 1 PY 1991 VL 26 IS 7 BP 1705 EP 1728 DI 10.1007/BF00543593 PG 24 WC Materials Science, Multidisciplinary SC Materials Science GA FG081 UT WOS:A1991FG08100001 ER PT J AU RICHARDSON, TJ DEJONGHE, LC AF RICHARDSON, TJ DEJONGHE, LC TI TRAVELING SOLVENT ZONE TEXTURING OF CERAMIC SUPERCONDUCTOR THICK-FILMS SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article ID TRANSPORT CRITICAL CURRENT; YBA2CU3O7-X; MAGNETIZATION RP RICHARDSON, TJ (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 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 APR 1 PY 1991 VL 10 IS 7 BP 369 EP 370 DI 10.1007/BF00728034 PG 2 WC Materials Science, Multidisciplinary SC Materials Science GA FG080 UT WOS:A1991FG08000002 ER PT J AU SPITZIG, WA REED, LK KROTZ, PD AF SPITZIG, WA REED, LK KROTZ, PD TI DEFORMATION PROCESSING OF BONDED CU-15-PERCENT NB SHEETS SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article ID COMPOSITES; STRENGTH; MICROSTRUCTURE C1 ROCKWELL INT CORP,CANOGA PK,CA 91303. RP SPITZIG, WA (reprint author), IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011, USA. NR 10 TC 4 Z9 4 U1 0 U2 0 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 APR 1 PY 1991 VL 10 IS 7 BP 371 EP 373 DI 10.1007/BF00728035 PG 3 WC Materials Science, Multidisciplinary SC Materials Science GA FG080 UT WOS:A1991FG08000003 ER PT J AU ANTONIADIS, I MOTTOLA, E AF ANTONIADIS, I MOTTOLA, E TI GRAVITON FLUCTUATIONS IN DESITTER SPACE SO JOURNAL OF MATHEMATICAL PHYSICS LA English DT Article ID DE-SITTER SPACE; QUANTUM INSTABILITY; PROPAGATOR; STABILITY; FIELD AB The two-point correlation function of metric fluctuations in de Sitter space is calculated. The results are expressed in a gauge-invariant and O(4,1)-invariant form in terms of elementary functions of z(x,x') (a biscalar variable simply related to the invariant distance between x and x'). The Feynman functions for the transverse, trace-free, and scalar metric fluctuations grow without bounds, as ln z and z ln z, respectively, for large z. The consequences of this bad infrared behavior are discussed and it is shown that it leads to divergences in physical quantities at both the classical and quantum levels. C1 INST THEORET PHYS,SANTA BARBARA,CA 93106. UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET T8,LOS ALAMOS,NM 87545. RP ANTONIADIS, I (reprint author), ECOLE POLYTECH,CTR PHYS THEOR,F-91128 PALAISEAU,FRANCE. NR 19 TC 98 Z9 99 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0022-2488 J9 J MATH PHYS JI J. Math. Phys. PD APR PY 1991 VL 32 IS 4 BP 1037 EP 1044 DI 10.1063/1.529381 PG 8 WC Physics, Mathematical SC Physics GA FD896 UT WOS:A1991FD89600030 ER PT J AU HEDRICK, DB NIVENS, DE STAFFORD, C WHITE, DC AF HEDRICK, DB NIVENS, DE STAFFORD, C WHITE, DC TI RAPID DIFFERENTIATION OF ARCHAEBACTERIA FROM EUBACTERIA BY DIFFUSE REFLECTANCE FOURIER-TRANSFORM IR SPECTROSCOPIC ANALYSIS OF LIPID PREPARATIONS SO JOURNAL OF MICROBIOLOGICAL METHODS LA English DT Article DE ARCHAEBACTERIUM; BIOTECHNOLOGY; EUBACTERIUM; FOURIER-TRANSFORM IR SPECTROSCOPY; LIPID ANALYSIS ID METHANOGENIC ARCHAEBACTERIA; POLAR LIPIDS; BACTERIA AB A rapid method has been developed to distinguish pure cultures of archaebacteria from eubacteria. The strong acid methanolyzate of the total lipid extract was prepared by a simplified two-step process, and the diffuse reflectance Fourier-transform IR spectrum recorded. The height of the ester peak, expressed as a percent of the methyl peak, was chosen to distinguish the two kingdoms. The method was developed using four species of eubacteria and three species of archaebacteria, and then tested on another species of each. Minimum sample size for reliable results was 1 mg dry wt cells. C1 UNIV TENNESSEE,DEPT MICROBIOL,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN. RP HEDRICK, DB (reprint author), INST APPL MICROBIOL,10515 RES DR,KNOXVILLE,TN 37932, USA. NR 19 TC 19 Z9 19 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-7012 J9 J MICROBIOL METH JI J. Microbiol. Methods PD APR PY 1991 VL 13 IS 1 BP 67 EP 73 DI 10.1016/0167-7012(91)90033-M PG 7 WC Biochemical Research Methods; Microbiology SC Biochemistry & Molecular Biology; Microbiology GA FM534 UT WOS:A1991FM53400008 ER PT J AU CARLSON, ES MERCER, JC AF CARLSON, ES MERCER, JC TI DEVONIAN SHALE GAS-PRODUCTION - MECHANISMS AND SIMPLE-MODELS SO JOURNAL OF PETROLEUM TECHNOLOGY LA English DT Article AB We show that, even without consideration of their special storage and flow properties, Devonian shales are special cases of dual porosity. We also show that, while neglecting these properties in the short term is appropriate, such neglect in the long term will result in an underestimation of production. C1 MORGANTOWN ENERGY TECHNOL CTR,EXTRACT TECHNOL SIMULAT SECT,MORGANTOWN,WV. RP CARLSON, ES (reprint author), UNIV ALABAMA,MINERAL ENGN,BIRMINGHAM,AL 35294, USA. NR 18 TC 24 Z9 31 U1 1 U2 5 PU SOC PETROLEUM ENG PI RICHARDSON PA 222 PALISADES CREEK DR, RICHARDSON, TX 75080 SN 0149-2136 J9 J PETROL TECHNOL JI J. Pet. Technol. PD APR PY 1991 VL 43 IS 4 BP 476 EP 482 PG 7 WC Energy & Fuels; Engineering, Chemical; Engineering, Petroleum; Geosciences, Multidisciplinary SC Energy & Fuels; Engineering; Geology GA FF961 UT WOS:A1991FF96100015 ER PT J AU FULTON, BR BENNETT, SJ FREER, M MURGATROYD, JT ALLCOCK, SC RAE, WDM SMITH, AE BETTS, RR BACK, BB SANDERS, S VIDEBAEK, F AF FULTON, BR BENNETT, SJ FREER, M MURGATROYD, JT ALLCOCK, SC RAE, WDM SMITH, AE BETTS, RR BACK, BB SANDERS, S VIDEBAEK, F TI SEARCH FOR LARGE CLUSTER BREAKUP OF CA-40 SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS LA English DT Article ID INELASTIC-SCATTERING; MG-24; EXCITATION; RESONANCES; FISSION; DECAY AB A search has been performed for large cluster breakup from Ca-40 following inelastic scattering. No evidence is seen for breakup to the C-12 + Si-28, O-16 + Mg-24 or Ne-20 + Ne-20 channels. C1 UNIV OXFORD,DEPT NUCL PHYS,OXFORD OX1 3RH,ENGLAND. ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. RP FULTON, BR (reprint author), UNIV BIRMINGHAM,DEPT PHYS,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. RI Freer, Martin/F-9379-2013 NR 10 TC 2 Z9 2 U1 0 U2 0 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 APR PY 1991 VL 17 IS 4 BP 555 EP 559 DI 10.1088/0954-3899/17/4/014 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FG477 UT WOS:A1991FG47700014 ER PT J AU BERK, KN PICARD, RR AF BERK, KN PICARD, RR TI SIGNIFICANCE TESTS FOR SATURATED ORTHOGONAL ARRAYS SO JOURNAL OF QUALITY TECHNOLOGY LA English DT Article DE DATA ANALYSIS; FRACTIONAL FACTORIALS; HALF-NORMAL PLOTS; POOLING; TAGUCHI ID FACTORIALS; NORMALITY; VALUES AB Experimental designs used in industry often allow no degrees of freedom for the estimation of error. Nevertheless, analysis of variance results can (if used properly) be used to determine which factors are significant. We give a back-of-the-envelope calculation for making this determination, intended for practitioners desiring a convenient, anova-based analysis. Power comparisons show that competing methods, regardless of computational complexity, have remarkably similar operating characteristics. C1 UNIV CALIF LOS ALAMOS SCI LAB,STAT GRP,LOS ALAMOS,NM 87545. RP BERK, KN (reprint author), ILLINOIS STATE UNIV,MATH,NORMAL,IL 61761, USA. NR 25 TC 30 Z9 35 U1 1 U2 1 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0022-4065 J9 J QUAL TECHNOL JI J. Qual. Technol. PD APR PY 1991 VL 23 IS 2 BP 79 EP 89 PG 11 WC Engineering, Industrial; Operations Research & Management Science; Statistics & Probability SC Engineering; Operations Research & Management Science; Mathematics GA FD768 UT WOS:A1991FD76800001 ER PT J AU PIEPEL, GF AF PIEPEL, GF TI SCREENING DESIGNS FOR CONSTRAINED MIXTURE EXPERIMENTS DERIVED FROM CLASSICAL SCREENING DESIGNS - AN ADDENDUM SO JOURNAL OF QUALITY TECHNOLOGY LA English DT Article DE FRACTIONAL FACTORIAL DESIGN; OPTIMAL EXPERIMENTAL DESIGN; PLACKETT-BURMAN DESIGN; XVERT ALGORITHM AB This paper is an addendum to a previous paper of mine, which discussed modified XVERT mixture screening designs (MXMSDs) for mixture constraint regions defined by lower and upper bounds on the component proportions. MXMSDs consist of a center point and a subset of the extreme vertices derived from a classical two-level screening design (e.g., Plackett-Burman or fractional factorial) using a modified XVERT algorithm. The previous paper showed that the properties of MXMSDs can be nearly as good as or equal to the properties of designs in which the subset of extreme vertices is selected using optimal experimental design software. In this addendum, it is shown that the properties of MXMSDs can also be considerably worse than those of optimal designs for some mixture constraint regions. Simple functions of the component lower and upper bounds provide a basis for determining whether or not MXMSDs will have properties close to those of optimal experimental designs. Two versions of a nine-component herbicide example are used to illustrate the discussion. RP PIEPEL, GF (reprint author), PACIFIC NW LAB, DEPT COMPUTAT SCI, K1-86,POB 999, RICHLAND, WA 99352 USA. NR 7 TC 1 Z9 1 U1 0 U2 1 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0022-4065 J9 J QUAL TECHNOL JI J. Qual. Technol. PD APR PY 1991 VL 23 IS 2 BP 96 EP 101 PG 6 WC Engineering, Industrial; Operations Research & Management Science; Statistics & Probability SC Engineering; Operations Research & Management Science; Mathematics GA FD768 UT WOS:A1991FD76800003 ER PT J AU EDER, DC SCOTT, HA AF EDER, DC SCOTT, HA TI THE CALCULATION OF LINE TRANSFER IN EXPANDING MEDIA SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article ID LASER AB An efficient method for calculating 1-D line transfer that allows bulk-Doppler motion is described. The method uses a ray-based integral formalism combined with complete linearization. The calculations of line transfer in planar, spherical, and cylindrical geometries are compared. If there are steep velocity gradients in the medium, simplification is possible and escape probabilities provide accurate results. Results using local escape probabilities in an expanding cylindrical medium are compared with those from a nonlocal line-transfer calculation. It is shown that the accuracy of the escape-probability treatment for a given transition can be affected by coupling with neighboring lines via bulk-Doppler motions. RP EDER, DC (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 17 TC 34 Z9 35 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD APR PY 1991 VL 45 IS 4 BP 189 EP 204 DI 10.1016/0022-4073(91)90053-S PG 16 WC Optics; Spectroscopy SC Optics; Spectroscopy GA FA957 UT WOS:A1991FA95700001 ER PT J AU GANGULI, AK SUBRAMANIAN, MA KWEI, GH AF GANGULI, AK SUBRAMANIAN, MA KWEI, GH TI OXIDES OF THE TYPE TLSR2CU1-XFEXO5, TLSR2CU1-XCOXO5 HAVING THE 121 STRUCTURE SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Letter ID HIGH-TEMPERATURE SUPERCONDUCTORS; CUPRATE SUPERCONDUCTORS; FAMILY; THALLIUM C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. RP GANGULI, AK (reprint author), DUPONT CO,DEPT CENT RES & DEV,EXPTL STN,WILMINGTON,DE 19880, USA. NR 23 TC 5 Z9 5 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD APR PY 1991 VL 91 IS 2 BP 397 EP 402 DI 10.1016/0022-4596(91)90097-2 PG 6 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA FD926 UT WOS:A1991FD92600024 ER PT J AU RAI, D FELMY, AR SZELMECZKA, RW AF RAI, D FELMY, AR SZELMECZKA, RW TI HYDROLYSIS CONSTANTS AND ION-INTERACTION PARAMETERS FOR CD(II) IN ZERO TO HIGH-CONCENTRATIONS OF NAOH-KOH, AND THE SOLUBILITY PRODUCT OF CRYSTALLINE CD(OH)2 SO JOURNAL OF SOLUTION CHEMISTRY LA English DT Article DE SOLUBILITY; EQUILIBRIUM CONSTANTS; ACTIVITY COEFFICIENT; HYDROLYSIS; BETA-CD(OH)2(C); ION-INTERACTION PARAMETERS; CADMIUM ID NATURAL-WATERS; THERMODYNAMICS; ELECTROLYTES; PREDICTION AB The solubility of Cd(OH)2(c) was studied in 0.01M NaClO4 solutions, from both the over- and the undersaturation directions, with OH- ion concentration ranging from 10(-6) to 1.0 mol-L-1, and the equilibration period ranging from 2 to 28 days. Equilibrium Cd concentrations were reached in less than 2 days. The Cd(OH)2(c) solubility showed an amphoteric behavior. In the entire range of OH-/H+ investigated, the only dominant aqueous Cd(II) species required to explain the solubility of Cd(OH)2(c) are Cd2+, Cd(OH)2(0) and Cd(OH)4(2-). The logarithms of the thermodynamic equilibrium constants of the Cd(OH)2(c) solubility reactions involving these species, that is, the reactions Cd(OH)2(c) reversible Cd2+ + 2OH-, Cd(OH)2(c) reversible Cd(OH)2(0), and Cd(OH)2(c) + 2OH- reversible Cd(OH)4(2-) were found to be -14.14 +/- 0.21, -7.04 +/- 0.21, and -5.62 +/- 0.32, respectively. The ion-interaction parameters reported in the literature, in conjunction with the values for Cd(OH)2(0) - Na+ (-0.20), Cd(OH)4(2-) - Na+ (beta-0 = 0.41, beta-1 = 0.7), and Cd(OH)4(2-) - K+ (beta-0 = 0.44, beta-1 = 1.44) obtained in this study, show that our low-ionic strength solubility data are also consistent with Cd(OH)2(c) solubility data obtained in solutions as concentrated as 10M in NaOH or KOH and 7M in Na(OH,ClO4). RP RAI, D (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 24 TC 19 Z9 19 U1 0 U2 5 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0095-9782 J9 J SOLUTION CHEM JI J. Solut. Chem. PD APR PY 1991 VL 20 IS 4 BP 375 EP 390 DI 10.1007/BF00650764 PG 16 WC Chemistry, Physical SC Chemistry GA FE956 UT WOS:A1991FE95600002 ER PT J AU WOLSKY, AM DANIELS, EJ JODY, BJ AF WOLSKY, AM DANIELS, EJ JODY, BJ TI RECOVERING CO2 FROM LARGE-SIZE AND