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PT J
AU Phair, L
Beaulieu, L
Moretto, LG
Wozniak, GJ
AF Phair, L
Beaulieu, L
Moretto, LG
Wozniak, GJ
TI The reducible and thermal nature of nuclear multifragmentation.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 030-NUCL
BP U327
EP U327
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001060
ER
PT J
AU Philips, DR
Taylor, WA
Peterson, EJ
Zhuikov, B
Kokhanyuk, V
Konyakhin, N
Kitten, JJ
Ott, MA
Garcia, JG
Hamilton, VT
Jamriska, DJ
Valdez, FO
McCurdy, LM
Lowe, CE
Jacobson, LL
Heaton, RC
AF Philips, DR
Taylor, WA
Peterson, EJ
Zhuikov, B
Kokhanyuk, V
Konyakhin, N
Kitten, JJ
Ott, MA
Garcia, JG
Hamilton, VT
Jamriska, DJ
Valdez, FO
McCurdy, LM
Lowe, CE
Jacobson, LL
Heaton, RC
TI Production of strontium-82 for the cardiogen PET generator.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Russian Acad Sci, Inst Nucl Res, Moscow, Russia.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 015-IEC
BP U917
EP U917
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902694
ER
PT J
AU Phillips, DR
Brzezinski, MA
Hamilton, VT
Kudela, RM
AF Phillips, DR
Brzezinski, MA
Hamilton, VT
Kudela, RM
TI Silicon-32: Diatoms, the silicon cycle, and the climate.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, CST, Los Alamos, NM 87545 USA.
Univ Calif Santa Barbara, Dept Ecol Evolut & Marine Biol, Santa Barbara, CA 93106 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 074-NUCL
BP U339
EP U339
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001103
ER
PT J
AU Pohl, PI
Fisler, DK
Nenoff, TM
AF Pohl, PI
Fisler, DK
Nenoff, TM
TI Simulations of pore diffusion and adsorption in zeolites.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ New Mexico, Ctr Microengn Mat, Albuquerque, NM 87106 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 013-CATL
BP U282
EP U282
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100857
ER
PT J
AU Pomes, R
Hummer, G
AF Pomes, R
Hummer, G
TI Conformational isomerization of a proposed proton shuttle in cytochrome
c oxidase.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA.
Univ Helsinki, Dept Med Chem, Helsinki Bioenerget Grp, Helsinki 00014, Finland.
RI Hummer, Gerhard/A-2546-2013
OI Hummer, Gerhard/0000-0001-7768-746X
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 415-INOR
BP U123
EP U123
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000415
ER
PT J
AU Pomes, R
Schumaker, MF
AF Pomes, R
Schumaker, MF
TI Molecular mechanism, thermodynamics, and kinetics of proton
translocation in the gramicidin channel.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Washington State Univ, Dept Math, Pullman, WA 99164 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada.
Univ Montreal, Dept Chim, Montreal, PQ H3C 3J7, Canada.
RI Hummer, Gerhard/A-2546-2013
OI Hummer, Gerhard/0000-0001-7768-746X
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 195-COMP
BP U753
EP U753
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902220
ER
PT J
AU Pomes, R
Hummer, G
AF Pomes, R
Hummer, G
TI Structural fluctuations of cytochrome P-450cam in the nanosecond time
range.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA.
RI Hummer, Gerhard/A-2546-2013
OI Hummer, Gerhard/0000-0001-7768-746X
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 194-COMP
BP U753
EP U753
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902219
ER
PT J
AU Pomes, R
Eisenmesser, E
Post, CB
Roux, B
AF Pomes, R
Eisenmesser, E
Post, CB
Roux, B
TI Calculating excess chemical potentials in the fourth dimension.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada.
Univ Montreal, Dept Chim, Montreal, PQ H3C 3J7, Canada.
Purdue Univ, Dept Med Chem, W Lafayette, IN 47901 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 118-COMP
BP U718
EP U718
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902140
ER
PT J
AU Porter, MD
Kenseth, JR
O'Brien, JC
Jones, VW
Burgess, JD
Brush, RC
AF Porter, MD
Kenseth, JR
O'Brien, JC
Jones, VW
Burgess, JD
Brush, RC
TI Combined infrared spectroscopic and atomic force microscopic
investigation of immobilized antigenic arrays for immunoassays.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
US DOE, Ames Lab, Microanalyt Instrumentat Ctr, Ames, IA 50011 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 019-ANYL
BP U147
EP U147
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900368
ER
PT J
AU Price, RJ
Xu, DD
Jackson, WM
Ahmed, M
Peterka, DS
Suits, AG
AF Price, RJ
Xu, DD
Jackson, WM
Ahmed, M
Peterka, DS
Suits, AG
TI Photofragment imaging of ethane at Lyman alpha.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Davis, Dept Chem, Livermore, CA 95616 USA.
Ernest Orlando Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 433-PHYS
BP U785
EP U785
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002364
ER
PT J
AU Raebiger, JW
Laplaza, CE
Hausmann, DM
Mukerjee, S
Musgrave, KB
McNamara, J
Kates, SA
Hedman, B
Hodgson, KO
Holm, RH
AF Raebiger, JW
Laplaza, CE
Hausmann, DM
Mukerjee, S
Musgrave, KB
McNamara, J
Kates, SA
Hedman, B
Hodgson, KO
Holm, RH
TI Metallopeptides related to the active sites of enzymes containing Fe4S4
clusters
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA.
PerSept Biosyst Inc, Framingham, MA 01701 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 470-INOR
BP U141
EP U141
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000470
ER
PT J
AU Rahimian, K
Loy, DA
AF Rahimian, K
Loy, DA
TI Arylene-bridged 2,2,5,5-tetramethyl-2,5-disila-1-oxacyclopentanes as
precursors to non-shrinking polysiloxanes. A new route to sol-gel type
polymers.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RI Loy, Douglas/D-4847-2009
OI Loy, Douglas/0000-0001-7635-9958
NR 0
TC 0
Z9 0
U1 1
U2 3
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 076-POLY
BP U23
EP U23
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100076
ER
PT J
AU Rajh, T
Thurnauer, MC
Thiyagarajan, P
Tiede, DM
AF Rajh, T
Thurnauer, MC
Thiyagarajan, P
Tiede, DM
TI Structural characterization of self organized TiO2 nanoclusters studied
by small angle neutron scattering
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 156-COLL
BP U628
EP U628
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234901841
ER
PT J
AU Ramsey, JM
Jacobson, SC
Kutter, JP
AF Ramsey, JM
Jacobson, SC
Kutter, JP
TI Microchip separations: Small and fast.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 221-ANYL
BP U203
EP U203
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900561
ER
PT J
AU Ramsey, JM
AF Ramsey, JM
TI Microdomain chemical analysis.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 190-ANYL
BP U195
EP U195
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900533
ER
PT J
AU Rao, LF
Zanonato, P
Di Bernardo, P
AF Rao, LF
Zanonato, P
Di Bernardo, P
TI Thermodynamics of europium(III) complexation with alkyl-substituted
diamides in organic solvents.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Pacific NW Lab, Richland, WA 99352 USA.
Univ Padua, Dipartimento CIMA, I-35131 Padua, Italy.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 071-NUCL
BP U338
EP U338
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001100
ER
PT J
AU Rege, MA
Bereded-Samuel, Y
Petersen, JN
Yonge, DR
Johnstone, DL
Apel, WA
AF Rege, MA
Bereded-Samuel, Y
Petersen, JN
Yonge, DR
Johnstone, DL
Apel, WA
TI Biological reduction of selenite in a packed bed bioreactor using BioSep
beads.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Washington State Univ, Ctr Multiphase Environm Res, Pullman, WA 99164 USA.
Idaho Natl Engn & Environm Lab, Dept Biotechnol, Idaho Falls, ID 83415 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 105-IEC
BP U943
EP U943
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902783
ER
PT J
AU Rials, TG
Kelley, SS
AF Rials, TG
Kelley, SS
TI Morphology and properties of modified cellulose ester membranes.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 US Forest Serv, So Res Stn, Pineville, LA USA.
Natl Renewable Energy Lab, Golden, CO USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 059-CELL
BP U347
EP U347
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900975
ER
PT J
AU Rice, RJP
Xu, DD
Jackson, WM
Ahmed, M
Peterka, DS
Suits, AG
AF Rice, RJP
Xu, DD
Jackson, WM
Ahmed, M
Peterka, DS
Suits, AG
TI Imaging studies of the photolysis of simple saturated and unsaturated
hydrocarbons at Lyman alpha.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Davis, Dept Chem, Livermore, CA 95616 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
NR 2
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 292-PHYS
BP U745
EP U745
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002232
ER
PT J
AU Ritter, JA
Ebner, AD
Navratil, JD
AF Ritter, JA
Ebner, AD
Navratil, JD
TI Nanolevel high gradient magnetic separation for wastewater treatment.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ S Carolina, Dept Chem Engn, Columbia, SC 29208 USA.
Lockheed Martin Idaho Technol Co, Idaho Falls, ID 83415 USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 086-IEC
BP U937
EP U938
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902764
ER
PT J
AU Roe, DC
Kick, EK
Skillman, AG
Liu, G
Ellman, JA
AF Roe, DC
Kick, EK
Skillman, AG
Liu, G
Ellman, JA
TI Combining structure-based drug design with combinatorial chemistry.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Sandia Natl Labs, Livermore, CA 94551 USA.
RI Ellman, Jonathan/C-7732-2013
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 011-COMP
BP U688
EP U688
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902033
ER
PT J
AU Romanach, CA
Ventriere, DL
Quirke, JME
Van Berkel, GJ
AF Romanach, CA
Ventriere, DL
Quirke, JME
Van Berkel, GJ
TI Ferrocene-based derivatizing reagents. A flexible tool for selective
detection of alcohols in complex mixtures
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Florida Int Univ, Dept Chem, Miami, FL 33199 USA.
Oak Ridge Natl Lab, Div Analyt Sci, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 025-PRES
BP U215
EP U215
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100654
ER
PT J
AU Rotmensch, J
Whitlock, JL
Dietz, ML
Hines, JJ
Reba, RC
Horwitz, EP
Harper, PV
AF Rotmensch, J
Whitlock, JL
Dietz, ML
Hines, JJ
Reba, RC
Horwitz, EP
Harper, PV
TI Development of 212-BiOCl as a new therapeutic modality against
microscopic carcinoma.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Chicago, Chicago, IL 60637 USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
NR 0
TC 3
Z9 3
U1 1
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 047-IEC
BP U926
EP U926
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902726
ER
PT J
AU Rotmensch, J
Whitlock, JL
Dietz, ML
Hines, JJ
Reba, RC
Horwitz, EP
Harper, PV
AF Rotmensch, J
Whitlock, JL
Dietz, ML
Hines, JJ
Reba, RC
Horwitz, EP
Harper, PV
TI The clinical significance of radionuclide therapy for the treatment of
microscopic carcinoma: Biology to chemistry.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Chicago, Chicago, IL 60637 USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 045-IEC
BP U925
EP U926
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902724
ER
PT J
AU Rundberg, RS
Fowler, MM
Miller, GG
Wilhelmy, JB
AF Rundberg, RS
Fowler, MM
Miller, GG
Wilhelmy, JB
TI A search for the thorium-229 nuclear isomer.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 010-NUCL
BP U321
EP U321
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001040
ER
PT J
AU Russo, RE
AF Russo, RE
TI Everything I ever needed to know, I learned in graduate school.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 194-ANYL
BP U196
EP U196
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900534
ER
PT J
AU Sachleben, RA
Urvoas, A
Bryan, JC
AF Sachleben, RA
Urvoas, A
Bryan, JC
TI Investigating the unique conformational behavior of dehydroxylated
calix[4]arenes.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 051-ORGN
BP U366
EP U366
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001177
ER
PT J
AU Safron, SA
Li, JA
Akhadov, EA
Trelenberg, TW
Skofronick, JG
Banerjee, RL
Boatner, LA
AF Safron, SA
Li, JA
Akhadov, EA
Trelenberg, TW
Skofronick, JG
Banerjee, RL
Boatner, LA
TI Thermal variation of tie structure and lattice dynamics of KTaO3 (001).
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Florida State Univ, Dept Chem, MARTECH, Tallahassee, FL 32306 USA.
Florida State Univ, Dept Phys, MARTECH, Tallahassee, FL 32306 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Univ Moncton, Dept Phys, Moncton, NB E1A 3E9, Canada.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 204-PHYS
BP U719
EP U719
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002146
ER
PT J
AU Saiz, E
Tomsia, AP
Foppiano, S
Cannon, RM
AF Saiz, E
Tomsia, AP
Foppiano, S
Cannon, RM
TI Effects of triple line ridge formation on macroscopic contact angles and
liquid spreading rates
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 329-COLL
BP U679
EP U679
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902013
ER
PT J
AU Salazar, KV
Pattillo, SG
Moss, TS
Trkula, M
AF Salazar, KV
Pattillo, SG
Moss, TS
Trkula, M
TI Preparation of the useful OMCVD precursors: Mg(C5H5)(2), Be(C5H5)(2),
and Sr(C11H19O2)(2)
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 001-TECH
BP U542
EP U542
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234901562
ER
PT J
AU Salsbury, FR
AF Salsbury, FR
TI Computation of NMR parameters using magnetic field density functional
theory.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI Salsbury, Freddie/A-5923-2008
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 167-COMP
BP U745
EP U745
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902192
ER
PT J
AU Sasaki, DY
AF Sasaki, DY
TI Recognition sites on fluorescent lipid bilayers for the optical
detection of metal ions.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 126-PHYS
BP U695
EP U695
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002069
ER
PT J
AU Schake, AR
Burns, CJ
Morgan, AN
Warner, BP
AF Schake, AR
Burns, CJ
Morgan, AN
Warner, BP
TI Chemical reactions of organoplutonium and organoneptunium compounds.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 205-INOR
BP U60
EP U60
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000206
ER
PT J
AU Schatz, T
Cook, AR
Meisel, D
AF Schatz, T
Cook, AR
Meisel, D
TI Interfacial charge transfer in irradiated suspensions. Implications to
nuclear waste.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 2
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 091-NUCL
BP U344
EP U344
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001120
ER
PT J
AU Schreckenbach, G
AF Schreckenbach, G
TI Density-functional calculations of NMR chemical shifts in actinide
compounds.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 165-COMP
BP U744
EP U745
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902190
ER
PT J
AU Schreckenbach, G
AF Schreckenbach, G
TI The Fe-57 NMR shielding in ferrocene revisited. A density-functional
study of shielding mechanisms and the influence of the
exchange-correlation functional.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 144-COMP
BP U737
EP U737
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902166
ER
PT J
AU Seaborg, GT
AF Seaborg, GT
TI The role of basic research in society.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 006-COMSCI
BP U355
EP U355
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235101077
ER
PT J
AU Seaman, JC
Bertsch, PM
AF Seaman, JC
Bertsch, PM
TI Retardation of anionic groundwater tracers in highly weathered geologic
systems.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Georgia, Savannah River Ecol Lab, Adv Analyt Ctr Environm Sci, Aiken, SC 29802 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 091-ENVR
BP U786
EP U786
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902311
ER
PT J
AU Sebesta, F
Navratil, JD
AF Sebesta, F
Navratil, JD
TI New types of magnetic adsorbents and magnetic inorganic ion-exchangers.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Czech Tech Univ, Prague 11519 1, Czech Republic.
Lockheed Martin Idaho Technol Co, Idaho Falls, ID 83415 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 069-IEC
BP U932
EP U933
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902748
ER
PT J
AU Shafiq, FA
Cabelli, DE
Szalda, DJ
Creutz, C
Bullock, RM
AF Shafiq, FA
Cabelli, DE
Szalda, DJ
Creutz, C
Bullock, RM
TI Pulse radiolysis studies of water-soluble transition metal hydrides
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 086-INOR
BP U25
EP U25
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000087
ER
PT J
AU Shaltout, RM
Loy, DA
AF Shaltout, RM
Loy, DA
TI Diels-Alder reaction of cyclopentadiene with ethoxysilyl substituted
dienophiles.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Sandia Natl Labs, Encapsulants & Foams Dept, Albuquerque, NM 87185 USA.
RI Loy, Douglas/D-4847-2009
OI Loy, Douglas/0000-0001-7635-9958
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 245-INOR
BP U72
EP U72
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000246
ER
PT J
AU Shelnutt, JA
Jia, SL
Nenoff, TM
Muzzi, CM
Medforth, CJ
Smith, KM
AF Shelnutt, JA
Jia, SL
Nenoff, TM
Muzzi, CM
Medforth, CJ
Smith, KM
TI Computational design of chiral catalysts based on novel nonplanar
chiroporphyrins.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Sandia Natl Labs, Mat Theory & Computat Dept, Albuquerque, NM 87185 USA.
Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA.
Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
RI Shelnutt, John/A-9987-2009; Smith, Kevin/G-1453-2011
OI Shelnutt, John/0000-0001-7368-582X; Smith, Kevin/0000-0002-6736-4779
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 021-CATL
BP U284
EP U284
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100865
ER
PT J
AU Shim, H
Hurt, R
Yang, N
AF Shim, H
Hurt, R
Yang, N
TI Characterization of coal and char microstructure by 002 LF lattice
fringe imaging.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Brown Univ, Div Engn, Providence, RI 02912 USA.
Sandia Natl Labs, Livermore, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 127-FUEL
BP U871
EP U872
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902567
ER
PT J
AU Shin, YS
Dai, S
Barnes, CE
Xue, BZ
AF Shin, YS
Dai, S
Barnes, CE
Xue, BZ
TI Comparison of uranyl adsorption capacity on various porous sorbents.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA.
RI Dai, Sheng/K-8411-2015
OI Dai, Sheng/0000-0002-8046-3931
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 195-INOR
BP U57
EP U58
PN 2
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000196
ER
PT J
AU Shvartsburg, AA
Ho, KM
Pan, BC
Lu, ZY
Wang, CZ
Wacker, JG
Liu, B
Jarrold, MF
AF Shvartsburg, AA
Ho, KM
Pan, BC
Lu, ZY
Wang, CZ
Wacker, JG
Liu, B
Jarrold, MF
TI Structural characterization of the teensize semiconductor clusters by
combination of theory and experiment.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
US DOE, Ames Lab, Ames, IA 50011 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 351-PHYS
BP U763
EP U763
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002291
ER
PT J
AU Silks, LA
Wu, RL
Orji, CC
AF Silks, LA
Wu, RL
Orji, CC
TI Aldol reactions of acylated chiral selones.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Biosci & Biotechnol Grp, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 497-ORGN
BP U515
EP U515
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001622
ER
PT J
AU Song, XD
Nolan, J
Swanson, B
AF Song, XD
Nolan, J
Swanson, B
TI Optical signal transduction triggered by protein-ligand binding:
Detection of toxins using multivalent receptors.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87544 USA.
Univ Calif Los Alamos Natl Lab, Div Life Sci, Los Alamos, NM 87544 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 122-PHYS
BP U694
EP U694
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002065
ER
PT J
AU Soong, Y
Blackwell, AG
Harke, FW
Ladner, EP
Zarochak, MF
AF Soong, Y
Blackwell, AG
Harke, FW
Ladner, EP
Zarochak, MF
TI Ultrasonic characterization of slurries in bubble column reactors
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 US Dept Energy, Fed Energy Technol Ctr, Pittsburgh, PA 15236 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 014-FUEL
BP U836
EP U837
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902461
ER
PT J
AU Souliotis, GA
Morrissey, DJ
Lansing, E
Hanold, K
Wozniak, GL
Berkeley, LBL
AF Souliotis, GA
Morrissey, DJ
Lansing, E
Hanold, K
Wozniak, GL
Berkeley, LBL
TI Survival of heavy residues and formation of new heavy nuclei with
unusual N/Z ratios at intermediate energy collisions.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oregon State Univ, Corvallis, OR 97331 USA.
NCSR Demokritos, Athens, Greece.
Michigan State Univ, E Lansing, MI 48824 USA.
LBL, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 032-NUCL
BP U327
EP U328
PN 2
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001062
ER
PT J
AU Steinberg, M
AF Steinberg, M
TI Natural gas and efficient technologies a response to global warming.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 043-FUEL
BP U846
EP U846
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902486
ER
PT J
AU Stevens, RC
AF Stevens, RC
TI Litmus test for pathogenic agents using engineered membranes.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 112-IEC
BP U945
EP U945
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902790
ER
PT J
AU Stojkovic, BP
McMahon, BH
Frauenfelder, H
Hay, PJ
Martin, RL
Garcia, A
AF Stojkovic, BP
McMahon, BH
Frauenfelder, H
Hay, PJ
Martin, RL
Garcia, A
TI Molecular dynamics calculations of CO binding to myoglobin with an
abinitio calculated heme - CO interaction potential.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 030-BIOL
BP U214
EP U214
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900587
ER
PT J
AU Sutton, R
Langlands, TLM
Miyake, E
Kinsey, RR
Burrows, TW
AF Sutton, R
Langlands, TLM
Miyake, E
Kinsey, RR
Burrows, TW
TI Distributed access to nuclear databases.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 San Jose State Univ, San Jose, CA 95192 USA.
Brookhaven Natl Lab, NNDC, Upton, NY 11973 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 057-NUCL
BP U334
EP U334
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001086
ER
PT J
AU Swanson, BI
Shreve, AP
Parikh, AN
Song, XD
AF Swanson, BI
Shreve, AP
Parikh, AN
Song, XD
TI Signal transduction and amplification in biosensors based on
protein-ligand interactions.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, CST, Los Alamos, NM 87545 USA.
RI PARIKH, ATUL/D-2243-2014
OI PARIKH, ATUL/0000-0002-5927-4968
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 102-IEC
BP U942
EP U942
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902780
ER
PT J
AU Szarka, AZ
Miller, JR
AF Szarka, AZ
Miller, JR
TI Pulsed radiolysis studies of fast intramolecular electron transfer
reaction in dicyanobifluorene.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Rutgers State Univ, Dept Chem, Newark, NJ 07102 USA.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 430-PHYS
BP U784
EP U784
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002361
ER
PT J
AU Taylor, BR
Kauzlarich, SM
Lee, HWH
Delgado, GR
AF Taylor, BR
Kauzlarich, SM
Lee, HWH
Delgado, GR
TI Nonlinear optical properties of germanium nanocrystals produced in
solution.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Davis, Dept Chem, Davis, CA 95616 USA.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 060-MTLS
BP U343
EP U343
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235101046
ER
PT J
AU Thoma, SG
Nenoff, TM
Ashley, CS
Reed, ST
AF Thoma, SG
Nenoff, TM
Ashley, CS
Reed, ST
TI Detect free molecular sieve composite membranes.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 040-CATL
BP U290
EP U290
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100883
ER
PT J
AU Toth, KS
AF Toth, KS
TI Particle decay investigations at the Holifield Radioactive Ion Beam
Facility.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 024-NUCL
BP U325
EP U325
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001054
ER
PT J
AU Tsouris, C
Ying, TY
Chin, CJ
Yiacoumi, S
AF Tsouris, C
Ying, TY
Chin, CJ
Yiacoumi, S
TI Flocculation and filtration in a magnetic-seeding process.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA.
Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 085-IEC
BP U937
EP U937
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902763
ER
PT J
AU Vandegrift, GF
Conner, C
Leonard, RA
Sedlet, J
Walker, D
Snelgrove, JL
AF Vandegrift, GF
Conner, C
Leonard, RA
Sedlet, J
Walker, D
Snelgrove, JL
TI Modification of targets and processes for conversion of 99Mo production
from high- to low-enriched uranium.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 002-IEC
BP U913
EP U913
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902681
ER
PT J
AU Vandegrift, GF
Conner, C
Leonard, RA
Sedlet, J
Walker, D
Snelgrove, JL
AF Vandegrift, GF
Conner, C
Leonard, RA
Sedlet, J
Walker, D
Snelgrove, JL
TI Modification of targets and processes for conversion of 99Mo production
from high- to low-enriched uranium.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 002-CELL
BP U331
EP U331
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900922
ER
PT J
AU Vincent, J
Luo, XL
Scott, BL
Kubas, GJ
AF Vincent, J
Luo, XL
Scott, BL
Kubas, GJ
TI A comparison of Ge-H and Si-H bond activation with group VI agostic
complexes.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 092-INOR
BP U27
EP U27
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000093
ER
PT J
AU Wang, P
Woodward, CA
Kaufman, EN
AF Wang, P
Woodward, CA
Kaufman, EN
TI PEG-modified ligninase for the degradation of recalcitrant pollutants in
water-solvent mixtures.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oak Ridge Natl Lab, Bioproc Res & Dev Ctr, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 029-BTEC
BP U252
EP U252
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100766
ER
PT J
AU Wang, Z
Friedrich, DM
Joly, AG
Peterson, KA
AF Wang, Z
Friedrich, DM
Joly, AG
Peterson, KA
TI The ground state proton-transfer tautomer of salicylate anion
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 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 115-PHYS
BP U691
EP U691
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002058
ER
PT J
AU Wasielewski, MR
Wiederrecht, GP
AF Wasielewski, MR
Wiederrecht, GP
TI Photorefractivity in polymer-stabilized nematic liquid crystal films.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 263-POLY
BP U78
EP U79
PN 3
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100262
ER
PT J
AU Watkin, JG
AF Watkin, JG
TI Biphasic homogeneous catalysis using surface-active palladium phosphine
complexes.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 038-INOR
BP U12
EP U12
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000039
ER
PT J
AU Watson, PR
Van Hove, MA
Hermann, K
AF Watson, PR
Van Hove, MA
Hermann, K
TI Surface structure data and materials design.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA.
Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Fritz Haber Inst, D-14195 Berlin, 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 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 043-CINF
BP U533
EP U533
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234901540
ER
PT J
AU Weger, HT
Rai, D
Hess, NJ
McGrail, BP
AF Weger, HT
Rai, D
Hess, NJ
McGrail, BP
TI Solubility and aqueous phase reactions of Gd in the K+-Na+-Gd3+-Co-3(2-)
- H2O system
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 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 096-NUCL
BP U345
EP U346
PN 2
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001125
ER
PT J
AU Whitten, DG
Geiger, HC
Stanescu, M
Perlstein, J
AF Whitten, DG
Geiger, HC
Stanescu, M
Perlstein, J
TI The role of aromatic-aromatic noncovalent interactions in building
supramolecular aggregates and novel assemblies.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Rochester, Ctr Photoinduced Charge Transfer, Rochester, NY 14627 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 295-COLL
BP U669
EP U670
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234901980
ER
PT J
AU Wignail, GD
Melnichenko, YB
AF Wignail, GD
Melnichenko, YB
TI Dimensions of polystyrene coils in the critical region of phase
demixing.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 135-PMSE
BP U853
EP U853
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002564
ER
PT J
AU Wiliiams, CW
Antonio, MR
Soderholm, L
AF Wiliiams, CW
Antonio, MR
Soderholm, L
TI The formation and stability of [Rp(5)W(30)O(110)](n-); R = light
lanthanide, Th, U, Am, and Cm.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 092-NUCL
BP U344
EP U344
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001121
ER
PT J
AU Wilkerson, MP
Burns, CJ
Paine, RT
Scott, BL
AF Wilkerson, MP
Burns, CJ
Paine, RT
Scott, BL
TI Structural preferences of uranyl compounds containing sterically
demanding alkoxide ligands.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA.
Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 591-INOR
BP U179
EP U179
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000591
ER
PT J
AU Wori, LA
Hill, DD
Padilla, DD
Prenger, FC
AF Wori, LA
Hill, DD
Padilla, DD
Prenger, FC
TI Magnetic separation for nuclear material detection and surveillance.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 067-IEC
BP U932
EP U932
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234902746
ER
PT J
AU Xia, YX
Rao, LF
Rai, D
AF Xia, YX
Rao, LF
Rai, D
TI Complexation of neptunium (IV) with isosaccharinate at different ionic
strengths.
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 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 097-NUCL
BP U346
EP U346
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001126
ER
PT J
AU Xie, XS
Lu, HP
Xun, LY
AF Xie, XS
Lu, HP
Xun, LY
TI Probing dynamics of single enzyme molecules
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
Washington State Univ, Dept Microbiol, Pullman, WA 99164 USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 394-PHYS
BP U774
EP U774
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235002327
ER
PT J
AU Xie, XS
Sanchez, E
Novotny, L
AF Xie, XS
Sanchez, E
Novotny, L
TI Near-field and two-photon fluorescence imaging of single molecules and
biomolecules
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 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 286-INOR
BP U84
EP U84
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000287
ER
PT J
AU Yang, CS
Kauzlarich, SM
Lee, HWH
Delgado, GR
AF Yang, CS
Kauzlarich, SM
Lee, HWH
Delgado, GR
TI Synthesis and characterization of small silicon nanoclusters terminated
with alkyls.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Davis, Dept Chem, Livermore, CA 95616 USA.
Univ Calif Lawrence Livermore Natl Lab, Photon Grp, Livermore, CA 94551 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 228-COLL
BP U649
EP U650
PN 1
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234901913
ER
PT J
AU Yang, LQ
Shah, V
DePristo, AE
AF Yang, LQ
Shah, V
DePristo, AE
TI Structural preference of CuPd catalysts on the nanometer length scale.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 010-CATL
BP U281
EP U281
PN 3
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WZ
UT WOS:000075235100855
ER
PT J
AU Yeston, JS
McNamara, BK
Bergman, RG
Moore, CB
AF Yeston, JS
McNamara, BK
Bergman, RG
Moore, CB
TI Flash kinetics and reactivity studies of tris- and
bis(dimethylpyrazolylborate)rhodium carbonyl species.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 564-INOR
BP U171
EP U171
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235000564
ER
PT J
AU Yeung, ES
Tan, H
Gao, Q
Pang, HM
Zhang, Y
AF Yeung, ES
Tan, H
Gao, Q
Pang, HM
Zhang, Y
TI Automation and integration of multiplexed on-line sample preparation
with capillary electrophoresis.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 US DOE, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 208-ANYL
BP U200
EP U200
PN 1
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WX
UT WOS:000075234900551
ER
PT J
AU Zganjar, EF
Piechaczek, A
Batchelder, JC
AF Zganjar, EF
Piechaczek, A
Batchelder, JC
TI Decay spectroscopy at the focal plane of a recoil mass spectrometer:
Measurement of the multipolarity of the 228 keV isomeric transition in
Y-80.
SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Meeting Abstract
C1 Louisiana State Univ, Baton Rouge, LA 70803 USA.
Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0065-7727
J9 ABSTR PAP AM CHEM S
JI Abstr. Pap. Am. Chem. Soc.
PD AUG 23
PY 1998
VL 216
MA 026-NUCL
BP U326
EP U326
PN 2
PG 1
WC Chemistry, Multidisciplinary
SC Chemistry
GA 107WY
UT WOS:000075235001056
ER
PT J
AU Glab, WL
Child, MS
Pratt, ST
AF Glab, WL
Child, MS
Pratt, ST
TI Rotationally resolved photoelectron spectroscopy of autoionizing states
of water
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID QUANTUM DEFECT THEORY; NEAR-THRESHOLD PHOTOIONIZATION; VIBRATIONAL
AUTOIONIZATION; MULTIPHOTON IONIZATION; RYDBERG STATES; H2O; SPECTRUM;
D2O; DISTRIBUTIONS; RESOLUTION
AB Rotationally resolved photoelectron spectra are reported for rovibronically state-selected autoionizing levels of water. These photoelectron spectra are helpful for the spectroscopic assignment of the autoionizing-levels and provide considerable dynamical information on the mechanisms for the transfer of energy and angular momentum between the ion core and the Rydberg electron. As a result of angular momentum restrictions, photoelectron spectra for J = 0 autoionizing levels provide a direct partial wave analysis for the ejected photoelectrons. (C) 1998 American Institute of Physics. [S0021-9606(98)00832-0].
C1 Texas Tech Univ, Dept Phys, Lubbock, TX 79409 USA.
Univ Oxford, Dept Theoret Chem, Oxford OX1 3UB, England.
Argonne Natl Lab, Argonne, IL 60439 USA.
RP Glab, WL (reprint author), Texas Tech Univ, Dept Phys, POB 41051, Lubbock, TX 79409 USA.
NR 32
TC 13
Z9 13
U1 0
U2 4
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 22
PY 1998
VL 109
IS 8
BP 3062
EP 3068
DI 10.1063/1.476897
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 114ZN
UT WOS:000075639200014
ER
PT J
AU Delmau, LH
Simon, N
Schwing-Weill, MJ
Arnaud-Neu, F
Dozol, JF
Eymard, S
Tournois, B
Bohmer, V
Gruttner, C
Musigmann, C
Tunayar, A
AF Delmau, LH
Simon, N
Schwing-Weill, MJ
Arnaud-Neu, F
Dozol, JF
Eymard, S
Tournois, B
Bohmer, V
Gruttner, C
Musigmann, C
Tunayar, A
TI 'CMPO-substituted' calix[4]arenes, extractants with selectivity among
trivalent lanthanides and between trivalent actinides and lanthanides
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID NITRIC-ACID; CONFORMERS; IONOPHORES; AM
AB Calix[4]arenes substituted by acetamidophosphine oxide groups at their wider (upper) rim not only exhibit excellent extraction efficiency towards trivalent cations but also show pronounced selectivity for the light lanthanides and actinides in their extraction from highly saline or acidic media.
C1 CEN Cadarache, DESD, SEP, LPTE, F-13108 St Paul Durance, France.
ECPM, F-67008 Strasbourg, France.
Johannes Gutenberg Univ, Inst Organ Chem, D-55099 Mainz, Germany.
RP Simon, N (reprint author), Oak Ridge Natl Lab, CASD, Chem Separat Grp, Oak Ridge, TN 37831 USA.
NR 11
TC 70
Z9 70
U1 0
U2 4
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 1359-7345
J9 CHEM COMMUN
JI Chem. Commun.
PD AUG 21
PY 1998
IS 16
BP 1627
EP 1628
DI 10.1039/a802555j
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 113PC
UT WOS:000075559600006
ER
PT J
AU Baumann, TF
Reynolds, JG
Fox, GA
AF Baumann, TF
Reynolds, JG
Fox, GA
TI Polymer pendant crown thioethers: synthesis and Hg-II extraction studies
of a novel thiacrown polymer
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID LIGAND CHEMISTRY; MACROCYCLIC POLYTHIAETHERS; AQUEOUS-SOLUTION;
METAL-IONS; MERCURY(II); PRECONCENTRATION; DIVINYLBENZENE; SILVER(I);
COMPLEXES; RECOVERY
AB A novel C-substituted crown thioether has been synthesized and used to prepare a cross-linked polystyrene polymer containing pendant crown thioethers and that product has been shown to be effective in extracting Hg-II from acidic aqueous solutions.
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Baumann, TF (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
EM baumann2@llnl.gov
NR 22
TC 41
Z9 41
U1 1
U2 9
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 1359-7345
J9 CHEM COMMUN
JI Chem. Commun.
PD AUG 21
PY 1998
IS 16
BP 1637
EP 1638
DI 10.1039/a803383h
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 113PC
UT WOS:000075559600011
ER
PT J
AU Campbell, BJ
Bellussi, G
Carluccio, L
Perego, G
Cheetham, AK
Cox, DE
Millini, R
AF Campbell, BJ
Bellussi, G
Carluccio, L
Perego, G
Cheetham, AK
Cox, DE
Millini, R
TI The synthesis of the new zeolite, ERS-7, and the determination of its
structure by simulated annealing and synchrotron X-ray powder
diffraction
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID FRAMEWORK
AB The new zeolite ERS-7 (EniRicerche-molecular-Sieve-7), which was synthesized within a narrow temperature and compositional range using N,N-dimethylpiperidinium as a structure directing agent, has a structure consisting of 17-sided (4(6)5(4)6(5)8(2)) picnic-basket-shaped cages connected by 8-membered ring windows.
C1 Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA.
EniTechnol SPA, I-20097 San Donato Milanese, Milan, Italy.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Cheetham, AK (reprint author), Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA.
RI Campbell, Branton/A-3990-2008
NR 10
TC 20
Z9 21
U1 1
U2 13
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 1359-7345
J9 CHEM COMMUN
JI Chem. Commun.
PD AUG 21
PY 1998
IS 16
BP 1725
EP 1726
DI 10.1039/a803572e
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 113PC
UT WOS:000075559600055
ER
PT J
AU Muller, T
Xantheas, SS
Dachsel, H
Harrison, RJ
Nieplocha, J
Shepard, R
Kedziora, GS
Lischka, H
AF Muller, T
Xantheas, SS
Dachsel, H
Harrison, RJ
Nieplocha, J
Shepard, R
Kedziora, GS
Lischka, H
TI A systematic ab initio investigation of the open and ring structures of
ozone
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID POTENTIAL-ENERGY SURFACES; SIZE-EXTENSIVE MODIFICATION;
CONFIGURATION-INTERACTION; EXCITED-STATES; WAVE-FUNCTIONS; PROGRAM
AB The energy difference between the open and the ring isomer of ozone as well as the dissociation energy (O-3((X) over tilde (1)A(1)) --> O-2(X, (3)Sigma(g)(-))+ O(P-3)) have been determined at the CCSD(T), MR-CISD and MR-AQCC levels of theory. Using correlation consistent basis sets up to quintuple-zeta quality, the estimated complete basis set limits for CCSD(T) and MR-AQCC lie within 1 kcal/mol of the experimental value of 26.1 +/- 0.4 kcal/mol and place the ring isomer by 4.8 and 5.3 kcal/mol, respectively, above the dissociation Limit. Zero-point vibrational corrections increase the latter two values by 1.4 kcal/mol. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Vienna, Inst Theoret Chem & Strahlenchem, A-1090 Vienna, Austria.
Pacific NW Natl Lab, Richland, WA 99352 USA.
Argonne Natl Lab, Div Chem, Theoret Chem Grp, Argonne, IL 60439 USA.
RP Univ Vienna, Inst Theoret Chem & Strahlenchem, Waehringer Guertel 18, A-1090 Vienna, Austria.
RI Lischka, Hans/A-8802-2015; Xantheas, Sotiris/L-1239-2015;
OI Xantheas, Sotiris/0000-0002-6303-1037
NR 32
TC 43
Z9 43
U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2614
EI 1873-4448
J9 CHEM PHYS LETT
JI Chem. Phys. Lett.
PD AUG 21
PY 1998
VL 293
IS 1-2
BP 72
EP 80
DI 10.1016/S0009-2614(98)00798-2
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 114HF
UT WOS:000075602500012
ER
PT J
AU Haschke, JM
AF Haschke, JM
TI Corrosion of uranium in air and water vapor: consequences for
environmental dispersal
SO JOURNAL OF ALLOYS AND COMPOUNDS
LA English
DT Article
DE uranium; kinetics; corrosion; dispersal
ID PLUTONIUM; TEMPERATURES; OXIDATION; MECHANISM; KINETICS; OXYGEN
AB An evaluation of published data for reaction of uranium in dry air, water vapor, and humid air provides a comprehensive and consistent picture of corrosion kinetics. Effects of temperature, oxygen pressure, and water pressure are quantified. Arrhenius data presented for eight kinetic regimes show that the corrosion rate in air varies by more than 10(8) over the 25-1500 degrees C range. Below 500 degrees C, kinetics are bounded by the slow rate for the reaction of dry air and by the rapid rate for the reaction of water at saturation pressures. in the autothermic regime above 500 degrees C, humidity effects are absent and involvement of nitrogen in the corrosion process is evident. Convergence of Arrhenius curves for dry and moist conditions at 500 degrees C closes a temperature-humidity envelope that confines the kinetic behavior of uranium in humid air at low temperatures. Kinetic relationships within the envelope suggest a competition between rate enhancement by moisture and rate suppression by oxygen. Suppression of the rate by O-2 in moist air is complete below 35-40 degrees C, but moisture enhancement is observed at higher temperatures where chemical behavior is consistent with a water-catalyzed cycle that promotes the corrosion of uranium by oxygen. Reaction rates of U and Pu are similar in dry air and water vapor, but diverge in humid air and at elevated temperatures. Particle size data for corrosion products are reviewed and their combined application with the kinetic results in defining source terms for dispersal of uranium metal is examined. (C) 1998 Elsevier Science S.A. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Haschke, JM (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
NR 24
TC 35
Z9 36
U1 1
U2 17
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-8388
J9 J ALLOY COMPD
JI J. Alloy. Compd.
PD AUG 21
PY 1998
VL 278
IS 1-2
BP 149
EP 160
DI 10.1016/S0925-8388(98)00639-2
PG 12
WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &
Metallurgical Engineering
SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
GA 117TW
UT WOS:000075799200028
ER
PT J
AU Zeng, LM
Franzen, HF
AF Zeng, LM
Franzen, HF
TI Refinement of the crystal structure of NdGe2Ni2
SO JOURNAL OF ALLOYS AND COMPOUNDS
LA English
DT Letter
DE neodymium; nickel; germanium; crystal structure
AB The structure of NdGe2Ni2 was refined using single-crystal X-ray data. The refinement shows the crystal structure of NdGe2Ni2 is tetragonal with the Al4Ba-type structure with the space group I4/mmm (No. 139), a=4.123(4) Angstrom, c=9.841(2) Angstrom, V=167.3(2) Angstrom(3) and Z=2 at room temperature. (C) 1998 Elsevier Science S.A. All rights reserved.
C1 Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
RP Franzen, HF (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-8388
J9 J ALLOY COMPD
JI J. Alloy. Compd.
PD AUG 21
PY 1998
VL 278
IS 1-2
BP L6
EP L7
DI 10.1016/S0925-8388(98)00523-4
PG 2
WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &
Metallurgical Engineering
SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
GA 117TW
UT WOS:000075799200002
ER
PT J
AU Nielsen, LB
Kahn, D
Duell, T
Weier, HUG
Taylor, S
Young, SG
AF Nielsen, LB
Kahn, D
Duell, T
Weier, HUG
Taylor, S
Young, SG
TI Apolipoprotein B gene expression in a series of human apolipoprotein B
transgenic mice generated with recA-assisted restriction endonuclease
cleavage-modified bacterial artificial chromosomes - An
intestine-specific enhancer element is located between 54 and 62
kilobases 5 ' to the structural gene
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID LOCUS-CONTROL REGION; BETA-GLOBIN GENE; RARE CLEAVAGE; TYROSINASE GENE;
DNA; PROMOTER; LIVER; LIPOPROTEIN(A); DISEASE; DISTANT
AB Prior studies have established that the expression of the human apolipoprotein B (apoB) gene in the intestine is dependent on DNA sequences located a great distance from the structural gene. To identify the location of those sequences, we used recA-assisted restriction endonuclease (RARE) cleavage to truncate the 5'- or 3'-flanking sequences from a 145-kilobase (kb) bacterial artificial chromosome spanning the entire human apoB gene. Seven RARE cleavage- modified bacterial artificial chromosomes with different lengths of flanking sequences were used to generate transgenic mice. An analysis of those mice revealed that as little as 1.5 kb of 3' sequences or 5 kb of 5' sequences were sufficient to confer apoB expression in the liver. in contrast, apoB gene expression in the intestine required DNA sequences 54-62 kb 5' to the structural gene. Those sequences retained their ability to direct apoB expression hn the intestine when they were moved closer to the gene. These studies demonstrate that the intestinal expression of the apoB gene is dependent on DNA sequences located an extraordinary distance from the structural gene and that the RARE cleavage/transgenic expression strategy is a powerful approach for analyzing distant gene-regulatory sequences.
C1 Univ Calif San Francisco, Gladstone Inst Cardiovasc Dis, San Francisco, CA 94141 USA.
Univ Calif San Francisco, Dept Med, San Francisco, CA 94143 USA.
Univ Calif San Francisco, Inst Cardiovasc Res, San Francisco, CA 94143 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Young, SG (reprint author), Univ Calif San Francisco, Gladstone Inst Cardiovasc Dis, POB 419100, San Francisco, CA 94141 USA.
RI Kahn, Daniel/B-9393-2013
FU NHLBI NIH HHS [HL47660]
NR 51
TC 35
Z9 35
U1 1
U2 1
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD AUG 21
PY 1998
VL 273
IS 34
BP 21800
EP 21807
DI 10.1074/jbc.273.34.21800
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 112JY
UT WOS:000075492600052
PM 9705318
ER
PT J
AU Ho, AM
Yeung, ES
AF Ho, AM
Yeung, ES
TI Capillary electrophoretic study of individual exocytotic events in
single mast cells
SO JOURNAL OF CHROMATOGRAPHY A
LA English
DT Article; Proceedings Paper
CT 11th International Symposium on High Performance Capillary
Electrophoresis and Related Microscale Techniques (HPCE 98)
CY FEB 01-05, 1998
CL ORLANDO, FLORIDA
DE single cell; serotonin
ID INDUCED NATIVE FLUORESCENCE; CATECHOLAMINES; STORAGE; RELEASE
AB In this work we have demonstrated the application of on-column dynamic release of serotonin from individual granules within rat peritoneal mast cells (RPMCs). These granules are approximately 0.25 A in volume and represent some of the smallest entities studied by capillary electrophoresis (CE). With the coupling of high-speed CE and laser-induced native fluorescence, a time resolution of 0.002 min and a detection limit of 0.9 amol (S/N=3, rms) were achieved. By using a secretagogue as the running buffer for CE, we resolved the peak profile of individual degranulation events released due to exocytosis. The average amount of serotonin released for five RPMCs analyzed was 33 amol +/-16%. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Iowa State Univ Sci & Technol, Ames Lab, US Dept Energy, Ames, IA 50011 USA.
Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA.
RP Yeung, ES (reprint author), Iowa State Univ Sci & Technol, Ames Lab, US Dept Energy, Ames, IA 50011 USA.
NR 16
TC 16
Z9 16
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0021-9673
J9 J CHROMATOGR A
JI J. Chromatogr. A
PD AUG 21
PY 1998
VL 817
IS 1-2
BP 377
EP 382
DI 10.1016/S0021-9673(98)00551-2
PG 6
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 120MP
UT WOS:000075960400045
PM 9764505
ER
PT J
AU Goyette, AN
Lawler, JE
Anderson, LW
Gruen, DM
McCauley, TG
Zhou, D
Krauss, AR
AF Goyette, AN
Lawler, JE
Anderson, LW
Gruen, DM
McCauley, TG
Zhou, D
Krauss, AR
TI Spectroscopic determination of carbon dimer densities in Ar-H-2-CH4 and
Ar-H-2-C-60 plasmas
SO JOURNAL OF PHYSICS D-APPLIED PHYSICS
LA English
DT Article
ID DIAMOND-FILM GROWTH; THERMAL-ENERGY; AR+; BUCKMINSTERFULLERENE
AB In contrast to conventional methods of diamond chemical vapour deposition (CVD), nanocrystalline diamond CVD takes place with only a small fraction of feed gas hydrogen. Minimal amounts of CH3, believed critical in hydrogen-rich CVD, are expected to be produced in hydrogen-deficient systems and alternative mechanisms for diamond growth must be considered. The carbon dimer, C-2, is believed to be an important species in these growth environments. We have experimentally determined the density of gas phase C-2 in Ar-H-2-CH4 and Ar-H-2-C-60 microwave plasmas used to deposit nanocrystalline diamond. The C-2 density is monitored using high-sensitivity absorption spectroscopy of the d(3)Pi <-- a (3)Pi (0, 0) band as chamber pressure, microwave power, substrate temperature and feed gas mixtures are varied for these two chemical systems. The absolute density of C-2 is most sensitive to the total chamber pressure and fraction of carbon in all molecular species in the feed gas in Ar-H-2-C-60 discharges and to the total chamber pressure and substrate temperature in Ar-H-2-CH4 plasmas. We discuss possible C-2 production channels in both chemical systems. The efficiency of C-2 production from fullerene precursors is over an order of magnitude greater than that from hydrocarbon precursors.
C1 Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
RP Goyette, AN (reprint author), Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
NR 20
TC 52
Z9 52
U1 2
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0022-3727
J9 J PHYS D APPL PHYS
JI J. Phys. D-Appl. Phys.
PD AUG 21
PY 1998
VL 31
IS 16
BP 1975
EP 1986
DI 10.1088/0022-3727/31/16/006
PG 12
WC Physics, Applied
SC Physics
GA 115BP
UT WOS:000075643900006
ER
PT J
AU Kissler-Patig, M
Forbes, DA
Minniti, D
AF Kissler-Patig, M
Forbes, DA
Minniti, D
TI Constraints on the merger models of elliptical galaxies from their
globular cluster systems
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE galaxies; elliptical and lenticular; cD; galaxies; interactions;
galaxies; star clusters
ID SPACE-TELESCOPE OBSERVATIONS; STAR-CLUSTERS; LUMINOSITY FUNCTIONS;
REMNANT NGC-7252; HALO; M87; POPULATION; EVOLUTION; DISCOVERY; DISTANCE
AB The discovery of protoglobular cluster candidates in many present-day mergers allows us to understand better the possible effects of a merger event on the globular cluster system of a galaxy, and to foresee the properties of the end-product. By comparing these expectations with the properties of globular cluster systems of elliptical galaxies at the present time we can constrain merger models. The observational data indicate that (i) every gaseous merger induces the formation of new star clusters, and (ii) the number of new clusters formed in such a merger increases with the gas content of the progenitor galaxies. Low-luminosity (about My > -21), discy ellipticals are generally thought to be the result of a gaseous merger. As such, new globular clusters are expected to form but have not been detected to date. We investigate various reasons for the non-detection of subpopulations in low-luminosity ellipticals, i.e. absence of an old population, absence of a new population, destruction of one of the populations and, finally, an age-metallicity conspiracy that allows old and new globular clusters to appear indistinguishable at the present epoch. All of these possibilities lead us to a similar conclusion, namely that low-luminosity ellipticals did not form recently (z < 1) in a gas-rich merger, and might not have formed in a major merger of stellar systems at all. High-luminosity ellipticals do reveal globular cluster subpopulations. However, it is difficult to account for the two populations in terms of mergers alone and, in particular, we can rule out scenarios in which the second subpopulation is the product of a recent, gas-poor merger.
C1 Univ Calif Santa Cruz, Lick Observ, Santa Cruz, CA 95064 USA.
Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Kissler-Patig, M (reprint author), Univ Calif Santa Cruz, Lick Observ, Santa Cruz, CA 95064 USA.
EM mkissler@ucolick.org; forbes@star.sr.bham.ac.uk; dminniti@igpp.llnl.gov
NR 62
TC 43
Z9 43
U1 0
U2 0
PU BLACKWELL SCIENCE LTD
PI OXFORD
PA P O BOX 88, OSNEY MEAD, OXFORD OX2 0NE, OXON, ENGLAND
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD AUG 21
PY 1998
VL 298
IS 4
BP 1123
EP 1132
DI 10.1046/j.1365-8711.1998.01725.x
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 117LA
UT WOS:000075781700016
ER
PT J
AU Peskin, ME
AF Peskin, ME
TI Particle physics - Electroweak reconciliation
SO SCIENCE
LA English
DT Editorial Material
ID RADIATIVE-CORRECTIONS; TECHNICOLOR THEORIES; PARAMETERS; BOSON; MODEL;
LIMIT; MASS
C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
RP Peskin, ME (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
EM mpeskin@slac.stanford.edu
NR 18
TC 4
Z9 4
U1 0
U2 0
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD AUG 21
PY 1998
VL 281
IS 5380
BP 1153
EP 1155
DI 10.1126/science.281.5380.1153
PG 3
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 113CE
UT WOS:000075531200037
ER
PT J
AU Collins, GW
Da Silva, LB
Celliers, P
Gold, DM
Foord, ME
Wallace, RJ
Ng, A
Weber, SV
Budil, KS
Cauble, R
AF Collins, GW
Da Silva, LB
Celliers, P
Gold, DM
Foord, ME
Wallace, RJ
Ng, A
Weber, SV
Budil, KS
Cauble, R
TI Measurements of the equation of state of deuterium at the fluid
insulator-metal transition
SO SCIENCE
LA English
DT Article
ID SHOCKED LIQUID DEUTERIUM; LOW-MASS STARS; MOLECULAR-HYDROGEN; DENSE
HYDROGEN; GIANT PLANETS; TEMPERATURE-MEASUREMENTS; BROWN DWARFS;
DISSOCIATION; JUPITER; PLASMAS
AB A high-intensity laser was used to shock-compress liquid deuterium to pressures from 22 to 340 gigapascals. In this regime deuterium is predicted to transform from an insulating molecular fluid to an atomic metallic fluid. Shock densities and pressures, determined by radiography, revealed an increase in compressibility near 100 gigapascals indicative of such a transition. Velocity interferometry measurements, obtained by reflecting a laser probe directly off the shock front in flight, demonstrated that deuterium shocked above 55 gigapascals has an electrical conductivity characteristic of a liquid metal and independently confirmed the radiography.
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
RP Cauble, R (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 36
TC 296
Z9 304
U1 3
U2 14
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD AUG 21
PY 1998
VL 281
IS 5380
BP 1178
EP 1181
DI 10.1126/science.281.5380.1178
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 113CE
UT WOS:000075531200049
ER
PT J
AU Notermans, DW
Goudsmit, J
Danner, SA
de Wolf, F
Perelson, AS
Mittler, J
AF Notermans, DW
Goudsmit, J
Danner, SA
de Wolf, F
Perelson, AS
Mittler, J
TI Rate of HIV-1 decline following antiretroviral therapy is related to
viral load at baseline and drug regimen
SO AIDS
LA English
DT Article
DE dynamics; biological models; HIV-1; combination drug therapy; ritonavir;
zidovudine; lamivudine
ID NATURAL-HISTORY; VIRUS LOAD; INFECTION; PLASMA; RNA; SEROCONVERSION;
RESERVOIR; PROGNOSIS; DYNAMICS; VIREMIA
AB Objectives and design: The dynamics of viral decline following the initiation of antiretroviral treatment were studied in 29 HIV-l-infected patients participating in a two-arm trial comparing immediate (group A: ritonavir, zidovudine and lamivudine) and delayed (group B: ritonavir supplemented by zidovudine and lamivudine on day 21) triple therapy. Parameters underlying viral dynamics were estimated using mathematical models tailored to these treatment protocols.
Results: The decline in plasma HIV-1 density between day 0 and 21 was steeper in group A (-2.27 +/- 0.46 log(10)) than group B (-1.87 +/- 0.56 log(10)). In a subset of patients amenable to full mathematical analysis, a short-lived productively infected cell compartment (producing similar to 97% of total virions) decayed with a half-life of 1.0-2.5 days, whereas a long-lived infected cell compartment decayed with a half-life of 18.8-32.8 days. Estimates for the time for the elimination of virus from these two cell populations ranged from 474 to 802 days. The rate of loss of productively infected CD4+ T cells was positively correlated with baseline viral load in group A and in the combined dataset.
Conclusions: These results suggest that HIV-infected cell populations may have a faster turnover in patients with higher viral loads due to higher infection rate parameters, higher rates of virus production, or lower virus clearance rates. (C) 1998 Lippincott-Raven Publishers.
C1 Univ Amsterdam, Acad Med Ctr, Dept Human Retrovirol, NL-1100 DE Amsterdam, Netherlands.
Univ Amsterdam, Acad Med Ctr, Div Infect Dis Trop Med & AIDS, NL-1100 DE Amsterdam, Netherlands.
Univ Amsterdam, Acad Med Ctr, Natl AIDS Therapy Evaluat Ctr, Dept Internal Med, NL-1100 DE Amsterdam, Netherlands.
Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Goudsmit, J (reprint author), Univ Amsterdam, Acad Med Ctr, Dept Human Retrovirol, POB 22700, NL-1100 DE Amsterdam, Netherlands.
FU NCRR NIH HHS [RR06555]; NIAID NIH HHS [AI40387]
NR 25
TC 74
Z9 75
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 USA
SN 0269-9370
J9 AIDS
JI Aids
PD AUG 20
PY 1998
VL 12
IS 12
BP 1483
EP 1490
DI 10.1097/00002030-199812000-00010
PG 8
WC Immunology; Infectious Diseases; Virology
SC Immunology; Infectious Diseases; Virology
GA 112EH
UT WOS:000075480800010
PM 9727569
ER
PT J
AU Luo, X
McCreary, EL
Atencio, JH
McCown, AW
Sander, RK
AF Luo, X
McCreary, EL
Atencio, JH
McCown, AW
Sander, RK
TI Bubble chamber as a trace chemical detector
SO APPLIED OPTICS
LA English
DT Article
ID ABSORPTION-MEASUREMENTS; NUCLEATION; SOLVENTS
AB A novel concept for trace chemical analysis in liquids has been demonstrated. The technique utilizes light absorption in a superheated liquid. Although a superheated Liquid is thermodynamically unstable, a high degree of superheating can be dynamically achieved for a short period of time. During this time the superheated liquid is extremely sensitive to boiling at nucleation sites produced by energy deposition. Observation of bubbles in the superheated liquid in some sense provides amplification of the initial energy deposition. Bubble chambers containing superheated liquids have been used to detect energetic particles; now a bubble chamber is used to detect a trace chemical in superheated liquid propane by observing bubble formation initiated by optical absorption. Crystal violet is used as a test case and can be detected at the subpart-per-10(12) level by using a Nd:YAG laser. The mechanism for bubble formation and ideas for further improvement are discussed. (C) 1998 Optical Society of America.
C1 Gemfire Corp, Palo Alto, CA 94303 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Luo, X (reprint author), Gemfire Corp, Palo Alto, CA 94303 USA.
NR 22
TC 0
Z9 0
U1 0
U2 0
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0003-6935
J9 APPL OPTICS
JI Appl. Optics
PD AUG 20
PY 1998
VL 37
IS 24
BP 5640
EP 5646
DI 10.1364/AO.37.005640
PG 7
WC Optics
SC Optics
GA 110CA
UT WOS:000075360700016
PM 18286050
ER
PT J
AU Sherwood, JL
Petersen, JN
Skeen, RS
AF Sherwood, JL
Petersen, JN
Skeen, RS
TI Biodegradation of 1,1,1-trichloroethane by a carbon
tetrachloride-degrading denitrifying consortium
SO BIOTECHNOLOGY AND BIOENGINEERING
LA English
DT Article
DE denitrification; biodegradation; kinetics; 1,1,1-trichloroethane
ID SP STRAIN KC; DENITRIFICATION CONDITIONS; BIOLOGICAL DESTRUCTION;
TRANSFORMATION; NITRATE; INHIBITION; CCL4
AB A denitrifying consortium capable of degrading carbon tetrachloride (CT) was shown to also degrade 1,1,1-trichloroethane (TCA). Fed-batch experiments demonstrated that the specific rate of TCA degradation by the consortium was comparable to the specific rate of CT degradation (approximately 0.01 L/gmol/min) and was independent of the limiting nutrient. Although previous work demonstrated that 4-50% of CT transformed by the consortium was converted to chloroform (CF), no reductive dechlorination products were detected during TCA degradation, regardless of the limiting nutrient. The lack of chlorinated TCA degradation products implies that the denitrifying consortium possesses an alternate pathway for the degradation of chlorinated solvents which does not involve reductive dechlorination. (C) 1998 John Wiley & Sons, Inc.
C1 Washington State Univ, Dept Chem Engn, Pullman, WA 99164 USA.
Battelle Pacific NW Natl Lab, Bioproc Grp, Richland, WA 99352 USA.
RP Petersen, JN (reprint author), Washington State Univ, Dept Chem Engn, POB 642710, Pullman, WA 99164 USA.
EM jn_petersen@wsu.edu
RI Petersen, James/B-8924-2008
NR 31
TC 13
Z9 13
U1 1
U2 3
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0006-3592
J9 BIOTECHNOL BIOENG
JI Biotechnol. Bioeng.
PD AUG 20
PY 1998
VL 59
IS 4
BP 393
EP 399
PG 7
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 101LZ
UT WOS:000074871600001
ER
PT J
AU Fast, JD
Zhong, SY
AF Fast, JD
Zhong, SY
TI Meteorological factors associated with inhomogeneous ozone
concentrations within the Mexico City basin
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID 4-DIMENSIONAL DATA-ASSIMILATION; NORTH-ATLANTIC; CLOSURE-MODEL;
AIR-POLLUTION; PREDICTION; FLOWS; TURBULENCE; DISPERSION; TERRAIN;
PROJECT
AB Meteorological processes associated with inhomogeneous ozone concentrations over Mexico City are examined by using observations from a recent field campaign and a mesoscale dynamics and dispersion modeling system. During this 4-week field campaign, meteorological measurements of the spatial flow structure within the Mexico City basin were obtained for the first time. A mesoscale model that employs four-dimensional data assimilation is used to create analyses that describe the boundary layer characteristics and local and regional circulations in the vicinity of Mexico City. The mesoscale analyses are then used to drive a Lagrangian particle dispersion model to simulate pollutant transport and diffusion. The resemblance between the calculated particle concentration fields and the observed spatial ozone patterns indicates that the mesoscale analyses, based on the model and the observed profiles of wind, temperature, and humidity, captured the main flow features responsible for the inhomogeneous ozone concentrations within the basin. The highest particle concentrations usually occurred in the vicinity of the peak ozone concentrations during the afternoon. The observations and mesoscale analyses provided evidence that the circulations are highly complex, and relatively weak upper level synoptic systems had an impact on the local and regional thermally driven flows in the area. Ln addition to horizontal advection and vertical diffusion, vertical wind shears, recirculation patterns associated with venting and entrainment processes, and mean vertical motions due to convergence within the basin also played an important role in producing the spatial variations in the near-surface particle distributions. The contribution of emissions from the previous day was found to be relatively minor for the periods examined in this study, even though the nocturnal wind speeds were light, suggesting that the high ozone concentrations are not due to multiday accumulation of pollutants.
C1 Pacific NW Natl Lab, Environm & Hlth Sci Div, Richland, WA 99352 USA.
RP Fast, JD (reprint author), Pacific NW Natl Lab, Environm & Hlth Sci Div, POB 999,MSIN K9-30, Richland, WA 99352 USA.
EM jerome.fast@pnl.gov; shiyuan.zhong@pnl.gov
NR 41
TC 97
Z9 97
U1 1
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD AUG 20
PY 1998
VL 103
IS D15
BP 18927
EP 18946
DI 10.1029/98JD01725
PG 20
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 112LE
UT WOS:000075495500005
ER
PT J
AU Zhang, Y
Bischof, CH
Easter, RC
Wu, PT
AF Zhang, Y
Bischof, CH
Easter, RC
Wu, PT
TI Sensitivity analysis of a mixed-phase chemical mechanism using automatic
differentiation
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
ID MASS ACCOMMODATION COEFFICIENTS; AIR-WATER-INTERFACE; HETEROGENEOUS
REACTIONS; TEMPERATURE-DEPENDENCE; ATMOSPHERIC CHEMISTRY; AQUEOUS
SURFACES; SULFURIC-ACID; OZONE; SO2; N2O5
AB A sensitivity analysis of a comprehensive mixed-phase chemical mechanism is conducted under a variety of atmospheric conditions. The local sensitivities of gas and aqueous phase species concentrations with respect to a variety of model parameters are calculated using the novel automatic differentiation ADIFOR tool. The main chemical reaction pathways in all phases, interfacial mass transfer processes, and ambient physical parameters that affect tropospheric O-3 formation and O-3-precursor relations under all modeled conditions are identified and analyzed. The results show that the presence of clouds not only reduces many gas phase species concentrations and the total oxidizing capacity but alters O-3-precursor relations. Decreases in gas phase concentrations and photochemical formation rates of O-3 can be up to 9% and 100%, respectively, depending on the preexisting atmospheric conditions. The decrease in O-3 formation is primarily caused by the aqueous phase reactions of O-2(-) with dissolved HO2 and O-3 under most cloudy conditions.
C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
Battelle Mem Inst, Environm & Energy Sci Div, Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Zhang, Y (reprint author), Atmospher & Environm Res Inc, 2682 Bishop Dr,Suite 120, San Ramon, CA 94583 USA.
EM yzhang@aer.com
RI Bischof, Christian/D-2897-2009
NR 60
TC 16
Z9 18
U1 0
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD AUG 20
PY 1998
VL 103
IS D15
BP 18953
EP 18979
DI 10.1029/98JD01278
PG 27
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 112LE
UT WOS:000075495500007
ER
PT J
AU Hartzell, CJ
Cygan, RT
Nagy, KL
AF Hartzell, CJ
Cygan, RT
Nagy, KL
TI Molecular modeling of the tributyl phosphate complex of europium nitrate
in the clay hectorite
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID MONTE-CARLO SIMULATION; SOLID-STATE NMR; COMPUTER-SIMULATION; MINERALS;
MONTMORILLONITE; SMECTITES; CATIONS; WATER; NA-23
AB Molecular modeling of the large tributyl phosphate complex of europium provides a test of the sensitivity of force field calculations to molecules within the interlayer of a trioctahedral smectite clay. A nonbonded version of the consistent-valence force field was utilized. Parametrization is based on the structures of simple clays and oxides. The simulations were carried out with complete translational freedom for all atoms. Energy minimization of the hectorite supercell containing, within the interlayer, the Eu.3TBP complex as the trinitrate, eight sodium cations, and 48 waters of hydration resulted in a d spacing of 18.66 Angstrom. Molecular dynamics simulations at 298 K resulted in a d spacing of 17.40 +/- 0.15 Angstrom. The experimental d spacing for hectorite absorbed with the TBP solvate of EU(NO3)(3) is 17.18 +/- 0.04 Angstrom.
C1 No Arizona Univ, Dept Chem, Flagstaff, AZ 86011 USA.
Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA.
Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA.
RP Hartzell, CJ (reprint author), No Arizona Univ, Dept Chem, Flagstaff, AZ 86011 USA.
NR 30
TC 26
Z9 26
U1 0
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD AUG 20
PY 1998
VL 102
IS 34
BP 6722
EP 6729
DI 10.1021/jp981089m
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 117MY
UT WOS:000075786500003
ER
PT J
AU Luna, M
Rieutord, F
Melman, NA
Dai, Q
Salmeron, M
AF Luna, M
Rieutord, F
Melman, NA
Dai, Q
Salmeron, M
TI Adsorption of water on alkali halide surfaces studied by scanning
polarization force microscopy
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID THIN-FILMS; NACL(100)
AB The adsorption of water on several alkali halide surfaces was studied using scanning polarization force microscopy. Water adsorption leads to an overall increase of surface potential and ionic mobility. At a critical humidity that is characteristic of each salt (NaCl, KCI, KBr, and KI), important changes in the rate of increase of the surface potential and ionic mobility occurred. Topographical changes occurred as well, in the form of step motion. These were observed to occur at a fast rate above the critical point, while little step motion occurred at lower humidity. Dissolution of the crystal (deliquescence) is observed at high humidity. Below the critical humidity, contact potential images indicate that preferential solvation of cations occurs at steps producing a large enhancement of the step contrast in the images.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Autonoma Madrid, Fac Ciencias, Dept Fis Mat Condensada, E-28049 Madrid, Spain.
CEA, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble, France.
Eindhoven Univ Technol, Dept Phys, NL-5600 MB Eindhoven, Netherlands.
RP Salmeron, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RI Luna, Monica/M-1792-2014
OI Luna, Monica/0000-0002-7104-0726
NR 14
TC 102
Z9 102
U1 1
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD AUG 20
PY 1998
VL 102
IS 34
BP 6793
EP 6800
DI 10.1021/jp9820875
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 117MY
UT WOS:000075786500013
ER
PT J
AU Wang, LW
Zunger, A
AF Wang, LW
Zunger, A
TI High-energy excitonic transitions in CdSe quantum dots
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Letter
ID SPECTROSCOPY; ASSIGNMENT
AB An atomistic direct diagonalization pseudopotential approach has been used to analyze the optical excitation spectra of CdSe quantum dots for up to 1.5 eV about the band gap. Good agreement is obtained with experiment for all the eight excitonic transitions, without resorting to fitting to the experimental data on dots. The observed excitonic transitions are identified in terms of specific pairs of valence and conduction single-particle states. For the lowest few transitions, the assignments agree with the conventional k.p effective-mass result, but this is not the case for the higher peaks. Indeed, we find in our atomistic approach that many more valence states exist within a given energy range than in the continuum k.p approach. Furthermore, we find that the mixing of even and odd angular momentum symmetry, disallowed in the contemporary simple k.p models, is actually permitted in the more general atomistic approach.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Wang, LW (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
NR 21
TC 90
Z9 91
U1 2
U2 11
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5647
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD AUG 20
PY 1998
VL 102
IS 34
BP 6449
EP 6454
PG 6
WC Chemistry, Physical
SC Chemistry
GA 117MX
UT WOS:000075786400001
ER
PT J
AU Ellingson, RJ
Asbury, JB
Ferrere, S
Ghosh, HN
Sprague, JR
Lian, TQ
Nozik, AJ
AF Ellingson, RJ
Asbury, JB
Ferrere, S
Ghosh, HN
Sprague, JR
Lian, TQ
Nozik, AJ
TI Dynamics of electron injection in nanocrystalline titanium dioxide films
sensitized with [Ru(4,4 '-dicarboxy-2,2 '-bipyridine)(2)(NCS)(2)] by
infrared transient absorption
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Letter
ID TIO2; DYE
AB We have used femtosecond pump-probe spectroscopy to time resolve the injection of electrons into nanocrystalline TiO2 film electrodes under ambient conditions following photoexcitation of the adsorbed dye, [Ru(4,4'-dicarboxy-2,2'-bipyridine)(2)(NCS)(2)] (N3). Pumping at one of the metal-to-ligand charge-transfer absorption peaks and probing the absorption by injected electrons in the TiO2 at 1.52 mu m and in the range of 4.1-7.0 mu m, we have directly observed the arrival of electrons injected into the TiO2 film. Our measurements indicate an instrument-limited similar to 50 fs upper limit on the electron injection time. We have compared the infrared transient absorption for noninjecting systems consisting of N3 in ethanol and N3 adsorbed to films of nanocrystalline Al2O3 and ZrO2 and found no indication of electron injection at probe wavelengths in the mid-IR (4.1-7.0 mu m).
C1 Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO 80401 USA.
Emory Univ, Dept Chem, Atlanta, GA 30322 USA.
RP Ellingson, RJ (reprint author), Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO 80401 USA.
RI Ellingson, Randy/H-3424-2013; Lian, Tianquan/L-8992-2013; Ghosh,
Hirendra/J-8776-2012; Nozik, Arthur/A-1481-2012; Nozik,
Arthur/P-2641-2016
OI Lian, Tianquan/0000-0002-8351-3690;
NR 15
TC 239
Z9 239
U1 3
U2 36
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5647
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD AUG 20
PY 1998
VL 102
IS 34
BP 6455
EP 6458
DI 10.1021/jp982310y
PG 4
WC Chemistry, Physical
SC Chemistry
GA 117MX
UT WOS:000075786400002
ER
PT J
AU Srinivasan, MG
Kot, CA
AF Srinivasan, MG
Kot, CA
TI Damage index algorithm for a circular cylindrical shell
SO JOURNAL OF SOUND AND VIBRATION
LA English
DT Letter
C1 Argonne Natl Lab, Reactor Engn Div, Argonne, IL 60439 USA.
RP Srinivasan, MG (reprint author), Argonne Natl Lab, Reactor Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 6
TC 13
Z9 18
U1 0
U2 1
PU ACADEMIC PRESS LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0022-460X
J9 J SOUND VIB
JI J. Sound Vibr.
PD AUG 20
PY 1998
VL 215
IS 3
BP 587
EP 591
DI 10.1006/jsvi.1998.1627
PG 5
WC Acoustics; Engineering, Mechanical; Mechanics
SC Acoustics; Engineering; Mechanics
GA 110QU
UT WOS:000075392500014
ER
PT J
AU Seurin, JFP
Liu, GB
Barnes, DC
Babic, DI
Corzine, SW
Tan, MRT
AF Seurin, JFP
Liu, GB
Barnes, DC
Babic, DI
Corzine, SW
Tan, MRT
TI A finite-difference time-domain electromagnetic field solver for
vertical-cavity lasers
SO MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
LA English
DT Article
DE electromagnetic field solver; finite-difference time-domain methods;
vertical-cavity lasers
ID SURFACE-EMITTING LASERS
AB We present a full-vector Maxwell equation solver for the analysis of vertical-cavity surface-emitting lasers (VCSELs) with circular symmetry using the finite-difference time-domain (FDTD) method We apply this model to the air-post index-guided 1.55 mu m VCSEL structure, and determine the resonant wavelengths and the quality factor for elected lowest order modes. The results of this study enable quantitative and qualitative descriptions of the transverse-mode competition and emission spectra of VCSELs. (C) 1998 John Wiley & Sons, Inc.
C1 Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Hewlett Packard Labs, Palo Alto, CA 94304 USA.
RP Seurin, JFP (reprint author), Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA.
NR 15
TC 10
Z9 10
U1 0
U2 2
PU JOHN WILEY & SONS INC
PI NEW YORK
PA 605 THIRD AVE, NEW YORK, NY 10158-0012 USA
SN 0895-2477
J9 MICROW OPT TECHN LET
JI Microw. Opt. Technol. Lett.
PD AUG 20
PY 1998
VL 18
IS 6
BP 385
EP 387
DI 10.1002/(SICI)1098-2760(19980820)18:6<385::AID-MOP6>3.0.CO;2-9
PG 3
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA 103KP
UT WOS:000075155700006
ER
PT J
AU Pratt, LR
Laviolette, RA
AF Pratt, LR
Laviolette, RA
TI Quasi-chemical theories of associated liquids
SO MOLECULAR PHYSICS
LA English
DT Article
ID DIRECTIONAL ATTRACTIVE FORCES; HYDROGEN-BONDED FLUIDS; THERMODYNAMIC
PERTURBATION-THEORY; NETWORK-FORMING FLUIDS; LATTICE MODEL; CLUSTER
EXPANSIONS; STATISTICAL-MECHANICS; SUPERCOOLED WATER; DENSITY ANOMALIES;
EQUILIBRIUM
AB It is shown how traditional development of theories of fluids based upon the concept of physical clustering can be adapted to an alternative local clustering definition. The alternative clustering definition can preserve a detailed valence description of the interactions between a solution species and its near-neighbours, i.e., cooperativity and saturation of coordination for strong association. These clusters remain finite even for condensed phases. The simplest theory to which these developments lead is analogous to quasi-chemical theories of cooperative phenomena. The present quasi-chemical theories require additional consideration of packing issues because they do not impose lattice discretizations on the continuous problem. These quasi-chemical theories do not require pair decomposable interaction potential energy models. Since calculations may be required only for moderately sized clusters, it is suggested that these quasi-chemical theories could be implemented with computational tools of current molecular electronic structure theory. In this way an intermediate step of approximate force field generation can be avoided.
C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Idaho Engn & Environm Lab, Idaho Falls, ID 83415 USA.
RP Pratt, LR (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RI Pratt, Lawrence/H-7955-2012
OI Pratt, Lawrence/0000-0003-2351-7451
NR 63
TC 51
Z9 51
U1 1
U2 9
PU TAYLOR & FRANCIS LTD
PI LONDON
PA ONE GUNPOWDER SQUARE, LONDON EC4A 3DE, ENGLAND
SN 0026-8976
J9 MOL PHYS
JI Mol. Phys.
PD AUG 20
PY 1998
VL 94
IS 6
BP 909
EP 915
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 112PE
UT WOS:000075502300004
ER
PT J
AU van Severen, UJ
Clark, RM
Krucken, R
Hubel, H
Asztalos, SJ
Becker, JA
Busse, BC
Deleplanque, MA
Diamond, RM
Fallon, P
Hauschild, K
Hibbert, IM
Lee, IY
Macchiavelli, AO
MacLeod, RW
Schmid, G
Stephens, FS
Vetter, K
Wadsworth, R
Wan, S
AF van Severen, UJ
Clark, RM
Krucken, R
Hubel, H
Asztalos, SJ
Becker, JA
Busse, BC
Deleplanque, MA
Diamond, RM
Fallon, P
Hauschild, K
Hibbert, IM
Lee, IY
Macchiavelli, AO
MacLeod, RW
Schmid, G
Stephens, FS
Vetter, K
Wadsworth, R
Wan, S
TI Comparative quadrupole moments of superdeformed bands in Pb193-196
SO PHYSICS LETTERS B
LA English
DT Article
ID DIFFERENTIAL LIFETIME MEASUREMENTS; TRANSITION RATES; SPIN STATES;
HG-194; PB-194; NUCLEI; DY-152
AB Lifetimes have been measured for states in five superdeformed yrast bands in Pb193-196 using the Gammasphere spectrometer array. Centroid shifts and lineshapes of transitions showing attenuated Doppler shifts have been analyzed. Transition quadrupole moments are deduced for the five bands including, for the first time, bands of two odd-A Pb isotopes. The quadrupole moments are found to be remarkably similar for the yrast bands in Pb-194 (band 1), Pb-195 (bands 1 and 2) and Pb-196 (band 1)(Q(t) approximate to 20 b). However, for Pb-193 a smaller value, Q(t) = 17.3(7) b, is obtained. This can be explained in terms of the occupation of the neutron N = 7 intruder orbitals. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Bonn, Inst Strahlen & Kernphys, D-53115 Bonn, Germany.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ York, Dept Phys, York YO1 5DD, N Yorkshire, England.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Gesell Schwerionenforsch GmbH, D-64291 Darmstadt, Germany.
RP van Severen, UJ (reprint author), Univ Bonn, Inst Strahlen & Kernphys, Nussallee 14-16, D-53115 Bonn, Germany.
RI Hauschild, Karl/A-6726-2009; Kruecken, Reiner/A-1640-2013
OI Kruecken, Reiner/0000-0002-2755-8042
NR 26
TC 19
Z9 19
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 AUG 20
PY 1998
VL 434
IS 1-2
BP 14
EP 20
DI 10.1016/S0370-2693(98)00819-3
PG 7
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 119DB
UT WOS:000075879200003
ER
PT J
AU Allen, TJ
Olsson, MG
Veseli, S
AF Allen, TJ
Olsson, MG
Veseli, S
TI Excited glue and the vibrating flux tube
SO PHYSICS LETTERS B
LA English
DT Article
ID HYBRID MESONS; STRING THEORY; MODEL; QCD
AB Recent lattice results for the energy of gluonic excitations as a function of quark separation are shown to correspond to transverse relativistic flux tube vibration modes. For large quark separations all states, appear to degenerate into a few categories which are predicted uniquely, given the ground state. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Allen, TJ (reprint author), Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
NR 29
TC 29
Z9 29
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 AUG 20
PY 1998
VL 434
IS 1-2
BP 110
EP 114
DI 10.1016/S0370-2693(98)00738-2
PG 5
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 119DB
UT WOS:000075879200018
ER
PT J
AU Acciarri, M
Adriani, O
Aguilar-Benitez, M
Ahlen, S
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Ambrosi, G
Anderhub, H
Andreev, VP
Angelescu, T
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Baksay, L
Ball, RC
Banerjee, S
Banerjee, S
Banicz, K
Barczyk, A
Barillere, R
Barone, L
Bartalini, P
Baschirotto, A
Basile, M
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Bhattacharya, S
Biasini, M
Biland, A
Bilei, GM
Blaising, JJ
Blyth, SC
Bobbink, GJ
Bock, R
Bohm, A
Boldizsar, L
Borgia, B
Bourilkov, D
Bourquin, M
Boutigny, D
Braccini, S
Branson, JG
Brigljevic, V
Brock, IC
Buffini, A
Buijs, A
Burger, JD
Burger, WJ
Busenitz, J
Cai, XD
Campanelli, M
Capell, M
Romeo, GC
Carlino, G
Cartacci, AM
Casaus, J
Castellini, G
Cavallari, F
Cavallo, N
Cecchi, C
Cerrada, M
Cesaroni, F
Chamizo, M
Chang, YH
Chaturvedi, UK
Chekanov, SV
Chemarin, M
Chen, A
Chen, G
Chen, GM
Chen, HF
Chen, HS
Chen, M
Chiefari, G
Chien, CY
Cifarelli, L
Cindolo, F
Civinini, C
Clare, I
Clare, R
Coignet, G
Colijn, AP
Colino, N
Costantini, S
Cotorobai, F
de la Cruz, B
Csilling, A
Dai, TS
D'Alessandro, R
de Asmundis, R
Degre, A
Deiters, K
Denes, P
DeNotaristefani, F
Diemoz, M
van Dierendonck, D
Di Lodovico, F
Dionisi, C
Dittmar, M
Dominguez, A
Doria, A
Dova, MT
Drago, E
Duchesneau, D
Duinker, P
Duran, I
Easo, S
El Mamouni, H
Engler, A
Eppling, FJ
Erne, FC
Ernenwein, JP
Extermann, P
Fabre, M
Faccini, R
Falagan, MA
Falciano, S
Favara, A
Fay, J
Fedin, O
Felcini, M
Ferguson, T
Ferroni, F
Fesefeldt, H
Fiandrini, E
Field, JH
Filthaut, F
Fisher, PH
Fisk, I
Forconi, G
Fredj, L
Freudenreich, K
Furetta, C
Galaktionov, Y
Ganguli, SN
Garcia-Abia, P
Gataullin, M
Gau, SS
Gentile, S
Gerald, J
Gheordanescu, N
Giagu, S
Goldfarb, S
Goldstein, J
Gong, ZF
Gougas, A
Gratta, G
Gruenewald, MW
van Gulik, R
Gupta, VK
Gurtu, A
Gutay, LJ
Haas, D
Hartmann, B
Hasan, A
Hatzifotiadou, D
Hebbeker, T
Herve, A
Hidas, P
Hirschfelder, J
van Hoek, WC
Hofer, H
Hoorani, H
Hou, SR
Hu, G
Iashvili, I
Jin, BN
Jones, LW
de Jong, P
Josa-Mutuberria, I
Kasser, A
Khan, RA
Kamrad, D
Kapustinsky, JS
Karyotakis, Y
Kaur, M
Kienzle-Focacci, MN
Kim, D
Kim, DH
Kim, JK
Kim, SC
Kinnison, WW
Kirkby, A
Kirkby, D
Kirkby, J
Kiss, D
Kittel, W
Klimentov, A
Konig, AC
Kopp, A
Korolko, I
Koutsenko, V
Kraemer, RW
Krenz, W
Kunin, A
Lacentre, P
de Guevara, PL
Landi, G
Lapoint, C
Lassila-Perini, K
Laurikainen, P
Lavorato, A
Lebeau, M
Lebedev, A
Lebrun, P
Lecomte, T
Lecoq, P
Le Coultre, P
Lee, HJ
Leggett, C
Le Goff, JM
Leiste, R
Leonardi, E
Levtchenko, P
Li, C
Lin, CH
Lin, WT
Linde, FL
Lista, L
Liu, ZA
Lohmann, W
Longo, E
Lu, W
Lu, YS
Lubelsmeyer, K
Luci, C
Luckey, D
Luminari, L
Lustermann, W
Ma, WG
Maity, M
Majumder, G
Malgeri, L
Malinin, A
Mana, C
Mangeol, D
Marchesini, P
Marian, G
Marin, A
Martin, JP
Marzano, F
Massaro, GGG
Mazumdar, K
Mele, S
Merola, L
Meschini, M
Metzger, WJ
von der Mey, M
Mi, Y
Migani, D
Mihul, A
van Mil, AJW
Milcent, H
Mirabelli, G
Mnich, J
Molnar, P
Monteleoni, B
Moore, R
Moulik, T
Mount, R
Muheim, F
Muijs, AJM
Nahn, S
Napolitano, M
Nessi-Tedaldi, F
Newman, H
Niessen, T
Nippe, A
Nisati, A
Nowak, H
Oh, YD
Organtini, G
Ostonen, R
Palit, S
Palomares, C
Pandoulas, D
Paoletti, S
Paolucci, P
Park, HK
Park, IH
Pascale, G
Passaleva, G
Patricelli, S
Paul, T
Pauluzzi, M
Paus, C
Pauss, F
Peach, D
Pei, YJ
Pensotti, S
Perret-Gallix, D
Petersen, B
Petrak, S
Pevsner, A
Piccolo, D
Pieri, M
Piroue, PA
Pistolesi, E
Plyaskin, V
Pohl, M
Pojidaev, V
Postema, H
Pothier, J
Produit, N
Prokofiev, D
Quartieri, J
Rahal-Callot, G
Raja, N
Rancoita, PG
Rattaggi, M
Raven, G
Razis, P
Ren, D
Rescigno, M
Reucroft, S
van Rhee, T
Riemann, S
Riles, K
Rind, O
Robohm, A
Rodin, J
Roe, BP
Romero, L
Rosier-Lees, S
Rosselet, P
Roth, S
Rubio, JA
Ruschmeier, D
Rykaczewski, H
Salicio, J
Sanchez, E
Sanders, MP
Sarakinos, ME
Sauvage, G
Schafer, C
Schegelsky, V
Schmidt-Kaerst, S
Schmitz, D
Schneegans, M
Scholz, N
Schopper, H
Schotanus, DJ
Schwenke, J
Schwering, G
Sciacca, C
Sciarrino, D
Servoli, L
Shevchenko, S
Shivarov, N
Shoutko, V
Shukla, J
Shumilov, E
Shvorob, A
Siedenburg, T
Son, D
Soulimov, V
Smith, B
Spillantini, P
Steuer, M
Stickland, DP
Stone, H
Stoyanov, B
Straessner, A
Sudhakar, K
Sultanov, G
Sun, LZ
Susinno, GF
Suter, H
Swain, JD
Tang, XW
Tauscher, L
Taylor, L
Ting, SCC
Ting, SM
Tonwar, SC
Toth, J
Tully, C
Tung, KL
Uchida, Y
Ulbricht, J
Valente, E
Vesztergombi, G
Vetlitsky, I
Viertel, G
Vivargent, M
Vorvolakos, A
Wadhwa, M
Wallraff, W
Wang, JC
Wang, XL
Wang, ZM
Weber, A
Wu, SX
Wynhoff, S
Xu, J
Xu, ZZ
Yang, BZ
Yang, CG
Yang, HJ
Yang, M
Ye, JB
Yeh, SC
You, JM
Zalite, A
Zalite, Y
Zemp, P
Zeng, Y
Zhang, ZP
Zhou, B
Zhou, Y
Zhu, GY
Zhu, RY
Zichichi, A
Ziegler, F
Zilizi, G
AF Acciarri, M
Adriani, O
Aguilar-Benitez, M
Ahlen, S
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Ambrosi, G
Anderhub, H
Andreev, VP
Angelescu, T
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Baksay, L
Ball, RC
Banerjee, S
Banerjee, S
Banicz, K
Barczyk, A
Barillere, R
Barone, L
Bartalini, P
Baschirotto, A
Basile, M
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Bhattacharya, S
Biasini, M
Biland, A
Bilei, GM
Blaising, JJ
Blyth, SC
Bobbink, GJ
Bock, R
Bohm, A
Boldizsar, L
Borgia, B
Bourilkov, D
Bourquin, M
Boutigny, D
Braccini, S
Branson, JG
Brigljevic, V
Brock, IC
Buffini, A
Buijs, A
Burger, JD
Burger, WJ
Busenitz, J
Cai, XD
Campanelli, M
Capell, M
Romeo, GC
Carlino, G
Cartacci, AM
Casaus, J
Castellini, G
Cavallari, F
Cavallo, N
Cecchi, C
Cerrada, M
Cesaroni, F
Chamizo, M
Chang, YH
Chaturvedi, UK
Chekanov, SV
Chemarin, M
Chen, A
Chen, G
Chen, GM
Chen, HF
Chen, HS
Chen, M
Chiefari, G
Chien, CY
Cifarelli, L
Cindolo, F
Civinini, C
Clare, I
Clare, R
Coignet, G
Colijn, AP
Colino, N
Costantini, S
Cotorobai, F
de la Cruz, B
Csilling, A
Dai, TS
D'Alessandro, R
de Asmundis, R
Degre, A
Deiters, K
Denes, P
DeNotaristefani, F
Diemoz, M
van Dierendonck, D
Di Lodovico, F
Dionisi, C
Dittmar, M
Dominguez, A
Doria, A
Dova, MT
Drago, E
Duchesneau, D
Duinker, P
Duran, I
Easo, S
El Mamouni, H
Engler, A
Eppling, FJ
Erne, FC
Ernenwein, JP
Extermann, P
Fabre, M
Faccini, R
Falagan, MA
Falciano, S
Favara, A
Fay, J
Fedin, O
Felcini, M
Ferguson, T
Ferroni, F
Fesefeldt, H
Fiandrini, E
Field, JH
Filthaut, F
Fisher, PH
Fisk, I
Forconi, G
Fredj, L
Freudenreich, K
Furetta, C
Galaktionov, Y
Ganguli, SN
Garcia-Abia, P
Gataullin, M
Gau, SS
Gentile, S
Gerald, J
Gheordanescu, N
Giagu, S
Goldfarb, S
Goldstein, J
Gong, ZF
Gougas, A
Gratta, G
Gruenewald, MW
van Gulik, R
Gupta, VK
Gurtu, A
Gutay, LJ
Haas, D
Hartmann, B
Hasan, A
Hatzifotiadou, D
Hebbeker, T
Herve, A
Hidas, P
Hirschfelder, J
van Hoek, WC
Hofer, H
Hoorani, H
Hou, SR
Hu, G
Iashvili, I
Jin, BN
Jones, LW
de Jong, P
Josa-Mutuberria, I
Kasser, A
Khan, RA
Kamrad, D
Kapustinsky, JS
Karyotakis, Y
Kaur, M
Kienzle-Focacci, MN
Kim, D
Kim, DH
Kim, JK
Kim, SC
Kinnison, WW
Kirkby, A
Kirkby, D
Kirkby, J
Kiss, D
Kittel, W
Klimentov, A
Konig, AC
Kopp, A
Korolko, I
Koutsenko, V
Kraemer, RW
Krenz, W
Kunin, A
Lacentre, P
de Guevara, PL
Landi, G
Lapoint, C
Lassila-Perini, K
Laurikainen, P
Lavorato, A
Lebeau, M
Lebedev, A
Lebrun, P
Lecomte, T
Lecoq, P
Le Coultre, P
Lee, HJ
Leggett, C
Le Goff, JM
Leiste, R
Leonardi, E
Levtchenko, P
Li, C
Lin, CH
Lin, WT
Linde, FL
Lista, L
Liu, ZA
Lohmann, W
Longo, E
Lu, W
Lu, YS
Lubelsmeyer, K
Luci, C
Luckey, D
Luminari, L
Lustermann, W
Ma, WG
Maity, M
Majumder, G
Malgeri, L
Malinin, A
Mana, C
Mangeol, D
Marchesini, P
Marian, G
Marin, A
Martin, JP
Marzano, F
Massaro, GGG
Mazumdar, K
Mele, S
Merola, L
Meschini, M
Metzger, WJ
von der Mey, M
Mi, Y
Migani, D
Mihul, A
van Mil, AJW
Milcent, H
Mirabelli, G
Mnich, J
Molnar, P
Monteleoni, B
Moore, R
Moulik, T
Mount, R
Muheim, F
Muijs, AJM
Nahn, S
Napolitano, M
Nessi-Tedaldi, F
Newman, H
Niessen, T
Nippe, A
Nisati, A
Nowak, H
Oh, YD
Organtini, G
Ostonen, R
Palit, S
Palomares, C
Pandoulas, D
Paoletti, S
Paolucci, P
Park, HK
Park, IH
Pascale, G
Passaleva, G
Patricelli, S
Paul, T
Pauluzzi, M
Paus, C
Pauss, F
Peach, D
Pei, YJ
Pensotti, S
Perret-Gallix, D
Petersen, B
Petrak, S
Pevsner, A
Piccolo, D
Pieri, M
Piroue, PA
Pistolesi, E
Plyaskin, V
Pohl, M
Pojidaev, V
Postema, H
Pothier, J
Produit, N
Prokofiev, D
Quartieri, J
Rahal-Callot, G
Raja, N
Rancoita, PG
Rattaggi, M
Raven, G
Razis, P
Ren, D
Rescigno, M
Reucroft, S
van Rhee, T
Riemann, S
Riles, K
Rind, O
Robohm, A
Rodin, J
Roe, BP
Romero, L
Rosier-Lees, S
Rosselet, P
Roth, S
Rubio, JA
Ruschmeier, D
Rykaczewski, H
Salicio, J
Sanchez, E
Sanders, MP
Sarakinos, ME
Sauvage, G
Schafer, C
Schegelsky, V
Schmidt-Kaerst, S
Schmitz, D
Schneegans, M
Scholz, N
Schopper, H
Schotanus, DJ
Schwenke, J
Schwering, G
Sciacca, C
Sciarrino, D
Servoli, L
Shevchenko, S
Shivarov, N
Shoutko, V
Shukla, J
Shumilov, E
Shvorob, A
Siedenburg, T
Son, D
Soulimov, V
Smith, B
Spillantini, P
Steuer, M
Stickland, DP
Stone, H
Stoyanov, B
Straessner, A
Sudhakar, K
Sultanov, G
Sun, LZ
Susinno, GF
Suter, H
Swain, JD
Tang, XW
Tauscher, L
Taylor, L
Ting, SCC
Ting, SM
Tonwar, SC
Toth, J
Tully, C
Tung, KL
Uchida, Y
Ulbricht, J
Valente, E
Vesztergombi, G
Vetlitsky, I
Viertel, G
Vivargent, M
Vorvolakos, A
Wadhwa, M
Wallraff, W
Wang, JC
Wang, XL
Wang, ZM
Weber, A
Wu, SX
Wynhoff, S
Xu, J
Xu, ZZ
Yang, BZ
Yang, CG
Yang, HJ
Yang, M
Ye, JB
Yeh, SC
You, JM
Zalite, A
Zalite, Y
Zemp, P
Zeng, Y
Zhang, ZP
Zhou, B
Zhou, Y
Zhu, GY
Zhu, RY
Zichichi, A
Ziegler, F
Zilizi, G
CA L3 Collaboration
TI Measurement of the anomalous magnetic and electric dipole moments of the
tau lepton
SO PHYSICS LETTERS B
LA English
DT Article
ID LUND MONTE-CARLO; PAIR PRODUCTION; JET FRAGMENTATION; L3 EXPERIMENT;
E+E-PHYSICS; DETECTOR; COLLISIONS
AB We analyse e(+)e(-) --> tau tau gamma events using 100 pb(-1) of data collected by the L3 experiment during the 1991-1995 LEP runs at the Z pole. From the energy of the photons and their isolation from the tau decay products, we determine the anomalous magnetic and electric dipole moments of the tau to be, respectively:
a(tau) = 0.004 +/- 0.027 +/- 0.023;
d(tau) = (0.0 +/- 1.5 +/- 1.3) x 10(16) e.cm.
This is a direct measurement of these tau form factors at q(2) = 0. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany.
Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany.
NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands.
NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands.
Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands.
Univ Michigan, Ann Arbor, MI 48109 USA.
Lab Annecy Le Vieux Phys Particules, LAPP, IN2P3, CNRS, F-74941 Annecy Le Vieux, France.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Basel, Inst Phys, CH-4056 Basel, Switzerland.
Inst High Energy Phys, Beijing 100039, Peoples R China.
Humboldt Univ, D-10099 Berlin, Germany.
Univ Bologna, I-40126 Bologna, Italy.
INFN, Sez Biol, I-40126 Bologna, Italy.
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
Boston Univ, Boston, MA 02215 USA.
Northeastern Univ, Boston, MA 02115 USA.
Inst Atom Phys, R-76900 Bucharest, Romania.
Univ Bucharest, R-76900 Bucharest, Romania.
Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary.
MIT, Cambridge, MA 02139 USA.
Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy.
Univ Florence, I-50125 Florence, Italy.
CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland.
World Lab, FBLJA Project, CH-1211 Geneva 23, Switzerland.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Chinese Univ Sci & Technol, USTC, Hefei 230029, Anhui, Peoples R China.
SEFT, Res Inst High Energy Phys, SF-00014 Helsinki, Finland.
Univ Lausanne, CH-1015 Lausanne, Switzerland.
Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy.
Univ Lecce, I-73100 Lecce, Italy.
Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France.
CIEMAT, E-28040 Madrid, Spain.
Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy.
Univ Naples Federico II, I-80125 Naples, Italy.
Univ Cyprus, Dept Nat Sci, Nicosia, Cyprus.
Catholic Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands.
Natl Inst Nucl Phys & High Energy Phys, NL-6525 ED Nijmegen, Netherlands.
CALTECH, Pasadena, CA 91125 USA.
Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
Univ Perugia, I-06100 Perugia, Italy.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Princeton Univ, Princeton, NJ 08544 USA.
Univ Rome, I-00185 Rome, Italy.
INFN, Sez Roma, I-00185 Rome, Italy.
Inst Phys Nucl, St Petersburg, Russia.
Univ Salerno, I-84100 Salerno, Italy.
INFN, I-84100 Salerno, Italy.
Univ Calif San Diego, La Jolla, CA 92093 USA.
Univ Santiago, Dept Fis Particulas Elementales, E-15706 Santiago, Spain.
Bulgarian Acad Sci, Cent Lab Mech & Instrumentat, BU-1113 Sofia, Bulgaria.
Korea Adv Inst Sci & Technol, Ctr High Energy Phys, Taejon 305701, South Korea.
Univ Alabama, Tuscaloosa, AL 35486 USA.
Univ Utrecht, NL-3584 CB Utrecht, Netherlands.
NIKHEF H, NL-3584 CB Utrecht, Netherlands.
Purdue Univ, W Lafayette, IN 47907 USA.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
DESY, Inst Hochenergiephys, D-15738 Zeuthen, Germany.
Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.
Univ Hamburg, D-22761 Hamburg, Germany.
Natl Cent Univ, Chungli 32054, Taiwan.
Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan.
RP Acciarri, M (reprint author), Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany.
RI Fiandrini, Emanuele/C-4549-2008; D'Alessandro, Raffaello/F-5897-2015;
Lista, Luca/C-5719-2008; Kirkby, Jasper/A-4973-2012; Servoli,
Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cavallo,
Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; Josa,
Isabel/K-5184-2014; de la Cruz, Begona/K-7552-2014; Vogel,
Helmut/N-8882-2014; Ferguson, Thomas/O-3444-2014; Berdugo,
Javier/A-2858-2015; Sanchez, Eusebio/H-5228-2015; Duran,
Ignacio/H-7254-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani,
Hafeez/D-1791-2013; Palomares, Carmen/H-7783-2015; Fedin,
Oleg/H-6753-2016; Roth, Stefan/J-2757-2016; Di Lodovico,
Francesca/L-9109-2016; Yang, Haijun/O-1055-2015;
OI D'Alessandro, Raffaello/0000-0001-7997-0306; Kirkby,
Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185;
Cerrada, Marcos/0000-0003-0112-1691; Vogel, Helmut/0000-0002-6109-3023;
Ferguson, Thomas/0000-0001-5822-3731; Berdugo,
Javier/0000-0002-7911-8532; Sanchez, Eusebio/0000-0002-9646-8198;
Rancoita, Pier Giorgio/0000-0002-1990-4283; Palomares,
Carmen/0000-0003-4374-9065; Roth, Stefan/0000-0003-3616-2223; Di
Lodovico, Francesca/0000-0003-3952-2175; Ambrosi,
Giovanni/0000-0001-6977-9559; Longo, Egidio/0000-0001-6238-6787;
Castellini, Guido/0000-0002-0177-0643; Diemoz,
Marcella/0000-0002-3810-8530; Doria, Alessandra/0000-0002-5381-2649;
Sciacca, Crisostomo/0000-0002-8412-4072; Kirkby,
David/0000-0002-8828-5463; Faccini, Riccardo/0000-0003-2613-5141;
Bertucci, Bruna/0000-0001-7584-293X; Filthaut,
Frank/0000-0003-3338-2247; Goldstein, Joel/0000-0003-1591-6014
NR 22
TC 51
Z9 51
U1 1
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD AUG 20
PY 1998
VL 434
IS 1-2
BP 169
EP 179
DI 10.1016/S0370-2693(98)00736-9
PG 11
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 119DB
UT WOS:000075879200027
ER
PT J
AU Breitweg, J
Derrick, M
Krakauer, D
Magill, S
Mikunas, D
Musgrave, B
Repond, J
Stanek, R
Talaga, RL
Yoshida, R
Zhang, H
Mattingly, MCK
Anselmo, F
Antonioli, P
Bari, G
Basile, M
Bellagamba, L
Boscherini, D
Bruni, A
Bruni, G
Romeo, GC
Castellini, G
Cifarelli, L
Cindolo, F
Contin, A
Coppola, N
Corradi, M
De Pasquale, S
Giusti, P
Iacobucci, G
Laurenti, G
Levi, G
Margotti, A
Massam, T
Nania, R
Palmonari, F
Pesci, A
Polini, A
Sartorelli, G
Garcia, YZ
Zichichi, A
Amelung, C
Bornheim, A
Brock, I
Coboken, K
Crittenden, J
Deffner, R
Eckert, M
Grothe, M
Hartmann, H
Heinloth, K
Heinz, L
Hilger, E
Jakob, HP
Kappes, A
Katz, UF
Kerger, R
Paul, E
Pfeiffer, M
Stamm, J
Wieber, H
Bailey, DS
Campbell-Robson, S
Cottingham, WN
Foster, B
Hall-Wilton, R
Heath, GP
Heath, HF
McFall, JD
Piccioni, D
Roff, DG
Tapper, RJ
Capua, M
Iannotti, L
Schioppa, M
Susinno, G
Kim, JY
Lee, JH
Lim, IT
Pac, MY
Caldwell, A
Cartiglia, N
Jing, Z
Liu, W
Mellado, B
Parsons, JA
Ritz, S
Sampson, S
Sciulli, F
Straub, PB
Zhu, Q
Borzemski, P
Chwastowski, J
Eskreys, A
Figiel, J
Klimek, K
Przybycien, MB
Zawiejski, L
Adamczyk, L
Bednarek, B
Bukowy, M
Czermak, AM
Jelen, K
Kisielewska, D
Kowalski, T
Przybycien, M
Rulikowska-Zarebska, E
Suszycki, L
Zajac, J
Dulinski, Z
Kotanski, A
Abbiendi, G
Bauerdick, LAT
Behrens, U
Beier, H
Bienlein, JK
Desler, K
Drews, G
Fricke, U
Gialas, I
Goebel, F
Gottlicher, P
Graciani, R
Haas, T
Hain, W
Hartner, GF
Hasell, D
Hebbel, K
Johnson, KF
Kasemann, M
Koch, W
Kotz, U
Kowalski, H
Lindemann, L
Lohr, B
Martinez, M
Milewski, J
Milite, M
Monteiro, T
Notz, D
Pellegrino, A
Pelucchi, F
Piotrzkowski, K
Rohde, M
Roldan, J
Ryan, JJ
Saull, PRB
Savin, AA
Schneekloth, U
Schwarzer, O
Selonke, F
Stonjek, S
Surrow, B
Tassi, E
Westphal, D
Wolf, G
Wollmer, U
Youngman, C
Zeuner, W
Burow, BD
Coldewey, C
Grabosch, HJ
Meyer, A
Schlenstedt, S
Barbagli, G
Gallo, E
Pelfer, P
Maccarrone, G
Votano, L
Bamberger, A
Eisenhardt, S
Markun, P
Raach, H
Trefzger, T
Wolfle, S
Bromley, JT
Brook, NH
Bussey, PJ
Doyle, AT
Lee, SW
Macdonald, N
McCance, GJ
Saxon, DH
Sinclair, LE
Skillicorn, IO
Strickland, E
Waugh, R
Bohnet, I
Gendner, N
Holm, U
Meyer-Larsen, A
Salehi, H
Wick, K
Garfagnini, A
Gladilin, LK
Kcira, D
Klanner, R
Lohrmann, E
Poelz, C
Zetsche, F
Bacon, TC
Butterworth, I
Cole, JE
Howell, G
Lamberti, L
Long, KR
Miller, DB
Pavel, N
Prinias, A
Sedgbeer, JK
Sideris, D
Walker, R
Mallik, U
Wang, SM
Wu, JT
Cloth, P
Filges, D
Fleck, JI
Ishii, T
Kuze, M
Suzuki, I
Tokushuku, K
Yamada, S
Yamauchi, K
Yamazaki, Y
Hong, SJ
Lee, SB
Nam, SW
Park, SK
Lim, H
Park, IH
Son, D
Barreiro, F
Fernandez, JP
Garcia, G
Glasman, C
Hernandez, JM
Hervas, L
Labarga, L
del Peso, J
Puga, J
Terron, J
de Troconiz, JF
Corriveau, F
Hanna, DS
Hartmann, J
Hung, LW
Murray, WN
Ochs, A
Riveline, M
Stairs, DG
St-Laurent, M
Ullmann, R
Tsurugai, T
Bashkirov, V
Dolgoshein, BA
Stifutkin, A
Bashindzhagyan, GL
Ermolov, PF
Golubkov, YA
Khein, LA
Korotkova, NA
Korzhavina, IA
Kuzmin, VA
Lukina, OY
Proskuryakov, AS
Shcheglova, LM
Solomin, AN
Zotkin, SA
Bokel, C
Botje, M
Brummer, N
Engelen, J
Koffeman, E
Kooijman, P
van Sighem, A
Tiecke, H
Tuning, N
Verkerke, W
Vossebeld, J
Wiggers, I
de Wolf, E
Acosta, D
Bylsma, B
Durkin, LS
Gilmore, J
Ginsburg, CM
Kim, CL
Ling, TY
Nylander, P
Romanowski, TA
Blaikley, HE
Cashmore, RJ
Cooper-Sarkar, AM
Devenish, RCE
Edmonds, JK
Grosse-Knetter, J
Harnew, N
Nath, C
Noyes, VA
Quadt, A
Ruske, O
Tickner, JR
Walczak, R
Waters, DS
Bertolin, A
Brugnera, R
Carlin, R
Dal Corso, F
Dosselli, U
Limentani, S
Morandin, M
Posocco, M
Stanco, L
Stroili, R
Voci, C
Bulmahn, J
Oh, BY
Okrasinski, JR
Toothacker, WS
Whitmore, JJ
Iga, Y
D'Agostini, G
Marini, G
Nigro, A
Raso, M
Hart, JC
McCubbin, NA
Shah, TP
Epperson, D
Heusch, C
Rahn, JT
Sadrozinski, HFW
Seiden, A
Wichmann, R
Williams, DC
Abramowicz, H
Briskin, G
Dagan, S
Kananov, S
Levy, A
Abe, T
Fusayasu, T
Inuzuka, M
Nagano, K
Umemori, K
Yamashita, T
Hamatsu, R
Hirose, T
Homma, K
Kitamura, S
Matsushita, T
Arneodo, M
Cirio, R
Costa, M
Ferrero, MI
Maselli, S
Monaco, V
Peroni, C
Petrucci, MC
Ruspa, M
Sacchi, R
Solano, A
Staiano, A
Dardo, M
Bailey, DC
Fagerstroem, CP
Galea, R
Joo, KK
Levman, GM
Orr, JFMRS
Polenz, S
Sabetfakhri, A
Simmons, D
Butterworth, JM
Catterall, CD
Hayes, ME
Jones, TW
Lane, JB
Saunders, RL
Sutton, MR
Wing, M
Ciborowski, J
Grzelak, G
Kasprzak, M
Nowak, RJ
Pawlak, JM
Pawlak, R
Smalska, B
Tymieniecka, T
Wroblewski, AK
Zakrzewski, JA
Zarnecki, AF
Adamus, M
Deppe, O
Eisenberg, Y
Hochman, D
Karshon, U
Badgett, WF
Chapin, D
Cross, R
Dasu, S
Foudas, C
Loveless, RJ
Mattingly, S
Reeder, DD
Smith, WH
Vaiciulis, A
Wodarczyk, M
Deshpande, A
Dhawan, S
Hughes, VW
Bhadra, S
Frisken, WR
Khakzad, M
Schmidke, WB
AF Breitweg, J
Derrick, M
Krakauer, D
Magill, S
Mikunas, D
Musgrave, B
Repond, J
Stanek, R
Talaga, RL
Yoshida, R
Zhang, H
Mattingly, MCK
Anselmo, F
Antonioli, P
Bari, G
Basile, M
Bellagamba, L
Boscherini, D
Bruni, A
Bruni, G
Romeo, GC
Castellini, G
Cifarelli, L
Cindolo, F
Contin, A
Coppola, N
Corradi, M
De Pasquale, S
Giusti, P
Iacobucci, G
Laurenti, G
Levi, G
Margotti, A
Massam, T
Nania, R
Palmonari, F
Pesci, A
Polini, A
Sartorelli, G
Garcia, YZ
Zichichi, A
Amelung, C
Bornheim, A
Brock, I
Coboken, K
Crittenden, J
Deffner, R
Eckert, M
Grothe, M
Hartmann, H
Heinloth, K
Heinz, L
Hilger, E
Jakob, HP
Kappes, A
Katz, UF
Kerger, R
Paul, E
Pfeiffer, M
Stamm, J
Wieber, H
Bailey, DS
Campbell-Robson, S
Cottingham, WN
Foster, B
Hall-Wilton, R
Heath, GP
Heath, HF
McFall, JD
Piccioni, D
Roff, DG
Tapper, RJ
Capua, M
Iannotti, L
Schioppa, M
Susinno, G
Kim, JY
Lee, JH
Lim, IT
Pac, MY
Caldwell, A
Cartiglia, N
Jing, Z
Liu, W
Mellado, B
Parsons, JA
Ritz, S
Sampson, S
Sciulli, F
Straub, PB
Zhu, Q
Borzemski, P
Chwastowski, J
Eskreys, A
Figiel, J
Klimek, K
Przybycien, MB
Zawiejski, L
Adamczyk, L
Bednarek, B
Bukowy, M
Czermak, AM
Jelen, K
Kisielewska, D
Kowalski, T
Przybycien, M
Rulikowska-Zarebska, E
Suszycki, L
Zajac, J
Dulinski, Z
Kotanski, A
Abbiendi, G
Bauerdick, LAT
Behrens, U
Beier, H
Bienlein, JK
Desler, K
Drews, G
Fricke, U
Gialas, I
Goebel, F
Gottlicher, P
Graciani, R
Haas, T
Hain, W
Hartner, GF
Hasell, D
Hebbel, K
Johnson, KF
Kasemann, M
Koch, W
Kotz, U
Kowalski, H
Lindemann, L
Lohr, B
Martinez, M
Milewski, J
Milite, M
Monteiro, T
Notz, D
Pellegrino, A
Pelucchi, F
Piotrzkowski, K
Rohde, M
Roldan, J
Ryan, JJ
Saull, PRB
Savin, AA
Schneekloth, U
Schwarzer, O
Selonke, F
Stonjek, S
Surrow, B
Tassi, E
Westphal, D
Wolf, G
Wollmer, U
Youngman, C
Zeuner, W
Burow, BD
Coldewey, C
Grabosch, HJ
Meyer, A
Schlenstedt, S
Barbagli, G
Gallo, E
Pelfer, P
Maccarrone, G
Votano, L
Bamberger, A
Eisenhardt, S
Markun, P
Raach, H
Trefzger, T
Wolfle, S
Bromley, JT
Brook, NH
Bussey, PJ
Doyle, AT
Lee, SW
Macdonald, N
McCance, GJ
Saxon, DH
Sinclair, LE
Skillicorn, IO
Strickland, E
Waugh, R
Bohnet, I
Gendner, N
Holm, U
Meyer-Larsen, A
Salehi, H
Wick, K
Garfagnini, A
Gladilin, LK
Kcira, D
Klanner, R
Lohrmann, E
Poelz, C
Zetsche, F
Bacon, TC
Butterworth, I
Cole, JE
Howell, G
Lamberti, L
Long, KR
Miller, DB
Pavel, N
Prinias, A
Sedgbeer, JK
Sideris, D
Walker, R
Mallik, U
Wang, SM
Wu, JT
Cloth, P
Filges, D
Fleck, JI
Ishii, T
Kuze, M
Suzuki, I
Tokushuku, K
Yamada, S
Yamauchi, K
Yamazaki, Y
Hong, SJ
Lee, SB
Nam, SW
Park, SK
Lim, H
Park, IH
Son, D
Barreiro, F
Fernandez, JP
Garcia, G
Glasman, C
Hernandez, JM
Hervas, L
Labarga, L
del Peso, J
Puga, J
Terron, J
de Troconiz, JF
Corriveau, F
Hanna, DS
Hartmann, J
Hung, LW
Murray, WN
Ochs, A
Riveline, M
Stairs, DG
St-Laurent, M
Ullmann, R
Tsurugai, T
Bashkirov, V
Dolgoshein, BA
Stifutkin, A
Bashindzhagyan, GL
Ermolov, PF
Golubkov, YA
Khein, LA
Korotkova, NA
Korzhavina, IA
Kuzmin, VA
Lukina, OY
Proskuryakov, AS
Shcheglova, LM
Solomin, AN
Zotkin, SA
Bokel, C
Botje, M
Brummer, N
Engelen, J
Koffeman, E
Kooijman, P
van Sighem, A
Tiecke, H
Tuning, N
Verkerke, W
Vossebeld, J
Wiggers, I
de Wolf, E
Acosta, D
Bylsma, B
Durkin, LS
Gilmore, J
Ginsburg, CM
Kim, CL
Ling, TY
Nylander, P
Romanowski, TA
Blaikley, HE
Cashmore, RJ
Cooper-Sarkar, AM
Devenish, RCE
Edmonds, JK
Grosse-Knetter, J
Harnew, N
Nath, C
Noyes, VA
Quadt, A
Ruske, O
Tickner, JR
Walczak, R
Waters, DS
Bertolin, A
Brugnera, R
Carlin, R
Dal Corso, F
Dosselli, U
Limentani, S
Morandin, M
Posocco, M
Stanco, L
Stroili, R
Voci, C
Bulmahn, J
Oh, BY
Okrasinski, JR
Toothacker, WS
Whitmore, JJ
Iga, Y
D'Agostini, G
Marini, G
Nigro, A
Raso, M
Hart, JC
McCubbin, NA
Shah, TP
Epperson, D
Heusch, C
Rahn, JT
Sadrozinski, HFW
Seiden, A
Wichmann, R
Williams, DC
Abramowicz, H
Briskin, G
Dagan, S
Kananov, S
Levy, A
Abe, T
Fusayasu, T
Inuzuka, M
Nagano, K
Umemori, K
Yamashita, T
Hamatsu, R
Hirose, T
Homma, K
Kitamura, S
Matsushita, T
Arneodo, M
Cirio, R
Costa, M
Ferrero, MI
Maselli, S
Monaco, V
Peroni, C
Petrucci, MC
Ruspa, M
Sacchi, R
Solano, A
Staiano, A
Dardo, M
Bailey, DC
Fagerstroem, CP
Galea, R
Joo, KK
Levman, GM
Orr, JFMRS
Polenz, S
Sabetfakhri, A
Simmons, D
Butterworth, JM
Catterall, CD
Hayes, ME
Jones, TW
Lane, JB
Saunders, RL
Sutton, MR
Wing, M
Ciborowski, J
Grzelak, G
Kasprzak, M
Nowak, RJ
Pawlak, JM
Pawlak, R
Smalska, B
Tymieniecka, T
Wroblewski, AK
Zakrzewski, JA
Zarnecki, AF
Adamus, M
Deppe, O
Eisenberg, Y
Hochman, D
Karshon, U
Badgett, WF
Chapin, D
Cross, R
Dasu, S
Foudas, C
Loveless, RJ
Mattingly, S
Reeder, DD
Smith, WH
Vaiciulis, A
Wodarczyk, M
Deshpande, A
Dhawan, S
Hughes, VW
Bhadra, S
Frisken, WR
Khakzad, M
Schmidke, WB
CA ZEUS Collaboration
TI Search for selectron and squark production in e(+)p collisions at HERA
SO PHYSICS LETTERS B
LA English
DT Article
ID MONTE-CARLO GENERATOR; ENERGY EP COLLISIONS; PARTON DISTRIBUTIONS;
E(+)E(-) COLLISIONS; JET FRAGMENTATION; EVENT GENERATOR; E+E-PHYSICS;
MODEL; SUPERSYMMETRY; SUPERGRAVITY
AB We have searched for the production of a selectron and a squark in e(+)p collisions at a center-of-mass energy of 300 GeV using the ZEUS detector at HERA. The selectron and squark are sought in the direct decay into the lightest neutralino in the framework of supersymmetric extensions to the Standard Model which conserve R-parity. No evidence for the production of supersymmetric particles has been found in a data sample corresponding to 46.6 pb(-1) of integrated luminosity. We express upper limits on the product of the cross section times the decay branching ratios as excluded regions in the parameter space of the Minimal Supersymmetric Standard Model. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
Andrews Univ, Berrien Springs, MI 49104 USA.
Univ Bologna, Bologna, Italy.
Ist Nazl Fis Nucl, I-40126 Bologna, Italy.
Univ Bonn, Inst Phys, D-5300 Bonn, Germany.
Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England.
Univ Calabria, Dept Phys, I-87036 Cosenza, Italy.
Ist Nazl Fis Nucl, Cosenza, Italy.
Chonnam Natl Univ, Kwangju, South Korea.
Columbia Univ, Nevis Labs, Irvington, NY USA.
Inst Nucl Phys, Krakow, Poland.
Acad Min & Met, Fac Phys & Nucl Techniques, Krakow, Poland.
Jagiellonian Univ, Dept Phys, Krakow, Poland.
DESY, D-2000 Hamburg, Germany.
IFN Zeuthen, DESY, Zeuthen, Germany.
Univ Florence, Florence, Italy.
Ist Nazl Fis Nucl, I-50125 Florence, Italy.
Ist Nazl Fis Nucl, Nazl Frascati Lab, I-00044 Frascati, Italy.
Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany.
Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland.
Univ Hamburg, Inst Exp Phys 1, Hamburg, Germany.
Univ Hamburg, Inst Expt Phys 2, D-2000 Hamburg, Germany.
Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England.
Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
Forschungszentrum Julich, Inst Kernphys, Julich, Germany.
KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan.
Korea Univ, Seoul 136701, South Korea.
Kyungpook Natl Univ, Taegu 702701, South Korea.
Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain.
McGill Univ, Dept Phys, Montreal, PQ, Canada.
Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan.
Moscow Engn Phys Inst, Moscow 115409, Russia.
Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia.
Univ Amsterdam, Amsterdam, Netherlands.
NIKHEF H, NL-1009 DB Amsterdam, Netherlands.
Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
Univ Oxford, Dept Phys, Oxford OX1 2JD, England.
Univ Padua, Dipartimento Fis, Padua, Italy.
Ist Nazl Fis Nucl, Padua, Italy.
Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
Polytech Univ, Sagamihara, Kanagawa, Japan.
Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
Ist Nazl Fis Nucl, Rome, Italy.
Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA.
Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel.
Univ Tokyo, Dept Phys, Tokyo 113, Japan.
Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan.
Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy.
Ist Nazl Fis Nucl, I-10125 Turin, Italy.
Univ Turin, Fac Sci 2, Alessandria, Italy.
Ist Nazl Fis Nucl, Alessandria, Italy.
Univ Toronto, Dept Phys, Toronto, ON, Canada.
UCL, Dept Phys & Astron, London, England.
Univ Warsaw, Inst Expt Phys, Warsaw, Poland.
Inst Nucl Studies, PL-00681 Warsaw, Poland.
Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel.
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
Yale Univ, Dept Phys, New Haven, CT USA.
York Univ, Dept Phys, N York, ON M3J 1P3, Canada.
CNR, IROE, I-50127 Florence, Italy.
RP Breitweg, J (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA.
