FN Thomson Reuters Web of Science™ VR 1.0 PT J AU CARNEY, KP CUMMINGS, DG AF CARNEY, KP CUMMINGS, DG TI THE APPLICATION OF MICRO-COLUMN SOLID-PHASE EXTRACTION TECHNIQUES FOR THE DETERMINATION OF RARE-EARTH ELEMENTS IN ACTINIDE CONTAINING MATRICES SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB The design and characterization of an argon segmented-solid phase extraction system is described A 200 ul volume micro-column has been constructed for the preconcentration of rare earth elements (REEs) from salt matrices containing uranium An inductively coupled plasma atomic emission spectrometer has been utilized for simultaneous detection of Sr, Y and the REEs (namely Ce, Ey, La, Nd, Pr, Sm) at levels ranging from 5- to 2000 ppm in LiCl/KCl samples containing U. Preconcentration factors of 100 fold have been demonstrated The precision linear dynamic range and column performance of the system will be presented. RP CARNEY, KP (reprint author), ARGONNE NATL LAB,POB 2528,IDAHO FALLS,ID 83402, USA. NR 5 TC 7 Z9 7 U1 2 U2 3 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 41 EP 49 DI 10.1007/BF02037611 PG 9 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600005 ER PT J AU ASHLEY, KR BALL, JR ABNEY, KD TURNER, R SCHROEDER, NC AF ASHLEY, KR BALL, JR ABNEY, KD TURNER, R SCHROEDER, NC TI BREAKTHROUGH VOLUMES OF TCO4- ON REILLEX(TM)-HPQ ANION-EXCHANGE RESIN IN A HANFORD DOUBLE SHELL TANK SIMULANT SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB The breakthrough volumes on Reillex(TM)-HPQ anion exchange resin columns for TcO4- solutions have been determined. The feed solutions were a Hanford Double Shell Tank Slurry (DSS) simulant of ionic strength (mu) of 6.22 M and a TcO4- of 5.00 x 10(-5) M and a 1:3 dilution of the DSS simulant, mu = 2.07 M, with a TcO4- of 1.67 x 10(-5) M. The DSS flow rates {mt simulant/(cross section area of column.min)} through the column varied from 0.19 to 20.5 cm/min. The 1% breakthrough volumes varied from 50.0 to 1.3 bed volumes (BV), respectively. The 1:3 DSS flow rate varied from 0.95 to 11.9 cm/min and had 1% breakthrough volumes ranging from 94 to 20 BV, respectively. At a flow rate of 1.0 cm/min, the breakthrough bed volumes are 10.2 and 95.8 BV for the DSS and 1:3 DSS solutions, respectively. Obviously, there is an advantage in processing the 1:3 dilution of the feed stream. C1 E TEXAS STATE UNIV,DEPT CHEM,COMMERCE,TX 75429. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 15 TC 12 Z9 12 U1 0 U2 1 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 71 EP 79 DI 10.1007/BF02037614 PG 9 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600008 ER PT J AU LEPEL, EA PRATT, SL ROBERTSON, DE THOMAS, CW HAGGARD, DL AF LEPEL, EA PRATT, SL ROBERTSON, DE THOMAS, CW HAGGARD, DL TI RADIOLOGICAL CHARACTERIZATION OF SPENT CONTROL ROD ASSEMBLIES SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB Three different spent control rods were obtained for direct-assay measurements and empirical sampling and analysis. They were: 1) a BWR cruciform control rod, 2) a PWR rod-cluster control assembly, and 3) a burnable poison-rod assembly. The dominant activity of the BWR cruciform control rod and the PWR burnable poison-rod assembly is Co-60, whereas the PWR rod-cluster control assembly is dominated not only by Co-60, but also by Ag-108m and Ag-110m, which are found in the Ag-ln-Cd alloy of the absorber rods. The radionuclide inventories calculated for the three spent control rods from the empirical sampling data agree very well with data determined from the two direct assay methodologies. The concentration of Ag-108m in the rod-cluster control assembly will have to be considered when these types of spent control rods are prepared for waste disposal. RP LEPEL, EA (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 6 TC 1 Z9 1 U1 0 U2 2 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 81 EP 94 DI 10.1007/BF02037615 PG 14 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600009 ER PT J AU DAY, RS VIGIL, AR AF DAY, RS VIGIL, AR TI DEVELOPMENT OF ONLINE EDXRF TO MONITOR ACTINIDE CONTAMINATED WASTE STREAMS SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect ID PROCESS ANALYTICAL-CHEMISTRY AB A commercially available on-line energy dispersive x-ray fluorescence (EDXRF) system has been modified for glove box operations and installed on the Advanced Testing Line for Actinide Separations (ATLAS) at Los Alamos. The goal is to quantitatively monitor actinides and metal impurities in an anion-exchange effluent to obtain near-real-time chemical information. Because of recent compliance issues, metals listed in the Resource Conservation and Recovery Act (RCRA) and other low level radioactive components are also being analyzed. Initial experiments on how pre concentration techniques can be applied to on-line EDXRF measurements for improved detection limits have also been conducted An overview of these developments is presented in this paper. RP DAY, RS (reprint author), LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545, USA. NR 12 TC 4 Z9 4 U1 0 U2 0 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 107 EP 115 DI 10.1007/BF02037617 PG 9 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600011 ER PT J AU MARSH, SF SVITRA, ZV BOWEN, SM AF MARSH, SF SVITRA, ZV BOWEN, SM TI DISTRIBUTION OF 14 ELEMENTS FROM 2 SOLUTIONS SIMULATING HANFORD HLW TANK 102-SY (ACID-DISSOLVED SLUDGE AND ACIDIFIED SUPERNATE) ON 4 CATION-EXCHANGE RESINS AND 5 ANION-EXCHANGE RESINS HAVING DIFFERENT FUNCTIONAL-GROUPS SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB As part of the Tank Waste Remediation System program at Los Alamos, we evaluated a series of cation exchange and anion exchange resins for their ability to remove hazardous components from radioactive high-level waste (HLW). The anion exchangers were Reillex(TM) HPQ, a polyvinylpyridine resin, and four strong-base polystyrene resins having trimethyl, triethyl tripropyl, and tributyl amine as their respective functional groups. The cation exchange resins included Amberlyst(TM) 15 and Amberlyst XN-1010 with sulfonic acid functionality, Duolite(TM) C-467 with phosphonic acid functionality, and polyfunctional Diphonix(TM) with diphosphonic add, sulfonic add, and carboxylic acid functionalities. We measured the distributions of 14 elements on these resins from solutions simulating acid-dissolved sludge (pH 0.6) and acidified supernate (pH 3.5) from underground storage tank 102-SY at the Hanford Reservation near Richland, Washington, USA. To these simulants, we added the appropriate radionuclides and used gamma spectrometry to measure fission products (Ce, Cs, Sr, Tc, and Y), actinides (U, Pu, and Am), and matrix elements (Cr, Co, Fe, Mn, Zn, and Zr). For each of the 252 element/resin/solution combinations, distribution coefficients (Kds) were measured for dynamic contact periods of 30 minutes, 2 hours, and 6 hours to obtain information about sorption kinetics from these complex media. Because we measured the sorption of many different elements, the tabulated results indicate which unwanted elements are most likely to interfere with the sorption of elements of special interest. On the basis of these 756 measured Kd values, we conclude that some of the tested resins appear suitable for partitioning hazardous components from Hanford HLW. C1 LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. RP MARSH, SF (reprint author), SANDIA NATL LABS, POB 5800, ALBUQUERQUE, NM 87185 USA. NR 10 TC 13 Z9 13 U1 1 U2 3 PU AKADEMIAI KIADO RT PI BUDAPEST PA PRIELLE K U 19, PO BOX 245,, H-1117 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 117 EP 131 DI 10.1007/BF02037618 PG 15 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600012 ER PT J AU CRAIN, JS SMITH, LL YAEGER, JS ALVARADO, JA AF CRAIN, JS SMITH, LL YAEGER, JS ALVARADO, JA TI DETERMINATION OF LONG-LIVED ACTINIDES IN SOIL LEACHATES BY INDUCTIVELY-COUPLED PLASMA - MASS-SPECTROMETRY SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect ID SAMPLES; PU-240; TC-99; RATIO AB Inductively coupled plasma - mass spectrometry (ICP-MS) was used to concurrently determine multiple long-lived (t(1/2) > 10(4) y) actinide isotopes in soil leachates. Ultrasonic nebulization was found to maximize instrument sensitivity. Instrument detection limits for actinides in solution ranged from 50 mBq L(-1) (Pu-239) to 2 mu Bq L(-1) (U-235). Hydride adducts of Th-232 and U-238 interfered with the determinations of U-233 and Pu-239; thus, extraction chromatography was used to concentrate the analytes and separate uranium from the other actinides in advance of mass spectrometric determination. Alpha spectrometric determinations of Th-230, Pu-239, and the U-234/U-238 activity ratio in soil leachates compared well with ICP-MS determinations; however, there were some small systematic differences (ca. 10%) between ICP-MS and alpha-spectrometric determinations of U-234 and U-238 activities. These differences were attributed to the use of different isotope dilution spikes for ICP-MS and alpha-spectrometry. RP CRAIN, JS (reprint author), ARGONNE NATL LAB, 9700 S CASS AVE, ARGONNE, IL 60439 USA. NR 17 TC 41 Z9 41 U1 1 U2 3 PU AKADEMIAI KIADO RT PI BUDAPEST PA PRIELLE K U 19, PO BOX 245,, H-1117 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 133 EP 139 DI 10.1007/BF02037619 PG 7 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600013 ER PT J AU SMITH, LL CRAIN, JS YAEGER, JS HORWITZ, EP DIAMOND, H CHIARIZIA, R AF SMITH, LL CRAIN, JS YAEGER, JS HORWITZ, EP DIAMOND, H CHIARIZIA, R TI IMPROVED SEPARATION METHOD FOR DETERMINING ACTINIDES IN SOIL SAMPLES SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect ID ION-EXCHANGE RESIN; EXTRACTION CHROMATOGRAPHY; ACID DEPENDENCIES; METAL-IONS; PRECONCENTRATION; MEDIA AB Radionuclides have been identified as a significant source of contamination at many United States Department of Energy (DOE) sites. As a result, reliable and accurate methods to determine actinide content in environmental samples have become increasingly important. Therefore,an improved analytical scheme using a series of actinide-selective extraction chromatography (TN . Spec(TM), Teva . Spec(TM)) and ion-exchange (Diphonix(TM)) resins was designed to satisfy the requirements of both alpha spectrometry and inductively coupled plasma mass spectrometry (ICP-MS). Alpha spectrometry required the sequential isolation of the actinides, whereas ICP-MS required only a group separation of the actinides. The separation schemes were designed to allow analysis of the actinides in soil, whether the soils were acid leached or totally dissolved through fusion. For those analytes present as contaminants (Pu-239/240 Am-241), the laboratory results agreed favorably With the accepted values for several reference soils. However, for the acid digestion procedure, the results for matrix constituents (U-238, U-234, Th-232) were quite low because the silicate matrix was not decomposed. The sodium hydroxide fusion technique described allowed accurate analysis of both matrix constituents and contaminants because a total dissolution was achieved. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP SMITH, LL (reprint author), ARGONNE NATL LAB,DIV CHEM TECHNOL,ANALYT CHEM LAB,ARGONNE,IL 60439, USA. NR 17 TC 51 Z9 52 U1 3 U2 16 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 151 EP 156 DI 10.1007/BF02037621 PG 6 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600015 ER PT J AU ALVARADO, JS ORLANDINI, KA ERICKSON, MD AF ALVARADO, JS ORLANDINI, KA ERICKSON, MD TI RAPID-DETERMINATION OF RADIUM ISOTOPES BY ALPHA-SPECTROMETRY SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect ID WATER; SAMPLES AB An efficient analytical method for the determination of low-levels of Ra-226 and Ra-224 by alpha spectrometry is described. A cation exchange column was used to separate the analyte from other constituents in the sample (1-50 mL). After preconcentration and separation, the radium was electrodeposited onto a stainless steel disc from a solution of ammonium oxalate and hydrochloric acid. The electrodeposition was accomplished by the addition of platinum in microgram amounts. Linear responses were greater than two orders of magnitude. Detection limits of the procedure. taken as three times the standard deviation of several reagent blank analyses, were (1.8 +/- 0.3) x 10(-4) Bq and (2.9 +/- 0.3) x 10(-4) Bq for Ra-226 and Ra-224, respectively. Recoveries of Ra-226 and Ra-224 ranged from 90% to 100% when samples of drinking water, well water, and dissolved bones were analyzed. Precision was calculated to be less than 5% for the determination of Ra-226. Matrix effects were studied for salts of barium, magnesium, iron, and calcium. RP ALVARADO, JS (reprint author), ARGONNE NATL LAB,DIV ENVIRONM RES,ARGONNE,IL 60439, USA. NR 13 TC 25 Z9 26 U1 1 U2 8 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 163 EP 172 DI 10.1007/BF02037623 PG 10 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600017 ER PT J AU ESPINOSA, G SILVA, RJ AF ESPINOSA, G SILVA, RJ TI CR-39 NUCLEAR TRACK DETECTORS FOR IDENTIFICATION OF PU-239 AND AM-241 ALPHA-CONTAMINATION SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB Nuclear Track Detectors (NTD's) are used as passive systems to detect the alpha contamination on nat or semirough surfaces. The procedure for the application of these devices is simple because the detector needs only to be placed on the area to be surveyed for a short period of time, collected and chemically processed to develop the alpha tracks. For the quantification of the results, it is necessary to have a calibration procedure. This paper presents the response of CR-39 (allyl diglycol carbonate), from American Acrylics and Pershore Companies, to alpha particles from Pu-239 (5.15 MeV) and Am-241 (5.48 MeV). The methods of etching and counting are outlined, along with the achievable linearity, efficiency and reproducibility. The sensitivity to low activity levels is also discussed. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP ESPINOSA, G (reprint author), UNIV NACL AUTONOMA MEXICO,INST FIS,APARTADO POSTAL 20-364,MEXICO CITY 01000,DF,MEXICO. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 185 EP 189 DI 10.1007/BF02037626 PG 5 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600020 ER PT J AU KAYE, JH STREBIN, RS ORR, RD AF KAYE, JH STREBIN, RS ORR, RD TI RAPID, QUANTITATIVE-ANALYSIS OF AMERICIUM, CURIUM AND PLUTONIUM ISOTOPES IN HANFORD SAMPLES USING EXTRACTION CHROMATOGRAPHY AND PRECIPITATION PLATING SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect ID ALPHA-SPECTROMETRY; ACTINIDES AB Recently developed methods for the rapid, quantitative analysis of americium (Am), curium (Cm), and plutonium (Pu) isotopes in Hanford soil sludge, and waste-tank samples are described After dissolution, dilutions are made as necessary based on alpha-energy analysis of a small aliquot of the original solution. Isotopic tracers are then added and Am-Cm and Pu are separated by extraction chromatography, coprecipitated with neodymium fluoride, and counted Examples of alpha spectra are given, and results obtained for Hanford sludge samples are presented. RP KAYE, JH (reprint author), PACIFIC NW LAB, DEPT CHEM SCI, RICHLAND, WA 99352 USA. NR 4 TC 21 Z9 22 U1 0 U2 1 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 191 EP 196 DI 10.1007/BF02037627 PG 6 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600021 ER PT J AU ESPINOSA, G SILVA, RJ AF ESPINOSA, G SILVA, RJ TI DETERMINATION OF ALPHA-CONTAMINATED SOIL PROFILES USING NUCLEAR TRACK DETECTORS SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB Nuclear Track Detectors (NTD's) are a useful option for in situ measurements of the distribution of alpha contamination as a function of soil depth. The contamination profile of alpha emitting elements, e.g. Pu, Am and U, can be determined by detecting their alpha emission at varying depths. This paper discusses a ''stake'' type device, containing strips of CR-39 (allyl diglycol carbonate) that can be inserted into the soil up to ten centimeters or more, depending on the firmness of the soil. The CR-39 is exposed directly to the contaminated soil for a few hours. The ''stake'' is then withdrawn from the soil, the plastic detectors recovered and the alpha tracks developed by chemical etching with KOH. The distribution of tracks can be used to determine the alpha contamination depth profile as well as for detecting hot spots. It has a sensitivity of less than a pCi/g of soil. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP ESPINOSA, G (reprint author), UNIV NACL AUTONOMA MEXICO,INST FIS,APARTADO POSTAL 20-364,MEXICO CITY 01000,DF,MEXICO. NR 9 TC 2 Z9 2 U1 0 U2 0 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 207 EP 212 DI 10.1007/BF02037629 PG 6 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600023 ER PT J AU GEHRKE, RJ WATTS, KD AMARO, CR AF GEHRKE, RJ WATTS, KD AMARO, CR TI FIELD PERFORMANCE-TEST OF PASS, AN INSTRUMENT FOR THE RAPID ASSAY OF PLUTONIUM AND OTHER GAMMA-RAY EMITTING RADIONUCLIDES SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB A field performance test was conducted at the INEL with the mobile Rapid Transuranic Monitoring Laboratory (RTML) that was developed for the analysis of samples from sites or facilities potentially contaminated with plutonium, other actinides, and gamma-ray emitting activation and fission-product radionuclides. ?he performance test and results are described for the Photon Analysis Spectrometer System (PASS), one of three RTML assay systems. This system consists of a thin-window, n-type Ge spectrometer, that automatically analyzes soil smear, and air particulate-filter samples for actinides emitting L x rays, and for activation and fission products that emit gamma rays. The measurements were blind and performed with 11-g soil samples gathered from the Cold Test Pit and with spiked samples containing known mixtures of Pu-239, Am-241, Co-60, and Cs-137. In the spiked samples the plutonium activity concentrations ranged from similar to 75 to similar to 500 pCi/g while the other radionuclides ranged from similar to 10 to similar to 130 pCi/g. Lower limits of detection (LLDs) were verified to be 1, 5, 5, and 40 pCi/g for Am-241, Co-60, Cs-137, and Pu-239, respectively. Results from the performance rest are presented. RP GEHRKE, RJ (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 9 TC 1 Z9 1 U1 0 U2 1 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 1 BP 221 EP 228 DI 10.1007/BF02037631 PG 8 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH446 UT WOS:A1995RH44600025 ER PT J AU ROBERTSON, DE SCHILK, AJ ABEL, KH LEPEL, EA THOMAS, CW PRATT, SL COOPER, EL HARTWIG, P KILLEY, RWD AF ROBERTSON, DE SCHILK, AJ ABEL, KH LEPEL, EA THOMAS, CW PRATT, SL COOPER, EL HARTWIG, P KILLEY, RWD TI CHEMICAL SPECIATION OF RADIONUCLIDES MIGRATING IN GROUNDWATERS SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB In order to more accurately predict the rates and mechanisms of radionuclide migration from low-level waste disposal facilities via groundwater transport, ongoing studies are being conducted at field sites at Chalk River Laboratories to identify and characterize the chemical speciation of mobile, long-lived radionuclides migrating in groundwaters. Large-volume water sampling techniques are being utilized to separate and concentrate radionuclides into particulate, cationic, anionic, and nonionic chemical forms. Most radionuclides are migrating as soluble, anionic species which appear to be predominately organoradionuclide complexes. Laboratory studies utilizing anion exchange chromatography have separated several anionically complexed radionuclides, e.g.,Co-60 and (106)RU, into a number of specific compounds or groups of compounds. Large-volume ultra-filtration experiments have shown that significant fractions of the radionuclides are being transported in these groundwaters in the form of macromolecules having molecular weights ranging from less than 3,000 to 100,000. C1 CHALK RIVER LABS, CHALK RIVER, ON K0K 1J0, CANADA. RP ROBERTSON, DE (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 2 BP 237 EP 252 DI 10.1007/BF02038420 PG 16 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH447 UT WOS:A1995RH44700002 ER PT J AU CLARK, SB AF CLARK, SB TI SEPARATION AND DETERMINATION OF RADIOSTRONTIUM IN CALCIUM-CARBONATE MATRICES OF BIOLOGICAL ORIGIN SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect ID CROWN-ETHER; EXTRACTION; STRONTIUM; SR-90 AB Radiostrontium is concentrated in the shells of mollusks and other animals due to the isomorphic substitution of strontium for calcium in the calcium carbonate shell matrix. Radiochemical separation of strontium from such matrices is difficult because of the chemical similarity between strontium and calcium This paper describes a technique using a commerically-available, solid-phase extractant to separate Sr-89 and Sr-90 from high concentrations of Ca2+. The extractant removes Sr(NO3)(2) from acidic nitrate media, and strontium activities are determined via conventional beta-counting techniques. This method has been used to process mollusk shells collected from contaminated reactor cooling ponds at the Savannah River Site and Chernobyl Nuclear Power Plant. RP CLARK, SB (reprint author), UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,PO DRAWER E,AIKEN,SC 29803, USA. NR 13 TC 15 Z9 15 U1 0 U2 3 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 2 BP 297 EP 302 DI 10.1007/BF02038427 PG 6 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH447 UT WOS:A1995RH44700009 ER PT J AU HAMAMO, H