MEDIUM-SIZE STATIONARY COMBUSTORS SO JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION LA English DT Article AB This paper summarizes the results of research conducted at Argonne National Laboratory (ANL) to develop and design a novel method for the recovery of CO2 from flue gases. The basic process concept involves the combustion of a hydrocarbon fuel using a mixture of oxygen and carbon dioxide (or CO2 and H2O) rather than air as the oxidant, which results in a product stream that contains primarily CO2 and H2O. This stream is then dried and conditioned to meet the specifications of the end user. A slip stream of CO2 (or CO2 and H2O) is used as a diluent in the combustion chamber to maintain a flame temperature equivalent to the temperature that would otherwise be obtained using air as an oxidant. The cost-effectiveness of the process in recovering CO2 is dependent on the scale of the operation, the type of fuel used, the cost of oxygen, and the cost of capital. The sensitivity of the cost of the recovered CO2 to these variables is discussed, and a model for estimating the cost of CO2 recovered using the ANL process is presented. RP WOLSKY, AM (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 0 TC 14 Z9 18 U1 0 U2 1 PU AIR & WASTE MANAGEMENT ASSOC PI PITTSBURGH PA PO BOX 2861, PITTSBURGH, PA 15230 SN 1047-3289 J9 J AIR WASTE MANAGE JI J. Air Waste Manage. Assoc. PD APR PY 1991 VL 41 IS 4 BP 449 EP 454 PG 6 WC Engineering, Environmental; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA FH760 UT WOS:A1991FH76000010 ER PT J AU MARRA, JE PEACOCK, HB AF MARRA, JE PEACOCK, HB TI REACTIONS DURING THE PROCESSING OF U3O8-AL CERMET FUELS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article DE CERMETS; URANIUM OXIDE; NUCLEAR MATERIALS; ALUMINUM; THERMODYNAMICS AB The cerment fuel (U3O8 dispersed in Al) being considered for use in the Savannah River Site Reactors is thermodynamically unstable because of the potential for an exothermic metallothermic reduction reaction. This paper describes work performed to quantify the extent of reaction during powder metallurgy (P/M) processing of the U3O8-Al cerment fuel, and to determine the effect of partial reduction to U4O9 on the metallothermic reduction reaction. During the fabrication of the U3O8-Al cermet fuel by the P/M technique, a significant portion of the U3O8 is reduced to U4O9. The reaction between U4O9 and Al is also exothermic; however, the maximum heat released by the reaction is substantially less than that released for the U3O8-Al reaction, approximately 335 J (80 cal) per gram of oxide reacted compared to 940 J (225 cal). Metallothermic reduction reactions for U3O8/U4O9/Al mixtures do not occur at the normal reactor operating temperature, approximately 370 K (approximately 100-degrees-C) or at temperatures below the melting point of aluminum, 930 K (660-degrees-C). RP MARRA, JE (reprint author), WESTINGHOUSE SAVANNAH RIVER CO,SAVANNAH RIVER LAB,AIKEN,SC 29808, USA. NR 10 TC 0 Z9 0 U1 2 U2 3 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD APR PY 1991 VL 74 IS 4 BP 733 EP 738 DI 10.1111/j.1151-2916.1991.tb06917.x PG 6 WC Materials Science, Ceramics SC Materials Science GA FF810 UT WOS:A1991FF81000007 ER PT J AU BAMBERGER, CE MACDOUGALL, CS BEGUN, GM HATMAKER, TL AF BAMBERGER, CE MACDOUGALL, CS BEGUN, GM HATMAKER, TL TI SYNTHESIS OF SOLID PHOSPHATE-COMPOUNDS OF TI(III) AND TI(IV) SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article DE TITANIUM; PHOSPHATES; SYNTHESIS; COLOR; X-RAY DIFFRACTION ID SPECTRA AB Several new methods for the synthesis of TiPO4 are described. Crystalline phosphate compounds containing boron and titanium in a single III or mixed (III, IV) oxidation states have been synthesized and identified by X-ray diffraction. An additional family of phosphate compounds containing only Ti(III, IV) has also been synthesized and identified. All the compounds exhibit attractive colors, e.g., bright green, blue, purple, and black, and are stable at room temperature in air and in boiling water. C1 APPL TECHNOL ORG,OAK RIDGE,TN 37831. RP BAMBERGER, CE (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 11 TC 2 Z9 2 U1 2 U2 15 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD APR PY 1991 VL 74 IS 4 BP 837 EP 841 DI 10.1111/j.1151-2916.1991.tb06934.x PG 5 WC Materials Science, Ceramics SC Materials Science GA FF810 UT WOS:A1991FF81000024 ER PT J AU JOHNSON, DL AF JOHNSON, DL TI MICROWAVE-HEATING OF GRAIN-BOUNDARIES IN CERAMICS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Note DE MICROWAVES; GRAIN BOUNDARIES; HEATING; MODELING; SINTERING AB It has been suggested that enhanced sintering of ceramics by microwave heating may be the result of accelerated grain-boundary diffusion caused by the grain boundaries being heated to temperatures significantly greater than the bulk-specimen temperature. Heat flow calculations show that the temperature difference between the grain boundary and grain interior will be a small fraction of a degree, even under extreme conditions. C1 NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60208. RP JOHNSON, DL (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 5 TC 43 Z9 44 U1 0 U2 4 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD APR PY 1991 VL 74 IS 4 BP 849 EP 850 DI 10.1111/j.1151-2916.1991.tb06937.x PG 2 WC Materials Science, Ceramics SC Materials Science GA FF810 UT WOS:A1991FF81000027 ER PT J AU RUSSELL, LM DONALDSON, KY HASSELMAN, DPH CORBIN, ND PETROVIC, JJ RHODES, JF AF RUSSELL, LM DONALDSON, KY HASSELMAN, DPH CORBIN, ND PETROVIC, JJ RHODES, JF TI EFFECT OF VAPOR LIQUID SOLID AND VAPOR SOLID SILICON-CARBIDE WHISKERS ON THE EFFECTIVE THERMAL-DIFFUSIVITY CONDUCTIVITY OF SILICON-NITRIDE MATRIX COMPOSITES SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Note DE SILICON CARBIDE; WHISKERS; SILICON NITRIDE; THERMAL DIFFUSIVITY; THERMAL CONDUCTIVITY ID MICROSTRUCTURE; FIBERS; GROWTH AB A study was conducted of the relative effect of vapor-liquid-solid (VLS) and vapor-solid (VS) SiC whiskers on the effective thermal diffusivity and conductivity of pressed-densified silicon nitride. It was found that VLS whiskers cause an increase in the thermal diffusivity/conductivity, whereas the opposite effect was found for the VS-SiC whiskers. Comparison with composite theory suggests that the VS-SiC whiskers have a thermal conductivity as low as 25 to 30 W/(m.K). In contrast the VLS-SiC whiskers appear to have a value for the thermal conductivity of at least about 100 W/(m.K) to as high as 250 W/(m.K). These large differences in thermal conductivity for these two types of SiC whiskers are attributed to the much larger density of structural defects in the VS-SiC whiskers, which act as phonon scatterers, thereby lowering the thermal conductivity. C1 NORTON CO,NORTHBOROUGH,MA 01532. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. ADV COMPOSITE MAT CORP,GREER,SC 29651. RP RUSSELL, LM (reprint author), VIRGINIA POLYTECH INST & STATE UNIV,DEPT MAT ENGN,BLACKSBURG,VA 24061, USA. NR 19 TC 7 Z9 8 U1 0 U2 1 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD APR PY 1991 VL 74 IS 4 BP 874 EP 877 DI 10.1111/j.1151-2916.1991.tb06945.x PG 4 WC Materials Science, Ceramics SC Materials Science GA FF810 UT WOS:A1991FF81000035 ER PT J AU LI, Z GHOSH, A KOBAYASHI, AS BRADT, RC AF LI, Z GHOSH, A KOBAYASHI, AS BRADT, RC TI INDENTATION FRACTURE-TOUGHNESS OF SINTERED SILICON-CARBIDE IN THE PALMQVIST CRACK REGIME - REPLY SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Note ID CERAMICS C1 UNIV WASHINGTON,DEPT MECH ENGN,SEATTLE,WA 98195. UNIV NEVADA,MACKAY SCH MINES,RENO,NV 89557. PHILLIPS DISPLAY COMPONENTS,ANN ARBOR,MI 48106. RP LI, Z (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 7 TC 4 Z9 4 U1 3 U2 5 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD APR PY 1991 VL 74 IS 4 BP 889 EP 890 DI 10.1111/j.1151-2916.1991.tb06950.x PG 2 WC Materials Science, Ceramics SC Materials Science GA FF810 UT WOS:A1991FF81000040 ER PT J AU KELLEY, DG ESPENSON, JH BAKAC, A AF KELLEY, DG ESPENSON, JH BAKAC, A TI COLLIGATION REACTIONS BETWEEN A NICKEL(II) MACROCYCLE AND ALKYL RADICALS SO JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS LA English DT Article ID AQUEOUS-SOLUTION; HOMOLYSIS; KINETICS; BOND; ACIDOLYSIS; COMPLEXES AB The bimolecular reaction between RRSS-NiL2+ (where L = 1,4,8,11-tetraazacyclotetradecane) and alkyl radicals (R.) forms the organometallic species RNiL(H2O)2+, with rate constants that vary in the order Me >> primary >> secondary in aqueous perchloric acid at 25-degrees-C, reflecting the decreasing strength of the nickel-carbon bond. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 15 TC 2 Z9 2 U1 0 U2 0 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF SN 0022-4936 J9 J CHEM SOC CHEM COMM JI J. Chem. Soc.-Chem. Commun. PD APR 1 PY 1991 IS 7 BP 546 EP 547 DI 10.1039/c39910000546 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA FH115 UT WOS:A1991FH11500054 ER PT J AU NAGY, Z HAWKINS, RE AF NAGY, Z HAWKINS, RE TI EFFECT OF DOUBLE-LAYER STRUCTURE ON THE DETERMINATION OF CORROSION RATES FROM ELECTROCHEMICAL MEASUREMENTS SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Note ID ORGANIC SUBSTANCES; ZERO CHARGE; POTENTIALS; ADSORPTION; METALS; WATER AB The generally used polarization equation that forms the basis for the calculation of corrosion rates from electrochemical measurements completely neglects the effect of the double-layer structure on the kinetics of electrochemical reactions. Recently, Nagy and Schultz (1) carried out theoretical calculations to define the conditions for which the double-layer effect can be safely ignored in practical corrosion measurements using a simple model of the double layer. In this paper, we report similar calculations using a more realistic double-layer model. C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. RP NAGY, Z (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 13 TC 2 Z9 2 U1 0 U2 1 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 APR PY 1991 VL 138 IS 4 BP 1047 EP 1050 DI 10.1149/1.2085713 PG 4 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA FF270 UT WOS:A1991FF27000028 ER PT J AU PARK, K OLANDER, DR AF PARK, K OLANDER, DR TI OXYGEN DIFFUSION IN SINGLE-CRYSTAL TETRAGONAL ZIRCONIA SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID HIGH-TEMPERATURE AB The gas-solid isotope exchange method using H2O-18 with the continuously recording gravimetric technique was employed for the measurement of the oxygen tracer diffusion coefficient in single-crystal zirconia. In the temperature range investigated (1300-1600-degrees-C) the tetragonal form of the oxide is stable. Both helium and hydrogen atmospheres were used, the latter to determine the effect of hydrogen on oxygen mobility in the solid. Oxygen diffusion was found to be strongly dependent on trivalent impurities in the oxide. The oxygen vacancy diffusivity was determined from tracer diffusivity measurements in specimens of different impurity levels. Chemical diffusion coefficients were also determined from the tracer diffusivities and compared with values obtained from corrosion rate data. C1 UNIV CALIF BERKELEY,DEPT NUCL ENGN,BERKELEY,CA 94720. RP PARK, K (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. NR 31 TC 32 Z9 32 U1 1 U2 11 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 APR PY 1991 VL 138 IS 4 BP 1154 EP 1159 DI 10.1149/1.2085733 PG 6 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA FF270 UT WOS:A1991FF27000048 ER PT J AU JENNISON, BK ALLEBACH, JP SWEENEY, DW AF JENNISON, BK ALLEBACH, JP SWEENEY, DW TI EFFICIENT DESIGN OF DIRECT-BINARY-SEARCH COMPUTER-GENERATED HOLOGRAMS SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID DIGITAL HOLOGRAMS; ERROR AB Computer-generated holograms (CGH's) synthesized by the iterative direct-binary-search (DBS) algorithm yield lower reconstruction error and higher diffraction efficiency than do CGH's designed by conventional methods, but the DBS algorithm is computationally intensive. A fast algorithm for DBS is developed that recursively computes the error measure to be minimized. For complex amplitude-based error, the required computation for an L-point CGH is reduced by a factor of (L/log2L)1/2. The fast intensity-based algorithm is substantially more complicated, and modifications are considered in order to make the algorithm more efficient. An acceleration technique that attempts to increase the rate of convergence of the DBS algorithm is also investigated. C1 PURDUE UNIV,SCH ELECT ENGN,W LAFAYETTE,IN 47907. SANDIA NATL LABS,LIVERMORE,CA 94550. NR 11 TC 42 Z9 42 U1 3 U2 8 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD APR PY 1991 VL 8 IS 4 BP 652 EP 660 DI 10.1364/JOSAA.8.000652 PG 9 WC Optics SC Optics GA FE971 UT WOS:A1991FE97100008 ER PT J AU PAYNE, SA CAIRD, JA CHASE, LL SMITH, LK NIELSEN, ND KRUPKE, WF AF PAYNE, SA CAIRD, JA CHASE, LL SMITH, LK NIELSEN, ND KRUPKE, WF TI SPECTROSCOPY AND GAIN MEASUREMENTS OF ND3+ IN SRF2 AND OTHER FLUORITE-STRUCTURE HOSTS SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID ALKALINE-EARTH FLUORIDES; ANION-EXCESS FLUORITES; SOLID-STATE LASERS; DIODE-LASER; STIMULATED-EMISSION; DEFECT AGGREGATION; CALCIUM-FLUORIDE; SPACE CHARGES; ION-TRANSPORT; ND-3+ IONS AB We investigate the optical properties of Nd3+ in CaF2, SrF2, and BaF2 with the intent of determining whether any of these materials might usefully serve as a laser-pumped-amplifier medium. The Nd3+ impurities tend to cluster at low levels of doping in CaF2, leading to the formation of nonluminescent