RI Capua, Marcella/A-8549-2015; De Pasquale, Salvatore/B-9165-2008; Wing,
Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle,
Anthony/C-5889-2009; Golubkov, Yury/E-1643-2012; Proskuryakov,
Alexander/J-6166-2012; Katz, Uli/E-1925-2013; Hernandez Calama, Jose
Maria/H-9127-2015; Tassi, Enrico/K-3958-2015; Gladilin,
Leonid/B-5226-2011; Morandin, Mauro/A-3308-2016; Solomin,
Anatoly/C-3072-2016
OI Bailey, David C/0000-0002-7970-7839; Castellini,
Guido/0000-0002-0177-0643; Kasemann, Matthias/0000-0002-0429-2448;
Capua, Marcella/0000-0002-2443-6525; Arneodo,
Michele/0000-0002-7790-7132; Abbiendi, Giovanni/0000-0003-4499-7562;
Graciani Diaz, Ricardo/0000-0001-7166-5198; De Pasquale,
Salvatore/0000-0001-9236-0748; Doyle, Anthony/0000-0001-6322-6195; Katz,
Uli/0000-0002-7063-4418; Hernandez Calama, Jose
Maria/0000-0001-6436-7547; Gladilin, Leonid/0000-0001-9422-8636;
Morandin, Mauro/0000-0003-4708-4240;
NR 48
TC 9
Z9 9
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
J9 PHYS LETT B
JI Phys. Lett. B
PD AUG 20
PY 1998
VL 434
IS 1-2
BP 214
EP 230
DI 10.1016/S0370-2693(98)00817-X
PG 17
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 119DB
UT WOS:000075879200032
ER
PT J
AU Diercks, R
Eaton, BE
Gurtzgen, S
Jalisatgi, S
Matzger, AJ
Radde, RH
Vollhardt, KPC
AF Diercks, R
Eaton, BE
Gurtzgen, S
Jalisatgi, S
Matzger, AJ
Radde, RH
Vollhardt, KPC
TI The first metallacyclopentadiene(alkyne) complexes and their discrete
isomerization to eta 4-bound arenes: The missing link in the prevalent
mechanism of transition metal catalyzed alkyne cyclotrimerizations, as
exemplified by cyclopentadienylcobalt
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID CRYSTAL-STRUCTURE; CYCLOADDITION REACTIONS; COBALT METALLACYCLES;
MOLECULAR-STRUCTURES; SUBSTITUTED ALKYNES; COBALTACYCLOPENTADIENE;
LIGANDS; RHODIUM; CYCLIZATION; MOLYBDENUM
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Vollhardt, KPC (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI Matzger, Adam/G-7497-2016
OI Matzger, Adam/0000-0002-4926-2752
NR 57
TC 86
Z9 86
U1 1
U2 9
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD AUG 19
PY 1998
VL 120
IS 32
BP 8247
EP 8248
DI 10.1021/ja981766q
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 113LX
UT WOS:000075553400030
ER
PT J
AU Firestone, MA
Thiyagarajan, P
Tiede, DM
AF Firestone, MA
Thiyagarajan, P
Tiede, DM
TI Structure and optical properties of a thermoresponsive polymer-grafted,
lipid-based complex fluid
SO LANGMUIR
LA English
DT Article
ID HEXAGONAL-HII PHASE; X-RAY-DIFFRACTION; PHOSPHOLIPID-MEMBRANES;
POLYETHYLENE-GLYCOL; CUBIC PHASES; BILAYERS; TRANSITION; GELS; SYSTEMS;
POLYMORPHISM
AB We report herein an example of a self-assembling, stimulus-responsive complex fluid that snitches between two distinct structural (two-dimensional (2-D) to one-dimensional supramolecular architecture) and functional (fluid to gel and nonbirefringent to birefringent) states in response to modest temperature changes. This complex fluid is formed by the noncovalent self-assembly of a quaternary mixture of a phospholipid, dimyristolyphosphatidylcholine (DMPC), a lipopolymer consisting of poly(ethylene oxide) terminally grafted onto the phosphate headgroup of DMPE (DMPE-EO45), and a cosurfactant, lauryldimethylamine N-oxide (LDAO), dispersed in water. The supramolecular assembly formed by this mixture has been found to undergo a reversible transformation from a liquid-crystalline gel to a nonbirefringent fluid upon reduction in temperature. The onset of the thermotropic phase transition has been determined to be 16 degrees C by differential scanning calorimetry(DSC). The structural organization(i.e., the supramolecular architecture) of the noncovalent aggregate above and below this phase transition has been probed on a range of length scales (i.e., macrosopic, mesoscopic, and nanoscopic) using polarized optical microscopy (POM), small angle neutron scattering (SANS), transmission Fourier transform infrared (FT-IR) spectroscopy, and phosphorus-31 nuclear magnetic resonance (P-31 NMR) spectroscopy. The line shape of the P-31 NMR resonance of the fluid phase indicates hexagonal structural ordering. Low-resolution crystallographic structure analysis using SANS confirms the 31P NMR findings, indicating that the structure consists of a 2-D hexagonal (space group p6m) array of cylinders with the distance between the center of adjacent tubes (i.e., lattice spacing) of 345 Angstrom. The topology of the phase has been found to be a normal hexagonal structure, H-1, in which the hydrocarbon chains fill the interior of the cylinders, and the cylinders are immersed in a water continuum. The absence of birefringence in the fluid phase under crossed polarizers is believed to arise from the shortened axis of the cylinders. Structural characterization by 31P NMR and SANS demonstrates that the gel phase comprises microdomains of lamellae with a lattice spacing of 153 Angstrom. The lamellar structure, however, is a high defect structure, as evidenced by POM and the broad Bragg peaks in the small-angle neutron diffraction profile. Evaluation of the conformational state of the hydrocarbon chains by transmission FT-IR spectroscopy indicates high gauche content (type alpha), providing evidence that gelation is not a consequence of alkyl chain ordering.
C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
RP Firestone, MA (reprint author), Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
EM firestone@anlchm.chm.anl.gov
NR 73
TC 34
Z9 37
U1 1
U2 19
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD AUG 18
PY 1998
VL 14
IS 17
BP 4688
EP 4698
DI 10.1021/la9805995
PG 11
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 112GD
UT WOS:000075485000004
ER
PT J
AU Pollitt, SK
Schultz, PG
AF Pollitt, SK
Schultz, PG
TI A photochemical switch for controlling protein-protein interactions
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE amino acids; mutagenesis; photochemistry; ras proteins; signal
transduction
ID MAGNETIC CIRCULAR-DICHROISM; NONHEME IRON ENZYMES; SOYBEAN
LIPOXYGENASE-1; ACTIVE-SITES; SPECTROSCOPY; ACTIVATION; COMPLEX; SPIN;
DOMAIN; LIGAND
C1 Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Schultz, PG (reprint author), Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
NR 34
TC 29
Z9 29
U1 1
U2 2
PU WILEY-V C H VERLAG GMBH
PI BERLIN
PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY
SN 1433-7851
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PD AUG 17
PY 1998
VL 37
IS 15
BP 2104
EP 2107
DI 10.1002/(SICI)1521-3773(19980817)37:15<2104::AID-ANIE2104>3.0.CO;2-Z
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 113CR
UT WOS:000075532600016
ER
PT J
AU Misra, A
Fayeulle, S
Kung, H
Mitchell, TE
Nastasi, M
AF Misra, A
Fayeulle, S
Kung, H
Mitchell, TE
Nastasi, M
TI Effects of ion irradiation on the residual stresses in Cr thin films
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID BOMBARDMENT; RELAXATION
AB Cr films sputtered onto {100} Si substrates at room temperature were found to be under residual tension, as revealed by wafer curvature measurements. A 150 nm thick Cr film was bombarded with 300 keV Ar ions after deposition. The intrinsic residual tensile stress increased slightly and then decreased with further increase in the ion dose. For ion doses >1 x 1015 ions/cm2, the stress in the film became compressive and increased with increasing dose. Transmission electron microscopy revealed that the grain boundaries in as-deposited Cr have columnar porosity. A Cr film, ion irradiated to a dose of 5 x 1015 ions/cm2, showed no grain boundary porosity. The changes in the residual stress during ion irradiation are explained by considering Ar incorporation in the film and the manner the manner in which irradiation may change the interatomic distances and forces. (C) 1998 American Institute of Physics.
C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Misra, A (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
EM amisra@lanl.gov
RI Misra, Amit/H-1087-2012
NR 13
TC 22
Z9 22
U1 1
U2 6
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 17
PY 1998
VL 73
IS 7
BP 891
EP 893
DI 10.1063/1.122029
PG 3
WC Physics, Applied
SC Physics
GA 111QK
UT WOS:000075449000010
ER
PT J
AU Takeuchi, I
Chang, H
Gao, C
Schultz, PG
Xiang, XD
Sharma, RP
Downes, MJ
Venkatesan, T
AF Takeuchi, I
Chang, H
Gao, C
Schultz, PG
Xiang, XD
Sharma, RP
Downes, MJ
Venkatesan, T
TI Combinatorial synthesis and evaluation of epitaxial ferroelectric device
libraries
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID THIN-FILMS; DEPOSITION
AB Combinatorial libraries of parallel-plate capacitors, consisting of Pt and La0.5Sr0.5CoO3 electrodes and a doped BaxSr1-xTiO3 dielectric layer, have been fabricated and analyzed to systematically study the effects of dopants on device performance. Epitaxial heterostructure libraries with sharp interfaces were generated from amorphous layers on LaAlO3 substrates. Two hundred and forty different host/dopant combinations were synthesized on a 1/2 in. by 1/2 in, substrate, with 23 capacitors for each combination. Addition of 1.5 mol % W was found to increase the figure of merit (epsilon/I-leak) 220-fold and reduce the high-frequency (MHz and GHz) loss tangent by fourfold. (C) 1998 American Institute of Physics.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
RP Xiang, XD (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RI Xiang, Xiaodong/A-9445-2012; Venkatesan, Thirumalai/E-1667-2013; Xiang,
Xiaodong/A-5936-2017
NR 9
TC 63
Z9 68
U1 0
U2 10
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 17
PY 1998
VL 73
IS 7
BP 894
EP 896
DI 10.1063/1.122030
PG 3
WC Physics, Applied
SC Physics
GA 111QK
UT WOS:000075449000011
ER
PT J
AU Jia, QX
Findikoglu, AT
Reagor, D
Lu, P
AF Jia, QX
Findikoglu, AT
Reagor, D
Lu, P
TI Improvement in performance of electrically tunable devices based on
nonlinear dielectric SrTiO3 using a homoepitaxial LaAlO3 interlayer
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID THIN-FILM; YBA2CU3O7-X
AB Improved structural and dielectric properties of nonlinear dielectric SrTiO3 thin films on LaAlO3 substrates were accomplished by incorporating a homoepitaxial LaAlO3 interlayer between the substrate and the dielectric film. Using this interlayer, the duality factor of SrTiO3 films with high-temperature superconducting YBa2CU3O7-x electrodes on LaAlO3 substrates was improved by more than 50% at 4.2 GHz and 4 K. This improvement, combined with no change in nonlinearity, led to greater than a 50% enhancement of the finesse factor (defined as the product of the quality factor and the fractional shift resonant frequency) for the coplanar waveguide microwave resonators. The reduced planar defect density in the SrTiO3 films was attributed to this improvement. (C) 1998 American Institute of Physics.
C1 Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA.
New Mexico Inst Min & Technol, Dept Mat Sci & Engn, Socorro, NM 87801 USA.
RP Los Alamos Natl Lab, Superconduct Technol Ctr, Mail Stop K763, Los Alamos, NM 87545 USA.
EM qxjia@lanl.gov
RI Jia, Q. X./C-5194-2008
NR 12
TC 54
Z9 55
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0003-6951
EI 1077-3118
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 17
PY 1998
VL 73
IS 7
BP 897
EP 899
DI 10.1063/1.122031
PG 3
WC Physics, Applied
SC Physics
GA 111QK
UT WOS:000075449000012
ER
PT J
AU Floro, JA
Chason, E
Sinclair, MB
Freund, LB
Lucadamo, GA
AF Floro, JA
Chason, E
Sinclair, MB
Freund, LB
Lucadamo, GA
TI Dynamic self-organization of strained islands during SiGe epitaxial
growth
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID HETEROEPITAXIAL GROWTH; COHERENT; RELAXATION; GE
AB Dynamic self-organization of coherently strained islands during SiGe molecular beam epitaxy on Si(001) is measured in real time using a novel spectroscopic light scattering technique. We show that an array of hut clusters self-orders on a square mesh with increasing areal coverage. Ordering occurs to minimize the repulsive elastic interactions between neighboring islands. Self-organization breaks down when islands coalesce during deposition or during static coarsening. (C) 1998 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
Brown Univ, Div Engn, Providence, RI 02912 USA.
Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA.
RP Floro, JA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 16
TC 52
Z9 52
U1 0
U2 4
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 17
PY 1998
VL 73
IS 7
BP 951
EP 953
DI 10.1063/1.122049
PG 3
WC Physics, Applied
SC Physics
GA 111QK
UT WOS:000075449000030
ER
PT J
AU Cullen, DM
Reed, AT
Appelbe, DE
Wilson, AN
Paul, ES
Clark, RM
Fallon, P
Lee, IY
Macchiavelli, AO
MacLeod, RW
AF Cullen, DM
Reed, AT
Appelbe, DE
Wilson, AN
Paul, ES
Clark, RM
Fallon, P
Lee, IY
Macchiavelli, AO
MacLeod, RW
TI High-K decays and lifetime measurements in Hf-172
SO NUCLEAR PHYSICS A
LA English
DT Article
DE Te-128(Ca-48,4n); E=200 MeV; measured E-gamma, I-gamma, I-gamma
gamma(theta); Hf-172 deduced high-spin levels; I, pi; band structure;
high-K isomers; vertical bar gK-gR vertical bar Q(o) values; Doppler
Shift Attenuation measurement of mean lifetimes of collective states;
transition quadrupole moments; reduced hindrance factors; comparison
with Woods-Saxon cranking calculations; enriched targets; GAMMASPHERE
spectrometer
ID HIGH-SPIN STATES; MULTI-QUASI-PARTICLE; FORBIDDEN TRANSITIONS; BARRIER
PENETRATION; SUPERDEFORMED BANDS; ISOMER DECAYS; ALIGNMENT; SELECTION;
NUCLEI; RATES
AB The known level scheme of Hf-172 has been extended with three new collective rotational bands. Many new transitions have also been observed which link the known bands into the lower-spin states, thereby permitting unambiguous spin and parity assignments to be made for the first time. In particular seven low-intensity gamma-ray transitions have been established which link the K = 12 intrinsic state into a series of lower-K stales. The half-life of the K = 12 state has been determined to be less than 2 ns and reduced hindrance factors have been calculated for each of the new decay transitions. In apparent conflict with the K-selection rule, most of these new decays have small reduced hindrance factors. The reasons for this apparent breakdown in the K-selection rule are discussed in terms of a mixing between states of both low- and high-g. In addition the mean lifetimes of the states in four of the collective rotational bands have been determined using the Doppler shift attenuation method. The deformations extracted from these measurements are in good agreement with predictions from theoretical Total Routhian Surface calculations based on the proposed configuration assignments. (C) 1998 Elsevier Science B.V.
C1 Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Cullen, DM (reprint author), Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England.
NR 40
TC 16
Z9 16
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 17
PY 1998
VL 638
IS 3-4
BP 662
EP 700
DI 10.1016/S0375-9474(98)00329-7
PG 39
WC Physics, Nuclear
SC Physics
GA 121WG
UT WOS:000076038300002
ER
PT J
AU Humblet, J
Csoto, A
Langanke, K
AF Humblet, J
Csoto, A
Langanke, K
TI R-matrix and K-matrix analysis of elastic alpha-alpha scattering
SO NUCLEAR PHYSICS A
LA English
DT Article
ID N-16 BETA-DECAY; CROSS-SECTION; GAMMA)O-16 REACTION; LOW-ENERGY;
C-12(ALPHA; CONSTRAINTS; SPECTRUM
AB The R- and K-matrix parametrizations are analyzed and compared for the elastic alpha-alpha scattering at center-of-mass energies below 40 MeV. The two parametrizations differ in their definitions of the resonance energy which can lead to quite different results. The physical values of the best-fit parameters are compared with those computed for a potential model. The existence of a broad resonance near 9 MeV is not supported by the data or by the potential model. We discuss the positive and negative aspects for both parametrizations. (C) 1998 Published by Elsevier Science B.V.
C1 CALTECH, WK Kellogg Radiat Lab, Pasadena, CA 91125 USA.
Univ Liege, Inst Phys, B-4000 Liege 1, Belgium.
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA.
Univ Aarhus, Inst Phys & Astron, Aarhus, Denmark.
Univ Aarhus, Theoret Astrophys Ctr, Aarhus, Denmark.
RP Humblet, J (reprint author), CALTECH, WK Kellogg Radiat Lab, Pasadena, CA 91125 USA.
NR 19
TC 8
Z9 8
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 17
PY 1998
VL 638
IS 3-4
BP 714
EP 726
DI 10.1016/S0375-9474(98)00419-9
PG 13
WC Physics, Nuclear
SC Physics
GA 121WG
UT WOS:000076038300004
ER
PT J
AU Abe, F
Akimoto, H
Akopian, A
Albrow, MG
Amadon, A
Amendolia, SR
Amidei, D
Antos, J
Aota, S
Apollinari, G
Arisawa, T
Asakawa, T
Ashmanskas, W
Atac, M
Azzi-Bacchetta, P
Bacchetta, N
Bagdasarov, S
Bailey, MW
de Barbaro, P
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barone, M
Bauer, G
Baumann, T
Bedeschi, F
Behrends, S
Belforte, S
Bellettini, G
Bellinger, J
Benjamin, D
Bensinger, J
Beretvas, A
Berge, JP
Berryhill, J
Bertolucci, S
Bettelli, S
Bevensee, B
Bhatti, A
Biery, K
Bigongiari, C
Binkley, M
Bisello, D
Blair, RE
Blocker, C
Blusk, S
Bodek, A
Bokhari, W
Bolla, G
Bonushkin, Y
Bortoletto, D
Boudreau, J
Breccia, L
Bromberg, C
Bruner, N
Brunetti, R
Buckley-Geer, E
Budd, HS
Burkett, K
Busetto, G
Byon-Wagner, A
Byrum, KL
Campbell, M
Caner, A
Carithers, W
Carlsmith, D
Cassada, J
Castro, A
Cauz, D
Cerri, A
Chang, PS
Chang, PT
Chao, HY
Chapman, J
Cheng, MT
Chertok, M
Chiarelli, G
Chiou, CN
Chlebana, F
Christofek, L
Chu, ML
Cihangir, S
Clark, AG
Cobal, M
Cocca, E
Contreras, M
Conway, J
Cooper, J
Cordelli, M
Costanzo, D
Couyoumtzelis, C
Cronin-Hennessy, D
Culbertson, R
Dagenhart, D
Daniels, T
DeJongh, F
Dell'Agnello, S
Dell' Orso, M
Demina, R
Demortier, L
Deninno, M
Derwent, PF
Devlin, T
Dittmann, JR
Donati, S
Done, J
Dorigo, T
Eddy, N
Einsweiler, K
Elias, JE
Ely, R
Engels, E
Erdmann, W
Errede, D
Errede, S
Fan, Q
Feild, RG
Feng, Z
Ferretti, C
Fiori, I
Flaugher, B
Foster, GW
Franklin, M
Freeman, J
Friedman, J
Frisch, H
Fukui, Y
Gadomski, S
Galeotti, S
Gallinaro, M
Ganel, O
Garcia-Sciveres, M
Garfinkel, AF
Gay, C
Geer, S
Gerdes, DW
Giannetti, P
Giokaris, N
Giromini, P
Giusti, G
Gold, M
Gordon, A
Goshaw, AT
Gotra, Y
Goulianos, K
Grassmann, H
Groer, L
Grosso-Pilcher, C
Guillian, G
da Costa, JG
Guo, RS
Haber, C
Hafen, E
Hahn, SR
Hamilton, R
Handa, T
Handler, R
Happacher, F
Hara, K
Hardman, AD
Harris, RM
Hartmann, F
Hauser, J
Hayashi, E
Heinrich, J
Hao, W
Hinrichsen, B
Hoffman, KD
Hohlmann, M
Holck, C
Hollebeek, R
Holloway, L
Huang, Z
Huffman, BT
Hughes, R
Huston, J
Huth, J
Ikeda, H
Incagli, M
Incandela, J
Introzzi, G
Iwai, J
Iwata, Y
James, E
Jensen, H
Joshi, U
Kajfasz, E
Kambara, H
Kamon, T
Kaneko, T
Karr, K
Kasha, H
Kato, Y
Keaffaber, TA
Kelley, K
Kennedy, RD
Kephart, R
Kestenbaum, D
Khazins, D
Kikuchi, T
Kim, BJ
Kim, HS
Kim, SH
Kim, YK
Kirsch, L
Klimenko, S
Knoblauch, D
Koehn, P
Kongeter, A
Kondo, K
Konigsberg, J
Kordas, K
Korytov, A
Kovacs, E
Kowald, W
Kroll, J
Kruse, M
Kuhlmann, SE
Kuns, E
Kurino, K
Kuwabara, T
Laasanen, AT
Lami, S
Lammel, S
Lamoureux, JI
Lancaster, M
Lanzoni, M
Latino, G
LeCompte, T
Leone, S
Lewis, JD
Limon, P
Lindgren, M
Liss, TM
Liu, JB
Liu, YC
Lockyer, N
Long, O
Loomis, C
Loreti, M
Lucchesi, D
Lukens, P
Lusin, S
Lys, J
Maeshima, K
Maksimovic, P
Mangano, M
Mariotti, M
Marriner, JP
Martin, A
Matthews, AJ
Mazzanti, P
McIntyre, P
Melese, P
Menguzzato, M
Menzione, A
Meschi, E
Metzler, S
Miao, C
Miao, T
Michail, G
Miller, R
Minato, H
Miscetti, S
Mishina, M
Miyashita, S
Moggi, N
Moore, E
Morita, Y
Mukherjee, A
Muller, T
Murat, P
Murgia, S
Musy, M
Nakada, H
Nakano, I
Nelson, C
Neuberger, D
Newman-Holmes, C
Ngan, CYP
Nodulman, L
Nomerotski, A
Oh, SH
Ohmoto, T
Ohsugi, T
Oishi, R
Okabe, M
Okusawa, T
Olsen, J
Pagliarone, C
Paoletti, R
Papadimitriou, V
Pappas, SP
Parashar, N
Parri, A
Patrick, J
Pauletta, G
Paulini, M
Perazzo, A
Pescara, L
Peters, MD
Phillips, TJ
Piacentino, G
Pillai, M
Pitts, KT
Plunkett, R
Pompos, A
Pondrom, L
Proudfoot, J
Ptohos, F
Punzi, G
Ragan, K
Reher, D
Reischl, M
Ribon, A
Rimondi, F
Ristori, L
Robertson, WJ
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Saab, T
Sakumoto, WK
Saltzberg, D
Sansoni, A
Santi, L
Sato, H
Schlabach, P
Schmidt, EE
Schmidt, MP
Scott, A
Scribano, A
Segler, S
Seidel, S
Seiya, Y
Semeria, F
Shah, T
Shapiro, MD
Shaw, NM
Shepard, PF
Shibayama, T
Shimojima, M
Shochet, M
Siegrist, J
Sill, A
Sinervo, P
Singh, P
Sliwa, K
Smith, C
Snider, FD
Spalding, J
Speer, T
Sphicas, P
Spinella, F
Spiropulu, M
Spiegel, L
Stanco, L
Steele, J
Stefanini, A
Strohmer, R
Strologas, J
Strumia, F
Stuart, D
Sumorok, K
Suzuki, J
Suzuki, T
Takahashi, T
Takano, T
Takashima, R
Takikawa, K
Tanaka, M
Tannenbaum, B
Tartarelli, F
Taylor, W
Tecchio, M
Teng, PK
Teramoto, Y
Terashi, K
Tether, S
Theriot, D
Timko, M
Tipton, P
Titov, A
Tkaczyk, S
Toback, E
Tollefson, K
Tollestrup, A
Toyoda, H
Trischuk, W
de Troconiz, JF
Truitt, S
Tseng, J
Turini, N
Uchida, T
Ukegawa, F
Valls, J
van den Brink, SC
Vejcik, S
Velev, G
Vidal, R
Vilar, R
Vucinic, D
Wagner, RG
Waner, RL
Wahl, J
Wallace, NB
Walsh, AM
Wang, C
Wang, CH
Wang, MJ
Warburton, A
Watanabe, T
Watts, T
Webb, R
Wei, C
Wenzel, H
Wester, WC
Wicklund, AB
Wicklund, E
Wilkinson, R
Williams, HH
Wilson, P
Winer, BL
Winn, D
Wolinski, D
Wolinski, J
Worm, S
Wu, X
Wyss, J
Yagil, A
Yao, W
Yasuoka, K
Yeh, GP
Yeh, P
Yoh, J
Yosef, C
Yoshida, T
Yu, I
Zanetti, A
Zetti, F
Zucchelli, S
AF Abe, F
Akimoto, H
Akopian, A
Albrow, MG
Amadon, A
Amendolia, SR
Amidei, D
Antos, J
Aota, S
Apollinari, G
Arisawa, T
Asakawa, T
Ashmanskas, W
Atac, M
Azzi-Bacchetta, P
Bacchetta, N
Bagdasarov, S
Bailey, MW
de Barbaro, P
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barone, M
Bauer, G
Baumann, T
Bedeschi, F
Behrends, S
Belforte, S
Bellettini, G
Bellinger, J
Benjamin, D
Bensinger, J
Beretvas, A
Berge, JP
Berryhill, J
Bertolucci, S
Bettelli, S
Bevensee, B
Bhatti, A
Biery, K
Bigongiari, C
Binkley, M
Bisello, D
Blair, RE
Blocker, C
Blusk, S
Bodek, A
Bokhari, W
Bolla, G
Bonushkin, Y
Bortoletto, D
Boudreau, J
Breccia, L
Bromberg, C
Bruner, N
Brunetti, R
Buckley-Geer, E
Budd, HS
Burkett, K
Busetto, G
Byon-Wagner, A
Byrum, KL
Campbell, M
Caner, A
Carithers, W
Carlsmith, D
Cassada, J
Castro, A
Cauz, D
Cerri, A
Chang, PS
Chang, PT
Chao, HY
Chapman, J
Cheng, MT
Chertok, M
Chiarelli, G
Chiou, CN
Chlebana, F
Christofek, L
Chu, ML
Cihangir, S
Clark, AG
Cobal, M
Cocca, E
Contreras, M
Conway, J
Cooper, J
Cordelli, M
Costanzo, D
Couyoumtzelis, C
Cronin-Hennessy, D
Culbertson, R
Dagenhart, D
Daniels, T
DeJongh, F
Dell'Agnello, S
Dell' Orso, M
Demina, R
Demortier, L
Deninno, M
Derwent, PF
Devlin, T
Dittmann, JR
Donati, S
Done, J
Dorigo, T
Eddy, N
Einsweiler, K
Elias, JE
Ely, R
Engels, E
Erdmann, W
Errede, D
Errede, S
Fan, Q
Feild, RG
Feng, Z
Ferretti, C
Fiori, I
Flaugher, B
Foster, GW
Franklin, M
Freeman, J
Friedman, J
Frisch, H
Fukui, Y
Gadomski, S
Galeotti, S
Gallinaro, M
Ganel, O
Garcia-Sciveres, M
Garfinkel, AF
Gay, C
Geer, S
Gerdes, DW
Giannetti, P
Giokaris, N
Giromini, P
Giusti, G
Gold, M
Gordon, A
Goshaw, AT
Gotra, Y
Goulianos, K
Grassmann, H
Groer, L
Grosso-Pilcher, C
Guillian, G
da Costa, JG
Guo, RS
Haber, C
Hafen, E
Hahn, SR
Hamilton, R
Handa, T
Handler, R
Happacher, F
Hara, K
Hardman, AD
Harris, RM
Hartmann, F
Hauser, J
Hayashi, E
Heinrich, J
Hao, W
Hinrichsen, B
Hoffman, KD
Hohlmann, M
Holck, C
Hollebeek, R
Holloway, L
Huang, Z
Huffman, BT
Hughes, R
Huston, J
Huth, J
Ikeda, H
Incagli, M
Incandela, J
Introzzi, G
Iwai, J
Iwata, Y
James, E
Jensen, H
Joshi, U
Kajfasz, E
Kambara, H
Kamon, T
Kaneko, T
Karr, K
Kasha, H
Kato, Y
Keaffaber, TA
Kelley, K
Kennedy, RD
Kephart, R
Kestenbaum, D
Khazins, D
Kikuchi, T
Kim, BJ
Kim, HS
Kim, SH
Kim, YK
Kirsch, L
Klimenko, S
Knoblauch, D
Koehn, P
Kongeter, A
Kondo, K
Konigsberg, J
Kordas, K
Korytov, A
Kovacs, E
Kowald, W
Kroll, J
Kruse, M
Kuhlmann, SE
Kuns, E
Kurino, K
Kuwabara, T
Laasanen, AT
Lami, S
Lammel, S
Lamoureux, JI
Lancaster, M
Lanzoni, M
Latino, G
LeCompte, T
Leone, S
Lewis, JD
Limon, P
Lindgren, M
Liss, TM
Liu, JB
Liu, YC
Lockyer, N
Long, O
Loomis, C
Loreti, M
Lucchesi, D
Lukens, P
Lusin, S
Lys, J
Maeshima, K
Maksimovic, P
Mangano, M
Mariotti, M
Marriner, JP
Martin, A
Matthews, AJ
Mazzanti, P
McIntyre, P
Melese, P
Menguzzato, M
Menzione, A
Meschi, E
Metzler, S
Miao, C
Miao, T
Michail, G
Miller, R
Minato, H
Miscetti, S
Mishina, M
Miyashita, S
Moggi, N
Moore, E
Morita, Y
Mukherjee, A
Muller, T
Murat, P
Murgia, S
Musy, M
Nakada, H
Nakano, I
Nelson, C
Neuberger, D
Newman-Holmes, C
Ngan, CYP
Nodulman, L
Nomerotski, A
Oh, SH
Ohmoto, T
Ohsugi, T
Oishi, R
Okabe, M
Okusawa, T
Olsen, J
Pagliarone, C
Paoletti, R
Papadimitriou, V
Pappas, SP
Parashar, N
Parri, A
Patrick, J
Pauletta, G
Paulini, M
Perazzo, A
Pescara, L
Peters, MD
Phillips, TJ
Piacentino, G
Pillai, M
Pitts, KT
Plunkett, R
Pompos, A
Pondrom, L
Proudfoot, J
Ptohos, F
Punzi, G
Ragan, K
Reher, D
Reischl, M
Ribon, A
Rimondi, F
Ristori, L
Robertson, WJ
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Saab, T
Sakumoto, WK
Saltzberg, D
Sansoni, A
Santi, L
Sato, H
Schlabach, P
Schmidt, EE
Schmidt, MP
Scott, A
Scribano, A
Segler, S
Seidel, S
Seiya, Y
Semeria, F
Shah, T
Shapiro, MD
Shaw, NM
Shepard, PF
Shibayama, T
Shimojima, M
Shochet, M
Siegrist, J
Sill, A
Sinervo, P
Singh, P
Sliwa, K
Smith, C
Snider, FD
Spalding, J
Speer, T
Sphicas, P
Spinella, F
Spiropulu, M
Spiegel, L
Stanco, L
Steele, J
Stefanini, A
Strohmer, R
Strologas, J
Strumia, F
Stuart, D
Sumorok, K
Suzuki, J
Suzuki, T
Takahashi, T
Takano, T
Takashima, R
Takikawa, K
Tanaka, M
Tannenbaum, B
Tartarelli, F
Taylor, W
Tecchio, M
Teng, PK
Teramoto, Y
Terashi, K
Tether, S
Theriot, D
Timko, M
Tipton, P
Titov, A
Tkaczyk, S
Toback, E
Tollefson, K
Tollestrup, A
Toyoda, H
Trischuk, W
de Troconiz, JF
Truitt, S
Tseng, J
Turini, N
Uchida, T
Ukegawa, F
Valls, J
van den Brink, SC
Vejcik, S
Velev, G
Vidal, R
Vilar, R
Vucinic, D
Wagner, RG
Waner, RL
Wahl, J
Wallace, NB
Walsh, AM
Wang, C
Wang, CH
Wang, MJ
Warburton, A
Watanabe, T
Watts, T
Webb, R
Wei, C
Wenzel, H
Wester, WC
Wicklund, AB
Wicklund, E
Wilkinson, R
Williams, HH
Wilson, P
Winer, BL
Winn, D
Wolinski, D
Wolinski, J
Worm, S
Wu, X
Wyss, J
Yagil, A
Yao, W
Yasuoka, K
Yeh, GP
Yeh, P
Yoh, J
Yosef, C
Yoshida, T
Yu, I
Zanetti, A
Zetti, F
Zucchelli, S
TI Measurement of the sigma(W+ >= 1 Jet)/sigma(W) cross section ratio from
(p)over-bar-p collisions at root s=1.8 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CONSTANT ALPHA-S; PARTON DISTRIBUTIONS; PBARP COLLISIONS; HADRON
COLLIDERS; EVENTS; PROTON; JETS
AB The ratio of the W + greater than or equal to 1 jet cross section to the inclusive W cross section is measured using W (+/-) --> e(+/-)v events from (p) over bar p collisions at root s = 1.8 TeV. The data are from 108 pb(-1) of integrated luminosity collected with the Collider Detector at Fermilab. Measurements of the cross section ratio for jet transverse energy thresholds (E-T(min)) ranging from 15 to 95 GeV are compared to theoretical predictions using next-to-leading-order QCD calculations. Data and theory agree well for E-T(min) > 25 GeV, where the predictions lie within 1 standard deviation of the measured values.
C1 Nat Lab High Energy Phys KEK, Tsukuba, Ibaraki 305, Japan.
Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
Brandeis Univ, Waltham, MA 02254 USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
Univ Chicago, Chicago, IL 60637 USA.
Duke Univ, Durham, NC 27708 USA.
Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
Univ Florida, Gainesville, FL 32611 USA.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Harvard Univ, Cambridge, MA 02138 USA.
Hiroshima Univ, Higashihiroshima 724, Japan.
Univ Illinois, Urbana, IL 61801 USA.
McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
Univ Toronto, Toronto, ON M5S 1A7, Canada.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
MIT, Cambridge, MA 02139 USA.
Univ Michigan, Ann Arbor, MI 48109 USA.
Michigan State Univ, E Lansing, MI 48824 USA.
Univ New Mexico, Albuquerque, NM 87131 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Osaka City Univ, Osaka 588, Japan.
Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
Univ Penn, Philadelphia, PA 19104 USA.
Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy.
Scuola Normale Super Pisa, I-56100 Pisa, Italy.
Univ Pittsburgh, Pittsburgh, PA 15260 USA.
Purdue Univ, W Lafayette, IN 47907 USA.
Univ Rochester, Rochester, NY 14627 USA.
Rockefeller Univ, New York, NY 10021 USA.
Rutgers State Univ, Piscataway, NJ 08855 USA.
Acad Sinica, Taipei 11530, Taiwan.
Texas A&M Univ, College Stn, TX 77843 USA.
Texas Tech Univ, Lubbock, TX 79409 USA.
Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy.
Univ Tsukuba, Tsukuba, Ibaraki 315, Japan.
Tufts Univ, Medford, MA 02155 USA.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06520 USA.
Waseda Univ, Tokyo 169, Japan.
RP Abe, F (reprint author), Nat Lab High Energy Phys KEK, Tsukuba, Ibaraki 305, Japan.
RI Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski,
Andrei/A-5169-2010; Azzi, Patrizia/H-5404-2012; Punzi,
Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Warburton,
Andreas/N-8028-2013; Paulini, Manfred/N-7794-2014; Introzzi,
Gianluca/K-2497-2015
OI Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052;
Chiarelli, Giorgio/0000-0001-9851-4816; Warburton,
Andreas/0000-0002-2298-7315; Paulini, Manfred/0000-0002-6714-5787;
Introzzi, Gianluca/0000-0002-1314-2580
NR 15
TC 6
Z9 6
U1 0
U2 1
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1367
EP 1372
DI 10.1103/PhysRevLett.81.1367
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100005
ER
PT J
AU Lidorikis, E
Sigalas, MM
Economou, EN
Soukoulis, CM
AF Lidorikis, E
Sigalas, MM
Economou, EN
Soukoulis, CM
TI Tight-binding parametrization for photonic band gap materials
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB The idea of the linear combination of atomic orbitals method, well known from the study of electrons, is extended to the classical wave case. The Mie resonances of the isolated scatterer in the classical wave case are analogous to the atomic orbitals in the electronic case. The matrix elements of the two-dimensional tight-binding (TB) Hamiltonian are obtained by fitting to nb initio results. The transferability of the TB model is tested by reproducing accurately the band structure of different 2D lattices, with and without defects, and at two different dielectric contrasts.
C1 Iowa State Univ Sci & Technol, Ames Lab, US DOE, Ames, IA 50011 USA.
Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA.
Univ Crete, FORTH, Res Ctr Crete, Iraklion 71110, Crete, Greece.
Univ Crete, Dept Phys, Iraklion 71110, Crete, Greece.
RP Lidorikis, E (reprint author), Iowa State Univ Sci & Technol, Ames Lab, US DOE, Ames, IA 50011 USA.
RI Economou, Eleftherios /E-6374-2010; Soukoulis, Costas/A-5295-2008
NR 12
TC 176
Z9 182
U1 0
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1405
EP 1408
DI 10.1103/PhysRevLett.81.1405
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100014
ER
PT J
AU Rivera, M
Vorobieff, P
Ecke, RE
AF Rivera, M
Vorobieff, P
Ecke, RE
TI Turbulence in flowing soap films: Velocity, vorticity, and thickness
fields
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We report experimental measurements of the velocity, vorticity, and thickness fields of turbulent flowing soap films using a modified particle-image velocimetry technique. These data yield the turbulent energy and enstrophy of the two-dimensional flows with microscale Reynolds numbers of about 100 and demonstrate the effects of compressibility arising from variations in film thickness. Despite the compressibility of the flow, real-space correlations of velocity, vorticity, and enstrophy Aux are consistent with theoretical predictions for two-dimensional turbulence.
C1 Univ Calif Los Alamos Natl Lab, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
RP Rivera, M (reprint author), Univ Calif Los Alamos Natl Lab, Condensed Matter & Thermal Phys Grp, POB 1663, Los Alamos, NM 87545 USA.
RI Vorobieff, Peter/B-3376-2011;
OI Ecke, Robert/0000-0001-7772-5876
NR 13
TC 82
Z9 83
U1 2
U2 12
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1417
EP 1420
DI 10.1103/PhysRevLett.81.1417
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100017
ER
PT J
AU Young, PE
Still, CH
Hinkel, DE
Kruer, WL
Williams, EA
Berger, RL
Estabrook, KG
AF Young, PE
Still, CH
Hinkel, DE
Kruer, WL
Williams, EA
Berger, RL
Estabrook, KG
TI Observations of laser-beam bending due to transverse plasma flow
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CHANNEL FORMATION; FILAMENTATION
AB Interferometric measurements of laser-produced channels in performed plasmas show that in the presence of transverse plasma flow, the beam is deflected when the transverse flow velocity is near the sound speed. For a line focus with peak intensity of 1.5 X 10(15) W/cm(2), a beam deflection of 10 degrees is observed, which agrees well with the results of a three-dimensional hydrodynamics code.
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Young, PE (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA.
NR 10
TC 13
Z9 14
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 AUG 17
PY 1998
VL 81
IS 7
BP 1425
EP 1428
DI 10.1103/PhysRevLett.81.1425
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100019
ER
PT J
AU Bell, RE
Levinton, FM
Batha, SH
Synakowski, EJ
Zarnstorff, MC
AF Bell, RE
Levinton, FM
Batha, SH
Synakowski, EJ
Zarnstorff, MC
TI Poloidal rotation in TFTR reversed shear plasmas
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID MAGNETIC SHEAR; ELECTRIC-FIELD; H-MODE; TOKAMAK PLASMA; CONFINEMENT;
TRANSITION; TRANSPORT; TURBULENCE
AB A bifurcation in the core poloidal rotation of carbon impurity ions in the Tokamak Fusion Test Reactor (TFTR) has been observed prior to the transport bifurcation associated with enhanced reverse shear plasmas. In a narrow radial region of the plasma, the impurity ion poloidal rotation reverses direction. This poloidal flow is associated with the establishment of a large negative radial electric field with strong shear. The measured poloidal velocities before, during, and after this precursor differ from neoclassical predictions.
C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Fus Phys & Technol, Torrance, CA 90503 USA.
Sci Res Lab, Somerville, MA 02144 USA.
RP Bell, RE (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
NR 23
TC 100
Z9 100
U1 0
U2 5
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1429
EP 1432
DI 10.1103/PhysRevLett.81.1429
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100020
ER
PT J
AU Barvosa-Carter, W
Aziz, MJ
Gray, LJ
Kaplan, T
AF Barvosa-Carter, W
Aziz, MJ
Gray, LJ
Kaplan, T
TI Kinetically driven growth instability in stressed solids
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID PHASE EPITAXIAL-GROWTH; NONHYDROSTATIC STRESS; CRYSTAL-GROWTH; AMORPHOUS
SI; TRANSITION; DEPENDENCE; ROUGHNESS; STABILITY; STRAIN
AB We report a new stress-induced kinetically driven morphological instability for driven systems. The effect of stress on the interfacial mobility couples to stress variations along a perturbed planar growth front. Comparison of theory and experiment for solid phase epitaxy at a corrugated Si(001) interface, with no free parameters, indicates that the new mechanism is required to account for the observed growth of the corrugation amplitude. This mechanism operates in conjunction with known diffusional and elastic strain energy-driven instabilities in determining morphological evolution.
C1 Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA.
Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
RP Barvosa-Carter, W (reprint author), USN, Res Lab, Code 6177, Washington, DC 20375 USA.
NR 26
TC 66
Z9 66
U1 3
U2 14
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1445
EP 1448
DI 10.1103/PhysRevLett.81.1445
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100024
ER
PT J
AU Wang, WK
Simpson, WC
Yarmoff, JA
AF Wang, WK
Simpson, WC
Yarmoff, JA
TI Passivation versus etching: Adsorption of I-2 on InAs(001)
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID 001 SURFACES; GAF3 FILMS; GAAS; GAAS(110); GROWTH; IODINE; CL-2;
SPECTROSCOPY; DESORPTION; CHLORINE
AB Halogen adsorption on certain III-V semiconductor surfaces forms ordered overlayers, while other surfaces etch. The microscopic mechanism underlying this behavior is investigated by comparing the adsorption of I-2 on In- and As-terminated InAs(001) surfaces. On the In-terminated surface, a well-ordered (1 x 1) structure forms and all of the iodine attaches to In. The As-terminated surface becomes disordered, however, and iodine attaches to both In and As. These observations can be explained by assuming that iodine initially bonds to In atoms, whether they are in the first or the second layer.
C1 Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Pacific NW Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Yarmoff, JA (reprint author), Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA.
EM yarmoff@ucr.edu
NR 24
TC 28
Z9 29
U1 0
U2 3
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1465
EP 1468
DI 10.1103/PhysRevLett.81.1465
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100029
ER
PT J
AU Mallozzi, R
Orenstein, J
Eckstein, JN
Bozovic, I
AF Mallozzi, R
Orenstein, J
Eckstein, JN
Bozovic, I
TI High-frequency electrodynamics of Bi2Sr2CaCu2O8+delta: Nonlinear
response in the vortex state
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID RESOLVED PHOTOEMISSION SPECTROSCOPY; DENSITY-OF-STATES; MAGNETIC-FIELD;
THIN-FILMS; SUPERCONDUCTORS; DYNAMICS; DEPENDENCE; YBA2CU3O7
AB Coherent terahertz spectroscopy is used to measure the complex conductivity of thin films of Bi2Sr2CaCu2O8+delta in the vortex state as a function of frequency, temperature, and applied magnetic field. We report an unusual sublinear power law dependence of the high-frequency magnetoconductivity Delta sigma(H) = sigma(H) - sigma(0) on magnetic field. Over a broad range of field and temperature, Delta sigma(2) varies as H-alpha, with alpha approximate to 1/2. We present a model based on the nonlinear London electrodynamics predicted for a d-wave superconductor which quantitatively explains these results using only parameters obtained from zero-field measurements.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Varian Associates Inc, EL Ginzton Res Ctr, Palo Alto, CA 94304 USA.
RP Mallozzi, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RI Orenstein, Joseph/I-3451-2015
NR 24
TC 29
Z9 29
U1 0
U2 1
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1485
EP 1488
DI 10.1103/PhysRevLett.81.1485
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100034
ER
PT J
AU Sacchi, M
Hague, CF
Pasquali, L
Mirone, A
Mariot, JM
Isberg, P
Gullikson, EM
Underwood, JH
AF Sacchi, M
Hague, CF
Pasquali, L
Mirone, A
Mariot, JM
Isberg, P
Gullikson, EM
Underwood, JH
TI Optical constants of ferromagnetic iron via 2p resonant magnetic
scattering
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID X-RAY-ABSORPTION; CIRCULAR-DICHROISM; SPECTROSCOPY; NICKEL; EXCHANGE;
EDGES
AB We have determined the optical constants at the 2p edges of iron by measuring the Bragg scattering from a Fe/V superlattice using elliptically polarized photons whose energies were tuned across the Fe 2p resonances (700-730 eV). The analysis of the Bragg peak displacement as a function of photon energy and sample magnetization, together with standard absorption measurements, allowed to determine the complete dielectric tensor for Fe, including its off-diagonal terms.
C1 Ctr Univ Paris Sud, Utilisat Rayonnement Electromagnet Lab, F-91405 Orsay, France.
Univ Paris 06, Lab Chim Phys Mat & Rayonnement, UMR 7614, F-75231 Paris 05, France.
Univ Modena, Dipartimento Fis, I-41100 Modena, Italy.
INFM, Sez Modena, I-41100 Modena, Italy.
Inst Opt Theor & Appl, URA 14, F-91439 Orsay, France.
Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Ctr Xray Opt, Berkeley, CA 94720 USA.
RP Sacchi, M (reprint author), Ctr Univ Paris Sud, Utilisat Rayonnement Electromagnet Lab, F-91405 Orsay, France.
RI Pasquali, Luca/K-2866-2015
OI Pasquali, Luca/0000-0003-0399-7240
NR 27
TC 61
Z9 62
U1 1
U2 2
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 17
PY 1998
VL 81
IS 7
BP 1521
EP 1524
DI 10.1103/PhysRevLett.81.1521
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 110UC
UT WOS:000075398100043
ER
PT J
AU Sandler, IM
Canright, GS
Zhang, ZY
Gao, HJ
Xue, ZQ
Pang, SJ
AF Sandler, IM
Canright, GS
Zhang, ZY
Gao, HJ
Xue, ZQ
Pang, SJ
TI Spontaneous chiral symmetry breaking in two-dimensional aggregation
SO PHYSICS LETTERS A
LA English
DT Article
DE 2D aggregation; pattern formation; chiral symmetry breaking
ID PATTERN-FORMATION; THIN-FILMS; GROWTH; DIFFUSION; CRYSTALS; EPITAXY;
BEAM
AB We describe a two-dimensional growth model which exhibits a novel form of spontaneous chiral symmetry breaking. The model is inspired by recent aggregation experiments giving quasi-two-dimensional "S"-shaped aggregates, and yields qualitatively similar growth patterns. We also report new growth experiments offering qualitative support for our model. (C) 1998 Elsevier Science B.V.
C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
Chinese Acad Sci, Beijing Lab Vacuum Phys, Beijing 100080, Peoples R China.
RP Canright, GS (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
EM geoffc@sapphire.phys.utk.edu
NR 23
TC 8
Z9 11
U1 3
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9601
J9 PHYS LETT A
JI Phys. Lett. A
PD AUG 17
PY 1998
VL 245
IS 3-4
BP 233
EP 238
DI 10.1016/S0375-9601(98)00424-1
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 112PH
UT WOS:000075502700010
ER
PT J
AU Liu, CL
Tolic, LP
Hofstadler, SA
Harms, AC
Smith, RD
Kang, CH
Sinha, N
AF Liu, CL
Tolic, LP
Hofstadler, SA
Harms, AC
Smith, RD
Kang, CH
Sinha, N
TI Probing regA/RNA interactions using electrospray ionization Fourier
transform ion cyclotron resonance-mass spectrometry
SO ANALYTICAL BIOCHEMISTRY
LA English
DT Article
ID PROTEIN; BINDING; COMPLEXES; DNA; ACCUMULATION; ASSOCIATIONS;
RESOLUTION; SAMPLES
AB The interactions of bacteriophage T4 regA protein, a unique translational regulator, with RNAs of various size and sequence were studied using electrospray ionization-Fourier transform ion cyclotron resonance-mass spectrometry. Using very gentle interface conditions, regA/RNA complexes with a 1:1 binding stoichiometry were observed for all four target RNAs studied, consistent with solution binding studies. Competitive binding of target RNAs and their degradation products with regA demonstrated that the loss of a single nucleotide resulted in a dramatic change in binding affinity in some cases. Competitive binding of regA with four target RNAs revealed similar relative binding affinity order to that suggested by previous in vitro repression experiments. The use of sustained off-resonance irradiation for collisionally induced dissociation of a regA/RNA complex suggested the potential for directly obtaining information regarding the regA binding domain. (C) 1998 Academic Press.
C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
Washington State Univ, Dept Biochem & Biophys, Pullman, WA 99164 USA.
Boston Biosyst Inc, Bedford, MA 01730 USA.
RP Smith, RD (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, Mail Stop K8-98,POB 999, Richland, WA 99352 USA.
EM rd_smith@pnl.gov
RI Smith, Richard/J-3664-2012
OI Smith, Richard/0000-0002-2381-2349
FU NIGMS NIH HHS [GM 53558, GM 53651]
NR 31
TC 23
Z9 23
U1 0
U2 2
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0003-2697
J9 ANAL BIOCHEM
JI Anal. Biochem.
PD AUG 15
PY 1998
VL 262
IS 1
BP 67
EP 76
DI 10.1006/abio.1998.2753
PG 10
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 119VX
UT WOS:000075919800009
PM 9735149
ER
PT J
AU Gilman, SD
Gee, SJ
Hammock, BD
Vogel, JS
Haack, K
Buchholz, BA
Freeman, SPHT
Wester, RC
Hui, XY
Maibach, HI
AF Gilman, SD
Gee, SJ
Hammock, BD
Vogel, JS
Haack, K
Buchholz, BA
Freeman, SPHT
Wester, RC
Hui, XY
Maibach, HI
TI Analytical performance of accelerator mass spectrometry and liquid
scintillation counting for detection of C-14-labeled atrazine
metabolites in human urine
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID LIVER-MICROSOMES; HUMAN EXPOSURE; AMS FACILITY; TERBUTHYLAZINE;
TERBUTRYNE; AMETRYNE; RAT; DNA
AB Accelerator mass spectrometry (AMS) has been applied to the detection; of C-14-labeled urinary metabolites of the triazine herbicide, atrazine, and the analytical performance of AMS has been directly compared to that of liquid scintillation counting(LSC). Ten human subjects were given a dermal dose of 14C-labeled atrazine over 24 h, and urine from the subjects was collected over a 7-day period, Concentrations of C-14 in the samples have been determined by AMS and LSC and range from 1.8 fmol/ml to 4.3 pmol/mL. Data from these two methods have a correlation coefficient of 0.998 for a linear plot of the entire sample set. Accelerator mass spectrometry provides superior concentration (2.2 vs 27 fmol/ml) and mass (5.5 vs 54000 amol) detection limits relative to those of LSC for these samples. The precision of the data provided by AMS for low-level samples is 1.7%, and the day-to-day reproducibility of the AMS measurements is 3.9%, Factors limiting AMS detection limits for these samples and ways in which these can be improved are examined.
C1 Univ Calif Davis, Dept Entomol, Livermore, CA 95616 USA.
Univ Calif Davis, Dept Environm Toxicol, Livermore, CA 95616 USA.
Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA.
Univ Calif San Francisco, Dept Dermatol, San Francisco, CA 94143 USA.
RP Gilman, SD (reprint author), Univ Calif Davis, Dept Entomol, Livermore, CA 95616 USA.
RI Buchholz, Bruce/G-1356-2011; Freeman, Stewart/C-3290-2012; Gilman,
Samuel/D-1635-2016
OI Freeman, Stewart/0000-0001-6148-3171; Gilman, Samuel/0000-0001-7208-3894
FU NIEHS NIH HHS [ES05697, P42 ES04699]; PHS HHS [P30 E505707]
NR 34
TC 50
Z9 50
U1 0
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD AUG 15
PY 1998
VL 70
IS 16
BP 3463
EP 3469
DI 10.1021/ac971383v
PG 7
WC Chemistry, Analytical
SC Chemistry
GA 111AF
UT WOS:000075414600017
PM 9726169
ER
PT J
AU Jacobson, SC
Culbertson, CT
Daler, JE
Ramsey, JM
AF Jacobson, SC
Culbertson, CT
Daler, JE
Ramsey, JM
TI Microchip structures for submillisecond electrophoresis
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID MICELLAR ELECTROKINETIC CHROMATOGRAPHY; SPEED CAPILLARY ELECTROPHORESIS;
GLASS CHIPS; LIQUID-CHROMATOGRAPHY; POSTCOLUMN REACTOR; SAMPLE
INJECTION; SILICON CHIP; SEPARATIONS; DEVICE; MINIATURIZATION
AB Microchip electrophoresis was used to resolve a binary mixture in 0.8 ms using a separation field strength of 53 kV cm(-1) and a separation length of 200 mu m. The microchip design permitted an electric field strength of 6.1 V cm(-1) in the separation channel per volt applied to the microchip. Concurrently, the spatial extent of the injection plug and the detector observation region were minimized to increase separation efficiency.
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Jacobson, SC (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA.
NR 31
TC 276
Z9 280
U1 3
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD AUG 15
PY 1998
VL 70
IS 16
BP 3476
EP 3480
DI 10.1021/ac980349t
PG 5
WC Chemistry, Analytical
SC Chemistry
GA 111AF
UT WOS:000075414600019
ER
PT J
AU Smulson, ME
Pang, DL
Jung, MR
Dimtchev, A
Chasovskikh, S
Spoonde, A
Simbulan-Rosenthal, C
Rosenthal, D
Yakovlev, A
Dritschilo, A
AF Smulson, ME
Pang, DL
Jung, MR
Dimtchev, A
Chasovskikh, S
Spoonde, A
Simbulan-Rosenthal, C
Rosenthal, D
Yakovlev, A
Dritschilo, A
TI Irreversible binding of poly(ADP)ribose polymerase cleavage product to
DNA ends revealed by atomic force microscopy: Possible role in apoptosis
SO CANCER RESEARCH
LA English
DT Article
ID POLY(ADP-RIBOSE) POLYMERASE; STRAND BREAKS; DAMAGED DNA; REPAIR;
EXPRESSION; CELLS; DOMAIN; DIFFERENTIATION; REQUIREMENT; PROTEINASE
AB During apoptosis, DNA undergoes fragmentation and caspase-3 cleaves poly(ADP-ribose) polymerase (PARP) into both a 24-kDa fragment containing the DNA binding domain and an 89-kDa fragment containing the catalytic and automodification domains. Atomic force microscopy revealed that recombinant full-length PARP bound to plasmid DNA fragments and linked them into chainlike structures. Automodification of PARP in the presence of NAD(+) resulted in its dissociation from the DNA fragments, which, nevertheless, remained physically aligned. A recombinant 28-kDa fragment of PARP containing the DNA binding domain but lacking the automodification domain irreversibly bound to and linked DNA fragments in the absence or presence of NAD(+). Identical results were obtained on incubation of internucleosomal DNA fragments from apoptotic cells with the products of cleavage of recombinant PARP by purified caspase-3. The 24-kDa product of PARP cleavage by caspase-3 may contribute to the irreversibility of apoptosis by blocking the access of DNA repair enzymes to DNA strand breaks.
C1 Georgetown Univ, Sch Med, Div Radiat Res, Dept Radiat Med, Washington, DC 20007 USA.
Georgetown Univ, Dept Biochem & Mol Biol, Washington, DC 20007 USA.
Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Dritschilo, A (reprint author), Georgetown Univ, Sch Med, Div Radiat Res, Dept Radiat Med, TRB E202A-B,3970 Reservoir Rd NW, Washington, DC 20007 USA.
EM dritscha@gunet.georgetown
FU NCI NIH HHS [CA45408, CA25344, CA74175]
NR 34
TC 71
Z9 71
U1 0
U2 1
PU AMER ASSOC CANCER RESEARCH
PI BIRMINGHAM
PA PO BOX 11806, BIRMINGHAM, AL 35202 USA
SN 0008-5472
J9 CANCER RES
JI Cancer Res.
PD AUG 15
PY 1998
VL 58
IS 16
BP 3495
EP 3498
PG 4
WC Oncology
SC Oncology
GA 112EU
UT WOS:000075481800003
PM 9721847
ER
PT J
AU Chen, LC
Manjeshwar, S
Lu, Y
Moore, D
Ljung, BM
Kuo, WL
Dairkee, SH
Wernick, M
Collins, C
Smith, HS
AF Chen, LC
Manjeshwar, S
Lu, Y
Moore, D
Ljung, BM
Kuo, WL
Dairkee, SH
Wernick, M
Collins, C
Smith, HS
TI The human homologue for the Caenorhabditis elegans cul-4 gene is
amplified and overexpressed in primary breast cancers
SO CANCER RESEARCH
LA English
DT Article
ID COMPARATIVE GENOMIC HYBRIDIZATION; HOMOGENEOUSLY STAINING REGIONS;
IN-SITU HYBRIDIZATION; DIFFERENTIAL DISPLAY; MESSENGER-RNAS;
DNA-SEQUENCES; AMPLIFICATION; FAMILY; CARCINOMAS; CLONING
AB Amplification is a key mechanism whereby a cancer cell increases the message level of genes that confer a selective advantage when they are overexpressed. In breast cancer, there are many chromosome regions present in multiple copies relative to overall DNA copy number (amplicons), and their target genes are unknown. Using differential display, we have cloned and sequenced the full coding region of a candidate amplicon target gene located on chromosome 13, This candidate iri the human homologue of the Caenorhabditis elegans cul-4 gene, cul-4A, a member of the novel cullin gene family, which is involved in cell cycle control of C. elegans,
cul-4A was amplified and overexpressed in 3 of 14 breast cancer cell lines analyzed, and it was overexpressed in 8 additional cell lines in which it was not amplified. The latter observation, indicating that its overexpression can occur by mechanisms other than gene amplification, suggests that cul-4A plays a key role in carcinogenesis. Moreover, cul-4A was found to be amplified in 17 of 105 (16%) cases of untreated primary breast cancers, and 14 of 30 cases analyzed (47%) were shown by RNA in situ hybridization to overexpress cul-4A. These results suggest that upregulation of cul-4A may play an important role in tumor progression.
C1 Calif Pacific Med Ctr, Geraldine Brush Canc Res Inst, San Francisco, CA 94115 USA.
Univ Calif San Francisco, Sch Med, San Francisco, CA 94143 USA.
Univ Calif San Francisco, Sch Canc Genet, San Francisco, CA 94143 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Chen, LC (reprint author), Calif Pacific Med Ctr, Geraldine Brush Canc Res Inst, 2330 Clay St,Room 100, San Francisco, CA 94115 USA.
RI Dairkee, Shanaz/D-6743-2012
FU NCI NIH HHS [P01 CA44768]
NR 32
TC 110
Z9 113
U1 0
U2 1
PU AMER ASSOC CANCER RESEARCH
PI BIRMINGHAM
PA PO BOX 11806, BIRMINGHAM, AL 35202 USA
SN 0008-5472
J9 CANCER RES
JI Cancer Res.
PD AUG 15
PY 1998
VL 58
IS 16
BP 3677
EP 3683
PG 7
WC Oncology
SC Oncology
GA 112EU
UT WOS:000075481800034
PM 9721878
ER
PT J
AU Limoli, CL
Hartmann, A
Shephard, L
Yang, CR
Boothman, DA
Bartholomew, J
Morgan, WF
AF Limoli, CL
Hartmann, A
Shephard, L
Yang, CR
Boothman, DA
Bartholomew, J
Morgan, WF
TI Apoptosis, reproductive failure, and oxidative stress in Chinese hamster
ovary cells with compromised genomic integrity
SO CANCER RESEARCH
LA English
DT Article
ID IONIZING-RADIATION; CHROMOSOMAL INSTABILITY; MAMMALIAN-CELLS; REACTIVE
OXYGEN; DNA-DAMAGE; WILD-TYPE; P53; ACTIVATION; CANCER; GROWTH
AB Chromosomal instability and persistent reproductive cell death show a significant correlation after cells are exposed to ionizing radiation. To examine the possible role of apoptosis in persistent reproductive cell death, we analyzed subsets of chromosomally stable and unstable clones for relationships between chromosome stability, reproductive integrity, and apoptosis. All clones were generated from the GM10115 cell line and derived from single progenitor cells surviving 10 Gy of X-rays, and all measurements were made similar to 60-80 generations after irradiation. The incidence of apoptosis, as measured by both annexin V binding of phosphatidylserine residues and terminal deoxynucleotidyl transferase labeling of DNA strand breaks, was significantly higher in chromosomally unstable clones than it was in chromosomally stable clones (P < 0.05; ANOVA and Student's t test). Furthermore, statistical analyses of the biological end points of persistent reproductive cell death and apoptosis were consistent, showing R-2 values of 0.78 and 0.76, respectively. These results suggest that persistent reproductive cell death can, in Dart, be explained by the predisposition of a fraction of the clonal population to undergo apoptosis or necrosis. Immunological blot analyses of protein Levels and DNA bandshift assays confirmed the mutant status of p53 in the host cell line, implying an apoptotic pathway that is independent of p53. Induction of apoptosis by agents such as actinomycin D, etoposide, and staurosporine and induction of necrosis by sodium azide were accompanied by an increase in the level of intracellular peroxy radicals and lipid peroxidation products, two independent end points that are typically associated with oxidative stress, Similar findings were observed in several subclones showing persistent apoptosis. These results suggest that the elevated levels of free radical damage that we detected mere derived from the fraction of cells dying by apoptotic or necrotic processes. possible mechanisms whereby oxidative stress mag contribute indirectly to the perpetuation of chromosomal instability are discussed.
C1 Univ Calif San Francisco, Dept Radiol, San Francisco, CA 94143 USA.
Univ Calif San Francisco, Dept Radiat Oncol, San Francisco, CA 94143 USA.
Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Struct Biol Div, Berkeley, CA 94720 USA.
Univ Wisconsin, Sch Med, Dept Human Oncol, Madison, WI 53792 USA.
Ctr Comprehens Canc, Madison, WI 53792 USA.
RP Limoli, CL (reprint author), Univ Calif San Francisco, Dept Radiol, LREH 314, San Francisco, CA 94143 USA.
FU NCI NIH HHS [R01 CA083196, CA67995-02]; NIEHS NIH HHS [5T32 ES07106];
NIGMS NIH HHS [GM 54189]
NR 38
TC 129
Z9 139
U1 0
U2 3
PU AMER ASSOC CANCER RESEARCH
PI BIRMINGHAM
PA PO BOX 11806, BIRMINGHAM, AL 35202 USA
SN 0008-5472
J9 CANCER RES
JI Cancer Res.
PD AUG 15
PY 1998
VL 58
IS 16
BP 3712
EP 3718
PG 7
WC Oncology
SC Oncology
GA 112EU
UT WOS:000075481800039
PM 9721883
ER
PT J
AU Her, C
Doggett, NA
AF Her, C
Doggett, NA
TI Cloning, structural characterization, and chromosomal localization of
the human orthologue of Saccharomyces cerevisiae MSH5 gene
SO GENOMICS
LA English
DT Article
ID MISMATCH REPAIR; CPG ISLANDS; MUTS HOMOLOGS; MICROSATELLITE INSTABILITY;
EXPRESSION; CANCER; MUTATIONS; PROTEINS; COLON; YEAST
AB We have cloned and characterized the human orthologue of the Saccharomyces cerevisiae MutS homologue 5 (MSH5) cDNA, as well as the human gene that encodes the MSH5 cDNA, as a step toward understanding the molecular genetic mechanisms involved in the biological function of this novel human protein. The identified cDNA contains a 2505-bp opera reading frame (ORF) that encodes an 834-amino-acid polypeptide with a predicted molecular mass of 92.9 kDa. The amino acid sequence encoded by this cDNA includes sequence motifs that are conserved in all known MutS homologues existing in bacteria to humans. The cDNA appears, on the basis of amino acid sequence analysis, to be a member of the MutS family and shares 30% sequence identity with that of S. cerevisiae MSR5, a yeast gene that plays a critical role in facilitating crossover during meiosis. Northern blot analysis demonstrated the presence of a 2.9-kb human MSH5 mRNA species in all human tissues tested, but the highest expression was in human testis, an organ containing cells that undergo constant DNA synthesis and meiosis. The expression pattern of human MSH5 resembled that of the previously identified human MutS homologues MSH2, MSH3, and MSH6-genes that are involved in the pathogenesis of hereditary nonpolyposis colorectal cancer (HNPCC). In an effort to expedite the search for potential disease association with this new human MutS homologue, we have also determined the chromosomal location and structure of the human MSH5 Focus. Sequence and structural characterization demonstrated that MSH5 spans approximately 25 kb and contains 26 exons that range in length from 36 bp for exon 8 to 254 bp for exon 25. MSH5 has been mapped to human chromosome band 6p21.3 by fluorescence in situ hybridization. Knowledge of the sequence and gene structure of MSH5 will now enable studies of the possible roles MSH5 may play in meiosis and/or DNA replicative mismatch repair. (C) 1998 Academic Press.
C1 Univ Calif Los Alamos Natl Lab, Div Life Sci, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, Ctr Human Genome Studies, Los Alamos, NM 87545 USA.
RP Her, C (reprint author), Univ Calif Los Alamos Natl Lab, Div Life Sci, Mail Stop M888, Los Alamos, NM 87545 USA.
EM her@telomere.lanl.gov
NR 44
TC 48
Z9 52
U1 0
U2 4
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0888-7543
J9 GENOMICS
JI Genomics
PD AUG 15
PY 1998
VL 52
IS 1
BP 50
EP 61
DI 10.1006/geno.1998.5374
PG 12
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 121TX
UT WOS:000076031000007
PM 9740671
ER
PT J
AU Funderburgh, JL
Perchellet, AL
Swiergiel, P
Conrad, GW
Justice, MJ
AF Funderburgh, JL
Perchellet, AL
Swiergiel, P
Conrad, GW
Justice, MJ
TI Keratocan (Kera), a corneal keratan sulfate proteoglycan, maps to the
distal end of mouse chromosome 10
SO GENOMICS
LA English
DT Article
ID CLONING
C1 Kansas State Univ, Div Biol, Manhattan, KS 66506 USA.
Oak Ridge Natl Lab, Div Life Sci, Mammalian Genet Sect, Oak Ridge, TN 37831 USA.
RP Funderburgh, JL (reprint author), Kansas State Univ, Div Biol, Ackert Hall, Manhattan, KS 66506 USA.
FU NEI NIH HHS [EY09368, EY00952]
NR 5
TC 3
Z9 3
U1 0
U2 0
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0888-7543
J9 GENOMICS
JI Genomics
PD AUG 15
PY 1998
VL 52
IS 1
BP 110
EP 111
DI 10.1006/geno.1998.5355
PG 2
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 121TX
UT WOS:000076031000015
PM 10348636
ER
PT J
AU McGraw, R
Weber, RJ
AF McGraw, R
Weber, RJ
TI Hydrates in binary sulfuric acid-water vapor: Comparison of CIMS
measurements with the liquid-drop model
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID HOMOGENEOUS NUCLEATION; REEXAMINATION
AB We report calculations of the distribution of sulfuric acid-water hydrates under atmospheric conditions using the liquid-drop hydrate model. The model-computed total acid concentrations (free acid plus hydrated acid) are compared with chemical ionization mass spectrometer (CIMS) measurements of total sulfuric acid vapor over solutions of varying concentration [Marti et al., 1997] Results from this first direct comparison with experimental measurement suggest that the liquid-drop model overestimates the extent of hydrate formation. We explore the consequences of this overestimation on binary sulfuric acid-water nucleation rates, and on higher-order multicomponent nucleation rates involving these and additional trace species in the atmosphere. In particular, it is found that overestimation of hydrate formation by the model can result in substantial underprediction of sulfuric acid-water nucleation rates.
C1 Brookhaven Natl Lab, Dept Appl Sci, Environm Chem Div, Upton, NY 11973 USA.
RP McGraw, R (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Environm Chem Div, Upton, NY 11973 USA.
NR 17
TC 15
Z9 15
U1 1
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD AUG 15
PY 1998
VL 25
IS 16
BP 3143
EP 3146
DI 10.1029/98GL02150
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 111WT
UT WOS:000075462000023
ER
PT J
AU Dohrmann, CR
Key, SW
Heinstein, MW
Jung, J
AF Dohrmann, CR
Key, SW
Heinstein, MW
Jung, J
TI A least-squares approach for uniform strain triangular and tetrahedral
finite elements
SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
LA English
DT Article
DE finite elements; least squares; uniform strain; hourglass control
AB A least-squares approach is presented for implementing uniform strain triangular and tetrahedral finite elements. The basis for the method is a weighted least-squares formulation in which a linear displacement field is fit to an element's nodal displacements. By including a greater number of nodes on the element boundary than is required to define the linear displacement field, it is possible to eliminate volumetric locking common to fully integrated lower-order elements. Such results can also be obtained using selective or reduced integration schemes, but the present approach is fundamentally different from those. The method is computationally efficient and can be used to distribute surface loads on an element edge or face in a continuously varying manner between vertex, mid-edge and mid-face nodes. Example problems in two- and three-dimensional linear elasticity are presented. Element types considered in the examples include a six-node triangle, eight-node tetrahedron, and ten-node tetrahedron. (C) 1998 John Wiley & Sons, Ltd.
C1 Sandia Natl Labs, Struct Dynam Dept, Albuquerque, NM 87185 USA.
Sandia Natl Labs, Dept Mech & Mfg Engn, Albuquerque, NM 87185 USA.
RP Dohrmann, CR (reprint author), Sandia Natl Labs, Struct Dynam Dept, MS 0439,POB 5800, Albuquerque, NM 87185 USA.
NR 6
TC 13
Z9 14
U1 0
U2 2
PU JOHN WILEY & SONS LTD
PI W SUSSEX
PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND
SN 0029-5981
J9 INT J NUMER METH ENG
JI Int. J. Numer. Methods Eng.
PD AUG 15
PY 1998
VL 42
IS 7
BP 1181
EP 1197
DI 10.1002/(SICI)1097-0207(19980815)42:7<1181::AID-NME402>3.0.CO;2-P
PG 17
WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary
Applications
SC Engineering; Mathematics
GA 103LX
UT WOS:000075158400002
ER
PT J
AU Sankey, OF
Demkov, AA
Windl, W
Fritsch, JH
Lewis, JP
Fuentes-Cabrera, M
AF Sankey, OF
Demkov, AA
Windl, W
Fritsch, JH
Lewis, JP
Fuentes-Cabrera, M
TI The application of approximate density functionals to complex systems
SO INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
LA English
DT Article; Proceedings Paper
CT Symposium on Density Functional Theory and Applications
CY JUN 03-07, 1997
CL DUKE UNIV, DURHAM, NORTH CAROLINA
SP US Natl Sci Fdn, Corning Inc, Petr Res Fund, Amer Chem Soc, Univ N Carolina, NIH Computat Struct Biol Resource, NYU, Duke Univ, Off Vice Provost Acad & Int Affairs, Duke Univ, Dept Chem
HO DUKE UNIV
ID BINDING MOLECULAR-DYNAMICS; ELECTRONIC-STRUCTURE; EXTREMAL PROPERTIES;
BEAM EPITAXY; HARRIS; ENERGY; SI1-X-YGEXCY; SURFACE; GROWTH; ALLOYS
AB The application of density functional theory to complex systems requires simplifications. We describe our methodology, which uses the Harris functional, and its self-consistent generalization to ionic systems as well as its extension to hydrogen-bonded systems. We give brief examples of the application of the theory to semiconductor alloys, large biological molecules, stable ionic GaN (AlN) (0001) surfaces, and the electronic states of Ge clathrates. (C) 1998 John Wiley & Sons, Inc.
C1 Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA.
Motorola Inc, Mesa, AZ 85202 USA.
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Univ N Carolina, Sch Med, Dept Biochem & Biophys, Chapel Hill, NC 27599 USA.
Univ La Laguna, Fac Fis, Dept Fis Fundamental & Expt, E-38204 La Laguna, Tenerife, Spain.
RP Sankey, OF (reprint author), Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA.
RI Windl, Wolfgang/C-7255-2012; Fuentes-Cabrera, Miguel/Q-2437-2015
OI Windl, Wolfgang/0000-0001-5892-0684; Fuentes-Cabrera,
Miguel/0000-0001-7912-7079
NR 49
TC 49
Z9 49
U1 0
U2 2
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0020-7608
J9 INT J QUANTUM CHEM
JI Int. J. Quantum Chem.
PD AUG 15
PY 1998
VL 69
IS 3
BP 327
EP 340
DI 10.1002/(SICI)1097-461X(1998)69:3<327::AID-QUA11>3.0.CO;2-#
PG 14
WC Chemistry, Physical; Mathematics, Interdisciplinary Applications;
Physics, Atomic, Molecular & Chemical
SC Chemistry; Mathematics; Physics
GA 104GR
UT WOS:000075006800010
ER
PT J
AU Delin, A
Ravindran, P
Eriksson, O
Wills, JM
AF Delin, A
Ravindran, P
Eriksson, O
Wills, JM
TI Full-potential optical calculations of lead chalcogenides
SO INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
LA English
DT Article; Proceedings Paper
CT Symposium on Density Functional Theory and Applications
CY JUN 03-07, 1997
CL DUKE UNIV, DURHAM, NC
SP US Natl Sci Fdn, Corning Inc, Petr Res Fund, Amer Chem Soc, Univ N Carolina, NIH Computat Struct Biol Resource, NYU, Duke Univ, Off Vice Provost Acad & Int Affairs, Duke Univ, Dept Chem
HO DUKE UNIV
DE density functional theory; full-potential linear muffin-tin orbital
method; optical properties; lead salts
ID BRILLOUIN-ZONE; SPECIAL POINTS; PBTE; PBSE; BAND
AB We report on ab initio calculations of the optical properties of the lead chalcogenides PbS, PbSe, and PbTe performed with a relativistic full-potential linear muffin-tin orbital method within the local density approximation. Our calculated spectra are in excellent agreement with recent ellipsometry measurements. The origin of the peaks in the spectra is discussed: as well as the effects of increasing the chalcogen atomic number. (C) 1998 John Wiley & Sons, Inc.
C1 Uppsala Univ, Dept Phys, S-75121 Uppsala, Sweden.
Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87544 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA.
RP Uppsala Univ, Dept Phys, Box 530, S-75121 Uppsala, Sweden.
RI Eriksson, Olle/E-3265-2014; Delin, Anna/P-2100-2014
OI Eriksson, Olle/0000-0001-5111-1374; Delin, Anna/0000-0001-7788-6127
NR 39
TC 96
Z9 96
U1 0
U2 6
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0020-7608
EI 1097-461X
J9 INT J QUANTUM CHEM
JI Int. J. Quantum Chem.
PD AUG 15
PY 1998
VL 69
IS 3
BP 349
EP 358
DI 10.1002/(SICI)1097-461X(1998)69:3<349::AID-QUA13>3.0.CO;2-Y
PG 10
WC Chemistry, Physical; Mathematics, Interdisciplinary Applications;
Physics, Atomic, Molecular & Chemical
SC Chemistry; Mathematics; Physics
GA 104GR
UT WOS:000075006800012
ER
PT J
AU Morgado, MG
Guimares, ML
Gripp, CBG
Costa, CI
Neves, I
Veloso, VG
Linhares-Carvalho, MI
Castello-Branco, LR
Bastos, FI
Kuiken, C
Castilho, EA
Galvao-Castro, B
Bongertz, V
AF Morgado, MG
Guimares, ML
Gripp, CBG
Costa, CI
Neves, I
Veloso, VG
Linhares-Carvalho, MI
Castello-Branco, LR
Bastos, FI
Kuiken, C
Castilho, EA
Galvao-Castro, B
Bongertz, V
CA Evandro Chagas Hosp AIDS Clinical Res Grp
TI Molecular epidemiology of HIV-1 in Brazil: High prevalence of HIV-1
subtype B and identification of an HIV-1 subtype D infection in the city
of Rio de Janeiro, Brazil
SO JOURNAL OF ACQUIRED IMMUNE DEFICIENCY SYNDROMES AND HUMAN RETROVIROLOGY
LA English
DT Article
DE HIV-1 subtypes in Brazil; heteroduplex mobility assay; HIV-1 subtype D
infection
ID IMMUNODEFICIENCY-VIRUS TYPE-1; HETERODUPLEX MOBILITY ASSAY; INJECTING
DRUG-USERS; ENVELOPE GENES; V3 REGION; THAILAND; STRAINS; POLYMORPHISM;
TRANSMISSION; BANGKOK
AB HIV-1-positive individuals were recruited from January 1993 to December 1996 from several cohorts receiving follow-up in the city of Rio de Janeiro, Brazil, to evaluate HIV-1 genetic variability and the potential association with modes of transmission. HIV-1 subtyping was carried out using the heteroduplex mobility assay (HMA), and those samples corresponding to the typical Brazilian subtype B variant were further identified based on the Fok I restriction fragment length polymorphism (RFLP). DNA sequencing was performed to evaluate one case of subtype D infection. From the 131 HIV-1-positive individuals analyzed, 106 (80.9%) could be identified as infected by subtype B and 20 (15.3%) by subtype F. One of the samples (0.8%) was classified as subtype D. DNA samples from 4 patients (3.0%) did not yield polymerase chain reaction (PCR)-amplified products to be typed. Based on the Fok I RFLP, 39 of the 106 subtype B samples (37%) were identified as corresponding to the typical Brazilian subtype B variant containing the GWGR motif at the tip of the V3 loop. No statistically significant association could be detected between HIV-1 subtypes and modes of transmission, exposure categories, or gender. This is the first reported case of HIV-1 subtype D infection in Brazil.
C1 FIOCRUZ, Inst Oswaldo Cruz, Dept Immunol, Lab AIDS & Mol Immunol, BR-21045900 Rio De Janeiro, Brazil.
FIOCRUZ, Inst Oswaldo Cruz, Evandro Chagas Hosp, BR-21045900 Rio De Janeiro, Brazil.
FIOCRUZ, Dept Hlth Informat, CICT, BR-21045900 Rio De Janeiro, Brazil.
FIOCRUZ, CICT, Banco Previdencia Outpatient Clin, BR-21045900 Rio De Janeiro, Brazil.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM USA.
Brazilian Minist Hlth, Natl Coordinat STD AIDS, Brasilia, DF, Brazil.
FIOCRUZ, Goncalo Moniz Res Ctr, Adv Publ Hlth Lab, Bahia Blanca, Argentina.
RP Morgado, MG (reprint author), FIOCRUZ, Inst Oswaldo Cruz, Dept Immunol, Lab AIDS & Mol Immunol, Av Brasil 4365, BR-21045900 Rio De Janeiro, Brazil.
EM morgado@gene.dbbm.fiocruz.br
RI Goncalves Veloso, Valdilea/J-6189-2012; CASTILHO, EUCLIDES/K-7906-2016
NR 34
TC 59
Z9 60
U1 0
U2 1
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 USA
SN 1077-9450
J9 J ACQ IMMUN DEF SYND
JI J. Acquir. Immune Defic. Syndr. Hum. Retrovirol.
PD AUG 15
PY 1998
VL 18
IS 5
BP 488
EP 494
PG 7
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA 113VX
UT WOS:000075575500011
PM 9715846
ER
PT J
AU Johnson, MD
Caturla, MJ
de la Rubia, TD
AF Johnson, MD
Caturla, MJ
de la Rubia, TD
TI A kinetic Monte-Carlo study of the effective diffusivity of the silicon
self-interstitial in the presence of carbon and boron
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID OXIDATION-ENHANCED DIFFUSION; B-DOPING-SUPERLATTICES; POINT-DEFECTS;
GOLD DIFFUSION; SI; LAYERS
AB The effect of carbon on self-interstitial diffusion in Si is studied by means of a kinetic Monte-Carlo simulation. It is found that modest levels of carbon (greater than or similar to 10(17) cm(-3)) significantly reduce the effective interstitial diffusivity. From fitting self-interstitial profiles, migration energies and prefactors of the effective diffusivity have been determined for a variety of background carbon levels. In addition, we re-examine recent experiments performed in samples with significant levels of carbon, which attempt to measure the effective diffusivity by monitoring the spreading of boron marker layers. We show that the presence of boron in delta-doped markers significantly alters the measured self-interstitial diffusivity. (C) 1998 American Institute of Physics. [S0021-8979(98)07912-2].
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Johnson, MD (reprint author), Avant Corp, 46871 Bayside Pkwy, Freemont, CA 94538 USA.
RI Caturla, Maria /D-6241-2012
OI Caturla, Maria /0000-0002-4809-6553
NR 34
TC 28
Z9 28
U1 0
U2 4
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD AUG 15
PY 1998
VL 84
IS 4
BP 1963
EP 1967
DI 10.1063/1.368328
PG 5
WC Physics, Applied
SC Physics
GA 108GL
UT WOS:000075257700032
ER
PT J
AU Zhou, D
Gruen, DM
Qin, LC
McCauley, TG
Krauss, AR
AF Zhou, D
Gruen, DM
Qin, LC
McCauley, TG
Krauss, AR
TI Control of diamond film microstructure by Ar additions to CH4/H-2
microwave plasmas
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID CHEMICAL-VAPOR-DEPOSITION; GROWTH; HYDROGEN; OXYGEN; ARGON; NUCLEATION;
NITROGEN; SILICON
AB The transition from microcrystalline to nanocrystalline diamond films grown from Ar/H-2/CH4 microwave plasmas has been investigated. Both the cross-section and plan-view micrographs of scanning electron microscopy reveal that the surface morphology, the grain size, and the growth mechanism of the diamond films depend strongly on the ratio of Ar to H-2 in the reactant gases. Microcrystalline grain size and columnar growth have been observed from films produced from Ar/H-2/CH4 microwave discharges with low concentrations of Ar in the reactant gases. By contrast, the films grown from Ar/H-2/CH4 microwave plasmas with a high concentration of Ar in the reactant gases consist of phase pure nanocrystalline diamond, which has been characterized by transmission electron microscopy, selected area electron diffraction, and electron energy loss spectroscopy. X-ray diffraction and Raman spectroscopy reveal that the width of the diffraction peaks and the Raman bands of the as-grown films depends on the ratio of Ar to H-2 in the plasmas and are attributed to the transition from micron to nanometer size crystallites. It has been demonstrated that the microstructure of diamond films deposited from Ar/H-2/CH4 plasmas can be controlled by varying the ratio of Ar to H-2 in the reactant gas. The transition becomes pronounced at an Ar/H-2 volume ratio of 4, and the microcrystalline diamond films are totally transformed to nanocrystalline diamond at an Ar/H-2 volume ratio of 9. The transition in microstructure is presumably due to a change in growth mechanism from CH3 in high hydrogen content to C-2 as a growth species in low hydrogen content plasmas. [30021-8979(98)07316-2].
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
RP Zhou, D (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM dzhou@pegasus.cc.ucf.edu; gruen@anichm.chm.anl.gov
NR 38
TC 237
Z9 245
U1 3
U2 42
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD AUG 15
PY 1998
VL 84
IS 4
BP 1981
EP 1989
DI 10.1063/1.368331
PG 9
WC Physics, Applied
SC Physics
GA 108GL
UT WOS:000075257700036
ER
PT J
AU Yu, PY
Choi, IH
Eom, SH
AF Yu, PY
Choi, IH
Eom, SH
TI Response to "Comment on 'Dispersion of birefringence in AgGaS2 and
CuGaS2'" [J. Appl. Phys. 84, 2364 (1998)]
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
AB In a comment preceding this response [J. Appl. Phys. 84, 2364 (1998)], Bhar noted that the expression we proposed to explain the dispersion of birefringence in AgGaS2 and CuGaS2 near their band gaps did not fit the long wavelength dispersion as well as the Sellmeier equation approach. We point out that our model can be improved to fit the long wavelength dispersion provided we can include contributions to the birefringence from the higher energy transitions. (C) 1998 American Institute of Physics. [S0021-8979(98)03216-2].
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Chung Ang Univ, Dept Phys, Seoul 156756, South Korea.
RP Yu, PY (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
NR 2
TC 0
Z9 0
U1 0
U2 1
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD AUG 15
PY 1998
VL 84
IS 4
BP 2365
EP 2365
DI 10.1063/1.368505
PG 1
WC Physics, Applied
SC Physics
GA 108GL
UT WOS:000075257700099
ER
PT J
AU Savargaonkar, N
Narayan, RL
Pruski, M
Uner, DO
King, TS
AF Savargaonkar, N
Narayan, RL
Pruski, M
Uner, DO
King, TS
TI Structure sensitive hydrogen adsorption: Effect of Ag on Ru/SiO2
catalysts
SO JOURNAL OF CATALYSIS
LA English
DT Article
ID BIMETALLIC CATALYSTS; ADSORBED HYDROGEN; CHEMISORPTION; SURFACES; NMR;
DESORPTION; SINGLE; ALLOYS
AB The dynamics and energetics of hydrogen chemisorption on silica-supported ruthenium and ruthenium-silver bimetallic catalysts were studied by H-1 NMR spectroscopy and microcalorimetry. It was observed that the amount of hydrogen adsorbed on Ru particles having intermediate and low heats of adsorption was significantly reduced with increasing amounts of silver. The desorption and adsorption rate constants, determined from selective excitation NMR experiments, were lower on Ru-Ag catalysts than those on Ru catalysts at the same temperature and hydrogen coverage. The apparent sticking coefficients of hydrogen on a Ru-Ag catalyst with 10 at% Ag were more than 10 times lower than those on a Ru catalyst and were comparable to sticking coefficients reported in the literature for hydrogen adsorbing on Ru single crystal. Thus silver was found to greatly affect both the dynamics and energetics of hydrogen chemisorption on Ru/SiO2. However, ensemble and electronic effects did not play any role in causing these effects. It is postulated here that the influence of silver was due to its tendency to selectively segregate to edge, corner, and other low coordination structures on the Ru particle surface. Hence, hydrogen adsorption on these surfaces was found to be structure sensitive. (C) 1998 Academic Press.
C1 Iowa State Univ Sci & Technol, Ames Lab, Dept Chem Engn, Ames, IA 50011 USA.
RP Savargaonkar, N (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Dept Chem Engn, Ames, IA 50011 USA.
RI Uner, Deniz/P-5819-2015
OI Uner, Deniz/0000-0001-8585-3691
NR 27
TC 15
Z9 15
U1 3
U2 10
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9517
J9 J CATAL
JI J. Catal.
PD AUG 15
PY 1998
VL 178
IS 1
BP 26
EP 33
DI 10.1006/jcat.1998.2115
PG 8
WC Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 112RZ
UT WOS:000075509100003
ER
PT J
AU Fujikawa, T
Ribeiro, FH
Somorjai, GA
AF Fujikawa, T
Ribeiro, FH
Somorjai, GA
TI The effect of Sn on the reactions of n-hexane and cyclohexane over
polycrystalline Pt foils
SO JOURNAL OF CATALYSIS
LA English
DT Article
ID BIMETALLIC PT-SN/AL2O3 CATALYSTS; TIN REFORMING CATALYSTS; SN/PT(111)
SURFACE ALLOYS; ENSEMBLE SIZE-REDUCTION; X-RAY-DIFFRACTION; CO
ADSORPTION; HYDROCARBON REACTIONS; ALUMINA CATALYSTS; PTSN CATALYSTS;
PLATINUM
AB The modification of the catalytic properties of a polycrystalline platinum foil by the addition of tin was studied by the reactions of n-hexane and cyclohexane in excess H-2. The reactions were studied at 13.3 kPa of n-hexane, 450 kPa of H-2 and 740 K, and 6.7 kPa of cyclohexane, 450 kPa of H-2 and 573 K. The Pt-Sn catalyst was characterized by Auger electron spectroscopy and by temperature-programmed desorption of CO before and after the reactions. The sites that bind CO most strongly on the Pt foil also have the highest initial turnover rate and are the first ones to be poisoned by carbon deposits from hydrocarbon reactions or by sulfur when a sulfur-containing compound (thiophene) is present in the feed. The addition of tin can block these sites preferentially, thus decreasing the undesirable high initial hydrogenolysis rate of platinum catalysts in reforming reactions and eliminating the need for presulfiding the catalyst. Also, tin suppressed the hydrogenolysis reaction preferentially to the isomerization and cyclization reactions thus increasing the selectivities to isomerization and cyclization. The amount of carbon deposited was smaller on tin containing platinum catalysts during the dehydrogenation of cyclohexane and n-hexane, (C) 1998 Academic Press.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Adv Mat, Div Sci Mat, Berkeley, CA 94720 USA.
Cosmo Res Inst, Ctr Res & Dev, Satte, Saitama 3400193, Japan.
RP Ribeiro, FH (reprint author), Worcester Polytech Inst, Dept Chem Engn, Worcester, MA 01609 USA.
OI Ribeiro, Fabio/0000-0001-7752-461X
NR 60
TC 39
Z9 39
U1 0
U2 10
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9517
J9 J CATAL
JI J. Catal.
PD AUG 15
PY 1998
VL 178
IS 1
BP 58
EP 65
DI 10.1006/jcat.1998.2118
PG 8
WC Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 112RZ
UT WOS:000075509100006
ER
PT J
AU Park, YK
Ribeiro, FH
Somorjai, GA
AF Park, YK
Ribeiro, FH
Somorjai, GA
TI The effect of potassium and tin on the hydrogenation of ethylene and
dehydrogenation of cyclohexane over Pt(111)
SO JOURNAL OF CATALYSIS
LA English
DT Article
DE Pt(111); CO TPD on Pt(111)/Sn/K; hydrogenation of ethylene on
Pt(111)/Sn/K; dehydrogenation of cyclohexane on Pt(111)/Sn/K
ID SN/PT(111) SURFACE ALLOYS; SINGLE-CRYSTAL SURFACES; CARBON-MONOXIDE;
ISOBUTANE DEHYDROGENATION; ATMOSPHERIC-PRESSURE; PT/SN CATALYSTS;
COADSORPTION; ADSORPTION; PLATINUM; HYDROGENOLYSIS
AB Stable ordered structures of Sn on Pt(111) (maximum coverage of 0.33 monolayers) were used as model catalysts to test the effect of tin and potassium on the hydrogenation of ethylene at 300 K and dehydrogenation of cyclohexane at 573 It and at pressures of 15 Torr of hydrocarbon and 100 Torr of H-2. Co-adsorption of tin and potassium on Pt(111) resulted in the direct interaction between potassium, tin, and platinum as verified by temperature-programmed desorption of CO. Tin deposition yielded a maximum in the turnover rate as a function of Sn coverage for ethylene hydrogenation and cyclohexane dehydrogenation with maxima at about 0.2 monolayers of tin and a turnover rate 75% higher than on clean Pt(111), This enhancement was explained by a lower rate of deactivation as tin was added. In contrast, the addition of potassium to Pt and Pt/Sn produced only a monotonic decrease in cyclohexane dehydrogenation. In an industrial system, where a higher tin coverage is used, interaction of tin with potassium may form an effective site blocker which could lower deactivation rates. (C) 1998 Academic Press.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Ribeiro, FH (reprint author), Worcester Polytech Inst, Dept Chem Engn, Worcester, MA 01609 USA.
OI Ribeiro, Fabio/0000-0001-7752-461X
NR 40
TC 47
Z9 48
U1 2
U2 16
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9517
J9 J CATAL
JI J. Catal.
PD AUG 15
PY 1998
VL 178
IS 1
BP 66
EP 75
DI 10.1006/jcat.1998.2122
PG 10
WC Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 112RZ
UT WOS:000075509100007
ER
PT J
AU Fisher, IA
Bell, AT
AF Fisher, IA
Bell, AT
TI In situ infrared study of methanol synthesis from H-2/CO over Cu/SiO2
and Cu/ZrO2/SiO2
SO JOURNAL OF CATALYSIS
LA English
DT Article
ID SUPPORTED COPPER-CATALYSTS; CARBON-MONOXIDE; AEROGEL CATALYSTS;
ZIRCONIUM DIOXIDE; CO2 HYDROGENATION; SYNTHESIS MECHANISM; CU-ZRO2
CATALYSTS; ZINC-OXIDE; ADSORPTION; SURFACE
AB The interactions of CO and H-2/CO with Cu/SiO2, ZrO2/SiO2, and Cu/ZrO2/SiO2 have been investigated by in situ infrared spectroscopy with the aim of understanding the nature of the species involved in methanol synthesis and the dynamics of the formation and consumption of these species. In the case of Cu/SiO2, carbonate species adsorbed on Cu and methoxide species adsorbed on Cu and silica are observed at 523 K, H-2/CO = 3, and a total pressure of 0.65 MPa. When ZrO2/SiO2 or Cu/ZrO2/SiO2 is exposed to H-2/CO, the majority of the species observed are associated with ZrO2. CO adsorption on either ZrO2/SiO2 or Cu/ZrO2/SiO2 results in the formation of carboxylate, bicarbonate, and formate species on zirconia. In the presence of H-2, formate species are hydrogenated to methoxide species adsorbed on ZrO2. The presence of Cu greatly accelerates the rate of formate hydrogenation to methoxide species, a process in which methylenebisoxy species are observed as intermediates. Cu also significantly promotes the reductive elimination of methoxide species as methanol. Thus, methanol synthesis over Cu/ZrO2/SiO2 is envisioned to occur on ZrO2, with the primary role of Cu being the dissociative adsorption of H-2. The spillover of atomic H onto ZrO2 provides the source of hydrogen needed to hydrogenate the carbon-containing species. Spillover of absorbed CO from Cu to zirconia facilitates formate formation on zirconia at lower temperatures than in the absence of Cu. The reductive elimination of methoxide species appears to be the slow step in methanol formation by CO hydrogenation. The lower rate of methanol synthesis over Cu/ZrO2/SiO2 from CO as compared to CO2 hydrogenation is attributed to the lack of water formation in the former reaction, preventing facile release of methoxide by hydrolysis. The enhanced rate of methanol synthesis from CO over Cu/ZrO2/SiO2 as compared to Cu/SiO2 is attributed to the lower energy-barrier (formate) pathway available on Cu/ZrO2/SiO2. (C) 1998 Academic Press.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
RP Bell, AT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
OI Bell, Alexis/0000-0002-5738-4645
NR 52
TC 109
Z9 112
U1 1
U2 70
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9517
J9 J CATAL
JI J. Catal.
PD AUG 15
PY 1998
VL 178
IS 1
BP 153
EP 173
DI 10.1006/jcat.1998.2134
PG 21
WC Chemistry, Physical; Engineering, Chemical
SC Chemistry; Engineering
GA 112RZ
UT WOS:000075509100016
ER
PT J
AU Harris, RA
Salsbury, FR
AF Harris, RA
Salsbury, FR
TI The exchange energy functional in a weak magnetic field
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID ELECTRON-GAS; DENSITY; SUSCEPTIBILITY
AB A density functional theory for the Kohn-Sham exchange energy of a bounded, closed shell system in a weak, uniform, magnetic field is presented. The form obtained vanishes when the electron density is radial and, unlike the unscreened exchange energy of a locally uniform electron gas, does not diverge due to the Coulomb interaction. The role of the exchange-correlation functional in the context of magnetic response theory is also examined. (C) 1998 American Institute of Physics.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Harris, RA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI Salsbury, Freddie/A-5923-2008
NR 19
TC 3
Z9 3
U1 0
U2 0
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 15
PY 1998
VL 109
IS 7
BP 2609
EP 2613
DI 10.1063/1.476874
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 108MY
UT WOS:000075271100005
ER
PT J
AU Skokov, S
Peterson, KA
Bowman, JM
AF Skokov, S
Peterson, KA
Bowman, JM
TI An accurate ab initio HOCl potential energy surface, vibrational and
rotational calculations, and comparison with experiment
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID CONFIGURATION-INTERACTION CALCULATIONS; CORRELATED MOLECULAR
CALCULATIONS; ANHARMONIC-FORCE FIELD; GAUSSIAN-BASIS SETS; HYPOCHLOROUS
ACID; WAVE-FUNCTIONS; BENCHMARK CALCULATIONS; EQUILIBRIUM STRUCTURE;
ABINITIO CALCULATION; O(D-1)+HCL REACTION
AB Accurate ab initio multireference configuration interaction (CI) calculations with large correlation-consistent basis sets are performed for HOCl. After extrapolation to the complete basis set limit, the ab initio data are precisely fit to give a semiglobal three-dimensional potential energy surface to describe HOCl-->Cl+OH from high overtone excitation of the OH-stretch. The average absolute deviation between the ab initio and fitted energies is 4.2 cm(-1) for energies up to 60 kcal/mol relative to the HOCl minimum. Vibrational energies of HOCl including the six overtones of the OH-stretch are computed using a vibrational-Cl method on the fitted potential and also on a slightly adjusted potential. Near-spectroscopic accuracy is obtained using the adjusted potential; the average absolute deviation between theory and experiment for 19 experimentally reported states is 4.8 cm(-1). Very good agreement with experiment is also obtained for numerous rotational energies for the ground vibrational state, the ClO-stretch fundamental, and the fifth overtone of the OH-stretch. (C) 1998 American Institute of Physics.
C1 Emory Univ, Dept Chem, Atlanta, GA 30322 USA.
Emory Univ, Cherry L Emerson Ctr Sci Computat, Atlanta, GA 30322 USA.
Washington State Univ, Dept Chem, Richland, WA 99352 USA.
Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Bowman, JM (reprint author), Emory Univ, Dept Chem, 1515 Pierce Dr, Atlanta, GA 30322 USA.
EM bowman@euch3g.chem.emory.edu
NR 61
TC 102
Z9 102
U1 0
U2 7
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 15
PY 1998
VL 109
IS 7
BP 2662
EP 2671
DI 10.1063/1.476865
PG 10
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 108MY
UT WOS:000075271100012
ER
PT J
AU Hummer, G
Gronbech-Jensen, N
Neumann, M
AF Hummer, G
Gronbech-Jensen, N
Neumann, M
TI Pressure calculation in polar and charged systems using Ewald summation:
Results for the extended simple point charge model of water
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATIONS; PERIODIC BOUNDARY-CONDITIONS; PARTICLE
MESH EWALD; PAIR POTENTIALS; SUMS; TENSOR
AB Ewald summation and physically equivalent methods such as particle-mesh Ewald, kubic-harmonic expansions, or Lekner sums are commonly used to calculate long-range electrostatic interactions in computer simulations of polar and charged substances. The calculation of pressures in such systems is investigated. We find that the virial and thermodynamic pressures differ because of the explicit volume dependence of the effective, resummed Ewald potential. The thermodynamic pressure, obtained from the volume derivative of the Helmholtz free energy, can be expressed easily for both ionic and rigid molecular systems. For. a system of rigid molecules, the electrostatic energy and the forces at the atom positions are required, both of which are readily available in molecular dynamics codes. We then calculate the virial and thermodynamic pressures for the extended simple point charge (SPC/E) water model at standard conditions. We find that the thermodynamic pressure exhibits considerably less system size dependence than the virial pressure. From an analysis of the cross correlation between the virial and thermodynamic pressure, we conclude that the thermodynamic pressure should be used to drive volume fluctuations in constant-pressure simulations. (C) 1998 American Institute of Physics.
C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria.
RP Hummer, G (reprint author), Los Alamos Natl Lab, Div Theoret, MS K710, Los Alamos, NM 87545 USA.
RI Hummer, Gerhard/A-2546-2013
OI Hummer, Gerhard/0000-0001-7768-746X
NR 30
TC 56
Z9 56
U1 0
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
EI 1089-7690
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 15
PY 1998
VL 109
IS 7
BP 2791
EP 2797
DI 10.1063/1.476834
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 108MY
UT WOS:000075271100025
ER
PT J
AU Hsueh, CH
AF Hsueh, CH
TI Elastic strain energy change during matrix cracking in unidirectional,
fiber-reinforced ceramic composites
SO JOURNAL OF MATERIALS SCIENCE LETTERS
LA English
DT Article
ID FRICTIONAL BRIDGING FIBERS; MECHANICS; STRESSES; GLASS
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
RP Hsueh, CH (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA.
RI Hsueh, Chun-Hway/G-1345-2011
NR 17
TC 1
Z9 1
U1 0
U2 2
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0261-8028
J9 J MATER SCI LETT
JI J. Mater. Sci. Lett.
PD AUG 15
PY 1998
VL 17
IS 16
BP 1421
EP 1425
DI 10.1023/A:1026461404966
PG 5
WC Materials Science, Multidisciplinary
SC Materials Science
GA 183GK
UT WOS:000079545700022
ER
PT J
AU Campbell, GH
Foiles, SM
Huang, HC
Hughes, DA
King, WE
Lassila, DH
Nikkel, DJ
de la Rubia, TD
Shu, JY
Smyshlyaev, VP
AF Campbell, GH
Foiles, SM
Huang, HC
Hughes, DA
King, WE
Lassila, DH
Nikkel, DJ
de la Rubia, TD
Shu, JY
Smyshlyaev, VP
TI Multi-scale modeling of polycrystal plasticity: a workshop report
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Review
DE mechanics; plasticity; multi-scale modeling; dislocation dynamics
ID ORIENTATION IMAGING MICROSCOPY; HIGH-STRAIN-RATE; NONLINEARLY VISCOUS
COMPOSITES; LOW-SYMMETRY CRYSTALS; TRIPLE JUNCTIONS; CONSTITUTIVE
RESPONSE; DISLOCATION DYNAMICS; TRANSITION-METALS; GRAIN-BOUNDARIES;
SINGLE-CRYSTALS
AB The workshop on multi-scale modeling of polycrystal plasticity was held on April 9-11, 1997 at the Institute for Mechanics and Materials at the University of California, San Diego in La Jolla, CA. This workshop addressed length-scale issues associated with developing a predictive capability in the modeling of the plastic deformation of polycrystals by the incorporation of more physically based information in the models. The goals of the workshop were to: (1) establish a model system that is well suited to the multi-scale modeling methodology; (2) explore a set of discrete simulation methods at the continuum-scale, meso-scale, micro-scale, and atomic-scale; and (3) identify critical links connecting the length scales which will allow information to be passed among scales and allow the end goal of predictive models at the continuum scale. This paper presents the technical summary of the topics covered by the speakers at the workshop and a discussion of critical issues at each length scale. Published by Elsevier Science S.A. All rights reserved.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
Sandia Natl Labs, Livermore, CA 94551 USA.
Univ Bath, Bath BA2 7AY, Avon, England.
RP Campbell, GH (reprint author), Lawrence Livermore Natl Lab, POB 808,MS L-356, Livermore, CA 94551 USA.
EM ghcampbell@unl.gov
RI Huang, Hanchen/A-9323-2008; Campbell, Geoffrey/F-7681-2010;
OI Foiles, Stephen/0000-0002-1907-454X
NR 110
TC 38
Z9 38
U1 0
U2 13
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD AUG 15
PY 1998
VL 251
IS 1-2
BP 1
EP 22
DI 10.1016/S0921-5093(98)00640-6
PG 22
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 114VB
UT WOS:000075628900001
ER
PT J
AU Erck, RA
Maiya, PS
AF Erck, RA
Maiya, PS
TI Fracture behavior of graphite coated with titanium compounds by chemical
vapor deposition
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE TiC; TiN; TiCN; TiB2; graphite; adhesion; Weibull
ID SILVER FILMS; ADHESION
AB TIG, TIN, TIE,, and TiCN coatings were deposited on graphite by high-temperature chemical vapor deposition. Pin-pull tests were used to investigate the adhesion of the coatings to the graphite. Interfacial adhesion was excellent and failure occurred in the graphite itself. The distribution of failure stresses was analyzed by Weibull statistical analysis, which showed a good lit to the Weibull expression; failure stresses for the coated graphite were approximately one-half that of the uncoated graphite, although the Weibull moduli were comparable. (C) 1998 Elsevier Science S.A. All rights reserved.
C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA.
RP Erck, RA (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 26
TC 6
Z9 6
U1 0
U2 1
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD AUG 15
PY 1998
VL 251
IS 1-2
BP 251
EP 254
DI 10.1016/S0921-5093(98)00637-6
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 114VB
UT WOS:000075628900030
ER
PT J
AU Gabrisch, H
Dahmen, U
Johnson, E
AF Gabrisch, H
Dahmen, U
Johnson, E
TI In situ measurement of dihedral angles at liquid grain boundary
inclusions
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE dihedral angles; liquid grain boundary inclusions; relative interfacial
energies; polycrystalline material; crystallography
ID PARTICLES; ALUMINUM
AB This work describes experimental aspects of the measurement of relative interfacial energies from the equilibrium dihedral angles of small liquid inclusions or precipitates at interfaces in solids using in situ transmission electron microscopy. We demonstrate how limitations such as faceting, free surfaces, and projection errors can be handled to minimize experimental errors. Microsc. Res. Tech. 42:241-247, 1998. (C) 1998 Wiley-Liss, Inc.
C1 LBNL, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
Univ Copenhagen, Niels Bohr Inst, Orsted Lab, DK-2100 Copenhagen, Denmark.
RP Gabrisch, H (reprint author), LBNL, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
RI Gabrisch, Heike/I-5021-2013
NR 13
TC 8
Z9 8
U1 0
U2 3
PU WILEY-LISS
PI NEW YORK
PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD AUG 15
PY 1998
VL 42
IS 4
BP 241
EP 247
DI 10.1002/(SICI)1097-0029(19980915)42:4<241::AID-JEMT2>3.0.CO;2-T
PG 7
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 124ED
UT WOS:000076167700002
PM 9779828
ER
PT J
AU Wall, MA
Dahmen, U
AF Wall, MA
Dahmen, U
TI An in situ nanoindentation specimen holder for a high voltage
transmission electron microscope
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE nanoindentation; cross-section; in situ TEM
ID SILICON; HARDNESS; LOAD
AB We describe in detail, the design, construction, and testing of a specimen holder that allows for the nanoindentation of surfaces while viewing in cross-section in a high voltage transmission electron microscope (TEM). This nanoindentation specimen holder, having three-axis position control of a diamond indenter in combination with micromachined specimens, allows for the first time the dynamic observation of subsurface microstructure evolution under an indenter tip. Additionally, the sample design techniques that have been developed for these procedures may eliminate the need for TEM specimen preparation for additional ex situ nanoindentation experiments. Initial experimental results from in situ indentation of Si samples in the high voltage electron microscope are reported here to demonstrate the capability of this new specimen holder. Miscrosc. Res. Tech. 42:248-254, 1998. (C) 1998 Wiley-Liss, Inc.
C1 Univ Calif Lawrence Livermore Natl Lab, Dept Chem & Mat Sci, Livermore, CA 94550 USA.
RP Dahmen, U (reprint author), Univ Calif Lawrence Livermore Natl Lab, Dept Chem & Mat Sci, 7000 East Ave, Livermore, CA 94550 USA.
NR 9
TC 45
Z9 45
U1 0
U2 14
PU WILEY-LISS
PI NEW YORK
PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD AUG 15
PY 1998
VL 42
IS 4
BP 248
EP 254
DI 10.1002/(SICI)1097-0029(19980915)42:4<248::AID-JEMT3>3.0.CO;2-M
PG 7
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 124ED
UT WOS:000076167700003
PM 9779829
ER
PT J
AU Allen, CW
Ryan, EA
AF Allen, CW
Ryan, EA
TI In situ transmission electron microscopy employed for studies of effects
of ion and electron irradiation on materials
SO MICROSCOPY RESEARCH AND TECHNIQUE
LA English
DT Article
DE irradiation effect; HVEM; ion implantation; cascade damage; defect; ion
beam
ID BEAM; FACILITY; INSITU
AB This paper summarizes the essential features of the various facilities dedicated to in situ irradiation effects research around the world at the present time, mentions some essential techniques that are involved in this type of research, and describes very briefly some examples of studies employing these facilities and techniques. Microsc. Res. Tech. 42:255-259, 1998. (C) 1998 Wiley-Liss, Inc.
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Allen, CW (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 16
TC 16
Z9 17
U1 0
U2 2
PU WILEY-LISS
PI NEW YORK
PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA
SN 1059-910X
J9 MICROSC RES TECHNIQ
JI Microsc. Res. Tech.
PD AUG 15
PY 1998
VL 42
IS 4
BP 255
EP 259
DI 10.1002/(SICI)1097-0029(19980915)42:4<255::AID-JEMT4>3.0.CO;2-P
PG 5
WC Anatomy & Morphology; Biology; Microscopy
SC Anatomy & Morphology; Life Sciences & Biomedicine - Other Topics;
Microscopy
GA 124ED
UT WOS:000076167700004
PM 9779830
ER
PT J
AU Islas, AL
Fairley, CF
Morgan, WF
AF Islas, AL
Fairley, CF
Morgan, WF
TI DNA synthesis on discontinuous templates by human DNA polymerases:
implications for non-homologous DNA recombination
SO NUCLEIC ACIDS RESEARCH
LA English
DT Article
ID RADIATION-INDUCED MUTATIONS; DOUBLE-STRAND BREAKS; IONIZING-RADIATION;
MAMMALIAN-CELLS; NONHOMOLOGOUS RECOMBINATION; ILLEGITIMATE
RECOMBINATION; V(D)J RECOMBINATION; ESCHERICHIA-COLI; KLENOW FRAGMENT;
MECHANISMS
AB DNA polymerases catalyze the synthesis of DNA using a continuous uninterrupted template strand, However, it has been shown that a 3'-->5' exonuclease-deficient form of the Klenow fragment of Escherichia coli DNA polymerase I as well as DNA polymerase of Thermus aquaticus can synthesize DNA across two unlinked DNA templates. In this study, we used an oligonucleotide-based assay to show that discontinuous DNA synthesis was present in HeLa cell extracts. DNA synthesis inhibitor studies as well as fractionation of the extracts revealed that most of the discontinuous DNA synthesis was attributable to DNA polymerase alpha. Additionally, discontinuous DNA synthesis could be eliminated by incubation with an antibody that specifically neutralized DNA polymerase alpha activity. To test the relative efficiency of each nuclear DNA polymerase for discontinuous synthesis, equal amounts (as measured by DNA polymerase activity) of DNA polymerases alpha, beta, delta (+/- PCNA) and epsilon (+/- PCNA) were used in the discontinuous DNA synthesis assay, DNA polymerase alpha showed the most discontinuous DNA synthesis activity, although small but detectable levels were seen for DNA polymerases delta (+PCNA) and epsilon (PCNA), Klenow fragment and DNA polymerase beta showed no discontinuous DNA synthesis, although at much higher amounts of each enzyme, discontinuous synthesis was seen for both, Discontinuous DNA synthesis by DNA polymerase alpha was seen with substrates containing 3 and 4 bp single-strand stretches of complementarity; however, little synthesis was seen with blunt substrates or with 1 bp stretches, The products formed from these experiments are structurally similar to that seen in vivo for non-homologous end joining in eukaryotic cells. These data suggest that DNA polymerase alpha may be able to rejoin double-strand breaks in vivo during replication.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
Univ Calif San Francisco, Dept Radiat Oncol, San Francisco, CA 94143 USA.
RP Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd,M-S 934-47A, Berkeley, CA 94720 USA.
EM aislas@lbl.gov
NR 30
TC 7
Z9 7
U1 0
U2 1
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0305-1048
EI 1362-4962
J9 NUCLEIC ACIDS RES
JI Nucleic Acids Res.
PD AUG 15
PY 1998
VL 26
IS 16
BP 3729
EP 3738
PG 10
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 110YB
UT WOS:000075408200016
ER
PT J
AU Wilson, DM
Carney, JP
Coleman, MA
Adamson, AW
Christensen, M
Lamerdin, JE
AF Wilson, DM
Carney, JP
Coleman, MA
Adamson, AW
Christensen, M
Lamerdin, JE
TI Hex1: a new human Rad2 nuclease family member with homology to yeast
exonuclease 1
SO NUCLEIC ACIDS RESEARCH
LA English
DT Article
ID NUCLEOTIDE EXCISION-REPAIR; DOUBLE-STRAND BREAKS;
SACCHAROMYCES-CEREVISIAE; MISMATCH REPAIR; MAMMALIAN-CELLS;
DNA-REPLICATION; IN-VITRO; RECOMBINATION; GENES; EXPRESSION
AB Nucleolytic processing of chromosomal DMA is required in operations such as DNA repair, recombination and replication. We have identified a human gene, named HEX1 for human exonuclease 1, by searching the EST database for cDNAs that encode a homolog to the Saccharomyces cerevisiae EXO1 gene product. Based can its homology to this and other DNA repair proteins of the Rad2 family most notably Schizosaccharomyces pombe exonuclease 1 (Exo1), Hex1 presumably functions as a nuclease in aspects of recombination or mismatch repair. Similar to the yeast proteins, recombinant Hex1 exhibits a 5'-->3' exonuclease activity. Northern blot analysis revealed that HEX1 expression is highest in fetal liver and adult bone marrow, suggesting that the encoded protein may operate prominently in processes specific to hemopoietic stem cell development. HEX1 gene equivalents were found in all vertebrates examined. The human gene includes 14 exons and 13 introns that span similar to 42 kb of genomic DNA and maps to the chromosomal position 1q42-43, a region lost in some cases of acute leukemia and in several solid tumors.
C1 Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA.
Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
Univ Calif San Francisco, Dept Radiat Oncol, San Francisco, CA 94103 USA.
RP Wilson, DM (reprint author), Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, L-452, Livermore, CA 94551 USA.
EM wilson61@llnl.gov
OI Coleman, Matthew/0000-0003-1389-4018
FU NCI NIH HHS [CA09215-12]
NR 46
TC 76
Z9 77
U1 0
U2 0
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0305-1048
J9 NUCLEIC ACIDS RES
JI Nucleic Acids Res.
PD AUG 15
PY 1998
VL 26
IS 16
BP 3762
EP 3768
DI 10.1093/nar/26.16.3762
PG 7
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 110YB
UT WOS:000075408200020
PM 9685493
ER
PT J
AU Sweetser, JN
Trebino, R
AF Sweetser, JN
Trebino, R
TI Reduced-background gas-phase absorption spectroscopy
SO OPTICS LETTERS
LA English
DT Article
ID LASER
AB We propose and demonstrate a new method for single-shot multiplex absorption spectroscopy that permits enhanced sensitivity in the simultaneous measurement of multiple spectral lines in rapidly changing gas-phase media, such as turbulent flames. It uses an ultrashort laser pulse that propagates through the absorbing medium, for which the relevant absorption information resides in the free-induction decay that is trailing behind the transmitted pulse. Time gating out most of the transmitted pulse, but not the free-induction decay, enhances the relative fraction of light that contains absorption information when the spectrum is measured. This procedure reduces the background associated with the input light, thus enhancing detection sensitivity. (C) 1998 Optical Society of America.
C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
RP Sweetser, JN (reprint author), Sandia Natl Labs, Combust Res Facil, MS 9051, Livermore, CA 94551 USA.
NR 9
TC 1
Z9 1
U1 0
U2 0
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD AUG 15
PY 1998
VL 23
IS 16
BP 1289
EP 1291
DI 10.1364/OL.23.001289
PG 3
WC Optics
SC Optics
GA 111GE
UT WOS:000075428300015
PM 18087501
ER
PT J
AU Gehr, RJ
Kimmel, RW
Smith, AV
AF Gehr, RJ
Kimmel, RW
Smith, AV
TI Simultaneous spatial and temporal walk-off compensation in
frequency-doubling femtosecond pulses in beta-BaB2O4
SO OPTICS LETTERS
LA English
DT Article
AB We experimentally demonstrate the benefits of simultaneous compensation of spatial and temporal walk-off in frequency doubling of 800-nm 250-fs pulses, using three active and two compensating beta-BaB2O4 crystals. The compensating crystals reverse both birefringent and group-velocity walk-off, resulting in a factor-of-4.5 improvement in doubling efficiency relative to one of the active crystals while maintaining the short pulse duration and the symmetric spatial profile that are characteristic of the single crystal. (C) 1998 Optical Society of America.
C1 Sandia Natl Labs, Dept Lasers Opt & Remote Sensing 1128, Albuquerque, NM 87185 USA.
RP Gehr, RJ (reprint author), Sandia Natl Labs, Dept Lasers Opt & Remote Sensing 1128, POB 5800, Albuquerque, NM 87185 USA.
NR 11
TC 17
Z9 17
U1 1
U2 7
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD AUG 15
PY 1998
VL 23
IS 16
BP 1298
EP 1300
DI 10.1364/OL.23.001298
PG 3
WC Optics
SC Optics
GA 111GE
UT WOS:000075428300018
PM 18087504
ER
PT J
AU Shaw, RW
Whitten, WB
Barnes, MD
Ramsey, JM
AF Shaw, RW
Whitten, WB
Barnes, MD
Ramsey, JM
TI Time-domain observation of optical pulse propagation in
whispering-gallery modes of glass spheres
SO OPTICS LETTERS
LA English
DT Article
ID SPHERICAL-PARTICLES; FIBER; MICROSPHERES; EXCITATION; SCATTERING;
RESONANCES
AB We report picosecond time-resolved measurements of optical pulse propagation in dielectric spheres (8, 10, and 26 mm in diameter) for which the pulse duration (approximate to 2 ps) was short compared with the equatorial round-trip time within the sphere. A size-independent buildup of the leakage intensity in terms of the number of round trips was observed for each of the spheres, as were damped low-frequency oscillations superimposed upon the pulse ringdown envelope. These features of the data are interpreted as resulting from perturbative coupling of eigenmodes of the sphere and trajectory precession near the observation region. (C) 1998 Optical Society of America.
C1 Oak Ridge Natl Lab, Chem & Analyt Sci Div, Oak Ridge, TN 37831 USA.
RP Shaw, RW (reprint author), Oak Ridge Natl Lab, Chem & Analyt Sci Div, Oak Ridge, TN 37831 USA.
NR 10
TC 16
Z9 16
U1 0
U2 1
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD AUG 15
PY 1998
VL 23
IS 16
BP 1301
EP 1303
DI 10.1364/OL.23.001301
PG 3
WC Optics
SC Optics
GA 111GE
UT WOS:000075428300019
PM 18087505
ER
PT J
AU Zurek, WH
AF Zurek, WH
TI Decoherence, einselection and the existential interpretation (the rough
guide)
SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL
AND ENGINEERING SCIENCES
LA English
DT Article
DE decoherence; einselection; environment-induced superselection
ID WAVE PACKET; CONSISTENT HISTORIES; QUANTUM COMPUTATION; COHERENT STATES;
ENVIRONMENT; PREDICTABILITY; CLASSICALITY; INFORMATION; EMERGENCE;
MECHANICS
AB The roles of decoherence and environment-induced superselection in the emergence of the classical fi-om the quantum substrate are described. The stability of correlations between the einselected quantum pointer states and the environment allows them to exist almost as objectively as classical states were once thought to exist: there are ways of finding out what is the pointer state of the system which uses redundancy of its correlations with the environment, and which leave einselected states essentially unperturbed. This relatively objective existence of certain quantum states facilitates operational definition of probabilities in the quantum setting. Moreover, once there are states that 'exist' and can be 'found out', a 'collapse' in the traditional sense is no longer necessary-in effect, it has already happened. The role of the preferred states in the processing and storage of information is emphasized. The existential interpretation based on the relatively objective existence of stable correlations between the einselected states of observers' memory and in the outside universe is formulated and discussed.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Zurek, WH (reprint author), Univ Calif Los Alamos Natl Lab, MS B288,T-6, Los Alamos, NM 87545 USA.
NR 73
TC 109
Z9 109
U1 1
U2 5
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-503X
J9 PHILOS T R SOC A
JI Philos. Trans. R. Soc. A-Math. Phys. Eng. Sci.
PD AUG 15
PY 1998
VL 356
IS 1743
BP 1793
EP 1821
DI 10.1098/rsta.1998.0250
PG 29
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 113TJ
UT WOS:000075568100013
ER
PT J
AU Hughes, RJ
AF Hughes, RJ
TI Cryptography, quantum computation and trapped ions
SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL
AND ENGINEERING SCIENCES
LA English
DT Article
DE public-key cryptography; laser cooling; decoherence; quantum computation
ID MECHANICAL COMPUTERS; DECOHERENCE BOUNDS; SPECTROSCOPY; LOGIC
AB The significance of quantum computation for cryptography is discussed. Following a brief survey of the requirements for quantum computational hardware, an overview of the ion-trap quantum-computation project at Los Alamos is presented. The physical limitations to quantum computation with trapped ions are analysed and an assessment of the computational potential of the technology is made.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Hughes, RJ (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
NR 41
TC 6
Z9 6
U1 0
U2 0
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-503X
J9 PHILOS T R SOC A
JI Philos. Trans. R. Soc. A-Math. Phys. Eng. Sci.