LANDSBERGER, S HARBOTTLE, G PANNO, S AF HAMAMO, H LANDSBERGER, S HARBOTTLE, G PANNO, S TI STUDIES OF RADIOACTIVITY AND HEAVY-METALS IN PHOSPHATE FERTILIZER SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB The enormous utilization of phosphate rock and super phosphate derived from it have the potential of being an important factor in the contamination of aquifers with alpha emitting radionuclides and heavy metals. Both rock phosphate and super phosphate contain substantial levels of natural uranium, amounting to hundreds of ppm. Our study has shown that whereas the uranium series in phosphate rock is nearly in secular equilibrium, in super phosphate the Ra-226 and its progeny are depleted by 60-70%. This is a result of the chemical processing of the rock phosphate. On the other hand the super phosphate is much more soluble and can be expected to release its radionuclides to the environment more rapidly than rock phosphate. The present study explores the release of radioisotopes and heavy metals from phosphate fertilizers. Extensive analytical use has been made of a germanium well-detector/Compton suppression system. C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. ILLINOIS STATE GEOL SURVEY,CHAMPAIGN,IL 61821. RP HAMAMO, H (reprint author), UNIV ILLINOIS,DEPT NUCL ENGN,214 NUCL ENGN LAB,103 S GOODWIN AVE,URBANA,IL 61801, USA. NR 9 TC 22 Z9 23 U1 0 U2 5 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 2 BP 331 EP 336 DI 10.1007/BF02038431 PG 6 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH447 UT WOS:A1995RH44700013 ER PT J AU REGO, JH SMITH, DK AF REGO, JH SMITH, DK TI THE DEVELOPMENT OF A VERSATILE FIELD PROGRAM FOR MEASURING TRITIUM IN REAL-TIME SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES LA English DT Article; Proceedings Paper CT 3rd International Conference on Methods and Applications of Radioanalytical Chemistry (MARC-III) CY APR 10-16, 1994 CL KAILUA KONA, HI SP Amer Nucl Soc, Div Isotopes & Radiat, Amer Nucl Soc, Div Biol & Med, Amer Nucl Soc, NO Calif Sect AB Robust sample handling and liquid scintillation counting (LSC) procedures have been developed to routinely monitor tritium in the field relative to the 20,000 pCi/L drinking water standard. This procedure allows tritium to be monitored hourly during 24 hour drilling operations at depths in the saturated zone potentially contaminated by sub-surface nuclear weapons testing at the Nevada Test Site. Using retrofitted, shock hardened, vibration damped counters and strict analytical protocols, tritium may be measured rapidly in the field under hostile conditions. Concentration standards and ''dead'' tritium backgrounds are prepared weekly in a central laboratory and delivered to remote drilling locations where they are recounted daily as a check on counter efficiency and calibration. Portable LSC counters are located in trailers and powered off a battery pack and line filter fed by mobile generator. The samples are typically groundwaters mixed with drilling fluids returned after circulation through a drill string. Fluids are aerated and de-foamed, filtered, mixed with scintillation cocktail and dark adapted before counting. ''Real-time'' monitoring affords drilling and field personnel early warning against intercepting down-gradient plumes of radioactivity. For routine operations, the tritium activity may not exceed a 10,000 pCi/L threshold. RP REGO, JH (reprint author), LAWRENCE LIVERMORE NATL LAB,DIV ISOTOPE SCI,LIVERMORE,CA 94550, USA. NR 5 TC 1 Z9 1 U1 0 U2 2 PU AKADEMIAI KIADO PI BUDAPEST PA PO BOX 245, H-1519 BUDAPEST, HUNGARY SN 0236-5731 J9 J RADIOAN NUCL CH AR JI J. Radioanal. Nucl. Chem.-Artic. PD JUL PY 1995 VL 194 IS 2 BP 389 EP 392 DI 10.1007/BF02038438 PG 4 WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA RH447 UT WOS:A1995RH44700020 ER PT J AU LINK, SO BOLTON, H THIEDE, ME RICKARD, WH AF LINK, SO BOLTON, H THIEDE, ME RICKARD, WH TI RESPONSES OF DOWNY BROME TO NITROGEN AND WATER SO JOURNAL OF RANGE MANAGEMENT LA English DT Article DE BROMUS TECTORUM L; BIOMASS; PHOTOSYNTHESIS; CONDUCTANCE; WATER-USE EFFICIENCY; NITROGEN USE EFFICIENCY ID USE EFFICIENCY; GAS-EXCHANGE; NUTRIENT USE; GROWTH; PHOTOSYNTHESIS; WHEAT; PLANTS; AVAILABILITY; ENVIRONMENT; CHEATGRASS AB Downy brome (Bromus tectorum L,) is an alien grass that dominates disturbed ground in shrub-steppe ecosystems of the western United States, Responses of downy brome to added nitrogen and water were evaluated using intact soil cores obtained from an old field, Gas exchange data were gathered at the leaf and canopy scales, Stomatal conductance and net photosynthesis rates were greater at the leaf scale than at the canopy scale, decreased with time from germination, and were weakly affected by treatments, Water-use efficiency was weakly related to time from germination and treatments, Biomass was greater in the nitrogen-plus-water (7.4 g) treatment, compared with water (3.6 g), nitrogen (4.5 g), and control (3.3 g) treatments, The leaf-area index varied Like biomass at the end of the experiment, Shoot nitrogen was the same in the nitrogen (2.5%) and nitrogen-plus-ater (2.5%) treatments, nearly twice the level in the control (1.5%) and water (1.3 Sb) treatments, Nitrogen-use efficiency was highest in the control (67) and water (80) treatments and lowest in the nitrogen (41) and nitrogen-plus-water (43) treatments, The most significant conclusion of this work is that gas exchange was strongly related to the time from germination and little affected by water and nitrogen while growth characters were strongly affected only when water and nitrogen were added together. RP LINK, SO (reprint author), PACIFIC NW LAB, CTR EARTH & ENVIRONM SCI, RICHLAND, WA 99352 USA. RI Bolton, Harvey/E-5583-2011 NR 45 TC 15 Z9 17 U1 0 U2 5 PU SOC RANGE MANAGEMENT PI DENVER PA 1839 YORK ST, DENVER, CO 80206 SN 0022-409X J9 J RANGE MANAGE JI J. Range Manage. PD JUL PY 1995 VL 48 IS 4 BP 290 EP 297 DI 10.2307/4002480 PG 8 WC Agriculture, Dairy & Animal Science; Ecology SC Agriculture; Environmental Sciences & Ecology GA RH224 UT WOS:A1995RH22400001 ER PT J AU TAO, J DU, JY KLEINHANS, FW CRITSER, ES MAZUR, P CRITSER, JK AF TAO, J DU, JY KLEINHANS, FW CRITSER, ES MAZUR, P CRITSER, JK TI THE EFFECT OF COLLECTION TEMPERATURE, COOLING RATE AND WARMING RATE ON CHILLING INJURY AND CRYOPRESERVATION OF MOUSE SPERMATOZOA SO JOURNAL OF REPRODUCTION AND FERTILITY LA English DT Article ID LIPID PHASE-TRANSITIONS; MAMMALIAN SPERM; EMBRYOS FROZEN; GLYCEROL; MEMBRANES; SURVIVAL AB The experiments presented here identify several factors that affect survival (motility) of cryopreserved mouse spermatozoa after freezing and thawing. Among these factors are: (i) the temperature at which spermatozoa are collected, (ii) the cooling rate to 0 degrees C and (iii) the warming rate from - 196 degrees C to ambient. When excised epididymides were cooled to near 0 degrees (1-4 degrees C) and spermatozoa collected and mixed with cryoprotectant at that temperature, motilities after subsequent freezing and thawing were 8-10 times higher than when the spermatozoa were collected from the epididymides at 22 degrees C. In addition, the survival rates of spermatozoa warmed at rates ranging from 150 to 2000 degrees C min(-1) were about five times higher than those in suspensions warmed at about 7500 degrees C min(-1). The combination of a low collection temperature and the lower warming rates resulted in approximately 50% motility relative to unfrozen controls. Motility was reduced to 6-8% when the collection temperature was 22 degrees C, and to approximately 10% when frozen suspensions of spermatozoa collected in the cold were rapidly warmed from - 196 degrees C. When spermatozoa collected at 22 degrees C were abruptly cooled to 0 degrees C, 40-80% of the cells suffered an irreversible loss of motility after warming. In contrast, when spermatozoa were cooled to 0 degrees C at 1 degrees C min(-1) and warmed (either rapidly or slowly), motilities were similar to those of uncooled controls (75-90%). These findings indicate sensitivity to cold shock. Finally, the addition of raffinose or sucrose to the suspending medium did not affect the survival of the spermatozoa cooled slowly, but it did increase the survival of spermatozoa that were rapidly cooled to 0 degrees C (55-60% versus 25-30%). C1 INDIANA UNIV PURDUE UNIV,DEPT PHYS,INDIANAPOLIS,IN 46202. INDIANA UNIV,SCH MED,DEPT PHYSIOL & BIOPHYS,INDIANAPOLIS,IN 46202. INDIANA UNIV,SCH MED,DEPT OBSTET & GYNECOL,INDIANAPOLIS,IN 46202. OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831. PURDUE UNIV,SCH VET MED,DEPT VET CLIN SCI,W LAFAYETTE,IN 47907. RP TAO, J (reprint author), METHODIST HOSP INDIANA INC,CRYOBIOL RES INST,1701 N SENATE BLVD,ROOM WILE HALL 611,INDIANAPOLIS,IN 46202, USA. FU NICHD NIH HHS [KO4-HD00980, 1R01 HD30274-01A2] NR 29 TC 37 Z9 39 U1 0 U2 4 PU J REPROD FERTIL INC PI CAMBRIDGE PA 22 NEWMARKET RD, CAMBRIDGE, ENGLAND CB5 8DT SN 0022-4251 J9 J REPROD FERTIL JI J. Reprod. Fertil. PD JUL PY 1995 VL 104 IS 2 BP 231 EP 236 PG 6 WC Reproductive Biology SC Reproductive Biology GA RM978 UT WOS:A1995RM97800009 PM 7473413 ER PT J AU HEBNER, GA GREENBERG, KE AF HEBNER, GA GREENBERG, KE TI OPTICAL DIAGNOSTICS IN THE GASEOUS ELECTRONICS CONFERENCE REFERENCE CELL SO JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY LA English DT Article; Proceedings Paper CT 47th Annual Gaseous Electronics Conference of the American-Physical-Society CY OCT 18-21, 1994 CL GAITHERSBURG, MD SP Amer Phys Soc, Div Atom Molec & Opt Phys DE ABSORPTION; ARGON; DISCHARGE; ELECTRIC FIELD; GASEOUS ELECTRONICS CONFERENCE REFERENCE CELL; HELIUM; LASER-INDUCED FLUORESCENCE; METASTABLE; PARALLEL PLATE; PLASMA PROCESSING; RADIO FREQUENCY ID CYCLOTRON RESONANCE PLASMA; LASER-INDUCED FLUORESCENCE; RADIOFREQUENCY DISCHARGES; GLOW-DISCHARGE; ION AB A number of laser-induced fluorescence and absorption spectroscopy studies have been conducted using Gaseous Electronics Conference Reference Cells. Laser-induced fluorescence has been used to measure hydrogen atom densities, to measure argon metastable spatial profiles, to determine the sheath electric field, and to infer the electron density and temperature. Absorption spectroscopy, using lamp sources and diode lasers, has been used to measure metastable atom densities in helium and argon discharges and fluorocarbon densities in silicon etching discharges. The experimental techniques and sample results of these investigations are reviewed. C1 UNIV NEW MEXICO, DEPT CHEM & NUCL ENGN, ALBUQUERQUE, NM 87131 USA. RP HEBNER, GA (reprint author), SANDIA NATL LABS, DEPT LASERS OPT & REMOTE SENSING 1128, TECH STAFF, MS 1423, ALBUQUERQUE, NM 87185 USA. NR 23 TC 4 Z9 4 U1 1 U2 2 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPERINTENDENT DOCUMENTS,, WASHINGTON, DC 20402-9325 USA SN 1044-677X J9 J RES NATL INST STAN JI J. Res. Natl. Inst. Stand. Technol. PD JUL-AUG PY 1995 VL 100 IS 4 BP 373 EP 382 DI 10.6028/jres.100.028 PG 10 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA TA246 UT WOS:A1995TA24600005 ER PT J AU MILLER, PA HEBNER, GA GREENBERG, KE POCHAN, PD ARAGON, BP AF MILLER, PA HEBNER, GA GREENBERG, KE POCHAN, PD ARAGON, BP TI AN INDUCTIVELY-COUPLED PLASMA SOURCE FOR THE GASEOUS ELECTRONICS CONFERENCE RF REFERENCE CELL SO JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY LA English DT Article; Proceedings Paper CT 47th Annual Gaseous Electronics Conference of the American-Physical-Society CY OCT 18-21, 1994 CL GAITHERSBURG, MD SP Amer Phys Soc, Div Atom Molec & Opt Phys DE GEC RF REFERENCE CELL; HIGH DENSITY PLASMAS; INDUCTIVELY COUPLED PLASMAS; LANGMUIR PROBES ID MULTIPLE STEADY-STATES; DISCHARGES AB In order to extend the operating range of the GEC RF Reference Cell, we developed an inductively coupled plasma source that replaced the standard parallel-plate upper-electrode assembly. Voltage and current probes, Langmuir probes, and an 80 GHz interferometer provided information on plasmas formed in argon, chlorine, and nitrogen at pressures from 0.1 Pa to 3 Pa. For powers deposited in the plasma from 20 W to 300 W, the source produced peak electron densities between 10(10)/cm(3) and 10(12)/cm(3) and electron temperatures near 4 eV. The electron density peaked on axis with typical full-width at half maximum of 7 cm to 9 cm. Discharges in chlorine and nitrogen had bimodal operation that was clearly evident from optical emission intensity. A dim mode occurred at low power and a bright mode at high power. The transition between modes had hysteresis. After many hours of high-power operation, films formed on electrodes and walls of one Cell. These deposits affected the dim-to-bright mode transition, and also apparently caused generation of hot electrons and increased the plasma potential. C1 UNIV NEW MEXICO, DEPT CHEM & NUCL ENGN, ALBUQUERQUE, NM 87131 USA. APPL PHYS INC, ALBUQUERQUE, NM 87110 USA. RP MILLER, PA (reprint author), SANDIA NATL LABS, DEPT LASER OPT & REMOTE SENSING, TECH STAFF, POB 5800, ALBUQUERQUE, NM 87185 USA. NR 10 TC 185 Z9 189 U1 0 U2 12 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPERINTENDENT DOCUMENTS,, WASHINGTON, DC 20402-9325 USA SN 1044-677X J9 J RES NATL INST STAN JI J. Res. Natl. Inst. Stand. Technol. PD JUL-AUG PY 1995 VL 100 IS 4 BP 427 EP 439 DI 10.6028/jres.100.032 PG 13 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA TA246 UT WOS:A1995TA24600009 ER PT J AU BRAKE, ML PENDER, JTP BUIE, MJ RICCI, A SONIKER, J AF BRAKE, ML PENDER, JTP BUIE, MJ RICCI, A SONIKER, J TI REACTIVE ION ETCHING IN THE GASEOUS ELECTRONICS CONFERENCE RF REFERENCE CELL SO JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY LA English DT Article; Proceedings Paper CT 47th Annual Gaseous Electronics Conference of the American-Physical-Society CY OCT 18-21, 1994 CL GAITHERSBURG, MD SP Amer Phys Soc, Div Atom Molec & Opt Phys DE DISCHARGE; ETCH DEPTH; ETCH RATE; ETCHING; GASEOUS ELECTRONICS; RADIO FREQUENCY; REACTIVE ION ETCHING AB This paper describes the results of using the GEC reference cell as a reactive ion etcher. Silicon wafers with layers of polysilicon and silicon dioxide on crystaline silicon patterned with photoresist have been investigated with fluorine and chlorine chemistries. Scanning electron microscopy (SEM), profilometry, and refraction techniques were used to determine the etch parameters such as etch rate, uniformity and selectivity. The discharges are in general monitored by measuring the optical emission spectroscopy and the bias voltages. For fluorine chemistries, etch rates ranged from 5 nm/min to 177 nm/min, and for chlorine chemistries, etch rates ranged from 25 nm/min to 90 nm/min. Depending upon the discharge and chemistry conditions, similar etch rates and etch patterns of different GEC cells were obtained. Etch rates and relative fluorine concentrations obtained from a commercial etcher were compared to the GEC reference cell and were found to be similar although the GEC cell generally gave lower etch rates than the commercial etcher. C1 SANDIA NATL LABS, DEPT LASER OPT & REMOTE SENSING, TECH STAFF, ALBUQUERQUE, NM 87185 USA. RP BRAKE, ML (reprint author), UNIV MICHIGAN, DEPT NUCL ENGN, ANN ARBOR, MI 48109 USA. NR 14 TC 7 Z9 7 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPERINTENDENT DOCUMENTS,, WASHINGTON, DC 20402-9325 USA SN 1044-677X J9 J RES NATL INST STAN JI J. Res. Natl. Inst. Stand. Technol. PD JUL-AUG PY 1995 VL 100 IS 4 BP 441 EP 448 DI 10.6028/jres.100.033 PG 8 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA TA246 UT WOS:A1995TA24600010 ER PT J AU MCCARLEY, RE HILSENBECK, SJ XIE, X AF MCCARLEY, RE HILSENBECK, SJ XIE, X TI AMORPHOUS PRECURSORS FOR LOW-TEMPERATURE PREPARATION OF CHEVREL PHASES M(X)MO(6)S(8) AND THEIR TUNGSTEN ANALOGS SO JOURNAL OF SOLID STATE CHEMISTRY LA English DT Article ID SUPERCONDUCTING PROPERTIES; HYDRODESULFURIZATION AB High-yield preparations of the amorphous ternary salts Na-2x(Mo6S8)Sx . yMeOH (with x = 1.0 to 1.5, y = 4 to 5) and Na-2.1 (W6S8)S-1.05. 5.4MeOH have been devised by reaction of M(6)Cl(12) (M = Mo or W) with NaSH and NaOBu in various ratios in refluxing n-BuOH for M = Mo and in refluxing MeCN for M = W. Characterization of these amorphous materials by chemical and spectroscopic methods (IR, Raman, PES) shows that the (M(6)S(8))(0) cluster units are present. Vacuum thermolysis of the amorphous Na-2x(Mo6S8)S-x . yMeOH first produces poorly crystalline NaMo6S8 by disproportionation at 800 degrees C and well-crystallized NaMo6S8 at greater than or equal to 900 degrees C. The amorphous tungsten compound disproportionates to W and WS2 at greater than or equal to 200 degrees C. Ion exchange of the sodium material in methanol with soluble M(2+) and M(3+) salts (M = Sn, Co, Ni, Pb, La, Ho) produces the M(2x/n)(n+)(Mo6S8)S-x . yMeOH compounds. For tungsten, only exchange with SnCl2 in THF was examined and resulted in Sn-x change with SnCl2 in THF was examined and resulted in Sn-x (W6S8)S-x . yMeOH. Conversion of Sn-x(Mo6S8)S-x . yMeOH to poorly crystalline Chevrel phase, SnMo6S8, was achieved by reduction under H-2 at 600 degrees C. Well-crystallized SnMo6S8 resulted at higher temperatures. Conversion of Sn-x(W6S8)S-x . yMeOH to SnW6S8 was not successful. (C) 1995 Academic Press, Inc. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. RP MCCARLEY, RE (reprint author), US DOE,AMES LAB,AMES,IA 50011, USA. NR 21 TC 28 Z9 28 U1 0 U2 9 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-4596 J9 J SOLID STATE CHEM JI J. Solid State Chem. PD JUL PY 1995 VL 117 IS 2 BP 269 EP 274 DI 10.1006/jssc.1995.1273 PG 6 WC Chemistry, Inorganic & Nuclear; Chemistry, Physical SC Chemistry GA RJ668 UT WOS:A1995RJ66800007 ER PT J AU TANNER, JE AF TANNER, JE TI ISOTOPE AND PARAMETER EFFECTS IN A GAS CORE NUCLEAR PROPULSION REACTOR SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB A combined radiation-transport, neutronic, and thermodynamic model of a gas core nuclear propulsion reactor in steady-state operating conditions is presented. Arbitrary radial variation of composition and mass flow is provided for. The configurations asre constrained to a k-effective of unity. Local values of all variables are used at each mesh point, including recently evaluated opacities of uranium-hydrogen mixtures. Thrust and specific impulse are evaluated for several power levels (temperatures), engine sizes, reflector thicknesses, and flow and fuel-propellant mixing profiles, and for four fissile isotopes. Specific impulses and thrusts exceed those of a solid-core reactor at 3000 K even for the worst case of complete mixing of fuel and propellant. RP TANNER, JE (reprint author), WESTINGHOUSE IDAHO NUCL CO,DEPT NUCL ENGN,IDAHO FALLS,ID 83403, USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JUL-AUG PY 1995 VL 32 IS 4 BP 719 EP 722 DI 10.2514/3.26674 PG 4 WC Engineering, Aerospace SC Engineering GA RP016 UT WOS:A1995RP01600020 ER PT J AU KAWASHIMA, N GUBERNATIS, JE AF KAWASHIMA, N GUBERNATIS, JE TI GENERALIZATION OF THE FORTUIN-KASTELEYN TRANSFORMATION AND ITS APPLICATION TO QUANTUM SPIN SIMULATIONS SO JOURNAL OF STATISTICAL PHYSICS LA English DT Article DE QUANTUM MONTE CARLO; CLUSTER ALGORITHM; XXZ MODEL; HEISENBERG MODEL; XY MODEL ID DIMENSIONAL HUBBARD-MODEL; MONTE-CARLO SIMULATION; LATTICE FIELD-THEORY; PERCOLATION; ALGORITHM; DYNAMICS; SYSTEMS AB We generalize the Fortuin-Kasteleyn (FK) cluster representation of the partition function of the Ising model to represent the partition function of quantum spin models with an arbitrary spin magnitude in arbitrary dimensions. This generalized representation enables us to develop a new cluster algorithm for the simulation of quantum spin systems by the worldline Monte Carlo method. Because the Swendsen-Wang algorithm is based on the FK representation, the new cluster algorithm naturally includes it as a special case. As well as the general description of the new representation, we present an illustration of our new algorithm for some special interesting cases: the Ising model, the antiferromagnetic Heisenberg model with S=1, and a general Heisenberg model. The new algorithm is applicable to models with any range of the exchange interaction, any lattice geometry, and any dimensions. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP KAWASHIMA, N (reprint author), LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545, USA. NR 28 TC 26 Z9 26 U1 0 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0022-4715 J9 J STAT PHYS JI J. Stat. Phys. PD JUL PY 1995 VL 80 IS 1-2 BP 169 EP 221 DI 10.1007/BF02178358 PG 53 WC Physics, Mathematical SC Physics GA RL321 UT WOS:A1995RL32100009 ER PT J AU MOSESSON, MW SIEBENLIST, KR HAINFELD, JF WALL, JS AF MOSESSON, MW SIEBENLIST, KR HAINFELD, JF WALL, JS TI THE COVALENT STRUCTURE OF FACTOR XIIIA CROSS-LINKED FIBRINOGEN FIBRILS SO JOURNAL OF STRUCTURAL BIOLOGY LA English DT Article ID CROSS-LINKED FIBRIN; ELECTRON-MICROSCOPY; POLYMERIZATION SITES; FIBRINOPEPTIDE-B; BOVINE FIBRIN; DOMAINS; FRAGMENTS; MOLECULES; IDENTIFICATION; POLYMERS AB When factor XIIIa-mediated crosslinking of fibrin or fibrinogen occurs, reciprocal intermolecular isopeptide bonds form first between paired carboxy terminal gamma chain donor-acceptor sites in outer molecular D domains, resulting in gamma chain dimers. Their location in the fibrin polymer is not certain, but some evidence suggests they are situated at the outermost ends of the D domains of linearly aligned molecules comprising each strand of double-stranded fibrils (''DD-long''). Other experiments indicate that gamma chain bonds are located between D domains in opposing fibril strands (''transverse''). To distinguish between these possible arrangements, we evaluated the ultrastructure of fibrils and fibers found in factor XIIIa-fibrinogen crosslinking mixtures, based on this reasoning: if DD-long bonding occurs, single-stranded fibrils should result, whereas transverse positioning will result in double-stranded fibrils. Fibrils formed in partially crosslinked fibrinogen solutions consisted of true parallel strands, as discerned visually from scanning transmission electron microscopic images and confirmed by mass per unit length fibril measurements. Neighboring fibrinogen D domains in each fibril strand were aligned end-to-end and were in register with a fibrinogen E domain in the opposite strand, creating a half-staggered molecular arrangement with similar to 22.5-nm periodicity corresponding to half the length of fibrinogen. Ribbon-like fibrinogen fibers, like fibrils, displayed 22.5-nm periodicity, as expected from laterally associated double-stranded fibrils with D domains in register. Taken together, these results indicate that carboxy terminal gamma chain bonds are positioned transversely between strands and are represented by thin filamentous structures bridging the D domains of opposing fibril strands-it follows that the same gamma chain crosslink arrangement occurs in fibrin. (C) 1995 Academic Press, Inc. C1 BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973. RP MOSESSON, MW (reprint author), UNIV WISCONSIN,SCH MED,SINAI SAMARITAN MED CTR,MILWAUKEE CLIN CAMPUS,MILWAUKEE,WI 53233, USA. FU NHLBI NIH HHS [HL-47000]; PHS HHS [R01-11777] NR 69 TC 57 Z9 58 U1 1 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 1047-8477 J9 J STRUCT BIOL JI J. Struct. Biol. PD JUL-AUG PY 1995 VL 115 IS 1 BP 88 EP 101 DI 10.1006/jsbi.1995.1033 PG 14 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA RY342 UT WOS:A1995RY34200010 PM 7577232 ER PT J AU BROSHA, EL GARZON, FH RAISTRICK, ID AF BROSHA, EL GARZON, FH RAISTRICK, ID TI LOW-TEMPERATURE PHASE-EQUILIBRIA IN THE Y-BA-CU-O SYSTEM SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID THERMODYNAMIC STABILITY; OXIDE SUPERCONDUCTORS; Y2O3-BAO-CUO SYSTEM; CRYSTAL-CHEMISTRY; COPPER-OXIDE; Y2BACUO5; THERMOCHEMISTRY; COMPATIBILITIES; Y2CU2O5; 950-DEGREES-C AB Ultrasonically prepared freeze-dried nitrate precursors and high-precision solution calorimetry were used to investigate the low-temperature thermodynamic stabilities of compounds in the Y-Cu-O, Ba-Cu-O, Y-Ba-O, and Y-Ba-Cu-O pseudobinary and pseudoternary systems at 1 atm of oxygen, Y2Cu2O5, Y2BaCuO5, and BaCuO2 were found to be metastable below 682 degrees, 728 degrees, and 710 degrees +/- 5 degrees C, respectively, The only stable phases in the Y-Ba-Cu-O system at 298 K and 1 atm of oxygen are Ba2Cu3O6, CuO, BaO2, and Y2O3. By compiling the calorimetric and phase equilibria data, a series of Y-Ba-Cu-O isothermal phase diagrams were constructed between 25 degrees and 900 degrees C at 1 atm of oxygen. C1 UNIV PENN,DEPT MAT SCI & ENGN,PHILADELPHIA,PA 19104. RP BROSHA, EL (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 65 TC 21 Z9 21 U1 0 U2 3 PU AMER CERAMIC SOC 735 CERAMIC PLACE PI WESTERVILLE PA PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD JUL PY 1995 VL 78 IS 7 BP 1745 EP 1752 DI 10.1111/j.1151-2916.1995.tb08884.x PG 8 WC Materials Science, Ceramics SC Materials Science GA RJ680 UT WOS:A1995RJ68000005 ER PT J AU LEE, WY BAE, YW STINTON, DP AF LEE, WY BAE, YW STINTON, DP TI NA2SO4-INDUCED CORROSION OF SI3N4 COATED WITH CHEMICALLY VAPOR-DEPOSITED TA2O5 SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article AB Hot isostatically pressed Si3N4 was coated with chemically vapor-deposited Ta2O5, and subjected to oxidative and corrosive environments to determine the feasibility of using a Ta2O5 coating for protecting Si3N4 from hot corrosion. The coated structure was relatively stable at 1000 degrees C in pure O-2. However, the Ta2O5-Si3N4 system became unstable in an environment containing Na2SO4 and O-2 at 1000 degrees C because (1) Ta2O5 and Na2SO3 reacted rapidly to form NaTaO3 and (2) subsequently NaTaO3 interacted destructively with the underlying Si3N4 substrate to form a molten phase. RP LEE, WY (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 15 TC 11 Z9 11 U1 0 U2 4 PU AMER CERAMIC SOC 735 CERAMIC PLACE PI WESTERVILLE PA PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD JUL PY 1995 VL 78 IS 7 BP 1927 EP 1930 DI 10.1111/j.1151-2916.1995.tb08911.x PG 4 WC Materials Science, Ceramics SC Materials Science GA RJ680 UT WOS:A1995RJ68000032 ER PT J AU SONG, I ANTONIO, MR PAYER, JH AF SONG, I ANTONIO, MR PAYER, JH TI IRON K-EDGE XANES STUDY OF IRON AND IRON-OXIDES FOR THE CATHODIC DISBONDING OF FUSION BONDED EPOXY IN ALKALINE AQUEOUS-SOLUTION SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID RAY PHOTOELECTRON-SPECTROSCOPY; TO-METAL ADHESION; COATED MILD-STEEL; ABSORPTION-SPECTROSCOPY; ORGANIC COATINGS; OXIDATION-STATE; PRE-EDGE; SPECTRA; COORDINATION; CHEMISTRY AB Iron K-edge x-ray absorption near-edge structure (XANES) of laboratory-scale model oxide systems was studied to provide insights about the mechanism of cathodic disbonding of fusion bonded epoxy (FBE) from underground steel pipelines. Two model systems were studied: (i) thin film iron (500 Angstrom thick) thermally oxidized at 240 degrees C; and (ii) thin film iron coated with FBE and cathodically disbonded. The thin film iron exhibited a trend of decreasing metallic character with increasing thermal oxidation times. After 122 h of oxidation, the oxidic character became predominant. The oxide appeared to be a mixture of Fe2O3 and Fe3O4. The XANES data for the region under the cathodically disbonded FBE coating exhibited more metallic character than the region that maintained the bond integrity. Under the cathodic disbonding conditions of the present study (-1.5 V-SCE in 1M KOH aqueous solution), the XANES results, although preliminary, support the oxide reduction and/or oxide dissolution mechanisms of disbonding. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP SONG, I (reprint author), CASE WESTERN RESERVE UNIV,CASE SCH ENGN,DEPT MAT SCI & ENGN,CLEVELAND,OH 44106, USA. NR 47 TC 6 Z9 8 U1 0 U2 2 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD JUL PY 1995 VL 142 IS 7 BP 2219 EP 2224 DI 10.1149/1.2044278 PG 6 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RJ355 UT WOS:A1995RJ35500026 ER PT J AU MUKERJEE, S MCBREEN, J REILLY, JJ JOHNSON, JR ADZIC, G PETROV, K KUMAR, MPS ZHANG, W SRINIVASAN, S AF MUKERJEE, S MCBREEN, J REILLY, JJ JOHNSON, JR ADZIC, G PETROV, K KUMAR, MPS ZHANG, W SRINIVASAN, S TI IN-SITU X-RAY-ABSORPTION SPECTROSCOPY STUDIES OF METAL HYDRIDE ELECTRODES SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID AMORPHOUS LANI5.0 FILMS; FINE-STRUCTURE; LOCAL-STRUCTURE; VALENCE; EXAFS AB In situ x-ray absorption spectroscopy (XAS) studies were done on three metal hydride electrodes, LaNi5, LaNi4.8Sn0.2, La0.8Ce0.2Ni4.8Sn0.2, in 6M KOH. Ex situ measurements were also made on dry uncycled electrodes and on material from an La0.8Ce0.2Ni4.8Sn0.2, electrode that had been cycled 25 times. Comparison of the in situ XAS at the Ni K and at the La L(3) edge of charged and discharged electrodes indicates large changes in the electronic and structural characteristics on introduction of hydrogen. Results at the Ce L(3) edge in La0.8Ce0.2Ni4.8Sn0.2 show a transition from a mixed valent or to a gamma-like Ce state as the lattice expands during charge. Ex situ x-ray absorption near-edge structures (XANES) at the Ni K edge indicate that the additions of either Ce or Sn fill empty Ni 3d states. The Ni K edge extended x-ray absorption fine structures (EXAFS) for all three alloys in the dry uncharged state were similar, indicating that minor substitutions for either the A or B component do not substantially change the structure. The Sn substitution causes an increase both in a and c axis as evidenced from increase in the Ni-Ni and the Ni-La distances. Partial substitution of La by Ce causes a slight contraction in the Ni-La distance. The Ni XANES and EXAFS indicate that about 6% of the Ni in the La0.8Ce0.2N4.8Sn0.2 corroded after 25 cycles. Ce XANES on the cycled electrode indicates some corrosion of Ce and the formation of Ce (III) state. The results indicate that XAS is a very useful technique for the study of alloy hydrides, particularly the role of electronic structure, the environment around minor constituents, and the corrosion of individual components. C1 TEXAS A&M UNIV,CTR ELECTROCHEM SYST & HYDROGEN RES,COLLEGE STN,TX 77843. RP MUKERJEE, S (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973, USA. NR 35 TC 40 Z9 47 U1 0 U2 12 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD JUL PY 1995 VL 142 IS 7 BP 2278 EP 2286 DI 10.1149/1.2044287 PG 9 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RJ355 UT WOS:A1995RJ35500035 ER PT J AU FRANKEL, GS JAHNES, CV BRUSIC, V DAVENPORT, AJ AF FRANKEL, GS JAHNES, CV BRUSIC, V DAVENPORT, AJ TI REPASSIVATION TRANSIENTS MEASURED WITH THE BREAKING-ELECTRODE TECHNIQUE ON ALUMINUM THIN-FILM SAMPLES SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID CORROSION; SURFACES; GROWTH AB The breaking-electrode technique was used to study repassivation transients of small, fresh metal areas of Al exposed to a conductive electrolyte at a range of potentials. The peak current density measured within the first few microseconds after breaking was found to be ohmically limited, with an ohmic resistance that is substantially higher than that measured minutes after breaking. The current decay during the first 3 s was recorded and found to be exponential in nature. By plotting the data as log i vs. (it)(-1/2), it is concluded that oxide growth was better represented by the direct logarithmic law than by high-field kinetics. Cathodic current transients having a complex shape were observed at low potentials. It is suggested that oxide growth at potentials slightly above the reversible potential for oxide formation retards the water reduction reaction. The advantages and limitations of the breaking-electrode technique are discussed. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP FRANKEL, GS (reprint author), IBM CORP,DIV RES,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598, USA. RI Davenport, Alison/J-6089-2013; Street, Steven/A-5398-2015 OI Davenport, Alison/0000-0003-0853-515X; Street, Steven/0000-0002-8999-3701 NR 26 TC 27 Z9 27 U1 0 U2 6 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD JUL PY 1995 VL 142 IS 7 BP 2290 EP 2295 DI 10.1149/1.2044289 PG 6 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RJ355 UT WOS:A1995RJ35500037 ER PT J AU POINDEXTER, EH WARREN, WL AF POINDEXTER, EH WARREN, WL TI PARAMAGNETIC POINT-DEFECTS IN AMORPHOUS THIN-FILMS OF SIO2 AND SI3N4 - UPDATES AND ADDITIONS SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID DANGLING-BOND CENTERS; RECHARGEABLE E' CENTERS; SILICON-NITRIDE FILMS; OXYGEN-VACANCY; THERMAL SIO2; BURIED SIO2; ELECTRON; DIOXIDE; HYDROGEN; RADIATION AB Recent research on point defects in thin films of silicon dioxide, silicon nitride, and silicon oxynitride on Si is presented and reviewed. In SiO2, it now clear that no one type of E' center is the sole source of radiation-induced positive charge; hydrogenous moieties or other types of E' are proposed. Molecular orbital theory and easy passivation of E' by H-2 suggest that released H might depassivate interface P-b sites. A charged E(delta)' center has been seen in Cl-free SIMOX (separation by implantation of oxygen) and thermal oxide films, and it is reassigned to an electron delocalized over four O-3=Si units around a fifth Si. In Si3N4, a new model for the amphoteric charging of . Si=N-3 moieties is based on local shifts in defect energy with respect to the Fermi level, arising from nonuniform composition; it does not assume negative U electron correlation. A new defect NN20 has been identified, with dangling orbital on a two-coordinated N atom bonded to another N. Silicon oxynitride defects are briefly presented. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP POINDEXTER, EH (reprint author), USA,RES LAB,FT MONMOUTH,NJ 07703, USA. NR 55 TC 49 Z9 49 U1 2 U2 8 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD JUL PY 1995 VL 142 IS 7 BP 2508 EP 2516 DI 10.1149/1.2044326 PG 9 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RJ355 UT WOS:A1995RJ35500073 ER PT J AU MILNER, TE GOODMAN, DM TANENBAUM, BS NELSON, JS AF MILNER, TE GOODMAN, DM TANENBAUM, BS NELSON, JS TI DEPTH PROFILING OF LASER-HEATED CHROMOPHORES IN BIOLOGICAL TISSUES BY PULSED PHOTOTHERMAL RADIOMETRY SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article DE CONSTRAINED CONJUGATE GRADIENTS; ILL-POSED PROBLEM; INFRARED RADIOMETRY; LASER SURGERY; NONNEGATIVE; SINGULAR-VALUE DECOMPOSITION ID TEMPERATURE; WATER; COMPONENTS; REGRESSION; TOOLS AB A solution method is proposed to the inverse problem of determining the unknown initial temperature distribution in a laser-exposed test material from measurements provided by infrared radiometry. A Fredholm integral equation of the first kind is derived that relates the temporal evolution of the infrared signal amplitude to the unknown initial temperature distribution in the exposed test material. The singular-value decomposition is used to demonstrate the severely ill-posed nature of the derived inverse problem. Three inversion methods are used to estimate solutions for the initial temperature distribution. A nonnegatively constrained conjugate-gradient algorithm using early termination is found superior to unconstrained inversion methods and is applied to image the depth of laser-heated chromophores in human skin. C1 UNIV CALIF IRVINE,BECKMAN LASER INST & MED CLIN,DEPT SURG,IRVINE,CA 92715. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. HARVEY MUDD COLL,CLAREMONT,CA 91711. RP MILNER, TE (reprint author), UNIV CALIF IRVINE,BECKMAN LASER INST & MED CLIN,DEPT DERMATOL,IRVINE,CA 92715, USA. FU NCRR NIH HHS [R03-RR06988]; NIAMS NIH HHS [R01-AR42437-01A1, R29-AR41638-0141] NR 31 TC 85 Z9 86 U1 0 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD JUL PY 1995 VL 12 IS 7 BP 1479 EP 1488 DI 10.1364/JOSAA.12.001479 PG 10 WC Optics SC Optics GA RF330 UT WOS:A1995RF33000008 PM 7608789 ER PT J AU KARLSSON, A STEWART, R AF KARLSSON, A STEWART, R TI WAVE PROPAGATORS FOR TRANSIENT WAVES IN PERIODIC MEDIA SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID GREEN-FUNCTION APPROACH; TIME-DOMAIN; INVERSE SCATTERING; EQUATION; OPERATORS AB One-dimensional propagation of transient electromagnetic waves in periodic media is studied. The media are periodic in the direction of propagation and can be of finite or infinite length. Wave propagators that map a transient field from one point in the medium to another are introduced. A number of useful relations for the propagators are presented. Some of these relations are used in the determination of explicit expressions for the short time behavior of a transient wave as it propagates in a periodic medium. The theory is exemplified by several numerical examples. C1 AMES LAB,AMES,IA 50011. RP KARLSSON, A (reprint author), LUND INST TECHNOL,DEPT ELECTROMAGNET THEORY,POB 118,S-22100 LUND,SWEDEN. RI Karlsson, Anders/J-3384-2012 NR 13 TC 14 Z9 14 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD JUL PY 1995 VL 12 IS 7 BP 1513 EP 1521 DI 10.1364/JOSAA.12.001513 PG 9 WC Optics SC Optics GA RF330 UT WOS:A1995RF33000011 ER PT J AU CONWAY, JG WORDEN, EF BLAISE, J AF CONWAY, JG WORDEN, EF BLAISE, J TI ENERGY-LEVELS OF NEUTRAL CALIFORNIUM (CF-249-I) AND SINGLY IONIZED CALIFORNIUM (CF-249-II) SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article AB The californium spectrum emitted by electrodeless lamps has been observed from 2320 to 28 600 Angstrom (43 070 to 3495 cm(-1)) and the wavelengths of more than 13,000 lines measured. Energy-level analyses have yielded 136 even and 265 odd levels of Of I and 40 even plus 172 odd levels of Cf II. The hyperfine width and the Lande g value are given for many levels. Twelve electron configurations have been identified for Cf I and four for Cf II. Observations of the hyperfine structures of Cf-249 and Cf-251 have confirmed the nuclear spins of 9/2 and 1/2 derived from nuclear decay systematics. The sign of the nuclear dipole moment has been determined to be negative for both isotopes. The lowest levels of some configurations of the elements Th through Es have been plotted versus the number of f electrons for the neutral and the singly ionized species, A similar plot for three configurations of the neutral lanthanides and actinides gives a comparison of the electronic structures in these two series. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. CNRS,AIME COTTON LAB,F-91405 ORSAY,FRANCE. NR 32 TC 7 Z9 7 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD JUL PY 1995 VL 12 IS 7 BP 1186 EP 1202 DI 10.1364/JOSAB.12.001186 PG 17 WC Optics SC Optics GA RH119 UT WOS:A1995RH11900002 ER PT J AU KHAKHALIN, SY DYAKIN, VM FAENOV, AY FIEDOROWICZ, H BARTNIK, A PARYS, P OSTERHELD, AL NILSEN, J AF KHAKHALIN, SY DYAKIN, VM FAENOV, AY FIEDOROWICZ, H BARTNIK, A PARYS, P OSTERHELD, AL NILSEN, J TI DIELECTRONIC 3L4L' NA-LIKE SATELLITES TO NE-LIKE KRYPTON RESONANCE LINES SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID X-RAY-SPECTRA; IONS; TRANSITIONS; SEQUENCES AB Transitions from the doubly excited 2s(2)2p(5)3l4l' and 2s2p(6)3l4l' levels of Na-like Kr25+ were observed in spectra from plasmas produced in laser-irradiated gas-puff targets. These transitions produce satellites to n = 3-2 and n = 4-2 Ne-like Kr26+ resonance lines. High-resolution x-ray spectra were measured with a relative uncertainty of +/-0.001 Angstrom by means of a spherical crystal spectrograph. A simple kinetics model was successfully used to model the experimental spectra, to assist the Line identification, and to demonstrate the potential of these lines for diagnosing the plasma conditions. In addition, contributions of these lines to x-ray spectra should be taken into account in the analysis of n = 4-2 Ne-Like linewidth diagnostics proposed for electron density measurements in compressed inertial confinement fusion plasmas. C1 INST OPTOELECTR,PL-01498 WARSAW 49,POLAND. INST PLASMA PHYS & LASER MICROFUS,PL-00908 WARSAW,POLAND. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551. RP KHAKHALIN, SY (reprint author), NATL SCI RES INST PHYS TECH & RADIOTECH MEASUREME,CTR MULTICHARGED IONS SPECTRAL DATA,MOSCOW 141570,RUSSIA. NR 21 TC 15 Z9 16 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD JUL PY 1995 VL 12 IS 7 BP 1203 EP 1210 DI 10.1364/JOSAB.12.001203 PG 8 WC Optics SC Optics GA RH119 UT WOS:A1995RH11900003 ER PT J AU OHAMA, T YASUOKA, H MANDRUS, D FISK, Z SMITH, JL AF OHAMA, T YASUOKA, H MANDRUS, D FISK, Z SMITH, JL TI ANOMALOUS TRANSFERRED HYPERFINE COUPLING IN CECU2SI2 SO JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN LA English DT Article DE CECU2SI2; HEAVY FERMION; CRYSTAL FIELD EFFECT; NMR; KNIGHT SHIFT; MAGNETIC SUSCEPTIBILITY ID FERMION SUPERCONDUCTOR CECU2SI2; MAGNETIC-PROPERTIES; CE MONOPNICTIDES; PARAMAGNETIC STATE; SINGLE-CRYSTALS; KNIGHT-SHIFT; SUSCEPTIBILITY AB The magnetic susceptibility and the Cu and Si Knight shifts have been measured in CeCu2Si2. The transferred hyperfine couplings at both the sites are strongly temperature-dependent and noticeably anisotropic at low temperatures. The negative hyperfine couplings observed for the magnetic field along the c-axis al the low temperatures are anomalous as in Ce intermetallic compounds. It is pointed out that the transferred hyperfine coupling due to the hybridization of the f electrons with the ligand s electrons can be anisotropic and also can reverse its sign at the lower temperatures than the crystal-field splitting energy. It is concluded that this hybridization is the dominant mechanism of the transferred hyperfine coupling and responsible for the anomaly. C1 LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. RP OHAMA, T (reprint author), UNIV TOKYO, INST SOLID STATE PHYS, MINATO KU, TOKYO 106, JAPAN. RI Mandrus, David/H-3090-2014 NR 30 TC 40 Z9 40 U1 1 U2 2 PU PHYSICAL SOC JAPAN PI TOKYO PA YUSHIMA URBAN BUILDING 5F, 2-31-22 YUSHIMA, BUNKYO-KU, TOKYO, 113-0034, JAPAN SN 0031-9015 J9 J PHYS SOC JPN JI J. Phys. Soc. Jpn. PD JUL PY 1995 VL 64 IS 7 BP 2628 EP 2635 DI 10.1143/JPSJ.64.2628 PG 8 WC Physics, Multidisciplinary SC Physics GA RL629 UT WOS:A1995RL62900058 ER PT J AU KUNTZ, DW WILKEN, AC PAYNE, JL AF KUNTZ, DW WILKEN, AC PAYNE, JL TI ANALYSIS OF THE PHOTODIODE BOUNDARY-LAYER-TRANSITION INDICATOR SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB The photodiode transition indicator is a device that has been successfully used to determine the onset of boundary-layer transition on numerous hypersonic night vehicles, The exact source of the electromagnetic radiation detected by the photodiode at transition was not understood, During some flight tests early saturation of the device occurred, and the device failed to detect transition, Analyses have been performed to determine the source of the radiation producing the photodiode signal, Four proposed radiation sources were investigated: 1) radiation from the quartz window material, 2) radiation from the heat shield material bordering the quartz window, 3) radiative emissions from the gases within the boundary and shock layers, and 3) radiation from ablation products, The results of these analyses indicate that the most likely source of the radiation is blackbody emission from the heat shield material bordering the quartz window of