centers. The addition of La or Y buffer ions to CaF2:Nd serves to increase the luminescent yield, but it also renders the system spectrally inhomogeneous. Although single-ion centers predominate in BaF2, the interstitial fluoride compensator occurs at the next-nearest-neighbor position relative to Nd3+, leading to unsuitably low transition strengths. The interstitial fluoride occurs at the nearest-neighbor site of Nd3+ in SrF2 and thereby induces significant oscillator strength into the 4f-4f transitions by breaking the inversion symmetry. The radiative lifetime of SrF2:Nd is found to be 1470-mu-sec by measuring the emission lifetime and quantum efficiency; this value was confirmed by Judd-Ofelt analysis of the absorption features. The peak-emission cross section at room temperature was determined to be 1.7 x 10(-20) cm2 at 1036.5 nm. A maximum of 0.20 at. % Nd3+ may be doped into SrF2 without the occurrence of significant Nd clustering. Direct measurements of the gain spectrum in SrF2:Nd reveal the presence of the 4F3/2 --> 2G9/2 excited-state absorption, although its effect on the emission cross section is only minor. RP PAYNE, SA (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 78 TC 71 Z9 72 U1 1 U2 22 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 APR PY 1991 VL 8 IS 4 BP 726 EP 740 DI 10.1364/JOSAB.8.000726 PG 15 WC Optics SC Optics GA FF433 UT WOS:A1991FF43300003 ER PT J AU GEORGES, AT DIXIT, SN AF GEORGES, AT DIXIT, SN TI DEPENDENCE OF BROAD-BAND RAMAN AMPLIFICATION IN DISPERSIVE MEDIA ON THE PUMP STOKES INPUT CORRELATION SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID STIMULATED-BRILLOUIN-SCATTERING; GAIN ENHANCEMENT; LASER; AMPLIFIERS; GENERATION AB A statistical theory is presented of the dependence of Raman amplification in a dispersive medium on the cross correlation of the pump and the Stokes input. Both forward and backward amplification of broadband Stokes radiation by a broadband pump are considered. It is shown that group-velocity dispersion reduces the gain enhancement that is observed when the pump and the Stokes input are correlated. The curve for the gain enhancement versus the relative time delay (advance) of the two waves becomes asymmetric and broader than it would in the absence of dispersion. For typical parameters the lack of perfect correlation between the Stokes output from a Raman generator and the pump reduces the gain enhancement in a cascaded Raman amplifier by only a few percent. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP GEORGES, AT (reprint author), UNIV CRETE,DEPT PHYS,HERAKLION,GREECE. NR 15 TC 5 Z9 5 U1 0 U2 3 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 APR PY 1991 VL 8 IS 4 BP 780 EP 785 DI 10.1364/JOSAB.8.000780 PG 6 WC Optics SC Optics GA FF433 UT WOS:A1991FF43300010 ER PT J AU SHORE, BW MEYSTRE, P STENHOLM, S AF SHORE, BW MEYSTRE, P STENHOLM, S TI IS A QUANTUM STANDING WAVE COMPOSED OF 2 TRAVELING WAVES SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID ATOMIC-BEAM; LIGHT-WAVE; DEFLECTION; DIFFRACTION; FIELD; INTERFERENCE; RADIATION AB We compare the scattering of an atom by two different quantized standing-wave configurations. The first one is established in a cavity by a pair of fixed mirrors. The other consists of two independent counterpropagating traveling waves, as could occur in a ring configuration. We show that in the quantum regime (of small photon numbers) atoms are scattered differently by a true standing wave than by a superposition of two counterpropagating waves of equal amplitudes and opposite directions. This behavior is a manifestation of momentum conservation. In the case of traveling waves each wave depletes its momentum independently, whereas the standing wave that is fixed in space acts as a potentially infinite sink or source for momentum. C1 UNIV HELSINKI,THEORET PHYS RES INST,SF-00170 HELSINKI 17,FINLAND. UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721. UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721. RP SHORE, BW (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,THEORET ATOM & MOLEC PHYS GRP,LIVERMORE,CA 94550, USA. NR 23 TC 34 Z9 34 U1 0 U2 3 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 APR PY 1991 VL 8 IS 4 BP 903 EP 910 DI 10.1364/JOSAB.8.000903 PG 8 WC Optics SC Optics GA FF433 UT WOS:A1991FF43300024 ER PT J AU BATEMAN, VI CARNE, TG GREGORY, DL ATTAWAY, SW YOSHIMURA, HR AF BATEMAN, VI CARNE, TG GREGORY, DL ATTAWAY, SW YOSHIMURA, HR TI FORCE RECONSTRUCTION FOR IMPACT TESTS SO JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME LA English DT Article AB Two force reconstruction techniques were used to evaluate the impact test of a scale model nuclear transportation cask dropped 30 ft. onto an unyielding target. The two techniques are: the sum of weighted acceleration technique (SWAT) and the deconvolution technique (DECON). A brief description and the calibration of the techniques as applied to the cask are presented. For the impact test, both techniques yielded very similar resultant forces and provided more accurate definition of the force-time history for the cask than is available from conventional data reduction methods. An applied moment, measurement previously unobtainable from conventional accelerometer data reduction techniques, was determined with SWAT. The angular velocity calculated with SWAT was verified with photometric measurements. RP BATEMAN, VI (reprint author), SANDIA NATL LABS,DEPT TRANSPORTAT SYST DEV,ALBUQUERQUE,NM 87185, USA. NR 0 TC 16 Z9 16 U1 0 U2 4 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1048-9002 J9 J VIB ACOUST JI J. Vib. Acoust.-Trans. ASME PD APR PY 1991 VL 113 IS 2 BP 192 EP 200 DI 10.1115/1.2930169 PG 9 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA HP728 UT WOS:A1991HP72800008 ER PT J AU MCCORQUODALE, SM AF MCCORQUODALE, SM TI ENERGETIC CONSIDERATIONS AND HABITAT QUALITY FOR ELK IN ARID GRASSLANDS AND CONIFEROUS FORESTS SO JOURNAL OF WILDLIFE MANAGEMENT LA English DT Article ID WHITE-TAILED DEER; SHOOT PRODUCTION; SHRUB-STEPPE; MULE DEER; DIETS; WASHINGTON; POPULATION; COLORADO AB I used static modeling to explore the recent success of elk (Cervus elaphus) colonizing the arid shrub-steppe of Washington. Forage-based estimates of metabolizable energy available to elk in the shrub-steppe were compared to energy available in 2 mesic forest communities that historically have served as more typical summer elk habitat. Although precipitation and primary productivity were substantially lower in the shrub-steppe, the estimated calories available in shrub-steppe forage over a 300-km2 area were 271 and 86%, respectively, of lodgepole pine (Pinus contorta) and cedar-hemlock (Thuja-Tsuga) forests of similar size. Low intercommunity variability in forage production, lack of a significant nonforage overstory, and the large size and relative abundance of foraging areas in the shrub-steppe mitigated reduced primary production. In the shrub-steppe, 92% of the habitat represented potential foraging habitat as determined by minimum forage biomass, whereas only 10 and 40% of the forested habitats, respectively, could be considered prime foraging areas. Whereas forage energy was concentrated in openings within conifer forests, it was more uniformly dispersed over the habitat mosaic in the shrub-steppe. These results provide a bioenergetic frame-work for understanding the recent success of elk colonizing the arid shrub-steppe of Washington and are consistent with observed patterns of movement and habitat use for elk in shrub-steppe habitat. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 31 TC 21 Z9 21 U1 0 U2 0 PU WILDLIFE SOC PI BETHESDA PA 5410 GROSVENOR LANE, BETHESDA, MD 20814-2197 SN 0022-541X J9 J WILDLIFE MANAGE JI J. Wildl. Manage. PD APR PY 1991 VL 55 IS 2 BP 237 EP 242 DI 10.2307/3809145 PG 6 WC Ecology; Zoology SC Environmental Sciences & Ecology; Zoology GA FL596 UT WOS:A1991FL59600005 ER PT J AU MALAGA, CA WELLER, RE BUSCHBOM, RL RAGAN, HA AF MALAGA, CA WELLER, RE BUSCHBOM, RL RAGAN, HA TI SERUM CHEMISTRY OF THE WILD CAUGHT KARYOTYPE-I NIGHT MONKEY (AOTUS-NANCYMAI) SO LABORATORY ANIMAL SCIENCE LA English DT Article ID OWL MONKEY; TRIVIRGATUS; PLASMODIUM AB Serum samples from 254 wild-caught Aotus nancymai were analyzed to determine the reference intervals for serum chemistry parameters in this species. Findings show values of total bilirubin, creatinine, alkaline phosphatase, alanine aminotransferase, urea nitrogen, serum albumin, and gamma glutamic transpeptidase having a non-normal distribution. Based on nonparametric tests, significant differences between male and female values were observed for cholesterol, serum calcium, and gamma glutamic transpeptidase. Males were significantly heavier than females. The reference intervals presented were estimated by the nonparametric percentile method. RP MALAGA, CA (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 16 TC 14 Z9 14 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 APR PY 1991 VL 41 IS 2 BP 143 EP 145 PG 3 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA FT444 UT WOS:A1991FT44400009 PM 1658442 ER PT J AU MALAGA, CA WELLER, RE DAGLE, GE PERRY, RL BAER, JF AF MALAGA, CA WELLER, RE DAGLE, GE PERRY, RL BAER, JF TI SPONTANEOUS HYDROCEPHALUS IN AN ADULT OWL MONKEY (AOTUS-NANCYMAI) SO LABORATORY ANIMAL SCIENCE LA English DT Note ID MALFORMATIONS C1 MICHIGAN STATE UNIV, DEPT SMALL ANIM CLIN, E LANSING, MI 48824 USA. RP MALAGA, CA (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 7 TC 3 Z9 3 U1 1 U2 1 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 APR PY 1991 VL 41 IS 2 BP 182 EP 184 PG 3 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA FT444 UT WOS:A1991FT44400021 PM 1658453 ER PT J AU THOMAS, RC SUN, L CROOKS, RM RICCO, AJ AF THOMAS, RC SUN, L CROOKS, RM RICCO, AJ TI REAL-TIME MEASUREMENTS OF THE GAS-PHASE ADSORPTION OF NORMAL-ALKYLTHIOL MONOLAYERS AND MULTILAYERS ON GOLD SO LANGMUIR LA English DT Letter ID ORGANIZED MOLECULAR ASSEMBLIES; STRUCTURAL CHARACTERIZATION; ORGANOSULFUR COMPOUNDS; FILMS; SURFACES; THIOLS; WAVE; COADSORPTION; DISULFIDES; SENSORS AB Results of surface acoustic wave, ellipsometric, and electrochemical experiments indicating that stable mono- or multilayer films result from the gas-phase chemisorption of n-alkylthiol molecules onto Au substrates are reported. Measurement of the mass and thickness of CH3(CH2)6SH films indicates a single, stable monolayer, while CH3(CH2)15SH deposition results in mono- or multilayers depending upon the experimental conditions. The first in situ kinetic measurements of the self-assembly of such layers are also discussed. C1 UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. UNIV NEW MEXICO,CTR HIGH TECHNOL MAT,ALBUQUERQUE,NM 87131. SANDIA NATL LABS,DIV MICROSENSOR 1163,ALBUQUERQUE,NM 87185. RI Ricco, Antonio/A-5273-2010 NR 31 TC 150 Z9 151 U1 2 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0743-7463 J9 LANGMUIR JI Langmuir PD APR PY 1991 VL 7 IS 4 BP 620 EP 622 DI 10.1021/la00052a004 PG 3 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA FH173 UT WOS:A1991FH17300004 ER PT J AU RUSSELL, TP ANASTASIADIS, SH MENELLE, A FELCHER, GP SATIJA, SK AF RUSSELL, TP ANASTASIADIS, SH MENELLE, A FELCHER, GP SATIJA, SK TI SEGMENT DENSITY DISTRIBUTION OF SYMMETRICAL DIBLOCK COPOLYMERS AT THE INTERFACE BETWEEN 2 HOMOPOLYMERS AS REVEALED BY NEUTRON REFLECTIVITY SO MACROMOLECULES LA English DT Article ID MULTICOMPONENT POLYMER SYSTEMS; BLOCK COPOLYMERS; MOLECULAR DESIGN; BLENDS; FILMS AB The segment density distribution of symmetric, diblock copolymers of poly(styrene), PS, and poly(methyl methacrylate), PMMA, denoted P(S-b-MMA), were investigated by neutron reflectivity. Selective labeling of either block of the P(S-b-MMA) or of the PS or PMMA with deuterium provided the contrast necessary to isolate the distribution of the segments of the components at the interface. Results from a series of experiments were used to solve a simultaneous set of linear equations that yielded the segment density profiles of the PS and PMMA segments of the homopolymers and copolymers at the interface. It was found that the interface formed between the PS and PMMA segments could be described by a hyperbolic tangent function with an effective width of 75 angstrom. This width is 50% broader than that found between the PS and PMMA homopolymers in the absence of the diblock copolymer and between the PS and PMMA lamellar microdomains of the pure P(S-b-MMA) in the bulk. A significant penetration of the PS and PMMA homopolymers into the interfacial region was also found. The area occupied by the copolymer at the interface between the homopolymers is 30% larger than that of the copolymers in the bulk, lamellar microstructure. C1 ARGONNE NATL LAB, DIV MAT SCI, ARGONNE, IL 60439 USA. NATL INST STAND & TECHNOL, DIV REACTOR RADIAT, GAITHERSBURG, MD 20899 USA. RP RUSSELL, TP (reprint author), IBM CORP, DIV RES, ALMADEN RES CTR, 650 HARRY RD, SAN JOSE, CA 95120 USA. RI Anastasiadis, Spiros/D-2778-2009 OI Anastasiadis, Spiros/0000-0003-0936-1614 NR 31 TC 87 Z9 87 U1 1 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD APR 1 PY 1991 VL 24 IS 7 BP 1575 EP 1582 DI 10.1021/ma00007a020 PG 8 WC Polymer Science SC Polymer Science GA FE892 UT WOS:A1991FE89200020 ER PT J AU JOLIOT, M MAZOYER, BM HUESMAN, RH AF JOLIOT, M MAZOYER, BM HUESMAN, RH TI INVIVO NMR SPECTRAL PARAMETER-ESTIMATION - A COMPARISON BETWEEN TIME AND FREQUENCY-DOMAIN METHODS SO MAGNETIC RESONANCE IN MEDICINE LA English DT Article ID MAXIMUM-ENTROPY METHOD; MAGNETIC-RESONANCE