PD AUG 15
PY 1998
VL 356
IS 1743
BP 1853
EP 1868
DI 10.1098/rsta.1998.0253
PG 16
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 113TJ
UT WOS:000075568100017
ER
PT J
AU Laflamme, R
Knill, E
Zurek, WH
Catasti, P
Mariappan, SVS
AF Laflamme, R
Knill, E
Zurek, WH
Catasti, P
Mariappan, SVS
TI NMR Greenberger-Horne-Zeilinger states
SO PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL
AND ENGINEERING SCIENCES
LA English
DT Article
DE foundation of quantum mechanics; quantum computers; entanglement
ID QUANTUM LOGIC GATE; COMPUTATION; UNIVERSAL
AB We describe the creation of a Greenberger-Horne-Zeilinger state of the form (\000] + \111])/ root 2 (three maximally entangled quantum bits) using nuclear magnetic resonance. We have successfully carried out the experiment using the proton and carbon spins of trichloroethylene, and confirmed the result using state tomography. We have thus extended the space of entangled quantum states explored systematically to three quantum bits, an essential step for quantum computation.
C1 Los Alamos Natl Lab, Los Alamos, NM 87455 USA.
RP Laflamme, R (reprint author), Los Alamos Natl Lab, T-6,MS B-288, Los Alamos, NM 87455 USA.
NR 19
TC 69
Z9 70
U1 0
U2 5
PU ROYAL SOC
PI LONDON
PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND
SN 1364-503X
J9 PHILOS T R SOC A
JI Philos. Trans. R. Soc. A-Math. Phys. Eng. Sci.
PD AUG 15
PY 1998
VL 356
IS 1743
BP 1941
EP 1947
PG 7
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 113TJ
UT WOS:000075568100024
ER
PT J
AU Pearson, JE
Ponce-Dawson, S
AF Pearson, JE
Ponce-Dawson, S
TI Crisis on skid row
SO PHYSICA A
LA English
DT Article; Proceedings Paper
CT Vth Latin American Workshop on Non-Linear Phenomena/11th MEDYFINOL
Conference on Statistical Physics of Dynamic and Complex Systems
CY SEP 28-OCT 03, 1997
CL CANELA, BRAZIL
ID RAT-HEART CELLS; INOSITOL TRISPHOSPHATE; CALCIUM-RELEASE; SPARKS; CA2+;
ELEMENTARY; MUSCLE; WAVES; MICRODOMAINS
AB We consider an idealized model of Ca2+ release from internal stores in living cells (the skid row relay) in order to explore the effect of the distribution of release sites. The skid row relay is an all or none release model in which a fixed amount of Ca2+ is released when the cytosolic Ca2+ density in the vicinity of the release site reaches a threshold. Depending on the time and space scales the skid row relay can support traveling waves with a velocity that scales as either D-1/2 Or D (where D is the diffusion coefficient for Ca2+). The former scaling holds when the continuum approximation for the distribution of release sites is valid. The latter holds when the release sites are sufficiently far apart. We determine an analytic expression for the velocity of propagating waves in the two regimes. In the discrete case it can be shown that traveling wave solutions do not exist if the release sites are too far apart or do not release enough Ca2+ or if the threshold for release is too high. Well before the traveling wave ceases to exist, the wave loses stability through period doubling and crisis. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Div Appl Theoret Phys, Los Alamos, NM 87545 USA.
Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina.
Univ Buenos Aires, Fac Ciencias Exactas & Nat, IAFE, RA-1428 Buenos Aires, DF, Argentina.
RP Pearson, JE (reprint author), Univ Calif Los Alamos Natl Lab, Div Appl Theoret Phys, XCM MS F645, Los Alamos, NM 87545 USA.
OI Ponce Dawson, Silvina/0000-0001-6550-4267
NR 16
TC 29
Z9 30
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4371
J9 PHYSICA A
JI Physica A
PD AUG 15
PY 1998
VL 257
IS 1-4
BP 141
EP 148
DI 10.1016/S0378-4371(98)00136-8
PG 8
WC Physics, Multidisciplinary
SC Physics
GA 119BY
UT WOS:000075876500016
ER
PT J
AU Ponce-Dawson, S
Pearson, JE
Reynolds, WN
AF Ponce-Dawson, S
Pearson, JE
Reynolds, WN
TI Geometric features of microtubule dynamics
SO PHYSICA A
LA English
DT Article; Proceedings Paper
CT Vth Latin American Workshop on Non-Linear Phenomena/11th MEDYFINOL
Conference on Statistical Physics of Dynamic and Complex Systems
CY SEP 28-OCT 03, 1997
CL CANELA, BRAZIL
DE microtubules; dynamic instability; spatial organization
ID INSTABILITY; SIMULATION; TUBULIN
AB Microtubules are long and stiff polymers that form the cytoskeleton of eucaryotic cells. They perform a series of tasks, such as determining the cell shape and providing a network of "rails'' along which molecular motors transport organelles to different parts of the cell. They are particularly important during the process of cell division, since they provide the forces by which replicated chromosomes are segregated into what will be the two daughter cells. Microtubules are formed from a protein called tubulin and undergo a process called dynamic instability. In this paper we study, via numerical simulations of some simplified models, how the interaction between microtubules and the diffusion of free tubulin affects their spatial organization. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina.
Univ Buenos Aires, Fac Ciencias Exactas & Nat, IAFE, RA-1428 Buenos Aires, DF, Argentina.
Univ Calif Los Alamos Natl Lab, Div Appl Theoret Phys, Los Alamos, NM 87545 USA.
Bios Grp LP, Santa Fe, NM 87501 USA.
RP Ponce-Dawson, S (reprint author), Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, Cuidad Univ,Pabellon 1, RA-1428 Buenos Aires, DF, Argentina.
OI Ponce Dawson, Silvina/0000-0001-6550-4267
NR 8
TC 1
Z9 1
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4371
J9 PHYSICA A
JI Physica A
PD AUG 15
PY 1998
VL 257
IS 1-4
BP 156
EP 164
DI 10.1016/S0378-4371(98)00138-1
PG 9
WC Physics, Multidisciplinary
SC Physics
GA 119BY
UT WOS:000075876500018
ER
PT J
AU Wang, XS
Li, QM
Soukoulis, CM
AF Wang, XS
Li, QM
Soukoulis, CM
TI Scaling properties of conductance at integer quantum Hall plateau
transitions
SO PHYSICAL REVIEW B
LA English
DT Article
ID INSULATOR-TRANSITION; LOCALIZATION; FLUCTUATIONS; UNIVERSALITY;
CONDUCTIVITY; TRANSMISSION; SYSTEMS
AB We investigate the scaling properties of zero-temperature conductances at integer quantum Hall plateau transitions in the lowest Landau band of a two-dimensional tight-binding model. Scaling is obeyed for all energy and system sizes with critical exponent v approximate to 7/3. The arithmetic average of the conductance at the localization-delocalization critical point is found to be [G](c) = 0.506e(2)/h, in agreement with the universal longitudinal conductance [sigma(xx)] = 1/2e(2)/h predicted by an analytical theory. The probability distribution of the conductance at the critical point is broad with a dip at small G.
C1 US DOE, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Wang, XS (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
RI Soukoulis, Costas/A-5295-2008
NR 27
TC 31
Z9 31
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 3576
EP 3579
DI 10.1103/PhysRevB.58.3576
PG 4
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800027
ER
PT J
AU Jellison, GE
Boatner, LA
AF Jellison, GE
Boatner, LA
TI Optical functions of uniaxial ZnO determined by generalized ellipsometry
SO PHYSICAL REVIEW B
LA English
DT Article
ID TEMPERATURE; CRYSTALS; EXCITON
AB The optical functions of uniaxial ZnO have been determined using two-modulator generalized ellipsometry, where a single measurement is sufficient to determine the optical functions from appropriately aligned uniaxial crystals. Above the direct band edge (similar to 3.3 eV), this technique produces the most accurate values of the optical functions of ZnO presently available, while the refractive indices determined below the direct band edge agree with minimum-deviation methods. Near the direct band edge, the optical functions are modified by the excitonic interaction with a three-dimensional critical point. The optical dielectric response functions are fit to a recent formulation by Holden et al. [Phys. Rev. B 56, 4037 (1997)]. One isotropic point in the spectrum was observed at 3.114 eV, and a near-isotropic point near 3.31-3.34 eV.
C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
RP Jellison, GE (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA.
OI Boatner, Lynn/0000-0002-0235-7594
NR 20
TC 154
Z9 157
U1 2
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 3586
EP 3589
DI 10.1103/PhysRevB.58.3586
PG 4
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800030
ER
PT J
AU Wehner, MU
Chemla, DS
Wegener, M
AF Wehner, MU
Chemla, DS
Wegener, M
TI Electron-LO-phonon quantum kinetics in semiconductor quantum wells
SO PHYSICAL REVIEW B
LA English
DT Article
ID GAAS; INTERFERENCE; BEATS
AB Quantum correlations between electrons and phonons are demonstrated in two-dimensional semiconductors. The resulting phonon oscillation exhibits characteristic differences with respect to the three-dimensional parent system. We show how these correlations can unambiguously be distinguished from nonequilibrium coherent phonons. Furthermore, coherent control allows separation of the phonon oscillation from another oscillation observed here, specific to two-dimensional systems, which is due to the interference of two electron-electron scattering channels associated with different quantum-well subbands.
C1 Univ Karlsruhe, Inst Angew Phys, D-76128 Karlsruhe, Germany.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Wehner, MU (reprint author), Univ Karlsruhe, Inst Angew Phys, Kaiserstr 12, D-76128 Karlsruhe, Germany.
RI Wegener, Martin/S-5456-2016
NR 12
TC 27
Z9 27
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 3590
EP 3593
DI 10.1103/PhysRevB.58.3590
PG 4
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800031
ER
PT J
AU Matsuura, AY
Watanabe, K
Kim, C
Doniach, S
Shen, ZX
Thio, T
Bennett, JW
AF Matsuura, AY
Watanabe, K
Kim, C
Doniach, S
Shen, ZX
Thio, T
Bennett, JW
TI Metal-insulator transition in NiS2-xSex and the local impurity
self-consistent approximation model
SO PHYSICAL REVIEW B
LA English
DT Article
ID INFINITE DIMENSIONS; MAGNETIC-PROPERTIES; SPECTRAL-FUNCTION;
PYRITE-STRUCTURE; NIS2; SUPERCONDUCTIVITY; SYSTEMS; PHASE
AB Angle-resolved photoemission spectroscopy (ARPES) measurements on NiS2 - xSex single crystals show the evolution of a narrow band near the Fermi level, which develops in the vicinity of the correlation-driven metal-insulator transition. To model the metal-insulator transition, we use a two-band Hubbard model, which has been studied extensively to describe transition-metal compounds, and use a dynamical mean-held-theory approach. The ARPES data are in striking qualitative agreement with the predictions of the model. Comparison of our data to the calculations suggests a possible mechanism for the metal-insulator transition with Se substitution in which both charge-transfer and hole-doping effects an present.
C1 Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA.
NEC Res Inst, Princeton, NJ 08540 USA.
RP Matsuura, AY (reprint author), Univ Lund, Inst Phys, Dept Synchrotron Radiat Res, Box 118, S-22100 Lund, Sweden.
NR 20
TC 35
Z9 35
U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 3690
EP 3696
DI 10.1103/PhysRevB.58.3690
PG 7
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800047
ER
PT J
AU Mandrus, D
Keppens, V
Sales, BC
Sarrao, JL
AF Mandrus, D
Keppens, V
Sales, BC
Sarrao, JL
TI Unusual transport and large diamagnetism in the intermetallic
semiconductor RuAl2
SO PHYSICAL REVIEW B
LA English
DT Article
ID FILLED SKUTTERUDITE ANTIMONIDES; THERMOELECTRIC-MATERIALS;
THERMAL-CONDUCTIVITY; AL2RU; CRYSTALS
AB We report measurements of the resistivity, thermopower, thermal conductivity, Hall coefficient, and magnetic susceptibility of RuAl2 over a wide temperature range. Room-temperature sound velocity measurements are also reported. We find that at low temperature RuAl2 behaves as a low carrier-density semimetal. As the temperature is raised, excitations across a 0.6-eV pseudogap dominate the transport, and RuAl2 behaves effectively as a semiconductor. The diamagnetic susceptibility of RuAl2 is anomalously large, and has an unusual temperature dependence that can be attributed to a Pauli term that reflects underlying structure in the density of states. We also suggest that the large diamagnetic response is a universal feature of hybridization gap semiconductors. The potential of RuAl2 for thermoelectric applications is evaluated. We find that even if the lattice component of the thermal conductivity could be reduced to its minimum value, the electrical properties of RuAl2 are not good enough to make it an attractive thermoelectic material.
C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
Natl High Magnet Field Lab, Tallahassee, FL 32306 USA.
Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Mandrus, D (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA.
RI Mandrus, David/H-3090-2014
NR 22
TC 28
Z9 28
U1 2
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 3712
EP 3716
DI 10.1103/PhysRevB.58.3712
PG 5
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800050
ER
PT J
AU van Veenendaal, M
Benoist, R
AF van Veenendaal, M
Benoist, R
TI X-ray absorption and resonant inelastic x-ray scattering in the rare
earths
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETIC CIRCULAR-DICHROISM; GROUND-STATE PROPERTIES; RAMAN-SCATTERING;
BRANCHING RATIOS; L(III) EDGE; SPECTRA; POLARIZATION; CORE;
DISTRIBUTIONS; PHOTOEMISSION
AB This paper makes a comparison between x-ray absorption (XAS) and resonant inelastic x-ray scattering (RIXS) in the rare earths. Atomic calculations are given for 2p-->4f. The radiative decay of the XAS final states is described for the situations where the core hole created in the absorption process is filled by a valence electron or by an electron from st shallower core level. RIXS spectra 4f(n)--><(3d)under bar>4f(n+1)-->4f(n) integrated over the outgoing photon energy (fluorescence yield) are compared with 3d-->4f XAS. Sum rules related to XAS and RIXS and their applicability are discussed.
C1 European Synchrotron Radiat Facil, F-38043 Grenoble, France.
RP van Veenendaal, M (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 41
TC 14
Z9 14
U1 1
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 3741
EP 3749
DI 10.1103/PhysRevB.58.3741
PG 9
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800054
ER
PT J
AU Alekseev, KN
Berman, GP
Campbell, DK
AF Alekseev, KN
Berman, GP
Campbell, DK
TI Strange attractor in resonant tunneling
SO PHYSICAL REVIEW B
LA English
DT Article
ID INTRINSIC BISTABILITY; RING CAVITY; OPTICAL TURBULENCE; TRANSMITTED
LIGHT; QUANTUM-WELLS; OSCILLATIONS; BARRIERS; SYSTEM; STATE; TIME
AB We consider the process of resonant electron tunneling through a double-barrier potential, taking into account nonlinear dynamical effects generated by charge accumulation in the interbarrier space. We use the perturbation approach of Davydov and Ermakov, which was developed for investigating intrinsic bistability in resonant tunneling. For incoming electron flow, which is modulated slowly in time, we show that the resulting nonlinear dynamics can become chaotic, with the chaos described (because of the open nature of the system) by a strange attractor. We determine the conditions for the existence of this strange attractor and estimate characteristic experimental parameters for its observation.
C1 LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia.
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA.
Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
RP Alekseev, KN (reprint author), LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia.
NR 38
TC 3
Z9 3
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 3954
EP 3962
DI 10.1103/PhysRevB.58.3954
PG 9
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800074
ER
PT J
AU Yi, YS
Bishop, AR
AF Yi, YS
Bishop, AR
TI Aharonov-Anandan effect induced by spin-orbit interaction and
charge-density waves in mesoscopic rings
SO PHYSICAL REVIEW B
LA English
DT Article
ID PERSISTENT CURRENTS; BERRY PHASE; QUANTUM TRANSPORT; MAGNETIC-FLUX;
SYSTEMS; SCATTERING
AB We study the spin-dependent geometric phase effect in mesoscopic rings of charge-density-wave (CDW) materials. When electron spin is explicitly taken into account, we show that the spin-dependent Aharonov-Casher phase can have pronounced frustration effects on such CDW materials with appropriate electron filling. We show that this frustration has observable consequences for transport experiments. We identify a phase transition from a Peierls insulator to metal, which is induced by spin-dependent phase interference effects. Mesoscopic CDW materials and spin-dependent geometric phase effects, and their interplay, are becoming attractive opportunities for exploitation with the rapid development of modern fabrication technology.
C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Yi, YS (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
NR 30
TC 9
Z9 9
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 7
BP 4077
EP 4081
DI 10.1103/PhysRevB.58.4077
PG 5
WC Physics, Condensed Matter
SC Physics
GA 114PA
UT WOS:000075616800087
ER
PT J
AU McMahan, AK
AF McMahan, AK
TI Two-center s-f Slater-Koster integrals
SO PHYSICAL REVIEW B
LA English
DT Article
ID TABLES; ELECTRONS
AB Two-center Slater-Koster integrals may be expressed as linear combinations of simpler polynomials that can either be factored or are of lower power in the direction cosines. This structure facilitates their tabulation and manipulation, as illustrated here by providing the complete set of s-f two-center integrals in this manner, as well as values of their m,m'-matrix dot products. The latter provide useful constraints for testing analytic or coded forms of these functions. These dot products also define a transformed two-center expansion which provides more convenient treatment of crystal-field terms.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP McMahan, AK (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 14
TC 3
Z9 3
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP 4293
EP 4303
DI 10.1103/PhysRevB.58.4293
PG 11
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500026
ER
PT J
AU Delaney, P
Kralik, B
Louie, SG
AF Delaney, P
Kralik, B
Louie, SG
TI Compton profiles of Si: Pseudopotential calculation and reconstruction
effects
SO PHYSICAL REVIEW B
LA English
DT Article
ID FERMI-SURFACE; SCATTERING; DENSITY
AB Using an ab initio pseudopotential calculation, we compute Compton profiles of silicon along the (100), (110), and (111) directions, and then reconstruct the pseudo-wave-functions to regain the oscillatory behavior of the all-electron valence wave functions near the atomic cores. We study the effect that this reconstruction has on the Compton profiles and their anisotropies. We find a decrease in the magnitude of the profiles at small wave vectors and in their anisotropies. These changes bring the theoretical predictions closer to experimental results.
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
NR 18
TC 5
Z9 5
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP 4320
EP 4324
DI 10.1103/PhysRevB.58.4320
PG 5
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500028
ER
PT J
AU Delin, A
Fast, L
Johansson, B
Eriksson, O
Wills, JM
AF Delin, A
Fast, L
Johansson, B
Eriksson, O
Wills, JM
TI Cohesive properties of the lanthanides: Effect of generalized gradient
corrections and crystal structure
SO PHYSICAL REVIEW B
LA English
DT Article
ID RARE-EARTH-METALS; DENSITY-FUNCTIONAL THEORY; ALPHA-GAMMA-TRANSITION;
KONDO VOLUME-COLLAPSE; PHASE-DIAGRAM; GAMMA->ALPHA TRANSITION;
ELECTRONIC-PROPERTIES; BRILLOUIN-ZONE; SPECIAL POINTS; APPROXIMATION
AB Two different approximations to the density functional, the local (spin) density approximation (LDA) in the Hedin-Lundqvist parametrization and the Perdew-Wang generalized gradient approximation (GGA), are compared using the lanthanide series plus barium as testing ground. Our total-energy calculations are parameter-free and all-electron, with a full-potential linear muffin-tin orbital basis set. The equilibrium volumes, bulk moduli, and generalized cohesive energies are calculated, assuming both the fee and hcp crystal structures, and compared to experimental data. We find that GGA corrects most of the overbonding tendency of LDA for these elements. Our results also suggest that the standard model of the lanthanides, according to which the 4f shell can be viewed as chemically inert, is not fully appropriate for the early lanthanides (not including La), and that the trend in the bulk modulus is much less smooth than previously thought.
C1 Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden.
Los Alamos Natl Lab, Ctr Mat Sci & Theoret Div, Los Alamos, NM 87544 USA.
RP Delin, A (reprint author), Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, POB 530, S-75121 Uppsala, Sweden.
RI Eriksson, Olle/E-3265-2014; Delin, Anna/P-2100-2014
OI Eriksson, Olle/0000-0001-5111-1374; Delin, Anna/0000-0001-7788-6127
NR 44
TC 48
Z9 48
U1 0
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP 4345
EP 4351
DI 10.1103/PhysRevB.58.4345
PG 7
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500032
ER
PT J
AU Kang, JS
Olson, CG
Inada, Y
Onuki, Y
Kwon, SK
Min, BI
AF Kang, JS
Olson, CG
Inada, Y
Onuki, Y
Kwon, SK
Min, BI
TI Valence-band photoemission study of single crystalline CeNiSn
SO PHYSICAL REVIEW B
LA English
DT Article
ID KONDO SEMICONDUCTOR CENISN; ANTIFERROMAGNETIC CORRELATIONS; RESONANT
PHOTOEMISSION; ELECTRONIC-STRUCTURE; NEUTRON-SCATTERING; HEAVY FERMIONS;
GAP FORMATION; ENERGY-GAP; SPECTRA; HYBRIDIZATION
AB The electronic structure of single crystalline CeNiSn has been investigated using photoemission spectroscopy. The extracted Ce 4f spectrum exhibits three peak structures; the typical Fermi level and 2 eV peaks, and another between them, similar to 0.9 eV below the Fermi level E-F. The near-E-F peak reflects a substantial Ce 4f-Sn sp hybridization, whereas the 0.9 eV peak arises from the Ce 4f-Ni 3d and Ce 5d-Ni 3d hybridization. A Ni 3d satellite feature is observed about 6 eV below the Ni 3d main band, indicating a strong Ni 3d Coulomb correlation in CeNiSn. The high-resolution photoemission study indicates a finite metallic density of states at EF implying a semimetallic ground state. The electronic states near EF are found to have mixed character from the Sn sp, Ce 5d, Ce 4f, and Ni 3d electrons. Constant-initial-state and constant-final-state yield spectra across the 4d-->4f threshold indicate the Ce valence to be close to 3+.
C1 Catholic Univ Korea, Dept Phys, Puchon 422743, South Korea.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 560, Japan.
Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
RP Kang, JS (reprint author), Catholic Univ Korea, Dept Phys, Puchon 422743, South Korea.
NR 42
TC 9
Z9 9
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP 4426
EP 4431
DI 10.1103/PhysRevB.58.4426
PG 6
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500041
ER
PT J
AU Gilliland, GD
Petrovic, MS
Hjalmarson, HP
Wolford, DJ
Northrop, GA
Kuech, TF
Smith, LM
Bradley, JA
AF Gilliland, GD
Petrovic, MS
Hjalmarson, HP
Wolford, DJ
Northrop, GA
Kuech, TF
Smith, LM
Bradley, JA
TI Time-dependent heterointerfacial band bending and quasi-two-dimensionl
excitonic transport in GaAs structures
SO PHYSICAL REVIEW B
LA English
DT Article
ID QUANTUM-WELL STRUCTURES; DOUBLE HETEROSTRUCTURES; ELECTRON-MOBILITY;
QUALITY; INTERFACES; DIFFUSION; PARAEXCITONS; SCATTERING; STATES; DRIFT
AB Using a time-resolved photoluminescence imaging technique with high spectral, temporal, and spatial resolution, we have directly measured the time- and carrier-density-dependent heterointerfacial band bending in GaAs/AlxGa1-xAs structures, and its influence on quasi-two-dimensional exciton transport. We find the spatially nonuniform band bending induced by laser excitation decays to its static, uniform band bending in similar to 20 ns. Further, we find that the observed transport is initially "driven" by a force originating from the spatially nonuniform band bending arising from photoexcited carrier screening of the built-in heterointerface field and is of very high mobility. This transport becomes diffusive asymptotically in time.
C1 Emory Univ, Dept Phys, Atlanta, GA 30322 USA.
IBM Corp, Div Res, TJ Watson Res Ctr, Yorktown Heights, NY 10598 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
Iowa State Univ, Dept Phys, Ames, IA 50010 USA.
IBM Corp, Div Res, TJ Watson Res Ctr, Yorktown Heights, NY 10598 USA.
Univ Wisconsin, Dept Chem Engn, Madison, WI 53706 USA.
Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA.
RP Gilliland, GD (reprint author), Emory Univ, Dept Phys, Atlanta, GA 30322 USA.
RI Smith, Leigh/A-1071-2009
OI Smith, Leigh/0000-0002-3950-1713
NR 25
TC 3
Z9 3
U1 1
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP 4728
EP 4732
DI 10.1103/PhysRevB.58.4728
PG 5
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500079
ER
PT J
AU Suo, ZG
Zhang, ZY
AF Suo, ZG
Zhang, ZY
TI Epitaxial films stabilized by long-range forces
SO PHYSICAL REVIEW B
LA English
DT Article
ID QUANTUM-WELL STATES; THIN METAL-FILMS; STRAIN RELIEF; GE FILMS; GROWTH;
SIZE; SURFACE; AG; INSTABILITY; NUCLEATION
AB It has been widely accepted that the stability of an epitaxial film on a substrate of a different material is determined primarily by the competition between surface tension and stress. Here we propose that certain thermodynamic driving forces of different physical origins, acting over longer ranges than atomic length, can be strong enough to compete with elasticity. Specifically, we show that the ubiquitous dispersion force can compete effectively with the stress in thin solid films. We further show that the confined electrons within a metal film can mediate a surprisingly long-ranged force capable of stabilizing metal films of many atomic layers, leading to the existence of a thickness window within which smooth metal films can be formed.
C1 Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA.
Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Suo, ZG (reprint author), Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
EM Suo@Princeton.EDU; ZhangZ@ORNL.GOV
RI Suo, Zhigang/B-1067-2008
OI Suo, Zhigang/0000-0002-4068-4844
NR 50
TC 107
Z9 110
U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP 5116
EP 5120
DI 10.1103/PhysRevB.58.5116
PG 5
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500126
ER
PT J
AU Cheong, HM
Fluegel, B
Hanna, MC
Mascarenhas, A
AF Cheong, HM
Fluegel, B
Hanna, MC
Mascarenhas, A
TI Photoluminescence up-conversion in GaAs/AlxGa1-xAs heterostructures
SO PHYSICAL REVIEW B
LA English
DT Article
ID QUANTUM-WELL STRUCTURES; BAND ALIGNMENT; INTERFACE; STOKES;
SEMICONDUCTORS; HETEROJUNCTION; SUPERLATTICES; LUMINESCENCE; CARRIERS;
GAINP
AB We propose GaAs/AlxGa1-xAs heterostructures as a model system to study the phenomenon of photoluminescence (PL) up-conversion and demonstrate low-temperature up-converted PL (UPL) in these heterostructures. We find that a mechanism to prevent up-converted carriers in the AlxGa1-xAs layer from thermalizing back to the GaAs layer is essential for efficient UPL. We also find that neither a type-II band alignment nor existence of long-lived intermediate states is an essential requirement of UPL. The results of time-resolved UPL measurements are interpreted within the current models.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Cheong, HM (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
RI Cheong, Hyeonsik/D-7424-2012
OI Cheong, Hyeonsik/0000-0002-2347-4044
NR 22
TC 18
Z9 18
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP R4254
EP R4257
DI 10.1103/PhysRevB.58.R4254
PG 4
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500016
ER
PT J
AU Cote, M
Cohen, ML
Chadi, DJ
AF Cote, M
Cohen, ML
Chadi, DJ
TI Theoretical study of the structural and electronic properties of GaSe
nanotubes
SO PHYSICAL REVIEW B
LA English
DT Article
ID CARBON
AB We predict the formation of GaSe nanotubes from an energetic argument which employs pseudopotential density functional theory methods. The strain energy of GaSe nanotubes is found to be comparable to existing carbon nanotubes. Based on this energetic comparison, we expect GaSe nanotubes with diameters of 40-48 Angstrom to form. The energy gap of these nanotubes is predicted to decrease from the hulk value as the nanotubes get smaller. These calculations demonstrate that the synthesis of GaSe tubes would yield interesting new materials which would allow further studies of the properties of nanotubes and expand their applications.
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
NEC Res Inst, Princeton, NJ 08540 USA.
RP Cote, M (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Cote, Michel/H-3942-2012
OI Cote, Michel/0000-0001-9046-9491
NR 11
TC 54
Z9 54
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP R4277
EP R4280
DI 10.1103/PhysRevB.58.R4277
PG 4
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500022
ER
PT J
AU Leon, R
Fafard, S
Piva, PG
Ruvimov, S
Liliental-Weber, Z
AF Leon, R
Fafard, S
Piva, PG
Ruvimov, S
Liliental-Weber, Z
TI Tunable intersublevel transitions in self-forming semiconductor quantum
dots
SO PHYSICAL REVIEW B
LA English
DT Article
ID TIME-RESOLVED PHOTOLUMINESCENCE; RADIATIVE RECOMBINATION; VISIBLE
LUMINESCENCE; PHONON BOTTLENECK; BARRIER HEIGHT; BOX SYSTEMS;
RELAXATION; ENSEMBLES; WELLS
AB Interfacial compositional disordering in In0.6Ga0.4As/GaAs quantum dots has been used to tune their intersublevel energy spacings (Delta E[(i+1-i])). Interdiffusion blueshifted all levels while lowering values for Delta E[(i+1-i]). Rate equation simulations of photoluminescence (PL) spectra estimated relaxation lifetime ratios for intersublevel transitions. A slight trend towards increasing thermalization rates at values Delta E[(i+1-i]) similar to LO phonon energies was found. However, PL measurements showed strong emission from excited states for all Delta E[(i+1-i]) values, which ranged from 53 to 25 meV.
C1 CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Leon, R (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA.
RI Liliental-Weber, Zuzanna/H-8006-2012
NR 25
TC 73
Z9 73
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD AUG 15
PY 1998
VL 58
IS 8
BP R4262
EP R4265
DI 10.1103/PhysRevB.58.R4262
PG 4
WC Physics, Condensed Matter
SC Physics
GA 117GE
UT WOS:000075772500018
ER
PT J
AU Copeland, EJ
Grivell, IJ
Kolb, EW
Liddle, AR
AF Copeland, EJ
Grivell, IJ
Kolb, EW
Liddle, AR
TI On the reliability of inflation potential reconstruction
SO PHYSICAL REVIEW D
LA English
DT Article
ID PERTURBATIONS
AB If primordial scalar and tensor perturbation spectra can be inferred from observations of the cosmic background radiation and large-scale structure, then one might hope to reconstruct a unique single-field inflaton potential capable of generating the observed spectra. In this paper we examine conditions under which such a potential can be reliably reconstructed. For it to be possible at all, the spectra must be well fit by a Taylor series expansion. A complete reconstruction requires a statistically significant tensor mode to be measured in the microwave background. We find that the observational uncertainties dominate the theoretical error from use of the slow-roll approximation, and conclude that the reconstruction procedure will never insidiously lead to an irrelevant potential.
C1 Univ Sussex, Ctr Theoret Phys, Brighton BN1 9QH, E Sussex, England.
Univ Sussex, Ctr Astron, Brighton BN1 9QJ, E Sussex, England.
NASA, Fermilab Astrophys Ctr, Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
RP Copeland, EJ (reprint author), Univ Sussex, Ctr Theoret Phys, Brighton BN1 9QH, E Sussex, England.
NR 17
TC 21
Z9 21
U1 0
U2 0
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2821
J9 PHYS REV D
JI Phys. Rev. D
PD AUG 15
PY 1998
VL 58
IS 4
AR 043002
DI 10.1103/PhysRevD.58.043002
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 112YC
UT WOS:000075521600007
ER
PT J
AU Csaki, C
Skiba, W
AF Csaki, C
Skiba, W
TI Classification of the N=1 Seiberg-Witten theories
SO PHYSICAL REVIEW D
LA English
DT Article
ID YANG-MILLS THEORY; SUPERSYMMETRIC GAUGE-THEORIES; MODULI SPACE; EXACT
SUPERPOTENTIALS; CONFINING PHASE; COULOMB PHASE; CONFINEMENT; DUALITY;
VACUA; MONODROMIES
AB We present a systematic study of N = 1 supersymmetric gauge theories which are in the Coulomb phase. We show how to find all such theories based on a simple gauge group and no tree-level superpotential. We find the low-energy solution for the new theories in terms of a hyperelliptic Seiberg-Witten curve. This work completes the study of all N = 1 supersymmetric gauge theories where the Dynkin index of the matter fields equals the index of the adjoint (mu = G) and, consequently, all theories for which mu < G.
C1 Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
RP Csaki, C (reprint author), Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
NR 33
TC 0
Z9 0
U1 0
U2 0
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2821
J9 PHYS REV D
JI Phys. Rev. D
PD AUG 15
PY 1998
VL 58
IS 4
AR 045008
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 112YC
UT WOS:000075521600048
ER
PT J
AU Lee, S
AF Lee, S
TI Propagation of extragalactic high energy cosmic and gamma rays
SO PHYSICAL REVIEW D
LA English
DT Article
ID INTERGALACTIC INFRARED RADIATION; MICROWAVE BACKGROUND-RADIATION;
UNIFICATION SCALE PHYSICS; TOPOLOGICAL DEFECTS; COSMOLOGICAL DISTANCES;
RADIO GALAXIES; SPECTRUM; ORIGIN; STRINGS; ABSORPTION
AB The observation of air showers from elementary particles with energies exceeding 10(20) eV poses a puzzle to the physics and astrophysics of cosmic rays which is still unresolved. Explaining the origin and nature of these particles is a challenge. In order to constrain production mechanisms and sites, one has to account for the processing of particle spectra by interactions with radiation backgrounds and magnetic fields on the way to the observer. In this paper, I report on an extensive study on the propagation of extragalactic nucleons, gamma-rays, and electrons in the energy range between 10(8) eV and 10(25) eV. We have devised an efficient numerical method to solve the transport equations for cosmic ray spectral evolution. The universal radiation background spectrum in the energy range between similar or equal to 10(-9) eV and similar or equal to 10 eV is considered in the numerical code, including the diffuse radio background, the cosmic microwave background, and the infrared-optical background, as well as a possible extragalactic magnetic field. We apply the code to compute the particle spectra predicted by several models of ultrahigh energy cosmic ray origin. A comparison with the observed fluxes, especially the diffuse gamma-ray background in several energy ranges, allows one to constrain certain classes of models.
C1 Univ Chicago, Enrico Fermi Inst, Dept Phys, Chicago, IL 60637 USA.
NASA, Fermilab Astrophys Ctr, Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Univ Chicago, Enrico Fermi Inst, Dept Phys, Chicago, IL 60637 USA.
NR 95
TC 75
Z9 75
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD AUG 15
PY 1998
VL 58
IS 4
AR 043004
DI 10.1103/PhysRevD.58.043004
PG 24
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 112YC
UT WOS:000075521600009
ER
PT J
AU Mathews, GJ
Marronetti, P
Wilson, JR
AF Mathews, GJ
Marronetti, P
Wilson, JR
TI Relativistic hydrodynamics in close binary systems: Analysis of
neutron-star collapse
SO PHYSICAL REVIEW D
LA English
DT Article
ID POST-NEWTONIAN APPROXIMATION; STABLE CIRCULAR ORBIT; 2 BLACK-HOLES;
GENERAL-RELATIVITY; CENTRAL DENSITY; DARWIN PROBLEM; COLLISION; MODELS
AB We discuss the underlying relativistic physics that causes neutron stars to compress and collapse in close binary systems as has been recently observed in numerical(3 + 1)-dimensional general relativistic hydrodynamic simulations. We show that compression is driven by velocity-dependent relativistic hydrodynamic terms which increase the self-gravity of the stars. They also produce fluid motion with respect to the corotating frame of the binary. We present numerical and analytic results that confirm that such terms are insignificant for uniform translation or when the hydrodynamics are constrained to rigid corotation. However, when the hydrodynamics are unconstrained, the neutron star fluid relaxes to a compressed nonsynchronized state of almost no net intrinsic spin with respect to a distant observer. We also show that tidal decompression effects are much smaller than the velocity-dependent compression terms for stars with a realistic compaction ratio. We discuss why several recent attempts to analyze this effect with constrained hydrodynamics or an analysis of tidal forces do not observe compression. We argue that an independent test of this effect must include unconstrained relativistic hydrodynamics to a sufficiently high order so that all relevant velocity-dependent terms and their possible cancellations are included.
C1 Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Mathews, GJ (reprint author), Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
NR 42
TC 42
Z9 42
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD AUG 15
PY 1998
VL 58
IS 4
AR 043003
DI 10.1103/PhysRevD.58.043003
PG 13
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 112YC
UT WOS:000075521600008
ER
PT J
AU Tornkvist, O
AF Tornkvist, O
TI Electroweak origin of cosmological magnetic fields
SO PHYSICAL REVIEW D
LA English
DT Article
ID EARLY UNIVERSE; BUBBLE COLLISIONS; PHASE-TRANSITIONS;
ELECTRICAL-CONDUCTIVITY; W-CONDENSATION; STRINGS; GENERATION; STABILITY;
QCD; INFLATION
AB Magnetic fields may have been generated in the electroweak phase transition through spontaneous symmetry breaking or through the subsequent dynamical evolution of semiclassical field configurations. Here I demonstrate explicitly how magnetic fields emerge spontaneously in the phase transition also when no gradients of the Higgs field are present. Using a simple model, I show that no magnetic fields an generated, at least initially, from classical two-bubble collisions in a first-order phase transition. An improved gauge-invariant definition of the electromagnetic field is advocated which is more appropriate in the sense that it never allows electrically neutral fields to serve as sources for the electromagnetic field. In particular, semiclassical configurations of the Z field alone do not generate magnetic fields. The possible generation of magnetic fields in the decay of unstable Z strings is discussed.
C1 NASA, Fermilab Astrophys Ctr, Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Univ Cambridge, Dept Appl Math & Theoret Phys, Silver St, Cambridge CB3 9EW, England.
EM O.Tornkvist@damtp.cam.ac.uk
NR 55
TC 16
Z9 16
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD AUG 15
PY 1998
VL 58
IS 4
AR 043501
DI 10.1103/PhysRevD.58.043501
PG 12
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 112YC
UT WOS:000075521600011
ER
PT J
AU Tars, M
Ellervee, A
Wasielewski, MR
Freiberg, A
AF Tars, M
Ellervee, A
Wasielewski, MR
Freiberg, A
TI Biomolecular electron transfer under high hydrostatic pressure
SO SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
LA English
DT Article
DE high pressure; electron transfer; porphyrins; donor-acceptor complexes;
picosecond time-reserved fluorescence
ID RHODOBACTER-SPHAEROIDES R-26; BACTERIAL REACTION CENTERS; CHARGE
SEPARATION; RHODOPSEUDOMONAS-VIRIDIS; PHOTOSYNTHESIS; LUMINESCENCE;
DEPENDENCE; RELAXATION; DYNAMICS; STEP
AB The dependence of the photoinduced electron transfer rate on hydrostatic pressure up to 8 kbar was studied at 295 K in a bridged Zn-porphyrin donor and pyromellitimide acceptor supermolecule dissolved in toluene. A picosecond fluorescence emission kinetics of the donor, limited by the electron transfer rate: was detected by using synchroscan streak camera. The experiment was complemented with model calculations based on modified classical and semi-classical nonadiabatic electron transfer theory. A peculiar asymmetric inverted parabola-like dependence of the electron transfer rate on pressure was observed. The dependence was successfully reproduced by nonadiabatic theory in the high-temperature limit assuming that the reorganisation free energy or both the reorganisation free energy and the reaction driving force (linearly) changed with pressure. The reaction driving force dependence on pressure alone failed to explain the asymmetry, suggesting that the electron transfer was accompanied with vibration frequency changes. It was inferred that the effective frequency in the product state should be larger than in the reactant state. The usage of the nonadiabatic theory is well justified due to the fulfilment of the inequalities V much less than k(B)T and V much less than[tau(L)](-1) (V is the electronic coupling matrix element, [tau(L)](-1) is the solvent relaxation rate). The influence of the donor-acceptor distance reduction under compression on the electron transfer rate was found to be minor, (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Estonian Acad Sci, Inst Phys, EE-2400 Tartu, Estonia.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
RP Freiberg, A (reprint author), Estonian Acad Sci, Inst Phys, Riia 142, EE-2400 Tartu, Estonia.
RI Freiberg, Arvi/A-9283-2011
NR 32
TC 3
Z9 4
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1386-1425
J9 SPECTROCHIM ACTA A
JI Spectroc. Acta Pt. A-Molec. Biomolec. Spectr.
PD AUG 15
PY 1998
VL 54
IS 9
BP 1177
EP 1189
DI 10.1016/S1386-1425(98)00068-7
PG 13
WC Spectroscopy
SC Spectroscopy
GA 105ER
UT WOS:000075060200006
ER
PT J
AU DiMagno, TJ
Laible, PD
Reddy, NR
Small, GJ
Norris, JR
Schiffer, M
Hanson, DK
AF DiMagno, TJ
Laible, PD
Reddy, NR
Small, GJ
Norris, JR
Schiffer, M
Hanson, DK
TI Protein-chromophore interactions: spectral shifts report the
consequences of mutations in the bacterial photosynthetic reaction
center
SO SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
LA English
DT Article
DE electron transfer; site-specific mutagenesis; transient absorption
spectroscopy; bacteriochlorophyll a; bacteriopheophytin a
ID RHODOBACTER-SPHAEROIDES R26; ELECTRON-TRANSFER DYNAMICS; PRIMARY CHARGE
SEPARATION; SITE-SPECIFIC MUTAGENESIS; HOLE-BURNED SPECTRA;
RHODOPSEUDOMONAS-CAPSULATA; BACTERIOCHLOROPHYLL-A; BACTERIOPHEOPHYTIN-A;
TYROSINE M210; PRIMARY DONOR
AB Features of the low temperature absorption spectra of reaction centers from a large family of Rhodobacter capsulatus strains carrying site-specific mutations at the M208Tyr and L181Phe positions are presented. Through systematic analysis of the observed electronic transitions (with accompanying vibronic bands): the primary effects of many of the mutations have been identified and explained in terms of the reaction center structure. Some of the observed shifts are comparable to those that have been seen in other systems as a result of formation of hydrogen bonds or hexacoordination of the central Mg atom in bacteriochlorophyll species. Shifts of the Q(y) and Q(x) bacteriochlorophyll bands are also seen as a result of distant mutations near the quinones that change the charge distribution of the reaction center. We include kinetic data which show that the spectral and kinetic characteristics of different cofactors can be modulated depending on the particular amino acid that is substituted at the M208 site. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Argonne Natl Lab, Ctr Mech Biol & Biotechnol, Argonne, IL 60439 USA.
Univ Chicago, Dept Chem, Chicago, IL 60637 USA.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Hanson, DK (reprint author), Argonne Natl Lab, Ctr Mech Biol & Biotechnol, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 71
TC 15
Z9 15
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1386-1425
J9 SPECTROCHIM ACTA A
JI Spectroc. Acta Pt. A-Molec. Biomolec. Spectr.
PD AUG 15
PY 1998
VL 54
IS 9
BP 1247
EP 1267
DI 10.1016/S1386-1425(98)00074-2
PG 21
WC Spectroscopy
SC Spectroscopy
GA 105ER
UT WOS:000075060200012
ER
PT J
AU Ratsep, M
Wu, HM
Hayes, JM
Small, GJ
AF Ratsep, M
Wu, HM
Hayes, JM
Small, GJ
TI Stark hole-burning spectroscopy of a photosynthetic complex: LH2 of
purple bacteria
SO SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
LA English
DT Article
DE hole-burning; Stark; light harvesting 2 complex; dipole moment
ID BACTERIOCHLOROPHYLL-A-PROTEIN; LIGHT-HARVESTING COMPLEXES; DIPOLE-MOMENT
DIFFERENCES; RHODOBACTER-SPHAEROIDES; ANTENNA COMPLEX; ENERGY-TRANSFER;
RHODOPSEUDOMONAS-ACIDOPHILA; REACTION CENTERS;
RHODOSPIRILLUM-MOLISCHIANUM; PROSTHECOCHLORIS-AESTUARII
AB Results from the first Stark hole-burning spectroscopic studies of photosynthetic complexes are reported. External electric field effects were determined as a function of laser burn frequency and polarization for the B800 band and the B870 band of Rhodobacter sphaeroides, where B870 is the lowest exciton level of the strongly coupled bacteriochlorophyll a molecules of the B850 ring. For either parallel or perpendicular polarization of the burn laser relative to the external Stark field, only broadening of the zero-phonon holes which is linear in field strength was observed. Near the center of the B870 and B800 bands, f(Delta mu(parallel to), Delta mu(perpendicular to)) = (1.1, 1.4) and (1.1, 0.8) Debye, respectively, where f is the local field correction factor. However, a dependence of the Delta mu-values on location of the hole within the inhomogeneously broadened absorption bands is observed. For B870 they increase by 10-20% from the blue to red edge while for B800 an opposite trend is observed. Results for B870 of Rhodopseudomonas acidophila and Rhodospirillum molischianum are similar. A detailed discussion of the results and a comparison of them with those from classical Stark modulation spectroscopic studies of the entire B800 and B850 absorption bands are given. It is concluded for the B850 ring that mixing of charge transfer states with the Q(y)-exciton levels is of minor importance. The hole burning data, together with consideration of the C-n-symmetry and the effects of energy disorder from structural heterogeneity, suggest that localization effects from energy disorder are probably important for understanding the effects of external electric field on the B850 band which is comprised of several components. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Iowa State Univ, Dept Chem, Ames Lab, Ames, IA 50011 USA.
RP Small, GJ (reprint author), Iowa State Univ, Dept Chem, Ames Lab, Ames, IA 50011 USA.
NR 38
TC 16
Z9 16
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1386-1425
J9 SPECTROCHIM ACTA A
JI Spectroc. Acta Pt. A-Molec. Biomolec. Spectr.
PD AUG 15
PY 1998
VL 54
IS 9
BP 1279
EP 1289
DI 10.1016/S1386-1425(98)00076-6
PG 11
WC Spectroscopy
SC Spectroscopy
GA 105ER
UT WOS:000075060200014
ER
PT J
AU Pokkuluri, PR
Huang, DB
Raffen, R
Cai, X
Johnson, G
Stevens, PW
Stevens, FJ
Schiffer, M
AF Pokkuluri, PR
Huang, DB
Raffen, R
Cai, X
Johnson, G
Stevens, PW
Stevens, FJ
Schiffer, M
TI A domain flip as a result of a single amino-acid substitution
SO STRUCTURE WITH FOLDING & DESIGN
LA English
DT Article
DE antibody light chain; crystal structure; dimer interface; electrostatic
potential; quaternary interactions
ID CRYSTAL-STRUCTURE; ESCHERICHIA-COLI; SOLUBLE FORM; PROTEIN;
COMPLEMENTARITY; ASSOCIATION; RESOLUTION; INSIGHTS; DIMER
AB Background: The self-assembly properties of beta domains are important features of diverse classes of proteins that include cell-adhesion molecules, surface receptors and the immunoglobulin superfamily. Immunoglobulin light-chain variable domains are well suited to the study of structural factors that determine dimerization, including how residues at the interface influence the preferred dimer arrangement.
Results: Single-site mutants of light-chain variable domain Len, designated LenQ38E and LenK30T, formed 'flipped' dimers in which one domain was rotated by about 180 degrees compared with the native protein. The dimer in the native protein is similar to that found between Variable domains in Fab immunoglobulin fragments. When compared to the native dimer, more surface area is buried, and more hydrogen bonds and salt bridges are formed between the monomers in the flipped conformation.
Conclusions: Immunoglobulin light-chain variable domains can form a minimum of two distinct quaternary structures. Single-site mutations resulting from changes of one base, such as the exchange of Gln38 to Glu or Lys30 to Thr, change the 'conventional' dimer of protein Len to a flipped arrangement. Native Len is not found in the flipped-domain dimer conformation because it would have excess positive electrostatic potential at the dimer interface that is not compensated by other forces. Excess negative or positive electrostatic potential at the dimer interface can have a determining effect on the mode of dimerization.
C1 Argonne Natl Lab, Ctr Mechanist Biol & Biotechnol, Argonne, IL 60439 USA.
RP Schiffer, M (reprint author), Argonne Natl Lab, Ctr Mechanist Biol & Biotechnol, Argonne, IL 60439 USA.
EM schiffer@anlcmb.bim.anl.gov
FU NIDDK NIH HHS [DK43757]
NR 28
TC 14
Z9 14
U1 0
U2 1
PU CURRENT BIOLOGY LTD
PI LONDON
PA 34-42 CLEVELAND STREET, LONDON W1P 6LB, ENGLAND
SN 0969-2126
J9 STRUCT FOLD DES
JI Struct. Fold. Des.
PD AUG 15
PY 1998
VL 6
IS 8
BP 1067
EP 1073
DI 10.1016/S0969-2126(98)00107-5
PG 7
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 114FN
UT WOS:000075598600012
PM 9739086
ER
PT J
AU Larsen, FH
Jakobsen, HJ
Ellis, PD
Nielsen, NC
AF Larsen, FH
Jakobsen, HJ
Ellis, PD
Nielsen, NC
TI Molecular dynamics from H-2 quadrupolar Carr-Purcell-Meiboom-Gill
solid-state NMR spectroscopy
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID NUCLEAR-MAGNETIC-RESONANCE; ECHO NMR; ROTATING SOLIDS; LINE-SHAPES; MAS
NMR; EXCHANGE; RELAXATION; INVERSION; MOTION
AB The H-2 quadrupolar Carr-Purcell-Meiboom-Gill (QCPMG) NMR experiment is proposed as a convenient method to obtain detailed information about molecular dynamics in solids. Compared to the quadrupolar-echo (QE) experiment QCPMG offers two advantages. First, a sensitivity enhancement by about an order of magnitude is achieved by splitting the QE spectrum into spin-echo sidebands. Second, the lineshape of the individual sidebands provides detailed information about the molecular dynamics and increases the dynamic range by two orders of magnitude. The H-2 QCPMG method is demonstrated experimentally and numerically using the two-fold flip process in dimethyl sulfone, (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Aarhus Univ, Dept Chem, Instrument Ctr Solid State NMR Spect, DK-8000 Aarhus C, Denmark.
Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Nielsen, NC (reprint author), Aarhus Univ, Dept Chem, Instrument Ctr Solid State NMR Spect, DK-8000 Aarhus C, Denmark.
RI Larsen, Flemming/A-5255-2015
OI Larsen, Flemming/0000-0001-5180-6870
NR 35
TC 34
Z9 35
U1 6
U2 17
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2614
J9 CHEM PHYS LETT
JI Chem. Phys. Lett.
PD AUG 14
PY 1998
VL 292
IS 4-6
BP 467
EP 473
DI 10.1016/S0009-2614(98)00777-5
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 112EZ
UT WOS:000075482300015
ER
PT J
AU Aida, M
Yamataka, H
Dupuis, M
AF Aida, M
Yamataka, H
Dupuis, M
TI Ab initio molecular dynamics simulations on the hydrolysis of methyl
chloride with explicit consideration of three water molecules
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID SELF-CONSISTENT-FIELD; REACTION COORDINATE; PROTON-TRANSFER; CLUSTERS;
LI-8
AB Ab initio molecular dynamics (MD) simulations were performed on the hydrolysis of methyl chloride (CH3Cl) with explicit consideration of three water molecules to understand the dynamics of the reaction and the role of solvent molecules in S(N)2 reactions in solution. The simulations clearly showed the existence and dynamical characteristics of two nearly concerted proton transfers involving the attacking water molecule and the solvent water molecules on the way to formation of the products. Observation of these proton transfers points clearly to the need for an explicit quantum chemical treatment of at least a few solvent water molecules to describe methyl chloride solvolysis. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Natl Canc Ctr Res Inst, Div Biophys, Chuo Ku, Tokyo 1040045, Japan.
Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan.
Pacific NW Natl Lab, EMLS K190, Richland, WA 99352 USA.
RP Aida, M (reprint author), Natl Canc Ctr Res Inst, Div Biophys, Chuo Ku, 5-1-1 Tsukiji, Tokyo 1040045, Japan.
RI Aida, Misako/D-1670-2010
OI Aida, Misako/0000-0001-8788-1071
NR 23
TC 43
Z9 43
U1 1
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2614
J9 CHEM PHYS LETT
JI Chem. Phys. Lett.
PD AUG 14
PY 1998
VL 292
IS 4-6
BP 474
EP 480
DI 10.1016/S0009-2614(98)00706-4
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 112EZ
UT WOS:000075482300016
ER
PT J
AU Osborn, DL
Leahy, DJ
Kim, EH
de Beer, E
Neumark, DM
AF Osborn, DL
Leahy, DJ
Kim, EH
de Beer, E
Neumark, DM
TI Photoelectron spectroscopy of CH3O- and CD3O-
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID LASER-INDUCED FLUORESCENCE; VIBRONIC ANALYSIS; METHOXY; DYNAMICS; STATE;
JET; PHOTODETACHMENT; SPECTRUM
AB The photoelectron spectra of the methoxide anions, CH3O- and CD3O-, have been measured at 8-10 meV resolution. The spectra show resolved vibrational structure corresponding to vibrational levels of the CH3O/CD3O (X) over tilde(E-2) state. These vibrational progressions are assigned to the degenerate nu(5) and nu 6 modes of the methoxy radical; no progressions in the totally symmetric stretch modes are observed. In addition, we obtain refined electron affinities: EA(CH3O)= 1.568 +/- 0.005 and EA(CD3O) = 1.551 +/- 0.005 eV. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI Osborn, David/A-2627-2009; Neumark, Daniel/B-9551-2009
OI Neumark, Daniel/0000-0002-3762-9473
NR 22
TC 28
Z9 28
U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2614
J9 CHEM PHYS LETT
JI Chem. Phys. Lett.
PD AUG 14
PY 1998
VL 292
IS 4-6
BP 651
EP 655
DI 10.1016/S0009-2614(98)00717-9
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 112EZ
UT WOS:000075482300044
ER
PT J
AU Haake, M
Goodson, BM
Laws, DD
Brunner, E
Cyrier, MC
Havlin, RH
Pines, A
AF Haake, M
Goodson, BM
Laws, DD
Brunner, E
Cyrier, MC
Havlin, RH
Pines, A
TI NMR of supercritical laser-polarized xenon
SO CHEMICAL PHYSICS LETTERS
LA English
DT Article
ID CARBON-DIOXIDE; SURFACE NMR; ENHANCEMENT; PRESSURE; XE-129; RELAXATION;
RESOLUTION; FLUIDS; GAS
AB The feasibility of producing supercritical laser-polarized xenon for nuclear magnetic resonance (NMR) investigations was studied. Using a high-pressure capillary tube, a supercritical xenon sample (52 degrees C, 65 atm) was produced with a Xe-129 polarization approximately 140 times the equilibrium value. The polarization was observed to last for hundreds of seconds, in agreement with previous studies. These preliminary results suggest that supercritical laser-polarized xenon may be used as a polarizing solvent for numerous NMR applications. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94550 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
RP Pines, A (reprint author), Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94550 USA.
EM pines@chem.berkerley.edu
OI Goodson, Boyd/0000-0001-6079-5077
NR 35
TC 25
Z9 26
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0009-2614
J9 CHEM PHYS LETT
JI Chem. Phys. Lett.
PD AUG 14
PY 1998
VL 292
IS 4-6
BP 686
EP 690
DI 10.1016/S0009-2614(98)00732-5
PG 5
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 112EZ
UT WOS:000075482300049
ER
PT J
AU Queisser, HJ
Haller, EE
AF Queisser, HJ
Haller, EE
TI Defects in semiconductors: Some fatal, some vital
SO SCIENCE
LA English
DT Review
ID DX CENTERS; ELECTRONIC-STRUCTURE; NATIVE DEFECTS; GAAS; GERMANIUM;
DONOR; SPECTROSCOPY; ALXGA1-XAS; ANTISITE; STATE
AB The role of defects as essential entities in semiconductor materials is reviewed. Early experiments with semiconductors were hampered by the extreme sensitivity of the, electronic properties to minute concentrations of impurities. Semiconductors were viewed as a family of solids with irreproducible properties. Scientific efforts overcame this idiosyncrasy and turned the art of impurity doping into today's exceedingly useful and reproducible technology that is used to control precisely electrical conductivity, composition, and minority carrier lifetimes over wide ranges. Native defects such as vacancies and self-interstitials control basic processes, foremost self- and dopant diffusion. The structural properties of dislocations and higher dimensional defects have been studied with atomic resolution, but a thorough theoretical understanding of their electronic properties is incomplete. Reactions between defects within the host Lattices are increasingly better understood and are used for gettering and electrical passivation of unwanted impurities. Metastable defects such as DX centers and the EL2-related arsenic antisite are briefly discussed. The recent development of isotopically controlled semiconductors has created new research opportunities in this field.
C1 Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Queisser, HJ (reprint author), Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA.
NR 43
TC 184
Z9 190
U1 5
U2 88
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD AUG 14
PY 1998
VL 281
IS 5379
BP 945
EP 950
DI 10.1126/science.281.5379.945
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 110ZK
UT WOS:000075412700035
ER
PT J
AU Sturchio, NC
Antonio, MR
Soderholm, L
Sutton, SR
Brannon, JC
AF Sturchio, NC
Antonio, MR
Soderholm, L
Sutton, SR
Brannon, JC
TI Tetravalent uranium in calcite
SO SCIENCE
LA English
DT Article
ID ABSORPTION FINE-STRUCTURE; RADIONUCLIDES
AB X-ray absorption spectroscopy and x-ray fluorescence microprobe studies of 35-million-year-old calcite from a Mississippi Valley-type zinc ore deposit indicate substitution of tetravalent uranium for divalent calcium. Thus, tetravalent uranium has a stable location in calcite deposited under reducing conditions. This result validates uranium-series dating methods (including uranium/lead dating) for ancient calcite and shows that calcite provides a sink for uranium in deep groundwater aquifers and anoxic lacustrine and marine basins.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA.
Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA.
Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA.
RP Sturchio, NC (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 26
TC 81
Z9 81
U1 3
U2 28
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD AUG 14
PY 1998
VL 281
IS 5379
BP 971
EP 973
DI 10.1126/science.281.5379.971
PG 3
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 110ZK
UT WOS:000075412700040
ER
PT J
AU Adzic, RR
Wang, JX
AF Adzic, RR
Wang, JX
TI Bromide adsorption induced formation of thallium bromide adlayers with
varying composition and structure on the Au(111) electrode surface
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Letter
ID UNDERPOTENTIAL DEPOSITION; METAL MONOLAYER; TL-ADLAYERS; COADSORPTION;
COPPER; PT(111); GOLD; RESOLUTION; CHLORIDE; ANIONS
AB The underpotential deposition of Tl on Au(111) in 0.1 M HClO4 solution containing 1 mM Tl+ and 1 mM Br- has been investigated by using cyclic voltammetry, in situ X-ray scattering, and rotating disk-ring techniques. Three interesting phenomena for the UPD of metals in the presence of adsorbed anions are reported, viz., (i) an increase of the underpotential shift for deposition of Tl on Au(111) in the presence of Br- in solution, (ii) a formation of two mixed adlayers, surface compounds, with the stoichiometry Tl-Br-2 and Tl-Br, and (iii) an exceptionally complex structural behavior of this system with five ordered phases. Bromide and thallium form incommensurate rotated-hexagonal close-packed phases at ca. 0.85 and -0.3 V, respectively. In the intermediate potential region three mixed phases exist, identified as 3TlBr(2)-(root 13 x root 13), 2TlBr-(3 x root 3), and TlBr-c(p x root 3).
C1 Brookhaven Natl Lab, Dept Appl Sci, Div Chem Sci, Upton, NY 11973 USA.
RP Adzic, RR (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Div Chem Sci, Upton, NY 11973 USA.
RI Wang, Jia/B-6346-2011
NR 16
TC 7
Z9 7
U1 1
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5647
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD AUG 13
PY 1998
VL 102
IS 33
BP 6305
EP 6308
DI 10.1021/jp980740i
PG 4
WC Chemistry, Physical
SC Chemistry
GA 112TP
UT WOS:000075510500001
ER
PT J
AU Szymanski, Z
Nazarewicz, W
AF Szymanski, Z
Nazarewicz, W
TI Rotating pseudo-oscillator scheme: pseudo-spin symmetry and identical
bands
SO PHYSICS LETTERS B
LA English
DT Article
ID SUPERDEFORMED BANDS; DEFORMED-NUCLEI; ATOMIC-NUCLEI; MASS REGION;
MEAN-FIELD; MODEL; DEFORMATION; ALIGNMENT; DY-153
AB A simple coupling scheme for rotating nuclei, based on the pseudo-spin symmetry of the nuclear mean field, is proposed. This scheme applies to rotational bands built on natural-parity orbitals carrying aligned pseudo-spin, and can be used to classify intrinsic configurations in a rotating nucleus in terms of quantum numbers of the rotating harmonic oscillator potential. The effect of the shape polarization due to natural-parity orbitals is investigated for some superdeformed bands from the Gd/Dy region. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland.
Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA.
Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Szymanski, Z (reprint author), Univ Warsaw, Inst Theoret Phys, Hoza 69, PL-00681 Warsaw, Poland.
NR 33
TC 9
Z9 9
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
J9 PHYS LETT B
JI Phys. Lett. B
PD AUG 13
PY 1998
VL 433
IS 3-4
BP 229
EP 235
DI 10.1016/S0370-2693(98)00601-7
PG 7
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 112FY
UT WOS:000075484500002
ER
PT J
AU Cho, CY
Youngquist, RS
Paikoff, SJ
Beresini, MH
Hebert, AR
Berleau, LT
Liu, CW
Wemmer, DE
Keough, T
Schultz, PG
AF Cho, CY
Youngquist, RS
Paikoff, SJ
Beresini, MH
Hebert, AR
Berleau, LT
Liu, CW
Wemmer, DE
Keough, T
Schultz, PG
TI Synthesis and screening of linear and cyclic oligocarbamate libraries.
Discovery of high affinity ligands for GPIIb/IIIa
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SOLID-PHASE SYNTHESIS; COMBINATORIAL PEPTIDE LIBRARIES;
BIOLOGICALLY-ACTIVE PEPTIDES; GLYCOPROTEIN-IIB-IIIA; DRUG DISCOVERY;
UNNATURAL BIOPOLYMER; RGD PEPTIDES; SH3 DOMAIN; CHEMISTRY; DESIGN
AB Synthetic methodology has been developed for the generation of large, diverse libraries of "unnatural" carbamate oligomers using the "one bead, one peptide" method. Using a pool of 27 structurally and functionally diverse monomers, one acyclic and two cyclic libraries were synthesized and screened for binding to the integrin GPIIb/IIIa. Several classes of oligocarbamate ligands for GPIlb/IIIa were discovered, and two cyclic ligands have activities that are within a factor of 3 of kistrin, a snake venom protein that effectively inhibits platelet aggregation. Preliminary pharmacokinetic characterization was performed on a-linear oligocarbamate ligand, which was cleared from plasma with a half-life of 3.6 min.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
Procter & Gamble Co, Miami Valley Labs, Cincinnati, OH 45253 USA.
Genentech Inc, Dept Bioanalyt Technol, S San Francisco, CA USA.
Genentech Inc, Dept Metab & Pharmacokinet, S San Francisco, CA USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Schultz, PG (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
NR 85
TC 44
Z9 44
U1 0
U2 3
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD AUG 12
PY 1998
VL 120
IS 31
BP 7706
EP 7718
DI 10.1021/ja9734399
PG 13
WC Chemistry, Multidisciplinary
SC Chemistry
GA 111CQ
UT WOS:000075420100006
ER
PT J
AU Limbach, HH
Ulrich, S
Grundemann, S
Buntkowsky, G
Sabo-Etienne, S
Chaudret, B
Kubas, GJ
Eckert, J
AF Limbach, HH
Ulrich, S
Grundemann, S
Buntkowsky, G
Sabo-Etienne, S
Chaudret, B
Kubas, GJ
Eckert, J
TI NMR and INS line shapes of transition metal hydrides in the presence of
coherent and incoherent dihydrogen exchange
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article; Proceedings Paper
CT 2nd Symposium on Hydrogen and Quantum Mechanical Phenomena in the
Coordination Sphere of Transition Metals
CY DEC 13-15, 1995
CL SANTA FE, NEW MEXICO
ID QUANTUM-MECHANICAL EXCHANGE; IRIDIUM TRIHYDRIDE COMPLEXES;
MOLECULAR-HYDROGEN COMPLEXES; NUCLEAR-MAGNETIC-RESONANCE; SOLID-STATE;
SPECTROSCOPIC PROPERTIES; TEMPERATURE-DEPENDENCE; DYNAMIC NMR;
COUPLINGS; TAUTOMERISM
AB In this paper a unified description of the effects of the coherent and incoherent dihydrogen exchange on the NMR and INS spectra of transition metal hydrides based on the quantum-mechanical density matrix formalism of Alexander-Binsch is proposed. The dynamic parameters of the line shape analyses are the exchange couplings or rotational tunnel splittings J of the coherent exchange and the rate constants k of the incoherent exchange. As experimental examples, we report the temperature dependent values J and k for 1 equivalent to Cp*RuH3(PCy3) (Cp* equivalent to C-5(CH3)(5) and Cy equivalent to cyclohexyl) including the kinetic HH/HD/DD isotope effects on the incoherent exchange, determined by NMR, and for the tungsten dihydrogen complex 2 equivalent to W(PCy3)(2) (CO)(3)-(eta-H-2), determined by INS. The temperature dependence of J and Ic is interpreted qualitatively in terms of a simple reaction scheme involving at each temperature a ground state and a dominant ro-vibrationally excited state. Using formal kinetics it is shown that a coherent exchange in the excited state contributes to J only if this exchange presents the rate Limiting reaction step, i.e., if vibrational deactivation is fast. This is the case for levels located substantially below the top of the barrier. A very fast coherent exchange of levels located close to the top of the barrier contributes only to k. This result reproduces in a simple way the quantum-mechanical results of Szymanski, S. J. Chem. Phys. 1996, 104, 8216 and Scheurer, C.; Wiedenbruch, R.; Meyer, R.; Ernst, R. R. J. Chern. Phys. 1997, 106, 1. The results concerning the coherent and incoherent exchange processes in 1 and 2 are discussed in terms of the simplified reaction model.
C1 Frei Univ Berlin, Inst Organ Chem, D-14195 Berlin, Germany.
CNRS, Chim Coordinat Lab, UP 8241, F-31077 Toulouse, France.
Univ Calif Los Alamos Natl Lab, LANSCE, Los Alamos, NM 87545 USA.
RP Limbach, HH (reprint author), Frei Univ Berlin, Inst Organ Chem, Takustr 3, D-14195 Berlin, Germany.
RI Buntkowsky, Gerd/B-3206-2010; Limbach, Hans-Heinrich/G-8858-2011
OI Buntkowsky, Gerd/0000-0003-1304-9762; Limbach,
Hans-Heinrich/0000-0002-2084-6359
NR 83
TC 36
Z9 36
U1 2
U2 8
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD AUG 12
PY 1998
VL 120
IS 31
BP 7929
EP 7943
DI 10.1021/ja962903r
PG 15
WC Chemistry, Multidisciplinary
SC Chemistry
GA 111CQ
UT WOS:000075420100031
ER
PT J
AU Schneibel, JH
Liu, CT
Heatherly, L
Kramer, MJ
AF Schneibel, JH
Liu, CT
Heatherly, L
Kramer, MJ
TI Assessment of processing routes and strength of a 3-phase molybdenum
boron silicide (Mo5Si3-Mo5SiB2-Mo3Si) (vol 38, pg 1169, 1998)
SO SCRIPTA MATERIALIA
LA English
DT Correction
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA.
RP Schneibel, JH (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA.
NR 1
TC 4
Z9 4
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 11
PY 1998
VL 39
IS 6
BP 831
EP 831
PG 1
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 115PG
UT WOS:000075673400024
ER
PT J
AU Kendelewicz, T
Liu, P
Brown, GE
Nelson, EJ
AF Kendelewicz, T
Liu, P
Brown, GE
Nelson, EJ
TI Interaction of sodium overlayers with the PbS(100) (galena) surface:
evidence for a Na <-> Pb exchange reaction
SO SURFACE SCIENCE
LA English
DT Article
DE alkali metals; atom-solid interactions; low index single crystal
surfaces; metal-semiconductor interfaces; semiconducting surfaces; soft
X-ray photoelectron spectroscopy; sulphides; surface chemical reaction;
surface relaxation and reconstruction; X-ray scattering, diffraction,
and reflection
ID INTERFACE FORMATION; ALKALI-METAL; PBTE; PBS; RECONSTRUCTION
AB X-ray standing wave (XSW) and core level photoemission methods were used to study the atomic and electronic structure of sodium overlayers on cleaved (100) surfaces of the mineral galena (PbS). Both techniques provide clear evidence of an exchange reaction in which, at least, a portion of the surface lead ions (Pb2+) is replaced by sodium ions (Na+). The replacement results in a new component in the photoemission spectra associated with reduced lead, while a direct change in the lead surface atom position relative to the 200 bulk diffraction planes is observed in the XSW signal. Changes in the surface geometry of sulfur ions are smaller. The interface of the reacted PbS surface is strongly disordered, as indicated by a small coherent fraction (0.37-0.48) for sodium and rapid quenching of the substrate (1 x 1) low energy electron diffraction pattern. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA.
Stanford Univ, Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA.
RP Kendelewicz, T (reprint author), Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA.
EM tjk@ee.stanford.edu
NR 35
TC 6
Z9 6
U1 1
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD AUG 11
PY 1998
VL 411
IS 1-2
BP 10
EP 22
DI 10.1016/S0039-6028(98)00186-1
PG 13
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 115FC
UT WOS:000075652000016
ER
PT J
AU Yoon, M
Mochrie, SGJ
Tate, MW
Gruner, SM
Eikenberry, EF
AF Yoon, M
Mochrie, SGJ
Tate, MW
Gruner, SM
Eikenberry, EF
TI Periodic faceting of a Si(113) surface miscut towards [1(1)over-bar-0]
SO SURFACE SCIENCE
LA English
DT Article
DE silicon; stepped single crystal surfaces; surface structure; X-ray
scattering, diffraction and reflection
ID ORIENTATIONAL PHASE-DIAGRAM; X-RAY-SCATTERING; VICINAL SI(111);
TRICRITICALITY; STEPS; RECONSTRUCTION; SEPARATION
AB The equilibrium morphology of a Si(113) surface miscut by a polar angle of 1.8 degrees away from the (113) orientation along an azimuth within 3.5 degrees of the [1 (1) over bar 0] direction has been characterized by X-ray scattering for temperatures between 900 and 1450 K. Above 1215 K, a uniformly stepped surface is found. Between 1075 and 1215 K, the surface phase-separates into two coexisting phases of different polar and azimuthal orientations. With decreasing temperature, the phase with the smaller polar angle approaches the (113) orientation, while the other phase exhibits an increasingly large polar angle (up to 9 degrees). The two coexisting phases form a periodic groove structure with periodicity ranging from 740 to 940 Angstrom, depending on the temperature. Below 1075 K, the phase with the larger polar angle further phase-separates into two phases of different azimuth (+/- 17 degrees), resulting in coexistence among three distinct phases. The three coexisting phases form a quasi-periodic array of pyramids. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 MIT, Dept Phys, Cambridge, MA 02139 USA.
Princeton Univ, Dept Phys, Princeton, NJ 08544 USA.
RP Yoon, M (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA.
EM yoonm@ornl.gov
RI Gruner, Sol/G-2924-2010
OI Gruner, Sol/0000-0002-1171-4426
NR 33
TC 28
Z9 28
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD AUG 11
PY 1998
VL 411
IS 1-2
BP 70
EP 85
DI 10.1016/S0039-6028(98)00333-1
PG 16
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 115FC
UT WOS:000075652000022
ER
PT J
AU Shi, F
Shen, Z
Delaney, DW
Goldman, AI
Jenks, CJ
Kramer, MJ
Lograsso, T
Thiel, PA
Van Hove, MA
AF Shi, F
Shen, Z
Delaney, DW
Goldman, AI
Jenks, CJ
Kramer, MJ
Lograsso, T
Thiel, PA
Van Hove, MA
TI The surface structure of a beta-Al(Cu1-xFex)-(110) film formed on an
AlCuFe quasicrystal substrate, analyzed by dynamical LEED
SO SURFACE SCIENCE
LA English
DT Article
DE alloys; aluminum; low energy electron diffraction (LEED); metallic
surfaces
ID TENSOR LEED; NIAL(110) SURFACE; PHASE; CO; AL; FE
AB In order to understand the unique properties of quasicrystalline surfaces, it is paramount to compare quasicrystalline and crystalline surfaces of similar chemical composition. To that end, the fivefold surface of an AlCuFe quasicrystal substrate was transformed, by ion bombardment and annealing, into a film with the beta-Al(Cu1-xFex) bulk structure. This is a CsCl structure with Fe and Cu atoms randomly occupying the body-center sites, and Al atoms at the corner sites. The film exposes a (110) free surface: its external structure was analyzed by dynamical low-energy electron diffraction in terms of atomic positions and layer-wise composition. The best fit between theory and experiment slightly favors a copper-rich composition in the surface layers (x = 0), although the sensitivity to the value of x is low, because Cu and Fe are very similar electron scatterers. The Al atoms in the surface layer buckle outward by 0.12 +/- 0.04 Angstrom relative to the Cu or Fe atoms in the same layer, while other relaxations from the bulk structure are small. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Thiel, PA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM thiel@ameslab.gov
RI Van Hove, Michel/A-9862-2008
OI Van Hove, Michel/0000-0002-8898-6921
NR 29
TC 21
Z9 22
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD AUG 11
PY 1998
VL 411
IS 1-2
BP 86
EP 98
DI 10.1016/S0039-6028(98)00334-3
PG 13
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 115FC
UT WOS:000075652000023
ER
PT J
AU Baer, R
Zeiri, Y
Kosloff, R
AF Baer, R
Zeiri, Y
Kosloff, R
TI Quantum diffusion of hydrogen and deuterium on nickel (100)
SO SURFACE SCIENCE
LA English
DT Letter
DE ab initio quantum chemical methods and calculations; computer
simulations; construction and use of effective interatomic interactions;
diffusion and migration; hydrogen; low index single crystal surfaces;
nickel; single crystal surfaces
ID TRANSITION-STATE THEORY; SURFACE-DIFFUSION; MONTE-CARLO; 110 PLANE;
NI(100); TUNGSTEN; DYNAMICS; NI(111); RATES; TEMPERATURE
AB The diffusion constants of hydrogen and deuterium at low temperature are calculated using the surrogate Hamiltonian method and an embedded atom potential. A comparison with previous experimental and theoretical results is made. A crossover to temperature-independent tunneling occurs at 69 K for hydrogen and at 46 K for deuterium. An inverse isotope effect at intermediate temperatures is found, consistent with experiment. Deviations are found at low temperature where a large isotope effect is calculated. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
Nucl Res Ctr Negev, Dept Chem, IL-84190 Beer Sheva, Israel.
Hebrew Univ Jerusalem, Dept Phys Chem, IL-91904 Jerusalem, Israel.
Hebrew Univ Jerusalem, Fritz Haber Res Ctr, IL-91904 Jerusalem, Israel.
RP Baer, R (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI zeiri, yehuda/F-3956-2012; Kosloff, Ronnie/D-2388-2013
OI Kosloff, Ronnie/0000-0001-6201-2523
NR 26
TC 15
Z9 15
U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD AUG 11
PY 1998
VL 411
IS 1-2
BP L783
EP L788
DI 10.1016/S0039-6028(98)00322-7
PG 6
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 115FC
UT WOS:000075652000001
ER
PT J
AU Carpinelli, JM
Swartzentruber, BS
AF Carpinelli, JM
Swartzentruber, BS
TI Detailed energetic interactions of adsorbed Si dimers on Si(001)
SO SURFACE SCIENCE
LA English
DT Letter
DE diffusion and migration; low index single crystal surfaces; scanning
tunneling microscopy; silicon; surface defects; surface diffusion
ID TUNNELING-MICROSCOPY; SURFACE-DIFFUSION; AD-DIMERS; NUCLEATION; SI(100)
AB We investigated adsorbed Si dimers on Si(001) at similar to 100 degrees C with atom-tracking STM to determine the effect of various local environments on surface dynamics. Specifically, we find an asymmetry in the dimer diffusion along a buckled A-type step. We also measure dimer repulsion and attraction respectively from in-row and adjacent-row vacancy defects. These findings lend insight into the nature of the dimer-substrate bond and defect structure. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Sandia Natl Lab, Albuquerque, NM 87185 USA.
RP Carpinelli, JM (reprint author), Sandia Natl Lab, Surface & Interface Sci MS-1413, Albuquerque, NM 87185 USA.
NR 19
TC 7
Z9 7
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD AUG 11
PY 1998
VL 411
IS 1-2
BP L828
EP L833
DI 10.1016/S0039-6028(98)00400-2
PG 6
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 115FC
UT WOS:000075652000008
ER
PT J
AU Han, K
Embury, JD
Petrovic, JJ
Weatherly, GC
AF Han, K
Embury, JD
Petrovic, JJ
Weatherly, GC
TI Microstructural aspects of Cu-Ag produced by the Taylor wire method
SO ACTA MATERIALIA
LA English
DT Article
ID ALLOYS; SYSTEMS; PHASE
AB The microstructure and phase transformations of Cu-16 at.% Ag fabricated by the Taylor wire technique of drawing molten metals in a glass tube have been studied. As the diameter of the wire becomes smaller and the cooling rate increases, the scale of the microstructure is refined. Nano-crystals of supersaturated solid solution with a 10 nm grain size were observed when the wire diameter was less than 10 mu m. When the diameter of the wire was larger than 20 mu m, proeutectic Cu and the Cu + Ag eutectic were found. In the region where the Cu-Ag eutectic was formed, a (111) twin orientation relationship was found between Cu and Ag. (C) 1998 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87545 USA.
McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada.
RP Han, K (reprint author), Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Mail Stop 765, Los Alamos, NM 87545 USA.
NR 29
TC 32
Z9 39
U1 2
U2 14
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD AUG 10
PY 1998
VL 46
IS 13
BP 4691
EP 4699
DI 10.1016/S1359-6454(98)00135-9
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 112KN
UT WOS:000075494000021
ER
PT J
AU Subramanian, R
Schneibel, JH
AF Subramanian, R
Schneibel, JH
TI The ductile-brittle size transition of iron aluminide ligaments in an
FeAl/TiC composite
SO ACTA MATERIALIA
LA English
DT Article
ID ROOM-TEMPERATURE; SINGLE-CRYSTALS; FRACTURE-TOUGHNESS; STOICHIOMETRIC
FEAL; TENSILE PROPERTIES; AL-ALLOYS; STRENGTH; FLOW; DEFORMATION;
MECHANISM
AB The fracture surfaces of FeAl/TiC composites containing 70 vol.% TiC were investigated. Since thin iron aluminide ligaments in the composites fractured in a ductile manner, whereas thicker ones fractured by cleavage, a systematic correlation of the fracture mode to the ligament thickness was performed. The results clearly show that FeAl ligaments thicker than about 1-2 mu m fracture by cleavage and those smaller in size fracture predominantly in a ductile manner. The ductile failure mode is attributed to the limited dislocation pile-up distance available for very thin ligaments, which prevents high stresses from building up and eliminates cleavage fracture. It is also shown that the ductile-brittle transition size is controlled by alloying and/or heal treatment. No significant dependence of the fracture toughness on the fracture mode could be found. (C) 1998 Acta Metallurgica Inc. Published bl; Elsevier Science Ltd. Ali rights reserved.
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
RP Schneibel, JH (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA.
NR 53
TC 24
Z9 25
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD AUG 10
PY 1998
VL 46
IS 13
BP 4733
EP 4741
DI 10.1016/S1359-6454(98)00130-X
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 112KN
UT WOS:000075494000025
ER
PT J
AU Dupont, JN
Robino, CV
Marder, AR
AF Dupont, JN
Robino, CV
Marder, AR
TI Modeling solute redistribution and microstructural development in fusion
welds of Nb-bearing superalloys
SO ACTA MATERIALIA
LA English
DT Article
ID SOLIDIFICATION; INCONEL-718
AB Solute redistribution and microstructural evolution have been modeled for gas tungsten are fusion welds in experimental Ni base and Fe base Nb-bearing superalloys. The multi-component alloys were modeled as a ternary system by grouping the matrix (Fe, Ni, Cr) elements together as the "solvent" to form the gamma component of the gamma-Nb-C "ternary system". The variation in fraction liquid and liquid composition during the primary L --> gamma and eutectic type L -->(gamma + NbC) stages of solidification were calculated for conditions of negligible Nb diffusion and infinitely fast C diffusion in the solid phase. The proposed model is based on modifications of solute redistribution equations originally developed by Mehrabian and Flemings. Results of the calculations were superimposed on the pseudo-ternary gamma-Nb-C solidification surfaces to predict the solidification reaction sequences along with the total and individual amounts of gamma/NbC and gamma/Laves eutectic-type constituents which form during solidification. Comparison was made to experimentally measured values, and reasonable agreement was found. The model results permit quantitative interpretations of composition-microstructure relations in these Nb-bearing experimental alloys and should provide useful insight into comparable commercial alloy systems as well. (C) 1998 Acta Metallurgica Inc. Published by Elsevier, Science Ltd. Ali rights reserved.
C1 Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Dupont, JN (reprint author), Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA.
NR 9
TC 50
Z9 53
U1 3
U2 20
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD AUG 10
PY 1998
VL 46
IS 13
BP 4781
EP 4790
DI 10.1016/S1359-6454(98)00123-2
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 112KN
UT WOS:000075494000029
ER
PT J
AU Brundermann, E
Haller, EE
Muravjov, AV
AF Brundermann, E
Haller, EE
Muravjov, AV
TI Terahertz emission of population-inverted hot-holes in
single-crystalline silicon
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID FAR-INFRARED-EMISSION; MAGNETIC-FIELDS; GE; INVERSION
AB We report THz emission of hot-holes in p-type silicon doped with a boron acceptor concentration of N-A=1.5x10(15) cm(-3). We apply crossed electric (E) and magnetic (B) fields to the crystal cooled to liquid helium temperature. Optical gain is found for held ratios E/B in the range 0.5-1 kV cm(-1) T-1. We calculate optical gain spectra in Si and identify possible laser transitions. (C) 1998 American Institute of Physics.
C1 Univ Calif Berkeley, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Russian Acad Sci, Inst Phys Microstruct, Nizhnii Novgorod 603600, Russia.
RP Brundermann, E (reprint author), Univ Calif Berkeley, Berkeley, CA 94720 USA.
RI Bruendermann, Erik/J-7186-2016
OI Bruendermann, Erik/0000-0003-4119-3489
NR 15
TC 4
Z9 4
U1 1
U2 1
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 10
PY 1998
VL 73
IS 6
BP 723
EP 725
PG 3
WC Physics, Applied
SC Physics
GA 109CJ
UT WOS:000075303400007
ER
PT J
AU Liu, G
Seurin, JF
Chuang, SL
Babic, DI
Corzine, SW
Tan, M
Barnes, DC
Tiouririne, TN
AF Liu, G
Seurin, JF
Chuang, SL
Babic, DI
Corzine, SW
Tan, M
Barnes, DC
Tiouririne, TN
TI Mode selectivity study of vertical-cavity surface-emitting lasers
SO APPLIED PHYSICS LETTERS
LA English
DT Article
AB Mode selectivity of an air-post index-guided vertical-cavity surface-emitting laser structure operating at 1550 nm is investigated using a full-vector Maxwell-equation solver with a finite-difference time-domain method. The resonance wavelengths, quality factors, and spatial field distributions are calculated for the three lowest-order modes. Transverse-mode competition is quantitatively described as a function of the cavity size and the pillar etch depth. (C) 1998 American Institute of Physics.
C1 Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA.
Hewlett Packard Co, Palo Alto, CA 94304 USA.
Univ Calif Los Alamos Natl Lab, Appl Theoret & Computat Div, Los Alamos, NM 87545 USA.
RP Liu, G (reprint author), Univ Illinois, Dept Elect & Comp Engn, 1406 W Green St, Urbana, IL 61801 USA.
EM s-chuang@uiuc.edu
NR 13
TC 18
Z9 18
U1 0
U2 1
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 10
PY 1998
VL 73
IS 6
BP 726
EP 728
DI 10.1063/1.121981
PG 3
WC Physics, Applied
SC Physics
GA 109CJ
UT WOS:000075303400008
ER
PT J
AU Siegal, MP
Barbour, JC
Provencio, PN
Tallant, DR
Friedmann, TA
AF Siegal, MP
Barbour, JC
Provencio, PN
Tallant, DR
Friedmann, TA
TI Amorphous-tetrahedral diamondlike carbon layered structures resulting
from film growth energetics
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID PULSED-LASER DEPOSITION; ARC; ENERGY
AB High-resolution transmission electron microscopy (HRTEM) shows that amorphous-tetrahedral diamond like carbon (a-tC) films grown by pulsed-laser deposition on Si(100) consist of three-to-four layers, depending on the growth energetics. We estimate the density of each layer using both HRTEM image contrast and Rutherford backscattering spectrometry. The first carbon layer and final surface layer have relatively low density. The bulk of the film between these two layers has higher density. For films grown under the most energetic conditions, there exists a superdense a-tC layer between the interface and bulk layers. The density of all four layers, and the thickness of the surface and interfacial layers, correlate well with the energetics of the depositing carbon species. (C) 1998 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Siegal, MP (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 24
TC 54
Z9 55
U1 0
U2 6
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 10
PY 1998
VL 73
IS 6
BP 759
EP 761
DI 10.1063/1.121992
PG 3
WC Physics, Applied
SC Physics
GA 109CJ
UT WOS:000075303400019
ER
PT J
AU Han, JH
Shin, MC
Kang, SH
Morris, JW
AF Han, JH
Shin, MC
Kang, SH
Morris, JW
TI Effects of precipitate distribution on electromigration in Al-Cu
thin-film interconnects
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID RELIABILITY
AB This letter reports that electromigration lifetimes of Al-2Cu (wt. %) thin-film conducting lines increase by more than three times when the lines are optimally aged to facilitate finely dispersed Al2Cu precipitates in the interior of the grains. In contrast to other studies which did not report a beneficial aging effect for AI-Cu films, the present work substantiates the fact that proper control of Al2Cu precipitates improves resistance to electromigration failure. However, the benefit of aging the Al-2Cu lines investigated here was less pronounced and confined to a more narrow heat-treatment "window" than that previously found for the Al-2Cu-1Si lines. (C) 1998 American Institute of Physics.
C1 Korea Inst Sci & Technol, Div Met, Seoul 136791, South Korea.
Univ Calif Berkeley, Ctr Adv Mat, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Han, JH (reprint author), Korea Inst Sci & Technol, Div Met, Seoul 136791, South Korea.
NR 12
TC 15
Z9 18
U1 0
U2 1
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 10
PY 1998
VL 73
IS 6
BP 762
EP 764
DI 10.1063/1.121993
PG 3
WC Physics, Applied
SC Physics
GA 109CJ
UT WOS:000075303400020
ER
PT J
AU Owen, JM
Weinberg, DH
Evrard, AE
Hernquist, L
Katz, N
AF Owen, JM
Weinberg, DH
Evrard, AE
Hernquist, L
Katz, N
TI Cosmological simulations with scale-free initial conditions. I.
Adiabatic hydrodynamics
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology : theory; hydrodynamics; large-scale structure of universe;
methods : numerical
ID EINSTEIN-DESITTER UNIVERSE; X-RAY-CLUSTERS; LUMINOSITY FUNCTION;
EXPANDING UNIVERSE; RICH CLUSTERS; DARK-MATTER; GALAXIES; MASS;
EVOLUTION; GAS
AB We analyze hierarchical structure formation based on scale-free initial conditions in an Einstein-de Sitter universe, including a baryonic component with Omega(bary) = 0.05. We present three independent, smoothed particle hydrodynamics (SPH) simulations, performed at two resolutions (32(3) and 64(3) dark matter and baryonic particles) and with two different SPH codes (TreeSPH and P3MSPH). Each simulation is based on identical initial conditions, which consist of Gaussian-distributed initial density fluctuations that have a power spectrum P(k) proportional to k(-1). The baryonic material is modeled as an ideal gas subject only to shock heating and adiabatic heating and cooling; radiative cooling and photoionization heating are not included. The evolution is expected to be self-similar in time, and under certain restrictions we identify the expected scalings for many properties of the distribution of collapsed objects in all three realizations. The distributions of dark matter masses, baryon masses, and mass- and emission-weighted temperatures scale quite reliably. However, the density estimates in the central regions of these structures are determined by the degree of numerical resolution. As a result, mean gas densities and Bremsstrahlung luminosities obey the expected scalings only when calculated within a limited dynamic range in density contrast. The temperatures and luminosities of the groups show tight correlations with the baryon masses, which we find can be well represented by power laws. The Press-Schechter (PS) approximation predicts the distribution of group dark matter and baryon masses fairly well, though it tends to overestimate the baryon masses. Combining the PS mass distribution with the measured relations for T(M) and L(M) predicts the temperature and luminosity distributions fairly accurately, though there are some discrepancies at high temperatures/luminosities. In general the three simulations agree well for the properties of resolved groups, where a group is considered resolved if it contains more than 32 particles.
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
Ohio State Univ, Dept Astron, Columbus, OH 43210 USA.
Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
Univ Calif Santa Cruz, Lick Observ, Santa Cruz, CA 95064 USA.
Univ Massachusetts, Dept Phys & Astron, Amherst, MA 01003 USA.
Inst Astrophys, F-75014 Paris, France.
RP Owen, JM (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-16, Livermore, CA 94551 USA.
EM mikeowen@llnl.gov; dhw@astronomy.ohio-state.edu; evrard@umich.edu;
lars@ucolick.org; nsk@kaka.phast.umass.edu
OI Evrard, August/0000-0002-4876-956X
NR 33
TC 2
Z9 2
U1 0
U2 0
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 5720 SOUTH WOODLAWN AVE, CHICAGO, IL 60637-1603 USA
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD AUG 10
PY 1998
VL 503
IS 1
BP 16
EP 36
DI 10.1086/305957
PN 1
PG 21
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 152KK
UT WOS:000077776400002
ER
PT J
AU Hix, WR
Khokhlov, AM
Wheeler, JC
Thielemann, FK
AF Hix, WR
Khokhlov, AM
Wheeler, JC
Thielemann, FK
TI The quasi-equilibrium-reduced alpha-network
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE methods : numerical; nuclear reactions, nucleosynthesis, abundances;
stars : evolution; supernovae : general
ID SILICON
AB An examination of the process of silicon burning, the burning stage that leads to the production of the iron peak nuclei, reveals that the nuclear evolution is dominated by large groups of nuclei in mutual equilibrium. These quasi-equilibrium (QSE) groups form well in advance of the global nuclear statistical equilibrium (NSE). We present an improved "minimal" nuclear network, which takes advantage of QSE in order to calculate the nuclear evolution and energy generation while further reducing the computational cost compared with a conventional alpha-chain network. During silicon burning the resultant QSE-reduced alpha-network is twice as fast as the full alpha-network it replaces and requires the tracking of only half as many abundance variables, without significant loss of accuracy. When the QSE-reduced alpha-network is used in combination with a conventional alpha-network stretching from He to Si, the combined network, which we call the alpha 7 network, provides an accurate approximation for all of the burning stages from He burning to NSE, while tracking only seven abundances. These reductions in computational cost and the number of species evolved make the alpha 7 network well suited for inclusion within hydrodynamic simulations, particularly those in multidimension.
C1 Univ Texas, Dept Astron, Austin, TX 78712 USA.
Naval Res Lab, Computat Phys & Fluid Dynam Lab, Washington, DC USA.
Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland.
RP Hix, WR (reprint author), Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA.
RI Hix, William/E-7896-2011
OI Hix, William/0000-0002-9481-9126
NR 12
TC 25
Z9 25
U1 0
U2 0
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 5720 SOUTH WOODLAWN AVE, CHICAGO, IL 60637-1603 USA
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD AUG 10
PY 1998
VL 503
IS 1
BP 332
EP 343
DI 10.1086/305968
PN 1
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 152KK
UT WOS:000077776400028
ER
PT J
AU De Propris, R
Eisenhardt, PR
Stanford, SA
Dickinson, M
AF De Propris, R
Eisenhardt, PR
Stanford, SA
Dickinson, M
TI The infrared luminosity function of galaxies in the Coma Cluster
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies : luminosity function, mass function; galaxies : clusters :
individual (Coma)
ID DWARF GALAXIES; FORNAX CLUSTER; POPULATION; MAGNITUDE; EVOLUTION;
CATALOG; SAMPLE; FIELD; CORE
AB An infrared survey of the central 650 arcmin(2) of the Coma Cluster is used to determine the H-band luminosity function for the cluster. Redshifts are available for all galaxies in the survey with H < 14.5, and for this sample we obtain a good fit to a Schechter function with H* = 11.13 and alpha = -0.78. These luminosity function parameters ale similar to those measured for field galaxies in the infrared, which is surprising considering the very different environmental densities and, presumably, merger histories for field galaxies. For fainter galaxies, we use two independent techniques to correct for field galaxy contamination in the cluster population: the B - R color-magnitude relation and an estimate for the level of background and foreground contamination from the literature. Using either method, we find a steep upturn for galaxies with 14 < H < 16, with slope alpha similar or equal to -1.7.
C1 CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
RP De Propris, R (reprint author), CALTECH, Jet Prop Lab, MS 169-327, Pasadena, CA 91109 USA.
EM propris@coma.jpl.nasa.gov; prme@kromos.jpl.nasa.gov; adam@igpp.llnl.gov;
med@stsci.edu
NR 40
TC 67
Z9 67
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD AUG 10
PY 1998
VL 503
IS 1
BP L45
EP L48
DI 10.1086/311531
PN 2
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 152KL
UT WOS:000077776500011
ER
PT J
AU Huang, DP
Corbett, JD
AF Huang, DP
Corbett, JD
TI A(5)TaAs(4)Tl(2) (A = Rb, K). Transition-metal zintl phases with a novel
complex ion: Synthesis, structure, and bonding
SO INORGANIC CHEMISTRY
LA English
DT Article
ID CLUSTER; CS
AB Reactions of the Rb-Tl-As system near 500 degrees C in tantalum containers always lead to the formation of Rb5TaAs4Tl2 because of reactions with the container wall. On-stoichiometry reactions of these three elements in Ta, or of the four components in SiO2, afford the pure compound. Rb5TaAs4Tl2 crystallizes in orthorhombic system, space group Pnma (No. 62), Z = 4, a = 19.196(5) Angstrom, b = 11.104(3) Angstrom, c = 7.894(4) Angstrom. The isostructural K5TaAs4Tl2 also exists. The main structural feature is the closed-shell polyanion TaAs4Tl25- which can be viewed as the result of a reaction of a TaAs47- tetrahedron with two Tl+ so as to bridge opposed edges of the farmer. EHMO calculations for TaAs47- (T-d) and TaAs4Tl25- (D-2h) demonstrate the character of the bonding of Tl s and p to the electron-rich As. Two kinds of multicentered bonds are evident: pi(perpendicular to) and sigma plus pi(\\) in the plane of the TlAs2Ta portions and 5c-4e d-p bonds within TaAs4.
C1 Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA.
RP Corbett, JD (reprint author), Iowa State Univ Sci & Technol, Ames Lab, DOE, Ames, IA 50011 USA.
NR 20
TC 7
Z9 7
U1 0
U2 3
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD AUG 10
PY 1998
VL 37
IS 16
BP 4006
EP 4010
DI 10.1021/ic9802395
PG 5
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 110GE
UT WOS:000075371200016
ER
PT J
AU McKee, SD
Burns, CJ
Avens, LR
AF McKee, SD
Burns, CJ
Avens, LR
TI Halide effects in the synthesis of mixed uranium(IV) aryloxide-halide
compounds
SO INORGANIC CHEMISTRY
LA English
DT Article
ID RAY CRYSTAL-STRUCTURE; VALENT ORGANOURANIUM COMPLEXES; ORGANO-METALLIC
COMPOUNDS; LEWIS BASE ADDUCTS; ORGANOMETALLIC CHEMISTRY; ALKOXIDE
CHEMISTRY; FUNCTIONAL-GROUPS; THORIUM; TETRAHYDROFURAN; PRECURSORS
AB Several uranium(IV) aryloxide and mixed aryloxide-halide compounds of the formula UX4-z(OAr)(z) (X = Cl, Br, I; OAr = 2,6-di-tert-butylphenoxide; z = 2, 3, 4) have been prepared by the reaction of KOAr with the appropriate uranium tetrahalide in tetrahydrofuran (THF). The complex UI4(CH3CN)(4) reacts with 2 equiv of KOAr in THF to yield the compound I2U(OAr)(2) (1). The utility of this reaction is Limited by the instability of UI4(CH3CN)(4) in THF, however, and isolated yields of the THF adduct of 1 do not exceed 50%, In contrast, UBr4(CH3CN)(4) is stable in THF solution and reacts with 2 equiv of KOAr to yield the dibromide, Br2U(OAr)(2)(THF) (4 . THF), in 77% yield. Under identical reaction conditions, UCl4 reacts to yield the complex [K(THF)(4)][UCl3(OAr)(2)] (5) in 68% yield. The uranium center in compound 5 is coordinated by two trans aryloxide ligands and three chloride ligands in a trigonal bipyramidal arrangement. Two chloride ligands of each unit are also coordinated to a potassium ion, forming an infinite chain in the lattice. Compounds 1 and 5 will further react with 1 equiv of KOAr to yield the compounds XU(OAr)(3) (2, X = I; 6, X = Cl). Both UI4(CH3CN)(4) and UCl4 will react with a 4.2 equiv of KOAr to yield the previously characterized compound U(OAr)(4) (3). The stability of the mixed aryloxide-halide uranium complexes toward ligand redistribution reactions has been investigated.
C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA.
RP Burns, CJ (reprint author), Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, CST-18,Mail Stop J514, Los Alamos, NM 87545 USA.
NR 33
TC 10
Z9 10
U1 0
U2 0
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0020-1669
J9 INORG CHEM
JI Inorg. Chem.
PD AUG 10
PY 1998
VL 37
IS 16
BP 4040
EP 4045
DI 10.1021/ic9803309
PG 6
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 110GE
UT WOS:000075371200021
ER
PT J
AU Vu, HX
AF Vu, HX
TI A massively parallel three-dimensional hybrid code for simulating
ion-driven parametric instabilities
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE massively parallel; three-dimensional; particle-in-cell; parametric in
stabilities; laser-produced plasmas; stimulated Brillouin scattering
ID ELECTROMAGNETIC PLASMA SIMULATION; PARTICLE SIMULATION; IMPLICIT;
FREQUENCY; WAVES; MODEL
AB A massively parallel three-dimensional hybrid particle-in-cell (PIC) code, implemented on the CRAY-T3D, is presented. The code is based on a physical model described in a previous report where the electrons are modeled as an adiabatic fluid with an arbitrary ratio of specific heats gamma and the electromagnetic field model is based on a temporal Wentzel-Krammers-Brillouin (WKB) approximation. On a CRAY-T3D with 512 processors, the code requires about 0.6 mu s/particle/time step. The largest test problem performed with this code consists of a computational mesh of 4096 x 64 x 64 (16 million) cells, a total of 256 million particles, and corresponds to a plasma volume of 50 mu m x 20 mu m x 20 mu m (:approximately 150 lambda x 60 lambda x 60 lambda, where lambda is the laser's vacuum wavelength). We believe this code is the first PIC computational tool capable of simulating low-frequency ion-driven parametric instabilities in a large, three-dimensional plasma volume and offers a unique opportunity for examining issues that are potentially vital to inertial confinement fusion (ICF), e.g., nonlinear ion kinetic effects and their role in nonlinear saturation mechanisms in three dimensions. Test simulations of the self-focusing (SF) instability and of the self-focusing-induced deflection of a laser beam are presented. (C) 1998 Academic Press.
C1 Univ Calif Los Alamos Natl Lab, Appl Theoret & Computat Div, Los Alamos, NM 87545 USA.
RP Vu, HX (reprint author), Univ Calif Los Alamos Natl Lab, Appl Theoret & Computat Div, POB 1663, Los Alamos, NM 87545 USA.
NR 43
TC 8
Z9 8
U1 0
U2 0
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD AUG 10
PY 1998
VL 144
IS 2
BP 257
EP 279
DI 10.1006/jcph.1998.5803
PG 23
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 110MX
UT WOS:000075385900002
ER
PT J
AU Brydon, D
Pearson, J
Marder, M
AF Brydon, D
Pearson, J
Marder, M
TI Solving stiff differential equations with the method of patches
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
ID NUMERICAL-SOLUTION; FLUID-DYNAMICS; SYSTEMS
AB We introduce a new method for solving very stiff sets of ordinary differential equations. The basic idea is to replace the original nanlinear equations with a set of equally stiff equations that are piecewise Linear, and therefore can be solved exactly. We demonstrate the value of the method on small systems of equations for which some other methods are inefficient or produce spurious solutions, estimate error bounds, and discuss extensions of the method to larger systems of equations and to partial differential equations. (C) 1998 Academic Press.
C1 Univ Texas, Ctr Nonlinear Dynam, Dept Phys, Austin, TX 78712 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Brydon, D (reprint author), Univ Texas, Ctr Nonlinear Dynam, Dept Phys, Austin, TX 78712 USA.
NR 18
TC 3
Z9 3
U1 0
U2 1
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD AUG 10
PY 1998
VL 144
IS 2
BP 280
EP 298
DI 10.1006/jcph.1998.6008
PG 19
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 110MX
UT WOS:000075385900003
ER
PT J
AU Bateson, WB
Hewett, DW
AF Bateson, WB
Hewett, DW
TI Grid and particle hydrodynamics: Beyond hydrodynamics via fluid element
particle-in-cell
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
ID SIMULATION; FIELD; CODE
AB A new plasma/fluid transport algorithm is presented that combines and retains the strengths of the particle and hydrodynamic methods. By including internal velocity characteristics of real particles within each finite size macro-particle (FSP), a redundancy is introduced in the representation of the real par-tide distribution that is recovered by the superposition of these macro-particles. This redundancy is exploited by merging particles that sufficiently overlap in parameter space. The internal velocity distribution is exploited by allowing the distribution within each FSP to evolve hydrodynamically, In turn the evolution establishes the partitioning of moments into central and expansion particles, Such aggressive increases in the number of individual FSPs probe for emerging features. If interesting features fail to materialize, aggressive merging provides particle economy. The objective is to economically recover details of the particle distribution necessary for accurate collisions. GaPH promises to accomplish this mission without squandering computational resources in uninteresting regions of phase space. This paper reports collisionless GaPH test results that compare well with analytic solutions that initially contain large gradients. (C) 1998 Academic Press.
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Bateson, WB (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
NR 8
TC 11
Z9 11
U1 0
U2 1
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD AUG 10
PY 1998
VL 144
IS 2
BP 358
EP 378
DI 10.1006/jcph.1997.5824
PG 21
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 110MX
UT WOS:000075385900006
ER
PT J
AU Gajewski, DA
Dilley, NR
Bauer, ED
Freeman, EJ
Chau, R
Maple, MB
Mandrus, D
Sales, BC
Lacerda, AH
AF Gajewski, DA
Dilley, NR
Bauer, ED
Freeman, EJ
Chau, R
Maple, MB
Mandrus, D
Sales, BC
Lacerda, AH
TI Heavy fermion behaviour of the cerium-filled skutterudites CeFe4Sb12 and
Ce0.9Fe3CoSb12
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID THERMOELECTRIC-MATERIALS; ALKALINE-EARTH; ANTIMONIDES; LAFE4P12
AB The low temperature properties of polycrystalline samples of the filled skutterudites CeFe4Sb12, Ce0.9Fe3CoSb12 and La0.9Fe3CoSb12, as well as the unfilled skutterudites Fe0.05C0.95Sb3 and CoSb3, have been investigated by means of electrical resistivity, specific heat and magnetic susceptibility measurements. The resistivity of CeFe4Sb12 exhibits a rather abrupt drop-off with decreasing temperature near 100 K; this drop-off temperature increases with increasing applied hydrostatic pressure, which is reminiscent of the onset of coherence in so-called Kondo lattice materials. The compounds CeFe4Sb12 and Ce0.9Fe3CoSb12 exhibit values of the electronic specific heat coefficient and Pauli susceptibility at low temperature which are enhanced over those of the lanthanum-filled and unfilled skutterudites. These quantities yield a Wilson ratio of order unity, which indicates that they both correspond to the properties of itinerant electrons. These transport, magnetic and thermodynamic properties suggest a moderately heavy fermion ground state in CeFe4Sb12 and Ce0.9Fe3CoSb12.
C1 Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Univ Calif Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
RP Gajewski, DA (reprint author), Univ Calif San Diego, Dept Phys, 0360,9500 Gilman Dr, La Jolla, CA 92093 USA.
RI Bauer, Eric/D-7212-2011; Mandrus, David/H-3090-2014
NR 17
TC 100
Z9 100
U1 2
U2 17
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD AUG 10
PY 1998
VL 10
IS 31
BP 6973
EP 6985
DI 10.1088/0953-8984/10/31/013
PG 13
WC Physics, Condensed Matter
SC Physics
GA 110YD
UT WOS:000075408400013
ER
PT J
AU Wells, JD
AF Wells, JD
TI The importance of tau leptons for supersymmetry searches at the Tevatron
SO MODERN PHYSICS LETTERS A
LA English
DT Article
ID FERMILAB TEVATRON; SYMMETRY-BREAKING; COLLIDERS; MODEL
AB Supersymmetry is perhaps most effectively probed at the Tevatron through production and decay of weak gauginos. Most of the analyses of weak gaugino observables require electrons or muons in the final state. However, it is possible that the gauginos will decay primarily to tau leptons, thus complicating the search for supersymmetry. The motivating reasons for high tau multiplicity final states are discussed in three approaches to supersymmetry model building: minimal supergravity, minimal gauge mediated supersymmetry, and more minimal supersymmetry. The concept of "e/mu/tau candidate" is introduced, and an observable with three e/mu/tau candidates is defined in analog to the trilepton observable. The maximum mass reach for supersymmetry is then estimated when gaugino decays to tau leptons have full branching fraction.
C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
RP Wells, JD (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
NR 26
TC 8
Z9 8
U1 0
U2 0
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE
SN 0217-7323
J9 MOD PHYS LETT A
JI Mod. Phys. Lett. A
PD AUG 10
PY 1998
VL 13
IS 24
BP 1923
EP 1930
DI 10.1142/S0217732398002035
PG 8
WC Physics, Nuclear; Physics, Particles & Fields; Physics, Mathematical
SC Physics
GA 113FH
UT WOS:000075539400002
ER
PT J
AU Sakaguchi, A
AF Sakaguchi, A
CA NA44 Collaboration
TI One-, two- and three-particle hadron spectra - Recent results from
CERN/SPS experiment NA44
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID HEAVY-ION COLLISIONS; NUCLEUS-NUCLEUS COLLISIONS; DEUTERON PRODUCTION;
MID-RAPIDITY; PION SOURCE; INTERFEROMETRY; DEPENDENCE; DISTRIBUTIONS;
SPS; EXPANSION
AB Recent results of analyses on hadron spectra from the focusing spectrometer experiment NA44 are presented. One-, two- and three-particle hadron spectra in the mid-rapidity region at CERN/SPS energy have been measured. The m(T) inverse-slopes of proton and anti-proton in collision systems from p+A to Pbi-Pb are discussed. Spectra of deuteron, triton and anti-deuteron are presented, and the flow effect on the composite particle spectra are discussed. The two-particle interferometry analysis is made for the pi(+/-)pi(+/-) and K+K+ correlations in the central Pb+Pb collisions, and the dependences of interferometric parameters on the transverse mass and the multiplicity are discussed.
C1 Osaka Univ, Dept Phys, Toyonaka, Osaka 560, Japan.
LANL, Los Alamos, NM 87545 USA.
CERN, CH-1211 Geneva, Switzerland.
Ohio State Univ, Columbus, OH 43210 USA.
SUNY, Albany, NY USA.
Texas A&M Univ, College Stn, TX 77843 USA.
BNL, Upton, NY USA.
RP Sakaguchi, A (reprint author), Osaka Univ, Dept Phys, Toyonaka, Osaka 560, Japan.
EM sakaguch@phys.sci.osaka-u.ac.jp
NR 43
TC 9
Z9 9
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 103C
EP 114C
DI 10.1016/S0375-9474(98)00403-5
PG 12
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400013
ER
PT J
AU Odyniec, GJ
AF Odyniec, GJ
TI Strangeness production in relativistic nuclear collisions
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID HEAVY-ION COLLISIONS; 200A GEV; ENHANCEMENT; SUPPRESSION; ENERGIES;
MODEL
AB A review of strange particle production in heavy ion collisions from AGS to SPS energies is presented. Implications of the newest developments in understanding the collision dynamics and the role of strange particle production in the search for a new phase of matter; in both experimental and theoretical sectors, are discussed.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Odyniec, GJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM G_ODYNIEC@LBL.GOV
NR 51
TC 16
Z9 16
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 135C
EP 146C
DI 10.1016/S0375-9474(98)00408-4
PG 12
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400016
ER
PT J
AU Wyslouch, B
AF Wyslouch, B
CA WA98 Collaboration
TI Recent results on Pb+Pb collisions at 158 AGeV from the WA98 experiment
at CERN
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID HEAVY-ION COLLISIONS; ENERGY NUCLEAR COLLISIONS; PHOTONS; PROBES
AB We present recent results obtained with the WA98 experiment at CERN SPS. The experiment consists of large acceptance hadron and photon spectrometers which allow to study many aspects of heavy ion collisions. We use event-by-event measurements of charged and neutral particle multiplicity to establish the limit on the prodution of Disoriented Chiral Condensates. We use the Plastic Ball detector together with a set of tracking chambers to study collective flow. The tracking chambers together with the excellent particle identification allow us to study the production of Delta(++). The high resolution photon calorimeter array allows us to study inclusive photon and pi(0) spectra and search for excess direct photons.
C1 MIT, Cambridge, MA 02139 USA.
Panjab Univ, Chandigarh 160014, India.
Univ Rajasthan, Jaipur 302004, Rajasthan, India.
Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Calcutta 700064, W Bengal, India.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
RRC Kurchatov, RU-123182 Moscow, Russia.
Joint Nucl Res Inst, RU-141980 Dubna, Russia.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Univ Jammu, Jammu 180001, India.
Univ Munster, D-48149 Munster, Germany.
Ecole Mines, SUBATECH, Nantes, France.
Gesell Schwerionenforsch GmbH, D-64220 Darmstadt, Germany.
Univ Utrecht, NIKHEF, NL-3508 TA Utrecht, Netherlands.
Lund Univ, S-22100 Lund, Sweden.
Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
Nucl Res Inst, CZ-25068 Rez, Czech Republic.
Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands.
Inst Nucl Studies, PL-00681 Warsaw, Poland.
Inst Phys, Bhubaneswar 751005, Orissa, India.
Univ Tennessee, Knoxville, TN 37966 USA.
RP Wyslouch, B (reprint author), MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM Wyslouch@mit.edu
OI Vos, Marcel/0000-0001-8474-5357
NR 18
TC 3
Z9 3
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 147C
EP 158C
DI 10.1016/S0375-9474(98)00409-6
PG 12
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400017
ER
PT J
AU Pang, Y
AF Pang, Y
TI Event generator overview
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; MONTE-CARLO;
HADRONIC-INTERACTIONS; AA COLLISIONS; HIGH-ENERGIES; MODEL; CASCADE;
DYNAMICS; PA
AB Due to their ability to provide detailed and quantitative predictions, the event generators have become an important part of studying relativistic heavy ion physics and of designing future experiments. In this talk, I will briefly summarize recent progress in developing event generators for the relativistic heavy ion collisions.
C1 Columbia Univ, Dept Phys, New York, NY 10027 USA.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Pang, Y (reprint author), Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA.
EM pang@rhic.phys.columbia.edu
NR 36
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 AUG 10
PY 1998
VL 638
IS 1-2
BP 219C
EP 230C
DI 10.1016/S0375-9474(98)00415-1
PG 12
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400023
ER
PT J
AU Glendenning, NK
AF Glendenning, NK
TI Pulsar signal of deconfinement
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID STARS
AB A solitary millisecond pulsar, if near the mass limit, and undergoing a phase transition, either first or second order, provided the transition is to a substantially more compressible phase, will emit a blatantly obvious signal-spontaneous spin-up, Normally a pulsar spins down by angular momentum loss to radiation. The signal is trivial to detect and is estimated to be "on" for 1/50 of the spin-down era of millisecond pulsars. Presently about 25 solitary millisecond pulsars are known. The phenomenon is analogous to "backbending" observed in high spin nuclei in the 1970's.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA.
RP Glendenning, NK (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, MS 70A-3307, Berkeley, CA 94720 USA.
NR 14
TC 5
Z9 5
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 239C
EP 248C
DI 10.1016/S0375-9474(98)00355-8
PG 10
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400025
ER
PT J
AU Kharzeev, D
AF Kharzeev, D
TI Theoretical interpretations of J/psi suppression: A summary
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA;
J-PSI-SUPPRESSION; NON-TOPOLOGICAL SOLITONS; HADRONIC MATTER; CHARMONIUM
SUPPRESSION; PB COLLISIONS; PHOTOPRODUCTION; ANNIHILATION
AB The strong "anomalous" J/psi suppression observed recently by the NA50 Collaboration at CERN SPS has attracted considerable attention. Is it the first signature of a long-awaited quark-gluon plasma, or just a peculiar combination of "conventional" effects acting together to produce the puzzling pattern observed experimentally? This talk is an attempt to summarize the theoretical explanations proposed during the last two years.
C1 Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA.
RP Kharzeev, D (reprint author), Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA.
NR 66
TC 40
Z9 40
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 279C
EP 290C
DI 10.1016/S0375-9474(98)00366-2
PG 12
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400028
ER
PT J
AU Wang, XN
AF Wang, XN
TI Highlight of the parallel session on QCD
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID HADRONIC SCATTERING; POWER CORRECTIONS; SUPERCONDUCTIVITY;
EQUILIBRATION; COLLISIONS
AB I will give a critical review of the parallel session on QCD and the related talks in the Quark Matter'97 meeting.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Wang, XN (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, MS 70A-3307, Berkeley, CA 94720 USA.
NR 15
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 379C
EP 384C
DI 10.1016/S0375-9474(98)00387-X
PG 6
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400038
ER
PT J
AU Vance, SE
Gyulassy, M
Wang, XN
AF Vance, SE
Gyulassy, M
Wang, XN
TI Baryon junction stopping at the SPS and RHIC via HIJING/B
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID COLLISIONS; MODEL; ENERGIES; NUCLEON; NUMBER
AB Baryon stopping at the SPS and RHIC energies is calculated by introducing a new baryon junction mechanism into HIJING. The exchange of a baryon junction, according to Regge phenomenology, leads to a cosh[(y - y(CM))/2] rapidity dependence and all 1/(4)root s energy dependence of the inclusive baryon cross section. This baryon junction dynamics also leads naturally to enhanced p(T) broadening in pA and AA together with enhanced mid-rapidity hyperon production.
C1 Columbia Univ, Dept Phys, New York, NY 10027 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Vance, SE (reprint author), Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA.
EM svance@nt1.phys.columbia.edu; gyulassy@ntl.phys.columbia.edu;
fqwang@1bl.gov
NR 23
TC 11
Z9 11
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 395C
EP 398C
DI 10.1016/S0375-9474(98)00394-7
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400041
ER
PT J
AU Seto, R
AF Seto, R
CA E917 Collaboration
TI An excitation function at the AGS: E917 - Probing the dynamics of heavy
ion collisions
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
AB Particle yields and spectra for kaons, pions and protons have been measured as a function of beam energy in Au-Au collisions at the AGS. The energy dependence of the yields indicates that increased beam energy leads primarily to an increase in particle production with a slight increase in transverse momentum. The measured < m(T) > distributions have been fit to a simple model which assumes a thermal distribution with an additional term proportional to the particle mass. This additional term can be attributed to collective expansion.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
RP Seto, R (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM richard.seto@UCR.EDU
RI seto, richard/G-8467-2011; Cumming, James/I-3358-2013;
OI Cumming, James/0000-0001-6930-0958; Ogilvie, Craig/0000-0002-5188-5123;
Holzman, Burt/0000-0001-5235-6314; Chang, Wen-Chen/0000-0002-1695-7830
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 AUG 10
PY 1998
VL 638
IS 1-2
BP 407C
EP 410C
DI 10.1016/S0375-9474(98)00399-6
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400044
ER
PT J
AU Kaneta, M
AF Kaneta, M
CA NA44 Collaboration
TI Kaon and proton ratios from central Pb+Pb collisions at the CERN SPS
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID NUCLEUS-NUCLEUS COLLISIONS; FREEZE-OUT; EQUILIBRATION; STRANGENESS
AB K-/K+ and (p) over bar/p ratios measured in 158 A.GeV Pb+Pb collisions are shown as a function of transverse momentum P-T and centrality in top 8.5% central region. Little centrality dependence of the K-/K+ and (p) over bar/p ratios is observed. The transverse mass m(T) distribution anti dN/dy of K+, K-, p and (p) over bar around mid-rapidity are obtained. The temperature T-ch and the chemical potentials for both light and strange quarks (mu(q),mu(s)) at chemical freeze-out are determined by applying simple thermodynamical model to the present data. The resultant mu(q),mu(s) and T-ch are compared with those obtained from similar analysis of SPS S+A and AGS Si+A data. The chemical freeze-out temperature T-ch at CERN energies is higher than thermal freeze-out temperature T-fo which is extracted from m(T) distribution of charged hadrons. At AGS energies T-ch is close to T-fo.
C1 Hiroshima Univ, Dept Phys, Higashihiroshima 7390046, Japan.
CERN, CH-1211 Geneva 23, Switzerland.
SUNY Stony Brook, Stony Brook, NY USA.
Texas A&M Univ, College Stn, TX 77843 USA.
Brookhaven Natl Lab, Upton, NY 11973 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Columbia Univ, New York, NY 10027 USA.
Univ Nantes, F-44035 Nantes, France.
Hiroshima Univ, Hiroshima 730, Japan.
Rudjer Boskovic Inst, Zagreb, Croatia.
RP Kaneta, M (reprint author), Hiroshima Univ, Dept Phys, Kagamiyama 1-3-1, Higashihiroshima 7390046, Japan.
OI Gaardhoje, Jens-Jorgen/0000-0001-6122-4698
NR 8
TC 16
Z9 16
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 419C
EP 422C
DI 10.1016/S0375-9474(98)00340-6
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400047
ER
PT J
AU Randrup, J
AF Randrup, J
TI Transport treatment of DCC dynamics
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID LINEAR SIGMA-MODEL
AB The field dynamics given by the linear a model is recast in terms of medium-dependent quasi-particles moving consistently with the evolving local order parameter, yielding a transport framework that is more suitable for simulations of realistic collision scenarios.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Randrup, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, 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 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 439C
EP 442C
DI 10.1016/S0375-9474(98)00354-6
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400052
ER
PT J
AU Koch, V
Randrup, J
Wang, XN
Kluger, Y
AF Koch, V
Randrup, J
Wang, XN
Kluger, Y
TI Dileptons from disoriented chiral condensates
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID COLLISIONS; DCC
AB Disoriented chiral condensates are manifested as long-wavelength pionic oscillations and their interaction with the thermal environment can be a significant source of dileptons. We calculate the yield of such dilepton production within the linear sigma model. We find that the dilepton yield with invariant mass near and below 2m(pi) due to the soft pion modes can be up to two orders of magnitude larger than the corresponding equilibrium yield. We conclude with a discussion on how this enhancement can be detected by present dilepton experiments.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Koch, V (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
NR 9
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 447C
EP 450C
DI 10.1016/S0375-9474(98)00362-5
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400054
ER
PT J
AU Liu, H
AF Liu, H
CA E895 Collaboration
TI Collective flow in Au+Au collisions between 2-8A GeV at AGS
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID RELATIVISTIC NUCLEAR COLLISIONS; TRANSVERSE-MOMENTUM; SIGNATURE
AB The E895 collaboration has undertaken a systematic and exclusive study of Au+Au collisions between 2-8A GeV. We present preliminary results on collective flow observables as a function of beam energy. Data are compared with theoretical predictions.
C1 Kent State Univ, Dept Phys, Kent, OH 44242 USA.
Univ Calif Davis, Davis, CA 95616 USA.
Ohio State Univ, Columbus, OH 43210 USA.
SUNY Stony Brook, Stony Brook, NY 11794 USA.
Purdue, W Lafayette, IN USA.
CMU, Geneva, Switzerland.
BNL, Upton, NY USA.
Columbia, New York, NY 10027 USA.
Harbin Inst Technol, Harbin, Peoples R China.