the device, Good agreement between flight data and calculations based on this radiation source has been obtained, Analyses also indicate that the most probable source of the radiation causing early saturation is blackbody radiation from carbon particles that break away from the nosetip during the ablation process. C1 SANDIA NATL LABS,DEPT HYPERSON DEV,TECH STAFF,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,DEPT AEROSCI & FLUID DYNAM,TECH STAFF,ALBUQUERQUE,NM 87185. RP KUNTZ, DW (reprint author), SANDIA NATL LABS,DEPT THERMOPHYS,ALBUQUERQUE,NM 87185, USA. NR 21 TC 2 Z9 2 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JUL-SEP PY 1995 VL 9 IS 3 BP 499 EP 507 DI 10.2514/3.693 PG 9 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA RK192 UT WOS:A1995RK19200017 ER PT J AU GIBSON, JK AF GIBSON, JK TI EXCIMER-LASER ABLATION MASS-SPECTROMETRY OF INORGANIC SOLIDS - CHEMICAL, MATRIX, AND SAMPLING EFFECTS ON POLYATOMIC ION YIELDS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A LA English DT Article ID REFRACTORY MATERIALS; BOROSILICATE GLASS; ACTINIDE VALENCES; CLUSTER IONS; VAPORIZATION; GRAPHITE; EXCITATION; MOLECULES; EJECTION; HALIDES AB Positive ions formed directly by excimer laser ablation in vacuum of several lanthanide (Ln) and transition metal solid materials-including Ln(2)O(3), Ln(2)S(3), LnF(3), Ta2O5, ZrO2, TiO, and TiO2-were identified by time-of-flight mass spectrometry. Variations in ion yields were investigated as a function of the composition of the precursor material, laser irradiance, and ion sampling delay after ablation. The compositions of the observed polyatomic ions reflected the distinctive chemistries of the metal constituents, but the ion yield distributions were not generally indicative of the particular chemical/valence constitution of the target material. For example, the yield of CeO+ relative to Ce+ was substantially greater from the trivalent cerium oxide, Ce-2(WO4)(3)(s), than from tetravalent CeO2(s). Observed ion distributions apparently reflected the chemical composition of the ablation plume and the degree of gas-phase recombination therein. The observed abundances of polyatomic ions were found to correlate well with their estimated bond strengths. Further obscuring the chemical composition of the progenitor, minor changes in ablation, and sampling parameters-especially irradiance and sampling delay-were often manifested as significant variations in relative ion intensities. (C) 1995 American Vacuum Society. RP OAK RIDGE NATL LAB, DIV CHEM & ANALYT SCI, OAK RIDGE, TN 37831 USA. NR 48 TC 11 Z9 11 U1 0 U2 2 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 0734-2101 EI 1520-8559 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A PD JUL-AUG PY 1995 VL 13 IS 4 BP 1945 EP 1958 DI 10.1116/1.579635 PG 14 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RK461 UT WOS:A1995RK46100021 ER PT J AU FRANKE, JE ZHANG, LZ NIEMCZYK, TM HAALAND, DM RADIGAN, KJ AF FRANKE, JE ZHANG, LZ NIEMCZYK, TM HAALAND, DM RADIGAN, KJ TI QUANTITATIVE-ANALYSIS OF BOROPHOSPHOSILICATE GLASS-FILMS ON SILICON USING INFRARED EXTERNAL REFLECTION-ABSORPTION SPECTROSCOPY SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article AB Borophosphosilicate glass (BPSG) dielectric thin films deposited on both bare and oxide-coated undoped silicon wafers have been analyzed using infrared external reflection-absorption spectroscopy (IRRAS). The partial least-squares (PLS1) algorithm was used to simultaneously determine boron content, phosphorous content, and film thickness, with standard errors of prediction of 0.08 wt %, 0.11 wt %, and 24 Angstrom, respectively, in the BPSG films on oxide-coated wafers (similar results were obtained with the bare wafer BPSG sample set). These results were statistically equivalent to the precisions of the reference methods used to determine each BPSG property, indicating that the precisions of the PLS1 models were limited by the precisions of the reference methods. IRRAS reproducibility and repeatability results verified that the method can be more precise than the reference methods. The reproducibility results were derived from the standard deviation of ten PLS1 predictions of ten IRRAS spectra that were obtained from a single BPSG sample that was moved in and out of the sample chamber between each spectral measurement. The repeatability results were obtained similarly, but the sample was not moved between acquiring the ten spectra. The precision of the IRRAS method from the repeatability data was found to be +/-0.006 wt % B, +/-0.011 wt % P, and +/-4 Angstrom film thickness. The reproducibility results were generally less precise than the repeatability results. Studies done as a function of spectral resolution and signal averaging showed that very rapid IRRAS measurements could be made (up to 2 Hz) with high PLS1 prediction precision for the three calibrated BPSG properties. The results show that the IRRAS technique has great potential for rapid, at-line quality control monitoring of BPSG thin films on undoped silicon wafers. (C) 1995 American Vacuum Society. C1 UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NATL SEMICOND CORP,SANTA CLARA,CA 95052. NR 11 TC 13 Z9 13 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD JUL-AUG PY 1995 VL 13 IS 4 BP 1959 EP 1966 DI 10.1116/1.579636 PG 8 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RK461 UT WOS:A1995RK46100022 ER PT J AU NELSON, AJ FRIGO, SP ROSENBERG, R AF NELSON, AJ FRIGO, SP ROSENBERG, R TI SURFACE TYPE CONVERSION OF CUINSE2 WITH H2S PLASMA EXPOSURE - A PHOTOEMISSION INVESTIGATION SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID ELECTRONIC-STRUCTURE; FILMS; PASSIVATION; INP AB Surface type conversion of CuInSe2 by H2S plasma exposure was studied by synchrotron radiation soft jr-ray photoemission spectroscopy. The low power H2S plasma was generated with a commercial electron cyclotron resonance plasma source using pure H2S with the plasma exposure being performed at 400 degrees C. In Situ photoemission measurements were acquired after each plasma exposure in order to observe changes in the valence band electronic structure as well as changes in the In 4d and Se 3d core lines. The results were correlated in order to relate changes in surface chemistry to the electronic structure. These measurements indicate that the H2S plasma exposure type converts the n-type CuInSe2 surface to a p-type surface at this elevated temperature and that the magnitude of the band bending is 0.5 eV, resulting in a homojunction interface. (C) 1995 American Vacuum Society. C1 UNIV WISCONSIN,CTR SYNCHROTRON RADIAT,STOUGHTON,WI 53589. ARGONNE NATL LAB,ADV PHOTON SOURCE,ARGONNE,IL 60439. RP NELSON, AJ (reprint author), NATL RENEWABLE ENERGY LAB,1617 COLE BLVD,GOLDEN,CO 80401, USA. RI Rosenberg, Richard/K-3442-2012 NR 16 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD JUL-AUG PY 1995 VL 13 IS 4 BP 1990 EP 1993 DI 10.1116/1.579641 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RK461 UT WOS:A1995RK46100027 ER PT J AU RUCKMAN, MW STRONGIN, M LANFORD, WA TURNER, WC AF RUCKMAN, MW STRONGIN, M LANFORD, WA TURNER, WC TI N-15 HYDROGEN DEPTH PROFILING MEASUREMENTS OF CANDIDATE SUPERCONDUCTING SUPERCOLLIDER BEAM PIPE MATERIALS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article ID COPPER AB Photodesorption of gas, particularly H-2, by synchrotron radiation in the proposed next generation of superconducting proton colliders is a critical issue confronting the design of the vacuum system. As an initial step in understanding the source of this hydrogen, we report measurements of the surface and bulk concentrations of hydrogen in candidate beam tube materials and compare the surface concentration to the amount of H-2 desorbed in photodesorption experiments. Hydrogen profiling measurements using the 6.4 MeV H(N-15,alpha gamma)C-12 resonant nuclear reaction were performed on representative vacuum system materials including stainless steel, stainless steel electroplated with copper, and high purity bulk copper. All of the Cu samples examined had a hydrogen-rich surface layer <100 Angstrom thick containing 2-5X10(16) H atoms/cm(2) and a bulk concentration of approximately 1% atomic hydrogen. (C) 1995 American Vacuum Society. C1 SUNY ALBANY,DEPT PHYS,ALBANY,NY 12222. SUPERCONDUCTING SUPER COLLIDER LAB,DALLAS,TX 75237. RP RUCKMAN, MW (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 17 TC 10 Z9 10 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD JUL-AUG PY 1995 VL 13 IS 4 BP 1994 EP 1998 DI 10.1116/1.579642 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RK461 UT WOS:A1995RK46100028 ER PT J AU LILIENTALWEBER, Z SOHN, H NEWMAN, N WASHBURN, J AF LILIENTALWEBER, Z SOHN, H NEWMAN, N WASHBURN, J TI ELECTRON-MICROSCOPY CHARACTERIZATION OF GAN FILMS GROWN BY MOLECULAR-BEAM EPITAXY ON SAPPHIRE AND SIC SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID THIN-FILMS; NITRIDE AB Transmission electron microscopy was used for the characterization of GaN epitaxial layers grown by molecular-beam epitaxy on two different substrates: sapphire (Al2O3) and 6H-SiC. GaN layers grown on both substrates crystallize with the wurtzite structure. Despite the very different lattice mismatch associated with their two substrates, similar types of defects were formed in the GaN layer; only their density differed. in addition to small-angle subgrain boundaries two other types of defects were seen in cross-sectioned samples: defects parallel to the growth surface and microtwins with a width of about 8-10 nm perpendicular to the growth surface. The parallel defects were identified as stacking faults leading to a local fcc atom arrangement in the layer and are believed to be growth defects. The density of these faults decreased with layer thickness. However, the density of the vertical microtwins remained constant through the layer. Slight local lattice twists between the microtwins and surrounding areas or differences of stoichiometry are suggested as an explanation for the observed contrast of the high-resolution images. (C) 1995 American Vacuum Society. C1 UNIV CALIF BERKELEY,DEPT MAT SCI,BERKELEY,CA 94720. RP LILIENTALWEBER, Z (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,62-203,BERKELEY,CA 94720, USA. RI Newman, Nathan/E-1466-2011; Liliental-Weber, Zuzanna/H-8006-2012; Kim, youngjae/I-7780-2012 OI Newman, Nathan/0000-0003-2819-9616; NR 12 TC 56 Z9 56 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1578 EP 1581 DI 10.1116/1.588190 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200030 ER PT J AU VAN DE WALLE, CG YANG, LH AF VAN DE WALLE, CG YANG, LH TI BAND DISCONTINUITIES AT HETEROJUNCTIONS BETWEEN CRYSTALLINE AND AMORPHOUS-SILICON SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID INTERNAL PHOTOEMISSION; DEFORMATION POTENTIALS; SI; COMPUTER; OFFSETS; DIAGRAM AB We present a theoretical investigation of the band lineups between crystalline and amorphous silicon, based on the first-principles pseudopotential method and the model-solid theory. We find that the offsets are very sensitive to the hydrogen content of the material; the valence-band offset for a junction with unhydrogenated a-Si is -0.25 eV, while for hydrogenated a-Si with a hydrogen content of 11% the offset becomes 0.20 eV. Consequences for the interpretation of experimental data are discussed. (C) 1995 American Vacuum Society. C1 LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94551 USA. RP XEROX CORP, PALO ALTO RES CTR, 3333 COYOTE HILL RD, PALO ALTO, CA 94304 USA. RI Van de Walle, Chris/A-6623-2012 OI Van de Walle, Chris/0000-0002-4212-5990 NR 23 TC 29 Z9 29 U1 0 U2 2 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1635 EP 1638 DI 10.1116/1.587870 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200041 ER PT J AU MCGIBBON, AJ CHISHOLM, MF PENNYCOOK, SJ AF MCGIBBON, AJ CHISHOLM, MF PENNYCOOK, SJ TI DIRECT SUBLATTICE IMAGING OF SEMICONDUCTOR-MATERIALS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID CDTE/GAAS(001) INTERFACE; DISLOCATION AB By employing the technique of Z-contrast imaging in a 300 kV scanning transmission electron microscope, we show that it is possible to obtain directly interpretable, atomic resolution images of interface structures in semiconductor materials. With particular emphasis on the study of the CdTe/GaAs(001) system, we demonstrate that such an approach enables the direct observation of the sublattice in compound semiconductors and, as a direct consequence of this, facilitates the observation of atomic arrangements (in some cases unexpected) at dislocation cores on the column-by-column level. In addition, we demonstrate that the technique can also be applied to the study of grain boundary structures, by showing examples taken from boundaries in Si and SrTiO3. (C) 1995 American Vacuum Society. C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. NR 13 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 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1751 EP 1754 DI 10.1116/1.587807 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200059 ER PT J AU LUO, JS OLSON, JM WU, MC AF LUO, JS OLSON, JM WU, MC TI ANNEALING-INDUCED NEAR-SURFACE ORDERING IN DISORDERED GA0.5IN0.5P SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID VAPOR-PHASE EPITAXY; LONG-RANGE ORDER; NATURAL SUPERLATTICES; ALLOY SEMICONDUCTORS; FORMATION MECHANISM; BAND-GAP; GROWTH; LAYERS; GAINP AB Most samples of Ga0.5In0.5P grown by metalorganic chemical vapor deposition (MOCVD) on (001)-like surfaces are partially ordered and exhibit distinctive reflectance difference spectral (RDS) features associated with the anisotropic properties of the ordered bulk structure. It is known that the ordering is not a ground-state property of the bulk but is surface-induced during growth. On the other hand, Ga0.5In0.5P grown by liquid-phase epitaxy (LPE) is completely disordered, and it has been shown that its RD spectrum is essentially featureless. In this article, we present a study of the effects of annealing (in a PH3/H-2 atmosphere) on LPE-grown Ga0.5In0.5P using ex situ and in situ RDS. The annealing temperatures and times used in this study (650 degrees C and tens of minutes) have virtually no effect on the bulk optical or structural properties of MOCVD-grown Ga0.5In0.5P. For LPE-grown Ga0.5In0.5P, we find that annealing induces bulk-like RDS features at both E(0) and E(1) with line shapes similar to those observed for MOCVD-grown ordered Ga0.5In0.5P. These bulk-like spectral features are, however, due to near-surface reconstruction of Ga and In because they are effectively quenched by exposure to air. Also, the E(0) feature becomes sharper and both the E(0) and the E(1) features red-shift as the annealing process is prolonged. This indicates that this reconstruction is kinetically limited, presumably by the slow interdiffusion of Ga and In necessary to achieve the ordered bulk-like structure. (C) 1995 American Vacuum Society. C1 NATL TSING HUA UNIV, HSINCHU 30043, TAIWAN. RP LUO, JS (reprint author), NATL RENEWABLE ENERGY LAB, GOLDEN, CO 80401 USA. NR 28 TC 2 Z9 2 U1 0 U2 0 PU A V S AMER INST PHYSICS PI MELVILLE PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1755 EP 1759 DI 10.1116/1.587808 PG 5 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200060 ER PT J AU CHANG, T FU, LP BACALZO, FT GILLILAND, GD WOLFORD, DJ BAJAJ, KK ANTONELLI, A CHEN, R KLEM, J HAFICH, M AF CHANG, T FU, LP BACALZO, FT GILLILAND, GD WOLFORD, DJ BAJAJ, KK ANTONELLI, A CHEN, R KLEM, J HAFICH, M TI OPTICAL STUDIES OF HETEROINTERFACIAL GROWTH INTERRUPTS IN TYPE-II GAAS/ALAS SUPERLATTICES BY TIME-RESOLVED PHOTOLUMINESCENCE IMAGING SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID MINORITY-CARRIER TRANSPORT; QUANTUM-WELL STRUCTURES; MOLECULAR-BEAM EPITAXY; EXCITON TRANSPORT; INTERFACE-ROUGHNESS; ALAS SUPERLATTICES; HETEROSTRUCTURES; FIELD AB We have quantitatively characterized the heterointerfaces in type-II GaAs/AlAs short-period structures with various types of growth interrupts. The quality of the heterointerfaces is governed by two factors: the magnitude of the potential fluctuations or interface roughness and the density of nonradiative defect centers incorporated at the heterointerfaces during growth. We have quantified these aspects of the heterointerfaces through photoluminescence (PL), PL time-decay, and time-resolved PL-imaging measurements. We find that growth interrupts at the normal heterointerfaces significantly improves the quality of the interfaces over growth with no interrupts in regard to the interface roughness. Further, the transport of the excitons along the heterointerfaces may be explained by interface roughness induced scattering. We also find that growth interrupts at only the normal interfaces substantially reduces the nonradiative trap densities at the heterointerfaces. (C) 1995 American Vacuum Society. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,MICROELECTR RES CTR,AMES,IA 50011. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP CHANG, T (reprint author), EMORY UNIV,DEPT PHYS,ATLANTA,GA 30332, USA. RI Antonelli, Alex/D-4104-2012 OI Antonelli, Alex/0000-0002-2784-812X NR 21 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1760 EP 1765 DI 10.1116/1.587809 PG 6 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200061 ER PT J AU LIN, XW LILIENTALWEBER, Z WASHBURN, J WEBER, ER SASAKI, A WAKAHARA, A HASEGAWA, T AF LIN, XW LILIENTALWEBER, Z WASHBURN, J WEBER, ER SASAKI, A WAKAHARA, A HASEGAWA, T TI GE/SI HETEROSTRUCTURES GROWN BY SN-SURFACTANT-MEDIATED MOLECULAR-BEAM EPITAXY SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID SI/GE SUPERLATTICES; STEP FLOW; GE; SI; SEGREGATION; SB; LAYER; SUBMONOLAYER; INTERFACES; FILMS AB Ge/Si heterostructures were grown on Si (001) by Sn-submonolayer-mediated molecular beam epitaxy (MBE) and characterized by a variety of techniques, in order to study the behavior of Sn surfactant during Ge and Si growth and its influence on Ge/Si interface quality. It was found that Sn strongly segregates to the growing surface of both Ge and Si and that the presence of Sn surfactant can effectively suppress Ge segregation into a Si overlayer and enhance the surface mobility of adatoms. These results suggest that Sn-mediated epitaxy can be used as a viable method to produce Ge/Si superlattices, with an interface quality superior to those grown either by conventional MBE or with other types of surfactants. (C) 1995 American Vacuum Society. C1 KYOTO UNIV,DEPT ELECT ENGN,KYOTO 606,JAPAN. RP LIN, XW (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. RI Liliental-Weber, Zuzanna/H-8006-2012 NR 26 TC 14 Z9 14 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1805 EP 1809 DI 10.1116/1.587816 PG 5 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200068 ER PT J AU SHUFFLEBOTHAM, PK BARTEL, TJ BERNEY, B AF SHUFFLEBOTHAM, PK BARTEL, TJ BERNEY, B TI EXPERIMENTAL VALIDATION OF A DIRECT SIMULATION BY MONTE-CARLO MOLECULAR GAS-FLOW MODEL SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 2nd Topical Conference on Manufacturing Science and Technology, at the 41st National Symposium of the American-Vacuum-Society CY OCT 24-28, 1994 CL DENVER, CO SP Amer Vacuum Soc AB The Sandia direct simulation Monte Carlo (DSMC) molecular/transition gas how simulation code has significant potential as a computer-aided design tool for the design of vacuum systems in low pressure plasma processing equipment. The purpose of this work was to verify the accuracy of this code through direct comparison to experiment. To test the DSMC model, a fully instrumented, axisymmetric vacuum test cell was constructed, and spatially resolved pressure measurements made in N-2 at flows from 50 to 500 seem. In a ''blind'' test, the DSMC code was used to model the experimental conditions directly, and the results compared to the measurements. It was found that the model predicted all the experimental findings to a high degree of accuracy. Only one modeling issue was uncovered. The axisymmetric model showed localized low pressure spots along the axis next to surfaces. Although this artifact did not significantly alter the accuracy of the results, it did add noise to the axial data. (C) 1995 American Vacuum Society C1 SANDIA NATL LABS,DEPT 1514,ALBUQUERQUE,NM 87185. RP SHUFFLEBOTHAM, PK (reprint author), LAM RES CORP,FREMONT,CA 94538, USA. NR 6 TC 18 Z9 18 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1862 EP 1866 DI 10.1116/1.587825 PG 5 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200078 ER PT J AU THEVUTHASAN, S BAER, DR ENGLEHARD, MH LIANG, Y WORTHINGTON, JN HOWARD, TR MUNN, JR ROUNDS, KS AF THEVUTHASAN, S BAER, DR ENGLEHARD, MH LIANG, Y WORTHINGTON, JN HOWARD, TR MUNN, JR ROUNDS, KS TI DEVELOPMENT OF A MULTITASK AND MULTIINSTRUMENT SAMPLE TRANSFER SYSTEM SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 2nd Topical Conference on Manufacturing Science and Technology, at the 41st National Symposium of the American-Vacuum-Society CY OCT 24-28, 1994 CL DENVER, CO SP Amer Vacuum Soc AB A multiinstrument, multitask UHV sample transfer system being developed for integration with a wide range of synthesis and analysis instruments is described. The specimen transfer capability allows a sample to be synthesized, processed, and characterized by several surface science techniques without exposing the sample to air. Although several types of transfer systems now exist, no existing system has the range of operation desired for a user facility which will be equipped with a wide range of vacuum and controlled atmosphere-based techniques. Three different kinds of sample platens, which can be used in ambient, high-temperature, and surface chemistry experiments, have been designed and tested. The temperature range of the specimen can be as high as 2000 K during heating and as low as 150 K during cooling. (C) 1995 American Vacuum Society C1 THERMION NW INC, PORT TOWNSEND, WA 98368 USA. RP THEVUTHASAN, S (reprint author), PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, POB 999, RICHLAND, WA 99352 USA. RI Engelhard, Mark/F-1317-2010; Baer, Donald/J-6191-2013 OI Baer, Donald/0000-0003-0875-5961 NR 2 TC 11 Z9 11 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1900 EP 1905 DI 10.1116/1.587832 PG 6 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200085 ER PT J AU FEDYNICH, AM RHODES, OE AF FEDYNICH, AM RHODES, OE TI HEMOSPORID (APICOMPLEXA, HEMATOZOEA, HEMOSPORIDA) COMMUNITY STRUCTURE AND PATTERN IN WINTERING WILD TURKEYS SO JOURNAL OF WILDLIFE DISEASES LA English DT Note DE EASTERN WILD TURKEY; MELEAGRIS GALLOPAVO SILVESTRIS; HEMOSPORIDS; LEUCOCYTOZOON SMITHI; HAEMOPROTEUS MELEAGRIDIS; PLASMODIUM SP; COMPONENT COMMUNITY LEVEL; COMMUNITY ECOLOGY ID HAEMOPROTEUS-MELEAGRIDIS; TRANSMISSION; FLORIDA AB The hemosporid community of 76 wild turkeys (Meleagris gallopavo silvestris) from South Carolina (USA) was examined using thin blood smears collected during January and February 1994. High prevalences and low abundances of hemosporids characterized this community. Leucocytozoon smithi and Haemoproteus meleagridis occurred in 100% and 54% of the turkeys, respectively; a Plasmodium sp, was found in one bird. Prevalence of H. meleagridis was significantly higher in juvenile turkeys than adults, but prevalences did not differ significantly among four trap sites or by host sex. Mean (+/-SE) intensities of L. smithi, H. meleagridis, and Plasmodium sp. were 3.4 +/- 0.4, 1.8 +/- 0.3, and 3.0 per 10,000 erythrocytes, respectively. Abundances of L. smithi, N. meleagridis, and Plasmodium sp. were 3.4 +/- 0.4, 0.9 +/- 0.2, and <0.1 +/- <0.1 per 10,000 erythrocytes, respectively. Juvenile turkeys had higher rank abundance values of L. smithi than adults, whereas no differences were found among trap sites or between sexes. No differences in rank abundances of H. meleagridis were found among trap sites, host age, or host sex variables. Collectively, both common hemosporid species varied by host age, reflecting higher abundances in juvenile turkeys. Patterns of hemosporid prevalence appeared similar to patterns found in subtropical regions. Based on our data, we recommend using prevalence and abundance data to analyze the structure and pattern of hemosporid communities at the component community level. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. RP FEDYNICH, AM (reprint author), TEXAS TECH UNIV,HLTH SCI CTR,DEPT PATHOL,3601 4TH ST,LUBBOCK,TX 79430, USA. NR 22 TC 12 Z9 12 U1 3 U2 5 PU WILDLIFE DISEASE ASSN, INC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044-8897 SN 0090-3558 J9 J WILDLIFE DIS JI J. Wildl. Dis. PD JUL PY 1995 VL 31 IS 3 BP 404 EP 409 PG 6 WC Veterinary Sciences SC Veterinary Sciences GA RK432 UT WOS:A1995RK43200021 PM 8592366 ER PT J AU CAPONETTI, E MARTINO, DC FLORIANO, MA TRIOLO, R WIGNALL, GD AF CAPONETTI, E MARTINO, DC FLORIANO, MA TRIOLO, R WIGNALL, GD TI EFFECT OF CROWN-ETHER 1,4,7,10,13,16-HEXAOXACYCLOOCTADECANE ON THE STRUCTURE OF SODIUM DODECYL-SULFATE AND DODECYLTRIMETHYLAMMONIUM BROMIDE AQUEOUS MICELLAR SOLUTIONS SO LANGMUIR LA English DT Article ID SPIN-ECHO MODULATION; ANGLE NEUTRON-SCATTERING; N,N,N',N'-TETRAMETHYLBENZIDINE PHOTOIONIZATION; POLYOXYETHYLENE SULFATE; 5-DOXYLSTEARIC ACID; DOXYLSTEARIC ACID; ALCOHOL ADDITION; RESONANCE; 15-CROWN-5; 18-CROWN-6 AB The effects of the addition of crown ether 1,4,7,10,13,16-hexaoxacyclooctadecane on the structure of aqueous solutions of surfactants sodium dodecyl sulfate and dodecyltrimethylammonium bromide have been studied by small angle neutron scattering. By modeling the scattering intensities, it was possible to derive, simultaneously, both structural properties and information on the distribution of crown ether between the micellar and aqueous phases. In the case of sodium dodecyl sulfate, an appreciable amount of crown ether was found to be localized in the micellar phase, though it was not possible to establish whether it was in the core or in the shell; there was no evidence of crown ether localization in dodecyltrimethylammonium bromide micelles. The above observations indicate that although, at least in principle, the crown ether methylene groups could interact hydrophobically in the micellar core with the surfactant alkyl chains, the ability of crown ethers to form metal complexes might also lead, in sodium dodecyl sulfate solutions, to electrostatic interactions in the external palisade between the crown ether-sodium ion complex and the surfactant head groups. The absence of crown ether from dodecyltrimethylammonium bromide micelles indicates that the macrocyclic molecules interact with sodium dodecyl sulfate micelles via the formation of a complex between the sodium ion and the crown ether and rules out the possibility of hydrophobic interaction in the micellar core. C1 OAK RIDGE NATL LAB, WC KOHELER CTR SMALL ANGLE SCATTERING RES, OAK RIDGE, TN 37836 USA. RP CAPONETTI, E (reprint author), UNIV PALERMO, DIPARTIMENTO CHIM FIS, VIA ARCHIRAFI 26, I-90123 PALERMO, ITALY. RI Chillura Martino, Delia/E-5730-2012; OI Chillura Martino, Delia/0000-0001-5141-7285; CAPONETTI, Eugenio/0000-0003-0218-8556; Wignall, George/0000-0002-3876-3244 NR 41 TC 23 Z9 23 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD JUL PY 1995 VL 11 IS 7 BP 2464 EP 2470 DI 10.1021/la00007a025 PG 7 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA RL572 UT WOS:A1995RL57200026 ER PT J AU SHIH, KC ANGELICI, RJ AF SHIH, KC ANGELICI, RJ TI EQUILIBRIUM AND SATURATION COVERAGE STUDIES OF ALKYL AND ARYL ISOCYANIDES ON POWDERED GOLD SO LANGMUIR LA English DT Article ID SELF-ASSEMBLED MONOLAYERS; TRANSITION-METAL COMPLEXES; ALKANETHIOLATE MONOLAYERS; SURFACES; ADSORPTION; OXYGEN; COPPER; CHEMISORPTION; FILMS; CO AB Isocyanides (C=N-R) adsorbed from 1,2-dichloroethane(DCE) solution on powdered gold were studied by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). Concentration measurements showed that adsorption equilibrium constants decrease in the order: CNPh > CNCH2C(O)OEt > 4-CNC6H4-NO2 > CNBu(n). This is a different order than that (CNBu(t) similar to CNBu(n) > CNCH2C(O)OEt > CNPh > 4-CNC6H4-NO2) observed for the binding of isocyanides in the complex AuCl(C=N-R); this latter order indicates that the isocyanides with the highest sigma-donor ability bind the most strongly. At saturation coverage, the number of moles of adsorbed C=N-R per gram of Au decreases as the size of the R group increases: CNBu(n) > CN(c-C6H11) > CNBu(t) > 2,4,6-CNC6H2(But)(3). For the least bulky isocyanide (CNBu(n)), the ratio of CNBu(n) molecules to surface Au atoms is approximately 1/3.9. From calculated cross-sectional areas of the R groups in the isocyanides, it is estimated that two-thirds of the surface area is covered at saturation coverage for all of the isocyanides. Gold powder that is surface-oxidized by Cl-2 adsorbs CNBu(n) but AuCl-(CNBu(n)) desorbs into the DCE solution. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 69 TC 37 Z9 37 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0743-7463 J9 LANGMUIR JI Langmuir PD JUL PY 1995 VL 11 IS 7 BP 2539 EP 2546 DI 10.1021/la00007a037 PG 8 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA RL572 UT WOS:A1995RL57200038 ER PT J AU Ritchie, B Feit, MD AF Ritchie, B Feit, MD TI Ultrarelativistic binding SO LASER PHYSICS LA English DT Article AB The mathematical and physical basis of a state (called Is' hereafter) of the Klein-Gordon equation with binding energy approximately 2mc(2) for Coulomb forces between two elementary point particles of equal mass and opposite charge is considered. A self-consistent physical interpretation of the state is proposed and shown to be compatible with two-photon annihilation measurements on positronium. In our theory, however, ''annihilation'' is really two-photon decay from the Is to Is' state in the ''positronium atom'' as described by the Klein-Gordon equation. RP Ritchie, B (reprint author), UNIV CALIF,LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. RI Feit, Michael/A-4480-2009 NR 13 TC 2 Z9 2 U1 1 U2 1 PU INTERPERIODICA PI BIRMINGHAM PA PO BOX 1831, BIRMINGHAM, AL 35201-1831 SN 1054-660X J9 LASER PHYS JI Laser Phys. PD JUL-AUG PY 1995 VL 5 IS 4 BP 878 EP 882 PG 5 WC Optics; Physics, Applied SC Optics; Physics GA TX947 UT WOS:A1995TX94700020 ER PT J AU BURTON, HD AF BURTON, HD TI THE ENGINE OF REASON, THE SEAT OF THE SOUL - A PHILOSOPHICAL JOURNEY INTO THE BRAIN - CHURCHLAND,PM SO LIBRARY JOURNAL LA English DT Book Review RP BURTON, HD (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD JUL PY 1995 VL 120 IS 12 BP 115 EP 115 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA RH984 UT WOS:A1995RH98400311 ER PT J AU PEYTON, BW POTHEN, A YUAN, XQ AF PEYTON, BW POTHEN, A YUAN, XQ TI A CLIQUE TREE ALGORITHM FOR PARTITIONING A CHORDAL GRAPH INTO TRANSITIVE SUBGRAPHS SO LINEAR ALGEBRA AND ITS APPLICATIONS LA English DT Article ID SPARSE TRIANGULAR SOLUTION; PARALLEL; ELIMINATION AB A partitioning problem on chordal graphs that arises in the solution of sparse triangular systems of equations on parallel computers is considered. Roughly the problem is to partition a chordal graph G into the fewest transitively orientable subgraphs over all perfect elimination orderings of G, subject to a certain precedence relationship on its vertices. In earlier work, a greedy scheme that solved the problem by eliminating a largest subset of vertices at each step was described, and an algorithm implementing the scheme in time and space linear in the number of edges of the graph was provided. A more efficient greedy scheme, obtained by representing the chordal graph in terms of its maximal cliques, is described here. The new greedy scheme eliminates, in a specified order, a largest set of ''persistent leaves,'' a subset of the leaf cliques in the current graph, at each step. Several new results about minimal vertex separators in chordal graphs, and in particular, the concept of a critical separator of a leaf clique, are employed to prove that the new scheme solves the partitioning problem. We provide an algorithm implementing the scheme in time and space linear in the size of the clique tree. We anticipate that a critical separator of a leaf clique may be a useful concept in other problems on chordal graphs. C1 OLD DOMINION UNIV,DEPT COMP SCI,NORFOLK,VA 23529. NASA,LANGLEY RES CTR,ICASE,HAMPTON,VA 23681. IBM CORP,CANADA LAB,N YORK,ON M3C 1H7,CANADA. RP PEYTON, BW (reprint author), OAK RIDGE NATL LAB,MATH SCI SECT,POB 2008,OAK RIDGE,TN 37831, USA. OI Pothen, Alex/0000-0002-3421-3325 NR 20 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0024-3795 J9 LINEAR ALGEBRA APPL JI Linear Alg. Appl. PD JUL PY 1995 VL 224 BP 553 EP 588 PG 36 WC Mathematics, Applied; Mathematics SC Mathematics GA RF722 UT WOS:A1995RF72200033 ER PT J AU VANDENBERG, JJM COOK, NE TRIBBLE, DL AF VANDENBERG, JJM COOK, NE TRIBBLE, DL TI REINVESTIGATION OF THE ANTIOXIDANT PROPERTIES OF CONJUGATED LINOLEIC-ACID SO LIPIDS LA English DT Article ID DIENOIC DERIVATIVES; LIPID-PEROXIDATION; CANCER-CELLS; IDENTIFICATION; BILE AB Despite repeated suggestions that antioxidant activity of conjugated linoleic acid (CLA), a collective of conjugated dienoic isomers of linoleic acid, underlies its reported anticarcinogenic and antiatherosclerotic effects, the antioxidant properties of CLA remain ill-defined. Therefore, this study was undertaken to gain more insight into the mechanism of potential CLA antioxidant activity. It was tested whether CLA could protect membranes composed of 1-palmitoyl-2-linoleoyl phosphatidylcholine (PLPC) from oxidative modification under conditions of metal ion-dependent or -independent oxidative stress. Progress of oxidation was determined by direct spectrophotometric measurement of conjugated diene formation and by gas chromatographic/mass spectrometric analysis of fatty acids. The oxidative susceptibility of CLA was higher than that of linoleic acid, and comparable to arachidonic acid. When oxidation of PLPC (1.0 mM) was initiated using the lipid-soluble 2,2'-azobis(2,4-dimethylvaleronitrile) or the water-soluble 2,2'-azobis(2-amidinopropane) hydrochloride, the radical scavengers vitamin E and butylated hydroxytoluene (BHT) at 0.75 mu M efficiently inhibited PLPC oxidation, as evident from a dear lag phase, In contrast, 0.75 mu M CFA did not have any significant effect on PLPC oxidation. Inhibition of PLPC oxidation by higher concentrations of CLA appeared due to competition, not to an antioxidant effect. When oxidation of PLPC was initiated by hydrogen peroxide/Fe2+ (500 mu M/0.05-20 mu M), both vitamin E (1 mu M) and ethylene glycol-bis(aminoethyl ether) tetraacetic acid (50 mu M) efficiently inhibited PLPC oxidation. However, CLA (1-50 mu M) did not show a clear protective effect under any of the conditions tested. We conclude that CLA, under these test conditions, does not act as an efficient radical scavenger in any way comparable to vitamin E or BHT, CLA also does not appear to be converted into a metal chelator under metal-ion dependent oxidative stress, as had previously been suggested. On the basis of our observations, a role for CLA as an antioxidant does not seem plausible. C1 CHILDRENS HOSP, OAKLAND RES INST, OAKLAND, CA 94609 USA. UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DEPT MOLEC & NUCL MED, BERKELEY, CA 94720 USA. FU NIDDK NIH HHS [DK 34400] NR 26 TC 132 Z9 134 U1 1 U2 8 PU SPRINGER HEIDELBERG PI HEIDELBERG PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY SN 0024-4201 EI 1558-9307 J9 LIPIDS JI Lipids PD JUL PY 1995 VL 30 IS 7 BP 599 EP 605 PG 7 WC Biochemistry & Molecular Biology; Nutrition & Dietetics SC Biochemistry & Molecular Biology; Nutrition & Dietetics GA RK293 UT WOS:A1995RK29300004 PM 7564914 ER PT J AU WUNDERLICH, B AF WUNDERLICH, B TI LARGE-AMPLITUDE MOTION IN POLYMER CRYSTALS AND MESOPHASES SO MACROMOLECULAR SYMPOSIA LA English DT Article; Proceedings Paper CT 35th IUPAC International Symposium on Macromolecules (MACROAKRON 94) CY JUL 11-19, 1994 CL UNIV AKRON, AKRON, OH SP Int Union Pure & Appl Chem HO UNIV AKRON ID MOLECULAR-DYNAMICS SIMULATIONS; CONFORMATIONAL DISORDER; POLYMETHYLENE CRYSTALS; NORMAL-ALKANES; POLYETHYLENE; DETAILS; DEFECTS AB Large-amplitude motion of macromolecules involves mainly rotation about bonds (conformational motion). In the liquid phases, the large-amplitude motion is coupled with disorder and accounts for the now and viscoelastic behavior. Perfectly ordered crystals, in contrast, permit only little large-amplitude motion. The mesophases are intermediate in order and mobility. In crystals, large-amplitude motion leads initially to gauche defects and kinks (conformational defects), and ultimately may produce conformationally disordered crystals (condis crystals). Molecular dynamics simulations of crystals with up to 30 000 atoms have been carried out. They show the mechanism of defect formation, permit the study of the distribution of defects, and lead to a visualization of the hexagonal crystal phase. The main-chain liquid-crystalline macromolecules and condis crystals, the two mesophases of polymers, can be distinguished on the basis of an analysis of the phase separation (partial crystallinity), present in condis crystals and not in liquid crystals. Solid state NMR is the tool of choice for the detection of mobile and rigid phases. In highly drawn fibers one can find four different states of order and mobility. Besides the (defect) crystalline phase and the isotropic amorphous phase, an intermediate oriented phase and a rigid amorphous phase exist. C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. RP WUNDERLICH, B (reprint author), UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996, USA. NR 37 TC 8 Z9 8 U1 0 U2 1 PU HUTHIG & WEPF VERLAG PI BASEL PA AUF DEM WOLF 4 FX#001-41-61-317-94-11, CH-4052 BASEL, SWITZERLAND SN 1022-1360 J9 MACROMOL SYMP JI Macromol. Symp. PD JUL PY 1995 VL 98 BP 1069 EP 1084 DI 10.1002/masy.19950980195 PG 16 WC Polymer Science SC Polymer Science GA RZ124 UT WOS:A1995RZ12400072 ER PT J AU WOZNY, CE NOID, DW SUMPTER, BG AF WOZNY, CE NOID, DW SUMPTER, BG TI THE ORIGINS OF AVOIDED CROSSINGS IN POLYMER DISPERSION-CURVES SO MACROMOLECULAR THEORY AND SIMULATIONS LA English DT Article ID RESONANCES; SYSTEMS AB A purely mathematical heuristic model is examined in order to explain the existence of an avoided crossing between two dispersion curves calculated for a certain potential energy surface designed to simulate the dynamics of a linear polyethylene chain. The model shows that a third mode coupled to a two-mode Fermi-resonant system is able to create a marked instability in a vibrational spectrum. It is noted that such an explanation would require a fourth-order coupling term, which is the reason given for the failure of normal mode analysis to properly identify this dynamical effect. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP WOZNY, CE (reprint author), WAYCROSS COLL,2001 GEORGIA PKWY,WAYCROSS,GA 31501, USA. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 15 TC 2 Z9 2 U1 0 U2 0 PU HUTHIG & WEPF VERLAG PI BASEL PA AUF DEM WOLF 4 FX#001-41-61-317-94-11, CH-4052 BASEL, SWITZERLAND SN 1022-1344 J9 MACROMOL THEOR SIMUL JI Macromol. Theory Simul. PD JUL PY 1995 VL 4 IS 4 BP 709 EP 723 DI 10.1002/mats.1995.040040408 PG 15 WC Polymer Science SC Polymer Science GA RJ136 UT WOS:A1995RJ13600008 ER PT J AU HOLDENER, BC RINCHIK, EM MAGNUSON, T AF HOLDENER, BC RINCHIK, EM MAGNUSON, T TI PHENOTYPIC AND PHYSICAL ANALYSIS OF A CHEMICALLY-INDUCED MUTATION DISRUPTING ANTERIOR AXIAL DEVELOPMENT IN THE MOUSE SO MAMMALIAN GENOME LA English DT Note ID CHROMOSOME-7 C1 CASE WESTERN RESERVE UNIV,DEPT GENET,CLEVELAND,OH 44106. OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831. FU NHGRI NIH HHS [HG00370]; NICHD NIH HHS [HD-2446]; NIGMS NIH HHS [GM2257] NR 9 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0938-8990 J9 MAMM GENOME JI Mamm. Genome PD JUL PY 1995 VL 6 IS 7 BP 474 EP 475 DI 10.1007/BF00360658 PG 2 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity GA RG988 UT WOS:A1995RG98800008 PM 7579891 ER PT J AU MOORE, DG AF MOORE, DG TI NONDESTRUCTIVE INSPECTION OF PIPER PA25 FORWARD SPAR FITTINGS SO MATERIALS EVALUATION LA English DT Article RP MOORE, DG (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD JUL PY 1995 VL 53 IS 7 BP 795 EP 796 PG 2 WC Materials Science, Characterization & Testing SC Materials Science GA RJ147 UT WOS:A1995RJ14700002 ER PT J AU WALTER, P AF WALTER, P TI THE FAAS AGING AIRCRAFT NONDESTRUCTIVE INSPECTION VALIDATION CENTER AT SANDIA-NATIONAL-LABORATORIES - AN INTRODUCTION SO MATERIALS EVALUATION LA English DT Editorial Material RP WALTER, P (reprint author), SANDIA NATL LABS,CTR AGING AIRCRAFT NONDESTRUCT INSPECT VALIDAT,MS-0616,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD JUL PY 1995 VL 53 IS 7 BP 799 EP 802 PG 4 WC Materials Science, Characterization & Testing SC Materials Science GA RJ147 UT WOS:A1995RJ14700003 ER PT J AU ROACH, D HARMON, K JONES, C WALKINGTON, P AF ROACH, D HARMON, K JONES, C WALKINGTON, P TI AIRCRAFT INSPECTION VALIDATION EXPERIMENTS AND THE USE OF NDI VALIDATION SAMPLES SO MATERIALS EVALUATION LA English DT Article C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 4 TC 1 Z9 1 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD JUL PY 1995 VL 53 IS 7 BP 803 EP 807 PG 5 WC Materials Science, Characterization & Testing SC Materials Science GA RJ147 UT WOS:A1995RJ14700004 ER PT J AU BRECHLING, VJ SPENCER, FW AF BRECHLING, VJ SPENCER, FW TI THE VALIDATION PROCESS AS APPLIED TO THE MAGNETOOPTIC EDDY-CURRENT IMAGER (MOI) SO MATERIALS EVALUATION LA English DT Article C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP BRECHLING, VJ (reprint author), NORTHWESTERN UNIV,CTR TRANSPORTAT,1936 SHERIDAN RD,EVANSTON,IL 60208, USA. NR 5 TC 5 Z9 5 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD JUL PY 1995 VL 53 IS 7 BP 815 EP 818 PG 4 WC Materials Science, Characterization & Testing SC Materials Science GA RJ147 UT WOS:A1995RJ14700005 ER PT J AU GIESKE, JH AF GIESKE, JH TI AVIATION FOCUSED EDDY-CURRENT AND ULTRASONIC SCANNER ASSESSMENT SO MATERIALS EVALUATION LA English DT Article RP GIESKE, JH (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD JUL PY 1995 VL 53 IS 7 BP 820 EP 826 PG 7 WC Materials Science, Characterization & Testing SC Materials Science GA RJ147 UT WOS:A1995RJ14700007 ER PT J AU ASHBAUGH, M SPENCER, F AF ASHBAUGH, M SPENCER, F TI PROTOCOL ASSESSMENT OF A FIELD RELIABILITY EXPERIMENT AT THE NDI VALIDATION CENTER SO MATERIALS EVALUATION LA English DT Article C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP ASHBAUGH, M (reprint author), SCI APPLICAT INT CORP,2109 AIR PK RD,ALBUQUERQUE,NM 87106, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD JUL PY 1995 VL 53 IS 7 BP 827 EP 828 PG 2 WC Materials Science, Characterization & Testing SC Materials Science GA RJ147 UT WOS:A1995RJ14700008 ER PT J AU KOMSKY, IN ACHENBACH, JD ANDREW, G GRILLS, B REGISTER, J LINKERT, G HUETO, GM STEINBERG, AL ASHBAUGH, M MOORE, DG MOORE, G WEBER, H AF KOMSKY, IN ACHENBACH, JD ANDREW, G GRILLS, B REGISTER, J LINKERT, G HUETO, GM STEINBERG, AL ASHBAUGH, M MOORE, DG MOORE, G WEBER, H TI AN ULTRASONIC TECHNIQUE TO DETECT CORROSION IN DC-9 WING BOX FROM CONCEPT TO FIELD APPLICATION SO MATERIALS EVALUATION LA English DT Article AB Current procedures to inspect for corrosion of T-caps in the wing box of the DC-9 require entry into the fuel tank for visual inspection. This paper describes the development of lan ultrasonic technique to detect T-cap corrosion by scanning the multi-layered wing structure from the outside. The development of the technique is described from its conceptual phase, through the preliminary design of a prototype ultrasonic unit which was extensively tested in the laboratory and subsequently at the Northwest Airlines maintenance facility, to testing of the technique and the unit under field conditions at Northwest Airlines and the facility of Dee Howard, a major independent maintenance facility located in San Antonio, Texas, to plans for revision of the Service Bulletin. Field implementation of the new technique will provide major cost reductions by eliminating the need for fuel tank entry. C1 ULTRA IMAGE INT,SAIC,NEW LONDON,CT 06320. NW AIRLINES,ST PAUL,MN 55111. MCDONNELL DOUGLAS AIRCRAFT CO,LONG BEACH,CA 90810. SCI APPLICAT INT CORP,ALBUQUERQUE,NM 87106. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. WEBER TECHNOL APPLICAT,SAN DIEGO,CA 92120. RP KOMSKY, IN (reprint author), NORTHWESTERN UNIV,CTR QUAL ENGN & FAILURE PREVENT,CASR,EVANSTON,IL 60208, USA. RI Achenbach, Jan/B-6746-2009 NR 2 TC 3 Z9 3 U1 0 U2 0 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD JUL PY 1995 VL 53 IS 7 BP 848 EP 852 PG 5 WC Materials Science, Characterization & Testing SC Materials Science GA RJ147 UT WOS:A1995RJ14700011 ER PT J AU RIEKE, PC AF RIEKE, PC TI SELECTION OF PHASE AND CONTROL OF ORIENTATION DURING PHYSISORPTION ON SURFACES OF HOMOGENEOUSLY FORMED CALCIUM-CARBONATE NUCLEI SO MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC MATERIALS SENSORS AND SYSTEMS LA English DT Article DE PHASE SELECTION; ORIENTATION CONTROL; PHYSISORPTION; CALCIUM CARBONATE NUCLEI ID LANGMUIR MONOLAYERS; CRYSTALLIZATION; NUCLEATION; BIOMINERALIZATION; CRYSTALS; DEPOSITION; PROTEINS; SULFATE; GROWTH; MATRIX AB The physisorption of homogeneously formed nuclei was shown to result in the preferential formation of different phases of calcium carbonate on different surfaces and the orientation of the crystallites. Calcium carbonate polymorphs were grown on clean polystyrene and glass substrates by diffusion of ammonium carbonate vapors into calcium chloride solutions. The substrates were arranged both vertically and horizontally. Oriented crystallites of vaterite and calcite were formed on the two substrates, although the number and type of crystallites were strongly dependent on both the type of substrate and the arrangement of the substrate. Polystyrene strongly favored vaterite, whereas glass favored calcite. The observation of crystal orientation and the preference of each surface for a particular polymorph suggest a significant role for the surface, presumably via heterogeneous nucleation. However, comparison of the density of crystals on horizontal and vertical substrates indicates that sedimentation influences the distribution of the crystallites. To achieve an influence of sedimentation, the homogeneously formed nuclei must grow to a significant size (0.03-1.0 mu m) prior to physisorption onto the substrates. Subsequently, these nuclei either undergo a phase transformation to the observed polymorph or two different polymorphs are formed spontaneously and physisorbed preferentially on the two types of substrate. Orientation of the crystallites was thought to occur during physisorption. This work demonstrates that heterogeneous nucleation is not required to control orientation and achieve phase selection. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 47 TC 10 Z9 11 U1 0 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0928-4931 J9 MAT SCI ENG C-BIOMIM JI Mater. Sci. Eng. C-Biomimetic Mater. Sens. Syst. PD JUL PY 1995 VL 2 IS 3 BP 181 EP 189 DI 10.1016/0928-4931(95)00064-X PG 9 WC Materials Science, Multidisciplinary SC Materials Science GA RP793 UT WOS:A1995RP79300007 ER PT J AU BURNHAM, AK BRAUN, RL AF BURNHAM, AK BRAUN, RL TI COMMENTS ON LERCHE (1993) AND LIU AND LERCHE (1993) SO MATHEMATICAL GEOLOGY LA English DT Letter ID MARINE SOURCE ROCKS; HYDROCARBON GENERATION; PETROLEUM FORMATION; KINETIC-MODELS; PYROLYSIS KINETICS; INVERSE METHODS; MATURATION; PARAMETERS; REFLECTANCE; LACUSTRINE RP BURNHAM, AK (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551, USA. NR 21 TC 0 Z9 0 U1 0 U2 2 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0882-8121 J9 MATH GEOL JI Math. Geol. PD JUL PY 1995 VL 27 IS 5 BP 693 EP 699 DI 10.1007/BF02093908 PG 7 WC Geosciences, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Geology; Mathematics GA RV336 UT WOS:A1995RV33600008 ER PT J AU DAVISON, L AF DAVISON, L TI KINEMATICS OF FINITE ELASTOPLASTIC DEFORMATION SO MECHANICS OF MATERIALS LA English DT Article DE ELASTOPLASTICITY; PLASTICITY; DISLOCATIONS; SLIP ID ELASTO-PLASTICITY; DECOMPOSITION; CRYSTALS AB A model in which plastic deformation occurs as a result of crystallographic slip is used to derive a formula for decomposing a deformation gradient into parts attributable to elastic and plastic deformation processes. The dislocation kinematics are those in long use, for example by Rice (1971, J. Mech. Phys. Solids 19, 433) and by Hill and Havner (1982, J. Mech. Phys. Solids 30, 5). The analysis presented here differs from that given by these authors in that it concerns total deformation (and its elastic and plastic parts) rather than incremental deformation. The decomposition obtained is inherent in the physics of the deformation process, arising naturally when the spatial discreteness of the active slip planes is taken into account. Expressions for the decomposition components are obtained by means of volumetric averaging of contributions of elastic deformation and slip to the total deformation. The decomposition captures the effects of isoclinic orientation central to Mandel's (1973, Int. J. Solids Struct. 9, 725) theory, but without introduction of the intermediate configuration that arises when the deformation is assumed to be expressible as though the plastic and elastic deformations occurred sequentially. Because no intermediate configuration arises, the established objectivity principle applies without modification and the concept of elastic embedding that is essential to proper selection of temporal rates is implemented quite naturally. Although the new decomposition is motivated by dislocation-mechanical considerations, the result is a continuum-mechanical expression that can be used in other contexts in which the sites of inelastic deformation are spatially separated in the material. C1 SANDIA NATL LABS,CTR ENGN SCI,ALBUQUERQUE,NM 87185. NR 16 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-6636 J9 MECH MATER JI Mech. Mater. PD JUL PY 1995 VL 21 IS 1 BP 73 EP 88 DI 10.1016/0167-6636(94)00073-5 PG 16 WC Materials Science, Multidisciplinary; Mechanics SC Materials Science; Mechanics GA RH146 UT WOS:A1995RH14600004 ER PT J AU ROBINO, CV CIESLAK, MJ AF ROBINO, CV CIESLAK, MJ TI HIGH-TEMPERATURE METALLURGY OF ADVANCED BORATED STAINLESS-STEELS SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID PARTICLE DIFFUSION PROBLEM; VOLUME FRACTION; OSTWALD; DEPENDENCE AB The high-temperature metallurgy of advanced berated stainless steels has been evaluated through differential thermal analysis, aging studies, quantitative metallography, and impact toughness measurements. Differential thermal analysis (DTA) was conducted on alloys containing a range of boron concentrations and was used to determine the temperatures associated with melting/solidification reactions. Aging studies, conducted at temperatures near the solidus, were used to determine the effects of elevated temperature exposures on impact properties and microstructure. Differential thermal analysis quantified the solidus and liquidus temperatures as a function of boron concentration. Impact testing of samples aged at temperatures near the solidus indicated only moderate reductions in toughness. Particle shape measurements indicated that the boride particles were initially nearly spherical and remained so during elevated temperature exposure, although some faceting and agglomeration of the borides did occur. Measurements of boride particle size distributions were used to define the time, temperature, and composition dependence of the boride coarsening. Coarsening data were analyzed in terms of current coarsening models. These analyses indicated that the boride particle coarsening followed the theoretically predicted t(1/3) time dependence and that the coarsening rate increased with increasing volume fraction of the boride phase. Analysis of the particle size data for aging at various temperatures indicated that the boride coarsening was consistent with the activation energy for Cr diffusion in austenite. Scanning electron microscopy of the impact fracture surfaces showed that the failure mode in isothermally heat-treated samples was ductile and essentially identical to the failure mode for as-received material. C1 SANDIA NATL LABS,DEPT PHYS & JOINING MET,ALBUQUERQUE,NM 87185. RP ROBINO, CV (reprint author), SANDIA NATL LABS,TECH STAFF,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 22 TC 24 Z9 25 U1 1 U2 2 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JUL PY 1995 VL 26 IS 7 BP 1673 EP 1685 DI 10.1007/BF02670754 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RJ768 UT WOS:A1995RJ76800005 ER PT J AU KEKARE, SA TONEY, JB ASWATH, PB AF KEKARE, SA TONEY, JB ASWATH, PB TI OXIDATION OF DUCTILE PARTICLE-REINFORCED TI-48AL COMPOSITE SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article AB The oxidation behavior of a ductile TiNb particle reinforced Ti-48Al (at. pet) system was studied at different temperatures. The objective of this work was to establish the role played by the TiNb reinforcement on the oxidation process. The activation energy for oxidation of Ti-48Al was 324 kJ/mol and that of Ti-48Al-20 vol pet TiNb was 315 kJ/mol. The kinetics of oxidation of both the material systems are similar. At 982 degrees C, the outermost oxide layer in contact with air was always near stoichiometric TiO2. In all the alloys, a layer of porosity was created just below the outer TiO2 layer by the Kirkendall mechanism as a result of the rapid outward diffusion of Ti atoms. TiNb particles are more oxidation resistant than Ti-48Al. The boundary of the TiNb particles was oxidized to form TiO2. However, most of the TiNb particles were untouched and existed as islands embedded within the Ti and Al oxides formed by oxidation of Ti-48Al. Oxidation in pure oxygen lowers the oxidation kinetics, as compared to oxidation in pure air for identical gas flow rates at 982 degrees C. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP KEKARE, SA (reprint author), UNIV TEXAS,DEPT MAT SCI & ENGN,ARLINGTON,TX 76019, USA. RI Aswath, Pranesh/A-7184-2009 OI Aswath, Pranesh/0000-0003-2885-1918 NR 19 TC 21 Z9 24 U1 0 U2 3 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JUL PY 1995 VL 26 IS 7 BP 1835 EP 1845 DI 10.1007/BF02670771 PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RJ768 UT WOS:A1995RJ76800022 ER PT J AU FLETCHER, M FREDRICKSON, JK AF FLETCHER, M FREDRICKSON, JK TI JOINT EDITORIAL - TO MARK A CHANGE IN EDITORSHIP OF MICROBIAL-ECOLOGY SO MICROBIAL ECOLOGY LA English DT Editorial Material C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP FLETCHER, M (reprint author), UNIV MARYLAND, CTR MARINE BIOTECHNOL, 600 E LOMBARD ST, BALTIMORE, MD 21202 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0095-3628 J9 MICROBIAL ECOL JI Microb. Ecol. PD JUL-AUG PY 1995 VL 30 IS 1 BP 1 EP 2 PG 2 WC Ecology; Marine & Freshwater Biology; Microbiology SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Microbiology GA RF818 UT WOS:A1995RF81800001 PM 24185408 ER PT J AU YEH, ML DIPOJONO, HK KHAN, FS AF YEH, ML DIPOJONO, HK KHAN, FS TI COUPLING OF THE FICTITIOUS ELECTRONS AND THE IONS IN THE FICTITIOUS LAGRANGIAN METHOD SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article ID MOLECULAR-DYNAMICS CALCULATIONS; CLUSTERS; SILICON; SURFACES; SYSTEMS; CARBON AB For the fictitious Lagrangian method to be successful in simulating the physical trajectories of ions, there should be very little energy exchange between the light 'electronic' and heavy ionic degrees of freedom. We present a detailed and methodical investigation of the coupling of the classical fictitious electrons and the ions by analyzing the classical problem of the coupling of light particles and heavy particles. We decompose the motion into normal modes (phonons) of the system, then energy exchange between the 'electrons' and the ions is a result of scattering between the phonons arising from the 'electron'-ion interaction and the ion-ion interaction. We show that, for sufficiently small 'electronic' mass, this scattering is negligibly weak because of energy conservation. Thus the energy of the electronic subsystem is conserved, and the whole system is never allowed to reach equipartition for the duration of a practical simulation. We also present a simple derivation which relates the frequency at which the 'electrons' oscillate around the Born-Oppenheimer surface to the physical electronic spectrum of the material being simulated. We also tie up some odds and ends regarding the few remaining questions about the fictitious Lagrangian method, such as the difference between the results obtained from the Gram-Schmidt and SHAKE method of orthonormalization, and differences between simulations where the electrons are quenched to the Born-Oppenheimer surface only once compared with periodic quenching. C1 OHIO STATE UNIV,DEPT ELECT ENGN,COLUMBUS,OH 43210. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. OI Dipojono, Hermawan/0000-0002-1391-3533 NR 20 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD JUL PY 1995 VL 3 IS 4 BP 551 EP 574 DI 10.1088/0965-0393/3/4/010 PG 24 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA RK933 UT WOS:A1995RK93300010 ER PT J AU ROSSBACH, S RASUL, G SCHNEIDER, M EARDLY, B DEBRUIJN, FJ AF ROSSBACH, S RASUL, G SCHNEIDER, M EARDLY, B DEBRUIJN, FJ TI STRUCTURAL AND FUNCTIONAL CONSERVATION OF THE RHIZOPINE CATABOLISM (MOC) LOCUS IS LIMITED TO SELECTED RHIROBIUM-MELILOTI STRAINS AND UNRELATED TO THEIR GEOGRAPHICAL ORIGIN SO MOLECULAR PLANT-MICROBE INTERACTIONS LA English DT Article DE MEDICAGO SATIVA; REP-PCR ID POLYMERASE CHAIN-REACTION; RHIZOBIUM-MELILOTI; SYM PLASMID; BACTERIA; NODULATION; SEQUENCES; BRADYRHIZOBIUM; LEGUMINOSARUM; COMPETITION; ENVIRONMENT AB Rhizopine (L -3-O-methyl-scyllo -inosamine; 3-O-MSI) synthesis (mos) and catabolism (moc) genes were originally isolated from Rhizobium meliloti strain L5-30 Murphy et al., Proc. Natl. Acad. Sci. U.S.A., 84:493, 1987). These genes have been postulated to give a competitive advantage to this strain in the rhizosphere, since the ability to utilize the unusual nutritional mediator rhizopine as nitrogen and carbon source appears to be correlated with the ability of Moc(+) bacteria to efficiently infect alfalfa plants, This study examines the distribution of rhizopine catabolism (moc) genes among different soil bacteria. By using oligonucleotide primers homologous to the moc genes and the polymerase chain reaction (PCR), moc genes were shown to be absent from a random collection of 100 different soil isolates, However, screening 50 different electrophoretic type strains of a worldwide R. meliloti collection (Eardly et al., Appl. Environ, Microbiol, 56:187, 1990) revealed the presence of moc genes in three additional strains, S33, 102F51, and 74B3. These three strains were found to be able to synthesize rhizopine in planta (Mos(+)) and to catabolize it (Moc(+)). To determine the relatedness of the Mos(+)/Moc(+) strains to each other and to other R. meliloti strains, we used the rep-PCR method to generate genomic fingerprints, and to create a phylogenetic tree with the help of an optical imaging system and data analysis program (AMBIS), Because of the apparent infrequent occurrence of moc genes among soil bacteria, we suggest that the use of moc genes as a selectable marker trait for tracking genetically manipulated organisms is feasible. C1 MICHIGAN STATE UNIV,NSF,CTR MICROBIAL ECOL,E LANSING,MI 48824. MICHIGAN STATE UNIV,DOE,PLANT RES LAB,E LANSING,MI 48824. MICHIGAN STATE UNIV,DEPT MICROBIOL,E LANSING,MI 48824. PENN STATE UNIV,READING,PA 19610. NR 44 TC 25 Z9 25 U1 0 U2 1 PU AMER PHYTOPATHOLOGICAL SOC PI ST PAUL PA 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 SN 0894-0282 J9 MOL PLANT MICROBE IN JI Mol. Plant-Microbe Interact. PD JUL-AUG PY 1995 VL 8 IS 4 BP 549 EP 559 DI 10.1094/MPMI-8-0549 PG 11 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Plant Sciences SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Plant Sciences GA RL683 UT WOS:A1995RL68300009 PM 8589411 ER PT J AU SPOSATO, P AHN, JH WALTON, JD AF SPOSATO, P AHN, JH WALTON, JD TI CHARACTERIZATION AND DISRUPTION OF A GENE IN THE MAIZE PATHOGEN COCHLIOBOLUS-CARBONUM ENCODING A CELLULASE LACKING A CELLULOSE-BINDING DOMAIN AND HINGE REGION SO MOLECULAR PLANT-MICROBE INTERACTIONS LA English DT Article ID TRICHODERMA-REESEI; PHANEROCHAETE-CHRYSOSPORIUM; CELLOBIOHYDROLASE GENE; EXTRACELLULAR ENZYMES; LIMITED PROTEOLYSIS; MOLECULAR-CLONING; CELL-WALLS; SEQUENCE; ENDOPOLYGALACTURONASE; MECHANISM AB A gene, CEL1, in the maize pathogen Cochliobolus carbonum was identified using the cbh1-3 gene of Phanerochaete chrysosporium as a heterologous probe, The predicted product of CEL1, Cel1, is 62% identical and 71% similar to the product of cbh1-3 and 54 to 62% identical to five cellobiohydrolases from other filamentous fungi, The location of the polyadenylation site 221 bp downstream of the stop codon and the location of a single intron of 55 bp were identified by comparison of the sequences of genomic and cDNA copies of CEL1. The transcriptional start site was determined by rapid amplification of cDNA ends (RACE) to be 39 bp upstream of the putative translational start site, CEL1 mRNA abundance is high when C. carbonum is grown on cellulose or maize cell walls but is undetectable when grown on 2% sucrose or cellulose plus sucrose. Cel1 has a predicted signal peptide of 18 amino acids and therefore a mature size of 46.4 kDa, Like the product of cbh1-1 of P. chrysosporium, but unlike most other endoglucanases and cellobiohydrolases (including the predicted product of cbh1-3), Cel1 does not have a putative cellulose binding domain or associated hinge region, The codon bias of CEL1 is stronger than the bias of cbh1-1 and comparable to that of cbh1-3 and that of the C, carbonum genes PGN1 and XYL1, (encoding endopolygalacturonase and endo-xylanase, respectively), A strain of C, carbonum specifically mutated at CEL1 was produced by transformation with a truncated copy of CEL1, Integration and disruption of CEL1 in the mutant was confirmed by DNA and RNA blotting, Pathogenicity of the CEL1 mutant was indistinguishable from the wildtype, indicating that CEL1 by itself is not a critical disease determinant, Culture filtrates of C, carbonum grown on cellulose or maize cell walls had several cellobiohydrolase, endoglucanase, and beta-glucosidase activities that were separable by chromatofocusing, hydrophobic interaction, or ion-exchange high-performance liquid chromatography. However, all of the activities that were found were present in both the wild type and the CEL1 mutant and therefore are not Cel1. C1 MICHIGAN STATE UNIV,DOE,PLANT RES LAB,E LANSING,MI 48824. NR 39 TC 45 Z9 47 U1 0 U2 3 PU AMER PHYTOPATHOLOGICAL SOC PI ST PAUL PA 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 SN 0894-0282 J9 MOL PLANT MICROBE IN JI Mol. Plant-Microbe Interact. PD JUL-AUG PY 1995 VL 8 IS 4 BP 602 EP 609 DI 10.1094/MPMI-8-0602 PG 8 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Plant Sciences SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Plant Sciences GA RL683 UT WOS:A1995RL68300015 PM 8589415 ER PT J AU CLOUD, KG SHEN, BH STRNISTE, GF PARK, MS AF CLOUD, KG SHEN, BH STRNISTE, GF PARK, MS TI XPG PROTEIN HAS A STRUCTURE-SPECIFIC ENDONUCLEASE ACTIVITY SO MUTATION RESEARCH LETTERS LA English DT Article DE DNA REPAIR; XERODERMA PIGMENTOSUM GROUP G; BACULOVIRUS EXPRESSION SYSTEM; NUCLEAR PROTEIN; IMMUNOFLUORESCENCE, FLAP ENDONUCLEASE ID EXCISION-REPAIR; ERCC5 AB Biochemically active human DNA repair protein, xeroderma pigmentosum G (XPG), was overexpressed in insect cells by a recombinant baculovirus. The recombinant baculovirus produced XPG with a mobility of similar to 185 kDa in a denaturing polyacrylamide gel. Indirect immunofluorescence studies demonstrated that the recombinant full-length XPG protein was expressed predominantly as a nuclear protein. The recombinant XPG protein was purified to apparent homogeneity using Q-sepharose, S-300 size exclusion, and Mono Q column chromatography. XPG protein showed a structure-specific DNA endonuclease activity, and a preferential affinity to single-stranded DNA and RNA compared to double-stranded DNA. C1 LOS ALAMOS NATL LAB,DIV LIFE SCI,LOS ALAMOS,NM 87545. NR 17 TC 32 Z9 34 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-7992 J9 MUTAT RES LETT JI Mutat. Res. Lett. PD JUL PY 1995 VL 347 IS 2 BP 55 EP 60 DI 10.1016/0165-7992(95)90070-5 PG 6 WC Genetics & Heredity; Toxicology SC Genetics & Heredity; Toxicology GA RN222 UT WOS:A1995RN22200001 PM 7651464 ER PT J AU HECHT, JT NELSON, LD CROWDER, E WANG, Y ELDER, FFB HARRISON, WR