SPECTROSCOPY; EXPONENTIALLY DAMPED SINUSOIDS; SINGULAR VALUE DECOMPOSITION; LINEAR PREDICTION; LIKELIHOOD ESTIMATION; SIGNALS; NOISE C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP JOLIOT, M (reprint author), CEA,SERV HOSP FREDERIC JOLIOT,ORSAY,FRANCE. RI mazoyer, bernard/A-5369-2009; Mazoyer, Bernard/B-6303-2012 OI mazoyer, bernard/0000-0003-0970-2837; Mazoyer, Bernard/0000-0003-0970-2837 FU NCI NIH HHS [CA38086]; NHLBI NIH HHS [HL25840] NR 32 TC 26 Z9 27 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0740-3194 J9 MAGNET RESON MED JI Magn.Reson.Med. PD APR PY 1991 VL 18 IS 2 BP 358 EP 370 DI 10.1002/mrm.1910180210 PG 13 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA FF361 UT WOS:A1991FF36100009 PM 2046517 ER PT J AU RIKARD, D AF RIKARD, D TI COMPUTERIZED CALCULATIONS FOR RADIOGRAPHY AND ULTRASONICS SO MATERIALS EVALUATION LA English DT Note RP RIKARD, D (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,NONDESTRUCT EVALUAT SECT,LIVERMORE,CA 94550, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD APR PY 1991 VL 49 IS 4 BP 452 EP & PG 0 WC Materials Science, Characterization & Testing SC Materials Science GA FF853 UT WOS:A1991FF85300001 ER PT J AU PHILLIPS, JM KRAUSE, S LANAGAN, MT OLSON, RA SHARPE, PR RAY, ML DORRIS, SE GORETTA, KC AF PHILLIPS, JM KRAUSE, S LANAGAN, MT OLSON, RA SHARPE, PR RAY, ML DORRIS, SE GORETTA, KC TI BI-SR-CA-CU-O/CA2CUO3 COMPOSITES SO MATERIALS LETTERS LA English DT Article ID CU-O SYSTEM; PHASE-DIAGRAM; FILMS; SUBSTRATE; BI2CA1+XSR2-XCU2O8+Y; SUPERCONDUCTIVITY; YBA2CU3O7-X; DEPOSITION; Y2BACUO5; GROWTH AB Ca2CuO3 and Sr2CuO3 were examined for use as insulators with Bi-Sr-Ca-Cu-O superconductors. Only Ca2CuO3 could be successfully synthesized and sintered; the sintering required a slightly higher temperature than that required for the 85 K phase in the Bi-Sr-Ca-Cu-O system. Ca2CuO3 and the 85 K Bi-Sr-Ca-Cu-O phase have nearly equal thermal expansion coefficients and can be cofired into monolithic forms. Ca2CuO3 is a highly conductive semiconductor at room temperature. Ca2CuO3 is highly hygroscopic and exposure to moisture can reduce its conductivity by up to three orders of magnitude. RP PHILLIPS, JM (reprint author), ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439, USA. NR 25 TC 6 Z9 6 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-577X J9 MATER LETT JI Mater. Lett. PD APR PY 1991 VL 11 IS 1-2 BP 10 EP 14 DI 10.1016/0167-577X(91)90180-E PG 5 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA FN409 UT WOS:A1991FN40900003 ER PT J AU CAMPET, G GEOFFROY, C MANAUD, JP PORTIER, J SUN, ZW SALARDENNE, J KEOU, P AF CAMPET, G GEOFFROY, C MANAUD, JP PORTIER, J SUN, ZW SALARDENNE, J KEOU, P TI INFLUENCE OF CRYSTALLINITY AND STRUCTURAL DEFECTS ON THE ELECTRONIC-PROPERTIES OF TRANSPARENT AND CONDUCTIVE SRTIO3 FILMS, AMORPHOUS OR CRYSTALLINE - COMPARATIVE-STUDY WITH ITO FILMS SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article AB The electronic properties of transparent and conductive SrTiO3 films, amorphous or crystalline, deposited by RF cathodic sputtering have been investigated and compared with those of amorphous or crystalline ITO deposits. The interactions between Ti3+:3d1(t2g) non-bonding states, occurring in crystalline SrTiO3 films that have a high oxygen deficiency, are responsible for the unexpectedly small band gap energy (E(g) = 2.5 eV). On the other hand, the band gap energy of amorphous SrTiO3 deposits (E(g) = 3.0 eV) is close to that reported for a single crystal of SrTiO3 (E(g) = 3.2 eV). Similar behaviour is not observed for ITO since amorphous and crystalline films have rather similar E(g) values (2.6 and 2.7 eV respectively). Finally, the work function of SrTiO3 films is smaller than that of ITO films. C1 SOLAR ENERGY RES INST,GOLDEN,CO 80401. UNIV BORDEAUX 1,MAT MICROELECTR LAB,F-33405 TALENCE,FRANCE. RP CAMPET, G (reprint author), UNIV BORDEAUX 1,CNRS,CHIM SOLIDE LAB,351 COURS LIBERAT,F-33405 TALENCE,FRANCE. NR 12 TC 11 Z9 11 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD APR PY 1991 VL 8 IS 1 BP 45 EP 52 DI 10.1016/0921-5107(91)90017-P PG 8 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA FD505 UT WOS:A1991FD50500005 ER PT J AU DYKHUIZEN, RC AF DYKHUIZEN, RC TI ASYMPTOTIC SOLUTIONS FOR SOLUTE TRANSPORT IN DUAL VELOCITY MEDIA SO MATHEMATICAL GEOLOGY LA English DT Article DE DUAL POROSITY; DUAL VELOCITY; FRACTURED MEDIUM; MOMENT ANALYSIS; POROUS FLOW ID 2 PHASE SYSTEMS; GENERAL DEVELOPMENT; MULTIPHASE SYSTEMS; MODELS; DIFFUSION; EQUATIONS AB Dual velocity (often called dual porosity) models exist to describe a variety of solute transport processes. These exist for both chemical and geochemical systems. All current models reviewed in this paper can be represented by a generalized form. Characteristics of the solutions are obtained by investigating moments of the solution. Of particular interest is the simple asymptotic behavior. To verify the approach, an example problem is investigated where the exact analytical solution is compared to the asymptotic solution. It is shown that many dual velocity models can be well-represented by the inclusion of an increased dispersion term in a simpler single velocity model. RP DYKHUIZEN, RC (reprint author), SANDIA NATL LABS,DIV FLUID MECH & HEAT TRANSFER,ALBUQUERQUE,NM 87185, USA. NR 26 TC 3 Z9 4 U1 0 U2 2 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0882-8121 J9 MATH GEOL JI Math. Geol. PD APR PY 1991 VL 23 IS 3 BP 383 EP 401 DI 10.1007/BF02065789 PG 19 WC Geosciences, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Geology; Mathematics GA FL687 UT WOS:A1991FL68700007 ER PT J AU GRIEWANK, A AF GRIEWANK, A TI THE GLOBAL CONVERGENCE OF PARTITIONED BFGS ON PROBLEMS WITH CONVEX DECOMPOSITIONS AND LIPSCHITZIAN GRADIENTS SO MATHEMATICAL PROGRAMMING LA English DT Article DE GLOBAL CONVERGENCE; R-LINEAR OR R-SUPERLINEAR CONVERGENCE; PARTIAL SEPARABILITY; PARTITIONED UPDATING; UNIFORM CONVEXITY ID QUASI-NEWTON METHODS; BROYDEN-LIKE METHODS; UNCONSTRAINED MINIMIZATION; OPTIMIZATION PROBLEMS; LOCAL CONVERGENCE; HILBERT-SPACE; SEARCH AB The main purpose of this paper is the extension of Powell's (1976) global convergence result to the partitioned BFGS method introduced by Griewank and Toint (1982). Even in the unpartitioned case the original result is strengthened because the search directions need not be computed exactly and the gradient is only required to be Lipschitzian rather than differentiable. Using the PSI-functional of Byrd and Nocedal (1987) a strong form of R-superlinear convergence is obtained if the element functions are uniformly convex and their gradients are strictly differentiable at the minimizer x* only. In order to deal with the possibility of singular functions we utilize a damping of the BFGS update that becomes inactive if the problem turns out to be regular near x*. RP GRIEWANK, A (reprint author), ARGONNE NATL LAB,DIV MATH & COMP SCI,ARGONNE,IL 60439, USA. OI Griewank, Andreas/0000-0001-9839-1473 NR 36 TC 17 Z9 17 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0025-5610 J9 MATH PROGRAM JI Math. Program. PD APR PY 1991 VL 50 IS 2 BP 141 EP 175 DI 10.1007/BF01594933 PG 35 WC Computer Science, Software Engineering; Operations Research & Management Science; Mathematics, Applied SC Computer Science; Operations Research & Management Science; Mathematics GA FJ664 UT WOS:A1991FJ66400001 ER PT J AU GOLDSTEIN, CI AF GOLDSTEIN, CI TI MULTIGRID ANALYSIS OF FINITE-ELEMENT METHODS WITH NUMERICAL-INTEGRATION SO MATHEMATICS OF COMPUTATION LA English DT Article ID BOUNDARY-VALUE-PROBLEMS; V-CYCLE; CONVERGENCE; ALGORITHMS AB We analyze multigrid convergence rates when elliptic boundary value problems are discretized using finite element methods with numerical integration. The resulting discrete problem does not fall into the standard variational framework for analyzing multigrid methods since the bilinear forms on different grid levels are not suitably related to each other. We first discuss extensions of the standard variational multigrid theory and then apply these results to the case of numerical quadrature. In particular, it is shown that the V - cycle algorithm has a convergence rate independent of grid size under suitable conditions. RP GOLDSTEIN, CI (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973, USA. NR 20 TC 4 Z9 4 U1 0 U2 0 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 SN 0025-5718 J9 MATH COMPUT JI Math. Comput. PD APR PY 1991 VL 56 IS 194 BP 409 EP 436 DI 10.2307/2008389 PG 28 WC Mathematics, Applied SC Mathematics GA FK355 UT WOS:A1991FK35500001 ER PT J AU GUNZBURGER, MD MEIR, AJ PETERSON, JS AF GUNZBURGER, MD MEIR, AJ PETERSON, JS TI ON THE EXISTENCE, UNIQUENESS, AND FINITE-ELEMENT APPROXIMATION OF SOLUTIONS OF THE EQUATIONS OF STATIONARY, INCOMPRESSIBLE MAGNETOHYDRODYNAMICS SO MATHEMATICS OF COMPUTATION LA English DT Article AB We consider the equations of stationary, incompressible magneto-hydrodynamics posed in a bounded domain in three dimensions and treat the full, coupled system of equations with inhomogeneous boundary conditions. Under certain conditions on the data, we show that the existence and uniqueness of the solution of a weak formulation of the equations can be guaranteed. We discuss a finite element discretization of the equations and prove an optimal estimate for the error of the approximate solution. C1 CARNEGIE MELLON UNIV, DEPT MATH, PITTSBURGH, PA 15213 USA. UNIV CALIF LOS ALAMOS SCI LAB, DIV COMP & COMMUN, LOS ALAMOS, NM 87545 USA. VIRGINIA POLYTECH INST & STATE UNIV, DEPT MATH, BLACKSBURG, VA 24061 USA. OI Meir, Amnon/0000-0001-5085-9962 NR 21 TC 92 Z9 97 U1 0 U2 0 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA 201 CHARLES ST, PROVIDENCE, RI 02940-2213 USA SN 0025-5718 EI 1088-6842 J9 MATH COMPUT JI Math. Comput. PD APR PY 1991 VL 56 IS 194 BP 523 EP 563 DI 10.2307/2008394 PG 41 WC Mathematics, Applied SC Mathematics GA FK355 UT WOS:A1991FK35500006 ER PT J AU SYN, CK TAYLOR, JS FUCHS, BA VELSKO, SP AF SYN, CK TAYLOR, JS FUCHS, BA VELSKO, SP TI DIAMOND TURNING - OPTIMUM MACHINING OF OPTICAL-CRYSTALS SO MECHANICAL ENGINEERING LA English DT Article RP SYN, CK (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0025-6501 J9 MECH ENG JI Mech. Eng. PD APR PY 1991 VL 113 IS 4 BP 68 EP 72 PG 5 WC Engineering, Mechanical SC Engineering GA FE673 UT WOS:A1991FE67300013 ER PT J AU ROBINSON, SL THOMAS, GJ AF ROBINSON, SL THOMAS, GJ TI ACCELERATED FRACTURE DUE TO TRITIUM AND HELIUM IN 21-6-9 STAINLESS-STEEL SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article AB The effects of internal tritium and helium on the room-temperature tensile properties of a nitrogen-strengthened stainless steel, forged 21Cr-6Ni-9Mn (NITRONIC 40), were investigated by thermally charging tritium into tensile specimens and aging for selected times. The precipitation of helium as bubbles on dislocations greatly increased the yield strength, and as a consequence of dislocation pinning, the deformation mode changed from long-range dislocation motion to deformation twinning. The tensile specimens exhibited a 90 pct decrease in tensile ductility at 1438 appm He-3, accompanied by a severe change in fracture mode from ductile rupture to a dominantly intergranular fracture mode. Grain-boundary facets showed multiple striations where deformation twins had intersected the boundaries. Twinning began immediately upon yielding, and at small strains, the microstructure evolved into a fully hardened state, normally observed at 40 pct or greater strain in unexposed or hydrogen-charged 21-6-9. Fracture occurs at low strains in tritium-charged and aged 21-6-9, in part, because helium bubble precipitation causes the deformed microstructure to evolve to a heavily deformation-twinned state at a lower strain. Helium bubble precipitation on the grain boundaries may have caused a further loss in ductility. Fracture appeared to nucleate at the intersection of deformation twins with the grain boundary. RP ROBINSON, SL (reprint author), SANDIA NATL LABS,LIVERMORE,CA 94551, USA. NR 26 TC 11 Z9 13 U1 0 U2 2 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD APR PY 1991 VL 22 IS 4 BP 879 EP 886 DI 10.1007/BF02658998 PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA FE739 UT WOS:A1991FE73900010 ER PT J AU SUNWOO, AJ MORRIS, JW AF SUNWOO, AJ MORRIS, JW TI AGING CHARACTERISTICS OF ELECTRON-BEAM AND GAS TUNGSTEN ARC FUSION ZONES OF AL-CU-LI ALLOY 2090 SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID ALUMINUM-LITHIUM ALLOYS; ZR ALLOY; FRACTURE; PRECIPITATION; TOUGHNESS; BEHAVIOR; T1 AB A transmission electron microscopy (TEM) investigation of the electron beam (EB) and gas tungsten arc (GTA) fusion zones of 2090 indicates that in both the as-welded and aged conditions, the EB and GTA fusion zones lack the volume fraction and the homogeneity of strengthening precipitates found in the base metal. In the underaged and peak-aged conditions, the delta' phase is the primary strengthener, the volume fraction of T1 present being too low to be effective. The T1 precipitates are found either in the vicinity of other inclusions or at the dendrite boundaries. As the strength increases with postweld aging, the elongation decreases to 1 pct. The presence of the boundary phases and Cu- and Cl-containing inclusions at the boundaries leads to poor elongation. The joint efficiencies of the peak-aged EB and GTA weldments (EBWs and GTAWs, respectively) are 75 and 55 pct at 293 K and 75 and 50 pct at 77 K, respectively. Both EBWs and GTAWs have relatively low elongations. C1 UNIV CALIF BERKELEY,DEPT MAT SCI & ENGN,BERKELEY,CA 94552. RP SUNWOO, AJ (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720, USA. NR 35 TC 8 Z9 8 U1 1 U2 3 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD APR PY 1991 VL 22 IS 4 BP 903 EP 913 DI 10.1007/BF02659000 PG 11 WC Materials Science, Multidisciplinary SC Materials Science GA FE739 UT WOS:A1991FE73900012 ER PT J AU BROOKS, JA BASKES, MI GREULICH, FA AF BROOKS, JA BASKES, MI GREULICH, FA TI SOLIDIFICATION MODELING AND SOLID-STATE TRANSFORMATIONS IN HIGH-ENERGY DENSITY STAINLESS-STEEL WELDS SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID ALLOYS AB The solidification and solid-state transformations which occur during the high-energy density (HED) welding of austenitic stainless steel were studied. Comparisons were made between structures observed in gas tungsten arc (GTA) welds and those of electron beam (EB) and laser welds using Fe-Ni-Cr ternary alloys with Cr/Ni ratios ranging from 1.5 to 1.85. Weld solidification and microsegregation was modeled using a finite difference analysis and compared with experimental results. These calculations were also used to help interpret the origin of the observed microstructures. Calculations showed that little solid-state diffusion occurs during the solidification and cooling of primary austenite solidified welds, whereas structures which solidify as ferrite may become almost completely homogenized as a result of diffusion. A change in solidification mode from primary austenite to primary ferrite was found to occur at higher Cr/Ni ratios with the HED welds than with GTA welds and is attributed to dendrite tip undercooling. A nearly segregation-free, single-phase austenite structure which appears to be unique to the rapid solidification velocities and cooling rates of HED welds was also observed. It is suggested that this structure is a product of ferrite solidification which transforms to austenite via a massive transformation. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP BROOKS, JA (reprint author), SANDIA NATL LABS,LIVERMORE,CA 94550, USA. NR 51 TC 49 Z9 49 U1 3 U2 14 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD APR PY 1991 VL 22 IS 4 BP 915 EP 926 DI 10.1007/BF02659001 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA FE739 UT WOS:A1991FE73900013 ER PT J AU ZACHARIA, T DAVID, SA VITEK, JM AF ZACHARIA, T DAVID, SA VITEK, JM TI EFFECT OF EVAPORATION AND TEMPERATURE-DEPENDENT MATERIAL PROPERTIES ON WELD POOL DEVELOPMENT SO METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY LA English DT Article ID HEAT-TRANSFER; TRANSIENT MODEL; FREE-SURFACE; FLUID-FLOW; CONVECTION; GTA; PENETRATION AB This paper evaluates the effect of weld pool evaporation and thermophysical properties on the development of the weld pool. An existing computational model was modified to include vaporization and temperature-dependent thermophysical properties. Transient, convective heat transfer during gas tungsten arc (GTA) welding with and without vaporization effects and variable properties was studied. The present analysis differs from earlier studies that assumed no vaporization and constant values for all of the physical properties throughout the range of temperature of interest. The results indicate that consideration of weld pool vaporization effects and variable physical properties produce significantly different weld model predictions. The calculated results are consistent with previously published experimental findings. RP ZACHARIA, T (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831, USA. OI Zacharia, Thomas/0000-0001-6463-5425 NR 31 TC 76 Z9 80 U1 0 U2 4 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2141 J9 METALL TRANS B PD APR PY 1991 VL 22 IS 2 BP 233 EP 241 DI 10.1007/BF02652488 PG 9 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA FE230 UT WOS:A1991FE23000009 ER PT J AU ZACHARIA, T DAVID, SA VITEK, JM KRAUS, HG AF ZACHARIA, T DAVID, SA VITEK, JM KRAUS, HG TI COMPUTATIONAL MODELING OF STATIONARY GAS-TUNGSTEN-ARC WELD POOLS AND COMPARISON TO STAINLESS STEEL-304 EXPERIMENTAL RESULTS SO METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY LA English DT Article ID FUSION ZONE GEOMETRY; SURFACE TEMPERATURES; TRANSIENT MODEL; HEAT-TRANSFER; FLUID-FLOW; LASER; GTA; SOLIDIFICATION; CONVECTION; TENSION AB A systematic study was carried out to verify the predictions of a transient multidimensional computational model by comparing the numerical results with the results of an experimental study. The welding parameters were chosen such that the predictions of the model could be correlated with the results of an earlier experimental investigation of the weld pool surface temperatures during spot gas-tungsten-arc (GTA) welding of Type 304 stainless steel (SS). This study represents the first time that such a comprehensive attempt has been made to experimentally verify the predictions of a numerical study of weld pool fluid flow and heat flow. The computational model considers buoyancy and electromagnetic and surface tension forces in the solution of convective heat transfer in the weld pool. In addition, the model treats the weld pool surface as a truly deformable surface. Theoretical predictions of the weld pool surface temperature distributions, the cross-sectional weld pool size and shape, and the weld pool surface topology were compared with corresponding experimental measurements. Comparison of the theoretically predicted and the experimentally obtained surface temperature profiles indicated agreement within +/- 8 pct for the best theoretical models. The predicted surface profiles were found to agree within +/- 20 pct on dome height and +/- 8 pct on weld pool diameter for the best theoretical models. The predicted weld cross-sectional profiles were overlaid on macrographs of the actual weld cross sections, and they were found to agree very well for the best theoretical models. C1 EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. RP ZACHARIA, T (reprint author), OAK RIDGE NATL LAB,RES STAFF,OAK RIDGE,TN 37831, USA. OI Zacharia, Thomas/0000-0001-6463-5425 NR 39 TC 43 Z9 44 U1 0 U2 2 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2141 J9 METALL TRANS B PD APR PY 1991 VL 22 IS 2 BP 243 EP 257 DI 10.1007/BF02652489 PG 15 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA FE230 UT WOS:A1991FE23000010 ER PT J AU WANG, ZL BENTLEY, J AF WANG, ZL BENTLEY, J TI OPTIMUM EXPERIMENTAL CONDITIONS FOR QUANTITATIVE SURFACE MICROANALYSIS BY REFLECTION ELECTRON ENERGY-LOSS SPECTROSCOPY SO MICROSCOPY MICROANALYSIS MICROSTRUCTURES LA English DT Article; Proceedings Paper CT LAKE TAHOE WORKSHOP ON ELECTRON ENERGY LOSS SPECTROSCOPY CY AUG 18-22, 1990 CL LAKE TAHOE, CA SP GATAN ID PLASMON INELASTIC-SCATTERING; CRYSTAL-SURFACES; LOSS SPECTRA; RHEED; REELS AB Experimental conditions for obtaining high quality core-shell ionization edges in reflection electron energy-loss spectroscopy (REELS) are investigated. Under the (600) specular "mirror" reflection conditions and using the relative ionization cross-section measured from a MgO thin foil in the transmission geometry for collection semi-angle beta = 1.2 mrad, the chemical composition of MgO (100) surfaces is determined to be N(O)/N(Mg) = 1.5 +/- 0.15. This value is not significantly affected by varying the resonance diffraction conditions near the [001] zone axis, under which the spectra were acquired. An incorrect apparent composition will result if channeling effects along the [011] zone axis are not considered properly. Surface microanalysis is limited by the accuracy of the core-shell effective ionization cross-section (EICS), which depends not only on the property of a single atom but also on the dynamical elastic and inelastic scattering and channeling processes of electrons. An experimental method is outlined by which to measure the relative EICS from a thin foil specimen in the transmission case under the equivalent resonance conditions as in reflection geometry. C1 UNIV TENNESSEE,DEPT MAT SCI & ENGN,KNOXVILLE,TN 37996. RP WANG, ZL (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN 37831, USA. RI Wang, Zhong Lin/E-2176-2011 OI Wang, Zhong Lin/0000-0002-5530-0380 NR 20 TC 8 Z9 8 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 1154-2799 J9 MICROSC MICROANAL M JI Microsc. Microanal. Microstruct. PD APR-JUN PY 1991 VL 2 IS 2-3 BP 301 EP 314 PG 14 WC Microscopy; Spectroscopy SC Microscopy; Spectroscopy GA FZ440 UT WOS:A1991FZ44000017 ER PT J AU ROBERTO, J AF ROBERTO, J TI TOWARD A NATIONAL AGENDA IN MATERIALS SCIENCE AND ENGINEERING SO MRS BULLETIN LA English DT Editorial Material RP ROBERTO, J (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37830, USA. NR 0 TC 0 Z9 0 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 APR PY 1991 VL 16 IS 4 BP 7 EP 7 PG 1 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA FH268 UT WOS:A1991FH26800001 ER PT J AU RAMALHO, AT NASCIMENTO, ACH LITTLEFIELD, LG NATARAJAN, AT SASAKI, MS AF RAMALHO, AT NASCIMENTO, ACH LITTLEFIELD, LG NATARAJAN, AT SASAKI, MS TI FREQUENCY OF CHROMOSOMAL-ABERRATIONS IN A SUBJECT ACCIDENTALLY EXPOSED TO CS-137 IN THE GOIANIA (BRAZIL) RADIATION ACCIDENT - INTERCOMPARISON AMONG 4 LABORATORIES SO MUTATION RESEARCH LA English DT Article DE CHROMOSOMAL ABERRATION SCORING; INTERLABORATORY COMPARISON AB After the Goiania radiation accident which occurred in Brazil in September 1987, an intercomparison was performed to determine whether different cytogenetic laboratories would score similar frequencies of chromosomal aberrations in cultures of lymphocytes of a highly exposed patient. For this purpose 2 chromosome slides from the subject were scored by 4 laboratories in total. The results were consistently close and confirmed the high frequency of chromosome-type aberrations observed initially in the patient. C1 LEIDEN STATE UNIV,DEPT RADIAT GENET & CHEM MUTAGENESIS,WASSENAARSEWEG 72,POB 9503,2312 AV LEIDEN,NETHERLANDS. KYOTO UNIV,CTR RADIAT BIOL,KYOTO 606,JAPAN. OAK RIDGE ASSOCIATED UNIV,DIV MED SCI,OAK RIDGE,TN 37830. COMISSAO NACL ENERGIA NUCL,INST RADIOPROTECAO & DOSIMETRIA,BR-22602 RIO DE JANEIRO,BRAZIL. NR 8 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8262 J9 MUTAT RES PD APR PY 1991 VL 252 IS 2 BP 157 EP 160 DI 10.1016/0165-1161(91)90016-2 PG 4 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA FE677 UT WOS:A1991FE67700005 PM 2017205 ER PT J AU BISHOP, JB RUTLEDGE, J ARONSON, J GENEROSO, WM AF BISHOP, JB RUTLEDGE, J ARONSON, J GENEROSO, WM TI MUTATIONAL CONSEQUENCES OF MOUSE ZYGOTE EXPOSURE SO MUTATION RESEARCH LA English DT Meeting Abstract C1 UNIV WASHINGTON,SEATTLE,WA 98195. NIEHS,RES TRIANGLE PK,NC 27709. OAK RIDGE NATL LAB,OAK RIDGE,TN. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8262 J9 MUTAT RES PD APR PY 1991 VL 252 IS 2 BP 188 EP 188 DI 10.1016/0165-1161(91)90061-C PG 1 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA FE677 UT WOS:A1991FE67700051 ER PT J AU COMPTON, PJE SMITH, MT GRANT, SG BIGBEE, WL JENSEN, RH AF COMPTON, PJE SMITH, MT GRANT, SG BIGBEE, WL JENSEN, RH TI VARIANT RED-BLOOD-CELLS ARISING FROM GENE-DUPLICATING EVENTS INCREASE WITH AGE IN HUMAN-SUBJECTS SO MUTATION RESEARCH LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,SCH PUBL HLTH,BERKELEY,CA 94720. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV BIOMED SCI,LIVERMORE,CA 94550. RI Grant, Stephen/D-6984-2014 OI Grant, Stephen/0000-0002-9236-0913 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 0921-8262 J9 MUTAT RES PD APR PY 1991 VL 252 IS 2 BP 214 EP 214 DI 10.1016/0165-1161(91)90113-M PG 1 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA FE677 UT WOS:A1991FE67700103 ER PT J AU THOMPSON, LH AF THOMPSON, LH TI PROPERTIES AND APPLICATIONS OF HUMAN DNA-REPAIR GENES SO MUTATION RESEARCH LA English DT Article DE HUMAN DNA REPAIR GENES; MAPPING REPAIR GENES; CLONING REPAIR GENES; CYTOCHROME-P450; HETEROCYCLIC AMINES ID DEFICIENT CHO CELLS; SACCHAROMYCES-CEREVISIAE; COMPLEMENTATION GROUP; MUTAGENS TRP-P-2; MAMMALIAN-CELLS; COOKED BEEF; CLONING; MUTANT; IQ AB The importance of understanding DNA repair processes is discussed in terms of the origins of human cancer. Several human repair genes have been mapped to specific human chromosomes using somatic cell hybrids. It is noteworthy that 3 of these genes lie in the same region of chromosome 19: genes ERCC1 and ERCC2, which are involved in nucleotide excision repair, and XRCC1, which is involved in the repair of strand breaks. The genes XRCC1 and ERCC2 were cloned from cosmid libraries prepared from DNA transformants of the CHO mutants EM9 and UV5, respectively. Analysis of the cDNA sequence of ERCC2 showed that the protein encoded by this gene is highly homologous (73%) to the RAD3 repair protein in the yeast Saccharomyces cerevisiae. Thus, the known properties of RAD3 combined with the high homology provide the first insight about the biochemical role of a human repair protein involved in the incision step of nucleotide excision repair. So far XRCC1 is the only cloned mammalian gene involved in repairing damage from ionizing radiation. The UV5 mutant line was also applied to problems in environmental mutagenesis by introducing the mouse cytochrome P(3)450 (P450IA2 subfamily) gene for metabolic activation of aromatic amines. We show in a rapid differential cytotoxicity assay with 2 compounds found in cooked beef (IQ, 2-amino-3-methylimidazo[4,5-f]quinoline and PhIP, 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine) that this gene is efficiently expressed in the transformed UV5P3 cells. Reversion of the repair deficiency in