St Marys, Auckland, New Zealand.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Liu, H (reprint author), Kent State Univ, Dept Phys, Kent, OH 44242 USA.
NR 12
TC 23
Z9 23
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 451C
EP 454C
DI 10.1016/S0375-9474(98)00365-0
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400055
ER
PT J
AU Voloshin, SA
AF Voloshin, SA
CA E877 Collaboration
TI Anisotropic flow of identified particles in Au+Au collisions at AGS
energy
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
AB Anisotropic flow of protons, pi(+/-), K+, deuterons, tritons, He-3, and He-4 is analyzed as a function of transverse momentum for different centralities of the collision.
C1 Univ Heidelberg, Inst Phys, Heidelberg, Germany.
BNL, Upton, NY USA.
GSI Darmstadt, Darmstadt, Germany.
INEL, Idaho Falls, ID USA.
McGill Univ, Montreal, PQ H3A 2T5, Canada.
Univ Pittsburgh, Pittsburgh, PA 15260 USA.
SUNY Stony Brook, Stony Brook, NY 11794 USA.
Univ Sao Paulo, Sao Paulo, Brazil.
Wayne State Univ, Detroit, MI 48202 USA.
RP Voloshin, SA (reprint author), Univ Heidelberg, Inst Phys, Philosophenweg 12, Heidelberg, Germany.
RI Voloshin, Sergei/I-4122-2013;
OI Chang, Wen-Chen/0000-0002-1695-7830
NR 6
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 AUG 10
PY 1998
VL 638
IS 1-2
BP 455C
EP 458C
DI 10.1016/S0375-9474(98)00369-8
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400056
ER
PT J
AU Nishimura, S
AF Nishimura, S
CA WA98 Collaboration
TI Collective flow in 158AGeV Pb+Pb collisions
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID HEAVY-ION COLLISIONS; NUCLEAR COLLISIONS
AB Anisotropic transverse flow has been studied with a magnetic spectrometer at mid-rapidity and the Plastic Ball detector at target rapidity in the WA98 experiment. Our preliminary results show the existence of directed and elliptic flow in semi-central Pb+Pb collisions. The magnitude of the directed flow is found to be significantly smaller than those observed at the AGS energies.
C1 Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
Panjab Univ, Chandigarh 160014, India.
Univ Rajasthan, Jaipur 302004, Rajasthan, India.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Kurchatov, Moscow, Russia.
JINR Dubna, Dubna, Russia.
ORNL, Oak Ridge, TN USA.
Univ Jammu, Jammu 180004, India.
Univ Munster, Munster, Germany.
GSI Darmstadt, Darmstadt, Germany.
NIKHEF H, Amsterdam, Netherlands.
Univ Lund, S-22100 Lund, Sweden.
NPI, Prague, Czech Republic.
KVI, Groningen, Netherlands.
MIT, Cambridge, MA 02139 USA.
Univ Tennessee, Knoxville, TN 37996 USA.
Univ Karlsruhe, Karlsruhe, Germany.
RP Nishimura, S (reprint author), Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
NR 14
TC 11
Z9 11
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 459C
EP 462C
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400057
ER
PT J
AU Poskanzer, AM
AF Poskanzer, AM
CA NA49 Collaboration
TI Directed and elliptic flow in 158 GeV/nucleon Pb+Pb collisions
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
AB The directed and elliptic flow of protons and charged pions has been observed from the semi-central collisions of a 158 GeV/nucleon Pb beam with a Pb target. The rapidity and transverse momentum dependence of the flow has been measured. The directed flow of the pions is opposite to that of the protons at high rapidity but both exhibit negative flow at low p(t). The elliptic flow of both is fairly independent of rapidity but rises with p(t).
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Poskanzer, AM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 3
TC 9
Z9 9
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 463C
EP 466C
DI 10.1016/S0375-9474(98)00379-0
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400058
ER
PT J
AU Porter, RJ
Beedoe, S
Bossingham, R
Bougteb, M
Christie, WB
Hallman, T
Huang, HZ
Igo, G
Kirk, P
Krebs, G
Letessier-Selvon, A
Madansky, L
Manso, F
Matis, HS
Miller, J
Naudet, C
Prunet, M
Roche, G
Schroeder, LS
Seidl, P
Wang, ZF
Welsh, RC
Wilson, WK
Yegneswaran, A
AF Porter, RJ
Beedoe, S
Bossingham, R
Bougteb, M
Christie, WB
Hallman, T
Huang, HZ
Igo, G
Kirk, P
Krebs, G
Letessier-Selvon, A
Madansky, L
Manso, F
Matis, HS
Miller, J
Naudet, C
Prunet, M
Roche, G
Schroeder, LS
Seidl, P
Wang, ZF
Welsh, RC
Wilson, WK
Yegneswaran, A
TI Dielectron production in A-A reactions at 1.0 A center dot GeV
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID HEAVY-ION REACTIONS; NUCLEUS COLLISIONS; CA+CA COLLISIONS; ENERGIES; ETA
AB Measured dielectron cross sections from Ca+Ca, C+C, He+Ca, and d+Ca reactions at 1.0 A.GeV are presented. The invariant mass spectrum from Ca+Ca collisions is discussed and compared with results from model calculations. The four A-A measurements are used to explore the physics content of the e(+)e(-) signal that is not explained by the models.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
Univ Blaise Pascal, IN2P3, F-63177 Clermont Ferrand, France.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Louisiana State Univ, Baton Rouge, LA 70803 USA.
Wayne State Univ, Detroit, MI 48201 USA.
RP Porter, RJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 9
TC 1
Z9 1
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 499C
EP 502C
DI 10.1016/S0375-9474(98)00341-8
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400067
ER
PT J
AU Spieles, C
Gerland, L
Hammon, N
Bleicher, M
Bass, SA
Stocker, H
Greiner, W
Lourenco, C
Vogt, R
AF Spieles, C
Gerland, L
Hammon, N
Bleicher, M
Bass, SA
Stocker, H
Greiner, W
Lourenco, C
Vogt, R
TI Intermediate mass dileptons from secondary Drell-Yan processes
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID COLLISIONS
AB Recent reports on enhancements of intermediate and high mass muon pairs produced in heavy ion collisions have attracted much attention. To gain a better understanding of the content of the dilepton continuum, we study Drell-Yan production from secondary hadron interactions in nucleus-nucleus collisions. We show that meson-baryon interactions can be an important source of m similar to 2 GeV dileptons. We also discuss the effects of preresonance parton collisions.
C1 Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany.
CERN, PPE, CH-1211 Geneva 23, Switzerland.
LBNL, Div Nucl Sci, Berkeley, CA 94720 USA.
Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RP Spieles, C (reprint author), Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany.
EM spiels@th.physik.uni-frankfurt.de; hammon@th.physik.uni-frankfurt.de;
bleicher@th.physik.uni-frankfurt; CARLOS.LOURENCO@CERN.CH; vogt@LBL.GOV
RI Bleicher, Marcus/A-2758-2010; Stoecker, Horst/D-6173-2013
OI Stoecker, Horst/0000-0002-3282-3664
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
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 507C
EP 510C
DI 10.1016/S0375-9474(98)00345-5
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400069
ER
PT J
AU Vogt, R
AF Vogt, R
TI What causes psi suppression in Pb+Pb collisions?
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
ID QUARK-GLUON PLASMA; CHARMONIUM SUPPRESSION; NUCLEAR COLLISIONS;
GAUGE-THEORY; J/PSI; LHC
AB A reexamination of hadronic comover scattering indicates that this mechanism cannot explain the observed psi suppression in Pb+Pb interactions. The possibility of quark-gluon plasma formation is therefore considered. Implications for RHIC and LHC are also discussed.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RP Vogt, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
EM vogt@LBL.GOV
NR 23
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 AUG 10
PY 1998
VL 638
IS 1-2
BP 543C
EP 546C
DI 10.1016/S0375-9474(98)00370-4
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400078
ER
PT J
AU Geiger, K
AF Geiger, K
TI Parton cascade description of heavy-ion collisions at CERN
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
AB There seems to be a general consensus now that a first glimpse of a QGP-like effect has become visible in the beautiful NA50 data on J/psi production and the 'anomalous supression' phenomenon. On the other hand, it is still widely believed that the dynamics of heavy-ion collisions at CERN SPS energy is predominantly governed by soft, non-perturbative physics. This is ironic: after all, it is unlikely that a QGP could be formed if the underlying dynamics were essentially soft, rather than that it requires intense quark-gluon production with sufficient cascade-like reinteractions which drive the matter to large density and equilibrium. Therefore, I advocate in this contribution that for ultra-relativistic nucleus-nucleus collisions a description based on the pQCD interactions and cascade evolution of involved partons can and should be used, owing to the claim that short-range parton interactions play an important role at sufficiently high beam energies, including CERN energy root s similar or equal to 20 A GeV. Here mini-jet production which liberates of quarks and gluons cannot be considered as an isolated rare phenomenon, but can occur quite copiously and may lead to complex multiple cascade-type processes.
C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Geiger, K (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
NR 10
TC 7
Z9 7
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 551C
EP 554C
DI 10.1016/S0375-9474(98)00377-7
PG 4
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400080
ER
PT J
AU Wieman, H
Adams, DL
Added, N
Agakishiev, H
Akimenko, SA
Aluyshin, A
Aluyshin, M
Amelin, N
Anderson, B
Anderson, G
Aprahamian, A
Arestov, YI
Aslanyan, P
Avdeichikov, V
Averichev, G
Bacher, A
Badalian, R
Baldwin, A
Barish, K
Batourine, V
Belikov, NI
Bellwied, R
Belousov, V
Bennett, S
Best, D
Bichsel, H
Bielecki, J
Bieser, F
Biswas, NN
Bland, L
Blyth, C
Bonner, BE
Bossingham, R
Brady, FP
Braithwaite, W
Brown, C
Brown, RL
Budilov, V
Caines, H
Cameron, J
Carlin, N
Carroll, J
Cebra, D
Chalyguine, A
Chance, J
Chen, W
Chernenko, S
Cherney, M
Chikanian, A
Chrin, J
Christie, W
Chujko, B
Consiglio, C
Cooper, G
Cormier, TM
Cramer, J
Crawford, HJ
Davidenko, AM
Das, A
Dawson, JW
Dereschikov, AA
DeWeerd, A
Didenko, L
Dominik, W
Draper, JE
Duck, I
Edwards, WR
Eckardt, V
Emelianov, V
Engelage, JM
Eppley, G
Eremeev, R
Erin, V
Etkin, A
Fachini, P
Fadeev, N
Faine, V
Fateev, O
Feshchenko, A
Fisyak, Y
Foley, KJ
Ford, CW
Gagunashvili, N
Garg, U
Gavrichtchouk, O
Gazdzicki, M
Ghazikhanian, V
Gilkes, M
Grachov, A
Greiner, D
Greiner, L
Grigoriev, V
Guarino, VJ
Gushin, E
Haberichter, WN
Hackenburg, RW
Hall, J
Hallman, TJ
Harris, J
Heppelmann, S
Hill, DA
Hill, N
Hirsch, A
Hjort, E
Hoffmann, J
Huang, H
Humanic, T
Igo, GJ
Ioukaev, A
Jacobs, P
Jacobs, W
Jared, R
Jensen, P
Jones, P
Judd, E
Kadija, K
Kaplan, M
Kaplin, V
Karakash, A
Karev, A
Karol, P
Kasprzyk, T
Keane, D
Kinder-Geiger, K
Klein, S
Kolobashkina, L
Kolomyichenko, A
Komisarcik, K
Konstantinov, A
Kossarev, I
Kotchenda, L
Kotov, I
Kouzmine, N
Kovalenko, A
Kramer, M
Kravtsov, P
Krivokhizhin, V
Kunde, G
Kutuev, R
Kuznetsov, A
Kwiatkowski, K
Ladygin, V
Lasiuk, B
Lebedev, A
LeCompte, T
LeVine, MJ
Li, Q
Lisa, M
Ljubicic, A
Llope, W
Longacre, RS
Love, WA
Lynn, D
Madansky, L
Majka, R
Margetis, S
Marx, J
Matheus, R
Matis, HS
Matulenko, Y
Matushevsky, E
McShane, TS
Medvedev, K
Mekhdiev, R
Meschanin, A
Middlekamp, P
Miller, B
Milosevich, Z
Minaev, N
Mitchell, J
Mitsyn, V
Moore, F
Muresan, L
Muresan, R
Musulmanbekov, J
Mutchler, GS
Mysnick, A
Nann, H
Nelson, J
Nevski, P
Nikitin, V
Nikonov, E
Nomokonov, P
Nurushev, SB
Nystrand, J
Odintsov, V
Odyniec, G
Ogawa, A
Ogilivie, C
Olson, D
Oltchak, A
Ososkov, G
Ott, G
Paic, G
Pandey, S
Panebratsev, Y
Panitkin, S
Pavlinov, A
Pavluk, A
Pawlak, T
Pentia, M
Peryt, W
Peshekhonov, D
Peshekhonov, V
Pilipenko, D
Piskunov, N
Platner, E
Pluta, J
Porile, N
Poskanzer, AM
Price, L
Prindle, D
Protrebenikova, E
Pruneau, C
Rai, G
Ray, L
Razin, S
Renfordt, RE
Ridiger, A
Riley, P
Rinckel, T
Riso, J
Ritter, HG
Roberts, JB
Roehrich, D
Rollefson, A
Romero, JL
Roufanov, I
Runco, M
Rykov, V
Sakrejda, I
Sandweiss, J
Saulys, AC
Savin, I
Schafer, E
Schambach, J
Scharenberg, RP
Schmitz, N
Schroeder, LS
Schulz, M
Sedlmeir, J
Seger, J
Seliverstov, D
Seyboth, P
Shabunov, A
Shafranov, M
Shafranova, M
Shalnov, A
Shestermanov, K
Shimanskiy, S
Skoro, G
Slaughter, J
Slavin, N
Smirnoff, N
Smirnov, G
Smykov, L
Soloviev, L
Somov, S
Sowinski, J
Spinka, HM
Srivastava, B
Stephenson, E
Stock, R
Stone, N
Strikhanov, M
Stringfellow, B
Strbele, H
Sugarbaker, E
Sustich, A
Symons, TJ
Szanto, E
de Toledo, AS
Thomas, J
Tikhonov, V
Trainor, T
Trentalange, S
Tokarev, M
Trofimov, V
Tsay, O
Tull, C
Turner, K
Tustonic, T
Ullrich, T
Underwood, DG
Usubov, Z
VanderMolen, S
Vanyashin, A
Vasendina, V
Vasiliev, AN
Vasiliev, V
Vigdor, S
Viola, V
Vorozhtsov, S
Vranic, D
Wang, F
Ward, H
Watson, J
Weerasundara, D
Wells, R
Wenaus, T
Westfall, G
Whitten, C
Wilson, K
Wissink, S
Wold, D
Wood, L
Xu, N
Yepes, P
Yokosawa, A
Yurevich, V
Zanevsky, Y
Zhang, W
Zhidkov, N
Zhiltsov, V
Zoulkarneev, R
AF Wieman, H
Adams, DL
Added, N
Agakishiev, H
Akimenko, SA
Aluyshin, A
Aluyshin, M
Amelin, N
Anderson, B
Anderson, G
Aprahamian, A
Arestov, YI
Aslanyan, P
Avdeichikov, V
Averichev, G
Bacher, A
Badalian, R
Baldwin, A
Barish, K
Batourine, V
Belikov, NI
Bellwied, R
Belousov, V
Bennett, S
Best, D
Bichsel, H
Bielecki, J
Bieser, F
Biswas, NN
Bland, L
Blyth, C
Bonner, BE
Bossingham, R
Brady, FP
Braithwaite, W
Brown, C
Brown, RL
Budilov, V
Caines, H
Cameron, J
Carlin, N
Carroll, J
Cebra, D
Chalyguine, A
Chance, J
Chen, W
Chernenko, S
Cherney, M
Chikanian, A
Chrin, J
Christie, W
Chujko, B
Consiglio, C
Cooper, G
Cormier, TM
Cramer, J
Crawford, HJ
Davidenko, AM
Das, A
Dawson, JW
Dereschikov, AA
DeWeerd, A
Didenko, L
Dominik, W
Draper, JE
Duck, I
Edwards, WR
Eckardt, V
Emelianov, V
Engelage, JM
Eppley, G
Eremeev, R
Erin, V
Etkin, A
Fachini, P
Fadeev, N
Faine, V
Fateev, O
Feshchenko, A
Fisyak, Y
Foley, KJ
Ford, CW
Gagunashvili, N
Garg, U
Gavrichtchouk, O
Gazdzicki, M
Ghazikhanian, V
Gilkes, M
Grachov, A
Greiner, D
Greiner, L
Grigoriev, V
Guarino, VJ
Gushin, E
Haberichter, WN
Hackenburg, RW
Hall, J
Hallman, TJ
Harris, J
Heppelmann, S
Hill, DA
Hill, N
Hirsch, A
Hjort, E
Hoffmann, J
Huang, H
Humanic, T
Igo, GJ
Ioukaev, A
Jacobs, P
Jacobs, W
Jared, R
Jensen, P
Jones, P
Judd, E
Kadija, K
Kaplan, M
Kaplin, V
Karakash, A
Karev, A
Karol, P
Kasprzyk, T
Keane, D
Kinder-Geiger, K
Klein, S
Kolobashkina, L
Kolomyichenko, A
Komisarcik, K
Konstantinov, A
Kossarev, I
Kotchenda, L
Kotov, I
Kouzmine, N
Kovalenko, A
Kramer, M
Kravtsov, P
Krivokhizhin, V
Kunde, G
Kutuev, R
Kuznetsov, A
Kwiatkowski, K
Ladygin, V
Lasiuk, B
Lebedev, A
LeCompte, T
LeVine, MJ
Li, Q
Lisa, M
Ljubicic, A
Llope, W
Longacre, RS
Love, WA
Lynn, D
Madansky, L
Majka, R
Margetis, S
Marx, J
Matheus, R
Matis, HS
Matulenko, Y
Matushevsky, E
McShane, TS
Medvedev, K
Mekhdiev, R
Meschanin, A
Middlekamp, P
Miller, B
Milosevich, Z
Minaev, N
Mitchell, J
Mitsyn, V
Moore, F
Muresan, L
Muresan, R
Musulmanbekov, J
Mutchler, GS
Mysnick, A
Nann, H
Nelson, J
Nevski, P
Nikitin, V
Nikonov, E
Nomokonov, P
Nurushev, SB
Nystrand, J
Odintsov, V
Odyniec, G
Ogawa, A
Ogilivie, C
Olson, D
Oltchak, A
Ososkov, G
Ott, G
Paic, G
Pandey, S
Panebratsev, Y
Panitkin, S
Pavlinov, A
Pavluk, A
Pawlak, T
Pentia, M
Peryt, W
Peshekhonov, D
Peshekhonov, V
Pilipenko, D
Piskunov, N
Platner, E
Pluta, J
Porile, N
Poskanzer, AM
Price, L
Prindle, D
Protrebenikova, E
Pruneau, C
Rai, G
Ray, L
Razin, S
Renfordt, RE
Ridiger, A
Riley, P
Rinckel, T
Riso, J
Ritter, HG
Roberts, JB
Roehrich, D
Rollefson, A
Romero, JL
Roufanov, I
Runco, M
Rykov, V
Sakrejda, I
Sandweiss, J
Saulys, AC
Savin, I
Schafer, E
Schambach, J
Scharenberg, RP
Schmitz, N
Schroeder, LS
Schulz, M
Sedlmeir, J
Seger, J
Seliverstov, D
Seyboth, P
Shabunov, A
Shafranov, M
Shafranova, M
Shalnov, A
Shestermanov, K
Shimanskiy, S
Skoro, G
Slaughter, J
Slavin, N
Smirnoff, N
Smirnov, G
Smykov, L
Soloviev, L
Somov, S
Sowinski, J
Spinka, HM
Srivastava, B
Stephenson, E
Stock, R
Stone, N
Strikhanov, M
Stringfellow, B
Strbele, H
Sugarbaker, E
Sustich, A
Symons, TJ
Szanto, E
de Toledo, AS
Thomas, J
Tikhonov, V
Trainor, T
Trentalange, S
Tokarev, M
Trofimov, V
Tsay, O
Tull, C
Turner, K
Tustonic, T
Ullrich, T
Underwood, DG
Usubov, Z
VanderMolen, S
Vanyashin, A
Vasendina, V
Vasiliev, AN
Vasiliev, V
Vigdor, S
Viola, V
Vorozhtsov, S
Vranic, D
Wang, F
Ward, H
Watson, J
Weerasundara, D
Wells, R
Wenaus, T
Westfall, G
Whitten, C
Wilson, K
Wissink, S
Wold, D
Wood, L
Xu, N
Yepes, P
Yokosawa, A
Yurevich, V
Zanevsky, Y
Zhang, W
Zhidkov, N
Zhiltsov, V
Zoulkarneev, R
TI Recent developments on the star detector system at RHIC
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
AB A progress report is given for the various components of the STAR detector system. We report on the recent developments in the detector proto-typing and construction, with an emphasis on the main TPC, recent TPC cosmic ray testing and shipping to Brookhaven National Laboratory.
C1 Univ Arkansas, Little Rock, AR 72204 USA.
Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Brookhaven Natl Lab, Upton, NY 11973 USA.
Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Univ Calif Davis, Davis, CA USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Creighton Univ, Omaha, NE 68178 USA.
JINR Dubna, Lab High Energy, Dubna, Russia.
JINR Dubna, Particle Phys Lab, Dubna, Russia.
Univ Frankfurt, D-6000 Frankfurt, Germany.
Indiana Univ, Bloomington, IN 47405 USA.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Kent State Univ, Kent, OH USA.
MIT, Cambridge, MA 02139 USA.
Max Planck Inst Phys, D-80805 Munich, Germany.
Michigan State Univ, E Lansing, MI 48824 USA.
Moscow Phys Engn Inst, Moscow, Russia.
Univ Notre Dame, Notre Dame, IN 46556 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Penn State Univ, University Pk, PA 16802 USA.
Inst High Energy Phys, Protvino, Russia.
Purdue Univ, W Lafayette, IN 47907 USA.
Rice Univ, Houston, TX 77251 USA.
Univ Sao Paulo, BR-05508 Sao Paulo, Brazil.
Univ Texas, Austin, TX 78712 USA.
Univ Warsaw, PL-00325 Warsaw, Poland.
Warsaw Univ Technol, PL-00661 Warsaw, Poland.
Univ Washington, Seattle, WA 98195 USA.
Wayne State Univ, Detroit, MI 48202 USA.
Yale Univ, New Haven, CT 06520 USA.
Rudjer Boskovic Inst, Zagreb, Croatia.
RP Wieman, H (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RI Skoro, Goran/F-3642-2010; Muresan, Raluca-Anca/C-3725-2011; Pentia,
Mircea/B-2780-2011; Carlin Filho, Nelson/C-2187-2012; Vanyashin,
Aleksandr/H-7796-2013; Skoro, Goran/P-1229-2014; Strikhanov,
Mikhail/P-7393-2014; Added, Nemitala/M-8204-2015;
OI Thomas, James/0000-0002-6256-4536; Vanyashin,
Aleksandr/0000-0002-0367-5666; Skoro, Goran/0000-0001-7745-9045;
Strikhanov, Mikhail/0000-0003-2586-0405; Fisyak,
Yuri/0000-0002-3151-8377; Musulmanbekov, Genis/0000-0002-3352-5044
NR 7
TC 2
Z9 2
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 559C
EP 563C
DI 10.1016/S0375-9474(98)00385-6
PG 5
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400082
ER
PT J
AU Morrison, DP
AF Morrison, DP
CA PHENIX Collaboration
TI The PHENIX experiment at RHIC
SO NUCLEAR PHYSICS A
LA English
DT Article; Proceedings Paper
CT 13th International Conference on Ultra-Relativistic Nucleus-Nucleus
Collisions (Quark Matter 97)
CY DEC 01-05, 1997
CL UNIV TSUKUBA, IBARAKI, JAPAN
SP Yamada Sci Fdn
HO UNIV TSUKUBA
AB The physics emphases of the PHENIX collaboration and the design and current status of the PHENIX detector are discussed. The plan of the collaboration for making the most effective use of the available luminosity in the first years of RHIC operation is also presented.(1)
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Morrison, DP (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
RI Durum, Artur/C-3027-2014; Hayano, Ryugo/F-7889-2012; Taketani,
Atsushi/E-1803-2017;
OI Hayano, Ryugo/0000-0002-1214-7806; Taketani,
Atsushi/0000-0002-4776-2315; Read, Kenneth/0000-0002-3358-7667;
Tannenbaum, Michael/0000-0002-8840-5314; Thomas,
James/0000-0002-6256-4536; Chang, Wen-Chen/0000-0002-1695-7830
NR 1
TC 46
Z9 46
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD AUG 10
PY 1998
VL 638
IS 1-2
BP 565C
EP 569C
DI 10.1016/S0375-9474(98)00390-X
PG 5
WC Physics, Nuclear
SC Physics
GA 117VB
UT WOS:000075802400083
ER
PT J
AU de Boer, J
Hori, K
Ooguri, H
AF de Boer, J
Hori, K
Ooguri, H
TI Membrane scattering in curved space with M-momentum transfer
SO NUCLEAR PHYSICS B
LA English
DT Article
ID QUANTUM-MECHANICS; DYNAMICS
AB We study membrane scattering in a curved space with non-zero M-momentum pit transfer. In the low-energy short-distance region, the membrane dynamics is described by a three-dimensional N = 4 supersymmetric gauge theory. We study an n-instanton process of the gauge theory, corresponding to the exchange of n units of p(11), and compare the result with the scattering amplitude computed in the low-energy long-distance region using supergravity. We find that they behave differently. We show that this result is not in contradiction with the large-N Matrix Theory conjecture, by pointing out that cutoff scales of the supergravity and the gauge theory are complementary to each other. (C) 1998 Published by Elsevier Science B.V.
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA.
RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Ooguri, Hirosi/A-4407-2011;
OI Ooguri, Hirosi/0000-0001-6021-3778
NR 36
TC 4
Z9 4
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0550-3213
EI 1873-1562
J9 NUCL PHYS B
JI Nucl. Phys. B
PD AUG 10
PY 1998
VL 525
IS 1-2
BP 257
EP 283
DI 10.1016/S0550-3213(98)00253-3
PG 27
WC Physics, Particles & Fields
SC Physics
GA 107DV
UT WOS:000075192500012
ER
PT J
AU Logan, J
Chandler, W
AF Logan, J
Chandler, W
TI Incentives needed for foreign participation in China's natural gas
sector
SO OIL & GAS JOURNAL
LA English
DT Article
C1 Pacific NW Natl Lab, Washington, DC USA.
RP Logan, J (reprint author), Pacific NW Natl Lab, Washington, DC USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU PENNWELL PUBL CO ENERGY GROUP
PI TULSA
PA 1421 S SHERIDAN RD PO BOX 1260, TULSA, OK 74101 USA
SN 0030-1388
J9 OIL GAS J
JI Oil Gas J.
PD AUG 10
PY 1998
VL 96
IS 32
BP 50
EP +
PG 6
WC Energy & Fuels; Engineering, Petroleum
SC Energy & Fuels; Engineering
GA 109HG
UT WOS:000075315600016
ER
PT J
AU Park, C
Wong-Ng, W
Cook, LP
Snyder, RL
Sastry, PVPSS
West, AR
AF Park, C
Wong-Ng, W
Cook, LP
Snyder, RL
Sastry, PVPSS
West, AR
TI Melting investigation of Bi2Sr1.9Ca2.1Cu3O10+x by high temperature X-ray
diffraction and quenching
SO PHYSICA C
LA English
DT Article
DE melting; Bi2Sr1.9Ca2.1Cu3O10+x; high temperature x-ray diffraction
(HTXRD); quenching
ID FREE BI2SR2CA2CU3O10 SUPERCONDUCTOR; TEXTURE FORMATION;
PHASE-EQUILIBRIA; SOLID-SOLUTIONS; SYSTEM; TAPES; BI2SR2CACU2OY;
STOICHIOMETRY; STABILITY; BI-2212
AB A combination of in-situ high temperature X-ray (HTXRD), quenching experiments and energy dispersive X-ray spectrometry (EDS) was used to investigate the melting sequence of the high T-c 2223 (Bi:Sr:Ca:Cu) superconductor phase. The occurrence and disappearance of various phases associated with the melting of this phase are discussed for both Ag-free and Ag-containing samples. In both Ag-free and Ag-containing samples, three insulator phases were observed during the melting process with HTXRD. In the Ag-free sample, melting started between 880 degrees C and 890 degrees C. At 890 degrees C, both (Sr,Ca)(14)Cu24O41 and (Ca,Sr)(2)CuO3 were present. The (Sr,Ca)(14)Cu24O41 phase disappeared at about 900 degrees C and (Ca,Sr)(2)CuO3 persisted until approximate to 950 degrees C, at which point (Ca,Sr)O was observed. In the Ag-containing sample, a similar melting sequence was observed except that the initial melting temperature of the 2223 phase was lowered by about 20-30 degrees C. Ag was found to enter the liquid. It appears that this liquid promotes grain growth and preferred orientation. It was found that the melting process of the 2223 phase is similar to that of the 2212 (Bi:Sr:Ca:Cu) phase in that both melt incongruently to strontium calcium cuprates. The quench experiments showed that the 119 x 5/22 x 1 phase was an additional primary phase during melting. The absence of this phase during the HTXRD experiment could be due to the fact that the 119 x 5/22 x 1 grains are denser than the liquid and therefore sink below the surface of the sample. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
NIST, Div Ceram, Gaithersburg, MD 20899 USA.
Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA.
Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA.
Univ Aberdeen, Dept Chem, Aberdeen AB9 2UE, Scotland.
RP Wong-Ng, W (reprint author), Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
RI Yoon, Sejin/F-7637-2013;
OI West, Anthony/0000-0002-5492-2102
NR 43
TC 11
Z9 12
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD AUG 10
PY 1998
VL 304
IS 3-4
BP 265
EP 276
DI 10.1016/S0921-4534(98)00290-1
PG 12
WC Physics, Applied
SC Physics
GA 120YV
UT WOS:000075986200014
ER
PT J
AU Fukuda, Y
Hayakawa, T
Ichihara, E
Inoue, K
Ishihara, K
Ishino, H
Itow, Y
Kajita, T
Kameda, J
Kasuga, S
Kobayashi, K
Kobayashi, Y
Koshio, Y
Martens, K
Miura, M
Nakahata, M
Nakayama, S
Okada, A
Oketa, M
Okumura, K
Ota, M
Sakurai, N
Shiozawa, M
Suzuki, Y
Takeuchi, Y
Totsuka, Y
Yamada, S
Earl, M
Habig, A
Hong, JT
Kearns, E
Kim, SB
Masuzawa, M
Messier, MD
Scholberg, K
Stone, JL
Sulak, LR
Walter, CW
Goldhaber, M
Barszczak, T
Gajewski, W
Halverson, PG
Hsu, J
Kropp, WR
Price, LR
Reines, F
Sobel, HW
Vagins, MR
Ganezer, KS
Keig, WE
Ellsworth, RW
Tasaka, S
Flanagan, JW
Kibayashi, A
Learned, JG
Matsuno, S
Stenger, V
Takemori, D
Ishii, T
Kanzaki, J
Kobayashi, T
Nakamura, K
Nishikawa, K
Oyama, Y
Sakai, A
Sakuda, M
Sasaki, O
Echigo, S
Kohama, M
Suzuki, AT
Haines, TJ
Blaufuss, E
Sanford, R
Svoboda, R
Chen, ML
Conner, Z
Goodman, JA
Sullivan, GW
Mori, M
Hill, J
Jung, CK
Mauger, C
McGrew, C
Sharkey, E
Viren, B
Yanagisawa, C
Doki, W
Ishizuka, T
Kitaguchi, Y
Koga, H
Miyano, K
Okazawa, H
Saji, C
Takahata, M
Kusano, A
Nagashima, Y
Takita, M
Yamaguchi, T
Yoshida, M
Etoh, M
Fujita, K
Hasegawa, A
Hasegawa, T
Hatakeyama, S
Iwamoto, T
Kinebuchi, T
Koga, M
Maruyama, T
Ogawa, H
Suzuki, A
Tsushima, F
Koshiba, M
Nemoto, M
Nishijima, K
Futagami, T
Hayato, Y
Kanaya, Y
Kaneyuki, K
Watanabe, Y
Kielczewska, D
Doyle, R
George, J
Stachyra, A
Wai, L
Wilkes, J
Young, K
AF Fukuda, Y
Hayakawa, T
Ichihara, E
Inoue, K
Ishihara, K
Ishino, H
Itow, Y
Kajita, T
Kameda, J
Kasuga, S
Kobayashi, K
Kobayashi, Y
Koshio, Y
Martens, K
Miura, M
Nakahata, M
Nakayama, S
Okada, A
Oketa, M
Okumura, K
Ota, M
Sakurai, N
Shiozawa, M
Suzuki, Y
Takeuchi, Y
Totsuka, Y
Yamada, S
Earl, M
Habig, A
Hong, JT
Kearns, E
Kim, SB
Masuzawa, M
Messier, MD
Scholberg, K
Stone, JL
Sulak, LR
Walter, CW
Goldhaber, M
Barszczak, T
Gajewski, W
Halverson, PG
Hsu, J
Kropp, WR
Price, LR
Reines, F
Sobel, HW
Vagins, MR
Ganezer, KS
Keig, WE
Ellsworth, RW
Tasaka, S
Flanagan, JW
Kibayashi, A
Learned, JG
Matsuno, S
Stenger, V
Takemori, D
Ishii, T
Kanzaki, J
Kobayashi, T
Nakamura, K
Nishikawa, K
Oyama, Y
Sakai, A
Sakuda, M
Sasaki, O
Echigo, S
Kohama, M
Suzuki, AT
Haines, TJ
Blaufuss, E
Sanford, R
Svoboda, R
Chen, ML
Conner, Z
Goodman, JA
Sullivan, GW
Mori, M
Hill, J
Jung, CK
Mauger, C
McGrew, C
Sharkey, E
Viren, B
Yanagisawa, C
Doki, W
Ishizuka, T
Kitaguchi, Y
Koga, H
Miyano, K
Okazawa, H
Saji, C
Takahata, M
Kusano, A
Nagashima, Y
Takita, M
Yamaguchi, T
Yoshida, M
Etoh, M
Fujita, K
Hasegawa, A
Hasegawa, T
Hatakeyama, S
Iwamoto, T
Kinebuchi, T
Koga, M
Maruyama, T
Ogawa, H
Suzuki, A
Tsushima, F
Koshiba, M
Nemoto, M
Nishijima, K
Futagami, T
Hayato, Y
Kanaya, Y
Kaneyuki, K
Watanabe, Y
Kielczewska, D
Doyle, R
George, J
Stachyra, A
Wai, L
Wilkes, J
Young, K
TI Measurements of the solar neutrino flux from super-Kamiokande's first
300 days
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID REAL-TIME; OSCILLATIONS; DIFFUSION; MODELS; HELIUM
AB The first results of the solar neutrino flux measurement from Super-Kamiokande are presented. The results shown here are obtained from data taken between 31 May 1996, and 23 June 1997. Using our measurement of recoil electrons with energies above 6.5 MeV, we infer the total flux of B-8 solar neutrinos to be 2.42 +/- 0.06(stat)(-0.07)(+0.10)(syst) X 10(6) cm(-2)s(-1) This result is consistent with the Kamiokande measurement and is 36% of the flux predicted by the BP95 solar model. The flux is also measured in 1.5 month subsets and shown to be consistent with a constant rate. [S0031-9007(98)06804-5].
C1 Univ Tokyo, Inst Cosm Ray Res, Tokyo 1888502, Japan.
Boston Univ, Dept Phys, Boston, MA 02215 USA.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
Calif State Univ Dominguez Hills, Dept Phys, Carson, CA 90747 USA.
George Mason Univ, Dept Phys, Fairfax, VA 22030 USA.
Gifu Univ, Dept Phys, Gifu 5011193, Japan.
Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA.
High Energy Accelerator Res Org, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan.
Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan.
Los Alamos Natl Lab, Dept Phys, Los Alamos, NM 87544 USA.
Louisiana State Univ, Dept Phys, Baton Rouge, LA 70803 USA.
Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
Miyagi Univ Educ, Dept Phys, Sendai, Miyagi 9800845, Japan.
SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA.
Niigata Univ, Dept Phys, Niigata 9502181, Japan.
Osaka Univ, Dept Phys, Osaka 5600046, Japan.
Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan.
Univ Tokyo, Tokyo 1130033, Japan.
Tokai Univ, Dept Phys, Kanagawa 2591292, Japan.
Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan.
Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland.
Univ Washington, Dept Phys, Seattle, WA 98195 USA.
RP Univ Tokyo, Inst Cosm Ray Res, Tokyo 1888502, Japan.
RI Takeuchi, Yasuo/A-4310-2011; Kibayashi, Atsuko/K-7327-2015; Nakamura,
Kenzo/F-7174-2010; Sobel, Henry/A-4369-2011; Suzuki,
Yoichiro/F-7542-2010; Martens, Kai/A-4323-2011; Kim,
Soo-Bong/B-7061-2014; Sakurai, Nobuyuki/M-5009-2014; Ishino,
Hirokazu/C-1994-2015; Koshio, Yusuke/C-2847-2015
OI Sakurai, Nobuyuki/0000-0002-1002-217X; Ishino,
Hirokazu/0000-0002-8623-4080; Koshio, Yusuke/0000-0003-0437-8505
NR 22
TC 554
Z9 555
U1 1
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 10
PY 1998
VL 81
IS 6
BP 1158
EP 1162
DI 10.1103/PhysRevLett.81.1158
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 109CL
UT WOS:000075303600006
ER
PT J
AU Albright, CH
Babu, KS
Barr, SM
AF Albright, CH
Babu, KS
Barr, SM
TI Minimality condition and atmospheric neutrino oscillations
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SUPERSYMMETRIC SO(10); UNIFIED THEORIES; LEPTON MASSES; PROTON DECAY;
QUARK; MODEL; RENORMALIZATION; CONSTRUCTION; OPERATOR; RATIO
AB A structure is proposed for the mass matrices of the quarks and leptons that arises in a natural way from the assumption that the breaking of SO(10) gauge symmetry is achieved by the smallest possible set of vacuum expectation values. This structure explains well many features of the observed spectrum of quarks and leptons. It reproduces the Georgi-Jarlskog mass relations and leads to a charm quark mass in reasonable agreement with data. It also predicts a large mixing angle between nu(mu), and nu(tau), as suggested by atmospheric neutrino data. The mixing angles of the electron neutrino are predicted to be small. [S0031-9007(98)06830-6].
C1 No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA.
Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
RP No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
OI Albright, Carl/0000-0002-2252-6359
NR 41
TC 207
Z9 207
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 10
PY 1998
VL 81
IS 6
BP 1167
EP 1170
DI 10.1103/PhysRevLett.81.1167
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 109CL
UT WOS:000075303600008
ER
PT J
AU Prinz, AA
Baggs, R
Ballam, J
Ecklund, S
Fertig, C
Jaros, JA
Kase, K
Kulikov, A
Langeveld, WGJ
Leonard, R
Marvin, T
Nakashima, T
Nelson, WR
Odian, A
Pertsova, M
Putallaz, G
Weinstein, A
AF Prinz, AA
Baggs, R
Ballam, J
Ecklund, S
Fertig, C
Jaros, JA
Kase, K
Kulikov, A
Langeveld, WGJ
Leonard, R
Marvin, T
Nakashima, T
Nelson, WR
Odian, A
Pertsova, M
Putallaz, G
Weinstein, A
TI Search for millicharged particles at SLAC
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ELECTRIC CHARGE NONCONSERVATION; MINICHARGED PARTICLES; EXPERIMENTAL
LIMIT; FREE NEUTRON; NEUTRINOS; MODELS; MATTER; NEUTRALITY
AB Particles with electric charge q less than or equal to 10(-3) e and masses in the range 1-100 MeV/c(2) are not excluded by present experiments. An experiment uniquely suited to the production and detection of such "millicharged" particles has been carried out at SLAG. This experiment is sensitive to the infrequent excitation and ionization of matter expected from the passage of such a particle. Analysis of the data rules out a region of mass and charge, establishing, for example, a 95%-confidence upper limit on electric charge of 4.1 x 10(-5) e for millicharged particles of mass 1 MeV/c(2) and 5.8 x 10(-4) e for mass 100 MeV/c(2). [S0031-9007(98)06790-8].
C1 Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
RP Prinz, AA (reprint author), Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
NR 30
TC 68
Z9 68
U1 0
U2 2
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 10
PY 1998
VL 81
IS 6
BP 1175
EP 1178
DI 10.1103/PhysRevLett.81.1175
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 109CL
UT WOS:000075303600010
ER
PT J
AU Witala, H
Glockle, W
Huber, D
Golak, J
Kamada, H
AF Witala, H
Glockle, W
Huber, D
Golak, J
Kamada, H
TI Cross section minima in elastic Nd scattering: Possible evidence for
three-nucleon force effects
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID PARTIAL-WAVE ANALYSIS; ANALYZING POWER; BREAKUP; IMPACT; SPACE
AB Neutron-deuteron elastic scattering cross sections are calculated at different energies using modern nucleon-nucleon (NN) interactions and the Tucson-Melbourne three-nucleon force adjusted to the triton binding energy. Predictions based on NN forces only underestimate nucleon-deuteron data in the minima at higher energies starting around 60 MeV. Adding the three-nucleon forces fills up those minima and reduces the discrepancies significantly. [S0031-9007(98)06806-9].
C1 Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany.
Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Witala, H (reprint author), Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany.
NR 29
TC 174
Z9 174
U1 0
U2 2
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 10
PY 1998
VL 81
IS 6
BP 1183
EP 1186
DI 10.1103/PhysRevLett.81.1183
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 109CL
UT WOS:000075303600012
ER
PT J
AU Mishra, SR
Cummins, TR
Waddill, GD
Gammon, WJ
van der Laan, G
Goodman, KW
Tobin, JG
AF Mishra, SR
Cummins, TR
Waddill, GD
Gammon, WJ
van der Laan, G
Goodman, KW
Tobin, JG
TI Nature of resonant photoemission in Gd
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID CORE-LEVEL PHOTOEMISSION; MAGNETIC CIRCULAR-DICHROISM;
PHOTOELECTRON-SPECTROSCOPY; ULTRATHIN FILMS; PHOTOABSORPTION; ASYMMETRY;
SYSTEMS; LIGHT; FE
AB The phenomenon of resonant photoemission happens when, in addition to a direct photoemission channel, a second indirect channel opens up as the absorption threshold of a core level is crossed. A massive increase in emission cross section can occur, but the nature of the process remains clouded. Using novel magnetic linear dichroism in photoelectron spectroscopy experiments and theoretical calculations, we can now clearly demonstrate that temporal matching of the processes as well as energy matching is a requirement for true "resonant photoemission."
C1 Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23284 USA.
Univ Missouri, Dept Phys, Rolla, MO 65401 USA.
SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Mishra, SR (reprint author), Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23284 USA.
RI Tobin, James/O-6953-2015; van der Laan, Gerrit/Q-1662-2015
OI van der Laan, Gerrit/0000-0001-6852-2495
NR 40
TC 29
Z9 29
U1 0
U2 2
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 10
PY 1998
VL 81
IS 6
BP 1306
EP 1309
DI 10.1103/PhysRevLett.81.1306
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 109CL
UT WOS:000075303600043
ER
PT J
AU Arko, AJ
Joyce, JJ
AF Arko, AJ
Joyce, JJ
TI CeSi2 photoemission spectra at 5 meV resolution
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID KONDO
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Arko, AJ (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Delley, Bernard/E-1336-2014
OI Delley, Bernard/0000-0002-7020-2869
NR 3
TC 8
Z9 8
U1 0
U2 1
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 10
PY 1998
VL 81
IS 6
BP 1348
EP 1348
DI 10.1103/PhysRevLett.81.1348
PG 1
WC Physics, Multidisciplinary
SC Physics
GA 109CL
UT WOS:000075303600058
ER
PT J
AU Lazarides, AA
Rabitz, H
Chang, J
Brown, NJ
AF Lazarides, AA
Rabitz, H
Chang, J
Brown, NJ
TI Identifying collective dynamical observables bearing on local features
of potential surfaces
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID FUNCTIONAL SENSITIVITY ANALYSIS; ENERGY SURFACE; F+H-2 REACTION
AB A singular value decomposition of dynamical sensitivities provides insight into the relationship between a data set and the potential which is often not evident from the sensitivities of individual observables. An illustration is treated consisting of data sets drawn from reactive transition probabilities as a function of energy for the collinear H+H-2 system. While the sensitivities of individual reactive transition probabilities to the two-dimensional potential are highly structured functions of the potential coordinates, a set of reactive transition probabilities is identified which collectively has localized sensitivity primarily to the saddle point region and secondarily to the slope along the H-3 symmetric stretch line in the outer corner tunneling region and to the width of the barrier. Information of this type garnered from a principal component sensitivity analysis can be especially valuable when attempting to use dynamics data to refine potential surfaces. (C) 1998 American Institute of Physics.
C1 Princeton Univ, Dept Chem, Princeton, NJ 08544 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Energy & Environm, Berkeley, CA 94720 USA.
RP Lazarides, AA (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA.
NR 12
TC 1
Z9 1
U1 0
U2 0
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 8
PY 1998
VL 109
IS 6
BP 2065
EP 2070
DI 10.1063/1.476719
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 107XW
UT WOS:000075237100004
ER
PT J
AU Woon, DE
Peterson, KA
Dunning, TH
AF Woon, DE
Peterson, KA
Dunning, TH
TI Benchmark calculations with correlated molecular wave functions. IX. The
weakly bound complexes Ar-H-2 and Ar-HCl
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID GAUSSIAN-BASIS SETS; CONFIGURATION-INTERACTION CALCULATIONS;
POTENTIAL-ENERGY SURFACE; AB-INITIO; DIATOMIC HYDRIDES; WATER DIMER;
ABINITIO; ENERGETICS; HYDROGEN; CLUSTERS
AB The interaction of Ar with H-2; and HCl has been studied using Moller-Plesset perturbation theory (MP2, MP3, MP4) and coupled-duster [CCSD, CCSD(T)] methods with augmented correlation consistent basis sets. Basis sets as large as triply augmented quadruple zeta quality were used to investigate the convergence trends. Interaction energies were determined using the supermolecule approach with the counterpoise correction to account for basis set superposition error. Comparison with the available empirical potentials finds excellent agreement for both binding energies and transition state. For Ar-H-2, the estimated complete basis set (CBS) limits for the binding energies of the two equivalent minima and the connecting transition state (TS) are, respectively, 55 and 47 cm(-1) at the MP4 level and 54 and 46 cm(-1) at the CCSD(T) level, respectively [the XC(fit) empirical potential of Bissonnette et al. [J. Chem. Phys. 105, 2634 (1996)] yields 56.6 and 47.8 cm(-1) for H2 (upsilon = 0)]. The estimated CBS limits for the binding energies of the two minima and transition state of Ar-HCl are 185, 155, and 109 cm(-1) at the MP4 level and 176, 147, and 105 cm(-1) at the CCSD(T) level, respectively [the H6(4,3,0) empirical potential of Hutson [J. Phys. Chem. 96, 4237 (1992)] yields 176.0, 148.3, and 103.3 cm(-1) for HC1 (u = 0)], Basis sets containing diffuse functions of (dfg) symmetries were found to be essential for accurately modeling these two complexes, which are largely bound by dispersion and induction forces. Highly correlated wave functions were also required for accurate results. This was found to be particularly true for ArHCl, where significant differences in calculated binding energies were observed between MP2, MP4, and CCSD(T). (C) 1998 American Institute of Physics.
C1 Pacific NW Lab, Theory Modeling & Simulat Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Woon, DE (reprint author), Mol Res Inst, 845 Page Mill Rd, Palo Alto, CA 94304 USA.
NR 46
TC 45
Z9 45
U1 5
U2 11
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 8
PY 1998
VL 109
IS 6
BP 2233
EP 2241
DI 10.1063/1.476510
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 107XW
UT WOS:000075237100022
ER
PT J
AU Shuai, Z
Bredas, JL
Saxena, A
Bishop, AR
AF Shuai, Z
Bredas, JL
Saxena, A
Bishop, AR
TI Linear and nonlinear optical response of polyenes: A density matrix
renormalization group study
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID LIGHT-EMITTING-DIODES; EVEN-PARITY STATES; CONJUGATED POLYMERS;
3RD-HARMONIC GENERATION; ELECTRON-CORRELATION; HYPERPOLARIZABILITY;
PHOTOISOMERIZATION; POLYACETYLENE; POLARIZATION; TRANSITION
AB Using a symmetry adapted density matrix renormalization group (DMRG) formulation, we have calculated various optical spectra, including linear absorption, electroabsorption, third-harmonic generation, and two-photon absorption, for a series of linear polyene molecules (up to 40 carbon sites) modeled by an extended Hubbard-Peierls Hamiltonian within the intermediate correlation regime. The theoretical two-photon absorption spectrum for trans-octatetraene is in good agreement with experiment. By comparing the experimental linear absorption spectra and theoretical higher A(g) state energies, it is suggested that the so-called cis-band actually corresponds to the threshold of the mA(g) band. (C) 1998 American Institute of Physics.
C1 Univ Mons, Ctr Rech Elect & Photon Mol, Serv Chim Mat Nouveaux, B-7000 Mons, Belgium.
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Shuai, Z (reprint author), Univ Mons, Ctr Rech Elect & Photon Mol, Serv Chim Mat Nouveaux, B-7000 Mons, Belgium.
EM Jeanluc@averell.umh.ac.be
RI Bredas, Jean-Luc/A-3431-2008; Shuai, Zhigang/H-5576-2011
OI Bredas, Jean-Luc/0000-0001-7278-4471; Shuai, Zhigang/0000-0003-3867-2331
NR 39
TC 24
Z9 26
U1 1
U2 8
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 8
PY 1998
VL 109
IS 6
BP 2549
EP 2555
DI 10.1063/1.476827
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 107XW
UT WOS:000075237100063
ER
PT J
AU Stankovic, S
Espenson, JH
AF Stankovic, S
Espenson, JH
TI The MTO-catalyzed oxidative conversion of N,N-dimethylhydrazones to
nitriles
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID METALLATED DIMETHYLHYDRAZONES; HYDROGEN-PEROXIDE; ALDEHYDES
AB Methyltrioxorhenium catalyzes the fast and efficient oxidation of aldehyde N,N-dimethylhydrazones to the corresponding nitriles in high yield.
C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA.
RP Espenson, JH (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA.
NR 16
TC 22
Z9 22
U1 1
U2 3
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 1359-7345
J9 CHEM COMMUN
JI Chem. Commun.
PD AUG 7
PY 1998
IS 15
BP 1579
EP 1580
DI 10.1039/a802723d
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 106PL
UT WOS:000075138000041
ER
PT J
AU Sasaki, DY
Padilla, BE
AF Sasaki, DY
Padilla, BE
TI Dithioamide metal ion receptors on fluorescent lipid bilayers for the
selective optical detection of mercuric ion
SO CHEMICAL COMMUNICATIONS
LA English
DT Article
ID SENSOR; LEAD
AB Functionalized lipid bilayers with dithioamide receptors at the surface and pyrene labels in the hydrophobic interior showed a selective fluorescence response to mercuric ion with sensitivity limits at the ppb level.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Sasaki, DY (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM dysasak@sandia.com
NR 12
TC 51
Z9 51
U1 0
U2 5
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 1359-7345
J9 CHEM COMMUN
JI Chem. Commun.
PD AUG 7
PY 1998
IS 15
BP 1581
EP 1582
DI 10.1039/a802534g
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 106PL
UT WOS:000075138000042
ER
PT J
AU Silver, GL
AF Silver, GL
TI Operational equations for data in rectangular array
SO COMPUTATIONAL STATISTICS & DATA ANALYSIS
LA English
DT Article
AB It is widely regarded as impossible to estimate curvature on four points in rectangular array. This paper presents equations that estimate curvature on such data. One of the equations is analogous to the parabola for three equidistant, curvilinear data. The other equations are based on exponential functions. They are usually superior to the bilinear equation if the L-2 norm test is the criterion of merit. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 6
TC 6
Z9 6
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-9473
J9 COMPUT STAT DATA AN
JI Comput. Stat. Data Anal.
PD AUG 7
PY 1998
VL 28
IS 2
BP 211
EP 215
DI 10.1016/S0167-9473(98)00029-2
PG 5
WC Computer Science, Interdisciplinary Applications; Statistics &
Probability
SC Computer Science; Mathematics
GA 114VZ
UT WOS:000075631000006
ER
PT J
AU Goheen, SC
Hilsenbeck, JL
AF Goheen, SC
Hilsenbeck, JL
TI High-performance ion-exchange chromatography and adsorption of plasma
proteins
SO JOURNAL OF CHROMATOGRAPHY A
LA English
DT Article; Proceedings Paper
CT 17th International Symposium on the Separation and Analysis of Proteins,
Peptides, and Polynucleotides (ISPPP 97)
CY OCT 26-29, 1997
CL ROCKVILLE, MARYLAND
SP Elsevier Sci, CA Separat Sci Soc (CaSSS)
DE proteins; albumin; immunoglobulins; fibrinogen
ID THERMODYNAMIC DRIVING FORCES; RAT CYTOCHROME B(5); POLYMERIC
BIOMATERIALS; RETENTION MODEL; SURFACE; KINETICS
AB Resolution and recovery are primary concerns in protein chromatography. Separations are often by size, ion exchange, or hydrophobic-hydrophilic properties of the support, eluent and protein. Adsorption of a protein to a synthetic surface plays an essential role in this complex process. In this study, we examined the adsorption properties of three representative plasma proteins (albumin, fibrinogen, and immunoglobulin G) on nonporous column materials containing either quaternary amine or sulfopropyl functional groups. The adsorption properties were studied at 37 degrees C and pH 7.4. Salt gradients were used to examine the adsorption/desorption properties of each of the proteins on each type of surface. The salt concentrations at desorption were measured and compared to the protein isoelectric points. In addition, we examined protein recoveries as a function of desorption time. Our results suggest that protein recoveries depend not only on the protein, eluent and surface, but also the residence time and overall charge concentration during the initial adsorption process. Finally, we correlated the number of charge sites on a molecule with the width of a chromatographic band at half height. The data produced as a result of this study may be used to determine the actual unfolding time of a protein, given a certain set of conditions. The data may also help in understanding the chemistry and dynamics of the protein adsorption processes in ion-exchange chromatography as well as provide key structural information about the proteins. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Pacific NW Lab, Richland, WA 99352 USA.
RP Goheen, SC (reprint author), Pacific NW Lab, POB 999, Richland, WA 99352 USA.
NR 22
TC 24
Z9 27
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0021-9673
J9 J CHROMATOGR A
JI J. Chromatogr. A
PD AUG 7
PY 1998
VL 816
IS 1
BP 89
EP 96
DI 10.1016/S0021-9673(98)00045-4
PG 8
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 112NJ
UT WOS:000075500400011
PM 9741102
ER
PT J
AU Gurley, LR
Umbarger, KO
Kim, JM
Bradbury, EM
Lehnert, BE
AF Gurley, LR
Umbarger, KO
Kim, JM
Bradbury, EM
Lehnert, BE
TI High-performance liquid chromatographic analysis of staurosporine in
vivo - Its translocation and pharmacokinetics in rats
SO JOURNAL OF CHROMATOGRAPHY B
LA English
DT Article
DE staurosporine
ID SPONTANEOUSLY HYPERTENSIVE RATS; PROTEIN-KINASE; MAMMALIAN-CELLS;
INHIBITION; PHOSPHORYLATION; ARREST
AB The protein kinase inhibitor staurosporine (Stsp) has been used extensively to study physiological functions, biochemical mechanisms, and cancer therapy. Using an HPLC assay for Stsp developed in our laboratory, we find that only 0.7% of Stsp remains in circulating blood of rats 5 min after injection. In vitro, Stsp is adsorbed to red blood cells (RBC) weakly and reversibly. In vivo, all but 1.2-2.5% of Stsp injected is adsorbed by the heart and lungs in one passage through them, indicating that the endothelium acts as a major Stsp sink. Following initial adsorption, pharmacokinetic studies demonstrated that Stsp had a half-life of 51.6 min in plasma and 75.3 min in RBC. Thus, plasma Stsp was in the cancer therapy range of 1-10 ng/ml for 2.7 h following a bolus injection. This data indicates that a bolus injection of Stsp must be followed by a continuous infusion of low Stsp concentration for several days to produce the G1 arrest in cells necessary to stop cell proliferation. Published by Elsevier Science B.V.
C1 Univ Calif Los Alamos Natl Lab, Div Life Sci, Los Alamos, NM 87545 USA.
RP Gurley, LR (reprint author), Univ Calif Los Alamos Natl Lab, Div Life Sci, Mail Stop M888, Los Alamos, NM 87545 USA.
NR 22
TC 3
Z9 3
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4347
J9 J CHROMATOGR B
JI J. Chromatogr. B
PD AUG 7
PY 1998
VL 712
IS 1-2
BP 211
EP 224
DI 10.1016/S0378-4347(98)00077-2
PG 14
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 100RW
UT WOS:000074830000022
PM 9698244
ER
PT J
AU Watson, JN
Brown, AS
Iton, LE
White, JW
AF Watson, JN
Brown, AS
Iton, LE
White, JW
TI Detection of TPA-silicalite precursors nucleated during the room
temperature aging of a clear homogeneous synthesis solution
SO JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS
LA English
DT Article
ID HYDRATE-TYPE MATERIALS; NEUTRON-SCATTERING; STRUCTURAL LINKS;
ZEOLITE-TYPE; X-RAY; SPECTROSCOPY
AB The transformations occurring during the aging of a clear silicalite preparation at room temperature were studied by small angle X-ray (SAXS) and neutron scattering (SANS), X-ray diffraction and IR spectroscopy. Particles with a radius of gyration of 28 A were detected in a solution that was aged at room temperature for six months. A cylindrical form factor provided the best fit to the experimental scattering functions and so a similar particle morphology to that formed during the initial stages of the hydrothermal synthesis at 100 degrees C can be presumed. The IR spectrum of a freeze dried sample taken from the aged solution shows a band at 560 cm(-1) characteristic of the framework structure of silicalite, and a SANS contrast variation study showed that the scattering species contain the tetrapropylammonium template. The time required for the hydrothermal crystallisation of silicalite was significantly reduced by aging the silicalite preparation prior to heating to 100 degrees C.
C1 Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia.
Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP White, JW (reprint author), Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia.
NR 17
TC 39
Z9 39
U1 0
U2 4
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 0956-5000
J9 J CHEM SOC FARADAY T
JI J. Chem. Soc.-Faraday Trans.
PD AUG 7
PY 1998
VL 94
IS 15
BP 2181
EP 2186
DI 10.1039/a801924j
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 106TT
UT WOS:000075167100019
ER
PT J
AU Hazeltine, RD
Navratil, GA
Nevins, WM
Porkolab, M
Sauthoff, NR
Simonen, TC
Stacey, WM
AF Hazeltine, RD
Navratil, GA
Nevins, WM
Porkolab, M
Sauthoff, NR
Simonen, TC
Stacey, WM
TI The advanced tokamak
SO SCIENCE
LA English
DT Letter
C1 Univ Texas, Inst Fus Studies, Austin, TX 78712 USA.
Columbia Univ, Dept Phys, New York, NY 10027 USA.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08544 USA.
Gen Atom Co, San Diego, CA 92186 USA.
Georgia Inst Technol, Atlanta, GA 30332 USA.
RP Hazeltine, RD (reprint author), Univ Texas, Inst Fus Studies, Austin, TX 78712 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD AUG 7
PY 1998
VL 281
IS 5378
BP 784
EP 784
PG 1
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 108ZD
UT WOS:000075295600027
ER
PT J
AU Dalal, RV
Ram, RJ
Helkey, R
Roussell, H
Choquette, KD
AF Dalal, RV
Ram, RJ
Helkey, R
Roussell, H
Choquette, KD
TI Low distortion analogue signal transmission using vertical cavity lasers
SO ELECTRONICS LETTERS
LA English
DT Article
ID LINKS
AB Signal distortion in a short wavelength vertical cavity surface-emitting laser (VCSEL) is studied. The spurious free dynamic range is found to be 104.3 dB Hz(2/3) at 102 MHz and 98 dB Hz(2/3) at 1 GHz, which approaches the dynamic range of Fabry-Perot and DFB lasers, and is 20 dB higher than previously reported for VCSELs.
C1 MIT, Elect Res Lab, Cambridge, MA 02139 USA.
MIT, Lincoln Lab, Lexington, MA 02173 USA.
Sandia Natl Labs, Ctr Cpd Semicond Technol, Albuquerque, NM 87185 USA.
RP Dalal, RV (reprint author), MIT, Elect Res Lab, 77 Massachusetts Ave,Room 36-487, Cambridge, MA 02139 USA.
EM rajeev@mit.edu
NR 9
TC 20
Z9 20
U1 0
U2 0
PU IEE-INST ELEC ENG
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 0013-5194
J9 ELECTRON LETT
JI Electron. Lett.
PD AUG 6
PY 1998
VL 34
IS 16
BP 1590
EP 1591
DI 10.1049/el:19981087
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA 113LA
UT WOS:000075551400040
ER
PT J
AU Barthes, M
Bordallo, HN
Eckert, J
Maurus, O
de Nunzio, G
Leon, J
AF Barthes, M
Bordallo, HN
Eckert, J
Maurus, O
de Nunzio, G
Leon, J
TI Dynamics of crystalline N-methylacetamide: Temperature dependence of
infrared and inelastic neutron scattering spectra
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID PROTON-TRANSFER; HYDROGEN-BOND; ACETANILIDE; POLARONS; CHAINS
AB N-methylacetamide may be viewed as a simple model for polypeptides. Unusual intensities have previously been observed in its amide vibrational spectra and were attributed to contradictory causes, namely, Fermi resonance, vibrational polarons, and dynamic proton transfer along the H bond. We report the first inelastic neutron scattering study of three specifically deuterated derivatives at different temperatures along with new infrared spectra. The analysis of the librations in the INS spectra indicates a degeneracy between the N-CH3 methyl torsional mode and another degree of freedom assigned to one component of the skeletal torsion. No direct evidence for a methyl-methyl coupling is observed. However gamma(CO) appears strongly coupled to the motions of the neighboring C-CH3 group. A new absorption band ("X") is observed at approximately 1590 cm(-1) in the IR spectrum of the amide-1/amide-2 region. This calls into question the previous assignment of a band at similar to 1600 cm(-1) as the overtone of gamma(NH). In addition, all observed peaks in the amide-2 region shift to higher frequency on cooling so that none of them could be assigned to the nu(NH) mode, as previously proposed. Previous theoretical explanations of the anomalous amide spectra of N-methylacetamide based on either Fermi resonance or the proton-transfer model are therefore in disagreement with our new experimental data.
C1 Univ Montpellier 2, GDPC, F-34095 Montpellier 5, France.
Univ Calif Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
Univ Montpellier 2, PMT, F-34095 Montpellier 5, France.
RP Barthes, M (reprint author), Univ Montpellier 2, GDPC, F-34095 Montpellier 5, France.
RI Bordallo, Heloisa/I-6836-2012; De Nunzio, Giorgio/L-7283-2015
OI Bordallo, Heloisa/0000-0003-0750-0553; De Nunzio,
Giorgio/0000-0002-1998-0286
NR 22
TC 18
Z9 18
U1 1
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5647
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD AUG 6
PY 1998
VL 102
IS 32
BP 6177
EP 6183
DI 10.1021/jp981743y
PG 7
WC Chemistry, Physical
SC Chemistry
GA 110DE
UT WOS:000075364200005
ER
PT J
AU Zhang, D
Gracias, DH
Ward, R
Gauckler, M
Tian, Y
Shen, YR
Somorjai, GA
AF Zhang, D
Gracias, DH
Ward, R
Gauckler, M
Tian, Y
Shen, YR
Somorjai, GA
TI Surface studies of polymer blends by sum frequency vibrational
spectroscopy, atomic force microscopy, and contact angle goniometry
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
AB The surface composition, surface structure, and wetting properties of a polymer blend were studied by a combination of surface-sensitive techniques: IR + visible sum-frequency generation vibrational spectroscopy (SFG), atomic force microscopy (AFM), and contact angle goniometry. The polymer blend studied is composed of Biospan-S (BS) and a phenoxy base polymer (BP). BS is a polyurethane, capped with poly(dimethylsiloxane) (PDMS) end groups, and has a water contact angle of 94 degrees. BP is more hydrophilic with a water contact angle of 74 degrees. The SFG study shows that the more hydrophobic BS component likes to segregate to the blend surface in air and approaches a full surface coverage when the BS bulk concentration is only 1.7 wt %. The surface density of BS decreases with the decrease of its bulk concentration from 1.7 wt % and becomes undetectable at the surface, at a bulk concentration of 0,17 wt %. The surface free energy of the blend varies accordingly, as seen from the contact angle measurements. The AFM study also shows that the blend surface is predominantly occupied by BP for BS bulk concentrations lower than 0.17 wt % and by BS for BS bulk concentrations higher than 1.7 wt %. It reveals a domain pattern in the intermediate region when BS and BP coexist on the surface. The combined information obtained by SFG, AFM, and contact angle goniometry provides a more detailed understanding of interfacial phenomenon of blended macromolecular systems at the molecular level.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Polymer Technol Grp Inc, Berkeley, CA 94710 USA.
Swiss Fed Inst Technol, Dept Elect Engn, CH-8000 Zurich, Switzerland.
RP Somorjai, GA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RI Gracias, David/A-1942-2010
OI Gracias, David/0000-0003-2735-4725
NR 20
TC 49
Z9 49
U1 2
U2 16
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5647
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD AUG 6
PY 1998
VL 102
IS 32
BP 6225
EP 6230
DI 10.1021/jp981550a
PG 6
WC Chemistry, Physical
SC Chemistry
GA 110DE
UT WOS:000075364200012
ER
PT J
AU Sieger, MT
Simpson, WC
Orlando, TM
AF Sieger, MT
Simpson, WC
Orlando, TM
TI Production of O-2 on icy satellites by electronic excitation of
low-temperature water ice
SO NATURE
LA English
DT Article
ID D2O ICE; GANYMEDE; OXYGEN; IONS
AB The signature of condensed molecular oxygen has been reported in recent optical-reflectance measurements of the jovian moon Ganymede(1), and a tenuous oxygen atmosphere has been observed on Europa(2). The surfaces of these moons contain large amounts of water ice, and it is thought that O-2 is formed by the sputtering of ice by energetic particles from the jovian magnetosphere(3-8). Understanding how O-2 might be formed from low-temperature ice is crucial for theoretical and experimental simulations of the surfaces and atmospheres of icy bodies in the Solar System. Here we report laboratory measurements of the threshold energy, cross-section and temperature dependence of O-2 production by electronic excitation of ice in vacuum, following electron-beam irradiation. Molecular oxygen is formed by direct excitation and dissociation of a stable precursor molecule, rather than (as has been previously thought) by diffusion and chemical recombination of precursor fragments. The large cross-section for O-2 production suggests that electronic excitation plays an important part in the formation of O-2 on Ganymede and Europa.
C1 Pacific NW Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Orlando, TM (reprint author), Pacific NW Lab, WR Wiley Environm Mol Sci Lab, MS K8-88,POB 999, Richland, WA 99352 USA.
EM tm_orlando@pnl.gov
RI Sieger, Matthew/B-4261-2011
OI Sieger, Matthew/0000-0001-7387-3660
NR 23
TC 120
Z9 121
U1 3
U2 12
PU MACMILLAN MAGAZINES LTD
PI LONDON
PA PORTERS SOUTH, 4 CRINAN ST, LONDON, ENGLAND N1 9XW
SN 0028-0836
J9 NATURE
JI Nature
PD AUG 6
PY 1998
VL 394
IS 6693
BP 554
EP 556
PG 3
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 107YN
UT WOS:000075238700039
PM 9707116
ER
PT J
AU Kim, KK
Kim, R
Kim, SH
AF Kim, KK
Kim, R
Kim, SH
TI Crystal structure of a small heat-shock protein
SO NATURE
LA English
DT Article
ID ELECTRON-DENSITY MAPS; ALPHA-CRYSTALLIN; MOLECULAR CHAPERONE; IN-VITRO;
2.8-ANGSTROM; FAMILY; DOMAIN
AB The principal heat-shock proteins that have chaperone activity (that is, they protect newly made proteins from misfolding) belong to five conserved classes: HSP100, HSP90, HSP70, HSP60 and the small heat-shock proteins (sHSPs). The sHSPs can form large multimeric structures and have a wide range of cellular functions, including endowing cells with thermotolerance in vivo(1,2) and being able to act as molecular chaperones in vitro(3-8); sHSPs do this by forming stable complexes with folding intermediates of their protein substrates(9,10). However, there is little information available about these structures or the mechanism by which substrates are protected from thermal denaturation by sHSPs. Here we report the crystal structure of a small heat-shock protein from Methanococcus jannaschii, a hyperthermophilic archaeon. The monomeric folding unit is a composite beta-sandwich in which one of the beta-strands comes from a neighbouring molecule. Twenty-four monomers form a hollow spherical complex of octahedral symmetry, with eight trigonal and six square 'windows'. The sphere has an outer diameter of 120 Angstrom and an inner diameter of 65 Angstrom.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Kim, SH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, 220 Melvin Calvin Lab, Berkeley, CA 94720 USA.
NR 27
TC 616
Z9 644
U1 6
U2 35
PU MACMILLAN MAGAZINES LTD
PI LONDON
PA PORTERS SOUTH, 4 CRINAN ST, LONDON, ENGLAND N1 9XW
SN 0028-0836
J9 NATURE
JI Nature
PD AUG 6
PY 1998
VL 394
IS 6693
BP 595
EP 599
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 107YN
UT WOS:000075238700053
PM 9707123
ER
PT J
AU Fukuda, Y
Hayakawa, T
Ichihara, E
Inoue, K
Ishihara, K
Ishino, H
Itow, Y
Kajita, T
Kameda, J
Kasuga, S
Kobayashi, K
Kobayashi, Y
Koshio, Y
Martens, K
Miura, M
Nakahata, M
Nakayama, S
Okada, A
Oketa, M
Okumura, K
Ota, M
Sakurai, N
Shiozawa, M
Suzuki, Y
Takeuchi, Y
Totsuka, Y
Yamada, S
Earl, M
Habig, A
Hong, JT
Kearns, E
Kim, SB
Masuzawa, M
Messier, MD
Scholberg, K
Stone, JL
Sulak, LR
Walter, CW
Goldhaber, M
Barszczak, T
Gajewski, W
Halverson, PG
Hsu, J
Kropp, WR
Price, LR
Reines, F
Sobel, HW
Vagins, MR
Ganezer, KS
Keig, WE
Ellsworth, RW
Tasaka, S
Flanagan, JW
Kibayashi, A
Learned, JG
Matsuno, S
Stenger, V
Takemori, D
Ishii, T
Kanzaki, J
Kobayashi, T
Nakamura, K
Nishikawa, K
Oyama, Y
Sakai, A
Sakuda, M
Sasaki, O
Echigo, S
Kohama, M
Suzuki, AT
Haines, TJ
Blaufuss, E
Sanford, R
Svoboda, R
Chen, ML
Conner, Z
Goodman, JA
Sullivan, GW
Mori, M
Goebel, F
Hill, J
Jung, CK
Mauger, C
McGrew, C
Sharkey, E
Viren, B
Yanagisawa, C
Doki, W
Ishizuka, T
Kitaguchi, Y
Koga, H
Miyano, K
Okazawa, H
Saji, C
Takahata, M
Kusano, A
Nagashima, Y
Takita, M
Yamaguchi, T
Yoshida, M
Etoh, M
Fujita, K
Hasegawa, A
Hasegawa, T
Hatakeyama, S
Iwamoto, T
Kinebuchi, T
Koga, M
Maruyama, T
Ogawa, H
Saito, M
Suzuki, A
Tsushima, F
Koshiba, M
Nemoto, M
Nishijima, K
Futagami, T
Hayato, Y
Kanaya, Y
Kaneyuki, K
Watanabe, Y
Kielczewska, D
Doyle, R
George, J
Stachyra, A
Wai, L
Wilkes, J
Young, K
AF Fukuda, Y
Hayakawa, T
Ichihara, E
Inoue, K
Ishihara, K
Ishino, H
Itow, Y
Kajita, T
Kameda, J
Kasuga, S
Kobayashi, K
Kobayashi, Y
Koshio, Y
Martens, K
Miura, M
Nakahata, M
Nakayama, S
Okada, A
Oketa, M
Okumura, K
Ota, M
Sakurai, N
Shiozawa, M
Suzuki, Y
Takeuchi, Y
Totsuka, Y
Yamada, S
Earl, M
Habig, A
Hong, JT
Kearns, E
Kim, SB
Masuzawa, M
Messier, MD
Scholberg, K
Stone, JL
Sulak, LR
Walter, CW
Goldhaber, M
Barszczak, T
Gajewski, W
Halverson, PG
Hsu, J
Kropp, WR
Price, LR
Reines, F
Sobel, HW
Vagins, MR
Ganezer, KS
Keig, WE
Ellsworth, RW
Tasaka, S
Flanagan, JW
Kibayashi, A
Learned, JG
Matsuno, S
Stenger, V
Takemori, D
Ishii, T
Kanzaki, J
Kobayashi, T
Nakamura, K
Nishikawa, K
Oyama, Y
Sakai, A
Sakuda, M
Sasaki, O
Echigo, S
Kohama, M
Suzuki, AT
Haines, TJ
Blaufuss, E
Sanford, R
Svoboda, R
Chen, ML
Conner, Z
Goodman, JA
Sullivan, GW
Mori, M
Goebel, F
Hill, J
Jung, CK
Mauger, C
McGrew, C
Sharkey, E
Viren, B
Yanagisawa, C
Doki, W
Ishizuka, T
Kitaguchi, Y
Koga, H
Miyano, K
Okazawa, H
Saji, C
Takahata, M
Kusano, A
Nagashima, Y
Takita, M
Yamaguchi, T
Yoshida, M
Etoh, M
Fujita, K
Hasegawa, A
Hasegawa, T
Hatakeyama, S
Iwamoto, T
Kinebuchi, T
Koga, M
Maruyama, T
Ogawa, H
Saito, M
Suzuki, A
Tsushima, F
Koshiba, M
Nemoto, M
Nishijima, K
Futagami, T
Hayato, Y
Kanaya, Y
Kaneyuki, K
Watanabe, Y
Kielczewska, D
Doyle, R
George, J
Stachyra, A
Wai, L
Wilkes, J
Young, K
CA Super-Kamiokande Collaboration
TI Measurement of a small atmospheric nu(mu)/nu(e) ratio
SO PHYSICS LETTERS B
LA English
DT Article
ID PION-PRODUCTION; NEUTRINO FLUX; DETECTOR
AB From an exposure of 25.5 kiloton-years of the Super-Kamiokande detector, 900 muon-like and 983 electron-like single-ring atmospheric neutrino interactions were detected with momentum p(e) > 100 MeV/c, p(mu) > 200 MeV/c, and with visible energy less than 1.33 GeV. Using a detailed Monte Carlo simulation, the ratio (mu/e)(DATA)/(mu/e)(MC) was measured to be 0.61 +/- 0.03(stat.) +/- 0.05(sys.), consistent with previous results from the Kamiokande, IMB and Soudan-2 experiments, and smaller than expected from theoretical models of atmospheric neutrino production. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 1888502, Japan.
Boston Univ, Dept Phys, Boston, MA 02215 USA.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
Calif State Univ Dominguez Hills, Dept Phys, Carson, CA 90747 USA.
George Mason Univ, Dept Phys, Fairfax, VA 22030 USA.
Gifu Univ, Dept Phys, Gifu 5011193, Japan.
RP Fukuda, Y (reprint author), Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 1888502, Japan.
RI Nakamura, Kenzo/F-7174-2010; Sobel, Henry/A-4369-2011; Suzuki,
Yoichiro/F-7542-2010; Martens, Kai/A-4323-2011; Kim,
Soo-Bong/B-7061-2014; Sakurai, Nobuyuki/M-5009-2014; Ishino,
Hirokazu/C-1994-2015; Koshio, Yusuke/C-2847-2015; Kibayashi,
Atsuko/K-7327-2015
OI Sakurai, Nobuyuki/0000-0002-1002-217X; Ishino,
Hirokazu/0000-0002-8623-4080; Koshio, Yusuke/0000-0003-0437-8505;
NR 23
TC 617
Z9 619
U1 2
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
J9 PHYS LETT B
JI Phys. Lett. B
PD AUG 6
PY 1998
VL 433
IS 1-2
BP 9
EP 18
DI 10.1016/S0370-2693(98)00476-6
PG 10
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 107ED
UT WOS:000075193300002
ER
PT J
AU Dighe, AS
Dunietz, I
Fleischer, R
AF Dighe, AS
Dunietz, I
Fleischer, R
TI Resolving a discrete ambiguity in the CKM angle beta through B-u,B-d ->
J/psi K* and B-s -> J/psi phi decays
SO PHYSICS LETTERS B
LA English
DT Article
ID ASYMMETRIES
AB It is well known that sin(2 beta), where beta is one of the angles of the unitarity triangle of the CKM matrix, can be determined in a theoretically clean way by measuring mixing-induced CP violation in the decay B-d --> J/psi K-s. Another clean extraction of this CKM angle is provided by the time-dependent angular distribution for the decay products of B-d --> J/psi (--> l(+)l(-)) K * (0)(--> pi(0)K(s)), where we have more observables at our disposal than in the case of B-d --> J/psi K-s, so that in addition to sin(2 beta) also cos(2 beta) can be probed in a direct way. Unfortunately a sign ambiguity remains in cos(2 beta). If it could be resolved, a discrete ambiguity in the extraction of the CKM angle beta could be resolved as well, which would allow a more incisive test of the CKM model of CP violation. This note shows that detailed time-dependent studies of B-u,B-d,--> J/psi K * and B-s --> J/psi phi decay processes can determine the sign of cos(2 beta), thereby removing the corresponding ambiguity in the extraction of the CKM angle beta. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy.
Fermi Natl Accelerator Lab, Div Theoret Phys, Batavia, IL 60510 USA.
CERN, Div Theory, CH-1211 Geneva, Switzerland.
RP Dighe, AS (reprint author), Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy.
NR 19
TC 37
Z9 37
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 AUG 6
PY 1998
VL 433
IS 1-2
BP 147
EP 149
DI 10.1016/S0370-2693(98)00680-7
PG 3
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 107ED
UT WOS:000075193300020
ER
PT J
AU Acciarri, M
Adriani, O
Aguilar-Benitez, M
Ahlen, S
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Ambrosi, G
Anderhub, H
Andreev, VP
Angelescu, T
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Baksay, L
Banerjee, S
Banerjee, S
Banicz, K
Barczyk, A
Barillere, R
Barone, L
Bartalini, P
Baschirotto, A
Basile, M
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Bhattacharya, S
Biasini, M
Biland, A
Bilei, GM
Blaising, JJ
Blyth, SC
Bobbink, GJ
Bock, R
Bohm, A
Boldizsar, L
Borgia, B
Bourilkov, D
Bourquin, M
Braccini, S
Branson, JG
Brigljevic, V
Brock, IC
Buffini, A
Buijs, A
Burger, JD
Burger, WJ
Busenitz, J
Button, A
Cai, XC
Campanelli, M
Capell, M
Romeo, GC
Carlino, G
Cartacci, AM
Casaus, J
Castellini, G
Cavallari, F
Cavallo, N
Cecchi, C
Cerrada, M
Cesaroni, F
Chamizo, M
Chang, YH
Chaturvedi, UK
Chekanov, SV
Chemarin, M
Chen, A
Chen, G
Chen, GM
Chen, HF
Chen, HS
Chereau, X
Chiefari, G
Chien, CY
Cifarelli, L
Cindolo, F
Civinini, C
Clare, I
Clare, R
Coignet, G
Colijn, AP
Colino, N
Costantini, S
Cotorobai, F
de la Cruz, B
Csilling, A
Dai, TS
D'Alessandro, R
de Asmundis, R
Degre, A
Deiters, K
della Volpe, D
Denes, P
DeNotaristefani, F
Diemoz, M
van Dierendonck, D
Di Lodovico, F
Dionisi, C
Dittmar, M
Dominguez, A
Doria, A
Dova, MT
Duchesneau, D
Duinker, P
Duran, I
Dutta, S
Easo, S
El Mamouni, H
Engler, A
Eppling, FJ
Erne, FC
Ernenwein, JP
Extermann, P
Fabre, M
Faccini, R
Falciano, S
Favara, A
Fay, J
Fedin, O
Felcini, M
Ferguson, T
Ferroni, F
Fesefeldt, H
Fiandrini, E
Field, JH
Filthaut, F
Fisher, PH
Fisk, I
Forconi, G
Fredj, L
Freudenreich, K
Furetta, C
Galaktionov, Y
Ganguli, SN
Garcia-Abia, P
Gataullin, M
Gau, SS
Gentile, S
Gheordanescu, N
Giagu, S
Goldfarb, S
Goldstein, J
Gong, ZF
Gougas, A
Gratta, G
Gruenewald, MW
van Gulik, R
Gupta, VK
Gurtu, A
Gutay, LJ
Haas, D
Hartmann, B
Hasan, A
Hatzifotiadou, D
Hebbeker, T
Herve, A
Hirschfelder, J
van Hoek, WC
Hofer, H
Hoorani, H
Hou, SR
Hu, G
Innocente, V
Jenkes, K
Jin, BN
Jones, LW
de Jong, P
Josa-Mutuberria, I
Khan, RA
Kamrad, D
Kapustinsky, JS
Karyotakis, Y
Kaur, M
Kienzle-Focacci, MN
Kim, D
Kim, DH
Kim, JK
Kim, SC
Kinnison, WW
Kirkby, A
Kirkby, D
Kirkby, J
Kiss, D
Kittel, W
Klimentov, A
Konig, AC
Kopp, A
Korolko, I
Koutsenko, V
Kraemer, RW
Krenz, W
Kunin, A
Lacentre, P
de Guevara, PL
Laktineh, I
Landi, G
Lapoint, C
Lassila-Perini, K
Laurikainen, P
Lavorato, A
Lebeau, M
Lebedev, A
Lebrun, P
Lecomte, P
Lecoq, P
Le Coultre, P
Lee, HJ
Le Goff, JM
Leiste, R
Leonardi, E
Levtchenko, P
Li, C
Lin, CH
Lin, WT
Linde, FL
Lista, L
Liu, ZA
Lohmann, W
Longo, E
Lu, W
Lu, YS
Lubelsmeyer, K
Luci, C
Luckey, D
Luminari, L
Lustermann, W
Ma, WG
Maity, M
Majumder, G
Malgeri, L
Malinin, A
Mana, C
Mangeol, D
Mangla, S
Marchesini, P
Marian, G
Main, A
Martin, JP
Marzano, F
Massaro, GGG
McNally, D
McNeil, RR
Mele, S
Merola, L
Meschini, M
Metzger, WJ
von der Mey, M
Migani, D
Mihul, A
van Mil, AJW
Milcent, H
Mirabelli, G
Mnich, J
Molnar, P
Monteleoni, B
Moore, R
Moulik, T
Mount, R
Muheim, F
Muijs, AJM
Nahn, S
Napolitano, M
Nessi-Tedaldi, F
Newman, H
Niessen, T
Nippe, A
Nisati, A
Nowak, H
Oh, YD
Opitz, H
Organtini, G
Ostonen, R
Palit, S
Palomares, C
Pandoulas, D
Paoletti, S
Paolucci, P
Park, HK
Park, IH
Pascale, G
Passaleva, G
Patricelli, S
Paul, T
Pauluzzi, M
Paus, C
Pauss, F
Peach, D
Pei, YJ
Pensotti, S
Perret-Gallix, D
Petersen, B
Petrak, S
Pevsner, A
Piccolo, D
Pieri, M
Piroue, PA
Pistolesi, E
Plyaskin, V
Pohl, M
Pojidaev, V
Postema, H
Pothier, J
Produit, N
Prokofiev, D
Quartieri, J
Rahal-Callot, G
Raja, N
Rancoita, PG
Rattaggi, M
Raven, G
Razis, P
Ren, D
Rescigno, M
Reucroft, S
van Rhee, T
Riemann, S
Riles, K
Robohm, A
Rodin, J
Roe, BP
Romero, L
Rosier-Lees, S
Roth, S
Rubio, JA
Ruschmeier, D
Rykaczewski, H
Salicio, J
Sanchez, E
Sanders, MP
Sarakinos, ME
Sarkar, S
Schafer, C
Schegelsky, V
Schmidt-Kaerst, S
Schmitz, D
Scholz, N
Schopper, H
Schotanus, DJ
Schwenke, J
Schwering, G
Sciacca, C
Sciarrino, D
Servoli, L
Shevchenko, S
Shivarov, N
Shoutko, V
Shukla, J
Shumilov, E
Shvorob, A
Siedenburg, T
Son, D
Smith, B
Spillantini, P
Steuer, M
Stickland, DP
Stone, A
Stone, H
Stoyanov, B
Straessner, A
Sudhakar, K
Sultanov, G
Sun, LZ
Susinno, GF
Suter, H
Swain, JD
Tang, XW
Tauscher, L
Taylor, L
Ting, SCC
Ting, SM
Tonwar, SC
Toth, J
Tully, C
Tung, KL
Uchida, Y
Ulbricht, J
Uwer, U
Valente, E
Vesztergombi, G
Vetlitsky, I
Viertel, G
Vivargent, M
Vlachos, S
Volkert, R
Vogel, H
Vogt, H
Vorobiev, I
Vorobyov, AA
Vorvolakos, A
Wadhwa, M
Wallraff, W
Wang, JC
Wang, XL
Wang, ZM
Weber, A
Wu, SX
Wynhoff, S
Xu, J
Xu, ZZ
Yang, BZ
Yang, CG
Yao, XY
Ye, JB
Yeh, SC
You, JM
Zalite, A
Zalite, Y
Zemp, P
Zeng, Y
Zhang, Z
Zhang, ZP
Zhou, B
Zhu, GY
Zhu, RY
Zichichi, A
Ziegler, F
Zilizi, G
AF Acciarri, M
Adriani, O
Aguilar-Benitez, M
Ahlen, S
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Ambrosi, G
Anderhub, H
Andreev, VP
Angelescu, T
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Baksay, L
Banerjee, S
Banerjee, S
Banicz, K
Barczyk, A
Barillere, R
Barone, L
Bartalini, P
Baschirotto, A
Basile, M
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Bhattacharya, S
Biasini, M
Biland, A
Bilei, GM
Blaising, JJ
Blyth, SC
Bobbink, GJ
Bock, R
Bohm, A
Boldizsar, L
Borgia, B
Bourilkov, D
Bourquin, M
Braccini, S
Branson, JG
Brigljevic, V
Brock, IC
Buffini, A
Buijs, A
Burger, JD
Burger, WJ
Busenitz, J
Button, A
Cai, XC
Campanelli, M
Capell, M
Romeo, GC
Carlino, G
Cartacci, AM
Casaus, J
Castellini, G
Cavallari, F
Cavallo, N
Cecchi, C
Cerrada, M
Cesaroni, F
Chamizo, M
Chang, YH
Chaturvedi, UK
Chekanov, SV
Chemarin, M
Chen, A
Chen, G
Chen, GM
Chen, HF
Chen, HS
Chereau, X
Chiefari, G
Chien, CY
Cifarelli, L
Cindolo, F
Civinini, C
Clare, I
Clare, R
Coignet, G
Colijn, AP
Colino, N
Costantini, S
Cotorobai, F
de la Cruz, B
Csilling, A
Dai, TS
D'Alessandro, R
de Asmundis, R
Degre, A
Deiters, K
della Volpe, D
Denes, P
DeNotaristefani, F
Diemoz, M
van Dierendonck, D
Di Lodovico, F
Dionisi, C
Dittmar, M
Dominguez, A
Doria, A
Dova, MT
Duchesneau, D
Duinker, P
Duran, I
Dutta, S
Easo, S
El Mamouni, H
Engler, A
Eppling, FJ
Erne, FC
Ernenwein, JP
Extermann, P
Fabre, M
Faccini, R
Falciano, S
Favara, A
Fay, J
Fedin, O
Felcini, M
Ferguson, T
Ferroni, F
Fesefeldt, H
Fiandrini, E
Field, JH
Filthaut, F
Fisher, PH
Fisk, I
Forconi, G
Fredj, L
Freudenreich, K
Furetta, C
Galaktionov, Y
Ganguli, SN
Garcia-Abia, P
Gataullin, M
Gau, SS
Gentile, S
Gheordanescu, N
Giagu, S
Goldfarb, S
Goldstein, J
Gong, ZF
Gougas, A
Gratta, G
Gruenewald, MW
van Gulik, R
Gupta, VK
Gurtu, A
Gutay, LJ
Haas, D
Hartmann, B
Hasan, A
Hatzifotiadou, D
Hebbeker, T
Herve, A
Hirschfelder, J
van Hoek, WC
Hofer, H
Hoorani, H
Hou, SR
Hu, G
Innocente, V
Jenkes, K
Jin, BN
Jones, LW
de Jong, P
Josa-Mutuberria, I
Khan, RA
Kamrad, D
Kapustinsky, JS
Karyotakis, Y
Kaur, M
Kienzle-Focacci, MN
Kim, D
Kim, DH
Kim, JK
Kim, SC
Kinnison, WW
Kirkby, A
Kirkby, D
Kirkby, J
Kiss, D
Kittel, W
Klimentov, A
Konig, AC
Kopp, A
Korolko, I
Koutsenko, V
Kraemer, RW
Krenz, W
Kunin, A
Lacentre, P
de Guevara, PL
Laktineh, I
Landi, G
Lapoint, C
Lassila-Perini, K
Laurikainen, P
Lavorato, A
Lebeau, M
Lebedev, A
Lebrun, P
Lecomte, P
Lecoq, P
Le Coultre, P
Lee, HJ
Le Goff, JM
Leiste, R
Leonardi, E
Levtchenko, P
Li, C
Lin, CH
Lin, WT
Linde, FL
Lista, L
Liu, ZA
Lohmann, W
Longo, E
Lu, W
Lu, YS
Lubelsmeyer, K
Luci, C
Luckey, D
Luminari, L
Lustermann, W
Ma, WG
Maity, M
Majumder, G
Malgeri, L
Malinin, A
Mana, C
Mangeol, D
Mangla, S
Marchesini, P
Marian, G
Main, A
Martin, JP
Marzano, F
Massaro, GGG
McNally, D
McNeil, RR
Mele, S
Merola, L
Meschini, M
Metzger, WJ
von der Mey, M
Migani, D
Mihul, A
van Mil, AJW
Milcent, H
Mirabelli, G
Mnich, J
Molnar, P
Monteleoni, B
Moore, R
Moulik, T
Mount, R
Muheim, F
Muijs, AJM
Nahn, S
Napolitano, M
Nessi-Tedaldi, F
Newman, H
Niessen, T
Nippe, A
Nisati, A
Nowak, H
Oh, YD
Opitz, H
Organtini, G
Ostonen, R
Palit, S
Palomares, C
Pandoulas, D
Paoletti, S
Paolucci, P
Park, HK
Park, IH
Pascale, G
Passaleva, G
Patricelli, S
Paul, T
Pauluzzi, M
Paus, C
Pauss, F
Peach, D
Pei, YJ
Pensotti, S
Perret-Gallix, D
Petersen, B
Petrak, S
Pevsner, A
Piccolo, D
Pieri, M
Piroue, PA
Pistolesi, E
Plyaskin, V
Pohl, M
Pojidaev, V
Postema, H
Pothier, J
Produit, N
Prokofiev, D
Quartieri, J
Rahal-Callot, G
Raja, N
Rancoita, PG
Rattaggi, M
Raven, G
Razis, P
Ren, D
Rescigno, M
Reucroft, S
van Rhee, T
Riemann, S
Riles, K
Robohm, A
Rodin, J
Roe, BP
Romero, L
Rosier-Lees, S
Roth, S
Rubio, JA
Ruschmeier, D
Rykaczewski, H
Salicio, J
Sanchez, E
Sanders, MP
Sarakinos, ME
Sarkar, S
Schafer, C
Schegelsky, V
Schmidt-Kaerst, S
Schmitz, D
Scholz, N
Schopper, H
Schotanus, DJ
Schwenke, J
Schwering, G
Sciacca, C
Sciarrino, D
Servoli, L
Shevchenko, S
Shivarov, N
Shoutko, V
Shukla, J
Shumilov, E
Shvorob, A
Siedenburg, T
Son, D
Smith, B
Spillantini, P
Steuer, M
Stickland, DP
Stone, A
Stone, H
Stoyanov, B
Straessner, A
Sudhakar, K
Sultanov, G
Sun, LZ
Susinno, GF
Suter, H
Swain, JD
Tang, XW
Tauscher, L
Taylor, L
Ting, SCC
Ting, SM
Tonwar, SC
Toth, J
Tully, C
Tung, KL
Uchida, Y
Ulbricht, J
Uwer, U
Valente, E
Vesztergombi, G
Vetlitsky, I
Viertel, G
Vivargent, M
Vlachos, S
Volkert, R
Vogel, H
Vogt, H
Vorobiev, I
Vorobyov, AA
Vorvolakos, A
Wadhwa, M
Wallraff, W
Wang, JC
Wang, XL
Wang, ZM
Weber, A
Wu, SX
Wynhoff, S
Xu, J
Xu, ZZ
Yang, BZ
Yang, CG
Yao, XY
Ye, JB
Yeh, SC
You, JM
Zalite, A
Zalite, Y
Zemp, P
Zeng, Y
Zhang, Z
Zhang, ZP
Zhou, B
Zhu, GY
Zhu, RY
Zichichi, A
Ziegler, F
Zilizi, G
CA L3 Collaboration
TI Search for new physics phenomena in fermion-pair production at LEP
SO PHYSICS LETTERS B
LA English
DT Article
ID E+E ANNIHILATION; L3 EXPERIMENT; LEPTOQUARKS; QUARK
AB The measurements of hadron and lepton-pair production cross sections and lepton-pair forward-backward asymmetries performed with the L3 detector at centre-of-mass energies between 130 GeV and 172 GeV are used to search for new physics phenomena. New physics effects involving four fermion vertices - contact interactions - are looked for in all channels. For hadron production the exchange of virtual leptoquarks and scalar quarks is studied. No evidence for deviations from the Standard Model expectations is found. Lower limits on the scale Lambda of contact interactions in the range 1.2-7.1 TeV are obtained at the 95% confidence level for various models. Upper limits on the coupling strengths of leptoquarks and scalar quarks are derived. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany.
Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany.
NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands.
Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands.
Univ Michigan, Ann Arbor, MI 48109 USA.
Lab Annecy Le Vieux Phys Particules, LAPP, CNRS, IN2P3, F-74941 Annecy Le Vieux, France.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Basel, Inst Phys, CH-4056 Basel, Switzerland.
Louisiana State Univ, Baton Rouge, LA 70803 USA.
Inst High Energy Phys, Beijing 100039, Peoples R China.
Humboldt Univ, D-10099 Berlin, Germany.
Univ Bologna, I-40126 Bologna, Italy.
Ist Nazl Fis Nucl, I-40126 Bologna, Italy.
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
Boston Univ, Boston, MA 02215 USA.
Northeastern Univ, Boston, MA 02115 USA.
Inst Atom Phys, R-76900 Bucharest, Romania.
Univ Bucharest, R-76900 Bucharest, Romania.
Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary.
MIT, Cambridge, MA 02139 USA.
Ist Nazl Fis Nucl, I-50125 Florence, Italy.
Univ Florence, I-50125 Florence, Italy.
CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland.
World Lab, FBLJA Project, CH-1211 Geneva 23, Switzerland.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Univ Sci & Technol China, USTC, Hefei 230029, Anhui, Peoples R China.
SEFT, Res Inst High Energy Phys, SF-00014 Helsinki, Finland.
Univ Lausanne, CH-1015 Lausanne, Switzerland.
Ist Nazl Fis Nucl, I-73100 Lecce, Italy.
Univ Lecce, I-73100 Lecce, Italy.
Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
Univ Claude Bernard, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France.
CIEMAT, Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain.
Ist Nazl Fis Nucl, I-20133 Milan, Italy.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Ist Nazl Fis Nucl, I-80125 Naples, Italy.
Univ Naples Federico II, I-80125 Naples, Italy.
Univ Cyprus, Dept Nat Sci, Nicosia, Cyprus.
Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands.
Natl Inst Nucl Phys & High Energy Phys, NL-6525 ED Nijmegen, Netherlands.
CALTECH, Pasadena, CA 91125 USA.
Ist Nazl Fis Nucl, I-06100 Perugia, Italy.
Univ Perugia, I-06100 Perugia, Italy.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Princeton Univ, Princeton, NJ 08544 USA.
Ist Nazl Fis Nucl, I-00185 Rome, Italy.
Univ Roma La Sapienza, I-00185 Rome, Italy.
Russian Acad Sci, Inst Nucl Phys, St Petersburg, Russia.
Univ Salerno, I-84100 Salerno, Italy.
INFN, I-84100 Salerno, Italy.
Univ Calif San Diego, La Jolla, CA 92093 USA.
Univ Santiago, Dept Fis Particulas Elementales, E-15706 Santiago, Spain.
Bulgarian Acad Sci, Cent Lab Mechatron & Instrumentat, BU-1113 Sofia, Bulgaria.
Korea Adv Inst Sci & Technol, Ctr High Energy Phys, Taejon 305701, South Korea.
Univ Alabama, Tuscaloosa, AL 35486 USA.
Univ Utrecht, NL-3584 CB Utrecht, Netherlands.
NIKHEF H, NL-3584 CB Utrecht, Netherlands.
Purdue Univ, W Lafayette, IN 47907 USA.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
DESY, Inst Hochenergiephys, D-15738 Zeuthen, Germany.
Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.
Univ Hamburg, D-22761 Hamburg, Germany.
Natl Cent Univ, Chungli 32054, Taiwan.
Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan.
RP Acciarri, M (reprint author), Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany.
RI Sanchez, Eusebio/H-5228-2015; Duran, Ignacio/H-7254-2015; Rancoita, Pier
Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Palomares,
Carmen/H-7783-2015; Fedin, Oleg/H-6753-2016; Roth, Stefan/J-2757-2016;
Di Lodovico, Francesca/L-9109-2016; Fiandrini, Emanuele/C-4549-2008;
Lista, Luca/C-5719-2008; Berdugo, Javier/A-2858-2015; D'Alessandro,
Raffaello/F-5897-2015; Kirkby, Jasper/A-4973-2012; Servoli,
Leonello/E-6766-2012; bertucci, bruna/J-5237-2012; Cavallo,
Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; Josa,
Isabel/K-5184-2014; de la Cruz, Begona/K-7552-2014; Vogel,
Helmut/N-8882-2014; Ferguson, Thomas/O-3444-2014
OI Castellini, Guido/0000-0002-0177-0643; Diemoz,
Marcella/0000-0002-3810-8530; Doria, Alessandra/0000-0002-5381-2649;
Sciacca, Crisostomo/0000-0002-8412-4072; Faccini,
Riccardo/0000-0003-2613-5141; Della Volpe, Domenico/0000-0001-8530-7447;
Bertucci, Bruna/0000-0001-7584-293X; Filthaut,
Frank/0000-0003-3338-2247; Goldstein, Joel/0000-0003-1591-6014; Sanchez,
Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283;
Palomares, Carmen/0000-0003-4374-9065; Roth, Stefan/0000-0003-3616-2223;
Di Lodovico, Francesca/0000-0003-3952-2175; Longo,
Egidio/0000-0001-6238-6787; Ambrosi, Giovanni/0000-0001-6977-9559;
Berdugo, Javier/0000-0002-7911-8532; D'Alessandro,
Raffaello/0000-0001-7997-0306; Kirkby, Jasper/0000-0003-2341-9069;
Servoli, Leonello/0000-0003-1725-9185; Cerrada,
Marcos/0000-0003-0112-1691; Vogel, Helmut/0000-0002-6109-3023; Ferguson,
Thomas/0000-0001-5822-3731
NR 33
TC 25
Z9 25
U1 1
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-2693
EI 1873-2445
J9 PHYS LETT B
JI Phys. Lett. B
PD AUG 6
PY 1998
VL 433
IS 1-2
BP 163
EP 175
DI 10.1016/S0370-2693(98)00641-8
PG 13
WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 107ED
UT WOS:000075193300023
ER
PT J
AU Drangmeister, KU
Krumke, SO
Marathe, MV
Noltemeier, H
Ravi, SS
AF Drangmeister, KU
Krumke, SO
Marathe, MV
Noltemeier, H
Ravi, SS
TI Modifying edges of a network to obtain short subgraphs
SO THEORETICAL COMPUTER SCIENCE
LA English
DT Article; Proceedings Paper
CT 22nd International Workshop on Graph-Theoretic Concepts in Computer
Science (WG 96)
CY JUN 12-14, 1996
CL CADENABBIA, ITALY
SP Univ Roma La Sapienza, Dipt Informat & Sistemist, CNR, European Union, TMR Programme
DE NP-hardness; approximation algorithms; network design; spanning-tree
ID COMPUTATION; ALGORITHMS; GRAPHS; DESIGN; TIME
AB This paper considers problems of the following type: We are given an edge weighted graph G=(V,E). It is assumed that each edge e of the given network has an associated function c(e) that specifies the cost of shortening the edge by a given amount and that there is a budget B on the total reduction cost. The goal is to develop a reduction strategy satisfying the budget constraint so that the total length of a minimum spanning tree in the modified network is the smallest possible over all reduction strategies that obey the budget constraint.
We show that in general the problem of computing an optimal reduction strategy for modifying the network as above is NP-hard even for simple classes of graphs and linear functions c(e). We present the first polynomial time approximation algorithms for the problem, where the cost functions c(e) are allowed to be taken from a broad class of functions. We also present improved approximation algorithms for the class of treewidth-bounded graphs when the cost functions are linear. Our results can be extended to obtain approximation algorithms for more general network design problems such as Steiner trees and generalized Steiner networks. (C) 1998-Elsevier Science B.V. All rights reserved.
C1 Univ Wurzburg, Dept Comp Sci, D-97074 Wurzburg, Germany.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
SUNY Albany, Dept Comp Sci, Albany, NY 12222 USA.
RP Krumke, SO (reprint author), Univ Wurzburg, Dept Comp Sci, D-97074 Wurzburg, Germany.
EM krumke@informatik.uni-wuerzburg.de
NR 24
TC 12
Z9 13
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3975
J9 THEOR COMPUT SCI
JI Theor. Comput. Sci.
PD AUG 6
PY 1998
VL 203
IS 1
BP 91
EP 121
DI 10.1016/S0304-3975(97)00290-9
PG 31
WC Computer Science, Theory & Methods
SC Computer Science
GA ZY725
UT WOS:000074653100006
ER
PT J
AU Kim, R
Kim, KK
Yokota, H
Kim, SH
AF Kim, R
Kim, KK
Yokota, H
Kim, SH
TI Small heat shock protein of Methanococcus jannaschii, a hyperthermophile
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
ID ALPHA-CRYSTALLIN; DIOSCOREOPHYLLUM-CUMMINSII; MOLECULAR CHAPERONE; SWEET
PRINCIPLE; IN-VITRO; FAMILY; THERMOTOLERANCE; EVOLUTION
AB Small heat shock proteins (sHSPs) belong to a family of 12- to 43-kDa proteins that are ubiquitous and are conserved in amino acid sequence among all organisms. A sHSP homologue of Methanococcus jannaschii, a hyperthermophilic Archaeon, forms a homogeneous multimer comprised of 24 monomers with a molecular mass of 400 kDa in contrast to other sHSPs that show heterogeneous oligomeric complexes. Electron microscopy analysis revealed a spherically shaped oligomeric structure approximate to 15-20 nm in diameter. The protein confers thermal protection of other proteins in vitro as found in other sHSPs. Escherichia coli cell extracts containing the protein were protected from heat-denatured precipitation when heated up to 100 degrees C, whereas extracts from cells not expressing the protein were heat-sensitive at 60 degrees C. Similar results were obtained when purified sHSP protein was added to an E. coli cell lysate. The protein also prevented the aggregation of two purified proteins: single-chain monellin (SCM) at 80 degrees C and citrate synthase at 40 degrees C.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Kim, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
EM r_kim@lbl.gov
NR 33
TC 123
Z9 130
U1 0
U2 12
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD AUG 4
PY 1998
VL 95
IS 16
BP 9129
EP 9133
DI 10.1073/pnas.95.16.9129
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 108BR
UT WOS:000075246600015
PM 9689045
ER
PT J
AU Hagen, TM
Ingersoll, RT
Wehr, CM
Lykkesfeldt, J
Vinarsky, V
Bartholomew, JC
Song, MH
Ames, BN
AF Hagen, TM
Ingersoll, RT
Wehr, CM
Lykkesfeldt, J
Vinarsky, V
Bartholomew, JC
Song, MH
Ames, BN
TI Acetyl-L-carnitine fed to old rats partially restores mitochondrial
function and ambulatory activity
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
ID OXIDATIVE STRESS; HEART MITOCHONDRIA; TRANSLOCASE; RESTRICTION; CELLS;
ACID
AB Mitochondrial function and ambulatory activity were monitored after feeding old rats acetyl-L-carnitine (ALCAR). Young (3-5 mo) and old (22-28 mo) rats were given a 1.5% (wt/vol) solution of ALCAR in their drinking water for 1 mo, were sacrificed, and their liver parenchymal cells were isolated. ALCAR supplementation significantly reverses the age-associated decline of mitochondrial membrane potential, as assessed by rhodamine 123 staining. Cardiolipin, which declines significantly with age, is also restored. ALCAR increases cellular oxygen consumption, which declines with age, to the level of young rats. However, the oxidant production per oxygen consumed, as measured by 2',7'-dichlorofluorescin fluorescence levels, is approximate to 30% higher than in untreated old sees. Cellular glutathione and ascorbate levels were nearly 30% and 50% lower, respectively, in cells from ALCAR-supplemented old rats than in untreated old rats, further indicating that ALCAR supplementation might increase oxidative stress. Ambulatory activity in young and old rats was quantified as a general measure of metabolic activity, Ambulatory activity, defined as mean total distance traveled, in old rats is almost 3-fold lower than in young animals. ALCAR supplementation increases ambulatory activity significantly in both young and old rats, with the increase being larger in old rats. Thus, ALCAR supplementation to old rats markedly reverses the age-associated decline in many indices of mitochondrial function and general metabolic activity, but may increase oxidative stress.
C1 Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Ames, BN (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 229 Stanley Hall, Berkeley, CA 94720 USA.
EM bnames@uclink4.berkeley.edu
RI Lykkesfeldt, Jens/A-1072-2011
OI Lykkesfeldt, Jens/0000-0002-6514-8407
FU NCI NIH HHS [CA 39910]; NIEHS NIH HHS [ES01896, P30 ES001896]
NR 30
TC 188
Z9 194
U1 0
U2 4
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD AUG 4
PY 1998
VL 95
IS 16
BP 9562
EP 9566
DI 10.1073/pnas.95.16.9562
PG 5
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 108BR
UT WOS:000075246600090
PM 9689120
ER
PT J
AU Hoagland, RG
Baskes, MI
AF Hoagland, RG
Baskes, MI
TI An atomistic study of the effects of stress and hydrogen on a
dislocation lock in nickel
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID EMBEDDED-ATOM METHOD; DEFECTS; METALS
C1 Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
Sandia Natl Labs, Mat Reliabil Dept, Livermore, CA 94551 USA.
RP Hoagland, RG (reprint author), Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
RI Hoagland, Richard/G-9821-2012
NR 13
TC 21
Z9 22
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 417
EP 422
DI 10.1016/S1359-6462(98)00216-4
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100007
ER
PT J
AU Kocks, UF
AF Kocks, UF
TI Solute drag as an upper bound to high-temperature strength
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TX
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID FLOW
C1 Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87545 USA.
RP Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87545 USA.
RI Kocks, Fred/E-1159-2011
NR 15
TC 3
Z9 3
U1 0
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 431
EP 436
DI 10.1016/S1359-6462(98)00218-8
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100009
ER
PT J
AU Heinisch, HL
Hoagland, RG
Kurtz, RJ
Hirth, JP
AF Heinisch, HL
Hoagland, RG
Kurtz, RJ
Hirth, JP
TI Computer simulation of a [110] edge dislocation intersecting a Sigma 11
< 101 >{131} grain boundary in aluminum
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
C1 Pacific NW Lab, Richland, WA 99352 USA.
Washington State Univ, Pullman, WA 99164 USA.
RP Heinisch, HL (reprint author), Pacific NW Lab, POB 999, Richland, WA 99352 USA.
RI Hoagland, Richard/G-9821-2012
NR 4
TC 5
Z9 5
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 451
EP 456
DI 10.1016/S1359-6462(98)00221-8
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100012
ER
PT J
AU Sun, S
Adams, BL
Shet, C
Saigal, S
King, W
AF Sun, S
Adams, BL
Shet, C
Saigal, S
King, W
TI Mesoscale investigation of the deformation field of an aluminum
bicrystal
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID POLYCRYSTALLINE
C1 Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Sun, S (reprint author), Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
NR 16
TC 40
Z9 40
U1 0
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 501
EP 508
DI 10.1016/S1359-6462(98)00189-4
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100019
ER
PT J
AU Mitchell, TE
Donlon, WT
Heuer, AH
AF Mitchell, TE
Donlon, WT
Heuer, AH
TI Solution softening in spinel
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID CRYSTALS
C1 Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87545 USA.
Ford Motor Co, Sci Res Lab, Dearborn, MI 48121 USA.
Case Western Reserve Univ, Dept Mat Sci & Engn, Cleveland, OH 44106 USA.
RP Mitchell, TE (reprint author), Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, MS K765, Los Alamos, NM 87545 USA.
NR 21
TC 4
Z9 4
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 537
EP 544
DI 10.1016/S1359-6462(98)00194-8
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100024
ER
PT J
AU Misra, A
Verdier, M
Lu, YC
Kung, H
Mitchell, TE
Nastasi, N
Embury, JD
AF Misra, A
Verdier, M
Lu, YC
Kung, H
Mitchell, TE
Nastasi, N
Embury, JD
TI Structure and mechanical properties of Cu-X (X = Nb,Cr,Ni) nanolayered
composites
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID THIN-FILMS; DEFORMATION; STRENGTH; GRAIN; SCALE; SIZE
C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Misra, A (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, MS K765, Los Alamos, NM 87545 USA.
RI Misra, Amit/H-1087-2012
NR 19
TC 222
Z9 228
U1 4
U2 63
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 555
EP 560
DI 10.1016/S1359-6462(98)00196-1
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100026
ER
PT J
AU Yoo, MH
AF Yoo, MH
TI Dislocation mechanisms for deformation twinning in the L1(0) structure
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TX
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID TIAL SINGLE-CRYSTALS; TEMPERATURE-DEPENDENCE; ELASTIC-CONSTANTS; YIELD
STRESS
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
RP Yoo, MH (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA.
NR 37
TC 11
Z9 11
U1 3
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 569
EP 575
DI 10.1016/S1359-6462(98)00198-5
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100028
ER
PT J
AU Hoagland, RG
Voter, AF
Foiles, SM
AF Hoagland, RG
Voter, AF
Foiles, SM
TI Self-diffusion within the cores of a dissociated glide dislocation in an
FCC solid
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
C1 Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Sandia Natl Labs, Computat Mat Sci Dept, Livermore, CA 94551 USA.
RP Hoagland, RG (reprint author), Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
RI Hoagland, Richard/G-9821-2012;
OI Foiles, Stephen/0000-0002-1907-454X
NR 10
TC 13
Z9 13
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 589
EP 596
DI 10.1016/S1359-6462(98)00201-2
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100031
ER
PT J
AU Hsiung, LM
Lassila, DH
AF Hsiung, LM
Lassila, DH
TI Shock-induced displacive: Transformations in tantalum and
tantalum-tungsten alloys
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID OMEGA-PHASE
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Hsiung, LM (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-370, Livermore, CA 94551 USA.
NR 10
TC 16
Z9 19
U1 0
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 603
EP 609
DI 10.1016/S1359-6462(98)00203-6
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100033
ER
PT J
AU Kotula, PG
Carter, CB
Chen, KC
Thoma, DJ
Chu, F
Mitchell, TE
AF Kotula, PG
Carter, CB
Chen, KC
Thoma, DJ
Chu, F
Mitchell, TE
TI Defects and site occupancies in Nb-Cr-Ti C15 laves phase alloys
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID STACKING-FAULT ENERGY; MECHANICAL-PROPERTIES; NBCR2; DEFORMATION;
COMPOSITES; ELEMENTS; CR2NB
C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Kotula, PG (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, MS K765, Los Alamos, NM 87545 USA.
RI Carter, C. Barry/E-6478-2010; Kotula, Paul/A-7657-2011
OI Carter, C. Barry/0000-0003-4251-9102; Kotula, Paul/0000-0002-7521-2759
NR 25
TC 7
Z9 9
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 619
EP 623
DI 10.1016/S1359-6462(98)00205-X
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100035
ER
PT J
AU Kurtz, RJM
Hoagland, RG
AF Kurtz, RJM
Hoagland, RG
TI Effect of grain boundary dislocations on the sliding resistance of sigma
11 grain boundaries in aluminum
SO SCRIPTA MATERIALIA
LA English
DT Article; Proceedings Paper
CT Symposium on Defects in Crystals Honoring John Hirth at the TMS Annual
Meeting
CY FEB 16-19, 1998
CL SAN ANTONIO, TEXAS
SP TMS, Electr Magnet & Photon Mat Div, TMS, Struct Mat Div, TMS, Chem & Phy Mat Comm, TMS, Phys Met Comm, TMS, Shaping & Forming Comm, Pacific NW Natl Lab, Washington State Univ, Natl Sci Fdn
ID LATTICE DISLOCATIONS; BICRYSTALS
C1 Pacific NW Lab, Richland, WA 99352 USA.
Washington State Univ, Pullman, WA 99164 USA.
RP Kurtz, RJM (reprint author), Pacific NW Lab, POB 999, Richland, WA 99352 USA.
RI Hoagland, Richard/G-9821-2012
NR 12
TC 15
Z9 15
U1 1
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD AUG 4
PY 1998
VL 39
IS 4-5
BP 653
EP 659
DI 10.1016/S1359-6462(98)00210-3
PG 7
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 113QQ
UT WOS:000075563100040
ER
PT J
AU Lin, L
Han, K
AF Lin, L
Han, K
TI Optimization of surface properties by flame spray coating and boriding
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article
DE boriding; coating; diffusion; flame spray; nickel alloys; steel
ID NI ALLOYS; STEEL; LAYERS; PHASE
AB Investigations have been undertaken on the process of boriding of flame-sprayed coatings. The combination of flame-spraying and boriding has been shown to improve the mechanical properties, especially the surface properties of steels. The flame-spray process offered a good workability, whereas boriding enhanced the hardness, wear resistance and corrosion resistance of the surface, thus optimizing the surface properties. Different boriding media, boriding temperatures and times were compared. The optimum process conditions are suggested, based on the mechanical properties obtained for different conditions. The phase transformation procedure of boriding was investigated, based on the interstitial diffusion model, and the activation energy for the boriding was determined. (C) 1998 Elsevier Science S.A.
C1 Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87545 USA.
Shangdong Acad Sci, Inst New Mat, Jinan, Shandong, Peoples R China.
RP Han, K (reprint author), Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Mail Stop 765, Los Alamos, NM 87545 USA.
NR 14
TC 8
Z9 8
U1 0
U2 2
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD AUG 4
PY 1998
VL 106
IS 2-3
BP 100
EP 105
DI 10.1016/S0257-8972(98)00501-5
PG 6
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 121RK
UT WOS:000076027600003
ER
PT J
AU Sugama, T
AF Sugama, T
TI Y2O3-sealed Ni-Al protective coatings for Inconel 625
SO SURFACE & COATINGS TECHNOLOGY
LA English
DT Article
DE flame spray coating; nickel aluminum; oxidation; sol-gel pyrolysis;
yttrium oxide
AB The surfaces of flame-sprayed Ni-Al coatings deposited on to Inconel 625 substrates were sealed by Y2O3 film (0.5-1.5 mu m) derived pyrolytically from an yttrium acetate tetrahydrate-based precursor solution. Y2O3-sealed Ni-Al coating specimens were placed into an automated cyclic furnace and then subjected to heating-cooling cycle tests (one cycle = 12 h at 900 degrees C + 12 h at 25 degrees C) to evaluate the usefulness of this coating system in preventing oxidation of the underlying Inconel. After 75 cycles, the weight gains of sealed Ni-Al coatings were similar to 50% lower than those of unsealed coatings. Such effectiveness of the Y2O3 sealer in improving the efficacy of the Ni-Al protective coatings was due mainly to its reactivity with Al2O3 formed by oxidation of Al within the coatings. This selective reaction led to the formation of a crystalline YAlO3 phase. Extended oxidation resulted in the transformation of YAlO3 into the Y3Al5O12 phase as a result of a secondary reaction between YAlO3 and Al2O3. Consequently, the sealing layers consisting of Y2O3, YAlO3, and Y3Al5O12 contributed significantly to filling and eliminating inherent open spaces in the Ni-Al coatings, thereby suppressing the diffusion of oxygen through the pores. Such oxygen-impervious layers endow the Ni-Al layers with a long useful life-span as oxidation-resistant coatings for Inconel. (C) 1998 Elsevier Science S.A.
C1 Brookhaven Natl Lab, Dept Appl Sci, Energy Efficiency & Conservat Div, Upton, NY 11973 USA.
RP Sugama, T (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Energy Efficiency & Conservat Div, Upton, NY 11973 USA.
EM sugama@bnl.gov
NR 18
TC 12
Z9 13
U1 3
U2 15
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0257-8972
J9 SURF COAT TECH
JI Surf. Coat. Technol.
PD AUG 4
PY 1998
VL 106
IS 2-3
BP 106
EP 116
DI 10.1016/S0257-8972(98)00502-7
PG 11
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 121RK
UT WOS:000076027600004
ER
PT J
AU Schofield, MA
Aita, CR
Rice, PM
Gajdardziska-Josifovska, M
AF Schofield, MA
Aita, CR
Rice, PM
Gajdardziska-Josifovska, M
TI Transmission electron microscopy study of zirconia-alumina nanolaminates
grown by reactive sputter deposition. Part I: zirconia nanocrystallite
growth morphology
SO THIN SOLID FILMS
LA English
DT Article
DE growth mechanism; nanostructures; oxides; transmission electron
microscopy
ID KINETICS; SYSTEM; FILMS
AB Pure zirconia films and zirconia-alumina nanolaminate films grown by reactive sputter deposition are studied by high resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS). The phase composition and morphology associated with zirconia crystallite growth are investigated by examining films containing zirconia layers of varying thickness. These studies, performed at room temperature, suggest that the zirconia crystallites initially grow in the tetragonal phase to a critical size of 6.0 +/- 0.2 nm, in agreement with a value of 6.2 nm predicted by end-point thermodynamics. Past the critical size, incorporation of additional zirconia molecules into the zirconia layers is accomplished predominantly by transformation of the growing crystallites to the monoclinic phase, and less frequently by deposition of amorphous zirconia. Transformation to the monoclinic phase is accompanied by a highly faulted intermediary phase. The subsequent growth behavior of monoclinic crystallites is consistent with a three-dimensional intrface-controlled, diffusion-limited growth process with a growth exponent between 3 and 4. Nanoindentation measurements of nanolaminates with 5-nm thick zirconia lavers give a hardness of similar to 8 GPa for the upper strata where the morphology of the tetragonal zirconia layers contains an intrinsic roughness. The hardness increases to similar to 10 GPa closer to the substrate where the laminar morphology is more pronounced, Young's modulus is between 156 and 195 GPa for these same nanolaminates. (C) 1998 Elsevier Science S.A. All rights reserved.
C1 Univ Wisconsin, Surface Studies Lab, Milwaukee, WI 53201 USA.
Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA.
Univ Wisconsin, Dept Mat, Milwaukee, WI 53201 USA.
Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
RP Schofield, MA (reprint author), Univ Wisconsin, Surface Studies Lab, POB 413, Milwaukee, WI 53201 USA.