FRANCOMANO, CA PRANGE, CK LENNON, GG DEERE, M LAWLER, J AF HECHT, JT NELSON, LD CROWDER, E WANG, Y ELDER, FFB HARRISON, WR FRANCOMANO, CA PRANGE, CK LENNON, GG DEERE, M LAWLER, J TI MUTATIONS IN EXON 17B OF CARTILAGE OLIGOMERIC MATRIX PROTEIN (COMP) CAUSE PSEUDOACHONDROPLASIA SO NATURE GENETICS LA English DT Article ID THROMBOSPONDIN; EXPRESSION; DYSPLASIA; DOMINANT; COLLAGEN; BINDING; GENE AB Pseudoachondroplasia (PSACH) is a well characterized dwarfing condition mapping to chromosome 19p12-13.1. Cartilage oligomeric matrix protein (COMP), a cartilage specific protein, maps to the same location within a contig that spans the PSACH locus. Using single strand conformation polymorphism (SSCP) analysis and nucleotide sequencing we have identified COMP mutations in eight familiar and isolated PSACH cases. All mutations involve either a single base-pair change or a three base-pair deletion in exon 17B. Six mutations delete or change a well conserved aspartic acid residue within the calcium-binding type 3 repeats. These results demonstrate that mutations in the COMP gene cause pseudochondroplasia. C1 UNIV TEXAS,SCH MED,DEPT PATHOL,HOUSTON,TX 77225. NIH,NATL CTR HUMAN GENOME RES,BETHESDA,MD 20892. LAWRENCE LIVERMORE NATL LAB,CTR HUMAN GENOME,LIVERMORE,CA 94551. HARVARD UNIV,BRIGHAM & WOMENS HOSP,SCH MED,DEPT PATHOL,DIV VASC RES,BOSTON,MA 02115. RP HECHT, JT (reprint author), UNIV TEXAS,SCH MED,DEPT PEDIAT,POB 20708,HOUSTON,TX 77225, USA. FU NCI NIH HHS [CA16672]; NHLBI NIH HHS [HL49081] NR 37 TC 252 Z9 256 U1 0 U2 0 PU NATURE PUBLISHING CO PI NEW YORK PA 345 PARK AVE SOUTH, NEW YORK, NY 10010-1707 SN 1061-4036 J9 NAT GENET JI Nature Genet. PD JUL PY 1995 VL 10 IS 3 BP 325 EP 329 DI 10.1038/ng0795-325 PG 5 WC Genetics & Heredity SC Genetics & Heredity GA RG386 UT WOS:A1995RG38600017 PM 7670471 ER PT J AU BRIGGS, MD HOFFMAN, SMG KING, LM OLSEN, AS MOHRENWEISER, H LEROY, JG MORTIER, GR RIMOIN, DL LACHMAN, RS GAINES, ES CEKLENIAK, JA KNOWLTON, RG COHN, DH AF BRIGGS, MD HOFFMAN, SMG KING, LM OLSEN, AS MOHRENWEISER, H LEROY, JG MORTIER, GR RIMOIN, DL LACHMAN, RS GAINES, ES CEKLENIAK, JA KNOWLTON, RG COHN, DH TI PSEUDOACHONDROPLASIA AND MULTIPLE EPIPHYSEAL DYSPLASIA DUE TO MUTATIONS IN THE CARTILAGE OLIGOMERIC MATRIX PROTEIN GENE SO NATURE GENETICS LA English DT Article ID V COLLAGEN; THROMBOSPONDIN; BINDING; HEPARIN; SITES AB Pseudoachondroplasia (PSACH) and multiple epiphyseal dysplasia (MED) are dominantly inherited chondrodysplasias characterized by short stature and early-onset osteoarthrosis. The disease genes in families with PSACH and MED have been localized to an 800 kilobase interval on the short arm of chromosome 19. Recently the gene for cartilage oligomeric matrix protein (COMP) was localized to chromosome 19p13.1. In three patients with these diseases, we identified COMP mutations in a region of the gene that encodes a CA(++) binding motif. Our data demonstrate that PSACH and some forms of MED are allelic and suggest an essential role for Ca++ binding in COMP structure and function. C1 CEDARS SINAI RES INST,STEVEN SPIELBERG PEDIAT RES CTR,AHMANSON DEPT PEDIAT,LOS ANGELES,CA 90048. UNIV CALIF LOS ANGELES,SCH MED,DEPT PEDIAT,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,SCH MED,DEPT RADIOL,LOS ANGELES,CA 90024. LAWRENCE LIVERMORE NATL LAB,CTR HUMAN GENOME,BIOL & BIOTECHNOL RES PROGRAM,LIVERMORE,CA 94550. STATE UNIV GHENT,SCH MED,DEPT PEDIAT,B-9000 GHENT,BELGIUM. STATE UNIV GHENT,SCH MED,DEPT MED GENET,B-9000 GHENT,BELGIUM. THOMAS JEFFERSON UNIV,JEFFERSON MED COLL,DEPT BIOCHEM & MOLEC BIOL,PHILADELPHIA,PA 19107. RI Mortier, Geert/D-2542-2012 FU NIAMS NIH HHS [AR39740, AR43139]; NICHD NIH HHS [HD22657] NR 37 TC 326 Z9 341 U1 0 U2 5 PU NATURE PUBLISHING CO PI NEW YORK PA 345 PARK AVE SOUTH, NEW YORK, NY 10010-1707 SN 1061-4036 J9 NAT GENET JI Nature Genet. PD JUL PY 1995 VL 10 IS 3 BP 330 EP 336 DI 10.1038/ng0795-330 PG 7 WC Genetics & Heredity SC Genetics & Heredity GA RG386 UT WOS:A1995RG38600018 PM 7670472 ER PT J AU PENNELL, WE CORWIN, WR AF PENNELL, WE CORWIN, WR TI REACTOR PRESSURE-VESSEL STRUCTURAL INTEGRITY RESEARCH SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article ID TOUGHNESS AB Development continues on the technology used to assess the safety of irradiation embrittled nuclear reactor pressure vessels (RPVs) containing flaws. Fracture mechanics tests on RPV steel, coupled with detailed elastic-plastic finite element analyses of the crack-tip stress fields, have shown that (1) constraint relaxation at the crack-tip of shallow surface flaws results in increased data scatter but no increase in the lower-bound fracture toughness, (2) the nil-ductility temperature (NDT) performs better than the reference temperature for nil-ductility transition (RT(NDT)) as a normalizing parameter for shallow flaw fracture toughness data, (3) biaxial loading can reduce the shallow flaw fracture toughness, (4) stress based dual-parameter fracture toughness correlations cannot predict the effect of biaxial loading on shallow flaw fracture toughness because in-plane stresses at the crack-tip are not influenced by biaxial loading, and (5) an implicit strain based dual-parameter fracture toughness correlation can predict the effect of biaxial loading on shallow flaw fracture toughness. Experimental irradiation investigations have shown that (1) the irradiation induced shift in Charpy V-notch vs. temperature behavior may not be adequate to conservatively assess fracture toughness shifts due to embrittlement, and (2) the wide global variations of initial chemistry and fracture properties of a nominally uniform material within a pressure vessel may confound accurate integrity assessments that require baseline properties. RP PENNELL, WE (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 26 TC 6 Z9 7 U1 0 U2 3 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD JUL PY 1995 VL 157 IS 1-2 BP 159 EP 175 DI 10.1016/0029-5493(95)00987-N PG 17 WC Nuclear Science & Technology SC Nuclear Science & Technology GA RL226 UT WOS:A1995RL22600013 ER PT J AU DOCTOR, SR LEMAITRE, P CRUTZEN, S AF DOCTOR, SR LEMAITRE, P CRUTZEN, S TI AUSTENITIC STEEL PIPING TESTING EXERCISES IN PISC SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article AB In this paper capability and reliability studies of NDT procedures for the inspection of wrought and cast stainless steel piping used in nuclear power plants will be presented. The capability study was designed to identify procedures that have the potential to detect and size defects and to discriminate between flawed and unflawed material. The reliability study was undertaken to quantify on real and realistic flaws in-service inspection performance (detection and false call capability) under realistic field conditions. Furthermore parametric studes were performed to complement the capability and reliability studies by evaluating the effect of important material and flaw variables. The specimens used in these studies were cast-to-cast, cast-to-wrought, and wrought-to-wrought pipework welds. The evaluation methods used to quantify the inspection performance were selected to be as comparable as possible to the PISC II methods. These were adapted to allow also the evaluation of the effect of false calls. During the PISC II screening exercise for the cast-to-cast stainless steel round robin test and other piping round robin studies, it was indeed found that false call probabilities were large and could not be ignored in the evaluation of the inspection performance. The matrix of samples has also been designed to allow the implementation of specific statistical analysis procedures for the evaluation of results such as for example the relative operative characteristics analysis. C1 COMMISS EUROPEAN COMMUNITIES, JOINT RES CTR, INST ADV MAT, 1755 ZG PETTEN, NETHERLANDS. PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 10 TC 3 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD JUL PY 1995 VL 157 IS 1-2 BP 231 EP 244 DI 10.1016/0029-5493(95)00991-K PG 14 WC Nuclear Science & Technology SC Nuclear Science & Technology GA RL226 UT WOS:A1995RL22600018 ER PT J AU HOOPER, EB AF HOOPER, EB TI OPTIMIZATION OF NEUTRAL BEAM INJECTION IN THE BEAM-PLASMA NEUTRON SOURCE SO NUCLEAR FUSION LA English DT Letter AB The power efficiency of neutron production in the Beam Plasma Neutron Source (BPNS), proposed its a volumetric 14 MeV neutron source, is maximized at an energy of 110-120 keV for positive ion based (deuteron) neutral beams. Deuterons injected into a triton plasma and tritons into a deuteron plasma are shown to give equal results at the same injection energy per nucleon. For deuterons, this is the energy used in long pulse neutral beams on TFTR; thus, the required DC beams could be developed from the existing systems. RP HOOPER, EB (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5 PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD JUL PY 1995 VL 35 IS 7 BP 876 EP 880 DI 10.1088/0029-5515/35/7/I11 PG 5 WC Physics, Fluids & Plasmas SC Physics GA RM762 UT WOS:A1995RM76200011 ER PT J AU LI, H YU, SS AF LI, H YU, SS TI THEORY OF INDUCTIVELY DETUNED TRAVELING-WAVE STRUCTURES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB As high power rf extraction cavities, traveling wave structures (TWS) have demonstrated significant advantages due to their inherent low field gradients. For applications involving long, multi-cavity devices such as a relativistic klystrons two-beam accelerator (RK-TBA), the extraction cavities must be inductively detuned to maintain longitudinal beam stability. In this paper, the theory of inductively detuned traveling wave cavities is developed within the framework of a coupled-cavity circuit description of TWS. We determine the output cell parameters (eigenfrequency omega(0) and quality factor Q) required for proper matching to avoid unwanted reflections. We then derive the power balance equation which quantifies the generation and the transmission of electromagnetic energy in each cell of the TWS. An analytic formula for predicting the power output from a TWS is obtained. Finally, using the analytic results derived we check the applicability of the computer code RKS for inductively detuned TWSs. RP LI, H (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUL 1 PY 1995 VL 361 IS 1-2 BP 21 EP 26 DI 10.1016/0168-9002(95)00135-2 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RH169 UT WOS:A1995RH16900003 ER PT J AU NOREM, J DAWSON, J HABERICHTER, W LAM, R REED, L YANG, XF SPENCER, J AF NOREM, J DAWSON, J HABERICHTER, W LAM, R REED, L YANG, XF SPENCER, J TI BEAM PROFILE MEASUREMENTS USING NONIMAGING GAMMA-OPTICS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID E+E LINEAR COLLIDERS; SIZE MONITOR AB High energy photons produced from bremsstrahlung foils, Compton scattering or beamstrahlung from high energy e(+)e(-) collisions can be used to measure beam profiles using nonimaging optics. We describe the method and its limitations (resolution, backgrounds etc.), as well as the apparatus required to implement it. Data from a low energy test run is described as well as other possible applications, such as a 250+250 GeV linear collider and possible experiments with existing beams. C1 STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP NOREM, J (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUL 1 PY 1995 VL 361 IS 1-2 BP 27 EP 36 DI 10.1016/0168-9002(95)00136-0 PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RH169 UT WOS:A1995RH16900004 ER PT J AU PLADALMAU, A FOSTER, GW ZHANG, G AF PLADALMAU, A FOSTER, GW ZHANG, G TI COUMARINS AS WAVELENGTH SHIFTERS IN POLYSTYRENE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB A series of commercially available coumarins was tested as wavelength shifters in polystyrene for a tile/fiber calorimeter application. The objective was to find a compound that when incorporated in a polystyrene matrix absorbed in the 400-450 nm wavelength range, fluoresced in the green region of the visible spectrum (lambda(cm) = 450-550 nm), and exhibited both short decay time and high quantum yield. Transmittance, fluorescence, and decay time determinations were performed in order to characterize each coumarin in polystyrene. Two coumarins (C510 and C515) were found to have faster decay times (similar to 8 ns vs. 12 ns) and superior light output (100-120%) compared to the commonly-used green wavelength shifter, K-27. RP PLADALMAU, A (reprint author), FERMILAB NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 5 TC 3 Z9 3 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUL 1 PY 1995 VL 361 IS 1-2 BP 192 EP 196 DI 10.1016/0168-9002(95)00174-3 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RH169 UT WOS:A1995RH16900022 ER PT J AU BUTLERMOORE, K ARYAEINEJAD, R COLE, JD DARDENNE, Y GREENWOOD, RC WINSTON, HM AF BUTLERMOORE, K ARYAEINEJAD, R COLE, JD DARDENNE, Y GREENWOOD, RC WINSTON, HM TI APPLICATION OF X-RAYS IN PROMPT SPECTROSCOPY OF CF-252 FISSION FRAGMENTS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID NEUTRON; DEFORMATION; ISOTOPES; REGION AB In this paper we illustrate that LEPS X-ray detectors operating in coincidence with gamma-ray detectors yield additional data that are useful in prompt gamma-ray spectroscopic studies of spontaneous fission fragments. Several X-X and X-gamma gated spectra are presented as illustrations of spectroscopic techniques, and in support of new transitions in the level scheme of Ce-147. C1 IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. NR 8 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUL 1 PY 1995 VL 361 IS 1-2 BP 245 EP 252 DI 10.1016/0168-9002(95)00072-0 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RH169 UT WOS:A1995RH16900029 ER PT J AU KOEHLER, PE HARVEY, JA HILL, NW AF KOEHLER, PE HARVEY, JA HILL, NW TI 2 DETECTORS FOR (N,P) AND (N,ALPHA) MEASUREMENTS AT WHITE NEUTRON SOURCES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID CROSS-SECTION AB We have developed two detectors for (n,p) and (n,alpha) cross section measurements at white neutron sources which make possible large increases in the sample size and geometric efficiency while at the same time reducing the potentially large background associated with the ''gamma flash'' to manageable levels. We present measurements of two (n,alpha) cross sections made with these detectors to energies as high as a few MeV. C1 LOS ALAMOS NATL LAB,P17 GRP,LOS ALAMOS,NM 87545. OI Koehler, Paul/0000-0002-6717-0771 NR 18 TC 15 Z9 15 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUL 1 PY 1995 VL 361 IS 1-2 BP 270 EP 276 DI 10.1016/0168-9002(95)00123-9 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RH169 UT WOS:A1995RH16900033 ER PT J AU WOLANSKI, M FREEDMAN, SJ DAWSON, JW HABERICHTER, WN CHAN, KC CHISHTI, AA KALOSKAMIS, NI LISTER, CJ AF WOLANSKI, M FREEDMAN, SJ DAWSON, JW HABERICHTER, WN CHAN, KC CHISHTI, AA KALOSKAMIS, NI LISTER, CJ TI TRIGGER PROCESSOR FOR THE APEX POSITRON-ELECTRON SPECTROMETER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID HEAVY-ION COLLISIONS; SCATTERING; EXPERIENCE; DETECTOR; INJECTOR; SYSTEMS; ATLAS AB The APEX experiment is designed to study anomalous positron-electron pair production in heavy-ion collisions. Its trigger processor is designed to give a fast, first-level trigger which initiates data readout for interesting events. This is achieved by identifying the back-to-back 511 keV annihilation radiation from positron decay. The radiation is detected in a segmented NaI(TI) calorimeter and the trigger processor identifies those patterns of hit detectors which are consistent with back-to-back decay. A fast pattern recognition algorithm gives triggering pulses within the 82.5 ns accelerator beam pulse period. Valid hit patterns are software-coded into memory and can be easily changed. A novel two-level discriminator, constructed from standard IC devices, provides self-vetoing to reduce background associated with cosmic ray muons. C1 UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637. ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439. YALE UNIV,AW WRIGHT NUCL STRUCT LAB,NEW HAVEN,CT 06520. RP WOLANSKI, M (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. NR 27 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUL 1 PY 1995 VL 361 IS 1-2 BP 326 EP 337 DI 10.1016/0168-9002(95)00139-5 PG 12 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RH169 UT WOS:A1995RH16900039 ER PT J AU ALTIKRITI, MS ZEAPONCE, Y BALDWIN, RM ZOGHBI, SS LARUELLE, M SEIBYL, JP GIDDINGS, SS SCANLEY, BE CHARNEY, DS HOFFER, PB SPARKS, R STUBBS, J WANG, SY NEUMEYER, JL INNIS, RB AF ALTIKRITI, MS ZEAPONCE, Y BALDWIN, RM ZOGHBI, SS LARUELLE, M SEIBYL, JP GIDDINGS, SS SCANLEY, BE CHARNEY, DS HOFFER, PB SPARKS, R STUBBS, J WANG, SY NEUMEYER, JL INNIS, RB TI CHARACTERIZATION OF THE DOPAMINE TRANSPORTER IN NONHUMAN PRIMATE BRAIN - HOMOGENATE BINDING, WHOLE-BODY IMAGING, AND EX-VIVO AUTORADIOGRAPHY USING [I-125]IPCIT AND [I-123]IPCIT SO NUCLEAR MEDICINE AND BIOLOGY LA English DT Article ID NOREPINEPHRINE UPTAKE SITES; MONOAMINE REUPTAKE SITES; SEROTONIN TRANSPORTERS; BETA-CIT; RAT-BRAIN; EMISSION TOMOGRAPHY; COCAINE ANALOGS; LIGAND-BINDING; 2-BETA-CARBOMETHOXY-3-BETA-(4-IODOPHENYL)TROPANE; BIODISTRIBUTION AB IPCIT [2 beta-carboisopropoxy-3 beta-(4-iodophenyl)tropane; also designated RTI-121] is the isopropyl ester of beta-CIT [2 beta-carbomethoxy-3 beta-(4-iodophenyl) tropane]. Although beta-CIT binds to dopamine (DA), serotonin (5-HT) and norepinephrine (NE) transporters, IPCIT has been reported to be selective for the DA transporter. IPCIT was labeled with I-125 and its receptor binding to membranes prepared from baboon striatum was compared with that of [I-125]beta-CIT. These studies confirmed the relative selectivity of IPCIT for the DA transporter in comparison to 5-HT and NE transporters. The nonspecific binding of [I-125]IPCIT was almost four times greater than that of [I-125]beta-CIT. The biodistribution of IPCIT was examined in two baboons with whole body imaging for 24-30 h after administration of 3 mCi of I-123-labeled tracer. The brain uptake peaked within the first hour at 9.2% of the injected dose and the majority of activity in the body cleared through the hepatobiliary system. The distribution of activity within the brain was examined with ex vivo autoradiography in one monkey injected with [I-123]IPCIT. Activity was concentrated in the caudate and putamen and had values of 5 and 7 mu Ci/cm(3) per mu Ci/g, respectively. The distribution in brain regions receiving moderately dense serotonergic innervation (e.g. superior colliculus acid thalamus) had levels of activity equivalent to that in cerebellum. This study confirmed the in vitro and in vivo selectivity of IPCIT for the DA transporter but also showed that [I-125]IPCIT had higher in vitro nonspecific binding than [I-125]beta-CIT. C1 VET ADM MED CTR,W HAVEN,CT 06516. OAK RIDGE INST SCI & EDUC,OAK RIDGE,TN 37831. RES BIOCHEM INT,NATICK,MA 01760. RP ALTIKRITI, MS (reprint author), YALE UNIV,DEPT PSYCHIAT & DIAGNOST RADIOL,W HAVEN,CT 06516, USA. FU NIMH NIH HHS [MH25642] NR 40 TC 6 Z9 6 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0883-2897 J9 NUCL MED BIOL JI Nucl. Med. Biol. PD JUL PY 1995 VL 22 IS 5 BP 649 EP 658 DI 10.1016/0969-8051(94)00140-F PG 10 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA RL991 UT WOS:A1995RL99100015 PM 7581176 ER PT J AU BALDWIN, RM HORTI, AG BREMNER, JD STRATTON, MD DANNALS, RF RAVERT, HT ZEAPONCE, Y NG, CK DEY, HM SOUFER, R CHARNEY, DS MAZZA, SM SPARKS, RB STUBBS, JB INNIS, RB AF BALDWIN, RM HORTI, AG BREMNER, JD STRATTON, MD DANNALS, RF RAVERT, HT ZEAPONCE, Y NG, CK DEY, HM SOUFER, R CHARNEY, DS MAZZA, SM SPARKS, RB STUBBS, JB INNIS, RB TI SYNTHESIS AND PET IMAGING OF THE BENZODIAZEPINE RECEPTOR TRACER [N-METHYL-C-11]IOMAZENIL SO NUCLEAR MEDICINE AND BIOLOGY LA English DT Article ID POSITRON EMISSION TOMOGRAPHY; C-11 FLUMAZENIL; I-123 IOMAZENIL; HUMAN BRAIN AB The central benzodiazepine receptor tracer [N-methyl-C-11]iomazenil (Ro 16-0154) was synthesized by alkylation of the desmethyl precursor noriomazenil with [C-11]methyl iodide. The [C-11]CH3I (prepared by reduction of [C-11]CO2 with LiAlH4 followed by reaction with HI) was reacted with noriomazenil in N,N-dimethylformamide and Bu(4)N(+)OH(-) for 1 min at 80 degrees C and purified by HPLC (C-18, 34% CH3CN/H2O, 7 mL/min). The product was obtained with synthesis time 35 +/- 5 min (mean +/- SD, n = 7), radiochemical yield (EOB) 36 +/- 16%, radiochemical purity 99 +/- 1%, and specific activity 5100 +/- 2800 mCi/mu mol. Absorbed radiation doses were calculated from previously acquired human biodistribution data. The urinary bladder wall received the highest dose (0.099 mGy/MBq) for 4.8 h voiding interval and the effective dose equivalent was 0.015 mSv/MBq. After i.v. injection of [C-11]iomazenil in an adult baboon or healthy human volunteer, radioactivity accumulated in the cortex with time-activity curves in agreement with results obtained with [C-11]flumazenil PET and [I-123]iomazenil SPECT studies. The count rate was sufficient to obtain quantitative images up to 2 h post-injection with a 14 mCi injection. These results suggest that [C-11]iomazenil will be a useful agent for measuring benzodiazepine receptors in vivo by positron emission tomography. C1 YALE UNIV,SCH MED,DEPT DIAGNOST RADIOL,W HAVEN,CT 06516. VET AFFAIRS MED CTR,YALE VA POSITRON EMISS TOMOG CTR,W HAVEN,CT. JOHNS HOPKINS MED INST,DIV NUCL MED,BALTIMORE,MD 21205. JOHNS HOPKINS MED INST,DIV RADIAT HLTH SCI,BALTIMORE,MD 21205. OAK RIDGE INST SCI & EDUC,CTR RADIAT INTERNAL DOSE INFORMAT,OAK RIDGE,TN. RP BALDWIN, RM (reprint author), YALE