these cells will give a matched pair of cell lines that are metabolically proficient and repair deficient. Such lines will provide a rapid assay for genotoxic heterocyclic amines requiring activation. RP THOMPSON, LH (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV BIOMED SCI,LIVERMORE,CA 94550, USA. NR 25 TC 32 Z9 33 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8262 J9 MUTAT RES PD APR PY 1991 VL 247 IS 2 BP 213 EP 219 DI 10.1016/0027-5107(91)90017-I PG 7 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA FH263 UT WOS:A1991FH26300006 PM 2011139 ER PT J AU NORBY, RJ ONEILL, EG AF NORBY, RJ ONEILL, EG TI LEAF-AREA COMPENSATION AND NUTRIENT INTERACTIONS IN CO2-ENRICHED SEEDLINGS OF YELLOW-POPLAR (LIRIODENDRON-TULIPIFERA L) SO NEW PHYTOLOGIST LA English DT Article DE ATMOSPHERIC CO2; CO2 ASSIMILATION; LIRIODENDRON-TULIPIFERA L (YELLOW-POPLAR); NUTRIENT DEFICIENCY; WATER-USE EFFICIENCY ID ATMOSPHERIC CARBON-DIOXIDE; WATER-USE EFFICIENCY; PHOSPHORUS DEFICIENCY; GROWTH-RESPONSES; PINUS-RADIATA; HIGH CO2; ENRICHMENT; STRESS; CONDUCTANCE; DROUGHT AB The responses of yellow-poplar (Liriodendron tulipifera L.) seedlings to elevated levels of atmospheric CO2 were investigated to identify attributes governing growth and physiological responses to CO2. Based on the pattern of leaf initiation and nutrient requirements of the species, it was predicted that (1) CO2 enrichment would enhance growth of yellow-poplar seedlings both through accelerated leaf area production and through higher rates of carbon assimilation per unit leaf area; and (2) growth enhancement of yellow-poplar by CO2 enrichment would be reduced by nutrient limitations. The hypotheses were tested in an experiment in which yellow-poplar plants were grown from seed for 24 weeks in controlled-environment chambers. The experimental design comprised three atmospheric CO2 concentrations (371, 493, and 787 cm3 m-3), two levels of mineral nutrients (unfertilized or weekly additions of complete nutrient solution), and three harvests (6, 12, and 24 weeks). Plant growth rate, water use, foliar gas exchange, component dry weights, and nutrient contents were measured. Both hypotheses were rejected. Whole-plant dry weight increased similarly with CO2 enrichment in plants provided with additional mineral nutrients and in unfertilized plants, although the fertilized plants grew 10-fold larger. The increase in dry weight resulting from elevated CO2 occurred only in root systems. Although leaves were produced continuously during the experiment, leaf area was slightly reduced in elevated CO2, and the whole-plant growth response was wholly attributable to an increase in carbon assimilation per unit leaf area. Although the compensation between photosynthesis and leaf area reduced the potential growth response to CO2, the reduction in leaf area ratio was associated with a significant increase in water-use efficiency. This unexpected result demonstrated the importance of feedbacks and interactions between resources in shaping the response of a plant to CO2. RP NORBY, RJ (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,POB 2008,OAK RIDGE,TN 37831, USA. RI Norby, Richard/C-1773-2012 OI Norby, Richard/0000-0002-0238-9828 NR 29 TC 128 Z9 135 U1 1 U2 17 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0028-646X J9 NEW PHYTOL JI New Phytol. PD APR PY 1991 VL 117 IS 4 BP 515 EP 528 DI 10.1111/j.1469-8137.1991.tb00956.x PG 14 WC Plant Sciences SC Plant Sciences GA FL481 UT WOS:A1991FL48100001 ER PT J AU PARK, YJ REICH, M AF PARK, YJ REICH, M TI NONLINEAR 3D PIPING ANALYSIS UNDER STOCHASTIC DYNAMIC LOADS SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article AB A new analytical method is presented for non-linear 3D piping systems subjected to stochastic dynamic loadings. First, the paper describes the development of an empirical formulation for the strength and deformation characteristics of piping systems based on a detailed finite-element shell analysis of various pipebends. Five structural parameters are selected to characterize a typical nuclear power piping design in the formulation. Second, the use of a simplified plastic hinge model is proposed in which the non-linear behavior of pipebends under stochastic loadings is accounted for by using an orthotropic biaxial hysteretic model. A numerical example and comparison with other methods are illustrated in terms of computational time and practicality of the method. RP PARK, YJ (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 8 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD APR PY 1991 VL 126 IS 2 BP 233 EP 243 DI 10.1016/0029-5493(91)90113-V PG 11 WC Nuclear Science & Technology SC Nuclear Science & Technology GA FN699 UT WOS:A1991FN69900006 ER PT J AU DUFFY, L AF DUFFY, L TI THE US-DOE PREPARES FOR ITS MULTI-BILLION DOLLAR CLEANUP SO NUCLEAR ENGINEERING INTERNATIONAL LA English DT Article RP DUFFY, L (reprint author), US DOE,OFF ENVIRONM RESTORAT & WASTE MANAGEMENT,1000 INDEPENDENCE AVE SW,WASHINGTON,DC 20545, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU REED BUSINESS PUBLISHING LTD PI SUTTON PA QUADRANT HOUSE THE QUADRANT, SUTTON, SURREY, ENGLAND SM2 5AS SN 0029-5507 J9 NUCL ENG INT JI Nucl. Eng. Int. PD APR PY 1991 VL 36 IS 441 BP 32 EP 36 PG 5 WC Nuclear Science & Technology SC Nuclear Science & Technology GA FH081 UT WOS:A1991FH08100008 ER PT J AU ROMANELLI, F CHEN, L WHITE, RB AF ROMANELLI, F CHEN, L WHITE, RB TI STABILITY OF INTERNAL KINK MODES WITH ENERGETIC TRAPPED-PARTICLES SO NUCLEAR FUSION LA English DT Article ID OSCILLATIONS; PLASMAS AB An analysis of the stability of ideal internal kink modes in high temperature tokamaks is presented. The theory includes kinetic effects associated with energetic trapped particles, bulk ion diamagnetic drifts as well as transit resonances. A corresponding dispersion relation is derived and analysed both analytically and numerically. The roles and implications of various kinetic effects are delineated and comparisons with previously obtained results made. C1 PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08544. RP ROMANELLI, F (reprint author), ENTE NAZL ENERGIA ATOM FUS,EURATOM,CTR RIC ENERGIA FRASCATI,FRASCATI,ITALY. RI chen, liu/I-2297-2013; White, Roscoe/D-1773-2013; OI White, Roscoe/0000-0002-4239-2685; Romanelli, Francesco/0000-0001-9778-1090 NR 22 TC 11 Z9 11 U1 0 U2 8 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 APR PY 1991 VL 31 IS 4 BP 631 EP 646 DI 10.1088/0029-5515/31/4/002 PG 16 WC Physics, Fluids & Plasmas SC Physics GA FJ442 UT WOS:A1991FJ44200002 ER PT J AU WESSELBORG, C ALBURGER, DE AF WESSELBORG, C ALBURGER, DE TI PRECISION ENERGY MEASUREMENTS OF GAMMA-RAYS FROM TI-44 AND BA-133 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID BA-133; DECAY AB A LEPS-type Ge detector was used for precision energy measurements of the 68 and 78 keV gamma rays from the decay of Ti-44, with Ba-133 and Ta-182 as reference sources. The values obtained were 67.8679(14) keV and 78.3234(10) keV. The latter value is 13.6 eV lower than a previous report and suggests that systematic effects were present in the earlier determination of the 78 keV energy. The Ba-133 81 keV line was measured to be 80.9964(21) keV and we adopt 80.991(14) keV from the weighted average of all reported results. C1 UNIV GIESSEN,INST KERNPHYS,W-6300 GIESSEN,GERMANY. RP WESSELBORG, C (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 8 TC 4 Z9 4 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 APR 1 PY 1991 VL 302 IS 1 BP 89 EP 90 DI 10.1016/0168-9002(91)90496-D PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FK889 UT WOS:A1991FK88900012 ER PT J AU GREGORICH, KE AF GREGORICH, KE TI MAXIMUM-LIKELIHOOD DECAY CURVE FITS BY THE SIMPLEX-METHOD SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID ELEMENT-105 AB A multicomponent decay curve analysis technique has been developed and incorporated into the decay curve fitting computer code, MLDS (maximum likelihood decay by the simplex method). The fitting criteria are based on the maximum likelihood technique for decay curves made up of time binned events. The probabilities used in the likelihood functions are based on the Poisson distribution, so decay curves constructed from a small number of events are treated correctly. A simple utility is included which allows the use of discrete event times, rather than time-binned data, to make maximum use of the decay information. The search for the maximum in the multidimensional likelihood surface for multi-component fits is performed by the simplex method, which makes the success of the iterative fits extremely insensitive to the initial values of the fit parameters and eliminates the problems of divergence. The simplex method also avoids the problem of programming the partial derivatives of the decay curves with respect to all the variable parameters, which makes the implementation of new types of decay curves straightforward. Any of the decay curve parameters can be fixed or allowed to vary. Asymmetric error limits for each of the free parameters, which do not consider the covariance of the other free parameters, are determined. A procedure is presented for determining the error limits which contain the associated covariances. The curve fitting procedure in MLDS can easily be adapted for fits to other curves with any functional form. RP GREGORICH, KE (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,MS 88,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 12 TC 35 Z9 37 U1 1 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD APR 1 PY 1991 VL 302 IS 1 BP 135 EP 142 DI 10.1016/0168-9002(91)90501-G PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FK889 UT WOS:A1991FK88900017 ER PT J AU KONG, Y LYNN, KG AF KONG, Y LYNN, KG TI DECONVOLUTION OF POSITRON-ANNIHILATION GAMMA-RAY ENERGY-SPECTRA WITH THE MAXIMUM-ENTROPY PRINCIPLE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID LINESHAPES AB Deconvolution with the maximum entropy principle has been examined for analyzing positron annihilation gamma-ray energy spectra. When applied to variable energy positron beam measurements, this technique may make possible the quantitative study of depth-dependent local electron momentum distributions and other effects in solids without introducing spurious features. RP KONG, Y (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 11 TC 11 Z9 11 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 APR 1 PY 1991 VL 302 IS 1 BP 145 EP 149 DI 10.1016/0168-9002(91)90503-I PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FK889 UT WOS:A1991FK88900019 ER PT J AU LEUNG, KN GORDON, KC KUNKEL, WB MCKENNA, CM WALTHER, SR WILLIAMS, MD AF LEUNG, KN GORDON, KC KUNKEL, WB MCKENNA, CM WALTHER, SR WILLIAMS, MD TI AN ELECTRON-BEAM CHARGE NEUTRALIZATION SYSTEM FOR ION IMPLANTERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8TH INTERNATIONAL CONF ON ION IMPLANTATION TECHNOLOGY CY JUL 30-AUG 03, 1990 CL UNIV SURREY, GUILDFORD, ENGLAND SP INST PHYS, UNIV SURREY HO UNIV SURREY ID HEXABORIDE AB A new wafer-charge neutralization system which employs a curved solenoid magnetic guiding field and a large-area LaB6 cathode is described. This system generates a directed beam of low-energy electrons with total current of about 100 mA. The majority of the electrons that impinge on the wafer surface have energies less than 10 eV. This neutralization system is simple and compact, and could be easily incorporated into the existing high-current ion implanters. C1 VARIAN EXTR DIV,GLOUCESTER,MA. RP LEUNG, KN (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 55 IS 1-4 BP 94 EP 96 DI 10.1016/0168-583X(91)96143-9 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FN795 UT WOS:A1991FN79500021 ER PT J AU BROWN, IG DICKINSON, MR GALVIN, JE GODECHOT, X MACGILL, RA AF BROWN, IG DICKINSON, MR GALVIN, JE GODECHOT, X MACGILL, RA TI A BROAD-BEAM, HIGH-CURRENT METAL-ION IMPLANTATION FACILITY SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8TH INTERNATIONAL CONF ON ION IMPLANTATION TECHNOLOGY CY JUL 30-AUG 03, 1990 CL UNIV SURREY, GUILDFORD, ENGLAND SP INST PHYS, UNIV SURREY HO UNIV SURREY ID VAPOR VACUUM-ARC AB We have developed a high-current metal-ion implantation facility with which high-current beams of virtually all the solid metals of the periodic table can be produced. The facility makes use of a metal-vapor vacuum-arc ion source which is operated in a pulsed mode, with 0.25 ms pulse width and a repetition rate up to 100 pps. Beam extraction voltage is up to 100 kV, corresponding to an ion energy of up to several hundred keV because of the ion charge-state multiplicity; beam current is up to several amperes peak and around 10 mA time-averaged delivered onto target. Implantation is done in a broad-beam mode, with a direct line-of-sight from ion source to target. Here we describe the facility and some of the implants that have been carried out using it, including the "seeding" of silicon wafers prior to CVD with titanium, palladium or tungsten, the formation of buried iridium silicide layers, and actinide (uranium and thorium) doping of III-V compounds. RP BROWN, IG (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 16 TC 23 Z9 23 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 55 IS 1-4 BP 506 EP 510 DI 10.1016/0168-583X(91)96221-6 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FN795 UT WOS:A1991FN79500099 ER PT J AU QIAN, XY CARL, D BENASSO, J CHEUNG, NW LIEBERMAN, MA BROWN, IG GALVIN, JE MACGILL, RA CURRENT, MI AF QIAN, XY CARL, D BENASSO, J CHEUNG, NW LIEBERMAN, MA BROWN, IG GALVIN, JE MACGILL, RA CURRENT, MI TI A PLASMA IMMERSION ION-IMPLANTATION REACTOR FOR ULSI FABRICATION SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8TH INTERNATIONAL CONF ON ION IMPLANTATION TECHNOLOGY CY JUL 30-AUG 03, 1990 CL UNIV SURREY, GUILDFORD, ENGLAND SP INST PHYS, UNIV SURREY HO UNIV SURREY AB A plasma immersion ion implantation (PIII) reactor compatible with integrated-circuit fabrication has been developed. Using this system, metallic impurity gettering with a noble gas plasma, sub-100-nm p+/n junction formation with SiF4 plasma for preamorphization and BF3 plasma for doping, trench conformal p+ doping, and Pd ion seeding implantation for selective Cu electroless plating were successfully carried out. The PIII system consists of an electron cyclotron resonance plasma source, a processing chamber with wafer bias supply, a sputtering target with bias supply, gas handling and plasma diagnostic tools. The apparatus is described in this paper. Plasma characterization and reactor performance are also presented. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. APPL MAT INC,DIV IMPLANT,SANTA CLARA,CA 95054. RP QIAN, XY (reprint author), UNIV CALIF BERKELEY,FAC ELECT ENGN & COMP SCI,PLASMA ASSISTED MAT PROC LAB,BERKELEY,CA 94720, USA. NR 10 TC 21 Z9 21 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 55 IS 1-4 BP 884 EP 887 DI 10.1016/0168-583X(91)96300-A PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FN795 UT WOS:A1991FN79500178 ER PT J AU QIAN, XY KIANG, MH HUANG, J CARL, D CHEUNG, NW LIEBERMAN, MA BROWN, IG YU, KM CURRENT, MI AF QIAN, XY KIANG, MH HUANG, J CARL, D CHEUNG, NW LIEBERMAN, MA BROWN, IG YU, KM CURRENT, MI TI PLASMA IMMERSION PD ION-IMPLANTATION SEEDING PATTERN-FORMATION FOR SELECTIVE ELECTROLESS CU PLATING SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8TH INTERNATIONAL CONF ON ION IMPLANTATION TECHNOLOGY CY JUL 30-AUG 03, 1990 CL UNIV SURREY, GUILDFORD, ENGLAND SP INST PHYS, UNIV SURREY HO UNIV SURREY AB Selective plating of Cu for interconnects was carried out using plasma immersion Pd ion implantation and Cu electroless plating. Pd ions were sputtered from a negatively biased target and ionized in an Ar electron cyclotron resonance (ECR) plasma. The Pd ions were implanted into the SiO2 substrates biased with negative high pulsed voltages. In our studies, we found the required Pd seeding dose for Cu plating was on the order of 5 x 10(14)/cm2. With a direct Pd implantation, an intermediate activation step using a PdCl2 solution was eliminated. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. APPL MAT INC,DIV IMPLANT,SANTA CLARA,CA 95054. RP QIAN, XY (reprint author), UNIV CALIF BERKELEY,DEPT ELECT ENGN & COMP SCI,PLASMA ASSISTED MAT PROC LAB,BERKELEY,CA 94720, USA. RI Yu, Kin Man/J-1399-2012 OI Yu, Kin Man/0000-0003-1350-9642 NR 7 TC 16 Z9 18 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 55 IS 1-4 BP 888 EP 892 DI 10.1016/0168-583X(91)96301-Z PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FN795 UT WOS:A1991FN79500179 ER PT J AU QIAN, XY KIANG, MH CHEUNG, NW BROWN, IG GODECHOT, X GALVIN, JE MACGILL, RA YU, KM AF QIAN, XY KIANG, MH CHEUNG, NW BROWN, IG GODECHOT, X GALVIN, JE MACGILL, RA YU, KM TI METAL VAPOR VACUUM-ARC ION-IMPLANTATION FOR SEEDING OF ELECTROLESS CU PLATING SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 8TH INTERNATIONAL CONF ON ION IMPLANTATION TECHNOLOGY CY JUL 30-AUG 03, 1990 CL UNIV SURREY, GUILDFORD, ENGLAND SP INST PHYS, UNIV SURREY HO UNIV SURREY ID COPPER AB A metal vapor vacuum are (MEVVA) ion source has been used to implant Pd into SiO2 substrates. The ion implanted area formed a seeding layer on which a Cu film was successfully plated through an electroless plating process. It was found that the required Pd dose for Cu plating to occur is on the order of 3 x 10(15) cm-2 when the implantation was performed with a 20 kV extraction voltage. Taking advantage of the large pulsed ion current capability (up to 1 A) of the MEVVA ion source, the needed Pd dose for seeding was achieved in minutes. With direct Pd implantation, an intermediate activation step using PdCl2 solution can be eliminated. The Cu plating rate was not a sensitive function of temperature and no incubation period was found in our experiments. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP QIAN, XY (reprint author), UNIV CALIF BERKELEY,DEPT ELECT ENGN & COMP SCI,PLASMA ASSISTED MAT PROC LAB,BERKELEY,CA 94720, USA. RI Yu, Kin Man/J-1399-2012 OI Yu, Kin Man/0000-0003-1350-9642 NR 11 TC 10 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 55 IS 1-4 BP 893 EP 897 DI 10.1016/0168-583X(91)96302-2 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FN795 UT WOS:A1991FN79500180 ER PT J AU MACEK, JH AF MACEK, JH TI MECHANISMS FOR SECONDARY-ELECTRON PRODUCTION IN ION ATOM COLLISIONS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT JOINT US/JAPAN SEMINAR ON DYNAMICAL EXCITATION BY EXOTIC AND HIGHLY CHARGED IONS CY JUN 18-22, 1990 CL ANCHORAGE, AK ID DIFFERENTIAL CROSS-SECTIONS; CHARGE-TRANSFER; ANGULAR-DISTRIBUTION; IONIZATION; CONTINUUM; EXCHANGE; HELIUM AB Electron angular distributions provide a sensitive probe of ionization mechanisms in ion-atom collisions. At high energy, two broad classes of mechanisms, namely, single collision and double collision mechanisms, operate. The former produce electrons in the binary encounter peak while the latter are pertinent everywhere else in the electron energy and angular distributions. Low energy electrons, cusp electrons, and ridge electrons all manifest some aspects of double collision mechanisms. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN. RP MACEK, JH (reprint author), UNIV TENNESSEE,KNOXVILLE,TN 37996, 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 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 53 IS 4 BP 416 EP 420 DI 10.1016/0168-583X(91)95418-D PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FP552 UT WOS:A1991FP55200011 ER PT J AU TANIS, JA GRAHAM, WG BERKNER, KH BERNSTEIN, EM CLARK, MW FEINBERG, B MCMAHAN, MA MORGAN, TJ RATHBUN, W SCHLACHTER, AS AF TANIS, JA GRAHAM, WG BERKNER, KH BERNSTEIN, EM CLARK, MW FEINBERG, B MCMAHAN, MA MORGAN, TJ RATHBUN, W SCHLACHTER, AS TI RESONANT TRANSFER EXCITATION IN U-89 + C AND U-90 + H-2 COLLISIONS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT JOINT US/JAPAN SEMINAR ON DYNAMICAL EXCITATION BY EXOTIC AND HIGHLY CHARGED IONS CY JUN 18-22, 1990 CL ANCHORAGE, AK ID RELATIVISTIC HEAVY-IONS; ATOMIC-COLLISIONS; ELECTRON-CAPTURE; LIGHT TARGETS; URANIUM IONS AB Resonant transfer excitation (RTE), which occurs when electron transfer (capture) is accompanied by projectile excitation in a single-collision event, has been investigated for relativistic uranium projectiles colliding with carbon foils and molecular hydrogen. The RTE process is mediated by the electron-electron interaction, and is analogous to dielectronic recombination (DR). As such, the present results provide a test of relativistic DR theory and, for the H-2 target, show that RTE can contribute significantly to total single-electron capture in very high velocity collisions. C1 QUEENS UNIV BELFAST,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. WESLEYAN UNIV,MIDDLETOWN,CT 06457. RP TANIS, JA (reprint author), WESTERN MICHIGAN UNIV,KALAMAZOO,MI 49008, USA. OI Graham, William/0000-0003-2759-4657 NR 18 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 53 IS 4 BP 442 EP 447 DI 10.1016/0168-583X(91)95423-B PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FP552 UT WOS:A1991FP55200016 ER PT J AU SCHLACHTER, AS ROBINSON, AL AF SCHLACHTER, AS ROBINSON, AL TI THE ADVANCED LIGHT-SOURCE AT LAWRENCE-BERKELEY-LABORATORY - A NEW TOOL FOR RESEARCH IN ATOMIC PHYSICS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT JOINT US/JAPAN SEMINAR ON DYNAMICAL EXCITATION BY EXOTIC AND HIGHLY CHARGED IONS CY JUN 18-22, 1990 CL ANCHORAGE, AK ID SYNCHROTRON RADIATION; EXCITATION AB The Advanced Light Source, a third-generation national synchrotron-radiation facility now under construction at the Lawrence Berkeley Laboratory, is scheduled to begin serving qualified users across a broad spectrum of research areas in the spring of 1993. Based on a low-emittance electron storage ring optimized to operate at 1.5 GeV, the ALS will have 10 long straight sections available for insertion devices (undulators and wigglers) and 24 high-quality bend-magnet ports. The short pulse width (30-50 ps) will be ideal for time-resolved measurements. Undulators will generate high-brightness partially coherent soft X-ray and ultraviolet (XUV) radiation from below 10 eV to above 2 keV; this radiation is plane polarized. Wigglers and bend magnets will extend the spectrum by generating high fluxes of X-rays to photon energies above 10 keV. The ALS will have an extensive research program in which XUV radiation is used to study matter in all its varied gaseous, liquid, and solid forms. The high brightness will open new areas of research in the materials sciences, such as spatially resolved spectroscopy (spectromicroscopy), and in biology, such as X-ray microscopy with element-specific sensitivity; the high flux will allow measurements in atomic physics and chemistry to be made with tenuous gas-phase targets. Technological applications could include lithography and nano-fabrication. RP SCHLACHTER, AS (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV ADV LIGHT SOURCE ACCELERATOR & FUS RES,BERKELEY,CA 94720, USA. NR 12 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD APR PY 1991 VL 53 IS 4 BP 512 EP 517 DI 10.1016/0168-583X(91)95431-C PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA FP552 UT WOS:A1991FP55200024 ER PT J AU BALTZ, AJ AF BALTZ, AJ TI TRANSVERSE ENERGY-PRODUCTION AT AGS ENERGIES - SINGLE OR MULTIPLE-SCATTERING SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID P+A COLLISIONS; 14.5 GEV/C; EMISSION; NUCLEON; O+A AB Transverse energy production in nucleus-nucleus collisions is considered in a Glauber model involving the convolution of nucleon-nucleon scattering. A multiple scattering model with energy production degraded as a function of the number of nucleon interactions fails to reproduce consistently 14.5 GeV/A O-16 data on Au and Cu targets. On the other hand, a single scattering model, in which each nucleon can interact at most once, is able to reproduce successfully AGS proton, O-16 and Si-28 data on various targets. RP BALTZ, AJ (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 7 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 APR 1 PY 1991 VL 525 BP C639 EP C643 PG 5 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200091 ER PT J AU CHRISTIE, W OLSON, D ABBOT, T BEAVIS, D BRADY, P FUNG, S KANG, J KEANE, D LIU, Y MUELLER, W ROMERO, J SYMONS, J TULL, C WIEMAN, H AF CHRISTIE, W OLSON, D ABBOT, T BEAVIS, D BRADY, P FUNG, S KANG, J KEANE, D LIU, Y MUELLER, W ROMERO, J SYMONS, J TULL, C WIEMAN, H TI PION CORRELATIONS IN RELATIVISTIC HEAVY-ION COLLISIONS AT THE BEVALAC SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID NUCLEAR COLLISIONS; ABRASION-ABLATION; INTERFEROMETRY; DISTRIBUTIONS AB Presented here is a brief summary of the setup, analysis, and results of a pion correlation experiment performed using the Heavy Ion Spectrometer System (HISS) at the Lawrence Berkeley Laboratory BEVALAC. The beams and targets used were 1.8 GeV/nucleon Argon on KCl and Lanthanum targets, and 1.2 GeV/nucleon Xenon on a Lanthanum target. C1 HARBIN INST,HARBIN,PEOPLES R CHINA. UNIV COSTA RICA,SAN JOSE,COSTA RICA. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. KENT STATE UNIV,KENT,OH 44242. RP CHRISTIE, W (reprint author), UNIV CALIF DAVIS,DAVIS,CA 95616, USA. NR 16 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 APR 1 PY 1991 VL 525 BP C649 EP C652 PG 4 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200093 ER PT J AU GREENE, SV HEMMICK, TK MITCHELL, JT SHIVAKUMAR, B FISCHER, J LISSAUER, D LUDLAM, T MAKOWIECKI, D OBRIEN, E RADEKA, V RESCIA, S ROGERS, L SMITH, GC STEPHANI, D YU, B AF GREENE, SV HEMMICK, TK MITCHELL, JT SHIVAKUMAR, B FISCHER, J LISSAUER, D LUDLAM, T MAKOWIECKI, D OBRIEN, E RADEKA, V RESCIA, S ROGERS, L SMITH, GC STEPHANI, D YU, B TI A HIGH-RESOLUTION TRACKING SYSTEM FOR THE INVESTIGATION OF RELATIVISTIC HEAVY-ION COLLISIONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT AB We describe herein a set of tracking detectors used in the identification of particles produced in relativistic nucleus-nucleus collisions. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP GREENE, SV (reprint author), YALE UNIV,NEW HAVEN,CT 06511, USA. RI Rescia, Sergio/D-8604-2011 OI Rescia, Sergio/0000-0003-2411-8903 NR 2 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 APR 1 PY 1991 VL 525 BP C609 EP C612 PG 4 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200086 ER PT J AU JACAK, B AF JACAK, B TI TRANSVERSE-MOMENTUM DISTRIBUTIONS OF HADRONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID INTERSECTING STORAGE-RINGS; QUARK-GLUON PLASMA; NUCLEAR COLLISIONS; PARTICLE-PRODUCTION; CERN; ENERGY RP JACAK, B (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544, USA. NR 37 TC 10 Z9 10 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 APR 1 PY 1991 VL 525 BP C77 EP C89 PG 13 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200007 ER PT J AU LOVE, WA BONNER, BE AF LOVE, WA BONNER, BE TI SILICON ION INTERACTIONS MEASURED IN THE E-810 TPC AT THE AGS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 3 TC 10 Z9 10 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 APR 1 PY 1991 VL 525 BP C601 EP C604 PG 4 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200084 ER PT J AU MATIS, HS PUGH, HG ALBA, GP BLAND, RW CALLOWAY, DH DICKSON, S HODGES, CL PALMER, TL STRICKER, DA JOHNSON, RT SHAW, GL SLANSKY, R AF MATIS, HS PUGH, HG ALBA, GP BLAND, RW CALLOWAY, DH DICKSON, S HODGES, CL PALMER, TL STRICKER, DA JOHNSON, RT SHAW, GL SLANSKY, R TI SEARCH FOR FREE QUARKS PRODUCED IN ULTRA-RELATIVISTIC COLLISIONS AT BNL AND CERN SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID HEAVY-ION COLLISIONS; FRACTIONAL CHARGES; NUCLEON AB A high intensity experiment was performed to search for free quarks at BNL and CERN using ultra-relativistic beams. The experiment was designed to trap quarks in a Hg target or liquid Ar tank. No free quark candidate was found. Limits from 10(-7) to 10(-10) quarks per incident ion are reported. C1 SAN FRANCISCO STATE UNIV,DEPT PHYS,SAN FRANCISCO,CA 94132. UNIV CALIF IRVINE,DEPT PHYS,IRVINE,CA 92717. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. RP MATIS, HS (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 11 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 APR 1 PY 1991 VL 525 BP C513 EP C517 PG 5 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200066 ER PT J AU MIAKE, Y AF MIAKE, Y TI PARTICLE-PRODUCTION IN SI + A AND P + A COLLISIONS AT 14.6 A.GEV/C SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; STRANGENESS PRODUCTION; NUCLEAR COLLISIONS AB Particle production (pi +/-, K +/-, p) has been measured in both Si + A and p + A collisions at 14.6 A.GeV/c. Comparisons of m(t) and dn/dy distributions between p + Be, p + Au and central Si + Au collisions are discussed. RP MIAKE, Y (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. RI Cumming, James/I-3358-2013; Hayano, Ryugo/F-7889-2012 OI Cumming, James/0000-0001-6930-0958; Hayano, Ryugo/0000-0002-1214-7806 NR 22 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 APR 1 PY 1991 VL 525 BP C231 EP C236 PG 6 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200022 ER PT J AU MOSS, JM AF MOSS, JM TI J-PSI AND PSI' PRODUCTION WITH 800 GEV PROTONS SO NUCLEAR PHYSICS A LA English DT Article ID TRANSVERSE-MOMENTUM DEPENDENCE; NUCLEUS-NUCLEUS COLLISIONS; HADRON-PRODUCTION; J/PSI-PRODUCTION; CHARM PRODUCTION; CROSS-SECTION; A-DEPENDENCE; SUPPRESSION; QCD AB The yields of J/psi and psi' vector meson states have been measured for 800 GeV protons incident on deuterium, carbon, calcium, iron and tungsten targets. A depletion of the yield per nucleon from heavy nuclei is observed for both J/psi and psi' production. This depletion exhibits a strong dependence on x(F) and p(t). RP UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87544 USA. NR 26 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 EI 1873-1554 J9 NUCL PHYS A JI Nucl. Phys. A PD APR 1 PY 1991 VL 525 BP C285 EP C292 PG 8 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200027 ER PT J AU MURRAY, M AF MURRAY, M TI INTERMITTENCY IN HEAVY-ION COLLISIONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID HIGH-ENERGY; NUCLEON AB This paper describes a study of multiplicity and transverse energy fluctuations using factorial moments for sulphur collisions with silver-bromide emulsion and platinum targets at 200 GeV/A. The data were taken with the HELIOS experiment at CERN. Bialas and Peschanski [1] predicted a power law dependence of the moments on the rapidity bin size if the fluctuations are invariant over a range of scales. This pattern is known as intermittency in the theory of turbulence, and indicates a fractal structure. Fluctuations were studied for a range of pseudorapidity scales using scaled factorial moments. Correlated fluctuations were studied using correlated scaled factorial moments. For peripheral collisions the data are weakly intermittent and consistent with a simple cascading mechanism, the alpha model. For central collisions no clear signal of intermittency was seen. RP MURRAY, M (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, 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 APR 1 PY 1991 VL 525 BP C545 EP C550 PG 6 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200073 ER PT J AU OZAKI, S AF OZAKI, S TI THE RELATIVISTIC HEAVY-ION COLLIDER AT BROOKHAVEN SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT AB An overview of the RHIC project, recent project status, and R&D progress on its superconducting magnets are presented. Also discussed are the current construction and experimental programming plans at RHIC, including an announcement for a call for letters of intent for experiments. RP OZAKI, S (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 0 TC 10 Z9 10 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 APR 1 PY 1991 VL 525 BP C125 EP C132 PG 8 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200012 ER PT J AU PADULA, SS GYULASSY, M AF PADULA, SS GYULASSY, M TI INTERFEROMETRIC PROBES OF ULTRARELATIVISTIC NUCLEAR COLLISIONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID HEAVY-ION COLLISIONS; PION INTERFEROMETRY; O+AU AB We suggest that pion and kaon interferometry are complementary probes that help differentiate hadronic resonance gas from plasma dynamical models. We also discuss how interferometry could be used to test the presence of resonances at AGS energies. Finally, we study the A dependence of interferometry in the resonance model at 200 A GeV. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. RP PADULA, SS (reprint author), UNIV NACL ESTADUAL SAO PAULO,INST FIS TEOR,RUA PAMPLONA 145,BR-01405 SAO PAULO,BRAZIL. RI Padula, Sandra /G-3560-2012 NR 14 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 APR 1 PY 1991 VL 525 BP C339 EP C343 PG 5 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200035 ER PT J AU PAIC, G BACHLER, J BOCK, R DOMINIK, W ESCHKE, J HECK, W HOFFMANN, M HERNANDEZBENAVIDES, T KARABARBOUNIS, A LEVINE, M LJUBICIC, A MONGELLI, M NAPPI, E PANAGIOTOU, A PETRIDIS, A POSA, A SANDOVAL, A SCHMOETTEN, E SPINELLI, P STOCK, R VASILEIADIS, G VASSILIOU, M VRANIC, D ZAGANIDIS, N AF PAIC, G BACHLER, J BOCK, R DOMINIK, W ESCHKE, J HECK, W HOFFMANN, M HERNANDEZBENAVIDES, T KARABARBOUNIS, A LEVINE, M LJUBICIC, A MONGELLI, M NAPPI, E PANAGIOTOU, A PETRIDIS, A POSA, A SANDOVAL, A SCHMOETTEN, E SPINELLI, P STOCK, R VASILEIADIS, G VASSILIOU, M VRANIC, D ZAGANIDIS, N TI A 50 X 50 CM2 RICH DETECTOR PROTOTYPE FOR ULTRARELATIVISTIC HEAVY-ION COLLISIONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT AB A 50 x 50 cm2 RICH detector was tested with hadron beams of 200 GeV/c to determine the resolution and efficiency of the system. Single photon detection has been achieved with a multistep avalanche chamber in conjunction with a CCD camera equipped with a 35 mm f/1.4 lens coupled to a two stage image intensifier. The results show that for the number of photons detected with the present setup and the geometry used in proximity focusing a standard deviation of 7.5 mrad per event has been achieved for the reconstruction of the Cherenkov angle. C1 UNIV ATHENS,ATHENS,GREECE. IST NAZL FIS NUCL,BARI,ITALY. BROOKHAVEN NATL LAB,UPTON,NY 11973. CERN,CH-1211 GENEVA 23,SWITZERLAND. UNIV FRANKFURT,W-6000 FRANKFURT,GERMANY. UNIV FREIBURG,W-7800 FREIBURG,GERMANY. RUDJER BOSKOVIC INST,YU-41001 ZAGREB,YUGOSLAVIA. RP PAIC, G (reprint author), GESELL SCHWERIONENFORSCH GMBH,W-6100 DARMSTADT 11,GERMANY. NR 1 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 APR 1 PY 1991 VL 525 BP C605 EP C608 PG 4 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200085 ER PT J AU PISARSKI, RD AF PISARSKI, RD TI RESUMMATION AND THE GLUON DAMPING RATE IN HOT QCD SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID FINITE-TEMPERATURE; GAUGE-THEORIES; PLASMA-OSCILLATIONS; LINEAR RESPONSE; CURVED SPACE; FIELD-THEORY; MATTER; PROPAGATOR; INSTABILITY; AMPLITUDES AB At high temperature a consistent perturbative expansion requires the resummation of an infinite subset of loop corrections into an effective expansion. This effective expansion is used to compute the gluon damping rate at leading order. RP PISARSKI, RD (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 70 TC 31 Z9 31 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 APR 1 PY 1991 VL 525 BP C175 EP C188 PG 14 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200017 ER PT J AU RAWOOLSULLIVAN, MW SHOEMAKER, J SIMON, J SULLIVAN, JP WOLF, KL ARCHULETA, A BARASCH, G BENNETT, P BERTINI, D BOISSEVAIN, J CHAMPS, L DOUNG, B FOX, D GAVRON, A HARDEKOPF, D HOLTZSCHEITER, K JACAK, B JOHNSON, S JONES, B LOPEZ, T RUMINER, R SONDHEIM, W SUNIER, J VANHECKE, H WOLF, B AF RAWOOLSULLIVAN, MW SHOEMAKER, J SIMON, J SULLIVAN, JP WOLF, KL ARCHULETA, A BARASCH, G BENNETT, P BERTINI, D BOISSEVAIN, J CHAMPS, L DOUNG, B FOX, D GAVRON, A HARDEKOPF, D HOLTZSCHEITER, K JACAK, B JOHNSON, S JONES, B LOPEZ, T RUMINER, R SONDHEIM, W SUNIER, J VANHECKE, H WOLF, B TI RESPONSE OF A SAMPLING CALORIMETER TO LOW-ENERGY PARTICLES SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544. TEXAS A&M UNIV SYST,INST CYCLOTRON,COLLEGE STN,TX 77843. NR 1 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 APR 1 PY 1991 VL 525 BP C677 EP C680 PG 4 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200100 ER PT J AU SEIDL, PA AF SEIDL, PA TI LOW-MASS DILEPTONS IN PA AND AA COLLISIONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID NUCLEON-NUCLEON COLLISIONS; DIELECTRON PRODUCTION; E+E PRODUCTION; BE COLLISIONS; RADIATION; EMISSION; LEPTON; MATTER AB The low-mass (M < 1 GeV) e+e- continuum has not yet been understood even though the large yield has been documented in a number of high-energy hadron-nucleon and hadron-nucleus experiments. In heavy-ion collisions, effects resulting from the presence of the excited nuclear medium are expected. An understanding of dilepton production at excitation energies in the few-GeV range will aid in the interpretation of dilepton production at ultra-relativistic energies, where it may be a probe of the quark-gluon plasma. The objective of the Dilepton Spectrometer (DLS) collaboration at the BEVALAC is to study the production of e+e- pairs in nucleon-nucleon, proton-nucleus and nucleus-nucleus collisions at bombarding kinetic energies between 1 and 5 A. GeV. The transverse momentum distributions, the mass dependence, and the excitation function of dilepton production give information about the production mechanisms. RP SEIDL, PA (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 27 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 APR 1 PY 1991 VL 525 BP C299 EP C304 PG 6 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200029 ER PT J AU SHURYAK, EV AF SHURYAK, EV TI PHYSICS OF HOT HADRONIC MATTER AND QUARK-GLUON PLASMA SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS : QUARK MATTER 90 CY MAY 07-11, 1990 CL MENTON, FRANCE SP CNRS, CEA, SOC FRANCAISE PHYS, COLL FRANCE, MINIST RECH & TECHNOL FRANCE, CONSEIL REG PROVENCE COTE AZUR, ENERTEC, HERAEUS, LCCROY RES SYST, MERCK CLEVENOT ID NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; TRANSVERSE-MOMENTUM DEPENDENCE; J-PSI-SUPPRESSION; INSTANTON LIQUID; QUANTITATIVE THEORY; FINITE-TEMPERATURE; QUANTUM CHROMODYNAMICS; J/PSI-SUPPRESSION; 4 GEV/C AB This Introductory talk contains a brief review of the current status of theoretical and experimental activities related to physics of superdense matter. In particular, we discuss latest lattice results on the phase transition, recent progress in chiral symmetry physics based on the theory of interacting instantons, news in the theory of QGP and of hot hadronic matter, mean pt and collective flow, the shape of pt distribution, strangeness production, J/psi suppression and phi-enhancement, two puzzles connected with soft pion and soft photon enhancements, and some other "ultrasoft" phenomena. RP SHURYAK, EV (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 87 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 APR 1 PY 1991 VL 525 BP C3 EP C21 PG 19 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200002 ER PT J AU TANNENBAUM, MJ AF TANNENBAUM, MJ TI TRANSVERSE ENERGY AND MULTIPLICITY DISTRIBUTIONS OF P-P AND A+A INTERACTIONS SO NUCLEAR PHYSICS A LA English DT Article ID NUCLEUS COLLISIONS AB Data from AGS-E802 have been presented at the recent HIPAGS workshop at BNL1, published in journals 2,3,4 and in conference proceedings (St. Malo 5, Moriond 6), to which the reader is referred. Two results are mentioned here. The Lead Glass distribution dE(T)0/d-eta from central O + Au collisions 5 can be compared to the spectrometer dn(pi-)/dy from central Si + Au collisions4. The agreement of the two distributions is excellent and confirms that the estimated 5,6 position and value of the maximum in the distribution eta(max, dE(T)/d-eta)max, and the width DELTA-eta-FW H M, from the PbGl data are reasonable, and that nothing exceptional is occurring outside of the PbGl acceptance. Additionally, these data, and previous measurements of pseudorapidity distributions of multiplicity and Transverse Energy at both the AGS and CERN are analyzed in an acceptance-independent and model-independent method, with the conclusion that simple considerations of nuclear geometry do not provide an explanation of the different square-root s N N dependences observed in O-16 + Au and p-p reactions. RP BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. NR 18 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 EI 1873-1554 J9 NUCL PHYS A JI Nucl. Phys. A PD APR 1 PY 1991 VL 525 BP C681 EP C684 PG 4 WC Physics, Nuclear SC Physics GA FH892 UT WOS:A1991FH89200101 ER EF