RI Gajdardziska-Josifovska, Marija/H-9586-2014
NR 27
TC 34
Z9 34
U1 0
U2 1
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD AUG 4
PY 1998
VL 326
IS 1-2
BP 106
EP 116
DI 10.1016/S0040-6090(98)00542-2
PG 11
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA 115YK
UT WOS:000075693800015
ER
PT J
AU Schofield, MA
Aita, CR
Rice, PM
Gajdardziska-Josifovska, M
AF Schofield, MA
Aita, CR
Rice, PM
Gajdardziska-Josifovska, M
TI Transmission electron microscopy study of zirconia-alumina nanolaminates
grown by reactive sputter deposition. Part II: transformation behavior
of tetragonal zirconia nanocrystallites
SO THIN SOLID FILMS
LA English
DT Article
DE nanostructures; oxides; phase transitions; transmission electron
microscopy (TEM)
ID SYSTEM
AB Zirconia-alumina multilayer films consisting of polycrystalline tetragonal zirconia and amorphous alumina were grown by reactive sputter deposition to study the transformation behavior of tetragonal zirconia nanocrystallites during in-situ electron beam irradiation and cooling experiments in a transmission electron microscope. It was found that the constraint provided by the alumina layers in the nanolaminate was important in the stabilization of the tetragonal phase of the zirconia during irradiation and cooling, and overrides the thermodynamic prediction based on an unconstrained crystallite model which governs the phase composition of zirconia crystallites during growth. A partial transformation of the tetragonal zirconia crystallites to the monoclinic phase was observed in cases where the alumina constraint is greatly relaxed due to knock-on damage to the alumina layers by the electron beam of the microscope. In extreme cases of alumina loss, re-crystallization of the zirconia occurred producing larger monoclinic zirconia crystallites. Fundamentally, the nano-sized zirconia crystallites present in the films under investigation were found to have a different transformation behavior compared to micron-sized dopant-stabilized tetragonal zirconia crystallites. (C) 1998 Elsevier Science S.A. All rights reserved.
C1 Univ Wisconsin, Surface Studies Lab, Milwaukee, WI 53201 USA.
Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA.
Univ Wisconsin, Dept Mat, Milwaukee, WI 53201 USA.
Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
RP Schofield, MA (reprint author), Univ Wisconsin, Surface Studies Lab, POB 413, Milwaukee, WI 53201 USA.
RI Gajdardziska-Josifovska, Marija/H-9586-2014
NR 20
TC 26
Z9 26
U1 0
U2 6
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0040-6090
J9 THIN SOLID FILMS
JI Thin Solid Films
PD AUG 4
PY 1998
VL 326
IS 1-2
BP 117
EP 125
DI 10.1016/S0040-6090(98)00519-7
PG 9
WC Materials Science, Multidisciplinary; Materials Science, Coatings &
Films; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Physics
GA 115YK
UT WOS:000075693800016
ER
PT J
AU Tallarek, U
van Dusschoten, D
Van As, H
Guiochon, G
Bayer, E
AF Tallarek, U
van Dusschoten, D
Van As, H
Guiochon, G
Bayer, E
TI Direct observation of fluid mass transfer resistance in porous media by
NMR spectroscopy
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE analytical methods; liquid chromatography mass transfer; NMR
spectroscopy; porous materials
ID PACKED-BEDS; TRANSPORT
C1 Univ Tubingen, Inst Organ Chem, D-72076 Tubingen, Germany.
Agr Univ Wageningen, Dept Mol Phys, NL-6703 HA Wageningen, Netherlands.
Agr Univ Wageningen, Wageningen NMR Ctr, NL-6703 HA Wageningen, Netherlands.
Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA.
RP Bayer, E (reprint author), Univ Tubingen, Inst Organ Chem, Morgenstelle 18, D-72076 Tubingen, Germany.
RI Van As, Henk/A-2787-2013
OI Van As, Henk/0000-0003-1076-391X
NR 16
TC 20
Z9 20
U1 0
U2 7
PU WILEY-V C H VERLAG GMBH
PI BERLIN
PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY
SN 1433-7851
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PD AUG 3
PY 1998
VL 37
IS 13-14
BP 1882
EP 1885
DI 10.1002/(SICI)1521-3773(19980803)37:13/14<1882::AID-ANIE1882>3.0.CO;2-U
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 109NX
UT WOS:000075330000022
ER
PT J
AU Hegarty, SP
Huyet, G
McInerney, JG
Choquette, KD
Geib, KM
Hou, HQ
AF Hegarty, SP
Huyet, G
McInerney, JG
Choquette, KD
Geib, KM
Hou, HQ
TI Size dependence of transverse mode structure in oxide-confined
vertical-cavity laser diodes
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SURFACE-EMITTING LASERS; SELECTIVE OXIDATION; THRESHOLD CURRENT
AB We analyze the transverse mode structure of selectively oxidized vertical-cavity surface-emitting semiconductor lasers as a function of the aperture size and injection current. Measurements of the spectral splittings, the near and far field sizes and the response to pulsed operation demonstrate that a parasitic thermal lens can be a dominant factor in determining the transverse resonator properties of small (< 3 mu m) lasers. (C) 1998 American Institute of Physics.
C1 Natl Univ Ireland Univ Coll Cork, Dept Phys, Cork, Ireland.
Sandia Natl Labs, Dept Photon Res, Albuquerque, NM 87185 USA.
RP Hegarty, SP (reprint author), Natl Univ Ireland Univ Coll Cork, Dept Phys, Cork, Ireland.
NR 12
TC 15
Z9 16
U1 0
U2 2
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 3
PY 1998
VL 73
IS 5
BP 596
EP 598
DI 10.1063/1.121867
PG 3
WC Physics, Applied
SC Physics
GA 108CV
UT WOS:000075249200014
ER
PT J
AU Vanheusden, K
Warren, WL
Fleetwood, DM
Schwank, JR
Shaneyfelt, MR
Draper, BL
Winokur, PS
Devine, RAB
Archer, LB
Brown, GA
Wallace, RM
AF Vanheusden, K
Warren, WL
Fleetwood, DM
Schwank, JR
Shaneyfelt, MR
Draper, BL
Winokur, PS
Devine, RAB
Archer, LB
Brown, GA
Wallace, RM
TI Chemical kinetics of mobile-proton generation and annihilation in SiO2
thin films
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID INTERFACE; MECHANISM
AB The chemical kinetics of mobile-proton reactions in the SiO2 film of Si/SiO2/Si structures were analyzed as a function of forming-gas anneal parameters in the 300-600 degrees C temperature range. Our data show that the initial buildup of mobile protons is limited by the rate of lateral hydrogen diffusion into the SiO2 films. The final density of mobile protons is determined by the cooling rate which terminates the annealing process and, in the case of subsequent anneals, by the temperature of the final anneal. To explain the observations, we propose a dynamical equilibrium model which assumes a reversible interfacial reaction with a temperature-dependent balance. (C) 1998 American Institute of Physics. [S0003-6951(98)02830-7].
C1 USAF, Res Lab, Kirtland AFB, NM 87117 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
France Telecom, Ctr Natl Etud Telecommun, F-38243 Meylan, France.
Texas Instruments Inc, Dallas, TX 75243 USA.
RP Vanheusden, K (reprint author), USAF, Res Lab, Kirtland AFB, NM 87117 USA.
RI Wallace, Robert/A-5283-2008
OI Wallace, Robert/0000-0001-5566-4806
NR 14
TC 17
Z9 17
U1 0
U2 0
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 3
PY 1998
VL 73
IS 5
BP 674
EP 676
DI 10.1063/1.121944
PG 3
WC Physics, Applied
SC Physics
GA 108CV
UT WOS:000075249200040
ER
PT J
AU Kwon, C
Gim, Y
Fan, Y
Hundley, MF
Roper, JM
Arendt, PN
Jia, QX
AF Kwon, C
Gim, Y
Fan, Y
Hundley, MF
Roper, JM
Arendt, PN
Jia, QX
TI Effect of in-plane epitaxy on magnetotransport properties of
(La0.5Sr0.5)CoO3 thin films
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID YTTRIA-STABILIZED-ZIRCONIA; HETEROSTRUCTURES; SI
AB We have systematically studied the temperature- and magnetic field-dependent resistance in (La0.5Sr0.5)CoO3 (LSCO) films with various degrees of in-plane texturing using the biaxially oriented LSCO on CeO2/YSZ/SiO2/Si substrates. We find that the ferromagnetic transition temperature, T-c, is much the same in all samples while the resistive transition exhibits metallic behavior (dR/dT > 0) in the epitaxial LSCO to semiconducting behavior (dR/dT < 0) in the poorly textured LSCO. The magnetoresistance (MR) in the epitaxial LSCO on a LaAlO3 substrate displays two distinct regions; the low field hysteretic MR related to the magnetization hysteresis and the high field linear negative MR due to the suppression of spin fluctuations. In contrast, the MR in the biaxially textured LSCO sample shows only the hysteretic behaviors at low fields and no linear MR at high fields. Compared to the polycrystalline-doped LaMnO3 which shows an enhanced MR at low fields, the MR in the biaxially oriented LSCO does not exhibit such characteristics. We attribute this to the differences in the spin polarization between LSCO and the doped LaMnO3. (C) 1998 American Institute of Physics. [S0003-6951(98)03931-X].
C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Kwon, C (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Mail Stop K763, Los Alamos, NM 87545 USA.
RI Kwon, Chuhee/A-8687-2008; Jia, Q. X./C-5194-2008
NR 14
TC 19
Z9 19
U1 2
U2 6
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG 3
PY 1998
VL 73
IS 5
BP 695
EP 697
DI 10.1063/1.121951
PG 3
WC Physics, Applied
SC Physics
GA 108CV
UT WOS:000075249200047
ER
PT J
AU Palmer, KS
Rostal, DC
Grumbles, JS
Mulvey, M
AF Palmer, KS
Rostal, DC
Grumbles, JS
Mulvey, M
TI Long-term sperm storage in the desert tortoise (Gopherus agassizii)
SO COPEIA
LA English
DT Article
ID OVIDUCT; POPULATIONS; TURTLE
C1 Georgia So Univ, Dept Biol, Statesboro, GA 30460 USA.
Savannah River Ecol Lab, Aiken, SC 29801 USA.
RP Rostal, DC (reprint author), Georgia So Univ, Dept Biol, POB 8042, Statesboro, GA 30460 USA.
NR 16
TC 28
Z9 30
U1 2
U2 2
PU AMER SOC ICHTHYOLOGISTS HERPETOLOGISTS BUSINESS OFFICE
PI CARBONDALE
PA SOUTHERN ILLINOIS UNIV, DEPT ZOOLOGY, CARBONDALE, IL 62901-6501 USA
SN 0045-8511
J9 COPEIA
JI Copeia
PD AUG 3
PY 1998
IS 3
BP 702
EP 705
DI 10.2307/1447800
PG 4
WC Zoology
SC Zoology
GA 109WU
UT WOS:000075348000016
ER
PT J
AU Jenssen, TA
Hovde, KA
Taney, KG
AF Jenssen, TA
Hovde, KA
Taney, KG
TI Size-related habitat use by nonbreeding Anolis carolinensis lizards
SO COPEIA
LA English
DT Article
ID MORPHOLOGY; BEHAVIOR; PERFORMANCE; EVOLUTION
C1 Virginia Polytech Inst & State Univ, Dept Biol, Blacksburg, VA 24061 USA.
Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
RP Jenssen, TA (reprint author), Virginia Polytech Inst & State Univ, Dept Biol, Blacksburg, VA 24061 USA.
NR 33
TC 18
Z9 20
U1 0
U2 6
PU AMER SOC ICHTHYOLOGISTS HERPETOLOGISTS BUSINESS OFFICE
PI CARBONDALE
PA SOUTHERN ILLINOIS UNIV, DEPT ZOOLOGY, CARBONDALE, IL 62901-6501 USA
SN 0045-8511
J9 COPEIA
JI Copeia
PD AUG 3
PY 1998
IS 3
BP 774
EP 779
DI 10.2307/1447814
PG 6
WC Zoology
SC Zoology
GA 109WU
UT WOS:000075348000030
ER
PT J
AU Gibbons, JW
Congdon, JD
AF Gibbons, JW
Congdon, JD
TI Joshua Laerm - 1942-1997 - Obituaries
SO COPEIA
LA English
DT Biographical-Item
C1 Savannah River Ecol Lab, Aiken, SC 29802 USA.
RP Gibbons, JW (reprint author), Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA.
NR 1
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC ICHTHYOLOGISTS HERPETOLOGISTS BUSINESS OFFICE
PI CARBONDALE
PA SOUTHERN ILLINOIS UNIV, DEPT ZOOLOGY, CARBONDALE, IL 62901-6501 USA
SN 0045-8511
J9 COPEIA
JI Copeia
PD AUG 3
PY 1998
IS 3
BP 821
EP 822
PG 2
WC Zoology
SC Zoology
GA 109WU
UT WOS:000075348000034
ER
PT J
AU Cowley, RA
Gehring, PM
Gibbs, D
Goff, JP
Lake, B
Majkrzak, CF
Vigliante, A
Ward, RCC
Wells, MR
AF Cowley, RA
Gehring, PM
Gibbs, D
Goff, JP
Lake, B
Majkrzak, CF
Vigliante, A
Ward, RCC
Wells, MR
TI The magnetic phase transition of a lattice-matched holmium thin film
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID 2 LENGTH SCALES; CRITICAL FLUCTUATIONS; X-RAY; T-N; SCATTERING; ORIGIN
AB Neutron and x-ray scattering measurements have been made of the magnetic phase transition in a thin single-crystal film of holmium. The 5000 Angstrom film was grown on a seed of a lutetium and yttrium alloy with a concentration chosen such that the basal plane was lattice matched to the holmium film. It was capped by 10 000 Angstrom of a similar film. The measurements below T-N gave the critical exponent beta = 0.37 +/- 0.03. Above T-N the scattering suggests that the anomalous long-length-scale scattering is at least 20 times weaker than has been observed in similar experiments on bulk and thin-film holmium. These results show that the long-length-scale scattering is associated with the crystallographic surface rather than the end of the magnetic layer. The implications of this result for the origin of this type of scattering are discussed.
C1 Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England.
NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA.
Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Cowley, RA (reprint author), Univ Oxford, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England.
OI Lake, Bella/0000-0003-0034-0964; Gehring, Peter/0000-0002-9236-2046
NR 16
TC 4
Z9 4
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD AUG 3
PY 1998
VL 10
IS 30
BP 6803
EP 6812
DI 10.1088/0953-8984/10/30/018
PG 10
WC Physics, Condensed Matter
SC Physics
GA 109MF
UT WOS:000075325800018
ER
PT J
AU Morgan, WF
Corcoran, J
Hartmann, I
Kaplan, MI
Limoli, CL
Ponnaiya, B
AF Morgan, WF
Corcoran, J
Hartmann, I
Kaplan, MI
Limoli, CL
Ponnaiya, B
TI DNA double-strand breaks, chromosomal rearrangements, and genomic
instability
SO MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS
LA English
DT Article; Proceedings Paper
CT 4th International Symposium on Chromosomal Aberrations
CY AUG 26-29, 1998
CL UNIV ESSEN, ESSEN, GERMANY
HO UNIV ESSEN
DE DNA double-strand break; chromosomal rearrangement; genomic instability
ID HAMSTER OVARY CELLS; IONIZING-RADIATION; ABERRATIONS; ENDONUCLEASES;
DAMAGE; DEATH
AB DNA double-strand breaks can lead to chromosomal rearrangements at the first mitosis after exposure to the DNA strand-breaking agent. The evidence suggests a number of different pathways for DNA double-strand break rejoining in mammalian cells, but it is unclear what factors determine the fate of the induced break and whether or not it will lead to chromosomal rearrangement. If a cell does survive and proliferate after DNA cleavage, delayed chromosomal instability can be observed in the clonal descendants of the exposed cell. Most, but not all DNA double-strand breaking agents are effective at inducing this delayed chromosomal instability. In this paper, we review the evidence for the role of the DNA double-strand break in directly induced and delayed chromosomal rearrangements. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Calif San Francisco, Dept Radiat Oncol, San Francisco, CA 94143 USA.
Univ Calif San Francisco, Dept Radiol, San Francisco, CA 94143 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
Univ Calif San Francisco, Grad Grp Biophys, San Francisco, CA 94143 USA.
RP Morgan, WF (reprint author), Univ Calif San Francisco, Dept Radiat Oncol, POB 0750, San Francisco, CA 94143 USA.
FU NIEHS NIH HHS [5-T32-ES07016]; NIGMS NIH HHS [GM 54189]
NR 14
TC 72
Z9 81
U1 1
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0027-5107
J9 MUTAT RES-FUND MOL M
JI Mutat. Res.-Fundam. Mol. Mech. Mutagen.
PD AUG 3
PY 1998
VL 404
IS 1-2
SI SI
BP 125
EP 128
DI 10.1016/S0027-5107(98)00104-3
PG 4
WC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology
SC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology
GA 113JE
UT WOS:000075546700018
PM 9729329
ER
PT J
AU Bardakci, K
AF Bardakci, K
TI String field equations from the generalized sigma model II
SO NUCLEAR PHYSICS B
LA English
DT Article
DE renormalization group; generalized sigma model; string field equations
ID RENORMALIZATION-GROUP EQUATION; WILSON; SPACE
AB We improve and extend a method introduced in an earlier paper for deriving string field equations. The idea is to impose conformal invariance on a generalized sigma model, using a background field method that ensures covariance under very general non-local coordinate transformations. The method is used to derive the free string equations, as well as the interacting equations for the graviton-dilaton system. The full interacting string field equations derived by this method should be manifestly background independent. (C) 1998 Elsevier Science B.V.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Bardakci, K (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
EM kbardakci@lbl.gov
NR 26
TC 4
Z9 4
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0550-3213
J9 NUCL PHYS B
JI Nucl. Phys. B
PD AUG 3
PY 1998
VL 524
IS 3
BP 545
EP 575
DI 10.1016/S0550-3213(98)00317-4
PG 31
WC Physics, Particles & Fields
SC Physics
GA 107AY
UT WOS:000075184700003
ER
PT J
AU Asbury, JB
Ghosh, HN
Yeston, JS
Bergman, RG
Lian, TQ
AF Asbury, JB
Ghosh, HN
Yeston, JS
Bergman, RG
Lian, TQ
TI Sub-picosecond IR study of the reactive intermediate in an alkane C-H
bond activation reaction by CpRh(CO)(2)
SO ORGANOMETALLICS
LA English
DT Article
ID INFRARED-SPECTROSCOPY; DICARBONYL COMPLEXES; OXIDATIVE ADDITION;
METAL-COMPLEXES; DYNAMICS; METHANE
AB The reactive intermediate in a cyclohexane C-H bond activation reaction by CpRh(CO)(2) has been identified as the cyclohexane solvate eta(5)-CPRh(CO)(C6H12) by sub-picosecond infrared spectroscopy.
C1 Emory Univ, Dept Chem, Atlanta, GA 30322 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Lian, TQ (reprint author), Emory Univ, Dept Chem, 1515 Pierce Dr, Atlanta, GA 30322 USA.
RI Lian, Tianquan/L-8992-2013; Ghosh, Hirendra/J-8776-2012
OI Lian, Tianquan/0000-0002-8351-3690;
NR 21
TC 40
Z9 40
U1 2
U2 16
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
J9 ORGANOMETALLICS
JI Organometallics
PD AUG 3
PY 1998
VL 17
IS 16
BP 3417
EP 3419
DI 10.1021/om980194f
PG 3
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 110JW
UT WOS:000075378500005
ER
PT J
AU Mobley, TA
Schade, C
Bergman, RG
AF Mobley, TA
Schade, C
Bergman, RG
TI Stereochemical investigations of the mechanism of C-H bond activation.
Diastereomeric and isotopic scrambling in (hydrido)alkyliridium
complexes
SO ORGANOMETALLICS
LA English
DT Article
ID LIQUID RARE-GASES; OXIDATIVE ADDITION; TRANSITION-METAL; TRANSIENT
CYCLOPENTADIENYLCARBONYLRHODIUM; REDUCTIVE ELIMINATION; MATRIX
PHOTOCHEMISTRY; METHANE ACTIVATION; HYDRIDE COMPLEXES; ALKANE; RHODIUM
AB The diastereomeric complexes (RS),(SR)-((2,2-dimethylcyclopropyl)(Cp*) (PMe3)IrH) (2a) and (RR),(SS)-((2,2-dimethylcyclopropyl)(Cp*) (PMe3)IrH) (2b) and their alpha-deuterated analogues (2a-alpha(d1), 2b-alpha(d1)) were synthesized in racemic form and separated by low-temperature (-80 degrees C) column chromatography. Thermolysis (140 degrees C) of diastereomerically pure 2a or 2b in C6D6 results in its interconversion to the other diastereomer. Thermolysis of the deuterium-labeled analogues 2a-alpha(d1) and 2b-alpha(d1) results additionally in scrambling of deuterium from the alpha-position of the dimethylcylopropyl ring to the metal hydride position. Diastereomer interconversion and isotopic scrambling occur at similar rates, which are faster than the rate observed for the reductive elimination of dimethylcyclopropane and subsequent oxidative addition of C6D6. Quantitative analysis of these rate data is reported. The similarity of these rates is discussed in terms of a common intermediate mechanism involving a metal alkane (or "sigma-alkane") complex. This mechanism is used as a basis far comparison of the rearrangement processes in the current iridium system and the previously reported analogous rhodium system.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Bergman, RG (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
NR 54
TC 18
Z9 18
U1 1
U2 2
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
J9 ORGANOMETALLICS
JI Organometallics
PD AUG 3
PY 1998
VL 17
IS 16
BP 3574
EP 3587
DI 10.1021/om980355f
PG 14
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 110JW
UT WOS:000075378500027
ER
PT J
AU Abe, K
Abe, K
Abe, T
Adam, I
Akagi, T
Allen, NJ
Arodzero, A
Ash, WW
Aston, D
Baird, KG
Baltay, C
Band, HR
Barakat, MB
Bardon, O
Barklow, TL
Bauer, JM
Bellodi, G
Ben-David, R
Benvenuti, AC
Bilei, GM
Bisello, D
Blaylock, G
Bogart, JR
Bolen, B
Bower, GR
Brau, JE
Breidenbach, M
Bugg, WM
Burke, D
Burnett, TH
Burrows, PN
Calcaterra, A
Caldwell, DO
Calloway, D
Camanzi, B
Carpinelli, M
Cassell, R
Castaldi, R
Castro, A
Cavalli-Sforza, M
Chou, A
Church, E
Cohn, HO
Coller, JA
Convery, MR
Cook, V
Cotton, R
Cowan, RF
Coyne, DG
Crawford, G
Damerell, CJS
Danielson, MN
Daoudi, M
de Groot, N
Dell'Orso, R
Dervan, PJ
de Sangro, R
Dima, M
D'Oliveira, A
Dong, DN
Du, PYC
Dubois, R
Eisenstein, BI
Eschenburg, V
Etzion, E
Fahey, S
Falciai, D
Fan, C
Fernandez, JP
Fero, MJ
Flood, K
Frey, R
Gillman, T
Gladding, G
Gonzalez, S
Hart, EL
Harton, JL
Hasan, A
Hasuko, K
Hedges, SJ
Hertzbach, SS
Hildreth, MD
Huber, J
Huffer, ME
Hughes, EW
Huynh, X
Hwang, H
Iwasaki, M
Jackson, DJ
Jacques, P
Jaros, JA
Jiang, ZY
Johnson, AS
Johnson, JR
Johnson, RA
Junk, T
Kajikawa, R
Kalelkar, M
Kamyshkov, Y
Kang, HJ
Karliner, I
Kawahara, H
Kim, YD
King, R
King, ME
Kofler, RR
Krishna, NM
Kroeger, RS
Langston, M
Lath, A
Leith, DWG
Lia, V
Lin, CJS
Liu, X
Liu, MX
Loreti, M
Lu, A
Lynch, HL
Ma, J
Mancinelli, G
Manly, S
Mantovani, G
Markiewicz, TW
Maruyama, T
Masuda, H
Mazzucato, E
McKemey, AK
Meadows, BT
Menegatti, G
Messner, R
Mockett, PM
Moffeit, KC
Moore, TB
Morii, M
Muller, D
Murzin, V
Nagamine, T
Narita, S
Nauenberg, U
Neal, H
Nussbaum, M
Oishi, N
Onoprienko, D
Osborne, LS
Panvini, RS
Park, H
Park, CH
Pavel, TJ
Peruzzi, I
Piccolo, M
PIemontese, L
Pieroni, E
Pitts, KT
Plano, RJ
Prepost, R
Prescott, CY
Punkar, GD
Quigley, J
Ratcliff, BN
Reeves, TW
Reidy, J
Reinertsen, PL
Rensing, PE
Rochester, LS
Rowson, PC
Russell, JJ
Saxton, OH
Schalk, T
Schindler, RH
Schumm, BA
Schwiening, J
Sen, S
Serbo, VV
Shaevitz, MH
Shank, JT
Shapiro, G
Sherden, DJ
Shmakov, KD
Simopoulos, C
Sinev, NB
Smith, SR
Smy, MB
Snyder, JA
Staengle, H
Stahl, A
Stamer, P
Steiner, H
Steiner, R
Strauss, MG
Su, D
Suekane, F
Sugiyama, A
Suzuki, S
Swartz, M
Szumilo, A
Takahashi, T
Taylor, FE
Thom, J
Torrence, E
Toumbas, NK
Trandafir, AI
Turk, JD
Usher, T
Vannini, C
Va'vra, J
Vella, E
Venuti, JP
Verdier, R
Verdini, PG
Wagner, SR
Wagner, DL
Waite, AP
Walston, S
Wang, J
Ward, C
Watts, SJ
Weidemann, AW
Weiss, ER
Whitaker, JS
White, SL
Wickens, FJ
Williams, B
Williams, DC
Williams, SH
Willocq, S
Wilson, RJ
Wisniewski, WJ
Wittlin, JL
Woods, M
Word, GB
Wright, TR
Wyss, J
Yamamoto, RK
Yamartino, JM
Yang, X
Yashima, J
Yellin, SJ
Young, CC
Yuta, H
Zapalac, G
Zdarko, RW
Zhou, J
AF Abe, K
Abe, K
Abe, T
Adam, I
Akagi, T
Allen, NJ
Arodzero, A
Ash, WW
Aston, D
Baird, KG
Baltay, C
Band, HR
Barakat, MB
Bardon, O
Barklow, TL
Bauer, JM
Bellodi, G
Ben-David, R
Benvenuti, AC
Bilei, GM
Bisello, D
Blaylock, G
Bogart, JR
Bolen, B
Bower, GR
Brau, JE
Breidenbach, M
Bugg, WM
Burke, D
Burnett, TH
Burrows, PN
Calcaterra, A
Caldwell, DO
Calloway, D
Camanzi, B
Carpinelli, M
Cassell, R
Castaldi, R
Castro, A
Cavalli-Sforza, M
Chou, A
Church, E
Cohn, HO
Coller, JA
Convery, MR
Cook, V
Cotton, R
Cowan, RF
Coyne, DG
Crawford, G
Damerell, CJS
Danielson, MN
Daoudi, M
de Groot, N
Dell'Orso, R
Dervan, PJ
de Sangro, R
Dima, M
D'Oliveira, A
Dong, DN
Du, PYC
Dubois, R
Eisenstein, BI
Eschenburg, V
Etzion, E
Fahey, S
Falciai, D
Fan, C
Fernandez, JP
Fero, MJ
Flood, K
Frey, R
Gillman, T
Gladding, G
Gonzalez, S
Hart, EL
Harton, JL
Hasan, A
Hasuko, K
Hedges, SJ
Hertzbach, SS
Hildreth, MD
Huber, J
Huffer, ME
Hughes, EW
Huynh, X
Hwang, H
Iwasaki, M
Jackson, DJ
Jacques, P
Jaros, JA
Jiang, ZY
Johnson, AS
Johnson, JR
Johnson, RA
Junk, T
Kajikawa, R
Kalelkar, M
Kamyshkov, Y
Kang, HJ
Karliner, I
Kawahara, H
Kim, YD
King, R
King, ME
Kofler, RR
Krishna, NM
Kroeger, RS
Langston, M
Lath, A
Leith, DWG
Lia, V
Lin, CJS
Liu, X
Liu, MX
Loreti, M
Lu, A
Lynch, HL
Ma, J
Mancinelli, G
Manly, S
Mantovani, G
Markiewicz, TW
Maruyama, T
Masuda, H
Mazzucato, E
McKemey, AK
Meadows, BT
Menegatti, G
Messner, R
Mockett, PM
Moffeit, KC
Moore, TB
Morii, M
Muller, D
Murzin, V
Nagamine, T
Narita, S
Nauenberg, U
Neal, H
Nussbaum, M
Oishi, N
Onoprienko, D
Osborne, LS
Panvini, RS
Park, H
Park, CH
Pavel, TJ
Peruzzi, I
Piccolo, M
PIemontese, L
Pieroni, E
Pitts, KT
Plano, RJ
Prepost, R
Prescott, CY
Punkar, GD
Quigley, J
Ratcliff, BN
Reeves, TW
Reidy, J
Reinertsen, PL
Rensing, PE
Rochester, LS
Rowson, PC
Russell, JJ
Saxton, OH
Schalk, T
Schindler, RH
Schumm, BA
Schwiening, J
Sen, S
Serbo, VV
Shaevitz, MH
Shank, JT
Shapiro, G
Sherden, DJ
Shmakov, KD
Simopoulos, C
Sinev, NB
Smith, SR
Smy, MB
Snyder, JA
Staengle, H
Stahl, A
Stamer, P
Steiner, H
Steiner, R
Strauss, MG
Su, D
Suekane, F
Sugiyama, A
Suzuki, S
Swartz, M
Szumilo, A
Takahashi, T
Taylor, FE
Thom, J
Torrence, E
Toumbas, NK
Trandafir, AI
Turk, JD
Usher, T
Vannini, C
Va'vra, J
Vella, E
Venuti, JP
Verdier, R
Verdini, PG
Wagner, SR
Wagner, DL
Waite, AP
Walston, S
Wang, J
Ward, C
Watts, SJ
Weidemann, AW
Weiss, ER
Whitaker, JS
White, SL
Wickens, FJ
Williams, B
Williams, DC
Williams, SH
Willocq, S
Wilson, RJ
Wisniewski, WJ
Wittlin, JL
Woods, M
Word, GB
Wright, TR
Wyss, J
Yamamoto, RK
Yamartino, JM
Yang, X
Yashima, J
Yellin, SJ
Young, CC
Yuta, H
Zapalac, G
Zdarko, RW
Zhou, J
TI Direct measurement of parity violation in the coupling of Z(0) bosons to
b quarks using a mass tag and momentum-weighted track charge
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ANNIHILATION; COLLISIONS; ASYMMETRY
AB We present a direct measurement of the parity-violation parameter A(b) using a self-calibrating track-charge technique. In the SLAG Linear Collider Large Detector (SLD) experiment we observe hadronic decays of Z(0) bosons produced in collisions between longitudinally polarized electrons and unpolarized positrons at the SLAG Linear Collider. A sample of b (b) over bar events is selected using the topologically reconstructed mass of B hadrons. From our 1993-1995 sample of approximately 150 000 hadronic Z(0) decays, we obtain A(b) = 0.911 +/- 0.045(stat) +/- 0.045(syst).
C1 Aomori Univ, Aomori 030, Japan.
Adelphi Univ, Garden City, NY 11530 USA.
Ist Nazl Fis Nucl, I-40126 Bologna, Italy.
Brunel Univ, Uxbridge UB8 3PH, Middx, England.
Boston Univ, Boston, MA 02215 USA.
Univ Cincinnati, Cincinnati, OH 45221 USA.
Univ Colorado, Boulder, CO 80309 USA.
Columbia Univ, Nevis Labs, Irvington, NY 10533 USA.
Colorado State Univ, Ft Collins, CO 80523 USA.
INFN, I-44100 Ferrara, Italy.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Illinois, Urbana, IL 61801 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Phys 50B5211, Berkeley, CA 94720 USA.
Louisiana Tech Univ, Dept Phys, Ruston, LA 71272 USA.
Univ Massachusetts, Amherst, MA 01003 USA.
Univ Mississippi, University, MS 38677 USA.
MIT, Cambridge, MA 02139 USA.
Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia.
Nagoya Univ, Nagoya, Aichi 464, Japan.
Univ Oregon, Dept Phys, Eugene, OR 97403 USA.
Univ Oxford, Oxford OX1 3RH, England.
Univ Padua, I-35100 Padua, Italy.
Univ Perugia, INFN, I-06100 Perugia, Italy.
Ist Nazl Fis Nucl, I-56010 Pisa, Italy.
Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
Rutgers State Univ, Serin Phys Lab, Piscataway, NJ 08855 USA.
Stanford Linear Accelerator Ctr, Menlo Park, CA 94025 USA.
Sogang Univ, Seoul, South Korea.
Soongsil Univ, Seoul 156743, South Korea.
Univ Tennessee, Knoxville, TN 37996 USA.
Tohoku Univ, Bubble Chamber Lab, Sendai, Miyagi 980, Japan.
Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA.
Vanderbilt Univ, Stevenson Ctr, Nashville, TN 37235 USA.
Univ Washington, Seattle, WA 98105 USA.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06520 USA.
RP Abe, K (reprint author), Aomori Univ, 2-3-1 Kohata, Aomori 030, Japan.
RI de Groot, Nicolo/A-2675-2009; Stahl, Achim/E-8846-2011; de Sangro,
Riccardo/J-2901-2012; Cavalli-Sforza, Matteo/H-7102-2015; Kamyshkov,
Yuri/J-7999-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016;
OI Stahl, Achim/0000-0002-8369-7506; de Sangro,
Riccardo/0000-0002-3808-5455; Kamyshkov, Yuri/0000-0002-3789-7152;
Calcaterra, Alessandro/0000-0003-2670-4826; Frey,
Raymond/0000-0003-0341-2636; pieroni, enrico/0000-0002-4246-6963; Wyss,
Jeffery/0000-0002-8277-4012
NR 18
TC 11
Z9 11
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 3
PY 1998
VL 81
IS 5
BP 942
EP 946
DI 10.1103/PhysRevLett.81.942
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 106LH
UT WOS:000075130400003
ER
PT J
AU Ramayya, AV
Hwang, JK
Hamilton, JH
Sandulescu, A
Florescu, A
Ter-Akopian, GM
Daniel, AV
Oganessian, YT
Popeko, GS
Greiner, W
Cole, JD
AF Ramayya, AV
Hwang, JK
Hamilton, JH
Sandulescu, A
Florescu, A
Ter-Akopian, GM
Daniel, AV
Oganessian, YT
Popeko, GS
Greiner, W
Cole, JD
CA GANDS95 Collaboration
TI Observation of Be-10 emission in the cold ternary spontaneous fission of
Cf-252
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID RADIOACTIVITY
AB The emission of Be-10 in ternary cold neutronless spontaneous fission of Cf-252 is observed with the Gammasphere consisting of 72 detectors. The gamma ray corresponding to the decay of the first 2(+) state in Be-10 is observed in coincidence with the gamma rays of the fission partners of Sr-96 and Ba-146. The yield to the first excited state of Be-10 in the Sr-96-Ba-146 split is the order of 4.0 x 10(-4) per 100 fission events.
C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
Inst Atom Phys, R-76900 Bucharest, Romania.
Johann Wolfgang Goethe Univ, Inst Theoret Phys, D-60054 Frankfurt, Germany.
Joint Inst Nucl Res, Dubna 141980, Russia.
Joint Inst Heavy Ion Res, Oak Ridge, TN 37830 USA.
Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA.
RP Ramayya, AV (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
NR 12
TC 83
Z9 85
U1 0
U2 3
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 3
PY 1998
VL 81
IS 5
BP 947
EP 950
DI 10.1103/PhysRevLett.81.947
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 106LH
UT WOS:000075130400004
ER
PT J
AU Davidson, RC
AF Davidson, RC
TI Nonlinear stability theorem for high-intensity charged particle beams
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB Global conservation constraints based on the nonlinear Vlasov-Maxwell equations are used to derive a three-dimensional kinetic stability theorem for an intense non-neutral ion beam (or charge bunch) propagating with average axial velocity upsilon(b) = const. It is shown that a sufficient condition for linear and nonlinear stability for perturbations with arbitrary polarization is that the equilibrium distribution be a monotonically decreasing function of the single-particle energy H' in the beam frame, i.e., partial derivative f(eq)(H')/partial derivative H' less than or equal to 0.
C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Davidson, RC (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
NR 12
TC 56
Z9 55
U1 0
U2 2
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 3
PY 1998
VL 81
IS 5
BP 991
EP 994
DI 10.1103/PhysRevLett.81.991
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 106LH
UT WOS:000075130400015
ER
PT J
AU Mach, P
Pindak, R
Levelut, AM
Barois, P
Nguyen, HT
Huang, CC
Furenlid, L
AF Mach, P
Pindak, R
Levelut, AM
Barois, P
Nguyen, HT
Huang, CC
Furenlid, L
TI Structural characterization of various chiral smectic-C phases by
resonant X-ray scattering
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ANTIFERROELECTRIC LIQUID-CRYSTALS; FORBIDDEN REFLECTIONS; TRANSITIONS;
SERIES; MODEL
AB We report the results of resonant x-ray diffraction at the sulfur K-edge performed upon free-standing films of a thiobenzoate liquid-crystal compound. Our data provide the first direct structural evidence of distinct periodicities in several chiral Sm-C phases, including 2-layer, 3-layer, and 4-layer superlattices in Sm-C-A*, Sm-C-FI1*, and Sm-C-FI2*, respectively. In Sm-C-alpha*, periodicity incommensurate with the layer spacing was detected. The racemic compound version was also studied. The results are consistent with a "clock model" of the Sm-C* variant structures.
C1 Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA.
Univ Paris 11, Phys Solides Lab, F-91405 Orsay, France.
Univ Bordeaux 1, Ctr Rech Paul Pascal, CNRS, F-33600 Pessac, France.
Brookhaven Natl Lab, NSLS, Upton, NY 11973 USA.
RP Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
NR 22
TC 293
Z9 293
U1 0
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 3
PY 1998
VL 81
IS 5
BP 1015
EP 1018
DI 10.1103/PhysRevLett.81.1015
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 106LH
UT WOS:000075130400021
ER
PT J
AU Brown, DW
Sokol, PE
Ehrlich, SN
AF Brown, DW
Sokol, PE
Ehrlich, SN
TI New disorder induced phase transitions of classical rare gases in porous
vycor glass
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SUPERFLUID TRANSITION; NEUTRON-SCATTERING
AB We report the results of x-ray diffraction studies of Ar and Kr confined in Vycor glass. The freezing and melting temperatures of both Ar and Kr were suppressed well below their bulk freezing points. On solidification, both samples crystallized in a disordered hexagonal close packed structure similar to that observed in molecular dynamics simulations of confined solids. A new solid-solid phase transition is observed at a reduced temperature of T/T-f approximate to 0.5 when confined to Vycor. Below this temperature the disordered hexagonal closed packed structure coexists with the fcc structure.
C1 Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA.
RP Brown, DW (reprint author), Univ Calif Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
NR 23
TC 38
Z9 38
U1 0
U2 4
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 3
PY 1998
VL 81
IS 5
BP 1019
EP 1022
DI 10.1103/PhysRevLett.81.1019
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 106LH
UT WOS:000075130400022
ER
PT J
AU Morr, DK
Pines, D
AF Morr, DK
Pines, D
TI The resonance peak in cuprate superconductors
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID INELASTIC-NEUTRON-SCATTERING; T-C SUPERCONDUCTORS; NORMAL-STATE;
YBA2CU3O7; SUSCEPTIBILITY
AB We pursue the consequences of a theory in which the resonance peak observed in inelastic neutron scattering experiments on underdoped and optimally doped YBa2Cu3O6+x compounds arises from a spin-wave excitation. We find that it is heavily damped in the normal state and only becomes visible in the superconducting state due to the drastic decrease in spin damping. We show that a spin-fermion model correctly describes the doping dependence of the peak position and of the integrated intensity. Finally, we make several predictions concerning resonance peaks in other cuprate superconductors.
C1 Univ Illinois, Loomis Lab Phys, Urbana, IL 61801 USA.
Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, LANSCE, Ctr Mat Sci, Los Alamos, NM 87545 USA.
RP Morr, DK (reprint author), Univ Illinois, Loomis Lab Phys, 1110 W Green St, Urbana, IL 61801 USA.
NR 30
TC 110
Z9 110
U1 1
U2 6
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD AUG 3
PY 1998
VL 81
IS 5
BP 1086
EP 1089
DI 10.1103/PhysRevLett.81.1086
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 106LH
UT WOS:000075130400039
ER
PT J
AU Nelson, WR
Haney, LN
Ostrom, LT
Richards, RE
AF Nelson, WR
Haney, LN
Ostrom, LT
Richards, RE
TI Structured methods for identifying and correcting potential human errors
in space operations
SO ACTA ASTRONAUTICA
LA English
DT Article
AB Human performance plays a significant role in the development and operation of any complex system, and human errors are significant contributors to degraded performance, incidents, and accidents for technologies as diverse as medical systems, commercial aircraft, offshore oil platforms, nuclear power plants, and space systems. To date, serious accidents attributed to human error have fortunately been rare in space operations. However, as flight rates go up and the duration of space missions increases, the accident rate could increase unless proactive action is taken to identify and correct potential human errors in space operations. The Idaho National Engineering and Environmental Laboratory (INEEL) has developed and applied structured methods of human error analysis to identify potential human errors, assess their effects on system performance, and develop strategies to prevent the errors or mitigate their consequences. These methods are being applied in NASA-sponsored programs to the domain of commercial aviation, focusing on airplane maintenance and air traffic management. The application of human error analysis to space operations could contribute to minimize the risks associated with human error in the design and operation of future space systems. (C) 1998 Elsevier Science Ltd. All rights reserved.
C1 Lockheed Martin Idaho Technol, Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA.
RP Nelson, WR (reprint author), Lockheed Martin Idaho Technol, Idaho Natl Engn & Environm Lab, POB 1625, Idaho Falls, ID 83415 USA.
FU NIDCR NIH HHS [DE-AC07-94ID13223]
NR 6
TC 5
Z9 5
U1 0
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0094-5765
J9 ACTA ASTRONAUT
JI Acta Astronaut.
PD AUG-SEP
PY 1998
VL 43
IS 3-6
BP 211
EP 222
DI 10.1016/S0094-5765(98)00155-6
PG 12
WC Engineering, Aerospace
SC Engineering
GA 121CE
UT WOS:000075993900012
PM 11541925
ER
PT J
AU Reidys, CM
AF Reidys, CM
TI Acyclic orientations of random graphs
SO ADVANCES IN APPLIED MATHEMATICS
LA English
DT Article
DE random graph; acyclic orientation
ID NUMBER
AB An acyclic orientation of an undirected graph is an orientation of its edges such that the resulting directed graph contains no cycles. The random graph G(n,p) is a probability space consisting of subgraphs of K-n that are obtained by selecting each K-n-edge with independent probability p. The random graph Q(2,p)(n) is defined analogously and consists of subgraphs of the n-cube, Q(2)(n). In this paper we first derive a bijection between certain equivalence classes of permutations and acyclic orientations. Second, we present a lower and an upper bound on the r.v. a(G(n,p)) that counts the number of acyclic orientations of G(n,p). Finally we study the distribution of a(G(n,p)) and a(Q(2,p)(n)) and show that log(2)a(G(n,p)) and log(2)a(Q(2,p)(n)) are sharply concentrated at their respective expectation values. (C) 1998 Academic Press.
C1 Univ Calif Los Alamos Natl Lab, TSA, DO SA, Los Alamos, NM 87545 USA.
RP Reidys, CM (reprint author), Univ Calif Los Alamos Natl Lab, TSA, DO SA, POB 1663, Los Alamos, NM 87545 USA.
EM duck@tsasa.lanl.gov
NR 13
TC 20
Z9 20
U1 1
U2 1
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0196-8858
J9 ADV APPL MATH
JI Adv. Appl. Math.
PD AUG
PY 1998
VL 21
IS 2
BP 181
EP 192
DI 10.1006/aama.1998.0595
PG 12
WC Mathematics, Applied
SC Mathematics
GA 103EB
UT WOS:000075144000001
ER
PT J
AU Lee, CL
AF Lee, CL
TI Limit cycle measurements from a cantilever beam attached to a rotating
body
SO AIAA JOURNAL
LA English
DT Article
ID DYNAMICS; SYSTEMS
C1 Univ Calif Lawrence Livermore Natl Lab, New Technol Engn Div, Struct Mech Grp, Livermore, CA 94551 USA.
RP Lee, CL (reprint author), Univ Calif Lawrence Livermore Natl Lab, New Technol Engn Div, Struct Mech Grp, Box 808, Livermore, CA 94551 USA.
NR 5
TC 2
Z9 2
U1 0
U2 0
PU AMER INST AERONAUT ASTRONAUT
PI RESTON
PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 USA
SN 0001-1452
J9 AIAA J
JI AIAA J.
PD AUG
PY 1998
VL 36
IS 8
BP 1540
EP 1541
PG 2
WC Engineering, Aerospace
SC Engineering
GA 105HJ
UT WOS:000075066400028
ER
PT J
AU Khanna, S
Motwani, R
Wilson, RH
AF Khanna, S
Motwani, R
Wilson, RH
TI On certificates and lookahead in dynamic graph problems
SO ALGORITHMICA
LA English
DT Article
DE dynamic algorithms; graph algorithms; lookahead algorithms; graph
certificates; sparsification; strong connectivity; transitive closure
ID ONLINE
AB Recent work in dynamic graph algorithms has led to efficient algorithms for dynamic undirected graph problems such as connectivity. However, no efficient deterministic algorithms are known for the dynamic versions of fundamental directed graph problems like strong connectivity and transitive closure, as well as some undirected graph problems such as maximum matchings and cuts. We provide some explanation for this lack of success by presenting quadratic lower bounds on the certificate complexity of the seemingly difficult problems, in contrast to the known linear certificate complexity for the problems which have efficient dynamic algorithms.
In many applications of dynamic (di)graph problems, a certain form of lookahead is available. Specifically, we consider the problems of assembly planning in robotics and the maintenance of relations in databases. These give rise to dynamic strong connectivity and dynamic transitive closure problems, respectively. We explain why it is reasonable, and indeed natural and desirable, to assume that lookahead is available in these two applications. Exploiting lookahead to circumvent their inherent complexity, we obtain efficient dynamic algorithms for strong connectivity and transitive closure.
C1 AT&T Bell Labs, Dept Fundamental Math Res, Murray Hill, NJ 07974 USA.
Stanford Univ, Dept Comp Sci, Stanford, CA 94305 USA.
Sandia Natl Labs, Intelligent Syst & Robot Ctr, Albuquerque, NM 87185 USA.
RP Khanna, S (reprint author), AT&T Bell Labs, Dept Fundamental Math Res, 600 Mt Ave, Murray Hill, NJ 07974 USA.
NR 31
TC 7
Z9 7
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0178-4617
EI 1432-0541
J9 ALGORITHMICA
JI Algorithmica
PD AUG
PY 1998
VL 21
IS 4
BP 377
EP 394
DI 10.1007/PL00009220
PG 18
WC Computer Science, Software Engineering; Mathematics, Applied
SC Computer Science; Mathematics
GA ZP280
UT WOS:000073736500003
ER
PT J
AU Maj, J
Kustom, R
AF Maj, J
Kustom, R
TI Multipactor protection of APS/rf equipment
SO AMERICAN CERAMIC SOCIETY BULLETIN
LA English
DT Article
AB Titanium-vapor deposition appears to be a solution to the multipactoring problem of ceramic and copper surfaces of radio-frequency equipment.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
RP Maj, J (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 7
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 USA
SN 0002-7812
J9 AM CERAM SOC BULL
JI Am. Ceram. Soc. Bull.
PD AUG
PY 1998
VL 77
IS 8
BP 75
EP 77
PG 3
WC Materials Science, Ceramics
SC Materials Science
GA 111AB
UT WOS:000075414200003
ER
PT J
AU Allayee, H
Aouizerat, BE
Cantor, RM
Dallinga-Thie, GM
Krauss, RM
Lanning, CD
Rotter, JI
Lusis, AJ
de Bruin, TWA
AF Allayee, H
Aouizerat, BE
Cantor, RM
Dallinga-Thie, GM
Krauss, RM
Lanning, CD
Rotter, JI
Lusis, AJ
de Bruin, TWA
TI Families with familial combined hyperlipidemia and families enriched for
coronary artery disease share genetic determinants for the atherogenic
lipoprotein phenotype
SO AMERICAN JOURNAL OF HUMAN GENETICS
LA English
DT Article
ID COMPLEX SEGREGATION ANALYSIS; SERUM TRIGLYCERIDE LEVELS; SUBCLASS
PATTERNS; APOLIPOPROTEIN-B; COMBINED HYPERLIPEMIA; STABLE ISOTOPES;
HEART-DISEASE; PARTICLE-SIZE; DENSITY; SUSCEPTIBILITY
AB Small, dense LDL particles consistently have been associated with hypertriglyceridemia, premature coronary artery disease (CAD), and familial combined hyperlipidemia (FCH). previously, we have observed linkage of LDL particle size with four separate candidate-gene loci in a study of families enriched for CAD. These loci contain the genes for manganese superoxide dismutase (MnSOD), on chromosome 6q; for apolipoprotein AI-CIII-AIV, on chromosome 11q; for cholesteryl ester transfer protein (CETP) and lecithin:cholesterol acyltransferase (LCAT), on chromosome 16q; and for the LDL receptor (LDLR), on chromosome 19p. We have now tested whether these loci also contribute to LDL particle size in families ascertained for FCH. The members of 18 families (481 individuals) were typed for genetic markers at the four loci, and linkage to LDL particle size was assessed by nonparametric sib-pair linkage analysis. The presence of small, dense LDL (pattern B) was much more frequent in the FCH probands (39%) than in the spouse controls (4%). Evidence for linkage was observed at the MnSOD (P = .02), CETP/LCAT (P = .03), and apolipoprotein AI-CIII-AIV loci (P = .005) but not at the LDLR locus. We conclude that there is a genetically based association between FCH and small, dense LDL and that the genetic determinants for LDL particle size are shared, at least in part, among FCH families and the more general population at risk for CAD.
C1 Univ Calif Los Angeles, Dept Microbiol & Mol Genet, Los Angeles, CA 90024 USA.
Univ Calif Los Angeles, Dept Med, Los Angeles, CA 90024 USA.
Univ Calif Los Angeles, Inst Mol Biol, Los Angeles, CA 90024 USA.
Cedars Sinai Res Inst, Dept Med, Div Med Genet, Los Angeles, CA USA.
Cedars Sinai Res Inst, Dept Pediat, Los Angeles, CA USA.
Univ Utrecht Hosp, Dept Med, Utrecht, Netherlands.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
Univ Hosp Maastricht, Dept Med, Maastricht, Netherlands.
Univ Hosp Maastricht, Dept Endocrinol, Maastricht, Netherlands.
RP Lusis, AJ (reprint author), Univ Calif Los Angeles, Sch Med, Ctr Hlth Sci, Dept Med,Div Cardiol 47 123, Los Angeles, CA 90095 USA.
FU NCRR NIH HHS [P41 RR03655]; NHLBI NIH HHS [HL-28481, HL 18574]
NR 36
TC 48
Z9 51
U1 0
U2 1
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA
SN 0002-9297
J9 AM J HUM GENET
JI Am. J. Hum. Genet.
PD AUG
PY 1998
VL 63
IS 2
BP 577
EP 585
DI 10.1086/301983
PG 9
WC Genetics & Heredity
SC Genetics & Heredity
GA 110CB
UT WOS:000075360800034
PM 9683614
ER
PT J
AU Thomasset, N
Lochter, A
Sympson, CJ
Lund, LR
Williams, DR
Behrendtsen, O
Werb, Z
Bissell, MJ
AF Thomasset, N
Lochter, A
Sympson, CJ
Lund, LR
Williams, DR
Behrendtsen, O
Werb, Z
Bissell, MJ
TI Expression of autoactivated stromelysin-1 in mammary glands of
transgenic mice leads to a reactive stroma during early development
SO AMERICAN JOURNAL OF PATHOLOGY
LA English
DT Article
ID ENDOTHELIAL-CELL ADHESION; EXTRACELLULAR-MATRIX; EPITHELIAL-CELLS;
BREAST-CARCINOMA; GENE-EXPRESSION; TUMOR ANGIOGENESIS; TENASCIN
ISOFORMS; BASEMENT-MEMBRANE; MOUSE; DIFFERENTIATION
AB Extracellular matrix and extracellular matrix-degrading matrix metalloproteinases play a key role in interactions between the epithelium and the mesenchyme during mammary gland development and disease. in patients with breast cancer, the mammary mesenchyme undergoes a stromal reaction, the etiology of which is unknown. We previously showed that targeting of an autoactivating mutant of the matrix metalloproteinase stromelysin-1 to mammary epithelia of transgenic mice resulted in reduced mammary function during pregnancy and development of pre-neoplastic and neoplastic lesions. Here ne examine the cascade of alterations before breast tumor formation in the mammary gland stroma once the expression of the stromelysin-1 transgene commences. Beginning in postpubertal virgin animals, low levels of transgene expression in mammary epithelia led to increased expression of endogenous stromelysin-1 in stromal fibroblasts and up-regulation of other matrix metalloproteinases, without basement membrane disruption. These changes were accompanied by the progressive development of a compensatory reactive stroma, characterized by increased collagen content and vascularization in glands from virgin mice. This remodeling of the gland affected epithelial-mesenchymal communication as indicated by inappropriate expression of tenascin-C starting by day 6 of pregnancy. This, together with increased transgene expression, led to basement membrane disruption starting by day 15 of pregnancy. We propose that the highly reactive stroma provides a prelude to breast epithelial tumors observed in these animals.
C1 Ernest Orlando Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
Univ Calif San Francisco, Dept Anat, San Francisco, CA 94143 USA.
RP Bissell, MJ (reprint author), Ernest Orlando Lawrence Berkeley Natl Lab, Div Life Sci, 1 Cyclotron Rd,MS 83-101, Berkeley, CA 94720 USA.
FU NCI NIH HHS [CA 57621, CA 64786, R01 CA057621, R01 CA064786, R37
CA064786]
NR 51
TC 109
Z9 111
U1 0
U2 1
PU AMER SOC INVESTIGATIVE PATHOLOGY, INC
PI BALTIMORE
PA 428 EAST PRESTON ST, BALTIMORE, MD 21202-3993 USA
SN 0002-9440
J9 AM J PATHOL
JI Am. J. Pathol.
PD AUG
PY 1998
VL 153
IS 2
BP 457
EP 467
DI 10.1016/S0002-9440(10)65589-7
PG 11
WC Pathology
SC Pathology
GA 108LY
UT WOS:000075268900015
PM 9708806
ER
PT J
AU Marshall, RC
Powers-Risius, P
Huesman, RH
Reutter, BW
Taylor, SE
Maurer, HE
Huesman, MK
Budinger, TF
AF Marshall, RC
Powers-Risius, P
Huesman, RH
Reutter, BW
Taylor, SE
Maurer, HE
Huesman, MK
Budinger, TF
TI Estimating glucose metabolism using glucose analogs and two tracer
kinetic models in isolated rabbit heart
SO AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY
LA English
DT Article
DE fluorodeoxyglucose; deoxyglucose; positron emission tomography
ID POSITRON EMISSION TOMOGRAPHY; BRAIN TRANSFER CONSTANTS; WORKING
RAT-HEART; TIME UPTAKE DATA; LUMPED CONSTANT; GRAPHICAL EVALUATION;
CORONARY FLOW; FLUORODEOXYGLUCOSE; DEOXYGLUCOSE; INSULIN
AB The purpose of this investigation was to I) evaluate the relative accuracy of the Sokoloff and Patlak tracer kinetic models in estimating glucose metabolic rate (GMR) in the presence and absence of insulin; 2) evaluate the effect of nutritional state on the lumped constant (LC); and 3) compare the kinetics of 2-fluoro-2-deoxy-D-[C-14]glucose (FDG) and 2-deoxy-D-[H-3]glucose (DG) membrane transport and phosphorylation. The experimental preparation was the isolated, red blood cell-albumin-perfused rabbit heart. Our results showed that both tracer kinetic models provided GMR estimates that correlated well with the Fick method (for FDG, R = 0.84 and 0.91 for the Sokoloff and Patlak models, respectively); nutritional state did not affect the LC; and FDG and DG have different transport and/or phosphorylation parameters. We also observed that 1) the addition of a fourth compartment to the Sokoloff model reduced the mean squared error between measured and modeled data by a factor of 7.4; 2) a longer time (21.8 min) was required to obtain a linear phase of the Patlak plot than is allowed in clinical studies; and 3) accurate GMR estimates were obtained only by using different LCs reflecting insulin's presence or absence. Our results indicate potential sources of error in the use of FDG and positron emission tomography to quantify GMR in patients.
C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Funct Imaging, Berkeley, CA 94720 USA.
No Calif Hlth Care Syst, Martinez Vet Affairs, Martinez, CA 94553 USA.
Univ Calif Davis, Sch Med, Davis, CA 95616 USA.
RP Marshall, RC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Funct Imaging, Bldg 55-121,1 Cyclotron Rd, Berkeley, CA 94720 USA.
FU NHLBI NIH HHS [P01 HL-25840, R01 HL-48068]
NR 44
TC 9
Z9 9
U1 1
U2 1
PU AMER PHYSIOLOGICAL SOC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA
SN 0363-6135
J9 AM J PHYSIOL-HEART C
JI Am. J. Physiol.-Heart Circul. Physiol.
PD AUG
PY 1998
VL 275
IS 2
BP H668
EP H679
PG 12
WC Cardiac & Cardiovascular Systems; Physiology; Peripheral Vascular
Disease
SC Cardiovascular System & Cardiology; Physiology
GA 107EN
UT WOS:000075194200040
PM 9683457
ER
PT J
AU Weinberg, AM
AF Weinberg, AM
TI In memoriam: Howard I. Adler
SO ANAEROBE
LA English
DT Biographical-Item
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Weinberg, AM (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU ACADEMIC PRESS LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 1075-9964
J9 ANAEROBE
JI Anaerobe
PD AUG
PY 1998
VL 4
IS 4
BP U9
EP U9
PG 1
WC Microbiology
SC Microbiology
GA 140YG
UT WOS:000077097800001
ER
PT J
AU Fung, EN
Yeung, ES
AF Fung, EN
Yeung, ES
TI Direct analysis of single rat peritoneal mast cells with laser
vaporization ionization mass spectrometry
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID CAPILLARY ELECTROPHORESIS; HISTAMINE
AB A linear time-of-flight mass spectrometer was used as a detector for now cytometry. These two techniques were coupled by a laser vaporization/ionization interface. The estimated mass detection limit of the combined system was 20 amol of serotonin standard with one laser pulse. An aqueous buffer at physiological pH was used to ensure compatibility with cells. Rat peritoneal mast cells (RPMCs) were dispensed into the mass spectrometer in a single file confined within a 20-mu m-i.d. capillary. By using the mass spectrometer as a detector, no precolumn staining or derivatization is required. Determination of serotonin and histamine in individual cells was demonstrated. With this method, hundreds of cells can be analyzed within a few minutes. The average amounts of histamine and serotonin per RPMC were found to be 0.75 +/- 0.33 and 0.11 +/- 0.06 fmol, respectively. No correlation was found between the amounts of the two amines in each cell.
C1 Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Yeung, ES (reprint author), Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA.
NR 26
TC 22
Z9 22
U1 1
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD AUG 1
PY 1998
VL 70
IS 15
BP 3206
EP 3212
DI 10.1021/ac980290q
PG 7
WC Chemistry, Analytical
SC Chemistry
GA 107VQ
UT WOS:000075232000026
PM 11013722
ER
PT J
AU Yang, LY
Lee, CS
Hofstadler, SA
Pasa-Tolic, L
Smith, RD
AF Yang, LY
Lee, CS
Hofstadler, SA
Pasa-Tolic, L
Smith, RD
TI Capillary isoelectric focusing-electrospray ionization Fourier transform
ion cyclotron resonance mass spectrometry for protein characterization
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID LARGE MOLECULES; ELECTROPHORESIS; BIOMOLECULES; DISSOCIATION;
IRRADIATION; SPECTRA
AB On-line combination of capillary isoelectric focusing (CIEF) with electrospray ionization Fourier transform ion cyclotron resonance (ESI-FTICR) mass spectrometry is demonstrated for high-resolution analysis of model proteins, human hemoglobin variants, and Escherichia coli proteins. The acquisition of high-resolution mass spectra of hemoglobin beta chains allows direct identification of hemoglobin variants A and C, differing in molecular mass by 1 Da. Direct mass determination of cellular proteins separated in the CIEF capillary is achieved using their isotopic envelopes obtained from ESI-FTICR. The factors which dictate overall performance of CIEF-ESI-FTICR, including duty cycle, mass resolution, scan rate, and sensitivity, are discussed in the context of protein variants and cell lysates analyzed in this study.
C1 Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA.
Iowa State Univ Sci & Technol, Ames Lab, US DOE, Ames, IA 50011 USA.
Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Lee, CS (reprint author), Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
EM CL143@umail.umd.edu.R.D.S; rd_smith@pnl.gov
RI Smith, Richard/J-3664-2012
OI Smith, Richard/0000-0002-2381-2349
NR 34
TC 75
Z9 78
U1 0
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD AUG 1
PY 1998
VL 70
IS 15
BP 3235
EP 3241
DI 10.1021/ac980224o
PG 7
WC Chemistry, Analytical
SC Chemistry
GA 107VQ
UT WOS:000075232000030
PM 11013724
ER
PT J
AU Bailey, CG
Yan, C
AF Bailey, CG
Yan, C
TI Separation of explosives using capillary electrochromatography
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID PERFORMANCE LIQUID-CHROMATOGRAPHY; PHOTODIODE-ARRAY DETECTION; WATER
AB The identification of explosives and their degradation products is important in forensic and environmental applications. Complete separation of these structurally similar compounds using reversed-phase liquid chromatography has proven to be a challenge. Here we present a demonstration of the use of capillary electrochromatography on the separation of a series of 14 nitroaromatic and nitramine explosive compounds. A separation with baseline resolution is achieved for all of the compounds in under 7 min, featuring efficiencies of over 500 000 theoretical plates/m. Using more aggressive running conditions, 13 of the 14 compounds are separated in under 2 min.
C1 Sandia Natl Labs, Livermore, CA 94551 USA.
Unimicro Technol Inc, Pleasanton, CA 94566 USA.
RP Bailey, CG (reprint author), Sandia Natl Labs, POB 969,Mail Stop 9671, Livermore, CA 94551 USA.
NR 36
TC 64
Z9 67
U1 1
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD AUG 1
PY 1998
VL 70
IS 15
BP 3275
EP 3279
DI 10.1021/ac980042u
PG 5
WC Chemistry, Analytical
SC Chemistry
GA 107VQ
UT WOS:000075232000036
PM 21644663
ER
PT J
AU Kutter, JP
Jacobson, SC
Matsubara, N
Ramsey, JM
AF Kutter, JP
Jacobson, SC
Matsubara, N
Ramsey, JM
TI Solvent-programmed microchip open-channel electrochromatography
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID ELECTROKINETIC CAPILLARY CHROMATOGRAPHY; TUBULAR LIQUID-CHROMATOGRAPHY;
PLANAR CHIPS TECHNOLOGY; ELECTROPHORESIS DEVICE; POSTCOLUMN REACTOR;
GRADIENT ELUTION; STATIONARY-PHASE; SAMPLE INJECTION; NITROGEN-DIOXIDE;
DETECT AMMONIA
AB Open-channel electrochromatography in combination with solvent programming is demonstrated using a microchip device. Channel walls were coated with octadecylsilanes at ambient temperatures, yielding stationary phases for chromatographic separations of neutral dyes. The electroosmotic now after coating was sufficient to ensure transport of all species and on-chip mixing of isocratic and gradient elution conditions with acetonitrile-buffer mixtures. Chips having different channel depths between 10.2 and 2.9 mu m were evaluated for performance, and van Deemter plots were established. Channel depths of about 5 mu m were found to be a good compromise between efficiency and ease of operation. Isocratic and gradient elution conditions were easily established and manipulated by computer-controlled application of voltages to the terminals of the microchip. Linear gradients with different slopes, start times, duration times, and start percentages of organic modifier proved to be powerful tools to tune selectivity and analysis time for the separation of a test mixture. Even very steep gradients still produced excellent efficiencies. Together with fast reconditioning times, complete runs could be finished in under 60 s.
C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA.
RP Ramsey, JM (reprint author), Oak Ridge Natl Lab, Div Chem & Analyt Sci, POB 2008, Oak Ridge, TN 37831 USA.
RI Kutter, Jorg/E-3256-2010
OI Kutter, Jorg/0000-0003-1065-1985
NR 48
TC 137
Z9 141
U1 2
U2 19
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD AUG 1
PY 1998
VL 70
IS 15
BP 3291
EP 3297
DI 10.1021/ac971367y
PG 7
WC Chemistry, Analytical
SC Chemistry
GA 107VQ
UT WOS:000075232000039
PM 21644666
ER
PT J
AU Stockwell, CA
Mulvey, M
Jones, AG
AF Stockwell, Craig A.
Mulvey, Margaret
Jones, Adam G.
TI Genetic evidence for two evolutionarily significant units of White Sands
pupfish
SO ANIMAL CONSERVATION
LA English
DT Article
ID MITOCHONDRIAL-DNA SEQUENCES; CONSERVATION GENETICS; CICHLID FISHES;
DESERT FISH; POPULATION; CYPRINODON; SYSTEMATICS; MANAGEMENT;
PERSPECTIVE; REGION
AB White Sands pupfish (Cyprinodon tularosa) are endemic to southern New Mexico and occur in only four localities: Malpais Spring, Salt Creek, Mound Spring and Lost River. Recently reported historical accounts indicate that the latter two populations were derived from translocations. Their limited distribution and complicated history suggest that knowledge of population genetic structure would be useful for the development of a sound conservation strategy. Mitochondrial DNA (mtDNA) sequences for a segment of the control region showed little variation. Variation was observed for microsatellite and allozyme loci with 37% attributable to divergence among populations. The mean genetic distance between Malpais Spring and the other three populations was high (allozymes: D(arc) = 0.541; microsatellites: R(st) = 0.684) compared with the mean distance among the other three populations (D(arc) = 0.161, Rst = -0.016). There were fixed or nearly fixed differences in allele frequency between the Malpais Spring population and the other three populations at one allozyme locus (hexokinase) and two microsatellite loci (WSP-02 and WSP-11). We suggest the recognition of two evolutionarily significant units (ESUs) for the White Sands pupfish: Malpais Spring and Salt Creek. Our data indicate that the Lost River and Mound Spring populations descended from translocations from the Salt Creek population. Therefore, conservation efforts should focus on the Malpais Spring population.
C1 [Stockwell, Craig A.; Mulvey, Margaret] Savannah River Ecol Lab, Aiken, SC 29802 USA.
[Jones, Adam G.] Univ Georgia, Dept Genet, Athens, GA 30602 USA.
RP Stockwell, CA (reprint author), N Dakota State Univ, Dept Zool, Fargo, ND 58105 USA.
EM cstockwe@plains.nodak.edu
FU DOD Legacy; US Department of Energy to the University of Georgia
Research Foundation [DE-FC0996SR18546]
FX We thank H. Reiser for her assistance in the field and for logistical
support. P. Morrow and R. Myers provided access to White Sands Missile
Range. J. Pittenger collected fish from Mound Spring. We benefited from
discussions with A. A. Echelle regarding allozyme techniques. We
appreciate laboratory assistance from K. Hicks. Special thanks to H.-P.
Liu for assistance with analysis of the control region. J. C. Avise, A.
A. Echelle, A. F. Echelle, J. S. Pittenger and H. Reiser commented on an
earlier version of this manuscript. This research was supported by DOD
Legacy grant to C. A. S. and M. M., and by financial award number
DE-FC0996SR18546 from the US Department of Energy to the University of
Georgia Research Foundation.
NR 64
TC 27
Z9 27
U1 0
U2 5
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1367-9430
J9 ANIM CONSERV
JI Anim. Conserv.
PD AUG
PY 1998
VL 1
IS 3
BP 213
EP 225
DI 10.1111/j.1469-1795.1998.tb00031.x
PG 13
WC Biodiversity Conservation; Ecology
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA V71EE
UT WOS:000204810400009
ER
PT J
AU Siders, CW
Siders, JLW
Taylor, AJ
Park, SG
Weiner, AM
AF Siders, CW
Siders, JLW
Taylor, AJ
Park, SG
Weiner, AM
TI Efficient high-energy pulse-train generation using a 2(n)-pulse
Michelson interferometer
SO APPLIED OPTICS
LA English
DT Article
ID TERAHERTZ RADIATION
AB We demonstrate a novel, Michelson-based, ultrafast multiplexer with a throughput approaching 100% for a polarization-multiplexed train and 50% for a Linearly polarized train, which is compatible with a high-energy pulse train and shaped-pulse generation. The interpulse spacings in the resultant 2(n)-pulse train can be adjusted continuously from multinanoseconds through zero. Using this interferometer, we also demonstrate generation of a 16-pulse train of terahertz pulses. (C) 1998 Optical Society of America.
C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA.
RP Siders, CW (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, MS D429, Los Alamos, NM 87545 USA.
OI Park, Sang-Gyu/0000-0002-6051-0163
NR 14
TC 57
Z9 57
U1 0
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0003-6935
J9 APPL OPTICS
JI Appl. Optics
PD AUG 1
PY 1998
VL 37
IS 22
BP 5302
EP 5305
DI 10.1364/AO.37.005302
PG 4
WC Optics
SC Optics
GA 106AJ
UT WOS:000075107300037
PM 18286010
ER
PT J
AU le Grand, JB
Mears, CA
Hiller, LJ
Frank, M
Labov, SE
Netel, H
Chow, D
Friedrich, S
Lindeman, MA
Barfknecht, AT
AF le Grand, JB
Mears, CA
Hiller, LJ
Frank, M
Labov, SE
Netel, H
Chow, D
Friedrich, S
Lindeman, MA
Barfknecht, AT
TI A superconducting tunnel junction x-ray detector with performance
limited by statistical effects
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID RESOLUTION
AB We have characterized a thin-film Nb/Al/AlOx/Al/Nb superconducting tunnel junction (STJ) optimized for low electronic noise as an x-ray detector in the 0.2-1 keV photon energy range. The spectra measured with this junction have high spectral purity with, to the best of our knowledge, the best energy resolution ever achieved with this type of detector in this energy band. The discrepancy between the theoretical and experimental energy resolution is only about 15%. Part of this small discrepancy may be explained by the fact that our junction has electrodes made from niobium/aluminum bilayers, while the theoretical result is for electrodes made from only one material. To the best of our knowledge, this is the first time that resolution achieved with a STJ x-ray detector is in agreement with the resolution predicted from statistical fluctuations in the creation and tunneling of quasiparticles. (C) 1998 American Institute of Physics. [S0003-6951(98)03435-4].
C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Conductus Inc, Sunnyvale, CA 94086 USA.
RP le Grand, JB (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-418, Livermore, CA 94550 USA.
RI Frank, Matthias/O-9055-2014
NR 11
TC 36
Z9 36
U1 0
U2 0
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD AUG
PY 1998
VL 73
IS 9
BP 1295
EP 1297
DI 10.1063/1.122372
PG 3
WC Physics, Applied
SC Physics
GA 249UL
UT WOS:000083351600044
ER
PT J
AU Tandon, L
Iyengar, GV
Parr, RM
AF Tandon, L
Iyengar, GV
Parr, RM
TI A review of radiologically important trace elements in human bones
SO APPLIED RADIATION AND ISOTOPES
LA English
DT Review
ID HUMAN-TISSUES; URANIUM; ASH
AB The authors recently compiled and reviewed the literature for minor and trace elements in human : bones and teeth as a part of an International Atomic Energy Agency (IAEA) study. Various aspects of elemental composition, analytical methodologies, quality assurance and quality control methods for hard tissue analysis were evaluated. Important data on selected radiologically important elements (Cs, Pu, Ra, Sr, Th and U) in calcified tissue from Various countries are discussed. The results of this compilation study suggest a need for new reference materials with matrix properties similar to bones including one with separated cortical and trabecular segments. (C) 1998 Elsevier Science Ltd. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Biomineral Sci Int Inc, Bethesda, MD 20817 USA.
Int Atom Energy Agcy, A-1400 Vienna, Austria.
RP Tandon, L (reprint author), Univ Calif Los Alamos Natl Lab, MS K-484, Los Alamos, NM 87545 USA.
NR 30
TC 30
Z9 31
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0969-8043
J9 APPL RADIAT ISOTOPES
JI Appl. Radiat. Isot.
PD AUG
PY 1998
VL 49
IS 8
BP 903
EP 910
DI 10.1016/S0969-8043(97)10102-6
PG 8
WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology,
Nuclear Medicine & Medical Imaging
SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA ZT855
UT WOS:000074134900002
PM 9650262
ER
PT J
AU Guilhaumou, N
Dumas, P
Carr, GL
Williams, GP
AF Guilhaumou, N
Dumas, P
Carr, GL
Williams, GP
TI Synchrotron infrared microspectrometry applied to petrography in
micrometer-scale range: Fluid chemical analysis and mapping
SO APPLIED SPECTROSCOPY
LA English
DT Article
DE synchrotron infrared microspectrometry; geology; inclusions
ID SPECTROSCOPY; INCLUSIONS; ABSORPTION; DIOPSIDE
AB The potentiality of synchrotron infrared microspectrometry was investigated for in situ analysis of fluid inclusions and volatiles of particular geological interest. Thanks to the intrinsic high brightness of the synchrotron infrared source, areas as small as a few mu m(2) can be probed, providing a high-contrast analysis of small inclusions in geological materials. We have identified organic components in such small volumes in their liquid and gaseous phase, thus allowing a deeper analysis of oil-water inclusions entrapped in diagenetic cements. Such detailed analysis opens up new perspectives in petroleum reservoir evolution studies. The high signal-to-noise ratio of spectra obtained in small volume allows a fast and accurate chemical mapping of the inclusion components, Drastic refraction effects preclude, at the present state, a quantitative analysis of either the volume or the thickness of the individual inclusions, Traces of volatiles such as CO2 and H2O are easily detected in the vitreous and gaseous part of the glass melt fluid inclusions. We have also profiled the hydroxyl concentration near a wail, and calculated the hydrogen diffusion coefficient in anhydrous minerals such as diopside.
C1 Univ Paris 06, Dept Geotecton, CNRS, URA 1759, F-75252 Paris 05, France.
Ctr Univ Paris Sud, LURE, F-91404 Orsay, France.
Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RP Guilhaumou, N (reprint author), Univ Paris 06, Dept Geotecton, CNRS, URA 1759, F-75252 Paris 05, France.
NR 27
TC 39
Z9 40
U1 0
U2 8
PU SOC APPLIED SPECTROSCOPY
PI FREDERICK
PA 201B BROADWAY ST, FREDERICK, MD 21701 USA
SN 0003-7028
J9 APPL SPECTROSC
JI Appl. Spectrosc.
PD AUG
PY 1998
VL 52
IS 8
BP 1029
EP 1034
DI 10.1366/0003702981944797
PG 6
WC Instruments & Instrumentation; Spectroscopy
SC Instruments & Instrumentation; Spectroscopy
GA 115TQ
UT WOS:000075681900001
ER
PT J
AU Rea, TE
Karapatakis, DJ
Guy, KK
Pinder, JE
Mackey, HE
AF Rea, TE
Karapatakis, DJ
Guy, KK
Pinder, JE
Mackey, HE
TI The relative effects of water depth, fetch and other physical factors on
the development of macrophytes in a small southeastern US pond
SO AQUATIC BOTANY
LA English
DT Article
DE macrophyte; depth; fetch; sediment slope; GIS
ID AQUATIC MACROPHYTES; EMERGENT VEGETATION; COOLING RESERVOIR; AXE LAKE;
PATTERNS; EXPOSURE; BIOMASS; DYNAMICS; ONTARIO
AB Aerial photography obtained during the growing seasons of 1979, 1982, 1985, 1988, and 1992 were used in a geographic information system to analyze the development of the floating-leaved macrophyte community in Pond B, an 87 ha, 12 m deep former cooling pond at the Savannah River Site that displays the water chemistry and fluctuating water levels typical for small southeastern reservoirs and ponds. The 1979 photograph was panchromatic. The later photography was natural color. Digitally-scanned photographs were: (1) classified using image processing software into the categories of macrophytes present or macrophytes absent (i.e. water); (2) compared across years to measure the rates and patterns of macrophyte development; and (3) compared to measures of water depth, sediment slope steepness, aspect, and fetch to relate patterns of macrophyte development to physical factors. The area occupied by floating-leaved macrophytes increased from 3.2 ha in 1979 to 19.9 ha in 1992, when macrophytes occupied 84.18 of the area 12 m deep and 56.3% of the area 3 m deep. The rates of macrophyte development were consistently slower in areas of greater water depth and greater fetch. The effects of slope and aspect were less than those for depth and fetch. Greater slopes initially enhanced but later slowed macrophyte development. Rates of development were greater for aspects facing the sun. The rate of macrophyte development was not correlated with proximity to existing vegetation. (C) 1998 Elsevier Science B.V. All rights reserved
C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
Westinghouse Savannah River Co, Integrat Support Grp, Aiken, SC 29808 USA.
RP Rea, TE (reprint author), Univ Georgia, Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA.
NR 40
TC 26
Z9 30
U1 2
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-3770
J9 AQUAT BOT
JI Aquat. Bot.
PD AUG
PY 1998
VL 61
IS 4
BP 289
EP 299
DI 10.1016/S0304-3770(98)00069-2
PG 11
WC Plant Sciences; Marine & Freshwater Biology
SC Plant Sciences; Marine & Freshwater Biology
GA 106YD
UT WOS:000075178300004
ER
PT J
AU Tatara, CP
Newman, MC
McCloskey, JT
Williams, PL
AF Tatara, CP
Newman, MC
McCloskey, JT
Williams, PL
TI Use of ion characteristics to predict relative toxicity of mono-, di-
and trivalent metal ions: Caenorhabditis elegans LC50
SO AQUATIC TOXICOLOGY
LA English
DT Article
DE Caenorhabditis elegans; metal; nematode; prediction; toxicity
ID MICROTOX(R) BIOLUMINESCENCE ASSAY; DAPHNIA-MAGNA; HEAVY-METALS; MERCURY;
MEMBRANES; NEMATODE; WATER; COMPONENTS; TRANSPORT; CHLORIDE
AB Predictive models for relative toxicity of divalent metal ions using ion characteristics have been produced with both Microtox(R), a 15 min microbial bioassay, and the 24 h Caenorhabditis elegans bioassay. Relative toxicity of mono-, di- and trivalent metal ions has also been successfully modeled using ion characteristics with the Microtox(R) bioassay. This study extends this approach to include longer exposure durations (24 h) and a more complex organism (metazoan). Twenty-four-hour LC50s (expressed as total and free ion concentrations) for the free-living soil nematode, C. elegans, were determined for Li: Na, Mg, K, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Cd, Cs, Ba, La, and Pb in an aqueous medium. Relative metal toxicity was predicted with least squares linear regression and several ion characteristics. Toxicity was most effectively predicted (r(2) = 0.85) with a two-variable model containing \log K-OH\ (where K-OH is the first hydrolysis constant) and chi(m)(2)r (the covalent index). The first hydrolysis constant reflects a metal ion's tendency to bind to intermediate ligands such as biochemical groups with O donor atoms, while X(m)(2)r reflects binding to soft ligands such as those with S donor atoms. The use of LC50s based on free ion concentrations did not significantly improve model fit. The results of this study are consistent with earlier models generated with Microtox(R) data, with the exception of barium, which was much more toxic to C. elegans than would be predicted from the model. We conclude that, with thoughtful application, ion characteristics can be used to predict the relative toxicity of metal ions that vary widely in both valence and binding tendency. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
Univ Georgia, Inst Ecol, Athens, GA 30602 USA.
Virginia Inst Marine Sci, Coll William & Mary, Gloucester Point, VA 23062 USA.
Univ Georgia, Environm Hlth Sci Program, Athens, GA 30602 USA.
RP Tatara, CP (reprint author), Univ Georgia, Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA.
NR 48
TC 70
Z9 74
U1 0
U2 24
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0166-445X
J9 AQUAT TOXICOL
JI Aquat. Toxicol.
PD AUG
PY 1998
VL 42
IS 4
BP 255
EP 269
DI 10.1016/S0166-445X(97)00104-5
PG 15
WC Marine & Freshwater Biology; Toxicology
SC Marine & Freshwater Biology; Toxicology
GA 112DL
UT WOS:000075478800002
ER
PT J
AU Palmer, JW
Hollander, MG
Rogers, PSZ
Benjamin, TM
Duffy, CJ
Lambert, JB
Brown, JA
AF Palmer, JW
Hollander, MG
Rogers, PSZ
Benjamin, TM
Duffy, CJ
Lambert, JB
Brown, JA
TI Pre-Columbian metallurgy: Technology, manufacture, and microprobe
analyses of copper bells from the Greater Southwest
SO ARCHAEOMETRY
LA English
DT Article
DE USA; Greater Southwest; Mexico; pre-Columbian; particle induced x-ray
emission microprobe analysis; bell; crotal; copper; composition;
workshops; trade
ID WEST MEXICAN METALLURGY; ANCIENT; BRONZE; ALLOYS
C1 Northwestern Univ, Dept Anthropol, Evanston, IL 60208 USA.
Los Alamos Natl Lab, CMS K 765, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Grp INC 7 Ms J514, Los Alamos, NM 87545 USA.
Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
RP Palmer, JW (reprint author), Univ S Florida, Dept Chem, Tampa, FL 33620 USA.
NR 52
TC 5
Z9 5
U1 0
U2 1
PU OXFORD UNIV
PI OXFORD
PA RES LAB ARCHAEOL HIST ART 6 KEBLE RD, OXFORD, ENGLAND OX1 3QJ
SN 0003-813X
J9 ARCHAEOMETRY
JI Archaeometry
PD AUG
PY 1998
VL 40
BP 361
EP 382
DI 10.1111/j.1475-4754.1998.tb00844.x
PN 2
PG 22
WC Archaeology; Chemistry, Analytical; Chemistry, Inorganic & Nuclear;
Geosciences, Multidisciplinary
SC Archaeology; Chemistry; Geology
GA 126HA
UT WOS:000076286800009
ER
PT J
AU Yaoi, T
Kagawa, HK
Trent, JD
AF Yaoi, T
Kagawa, HK
Trent, JD
TI Chaperonin filaments: Their formation and an evaluation of methods for
studying them
SO ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
LA English
DT Article
DE chaperonins; heat shock proteins; HSP60; native PAGE; electron
microscopy; cytoskeleton; archaea; Sulfolobus shibatae
ID HEAT-SHOCK PROTEINS; ARCHAEON SULFOLOBUS-SOLFATARICUS; ACQUIRED
THERMOTOLERANCE; ELECTRON-MICROSCOPY; GROEL-GROES; IN-VITRO;
THERMOPHILIC ARCHAEBACTERIUM; MOLECULAR CHAPERONES; RNA-POLYMERASE;
SP-NOV
AB Chaperonins are multisubunit protein complexes that can be isolated from cells as high-molecular-weight structures that appear as double rings in the electron microscope. We recently discovered that chaperonin double rings isolated from the hyperthermophilic archaeon Sulfolobus shibatae, when incubated at physiological temperatures in the presence of ATP and Mg2+, stacked into filaments; we hypothesized that these filaments are related to filaments seen inside S. shibatae cells and that chaperonins exist as filaments in vivo (J. D. Trent ct al, 1997, Proc. Natl. Acad. Sci. USA 94, 5383-5388). This paper elucidates the conditions under which we have observed S. shibatae chaperonins to form filaments and evaluates native polyacrylamide gel electrophoresis (PAGE), TEM, spectrophotometry, and centrifugation as methods for studying these filaments. We observed that in the presence of Mg2+ combined with ATP, ADP, ATP gamma S, or GTP, native PAGE indicated that chaperonin subunits assembled into double rings and that the conformation of these double rings wars effected by nucleotide binding, but we saw no indication of chaperonin filament formation. Under these same conditions, however, TEM, spectroscopy, and centrifugation methods indicated that chaperonin subunits and double rings had assembled into filaments. We determined that this discrepancy in the representation of the chaperonin structure was due to the native PAGE method itself. When we exposed chaperonin filaments to the electrophoretic held used in native PAGE, the filaments dissociated into double rings. This suggests that TEM, spectrophotometry, and centrifugation are the preferred methods for studying the higher-order structures of chaperonins, which are likely to be of biological significance. (C) 1998 Academic Press.
C1 Argonne Natl Lab, Ctr Mech Biol & Biotechnol, Argonne, IL 60439 USA.
RP Trent, JD (reprint author), Argonne Natl Lab, Ctr Mech Biol & Biotechnol, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM trent@anlcmb.bim.anl.gov
NR 49
TC 11
Z9 11
U1 1
U2 1
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0003-9861
J9 ARCH BIOCHEM BIOPHYS
JI Arch. Biochem. Biophys.
PD AUG 1
PY 1998
VL 356
IS 1
BP 55
EP 62
DI 10.1006/abbi.1998.0758
PG 8
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 110CG
UT WOS:000075361800008
PM 9681991
ER
PT J
AU Haarmann, TK
AF Haarmann, TK
TI Honey bees as indicators of radionuclide contamination: Comparative
studies of contaminant levels in forager and nurse bees and in the
flowers of three plant species
SO ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
LA English
DT Article
ID POLLUTION; MONITORS; POLLEN; METALS
AB Two separate field experiments were conducted as part of ongoing research concerning the use of honey bees (Apis mellifera) as indicators of environmental radionuclide contamination. The experiments were conducted in a study site containing radionuclide contamination above background levels. The first experiment compared levels of radionuclides found in forager bees to levels found in nurse bees. Bees were collected from colonies, analyzed for concentrations of radionuclides, and the results were compared using statistical methods. Results indicated that there is no significant difference between the contaminant levels in forager and nurse bees. A second experiment compared the levels of radionuclides found in the flowers of three plant species growing in the study site: salt cedar (Tamarix ramosissima), white sweet clover (Melilotus albus), and rabbit brush (Chrysothamnus nauseosus). Results indicated that there is no significant difference in the amounts of radionuclides found in the flowers of these three plants.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Haarmann, TK (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663,MS M887, Los Alamos, NM 87545 USA.
NR 38
TC 0
Z9 0
U1 2
U2 5
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0090-4341
J9 ARCH ENVIRON CON TOX
JI Arch. Environ. Contam. Toxicol.
PD AUG
PY 1998
VL 35
IS 2
BP 287
EP 294
PG 8
WC Environmental Sciences; Toxicology
SC Environmental Sciences & Ecology; Toxicology
GA ZZ058
UT WOS:000074691500013
ER
PT J
AU Hopkins, WA
Mendonca, MT
Rowe, CL
Congdon, JD
AF Hopkins, WA
Mendonca, MT
Rowe, CL
Congdon, JD
TI Elevated trace element concentrations in southern toads, Bufo
terrestris, exposed to coal combustion waste
SO ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
LA English
DT Article
ID IRRIGATION DRAINWATER; KESTERSON-RESERVOIR; AQUATIC BIRDS; AMPHIBIAN
POPULATIONS; SELENIUM ACCUMULATION; CALIFORNIA; REPRODUCTION; ASH;
BIOACCUMULATION; ORGANISMS
AB A number of recent studies have linked developmental, physiological, and behavioral abnormalities in amphibians to coal combustion wastes (coal ash). Few studies, however, have determined trace element concentrations in amphibians exposed to coal ash. In the current study we compare total body concentrations of 20 trace elements in adult southern toads, Bufo terrestris, inhabiting coal ash settling basins with toads that were not exposed to the combustion wastes (reference). In addition, we document the accumulation of trace elements in toads transplanted from reference sites to field enclosures in an ash settling basin for 7 and 12 weeks. Arsenic, selenium, and vanadium levels were significantly elevated in toads captured at the ash-contaminated site in comparison to toads from the reference site. All three of these elements were also significantly elevated in toads exposed to the contaminated habitat for only 7 weeks. Our study suggests that adult anurans can bioaccumulate particularly high levels of selenium and may be useful bioindicators in agricultural and coal ash-impacted habitats.
C1 Savannah River Ecol Lab, Aiken, SC 29802 USA.
Auburn Univ, Dept Zool & Wildlife Sci, Auburn, AL 36849 USA.
Univ Puerto Rico, Dept Biol Sci, Rio Piedras, PR 00931 USA.
RP Hopkins, WA (reprint author), Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA.
RI Rowe, Christopher/D-5271-2012
NR 47
TC 59
Z9 61
U1 3
U2 10
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0090-4341
J9 ARCH ENVIRON CON TOX
JI Arch. Environ. Contam. Toxicol.
PD AUG
PY 1998
VL 35
IS 2
BP 325
EP 329
PG 5
WC Environmental Sciences; Toxicology
SC Environmental Sciences & Ecology; Toxicology
GA ZZ058
UT WOS:000074691500018
PM 9680525
ER
PT J
AU Piatti, AE
Claria, JJ
Bica, E
Geisler, D
Minniti, D
AF Piatti, AE
Claria, JJ
Bica, E
Geisler, D
Minniti, D
TI A photometric and spectroscopic study of the southern open clusters
Pismis 18, Pismis 19, NGC 6005, and NGC 6253
SO ASTRONOMICAL JOURNAL
LA English
DT Article
DE galaxies : star clusters; open clusters and associations : individual
(Pismis 18, Pismis 19, NGC 6005, NGC 6253)
ID OLD OPEN CLUSTERS; STELLAR POPULATION SYNTHESIS; CCD PHOTOMETRY;
STAR-CLUSTERS; SPECTRAL EVOLUTION; GALACTIC NUCLEI; METALLICITIES;
VELOCITIES; DISK; AGE
AB CCD observations in the B, V, and I passbands have been used to generate color-magnitude diagrams (CMDs) for the southern open cluster candidates Pismis 18, Pismis 19, and NGC 6005, as well as for the old open cluster NGC 6253. The sample consists of about 1550 stars reaching down to V similar to 19 mag. From analysis of the CMDs, the physical reality of the three cluster candidates is confirmed and their reddening, distance, and age are derived, as well as those of NGC 6253. In addition, integrated spectra for Pismis 18, Pismis 19, and NGC 6253 covering a range from 3500 to 9200 Angstrom were obtained. The reddening, age, and metallicity of these three clusters were derived from Balmer and Ca II triplet equivalent widths by comparing the observed spectra with those of template clusters. The photometric and spectroscopic results allow us to conclude that Pismis 18, Pismis 19, and NGC 6005 are intermediate-age (t approximate to 1 Gyr), genuine open clusters, while NGC 6253 has an age t approximate to 5 Gyr. All these clusters are located approximately toward the Galactic center, between 1.5 and 2.7 kpc from the Sun. Their metallicities range over values that are typical of moderately metal-poor to moderately metal-rich open clusters.
C1 Univ Nacl Cordoba, Astron Observ, RA-5000 Cordoba, Argentina.
Univ Fed Rio Grande Sul, Inst Fis, Dept Astron, BR-91500970 Porto Alegre, RS, Brazil.
Kitt Peak Natl Observ, Natl Opt Astron Observ, Tucson, AZ 85726 USA.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Piatti, AE (reprint author), Univ Nacl Cordoba, Astron Observ, Laprida 854, RA-5000 Cordoba, Argentina.
NR 42
TC 38
Z9 38
U1 0
U2 0
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA
SN 0004-6256
J9 ASTRON J
JI Astron. J.
PD AUG
PY 1998
VL 116
IS 2
BP 801
EP 812
DI 10.1086/300443
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 115CW
UT WOS:000075646800018
ER
PT J
AU Gorosabel, J
Castro-Tirado, AJ
Brandt, S
Lund, N
AF Gorosabel, J
Castro-Tirado, AJ
Brandt, S
Lund, N
TI A BATSE-based search for repeaters in the sample of gamma-ray bursts
detected by the WATCH experiment
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE gamma rays : bursts
ID CONSTRAINTS
AB This study is the first known attempt to search for gamma-ray burst repeaters combining data from gamma-ray experiments flying on board different satellites and making use of information derived from the bursts detected simultaneously by all the experiments. The proposed method is suitable to correlate GRB data provided by experiments that overlap partially or totally in time.
As an application of this method we have correlated the positions of 57 gamma-ray bursts observed by WATCH/GRANAT and WATCH/EURECA with 1905 bursts detected by BATSE. Comparing the so-called "added correlation" between the WATCH and BATSE bursts with that obtained with simulated WATCH catalogues, we conclude that there is no indication of recurrent activity of WATCH bursts in the BATSE sample. We derive an upper limit of 15.8%, with a confidence level of 94%, for the number of WATCH gamma-ray bursts that could represent a population of repeaters in the BATSE sample.
C1 INTA, LAEFF, Lab Astrofis Espacial & Fis Fundamental, E-28080 Madrid, Spain.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Danish Space Res Inst, DK-2100 Copenhagen O, Denmark.
RP Gorosabel, J (reprint author), INTA, LAEFF, Lab Astrofis Espacial & Fis Fundamental, POB 50727, E-28080 Madrid, Spain.
EM jgu@laeff.esa.es
OI Castro-Tirado, A. J./0000-0003-2999-3563
NR 24
TC 5
Z9 5
U1 0
U2 0
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD AUG 1
PY 1998
VL 336
IS 1
BP 57
EP 62
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 110RP
UT WOS:000075394400011
ER
PT J
AU Ellis, R
McMahon, R
AF Ellis, R
McMahon, R
TI Measuring the cosmic deceleration
SO ASTRONOMY & GEOPHYSICS
LA English
DT Article
ID COSMOLOGICAL CONSTANT; HUBBLE DIAGRAM; IA SUPERNOVAE
C1 Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England.
Lawrence Berkeley Lab, Berkeley, CA USA.
RP Ellis, R (reprint author), Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.
NR 16
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1366-8781
J9 ASTRON GEOPHYS
JI Astron. Geophys.
PD AUG
PY 1998
VL 39
IS 4
BP 27
EP 29
PG 3
WC Astronomy & Astrophysics; Geochemistry & Geophysics
SC Astronomy & Astrophysics; Geochemistry & Geophysics
GA 106WD
UT WOS:000075172700021
ER
PT J
AU van Breugel, WJM
Stanford, SA
Spinrad, H
Stern, D
Graham, JR
AF van Breugel, WJM
Stanford, SA
Spinrad, H
Stern, D
Graham, JR
TI Morphological evolution in high-redshift radio galaxies and the
formation of giant elliptical galaxies
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE galaxies : active; galaxies : elliptical and lenticular, cD; galaxies :
photometry; galaxies : structure; radio continuum : galaxies
ID HUBBLE DEEP FIELD; LUMINOSITY FUNCTION; SURFACE PHOTOMETRY; ABELL
CLUSTERS; VLA SURVEY; ALIGNMENT; IDENTIFICATIONS; SPECTROSCOPY;
B2-0902+34; DICHOTOMY
AB We present deep near-infrared images of high-redshift radio galaxies (HzRGs) obtained with the near-infrared camera (NIRC) on the Keck I telescope. In most cases, the near-IR data sample rest wavelengths that are free of contamination from strong emission lines and at lambda(rest) > 4000 Angstrom, where older stellar populations, if present, might dominate the observed flux. At z > 3, the rest-frame optical morphologies generally have faint, large-scale (similar to 50 kpc) emission surrounding multiple, similar to 10 kpc components. The brightest of these components are often aligned with the radio structures. These morphologies change dramatically at 2 < z < 3, where the K-band images show single, compact structures without bright, radio-aligned features. The linear sizes (similar to 10 kpc) and luminosities [M(B-rest) similar to -20 to -22] of the individual components in the z > 3 HzRGs are similar to the total sizes and luminosities of normal radio-quiet star forming galaxies at z = 3-4. For objects where such data are available, our observations show that the line-free, near-IR colors of the z > 3 galaxies are very blue, consistent with models in which recent star formation dominates the observed light. Direct spectroscopic evidence for massive star formation in one of the z > 3 HzRGs exists (4C 41.17). Our results suggest that the z > 3 HzRGs evolve into much more massive systems than the radio-quiet galaxies and that they are qualitatively consistent with models in which massive galaxies form in hierarchical fashion through the merging of smaller star-forming systems. The presence of relatively luminous subcomponents along the radio axes of the z > 3 galaxies suggests a causal connection with the AGN. We compare the radio and near-IR sizes as a function of redshift and suggest that this parameter may be a measure of the degree to which the radio sources have induced star formation in the parent objects. We also discuss the Hubble diagram of radio galaxies, the possibility of a radio power dependence in the K-z relation, and its implications for radio galaxy formation. Finally, we present for the first time in published format basic radio and optical information on 3C 257 (z = 2.474), the highest redshift galaxy in the 3C sample and among the most powerful radio sources known.
C1 Univ Calif Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
RP van Breugel, WJM (reprint author), Univ Calif Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
EM wil@igpp.llnl.gov; adam@igpp.llnl.gov; spinrad@bigz.berkeley.edu;
dan@copacabana.berkeley.edu; jrg@graham.berkeley.edu
NR 79
TC 114
Z9 115
U1 0
U2 1
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 5720 SOUTH WOODLAWN AVE, CHICAGO, IL 60637-1603 USA
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD AUG 1
PY 1998
VL 502
IS 2
BP 614
EP 629
DI 10.1086/305925
PN 1
PG 16
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 152KF
UT WOS:000077776000009
ER
PT J
AU Stancil, PC
Havener, CC
Krstic, PS
Schultz, DR
Kimura, M
Gu, JP
Hirsch, G
Buenker, RJ
Zygelman, B
AF Stancil, PC
Havener, CC
Krstic, PS
Schultz, DR
Kimura, M
Gu, JP
Hirsch, G
Buenker, RJ
Zygelman, B
TI Charge transfer in collisions of C+ with H and H+ with C
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE atomic processes; ISM : atoms; supernovae : individual (SN 1987A)
ID ELECTRON-CAPTURE; ATOMIC-HYDROGEN; CROSS-SECTIONS; LOW-ENERGY; SI ATOMS;
IONS; IONIZATION; NEBULAE; H-2; NE
AB Charge transfer rate coefficients for collisions of C+ with H and H+ with C are presented for temperatures from 30,000 to 10(7) K and from 10 to 10(7) K, respectively. The rate coefficients were calculated from recommended cross sections deduced in a recent theoretical and experimental investigation that took into account previous measurements. Nonadiabatic radial coupling is the dominant mechanism for both reactions above similar to 50,000 K, but for lower temperatures the reaction of H+ with C proceeds primarily by radiative charge transfer. Implications, due to the magnitude of the rate coefficients, for various astrophysical environments are discussed.
C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
Rice Univ, Dept Phys, Houston, TX 77251 USA.
Yamaguchi Univ, Sch Allied Hlth Sci, Ube, Yamaguchi 755, Japan.
Berg Univ Gesamthsch Wuppertal, D-42097 Wuppertal, Germany.
RP Stancil, PC (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA.
EM stancil@mail.phy.ornl.gov; havener@mail.phy.ornl.gov;
krstic@mail.phy.ornl.gov; schultz@mail.phy.ornl.gov;
mineo@rikax1.riken.go.jp; gujian@wrcs1.urz.uni-wuppertal.de;
hirsch@wrcs1.urz.uni-wuppertal.de; buenker@wrcs1.urz.uni-wuppertal.de;
bernard@physics.unlv.edu
NR 34
TC 32
Z9 32
U1 0
U2 4
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 5720 SOUTH WOODLAWN AVE, CHICAGO, IL 60637-1603 USA
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD AUG 1
PY 1998
VL 502
IS 2
BP 1006
EP 1009
DI 10.1086/305937
PN 1
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 152KF
UT WOS:000077776000040
ER
PT J
AU Brown, GV
Beiersdorfer, P
Liedahl, DA
Widmann, K
Kahn, SM
AF Brown, GV
Beiersdorfer, P
Liedahl, DA
Widmann, K
Kahn, SM
TI Laboratory measurements and modeling of the Fe XVII X-ray spectrum
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE atomic data; atomic processes; line : identification; Sun : X-rays,
gamma rays; X-rays : general
ID BEAM ION-TRAP; ELECTRON-BEAM; COLLISION STRENGTHS; LINE INTENSITIES;
CROSS-SECTIONS; ACTIVE-REGION; ATOMIC DATA; ISOELECTRONIC SEQUENCE;
EXCITATION; EMISSION
AB Detailed measurements, line identifications, and modeling calculations of the Fe XVII L-shell emission spectrum between 9.8 and 17.5 Angstrom are presented. The measurements were carried out on an electron beam ion trap under precisely controlled conditions where electron-impact excitation followed by radiative cascades is the dominant line formation process. In addition to the strong transitions emanating from the n=3 shell, we identify and accurately determine wavelengths for transitions from higher shells up to n=11, including two electric quadrupole transitions that have not been previously identified. Various theoretical values, including new distorted wave calculations, are compared to our measurements, which establish definitive values for testing spectral modeling predictions. We fmd a value of 3.04 +/- 0.12 for the ratio of the intensity of the 2p-3d(1)P(1) resonance and of the 2p-3d D-3(1) intercombination line situated at 15.01 and 15.26 Angstrom, respectively. This value is higher than the values observed in solar spectra, which supports claims that the solar value is affected by resonant scattering. However, because our value is significantly lower than calculated values, the amount of scattering has probably been overestimated in past analyses. Comparisons of the measured intensity ratios of the transitions originating in levels of higher principal quantum number n with present distorted wave calculations show good agreement up to n = 6. The combined flux of all 2p-nd transitions with n greater than or equal to 5 and all 2s-np transitions with n = 4 and 5 relative to the flux of the 15.01 Angstrom resonance line has been measured to be 0.13(-0.03)(+0.04).
C1 Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Space Technol, Livermore, CA 94551 USA.
Auburn Univ, Dept Phys, Allison Lab 206, Auburn, AL 36849 USA.
RP Brown, GV (reprint author), Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Space Technol, 7000 East Ave, Livermore, CA 94551 USA.
NR 68
TC 145
Z9 146
U1 2
U2 3
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 5720 SOUTH WOODLAWN AVE, CHICAGO, IL 60637-1603 USA
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD AUG 1
PY 1998
VL 502
IS 2
BP 1015
EP 1026
DI 10.1086/305941
PN 1
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 152KF
UT WOS:000077776000042
ER
PT J
AU Hatano, Y
Hatano, N
Amano, H
Ueno, T
Sukhoruchkin, AK
Kazakov, SV
AF Hatano, Y
Hatano, N
Amano, H
Ueno, T
Sukhoruchkin, AK
Kazakov, SV
TI Aerosol migration near Chernobyl: Long-term data and modeling
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Article
DE air pollution; Chernobyl; aerosol migration; fractal; resuspension
ID ACCIDENT; RESUSPENSION; DISPERSION; SIMULATION; TRANSPORT; RELEASE;
EUROPE
AB Airborne particles from a polluted area can pose a long-term health hazard to residents nearby. However, the long-term prediction of aerosol migration has never been successful. We show in the present paper that a recently proposed model (Hatano and Hatano, 1997, Atmospheric Environment 31, 2297-2303) successfully reproduces data of the aerosol concentration measured near Chernobyl over a decade. The time dependence of the resuspension factor is also reproduced very well. In fitting our theoretical formula to the data, we obtain values of the fitting parameters that provide important information on the emission quantity and removal processes of nuclides from the accident. We show that 2200 days of measurement after the accident should be enough to predict the concentration in the air 10 years later. (C) 1998 Elsevier Science Ltd. All rights reserved.
C1 Inst Phys & Chem Res, Wako, Saitama 35101, Japan.
Univ Calif Los Alamos Natl Lab, EES 8 MS D401, Los Alamos, NM 87545 USA.
Univ Tokyo, Dept Phys, Tokyo 113, Japan.
Japan Atom Energy Res Inst, Tokai, Ibaraki 31911, Japan.
RADEC, UA-255620 Chernobyl, Ukraine.
RP Hatano, Y (reprint author), Inst Phys & Chem Res, 2-1 Hirosawa, Wako, Saitama 35101, Japan.
RI Hatano, Naomichi/K-8176-2012
OI Hatano, Naomichi/0000-0003-0277-1856
NR 26
TC 11
Z9 11
U1 0
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD AUG
PY 1998
VL 32
IS 14-15
BP 2587
EP 2594
DI 10.1016/S1352-2310(97)00511-6
PG 8
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 101LQ
UT WOS:000074870800015
ER
PT J
AU Nowak, DJ
Cardelino, CA
Rao, ST
Taha, H
AF Nowak, DJ
Cardelino, CA
Rao, ST
Taha, H
TI Estimating cost effectiveness of residential yard trees for improving
air quality in Sacramento, California, using existing models
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Editorial Material
ID OZONE
C1 USDA, Forest Serv, NE Res Stn, Syracuse, NY 13210 USA.
Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
SUNY Albany, Dept Earth & Atmospher Sci, Albany, NY 12222 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Nowak, DJ (reprint author), USDA, Forest Serv, NE Res Stn, Syracuse, NY 13210 USA.
NR 2
TC 4
Z9 4
U1 3
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD AUG
PY 1998
VL 32
IS 14-15
BP 2709
EP 2710
PG 2
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 101LQ
UT WOS:000074870800027
ER
PT J
AU Gaffney, JS
Marley, NA
AF Gaffney, JS
Marley, NA
TI New directions - Uncertainties of aerosol effects in global climate
models
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Article
C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA.
RP Gaffney, JS (reprint author), Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA.
NR 0
TC 8
Z9 8
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD AUG
PY 1998
VL 32
IS 16
BP 2873
EP 2874
DI 10.1016/S1352-2310(98)80001-0
PG 2
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 101CY
UT WOS:000074853100016
ER
PT J
AU Sullivan, M
Rena, G
Begg, F
Gordon, L
Olsen, AS
Houslay, MD
AF Sullivan, M
Rena, G
Begg, F
Gordon, L
Olsen, AS
Houslay, MD
TI Identification and characterization of the human homologue of the short
PDE4A cAMP-specific phosphodiesterase RD1 (PDE4A1) by analysis of the
human HSPDE4A gene locus located at chromosome 19p13.2
SO BIOCHEMICAL JOURNAL
LA English
DT Article
ID CYCLIC-AMP PHOSPHODIESTERASE; SITU HYBRIDIZATION MAP; TERMINAL SPLICE
REGION; MOLECULAR-CLONING; NUCLEOTIDE PHOSPHODIESTERASES; MEMBRANE
ASSOCIATION; CHIMERIC CONSTRUCTS; MAMMALIAN HOMOLOGS; RPDE-6 RNPDE4A5;
COS7 CELLS
AB The HSPDE4A gene spans 50 kb, consists of at least 17 exons and is orientated 5'-3', telomere to centromere. It is located at chromosome 19p13.2, being 350 kb proximal to the gene encoding TYK2 and 850 kb distal to the gene encoding the low-density lipoprotein receptor. Its structure is consistent with the production of active 'long' and 'short' isoenzymes as the result of alternative mRNA splicing at two splice junctions. Identified is the single alternatively spliced 5' exon encoding the unique N-terminal region of the long isoenzyme HSPDE4A4B (pde46). The upstream conserved regions, UCR1 and UCR2, which form characteristic domains of PDE4 long forms are each encoded by three exons. The PDE4A-subfamily-specific linker region LR1, which joins UCR1 and UCR2, is encoded by two exons, whereas LR2, which joins UCR2 to the catalytic unit, is encoded by a single exon. Identification of exons encoding an enzymically inactive product of this gene, HSPDE4A8A (2el), indicates that this is an authentic gene product. The 5' exon encoding the unique N-terminal region of the human homologue of the rodent isoform RNPDE4A1A (RD1) was located, and the splice junction used to produce this short PDE4A isoform shown to occur at a different position from that seen in both the rat PDE4B and PDE4D genes. Reverse transcriptase PCR analysis indicates that RD1 homologues are conserved across species, having a conserved membrane-targeting region and a hypervariable LR2 region. Human RD 1 was expressed transiently in COS-7 cells and detected as an 83 kDa species primarily associated with the high-speed membrane fraction. Human RD1 exhibited a K-m for cAMP of about 3 mu M, an IC50 value for inhibition by the PDE4-selective inhibitor rolipram of about 0.3 mu M and was considerably more thermostable than rat RD1, Human RD 1 was generated as a mature 80 kDa species in an in vitro transcription-translation system and shown to be capable of binding to membranes. Knowledge of the gene structure and the associated sequence information should facilitate analysis of the involvement of PDE4A in hereditary disorders that may result from alterations in enzyme expression, activity, regulation and intracellular targeting and serve as a resource for determining authenticity of cloned PDE4A species.
C1 Univ Glasgow, Mol Pharmacol Grp, Div Biochem & Mol Biol, IBLS, Glasgow G12 8QQ, Lanark, Scotland.
Univ Calif Lawrence Livermore Natl Lab, Ctr Human Genome, Biol & Biotechnol Res Program, Livermore, CA 94550 USA.
RP Houslay, MD (reprint author), Univ Glasgow, Mol Pharmacol Grp, Div Biochem & Mol Biol, IBLS, Davidson & Wolfson Bldg, Glasgow G12 8QQ, Lanark, Scotland.
RI Houslay, Miles/A-6825-2011
FU Wellcome Trust
NR 47
TC 38
Z9 41
U1 0
U2 1
PU PORTLAND PRESS
PI LONDON
PA 59 PORTLAND PLACE, LONDON, ENGLAND W1N 3AJ
SN 0264-6021
J9 BIOCHEM J
JI Biochem. J.
PD AUG 1
PY 1998
VL 333
BP 693
EP 703
PN 3
PG 11
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 110NJ
UT WOS:000075387000029
PM 9677330
ER
PT J
AU Myszka, DG
He, X
Dembo, M
Morton, TA
Goldstein, B
AF Myszka, DG
He, X
Dembo, M
Morton, TA
Goldstein, B
TI Extending the range of rate constants available from BIACORE:
Interpreting mass transport-influenced binding data
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID SURFACE-PLASMON RESONANCE; BIOMOLECULAR INTERACTION ANALYSIS; KINETICS;
ANTIBODY; PROTEIN; BIOSENSOR; SYSTEM; MODEL
AB Surface-based binding assays are often influenced by the transport of analyte to the sensor surface. Using simulated data sets, we test a simple two-compartment model to see if its description of transport and binding is sufficient to accurately analyze BIACORE data. First we present a computer model that can generate realistic BIACORE data. This model calculates the laminar flow of analyte within the flow cell, its diffusion both perpendicular and parallel to the sensor surface, and the reversible chemical reaction between analyte and immobilized reactant. We use this computer model to generate binding data under a variety of conditions. An analysis of these data sets with the two-compartment model demonstrates that good estimates of the intrinsic reaction rate constants are recovered even when mass transport influences the binding reaction. We also discuss the conditions under which the two-compartment model can be used to determine the diffusion coefficient of the analyte. Our results illustrate that this model can significantly extend the range of association rate constants that can be accurately determined from BIACORE.
C1 Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA.
Univ Utah, Huntsman Canc Inst, Salt Lake City, UT 84112 USA.
Boston Univ, Dept Bioengn, Boston, MA 02215 USA.
Australian Natl Univ, John Curtin Sch Med Res, Div Biochem & Mol Biol, Canberra, ACT 0200, Australia.
RP Goldstein, B (reprint author), Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, T-10,MS K710, Los Alamos, NM 87545 USA.
EM bxg@lanl.gov
RI Dembo, Micah/C-2755-2013
FU NIGMS NIH HHS [GM35556]
NR 38
TC 280
Z9 286
U1 3
U2 26
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD AUG
PY 1998
VL 75
IS 2
BP 583
EP 594
PG 12
WC Biophysics
SC Biophysics
GA 107KB
UT WOS:000075206000002
PM 9675161
ER
PT J
AU Keizer, J
Smith, GD
Ponce-Dawson, S
Pearson, JE
AF Keizer, J
Smith, GD
Ponce-Dawson, S
Pearson, JE
TI Saltatory propagation of Ca2+ waves by Ca2+ sparks
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID RYANODINE RECEPTOR ADAPTATION; RAT-HEART CELLS; CALCIUM SPARKS; RELEASE;
MUSCLE; OSCILLATIONS; DIFFUSION; BUFFERS
AB Punctate releases of Ca2+, called Ca2+ sparks, originate at the regular array of t-tubules in cardiac myocytes and skeletal muscle. During Ca2+ overload sparks serve as sites for the initiation and propagation of Ca2+ waves in myocytes. Computer simulations of spark-mediated waves are performed with model release sites that reproduce the adaptive Ca2+ release observed for the ryanodine receptor. The speed of these waves is proportional to the diffusion constant of Ca2+, D, rather than root D, as is true for reaction-diffusion equations in a continuous excitable medium. A simplified "fire-diffuse-fire" model that mimics the properties of Ca2+-induced Ca2+ release (CICR) from isolated sites is used to explain this saltatory mode of wave propagation. Saltatory and continuous wave propagation can be differentiated by the temperature and Ca2+ buffer dependence of wave speed.
C1 Univ Calif Davis, Inst Theoret Dynam, Davis, CA 95616 USA.
Univ Calif Davis, Sect Neurobiol Physiol & Behav, Davis, CA 95616 USA.
NIDDKD, Math Res Branch, NIH, Bethesda, MD 20814 USA.
Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina.
Univ Buenos Aires, Fac Ciencias Exactas & Nat, IAFE, RA-1428 Buenos Aires, DF, Argentina.
Univ Calif Los Alamos Natl Lab, XCM, Los Alamos, NM 87545 USA.
RP Keizer, J (reprint author), Univ Calif Davis, Inst Theoret Dynam, 2201 Acad Surge Bldg,1 Shields Ave, Davis, CA 95616 USA.
OI Ponce Dawson, Silvina/0000-0001-6550-4267
FU NCRR NIH HHS [R01 RR10081]
NR 25
TC 129
Z9 132
U1 0
U2 5
PU BIOPHYSICAL SOCIETY
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD AUG
PY 1998
VL 75
IS 2
BP 595
EP 600
PG 6
WC Biophysics
SC Biophysics
GA 107KB
UT WOS:000075206000003
PM 9675162
ER
PT J
AU Forstner, M
Kriechbaum, M
Laggner, P
Wallimann, T
AF Forstner, M
Kriechbaum, M
Laggner, P
Wallimann, T
TI Structural changes of creatine kinase upon substrate binding
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID SMALL-ANGLE SCATTERING; YEAST HEXOKINASE-A; LIGAND-BINDING;
NUCLEIC-ACIDS; FORCE-FIELD; PROTEINS; GLUCOSE; ISOENZYMES; SEQUENCE;
COMPLEX
AB Small-angle x-ray scattering was used to investigate structural changes upon binding of individual substrates or a transition state analog complex (TSAC; Mg-ADP, creatine, and KNO3) to creatine kinase (CK) isoenzymes (dimeric muscle-type (M)-CK and octameric mitochondrial (MI)-CK) and monomeric arginine kinase (AK). Considerable changes in the shape and the size of the molecules occurred upon binding of Mg-nucleotide or TSAC, The radius of gyration of MI-CK was reduced from 55.6 Angstrom (free enzyme) to 48.9 Angstrom (enzyme plus Mg-ATP) and to 48.2 Angstrom (enzyme plus TSAC), M-CK showed similar changes from 28.0 Angstrom (free enzyme) to 25.6 Angstrom (enzyme plus Mg-ATP) and to 25.5 Angstrom (enzyme plus TSAC). Creatine alone did not lead to significant changes in the radii of gyration, nor did free ATP or ADP. AK also showed a change of the radius of gyration from 21.5 Angstrom (free enzyme) to 19.7 Angstrom (enzyme plus Mg-ATP), whereas with arginine alone only a minor change could be observed. The primary change in structure as seen with monomeric AK seems to be a Mg-nucleotide-induced domain movement relative to each other, whereas the effect of substrate may be of local order only. In CK, however, additional movements have to be involved.
C1 Swiss Fed Inst Technol, Inst Cell Biol, CH-8093 Zurich, Switzerland.
Austrian Acad Sci, Inst Biophys & Xray Struct Res, A-8010 Graz, Austria.
RP Forstner, M (reprint author), Univ Calif Lawrence Livermore Natl Lab, LLNL, BBRP, L-452, Livermore, CA 94551 USA.
RI Wallimann, Theo/C-6047-2008;
OI Kriechbaum, Manfred/0000-0002-3852-4198
NR 31
TC 65
Z9 65
U1 0
U2 2
PU BIOPHYSICAL SOCIETY
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD AUG
PY 1998
VL 75
IS 2
BP 1016
EP 1023
PG 8
WC Biophysics
SC Biophysics
GA 107KB
UT WOS:000075206000043
PM 9675202
ER
PT J
AU Carr, DB
Garbin, HD
AF Carr, DB
Garbin, HD
TI Discriminating ripple-fired explosions with high-frequency (> 16 Hz)
data
SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
LA English
DT Article
ID CHEMICAL EXPLOSIONS; QUARRY BLASTS; EARTHQUAKES; SPECTRA
AB Most ripple-fired explosions have a unique signature in the spectrum that can be used to quickly identify them when monitoring the Comprehensive Test Ban Treaty. We want to know the importance of high-frequency (>16 Hz) seismic data in identifying these explosions. The deployable seismic verification system (DSVS) in Wyoming records data up to 50 Hz with good signal to noise, so it is an excellent source for determining the benefits of recording data over 16 Hz, We developed a database of 118 known earthquakes and 176 known ripple-fired explosions. We calculated a binary spectrogram and an average binary spectrum for each event and developed criteria based on the number of peaks and nulls above certain thresholds to classify events as ripple-fired explosions. Using data at frequencies up to 50 Hz, 50% of the known ripple-fired explosions were correctly identified, and another 22% had banding in the spectrogram but did not meet the established criteria. The other 27% of the known ripple-fired explosions had no banding. To test the importance of high-frequency (>16 Hz) data, we recalculated spectrograms between 0 and 16 Hz for the 135 known ripple-fired explosions and earthquakes that had banding. Eleven of the 135 could not be identified correctly if data over 16 Hz was excluded; 5 had information at frequencies over 16 Hz that was critical to seeing any banding. But the vast majority of events were correctly identified in the pass band of 0 to 16 Hz, suggesting that higher-frequency data do not significantly help to identify most ripple-fired explosions in Wyoming.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Carr, DB (reprint author), Sandia Natl Labs, POB 5800,MS 0655, Albuquerque, NM 87185 USA.
NR 16
TC 7
Z9 7
U1 0
U2 0
PU SEISMOLOGICAL SOC AMER
PI EL CERRITO
PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 USA
SN 0037-1106
J9 B SEISMOL SOC AM
JI Bull. Seismol. Soc. Amer.
PD AUG
PY 1998
VL 88
IS 4
BP 963
EP 972
PG 10
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 113ED
UT WOS:000075536600006
ER
PT J
AU Beresnev, IA
Field, EH
Van Den Abeele, K
Johnson, PA
AF Beresnev, IA
Field, EH
Van Den Abeele, K
Johnson, PA
TI Magnitude of nonlinear sediment response in Los Angeles basin during the
1994 Northridge, California, earthquake
SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
LA English
DT Article
ID STRONG GROUND MOTION; SITE-RESPONSE; SOIL RESPONSE; AMPLIFICATION;
AFTERSHOCKS; BEHAVIOR; WAVES; PATH
AB The study of nonlinear site response has practical difficulties due to large ambiguities in isolating local response from other competing effects. We chose a sedimentary site LF6 in Los Angeles basin that (1) has the closest reference rock sites available, compared to other stations, allowing an accurate estimation of local amplification, and (2) illustrates clear resonance in the near surface. In our opinion, this case represents the least ambiguity in the identification of possible nonlinearity. The site responses during the Northridge, the 1987 Whittler Narrows events and the Northridge aftershocks are compared. The station shows a fundamental resonance-frequency change between the higher- and lower-amplitude motions in the entire ensemble of 17 events used. The net shear-modulus reduction during the Northridge event is a factor of 1.3 to 1.4 compared to the Whittler Narrows event and is a factor of 1.7 compared to the aftershocks. This result provides guidance of what to expect at other sites in the basin, where the nonlinear response is less easy to characterize.
C1 Carleton Univ, Dept Earth Sci, Ottawa, ON K1S 5B6, Canada.
Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA.
Katholieke Univ Leuven, Fac Toegepaste Wetenschappen, Dept Burgerlijke Bouwkunde, B-3001 Heverlee, Belgium.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Beresnev, IA (reprint author), Carleton Univ, Dept Earth Sci, 1125 Colonel Dr, Ottawa, ON K1S 5B6, Canada.
NR 27
TC 26
Z9 26
U1 0
U2 1
PU SEISMOLOGICAL SOC AMER
PI EL CERRITO
PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 USA
SN 0037-1106
J9 B SEISMOL SOC AM
JI Bull. Seismol. Soc. Amer.
PD AUG
PY 1998
VL 88
IS 4
BP 1079
EP 1084
PG 6
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 113ED
UT WOS:000075536600017
ER
PT J
AU Hang, B
Chenna, A
Sagi, J
Singer, B
AF Hang, B
Chenna, A
Sagi, J
Singer, B
TI Differential cleavage of oligonucleotides containing the benzene-derived
adduct, 1,N-6-benzetheno-dA, by the major human AP endonuclease HAP1 and
Escherichia coli exonuclease III and endonuclease IV
SO CARCINOGENESIS
LA English
DT Article
ID APURINIC ENDONUCLEASE; EXOCYCLIC ADDUCT; DNA GLYCOSYLASES; ABASIC SITES;
REPAIR; RECOGNITION; 3-METHYLADENINE; MECHANISM; SUBSTRATE; RESIDUES
AB We report here that the newly synthesized DNA adduct, 1,N-6-benzetheno-dA (pBQ-dA), in defined oligonucleotides [Chenna and Singer, Chem, Res. Toxicol,, 8, 865-874], is a substrate for the major human AP endonuclease, HAP1, and the Escherichia coli AP endonucleases, exonuclease III and endonuclease IV. The mechanism of cleavage is identical to that reported previously for 3,N-4-benzetheno-dC (pBQ-dC) and leads to a phosphodiester bond cleavage 5' to the adduct, There are, however, significant differences in the rate of cleavage of this adduct by these enzymes. The two bacterial AP endonucleases are both much more efficient than the human repair enzyme. In addition, using two random oligodeoxynucleotide sequences containing a single pBQ-dA, exonuclease III and endonuclease IV are similarly active, while HAP1 shows a distinct sequence preference of similar to 10-fold in efficiency of cleavage. The repair of this adduct by the three recombinant enzymes is further confirmed by using both active site mutant HAP1 proteins and by E,coli mutant strains lacking exonuclease III and/or endonuclease IV. This sequence-dependent repair of pBQ-dA by HAP1 may play an important role in modulating benzene-induced carcinogenesis.
C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Donner Lab, Berkeley, CA 94720 USA.
RP Singer, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Donner Lab, Berkeley, CA 94720 USA.
FU NCI NIH HHS [CA 72079, CA 47723]
NR 28
TC 29
Z9 32
U1 0
U2 1
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0143-3334
J9 CARCINOGENESIS
JI Carcinogenesis
PD AUG
PY 1998
VL 19
IS 8
BP 1339
EP 1343
DI 10.1093/carcin/19.8.1339
PG 5
WC Oncology
SC Oncology
GA 111TW
UT WOS:000075454900003
PM 9744526
ER
PT J
AU Boyle, TJ
Ingersoll, D
Alam, TM
Tafoya, CJ
Rodriguez, MA
Vanheusden, K
Doughty, DH
AF Boyle, TJ
Ingersoll, D
Alam, TM
Tafoya, CJ
Rodriguez, MA
Vanheusden, K
Doughty, DH
TI Rechargeable lithium battery cathodes. Nonaqueous synthesis,
characterization, and electrochemical properties of LiCoO2
SO CHEMISTRY OF MATERIALS
LA English
DT Article
ID SYSTEM CO-LI2CO3; THIN-FILMS; ELECTRODE; OXIDES; CELLS; ROUTE;
PERFORMANCE; CRYSTALLINE; DEPOSITION; RESONANCE
AB A nonaqueous coprecipitation process has been developed to prepare controlled stoichiometry lithium cobalt oxide precipitates. The process involved mixing a methanolic "LiCo(NO3)(3)" solution with a methanolic solution containing tetramethylammonium oxalate as a precipitating agent. The resulting oxalates were readily converted to phase-pure lithium cobalt oxide at 800 degrees C under an oxygen atmosphere. The various starting solutions, oxalate precipitates, and the resulting oxides have been extensively characterized using a variety of techniques, including multinuclear NMR, TGA/DTA, EPR, and XRD analyses. Results indicate that the strong interaction between the metals (Li and Co) that occurred in solution was maintained during precipitation. The calcined precipitate revealed that the desired LiCoO2 phase was formed at 800 degrees C under an O-2 atmosphere. When electrochemically cycled, the material exhibited an initial capacity of similar to 133 (mA h)/g with a fade of 0.02% in capacity per cycle.
C1 Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
USAF, Res Lab, Kirtland AFB, NM 87117 USA.
RP Boyle, TJ (reprint author), Sandia Natl Labs, Adv Mat Lab, 1001 Univ Blvd,SE, Albuquerque, NM 87106 USA.
NR 52
TC 27
Z9 27
U1 1
U2 28
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0897-4756
J9 CHEM MATER
JI Chem. Mat.
PD AUG
PY 1998
VL 10
IS 8
BP 2270
EP 2276
DI 10.1021/cm9802088
PG 7
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 112QE
UT WOS:000075504900038
ER
PT J
AU McNab, WW
Ruiz, R
AF McNab, WW
Ruiz, R
TI Palladium-catalyzed reductive dehalogenation of dissolved chlorinated
aliphatics using electrolytically-generated hydrogen
SO CHEMOSPHERE
LA English
DT Article
ID DEGRADATION; IRON
AB Recent studies have shown that reductive dehalogenation of chlorinated hydrocarbons by hydrogen occurs rapidly in the presence of a palladium catalyst. The speed and completeness of these reactions may offer advantages for groundwater remediation. A practical design challenge arises with the need to expeditiously saturate the aqueous phase with hydrogen. To address this, a two-stage treatment column (hydrogen generator and catalytic reactor) has been developed. The first stage consists of an undivided electrolyzer cell which generates hydrogen by electrolyzing the influent water. The second stage contains a catalyst bed of palladium metal supported on alumina beads. This reactor has been tested with groundwater containing various chlorinated aliphatics. Using a flow rate of 300 ml/min and a current of 4 amps under a potential of 8 volts, removal efficiencies greater than 95% were achieved for PCE, TCE, 1,1-DCE, and carbon tetrachloride with residence times on the order of 2 minutes. Chloroform and 1,2-DCA appear less susceptible to dehalogenation by this process. These results imply that dissolved oxygen present in solution does not completely inhibit reduction of the chlorinated hydrocarbons on the catalyst. (C)1998 Elsevier Science Ltd. All rights reserved.
C1 Sandia Natl Labs, Environm Restorat Div, Livermore, CA 94551 USA.
RP McNab, WW (reprint author), Sandia Natl Labs, Environm Restorat Div, Livermore, CA 94551 USA.
NR 13
TC 34
Z9 34
U1 1
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0045-6535
EI 1879-1298
J9 CHEMOSPHERE
JI Chemosphere
PD AUG
PY 1998
VL 37
IS 5
BP 925
EP 936
DI 10.1016/S0045-6535(98)00095-2
PG 12
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 103XP
UT WOS:000074983400008
ER
PT J
AU O'Briant, KC
Ali, SY
Weier, HUG
Bepler, G
AF O'Briant, KC
Ali, SY
Weier, HUG
Bepler, G
TI An 84-kilobase physical map and repeat polymorphisms of the
gastrin/cholecystokinin brain receptor region at the junction of
chromosome segments 11p15.4 and 15.5
SO CHROMOSOME RESEARCH
LA English
DT Article
DE CCK-brain receptor; chromosome 11; lung cancer; polymorphic markers
ID CELL LUNG-CANCER; SUPPRESSOR REGIONS; DELETION; DNA
C1 Duke Univ, Med Ctr, Dept Med, Thorac Oncol Program, Durham, NC 27710 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA USA.
RP Bepler, G (reprint author), Duke Univ, Med Ctr, Dept Med, Thorac Oncol Program, Durham, NC 27710 USA.
EM beple001@mc.duke.edu
FU NCI NIH HHS [1RO1 CA 70317-01A1]
NR 10
TC 1
Z9 2
U1 0
U2 0
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0967-3849
J9 CHROMOSOME RES
JI Chromosome Res.
PD AUG
PY 1998
VL 6
IS 5
BP 415
EP 418
DI 10.1023/A:1009289625352
PG 4
WC Biochemistry & Molecular Biology; Genetics & Heredity
SC Biochemistry & Molecular Biology; Genetics & Heredity
GA 146BP
UT WOS:000077407700011
PM 9872672
ER
PT J
AU Ryan, PC
Conrad, ME
Brown, K
Chamberlain, CP
Reynolds, RC
AF Ryan, PC
Conrad, ME
Brown, K
Chamberlain, CP
Reynolds, RC
TI Oxygen isotope compositions of mixed-layer serpentine-chlorite and
illite-smectite in the Tuscaloosa Formation (US Gulf Coast):
Implications for pore fluids and mineralogic reactions
SO CLAYS AND CLAY MINERALS
LA English
DT Article
DE diagenesis; illite-smectite; oxygen isotopes; sandstone;
serpentine-chlorite; Tuscaloosa Formation
ID SOUTHERN NORTH-SEA; X-RAY-DIFFRACTION; ARGILLACEOUS SEDIMENTS;
CLAY-MINERALS; DIAGENESIS; SANDSTONE; ORIGIN; BERTHIERINE; BASIN; ROCKS
AB Oxygen isotopic compositions were determined for coexisting mixed-layer serpentine-chlorite (Sp-Ch) and illite-smectite (I-S) from 5 Tuscaloosa Formation sandstone cores sampled between 1937 and 5470 m burial depth. High gradient magnetic separation (HGMS) was used to concentrate Sp-Ch and I-S from the <0.5 mu m fraction of each core sample into fractions with a range in the Sp-Ch:I-S ratio, and end-member delta(18)O compositions were determined by extrapolation. The Sp-Ch delta(18)O values range from +10.4 to 13.7 parts per thousand and increase with burial between 3509 and 5470 m. The only exception is Sp-Ch from 1937 m, which has an anomalously high delta(18)O value of +12.6 parts per thousand. The I-S delta(18)O values range from +16.1 to 17.3 parts per thousand and do not change significantly between 3509 and 5470 m burial depth.
Pore water delta(18)O compositions calculated from Sp-Ch and I-S values and measured borehole temperatures range from -2.6 to +10.3 parts per thousand. The isotopically light values indicate that Sp-Ch formed at shallow burial depths in the presence of brackish to marine water and/or meteoric water. The depth-related increase in delta(18)O of Sp-Ch is attributed to oxygen exchange between mineral and pore water during diagenetic mineral reactions. Increasing delta(18)O values, in conjunction with XRD and SEM data, indicate that transformation of serpentine layers to chlorite layers and Ibb polytype layers to Iaa polytype layers occurred on a layer-by-layer basis when individual layers dissolved and recrystallized within the confines of coherent crystals. Possible explanations for the variation in I-S delta(18)O values include depth-related differences in pore water delta(18)O values present at the time of I-S crystallization, contamination by detrital 2M(1) mica and 1M polytype rotations that facilitated oxygen exchange.
C1 Salish Kootenai Coll, Environm Sci Program, Pablo, MT 59855 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA.
RP Ryan, PC (reprint author), Salish Kootenai Coll, Environm Sci Program, Pablo, MT 59855 USA.
RI Conrad, Mark/G-2767-2010
NR 60
TC 1
Z9 1
U1 0
U2 6
PU CLAY MINERALS SOC
PI CHANTILLY
PA 3635 CONCORDE PKWY, STE 500, CHANTILLY, VA 20151-1125 USA
SN 0009-8604
EI 1552-8367
J9 CLAY CLAY MINER
JI Clay Clay Min.
PD AUG
PY 1998
VL 46
IS 4
BP 357
EP 368
DI 10.1346/CCMN.1998.0460401
PG 12
WC Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil
Science
SC Chemistry; Geology; Mineralogy; Agriculture
GA 130UF
UT WOS:000076538200001
ER
PT J
AU Ward, DB
Brady, PV
AF Ward, DB
Brady, PV
TI Effect of Al and organic acids on the surface chemistry of kaolinite
SO CLAYS AND CLAY MINERALS
LA English
DT Article
DE aluminum; organic acids; oxalate; surface change
ID ELECTRICAL DOUBLE-LAYER; OXIDE-WATER INTERFACE; TEMPERATURE-DEPENDENCE;
DISSOLUTION; COMPLEXATION; ALUMINA; CHARGE; MODEL; RATES; PH
AB The cause of pH and ionic strength-dependent proton and hydroxyl adsorption onto kaolinite is specific binding at edge Al and Si sites, and it can be modeled as a function of temperature with a triple layer model (TLM) of the mineral-solution interface. Exchange of Al for protons and hydroxyls is observed at low pH, with a stoichiometry approaching 1:3 (Al:H(+)). Adsorption of organic acids from dilute solutions depends on: 1) solution pH; 2) the functionality of the acid; and, to a lesser extent, 3) temperature. Such adsorption may occur primarily at Al sites exposed on kaolinite edges, as indicated by sorption experiments on the constituent oxides, where negligible sorption was observed on SiO(2) (quartz), but was significant on Al(2)O(3) (corundum) surfaces. Under similar conditions, oxalate adsorbs more strongly than acetate or formate to aluminol sites.
C1 Jacobs Engn Grp Inc, Albuquerque, NM 87110 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Ward, DB (reprint author), Jacobs Engn Grp Inc, 2155 Louisiana Blvd,Suite 10000, Albuquerque, NM 87110 USA.
NR 32
TC 45
Z9 48
U1 4
U2 9
PU CLAY MINERALS SOC
PI CHANTILLY
PA 3635 CONCORDE PKWY, STE 500, CHANTILLY, VA 20151-1125 USA
SN 0009-8604
J9 CLAY CLAY MINER
JI Clay Clay Min.
PD AUG
PY 1998
VL 46
IS 4
BP 453
EP 465
DI 10.1346/CCMN.1998.0460410
PG 13
WC Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil
Science
SC Chemistry; Geology; Mineralogy; Agriculture
GA 130UF
UT WOS:000076538200010
ER
PT J
AU Pawson, S
Fiorino, M
AF Pawson, S
Fiorino, M
TI A comparison of reanalyses in the tropical stratosphere. Part 1: Thermal
structure and the annual cycle
SO CLIMATE DYNAMICS
LA English
DT Article
ID SYSTEM; FORECASTS
AB An intercomparison of the thermal structure and the annual cycle in the tropical lower stratosphere of two reanalysis datasets is presented. These are from the National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) and the European Centre for Medium Range Weather Forecasts (ECMWF Re-Analysis: ERA). Generally, the ERA data are coldest and in better agreement with radiosonde observations; this is particularly apparent at 100 hPa where there is also a strong geographic bias, the maximum differences (more than 4 K) occurring over the southern Pacific and the Indian Ocean, with much smaller (sometimes reversed) differences over land. The NCEP temperatures are biased towards satellite-derived values, while the ERA data resolve the low tropopause temperatures much better. The lower ERA temperatures have important implications for the cross-tropopause exchange of water vapor. The meridional-height structure of the annual cycles agree quite well, but the amplitude in the ERA data is about 50% stronger than in NCEP at 70 hPa (in better agreement with previous studies) and weaker at lower pressures. As in previous studies, an anticorrelation is found between the tropical and extratropical temperatures of the reanalyses. The mean meridional flow at the equator is northward all year at all stratospheric levels in the NCEP data, implying a mass transport from the Southern to the Northern Hemisphere; in the ERA data the expected annual cycle (flow from summer to winter) is reproduced with very small annual mean exchange.
C1 Free Univ Berlin, Inst Meteorol, D-1000 Berlin, Germany.
Univ Calif Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, Livermore, CA USA.
RP Pawson, S (reprint author), NASA, Goddard Space Flight Ctr, USRA, Code 916, Greenbelt, MD 20771 USA.
EM pawson@polska.gsfc.nasa.gov
RI Fiorino, Michael/N-4150-2014; Pawson, Steven/I-1865-2014
OI Fiorino, Michael/0000-0002-2819-8157; Pawson, Steven/0000-0003-0200-717X
NR 28
TC 53
Z9 53
U1 0
U2 0
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0930-7575
J9 CLIM DYNAM
JI Clim. Dyn.
PD AUG
PY 1998
VL 14
IS 9
BP 631
EP 644
DI 10.1007/s003820050246
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 108VU
UT WOS:000075287100002
ER
PT J
AU Pawson, S
Fiorino, M
AF Pawson, S
Fiorino, M
TI A comparison of reanalyses in the tropical stratosphere. Part 2: The
quasi biennial oscillation
SO CLIMATE DYNAMICS
LA English
DT Article
ID CIRCULATION; MODEL; CYCLE; QBO
AB Reanalysis datasets potentially offer the opportunity to examine the tropical quasi-biennial oscillation (QBO) in greater detail than in the Fast, including the associated meridional circulation and the links with other parts of the atmosphere. For such studies to be useful, the QBO represented by the reanalyses should be realistic. In this work? the QBO in the ERA and NCEP reanalyses is validated against rawinsonde observations from Singapore. Monthly mean data are used. In the lower stratosphere (at 50 hPa and 30 hPa) the ERA QBO is reasonable: although the wind extrema in both phases are too weak and the vertical shear and the temperature anomalies are too small. The NCEP QBO is weaker still. At 10 hPa neither reanalysis system performs well, both systems failing to reproduce the westerlies, possibly because of the proximity of the upper boundary. The Singapore wind is representative of the zonal means in the reanalyses. The weak wind extrema in the reanalyses would not support a wave-mean flow interaction theory of the QBO, because a large portion of the gravity wave spectrum which would be absorbed in reality would be transmitted beyond 10 hPa. The stronger shear zones captured in the ERA data, are associated with larger, more realistic temperature perturbations near 30 hPa. The northward velocities in the NCEP data show a more realistic structure than in the ERA reanalysis, where they are dominated by a Vertical "gridpoint wave" structure in the lowermost stratosphere. Despite the shortcomings of the reanalyses, the high correlations of the wind at 30 hPa and 50 hPa with the observations at Singapore mean that the reanalyses could potentially be used to examine the effects of the QBO away from the tropical stratosphere. Future reanalyses need to take full account of the wind shears evident in the rawinsonde observations and use models with an adequate resolution to capture these vertical scales.
C1 Univ Calif Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, Livermore, CA USA.
Free Univ Berlin, Inst Meteorol, D-1000 Berlin, Germany.
RI Fiorino, Michael/N-4150-2014; Pawson, Steven/I-1865-2014
OI Fiorino, Michael/0000-0002-2819-8157; Pawson, Steven/0000-0003-0200-717X
NR 27
TC 43
Z9 43
U1 0
U2 0
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0930-7575
J9 CLIM DYNAM
JI Clim. Dyn.
PD AUG
PY 1998
VL 14
IS 9
BP 645
EP 658
DI 10.1007/s003820050247
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 108VU
UT WOS:000075287100003
ER
PT J
AU Radziszewski, JG
Kaszynski, P
Friederichsen, A
Abildgaard, J
AF Radziszewski, JG
Kaszynski, P
Friederichsen, A
Abildgaard, J
TI Bent cyclopenta-2,4-dienylideneketene: Spectroscopic and ab initio study
of reactive intermediate
SO COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS
LA English
DT Article
DE matrix isolation; photolysis of phthalic anhydride; IR spectrum of
cyclopenta-2,4-dienylideneketene; ketenes; benzyne; ab initio
calculations
ID ARGON MATRIX; INFRARED-SPECTROSCOPY; BENZYNE; PROPADIENONE;
CYCLOPENTADIENYLIDENEKETENE; DIFLUOROPROPADIENONE; REARRANGEMENT;
PYROLYSIS; ANHYDRIDE; SPECTRUM
AB Results of an experimental and theoretical study of cyclopenta-2,4-dienylideneketene (3), a highly unstable reactive intermediate, are reported. The ketene was prepared, under matrix isolation conditions at 4.2 or 10 K, by laser photocarbonylation of 1,2-didehydrobenzene (1) photogenerated earlier from phthalic anhydride (2). FTIR polarization measurements performed on partially photooriented samples of 3 immobilized in solid neon or argon provide infrared transition moment directions for most of the observed vibrations. Experimental results confirm that the ketene is bent, as predicted by ab initio calculations. Utilizing two isotopically modified 3, 3b and 3c, on the basis of the infrared absorption spectrum alone, we have analyzed and assigned its vibrations in a way, which leaves no doubt about the bent ketene structure. This work was motivated by a long standing confusion surrounding the assignments of the vibrations in 1,2-didehydrobenzene (1), especially of its "triple" bond stretch.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
Colorado Sch Mines, Dept Chem Engn & Petr Refining, Golden, CO 80401 USA.
Vanderbilt Univ, Dept Chem, Nashville, TN 37235 USA.
Roskilde Univ, Dept Life Sci & Chem, DK-4000 Roskilde, Denmark.
RP Radziszewski, JG (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
NR 21
TC 3
Z9 3
U1 1
U2 3
PU INST ORGANIC CHEM AND BIOCHEM
PI PRAGUE 6
PA ACAD SCI CZECH REPUBLIC, FLEMINGOVO NAM 2, PRAGUE 6, CZECH REPUBLIC 166
10
SN 0010-0765
J9 COLLECT CZECH CHEM C
JI Collect. Czech. Chem. Commun.
PD AUG
PY 1998
VL 63
IS 8
BP 1094
EP 1106
DI 10.1135/cccc19981094
PG 13
WC Chemistry, Multidisciplinary
SC Chemistry
GA 121AN
UT WOS:000075990100003
ER
PT J
AU Broadwell, JE
Lutz, AE
AF Broadwell, JE
Lutz, AE
TI A turbulent jet chemical reaction model: NOx production in jet flames
SO COMBUSTION AND FLAME
LA English
DT Article
ID DIFFUSION FLAMES; NONPREMIXED FLAMES; NITROGEN EMISSIONS; MIXING LAYERS;
TEMPERATURE; DYNAMICS; OXIDES
AB The Two-Stage Lagrangian turbulent jet reaction model is described, and results presented for NOx emissions from methane, CO-H-2, and hydrogen jet flames for a variety of conditions. The model includes complete chemical reaction mechanisms and treats the effects of buoyancy and radiation, the influences of which are shown to be significant. Non-equilibrium chemistry influences are also examined. The extensive comparisons made between the model and experimental results for the three fuels suggest that the model incorporates the essential processes that control NOx production in fuel jet flames. (C) 1998 by The Combustion Institute.
C1 Sandia Natl Labs, Livermore, CA 94551 USA.
RP Broadwell, JE (reprint author), 8 Muirfield Rd, Half Moon Bay, CA 94019 USA.
NR 41
TC 44
Z9 44
U1 1
U2 4
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD AUG-SEP
PY 1998
VL 114
IS 3-4
BP 319
EP 335
DI 10.1016/S0010-2180(97)00333-7
PG 17
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA ZP679
UT WOS:000073777600004
ER
PT J
AU Chou, CP
Chen, JY
Yam, CG
Marx, KD
AF Chou, CP
Chen, JY
Yam, CG
Marx, KD
TI Numerical modeling of NO formation in laminar Bunsen flames - A flamelet
approach
SO COMBUSTION AND FLAME
LA English
DT Article
ID PREMIXED TURBULENT COMBUSTION; JET DIFFUSION FLAMES; EMISSION; NUMBER;
FLOW
AB Based on the flamelet concept, a numerical model has been developed for fast predictions of NOx and CO emissions from laminar flames. The model is applied to studying NO formation in the secondary nonpremixed flame zone of fuel-rich methane Bunsen flames. By solving the steady-state flamelet equations with the detailed GRI2.1 methane-air mechanism, a flamelet library is generated containing thermochemical information for a range of scalar dissipation rates at the ambient pressure condition. Modeling of NO formation is made by solving its conservation equation with chemical source term evaluated based on flamelet library using the extended Zeldovich mechanism and "NO reburning reactions." The optically-thin radiation heat transfer model is used to explore the potential effect of heat loss on thermal NO formation. The numerical scheme solves the two-dimensional Navier-Stokes equations as well as three additional equations: the mixture fraction, the NO mass fraction, and the enthalpy deficit due to radiative heat loss. With an established flamelet library, typical computing times are about 5 hours per calculation on a DEC-3000 300LX workstation. The predicted mixing field, radial temperature profiles, and NO distributions compare favorably with recent experimental data obtained by Nguyen et al. [2]. The dependence of NOx emission on equivalence ratio is studied numerically and the predictions are found to agree reasonably well with the measurements by Muss [3]. The computed results show a decreasing trend of NOx emission with the equivalence ratio but an increasing trend in the CO emission index. By examining this trade-off between NOx and CO, an optimal equivalence ratio of 1.4 is found to yield the lowest combined emission. (C) 1998 by The Combustion Institute.
C1 Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA.
RP Chen, JY (reprint author), Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
NR 24
TC 25
Z9 26
U1 0
U2 4
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD AUG-SEP
PY 1998
VL 114
IS 3-4
BP 420
EP 435
DI 10.1016/S0010-2180(97)00317-9
PG 16
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA ZP679
UT WOS:000073777600011
ER
PT J
AU Ward, MJ
Son, SF
Brewster, MQ
AF Ward, MJ
Son, SF
Brewster, MQ
TI Steady deflagration of HMX with simple kinetics: A gas phase chain
reaction model
SO COMBUSTION AND FLAME
LA English
DT Article
ID COMBUSTION; MECHANISM
AB A new approach is presented for modeling steady combustion of energetic solids, in particular HMX. A simplified, global, gas phase chain reaction kinetic mechanism is employed. Specifically, a zero-order, high activation energy thermal decomposition initiation reaction in the condensed phase followed by a second-order, low activation energy chain reaction in the gas phase is assumed. A closed-form solution is obtained, which is based on the activation energy asymptotics analysis of Lengelle in the condensed phase and the assumption of zero activation energy in the gas phase. Comparisons between the model and a variety of experimental observations over a wide range of pressures and initial temperatures are presented and demonstrate the validity of the approach. The model provides excellent agreement with burning rate data (including sensitivity to pressure and initial temperature) and temperature profile data (in particular the gas phase). This suggests that in the realm of simplified, approximate kinetics modeling of energetic solids, the low gas phase activation energy limit is a more appropriate model than the classical high activation energy limit or heuristic flame sheer models. The model also indicates that the condensed phase reaction zone plays an important role in determining the deflagration rate of HMX, underscoring the need for better understanding of the chemistry in this zone. (C) 1998 by The Combustion Institute.
C1 Univ Illinois, Dept Mech & Ind Engn, Urbana, IL 61801 USA.
RP Son, SF (reprint author), Los Alamos Natl Lab, MS C920, Los Alamos, NM 87545 USA.
OI Son, Steven/0000-0001-7498-2922
NR 31
TC 58
Z9 61
U1 0
U2 4
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD AUG-SEP
PY 1998
VL 114
IS 3-4
BP 556
EP 568
DI 10.1016/S0010-2180(97)00332-5
PG 13
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA ZP679
UT WOS:000073777600020
ER
PT J
AU Johnson, MR
Kostiuk, LW
Cheng, RK
AF Johnson, MR
Kostiuk, LW
Cheng, RK
TI A ring stabilizer for lean premixed turbulent flames
SO COMBUSTION AND FLAME
LA English
DT Article
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Energy & Environm, Combust Grp, Berkeley, CA 94720 USA.
Univ Alberta, Dept Mech Engn, Combust & Environm Grp, Edmonton, AB T6G 2G8, Canada.
RP Cheng, RK (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Energy & Environm, Combust Grp, Berkeley, CA 94720 USA.
RI Johnson, Matthew/F-2672-2010
OI Johnson, Matthew/0000-0002-3637-9919
NR 8
TC 5
Z9 7
U1 2
U2 5
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 USA
SN 0010-2180
J9 COMBUST FLAME
JI Combust. Flame
PD AUG-SEP
PY 1998
VL 114
IS 3-4
BP 594
EP 596
DI 10.1016/S0010-2180(97)00353-2
PG 3
WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary;
Engineering, Chemical; Engineering, Mechanical
SC Thermodynamics; Energy & Fuels; Engineering
GA ZP679
UT WOS:000073777600025
ER
PT J
AU Gauldie, RW
Romanek, CR
AF Gauldie, RW
Romanek, CR
TI Orange roughy otolith growth rates: a direct experimental test of the
Romanek-Gauldie otolith growth model
SO COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE
PHYSIOLOGY
LA English
DT Article
DE otolith; Hoplostethus atlanticus; endolymph; microincrement; growth; age
ID HOPLOSTETHUS-ATLANTICUS; AGE-DETERMINATION; ENDOLYMPH
AB Endolymph chemistry (Ca2+, pH, Na+) was measured in 17 orange roughy (Hoplostethus atlanticus; Teleostei; Trachichthyidae). Theoretical daily microincrement widths based on the Romanek and Gauldie model of otolith growth were calculated from the measure of otolith chemistry. Theoretical daily microincrement widths were well-correlated (r(2) = 59%) with the width of the last daily microincrement growing at the posterior edge of otoliths taken from the sampled fish. (C) 1998 Elsevier Science Inc. All rights reserved.
C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC USA.
RP Gauldie, RW (reprint author), 76 Inglis St, Seatoun Wellington, New Zealand.
NR 22
TC 12
Z9 14
U1 1
U2 3
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 USA
SN 1095-6433
J9 COMP BIOCHEM PHYS A
JI Comp. Biochem. Physiol. A-Mol. Integr. Physiol.
PD AUG
PY 1998
VL 120
IS 4
BP 649
EP 653
DI 10.1016/S1095-6433(98)10082-X
PG 5
WC Biochemistry & Molecular Biology; Physiology; Zoology
SC Biochemistry & Molecular Biology; Physiology; Zoology
GA 127GE
UT WOS:000076341900011
ER
PT J
AU Attaway, SW
Hendrickson, BA
Plimpton, SJ
Gardner, DR
Vaughan, CT
Brown, KH
Heinstein, MW
AF Attaway, SW
Hendrickson, BA
Plimpton, SJ
Gardner, DR
Vaughan, CT
Brown, KH
Heinstein, MW
TI A parallel contact detection algorithm for transient solid dynamics
simulations using PRONTO3D
SO COMPUTATIONAL MECHANICS
LA English
DT Article
ID IMPACT
AB An efficient, scalable, parallel algorithm for treating material surface contacts in solid mechanics finite element programs has been implemented in a modular way for multiple-instruction, multiple-data (MIMD) parallel computers. The serial contact detection algorithm that was developed previously for the transient dynamics finite element code PRONTO3D has been extended for use in parallel computation by utilizing a dynamic (adaptive) load balancing algorithm. This approach is scalable to thousands of computational nodes(1).
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Attaway, SW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 30
TC 24
Z9 28
U1 0
U2 4
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0178-7675
J9 COMPUT MECH
JI Comput. Mech.
PD AUG
PY 1998
VL 22
IS 2
BP 143
EP 159
DI 10.1007/s004660050348
PG 17
WC Mathematics, Interdisciplinary Applications; Mechanics
SC Mathematics; Mechanics
GA 119VE
UT WOS:000075918000003
ER
PT J
AU Gray, LJ
Maroudas, D
Enmark, MN
AF Gray, LJ
Maroudas, D
Enmark, MN
TI Galerkin boundary integral method for evaluating surface derivatives
SO COMPUTATIONAL MECHANICS
LA English
DT Article
ID ELASTIC STRESS-ANALYSIS; HYPERSINGULAR INTEGRALS; ELEMENT METHOD;
ELECTROMIGRATION; COMPUTATION; EQUATION; DYNAMICS; CRACK
AB A Galerkin boundary integral procedure for evaluating the complete derivative, e.g., potential gradient or stress tensor, is presented. The expressions for these boundary derivatives involve hypersingular kernels, and the advantage of the Galerkin approach is that the integrals exist when a continuous surface interpolation is employed. As a consequence, nodal derivative values, at smooth surface points or at corners, can be obtained directly. This method is applied to the problem of electromigration-driven void dynamics in thin film aluminum interconnects. In this application, the tangential component of the electric field on the boundary is required to compute the flux of atoms at the void surface.
C1 Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA.
RP Gray, LJ (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
NR 35
TC 36
Z9 36
U1 3
U2 4
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0178-7675
J9 COMPUT MECH
JI Comput. Mech.
PD AUG
PY 1998
VL 22
IS 2
BP 187
EP 193
DI 10.1007/s004660050352
PG 7
WC Mathematics, Interdisciplinary Applications; Mechanics
SC Mathematics; Mechanics
GA 119VE
UT WOS:000075918000007
ER
PT J
AU Tabbara, MR
Stone, CM
AF Tabbara, MR
Stone, CM
TI A computational method for quasi-static fracture
SO COMPUTATIONAL MECHANICS
LA English
DT Article
ID DOMAIN INTEGRAL METHOD; FREE GALERKIN METHODS; EDGE CRACKING;
PARAMETERS; PLATES; TIP
AB A direct method for solving quasi-static, mixed-mode fracture problems is presented. The element-free Galerkin method is used in order to allow for crack growth without remeshing. An expression for the normalized, critical traction is derived in terms of the fracture resistance (R-curve) and a crack-dependent function. Sample problems demonstrate the capability of this method to accurately compute the post-peak equilibrium paths for structures with growing cracks.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Tabbara, MR (reprint author), Sandia Natl Labs, POB 5800,Mail Stop 0437, Albuquerque, NM 87185 USA.
NR 20
TC 12
Z9 14
U1 1
U2 1
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0178-7675
J9 COMPUT MECH
JI Comput. Mech.
PD AUG
PY 1998
VL 22
IS 2
BP 203
EP 210
DI 10.1007/s004660050354
PG 8
WC Mathematics, Interdisciplinary Applications; Mechanics
SC Mathematics; Mechanics
GA 119VE
UT WOS:000075918000009
ER
PT J
AU Tuzun, RE
Burkhardt, P
Secrest, D
AF Tuzun, RE
Burkhardt, P
Secrest, D
TI Accurate computation of individual and tables of 3-j and 6-j symbols
SO COMPUTER PHYSICS COMMUNICATIONS
LA English
DT Article
DE Wigner 3-j and 6-j symbols; vector coupling coefficients; quantum theory
of angular momentum; Clebsch-Gordan coefficients; Racah coefficients
ID COEFFICIENTS; SETS
AB By rewriting the formulas for 3-j and 6-j symbols in terms of several possible alternating binomial sums, it is possible to calculate these quantities quickly and accurately, often exactly, using floating point operations. The binomial sums can be calculated by direct summation or by recursion. A simple method for uniquely parameterizing the well-known Regge symmetries of the 3-j and 6-j symbols makes it possible to systematize the choice of the smallest magnitude binomial sum (which enhances the accuracy of floating point calculations and speeds up exact calculations using large integer routines). Formulas for special cases of the 3-j symbols enable the construction of recursion sequences which are often substantially faster than direct summation, especially for very large angular momentum arguments. For both 3-j and 6-j symbols, recursion offers several advantages over direct summation in exact calculations and for calculating tables. (C) 1998 Published by Elsevier Science B.V.
C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA.
Univ Illinois, Dept Chem, Urbana, IL 61801 USA.
RP Tuzun, RE (reprint author), Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA.
NR 32
TC 10
Z9 10
U1 0
U2 2
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 AUG
PY 1998
VL 112
IS 2-3
BP 112
EP 148
DI 10.1016/S0010-4655(98)00065-4
PG 37
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 115WK
UT WOS:000075689200002
ER
PT J
AU Hinton, TG
Gessaman, JA
Nagle, RD
Congdon, JD
AF Hinton, TG
Gessaman, JA
Nagle, RD
Congdon, JD
TI An evaluation of whole body potassium-40 content for estimating lean and
fat mass in pigeons
SO CONDOR
LA English
DT Article
DE body composition; Columba livia; lean mass; lipids; pigeon; potassium-40
measurement
AB A severe limitation in studies of avian ecological energetics is the lack of an accurate, noninvasive technique for determining whole body fat storage in living birds. We explored a technique of assaying total body potassium as a predictor of lean mass (LM) and then derived fat mass (FM) by subtracting LM from total body mass. Body potassium (K), present in lean tissue but not in fat, was estimated noninvasively from naturally-occurring radioactive K-40, which Occurs as a fixed ratio to total body K. We assayed 29 pigeon (Columba livia) carcasses for K-40 and then measured LM from body composition analyses in which fat mass was extracted using petroleum ether. The K-40 results were regressed against LM using five different combinations of independent variables. Regression equations were tested by comparing predicted LM (and FM predictions by subtraction from body mass) to measured LM values obtained from a separate group of pigeons. Whole body assay of K-40 was not a useful predictor of LM in pigeons (r(2) = 0.51; mean absolute error was 14 +/- 7%). Absolute errors increased with FM predictions (96 +/- 50%). Adding body mass as an independent variable increased the r(2) to 0.97, but body mass alone explained 96% of the variability in LM.
C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
Utah State Univ, Dept Biol, Logan, UT 84322 USA.
Utah State Univ, Ctr Ecol, Logan, UT 84322 USA.
RP Hinton, TG (reprint author), Univ Georgia, Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA.
EM hinton@srel.edu
NR 13
TC 1
Z9 1
U1 1
U2 2
PU COOPER ORNITHOLOGICAL SOC
PI LAWRENCE
PA ORNITHOLOGICAL SOC NORTH AMER PO BOX 1897, LAWRENCE, KS 66044-8897 USA
SN 0010-5422
J9 CONDOR
JI Condor
PD AUG
PY 1998
VL 100
IS 3
BP 579
EP 582
DI 10.2307/1369730
PG 4
WC Ornithology
SC Zoology
GA 109EH
UT WOS:000075307900024
ER
PT J
AU Kohn, MJ
Valley, JW
AF Kohn, MJ
Valley, JW
TI Obtaining equilibrium oxygen isotope fractionations from rocks: theory
and examples
SO CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
LA English
DT Article
ID P-T PATHS; FAST GRAIN-BOUNDARY; TIERRA-DEL-FUEGO; SW TAUERN WINDOW;
METAMORPHIC ROCKS; SOUTHEASTERN VERMONT; STABLE-ISOTOPE; NEW-HAMPSHIRE;
REGIONAL METAMORPHISM; GRENVILLE PROVINCE
AB A generalized approach for retrieving equilibrium isotope fractionations from natural rocks is proposed in which models of prograde reaction histories and retrograde diffusional exchange are used to identify coexisting minerals with similar isotope closure temperatures. Examples using literature data and new analyses from 32 natural amphibolite-facies schists demonstrate both the feasibility and limitations of obtaining equilibrium oxygen isotope fractionations from minerals in natural rocks. By screening samples according to the theoretical models, natural data are shown to have highly consistent mineral fractionations (+/- 2 sigma reproducibilities of +/- 0.16 to 0.54 parts per thousand) that within uncertainty reproduce experimental determinations among the minerals quartz, biotite, muscovite, and calcic amphibole. This correspondence indicates that the proposed theoretically-based selection criteria improve the likelihood of measuring equilibrium fractionations. The new data further corroborate the expected progressive enrichment of delta(18)O in the orthosilicates with increasing Al + Si relative to Fe + Mg: Delta(Ky-Grt) similar to 1.05 parts per thousand, Delta(St-Grt) similar to 0.6%,, and Delta(St-Cld) similar to 0.3 parts per thousand, at 525-575 degrees C. In contrast, typical samples that fail to satisfy screening criteria exhibit fractionations involving quartz, biotite, and amphibole that are strongly disequilibrium because of exchange during cooling. Theoretical screening of samples prior to isotope analysis allows robust, independent assessment of theoretical and experimental determinations of equilibrium isotope fractionations.
C1 Univ Wisconsin, Dept Geol & Geophys, Madison, WI 53706 USA.
RP Kohn, MJ (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RI Valley, John/B-3466-2011; Kohn, Matthew/A-2562-2012
OI Valley, John/0000-0003-3530-2722;
NR 87
TC 28
Z9 29
U1 1
U2 13
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0010-7999
J9 CONTRIB MINERAL PETR
JI Contrib. Mineral. Petrol.
PD AUG
PY 1998
VL 132
IS 3
BP 209
EP 224
DI 10.1007/s004100050418
PG 16
WC Geochemistry & Geophysics; Mineralogy
SC Geochemistry & Geophysics; Mineralogy
GA 119VF
UT WOS:000075918200001
ER
PT J
AU Mansfeld, F
AF Mansfeld, F
TI Discussion: A correlation between salt spray and electrochemical
impedance spectroscopy test results for conversion-coated aluminum
alloys
SO CORROSION
LA English
DT Editorial Material
DE accelerated testing; aluminum alloys; conversion coatings; corrosion
resistance; electrochemical impedance spectroscopy; salt spray testing;
test methods
ID SURFACE MODIFICATION
C1 Univ So Calif, Dept Mat Sci & Engn, Corros & Environm Effects Lab, Los Angeles, CA 90089 USA.
Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA.
Rockwell Int Sci Ctr, Thousand Oaks, CA 91360 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Mansfeld, F (reprint author), Univ So Calif, Dept Mat Sci & Engn, Corros & Environm Effects Lab, Los Angeles, CA 90089 USA.
NR 5
TC 1
Z9 1
U1 0
U2 1
PU NATL ASSN CORROSION ENG
PI HOUSTON
PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 USA
SN 0010-9312
J9 CORROSION
JI Corrosion
PD AUG
PY 1998
VL 54
IS 8
BP 595
EP 596
PG 2
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 107FP
UT WOS:000075196800001
ER
PT J
AU Boopathy, R
Gurgas, M
Ullian, J
Manning, JF
AF Boopathy, R
Gurgas, M
Ullian, J
Manning, JF
TI Metabolism of explosive compounds by sulfate-reducing bacteria
SO CURRENT MICROBIOLOGY
LA English
DT Article
ID SP B-STRAIN; NITROAROMATIC COMPOUNDS; MICROBIAL TRANSFORMATION;
PHANEROCHAETE-CHRYSOSPORIUM; NITROGEN-SOURCE; 2,4,6-TRINITROTOLUENE; TNT
AB The metabolism of various explosive compounds-1,3,5-trinitrobenzene (TNB), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetraazocine (HMX)-by a sulfate-reducing bacterial consortium, Desulfovibrio spp., was studied. The results indicated that the Desulfovibrio spp. used all of the explosive compounds studied as their sole source of nitrogen for growth. The concentrations of TNB, RDX, and HMX in the culture media dropped to below the detection limit (<0.5 ppm) within 18 days of incubation. We also observed the production of ammonia from the nitro groups of the explosive compounds in the culture media. This ammonia served as a nitrogen source for the bacterial growth, and the concentration of ammonia later dropped to <0.5 mg/L. The sulfate-reducing bacteria may be useful in the anaerobic treatment of explosives-contaminated soil.
C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA.
Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL USA.
RP Boopathy, R (reprint author), Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA.
NR 21
TC 65
Z9 67
U1 0
U2 5
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 0343-8651
J9 CURR MICROBIOL
JI Curr. Microbiol.
PD AUG
PY 1998
VL 37
IS 2
BP 127
EP 131
DI 10.1007/s002849900350
PG 5
WC Microbiology
SC Microbiology
GA 100VQ
UT WOS:000074836400009
PM 9662613
ER
PT J
AU Crofts, AR
Berry, EA
AF Crofts, AR
Berry, EA
TI Structure and function of the cytochrome bc(1) complex of mitochondria
and photosynthetic bacteria
SO CURRENT OPINION IN STRUCTURAL BIOLOGY
LA English
DT Article
ID IRON-SULFUR PROTEIN; RHODOBACTER-SPHAEROIDES; ELECTRON-TRANSFER;
RHODOPSEUDOMONAS-SPHAEROIDES; CRYSTAL-STRUCTURE; C OXIDOREDUCTASE;
OXIDATION SITE; SUBUNIT-IV; Q(O) SITE; UBIHYDROQUINONE
AB Progress has recently been made in the understanding of the function of the cytochrome bc(1) complex and related proteins in the context of recent structural information. The structures support many features that were predicted from sequence analysis and biophysical studies, but contain some surprises. Most dramatically, it is apparent that the iron-sulfur protein can take up different positions in different crystals, suggesting a novel mechanism for electron transfer through domain movement. Evidence from studies of mutant strains, in which the function of the sites or the binding of inhibitors is perturbed, has provided clues about the mechanism.
C1 Univ Illinois, Ctr Biophys & Computat Biol, Urbana, IL 61801 USA.
Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Calvin Lab, Berkeley, CA 94720 USA.
RP Crofts, AR (reprint author), Univ Illinois, Ctr Biophys & Computat Biol, 388 Morrill Hall,505 S Goodwin, Urbana, IL 61801 USA.
EM a-crofts@uiuc.edu; EABerry@lbl.gov
FU NIDDK NIH HHS [DK44842]; NIGMS NIH HHS [GM35438]
NR 44
TC 84
Z9 86
U1 0
U2 5
PU CURRENT BIOLOGY LTD
PI LONDON
PA 34-42 CLEVELAND STREET, LONDON W1P 6LB, ENGLAND
SN 0959-440X
J9 CURR OPIN STRUC BIOL
JI Curr. Opin. Struct. Biol.
PD AUG
PY 1998
VL 8
IS 4
BP 501
EP 509
DI 10.1016/S0959-440X(98)80129-2
PG 9
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 112QF
UT WOS:000075505000014
PM 9729743
ER
PT J
AU Menon, PM
Clausing, RE
Heatherly, L
Feigerle, CS
AF Menon, PM
Clausing, RE
Heatherly, L
Feigerle, CS
TI The morphology of diamond grown by hot filament chemical vapor
deposition
SO DIAMOND AND RELATED MATERIALS
LA English
DT Article
DE chemical vapor deposition; hot-filament CVD; crystal morphology; diamond
film growth
ID CVD DIAMOND; FILMS; MECHANISMS; MODEL
AB The effect on the growth morphology of changing methane concentration and substrate temperature has been studied in a hot filament chemical vapor deposition reactor. Methane concentration and substrate temperatures were varied from 0.5 to 1.5% and 536 to 1140 degrees C, respectively. The morphology produced has been quantified as the ratio of the rate of growth in the [100] and [111] crystallographic directions, and the dependence of this ratio on growth parameters has been used to produce a morphology map for the hot filament system. The morphology map generated shows trends similar to those observed for microwave plasma depositions. In addition, the apparent growth rates in the [100] and [111] crystallographic directions have been determined in the region of 1 < alpha < 3. The growth rate in the [100] direction exhibits a sharp drop at temperatures where the crystal geometry is changing from octahedral to cube-octahedral, whereas the growth rate in the [111] direction exhibits a more gradual change with temperature. These effects are attributed to the temperature dependence of surface diffusion. (C) 1998 Elsevier Science S.A.
C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Feigerle, CS (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
NR 16
TC 9
Z9 9
U1 0
U2 6
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-9635
J9 DIAM RELAT MATER
JI Diam. Relat. Mat.
PD AUG
PY 1998
VL 7
IS 8
BP 1201
EP 1206
DI 10.1016/S0925-9635(98)00178-2
PG 6
WC Materials Science, Multidisciplinary
SC Materials Science
GA 106ME
UT WOS:000075132700018
ER
PT J
AU Dingley, KH
Freeman, SPHT
Nelson, DO
Garner, RC
Turteltaub, KW
AF Dingley, KH
Freeman, SPHT
Nelson, DO
Garner, RC
Turteltaub, KW
TI Covalent binding of 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline to
albumin and hemoglobin at environmentally relevant doses - Comparison of
human subjects and F344 rats
SO DRUG METABOLISM AND DISPOSITION
LA English
DT Article
ID ACCELERATOR MASS-SPECTROMETRY; HETEROCYCLIC AMINES; MOLECULAR DOSIMETRY;
MUTAGENIC COMPOUND; PROTEIN ADDUCTS; COOKED FOODS; DNA; CARCINOGENS;
EXPOSURE; CANCER
AB Covalent binding of the food-borne heterocyclic amine 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) to albumin and hemoglobin (Hb), 3.5-6.0 hr after oral administration of a single dose of either 21.3 or 228.0 mu g of [C-14]MeIQx (304 and 3257 ng/kg of body weight, respectively, based on a 70-kg subject weight), was studied in human volunteers using accelerator mass spectrometry. Human protein adduct levels were compared with data obtained for male F344 rats 4.5 hr after oral administration of 0.94-11,420 ng/kg of body weight [C-14]MeIQx. Dose-dependent levels of MeIQx-albumin and MeIQx-Hb adducts were detected in both humans and rats. In each case, the regression coefficient (slope) of the dose-response curve was approximately 1. The highest levels of adduct formation per unit dose of MeIQx occurred with human albumin, followed by rat albumin, human Hb, and rat Hb (in that order). Although the human subjects were elderly and underwent colon resection surgery during the study period, the results indicate that formation of albumin and Hb adducts is dose dependent and that a trend exists for higher adduct levels per unit dose in humans, compared with F344 rats. Furthermore, MeIQx-albumin adducts are likely to provide a more sensitive marker of exposure to MeIQx than are MeIQx-Hb adducts.
C1 Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94551 USA.
Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA.
Univ York, Jack Birch Unit Environm Carcinogenesis, York YO1 5DD, N Yorkshire, England.
RP Dingley, KH (reprint author), Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, POB 808,L-452, Livermore, CA 94551 USA.
RI Freeman, Stewart/C-3290-2012
OI Freeman, Stewart/0000-0001-6148-3171
FU NCI NIH HHS [CA55861]
NR 27
TC 36
Z9 36
U1 0
U2 2
PU AMER SOC PHARMACOLOGY EXPERIMENTAL THERAPEUTICS
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA
SN 0090-9556
J9 DRUG METAB DISPOS
JI Drug Metab. Dispos.
PD AUG
PY 1998
VL 26
IS 8
BP 825
EP 828
PG 4
WC Pharmacology & Pharmacy
SC Pharmacology & Pharmacy
GA 109XG
UT WOS:000075349200016
PM 9698300
ER
PT J
AU Jagoe, CH
Dallas, CE
Chesser, RK
Smith, MH
Lingenfelser, SK
Lingenfelser, JT
Holloman, K
Lomakin, M
AF Jagoe, CH
Dallas, CE
Chesser, RK
Smith, MH
Lingenfelser, SK
Lingenfelser, JT
Holloman, K
Lomakin, M
TI Contamination near Chernobyl: radiocaesium, lead and mercury in fish and
sediment radiocaesium from waters within the 10 km zone
SO ECOTOXICOLOGY
LA English
DT Article
DE radiocaesium; mercury; lead; fish; Chernobyl
ID SWEDISH LAKES; RADIOCESIUM; CS-137; RUSSIA; DNA
AB Samples of fish and sediments collected from waters within 10 km of the Chernobyl Nuclear Po,ver Plant were analysed for radiocaesium and other atmospherically transported pollutants (lead (Pb) and mercury (Hg)) were measured in fish tissues. For comparison, fish muscle was also sampled from a less-contaminated area of the Kiev Reservoir and from a hatchery in Kiev. In sediments, Cs-137 was the major gamma-emitting isotope, with concentrations of over 100 Bq g(-1) in canals adjacent to the reactor and in ponds that were downwind during the accident. The radiocaesium distributions appeared non-normal, were very patchy and could vary by over 100% in samples collected metres to tens of metres apart. Fish muscle radiocaesium from ponds within 10 km of the power plant was in the range of 6-192 Bq g(-1) The fish muscle radiocaesium concentrations were highest in ponds from the downwind sites and were correlated with the sediment radiocaesium concentrations. The lead and mercury concentrations in fish were relatively low (medians <0.8 mu g Hg per g dry mass and <150 ng Pb per g dry mass), suggesting little contamination from lead applied to the burning reactor after the accident. The radiocaesium levels in fish in areas close to the reactor continue to be high enough to cause health concerns to humans that might utilize these resources.
C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
Univ Georgia, Coll Pharm, Dept Pharmacol & Toxicol, Athens, GA 30602 USA.
Univ Georgia, DB Warnell Sch Forest Resources, Athens, GA 30602 USA.
Int Res & Dev Agcy, UA-252001 Kiev, Ukraine.
RP Jagoe, CH (reprint author), Univ Georgia, Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA.
NR 38
TC 4
Z9 4
U1 1
U2 5
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0963-9292
J9 ECOTOXICOLOGY
JI Ecotoxicology
PD AUG
PY 1998
VL 7
IS 4
BP 201
EP 209
DI 10.1023/A:1008934710904
PG 9
WC Ecology; Environmental Sciences; Toxicology
SC Environmental Sciences & Ecology; Toxicology
GA 119YW
UT WOS:000075927300003
ER
PT J
AU Dallas, CE
Lingenfelser, SF
Lingenfelser, JT
Holloman, K
Jagoe, CH
Kind, JA
Chesser, RK
Smith, MH
AF Dallas, CE
Lingenfelser, SF
Lingenfelser, JT
Holloman, K
Jagoe, CH
Kind, JA
Chesser, RK
Smith, MH
TI Flow cytometric analysis of erythrocyte and leukocyte DNA in fish from
Chernobyl-contaminated ponds in the Ukraine
SO ECOTOXICOLOGY
LA English
DT Article
DE genotoxicity; Chernobyl; fish; flow cytometry; coefficient of variation
ID CELL-CYCLE PROGRESSION; CHROMOSOME-ABERRATIONS; ATAXIA-TELANGIECTASIA;
HUMAN-LYMPHOCYTES; RADIATION; DAMAGE; DELAY; EXPOSURE; POPULATIONS;
IRRADIATION
AB Flow cytometric (FCM) analysis was used to assess the potential impact of chronic radionuclide exposure in fish populations inhabiting contaminated sites in the vicinity of the Chernobyl nuclear accident. Four species of fish, channel catfish (Ictalurus punctatus), crucian carp (Carassius carassius), carp (Cyprinus carpio) and tench (Tinca tinca), were collected within a 10 km radius of the Chernobyl Nuclear Power Plant and compared with 'control' populations from two uncontaminated locations far removed from the plant, Assays of whole blood, as well as separate erythrocyte and leukocyte components, revealed aneuploid-like patterns in the DNA histograms of some fish, as well as widened G(0)/G(1) peaks. None of the fish collected from the uncontaminated sites demonstrated these kinds of changes in their DNA histograms. Increases in the coefficient of variation (CV) of the G(0)/G(1) peak, indicating abnormal DNA distributions, were observed in several of the fish from Chernobyl relative to the control populations. Cell cycle perturbation in fish from the contaminated sites was also detected, with a higher percentage of cells in G(2)/M phase relative to the controls. Leukocytes proved more sensitive than erythrocytes, as they displayed a larger number of abnormal DNA histograms. Variations in the cellular DNA content similar to those reported here have been shown for other vertebrate species exposed to radiation and other genotoxic agents in laboratory and field settings.
C1 Univ Georgia, Coll Pharm, Dept Pharmaceut & Biomed Sci, Athens, GA 30602 USA.
US Fish & Wildlife Serv, White Marsh, VA 23183 USA.
Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29082 USA.
Univ Georgia, Dept Genet, Athens, GA 30602 USA.
Univ Georgia, Inst Ecol, Athens, GA 30602 USA.
Univ Georgia, Sch Forest Resources, Athens, GA 30602 USA.
RP Dallas, CE (reprint author), Univ Georgia, Coll Pharm, Dept Pharmaceut & Biomed Sci, Athens, GA 30602 USA.
NR 46
TC 11
Z9 12
U1 4
U2 11
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0963-9292
J9 ECOTOXICOLOGY
JI Ecotoxicology
PD AUG
PY 1998
VL 7
IS 4
BP 211
EP 219
DI 10.1023/A:1008986727743
PG 9
WC Ecology; Environmental Sciences; Toxicology
SC Environmental Sciences & Ecology; Toxicology
GA 119YW
UT WOS:000075927300004
ER
PT J
AU Leahy, RM
Mosher, JC
Spencer, ME
Huang, MX
Lewine, JD
AF Leahy, RM
Mosher, JC
Spencer, ME
Huang, MX
Lewine, JD
TI A study of dipole localization accuracy for MEG and EEC using a human
skull phantom
SO ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
LA English
DT Article
DE magnetoencephalography (MEG); electroencephalography (EEG); dipole
localization; phantom; boundary element methods; locally fitted spheres
AB Objective: To investigate the accuracy of forward and inverse techniques for EEG and MEG dipole localization.
Design and Methods: A human skull phantom was constructed with brain, skull and scalp layers and realistic relative conductivities. Thirty two independent current dipoles were distributed within the 'brain' region and EEG and MEG data collected separately for each dipole. The true dipole locations and orientations and the morphology of the brain, skull and scalp layers were extracted from X-ray CT data. The location of each dipole was estimated from the EEG and MEG data using the R-MUSIC inverse method and forward models based on spherical and realistic head geometries. Additional computer simulations were performed to investigate the factors affecting localization accuracy.
Results: Localization errors using the relatively simpler locally fitted sphere approach are only slightly greater than those using a BEM approach. The average localization error over the 32 dipoles was 7-8 mm for EEG and 3 mm for MEG,
Conclusion: The superior performance of MEG over EEG appears to be because the latter is more sensitive to errors in the forward model arising from simplifying assumptions concerning the conductivity of the skull, scalp and brain. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.
C1 Univ So Calif, Inst Signal & Image Proc, Los Angeles, CA 90089 USA.
Los Alamos Natl Lab, Biophys Grp, Los Alamos, NM 87545 USA.
Signal Proc Solut Inc, Redondo Beach, CA 90277 USA.
Univ New Mexico, Dept Radiol, Albuquerque, NM 87131 USA.
Univ Utah, Dept Radiol, Salt Lake City, UT 84132 USA.
RP Leahy, RM (reprint author), Univ So Calif, Inst Signal & Image Proc, Los Angeles, CA 90089 USA.
EM leahy@sipi.usc.edu
FU NIMH NIH HHS [R01-MH53213]
NR 22
TC 191
Z9 193
U1 4
U2 18
PU ELSEVIER IRELAND LTD
PI CLARE
PA ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000,
IRELAND
SN 0013-4694
J9 ELECTROEN CLIN NEURO
JI Electroencephalogr. Clin. Neurophysiol.
PD AUG
PY 1998
VL 107
IS 2
BP 159
EP 173
DI 10.1016/S0013-4694(98)00057-1
PG 15
WC Engineering, Biomedical; Clinical Neurology
SC Engineering; Neurosciences & Neurology
GA 117BU
UT WOS:000075760900010
PM 9751287
ER
PT J
AU Rosenfeld, AH
Akbari, H
Romm, JJ
Pomerantz, M
AF Rosenfeld, AH
Akbari, H
Romm, JJ
Pomerantz, M
TI Cool communities: strategies for heat island mitigation and smog
reduction
SO ENERGY AND BUILDINGS
LA English
DT Article
DE heat islands; cool communities; savings; implementation; policy; smog;
ozone; incentives; cool roofs; pavements; trees; energy; utilities; air
conditioning; residential buildings; commercial buildings; south coast
USA; simulation
ID EMISSION RATES
AB Adopting our 'cool communities' strategies of reroofing and repaving in lighter colors and planting shade trees can effect substantial energy savings, directly and indirectly. In our target city of Los Angeles, annual residential air-conditioning (A/C) bills can be reduced directly by about US$100 M and, because these strategies serve to cool the air in the Los Angeles basin and reduce smog exceedance levels by about 10%, an additional savings of US$70 M in indirect cooling and US$360 M in smog-reduction benefits-a total savings of about US$1/2 B per year-is possible. Trees are most effective if they shade buildings, but the savings are significant even if they merely cool the air by evapotranspiration. In Los Angeles, avoided peak power for air conditioning can reach about 1.5 GW (more than 15% of the city's air conditioning). Generalized to the entire US, we estimate that 25 CW can be avoided with potential annual benefits of about US$5 B by the year 2015. Recent steps taken by cities in the warm half of US towards adoption of cool communities include (1) incorporation of cool roofs in the revised ASHRAE building standards S90.1 and (2) inclusion of cool surfaces and shade trees as tradeable smog-offset credits in Los Angeles. Other step underway include (1) plans by the US Environmental Protection Agency (EPA) to approve heat island mitigation measures in the state implementation plan to comply with ozone standards and (2) plans for ratings and labeling of cool surfaces. (C) 1998 Elsevier Science S.A. All rights reserved.
C1 US DOE, Washington, DC USA.
RP Rosenfeld, AH (reprint author), US DOE, EE-40,1000 Independence Ave SW, Washington, DC USA.
EM arthur.rosenfeld@hq.doe.gov; h_akbari@lbl.gov; joseph.romm@hq.doe.gov;
m_pomerantz@lbl.gov
NR 29
TC 188
Z9 194
U1 4
U2 38
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0378-7788
J9 ENERG BUILDINGS
JI Energy Build.
PD AUG
PY 1998
VL 28
IS 1
BP 51
EP 62
DI 10.1016/S0378-7788(97)00063-7
PG 12
WC Construction & Building Technology; Energy & Fuels; Engineering, Civil
SC Construction & Building Technology; Energy & Fuels; Engineering
GA 105ZR
UT WOS:000075105700006
ER
PT J
AU Kriese, MD
Boismier, DA
Moody, NR
Gerberich, WW
AF Kriese, MD
Boismier, DA
Moody, NR
Gerberich, WW
TI Nanomechanical fracture-testing of thin films
SO ENGINEERING FRACTURE MECHANICS
LA English
DT Article; Proceedings Paper
CT Special Session on Nanomechanics and Nanofracture, at the 9th
International Conference on Fracture
CY APR 01-05, 1997
CL SYDNEY, AUSTRALIA
DE interfacial fracture; indentation; scratch testing; nanomechanics; thin
films
ID BIMATERIAL INTERFACES; MICROWEDGE INDENTATION; FINE LINE; ADHESION;
MECHANICS; CRACK; DELAMINATION; RESISTANCE; TOUGHNESS; MICROSCRATCH
AB Nanochemical testing techniques were used to quantitatively assess the adhesion of thin film-substrate systems. These techniques utilized micron-scale diamond tips with instrumentation continuously measuring to sub-nanometer and sub-millinewton resolutions. Delamination was modeled as an interfacial crack propagation problem, utilizing linear elastic fracture mechanics and characterized by the critical strain energy release rate. A 9.1 mu m thick phenol-formaldehyde polymer film on stainless steel was tested with indentation, scratching and edge-loading of fine lines. Also, sputtered copper and tungsten-copper bilayer films on SiO2, 150 to 1500 nm thick, were tested with indentation. (C) 1998 Elsevier Science Ltd. All rights reserved.
C1 Univ Minnesota, Ctr Interfacial Engn, Minneapolis, MN 55455 USA.
Hutchinson Technol Inc, Hutchinson, MN USA.
Sandia Natl Labs, Livermore, CA USA.
RP Gerberich, WW (reprint author), Univ Minnesota, Ctr Interfacial Engn, Minneapolis, MN 55455 USA.
NR 53
TC 45
Z9 45
U1 2
U2 16
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-7944
J9 ENG FRACT MECH
JI Eng. Fract. Mech.
PD AUG
PY 1998
VL 61
IS 1
BP 1
EP 20
DI 10.1016/S0013-7944(98)00050-2
PG 20
WC Mechanics
SC Mechanics
GA 147LY
UT WOS:000077570300002
ER
PT J
AU Moody, NR
Medlin, D
Boehme, D
Norwood, DP
AF Moody, NR
Medlin, D
Boehme, D
Norwood, DP
TI Film thickness effects on the fracture of tantalum nitride on aluminum
nitride thin film systems
SO ENGINEERING FRACTURE MECHANICS
LA English
DT Article; Proceedings Paper
CT Special Session on Nanomechanics and Nanofracture, at the 9th
International Conference on Fracture
CY APR 01-05, 1997
CL SYDNEY, AUSTRALIA
DE nanoindentation; nanoscratch fracture; tantalum nitride films; aluminum
nitride substrates
ID METAL-FILMS; ADHESION; MICROSCRATCH; INDENTATION; STRESS; DELAMINATION;
RESISTANCE; MECHANICS; AL2O3; LOAD
AB In this study, nanoindentation and nanoscratch testing were combined with transmission electron microscopy to establish the relationship between structure, properties, and fracture resistance of thin tantalum nitride resistor films on aluminum nitride substrates. The films were sputter-deposited to thicknesses of 160, 440, and 500 nm. Nanoindentation was used to determine mechanical properties while nanoscratch tests were used to measure interfacial fracture energies. These tests showed that the measured elastic moduli of all films were independent of indenter depth and approximately equal to the value measured for the aluminum nitride substrates, They also showed that measured hardness values increased with film thickness. More importantly, the fracture energies measured in indentation fracture and nanoscratch tests were essentially equal and independent of film thickness. These results showed that tantalum nitride films and aluminum nitride substrates behaved in an inherently brittle manner. They further showed that fracture was localized along the interface suggesting that adhesion was controlled by the nature of bonding across the interface plane. (C) 1998 Elsevier Science Ltd. All rights reserved.
C1 Sandia Natl Labs, Livermore, CA 94551 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Moody, NR (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
NR 31
TC 21
Z9 21
U1 1
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-7944
J9 ENG FRACT MECH
JI Eng. Fract. Mech.
PD AUG
PY 1998
VL 61
IS 1
BP 107
EP 118
DI 10.1016/S0013-7944(98)00055-1
PG 12
WC Mechanics
SC Mechanics
GA 147LY
UT WOS:000077570300008
ER
PT J
AU Zhou, SJ
Lomdahl, PS
Voter, AF
Holian, BL
AF Zhou, SJ
Lomdahl, PS
Voter, AF
Holian, BL
TI Three-dimensional fracture via large-scale molecular dynamics
SO ENGINEERING FRACTURE MECHANICS
LA English
DT Article; Proceedings Paper
CT Special Session on Nanomechanics and Nanofracture, at the 9th
International Conference on Fracture
CY APR 01-05, 1997
CL SYDNEY, AUSTRALIA
DE atomistic simulation; three-dimensional crack; dislocation emission;
ductility; embedded atom method
ID EMBEDDED-ATOM METHOD; CRACK TIPS; DISLOCATION EMISSION; NUCLEATION;
DUCTILE; BRITTLE; SIMULATIONS; CONTINUUM; CLEAVAGE; CRYSTALS
AB A series of massively parallel molecular dynamics simulations with up to 35 million atoms is performed to investigate dislocation emission from a three-dimensional crack. We observe dislocation loops emitted from the crack front, both in the bulk and near the free surfaces. The sequence of dislocation emission in the process of crack blunting strongly depends on the crystallographic orientation of the crack front and differs strikingly from anything previously conjectured. This finding is essential to establish a precise dislocation emission criterion (i.e: intrinsic ductility criterion). We also find that boundary conditions and interatomic force laws have a significant effect on jogging or blunting dislocation emission modes. (C) 1998 Elsevier Science Ltd. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Zhou, SJ (reprint author), Univ Calif Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, POB 1663, Los Alamos, NM 87545 USA.
NR 38
TC 30
Z9 33
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0013-7944
J9 ENG FRACT MECH
JI Eng. Fract. Mech.
PD AUG
PY 1998
VL 61
IS 1
BP 173
EP 187
DI 10.1016/S0013-7944(98)00053-8
PG 15
WC Mechanics
SC Mechanics
GA 147LY
UT WOS:000077570300012
ER
PT J
AU McCloskey, JT
Schultz, IR
Newman, MC
AF McCloskey, JT
Schultz, IR
Newman, MC
TI Estimating the oral bioavailability of methylmercury to channel catfish
(Ictalurus punctatus)
SO ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
LA English
DT Article
DE oral bioavailability; methylmercury; channel catfish; elimination;
uptake
ID TROUT SALMO-GAIRDNERI; RAINBOW-TROUT; MERCURY; PHARMACOKINETICS; TISSUE;
SALAR; WATER
AB In classical pharmacology, oral bioavailability of a toxicant is defined as that fraction of an orally administered dose reaching the systemic circulation of the animal. The present study estimates the bioavailability of methylmercury in channel catfish (Ictalurus punctatus) by comparing concentrations in the blood through time after oral and intra-arterial (IA) administration. Catfish were cannulated in the dorsal aorta and gavaged a pelleted feed that had been spiked with methylmercury. Each catfish was gavaged an increasing amount of spiked feed. Following oral dosing, serial blood samples were removed for more than 1,500 h. One month after removal of the last blood sample, the same fish were injected IA with methylmercury and serial blood samples were removed for more than 3,000 h. The area under the curve of the blood concentration-time curve extrapolated to infinity (AUC(0-->x)) was calculated from fish dosed orally and IA using both noncompartmental (trapezoidal) and compartmental methods. Bioavailability was estimated as the ratio of the dose-corrected oral AUC(0-->x) to the IA AUC(0-->x). Average bioavailability estimates from this approach were 33% using noncompartmental (range 14-55%) and 29% using compartmental (range 12-42%) methods and were correlated with the amount of food gavaged to the fish (r(2) = 0.95, p = 0.026). Bioavailability estimates using the present methods were much lower than estimates using more conventional methods (i.e., assimilation efficiency estimates using mass balance), suggesting that conventional methods may overestimate the true bioavailability of toxicants in fish.
C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
Battelle PNNL, Mol Biosci, Richland, WA 99352 USA.
Virginia Inst Marine Sci, Coll William & Mary, Gloucester Point, VA 23062 USA.
RP McCloskey, JT (reprint author), US Fish & Wildlife Serv, POB 99, Gloucester, VA 23061 USA.
NR 27
TC 13
Z9 16
U1 1
U2 6
PU SETAC PRESS
PI PENSACOLA
PA 1010 NORTH 12TH AVE, PENSACOLA, FL 32501-3370 USA
SN 0730-7268
J9 ENVIRON TOXICOL CHEM
JI Environ. Toxicol. Chem.
PD AUG
PY 1998
VL 17
IS 8
BP 1524
EP 1529
DI 10.1897/1551-5028(1998)017<1524:ETOBOM>2.3.CO;2
PG 6
WC Environmental Sciences; Toxicology
SC Environmental Sciences & Ecology; Toxicology
GA 106LK
UT WOS:000075130900012
ER
PT J
AU Martin, EA
White, INH
Turteltau, KW
Smith, LL
AF Martin, EA
White, INH
Turteltau, KW
Smith, LL
TI Identification of tamoxifen-DNA adducts
SO EUROPEAN JOURNAL OF CANCER
LA English
DT Article
ID WOMEN
AB We have developed a high performance liquid chromatography (HPLC) technique which separates tamoxifen-DNA adducts in rat liver into 12 peaks. Our results suggest that alpha-hydroxylation is the major route of activation in rat Liver, whereas 4-hydroxylation represents a minor pathway. In humans, adducts are absent or at low levels making detection a problem. Using HPLC, no tamoxifen adducts have been detected in human uterus and to improve sensitivity we are using [C-14]tamoxifen and accelerator mass spectrometry to detect adducts. Before surgery, patients take a capsule containing [C-14]tamoxifen and the DNA in excised tissues is analysed for [C-14], to assess the irreversible binding. (C) 1998 Elsevier Science Ltd; All rights reserved.
C1 MRC, Toxicol Unit, Leicester, Leics, England.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Martin, EA (reprint author), MRC, Toxicol Unit, Leicester, Leics, England.
NR 5
TC 1
Z9 2
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0959-8049
J9 EUR J CANCER
JI Eur. J. Cancer
PD AUG
PY 1998
VL 34
SU 4
BP S65
EP S66
DI 10.1016/S0959-8049(98)00122-1
PG 2
WC Oncology
SC Oncology
GA 132KF
UT WOS:000076628300039
ER
PT J
AU Gueneau, P
Morel, F
Laroche, J
Erdner, D
AF Gueneau, P
Morel, F
Laroche, J
Erdner, D
TI The petF region of the chloroplast genome from the diatom Thalassiosira
weissflogii: sequence, organization and phylogeny
SO EUROPEAN JOURNAL OF PHYCOLOGY
LA English
DT Article
DE ferredoxin; Odontella sinensis; origin of plastids; Thalassiosira
weissflogii
ID ODONTELLA-SINENSIS; MESSENGER-RNA; EVOLUTION; ORIGIN; ALGA;
PHYTOPLANKTON; PLASTIDS
AB We report the cloning and characterization of a 1881 bp Thalassiosira weissflogii (Bacillariophyceae, Centrales) plastid genomic fragment containing the ferredoxin gene (petF) and several other genes. The organization of this fragment is exactly the same as its equivalent region from the plastid genome of another centric diatom, Odontella sinensis, and the sequences share high homology in both coding and non-coding regions. Traces of a probable vestigial protein-coding gene and of a partial trn gene are found just after the trnR gene in both diatoms as well as in the plastid genome of the red alga Porphyra purpurea, illustrating the close relationship between red algal and heterokont algal plastid genomes and arguing in favour of the origin of the latter by secondary endosymbiosis. In accordance with phylogenetic analyses of most plastid genes, phylogenetic trees inferred from 69 ferredoxin sequences show that both the green and the red algal plastid genes arose from cyanobacterial genes; our results furthermore suggest that each of these plastid lineages is related to different extant cyanobacterial genes, implying either that different endosymbiotic events were responsible for the origin of green and red plastids or that each lineage kept only one (and a different one) of several paralogous cyanobacterial genes present in the ancestral cyanobacterial genome.
C1 Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA.
Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA.
Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
RP Gueneau, P (reprint author), MATEX, 22 Rue Marechal Juin, F-30130 Pont St Esprit, France.
RI Erdner, Deana/C-4981-2008; LaRoche, Julie/A-1109-2010
OI Erdner, Deana/0000-0002-1736-8835;
NR 24
TC 6
Z9 9
U1 1
U2 3
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 USA
SN 0967-0262
J9 EUR J PHYCOL
JI Eur. J. Phycol.
PD AUG
PY 1998
VL 33
IS 3
BP 203
EP 211
DI 10.1017/S096702629800170X
PG 9
WC Plant Sciences; Marine & Freshwater Biology
SC Plant Sciences; Marine & Freshwater Biology
GA 128DY
UT WOS:000076391000002
ER
PT J
AU Appelshauser, H
Bachler, J
Bailey, SJ
Barnby, LS
Bartke, J
Barton, RA
Bialkowska, H
Blyth, CO
Bock, R
Bormann, C
Brady, FP
Brockmann, R
Buncic, N
Buncic, P
Caines, HL
Cebra, D
Chan, P
Cooper, GE
Cramer, JG
Cramer, PB
Csato, P
Dunn, J
Eckardt, V
Eckhardt, F
Ferguson, MI
Fischer, HG
Flierl, D
Fodor, Z
Foka, P
Freund, P
Friese, V
Fuchs, M
Gabler, F
Gal, J
Gazdzicki, M
Gladysz, E
Gorodetsky, P
Grebieszkow, J
Gunther, J
Harris, JW
Hegyi, S
Henkel, T
Hill, LA
Huang, I
Hummler, H
Igo, G
Irmscher, D
Jacobs, P
Jones, PG
Kadija, K
Kolesnikov, VI
Kowalski, M
Lasiuk, B
Levai, P
Malakhov, AI
Margetis, S
Markert, C
Melkumov, GL
Mock, A
Molnar, J
Nelson, JM
Odyniec, G
Palla, G
Panagiotou, AD
Petridis, A
Piper, A
Porter, RJ
Poskanzer, AM
Poziombka, S
Prindle, DJ
Puhlhofer, F
Rauch, W
Reid, JG
Renfordt, R
Retyk, W
Ritter, HG
Rohrich, D
Roland, C
Roland, G
Rudolph, H
Rybicki, A
Sakrejda, I
Sandoval, A
Sann, H
Semenov, AY
Schafer, E
Schmischke, D
Schmitz, N
Schonfelder, S
Seyboth, P
Seyerlein, J
Sikler, F
Skrzypczak, E
Squier, GTA
Stock, R
Strobele, H
Szentpetery, I
Sziklai, J
Toy, M
Trainor, TA
Trentalange, S
Ullrich, T
Vassiliou, M
Vesztergombi, G
Vranic, D
Wang, F
Weerasundara, DD
Wenig, S
White, S
Whitten, C
Wienold, T
Wood, L
Yates, TA
Zimanyi, J
Zhu, XZ
Zybert, R
AF Appelshauser, H
Bachler, J
Bailey, SJ
Barnby, LS
Bartke, J
Barton, RA
Bialkowska, H
Blyth, CO
Bock, R
Bormann, C
Brady, FP
Brockmann, R
Buncic, N
Buncic, P
Caines, HL
Cebra, D
Chan, P
Cooper, GE
Cramer, JG
Cramer, PB
Csato, P
Dunn, J
Eckardt, V
Eckhardt, F
Ferguson, MI
Fischer, HG
Flierl, D
Fodor, Z
Foka, P
Freund, P
Friese, V
Fuchs, M
Gabler, F
Gal, J
Gazdzicki, M
Gladysz, E
Gorodetsky, P
Grebieszkow, J
Gunther, J
Harris, JW
Hegyi, S
Henkel, T
Hill, LA
Huang, I
Hummler, H
Igo, G
Irmscher, D
Jacobs, P
Jones, PG
Kadija, K
Kolesnikov, VI
Kowalski, M
Lasiuk, B
Levai, P
Malakhov, AI
Margetis, S
Markert, C
Melkumov, GL
Mock, A
Molnar, J
Nelson, JM
Odyniec, G
Palla, G
Panagiotou, AD
Petridis, A
Piper, A
Porter, RJ
Poskanzer, AM
Poziombka, S
Prindle, DJ
Puhlhofer, F
Rauch, W
Reid, JG
Renfordt, R
Retyk, W
Ritter, HG
Rohrich, D
Roland, C
Roland, G
Rudolph, H
Rybicki, A
Sakrejda, I
Sandoval, A
Sann, H
Semenov, AY
Schafer, E
Schmischke, D
Schmitz, N
Schonfelder, S
Seyboth, P
Seyerlein, J
Sikler, F
Skrzypczak, E
Squier, GTA
Stock, R
Strobele, H
Szentpetery, I
Sziklai, J
Toy, M
Trainor, TA
Trentalange, S
Ullrich, T
Vassiliou, M
Vesztergombi, G
Vranic, D
Wang, F
Weerasundara, DD
Wenig, S
White, S
Whitten, C
Wienold, T
Wood, L
Yates, TA
Zimanyi, J
Zhu, XZ
Zybert, R
CA NA49 Collaboration
TI Spectator nucleons in Pb+Pb collisions at 158 A center dot GeV
SO EUROPEAN PHYSICAL JOURNAL A
LA English
DT Article
ID TARGET FRAGMENTATION; ULTRARELATIVISTIC ENERGIES; MULTIFRAGMENTATION
AB The composition of forward-going projectile spectator matter in fixed-target Pb+Pb collisions at 158 A.GeV at the CERN SPS has been studied as a function of centrality. The data were measured with the NA49 veto calorimeter. We observe that forward-going spectator matter in central collisions consists of 9 neutrons, 7 protons, and half a deuteron on average. At large impact parameters most spectator nucleons are bound in fragments. The relative resolution of the average impact parameter derived from the measurement of spectator neutrons is roughly 19% in the range from zero to half maximum impact parameters.
C1 Univ Athens, Dept Phys, Athens, Greece.
Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Univ Birmingham, Birmingham, W Midlands, England.
KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary.
CERN, Geneva, Switzerland.
Inst Nucl Phys, Krakow, Poland.
Gesell Schwerionenforsch GmbH, Darmstadt, Germany.
Univ Calif Davis, Davis, CA USA.
Joint Inst Nucl Res, Dubna, Russia.
Univ Frankfurt, Fachbereich Phys, D-6000 Frankfurt, Germany.
Univ Calif Los Angeles, Los Angeles, CA USA.
Univ Marburg, Fachbereich Phys, D-3550 Marburg, Germany.
Max Planck Inst Phys, D-80805 Munich, Germany.
Inst Nucl Studies, PL-00681 Warsaw, Poland.
Univ Warsaw, Inst Expt Phys, Warsaw, Poland.
Univ Washington, Nucl Phys Lab, Seattle, WA 98195 USA.
Yale Univ, New Haven, CT USA.
Rudjer Boskovic Inst, Zagreb, Croatia.
RP Appelshauser, H (reprint author), Univ Athens, Dept Phys, Athens, Greece.
RI Barnby, Lee/G-2135-2010; Levai, Peter/A-1544-2014
OI Barnby, Lee/0000-0001-7357-9904;
NR 18
TC 25
Z9 25
U1 0
U2 5
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 1434-6001
J9 EUR PHYS J A
JI Eur. Phys. J. A
PD AUG
PY 1998
VL 2
IS 4
BP 383
EP 390
DI 10.1007/s100500050135
PG 8
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 120CL
UT WOS:000075937000011
ER
PT J
AU Breitweg, J
Derrick, M
Krakauer, D
Magill, S
Mikunas, T
Musgrave, B
Repond, J
Stanek, R
Talaga, RL
Yoshida, R
Zhang, H
Mattingly, MCK
Anselmo, F
Antonioli, P
Bari, G
Basile, M
Bellagamba, L
Boscherini, D
Bruni, A
Bruni, G
Romeo, GC
Castellini, G
Cifarelli, L
Cindolo, F
Contin, A
Coppola, N
Corradi, M
De Pasquale, S
Giusti, P
Iacobucci, G
Laurenti, G
Levi, G
Margotti, A
Massam, T
Nania, R
Palmonari, F
Pesci, A
Polini, A
Satorelli, G
Garcia, YZ
Zichichi, A
Amelung, C
Bornheim, A
Brock, I
Coboken, E
Crittenden, J
Deffner, R
Eckert, M
Grothe, M
Hartmann, H
Heinloth, K
Heinz, L
Hilger, E
Jakob, HP
Kappes, A
Katz, UF
Kerger, R
Paul, E
Pfeiffer, M
Stamm, J
Wieber, H
Bailey, DS
Campbell-Robson, S
Cottingham, WN
Foster, B
Hall-Wilton, R
Heath, GP
Heath, HF
McFall, JD
Piccioni, D
Roff, DG
Tapper, RJ
Ayad, R
Capua, M
Iannotti, L
Schioppa, M
Susinno, G
Kim, JY
Lee, JH
Lim, LT
Pac, MY
Caldwell, A
Cartiglia, N
Jing, Z
Liu, W
Mellado, B
Parsons, JA
Ritz, J
Sampson, S
Sciulli, F
Straub, PB
Zhu, Q
Borzemski, P
Chwastowski, J
Eskreys, A
Figiel, J
Klimek, K
Przybycien, MB
Zamiejski, L
Adamczyk, L
Bedaarek, B
Bukowy, M
Czermak, AM
Jelen, K
Kisielewska, D
Kowalski, T
Przybycien, M
Rulikowska-Zarebska, E
Suszycki, L
Zajac, J
Dulinski, Z
Kotanskii, A
Abbiendi, G
Bauerdick, LAT
Behrens, U
Beier, H
Bienlein, JK
Desler, K
Drews, G
Fricke, U
Gialas, I
Goebel, F
Gottlicher, P
Graciani, R
Haas, T
Hain, W
Hasell, D
Hebbel, E
Johnson, KF
Kasemann, M
Koch, W
Kotz, U
Kowalski, H
Lindemann, L
Lohr, B
Milewski, J
Milite, M
Monteiro, T
Ng, JST
Notz, D
Park, IH
Pellegrino, A
Pelucchi, F
Piotrzkowski, K
Rohde, M
Roldan, J
Ryan, JJ
Savin, AA
Schneekloth, U
Schwarzer, O
Selonke, F
Stonjek, S
Surrow, B
Tassi, E
Westphal, D
Wolf, G
Wollmer, U
Youngman, C
Zeuner, W
Burow, BD
Coldewey, C
Grabosch, HJ
Meyer, A
Schlenstedt, S
Barbagli, G
Gallo, E
Pelfer, P
Maccarrone, G
Votano, L
Bamberger, A
Eisenhardt, S
Markun, P
Raach, H
Trefzger, T
Wolfle, S
Bromley, JT
Brook, NH
Bussey, PJ
Doyle, AT
Macdonald, N
Saxon, DH
Sinclair, LE
Skillicorn, IO
Strickland, E
Waugh, R
Bohnet, I
Gendner, N
Holm, U
Meyer-Larsen, A
Salehi, H
Wick, K
Garfagnini, A
Gladilin, LK
Horstmann, D
Kcira, D
Klanner, R
Lohrmann, E
Poelz, G
Schott, W
Zetsche, F
Bacon, TC
Butterworth, I
Cole, JE
Howell, G
Lamberti, L
Long, KR
Miller, DB
Pavel, N
Prinias, A
Sedgbeer, JK
Sideris, D
Walker, R
Mallik, T
Wang, SM
Wu, JT
Cloth, P
Filges, D
Fleck, JI
Ishii, T
Kuze, M
Suzuki, I
Tokushuku, K
Yamada, S
Yaqmauchi, K
Yamazaki, Y
Hong, SJ
Lee, SB
Nam, SW
Park, SK
Barreiro, F
Fernandez, JP
Garcia, G
Glasman, C
Hernandez, JM
Hervas, L
Labarga, L
Martinez, M
del Peso, J
Puga, J
Terron, J
de Troconiz, JF
Corriveau, F
Hanna, DS
Hartmaan, J
Hung, LW
Murray, WN
Ochs, A
Riveline, M
Stairs, DG
St-Laurent, M
Ullmann, R
Tsurugai, T
Bashkirov, V
Dolgoshein, BA
Stifutkin, A
Bashindzhagyan, GL
Ermolov, PF
Golubkov, YA
Khein, LA
Korotkova, NA
Korzhavina, IA
Kuzmin, VA
Lukina, OY
Proskuryakov, AS
Shcheglova, LM
Solomin, AN
Zotkin, SA
Bokel, C
Botje, M
Brummer, N
Engelen, J
Koffeman, E
Kooijman, P
van Sighem, A
Tiecke, E
Tuning, N
Verkerke, W
Vossebeld, J
Wiggers, L
de Wolf, E
Acosta, D
Bylsma, B
Durkin, LS
Gilmore, J
Ginsburg, CM
Kim, CL
Ling, TY
Nylander, P
Romanowski, TA
Blaikley, HE
Cashmore, RJ
Cooper-Sarkar, AM
Devenish, RCE
Edmonds, JK
Grosse-Knetter, J
Harnew, N
Nath, C
Noyes, VA
Quadt, A
Ruske, O
Tickner, JR
Walczak, R
Waters, DS
Bertolin, A
Brugnera, R
Carlin, R
Dal Corso, F
Dosselli, U
Limentani, S
Morandin, M
Posocco, M
Stanco, L
Stroili, R
Voci, C
Bulmahn, J
Oh, BY
Okrasinski, JR
Toothacker, WS
Whitmore, JJ
D'Agostini, G
Marini, G
Nigro, A
Raso, M
Hart, JC
McCubbin, NA
Shah, TP
Epperson, D
Heusch, C
Rahn, JT
Sadrozinski, HFW
Seiden, A
Wichmann, R
Williams, DC
Abramowicz, H
Briskin, G
Dagan, S
Kananov, S
Levy, A
Abe, T
Fusayasu, T
Inuzuka, M
Nagano, K
Umemori, K
Yamashita, T
Hamatsu, R
Hirose, T
Homma, K
Kitamura, S
Matsushita, T
Arneodo, T
Cirio, R
Costa, M
Ferrero, MI
Maselli, S
Monaco, V
Peroni, C
Petrucci, TC
Ruspa, M
Sacchi, R
Solano, A
Staiano, A
Dardo, M
Bailey, DC
Fagerstroem, CP
Galea, R
Hartner, GF
Joe, KK
Levman, GM
Martin, JF
Orr, RS
Polenz, S
Sabetfakhri, A
Simmons, D
Teuscher, RJ
Butterworth, JM
Catterall, CD
Hayes, ME
Jones, TW
Lane, JB
Saunders, RL
Sutton, MR
Wing, M
Ciborowski, J
Grzelak, G
Kasprzak, M
Nowak, RJ
Pawlak, JM
Paylak, R
Tymieniecka, T
Wroblewski, AK
Zakrzewski, JA
Zarnecki, AF
Adamus, M
Deppe, O
Eisenberg, Y
Hochman, D
Karshon, U
Badgett, WF
Chapin, D
Cross, R
Dasu, S
Foudas, C
Loveless, RJ
Mattingly, S
Reeder, DD
Smith, WH
Vaiciulis, A
Wodarczyk, M
Deshpande, A
Dhawan, S
Hughes, VW
Bhadra, S
Frisken, WR
Khakzad, M
Schmidke, WB
AF Breitweg, J
Derrick, M
Krakauer, D
Magill, S
Mikunas, T
Musgrave, B
Repond, J
Stanek, R
Talaga, RL
Yoshida, R
Zhang, H
Mattingly, MCK
Anselmo, F
Antonioli, P
Bari, G
Basile, M
Bellagamba, L
Boscherini, D
Bruni, A
Bruni, G
Romeo, GC
Castellini, G
Cifarelli, L
Cindolo, F
Contin, A
Coppola, N
Corradi, M
De Pasquale, S
Giusti, P
Iacobucci, G
Laurenti, G
Levi, G
Margotti, A
Massam, T
Nania, R
Palmonari, F
Pesci, A
Polini, A
Satorelli, G
Garcia, YZ
Zichichi, A
Amelung, C
Bornheim, A
Brock, I
Coboken, E
Crittenden, J
Deffner, R
Eckert, M
Grothe, M
Hartmann, H
Heinloth, K
Heinz, L
Hilger, E
Jakob, HP
Kappes, A
Katz, UF
Kerger, R
Paul, E
Pfeiffer, M
Stamm, J
Wieber, H
Bailey, DS
Campbell-Robson, S
Cottingham, WN
Foster, B
Hall-Wilton, R
Heath, GP
Heath, HF
McFall, JD
Piccioni, D
Roff, DG
Tapper, RJ
Ayad, R
Capua, M
Iannotti, L
Schioppa, M
Susinno, G
Kim, JY
Lee, JH
Lim, LT
Pac, MY
Caldwell, A
Cartiglia, N
Jing, Z
Liu, W
Mellado, B
Parsons, JA
Ritz, J
Sampson, S
Sciulli, F
Straub, PB
Zhu, Q
Borzemski, P
Chwastowski, J
Eskreys, A
Figiel, J
Klimek, K
Przybycien, MB
Zamiejski, L
Adamczyk, L
Bedaarek, B
Bukowy, M
Czermak, AM
Jelen, K
Kisielewska, D
Kowalski, T
Przybycien, M
Rulikowska-Zarebska, E
Suszycki, L
Zajac, J
Dulinski, Z
Kotanskii, A
Abbiendi, G
Bauerdick, LAT
Behrens, U
Beier, H
Bienlein, JK
Desler, K
Drews, G
Fricke, U
Gialas, I
Goebel, F
Gottlicher, P
Graciani, R
Haas, T
Hain, W
Hasell, D
Hebbel, E
Johnson, KF
Kasemann, M
Koch, W
Kotz, U
Kowalski, H
Lindemann, L
Lohr, B
Milewski, J
Milite, M
Monteiro, T
Ng, JST
Notz, D
Park, IH
Pellegrino, A
Pelucchi, F
Piotrzkowski, K
Rohde, M
Roldan, J
Ryan, JJ
Savin, AA
Schneekloth, U
Schwarzer, O
Selonke, F
Stonjek, S
Surrow, B
Tassi, E
Westphal, D
Wolf, G
Wollmer, U
Youngman, C
Zeuner, W
Burow, BD
Coldewey, C
Grabosch, HJ
Meyer, A
Schlenstedt, S
Barbagli, G
Gallo, E
Pelfer, P
Maccarrone, G
Votano, L
Bamberger, A
Eisenhardt, S
Markun, P
Raach, H
Trefzger, T
Wolfle, S
Bromley, JT
Brook, NH
Bussey, PJ
Doyle, AT
Macdonald, N
Saxon, DH
Sinclair, LE
Skillicorn, IO
Strickland, E
Waugh, R
Bohnet, I
Gendner, N
Holm, U
Meyer-Larsen, A
Salehi, H
Wick, K
Garfagnini, A
Gladilin, LK
Horstmann, D
Kcira, D
Klanner, R
Lohrmann, E
Poelz, G
Schott, W
Zetsche, F
Bacon, TC
Butterworth, I
Cole, JE
Howell, G
Lamberti, L
Long, KR
Miller, DB
Pavel, N
Prinias, A
Sedgbeer, JK
Sideris, D
Walker, R
Mallik, T
Wang, SM
Wu, JT
Cloth, P
Filges, D
Fleck, JI
Ishii, T
Kuze, M
Suzuki, I
Tokushuku, K
Yamada, S
Yaqmauchi, K
Yamazaki, Y
Hong, SJ
Lee, SB
Nam, SW
Park, SK
Barreiro, F
Fernandez, JP
Garcia, G
Glasman, C
Hernandez, JM
Hervas, L
Labarga, L
Martinez, M
del Peso, J
Puga, J
Terron, J
de Troconiz, JF
Corriveau, F
Hanna, DS
Hartmaan, J
Hung, LW
Murray, WN
Ochs, A
Riveline, M
Stairs, DG
St-Laurent, M
Ullmann, R
Tsurugai, T
Bashkirov, V
Dolgoshein, BA
Stifutkin, A
Bashindzhagyan, GL
Ermolov, PF
Golubkov, YA
Khein, LA
Korotkova, NA
Korzhavina, IA
Kuzmin, VA
Lukina, OY
Proskuryakov, AS
Shcheglova, LM
Solomin, AN
Zotkin, SA
Bokel, C
Botje, M
Brummer, N
Engelen, J
Koffeman, E
Kooijman, P
van Sighem, A
Tiecke, E
Tuning, N
Verkerke, W
Vossebeld, J
Wiggers, L
de Wolf, E
Acosta, D
Bylsma, B
Durkin, LS
Gilmore, J
Ginsburg, CM
Kim, CL
Ling, TY
Nylander, P
Romanowski, TA
Blaikley, HE
Cashmore, RJ
Cooper-Sarkar, AM
Devenish, RCE
Edmonds, JK
Grosse-Knetter, J
Harnew, N
Nath, C
Noyes, VA
Quadt, A
Ruske, O
Tickner, JR
Walczak, R
Waters, DS
Bertolin, A
Brugnera, R
Carlin, R
Dal Corso, F
Dosselli, U
Limentani, S
Morandin, M
Posocco, M
Stanco, L
Stroili, R
Voci, C
Bulmahn, J
Oh, BY
Okrasinski, JR
Toothacker, WS
Whitmore, JJ
D'Agostini, G
Marini, G
Nigro, A
Raso, M
Hart, JC
McCubbin, NA
Shah, TP
Epperson, D
Heusch, C
Rahn, JT
Sadrozinski, HFW
Seiden, A
Wichmann, R
Williams, DC
Abramowicz, H
Briskin, G
Dagan, S
Kananov, S
Levy, A
Abe, T
Fusayasu, T
Inuzuka, M
Nagano, K
Umemori, K
Yamashita, T
Hamatsu, R
Hirose, T
Homma, K
Kitamura, S
Matsushita, T
Arneodo, T
Cirio, R
Costa, M
Ferrero, MI
Maselli, S
Monaco, V
Peroni, C
Petrucci, TC
Ruspa, M
Sacchi, R
Solano, A
Staiano, A
Dardo, M
Bailey, DC
Fagerstroem, CP
Galea, R
Hartner, GF
Joe, KK
Levman, GM
Martin, JF
Orr, RS
Polenz, S
Sabetfakhri, A
Simmons, D
Teuscher, RJ
Butterworth, JM
Catterall, CD
Hayes, ME
Jones, TW
Lane, JB
Saunders, RL
Sutton, MR
Wing, M
Ciborowski, J
Grzelak, G
Kasprzak, M
Nowak, RJ
Pawlak, JM
Paylak, R
Tymieniecka, T
Wroblewski, AK
Zakrzewski, JA
Zarnecki, AF
Adamus, M
Deppe, O
Eisenberg, Y
Hochman, D
Karshon, U
Badgett, WF
Chapin, D
Cross, R
Dasu, S
Foudas, C
Loveless, RJ
Mattingly, S
Reeder, DD
Smith, WH
Vaiciulis, A
Wodarczyk, M
Deshpande, A
Dhawan, S
Hughes, VW
Bhadra, S
Frisken, WR
Khakzad, M
Schmidke, WB
CA ZEUS Collaboration
TI Diffractive dijet cross sections in photoproduction at HERA
SO EUROPEAN PHYSICAL JOURNAL C
LA English
DT Article
ID DEEP-INELASTIC SCATTERING; LARGE RAPIDITY GAP; LUND MONTE-CARLO; POMERON
STRUCTURE; PARTON DISTRIBUTIONS; PERTURBATION-THEORY; FERMILAB TEVATRON;
JET FRAGMENTATION; HARD SCATTERING; E+E-PHYSICS
AB Differential dijet cross sections have been measured with the ZEUS detector for photoproduction events in which the hadronic final state containing the jets is separated with respect to the outgoing proton direction by a large rapidity gap. The cross section has been measured as a function of the fraction of the photon (x(gamma)(OBS)) and pomeron (beta(OBS)) momentum participating in the production of the dijet system. The observed x(gamma)(OBS) dependence shows evidence for the presence of a resolved- as well as a direct-photon component. The measured cross section d sigma/d beta(OBS) increases as beta(OBS) increases indicating that there is a sizeable contribution to dijet production from those events in which a large fraction of the pomeron momentum participates in the hard scattering. These cross sections and the ZEUS measurements of the diffractive structure function carl be described by calculations ba-sed on parton densities ill the pomeron which evolve according to the QCD evolution equations and include a substantial hard momentum component of gluons in the pomeron.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
Andrews Univ, Berrien Springs, MI 49104 USA.
Univ Bologna, Bologna, Italy.
Ist Nazl Fis Nucl, I-40126 Bologna, Italy.
Univ Bonn, Inst Phys, Bonn, Germany.
Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England.
Univ Calabria, Dept Phys, I-87036 Cosenza, Italy.
INFN, Cosenza, Italy.
Chonnam Natl Univ, Kwangju, South Korea.
Columbia Univ, Nevis Labs, Irvington, NY 10533 USA.
Inst Nucl Phys, Krakow, Poland.
Acad Min & Met, Fac Phys & Nucl Techniques, Krakow, Poland.
Jagiellonian Univ, Dept Phys, Krakow, Poland.
DESY, Deutsch Elektronen Synchrotron, Hamburg, Germany.
DESY, IfH Zeuthen, Zeuthen, Germany.
Univ Florence, Florence, Italy.
Ist Nazl Fis Nucl, I-50125 Florence, Italy.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Freiburg, Fak Phys, Freiburg, Germany.
Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland.
Univ Hamburg, Inst Exp Phys 1, Hamburg, Germany.
Univ Hamburg, Inst Expt Phys 2, Hamburg, Germany.
Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England.
Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
Forschungszentrum Julich, Julich, Germany.
Natl Lab High Energy Phys, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 305, Japan.
Korea Univ, Seoul 136701, South Korea.
Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain.
McGill Univ, Dept Phys, Quebec City, PQ, Canada.
Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan.
Moscow Engn Phys Inst, Moscow 115409, Russia.
Moscow MV Lomonosov State Univ, Inst Phys Nucl, Moscow, Russia.
NIKHEF H, NL-1009 DB Amsterdam, Netherlands.
Univ Amsterdam, Amsterdam, Netherlands.
Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
Univ Oxford, Dept Phys, Oxford, England.
Univ Padua, Dipartimento Fis, Padua, Italy.
Ist Nazl Fis Nucl, Padua, Italy.
Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
Polytech Univ, Sagamihara, Kanagawa, Japan.
Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
Ist Nazl Fis Nucl, Rome, Italy.
Rutherford Appleton Lab, Didcot, Oxon, England.
Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA.
Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Dept Phys, IL-69978 Tel Aviv, Israel.
Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan.
Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy.
Ist Nazl Fis Nucl, Turin, Italy.
Univ Turin, Fac Sci 2, Alessandria, Italy.
INFN, Alessandria, Italy.
Univ Toronto, Dept Phys, Toronto, ON, Canada.
UCL, Dept Phys & Astron, London, England.
Warsaw Univ, Inst Expt Phys, Warsaw, Poland.
Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel.
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
Yale Univ, Dept Phys, New Haven, CT 06520 USA.
York Univ, Dept Phys, N York, ON M3J 1P3, Canada.
RP Breitweg, J (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Solomin, Anatoly/C-3072-2016; Graciani Diaz, Ricardo/I-5152-2016; Capua,
Marcella/A-8549-2015; Gladilin, Leonid/B-5226-2011; Morandin,
Mauro/A-3308-2016; De Pasquale, Salvatore/B-9165-2008; Wing,
Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle,
Anthony/C-5889-2009; Golubkov, Yury/E-1643-2012; Proskuryakov,
Alexander/J-6166-2012; Katz, Uli/E-1925-2013; Wiggers, Leo/B-5218-2015;
Hernandez Calama, Jose Maria/H-9127-2015; Tassi, Enrico/K-3958-2015
OI Graciani Diaz, Ricardo/0000-0001-7166-5198; Castellini,
Guido/0000-0002-0177-0643; Kasemann, Matthias/0000-0002-0429-2448;
Capua, Marcella/0000-0002-2443-6525; Arneodo,
Michele/0000-0002-7790-7132; Abbiendi, Giovanni/0000-0003-4499-7562;
Gladilin, Leonid/0000-0001-9422-8636; Morandin,
Mauro/0000-0003-4708-4240; De Pasquale, Salvatore/0000-0001-9236-0748;
Doyle, Anthony/0000-0001-6322-6195; Katz, Uli/0000-0002-7063-4418;
Wiggers, Leo/0000-0003-1060-0520; Hernandez Calama, Jose
Maria/0000-0001-6436-7547;
NR 59
TC 40
Z9 40
U1 0
U2 3
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1434-6044
J9 EUR PHYS J C
JI Eur. Phys. J. C
PD AUG
PY 1998
VL 5
IS 1
BP 41
EP 56
DI 10.1007/s100520050246
PG 16
WC Physics, Particles & Fields
SC Physics
GA 114GW
UT WOS:000075601600003
ER
PT J
AU Acciarri, M
Adriani, O
Aguilar-Benitez, M
Ahlen, S
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Ambrosi, G
Anderhub, H
Andreev, VP
Angelescu, T
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Baksay, L
Ball, RC
Banerjee, S
Banerjee, S
Banicz, K
Barczyk, A
Barillere, R
Barone, L
Bartalini, P
Baschirotto, A
Basile, M
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Bhattacharya, S
Biasini, M
Biland, A
Bilei, GM
Bizzarri, R
Blaising, JJ
Blyth, SC
Bobbink, GJ
Bock, R
Bohm, A
Boldizsar, L
Borgia, B
Bourilkov, D
Bourquin, M
Boutigny, D
Braccini, S
Branson, JG
Brigljevic, V
Brock, IC
Buffini, A
Buijs, A
Burger, JD
Burger, WJ
Busenitz, J
Cai, XD
Campanelli, M
Capell, M
Romeo, GC
Carlino, G
Cartacci, AM
Casaus, J
Castellini, G
Cavallari, F
Cavallo, N
Cecchi, C
Cerrada, M
Cesaroni, F
Chamizo, M
Chang, YH
Chaturvedi, UK
Chekanov, SV
Chemarin, M
Chen, A
Chen, G
Chen, GM
Chen, HF
Chen, HS
Chen, M
Chiefari, G
Chien, CY
Cifarelli, L
Cindolo, F
Civinini, C
Clare, I
Clare, R
Cohn, HO
Coignet, G
Colijn, AP
Colino, N
Costantini, S
Cotorobai, F
de la Cruz, B
Csilling, A
Dai, TS
D'Alessandro, R
de Asmundis, R
Degre, A
Deiters, K
Denes, P
DeNotaristefani, F
DiBitonto, D
Diemoz, M
van Dierendonck, D
Di Lodovico, F
Dionisi, C
Dittmar, M
Dominguez, A
Doria, A
Dova, MT
Drago, E
Duchesneau, D
Duinker, P
Duran, I
Dutta, S
Easo, S
Efremenko, Y
El Mamouni, H
Engler, A
Eppling, FJ
Erne, FC
Ernenwein, JP
Extermann, P
Fabre, M
Faccini, R
Falciano, S
Favara, A
Fay, J
Fedin, O
Felcini, M
Fenyi, B
Ferguson, T
Ferroni, F
Fesefeldt, H
Fiandrini, E
Field, JH
Filthaut, F
Fisher, PH
Fisk, I
Forconi, G
Fredj, L
Freudenreich, K
Furetta, C
Galaktionov, T
Ganguli, SN
Garcia-Abia, P
Gau, SS
Gentile, S
Gerald, J
Gheordanescu, N
Giagu, S
Goldfarb, S
Goldstein, J
Gong, ZF
Gougas, A
Gratta, G
Gruenewald, MW
Gupta, VK
Gurtu, A
Gutay, LJ
Haas, D
Hartmann, B
Hasan, A
Hatzifotiadou, D
Hebbeker, T
Herve, A
Hirschfelder, J
van Hoek, WC
Hofer, H
Hoorani, H
Hou, SR
Hu, G
Innocente, V
Jenkes, K
Jin, BN
Jones, LW
de Jong, P
Josa-Mutuberria, I
Kasser, A
Khani, RA
Kamrad, D
Kamyshkov, Y
Kapustinsky, JS
Karyotakis, Y
Kaur, M
Kienzle-Focacci, MN
Kim, D
Kim, DH
Kim, JK
Kim, SC
Kinnison, WW
Kirkby, A
Kirkby, D
Kirkby, J
Kiss, D
Kittel, W
Klimentov, A
Konig, AC
Kopp, A
Korolko, I
Koutsenko, V
Kraemer, RW
Krenz, W
Kunin, A
Lacentre, P
de Guevara, PL
Landi, D
Lapoint, C
Lassila-Perini, K
Laurikainen, P
Lavorato, A
Lebeau, M
Lebedev, A
Lebrun, P
Lecomte, P
Lecoq, P
Le Coultre, P
Lee, HJ
Leggett, C
Le Goff, JM
Leiste, R
Leonardi, E
Levtchenko, P
Li, C
Lin, CH
Lin, WT
Linde, FL
Lista, L
Liu, ZA
Lohmann, W
Longo, E
Lu, W
Lu, YS
Lubelsmeyer, K
Luci, C
Luckey, D
Luminari, L
Lustermann, W
Ma, WG
Maity, M
Majumder, G
Malgeri, L
Malinin, A
Mana, C
Mangeol, D
Mangla, S
Marchesini, P
Marin, A
Martin, JP
Marzano, F
Massaro, GGG
McNally, D
Mele, S
Merola, L
Meschini, M
Metzger, WJ
von der Mey, M
Mi, Y
Migani, D
Mihul, A
van Mil, AJW
Milcent, H
Mirabelli, G
Mnich, J
Molnar, P
Monteleoni, B
Moore, R
Moulik, T
Mount, R
Muheim, F
Muijs, AJM
Nahn, S
Napolitano, M
Ness-Tedaldi, F
Newman, H
Niessen, T
Nippe, A
Nisati, A
Nowak, H
Oh, YD
Opitz, H
Organtini, G
Ostonen, R
Palit, S
Palomares, C
Pandoulas, D
Paoletti, S
Paolucci, P
Park, HK
Park, IH
Pascale, G
Passaleva, G
Patricelli, S
Paul, T
Pauluzzi, M
Paus, C
Pauss, F
Peach, D
Pei, YJ
Pensotti, S
Perret-Gallix, D
Petersen, B
Petrak, S
Pevsner, A
Piccolo, D
Pieri, M
Piroue, PA
Pistolesi, E
Plyaskin, V
Pohl, M
Pojidaev, V
Postema, H
Produit, N
Prokofiev, D
Quartieri, J
Rahal-Callot, G
Raja, N
Rancoita, PG
Rattaggi, M
Raven, G
Razis, P
Read, K
Ren, D
Rescigno, M
Reucroft, S
Riemann, S
Riles, K
Rind, O
Robohm, A
Rodin, J
Roe, BP
Romero, L
Rosier-Lees, S
Rosselet, P
van Rossum, W
Roth, S
Rubio, JA
Ruschmeier, D
Rykaczewski, H
Salicio, J
Sanchez, E
Sanders, MP
Sarakinos, ME
Sarkar, S
Sauvage, G
Schafer, C
Schegelsky, V
Schmidt-Kaerst, S
Schmitz, D
Schneegans, M
Scholz, N
Schopper, H
Schotanus, DJ
Schwenke, J
Schwering, G
Sciacca, C
Sciarrino, D
Servoli, L
Shevchenko, S
Shivarov, N
Shoutko, V
Shukla, J
Shumilov, E
Shvorob, A
Siedenburg, T
Son, D
Soulimov, V
Smith, B
Spillantini, P
Steuer, M
Stickland, DP
Stone, H
Stoyanov, B
Straessner, A
Sudhakar, K
Sultanov, G
Sun, LZ
Susinno, GF
Suter, H
Swain, JD
Tang, XW
Tauscher, L
Taylor, L
Ting, SCC
Ting, SM
Tonwar, SC
Toth, J
Tully, C
Tuchscherer, H
Tung, KL
Uchida, Y
Ulbricht, J
Uwer, U
Valente, E
Vesztergombi, G
Vetlitsky, I
Viertel, G
Vivargent, M
Vlachos, S
Volkert, R
Vogel, H
Vogt, H
Vorobiev, I
Vorobyov, AA
Vorvolakos, A
Wadhwa, M
Wallraff, W
Wang, JC
Wang, XL
Wang, ZM
Weber, A
Wu, SX
Wynhoff, S
Xu, J
Xu, ZZ
Yang, BZ
Yang, CG
Yao, XY
Ye, JB
Yeh, SC
You, JM
Zalite, A
Zalite, Y
Zemp, P
Zeng, Y
Zhang, Z
Zhang, ZP
Zhou, B
Zhou, Y
Zhu, GY
Zhu, RY
Zichichi, A
Ziegler, F
AF Acciarri, M
Adriani, O
Aguilar-Benitez, M
Ahlen, S
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Ambrosi, G
Anderhub, H
Andreev, VP
Angelescu, T
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Baksay, L
Ball, RC
Banerjee, S
Banerjee, S
Banicz, K
Barczyk, A
Barillere, R
Barone, L
Bartalini, P
Baschirotto, A
Basile, M
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Bhattacharya, S
Biasini, M
Biland, A
Bilei, GM
Bizzarri, R
Blaising, JJ
Blyth, SC
Bobbink, GJ
Bock, R
Bohm, A
Boldizsar, L
Borgia, B
Bourilkov, D
Bourquin, M
Boutigny, D
Braccini, S
Branson, JG
Brigljevic, V
Brock, IC
Buffini, A
Buijs, A
Burger, JD
Burger, WJ
Busenitz, J
Cai, XD
Campanelli, M
Capell, M
Romeo, GC
Carlino, G
Cartacci, AM
Casaus, J
Castellini, G
Cavallari, F
Cavallo, N
Cecchi, C
Cerrada, M
Cesaroni, F
Chamizo, M
Chang, YH
Chaturvedi, UK
Chekanov, SV
Chemarin, M
Chen, A
Chen, G
Chen, GM
Chen, HF
Chen, HS
Chen, M
Chiefari, G
Chien, CY
Cifarelli, L
Cindolo, F
Civinini, C
Clare, I
Clare, R
Cohn, HO
Coignet, G
Colijn, AP
Colino, N
Costantini, S
Cotorobai, F
de la Cruz, B
Csilling, A
Dai, TS
D'Alessandro, R
de Asmundis, R
Degre, A
Deiters, K
Denes, P
DeNotaristefani, F
DiBitonto, D
Diemoz, M
van Dierendonck, D
Di Lodovico, F
Dionisi, C
Dittmar, M
Dominguez, A
Doria, A
Dova, MT
Drago, E
Duchesneau, D
Duinker, P
Duran, I
Dutta, S
Easo, S
Efremenko, Y
El Mamouni, H
Engler, A
Eppling, FJ
Erne, FC
Ernenwein, JP
Extermann, P
Fabre, M
Faccini, R
Falciano, S
Favara, A
Fay, J
Fedin, O
Felcini, M
Fenyi, B
Ferguson, T
Ferroni, F
Fesefeldt, H
Fiandrini, E
Field, JH
Filthaut, F
Fisher, PH
Fisk, I
Forconi, G
Fredj, L
Freudenreich, K
Furetta, C
Galaktionov, T
Ganguli, SN
Garcia-Abia, P
Gau, SS
Gentile, S
Gerald, J
Gheordanescu, N
Giagu, S
Goldfarb, S
Goldstein, J
Gong, ZF
Gougas, A
Gratta, G
Gruenewald, MW
Gupta, VK
Gurtu, A
Gutay, LJ
Haas, D
Hartmann, B
Hasan, A
Hatzifotiadou, D
Hebbeker, T
Herve, A
Hirschfelder, J
van Hoek, WC
Hofer, H
Hoorani, H
Hou, SR
Hu, G
Innocente, V
Jenkes, K
Jin, BN
Jones, LW
de Jong, P
Josa-Mutuberria, I
Kasser, A
Khani, RA
Kamrad, D
Kamyshkov, Y
Kapustinsky, JS
Karyotakis, Y
Kaur, M
Kienzle-Focacci, MN
Kim, D
Kim, DH
Kim, JK
Kim, SC
Kinnison, WW
Kirkby, A
Kirkby, D
Kirkby, J
Kiss, D
Kittel, W
Klimentov, A
Konig, AC
Kopp, A
Korolko, I
Koutsenko, V
Kraemer, RW
Krenz, W
Kunin, A
Lacentre, P
de Guevara, PL
Landi, D
Lapoint, C
Lassila-Perini, K
Laurikainen, P
Lavorato, A
Lebeau, M
Lebedev, A
Lebrun, P
Lecomte, P
Lecoq, P
Le Coultre, P
Lee, HJ
Leggett, C
Le Goff, JM
Leiste, R
Leonardi, E
Levtchenko, P
Li, C
Lin, CH
Lin, WT
Linde, FL
Lista, L
Liu, ZA
Lohmann, W
Longo, E
Lu, W
Lu, YS
Lubelsmeyer, K
Luci, C
Luckey, D
Luminari, L
Lustermann, W
Ma, WG
Maity, M
Majumder, G
Malgeri, L
Malinin, A
Mana, C
Mangeol, D
Mangla, S
Marchesini, P
Marin, A
Martin, JP
Marzano, F
Massaro, GGG
McNally, D
Mele, S
Merola, L
Meschini, M
Metzger, WJ
von der Mey, M
Mi, Y
Migani, D
Mihul, A
van Mil, AJW
Milcent, H
Mirabelli, G
Mnich, J
Molnar, P
Monteleoni, B
Moore, R
Moulik, T
Mount, R
Muheim, F
Muijs, AJM
Nahn, S
Napolitano, M
Ness-Tedaldi, F
Newman, H
Niessen, T
Nippe, A
Nisati, A
Nowak, H
Oh, YD
Opitz, H
Organtini, G
Ostonen, R
Palit, S
Palomares, C
Pandoulas, D
Paoletti, S
Paolucci, P
Park, HK
Park, IH
Pascale, G
Passaleva, G
Patricelli, S
Paul, T
Pauluzzi, M
Paus, C
Pauss, F
Peach, D
Pei, YJ
Pensotti, S
Perret-Gallix, D
Petersen, B
Petrak, S
Pevsner, A
Piccolo, D
Pieri, M
Piroue, PA
Pistolesi, E
Plyaskin, V
Pohl, M
Pojidaev, V
Postema, H
Produit, N
Prokofiev, D
Quartieri, J
Rahal-Callot, G
Raja, N
Rancoita, PG
Rattaggi, M
Raven, G
Razis, P
Read, K
Ren, D
Rescigno, M
Reucroft, S
Riemann, S
Riles, K
Rind, O
Robohm, A
Rodin, J
Roe, BP
Romero, L
Rosier-Lees, S
Rosselet, P
van Rossum, W
Roth, S
Rubio, JA
Ruschmeier, D
Rykaczewski, H
Salicio, J
Sanchez, E
Sanders, MP
Sarakinos, ME
Sarkar, S
Sauvage, G
Schafer, C
Schegelsky, V
Schmidt-Kaerst, S
Schmitz, D
Schneegans, M
Scholz, N
Schopper, H
Schotanus, DJ
Schwenke, J
Schwering, G
Sciacca, C
Sciarrino, D
Servoli, L
Shevchenko, S
Shivarov, N
Shoutko, V
Shukla, J
Shumilov, E
Shvorob, A
Siedenburg, T
Son, D
Soulimov, V
Smith, B
Spillantini, P
Steuer, M
Stickland, DP
Stone, H
Stoyanov, B
Straessner, A
Sudhakar, K
Sultanov, G
Sun, LZ
Susinno, GF
Suter, H
Swain, JD
Tang, XW
Tauscher, L
Taylor, L
Ting, SCC
Ting, SM
Tonwar, SC
Toth, J
Tully, C
Tuchscherer, H
Tung, KL
Uchida, Y
Ulbricht, J
Uwer, U
Valente, E
Vesztergombi, G
Vetlitsky, I
Viertel, G
Vivargent, M
Vlachos, S
Volkert, R
Vogel, H
Vogt, H
Vorobiev, I
Vorobyov, AA
Vorvolakos, A
Wadhwa, M
Wallraff, W
Wang, JC
Wang, XL
Wang, ZM
Weber, A
Wu, SX
Wynhoff, S
Xu, J
Xu, ZZ
Yang, BZ
Yang, CG
Yao, XY
Ye, JB
Yeh, SC
You, JM
Zalite, A
Zalite, Y
Zemp, P
Zeng, Y
Zhang, Z
Zhang, ZP
Zhou, B
Zhou, Y
Zhu, GY
Zhu, RY
Zichichi, A
Ziegler, F
CA L3 Collaboration
TI Measurement of the B-d(0)-(B)over-bar(d)(0) oscillation frequency
SO EUROPEAN PHYSICAL JOURNAL C
LA English
DT Article
ID HADRONIC Z(0) DECAYS; LUND MONTE-CARLO; JET FRAGMENTATION; MIXING
PARAMETER; E+E-PHYSICS; MESON; LIFETIME; LEPTONS
AB Time-dependent B-0-(B) over bar(0) mixing is studied using about two million hadronic Z decays registered by L3 in 1994 and 1995. For this study three techniques are used. Tagging of the b-quark charge at decay time is performed by identifying leptons from semileptonic B decays. The flavour of the b quark at production time is determined from the charge of the lepton in the opposite hemisphere or by using a jet-charge technique. The proper time of the B-particle decay is obtained by reconstructing the production and decay vertices or by a measurement of the lepton impact parameter. The combined result for the frequency of B-d(0) meson oscillations is
Delta m(d) = 0.444 +/- 0.040 ps(-1).
C1 Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany.
NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands.
Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands.
Univ Michigan, Ann Arbor, MI 48109 USA.
Lab Annecy Le Vieux Phys Particules, LAPP, IN2P3, CNRS, F-74941 Annecy Le Vieux, France.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Basel, Inst Phys, CH-4056 Basel, Switzerland.
Inst High Energy Phys, Beijing 100039, Peoples R China.
Humboldt Univ, D-10099 Berlin, Germany.
Univ Bologna, I-40126 Bologna, Italy.
Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy.
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
Boston Univ, Boston, MA 02215 USA.
Northeastern Univ, Boston, MA 02115 USA.
Inst Atom Phys, R-76900 Bucharest, Romania.
Univ Bucharest, R-76900 Bucharest, Romania.
Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest, Hungary.
MIT, Cambridge, MA 02139 USA.
Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy.
Univ Florence, I-50125 Florence, Italy.
CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland.
World Lab, FBLJA Project, CH-1211 Geneva 23, Switzerland.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Univ Sci & Technol China, Hefei 230029, Anhui, Peoples R China.
Res Inst High Energy Phys, SEFT, SF-00014 Helsinki, Finland.
Univ Lausanne, CH-1015 Lausanne, Switzerland.
Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy.
Univ Lecce, I-73100 Lecce, Italy.
Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France.
CIEMAT, E-28040 Madrid, Spain.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy.
Univ Naples Federico II, I-80125 Naples, Italy.
Univ Cyprus, Dept Nat Sci, Nicosia, Cyprus.
Catholic Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands.
Natl Inst Nucl Phys & High Energy Phys, NL-6525 ED Nijmegen, Netherlands.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
CALTECH, Pasadena, CA 91125 USA.
Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
Univ Perugia, I-06100 Perugia, Italy.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Princeton Univ, Princeton, NJ 08544 USA.
Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
Univ Roma La Sapienza, I-00185 Rome, Italy.
Russian Acad Sci, Inst Nucl Phys, St Petersburg, Russia.
Univ Salerno, I-84100 Salerno, Italy.
Ist Nazl Fis Nucl, I-84100 Salerno, Italy.
Univ Calif San Diego, La Jolla, CA 92093 USA.
Univ Santiago, Dept Fis Particulas Elementales, E-15706 Santiago, Spain.
Bulgarian Acad Sci, Cent Lab Mechatron & Instrumentat, BU-1113 Sofia, Bulgaria.
Korea Adv Inst Sci & Technol, Ctr High Energy Phys, Taejon 305701, South Korea.
Univ Alabama, Tuscaloosa, AL 35486 USA.
Univ Utrecht, NL-3584 CB Utrecht, Netherlands.
NIKHEF H, NL-3584 CB Utrecht, Netherlands.
Purdue Univ, W Lafayette, IN 47907 USA.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
DESY, Inst Hochenergiephys, D-15738 Zeuthen, Germany.
Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.
Univ Hamburg, D-22761 Hamburg, Germany.
Natl Cent Univ, Chungli 32054, Taiwan.
Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan.
RP Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy.
RI Sanchez, Eusebio/H-5228-2015; Duran, Ignacio/H-7254-2015; Rancoita, Pier
Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Palomares,
Carmen/H-7783-2015; Fedin, Oleg/H-6753-2016; Roth, Stefan/J-2757-2016;
Kamyshkov, Yuri/J-7999-2016; Di Lodovico, Francesca/L-9109-2016;
Fiandrini, Emanuele/C-4549-2008; Lista, Luca/C-5719-2008; Kirkby,
Jasper/A-4973-2012; Servoli, Leonello/E-6766-2012; bertucci,
bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada,
Marcos/J-6934-2014; Josa, Isabel/K-5184-2014; de la Cruz,
Begona/K-7552-2014; Vogel, Helmut/N-8882-2014; Ferguson,
Thomas/O-3444-2014; Berdugo, Javier/A-2858-2015; D'Alessandro,
Raffaello/F-5897-2015
OI Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier
Giorgio/0000-0002-1990-4283; Palomares, Carmen/0000-0003-4374-9065;
Roth, Stefan/0000-0003-3616-2223; Kamyshkov, Yuri/0000-0002-3789-7152;
Di Lodovico, Francesca/0000-0003-3952-2175; Kirkby,
Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185;
Cerrada, Marcos/0000-0003-0112-1691; Vogel, Helmut/0000-0002-6109-3023;
Ferguson, Thomas/0000-0001-5822-3731; Berdugo,
Javier/0000-0002-7911-8532; D'Alessandro, Raffaello/0000-0001-7997-0306
NR 29
TC 17
Z9 17
U1 0
U2 4
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1434-6044
EI 1434-6052
J9 EUR PHYS J C
JI Eur. Phys. J. C
PD AUG
PY 1998
VL 5
IS 2
BP 195
EP 203
DI 10.1007/s100520050262
PG 9
WC Physics, Particles & Fields
SC Physics
GA 119YC
UT WOS:000075925300001
ER
PT J
AU Keller, S
Womersley, J
AF Keller, S
Womersley, J
TI Measurement of the W boson mass at the LHC
SO EUROPEAN PHYSICAL JOURNAL C
LA English
DT Article
AB We explore the ability of the Large Hadron Collider to measure the mass of the W boson. We believe that a precision better than similar to 15 MeV could be attained, based on a year of operation at low luminosity (10(33) cm(-2) s(-1)). If this is true; this measurement will be the world's best determination of the W mass.
C1 Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Keller, S (reprint author), Fermi Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
NR 19
TC 3
Z9 3
U1 0
U2 0
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 1434-6044
J9 EUR PHYS J C
JI Eur. Phys. J. C
PD AUG
PY 1998
VL 5
IS 2
BP 249
EP 253
PG 5
WC Physics, Particles & Fields
SC Physics
GA 119YC
UT WOS:000075925300005
ER
PT J
AU Albrecht, R
Antonenko, V
Awes, TC
Barlag, C
Bloomer, MA
Blume, C
Bock, D
Bock, R
Bohne, EM
Bucher, D
Claussen, A
Clewing, G
Eklund, A
Fokin, S
Franz, A
Garpman, S
Geurts, F
Glasow, R
Gustafsson, HA
Gutbrod, HH
Holker, G
Idh, J
Ippolitov, M
Jacobs, P
Kamermans, R
Kampert, KH
Karadjev, K
Kolb, BW
Lebedev, A
Lohner, H
Lund, I
Manko, V
Nikolaev, S
Obenshain, FE
Oskarsson, A
Otterlund, I
Peitzmann, T
Plasil, F
Poskanzer, AM
Purschke, M
Ritter, HG
Saini, S
Santo, R
Schmidt, HR
Soderstrom, K
Sorensen, SP
Stankus, P
Steffens, K
Steinhaeuser, P
Stenlund, E
Stuken, D
Twenhofel, C
Vinogradov, A
Young, GR
AF Albrecht, R
Antonenko, V
Awes, TC
Barlag, C
Bloomer, MA
Blume, C
Bock, D
Bock, R
Bohne, EM
Bucher, D
Claussen, A
Clewing, G
Eklund, A
Fokin, S
Franz, A
Garpman, S
Geurts, F
Glasow, R
Gustafsson, HA
Gutbrod, HH
Holker, G
Idh, J
Ippolitov, M
Jacobs, P
Kamermans, R
Kampert, KH
Karadjev, K
Kolb, BW
Lebedev, A
Lohner, H
Lund, I
Manko, V
Nikolaev, S
Obenshain, FE
Oskarsson, A
Otterlund, I
Peitzmann, T
Plasil, F
Poskanzer, AM
Purschke, M
Ritter, HG
Saini, S
Santo, R
Schmidt, HR
Soderstrom, K
Sorensen, SP
Stankus, P
Steffens, K
Steinhaeuser, P
Stenlund, E
Stuken, D
Twenhofel, C
Vinogradov, A
Young, GR
CA WA80 Collaboration
TI Transverse momentum distributions of neutral pions from nuclear
collisions at 200 AGeV
SO EUROPEAN PHYSICAL JOURNAL C
LA English
DT Article
ID HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; ULTRARELATIVISTIC ENERGIES;
CHARGED-PARTICLES; S+S COLLISIONS; ETA-MESONS; P-NUCLEUS; SPECTRA;
MODEL; CERN
AB New results on transverse mass spectra of neutral pions measured at central rapidity are presented for impact parameter selected 200 A.GeV S + S and S + Au collisions. The distributions cover more than 8 orders of magnitude in cross section over the range 0.3 GeV/c less than or equal to p(T) less than or equal to 4.0 GeV/c. Detailed comparisons to results from pp collisions are made. The spectra from all systems show a clear power-law like shape with similar curvature. Collisions of S + Au exhibit a larger mean transverse momentum than pp increasing with centrality. Predictions of string models and by hydrodynamic approaches including collective expansion and decays of short lived resonances are compared to the data and the implications are discussed.
C1 Gesell Schwerionenforsch, D-64220 Darmstadt, Germany.
Russian Res Ctr, Kurchatov Inst, Moscow 123182, Russia.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Univ Munster, D-48149 Munster, Germany.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Lund, S-22362 Lund, Sweden.
Univ Utrecht, NIKHEF H, NL-3508 TA Utrecht, Netherlands.
Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands.
Univ Tennessee, Knoxville, TN 37996 USA.
RP Albrecht, R (reprint author), Gesell Schwerionenforsch, D-64220 Darmstadt, Germany.
RI Peitzmann, Thomas/K-2206-2012; Lohner, Herbert/B-2397-2014;
OI Peitzmann, Thomas/0000-0002-7116-899X; Lohner,
Herbert/0000-0002-7441-739X; Kampert, Karl-Heinz/0000-0002-2805-0195
NR 49
TC 48
Z9 48
U1 0
U2 0
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 1434-6044
J9 EUR PHYS J C
JI Eur. Phys. J. C
PD AUG
PY 1998
VL 5
IS 2
BP 255
EP 267
DI 10.1007/s100520050267
PG 13
WC Physics, Particles & Fields
SC Physics
GA 119YC
UT WOS:000075925300006
ER
PT J
AU Spieles, C
Gerland, L
Hammon, N
Bleicher, M
Bass, SA
Stocker, H
Greiner, W
Lourenco, C
Vogt, R
AF Spieles, C
Gerland, L
Hammon, N
Bleicher, M
Bass, SA
Stocker, H
Greiner, W
Lourenco, C
Vogt, R
TI A microscopic calculation of secondary Drell-Yan production in heavy ion
collisions
SO EUROPEAN PHYSICAL JOURNAL C
LA English
DT Article
ID PARTON DISTRIBUTIONS; NUCLEAR COLLISIONS; DIMUON PRODUCTION; DILEPTON
PRODUCTION; LEPTON PRODUCTION; PAIR PRODUCTION; VECTOR-MESON; PROTON;
RADIATION; SUPPRESSION
AB A study of secondary Drell-Yan production in nuclear collisions is presented for SPS energies. In addition to the lepton pairs produced in the initial collisions of the projectile and target nucleons, we consider the potentially high dilepton yield from hard valence antiquarks in produced mesons and antibaryons. We calculate the secondary Drell-Yan contributions taking the collision spectrum of hadrons from the microscopic model URQMD. The contributions from meson-baryon interactions, small in hadron-nucleus interactions, are found to be substantial in nucleus-nucleus collisions at low dilepton masses. Preresonance collisions of partons may further increase the yields.
C1 Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany.
CERN, PPE, CH-1211 Geneva 23, Switzerland.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RP Spieles, C (reprint author), Univ Frankfurt, Inst Theoret Phys, Robert Mayer Str 8, D-60054 Frankfurt, Germany.
RI Bleicher, Marcus/A-2758-2010; Stoecker, Horst/D-6173-2013;
OI Stoecker, Horst/0000-0002-3282-3664; Bass, Steffen/0000-0002-9451-0954
NR 49
TC 23
Z9 23
U1 0
U2 0
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 1434-6044
J9 EUR PHYS J C
JI Eur. Phys. J. C
PD AUG
PY 1998
VL 5
IS 2
BP 349
EP 355
PG 7
WC Physics, Particles & Fields
SC Physics
GA 119YC
UT WOS:000075925300018
ER
PT J
AU van Smaalen, S
Dinnebier, RE
Schnelle, W
Holleman, I
von Helden, G
Meijer, G
AF van Smaalen, S
Dinnebier, RE
Schnelle, W
Holleman, I
von Helden, G
Meijer, G
TI Phase transitions of CO-intercalated C-60 crystals
SO EUROPHYSICS LETTERS
LA English
DT Article
ID SOLID C-60; FULLERENE C-60; HEAT-CAPACITY; DSC
AB We report the temperature dependence of the specific heat of (CO)(x)C-60, and the temperature dependence of the lattice parameter, as determined by X-ray powder diffraction. A first-order phase transition and a glass transition are found to occur at temperatures below the corresponding transition temperatures of pure C-60. The transition temperatures depend on x. Specific-heat measurements on a sample with x approximate to 0.5 show the orientational ordering transition at T-c = 248.8 K and the glass transition at T-g = 83.9 K. Contrary to pure C-60, the temperature dependence of the lattice parameter of (CO)xC(60) (x approximate to 0.67) does not show an anomaly at the glass transition, which is explained by the already expanded lattice of(CO)(x)C-60. The energy difference between major and minor orientations is determined as 19.1 meV.
C1 Univ Bayreuth, Crystallog Lab, D-95440 Bayreuth, Germany.
Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
Univ Nijmegen, Dept Mol & Laser Phys, NL-6525 ED Nijmegen, Netherlands.
Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RP van Smaalen, S (reprint author), Univ Bayreuth, Crystallog Lab, POB 101251, D-95440 Bayreuth, Germany.
RI Meijer, Gerard/D-2141-2009; van Smaalen, Sander/C-3489-2009; Holleman,
Iwan/D-6229-2013; Dinnebier, Robert/B-5642-2015; von Helden,
Gert/H-9357-2012
OI van Smaalen, Sander/0000-0001-9645-8240; Dinnebier,
Robert/0000-0003-2778-2113; von Helden, Gert/0000-0001-7611-8740
NR 13
TC 13
Z9 13
U1 0
U2 1
PU E D P SCIENCES
PI LES ULIS CEDEXA
PA 7, AVE DU HOGGAR, PARC D ACTIVITES COURTABOEUF, BP 112, F-91944 LES ULIS
CEDEXA, FRANCE
SN 0295-5075
J9 EUROPHYS LETT
JI Europhys. Lett.
PD AUG 1
PY 1998
VL 43
IS 3
BP 302
EP 307
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 109ZC
UT WOS:000075353400012
ER
PT J
AU Gang, H
Patel, J
Wu, XZ
Deutsch, M
Gang, O
Ocko, BM
Sirota, EB
AF Gang, H
Patel, J
Wu, XZ
Deutsch, M
Gang, O
Ocko, BM
Sirota, EB
TI Macroscopic manifestations of surface crystallization
SO EUROPHYSICS LETTERS
LA English
DT Article
ID LIQUID NORMAL-ALKANES
AB Two rather dramatic and unusual, visually observable phenomena occurring in molten wax, are reported and explained: Shaking the liquid in a vial will yield a foam, even though no surfactant is present; dust spread on the liquid surface is seen to move laterally with surprising speed. We performed systematic measurements on a single-component wax, the n-alkane C20H42, visualizing the surface under linear temperature gradients and in the presence of gas slowly bubbling from below. These macroscopic effects are studied quantitatively, and shown to be macroscopic manifestations of the existence of a monomolecular crystalline alkane layer at the liquid-vapor interface. A proposed phase diagram for the thin bubble mall is shown to account for the bubbles' coalescence and bursting behavior. These results imply the existence of a new mechanism for foam stability and can be expected to broadly occur in systems containing alkyl-chains.
C1 Exxon Res & Engn Co, Annandale, NJ 08801 USA.
No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Gang, H (reprint author), Exxon Res & Engn Co, Route 22 E, Annandale, NJ 08801 USA.
RI Sirota, Eric/A-7633-2009
NR 20
TC 17
Z9 17
U1 0
U2 1
PU E D P SCIENCES
PI LES ULIS CEDEXA
PA 7, AVE DU HOGGAR, PARC D ACTIVITES COURTABOEUF, BP 112, F-91944 LES ULIS
CEDEXA, FRANCE
SN 0295-5075
J9 EUROPHYS LETT
JI Europhys. Lett.
PD AUG 1
PY 1998
VL 43
IS 3
BP 314
EP 319
DI 10.1209/epl/i1998-00358-9
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 109ZC
UT WOS:000075353400014
ER
PT J
AU Sensen, CW
Charlebois, RL
Chow, C
Clausen, IG
Curtis, B
Doolittle, WF
Duguet, M
Erauso, G
Gaasterland, T
Garrett, RA
Gordon, P
de Jong, IH
Jeffries, AC
Kozera, C
Medina, N
De Moors, A
van der Oost, J
Phan, H
Ragan, MA
Schenk, MF
She, QX
Singh, RK
Tolstrup, N
AF Sensen, CW
Charlebois, RL
Chow, C
Clausen, IG
Curtis, B
Doolittle, WF
Duguet, M
Erauso, G
Gaasterland, T
Garrett, RA
Gordon, P
de Jong, IH
Jeffries, AC
Kozera, C
Medina, N
De Moors, A
van der Oost, J
Phan, H
Ragan, MA
Schenk, MF
She, QX
Singh, RK
Tolstrup, N
TI Completing the sequence of the Sulfolobus solfataricus P2 genome
SO EXTREMOPHILES
LA English
DT Review
DE Sulfolobus solfataricus; archaea; genomic sequence; MAGPIE
ID TRANSFER-RNA GENES; HALOFERAX-VOLCANII; ARCHAEON; HYPERTHERMOPHILES;
METABOLISM; ACIDOCALDARIUS; VECTORS; CLUSTER; INTRON; MAGPIE
AB The Sulfolobus solfataricus P2 genome collaborators are poised to sequence the entire 3-Mbp genome of this crenarchaeote archaeon, About 80% of the genome has been sequenced to date, with the rest of the sequence being assembled fast. In this publication we introduce the genomic sequencing and automated analysis strategy and present intial data derived from the sequence analysis. After an overview of the general sequence features, metabolic pathway studies are explained, using sugar metabolism as an example, The paper closes with an overview of repetitive elements in S. solfataricus.
C1 Natl Res Council Canada, Inst Marine Biosci, Halifax, NS B3H 3Z1, Canada.
Univ Ottawa, Dept Biol, Ottawa, ON K1N 6N5, Canada.
Dalhousie Univ, Dept Biochem, Sch Med, Halifax, NS B3H 4H7, Canada.
Novo Nordisk AS, Screening Biotechnol Enzyme Res, DK-2880 Bagsvaerd, Denmark.
Universite Paris Sud, Inst Genet & Microbiol, Lab Enzymol Acides Nucl, FR-91405 Orsay, France.
Univ Copenhagen, Inst Mol Biol, DK-1307 Copenhagen K, Denmark.
Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA.
Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
Wageningen Univ Agr, Microbiol Lab, NL-6703 CT Wageningen, Netherlands.
RP Sensen, CW (reprint author), Natl Res Council Canada, Inst Marine Biosci, 1411 Oxford St, Halifax, NS B3H 3Z1, Canada.
RI She, Qunxin/E-4311-2012; Sensen, Christoph/C-1798-2013; Ragan,
Mark/A-9825-2014
OI She, Qunxin/0000-0002-4448-6669; Sensen, Christoph/0000-0001-9604-8962;
Ragan, Mark/0000-0003-1672-7020
NR 30
TC 44
Z9 44
U1 1
U2 3
PU SPRINGER VERLAG
PI NEW YORK
PA 175 FIFTH AVE, NEW YORK, NY 10010 USA
SN 1431-0651
J9 EXTREMOPHILES
JI Extremophiles
PD AUG
PY 1998
VL 2
IS 3
BP 305
EP 312
DI 10.1007/s007920050073
PG 8
WC Biochemistry & Molecular Biology; Microbiology
SC Biochemistry & Molecular Biology; Microbiology
GA 114WZ
UT WOS:000075633300022
PM 9783178
ER
PT J
AU Amthor, JS
AF Amthor, JS
TI Perspective on the relative insignificance of increasing atmospheric CO2
concentration to crop yield
SO FIELD CROPS RESEARCH
LA English
DT Article
DE atmospheric CO2 concentration; crop yield; hay; Oryza; rice; Triticum;
wheat; yield improvement
ID CARBON-DIOXIDE; AGRICULTURAL PRODUCTIVITY; 18TH-CENTURY ENGLAND; WHEAT;
PHOTOSYNTHESIS; RESPONSES; CLIMATE; TRENDS; SPECULATIONS; ENRICHMENT
AB Average yield of most crops in many countries increased significantly during the past 50 to 100 years. Although atmospheric CO2 concentration, [CO2](a), also increased during that time period, and although crop growth and yield can respond positively to [CO2](a) increase, yield increases were due mainly to factors other than increasing [CO2](a). Similarly, some yield increases prior to 1900 were also associated primarily with factors other than changes in [CO2](a). In particular, past national average yield increases were the result chiefly of technological advances such as nitrogen fertilization; selection of genotypes with increased harvest index and disease resistance; mechanization of planting, cultivation, and harvesting; and chemical weed and pest control. If technology continues to increase average yields at recent rates, near-future increases in [CO2](a) will have only small impacts on yield in comparison to technology in many countries. Conversely, if future increases in [CO2](a) are the main drivers of future yield increases, those yield increases will be small. These points are demonstrated through a comparison of (i) long-term records of yield, (ii) data from key controlled-[CO2] experiments, and (iii) records of past [CO2](a). Finally, it is noted that continued [CO2](a) increase may bring with it climatic changes that could have negative or positive impacts on future yield. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Amthor, JS (reprint author), Oak Ridge Natl Lab, POB 2008,MS 6422, Oak Ridge, TN 37831 USA.
RI Amthor, Jeffrey/F-2696-2016
OI Amthor, Jeffrey/0000-0002-1410-6100
NR 60
TC 36
Z9 42
U1 5
U2 15
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4290
J9 FIELD CROP RES
JI Field Crop. Res.
PD AUG
PY 1998
VL 58
IS 2
BP 109
EP 127
DI 10.1016/S0378-4290(98)00089-6
PG 19
WC Agronomy
SC Agriculture
GA 114JJ
UT WOS:000075605100003
ER
PT J
AU Nebel, RA
Barnes, DC
AF Nebel, RA
Barnes, DC
TI The periodically oscillating plasma sphere
SO FUSION TECHNOLOGY
LA English
DT Article
DE electrostatic confinement; Penning traps; fusion reactors
ID INERTIAL-ELECTROSTATIC CONFINEMENT; FUSION
AB A new method of operating an inertial electrostatic confinement (IEC) device is proposed, and its performance is evaluated. The scheme involves an oscillating thermal cloud of ions immersed in a bath of electrons that form a harmonic oscillator potential. The scheme is called the periodically oscillating plasma sphere, and it appears to solve many of the problems that may limit other IEC systems to low gain. A set of self-similar solutions to the ion fluid equations is presented, and plasma performance is evaluated. Results indicate that performance enhancement of gridded IEC systems such as the Los Alamos intense neutron source device is possible as well as high-performance operation for low-loss systems such as the Penning trap experiment. Finally, a conceptual idea for a massively modular Penning trap reactor is also presented.
C1 Univ Calif Los Alamos Natl Lab, Plasma Theory Grp, Los Alamos, NM 87545 USA.
RP Nebel, RA (reprint author), Univ Calif Los Alamos Natl Lab, Plasma Theory Grp, POB 1663, Los Alamos, NM 87545 USA.
NR 27
TC 28
Z9 28
U1 0
U2 4
PU AMER NUCLEAR SOCIETY
PI LA GRANGE PK
PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 USA
SN 0748-1896
J9 FUSION TECHNOL
JI Fusion Technol.
PD AUG
PY 1998
VL 34
IS 1
BP 28
EP 45
PG 18
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 104YE
UT WOS:000075043900004
ER
PT J
AU Eichler, EE
Hoffman, SM
Adamson, AA
AF Eichler, EE
Hoffman, SM
Adamson, AA
TI Complex beta-satellite repeat structures and the expansion of the zinc
finger gene cluster in 19p12
SO GENOME RESEARCH
LA English
DT Article
ID TRANSCRIPTION FACTOR-IIIA; HUMAN-CHROMOSOME 19Q; INSITU HYBRIDIZATION;
REPRESSOR DOMAIN; DNA-SEQUENCES; HUMAN GENOME; EVOLUTION; FAMILY; CELLS;
REGION
AB We investigated the organization, architecture, and evolution of the largest cluster (similar to 4 Mb) of Kruppel-associated box zinc finger (KRAB-ZNF) genes located in cytogenetic band interval 19p12, A highly integrated physical map (similar to 700 kb) of overlapping cosmid and BAC clones was developed between genetic STS markers D19S454 and D19S269. Using ZNF91 exon-specific probes to interrogate a detailed EcoRI restriction map of the region, ZNF genes were found to be distributed in a head-to-tail fashion throughout the region with an average density of one ZNF duplicon every 150-180 kb of genomic distance. Sequence analysis of 208,967 bp of this region indicated the presence of two putative ZNF genes: one consisting of a novel member of this gene family (ZNF208) expressed ubiquitously in all tissues examined and the other representing a nonprocessed pseudogene (ZNF209), located 450 kb proximal to ZNF208. Large blocks of (similar to 25-kb) inverted beta-satellite repeats with a remarkably symmetrical higher order repeat structure were found to bracket the functional ZNF gene. Hybridization analysis using the beta-satellite repeat as a probe indicates that p-satellite interspersion between ZNF gene cassettes is a general property for 1.5 Mb of the ZNF gene cluster in 19p12. Both molecular clock data as well as a retroposon-mapping molecular fossil approach indicate that this ZNF cluster arose early during primate evolution (similar to 50 million years ago). We propose an evolutionary model in which heteromorphic pericentromeric repeat structures such as the beta satellites have been coopted to accommodate rapid expansion of a large gene family over a short period of evolutionary time.
C1 Univ Calif Lawrence Livermore Natl Lab, Human Genome Ctr, BBRP, Livermore, CA 94550 USA.
Case Western Reserve Univ, Sch Med, Dept Genet, Cleveland, OH 44106 USA.
RP Eichler, EE (reprint author), Univ Calif Lawrence Livermore Natl Lab, Human Genome Ctr, BBRP, L-452, Livermore, CA 94550 USA.
EM eee@po.cwru.edu
NR 79
TC 41
Z9 42
U1 0
U2 0
PU COLD SPRING HARBOR LAB PRESS
PI PLAINVIEW
PA 1 BUNGTOWN RD, PLAINVIEW, NY 11724 USA
SN 1054-9803
J9 GENOME RES
JI Genome Res.
PD AUG
PY 1998
VL 8
IS 8
BP 791
EP 808
PG 18
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity
GA 115PT
UT WOS:000075674400006
PM 9724325
ER
PT J
AU Kuss, BJ
O'Neill, GM
Eyre, H
Doggett, NA
Callen, DF
Davey, RA
AF Kuss, BJ
O'Neill, GM
Eyre, H
Doggett, NA
Callen, DF
Davey, RA
TI ARA, a novel ABC transporter, is located at 16p13.1, is deleted in
inv(16) leukemias, and is shown to be expressed in primitive
hematapoietic precursors
SO GENOMICS
LA English
DT Article
ID RESISTANCE-ASSOCIATED PROTEIN; ACUTE MYELOID-LEUKEMIA; HUMAN
TUMOR-CELLS; MULTIDRUG-RESISTANCE; GENE; MRP; OVEREXPRESSION;
CHROMOSOME-16; LOCALIZATION; DELETIONS
AB ATP-binding cassette (ABC), ATP-dependent transporters are a large superfamily of proteins that include the multidrug resistance proteins, P-glycoprotein and MRP (multidrug resistance protein). The ARA (anthracycline resistance-associated) gene that codes for a putative member of the ABC transporters has recently been cloned and shown to have high sequence homology to the gene for MRP, We have previously shown MRP to be deleted in a subset of inv(16) leukemic patients. The deletion of MRP was associated with an improved patient survival compared with inv(16) patients who did not have such a deletion. In this study, the ARA gene is mapped to 16p13.1, in the same physical interval as the inv(16) short-arm breakpoint. It is shown to be situated proximal to both MYH11, the gene involved in the primary breakpoint on the short arm of the inv(le), and MRP. A YAC clone has been isolated containing both MRP and ARA. FISH analysis of metaphase chromosomes from inv(16) patients has established the gene order as telomere-MYH11-MRP-ARA-centromere and demonstrated that both ARA and MRP are deleted in a subgroup of the inv(16) leukemias. ARA and MRP are both shown to be expressed in normal hematopoietic precursors including CD34(+) cells. The mapping of ARA to this region and its homology to MRP raises questions about its potential role in the biology of the inv(16) leukemias. (C) 1998 Academic Press
C1 Womens & Childrens Hosp, Dept Cytogenet & Mol Genet, N Adelaide, SA 5006, Australia.
Royal N Shore Hosp, Dept Clin Oncol, Bill Walsh Canc Res Labs, St Leonards, NSW 2065, Australia.
Univ Calif Los Alamos Natl Lab, Div Life Sci, Los Alamos, NM 87545 USA.
Univ Calif Los Alamos Natl Lab, Ctr Human Genome Studies, Los Alamos, NM 87545 USA.
RP Kuss, BJ (reprint author), Inst Child Hlth, Dept Mol Haematol, 30 Guilford St, London WC1N 1EH, England.
RI Callen, David/G-1975-2012; O'Neill, Geraldine/F-3112-2014
NR 18
TC 15
Z9 15
U1 0
U2 0
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0888-7543
J9 GENOMICS
JI Genomics
PD AUG 1
PY 1998
VL 51
IS 3
BP 455
EP 458
DI 10.1006/geno.1998.5349
PG 4
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 115PN
UT WOS:000075674000017
PM 9721217
ER
PT J
AU Centra, M
Memeo, E
d'Apolito, M
Savino, M
Ianzano, L
Notarangelo, A
Liu, JM
Doggett, NA
Zelante, L
Savoia, A
AF Centra, M
Memeo, E
d'Apolito, M
Savino, M
Ianzano, L
Notarangelo, A
Liu, JM
Doggett, NA
Zelante, L
Savoia, A
TI Fine exon-intron structure of the Fanconi anemia group A (FAA) gene and
characterization of two genomic deletions
SO GENOMICS
LA English
DT Article
ID SEQUENCE
AB Fanconi anemia (FA) is a genetically heterogeneous disease with at least eight genes on the basis of complementation groups (FAA to FAB). The analysis of the FAA gene in patients suggested the existence of deletions, none of which have thus far been characterized at the genomic level. A detailed restriction map of the PAA gene with the fine localization of its 43 exons is reported in this paper. We also describe the first two genomic deletions, one of 5.0 kb and another of at least 120 kb. The former was likely the result of a recombination between related Alu sequences. Since these interspersed repeats could generate deletions and insertions by mispairing, rearrangements of this gene are a possibility in those FA families in which FAA mutations have not been identified. (C) 1998 Academic Press
C1 Osped CSS, IRCCS, Serv Genet Med, I-71013 San Giovanni Rotondo, Italy.
Univ Calif Los Alamos Natl Lab, Ctr Human Genome Studies, Los Alamos, NM 87545 USA.
RP Savoia, A (reprint author), Osped CSS, IRCCS, Serv Genet Med, I-71013 San Giovanni Rotondo, Italy.
EM genetcss@fg.nettuno.it
RI d'Apolito, Maria/G-5793-2012; Savoia, Anna/B-6463-2014
OI Savoia, Anna/0000-0002-2407-2696
FU Telethon [E.0688]
NR 16
TC 29
Z9 30
U1 0
U2 0
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0888-7543
J9 GENOMICS
JI Genomics
PD AUG 1
PY 1998
VL 51
IS 3
BP 463
EP 467
DI 10.1006/geno.1998.5353
PG 5
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 115PN
UT WOS:000075674000019
PM 9721219
ER
PT J
AU Lundstrom, CC
Shaw, HF
Ryerson, FJ
Williams, Q
Gill, J
AF Lundstrom, CC
Shaw, HF
Ryerson, FJ
Williams, Q
Gill, J
TI Crystal chemical control of clinopyroxene-melt partitioning in the
Di-Ab-An system: Implications for elemental fractionations in the
depleted mantle
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Article
ID HIGH-FIELD-STRENGTH; URANIUM SERIES DISEQUILIBRIA; RARE-EARTH ELEMENTS;
TRACE-ELEMENT; HIGH-PRESSURE; DISTRIBUTION COEFFICIENTS; BASALTIC
LIQUID; SILICATE MELTS; ION MICROPROBE; OCEAN RIDGES
AB The partitioning of fifteen trace elements (Rb, Sr, Zr, Nh, Ba, La, Ce, Nd, Sm, Gd, Yb, Hf, Ta, Pb, and Th) between clinopyroxene and synthetic melt has been studied in two compositions along an isotherm in the diopside-albite-anorthite ternary at 1 bar pressure. The two compositions correspond to similar to Di(65)An(35) and similar to Di(55)Ab(45) and produce clinopyroxenes distinct in chemistry while melt compositions range from 49 wt% SiO2 to 61 wt% SiO2. The partition coefficients of high field strength elements (HFSE) increase by factors of 2-8 in Di-An experiments relative to Di-Ab experiments while other elements show very little change (+/-20%) between compositions. The change in HFSE partitioning correlates with increases in tetrahedral Al2O3 (Al-IV) content of clinopyroxenes in the anorthite-bearing experiments. Changes in D-Ta/D-Nb also correlate with Al-IV based on a survey of previously published determinations.
Tests of models of trace element substitution energetics produce values for Young's modulus (E) and optimum D (D-o) consistent with previous results for clinopyroxene for mono-, di-, and trivalent cations. The wide variations in partitioning behavior for tetra- and pentavalent cations are also consistent with these models because the high values for E make partition coefficients and relative HFSE partitioning sensitive to small changes in composition. The overall increase in HFSE partitioning and D-o for the DiAn composition is consistent with D-o increasing as a function of Al-IV, consistent with the role of Al-IV in charge balancing HFSE. However,Al-IV must also cause lattice changes that affect the ability of the clinopyroxene to discriminate between Nb and Ta.
There are two important implications to the observed dependence of HFSE partition coefficients on clinopyroxene aluminum content. First, HFSE will be fractionated from their adjacent REE within ultramafic samples during melting of spinel Iherzolite as clinopyroxene Al2O3 content decreases. Second, fractionations between Nb and Ta and Zr and Hf observed in mantle-derived magmas are consistent with extraction of melt in equilibrium with spinel Iherzolite having clinopyroxenes with similar to 5 wt% Al2O3. The fractionations among HFSE (Nb/Ta, HE/Zr) and between HFSE and REE observed in both are magmas and upper mantle peridotites may simply reflect prior depletion by major melting events (F > 10%) which left clinopyroxene as a residual phase. We speculate that the peridotitic sources for MORE and are lavas are similar in composition with both having significant HFSE anomalies. However, MORE do not typically record HFSE anomalies because of the complementary contribution of HFSE from enriched mafic veins interspersed within the peridotite. Copyright (C) 1998 Elsevier Science Ltd.
C1 Univ Calif Santa Cruz, Earth Sci Board, Santa Cruz, CA 95064 USA.
Univ Calif Lawrence Livermore Natl Lab, Div Earth Sci, Livermore, CA 94550 USA.
Univ Calif Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
RP Lundstrom, CC (reprint author), Brown Univ, Dept Geol Sci, Providence, RI 02912 USA.
RI Shaw, Henry/B-6445-2012
OI Shaw, Henry/0000-0003-0681-5430
NR 55
TC 83
Z9 86
U1 2
U2 18
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD AUG
PY 1998
VL 62
IS 16
BP 2849
EP 2862
DI 10.1016/S0016-7037(98)00197-5
PG 14
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 139TP
UT WOS:000077046000010
ER
PT J
AU Van der Woerd, J
Ryerson, FJ
Tapponnier, P
Gaudemer, Y
Finkel, R
Meriaux, AS
Caffee, M
Zhao, GG
He, QL
AF Van der Woerd, J
Ryerson, FJ
Tapponnier, P
Gaudemer, Y
Finkel, R
Meriaux, AS
Caffee, M
Zhao, GG
He, QL
TI Holocene left-slip rate determined by cosmogenic surface dating on the
Xidatan segment of the Kunlun fault (Qinghai, China)
SO GEOLOGY
LA English
DT Article
ID ROYAL-SOCIETY; ACTIVE FAULTS; TIBET; GEOTRAVERSE
AB Cosmogenic dating, using in situ (26)Al and (10)Be in quartz pebbles from alluvial terrace surfaces, constrains the late Holocene slip rate on the Xidatan segment of the Kunlun fault in northeastern Tibet. Two terrace risers offset by 24 +/- 3 and 33 +/- 4 m, having respective ages of 1788 +/- 388 and 2914 +/- 471 yr, imply a slip rate of 12.1 +/- 2.6 mm/yr. The full range of ages obtained (less than or equal to 22.8 k.y., most of them between 6.7 and 1.4 k.y) confinn that terrace deposition and incision, hence landform evolution, are modulated by post-glacial climate change. Coupled with minimum offsets of 9-12 m, this slip rate implies that great earthquakes (M similar to 8) with a recurrence time of 800-1000 yr, rupture the Kunlun fault near 94 degrees E.
C1 Inst Phys Globe, Lab Tecton Mecan Lithosphere, URA 1093, F-75252 Paris 05, France.
Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
State Seismol Bur, Inst Crustal Dynam, Beijing 100085, Peoples R China.
RP Van der Woerd, J (reprint author), Inst Phys Globe, Lab Tecton Mecan Lithosphere, URA 1093, 4 Pl Jussieu, F-75252 Paris 05, France.
RI Meriaux, Anne-Sophie/G-1754-2010; Tapponnier, .Paul/B-7033-2011; Caffee,
Marc/K-7025-2015; Gaudemer, Yves/K-3921-2012
OI Tapponnier, .Paul/0000-0002-7135-1962; Caffee, Marc/0000-0002-6846-8967;
NR 15
TC 159
Z9 163
U1 0
U2 10
PU GEOLOGICAL SOC AMER, INC
PI BOULDER
PA PO BOX 9140, BOULDER, CO 80301-9140 USA
SN 0016-8505
J9 GEOLOGY
JI Geology
PD AUG
PY 1998
VL 26
IS 8
BP 695
EP 698
DI 10.1130/0091-7613(1998)026<0695:HLSRDB>2.3.CO;2
PG 4
WC Geology
SC Geology
GA 109JE
UT WOS:000075317700006
ER
PT J
AU Mak, JE
Southon, JR
AF Mak, JE
Southon, JR
TI Assessment of tropical OH seasonality using atmospheric (CO)-C-14
measurements from Barbados
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID CARBON-MONOXIDE; TROPOSPHERIC OH; ABUNDANCE; CH3CCL3
AB (CO)-C-14 can be used to assess the mean OH concentration if the atmospheric inventory is determined. However, atmospheric transport must be well represented. The dependence on transport has previously been predicted in model studies to be much smaller in the tropics than in the middle latitudes. To test this, we made weekly measurements of (CO)-C-14 from a tropical station in the Atlantic (Barbados, West Indies, 13 degrees 10'N, 53 degrees 26'W) from July 1996 to July 1997. These data are compared with the (CO)-C-14 seasonal cycle predicted from a zero dimensional chemistry model. Results show that the observed seasonal cycle correlates well with predicted (CO)-C-14 from the chemistry model during the summer and fall, however significant deviation from the chemistry model becomes apparent in the wintertime, which is probably largely a result of (CO)-C-14 being transported to the tropics from the middle latitudes, and is in contrast to earlier modeling studies. Transport has a stronger effect in the winter months because the latitudinal gradient in (CO)-C-14 is large and the lifetime is long, since OH concentrations are at their seasonal low.
C1 SUNY Stony Brook, Marine Sci Res Ctr, Inst Terr & Planetary Atmospheres, Stony Brook, NY 11794 USA.
Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA.
RP Mak, JE (reprint author), SUNY Stony Brook, Marine Sci Res Ctr, Inst Terr & Planetary Atmospheres, Stony Brook, NY 11794 USA.
NR 23
TC 19
Z9 20
U1 0
U2 0
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD AUG 1
PY 1998
VL 25
IS 15
BP 2801
EP 2804
DI 10.1029/98GL02180
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 108WZ
UT WOS:000075289900011
ER
PT J
AU Reid, JB
Reynolds, JL
Connolly, NT
Getz, SL
Polissar, PJ
Winship, LJ
Hainsworth, LJ
AF Reid, JB
Reynolds, JL
Connolly, NT
Getz, SL
Polissar, PJ
Winship, LJ
Hainsworth, LJ
TI Carbon isotopes in aquatic plants, Long Valley caldera, California as
records of past hydrothermal and magmatic activity
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID MAMMOTH MOUNTAIN; SYSTEM; USA; RADIOCARBON; UNREST; HELIUM; WATERS;
RIVER
AB Hot and cold springs contribute "dead" (C-14 free) dissolved inorganic carbon (DIC) to the Owens River and Hot Creek. Headwaters aquatic plants have modem C-14, but live plants downstream of the intracaldera springs are depleted in C-14, (,, low as 19% modem, with apparent ages up to 13.3 kyrs). In an abandoned meander of the upper Owens River, preserved streambed plants are buried by 600 year old Inyo Craters pumice. Apparent C-14 ages of these plants exceed true ages by similar to 1100 years indicating that they also incorporated dead DIC as they grew. The preserved plants are downstream of Big Springs, whose elevated dead DIC may represent magmatic `CO2. The buried plants incorporated similar to 10% dead carbon, although modern plants here have similar to 50% dead carbon, suggesting that more magmatic CO, is now entering the upper Owens River than at the time of the Inyo Craters eruptions 600 years ago.
C1 Hampshire Coll, Sch Nat Sci, Amherst, MA 01002 USA.
Lawrence Livermore Natl Labs, Livermore, CA 94551 USA.
RP Reid, JB (reprint author), Hampshire Coll, Sch Nat Sci, Amherst, MA 01002 USA.
RI Polissar, Pratigya/L-8131-2013;
OI Polissar, Pratigya/0000-0001-5483-1625
NR 20
TC 3
Z9 3
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD AUG 1
PY 1998
VL 25
IS 15
BP 2853
EP 2856
DI 10.1029/98GL01854
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 108WZ
UT WOS:000075289900024
ER
PT J
AU Jordanova, VK
Farrugia, CJ
Quinn, JM
Thorne, RM
Ogilvie, KW
Lepping, RP
Lu, G
Lazarus, AJ
Thomsen, MF
Belian, RD
AF Jordanova, VK
Farrugia, CJ
Quinn, JM
Thorne, RM
Ogilvie, KW
Lepping, RP
Lu, G
Lazarus, AJ
Thomsen, MF
Belian, RD
TI Effect of wave-particle interactions on ring current evolution for
January 10-11, 1997: Initial results
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID ION-CYCLOTRON WAVES; MAGNETOSPHERE; ELECTRON
AB We simulate the ring current evolution during the magnetic storm caused by Earth passage of the January 1997 magnetic cloud. Compared to previous studies, we include for the first time energy diffusion caused by wave-particle interactions. The modeled Dst index agrees reasonably well with the measured one, corrected for magnetopause currents and currents induced in the solid Earth. We compare H+ distributions calculated from our model with those measured by the HYDRA instrument on the POLAR spacecraft and find that: a) the agreement between theory and data at large L shells (L>5.5) is very good; b) although the agreement at low L shells is improved when scattering by EMIC waves is included, the result is not entirely satisfactory, suggesting that either transport in a more realistic magnetospheric electric field or additional loss processes should be considered.
C1 Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
MIT, Ctr Space Res, Cambridge, MA 02139 USA.
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA.
Univ Calif Los Angeles, Dept Atmospher Sci, Los Angeles, CA 90095 USA.
RP Jordanova, VK (reprint author), Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
RI Lu, Gang/A-6669-2011;
OI Jordanova, Vania/0000-0003-0475-8743
NR 18
TC 48
Z9 49
U1 0
U2 0
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD AUG 1
PY 1998
VL 25
IS 15
BP 2971
EP 2974
DI 10.1029/98GL00649
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 108WZ
UT WOS:000075289900054
ER
PT J
AU Baker, DN
Pulkkinen, TI
Li, X
Kanekal, SG
Ogilvie, KW
Lepping, RP
Blake, JB
Callis, LB
Rostoker, G
Singer, HJ
Reeves, GD
AF Baker, DN
Pulkkinen, TI
Li, X
Kanekal, SG
Ogilvie, KW
Lepping, RP
Blake, JB
Callis, LB
Rostoker, G
Singer, HJ
Reeves, GD
TI A strong CME-related magnetic cloud interaction with the Earth's
magnetosphere: ISTP observations of rapid relativistic electron
acceleration on May 15, 1997
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID RADIATION BELT; ENERGIZATION; INSTRUMENT
AB A geoeffective magnetic cloud impacted the Earth early on 15 May 1997. The cloud exhibited strong initial southward interplanetary magnetic field (B(z)similar to-25 nT), which caused intense substorm activity and an intense geomagnetic storm (Dst similar to-170 nT). SAMPEX data showed that relativistic electrons (E greater than or equal to 1.0 MeV) appeared suddenly deep in the magnetosphere at L=3 to 4. These electrons were not directly "injected" from higher altitudes (i.e., from the magnetorail), nor did they come from an interplanetary source. The electron increase was preceded (for similar to 2 hrs) by remarkably strong low-frequency wave activity as seen by CANOPUS ground stations and by the GOES-8 spacecraft at geostationary orbit. POLAR/CEPPAD measurements support the result that high-energy electrons suddenly appeared deep in the magnetosphere. Thus, these new multi-point data suggest that strong magnetospheric waves can quickly and efficiently accelerate electrons to multi-MeV energies deep in the radiation belts on timescales of tens of minutes.
C1 Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA.
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
Aerospace Corp, Los Angeles, CA 90009 USA.
Langley Res Ctr, Hampton, VA 23681 USA.
Univ Alberta, Edmonton, AB T6G 2J1, Canada.
NOAA, Space Environm Ctr, Boulder, CO 80302 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Baker, DN (reprint author), Univ Colorado, Atmospher & Space Phys Lab, 1234 Innovat Dr, Boulder, CO 80303 USA.
RI Reeves, Geoffrey/E-8101-2011; Pulkkinen, Tuija/D-8403-2012
OI Reeves, Geoffrey/0000-0002-7985-8098; Pulkkinen,
Tuija/0000-0002-6317-381X
NR 17
TC 95
Z9 99
U1 0
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD AUG 1
PY 1998
VL 25
IS 15
BP 2975
EP 2978
DI 10.1029/98GL01134
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 108WZ
UT WOS:000075289900055
ER
PT J
AU Sugama, T
AF Sugama, T
TI Interfaces between geothermal brine-induced scales and SiC-filled
polymer linings
SO GEOTHERMICS
LA English
DT Article
DE geothermal; corrosion; heat exchanger; silicon carbide; polymeric
materials
ID SPECTROSCOPY; SURFACES
AB Silicon carbide (SiC) grit-filled polymeric materials with high thermal conductivity can be used to line carbon-steel heat-exchanger tubes in geothermal power plants at moderate temperatures and to improve resistance to corrosion. The susceptibility of ester groups within the polymers to a reaction with Ba, which is among the chemical ingredients of some geothermal brines, is a critical issue for this lining material because of the formation of Ba-complexed carboxylate hydrolysates. Such hydrolysates promote the deposition of brine-induced scales. (C) 1998 CNR. Published by Elsevier Science Ltd. All rights reserved.
C1 Brookhaven Natl Lab, Energy Efficiency & Conservat Div, Div Appl Sci, Upton, NY 11973 USA.
RP Sugama, T (reprint author), Brookhaven Natl Lab, Energy Efficiency & Conservat Div, Div Appl Sci, Upton, NY 11973 USA.
NR 18
TC 6
Z9 6
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0375-6505
J9 GEOTHERMICS
JI Geothermics
PD AUG
PY 1998
VL 27
IS 4
BP 387
EP 400
DI 10.1016/S0375-6505(98)00019-4
PG 14
WC Energy & Fuels; Geosciences, Multidisciplinary
SC Energy & Fuels; Geology
GA 130CB
UT WOS:000076500700001
ER
PT J
AU Moridis, GJ
Pruess, K
AF Moridis, GJ
Pruess, K
TI T2SOLV: An enhanced package of solvers for the TOUGH2 family of
reservoir simulation codes
SO GEOTHERMICS
LA English
DT Article
DE matrix solvers; LU decomposition; matrix pre-processors; matrix
ordering; reservoir; simulation; modelling
ID NONSYMMETRIC LINEAR-SYSTEMS
AB T2SOLV is an enhanced package of matrix solvers for the TOUGH2 family of codes. T2SOLV includes all the Preconditioned Conjugate Gradient (PCG) solvers used in T2CG1, the current solver package, as well as LUBAND, a new direct solver and DLUSTB, a PCG solver based which implements the BiCGSTAB(m) method. LUBAND, the new direct solver, is faster, more reliable and capable of solving problems orders of magnitude larger than the MA28 routine which it replaces. A significant capability of T2VOC is two types of matrix preprocessing, which make possible the solution of a class of challenging numerical problems (previously tractable only with direct solvers) using the PCG routines. For regular grids, the size of problems tractable with direct solvers is doubled by implementing a D4 alternative diagonal gridblock ordering option. (C) 1998 CNR. Published by Elsevier Science Ltd. All rights reserved.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, 1 Cyclotron Rd,90-1116, Berkeley, CA 94720 USA.
NR 24
TC 15
Z9 16
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0375-6505
EI 1879-3576
J9 GEOTHERMICS
JI Geothermics
PD AUG
PY 1998
VL 27
IS 4
BP 415
EP 444
DI 10.1016/S0375-6505(98)00021-2
PG 30
WC Energy & Fuels; Geosciences, Multidisciplinary
SC Energy & Fuels; Geology
GA 130CB
UT WOS:000076500700003
ER
PT J
AU Rood, AS
White, GJ
Kendrick, DT
AF Rood, AS
White, GJ
Kendrick, DT
TI Measurement of Rn-222 flux, Rn-222 emanation, and Ra-226,Ra-228
concentration from injection well pipe scale
SO HEALTH PHYSICS
LA English
DT Article
DE naturally occurring radionuclides; diffusion; risk analysis; radium
AB Rn-222 flux (Bq s(-1)) was measured from the ends of twenty sections of produced water injection tubing (pipe) containing barite scale contaminated with naturally occurring radioactive material. Exposure measurements near the pipes were as high as 77.4 nC kg(-1)h(-1) (300 mu R h(-1)). Flux measurements were accomplished by first purging the pipes with dry nitrogen and then collecting the outflow (nitrogen and radon) on charcoal columns affixed to the end of the pipe for 66 hours. As determined in this manner, Rn-222 flux from the ends of the pipe ranged from 0.017 to 0.10 Bq s(-1) (0.46 to 2.7 pCi s(-1)). Following the radon Bw measurements, pipe scale was removed and a representative sample was taken for Ra-226 and Ra-228 concentration measurements and determination of Rn-222 emanation fractions (the fraction of the total radon contained in a material that is released from the material and free to migrate). The samples were also analyzed for gross mineral content. Emanation fraction measurements for Rn-222 ranged from 0.020 to 0.063, while Ra-226 concentrations ranged from 15.7 to 102 Bq g(-1) (424 to 2,760 pCi g(-1)). Barite was the predominate mineral in 17 of the 20 scale samples collected. Much of the previous work dealing with radon emanation fraction measurements has involved uranium mill tailings. Compared to mill tailings and natural soils which have emanation fractions that typically range from 0.1 to 0.3, the emanation fractions measured for these NORM scales are substantially lower.
C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA.
Sci & Engn Associates Inc, Albuquerque, NM 87110 USA.
NR 16
TC 12
Z9 12
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD AUG
PY 1998
VL 75
IS 2
BP 187
EP 192
DI 10.1097/00004032-199808000-00011
PG 6
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 102YB
UT WOS:000074952900011
PM 9685074
ER
PT J
AU Cossairt, JD
Grossman, NL
Marshall, ET
AF Cossairt, JD
Grossman, NL
Marshall, ET
TI Some remarks on the assessment of dose equivalent due to neutrinos -
Response to Collar
SO HEALTH PHYSICS
LA English
DT Letter
C1 Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
NR 5
TC 0
Z9 0
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 AUG
PY 1998
VL 75
IS 2
BP 212
EP 212
PG 1
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 102YB
UT WOS:000074952900020
ER
PT J
AU Timchalk, C
Selim, S
Sangha, G
Bartels, MJ
AF Timchalk, C
Selim, S
Sangha, G
Bartels, MJ
TI The pharmacokinetics and metabolism of C-14/C-13-labeled
ortho-phenylphenol formation following dermal application to human
volunteers
SO HUMAN & EXPERIMENTAL TOXICOLOGY
LA English
DT Article
DE pharmacokinetics; ortho-phenylphenol; humans
ID ABSORPTION; RATS
AB 1. The pharmacokinetics and metabolism of uniformly labeled C-14/C-13-ortho-phenylphenol (OPP) were followed in six human male volunteers given a single 8 h dermal dose of 6 mu g OPP/kg body weight formulated as a 0.4% (w/v) solution in isopropyl alcohol. The application site was covered with a non-occlusive dome allowing free movement of air, but preventing the loss of radioactivity due to physical contact. At 8 h post-exposure the non-occlusive dome was removed, the dose site was wiped with isopropyl alcohol containing swabs and the skin surface repeatedly stripped with tape. Blood specimens, urine, and feces were collected from each volunteer over a 5 day postexposure period and were analyzed for radioactivity and metabolites (urine only).
2. Following dermal application, peak plasma levels of radioactivity were obtained within 4 h post-exposure and rapidly declined with virtually all of the absorbed dose rapidly excreted into the urine within 24 h postexposure. A one-compartment pharmacokinetic model was used to describe the time-course of OPP absorption and clearance in male human volunteers. Approximately 43% of the dermally applied dose was absorbed through the skin with an average absorption half-life of 10 h. Once absorbed the renal clearance of OPP was rapid with an average half-life of 0.8 h. The rate limiting step for renal clearance was the relatively slower rate of dermal absorption; therefore the pharmacokinetics of OPP in humans was described by a 'flip-flop' single compartment model. Overall, the pharmacokinetics were similar between individuals, and the model parameters were in excellent agreement with the experimental data.
3. Approximately 73% of the total urinary radioactivity was accounted for as free OPP, OPP-sulfate and OPP-glucuronide conjugates. The sulfate conjugate was the major metabolite (similar to 69%). Therefore, total urinary OPP equivalents (acid-labile conjugates+free OPP) can be used to estimate the systemically absorbed dose of OPP.
4. The rapid excretion of OPP and metabolites into the urine following dermal exposure indicates that OPP is unlikely to accumulate in humans upon repeated exposure. Based on these data, blood and/or urinary OPP concentration (acid-labile conjugates) could be utilized to quantify the amount of OPP absorbed by humans under actual use conditions.
C1 Dow Chem Co, Hlth & Environm Sci Res Lab, Midland, MI 48674 USA.
Biol Testing Ctr, Irvine, CA 92713 USA.
Bayer Corp, Toxicol Res Lab, Stillwell, KS 66085 USA.
RP Timchalk, C (reprint author), Battelle Mem Inst, Pacific NW Div, Mol Biosci Dept, POB 999,MS P7-59, Richland, WA 99352 USA.
NR 14
TC 9
Z9 9
U1 0
U2 2
PU STOCKTON PRESS
PI BASINGSTOKE
PA HOUNDMILLS, BASINGSTOKE RG21 6XS, HAMPSHIRE, ENGLAND
SN 0144-5952
J9 HUM EXP TOXICOL
JI Hum. Exp. Toxicol.
PD AUG
PY 1998
VL 17
IS 8
BP 411
EP 417
DI 10.1191/096032798678909115
PG 7
WC Toxicology
SC Toxicology
GA 116DQ
UT WOS:000075708700001
PM 9756132
ER
PT J
AU Bogen, KT
Layton, DW
AF Bogen, KT
Layton, DW
TI Risk management for plausibly hermetic environmental carcinogens: The
case of radon
SO HUMAN & EXPERIMENTAL TOXICOLOGY
LA English
DT Article
DE alpha; dose-response model; epidemiology; hormesis; linear-no-threshold;
radiation; risk management
ID INDUCED LUNG-CANCER; UNITED-STATES; INDOOR RADON; MITIGATION
AB Risk management typically involves efforts to reduce human exposures by establishing regulations that limit the concentration of the substance in environmental media. In cases where a substance is widely used in commerce or is naturally occurring in the environment, compliance costs can be substantial because of nationwide requirements to add expensive control technologies. Uncertainties in a dose-response function further impact risk management decisions because they may correspond to large differences in health benefit per unit exposure reduction. These problems are highlighted in the case of plausibly hermetic environmental carcinogens, for which a linear-no-threshold (LNT) dose-response model has been the traditional regulatory default assumption. In this case, model uncertainty is pivotal, and risk management is consequently inherently controversial. However, marginal cost functions that arise for plausibly hermetic carcinogens are expected to possess a common analytic feature that may be particularly useful for this type of risk management problem. Specifically, marginal cost functions in this context are expected to have roots reflecting contaminant concentration values above which regulatory goals may be optimally placed subject to cost constraints. Here we illustrate this heuristic feature in the case of residential radon, using both a LNT model and a biologically plausible hermetic model to predict associated risks of lung cancer mortality.
C1 Univ Calif Lawrence Livermore Natl Lab, Hlth & Ecol Assessment Div L396, Livermore, CA 94550 USA.
RP Bogen, KT (reprint author), Univ Calif Lawrence Livermore Natl Lab, Hlth & Ecol Assessment Div L396, POB 5508, Livermore, CA 94550 USA.
NR 18
TC 4
Z9 4
U1 0
U2 3
PU STOCKTON PRESS
PI BASINGSTOKE
PA HOUNDMILLS, BASINGSTOKE RG21 6XS, HAMPSHIRE, ENGLAND
SN 0144-5952
J9 HUM EXP TOXICOL
JI Hum. Exp. Toxicol.
PD AUG
PY 1998
VL 17
IS 8
BP 463
EP 467
DI 10.1191/096032798678909106
PG 5
WC Toxicology
SC Toxicology
GA 116DQ
UT WOS:000075708700011
PM 9756142
ER
PT J
AU Chyba, CF
Ostro, SJ
Edwards, BC
AF Chyba, CF
Ostro, SJ
Edwards, BC
TI Radar detectability of a subsurface ocean on Europa
SO ICARUS
LA English
DT Article
ID RONNE ICE SHELF; GALILEAN SATELLITES; DIELECTRIC-PROPERTIES; JUPITER;
ANTARCTICA; GANYMEDE; CALLISTO; TEMPERATURE; MICROWAVE; EVOLUTION
AB A spacecraft in orbit around Jupiter's moon Europa can use ice penetrating radar to probe for a possible liquid water ocean beneath Europe's surface ice and to characterize other important subsurface structure. Consideration of available constraints on the properties of Europa's ice, possible subsurface temperature gradients, and possible impurities in the ice places an upper limit of about 10 km on the depth to which an ocean might be detectable with an orbiting radar. (C) 1998 Academic Press.
C1 Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA.
CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
RP Chyba, CF (reprint author), SETI Inst, 2035 Landings Dr, Mountain View, CA 94043 USA.
EM chyba@lpl.arizona.edu
NR 74
TC 63
Z9 63
U1 0
U2 9
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0019-1035
J9 ICARUS
JI Icarus
PD AUG
PY 1998
VL 134
IS 2
BP 292
EP 302
DI 10.1006/icar.1998.5961
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 117AP
UT WOS:000075757800010
ER
PT J
AU Paxson, V
Mahdavi, J
Adams, A
Mathis, M
AF Paxson, V
Mahdavi, J
Adams, A
Mathis, M
TI An architecture for large-scale internet measurement
SO IEEE COMMUNICATIONS MAGAZINE
LA English
DT Article
AB Historically, the Internet has been woefully under-measured and under-instrumented. The problem is only getting worse with the network's ever-increasing size. We discuss the goals and requirements for building a "measurement infrastructure" for the Internet, in which a collection of measurement "platforms" cooperatively measure the properties of Internet paths and clouds by exchanging test traffic among themselves. The key emphasis of the architecture, which forms the underpinnings of the National Internet Measurement infrastructure (NIMI) project, is on tackling problems related to scale. Consequently, the architecture emphasizes decentralized control of measurements; strong authentication and security; mechanisms for both maintaining tight administrative control over who can perform what measurements using which platforms, and delegation of some forms of measurement as a site's measurement policy permits; and simple configuration and maintenance of platforms.
C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
RP Paxson, V (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 13
TC 90
Z9 101
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 0163-6804
J9 IEEE COMMUN MAG
JI IEEE Commun. Mag.
PD AUG
PY 1998
VL 36
IS 8
BP 48
EP 54
DI 10.1109/35.707817
PG 7
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA 108VD
UT WOS:000075285600005
ER
PT J
AU Crowder, MA
Carey, PG
Smith, PM
Sposili, RS
Cho, HS
Im, JS
AF Crowder, MA
Carey, PG
Smith, PM
Sposili, RS
Cho, HS
Im, JS
TI Low-temperature single-crystal Si TFT's fabricated on Si films processed
via sequential lateral solidification
SO IEEE ELECTRON DEVICE LETTERS
LA English
DT Article
DE excimer laser crystallization; sequential lateral solidification;
super-lateral growth; thin-film transistors
ID LASER-INDUCED CRYSTALLIZATION; SILICON FILMS; MOSFETS
AB Nonhydrogenated, n-channel, lo vv-temperature-processed, single-crystal Si thin-film transistors (TFT's) have been fabricated on Si thin films prepared via sequential lateral solidification (SLS), The device characteristics of the resulting SLS TFT's exhibit properties and a le, el of performance that are superior to poly crystalline Si-based TFT's and are comparable to similar devices fabricated on silicon-on-insulator (SOI) substrates or bulk-Si wafers. We attribute these high-performance device characteristics to the absence of high-angle grain-boundaries within the active channel portion of the TFT's.
C1 Columbia Univ, Mat Sci Program, New York, NY 10027 USA.
Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Crowder, MA (reprint author), Columbia Univ, Mat Sci Program, New York, NY 10027 USA.
NR 14
TC 78
Z9 80
U1 2
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 0741-3106
J9 IEEE ELECTR DEVICE L
JI IEEE Electron Device Lett.
PD AUG
PY 1998
VL 19
IS 8
BP 306
EP 308
DI 10.1109/55.704408
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA 102NR
UT WOS:000074931000012
ER
PT J
AU Peterfreund, N
Baram, Y
AF Peterfreund, N
Baram, Y
TI Convergence analysis of nonlinear dynamical systems by nested Lyapunov
functions
SO IEEE TRANSACTIONS ON AUTOMATIC CONTROL
LA English
DT Article
DE domain of attraction; equilibrium points; nested Lyapunov functions;
time of convergence
ID ATTRACTION
AB A method for estimating the domain of attraction of an asymptotically stable equilibrium point of a nonlinear dynamical system and for deriving an upper bound on the time of convergence in the estimated domain is presented. It is based on a set of Lyapunov functions defined on nested regions in the state space. The estimated domain, obtained as the union of a subset of these regions, is based on a local Lyapunov-like condition for the convergence of the solution in each region to its inner boundary. A bound on the time of convergence within the estimated domain is given by the sum of the local bounds. This concept is implemented using a class of regions whose boundaries are described by Fourier series.
C1 Oak Ridge Natl Lab, Ctr Engn Syst Adv Res, Oak Ridge, TN 37830 USA.
Technion Israel Inst Technol, Dept Comp Sci, IL-32000 Haifa, Israel.
RP Peterfreund, N (reprint author), Oak Ridge Natl Lab, Ctr Engn Syst Adv Res, Oak Ridge, TN 37830 USA.
NR 12
TC 6
Z9 6
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 0018-9286
J9 IEEE T AUTOMAT CONTR
JI IEEE Trans. Autom. Control
PD AUG
PY 1998
VL 43
IS 8
BP 1179
EP 1184
DI 10.1109/9.704997
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA 109TC
UT WOS:000075338400023
ER
PT J
AU Hardin, DP
Roach, DW
AF Hardin, DP
Roach, DW
TI Multiwavelet prefilters - I: Orthogonal prefilters preserving
approximation order p <= 2
SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL
PROCESSING
LA English
DT Article
DE approximation order; multiwavelets; orthogonality; pre-filter;
quasi-interpolation; wavelets
AB In applications using multiwavelets, there is a necessary step of associating a given discrete signal with a function in the scaling function space V-0. This association is equivalent to including a prefilter and a post-filter for the filter bank determined by the underlying multiwavelets. We give a construction for orthogonal (paraunitary) finite-impulse esponse (FIR) prefilters that preserve the approximation order of a given arbitrary scaling vector Phi with approximation order p less than or equal to 2, We give several such prefilters for the DGHM multiwavelet.
C1 Vanderbilt Univ, Dept Math, Nashville, TN 37203 USA.
Sandia Natl Labs, Dept Appl & Numer Math, Albuquerque, NM 87185 USA.
RP Hardin, DP (reprint author), Vanderbilt Univ, Dept Math, Nashville, TN 37203 USA.
RI Hardin, Douglas/C-3386-2013
OI Hardin, Douglas/0000-0003-0867-2146
NR 8
TC 62
Z9 73
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 1057-7130
J9 IEEE T CIRCUITS-II
JI IEEE Trans. Circuits Syst. II-Analog Digit. Signal Process.
PD AUG
PY 1998
VL 45
IS 8
BP 1106
EP 1112
DI 10.1109/82.718820
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA 118BE
UT WOS:000075817000018
ER
PT J
AU Kim, WH
Hu, YH
Nguyen, TQ
AF Kim, WH
Hu, YH
Nguyen, TQ
TI Wavelet-based image coder with entropy-constrained lattice vector
quantizer (ECLVQ)
SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
LA English
DT Article
DE entropy coding; image coding; lattice vector quantization; wavelet
ID COMPRESSION; UNIFORM
AB This paper presents an algorithm that jointly optimizes a lattice vector quantizer (LVQ) and an entropy coder in a subband coding at all ranges of bit rate. Estimation formulas for both entropy and distortion of lattice quantized subband images are derived. From these estimates, we then develop dynamic algorithm optimizing the LVQ and entropy coder together for a given entropy rate. Compared to previously reported min-max approaches, or approaches using asymptotic distortion bounds, the approach reported here quickly designs a highly accurate optimal entropy-constrained LVQ, The corresponding wavelet-based image coder also has better coding performance compared to other subband coders that use entropy-constrained LVQ, especially at low bit rates.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA.
RP Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 20
TC 2
Z9 2
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 1549-7747
EI 1558-3791
J9 IEEE T CIRCUITS-II
JI IEEE Trans. Circuits Syst. II-Express Briefs
PD AUG
PY 1998
VL 45
IS 8
BP 1015
EP 1030
DI 10.1109/82.718810
PG 16
WC Engineering, Electrical & Electronic
SC Engineering
GA 118BE
UT WOS:000075817000008
ER
PT J
AU Calvet, D
Hubbard, R
Huet, M
Le Du, P
Mandjavidze, I
Thooris, B
Blair, R
Dawson, J
Schlereth, J
Abolins, M
Owen, D
Ermoline, Y
AF Calvet, D
Hubbard, R
Huet, M
Le Du, P
Mandjavidze, I
Thooris, B
Blair, R
Dawson, J
Schlereth, J
Abolins, M
Owen, D
Ermoline, Y
TI Operation and performance of an ATM based demonstrator for the
sequential option of the ATLAS trigger
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 10th IEEE Conference on Real Time
CY SEP 22-26, 1997
CL BEAUNE, FRANCE
SP IEEE
AB This paper describes an implementation on a small scale demonstrator of the sequential option for the ATLAS trigger. This demonstrator is built around an ATM switch connecting source modules, destination processors, a supervisor and a monitor. The source modules emulate a group of detector readout buffers. We describe the hardware and software architecture of the system. We investigate the performance of the demonstrator in various configurations and with different sets of input parameters. Finally, we discuss the scaling of the results to the design of a large trigger system for ATLAS.
C1 CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France.
Argonne Natl Lab, Argonne, IL 60439 USA.
Michigan State Univ, E Lansing, MI 48824 USA.
RP Calvet, D (reprint author), CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France.
NR 8
TC 3
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 USA
SN 0018-9499
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD AUG
PY 1998
VL 45
IS 4
BP 1793
EP 1797
DI 10.1109/23.710938
PN 1
PG 5
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 110VH
UT WOS:000075401500008
ER
PT J
AU Botlo, M
LeVine, MJ
Scheetz, RA
Schulz, MW
Short, P
Woods, J
Crosetto, D
AF Botlo, M
LeVine, MJ
Scheetz, RA
Schulz, MW
Short, P
Woods, J
Crosetto, D
TI The STAR cluster-finder ASIC
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 10th IEEE Conference on Real Time
CY SEP 22-26, 1997
CL BEAUNE, FRANCE
SP IEEE
AB The STAR experiment [1] reads out a TPC (Time Projection Chamber) and an SVT (Silicon Vertex Tracker), both of which require on-line pedestal subtraction, compression of ADC values from 10-bit to 8-bit, and location of time sequences representing responses to charged-particle tracks. The STAR cluster finder ASIC responds to all of;these needs. Pedestal subtraction and compression are performed using lookup tables in attached RAM. We describe the design and implementation of the ASIC, as well as testing methodology and results of tests performed on foundry methodology prototypes.
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
InnovASIC Inc, Albuquerque, NM 87107 USA.
Rice Univ, Bonner Nucl Lab, Houston, TX 77251 USA.
NR 2
TC 3
Z9 3
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 0018-9499
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD AUG
PY 1998
VL 45
IS 4
BP 1809
EP 1813
DI 10.1109/23.710941
PN 1
PG 5
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 110VH
UT WOS:000075401500011
ER
PT J
AU Bailly, P
Beigbeder, C
Bernier, R
Breton, D
Bonneaud, G
Caceres, T
Chase, R
Chauveau, J
Del Buono, L
Dohou, F
Ducorps, A
Gastaldi, F
Genat, JF
Hrisoho, A
Imbert, P
Lebbolo, H
Matricon, P
Oxoby, G
Renard, C
Roos, L
Sen, S
Thiebaux, C
Truong, K
Tocut, V
Vasileiadis, G
Va'Vra, J
Verderi, M
Warner, D
Wilson, RJ
Wormser, G
Zhang, B
Zomer, F
AF Bailly, P
Beigbeder, C
Bernier, R
Breton, D
Bonneaud, G
Caceres, T
Chase, R
Chauveau, J
Del Buono, L
Dohou, F
Ducorps, A
Gastaldi, F
Genat, JF
Hrisoho, A
Imbert, P
Lebbolo, H
Matricon, P
Oxoby, G
Renard, C
Roos, L
Sen, S
Thiebaux, C
Truong, K
Tocut, V
Vasileiadis, G
Va'Vra, J
Verderi, M
Warner, D
Wilson, RJ
Wormser, G
Zhang, B
Zomer, F
TI BaBar DIRC electronics Front-End chain.
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 10th IEEE Conference on Real Time
CY SEP 22-26, 1997
CL BEAUNE, FRANCE
SP IEEE
AB The Front-End electronics of the Detector of Internally Reflected Cerenkov light (DIRC) for the BaBar experiment is presented. Its aim is to measure to better than Ins the arrival time of Cerenkov photoelectrons, detected in a 11,000 phototubes array and their amplitude spectra. It mainly comprises 64-channel DIRC: Front-End Boards (DFB) equipped with eight full-custom Analog Chips performing zero-cross discrimination with 2 mV threshold and pulse shaping, four full-custom Digital TDC chips for timing measurements with 500 ps binning and a readout. logic selecting hits in the trigger window, and DIRC Crate Controller cards (DCC) serializing the data collected from up to 16 DFBs onto a 1.2 Gb/s optical link. Extensive test results of the pre-production chips will be presented, as well as system tests.
C1 Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France.
Univ Paris 07, CNRS, IN2P3, F-75252 Paris, France.
Univ Paris Sud, Lab Accelerateur Lineaire, CNRS, IN2P3, F-91405 Orsay, France.
Ecole Polytech, CNRS, IN2P3, Lab Phys Nucl & Hautes Energies, F-91128 Palaiseau, France.
Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
Colorado State Univ, Ft Collins, CO 80523 USA.
RP Bailly, P (reprint author), Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France.
NR 11
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 USA
SN 0018-9499
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD AUG
PY 1998
VL 45
IS 4
BP 1898
EP 1906
DI 10.1109/23.710959
PN 1
PG 9
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 110VH
UT WOS:000075401500029
ER
PT J
AU Ljubicic, A
Botlo, M
Heistermann, F
Jacobson, S
LeVine, MJ
Nelson, JM
Nguyen, M
Roehrig, H
Roerich, D
Schaefer, E
Schambach, JJ
Scheetz, R
Schmischke, D
Schulz, M
Sulimma, K
AF Ljubicic, A
Botlo, M
Heistermann, F
Jacobson, S
LeVine, MJ
Nelson, JM
Nguyen, M
Roehrig, H
Roerich, D
Schaefer, E
Schambach, JJ
Scheetz, R
Schmischke, D
Schulz, M
Sulimma, K
TI Design and implementation of the STAR experiment's DAQ
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 10th IEEE Conference on Real Time
CY SEP 22-26, 1997
CL BEAUNE, FRANCE
SP IEEE
AB The STAR experiment is one of the two large detectors currently being built at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, Upton, U.S.A.
The major issue of STAR's DAQ is the large amount of data that has to be processed as fast as possible. The required data rate is of the order of 90 Gbits/s which has to be processed and scaled down to about 15 MBytes/s and stored to tape or other permanent archiving media. To be able to do so the STAR DAQ uses a custom built ASIC which preprocesses the raw data for later use by a software Level 3 trigger.
The Level 3 trigger selects events to be archived depending on physics criteria based upon the particle track information extracted during Level 3 processing.
The design presented is a massively parallel multiprocessor system which consists of front end microprocessors hierarchically organized within a VME crate system. Each VME crate contains 6 custom made Receiver Boards with 3 Intel I960HD processors per board for a total of 18 processors per crate. The STAR's TPC detector uses 24 such crates and the SVT detector will use 4 crates for a total of 504 microprocessors.
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Texas, Austin, TX 78712 USA.
Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
Univ Frankfurt, D-6000 Frankfurt, Germany.
Max Planck Inst Phys, D-80805 Munich, Germany.
RP Ljubicic, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 3
TC 2
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 USA
SN 0018-9499
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD AUG
PY 1998
VL 45
IS 4
BP 1907
EP 1912
DI 10.1109/23.710960
PN 1
PG 6
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 110VH
UT WOS:000075401500030
ER
PT J
AU Berman, EF
AF Berman, EF
TI Software inspections at Fermilab - Use and experience
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 10th IEEE Conference on Real Time
CY SEP 22-26, 1997
CL BEAUNE, FRANCE
SP IEEE
AB Because of the critical nature of DA/Online software ii is important to commission software which is correct, usable, reliable and maintainable, i.e. has the highest quality possible. In order to help meet these goals Fermi National Accelerator Laboratory (Fermilab) has begun implementing a formal software inspection process. Formal Inspections are used to reduce the number of defects in software at as early a stage as possible. These Inspections, in use at a wide variety of institutions (e.g. NASA, Motorola), implement a well-defined procedure that can be used to improve the quality of many different types of deliverables. The inspection process, initially designed by Michael Fagan[1], will be described as it was developed and as it is currently implemented at Fermilab where it has been used to improve the quality of a variety of different experiment DA/Online software. Benefits of applying Inspections at many points in the software life-cycle and benefits to the people involved will be investigated. Experience with many different types of Inspections and the lessons learned about the inspection process itself will be detailed. Finally, the future of Inspections at Fermilab will be given.
C1 Fermi Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Berman, EF (reprint author), Fermi Natl Accelerator Lab, POB 500, Batavia, IL 60510 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 USA
SN 0018-9499
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD AUG
PY 1998
VL 45
IS 4
BP 1937
EP 1941
DI 10.1109/23.710967
PN 1
PG 5
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 110VH
UT WOS:000075401500037
ER
PT J
AU Patt, BE
Iwanczyk, JS
Tull, CR
Wang, NW
Tornai, MP
Hoffman, EJ
AF Patt, BE
Iwanczyk, JS
Tull, CR
Wang, NW
Tornai, MP
Hoffman, EJ
TI High resolution CsI(Tl)/Si-PIN detector development for breast imaging
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 1997 Medical Imaging Conference
CY NOV 13-15, 1997
CL ALBUQUERQUE, NM
ID TC-99M SESTAMIBI; PRONE SCINTIMAMMOGRAPHY; CARCINOMA; CANCER; MIBI;
DIAGNOSIS; ARRAYS
AB High resolution multi-element (8x8) imaging arrays with collimators, size matched to discrete CsI(TI) scintillator arrays and Si-PIN photodetector arrays (PDA's) were developed as prototypes for larger arrays far breast imaging. Photodetector pixels were each 1.5 x 1.5 mm(2) with 0.25 mm gaps. A 16-element quadrant of the detector was evaluated with a segmented CsI(TI) scintillator array (1.5x1.5x6 mm(3) segments with 0.25 mm septa) coupled to the silicon array. The scintillator thickness of 6 mm corresponds to > 85% total gamma efficiency at 140 keV. Pixel energy resolution of < 8% FWHM was obtained for Tc-99m (140 keV). Electronic noise was 41 e(-) RMS corresponding to a 3% FWHM contribution to the 140 keV photopeak Detection efficiency uniformity (+/- sigma%) measured with a Tc-99m flood source was 4.3% for a similar to 10% energy photopeak window. Spatial resolution was 1.53 mm FWHM and pitch was 1.75 mm as measured from the Co-57 (122 keV) line spread function. Signal to background was 34 and contrast ([max-min]/[max+min]) was 0.94. The energy resolution and spatial characteristics of the new imaging detector exceed those of other scintillator based imaging detectors. A camera based on this technology will allow: 1) Improved Compton scatter rejection; 2) Detector positioning in close proximity to the breast to increase signal to noise; 3) Improved spatial resolution; and 4) Improved efficiency compared to high resolution collimated gamma cameras for the anticipated compressed breast geometries.
C1 Photon Imaging Inc, Northridge, CA 91324 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Calif Los Angeles, Sch Med, Dept Mol & Med Pharmacol, Div Nucl Med & Biophys, Los Angeles, CA 90095 USA.
RP Patt, BE (reprint author), Photon Imaging Inc, 19355 Business Ctr Dr,Suite 8, Northridge, CA 91324 USA.
NR 17
TC 56
Z9 56
U1 1
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9499
J9 IEEE T NUCL SCI
JI IEEE Trans. Nucl. Sci.
PD AUG
PY 1998
VL 45
IS 4
BP 2126
EP 2131
DI 10.1109/23.708319
PN 2
PG 6
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 110VJ
UT WOS:000075401600009
ER
PT J
AU Klein, GJ
Reutter, BW
Ho, MH
Reed, JH
Huesman, RH
AF Klein, GJ
Reutter, BW
Ho, MH
Reed, JH
Huesman, RH
TI Real-time system for respiratory-cardiac gating in positron tomography
SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE
LA English
DT Article; Proceedings Paper
CT 1997 Medical Imaging Conference
CY NOV 13-15, 1997
CL ALBUQUERQUE, NM
ID COMPUTED-TOMOGRAPHY
AB A Macintosh-based signal processing system has been developed to support simultaneous respiratory and cardiac gating on the ECAT EXACT HR PET scanner. Using the Lab-View real-time software environment, the system reads analog inputs from a pneumatic respiratory bellows and an ECG monitor to compute an appropriate histogram memory location for the PET data. Respiratory state is determined by the bellows signal amplitude; cardiac state is based on the time since the last R-wave. These two states are used in a 2D lookup table to determine a combined respiratory-cardiac state. A 4-bit address encoding the selected histogram is directed from the system to the ECAT scanner, which dynamically switches the destination of tomograph events as respiratory-cardiac state changes. To test the switching efficiency of the combined Macintosh/ECAT system, a rotating emission phantom was built, Acquisitions with 25 msec states while the phantom was rotating at 240 rpm demonstrate the system could effectively stop motion at this rate, with approximately 5 msec switching time between states.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Funct Imaging, Berkeley, CA 94720 USA.
CTI Inc, Knoxville, TN 37932 USA.
RP Klein, GJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Funct Imaging, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
NR 11
TC 79
Z9 80
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 AUG
PY 1998
VL 45
IS 4
BP 2139
EP 2143
DI 10.1109/23.708323
PN 2
PG 5
WC Engineering, Electrical & Electronic; Nuclear Science & Technology
SC Engineering; Nuclear Science & Technology
GA 110VJ
UT WOS:000075401600011
ER
PT J
AU Davis, J
Deeney, C
AF Davis, J
Deeney, C
TI Z-pinch plasmas
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Editorial Material
C1 USN, Res Lab, Washington, DC 20375 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Davis, J (reprint author), USN, Res Lab, Washington, DC 20375 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 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD AUG
PY 1998
VL 26
IS 4
BP 1066
EP 1067
DI 10.1109/TPS.1998.725134
PG 2
WC Physics, Fluids & Plasmas
SC Physics
GA 125FN
UT WOS:000076226900001
ER
PT J
AU Sanford, TWL
Spielman, RB
Allshouse, GO
Chandler, GA
Fehl, DL
Stygar, WA
Struve, KW
Deeney, C
Nash, TJ
Seamen, JF
Mock, RC
Gilliland, TL
McGurn, JS
Jobe, DO
AF Sanford, TWL
Spielman, RB
Allshouse, GO
Chandler, GA
Fehl, DL
Stygar, WA
Struve, KW
Deeney, C
Nash, TJ
Seamen, JF
Mock, RC
Gilliland, TL
McGurn, JS
Jobe, DO
TI Wire number doubling in high-wire-number regime increases Z-accelerator
X-ray power
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE plasma pinch; Z-pinch
ID Z-PINCH; ARRAY
AB Doubling the number of tungsten wires from 120 to 240, keeping the mass fixed, increased the radiated X-ray power relative to the electrical power at the insulator stack of the Z accelerator by (35 +/- 15)% for 8.75- and 70-mm radii Z-pinch wire arrays. One-dimensional radiation magneto hydrodynamic calculations suggest that the arrays were operating in a quasi "plasma-shell" regime, where the plasma generated by the individual wires partially merge prior to the inward implosion of the entire array.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Sanford, TWL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM twsanfo@sandia.gov
NR 25
TC 42
Z9 44
U1 0
U2 4
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD AUG
PY 1998
VL 26
IS 4
BP 1086
EP 1093
DI 10.1109/27.725136
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 125FN
UT WOS:000076226900003
ER
PT J
AU Apruzese, JP
Thornhill, JW
Whitney, KG
Davis, J
Deeney, C
Nash, TJ
Spielman, RB
L'Eplattenier, P
LePell, PD
Failor, BH
Riordan, JC
Whitton, BA
Yadlowsky, EJ
Hazelton, RC
Moschella, JJ
AF Apruzese, JP
Thornhill, JW
Whitney, KG
Davis, J
Deeney, C
Nash, TJ
Spielman, RB
L'Eplattenier, P
LePell, PD
Failor, BH
Riordan, JC
Whitton, BA
Yadlowsky, EJ
Hazelton, RC
Moschella, JJ
TI Spectroscopic diagnosis of the temperature profile of an Al : Mg Z-pinch
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE plasma measurements; plasma pinch; spectral analysis; X-ray
measurements; X-ray production; X-ray spectroscopy
ID ALUMINUM-WIRE-ARRAY; X-RAY-EMISSION; GAS-PUFF; HIGH-POWER; PLASMAS;
IMPLOSION; RADIATION; SPECTRA; ARGON; NEON
AB We consider the question of how the temperature profile of a Z-pinch plasma can be determined and/or constrained by the requirement that its observed ii-shell spectrum be replicated. As a case study we employ spatially integrated, time-resolved K-shell data obtained from the implosion of 30-wire Al:Mg alloy arrays on the Saturn driver at Sandia National Laboratories. Given the measured pinch size, its K-shell power and line intensities are compared with the predictions of a collisional-radiative-equilibrium plasma model whose temperature profile is varied in seeking agreement with the data. The Al data rules out a large range of possible temperature profiles, but two quite different temperature distributions can both match the measurements. These are: a uniform temperature, or, one with a sharply dropping temperature near the pinch outer edge. However, the measured ratio of the Mg a resonance lines to those of Al, even though time-integrated, excludes the possibility of a uniform temperature distribution.
C1 USN, Res Lab, Div Plasma Phys, Radiat Hydrodynam Branch, Washington, DC 20375 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
Maxwell Phys Int, San Leandro, CA 94577 USA.
HY Tech Res Corp, Radford, VA 24141 USA.
RP Apruzese, JP (reprint author), USN, Res Lab, Div Plasma Phys, Radiat Hydrodynam Branch, Washington, DC 20375 USA.
EM davisj@ppdu.nrl.navy.mil
NR 21
TC 12
Z9 14
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD AUG
PY 1998
VL 26
IS 4
BP 1185
EP 1191
DI 10.1109/27.725149
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 125FN
UT WOS:000076226900016
ER
PT J
AU Davis, J
Clark, RW
Giuliani, JL
Thornhill, JW
Deeney, C
AF Davis, J
Clark, RW
Giuliani, JL
Thornhill, JW
Deeney, C
TI Radiative characteristics of pulsed power driven Z-pinch aluminum
plasmas
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE magnetohydrodynamics; pulse power systems; X-ray spectroscopy
ID WIRE-ARRAY
AB In this paper, we study the dynamics of a massive aluminum Z-pinch plasma load and evaluate its performance as a soft X-ray radiator. A radiation hydrodynamic model self-consistently driven by a circuit describes the dynamics, Comparisons are made for the K- and L-shell soft X-ray emission as a function of the ionization dynamic model. The ionization dynamic models are represented by: 1) a time-dependent nonequilibrium (NEQ) model, 2) a collisional radiative equilibrium (CRE) model, and 3) a local thermodynamic equilibrium (LTE) model. For all three scenarios the radiation is treated 1) in the free streaming optically thin approximation where the plasma is treated as a volume emitter and 2) in the optically thick regime where the opacity for the lines and continuum is self-consistently calculated online and the radiation is transported through the plasma. Each simulation is carried out independently to determine the sensitivity of the implosion dynamics to the ionization and radiation model, i.e., how the ionization dynamic model affects the radiative yield and emission spectra, Results are presented for the L- and K-shell radiation yields and emission spectra as a function of photon energy from 10 eV to 10 keV, Also, departure coefficients from LTE are presented for selected levels and ionization stages.
C1 USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Davis, J (reprint author), USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA.
NR 12
TC 1
Z9 1
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD AUG
PY 1998
VL 26
IS 4
BP 1192
EP 1201
DI 10.1109/27.725150
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 125FN
UT WOS:000076226900017
ER
PT J
AU Vizir, A
Oks, EM
Brown, IG
AF Vizir, A
Oks, EM
Brown, IG
TI Ion beam formation under unusual conditions
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE beam formation; ion beams; ion implantation; ion sources; plasma
immersion; surface modification
ID IMPLANTATION; DEPOSITION
AB We point out that energetic ion beams can be produced from a plasma-based ion source using a conventional multi-electrode extractor system to form the ion beam, or by using,a less conventional approach in which a single grid (wire mesh) is used and the beam is formed across the high voltage sheath formed there. There are requirements on the mesh size with respect to the plasma density (the sheath must be large compared to the mesh dimension) in order for energetic ion beam to be formed. When this condition is not met it is possible for the configuration to behave in a "plasma-immersion mode," and although the system does not then form an energetic ion beam, ion implantation can, under some circumstances, nevertheless be brought about by another coincidental mechanism.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Russian Acad Sci, Inst High Current Elect, Tomsk 634050, Russia.
State Univ Control Syst & Radioelect, Tomsk 634050, Russia.
RP Vizir, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM ibrown@lbl.gov
RI Oks, Efim/A-9409-2014; Vizir, Alexey/R-2139-2016
OI Oks, Efim/0000-0002-9323-0686; Vizir, Alexey/0000-0002-9563-8650
NR 18
TC 2
Z9 2
U1 1
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA
SN 0093-3813
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD AUG
PY 1998
VL 26
IS 4
BP 1353
EP 1356
DI 10.1109/27.725169
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 125FN
UT WOS:000076226900036
ER
PT J
AU Key, T
Lai, JS
AF Key, T
Lai, JS
TI Analysis of harmonic mitigation methods for building wiring systems
SO IEEE TRANSACTIONS ON POWER SYSTEMS
LA English
DT Article
AB There is a growing number of available harmonic mitigation methods. Selection of the best suited method for a particular case can be a complicated decision making process. The difficulty normally arises from not knowing how a particular technology and design will perform in a specific non-sinusoidal system. This paper looks at seven harmonic mitigation methods and compares their compensation characteristics as applied to building wiring systems. Both passive and active mitigation methods are considered far harmonics generated by single-phase equipment. The performance is studied through computer simulation with detailed source and associated rectifier load interfaces in the model.
C1 Power Elect Applicat Ctr, Knoxville, TN 37901 USA.
Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Power Elect Applicat Ctr, Knoxville, TN 37901 USA.
OI Lai, Jihsheng/0000-0003-2315-8460
NR 9
TC 14
Z9 14
U1 0
U2 0
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0885-8950
EI 1558-0679
J9 IEEE T POWER SYST
JI IEEE Trans. Power Syst.
PD AUG
PY 1998
VL 13
IS 3
BP 890
EP 897
DI 10.1109/59.708772
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA 105GM
UT WOS:000075064400026
ER
PT J
AU Porcelli, SA
Segelke, BW
Sugita, M
Wilson, IA
Brenner, MB
AF Porcelli, SA
Segelke, BW
Sugita, M
Wilson, IA
Brenner, MB
TI The CD1 family of lipid antigen-presenting molecules
SO IMMUNOLOGY TODAY
LA English
DT Review
ID T-CELLS; HISTOCOMPATIBILITY ANTIGEN; CRYSTAL-STRUCTURE; LANGERHANS
CELLS; LYMPHOCYTES-T; BINDING-SITE; MOUSE CD1; COMPLEX; EXPRESSION;
RECEPTOR
AB The paradigm that T cells recognize peptide antigens presented by major histocompatibility complex class I and class II molecules has been a guiding principle in the development of immunology. Here, Steven Porcelli and colleagues review studies that extend this paradigm by showing that CD1 proteins are a separate lineage of antigen-presenting molecules with unusually hydrophobic ligand-binding grooves that present nonpeptide lipid and glycolipid antigens to T cells.
C1 Brigham & Womens Hosp, Div Rheumatol Allergy & Immunol, Boston, MA 02115 USA.
Harvard Univ, Sch Med, Boston, MA 02115 USA.
Univ Calif Lawrence Livermore Natl Lab, Dept Macromol Crystallog, Livermore, CA 94551 USA.
Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA.
Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA.
RP Porcelli, SA (reprint author), Brigham & Womens Hosp, Div Rheumatol Allergy & Immunol, 75 Francis St, Boston, MA 02115 USA.
FU NCI NIH HHS [CA58896]; NIAID NIH HHS [AI28973, AI40135]
NR 60
TC 109
Z9 112
U1 0
U2 3
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0167-5699
J9 IMMUNOL TODAY
JI Immunol. Today
PD AUG
PY 1998
VL 19
IS 8
BP 362
EP 368
DI 10.1016/S0167-5699(98)01289-4
PG 7
WC Immunology
SC Immunology
GA 107MQ
UT WOS:000075213400006
PM 9709504
ER
PT J
AU Pal, AA
Sau, TK
Pal, T
Vo-Dinh, T
AF Pal, AA
Sau, TK
Pal, T
Vo-Dinh, T
TI A new fluorescence method for the determination of ammonia
SO INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL
THEORETICAL & ANALYTICAL CHEMISTRY
LA English
DT Article
AB A new method is described for the determination of ammonia by exploiting the change in fluorescence intensity of the ethanolic solution of salicylaldehyde with the addition of trace amounts of aqueous ammonia solution. The method is simple, sensitive and accurate.
C1 Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India.
Oak Ridge Natl Lab, Div Hlth & Safety Res, Oak Ridge, TN 37831 USA.
RP Pal, T (reprint author), Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India.
NR 4
TC 1
Z9 1
U1 1
U2 2
PU NATL INST SCIENCE COMMUNICATION
PI NEW DELHI
PA DR K S KRISHNAN MARG, NEW DELHI 110 012, INDIA
SN 0376-4710
J9 INDIAN J CHEM A
JI Indian J. Chem. Sect A-Inorg. Bio-Inorg. Phys. Theor. Anal. Chem.
PD AUG
PY 1998
VL 37
IS 8
BP 753
EP 754
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 143XY
UT WOS:000077283900020
ER
PT J
AU Sethi, V
Clark, RM
AF Sethi, V
Clark, RM
TI Cost estimation models for drinking water treatment unit processes
SO INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES
LA English
DT Article
AB Cost models for unit processes typically utilized in a conventional water treatment plant and in package treatment plant technology are compiled in this paper. The cost curves are represented as a function of specified design parameters and are categorized into four major categories : construction, maintenance materials, energy and labour. The cost curves sire developed so that cost indices may be used to update cost estimates from the base year. These models can be used to assist in making decisions;related to construction of new water treatment facilities or modification of existing water treatment processes to meet drinking water standards or provide improved water quality. They can also be used as a part of sophisticated economic evaluation such as the calculation of cost to benefit ratios.
C1 US EPA, Oak Ridge Inst Sci & Educ, Natl Risk Management Res Lab, Cincinnati, OH 45268 USA.
RP Clark, RM (reprint author), US EPA, Water Supply & Water Resources Div, Natl Risk Management Res Lab, MS 689,26 W Martin Luther King Dr, Cincinnati, OH 45268 USA.
NR 8
TC 1
Z9 1
U1 0
U2 5
PU NATL INST SCIENCE COMMUNICATION
PI NEW DELHI
PA DR K S KRISHNAN MARG, NEW DELHI 110 012, INDIA
SN 0971-4588
J9 INDIAN J ENG MATER S
JI Indian J. Eng. Mat. Sci.
PD AUG
PY 1998
VL 5
IS 4
BP 223
EP 235
PG 13
WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 134QT
UT WOS:000076754600012
ER
PT J
AU Husson, SM
King, CJ
AF Husson, SM
King, CJ
TI Regeneration of lactic and succinic acid-laden basic sorbents by
leaching with a volatile base in an organic solvent
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article
ID CARBOXYLIC-ACIDS; AMINE EXTRACTANTS; AQUEOUS-SOLUTION; ACETIC-ACID;
FERMENTATION; EQUILIBRIA; RECOVERY
AB Leaching with an organic solution of a volatile base was explored as a method of regenerating tertiary amine and pyridyl sorbents. Experimental data are presented that show that regeneration efficiency correlates with the nonaqueous basicity of the regenerant as measured by the Gutmann donicity scale. Essentially complete regeneration of lactic acid-laden Dowex MWA-1 was achieved when 8-10 mol of trimethylamine were present for every mole of adsorbed acid; adequate (>70% regeneration was obtained at a 2:1 molar ratio. The; resulting trimethylamine-lactic acid complex can be thermally decomposed fully when trimethylamine is employed in an organic solvent instead of in water. A likely cause of the incomplete thermal decomposition of trimethylammonium lactate in previous, water-based systems is the aqueous environment in which the decomposition was performed.
C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP King, CJ (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
EM smhnogut@uclink2.berkeley.edu
NR 33
TC 14
Z9 14
U1 1
U2 8
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD AUG
PY 1998
VL 37
IS 8
BP 2996
EP 3005
DI 10.1021/ie970775p
PG 10
WC Engineering, Chemical
SC Engineering
GA 107MU
UT WOS:000075213700013
ER
PT J
AU Chialvo, AA
Cummings, PT
Simonson, JM
Mesmer, RE
Cochran, HD
AF Chialvo, AA
Cummings, PT
Simonson, JM
Mesmer, RE
Cochran, HD
TI Interplay between molecular simulation and neutron scattering in
developing new insights into the structure of water
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article
ID SUPERCRITICAL WATER; LIQUID WATER; X-RAY; DIFFRACTION; TEMPERATURES;
25-DEGREES-C; PRESSURE; AMBIENT; MODEL
AB For three decades, molecular models for water, nature's most important liquid, have been developed and refined by fitting to structure measured by neutron scattering. The decade-old widely accepted structure of water at room temperature and pressure was recently revised as a byproduct of attempts to understand the structure of high-temperature/high-pressure water for which, in a remarkable reversal of roles, molecular models successfully pinpointed inaccuracies in scattering data. Subsequent improvements in analyzing scattering data have led to reevaluation of water structure at normal conditions. This remarkable interplay between molecular modeling and experiment suggests molecular methods can effectively complement scattering experiments.
C1 Univ Tennessee, Dept Chem Engn, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA.
RP Cummings, PT (reprint author), Univ Tennessee, Dept Chem Engn, 419 Dougherty Engn Bldg, Knoxville, TN 37996 USA.
RI Cummings, Peter/B-8762-2013;
OI Cummings, Peter/0000-0002-9766-2216; Chialvo, Ariel/0000-0002-6091-4563
NR 35
TC 28
Z9 30
U1 0
U2 4
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD AUG
PY 1998
VL 37
IS 8
BP 3021
EP 3025
DI 10.1021/ie970903+
PG 5
WC Engineering, Chemical
SC Engineering
GA 107MU
UT WOS:000075213700016
ER
PT J
AU Adler, TC
McLarnon, FR
Cairns, EJ
AF Adler, TC
McLarnon, FR
Cairns, EJ
TI Investigations of a new family of alkaline-fluoride-carbonate
electrolytes for zinc/nickel oxide cells
SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
LA English
DT Article
ID ZINC-SOLUBILITY ELECTROLYTES; PERFORMANCE
AB A new family of reduced-alkalinity electrolytes containing fluoride and carbonate anions significantly extends the cycle-life performance of zinc/nickel oxide cells. Various compositions of this family of electrolytes, with a range of KOH concentrations from 2 to 6.9 M, were characterized for zinc/nickel oxide cell cycle-life and power performance, and their conductivities were measured for a range of operating temperatures. The optimum composition for this type of electrolyte based on these criteria was determined to be 3.2-4.5 M KOH with 2 M KF, 2 M K2CO3, 0.5 M, LiF (suspension), and saturated ZnO. The cycle-life performance for 1.4Ah sealed cells with the optimum electrolytes is 425-460 cycles to 80% of initial capacity, compared to 75-100 cycles for the conventional highly alkaline electrolyte, 6.8 M:1 M KOH-LiOH, saturated ZnO, a factor of 5 improvement.
C1 Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
RP McLarnon, FR (reprint author), Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Environm Energy Technol Div, MSB 90-1142,1 Cyclotron Rd, Berkeley, CA 94720 USA.
RI Cairns, Elton/E-8873-2012
OI Cairns, Elton/0000-0002-1179-7591
NR 15
TC 2
Z9 2
U1 0
U2 3
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0888-5885
J9 IND ENG CHEM RES
JI Ind. Eng. Chem. Res.
PD AUG
PY 1998
VL 37
IS 8
BP 3237
EP 3241
DI 10.1021/ie9800694
PG 5
WC Engineering, Chemical
SC Engineering
GA 107MU
UT WOS:000075213700041
ER
PT J
AU Takasugi, T
Liu, CT
Heatherly, L
Lee, EH
George, EP
AF Takasugi, T
Liu, CT
Heatherly, L
Lee, EH
George, EP
TI Boron contaminations and their kinetics in Ni-3(Si,Ti) alloys
SO INTERMETALLICS
LA English
DT Article
DE silicides; various; diffusion; interstitial content; control; grain
boundaries; structure; electron microprobe
ID GRAIN-BOUNDARY SEGREGATION; ENVIRONMENTAL EMBRITTLEMENT; FRACTURE;
NI3AL; DUCTILITY
AB The sources of boron contamination in Ni-3(Si,Ti) alloys originally prepared as boron-free alloys in two different places were determined using an Auger instrument. Based on the correlation between the detected grain boundary compositions and the adopted processings, the cross-annealings with boron-doped alloys and annealings in a previously boron-contaminated furnace were identified as the possible sources of the boron contamination. Also, a simulation of the boron contamination where a boron-free Ni-3(Si,Ti) alloy was cross-annealed in vacuum with a boron-doped Ni-3(Si,Ti) alloy was performed. The boron penetration from the alloy surface was measured, and the corresponding diffusion coefficient of boron was estimated. Based on the obtained results, some implications are discussed. (C) 1998 Published by Elsevier Science Limited. All rights reserved.
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 98077, Japan.
RP Takasugi, T (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA.
RI George, Easo/L-5434-2014;
OI Liu, Chain Tsuan/0000-0001-7888-9725
NR 15
TC 3
Z9 4
U1 0
U2 3
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0966-9795
J9 INTERMETALLICS
JI Intermetallics
PD AUG
PY 1998
VL 6
IS 5
BP 369
EP 377
DI 10.1016/S0966-9795(97)00083-6
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &
Metallurgical Engineering
SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
GA ZU793
UT WOS:000074235500004
ER
PT J
AU Beyerlein, IJ
Phoenix, SL
Raj, R
AF Beyerlein, IJ
Phoenix, SL
Raj, R
TI Time evolution of stress redistribution around multiple fiber breaks in
a composite with viscous and viscoelastic matrices
SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
LA English
DT Article
ID CREEP-RUPTURE; MICROCOMPOSITES; SUSPENSION; STATISTICS; FRACTURE;
CERAMICS; LIFETIME; FAILURE; DAMAGE; MODEL
AB We develop an efficient computational technique, called viscous break interaction (VBI), to determine the time evolution of fiber and matrix stresses around a large, arbitrary array of ber breaks in a unidirectional composite with a matrix that creeps. The matrix is assumed to be linearly viscoelastic or viscous in shear following a power-law in time (creep exponent 0 less than or equal to alpha less than or equal to 1), and interface debonding or slip is not permitted. Such a law is applicable to polymeric matrices over a wide range of temperatures or to a viscous, glassy interphase in a ceramic composite with elongated microstructure. Specifically, we consider an infinitely large, 2-D composite lamina in the shear-lag framework of Hedgepeth, and the multiple break formulation is built on weighted superposition using influence functions based on the response to an isolated break. We apply the method to problems involving large transverse cracks (i.e., aligned, contiguous breaks), fully bridged cracks, and arrays of interacting, longitudinally staggered breaks. In each case we calculate the time evolution of stress concentrations and displacements of individual fibers. In comparing cracks vs spatially staggered breaks, the results reveal interesting contrasts in the time variation of both peak fiber stress concentrations and break opening displacements. In the latter case, we see behavior consistent with the three stages of creep, and show how the local fiber tensile stresses can rise (and subsequently even fall) at rates depending on various microstructural length scales. The motivation for developing VBI is to provide the computational framework for modeling the statistical features of the lifetime of composites in creep-rupture resulting from an accumulation of many fiber breaks and ultimately localization and collapse. (C) 1998 Elsevier Science Ltd. All rights reserved.
C1 Cornell Univ, Dept Theoret & Appl Mech, Ithaca, NY 14853 USA.
Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA.
RP Beyerlein, IJ (reprint author), Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Mail Stop G755, Los Alamos, NM 87545 USA.
RI Beyerlein, Irene/A-4676-2011;
OI RAJ, RISHI/0000-0001-8556-9797
NR 42
TC 44
Z9 44
U1 2
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0020-7683
J9 INT J SOLIDS STRUCT
JI Int. J. Solids Struct.
PD AUG
PY 1998
VL 35
IS 24
BP 3177
EP 3211
DI 10.1016/S0020-7683(98)00010-9
PG 35
WC Mechanics
SC Mechanics
GA ZR786
UT WOS:000074013600003
ER
PT J
AU Vasco, DW
AF Vasco, DW
TI Regularization and trade-off associated with nonlinear geophysical
inverse problems: penalty homotopies
SO INVERSE PROBLEMS
LA English
DT Article
ID MORSE LEMMA; GRAVITY; NEVADA; SINGULARITY; TOMOGRAPHY; EQUATIONS;
MODELS; TIMES
AB The presence of local extrema complicates the construction of trade-off curves for nonlinear geophysical inverse problems. Techniques based on path-following or operator homotopies are of use in determining trade-off and in estimating how to weight regularization penalty terms. A homotopy approach has several advantages over linearization about a particular solution. First, it is non-local in the sense that the solution can change significantly as the regularization is varied. Second, nearby distinct local minima can often be found by following branches from the primary homotopy path. The homotopy method tracks a single extremum as the regularization weight is varied. Therefore, it produces a smooth trade-off curve, something that is difficult to accomplish by repeated minimization with different regularization parameters. The homotopy approach is used to invert a set of seismic first arrival times for near-surface velocity structure near Yucca Mountain, Nevada. A trade-off curve of travel time misfit versus model norm is monotonic and provides :In estimate of regularization weighting. The velocity model contains two low-velocity zones which correlate with known fault intersections.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Ctr Computat Seismol, Berkeley, CA 94720 USA.
RP Vasco, DW (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Ctr Computat Seismol, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
RI Vasco, Donald/I-3167-2016
OI Vasco, Donald/0000-0003-1210-8628
NR 64
TC 12
Z9 14
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0266-5611
J9 INVERSE PROBL
JI Inverse Probl.
PD AUG
PY 1998
VL 14
IS 4
BP 1033
EP 1052
DI 10.1088/0266-5611/14/4/018
PG 20
WC Mathematics, Applied; Physics, Mathematical
SC Mathematics; Physics
GA 113LE
UT WOS:000075551800018
ER
PT J
AU McGraw, R
Nemesure, S
Schwartz, SE
AF McGraw, R
Nemesure, S
Schwartz, SE
TI Properties and evolution of aerosols with size distributions having
identical moments
SO JOURNAL OF AEROSOL SCIENCE
LA English
DT Article
ID NUCLEATION; GROWTH; CONDENSATION
AB It has been proposed that the properties and evolution of an aerosol can be represented by lower-order moments of its size distribution without requiring additional knowledge of the distribution itself. However, certain distributions, including the log-normal and modified gamma distributions widely used to represent aerosol size distributions, belong to classes of multiple distributions having identical sets of moments, a situation that brings into question the utility of moment-based representations of aerosol properties and dynamics. We compare aerosol properties and evolution for explicit dissimilar test distributions having identical moments. It is found that despite their dissimilarity (e.g. multimode vs single mode) these distributions exhibit virtually identical physical and optical properties and dynamics. This analysis allays the concern regarding applicability of moment-based representations of aerosol properties that arises out of the existence of sets of distributions exhibiting identical moments. Published by Elsevier Science Ltd.
C1 Brookhaven Natl Lab, Dept Appl Sci, Environm Chem Div, Upton, NY 11973 USA.
RP McGraw, R (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Environm Chem Div, Upton, NY 11973 USA.
RI Schwartz, Stephen/C-2729-2008
OI Schwartz, Stephen/0000-0001-6288-310X
NR 33
TC 54
Z9 54
U1 0
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0021-8502
J9 J AEROSOL SCI
JI J. Aerosol. Sci.
PD AUG
PY 1998
VL 29
IS 7
BP 761
EP 772
DI 10.1016/S0021-8502(97)10029-5
PG 12
WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences;
Meteorology & Atmospheric Sciences
SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric
Sciences
GA ZU008
UT WOS:000074152000001
ER
PT J
AU Taylor, RE
Charles, WC
Southon, JR
AF Taylor, RE
Charles, WC
Southon, JR
TI Identification of age anomalous components of food commodities by
radiocarbon (C-14) analyses
SO JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
LA English
DT Article
DE radiocarbon; carbon isotopes; orange juice; component age
ID ATMOSPHERIC C-14; CO2
AB "Post-maximum-bomb'' C-14 activities (1964 to the present) provide a natural isotopic signature to obtain information on biomass source age in contemporary food preparations. An analysis of the C-14 content in frozen orange juice-containing products purchased in 1996 suggested, in one case, an inferred growth period between 1992 and 1994 for oranges used in the preparation of this commodity. In another case, the C-14 analysis indicated an inferred average growth period of 1988-90 for the organics in a "frozen concentrated enriched citrus beverage". The presence of significant amounts of chemical additives obtained or synthesized from fossil carbon sources can also be documented by measuring C-14 content.
C1 Univ Calif Riverside, Inst Geophys & Planetary Phys, Dept Anthropol, Radiocarbon Lab, Riverside, CA 92521 USA.
Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA.
Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA.
RP Taylor, RE (reprint author), Univ Calif Riverside, Inst Geophys & Planetary Phys, Dept Anthropol, Radiocarbon Lab, Riverside, CA 92521 USA.
NR 24
TC 0
Z9 0
U1 0
U2 1
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0021-8561
J9 J AGR FOOD CHEM
JI J. Agric. Food Chem.
PD AUG
PY 1998
VL 46
IS 8
BP 3150
EP 3152
DI 10.1021/jf971035u
PG 3
WC Agriculture, Multidisciplinary; Chemistry, Applied; Food Science &
Technology
SC Agriculture; Chemistry; Food Science & Technology
GA 112DD
UT WOS:000075478100040
ER
PT J
AU Whitacre, JF
Rek, ZU
Bilello, JC
Yalisove, SM
AF Whitacre, JF
Rek, ZU
Bilello, JC
Yalisove, SM
TI Surface roughness and in-plane texturing in sputtered thin films
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID COLUMNAR MICROSTRUCTURE; ANGULAR-DISTRIBUTION; X-RAY; DEPOSITION;
MULTILAYERS; GROWTH; MODEL
AB Real surfaces are not flat on an atomic scale, Studying the effects of roughness on microstructural evolution is of relevance because films are sputtered onto nonideal surfaces in many applications. To this end, amorphous rough substrates of two different morphologies, either elongated mounds or facets, were fabricated. The microstructural development of films deposited onto these surfaces was examined. In particular, the development of a preferred crystallographic orientation in the plane of growth in 400 nm thick Mo films grown on the rough substrates was studied using scanning electron microscopy, transmission electron diffraction, and high resolution x-ray diffraction (using phi scans in the symmetric grazing incidence x-ray scattering geometry with a synchrotron light source). It was found that the degree of texturing was dependent upon the type of roughness and its orientation during deposition. By limiting the average oblique angle of incident adatom flux, rough surfaces slowed the development of in-plane texture. Comparison between experimental data and theoretical predictions showed that a recent analytical model is able to reasonably predict the degree of texturing in films grown onto these surfaces, (C) 1998 American Institute of Physics.
C1 Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA.
RP Whitacre, JF (reprint author), Univ Michigan, Dept Mat Sci & Engn, 2300 Hayward St, Ann Arbor, MI 48109 USA.
NR 14
TC 20
Z9 20
U1 0
U2 10
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD AUG 1
PY 1998
VL 84
IS 3
BP 1346
EP 1353
DI 10.1063/1.368204
PG 8
WC Physics, Applied
SC Physics
GA 108YT
UT WOS:000075294600029
ER
PT J
AU Kazimirov, A
Scherb, G
Zegenhagen, J
Lee, TL
Bedzyk, MJ
Kelly, MK
Angerer, H
Ambacher, O
AF Kazimirov, A
Scherb, G
Zegenhagen, J
Lee, TL
Bedzyk, MJ
Kelly, MK
Angerer, H
Ambacher, O
TI Polarity determination of a GaN thin film on sapphire (0001) with x-ray
standing waves
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID CRYSTALLOGRAPHIC POLARITY; ELECTRON-DIFFRACTION; CDTE CRYSTALS
AB The x-ray standing wave technique was used to determine the polarity of a 1 mu m thick GaN film grown by molecular beam epitaxy on an alpha-Al2O3(0001) single crystal. The standing wave was generated by x-ray diffraction from the GaN film, The Ga K-alpha fluorescence yield was recorded as a function of incidence angle within the range of the GaN(0002) reflection. Analysis of the data reveals that the film has grown with N polarity, i.e., the nitrogen atoms occupy the top half of the wurtzite (0001) bilayers. (C) 1998 American Institute of Physics.
C1 Northwestern Univ, Argonne, IL 60439 USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
Tech Univ Munchen, Walter Schottky Inst, D-85747 Garching, Germany.
Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
RP Zegenhagen, J (reprint author), Northwestern Univ, Dept Mat Sci, Evanston, IL 60208 USA.
RI Bedzyk, Michael/B-7503-2009; Bedzyk, Michael/K-6903-2013
NR 21
TC 36
Z9 37
U1 1
U2 7
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD AUG 1
PY 1998
VL 84
IS 3
BP 1703
EP 1705
DI 10.1063/1.368240
PG 3
WC Physics, Applied
SC Physics
GA 108YT
UT WOS:000075294600086
ER
PT J
AU Payne, JW
Bolton, H
Campbell, JA
Xun, LY
AF Payne, JW
Bolton, H
Campbell, JA
Xun, LY
TI Purification and characterization of EDTA monooxygenase from the
EDTA-degrading bacterium BNC1
SO JOURNAL OF BACTERIOLOGY
LA English
DT Article
ID PHOTOCHEMICAL DEGRADATION; NATURAL-WATERS; ETHYLENEDIAMINETETRAACETATE;
NITRILOTRIACETATE; ATCC-29600; SEDIMENTS; COMPLEXES; METALS; ACIDS
AB The synthetic chelating agent EDTA can mobilize radionuclides and heavy metals in the environment. Biodegradation of EDTA should reduce this mobilization. Although several bacteria have been reported to mineralize EDTA, little is known about the biochemistry of EDTA degradation. Understanding the biochemistry will facilitate the removal of EDTA from the environment. EDTA-degrading activities were detected in cell extracts of bacterium BNC1 when flavin mononucleotide (FMN), NADH, and O-2 were present. The degradative enzyme system was separated into two different enzymes, EDTA monooxygenase and an FMN reductase, EDTA monooxygenase oxidized EDTA to glyoxylate and ethylenediaminetriacetate (ED3A), with the coconsumption of FMNH2 and O-2. The FMN reductase provided EDTA monooxygenase with FMNH2 by reducing FMN with NADH, The FMN reductase was successfully substituted in the assay mixture by other FMN reductases. EDTA monooxygenase was purified to greater than 95% homogeneity and had a single polypeptide with a molecular weight of 45,000, The enzyme oxidized both EDTA complexed with various metal ions and uncomplexed EDTA, The optimal conditions for activity were pH 7.8 and 35 degrees C. K(m)s were 34.1 mu M for uncomplexed EDTA and 8.5 mu M for MgEDTA(2-); this difference in K-m indicates that the enzyme has greater affinity for MgEDTA(2-). The enzyme also catalyzed the release of glyoxylate from nitrilotriacetate and diethylenetriaminepentaacetate. EDTA monooxygenase belongs to a small group of FMNH2-utilizing monooxygenases that attack carbon-nitrogen, carbon-sulfur, and carbon-carbon double bonds.
C1 Washington State Univ, Dept Microbiol, Pullman, WA 99164 USA.
Pacific NW Natl Lab, Environm Microbiol Grp, Richland, WA 99352 USA.
Pacific NW Natl Lab, Adv Organ Analyt Methods Grp, Richland, WA 99352 USA.
RP Xun, LY (reprint author), Washington State Univ, Dept Microbiol, Pullman, WA 99163 USA.
EM xun@mail.wsu.edu
RI Bolton, Harvey/E-5583-2011
NR 40
TC 36
Z9 36
U1 1
U2 6
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 USA
SN 0021-9193
J9 J BACTERIOL
JI J. Bacteriol.
PD AUG
PY 1998
VL 180
IS 15
BP 3823
EP 3827
PG 5
WC Microbiology
SC Microbiology
GA 105YY
UT WOS:000075104000014
PM 9683478
ER
PT J
AU Zhu, JS
Kong, RQ
Wolk, CP
AF Zhu, JS
Kong, RQ
Wolk, CP
TI Regulation of hepA of Anabaena sp. strain PCC 7120 by elements 5 ' from
the gene and by hepK
SO JOURNAL OF BACTERIOLOGY
LA English
DT Article
ID BROAD-HOST-RANGE; CYANOBACTERIUM ANABAENA; HETEROCYST DEVELOPMENT;
ESCHERICHIA-COLI; CLONING VECTORS; CELL-ENVELOPE; PCC-7120; DNA;
EXPRESSION; PROTEIN
AB In Anabaena spp., synthesis of the heterocyst envelope polysaccharide, required if the cell is to fix dinitrogen under aerobic conditions, is dependent on the gene hepA. A transcriptional start site of hepA was localized 104 bp 5' from its translational initiation codon. A 765-bp open reading frame, denoted hepC, was found farther upstream. Inactivation of hepC led to constitutive expression of hepA and prevented the synthesis of heterocyst envelope polysaccharide. However, the glycolipid layer of the heterocyst envelope was synthesized. A hepK mutation blocked both the synthesis of the heterocyst envelope polysaccharide and induction of hepA. The predicted product of hepK resembles a sensory protein-histidine kinase of a two-component regulatory system. Analysis of the region between hepC and hepA indicated that DNA sequences required for the induction of hepA upon nitrogen deprivation are present between bp -574 and -440 and between bp -340 and -169 relative to the transcriptional start site of hepA, Gel mobility shift assays provided evidence that one or more proteins bind specifically to the latter sequence. The Fox box sequence downstream from hepA appeared inessential for the induction of hepA.
C1 Michigan State Univ, Plant Res Lab, MSU DOE, E Lansing, MI 48824 USA.
RP Wolk, CP (reprint author), Michigan State Univ, Plant Res Lab, MSU DOE, E Lansing, MI 48824 USA.
EM wolk@pilot.msu.edu
NR 61
TC 44
Z9 46
U1 1
U2 3
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 USA
SN 0021-9193
J9 J BACTERIOL
JI J. Bacteriol.
PD AUG
PY 1998
VL 180
IS 16
BP 4233
EP 4242
PG 10
WC Microbiology
SC Microbiology
GA 109NH
UT WOS:000075328400030
PM 9696774
ER
PT J
AU Musgrave, KB
Liu, HI
Ma, L
Burgess, BK
Watt, G
Hedman, B
Hodgson, KO
AF Musgrave, KB
Liu, HI
Ma, L
Burgess, BK
Watt, G
Hedman, B
Hodgson, KO
TI EXAFS studies on the P(N) and P(OX) states of the P-clusters in
nitrogenase
SO JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
LA English
DT Article
DE nitrogenase; P-clusters; redox; EXAFS; XAS
ID X-RAY-ABSORPTION; MOLYBDENUM-IRON PROTEIN; BODY DISTRIBUTION-FUNCTIONS;
MOFE-PROTEIN; AZOTOBACTER-VINELANDII; CLOSTRIDIUM-PASTEURIANUM;
KLEBSIELLA-PNEUMONIAE; CONDENSED MATTER; FEMO-COFACTOR; MOSSBAUER
AB The MoFe protein of nitrogenase is an alpha(2)beta(2) tetramer that contains two each of two different types of metal centers, the FeMo-cofactor and the P-clusters. The function of the P-clusters is believed to be to accept electrons from the Fe protein of nitrogenase and to donate them to the FeMo-cofactor, We have studied the P-clusters of Azotobacter vinelandii nitrogenase in both the P(N) and p(OX): states utilizing Fe it-edge X-ray absorption spectroscopy. Since the MoFe holoprotein contains the seven iron FeMo-cofactor centers in addition to P-clusters, we have utilized a FeMo-cofactor-deficient MoFe protein synthesized by the Delta nif H strain DJ54. That MoFe protein is an alpha(2)beta(2) tetramer that contains P-clusters by the criteria of metal analysis, CD spectroscopy. cluster extrusion, and electrochemical reduction of the POX state. Several important results have emerged from our XAS studies. The first shell Fe-S coordination shows the same average Fe-S distance (2.26 Angstrom) in both stales. The second coordination shells could only be well fit using two different Fe-Fe contributions. In both states, short Fe-Fe components with ;distances of 2.57 Angstrom and 2.42 Angstrom for the P(N) and P(OX) stares, respectively, were required to complement longer 2.75 Angstrom and 2.70 Angstrom distances. Understanding of the P-cluster structure is essential if we are to make advances in understanding the role of the P-clusters and their participation in electron transfer through the nitrogenase system.
C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
Univ Calif Irvine, Dept Mol Biol & Biochem, Irvine, CA 92717 USA.
Brigham Young Univ, Dept Chem, Provo, UT 84602 USA.
Stanford Univ, Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA.
RP Hodgson, KO (reprint author), Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
EM hodgson@ssrl.slac.stanford.edu
NR 41
TC 14
Z9 14
U1 2
U2 9
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0949-8257
J9 J BIOL INORG CHEM
JI J. Biol. Inorg. Chem.
PD AUG
PY 1998
VL 3
IS 4
BP 344
EP 352
DI 10.1007/s007750050243
PG 9
WC Biochemistry & Molecular Biology; Chemistry, Inorganic & Nuclear
SC Biochemistry & Molecular Biology; Chemistry
GA 114DB
UT WOS:000075592900002
ER
PT J
AU Edwards, C
Tung, CS
Silks, LA
Gatewood, JM
Fee, JA
Mariappan, SVS
AF Edwards, C
Tung, CS
Silks, LA
Gatewood, JM
Fee, JA
Mariappan, SVS
TI Probing site-specific interactions in Protein-DNA complexes using
heteronuclear NMR spectroscopy and molecular modeling: Binding of Cro
repressor to OR3
SO JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
LA English
DT Article
ID SEQUENCE-SPECIFIC RECOGNITION; LAMBDA-CRO; OPERATOR DNA; ACID;
ASSIGNMENT
AB In this paper, a general method is developed to study site-specific interactions in DNA-protein complexes using heteronuclear NMR spectroscopy and molecular modeling. This method involves two steps: (a) homonuclear H-1 NMR and molecular modeling are used to develop a low resolution model and (b) (15)N7-guanosine containing oligonucleotides are employed to probe the specific intermolecular interactions predicted in(a). This method is applied to Cro-operator complex due to its small size and extensive prior characterization. Non-exchangeable and exchangeable base protons have been assigned by nuclear Overhauser effect spectroscopy (NOESY) and chemical shift correlation spectroscopy. Extensive line-broadening has been observed in the H-1 NMR spectra of the operator DNA in the presence of protein. Differential line-broadening observed in the imino proton region and the comparison of NOESY spectra in the presence and absence of Cro protein show that guanosine-12 and guanosine-14 are involved in the Cro-DNA interaction, while the three A.T base-pairs at the 3'- and 5'-termini play only a minor role in the binding. A model of the Cro-operator DNA complex has been constructed by docking helix-3 of the Cro protein in the major groove and it predicted specific hydrogen bonds between N7 of guanosines-12 and -14 and the side-chain of Lys-32 and Ser-28, respectively. The appearance of a new resonance in the temperature dependent proton detected heteronuclear multiple quantum coherence (HMQC) spectra of the Cro-DNA complex also demonstrates a specific interaction of Cro with guanosine-14 of the operator DNA.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Calif San Diego, Dept Biol, La Jolla, CA 92037 USA.
RP Mariappan, SVS (reprint author), Univ Calif Los Alamos Natl Lab, LS-8,MS M880, Los Alamos, NM 87545 USA.
NR 23
TC 3
Z9 3
U1 0
U2 1
PU ADENINE PRESS INC
PI GUILDERLAND
PA PO BOX 355/340, GUILDERLAND, NY 12084 USA
SN 0739-1102
J9 J BIOMOL STRUCT DYN
JI J. Biomol. Struct. Dyn.
PD AUG
PY 1998
VL 16
IS 1
BP 13
EP 20
PG 8
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 116HJ
UT WOS:000075718400002
PM 9745890
ER
PT J
AU Bernholdt, DE
Harrison, RJ
AF Bernholdt, DE
Harrison, RJ
TI Fitting basis sets for the RI-MP2 approximate second-order many-body
perturbation theory method
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID GAUSSIAN-BASIS SETS; CORRELATED MOLECULAR CALCULATIONS;
ELECTRONIC-STRUCTURE CALCULATIONS; DENSITY-FUNCTIONAL CALCULATIONS;
LINEAR-COMBINATION; ORBITAL METHODS; INTEGRALS; BORON; DISTRIBUTIONS;
ENERGIES
AB The "resolution of the identity" integral approximation applied to second-order many-body perturbation theory, or RI-MP2, method offers improved computational performance compared to traditional (exact) second-order perturbation theory calculations, but introduces a new auxiliary or "fitting basis set" into the method. We develop fitting-basis sets for use with the correlation consistent cc-pVDZ and cc-pVTZ atomic orbital basis sets for the atoms H-Ne. These fitting sets are designed to reproduce exact second-order results for a set of 32 test cases, including a variety of reaction energies, weak interactions, and electrostatic properties, to better than 1% error averaged across all tests and less than 2% error in any individual case. Although the RI-MP2 method is primarily targeted to large-scale calculations, it offers substantial performance improvements even for the small molecules used in these test cases. (C) 1998 American Institute of Physics.
C1 Syracuse Univ, NE Parallel Architectures Ctr, Syracuse, NY 13244 USA.
Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Bernholdt, DE (reprint author), Syracuse Univ, NE Parallel Architectures Ctr, 111 Coll Pl, Syracuse, NY 13244 USA.
EM bernhold@npac.syr.edu; rj_harrison@pnl.gov
NR 32
TC 41
Z9 41
U1 0
U2 1
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 1
PY 1998
VL 109
IS 5
BP 1593
EP 1600
DI 10.1063/1.476732
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 105HH
UT WOS:000075066300002
ER
PT J
AU Greeff, CW
Lester, WA
AF Greeff, CW
Lester, WA
TI A soft Hartree-Fock pseudopotential for carbon with application to
quantum Monte Carlo
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID RELATIVISTIC EFFECTIVE POTENTIALS; BASIS-SETS; WAVE-FUNCTIONS; 1ST-ROW;
ATOMS
AB We describe the development of an ab initio Hartree-Fock (HF) pseudopotential for C that has neither repulsive r(-2) nor attractive Coulomb singularities at the nucleus. This potential is tested: in HF calculations on small hydrocarbons and shown to give good accuracy in comparison to all-electron calculations. The new pseudopotential is demonstrated to give superior basis;set convergence in HF calculations compared to standard ones with r(-2) singularities. Diffusion Monte Carlo (DMC) calculations on C and CH with the new potential show substantial improvements in stability at larger time steps compared with conventional pseudopotentials, with negligible time Step dependence of the total energy. The resultant CH bond energy, D-e = 83.3(4) kcal/mol, is in good agreement with experiment and with a similar all-electron DMC calculation. (C) 1998 American Institute of Physics.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Greeff, CW (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Greeff, Carl/N-3267-2013;
OI Greeff, Carl/0000-0003-0529-0441
NR 27
TC 57
Z9 57
U1 0
U2 1
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 1
PY 1998
VL 109
IS 5
BP 1607
EP 1612
DI 10.1063/1.476734
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 105HH
UT WOS:000075066300004
ER
PT J
AU Cheung, YS
Huang, JC
Ng, CY
AF Cheung, YS
Huang, JC
Ng, CY
TI Vacuum ultraviolet laser pulsed field ionization photoelectron studies
of polyatomic species: Accurate ionization energies of CH3SH and
CH3CH2SH
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID RESOLUTION
AB The vacuum ultraviolet (WV) pulsed field ionization photoelectron (PFI-PE) spectra for CH3SH and CH3CH2SH have been obtained near their ionization thresholds. Using a semiempirical simulation scheme, we have obtained satisfactory fits to fine structures resolved in the VUV-PFI-PE spectra, yielding accurate ionization energies of 76 256.3 +/- 2.9 cm(-1) (9.45458 +/- 0.00036 eV) and 74948.7 +/- 2.9 cm(-1)(9.29246 +/- 0.00036 eV) for CH3SH and CH3CH2SH respectively. (C) 1998 American Institute of Physics.
C1 Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Ng, CY (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA.
NR 29
TC 12
Z9 13
U1 0
U2 0
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 1
PY 1998
VL 109
IS 5
BP 1781
EP 1786
DI 10.1063/1.476753
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 105HH
UT WOS:000075066300026
ER
PT J
AU Corrales, LR
Keefer, KD
AF Corrales, LR
Keefer, KD
TI Solubility limits of silicate melts (vol 106, pg 6460, 1997)
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Correction
C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Corrales, LR (reprint author), Pacific NW Lab, Environm Mol Sci Lab, POB 999, Richland, WA 99352 USA.
NR 1
TC 1
Z9 1
U1 0
U2 0
PU AMER INST PHYSICS
PI WOODBURY
PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999
USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD AUG 1
PY 1998
VL 109
IS 5
BP 2044
EP 2044
DI 10.1063/1.476781
PG 1
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 105HH
UT WOS:000075066300057
ER
PT J
AU Dobbyn, AJ
Knowles, PJ
Harrison, RJ
AF Dobbyn, AJ
Knowles, PJ
Harrison, RJ
TI Parallel internally contracted multireference configuration interaction
SO JOURNAL OF COMPUTATIONAL CHEMISTRY
LA English
DT Article; Proceedings Paper
CT HPCI Conference
CY JAN, 1998
CL UNIV MANCHESTER INST SCI & TECHNOL, MANCHESTER, ENGLAND
HO UNIV MANCHESTER INST SCI & TECHNOL
DE configuration interaction; parallel computation; quantum chemistry;
electronic structure; electron correlation
ID COMPUTATIONAL CHEMISTRY; SCF METHOD; COMPUTERS
AB A parallel implementation of the internally contracted (IC) multireference configuration (MRCI) module of the MOLPRO quantum chemistry program is described. The global array (GA) toolkit has been used in order to map an existing disk-paging small-memory algorithm onto a massively parallel supercomputer, where disk storage is replaced by the combined memory of all processors. This model has enabled a rather complicated code to be ported to the parallel environment without the need for the wholesale redesign of algorithms and data structures. Examples show that the parallel ICMRCI program can deliver results in a fraction of the time needed for equivalent uncontracted MRCI computations. Further examples demonstrate that ICMRCI computations with up to 10(7) variational parameters, and equivalent to uncontracted MRCI with 10(9) configurations, are feasible. The largest calculation demonstrates a parallel efficiency of about 80% on 128 nodes of a Gray T3E-300. (C) 1998 John Wiley & Sons, Inc.
C1 Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England.
SERC, Daresbury Lab, Dept Computat & Informat, Warrington WA4 4AD, Cheshire, England.
Pacific NW Lab, Richland, WA 99352 USA.
RP Knowles, PJ (reprint author), Univ Birmingham, Sch Chem, POB 363, Birmingham B15 2TT, W Midlands, England.
RI Knowles, Peter/G-2985-2010
OI Knowles, Peter/0000-0003-4657-6331
NR 22
TC 22
Z9 23
U1 0
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0192-8651
EI 1096-987X
J9 J COMPUT CHEM
JI J. Comput. Chem.
PD AUG
PY 1998
VL 19
IS 11
BP 1215
EP 1228
DI 10.1002/(SICI)1096-987X(199808)19:11<1215::AID-JCC2>3.0.CO;2-N
PG 14
WC Chemistry, Multidisciplinary
SC Chemistry
GA 104KC
UT WOS:000075012600002
ER
PT J
AU Tanaka, T
Rek, ZU
Wong, J
Rowen, M
AF Tanaka, T
Rek, ZU
Wong, J
Rowen, M
TI FZ crystal growth of monochromator-grade YB66 single crystals as guided
by topographic and double-crystal diffraction characterization
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article
DE YB66; soft X-ray monochromator; floating zone growth; X-ray diffraction
characterization
ID X-RAY MONOCHROMATOR; SYNCHROTRON-RADIATION; BORON; ZONE
AB YB66 crystals grown with an indirect heating floating zone method were extensively characterized using a variety of X-ray diffraction techniques such as synchrotron white beam transmission and reflection topography, section topography and conventional double-crystal rocking curve measurements using Cu K-alpha and Mg K-alpha sources. The observed crystal defects and deformations were correlated with changes in the crystal growth process. The interplay beween systematic characterization and process improvements results in the growth of high quality single crystals of YB66 that can be used as an efficient element for monochromatization of synchrotron soft X-ray in the 1-2 keV energy range. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Natl Inst Res Inorgan Mat, Ibaraki 3050044, Japan.
Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Tanaka, T (reprint author), Natl Inst Res Inorgan Mat, Ibaraki 3050044, Japan.
NR 18
TC 11
Z9 11
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD AUG
PY 1998
VL 192
IS 1-2
BP 141
EP 151
DI 10.1016/S0022-0248(98)00400-X
PG 11
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 115WG
UT WOS:000075688900021
ER
PT J
AU Marone, PA
Thiyagarajan, P
Wagner, AM
Tiede, DM
AF Marone, PA
Thiyagarajan, P
Wagner, AM
Tiede, DM
TI The association state of a detergent-solubilized membrane protein
measured during crystal nucleation and growth by small-angle neutron
scattering
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article
DE small-angle neutron scattering; reaction center; membrane protein;
crystallization
ID DYNAMIC LIGHT-SCATTERING; PHOTOSYNTHETIC REACTION CENTER; SUPERSATURATED
LYSOZYME SOLUTIONS; X-RAY-SCATTERING; RHODOBACTER-SPHAEROIDES;
RHODOPSEUDOMONAS-SPHAEROIDES; BIOLOGICAL STRUCTURES; CRYSTALLIZATION;
COMPLEX; CRYSTALLOGENESIS
AB Reaction centers (RCs) from Rhodobacter sphaeroides R-26 were used as a model for membrane protein macromolecular organization and crystallization. Small-angle neutron-scattering measurements were made during pre-saturation, nucleation, and crystal growth phases of crystallization, using polyethylene glycol, PEG, as the precipitant, and with fully deuterated reaction center protein. Solution (H2O)-H-2/(H2O)-H-1 ratios were adjusted to match the average scattering length density of the detergent, and allow the scattering from the deuterated reaction center to be selectively detected within the detergent and PEG containing mixtures. Neutron-scattering profiles for the detergent-solubilized reaction center in PEG-containing solutions were found not to deviate detectably from that expected for mono-dispersed, noninteracting particles. Analysis of the scattering in terms of discrete aggregates suggests that the reaction center exists predominately in the monomeric form throughout the crystallization process. The absence of detectable (< 5%) accumulation of small, soluble aggregates entering into the supersaturated state suggests that the initial crystal nuclei must be kinetically transient, thermodynamically unstable intermediates, and that a reaction center monomer is most likely to serve as the crystal growth unit. These results contrast markedly with analogous neutron scattering studies of lysozyme. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Argonne Natl Lab, Chem Div D200, Argonne, IL 60439 USA.
Argonne Natl Lab, Intense Pulse Neutron Source, Argonne, IL 60439 USA.
RP Argonne Natl Lab, Chem Div D200, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM tiede@anlchm.chm.anl.gov
NR 53
TC 10
Z9 10
U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
EI 1873-5002
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD AUG
PY 1998
VL 191
IS 4
BP 811
EP 819
PG 9
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 115WE
UT WOS:000075688600031
ER
PT J
AU Jones, RH
Sharitz, RR
AF Jones, RH
Sharitz, RR
TI Survival and growth of woody plant seedlings in the understorey of
floodplain forests in South Carolina
SO JOURNAL OF ECOLOGY
LA English
DT Article
DE advanced regeneration; forested wetlands; log-logistic function;
mortality; seedling populations; succession; survival; understorey
ID RAIN-FOREST; TROPICAL FORESTS; RECRUITMENT PATTERNS; HARDWOOD SEEDLINGS;
SHADE TOLERANCE; ACER-SACCHARUM; LIFE-HISTORY; GAPS; DYNAMICS; LIGHT
AB 1 Survival and height growth of permanently tagged understorey seedlings in four river floodplain forests in South Carolina were monitored for 8 years. Regression models were used to determine if a common survival pattern emerged and if the pattern varied according to species, spatial location, time, seedling size and seedling growth.
2 For most of the populations, per capita survival was initially poor but increased steadily with age. A few populations, however, had relatively high survival rates for 1-3 years after establishment, or brief periods (1-2 years) with much lower survival. Although the underlying survival function was best described by a negative power curve, a log-logistic model also fit the data and provided more versatility for fitting individual populations.
3 Significant differences in general survival pattern were found among species, sites (forests), years of establishment (cohorts), and all two-way interactions of species, site and cohort. Species differences were large. Spikes in mortality for individual species and cohorts were synchronized within sites and to a lesser degree among sites. In some sites, weak relationships were noted between mortality and peak river discharge during summer (negatively correlated) and winter (positively correlated).
4 Species differed strongly in their initial height, but effects of cohort and site on height were also significant as were all two-way interactions of species, site and cohort. During the 8 years of this study, very few seedlings grew taller than 30 cm. For most species, taller seedlings had greater per capita survival. Height growth, however, was not consistently related to survival. Since mean size of survivors changed little with time, age may be a better variable than size to use in models of survival.
5 Simulation models could probably be developed using a log-logistic function that includes (in order of importance): seedling age, species, intensity of winter floods (some sites) and occurrence of summer droughts (some sites).
C1 Virginia Polytech Inst & State Univ, Dept Biol, Blacksburg, VA 24061 USA.
Univ Georgia, Dept Bot, Athens, GA 30602 USA.
Savannah River Ecol Lab, Aiken, SC 29802 USA.
RP Jones, RH (reprint author), Virginia Polytech Inst & State Univ, Dept Biol, Blacksburg, VA 24061 USA.
NR 65
TC 44
Z9 46
U1 1
U2 12
PU BLACKWELL SCIENCE LTD
PI OXFORD
PA P O BOX 88, OSNEY MEAD, OXFORD OX2 0NE, OXON, ENGLAND
SN 0022-0477
J9 J ECOL
JI J. Ecol.
PD AUG
PY 1998
VL 86
IS 4
BP 574
EP 587
DI 10.1046/j.1365-2745.1998.00287.x
PG 14
WC Plant Sciences; Ecology
SC Plant Sciences; Environmental Sciences & Ecology
GA 115ZB
UT WOS:000075695300003
ER
PT J
AU Ma, B
Balachandran, U
AF Ma, B
Balachandran, U
TI Transport properties of the mixed-conducting SrFe1.2Co0.3Ox
SO JOURNAL OF ELECTROCERAMICS
LA English
DT Article
DE mixed-conductor; oxygen permeation; diffusivity; ceramic membrane;
Sr-Fe-Co oxide
ID CHEMICAL DIFFUSION-COEFFICIENT; ELECTRICAL-CONDUCTIVITY; SRFECO0.5OX
AB Single phase SrFe1.2Co0.3Ox, sample with layered crystal structure was prepared using a solid state reaction method, Electrical conductivity and apparent oxygen diffusion coefficients of the SrFe1.2Co0.2Ox sample were measured as functions of temperature in atmospheres of various oxygen partial pressures (P-O2). Total and ionic conductivities were determined by using the conventional four-probe and electron blocking four-probe methods, respectively. The apparent oxygen diffusion coefficient was derived from the time-dependent conductivity relaxation data of the reequilibrium process after abruptly changing the Po, in the surrounding atmosphere. Several atmospheres of different Po, were established by the use of premixed gas cylinders. The conductivity of SrFe1.2Co0.3Ox increases with increasing temperature and P-O2. At 900 degrees C in air, the total conductivity and ionic conductivity are 10 and 8 S.cm(-2), respectively. The ionic transference number (approximate to 0.8 in air) does not have strong temperature dependence. The activation energy increases with decreasing Pg?, In air, the activation energy has a low value of approximate to 0.37 eV, The apparent oxygen diffusion coefficient was approximate to 2 x 10(-6) cm(2).s(-1) at 950 degrees C over a wide range of P-O2 (1 less than or equal to P-O2 less than or equal to 10(-18) atm).
C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA.
RP Ma, B (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Ma, Beihai/I-1674-2013
OI Ma, Beihai/0000-0003-3557-2773
NR 21
TC 10
Z9 10
U1 0
U2 2
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 1385-3449
J9 J ELECTROCERAM
JI J. Electroceram.
PD AUG
PY 1998
VL 2
IS 2
BP 135
EP 142
DI 10.1023/A:1009939309781
PG 8
WC Materials Science, Ceramics
SC Materials Science
GA 125UB
UT WOS:000076254500008
ER
PT J
AU Beevers, L
Raikhel, NV
AF Beevers, L
Raikhel, NV
TI Transport to the vacuole: receptors and trans elements
SO JOURNAL OF EXPERIMENTAL BOTANY
LA English
DT Article
DE clathrin coated vesicles; protein trafficking; receptors; secretory
pathway; SNAREs; vesicles
ID CLATHRIN-COATED VESICLES; GTP-BINDING PROTEINS; PISUM-SATIVUM-L;
ARABIDOPSIS-THALIANA; SORTING RECEPTOR; TOBACCO CELLS;
SACCHAROMYCES-CEREVISIAE; ENDOPLASMIC-RETICULUM; VESICULAR TRANSPORT;
TARGETING RECEPTOR
AB Most proteins that are synthesized on membrane-bound ribosomes are transported through the Golgi and reach the trans-Golgi network to be sorted for delivery to various cellular destinations, including the vacuole. Sorting involves a recognition of proteins by receptors and the assembly of cytosol-oriented coat structures that package cargo into vesicles. Vesicle trafficking is regulated by specific membrane-bound and soluble proteins. Several components of the secretory machinery have recently been identified in plants and are described in this review. Ongoing and future research will characterize features of the secretory pathway specific to plants which, because of the multiplicity of vacuole types, provide a more complex paradigm than the better described mammalian and yeast systems.
C1 Michigan State Univ, US DOE, Plant Res Lab, E Lansing, MI 48824 USA.
RP Raikhel, NV (reprint author), Michigan State Univ, US DOE, Plant Res Lab, E Lansing, MI 48824 USA.
NR 82
TC 10
Z9 12
U1 1
U2 2
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0022-0957
J9 J EXP BOT
JI J. Exp. Bot.
PD AUG
PY 1998
VL 49
IS 325
BP 1271
EP 1279
DI 10.1093/jexbot/49.325.1271
PG 9
WC Plant Sciences
SC Plant Sciences
GA 110YJ
UT WOS:000075408900002
ER
PT J
AU Ulibarri, CA
AF Ulibarri, CA
TI Is after-hours trading informative?
SO JOURNAL OF FUTURES MARKETS
LA English
DT Article
ID VOLUME; MARKETS
C1 Pacific NW Lab, Richland, WA 99352 USA.
RP Ulibarri, CA (reprint author), Pacific NW Lab, MS K8-11,POB 999,Battelle Blvd, Richland, WA 99352 USA.
NR 19
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 USA
SN 0270-7314
J9 J FUTURES MARKETS
JI J. Futures Mark.
PD AUG
PY 1998
VL 18
IS 5
BP 563
EP 579
DI 10.1002/(SICI)1096-9934(199808)18:5<563::AID-FUT4>3.0.CO;2-0
PG 17
WC Business, Finance
SC Business & Economics
GA ZX014
UT WOS:000074471600004
ER
PT J
AU Lui, ATY
Williams, DJ
McEntire, RW
Ohtani, S
Zanetti, LJ
Bristow, WA
Greenwald, RA
Newell, PT
Christon, SP
Mukai, T
Tsuruda, K
Yamamoto, T
Kokubun, S
Matsumoto, H
Kojima, H
Murata, T
Fairfield, DH
Lepping, RP
Samson, JC
Rostoker, G
Reeves, GD
Rodger, AL
Singer, HJ
AF Lui, ATY
Williams, DJ
McEntire, RW
Ohtani, S
Zanetti, LJ
Bristow, WA
Greenwald, RA
Newell, PT
Christon, SP
Mukai, T
Tsuruda, K
Yamamoto, T
Kokubun, S
Matsumoto, H
Kojima, H
Murata, T
Fairfield, DH
Lepping, RP
Samson, JC
Rostoker, G
Reeves, GD
Rodger, AL
Singer, HJ
TI Multipoint study of a substorm on February 9, 1995
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID PLASMA SHEET; MAGNETOSPHERE; FLOWS; WIND
AB An extended interval of strong northward interplanetary magnetic field (IMF) was observed by the Wind spacecraft located at an upstream distance of similar to 193 R-E from February 8-10, 1995, with a brief break of southward IMF from 0200 to 0400 UT on February 9. This brief interval of southward IMF led to an isolated substorm of moderate intensity (similar to 500 nT) with expansion phase starting at similar to 0431 UT. This substorm may be triggered by the northward turning of the IMF since its onset time matched well with the time expected for the arrival of the northward turning of the IMF at Earth. The substorm activities were monitored by 11 spacecraft in space (Wind, IMP 8, Geotail, six geosynchronous satellites, one DMSP satellite, and Freja) and two networks of ground stations (Canopus and SuperDARN) covering both the northern and southern hemispheres. The extensive coverage of this event provides us with results (1) showing some unusual characteristics possibly related to the isolated nature of the substorm and (2) revealing some surprising features difficult to reconcile with the traditional substorm model. In the first category is unusually long duration of the growth phase and the long time delay between substorm expansion onset and particle injection onset at the geosynchronous orbit. In the second category is new evidence for multiple particle acceleration sites during substorm expansion and for sunward flow during the late expansion phase of a substorm being unrelated to a single acceleration site (X line) moving from the near-Earth tail to the more distant tail. We also present observations which show the possible optical signature on the ground of bursty bulk flows in the magnetotail.
C1 Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
Univ Maryland, Dept Phys & Astron, College Pk, MD 20742 USA.
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
Inst Space & Astronaut Sci, Kanagawa 229, Japan.
Nagoya Univ, Solar Terr Environm Lab, Aichi 442, Japan.
Kyoto Univ, Radio Atmospher Sci Ctr, Kyoto, Japan.
Univ Alberta, Dept Phys, Edmonton, AB T6G 2M7, Canada.
Los Alamos Natl Lab, Los Alamos, NM USA.
British Antarctic Survey, Cambridge CB3 0ET, England.
NOAA, Space Environm Ctr, Boulder, CO 80303 USA.
RP Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD 20723 USA.
RI Reeves, Geoffrey/E-8101-2011; Ohtani, Shinichi/E-3914-2016
OI Reeves, Geoffrey/0000-0002-7985-8098; Ohtani,
Shinichi/0000-0002-9565-6840
NR 28
TC 11
Z9 11
U1 0
U2 0
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-9380
EI 2169-9402
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD AUG 1
PY 1998
VL 103
IS A8
BP 17333
EP 17343
DI 10.1029/97JA02632
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 107BV
UT WOS:000075186700011
ER
PT J
AU Reeves, GD
Friedel, RHW
Belian, RD
Meier, MM
Henderson, MG
Onsager, T
Singer, HJ
Baker, DN
Li, X
Blake, JB
AF Reeves, GD
Friedel, RHW
Belian, RD
Meier, MM
Henderson, MG
Onsager, T
Singer, HJ
Baker, DN
Li, X
Blake, JB
TI The relativistic electron response at geosynchronous orbit during the
January 1997 magnetic storm
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
AB The first geomagnetic storm of 1997 began on January 10. It is of particular interest because it was exceptionally well observed by the full complement of International Solar Terrestrial Physics (ISTP) satellites and because of its possible association with the catastrophic failure of the Telstar 401 telecommunications satellite. Here we report on the energetic electron environment observed by five geosynchronous satellites. In part one of this paper we examine the magnetospheric response to the magnetic cloud. The interval of southward IMF drove strong substorm activity while the interval of northward IMF and high solar wind density strongly compressed the magnetosphere. At energies above a few hundred keV, two distinct electron enhancements were observed at geosynchronous orbit. The first enhancement began and ended suddenly, lasted for approximately 1 day, and is associated with the strong compression of the magnetosphere. The second enhancement showed a more characteristic time delay, peaking on January 15. Both enhancements may be due to transport of electrons from the same initial acceleration event at a location inside geosynchronous orbit but the first enhancement was due to a temporary, quasi-adiabatic transport associated with the compression of the magnetosphere while the second enhancement was due to slower diffusive processes. In the second part of the paper we compare the relativistic electron fluxes measured simultaneously at different local times. We find that the >2-MeV electron fluxes increased first at noon followed by dusk and the? dawn and that there can be difference of two orders of magnitude in the fluxes observed at different local times. Finally, we discuss the development of data-driven models of the relativistic electron belts for space weather applications. By interpolating fluxes between satellites we produced a model that gives the >2-MeV electron fluxes at all local times as a function of universal time. In a first application of this model we show that, at least in this case, magnetopause shadowing does not contribute noticeably to relativistic electron dropouts.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80302 USA.
Aerosp Corp, Los Angeles, CA 90009 USA.
NOAA, Space Environm Ctr, Boulder, CO 80303 USA.
Max Planck Inst Aeron, Katlenburg Lindau, Germany.
RP Reeves, GD (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM reeves@lanl.gov; r.friedel@lanl.gov; rdbelian@lanl.gov; mmeier@lanl.gov;
mghenderson@lanl.gov; tonsager@sec.noaa.gov; hsinger@sec.noaa.gov;
baker@orion.colorado.edu; lix@kitron.colorado.edu;
blake@dirac2.dnet.nasn.gov
RI Friedel, Reiner/D-1410-2012; Reeves, Geoffrey/E-8101-2011; Henderson,
Michael/A-3948-2011
OI Friedel, Reiner/0000-0002-5228-0281; Reeves,
Geoffrey/0000-0002-7985-8098; Henderson, Michael/0000-0003-4975-9029
NR 14
TC 89
Z9 90
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0148-0227
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD AUG 1
PY 1998
VL 103
IS A8
BP 17559
EP 17570
DI 10.1029/97JA03236
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 107BV
UT WOS:000075186700030
ER
PT J
AU Maurice, S
Thomsen, MF
McComas, DJ
Elphic, RC
AF Maurice, S
Thomsen, MF
McComas, DJ
Elphic, RC
TI Quiet time densities of hot ions at geosynchronous orbit
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID MAGNETOSPHERIC PLASMA ANALYZER; RING CURRENT; GEOMAGNETIC STORMS;
ELECTRIC-FIELDS; MAGNETIC STORM; DYNAMICS; MODEL; COLLISIONS; PARTICLES;
SHEET
AB Densities of hot (100 eV-40 keV) ions vary with local time at geosynchronous orbit. Typically, the density is maximum near midnight, falls off toward both terminators, and is minimum near noon. This local time dependence is routinely observed in the Los Alamos geosynchronous plasma data. We use a month of these data (June 1996) and a simple model of particle drifts within the magnetosphere to explore its origins. We first show that the nightside density profile is shaped according to the drift path topology: trapped orbits are depleted, and only particles drifting on open trajectories contribute to this population, particularly Then, we highlight spectral absorption in dayside fluxes, which occurs when the particles pass through the geocorona. A model of charge exchange accounts for the shape and energy range of the absorption for observations taken at times of low K-p. signatures observed at low K-p for varying pitch angles. The density absorption computed versus local time matches the observations. Hence these basic principles of particle motion in the terrestrial magnetosphere readily explain the local time dependence of the hot ion density at geosynchronous orbit.
C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Maurice, S (reprint author), Observ Midi Pyrenees, Astrophys Lab, 14 Ave Edouard Belin, F-31400 Toulouse, France.
NR 41
TC 12
Z9 12
U1 0
U2 0
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD AUG 1
PY 1998
VL 103
IS A8
BP 17571
EP 17585
DI 10.1029/98JA00291
PG 15
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 107BV
UT WOS:000075186700031
ER
PT J
AU Borovsky, JE
Thomsen, MF
Elphic, RC
AF Borovsky, JE
Thomsen, MF
Elphic, RC
TI The driving of the plasma sheet by the solar wind
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Review
ID LATITUDE BOUNDARY-LAYER; SELF-CONSISTENT THEORY; SUPERPOSED EPOCH
ANALYSIS; VISCOELASTIC FLUID; CIRCULAR-CYLINDER; GEOMAGNETIC TAIL; ION
COMPOSITION; MAGNETIC-FIELD; STATISTICAL CHARACTERISTICS; MAGNETOSPHERIC
CONVECTION
AB The coupling of the plasma sheet to the solar wind is studied statistically using measurements from various satellite pairs: one satellite in the solar wind and one in either the magnetotail central plasma sheet or the near-Earth plasma sheet. It is found that the properties of the plasma sheet are highly correlated with the properties of the solar wind: specifically that (1) the density of the plasma sheet is strongly correlated with the density of the solar wind, (2) the temperature of the plasma sheet is strongly correlated with the velocity of the solar wind, (3) the particle pressure and total pressure of the plasma sheet are strongly correlated with the ram pressure of the solar wind, (4) B-y in the plasma sheet is strongly correlated with the B-y in the solar wind, (5) B-z in the plasma sheet is weakly correlated with the B-z in the solar wind, (6) E-y in the plasma sheet is weakly correlated with the E-y in the solar wind, and (7) plasma sheet earthward-tailward flow velocity is weakly anticorrelated with the solar wind velocity. After removing these solar wind dependencies, the dependencies of the properties of the plasma sheet on geomagnetic activity are reduced and changed. The time lags between the solar wind density and the plasma sheet density are investigated statistically and on a case-by-case basis; it is found that solar wind material reaches the midtail plasma sheet in similar to 2 hours, reaches the near-Earth nightside plasma sheet in similar to 4 hours, and reaches the dayside plasma sheet in similar to 15 hours. The pathway for mass transport into the plasma sheet is explored; it is suggested that solar wind material is transported rapidly up the tail to the near-Earth region via the plasma sheet boundary layer, followed by poloidal transport via (E) over right arrow x (B) over right arrow convection in the near-Earth (low beta) plasma sheet or followed by eddy diffusion in the not-too-distant (high beta) plasma sheet. Analogies are drawn between the high Reynolds number plasma sheet and a high Reynolds number fluid wake.
C1 Univ Calif Los Alamos Natl Lab, Space & Atmospher Sci Grp, Los Alamos, NM 87545 USA.
RP Borovsky, JE (reprint author), Univ Calif Los Alamos Natl Lab, Space & Atmospher Sci Grp, Mail Stop D466, Los Alamos, NM 87545 USA.
EM jborovsky@lanl.gov
NR 142
TC 247
Z9 249
U1 2
U2 13
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD AUG 1
PY 1998
VL 103
IS A8
BP 17617
EP 17639
DI 10.1029/97JA02986
PG 23
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 107BV
UT WOS:000075186700034
ER
PT J
AU Wilken, B
Zong, QG
Doke, T
Mukai, T
Yamamoto, T
Reeves, GD
Maezawa, K
Kokubun, S
Ullaland, S
AF Wilken, B
Zong, QG
Doke, T
Mukai, T
Yamamoto, T
Reeves, GD
Maezawa, K
Kokubun, S
Ullaland, S
TI Substorm activity on January 11, 1994: Geotail observations in the
distant tail during the leading phase of a corotating interaction region
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Article
ID MAGNETIC-FLUX ROPES; SOLAR-WIND; PLASMA SHEET; GEOMAGNETIC-ACTIVITY; ION
COMPOSITION; MAGNETOTAIL; ENHANCEMENTS; AU; SPACECRAFT; PIONEER-10
AB On January 11, 1994 an interplanetary corotating interaction region (CIR) passed the Earth's magnetosphere (final phase of solar cycle 22). Groundbased magnetometers, geosynchronous satellites, and Geotail (GSE -91, 15.5 and -3.5 R-E), in or near the plasma sheet at the dusk flank of the magnetotail, detected a series of disturbances throughout this day, which culminated in the development of an isolated substorm between 1400 and 1710 UT (event 2). Small substorm activity early in the day (event 1) produced an energetic particle population with rather normal composition (relative helium abundance 10%). The CIR-related high-speed stream started to interact with the magnetosphere at about midday, which appears to have contributed to the initiation of the major substorm at 1400 UT (event 2). A geosynchronous Los Alamos National Laboratory (LANL) satellite at 2100 LT detected a rapid flux dropout for electrons at 1400 UT followed by a transient recovery around 1500 UT. The main injection phase, which started at 1551 UT, resulted in a massive electron Aux increase. Throughout the 120-min long growth phase of this substorm the energetic particle spectrometer (HEP-LD) on board Geotail measured a rather slow flux buildup for protons and helium ions in the distant plasma sheet (PS). The azimuthal angular distributions showed only very small anisotropies in this phase. An unusual feature is the high helium abundance of 26% compared to about 10% normally found in the magnetosphere. After the onset of the electron injection at 6.6 R-E, HEP-LD observed the appearance of tailward beams of energetic protons and helium ions (relative helium abundance 26%) in the PS/plasma sheet boundary layer (PSBL) and oxygen ions in the central plasma sheet (CPS). The oxygen ions were delayed by 27 min relative to the P/He beam. Plasmoid-like structures in the magnetic field accompanied the streaming ions. The synoptic observations in the geostationary orbit and in the distant tail suggest a source location at X=-50 R-E (near-Earth neutral line (NENL)) for this substorm. Substorm-related extraction of oxygen ions from the polar ionosphere and subsequent drift to the acceleration region (NENL) can explain the observed delay for these ions. event 3, the last disturbance of the day, started at 2000 UT and lasted until 2300 UT. The proton/helium population was again broad in angular distribution and helium-rich in composition (20.7%) but the geostationary/distant tail association is less dynamic. The appearance of accelerated helium-rich energetic plasmas in event 2 and 3, confined to the plasma sheet and absent in the lobes, is most likely a result of the arrival of solar wind plasma with an enhanced helium content, which gained access to the magnetosphere shortly before or during the growth phase of the event 2 substorm. Helium-rich solar wind compositions are frequently observed in CIR events.
C1 Max Planck Inst Aeron, D-37191 Katlenburg Lindau, Germany.
Waseda Univ, Adv Res Ctr Sci & Engn, Tokyo 169, Japan.
Inst Space & Astronaut Sci, Kanagawa 229, Japan.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Nagoya Univ, Dept Phys, Nagoya, Aichi 46401, Japan.
Nagoya Univ, Solar Terr Environm Lab, Toyokawa, Aichi 442, Japan.
Univ Bergen, Dept Phys, N-5007 Bergen, Norway.
RP Wilken, B (reprint author), Max Planck Inst Aeron, D-37191 Katlenburg Lindau, Germany.
RI Reeves, Geoffrey/E-8101-2011
OI Reeves, Geoffrey/0000-0002-7985-8098
NR 42
TC 10
Z9 10
U1 0
U2 0
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD AUG 1
PY 1998
VL 103
IS A8
BP 17671
EP 17689
DI 10.1029/98JA00673
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 107BV
UT WOS:000075186700037
ER
PT J
AU Kamide, Y
Baumjohann, W
Daglis, IA
Gonzalez, WD
Grande, M
Joselyn, JA
McPherron, RL
Phillips, JL
Reeves, EGD
Rostoker, G
Sharma, AS
Singer, HJ
Tsurutani, BT
Vasyliunas, VM
AF Kamide, Y
Baumjohann, W
Daglis, IA
Gonzalez, WD
Grande, M
Joselyn, JA
McPherron, RL
Phillips, JL
Reeves, EGD
Rostoker, G
Sharma, AS
Singer, HJ
Tsurutani, BT
Vasyliunas, VM
TI Current understanding of magnetic storms: Storm-substorm relationships
SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
LA English
DT Review
ID CORONAL MASS EJECTA; GREAT GEOMAGNETIC STORMS; SOLAR-WIND; RING-CURRENT;
SEMIANNUAL VARIATION; PLASMA SHEET; CURRENT DISRUPTION; DECLINING PHASE;
FIELD LINES; MAGNETOSPHERE
AB This paper attempts to summarize the current understanding of the storm/substorm relationship by clearing up a considerable amount of controversy and by addressing the question of how solar wind energy is deposited into and is dissipated in the constituent elements that are critical to magnetospheric and ionospheric processes during magnetic storms. (1) Four mechanisms are identified and discussed as the primary causes of enhanced electric fields in the interplanetary medium responsible for geomagnetic storms. It is pointed out that in reality, these four mechanisms, which are not mutually exclusive, but interdependent, interact differently from event to event. Interplanetary coronal mass ejections (ICMEs) and corotating interaction regions (CIRs) are found to be the primary phenomena responsible for the main phase of geomagnetic storms. The other two mechanisms, i.e., HILDCAA (high-intensity, long-duration continuous auroral electrojet activity) and the so-called Russell-McPherron effect, work to make the ICME and CIR phenomena more geoeffective. The solar cycle dependence of the various sources in creating magnetic storms has yet to be quantitatively understood. (2) A serious controversy exists as to whether the successive occurrence of intense substorms plays a direct role hn the energization of ring current particles or whether the enhanced electric field associated with southward IMF enhances the effect of substorm expansions. While most of the Dst variance during magnetic storms can be solely reproduced by changes in the large-scale electric field in the solar wind and the residuals are uncorrelated with substorms, recent satellite observations of the ring current constituents during the main phase of magnetic storms show the importance of ionospheric ions. This implies that ionospheric ions, which are associated with the frequent occurrence of intense substorms, are accelerated upward along magnetic field lines, contributing to the energy density of the storm-time ring current. An apparently new controversy regarding the relative importance of the two processes is thus created. It is important to identify the role of substorm occurrence in the large-scale enhancement of magnetospheric convection driven by solar wind electric fields. (3) Numerical schemes for predicting geomagnetic activity indices on the basis of solar/solar wind/interplanetary magnetic field parameters continue to be upgraded, ensuring reliable techniques for forecasting magnetic storms under real-time conditions. There is a need to evaluate the prediction capability of geomagnetic indices on the basis of physical processes that occur during storm time substorms. (4) It is crucial to differentiate between storms and nonstorm time substorms in terms of energy transfer/conversion processes, i.e., mechanical energy from the solar wind, electromagnetic energy in the magnetotail, and again, mechanical energy of particles in the plasma sheet, ring current, and aurora. To help answer the question of the role of substorms in energizing ring current particles, it is crucial to find efficient magnetospheric processes that heat ions up to some minimal energies so that they can have an effect on the strength of the storm time ring current. (5) The question of whether the Dst index is an accurate and effective measure of the storm time ring current is also controversial. In particular, it is demonstrated that the dipolarization effect associated with substorm expansion acts to reduce the Dst magnitude, even though the ring current may still be growing.
C1 Nagoya Univ, Solar Terr Environm Lab, Toyokawa 442, Japan.
Max Planck Inst Extraterr Phys, D-85740 Garching, Germany.
Natl Observ Athens, Inst Ionospher & Space Res, Penteli 15236, Greece.
Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
Inst Pesquisas Espaciais, Sao Paulo, Brazil.
NOAA, Space Environm Ctr, Boulder, CO 80303 USA.
Univ Calif Los Angeles, Dept Geophys & Planetary Phys, Los Angeles, CA 90024 USA.
NASA, Johnson Space Flight Ctr, Houston, TX 77059 USA.
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada.
Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
Max Planck Inst Aeron, D-37189 Katlenburg Lindau, Germany.
RP Kamide, Y (reprint author), Nagoya Univ, Solar Terr Environm Lab, Toyokawa 442, Japan.
EM kamide@stelab.nagoya-u.ac.jp; bj@mpe-garching.mpg.dr;
daglis@creator.space.noa.gr; gonzalez@dge.inpe.br; M.Grande@rl.ac.uk;
jjoselyn@sec.noaa.gov; rmcpherron@igpp.ucla.edu; JLPhilli@ems.jsc.gov;
reeves@lanl.gov; rostoker@space.ualberta.ca; ssh@avl.umd.edu;
hsinger@sec.noaa.gov; btsurutani@jplsp.jpl.nasa.gov;
vasyliunas@linaxl.mpae.gwdg.de
RI Baumjohann, Wolfgang/A-1012-2010; Daglis, Ioannis/L-6100-2013; Reeves,
Geoffrey/E-8101-2011; Grande, Manuel/C-2242-2013
OI Baumjohann, Wolfgang/0000-0001-6271-0110; Daglis,
Ioannis/0000-0002-0764-3442; Reeves, Geoffrey/0000-0002-7985-8098;
Grande, Manuel/0000-0002-2233-2618
NR 153
TC 200
Z9 202
U1 3
U2 36
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
J9 J GEOPHYS RES-SPACE
JI J. Geophys. Res-Space Phys.
PD AUG 1
PY 1998
VL 103
IS A8
BP 17705
EP 17728
DI 10.1029/98JA01426
PG 24
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 107BV
UT WOS:000075186700040
ER
PT J
AU Hunter, KS
Wang, YF
Van Cappellen, P
AF Hunter, KS
Wang, YF
Van Cappellen, P
TI Kinetic modeling of microbially-driven redox chemistry of subsurface
environments: coupling transport, microbial metabolism and geochemistry
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE biodegradation kinetics; redox chemistry; reactive transport; microbial
activity; subsurface environment
ID BIODEGRADABLE ORGANIC CONTAMINANTS; MULTICOMPONENT REACTIVE TRANSPORT;
SULFATE REDUCTION; IN-SITU; MANGANESE REDUCTION; AQUITARD SEDIMENTS;
LANDFILL LEACHATE; MARINE-SEDIMENTS; AEROBIC AQUIFER; SOUTH-CAROLINA
AB This paper deals with the treatment of subsurface environments as reactive biogeochemical transport systems. We begin with an overview of the effects of microbial activity on the chemical dynamics in these environments. Then, after a review of earlier modeling efforts, we introduce a one-dimensional, multi-component reactive transport model that accounts for the reaction couplings among the major redox and acid-base elements, O, C, H, N, S, Mn, Fe and Ca. The model incorporates kinetic descriptions for the microbial degradation pathways of organic matter, as well as for the secondary redox reactions and mineral precipitation-dissolution reactions. Local equilibrium only applies to fast homogeneous speciation reactions and sorption processes.
The model is used to simulate the distributions of chemical species and reaction rates along flow paths in two subsurface environments. In the first case, waters containing moderate levels of natural soil-derived organics supply a regional groundwater system. In the second case, a pristine aquifer is contaminated by an organic-rich leachate from a landfill. In both environments, the microbial oxidation of organic matter causes the disappearance of dissolved and solid oxidants and the appearance of reduced species, albeit over very different spatial scales. In the second case, a pronounced reaction front develops at the downstream edge of the contaminant plume. The reactivity, or biodegradability, of the organic matter is shown to be a major factor governing the biogeochemical dynamics in the plume. The simulations predict different distributions of the biodegradation pathways, depending on whether the organics of the leachate have uniform or variable reactivity.
The secondary reactions also have a significant impact on the concentration profiles of inorganic species and the spatial distributions of the biodegradation pathways. Within the downstream reaction front, large fractions of O-2, Mn(IV), Fe(III) and SO42- are reduced by secondary reactions, rather than being utilized in the oxidative degradation of leachate organics, overall, the model simulations emphasize the strong coupling between subsurface heterotrophic activity and an extensive network of secondary reactions. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
Sandia Natl Labs, Carlsbad, NM 88220 USA.
RP Hunter, KS (reprint author), Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
RI Van Cappellen, Philippe/A-2906-2013
OI Van Cappellen, Philippe/0000-0001-5476-0820
NR 94
TC 199
Z9 203
U1 8
U2 100
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
J9 J HYDROL
JI J. Hydrol.
PD AUG
PY 1998
VL 209
IS 1-4
BP 53
EP 80
DI 10.1016/S0022-1694(98)00157-7
PG 28
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA 134KJ
UT WOS:000076741900004
ER
PT J
AU Johnson, JW
Knauss, KG
Glassley, WE
DeLoach, LD
Tompson, AFB
AF Johnson, JW
Knauss, KG
Glassley, WE
DeLoach, LD
Tompson, AFB
TI Reactive transport modeling of plug-flow reactor experiments: quartz and
tuff dissolution at 240 degrees C
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE reactive transport; modeling; plug-flow reactor; kinetic data; kinetic
rate law
ID SOLUTION SATURATION STATE; ALBITE-WATER SYSTEM; FELDSPAR DISSOLUTION;
PRECIPITATION KINETICS; HYDROTHERMAL SYSTEMS; PH; 25-DEGREES-C;
80-DEGREES-C; DEPENDENCE; 300-DEGREES-C
AB Extension of reactive transport modeling to predict the coupled thermal, hydrological, and chemical evolution of complex geological systems is predicated on successful application of the approach to simulate well-constrained physical experiments. In this study, steady-state effluent concentrations and dissolution/precipitation features associated with crushed quartz and tuff dissolution at 240 degrees C have been determined experimentally using a plug-flow reactor (PFR) and scanning electron microscopy (SEM) techniques, then modeled with the reactive transport simulator GIMRT (Steefel and Yabusaki, 1996) using a linear rate law from transition State theory (TST). For quartz dissolution, interdependence of the specific surface area (A(m)) and reaction rate constant (k(m)) predicted from the modeling agrees closely with that obtained from an analytical solution to the reaction-transport equation without diffusion/dispersion, verifying the advection-dominant nature of the PFR experiments. Independently-determined A(qtz) and k(qtz) from the literature are shown to be internally consistent with respect to the model and analytical interdependence, implying appropriateness of the linear TST rate law and adequacy of BET-determined A, for use in modeling PFR experiments. Applications of this integrated approach for monomineralic dissolution include assessment of internal consistency among independent A(m) and k(m) data, estimation of k(m) from BET-determined A(m), and rapid evaluation of alternative rate laws. For such dissolution, accurate simulation of the experimental steady-state effluent concentrations (to within 3% for Na, Al and K; to within 15% for Si and Ca) and dearth of alteration phases (<1 vol.% in the model) defines minimum supersaturation thresholds for nucleation of primary minerals (to suppress their secondary precipitation) and the (non-unique) relative k(m) of hydrous aluminosilicates. For such multicomponent, multiphase experiments, reactive transport simulators provide the only practical means of estimating and constraining these kinetic parameters. Despite the approximations and uncertainties inherent in present-day models, close agreement between the experimental and simulation results reported herein provides an important measure of confidence for extending the modeling approach to address increasingly complex systems for which development of experimental analogs is impractical or impossible. Published by Elsevier Science B.V.
C1 Univ Calif Lawrence Livermore Natl Lab, Geosci & Environm Technol Div, Livermore, CA 94550 USA.
RP Johnson, JW (reprint author), Univ Calif Lawrence Livermore Natl Lab, Geosci & Environm Technol Div, L-219, Livermore, CA 94550 USA.
RI knauss, kevin/K-2827-2012
NR 41
TC 27
Z9 27
U1 2
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
J9 J HYDROL
JI J. Hydrol.
PD AUG
PY 1998
VL 209
IS 1-4
BP 81
EP 111
DI 10.1016/S0022-1694(98)00159-0
PG 31
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA 134KJ
UT WOS:000076741900005
ER
PT J
AU Szecsody, JE
Zachara, JM
Chilakapati, A
Jardine, PM
Ferrency, AS
AF Szecsody, JE
Zachara, JM
Chilakapati, A
Jardine, PM
Ferrency, AS
TI Importance of flow and particle-scale heterogeneity on Co(II/III)EDTA
reactive transport
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE solute transport; mathematical models; organic compounds; radioactive
isotopes; trace metals
ID ADSORBING SOLUTE TRANSPORT; POROUS-MEDIA; IRON-OXIDE; COORDINATION
CHEMISTRY; DISSOLUTION KINETICS; SORPTIVE SOLUTE; EDTA COMPLEXES; MASS
ARRIVAL; ADSORPTION; COBALT
AB The effect of flow and particle-scale heterogeneity on the applicability of batch-derived reaction networks for Co(II/III)EDTA interaction with synthetic and natural Fe oxide-containing subsurface sediments was evaluated using batch and column systems. At pH 4.5 and 6.5, Co(II)EDTA reactions with sediments involved adsorption (within 0.2 to 2 h), followed by iron dissolution, forming Co2+ and Fe(III)EDTA (within 10 to 300 h) and oxidation, forming Co(III)EDTA (within 5 to 50 h). Reaction parameters that were based upon numerous batch experiments, in some cases, poorly described reactive transport in columns. For five sediment/pH combinations, column breakthrough could be well described with systematic change in some reaction parameters which included: slower metal-EDTA adsorption rates; a greater number of adsorption sites; slower iron dissolution; and faster oxidation. Additional simulations were used to determine the significance and uncertainty in determining these reaction parameters in the 15-reaction system with 22 species. Simulations that incorporated particle-scale heterogeneity with spatial distributions of adsorption site density, affinity, and rate could reproduce the column/batch trends that were observed, indicating that spatial averaging across reactive and nonreactive surface sites results in different single-valued reaction parameters needed to describe the column system as an equivalent porous media. The impact of solute advection and additional mass transfer in columns on accurately predicting column behavior with batch-derived parameters was not responsible for the batch to column disparity. This study demonstrates that while the nature of the reaction network (i.e. reaction identity and stoichiometry) is identical in batch and column systems, development of transport-relevant reaction parameters is needed for nonlinear reactions as particle-scale heterogeneities can significantly influence the apparent manifestation of the reaction network during advective flow. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Pacific NW Lab, Richland, WA 99352 USA.
Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Szecsody, JE (reprint author), Pacific NW Lab, POB 999, Richland, WA 99352 USA.
NR 60
TC 33
Z9 33
U1 2
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
J9 J HYDROL
JI J. Hydrol.
PD AUG
PY 1998
VL 209
IS 1-4
BP 112
EP 136
DI 10.1016/S0022-1694(98)00114-0
PG 25
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA 134KJ
UT WOS:000076741900006
ER
PT J
AU Viswanathan, HS
Robinson, BA
Valocchi, AJ
Triay, IR
AF Viswanathan, HS
Robinson, BA
Valocchi, AJ
Triay, IR
TI A reactive transport model of neptunium migration from the potential
repository at Yucca Mountain
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE unsaturated zone; geochemistry; radioactive waste disposal; Yucca
Mountain; neptunium
ID FINITE-ELEMENT METHODS; CLINOPTILOLITE; GROUNDWATER; SYSTEMS; CHLORIDE;
SOILS; FLOW
AB Characterization and performance assessment studies for the potential high-level nuclear waste repository at Yucca Mountain have identified Np-237 as a radionuclide of concern for the proposed repository. To predict the migration of neptunium after a repository breach, an understanding of the relevant hydrologic and geochemical processes is required. The hydrologic flow in the unsaturated zone at Yucca Mountain is dependent on the infiltration rate, the stratigraphy of the vadose zone, and the heat generated by the decaying radioactive waste. The geochemical processes that strongly affect Np-237 migration include: solubility-limited release of Np-237 from the near-field environment, aqueous speciation of neptunium into non-sorbing carbonate/hydroxy complexes and the sorbing NpO2+ cation, sorption of neptunium onto the zeolitic tuffs via an ion exchange mechanism, and radioactive decay. The finite element heat and mass transfer (FEHM) code was used to investigate the coupled effects of chemical interactions and heat on neptunium transport from the potential repository to the water table. The selective coupling method is introduced to solve these reactive transport problems. The simulations indicate that in the absence of irreversible changes in the hydrologic and transport properties, the heat pulse does not significantly affect the migration of neptunium, as the time scale of heat pulse propagation is shorter than the time scales associated with neptunium release and migration. Water chemistry, particularly pH, calcium, and sodium concentration significantly affect the retardation of neptunium by the zeolitic rocks between the repository and the water table. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
Univ Illinois, Dept Civil Engn, Urbana, IL 61801 USA.
Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA.
RP Robinson, BA (reprint author), Univ Calif Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
RI Robinson, Bruce/F-6031-2010
NR 65
TC 61
Z9 61
U1 2
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
J9 J HYDROL
JI J. Hydrol.
PD AUG
PY 1998
VL 209
IS 1-4
BP 251
EP 280
DI 10.1016/S0022-1694(98)00122-X
PG 30
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA 134KJ
UT WOS:000076741900013
ER
PT J
AU Luo, H
Beets, AL
McAllister, MJ
Greenbaum, M
McPherson, DW
Knapp, FFR
AF Luo, H
Beets, AL
McAllister, MJ
Greenbaum, M
McPherson, DW
Knapp, FFR
TI Resolution, in vitro and in vivo evaluation of fluorine-18-labeled
isomers of 1-azabicyclo[2.2.2]oct-3-yl
alpha-(1-fluoropent-5-yl)-alpha-hydroxy-alpha-phenylacetate (FQNPe) as
new PET candidates for the imaging of muscarinic-cholinergic receptor.
SO JOURNAL OF LABELLED COMPOUNDS & RADIOPHARMACEUTICALS
LA English
DT Article
DE muscarinic receptor; fluorine-18; 3-quinuclidinyl esters
ID ALZHEIMERS-DISEASE; HIGH-AFFINITY; 3-QUINUCLIDINYL BENZILATE; OPTICAL
ISOMERS; HUMAN BRAIN; BINDING; ACETYLCHOLINE; SUBTYPES;
ALPHA-HYDROXY-ALPHA-(1-IODO-1-PROPEN-3-YL)-ALPHA-PHENYLACETATE;
HALOPERIDOL
AB l-Azabicyclo[2.2.2]oct-3-yl alpha-(1-fluoropent-5-yl)-alpha-hydroxy-alpha-phenylacetate (FQNPe, 2), an analogue of 1-azabicyclo[2.2.2]oct-3-yl alpha,alpha-(diphenyl)-alpha-hydroxyacetate (QNB), was resolved into its four stereoisomers. In vitro binding assays of the stereoisomers of 2 demonstrated that while the (S,S)-isomer did not have significant receptor binding, the other stereoisomers of 2 bound with high affinity to the various mAChR subtypes [K-i, nM: m1, (R,R), 0.33; (R,S), 1.4; (S,R), 3.8; m2, (R,R), 0.1; (R,S), 4.2; (S,R), < 75% binding; m3, (R,R), 0.34; (R,S), 3.1; (S,R), 7.6]. The (R,R)- and (R,S)stereoisomers of 2 were radiolabeled with fluorine-18 via a two step procedure in radiochemical yields of 12-21% (n=2) and 9% (decayed corrected to beginning of synthesis), respectively. In vivo biodistribution studies demonstrated significant uptake of [F-18]-(R,R)-2 in cerebral mAChR-rich regions of rat brains up to 3 h post injection. Low accumulation of fluorine-18 in the bone indicated that [F-18]-(R,R)-2 displayed significant in vivo stability. In contrast. [F-18]-(R,S)-2 demonstrated rapid washout from all cerebral regions. Preinjection of (R)-QNB (3 mg/kg) 1 h prior to the injection of [F-18]-(R,R)-2 blocked the uptake of activity in cerebral regions by approximately 90% while the preinjection of haloperidol (3 mg/kg) 1 h prior to the injection of [F-18]-(R;R)2 demonstrated no statistically significant effect on the binding of the radiotracer. An ex vivo metabolic study utilizing [F-18]-(R,R)-2 demonstrated that greater than 96% of the organic soluble radioactivity which localized in the brain and heart at 1 h post-injection migrated on TLC with the same mobility as the parent. Although [F-18]-(R,R)-2 did not demonstrate a desired in vitro or in vivo mAChR subtype selectivity, these results suggest that the introduction of a fluoroalkyl group in various benzylic analogues of QNB is an attractive radiolabeling moiety for further evaluation in the design of selective PET mAChR imaging ligands.
C1 Oak Ridge Natl Lab, Div Life Sci, Nucl Med Grp, Oak Ridge, TN 37831 USA.
RP Knapp, FFR (reprint author), Oak Ridge Natl Lab, Div Life Sci, Nucl Med Grp, POB 2008,Bldg 4501,Mail Stop 6229, Oak Ridge, TN 37831 USA.
NR 35
TC 2
Z9 2
U1 1
U2 1
PU JOHN WILEY & SONS LTD
PI W SUSSEX
PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND
SN 0362-4803
J9 J LABELLED COMPD RAD
JI J. Label. Compd. Radiopharm.
PD AUG
PY 1998
VL 41
IS 8
BP 681
EP 704
DI 10.1002/(SICI)1099-1344(1998080)41:8<681::AID-JLCR131>3.0.CO;2-Q
PG 24
WC Biochemical Research Methods; Chemistry, Medicinal; Chemistry,
Analytical; Pharmacology & Pharmacy
SC Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Chemistry
GA 106FT
UT WOS:000075119800001
ER
PT J
AU Qiu, SQ
Bergeron, N
Kotite, L
Krauss, RM
Bensadoun, A
Havel, RJ
AF Qiu, SQ
Bergeron, N
Kotite, L
Krauss, RM
Bensadoun, A
Havel, RJ
TI Metabolism of lipoproteins containing apolipoprotein B in hepatic
lipase-deficient mice
SO JOURNAL OF LIPID RESEARCH
LA English
DT Article
DE apolipoprotein B-100; apolipoprotein B-48; apolipoprotein E; chylomicron
remnants; intermediate density lipoproteins; low density lipoprotein
size
ID TRIGLYCERIDE-RICH LIPOPROTEINS; CHYLOMICRON REMNANTS; BLOOD-PLASMA;
RAT-LIVER; DENSITY-LIPOPROTEINS; SERUM; HUMANS; RADIOIMMUNOASSAY;
ENDOCYTOSIS; INHIBITION
AB Mice lacking hepatic lipase have been reported to express mild hyperlipidemia characterized by increased concentrations of large high density lipoproteins, but normal concentrations of lipoproteins containing apolipoprotein B, Whereas hepatic lipase has been implicated in the clearance and processing of chylomicron remnants in rats, no such defect was found in these mice, We have further characterized the abnormal lipoprotein phenotype in young hepatic lipase-deficient mice and have found more pronounced elevations of high density lipoproteins associated in particular with a 5-fold increase in plasma concentrations of apolipoprotein E, In addition, there was a reduction ire the concentration of low density lipoproteins containing apolipoprotein B-100 and B-48 relative to precursor lipoproteins of lower density and a pronounced deficiency of apolipoprotein B-containing low density lipoproteins with density exceeding 1.029 g/mL, Conversion of radiolabeled rabbit intermediate density Lipoproteins to low density lipoproteins was reduced by 6-fold as compared with wild-type mice. Although clearance of cholesteryl ester-labeled chylomicrons from the blood was unimpaired in the deficient mice, that of chylomicron remnants was reduced, Furthermore, endocytosis of chylomicron cholesteryl esters into liver cells occurred more rapidly than in wild-type mice, The unimpaired hepatic clearance of injected chylomicron particles in hepatic lipase-deficient mice may be the result of greater acquisition of apoE from high density lipoproteins during remnant formation. These studies thus demonstrate a critical role for mouse hepatic lipase in the formation of small, dense low density lipoproteins, as well as participation in the normal clearance and processing of chylomicron remnants.
C1 Univ Calif San Francisco, Cardiovasc Res Inst, San Francisco, CA 94143 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Cornell Univ, Div Nutr Sci, Ithaca, NY 14853 USA.
RP Havel, RJ (reprint author), Univ Calif San Francisco, Cardiovasc Res Inst, San Francisco, CA 94143 USA.
FU NHLBI NIH HHS [HL14237, HL18574]
NR 47
TC 30
Z9 31
U1 1
U2 2
PU LIPID RESEARCH INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA
SN 0022-2275
J9 J LIPID RES
JI J. Lipid Res.
PD AUG
PY 1998
VL 39
IS 8
BP 1661
EP 1668
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 107WH
UT WOS:000075233600015
PM 9717727
ER
PT J
AU Golosov, DI
Ruckenstein, AE
AF Golosov, DI
Ruckenstein, AE
TI Transverse spin diffusion in a dilute spin-polarized degenerate Fermi
gas
SO JOURNAL OF LOW TEMPERATURE PHYSICS
LA English
DT Article
ID ZERO-TEMPERATURE ATTENUATION; TRANSPORT-PROPERTIES; HE-3-HE-4 SOLUTIONS;
DYNAMICS; LIQUIDS; FIELD; COEFFICIENTS; RELAXATION; SYSTEMS; WAVES
AB We re-examine the calculation of the transverse spin-diffusion coefficient in ct dilute degenerate spin-polarized Fermi gas, for rite case of s-wave scattering. The special feature of this limit is that the dependence of the spin diffusion coefficient on temperature and field can be calculated explicitly with no further approximations. This exact solution uncovers a novel intermediate behaviour between the high field spin-rotation dominated regime in which D-perpendicular to proportional to H-2, D-parallel to proportional to T-2, and the low-field isotropic, collision dominated regime with D perpendicular to = D parallel to proportional to T-2. In this intermediate regime, D perpendicular to,parallel to proportional to T-2 but D perpendicular to not equal D parallel to. We emphasize that the low-field crossover cannot be described,within the relaxation time approximation. We also present an analytical calculation of the self-energy in the s-wave approximation for a dilute spin-polarized Fermi gas, at zero temperature. This emphasizes the failure of the conventional Fermi-liquid phase space arguments for processes involving spin? flips. We close by reviewing the evidence for. the existence of the intermediate regime in experiments on weakly spin-polarized He-3 and He-3-He-4 mixtures.
C1 Rutgers State Univ, Dept Phys, Piscataway, NJ 08855 USA.
RP Golosov, DI (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM golosov@control.uchicago.edu; andreir@physics.rutgers.edu
NR 41
TC 8
Z9 8
U1 0
U2 1
PU PLENUM PUBL CORP
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2291
J9 J LOW TEMP PHYS
JI J. Low Temp. Phys.
PD AUG
PY 1998
VL 112
IS 3-4
BP 265
EP 301
DI 10.1023/A:1022693917461
PG 37
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 112EC
UT WOS:000075480300006
ER
PT J
AU Pietrass, T
Seydoux, R
Pines, A
AF Pietrass, T
Seydoux, R
Pines, A
TI Surface selective H-1/Si-29 CP NMR by NOE enhancement from laser
polarized xenon
SO JOURNAL OF MAGNETIC RESONANCE
LA English
DT Article
DE optical pumping; Si-29 solid state NMR; spin polarization induced
nuclear Overhauser effect; cross polarization
ID CROSS-POLARIZATION; POLYMER SURFACE; XE-129; SPECTROSCOPY; SPINS
AB The surface proton spin polarization created by the spin-polarization-induced nuclear Overhauser effect from optically polarized xenon can be transferred in a subsequent step by solid-state cross polarization to another nuclear spin species such as Si-29. The technique exploits the dipolar interactions of xenon nuclear spins with high gamma nuclei such as H-1, and is experimentally simpler than direct polarization transfer from Xe-129 to heteronuclei such as C-13 and Si-29. (C) 1998 Academic Press.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
New Mexico Tech, Dept Chem, Socorro, NM 87801 USA.
RP Pietrass, T (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
NR 20
TC 30
Z9 31
U1 1
U2 5
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1090-7807
J9 J MAGN RESON
JI J. Magn. Reson.
PD AUG
PY 1998
VL 133
IS 2
BP 299
EP 303
DI 10.1006/jmre.1998.1447
PG 5
WC Biochemical Research Methods; Physics, Atomic, Molecular & Chemical;
Spectroscopy
SC Biochemistry & Molecular Biology; Physics; Spectroscopy
GA 116WN
UT WOS:000075748200008
ER
PT J
AU Minard, KR
Guo, XL
Wind, RA
AF Minard, KR
Guo, XL
Wind, RA
TI Quantitative H-1 MRI and MRS microscopy of individual V79 lung tumor
spheroids
SO JOURNAL OF MAGNETIC RESONANCE
LA English
DT Article
DE MR microscopy; tumor spheroids; metabolites
ID MAGNETIC-RESONANCE SPECTROSCOPY; MULTICELLULAR SPHEROIDS; NMR
MICROSCOPY; TRANSFORMED-CELLS; SELF-DIFFUSION; CANCER-CELLS; INVIVO;
RESOLUTION; P-31-NMR; SPECTRA
AB In this Communication H-1 MRI and MRS microscopy experiments of individual V79 lung tumor spheroids with diameters between 550 and 650 mu m are reported. The results have been used to determine the T-1, T-2, and D values as well as the concentrations of water, total choline, creatine/phosphocreatine, and mobile lipids in the viable rims and in the necrotic centers. (C) 1998 Academic Press.
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Wind, RA (reprint author), Pacific NW Natl Lab, POB 999,MS K8-98, Richland, WA 99352 USA.
NR 32
TC 23
Z9 23
U1 0
U2 2
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1090-7807
J9 J MAGN RESON
JI J. Magn. Reson.
PD AUG
PY 1998
VL 133
IS 2
BP 368
EP 373
DI 10.1006/jmre.1998.1493
PG 6
WC Biochemical Research Methods; Physics, Atomic, Molecular & Chemical;
Spectroscopy
SC Biochemistry & Molecular Biology; Physics; Spectroscopy
GA 116WN
UT WOS:000075748200017
PM 9716481
ER
PT J
AU de Swiet, TM
Tomaselli, M
Hurlimann, MD
Pines, A
AF de Swiet, TM
Tomaselli, M
Hurlimann, MD
Pines, A
TI In situ NMR analysis of fluids contained in sedimentary rock
SO JOURNAL OF MAGNETIC RESONANCE
LA English
DT Article
DE NMR; porous media; rocks; oil; MAS
ID HIGH-RESOLUTION; CHEMICAL-SHIFT; WATER; CORES; MAS; OIL
AB Limitations of resolution and absorption in standard chemical spectroscopic techniques have made it difficult to study fluids in sedimentary rocks. In this paper, we show that a chemical characterization of pore fluids may be obtained in situ by magic angle spinning (MAS) nuclear magnetic resonance (NMR), which is normally used for solid samples. H-1 MAS-NMR spectra of water and crude oil in Berea sandstone show sufficient chemical shift resolution for a straightforward determination of the oil/water ratio, (C) 1998 Academic Press.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Schlumberger Doll Res Ctr, Ridgefield, CT 06877 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP de Swiet, TM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
NR 23
TC 25
Z9 25
U1 0
U2 2
PU ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1090-7807
J9 J MAGN RESON
JI J. Magn. Reson.
PD AUG
PY 1998
VL 133
IS 2
BP 385
EP 387
DI 10.1006/jmre.1998.1459
PG 3
WC Biochemical Research Methods; Physics, Atomic, Molecular & Chemical;
Spectroscopy
SC Biochemistry & Molecular Biology; Physics; Spectroscopy
GA 116WN
UT WOS:000075748200020
ER
PT J
AU Shi, YM
Jiles, DC
Ramesh, A
AF Shi, YM
Jiles, DC
Ramesh, A
TI Generalization of hysteresis modeling to anisotropic and textured
materials
SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
LA English
DT Article; Proceedings Paper
CT ICM 97 Meeting
CY 1997
CL CAIRNS, AUSTRALIA
SP ICM
DE hysteresis; anisotropy; texture; models
ID FERROMAGNETIC HYSTERESIS
AB A generalized model has recently been developed to incorporate the effects of anisotropy and texture into the description of hysteresis. It is shown that these two effects can be incorporated into the model simply through changes in the anhysteretic magnetization. In this paper, the new model is used to fit several sets of experimental hysteresis loops. The generalized model has been used to describe the magnetization curves of soft and especially hard magnetic materials. The latter normally exhibit high anisotropy and are often highly textured, which previously had made them difficult to model accurately within the confines of the restricted isotropic model. The results show significant improvement of the generalized model over the previous isotropic model. (C), 1998 Elsevier Science B.V. All rights reserved.
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Jiles, DC (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RI Jiles, David/H-9548-2012
NR 5
TC 16
Z9 16
U1 1
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-8853
J9 J MAGN MAGN MATER
JI J. Magn. Magn. Mater.
PD AUG
PY 1998
VL 187
IS 1
BP 75
EP 78
DI 10.1016/S0304-8853(98)00104-8
PG 4
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA 101NX
UT WOS:000074876000009
ER
PT J
AU Fang, X
Jiles, DC
Shi, Y
AF Fang, X
Jiles, DC
Shi, Y
TI Modeling of magnetic properties of Nd-Dy-Fe-B particulate composites
with different compacting processes
SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
LA English
DT Article; Proceedings Paper
CT ICM 97 Meeting
CY 1997
CL CAIRNS, AUSTRALIA
SP ICM
DE Nd-Dy-Fe-B magnets; hysteresis modeling; permanent magnets
ID COERCIVITY; HYSTERESIS; PARTICLES
AB Nd-Fe-B hard magnetic materials have been investigated intensively in recent years because of their high coercivities and maximum energy products. In this study we have examined tl-le properties of the quaternary alloy Nd-Dy-Fe-B. Experiments revealed the underlying magnetic properties of these samples and these have been related to a theoretical model of the magnetization process. Samples were prepared in the form of particles either in the free state, in a randomly oriented state or in a field-oriented state obtained from solidification under an external field. Modeling results and microstructure analysis showed that compacting process strongly influenced the final magnetic properties through the change in the coupling coefficient resulting from one- or two-dimensional couplings among the particles which were totally different from those of the same materials in bulk state. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Jiles, DC (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RI Jiles, David/H-9548-2012
NR 9
TC 2
Z9 2
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-8853
J9 J MAGN MAGN MATER
JI J. Magn. Magn. Mater.
PD AUG
PY 1998
VL 187
IS 1
BP 79
EP 82
DI 10.1016/S0304-8853(98)00103-6
PG 4
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA 101NX
UT WOS:000074876000010
ER
PT J
AU Dobson, FS
Chesser, RK
Hoogland, JL
Sugg, DW
Foltz, DW
AF Dobson, FS
Chesser, RK
Hoogland, JL
Sugg, DW
Foltz, DW
TI Breeding groups and gene dynamics in a socially structured population of
prairie dogs
SO JOURNAL OF MAMMALOGY
LA English
DT Article
DE allozymes; breeding groups; demography; gene dynamics; pedigrees;
black-tailed prairie dogs
ID CYNOMYS-LUDOVICIANUS; SUBDIVIDED POPULATIONS; NATURAL-POPULATIONS;
MATING SYSTEMS; F-STATISTICS; FLOW; DIVERSITY; DISPERSAL; MAMMALS;
PHILOPATRY
AB Genetic substructuring of a colony of black-tailed prairie dogs (Cynomys ludovicianus) was examined using three different sources of information: allozyme alleles, pedigrees, and demography (a "breeding-group" model based on mating and dispersal patterns). Prairie dogs and their social breeding groups (called "coteries") were studied under natural conditions during a 15-year period. Prairie-dog coteries exhibited substantial genetic differentiation, with 15-20% of the genetic variation occurring among coteries. Mating patterns within the colony approximated random mating, and, thus, mates tended to originate from different coteries. Social groups of black-tailed prairie dogs resulted in genetic substructuring of the colony, a conclusion that was supported by estimates from allozyme alleles and colony pedigrees. Predictions of the breeding-group model also were consistent with and supported by estimates from allozyme and pedigree data. Some methodological problems were revealed during analyses. Although individuals of all ages usually are pooled for biochemical estimates of among-group genetic differentiation, our estimates of among-coterie variation from allozyme data were somewhat higher for young than for older prairie dogs, perhaps due to sampling effects caused by mating patterns and infanticide of offspring. Pedigree estimates of among-coterie genetic differentiation were significantly positive for young prairie dogs, adult females, and adult males. Those estimates were always more accurate for the offspring generation, however because pedigree data were always more complete for young and genetic differences among coteries were diluted by virtually complete dispersal of males away from their natal coteries.
C1 Auburn Univ, Dept Zool & Wildlife Sci, Auburn, AL 36849 USA.
Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
Univ Georgia, Dept Genet, Athens, GA 30602 USA.
Univ Maryland, Appalachian Environm Lab, Frostburg, MD 21532 USA.
Louisiana State Univ, Dept Zool & Physiol, Baton Rouge, LA 70803 USA.
RP Dobson, FS (reprint author), Auburn Univ, Dept Zool & Wildlife Sci, Auburn, AL 36849 USA.
RI Hoogland, John/B-3950-2015
NR 40
TC 47
Z9 47
U1 0
U2 10
PU AMER SOC MAMMALOGISTS
PI PROVO
PA BRIGHAM YOUNG UNIV, DEPT OF ZOOLOGY, PROVO, UT 84602 USA
SN 0022-2372
J9 J MAMMAL
JI J. Mammal.
PD AUG
PY 1998
VL 79
IS 3
BP 671
EP 680
DI 10.2307/1383079
PG 10
WC Zoology
SC Zoology
GA 114TJ
UT WOS:000075624900002
ER
PT J
AU Chesser, RK
AF Chesser, RK
TI Relativity of behavioral interactions in socially structured populations
SO JOURNAL OF MAMMALOGY
LA English
DT Article
DE social behavior; evolution; genetics; F-statistics; mating systems;
polygyny
ID KIN SELECTION; SUBDIVIDED POPULATIONS; EFFECTIVE SIZES; GENE DIVERSITY;
PRAIRIE DOGS; ORGANIZATION; INFANTICIDE; PHILOPATRY; EVOLUTION;
DISPERSAL
AB Mammals form a variety of inter-individual associations within populations. Because associations between individuals usually are typified by different degrees of genetic correlations within and among groups, evolution of behaviors appropriate ro each type will differ also. I reviewed alternative types of behavior and examined conditions favorable for the evolution of social groups. F-statistics are fundamental to evolution of social behaviors and estimation of spatial and temporal dynamics of gene frequencies. Therefore, mating and dispersal tactics within populations establish the genetic background which, in turn, influences selection of other behavioral characteristics. Because evolution of social behaviors is relative to proportions of gene diversity among groups, conditions favoring evolutionary change may remain relatively constant despite continuous losses in genetic variance over time. Evolution of spite and behaviors favoring family groups may be limited by low reproductive rates in many mammals. Low reproductive potential also may be a primary reason that many mammalian social groupings are formed among offspring of related families. Mating behaviors most conducive to the formation of inter-family social groups are discussed.
C1 Univ Georgia, Dept Genet, Athens, GA 30602 USA.
Savannah River Ecol Lab, Aiken, SC 29802 USA.
RP Chesser, RK (reprint author), Univ Georgia, Dept Genet, Athens, GA 30602 USA.
NR 51
TC 21
Z9 21
U1 1
U2 6
PU AMER SOC MAMMALOGISTS
PI PROVO
PA BRIGHAM YOUNG UNIV, DEPT OF ZOOLOGY, PROVO, UT 84602 USA
SN 0022-2372
J9 J MAMMAL
JI J. Mammal.
PD AUG
PY 1998
VL 79
IS 3
BP 713
EP 724
DI 10.2307/1383082
PG 12
WC Zoology
SC Zoology
GA 114TJ
UT WOS:000075624900005
ER
PT J
AU Serfass, TL
Brooks, RP
Novak, JM
Johns, PE
Rhodes, OE
AF Serfass, TL
Brooks, RP
Novak, JM
Johns, PE
Rhodes, OE
TI Genetic variation among populations of river otters in North America:
Considerations for reintroduction projects
SO JOURNAL OF MAMMALOGY
LA English
DT Article
DE Lontra canadensis; river otter; population genetics; reintroduction
ID GENIC VARIABILITY; LUTRA-CANADENSIS; LARGE MAMMALS; DIFFERENTIATION;
MARTEN
AB Horizontal starch gel electrophoresis was used to assess variability at 23 presumptive gene loci of 732 river otters obtained from fur-trappers in 18 states and three Canadian provinces. States and provinces providing otters were sorted into eight geographic regions for genetic comparisons. Multilocus heterozygosity and polymorphism ranged from 0.018 to 0.032 and 0.044 to 0.087, respectively. One locus, esterase-2, (EST-2) demonstrated a high level of polymorphism throughout all regions. Malate dehydrogenase-1 (MDH-1) was polymorphic throughout the Mississippi drainage but not elsewhere. Heterozygosity, occurrence of rare alleles, and mean number of alleles per locus were associated positively with estimated population sizes. Average heterozygosity and polymorphism values for otters within regions were lower than overall averages reported for mammals but similar to the range of those observed in other mammalian carnivores. Patterns of gene flow suggested by the distribution of polymorphism at the MDH-1 locus do not concur with the current taxonomic classification of river otters. Levels of genetic variation detected in this investigation present a positive outlook for the maintenance of genetic diversity in river otter populations, if sound management principles are applied for reintroductions.
C1 Frostburg State Univ, Dept Biol, Frostburg, MD 21532 USA.
Penn State Univ, Sch Forest Resources, University Pk, PA 16802 USA.
Savannah River Ecol Lab, Aiken, SC 29802 USA.
Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47906 USA.
RP Serfass, TL (reprint author), Frostburg State Univ, Dept Biol, Frostburg, MD 21532 USA.
NR 44
TC 22
Z9 23
U1 0
U2 19
PU AMER SOC MAMMALOGISTS
PI PROVO
PA BRIGHAM YOUNG UNIV, DEPT OF ZOOLOGY, PROVO, UT 84602 USA
SN 0022-2372
J9 J MAMMAL
JI J. Mammal.
PD AUG
PY 1998
VL 79
IS 3
BP 736
EP 746
DI 10.2307/1383084
PG 11
WC Zoology
SC Zoology
GA 114TJ
UT WOS:000075624900007
ER
PT J
AU Pang, Y
Li, J
Barton, TJ
AF Pang, Y
Li, J
Barton, TJ
TI Processible
poly[(p-phenyleneethynylene)-alt-(2,5-thienyleneethynylene)]s of high
luminescence: their synthesis and physical properties
SO JOURNAL OF MATERIALS CHEMISTRY
LA English
DT Article
ID LIGHT-EMITTING-DIODES; DETECTED MAGNETIC-RESONANCE; CONJUGATED POLYMERS;
OPTICAL-PROPERTIES; PHOTOLUMINESCENCE; ELECTROLUMINESCENCE; DERIVATIVES;
BLUE
AB Several alternating copolymers, poly[(p-phenyleneethynylene)-alt-(2,5-thienyleneethynylene)]s (PPETEs), have been synthesized by using a Heck-type coupling reaction under mild conditions. The polymers are characterized by using H-1 and C-13 NMR, UV-VIS absorption and fluorescence spectroscopy. PPETEs produced under the mild conditions exhibit longer conjugation length (ca. 10 nm in UV-VIS absorption lambda(max)) than the same polymers synthesized at high temperature. The chain rigidity of the copolymers is moderate with Mark-Houwink constant alpha = 0.82-0.94, which is moderately higher than PTE 2 (alpha = 0.68) but significantly lower than PPE 3 (alpha = 1.92). The PL quantum efficiencies of PPETE copolymers are found to be phi(f1) = 0.37-0.48, which is comparable to PPE homopolymers and much higher than for PTE (phi(f1) = 0.18). Synthesis of copolymer PPETE thus successfully combines both the high luminescence of PPE and good solubility of PTE into a single polymer chain.
C1 Clark Atlanta Univ, Dept Chem, Atlanta, GA 30314 USA.
Clark Atlanta Univ, Ctr High Performance Polymers & Composites, Atlanta, GA 30314 USA.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Pang, Y (reprint author), Clark Atlanta Univ, Dept Chem, Atlanta, GA 30314 USA.
EM ypang@cau.edu
NR 29
TC 25
Z9 25
U1 0
U2 4
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 0959-9428
J9 J MATER CHEM
JI J. Mater. Chem.
PD AUG
PY 1998
VL 8
IS 8
BP 1687
EP 1690
DI 10.1039/a802032i
PG 4
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 109MV
UT WOS:000075327100003
ER
PT J
AU Narula, CK
Allard, LF
AF Narula, CK
Allard, LF
TI Novel zirconium nitride precursor: synthesis, decomposition pathway, and
pyrolysis of [(CH3)(3)Si](2)NH center dot ZrCl4
SO JOURNAL OF MATERIALS CHEMISTRY
LA English
DT Article
ID TITANIUM NITRIDE; THIN-FILMS
AB The reaction of hexamethyldisilazane with zirconium tetrachloride furnishes an adduct, [(CH3)(3)Si](2)NH . ZrCl4, which is soluble in dichloromethane. The decomposition of [(CH3)(3)Si](2)NH . ZrCl4 proceeds with the elimination of trimethylchlorosilane and hydrogen chloride and is complete at 600 degrees C. The resulting powder is amorphous zirconium nitride which is highly susceptible to hydrolysis and oxidation. The pyrolysis of the precursor in a dynamic vacuum or ammonia atmosphere at 600 degrees C and subsequent sintering of the powder at 900 degrees C furnishes crystalline zirconium nitride. Transmission electron microscopy of the powder shows that the particles are coated with a thin zirconium oxide layer. Crystalline zirconium nitride powder, free from zirconium oxide impurities, is obtained if the sintering is carried out at 1075 degrees C.
C1 Ford Motor Co, Dept Chem, Dearborn, MI 48121 USA.
Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37831 USA.
RP Narula, CK (reprint author), Ford Motor Co, Dept Chem, POB 2053,MD 3083, Dearborn, MI 48121 USA.
EM cnarula@ford.com
NR 20
TC 7
Z9 7
U1 0
U2 3
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF,
CAMBS, ENGLAND
SN 0959-9428
J9 J MATER CHEM
JI J. Mater. Chem.
PD AUG
PY 1998
VL 8
IS 8
BP 1881
EP 1884
DI 10.1039/a802864h
PG 4
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 109MV
UT WOS:000075327100034
ER
PT J
AU Zanoria, ES
Watkins, TR
Breder, K
Riester, L
Bashkansky, M
Reintjes, J
Sun, JG
Ellingson, WA
Blau, PJ
AF Zanoria, ES
Watkins, TR
Breder, K
Riester, L
Bashkansky, M
Reintjes, J
Sun, JG
Ellingson, WA
Blau, PJ
TI Assessment of techniques for characterizing the surface quality of
ground silicon nitride
SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
LA English
DT Article
DE grinding; silicon nitride; surface characterization; surface wear
ID SUBSURFACE DEFECT DETECTION; RESIDUAL-STRESS; CERAMICS; DAMAGE
AB This study evaluates techniques used to detect and quantify the extent of surface and subsurface damage in ground silicon nitride, Specimens of two differently ground surfaces of a hot isostatically pressed (HIP) silicon nitride, commercially designated as GS-44, were subjected to six types of analyses, namely mechanical stylus profiling, atomic force microscopy, point-counting analysis of fragmentation pits, laser-light scattering, optical gating, and grazing incidence x-ray diffraction (GIXD), The results of these investigations are compared and discussed. The techniques providing the dearest correlations with grinding conditions were mechanical stylus roughness, fragmentation analysis, and GIXD (residual stress conditions). Those that exhibited some correlation but appear to require more work to develop a reliable evaluation method were laser scattering and optical gating, Atomic force microscopy was useful, but not as a routine investigative tool for quality control in ceramic machining. The techniques that appear to have the most near-term potential for routine use are fragmentation analysis and optical gating, Laser-based optical scattering exhibits potential for routine application, but, more development is needed for its commercialization.
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
USN, Res Lab, Washington, DC 20375 USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
RP Zanoria, ES (reprint author), Caterpillar Inc, PPG, Peoria, IL 61656 USA.
RI Watkins, Thomas/D-8750-2016
OI Watkins, Thomas/0000-0002-2646-1329
NR 26
TC 2
Z9 2
U1 0
U2 0
PU ASM INTERNATIONAL
PI MATERIALS PARK
PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002
USA
SN 1059-9495
J9 J MATER ENG PERFORM
JI J. Mater. Eng. Perform.
PD AUG
PY 1998
VL 7
IS 4
BP 533
EP 547
DI 10.1361/105994998770347693
PG 15
WC Materials Science, Multidisciplinary
SC Materials Science
GA 106DW
UT WOS:000075115500013
ER
PT J
AU Keblinski, P
Wolf, D
Phillpot, SR
Gleiter, H
AF Keblinski, P
Wolf, D
Phillpot, SR
Gleiter, H
TI Role of bonding and coordination in the atomic structure and energy of
diamond and silicon grain boundaries
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID ELECTRONIC-STRUCTURE; COMPUTER-SIMULATION; AMORPHOUS-CARBON; TWIST;
TILT; SURFACE; FILMS; GERMANIUM; STABILITY
AB The high-temperature equilibrated atomic structures and energies of large-unit-cell grain boundaries (GB's) in diamond and silicon are determined by means of Monte-Carlo simulations using Tersoff's potentials for the two materials, Silicon provides a relatively simple basis for understanding GB structural disorder in a purely sp(3) bonded material against which the greater bond stiffness in diamond combined with its ability to change hybridization in a defected environment from sp(3) to sp(2) can be elucidated. We find that due to the purely sp(3)-type bonding in Si, even in highly disordered, high-energy GB's at least 80% of the atoms are fourfold coordinated in a rather dense confined amorphous structure. By contrast, in diamond even relatively small bond distortions exact a considerable price in energy that favors a change to sp(2)-type local bonding; these competing effects translate into considerably more ordered diamond GB's; however, at the price of as many as 80% of the atoms being only threefold coordinated. Structural disorder in the Si GB's is therefore partially replaced by coordination disorder in the diamond GB's. In spite of these large fractions of three-coordinated GB carbon atoms, however, the three-coordinated atoms are rather poorly connected amongst themselves, thus likely preventing any type of graphite-like electrical conduction through the GB's.
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany.
RP Keblinski, P (reprint author), Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RI Phillpot, Simon/J-9117-2012;
OI Phillpot, Simon/0000-0002-7774-6535
NR 47
TC 63
Z9 63
U1 2
U2 11
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD AUG
PY 1998
VL 13
IS 8
BP 2077
EP 2099
DI 10.1557/JMR.1998.0292
PG 23
WC Materials Science, Multidisciplinary
SC Materials Science
GA 104AC
UT WOS:000074989200009
ER
PT J
AU Isobe, T
Toriyama, T
Weeks, RA
Zuhr, RA
AF Isobe, T
Toriyama, T
Weeks, RA
Zuhr, RA
TI Chemical interaction between nitrogen and iron in silica glasses via
sequential ion-implantation
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID MAGNETIC-PROPERTIES; FUSED-SILICA; MOSSBAUER; MARTENSITE; PARTICLES;
CRYSTALS; FE2SIO4; OXIDES; MOMENT; FE16N2
AB Silica glass plates (Corning 7940 excimer grade) were implanted sequentially with N+ at 52 keV to different doses, ranging from 0 to 1.2 x 10(17) ions cm(-2), and then with Fe+ at 160 keV to 6 x 10(16) ions cm(-2) at room temperature and 4 mu A cm(-2). The intensity of ferromagnetic magnetic resonance (FMR) absorption and the magnetization calculated by the angular dependence of the FMR field reach maxima at an N/Fe atomic ratio similar to 0.2. Two peaks due to Fe 2p(3/2) electron are observed at 707.2 +/- 0.2 and 710.9 +/- 0.2 eV in the x-ray photoelectron spectra, The intensity of the former relative to the latter decreases with increasing the N dose, The conversion electron Mossbauer spectrum reveals the formation of superparamagnetic iron nitride as well as the existence of Fe2+ and Fe3+ in silica when implanting N+ to 7.5 x 10(15) ions cm(-2) and then Fe-57(+) to 6 x 10(16) ions cm(-2) at N/Fe = 0.125. These results suggest that sequential ion-implantation of N+ and Fe+ produces iron nitride in silica glasses.
C1 Keio Univ, Fac Sci & Technol, Dept Appl Chem, Yokohama, Kanagawa 223, Japan.
Musashi Inst Technol, Dept Energy Sci & Engn, Setagaya Ku, Tokyo 158, Japan.
Vanderbilt Univ, Dept Appl & Engn Sci, Nashville, TN 37235 USA.
Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
RP Isobe, T (reprint author), Keio Univ, Fac Sci & Technol, Dept Appl Chem, 3-14-1 Hiyoshi, Yokohama, Kanagawa 223, Japan.
NR 40
TC 0
Z9 0
U1 1
U2 1
PU MATERIALS RESEARCH SOCIETY
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD AUG
PY 1998
VL 13
IS 8
BP 2144
EP 2150
DI 10.1557/JMR.1998.0300
PG 7
WC Materials Science, Multidisciplinary
SC Materials Science
GA 104AC
UT WOS:000074989200017
ER
PT J
AU Vetrone, J
Foster, CM
Bai, GR
Wang, A
Patel, J
Wu, X
AF Vetrone, J
Foster, CM
Bai, GR
Wang, A
Patel, J
Wu, X
TI Growth, microstructure, and resistivity of RuO2 thin films grown by
metal-organic chemical vapor deposition
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID SPUTTERED RUTHENIUM DIOXIDE; ELECTRICAL-PROPERTIES; BOTTOM ELECTRODES;
CAPACITORS; FATIGUE; RESISTORS
AB Polycrystalline RuO2 thin films were grown by metal-organic chemical vapor deposition (MOCVD) on both SiO2/Si(001) and Pt/Ti/SiO2/Si(001) substrates, Films having a controllable and reproducible structural texture and phase purity were synthesized by carefully controlling deposition parameters. Moderate growth temperatures (similar to 350 degrees C) and low growth rates (<30 Angstrom/min) produced highly (110)-textured RuO2 films. Highly (101)-textured RuO2 films were favored at slightly lower temperatures (similar to 300 degrees C) and much higher growth rates (>30 Angstrom/min). The most conductive RuO3 films had resistivities of 34 to 40 mu Omega-cm at 25 degrees C, an average grain size of 65 +/- 15 nm, and a surface roughness (rms) of 3 to 10 nm, Both single-phase Ru and mixed Ru/RuO2 phase material were also fabricated at low temperatures (<350 degrees C) by using lower oxygen flow concentrations (<10%).
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
RP Vetrone, J (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 35
TC 38
Z9 38
U1 0
U2 3
PU MATERIALS RESEARCH SOCIETY
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD AUG
PY 1998
VL 13
IS 8
BP 2281
EP 2290
DI 10.1557/JMR.1998.0318
PG 10
WC Materials Science, Multidisciplinary
SC Materials Science
GA 104AC
UT WOS:000074989200035
ER
PT J
AU Lu, P
Chu, F
Jia, QX
Mitchell, TE
AF Lu, P
Chu, F
Jia, QX
Mitchell, TE
TI Microstructural characteristics of conductive SrRuO3 thin films formed
by pulsed-laser deposition
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID ELECTRICAL-PROPERTIES; FERROELECTRIC HETEROSTRUCTURES; YBA2CU3O7-X;
JUNCTIONS; ELECTRODES; BARRIER
AB Transmission electron microscopy and high-resolution electron microscopy have been used to study microstructural properties of conductive SrRuO3 films grown by pulsed laser deposition on (001) LaAlO3 and (001) SrTiO3 substrates. It was found that the SrRuO3 films deposited on both substrates consist of mixed domains of [001] and [110] orientations, with orientation relationships that can be described as (i) (001)(f) parallel to (001)(s) and [110](f) parallel to [100](s) and (ii) (110)(f) parallel to (001)(s) and [001](f) parallel to [100](s), respectively. The SrRuO3 films deposited on SrTiO3, in particular, were found to have a layered domain structure, with the [110] domain grown initially on the substate, followed by growth of the [001] oriented domain with increasing thickness. The films on SrTiO3 are strained and have a coherent interface with the substrate. The SrRuO3 films deposited on LaAlO3, on the other hand, contain a high density of structural defects such as stacking faults and microtwins on the (022) planes. Microtwins as large as 50 nm in thickness are observed in the films deposited on LaAlO3. Possible causes for the observed structural defects in the films are discussed.
C1 New Mexico Inst Min & Technol, Dept Mat Sci & Engn, Socorro, NM 87801 USA.
Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Lu, P (reprint author), New Mexico Inst Min & Technol, Dept Mat Sci & Engn, Socorro, NM 87801 USA.
RI Jia, Q. X./C-5194-2008
NR 28
TC 18
Z9 18
U1 0
U2 6
PU MATERIALS RESEARCH SOCIETY
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD AUG
PY 1998
VL 13
IS 8
BP 2302
EP 2307
DI 10.1557/JMR.1998.0321
PG 6
WC Materials Science, Multidisciplinary
SC Materials Science
GA 104AC
UT WOS:000074989200038
ER
PT J
AU Sugama, T
AF Sugama, T
TI Polyphenylenesulphide-sealed Ni-Al coatings for protecting steel from
corrosion and oxidation in geothermal environments
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID SPECTROSCOPY
AB Polyphenylenesulphide (PPS) polymer was applied as a sealing material to flame-sprayed nickel-aluminium (Ni-Al) coatings to protect the interior surfaces at the ends where the mild carbon steel (MCS) heat-exchanger tubes are jointed to the tubesheet. The aim of applying PPS is to prevent their corrosion, oxidation and abrasive wear, in a low pH, hypersaline brine geothermal environment at 200 degrees C under a hydrothermal pressure of 1.6 MPa. Although the Ni-Al coatings had an excellent thermal conductivity and a good wear-resistance, the inherent open structure of these coatings allowed the hot brine to permeate them easily under such pressure, causing the development of corrosion-induced stress cracks in the MCS. Furthermore, under these conditions, the coatings underwent oxidation with the formulation of Al2O3 as the major scale compound and NiO as the minor one. PPS sealant was used to solve these problems. However, one major drawback of PPS was its susceptibility to oxidation reaction with hot brine. This reaction not only incorporated more oxygen into the PPS, generating a sulphide --> sulphone transformation within PPS, but also it caused the decomposition of PPS, yielding polychloroaryl compound, and sodium sulphate, and also evolving SO, gases. The SO, gases had a chemical affinity for oxide scales in Ni-Al, forming water-soluble Al-2(SO4)(3) and NiSO4 salt reaction products at the PPS/Ni-Al interfaces. Despite the occurrence of such oxidation damage in PPS, an exposure for 14 days showed that there was no development of corrosion-caused cracks at the interfaces between the underlying steel and Ni-Al, nor was a striking oxidation of the sealed coating panels. (C) 1998 Kluwer Academic Publishers.
C1 Brookhaven Natl Lab, Dept Appl Sci, Energy Efficiency & Conservat Div, Upton, NY 11973 USA.
RP Sugama, T (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Energy Efficiency & Conservat Div, Upton, NY 11973 USA.
EM sugama@bnl.gov
NR 21
TC 9
Z9 9
U1 1
U2 7
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD AUG 1
PY 1998
VL 33
IS 15
BP 3791
EP 3803
DI 10.1023/A:1004678831064
PG 13
WC Materials Science, Multidisciplinary
SC Materials Science
GA 149DZ
UT WOS:000077591000004
ER
PT J
AU Hsueh, CH
Sun, EY
Becher, PF
Li, JB
AF Hsueh, CH
Sun, EY
Becher, PF
Li, JB
TI Some considerations of asymmetric cracking in an applied-moment double
cantilever beam
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID WHISKER-REINFORCED ALUMINA; R-CURVE BEHAVIOR; MATRIX COMPOSITE
AB In situ observations of crack propagation in applied-moment double cantilever beam specimens have been used to obtain the R-curve behaviour of Si3N4/50% BN-50% Al2O3 laminated composites, in which the BN-Al2O3 layers function as weak interphases. The crack plane and the crack direction were, respectively, normal and parallel to the plane of the laminated layers. During crack propagation, both delamination and crack deviation from the centreline of the specimen occurred. A deviated crack resulted in an uneven moment of inertia in the two beams of the specimen. For a non-laminated material, a deviated crack would become unstable, such that the crack would propagate towards the beam with the smaller moment of inertia. It was found in the present study that delamination in a laminated composite can stabilize the propagation of a deviated crack. The stabilization of a deviated crack with delamination was due to a decrease in the inequality in the moment of inertia of the two beams compared to that without delamination. (C) 1998 Kluwer Academic Publishers.
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China.
RP Hsueh, CH (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA.
RI Hsueh, Chun-Hway/G-1345-2011
NR 17
TC 0
Z9 0
U1 1
U2 2
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD AUG 1
PY 1998
VL 33
IS 15
BP 3891
EP 3898
DI 10.1023/A:1004628225130
PG 8
WC Materials Science, Multidisciplinary
SC Materials Science
GA 149DZ
UT WOS:000077591000016
ER
PT J
AU Biner, SB
AF Biner, SB
TI Stress states in RENi5 powders during hydrogen charging and discharging
cycles
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID ABSORPTION
AB In this study, the evolution of the stress states in RENi5 particles during hydrogen charging and discharging cycles were investigated using coupled diffusion-deformation finite-element method analyses. The results indicate that large tensile stresses, of the order of 20-30% of the modulus of elasticity, develop in the particles even in the absence of both internal and external crack-like defects. The internal and external cracks behave differently from each other during hydrogen charging and discharging cycles. Therefore, the fracture resistance of the particles containing external cracks will be different from the particles having internal cracks. The disc-shaped particles, in addition to having faster charging-discharging cycles, may offer better resistance to fracture than the spherical particles. (C) 1998 Kluwer Academic Publishers.
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Biner, SB (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
NR 7
TC 1
Z9 1
U1 0
U2 2
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD AUG 1
PY 1998
VL 33
IS 15
BP 3935
EP 3943
DI 10.1023/A:1004640627855
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA 149DZ
UT WOS:000077591000021
ER
PT J
AU Biner, SB
AF Biner, SB
TI A numerical analysis of failure characteristics of ductile layers in
laminated composites
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article
ID BRITTLE-MATRIX COMPOSITES; FRACTURE-TOUGHNESS; BEHAVIOR; REINFORCEMENT;
CERAMICS; MOSI2; VOIDS
AB In this study, the failure of the ductile layers from collinear, multiple and delaminating cracks that occur in laminated composite systems was studied using a constitutive relationship that accounts for strength degradation resulting from the nucleation and growth of voids. The results indicate that, in laminated composites, void nucleation and growth ahead of the cracks occur at a much faster rate because of evolution of much higher stress values in the interface region. Except for short crack extensions, collinear and multiple cracks develop crack resistance curves similar to that seen for a crack in the ductile layer material as a homogenous isotropic cases. For delaminating crack cases, the fracture behaviour is strongly influenced by the delamination length. The resistance of the ductile layers to crack extension can be significantly reduced by short delamination lengths; however, for large delamination lengths the resistance to crack extension becomes greater than that seen for the ductile material. The results also show that, if the crack tip is at the interface, similar maximum stress values develop in the ductile layers as in the fracture test of the same ductile material, suggesting that ductile-brittle fracture transition behaviour of the ductile layers is dependent upon the extent of the cracks in the brittle layers and fracture characteristics of the brittle layers. (C) 1998 Kluwer Academic Publishers.
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Biner, SB (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM biner@ameslab.gov
NR 27
TC 4
Z9 4
U1 0
U2 1
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD AUG 1
PY 1998
VL 33
IS 15
BP 3953
EP 3963
DI 10.1023/A:1004644728764
PG 11
WC Materials Science, Multidisciplinary
SC Materials Science
GA 149DZ
UT WOS:000077591000023
ER
PT J
AU Cohen, VI
Zeeberg, BR
Boulay, SF
Sood, VK
Rayeq, MR
Danesh, RA
McPherson, DW
Reba, RC
AF Cohen, VI
Zeeberg, BR
Boulay, SF
Sood, VK
Rayeq, MR
Danesh, RA
McPherson, DW
Reba, RC
TI In vivo competition studies of Z-(-,-)-[I-125]IQNP against
3-quinuclidinyl 2-(5-bromothienyl)-2-thienylglycolate (BrQNT)
demonstrating in vivo m2 muscarinic subtype selectivity for BrQNT
SO JOURNAL OF MOLECULAR NEUROSCIENCE
LA English
DT Article
DE Alzheimer's disease; muscarinic subtype neuroreceptors; PET; SPECT
ID IODINE-125-LABELED 1-AZABICYCLO<2.2.2>OCT-3-YL
ALPHA-HYDROXY-ALPHA-(1-IODO-1-PRO; EMISSION COMPUTED-TOMOGRAPHY;
AUTORADIOGRAPHIC EVIDENCE; ALZHEIMERS-DISEASE; RAT-BRAIN; CHOLINERGIC
RECEPTORS; ACETYLCHOLINE-RECEPTORS; ISOMERS; INVIVO; BINDING
AB Alzheimer's disease (AD) involves selective loss of muscarinic m2, but not m1, subtype neuroreceptors in cortical and hippocampal regions of the human brain. Until recently, emission tomographic study of the loss of m2 receptors in AD has been limited by the absence of available m2-selective radioligands that can penetrate the blood-brain barrier. We now demonstrate the in vivo m2 selectivity of an analog of (R)-QNB, 3-quinuclidinyl 2-(5-bromothienyl)-2-thienylglycolate (BrQNT), by dissection and autoradiographic studies of the in vivo inhibition of radioiodinated Z-1-azabicyclo [2.2.2]oct-3-yl alpha-hydroxy-alpha-(1-iodo-1-propen-3-yl)-alpha-phenyl- acetate (Z-(-,-)-[I-125]IQNP) binding by unlabeled BrQNT in rat brain. In the absence of BrQNT, Z-(-,-)[I-125]IQNP labels brain regions containing muscarinic receptors, with an enhanced selectivity for the m2 subtype. In the presence of 60-180 nmol of co-injected racemic BrQNT, Z-(-,-)-[I-125]IQNP labeling in those brain regions containing predominantly m2 subtype is reduced to background levels, while levels of radioactivity in areas not enriched in the m2 subtype do not significantly decrease. We conclude that BrQNT is m2-selective in vivo, and that [Br-76]BrQNT, or a radiofluorinated analog, may be of potential use in positron emission tomographic (PET) study of the loss of m2 receptors in AD. In addition, a radioiodinated analog may be of potential use in single photon emission tomographic (SPECT) studies.
C1 George Washington Univ, Med Ctr, Sect Radiopharmaceut Chem, Washington, DC 20037 USA.
Oak Ridge Natl Lab, Nucl Med Grp, Oak Ridge, TN 37831 USA.
Univ Chicago, Dept Radiol, Nucl Med Sect, Chicago, IL 60637 USA.
RP Cohen, VI (reprint author), George Washington Univ, Med Ctr, Sect Radiopharmaceut Chem, Walter G Ross Hall,2300 Eye St NW, Washington, DC 20037 USA.
RI Sood, Vinay/B-7109-2008
FU NINDS NIH HHS [NS22215]
NR 33
TC 4
Z9 4
U1 1
U2 1
PU HUMANA PRESS INC
PI TOTOWA
PA 999 RIVERVIEW DRIVE SUITE 208, TOTOWA, NJ 07512 USA
SN 0895-8696
J9 J MOL NEUROSCI
JI J. Mol. Neurosci.
PD AUG
PY 1998
VL 11
IS 1
BP 1
EP 9
DI 10.1385/JMN:11:1:1
PG 9
WC Biochemistry & Molecular Biology; Neurosciences
SC Biochemistry & Molecular Biology; Neurosciences & Neurology
GA 139AH
UT WOS:000077004900001
PM 9826782
ER
PT J
AU Parpura, V
Tong, W
Yeung, ES
Haydon, PG
AF Parpura, V
Tong, W
Yeung, ES
Haydon, PG
TI Laser-induced native fluorescence (LINF) imaging of serotonin depletion
in depolarized neurons
SO JOURNAL OF NEUROSCIENCE METHODS
LA English
DT Article
DE serotonin; native-fluorescence; UV imaging; retzius; leech
ID IDENTIFIED LEECH NEURONS; MOTOR-NERVE TERMINALS; FROG
NEUROMUSCULAR-JUNCTION; CAPILLARY ELECTROPHORESIS; SYNAPTIC
TRANSMISSION; TRANSMITTER RELEASE; VESICLE TURNOVER; CULTURE;
EXOCYTOSIS; CELLS
AB Since certain neurotransmitters exhibit native fluorescence we call monitor this property to disclose intracellular changes that result from neurotransmitter release. Isolated Retzius neurons of the leech are known to release serotonin (5-HT) during depolarization. Using intensified CCD technology coupled with UV laser (305 nm) excitation we observed depolarization and calcium-dependent reductions in native fluorescence in the axon, as well as in the cortex of the cell body. When taken together with data obtained from single-cell capillary electrophoresis, we demonstrate that this laser-induced native fluorescence can be reliably used to study spatial and temporal changes in intracellular transmitter content that accompany calcium-dependent secretion. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Iowa State Univ, Dept Zool & Genet, Lab Cellular Signaling, Ames, IA 50011 USA.
Iowa State Univ, US DOE, Ames Lab, Lab Cellular Signaling, Ames, IA 50011 USA.
RP Haydon, PG (reprint author), Iowa State Univ, Dept Zool & Genet, Lab Cellular Signaling, Rm 339 Sci 2, Ames, IA 50011 USA.
EM pghaydon@iastate.edu
RI Parpura, Vladimir/A-1242-2010
OI Parpura, Vladimir/0000-0002-4643-2197
FU NINDS NIH HHS [NS24233]
NR 32
TC 20
Z9 21
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0165-0270
J9 J NEUROSCI METH
JI J. Neurosci. Methods
PD AUG 1
PY 1998
VL 82
IS 2
BP 151
EP 158
DI 10.1016/S0165-0270(98)00056-9
PG 8
WC Biochemical Research Methods; Neurosciences
SC Biochemistry & Molecular Biology; Neurosciences & Neurology
GA 113LV
UT WOS:000075553200004
PM 9700687
ER
PT J
AU Green, PF
Barbour, JC
AF Green, PF
Barbour, JC
TI Effect of homopolymer host chain relaxations on the translational
diffusion of a diblock copolymer
SO JOURNAL OF NON-CRYSTALLINE SOLIDS
LA English
DT Article; Proceedings Paper
CT 3rd International Discussion Meeting on Relaxations in Complex Systems
CY JUN 30-JUL 11, 1997
CL VIGO, SPAIN
SP J Non Crystalline Solids
ID BLOCK COPOLYMERS; DYNAMICS; BLENDS; MELTS
AB The effect of the dynamics of polystyrene (PS) host chains on the overall translational diffusion of a diblock copolymer of polystyrene and polymethacrylate (ps-b-pmma) of degree of polymerization, N-c = 262, was investigated. Measurements of the diffusion coefficient of the diblock copolymer, Dps-pmma, into PS hosts of varying molecular weight, P, were performed using forward recoil spectrometry. These diffusion coefficients were orders of magnitude less than those of PS chains of the same degree of polymerization diffusing into the same environments. While Dps-pmma(PS) was independent of P for P > 2 x 10(5), it increased for P < 2 x 10(5). These results are interpreted in light of constraint release models. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Texas, Texas Mat Inst, Dept Chem Engn, Austin, TX 78712 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Green, PF (reprint author), Univ Texas, Texas Mat Inst, Dept Chem Engn, Austin, TX 78712 USA.
NR 14
TC 0
Z9 0
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3093
J9 J NON-CRYST SOLIDS
JI J. Non-Cryst. Solids
PD AUG
PY 1998
VL 235
BP 640
EP 644
DI 10.1016/S0022-3093(98)00665-6
PG 5
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA 118LC
UT WOS:000075838800105
ER
PT J
AU Totemeier, TC
Pahl, RG
Hayes, SL
Frank, SM
AF Totemeier, TC
Pahl, RG
Hayes, SL
Frank, SM
TI Characterization of corroded metallic uranium fuel plates
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
AB A brief background on the history of the corrosion of uranium metal fuel plates from the Zero Power Physics Reactor (ZPPR) and the findings of a recent characterization of the corrosion are presented. The characterization encompassed visual examination, metallography, scanning electron microscopy, and X-ray diffraction. Corrosion of the plates has been observed essentially since their manufacture. The corrosion was found to have both general and localized forms. A black powder corrosion product associated with areas of localized attack was determined to be UH3, while the remainder of the corrosion product was UO2+x. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
C1 Argonne Natl Lab, Idaho Falls, ID 83403 USA.
RP Totemeier, TC (reprint author), Argonne Natl Lab, POB 2528, Idaho Falls, ID 83403 USA.
RI Frank, Steven/B-9046-2017; Hayes, Steven/D-8373-2017
OI Frank, Steven/0000-0001-8259-6722; Hayes, Steven/0000-0002-7583-2069
NR 13
TC 6
Z9 6
U1 1
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD AUG
PY 1998
VL 256
IS 2-3
BP 87
EP 95
DI 10.1016/S0022-3115(98)00448-6
PG 9
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 112KQ
UT WOS:000075494200001
ER
PT J
AU Mauthe, RJ
Sideras-Haddad, E
Turteltaub, KW
Bench, G
AF Mauthe, RJ
Sideras-Haddad, E
Turteltaub, KW
Bench, G
TI Quantitative imaging microscopy for the sensitive detection of
administered metal containing drugs in single cells and tissue slices -
a demonstration using platinum based chemotherapeutic agents
SO JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
LA English
DT Article
DE cisplatin; carboplatin; nuclear microscopy; particle induced X-ray
emission (PIXE); single cell analysis; quantitative metal detection
ID NUCLEAR MICROPROBE; ZINC CONTENT; DNA ADDUCTS; RAT-KIDNEY; CISPLATIN;
COPPER; BINDS; PIXE; NEPHROTOXICITY; MICROANALYSIS
AB We describe the use of Nuclear microscopy (microbeam PIXE) for the quantitative micron scale analysis of platinum based chemotherapeutic agents in individual cells and tissue slices. We demonstrate that microbeam PIXE has the sensitivity and accuracy to quantitatively measure the uptake of the chemotherapeutic agent cis-diamminedichloroplatinum(II) (cisplatin) and monitor other endogenous metal contents in single cells in a time- and dose-dependent fashion. Additionally, the technique can quantitatively image therapeutic levels of cisplatin and cisplatin analogs including cis-diammine[1,1-cyclobutanedicarboxylato]platinum(II) (carboplatin) in tissues from an animal model. This quantitative imaging microscopy has general application for the sensitive measurement of metal containing drugs/compounds at the cellular level and allows the study of cellular distribution and mechanism of action related to toxic response and cell function. (C) 1998 Elsevier Science B.V. All rights reserved.
C1 Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA.
Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA.
RP Bench, G (reprint author), Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA.
FU NIEHS NIH HHS [ESO9705]
NR 31
TC 12
Z9 12
U1 1
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0731-7085
J9 J PHARMACEUT BIOMED
JI J. Pharm. Biomed. Anal.
PD AUG
PY 1998
VL 17
IS 4-5
BP 651
EP 663
DI 10.1016/S0731-7085(97)00225-2
PG 13
WC Chemistry, Analytical; Pharmacology & Pharmacy
SC Chemistry; Pharmacology & Pharmacy
GA 102LQ
UT WOS:000074926200006
PM 9682148
ER
PT J
AU Zhu, YT
Peterson, EJ
Baldonado, PS
Coulter, JY
Peterson, DE
Mueller, FM
AF Zhu, YT
Peterson, EJ
Baldonado, PS
Coulter, JY
Peterson, DE
Mueller, FM
TI Synthesis and characterization of the new compound EuBa4Cu3O8.5+delta
SO JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
LA English
DT Article
DE Eu143, Rietveld refinement; crystal structure, space group, cuprate
ID SYSTEM
AB A new compound, EuBa4Cu3O8.5+delta (Eu143) was synthesized from precursors Eu2O3, BaO2 and CuO at 1000 degrees C in an oxygen atmosphere. The oxygen stoichiometric value delta was found to be 0.83 by iodometric titration. Rietveld refinement of X-ray powder diffraction data showed that the P23 space group yielded a better fit than the Pm3 space group. Pm3 has been found to give a satisfactory fit to X-ray and neutron diffraction data of other 143 compounds. An isotropic temperature factor for the O3 and O4 sites was also refined. Our refinement showed that Eul43 has a cubic unit cell with a lattice parameter of 8.1677 +/- 0.00004 Angstrom. SQUID measurement indicated that this new compound was not superconductive down to 4 K. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Mueller, FM (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, STC Mail Stop K763, Los Alamos, NM 87545 USA.
RI Zhu, Yuntian/B-3021-2008
OI Zhu, Yuntian/0000-0002-5961-7422
NR 9
TC 5
Z9 5
U1 1
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0022-3697
J9 J PHYS CHEM SOLIDS
JI J. Phys. Chem. Solids
PD AUG
PY 1998
VL 59
IS 8
BP 1331
EP 1336
DI 10.1016/S0022-3697(98)00034-1
PG 6
WC Chemistry, Multidisciplinary; Physics, Condensed Matter
SC Chemistry; Physics
GA 115CK
UT WOS:000075645800023
ER
PT J
AU Alton, GD
Beene, JR
AF Alton, GD
Beene, JR
TI The Holifield Radioactive Ion Beam Facility at the Oak Ridge National
Laboratory: Present status and future plans
SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
LA English
DT Article; Proceedings Paper
CT International Workshop on Physics with Radioactive Nuclear Beams
CY JAN 12-17, 1998
CL PURI, INDIA
SP Saha Inst Nucl Phys, Variable Energy Cyclotron Ctr, Calcutta, India, Govt India, Dept Sci & Technol
AB The Holifield Radioactive Ion Beam Facility is a first-generation national user facility for nuclear physics and nuclear astrophysics research with radioactive ion beams (RIBs). The reconfiguration, construction and equipment-commissioning phases have been completed and the beam development programme is in progress. In this paper, descriptions of the facility and newly implemented experimental equipment for use in the nuclear and astrophysics programmes will be given and an outline of the initial experimental programme will be presented. Special target/ion source related problems, endemic to the production of specific short-lived RIBs will be discussed. In addition, plans, which involve either a 200 MeV or a 1 GeV proton-linac driver for a second-generation isotope separator on-line facility, will be presented.
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Alton, GD (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA.
NR 11
TC 48
Z9 48
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0954-3899
J9 J PHYS G NUCL PARTIC
JI J. Phys. G-Nucl. Part. Phys.
PD AUG
PY 1998
VL 24
IS 8
BP 1347
EP 1359
DI 10.1088/0954-3899/24/8/006
PG 13
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 109MG
UT WOS:000075325900006
ER
PT J
AU Cortina-Gil, MD
Pakou, A
Alamanos, N
Mittig, W
Roussel-Chomaz, P
Auger, F
Barrette, J
Blumenfeld, Y
Casandjian, JM
Chartier, M
Dietrich, F
Fekou-Youmbi, V
Fernandez, B
Frascaria, N
Gillibert, A
Laurent, H
Lepine-Szily, A
Orr, N
Pascalon, V
Scarpaci, JA
Sida, JL
Suomijarvi, T
AF Cortina-Gil, MD
Pakou, A
Alamanos, N
Mittig, W
Roussel-Chomaz, P
Auger, F
Barrette, J
Blumenfeld, Y
Casandjian, JM
Chartier, M
Dietrich, F
Fekou-Youmbi, V
Fernandez, B
Frascaria, N
Gillibert, A
Laurent, H
Lepine-Szily, A
Orr, N
Pascalon, V
Scarpaci, JA
Sida, JL
Suomijarvi, T
TI Charge-exchange reaction with light neutron-rich beams
SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
LA English
DT Article; Proceedings Paper
CT International Workshop on Physics with Radioactive Nuclear Beams
CY JAN 12-17, 1998
CL PURI, INDIA
SP Saha Inst Nucl Phys, Variable Energy Cyclotron Ctr, Calcutta, India, Govt India, Dept Sci & Technol
ID GAMOW-TELLER STRENGTH; ENERGY-DEPENDENCE; HALO STRUCTURE; MODEL;
SCATTERING; NUCLEUS
AB The charge exchange reaction p(He-6, Li-6)n was studied in reverse kinematics with a secondary He-6 beam at 41.6 MeV/nucleon. The transitions connecting the ground states and the one leading from the ground state of 6He to its isobaric analogue state in 6Li have been measured and analysed. Their ratio is a measure of the relative strength of the two components of the exchange interaction, V-tau and V-sigma tau. No clear signature of a halo structure is found from this ratio, since it is found to be compatible with existing systematics for stable T = 1 nuclei. The sensitivity of the (p,n) charge exchange angular distributions to the nuclear interaction potential and to the rms radii of the density distribution of He-6 is studied.
C1 GANIL, DSM, CEA, IN2P3,CNRS, F-14021 Caen, France.
CEA, DSM, DAPNIA, SPHN Saclay, F-91191 Gif Sur Yvette, France.
McGill Univ, Foster Radiat Lab, Montreal, PQ H3A 2B1, Canada.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
IPN, IN2P3, CNRS, F-91406 Orsay, France.
DFN, IFUSP, BR-05315970 Sao Paulo, Brazil.
ISMRA Univ Caen, LPC, F-1405 Caen, France.
Univ Ioannina, Dept Phys, GR-45110 Ioannina, Greece.
RP Cortina-Gil, MD (reprint author), GSI Darmstadt, Postfach 110552, D-64220 Darmstadt, Germany.
RI Lepine-Szily , Alinka/I-3325-2012; Cortina-Gil, Dolores/H-9626-2015
OI Lepine-Szily , Alinka/0000-0001-6640-8824; Cortina-Gil,
Dolores/0000-0001-7672-9912
NR 22
TC 1
Z9 1
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0954-3899
EI 1361-6471
J9 J PHYS G NUCL PARTIC
JI J. Phys. G-Nucl. Part. Phys.
PD AUG
PY 1998
VL 24
IS 8
BP 1547
EP 1552
DI 10.1088/0954-3899/24/8/032
PG 6
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 109MG
UT WOS:000075325900032
ER
PT J
AU Chang, SJ
AF Chang, SJ
TI Probability of fracture and life extension estimate of the high-flux
isotope reactor vessel
SO JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
LA English
DT Article
AB The state of the vessel steel embrittlement as a result of neutron irradiation can be measured by its increase in ductile-brittle transition temperature (DBTT)for fracture, often denoted by RTNDT for carbon steel. This transition temperature can be calibrated by the drop-weight rest and, sometimes, by the Charpy impact test. The life extension for the high-flux isotope reactor (HFIR) vessel is calculated by using the method of fracture mechanics that is incorporated with the effect of the DBTT change. The failure probability of the HEIR vessel is limited as the life of the vessel by the reactor core melt probability of 10(-4). The operating safety of the reactor is ensured by periodic hydrostatic pressure test (hydrotest). The hydrotest is performed in order to determine a safe vessel static pressure. The fracture probability as a result of the hydrostatic pressure test is calculated and is used to determine the life of the vessel. Failure to perform hydrotest imposes the limit on the life of the vessel. The conventional method of fracture probability calculations such as that used by the NRC-sponsored PRAISE CODE and the FAVOR CODE developed in this Laboratory are based on the Monte Carlo simulation. Heavy computations are required. An alternative method of fracture probability calculation by direct probability integration is developed in this paper. The present approach offers simple and expedient ways to obtain numerical results without losing any generality. This approach provides a clear analytical expression on the physical random variables to be integrated, yet requires much less computation time. In this paper, numerical results on I) the probability of vessel fracture, 2) the hydrotest time interval, and 3) the hydrotest pressure as a result of the DBTT increase are obtained. Limiting the probabilities of the vessel fracture as a result of hydrotest to 10-4 implies that the reactor vessel life can be extended up to 50 EFPY (100 MW) with the minimum vessel operating temperature equal to 85 degrees F.
C1 Oak Ridge Natl Lab, Res Reactors Div, Oak Ridge, TN 37831 USA.
RP Chang, SJ (reprint author), Oak Ridge Natl Lab, Res Reactors Div, MS 6399,POB 2008, Oak Ridge, TN 37831 USA.
NR 5
TC 2
Z9 4
U1 0
U2 0
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0094-9930
J9 J PRESS VESS-T ASME
JI J. Press. Vessel Technol.-Trans. ASME
PD AUG
PY 1998
VL 120
IS 3
BP 290
EP 296
DI 10.1115/1.2842060
PG 7
WC Engineering, Mechanical
SC Engineering
GA 112TX
UT WOS:000075511200013
ER
EF