UNIV,SCH MED,DEPT PSYCHIAT,W HAVEN,CT 06516, USA. RI Bremner, James/B-1632-2013 FU NIMH NIH HHS [R01 MH 404140] NR 30 TC 12 Z9 12 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0883-2897 J9 NUCL MED BIOL JI Nucl. Med. Biol. PD JUL PY 1995 VL 22 IS 5 BP 659 EP 665 DI 10.1016/0969-8051(94)00139-B PG 7 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA RL991 UT WOS:A1995RL99100016 PM 7581177 ER PT J AU Bari, RA AF Bari, RA TI Second ANS Workshop on the Safety of Soviet-Designed Nuclear Power Plants SO NUCLEAR SAFETY LA English DT Article AB The Second American Nuclear Society Workshop on the Safety of Soviet-Designed Nuclear Power Plants was held in Washington, D.C., in November 1994. The workshop consisted of both plenary sessions and working sessions with 300 participants overall. All countries with operating Soviet-designed nuclear power plants were represented, and representatives from several other countries also participated. In addition to the status and plans related to technical issues, the workshop also included discussions of economic, political, legal, and social issues as they relate to the safety of these nuclear power plants. RP Bari, RA (reprint author), BROOKHAVEN NATL LAB,DEPT ADV TECHNOL,UPTON,NY 11973, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0029-5604 J9 NUCL SAFETY JI Nucl. Saf. PD JUL-DEC PY 1995 VL 36 IS 2 BP 218 EP 234 PG 17 WC Environmental Sciences; Nuclear Science & Technology SC Environmental Sciences & Ecology; Nuclear Science & Technology GA UN300 UT WOS:A1995UN30000002 ER PT J AU Hopper, CM AF Hopper, CM TI Elements of a nuclear criticality safety program SO NUCLEAR SAFETY LA English DT Article AB Nuclear criticality safety programs throughout the United Stares are quite successful, as compared with other safety disciplines, at protecting life and property, especially when regarded as a developing safety function with no historical perspective for the cause and effect of process nuclear criticality accidents before 1943. The programs evolved through self-imposed and regulatory-imposed incentives. They are the products of conscientious individuals, supportive corporations, obliged regulators, and intervenors (political, public, and private). The maturing of nuclear criticality safety programs throughout the United States has been spasmodic, with stability provided by the volunteer standards efforts within the American Nuclear Society. This presentation provides the status, relative to current needs, for nuclear criticality safety program elements that address organization of and assignments for nuclear criticality safety program responsibilities. personnel qualifications; and analytical capabilities for the technical definition of critical, subcritical, safety and operating limits, and program quality assurance. RP Hopper, CM (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0029-5604 J9 NUCL SAFETY JI Nucl. Saf. PD JUL-DEC PY 1995 VL 36 IS 2 BP 234 EP 242 PG 9 WC Environmental Sciences; Nuclear Science & Technology SC Environmental Sciences & Ecology; Nuclear Science & Technology GA UN300 UT WOS:A1995UN30000003 ER PT J AU Boyack, BE Steiner, JL Harmony, SC Stumpf, HJ Lime, JF AF Boyack, BE Steiner, JL Harmony, SC Stumpf, HJ Lime, JF TI Transient analysis of the PIUS advanced reactor design with the TRAC-PF1/MOD2 Code SO NUCLEAR SAFETY LA English DT Article AB The PIUS Advanced Reactor is a 640-MW(e) pressurized-water reactor developed by Asea Brown Boveri. A unique feature of the PIUS concept is the absence of mechanical control and shutdown rods. Reactivity normally is controlled by the boron concentration in the coolant and the temperature of the moderator coolant. Analyses of five initiating events have been completed on the basis of calculations per formed with the system neutronic and thermal-hydraulic analysis code TRAC-PF1/MOD2. The initiating events analyzed are (1) reactor scram, (2) loss of off-site power (3) main steam-line break, (4) small-break loss of coolant, and (5) large-break loss of coolant. In addition to the baseline calculation for each sequence, sensitivity studies were performed to explore the response of the PIUS reactor to severe off-normal conditions having a very low probability of occurrence. The sensitivity studies provide insights into the robustness of the design. RP Boyack, BE (reprint author), LOS ALAMOS NATL LAB,DIV TECHNOL & SAFETY ASSESSMENT,SOFTWARE DEV TEAM,POB 1663,LOS ALAMOS,NM 87545, USA. NR 15 TC 3 Z9 3 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0029-5604 J9 NUCL SAFETY JI Nucl. Saf. PD JUL-DEC PY 1995 VL 36 IS 2 BP 249 EP 277 PG 29 WC Environmental Sciences; Nuclear Science & Technology SC Environmental Sciences & Ecology; Nuclear Science & Technology GA UN300 UT WOS:A1995UN30000005 ER PT J AU Heames, TJ KhatibRahbar, M Kelly, JE JenksJohnson, RP Chen, YS AF Heames, TJ KhatibRahbar, M Kelly, JE JenksJohnson, RP Chen, YS TI The hierarchy-by-interval approach to identifying important models that need improvement in severe-accident simulation codes SO NUCLEAR SAFETY LA English DT Article AB The hierarchy-by-interval (HBI) methodology was developed to determine an appropriate phenomena identification and ranking table for an independent peer review of severe-accident computer codes. The methodology is described, and the results of a specific code review are presented. Use of this systematic and structured approach ensures that important code models that need improvement are identified and prioritized, which allows code sponsors to more effectively direct limited resources in future code development. In addition, critical phenomenological areas that need more fundamental work, such as experimentation, are identified. C1 ENERGY RES INC,ROCKVILLE,MD 20847. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. LOS ALAMOS NATL LAB,DIV TECHNOL & SAFETY ASSESSMENT,LOS ALAMOS,NM 87545. US NUCL REGULATORY COMMISS,OFF NUCL REGULATORY RES,DIV SYST TECHNOL,ACCIDENT EVALUAT BRANCH,WASHINGTON,DC 20555. RP Heames, TJ (reprint author), INNOVAT TECHNOL SOLUT CORP,8015 MT RD PL NE,ALBUQUERQUE,NM 87110, USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0029-5604 J9 NUCL SAFETY JI Nucl. Saf. PD JUL-DEC PY 1995 VL 36 IS 2 BP 278 EP 289 PG 12 WC Environmental Sciences; Nuclear Science & Technology SC Environmental Sciences & Ecology; Nuclear Science & Technology GA UN300 UT WOS:A1995UN30000006 ER PT J AU Sun, JG Chien, TH Ding, J Sha, WT AF Sun, JG Chien, TH Ding, J Sha, WT TI Validation of COMMIX with Westinghouse AP-600 PCCS test data SO NUCLEAR SAFETY LA English DT Article AB Small-scale test data for the Westinghouse AP-600 Passive Containment Cooling System (PCCS) have been used to validate the COMMIX computer code. So that the performance of the PCCS can be evaluated, two transient liquid-film tracking models have been developed and implemented in the COMMIX code. A set of heat-transfer models and a mass transfer model based on heat and mass transfer analogy were used for the analysis of the AP-600 PCCS. The flow of the air stream in the annulus is a highly turbulent forced convection and the flow of the air-steam mixture in the containment vessel is a mixed convection. Accordingly, a turbulent-forced-convection heat-transfer model is used on the outside of the steel containment vessel wall and a mixed-convection heat-transfer model is used on the inside of the steel containment vessel wall. The results from the COMMIX calculations are compared with the experimental data from Westinghouse PCCS small-scale tests for average wall heat flux, evaporation rate, containment vessel pressure, and vessel wall temperature and heat flux distributions; agreement is good. The COMMIX calculations also provide derailed distributions of velocity, temperature, and steam and air concentrations. C1 ENERGY RES CORP,DANBURY,CT. RP Sun, JG (reprint author), ARGONNE NATL LAB,DIV ENERGY TECHNOL,MULTIPHASE FLOW RES INST,ET-308,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 10 TC 6 Z9 6 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0029-5604 J9 NUCL SAFETY JI Nucl. Saf. PD JUL-DEC PY 1995 VL 36 IS 2 BP 310 EP 320 PG 11 WC Environmental Sciences; Nuclear Science & Technology SC Environmental Sciences & Ecology; Nuclear Science & Technology GA UN300 UT WOS:A1995UN30000009 ER PT J AU Kahook, SD Garrett, RL Canas, LR Beckum, MJ AF Kahook, SD Garrett, RL Canas, LR Beckum, MJ TI Spent nuclear fuel characterization for a bounding reference assembly for the receiving basin for off-site fuel SO NUCLEAR SAFETY LA English DT Article AB The Basis for Interim Operation (BIO) for the Receiving Basin for Off-Site Fuel (RBOF) facility at the Department of Energy (DOE) Savannah River Site (SRS) nuclear materials production complex, developed in accordance with draft DOE-STD-0019-93, required a hazard categorization for the safety analysis section as outlined in DOE-STD-1027-92. The RBOF facility was thus established as a Category-2 facility (having potential for significant onsite consequences from a radiological release) as defined in DOE 5480.23. Given the wide diversity of spent nuclear fuel stored in the RBOF facility, which made a detailed assessment of the total nuclear inventory virtually impossible, the categorization required a conservative calculation based on the concept of a hypothetical, bounding reference fuel assembly integrated over the total capacity of the facility. This scheme not only was simple but also precluded a potential delay in the completion of the BIO. RP Kahook, SD (reprint author), WESTINGHOUSE SAVANNAH RIVER CO,DEPT ENERGY,SAVANNAH RIVER SITE,AIKEN,SC 29808, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0029-5604 J9 NUCL SAFETY JI Nucl. Saf. PD JUL-DEC PY 1995 VL 36 IS 2 BP 321 EP 331 PG 11 WC Environmental Sciences; Nuclear Science & Technology SC Environmental Sciences & Ecology; Nuclear Science & Technology GA UN300 UT WOS:A1995UN30000010 ER PT J AU Cletcher, JW AF Cletcher, JW TI Reactor shutdown experience SO NUCLEAR SAFETY LA English DT Article RP Cletcher, JW (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU US GOVERNMENT PRINTING OFFICE PI WASHINGTON PA SUPT OF DOCUMENTS, WASHINGTON, DC 20402-9325 SN 0029-5604 J9 NUCL SAFETY JI Nucl. Saf. PD JUL-DEC PY 1995 VL 36 IS 2 BP 332 EP 334 PG 3 WC Environmental Sciences; Nuclear Science & Technology SC Environmental Sciences & Ecology; Nuclear Science & Technology GA UN300 UT WOS:A1995UN30000011 ER PT J AU MOREL, JE MCGHEE, JM AF MOREL, JE MCGHEE, JM TI A DIFFUSION-SYNTHETIC ACCELERATION TECHNIQUE FOR THE EVEN-PARITY S-N EQUATIONS WITH ANISOTROPIC SCATTERING SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID DISCRETE-ORDINATES EQUATIONS; GEOMETRY AB A source iteration scheme and associated diffusion-synthetic acceleration scheme are defined for the even-parity S-n equations with anisotropic scattering. The spatially analytic versions of these schemes are shown to be completely equivalent to their counterparts for the first-order form of the equations. Thus, in the limit as the spatial mesh is refined, each even-parity iteration scheme must asymptotically converge at the same rate as its first-order counterpart. The equivalence of the even-parity and first-order source iteration processes implies that any synthetic acceleration scheme for the first-order S-n equations has an even-parity counterpart that is equivalent for the spatially analytic case. Theoretical and computational results are given that demonstrate the properties of the even-parity source iteration and diffusion-synthetic acceleration schemes. RP LOS ALAMOS NATL LAB, POB 1663, LOS ALAMOS, NM 87545 USA. NR 15 TC 7 Z9 7 U1 0 U2 0 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 EI 1943-748X J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JUL PY 1995 VL 120 IS 3 BP 147 EP 164 PG 18 WC Nuclear Science & Technology SC Nuclear Science & Technology GA RJ531 UT WOS:A1995RJ53100001 ER PT J AU LIN, J BARTAL, Y UHRIG, RE AF LIN, J BARTAL, Y UHRIG, RE TI PREDICTING THE SEVERITY OF NUCLEAR-POWER-PLANT TRANSIENTS USING NEAREST NEIGHBORS MODELING OPTIMIZED BY GENETIC ALGORITHMS ON A PARALLEL COMPUTER SO NUCLEAR TECHNOLOGY LA English DT Article DE REACTORS; TRANSIENTS; PREDICTION ID NEURAL NETWORK; IDENTIFICATION AB The importance of automatic diagnostic systems for nuclear power plants (NPPs) has been discussed in numerous studies, and various such systems have been proposed. None of those systems were designed to predict the severity of the diagnosed scenario. A classification and severity prediction system for NPP transients is developed. The system is based on nearest neighbors modeling, which is optimized using genetic algorithms. The optimization process is used to determine the most important variables for each of the transient types analyzed. An enhanced version of the genetic algorithms is used in which a local downhill search is performed to further increase the accuracy achieved. The genetic algorithms search was implemented on a massively parallel supercomputer, the KSR1-64, to perform the analysis in a reasonable time. The data for this study were supplied by the high-fidelity simulator of the San Onofre unit I pressurized water reactor. C1 OAK RIDGE NATL LAB,DIV INSTRUMENTAT & CONTROLS,OAK RIDGE,TN 37831. NR 22 TC 8 Z9 8 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD JUL PY 1995 VL 111 IS 1 BP 46 EP 62 PG 17 WC Nuclear Science & Technology SC Nuclear Science & Technology GA RM386 UT WOS:A1995RM38600004 ER PT J AU BEARD, CA BUKSA, JJ CAPPIELLO, MW DAVIDSON, JW ELSON, JS IRELAND, JR KRAKOWSKI, RA KROHN, BJ SAILOR, WC SAPIR, JL AF BEARD, CA BUKSA, JJ CAPPIELLO, MW DAVIDSON, JW ELSON, JS IRELAND, JR KRAKOWSKI, RA KROHN, BJ SAILOR, WC SAPIR, JL TI NEUTRONICS AND ENGINEERING DESIGN OF THE AQUEOUS-SLURRY ACCELERATOR TRANSMUTATION OF WASTE BLANKET SO NUCLEAR TECHNOLOGY LA English DT Article DE RADIOACTIVE WASTE; TRANSMUTATION; ACCELERATORS AB A conceptual tal get and blanket design for an accelerator transmutation of waste system capable of transmuting the high-level waste stream from 2.5 light water reactors is described. Typically, four such target-blanket designs would be served by a single linear accelerator. The target consists of rows of solid tungsten rod bundles, cooled by heavy water and surrounded by a lead annulus. The annular blanket, which surrounds the target, consists of a set of actinide-oxide-slurry-bearing tubes, each 3 m long, surrounded by heavy water moderator. Heat is removed from the slurry tubes by passing the slurry through an external heat exchanger. Long-lived fission products are burned in regions that are separate from the actinides. Using the Monte Carlo codes LAHET and MCNP, a conceptual design for a beam current of 62.5 mA/target of 1.6-GeV protons has been developed. Preliminary engineering analyses on key system components have been performed. A preliminary layout of the concept and the associated primary-heat transport subsystems was developed, demonstrating a multiple-containment-boundary design philosophy. RP BEARD, CA (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD JUL PY 1995 VL 111 IS 1 BP 122 EP 132 PG 11 WC Nuclear Science & Technology SC Nuclear Science & Technology GA RM386 UT WOS:A1995RM38600012 ER PT J AU TAKAHASHI, H AF TAKAHASHI, H TI TRANSMUTATION OF HIGH-LEVEL RADIOACTIVE-WASTE BY A CHARGED-PARTICLE ACCELERATOR SO NUCLEAR TECHNOLOGY LA English DT Article DE TRANSMUTATION; ACCELERATOR; SUBCRITICAL REACTOR AB Transmutation of minor actinides and long-lived fission products using a proton accelerator has many advantages over a transmutor operated in a critical condition. The energy required for this transmutation can be reduced by multiplying the spallation neutrons in a subcritical assembly surrounding the spallation target. Study was done on the relation between the energy requirements and the multiplication factor k of the subcritical assembly, while varying the range of several parameters in the spallation target. A slightly subcritical reactor is superior to a reactor with large subcriticality in the context of the energy requirement of a small proton accelerator, the extent of radiation damage, and other safety problems. To transmute the long-lived fission products without consuming much fissile material, the transmutor reactor must have a good neutron economy, which can be obtained by using a transmutor operated by a proton accelerator. Consideration is given to the use of minor actinides to improve neutronic characteristics, such as achieving a long fuel burnup rather than simply transmuting this valuable material. RP TAKAHASHI, H (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 37 TC 3 Z9 3 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD JUL PY 1995 VL 111 IS 1 BP 149 EP 162 PG 14 WC Nuclear Science & Technology SC Nuclear Science & Technology GA RM386 UT WOS:A1995RM38600014 ER PT J AU RADER, RB MCARTHUR, JV AF RADER, RB MCARTHUR, JV TI THE RELATIVE IMPORTANCE OF REFUGIA IN DETERMINING THE DRIFT AND HABITAT SELECTION OF PREDACEOUS STONEFLIES IN A SANDY-BOTTOMED STREAM SO OECOLOGIA LA English DT Article DE STONEFLY DISPERSION; DRIFT AND HABITAT SELECTION; REFUGIA; AGGRESSIVE INTERFERENCE; HUNGER ID PREDATOR-PREY INTERACTIONS; SUBSTRATE COMPOSITION; INVERTEBRATE DRIFT; PLECOPTERA; COMMUNITY; TERRITORIALITY; INTERFERENCE; COMPETITION; BEHAVIOR; DENSITY AB Patch structure in sandy, compared to rocky streams, is characterized by isolated snags that can only be colonized by drifting. By measuring drift from patches (snags) of various quality we determined the factors that influence habitat selection and drift of the predaceous stoneflies Acroneuria abnormis and Paragnetina fumosa. The presence of refugia (loose bark and leaf packs) was more important than hunger level and modified the effects of increased predator densities and aggressive interactions. Stoneflies concentrated to 8x natural densities with access to refugia remained longer on snags than a single stonefly without access to refugia. During periods of activity, refugia were defended with larger stoneflies always displacing smaller nymphs. During long periods of inactivity, two and sometimes three nymphs would rest side-by-side sharing the same refuge. Hunger level (starved versus satiated stoneflies), an indirect measure of a predator's response to prey availability, had no significant effect on drift or habitat selection regardless of the presence of refugia. Stonefly predators had a uniform distribution while their prey were clumped. Drift was deliberate and almost always delayed until night, usually at dusk or dawn. An examination of previous research plus the results of this study suggest that non-predatory intra- and interspecific interactions can be an important mechanism causing drift in streams. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC. RP RADER, RB (reprint author), USDA,FOREST SERV,ROCKY MT FOREST & RANGE EXPT STN,LARAMIE,WY 82070, USA. NR 52 TC 21 Z9 22 U1 0 U2 7 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0029-8549 J9 OECOLOGIA JI Oecologia PD JUL PY 1995 VL 103 IS 1 BP 1 EP 9 DI 10.1007/BF00328418 PG 9 WC Ecology SC Environmental Sciences & Ecology GA RJ294 UT WOS:A1995RJ29400001 PM 28306938 ER PT J AU MILLER, RM REINHARDT, DR JASTROW, JD AF MILLER, RM REINHARDT, DR JASTROW, JD TI EXTERNAL HYPHAL PRODUCTION OF VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGI IN PASTURE AND TALLGRASS PRAIRIE COMMUNITIES SO OECOLOGIA LA English DT Article DE MYCORRHIZA; EXTERNAL HYPHAE; ROOT MORPHOLOGY; GRASSLANDS; SOIL MOISTURE ID TRIFOLIUM-SUBTERRANEUM L; PLANT-ROOT SYSTEMS; SOIL AGGREGATION; INFECTION; COLONIZATION; PHOSPHORUS; DIAMETER; MORPHOLOGY; PATTERNS; ECOLOGY AB External hyphae of vesicular-arbuscular mycorrhizal (VAM) fungi were quantified over a growing season in a reconstructed tallgrass prairie and an ungrazed cool-season pasture. In both sites, hyphal lengths increased throughout the growing season. Peak external hyphal lengths were 111 m cm(-3) of soil in the prairie and 81 m cm(-3) of soil in the pasture. These hyphal lengths calculate to external hyphal dry weights of 457 mu g cm(-3) and 339 mu g cm(-3) of soil for prairie and pasture communities, respectively. The relationships among external hyphal length, root characteristics, soil P and soil moisture were also determined. Measures of gross root morphology [e.g., specific root length (SRL) and root mass] have a strong association with external hyphal length. Over the course of the study, both grassland communities experienced a major drought event in late spring. During this period a reduction in SRL occurred in both the pasture and prairie without a measured reduction in external hyphal length. Recovery for both the pasture and prairie occurred not by increasing SRL, but rather by increasing external hyphal length. This study suggests that growth is coordinated between VAM hyphae and root morphology, which in turn, are constrained by plant community composition and soil nutrient and moisture conditions. C1 UNIV ILLINOIS,DEPT BIOL SCI,CHICAGO,IL 60680. RP MILLER, RM (reprint author), ARGONNE NATL LAB,DIV ENVIRONM RES,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 42 TC 188 Z9 198 U1 18 U2 83 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0029-8549 J9 OECOLOGIA JI Oecologia PD JUL PY 1995 VL 103 IS 1 BP 17 EP 23 DI 10.1007/BF00328420 PG 7 WC Ecology SC Environmental Sciences & Ecology GA RJ294 UT WOS:A1995RJ29400003 PM 28306940 ER PT J AU KUNZSCHUGHART, LA SIMM, A MUELLERKLIESER, W AF KUNZSCHUGHART, LA SIMM, A MUELLERKLIESER, W TI ONCOGENE-ASSOCIATED TRANSFORMATION OF RODENT FIBROBLASTS IS ACCOMPANIED BY LARGE MORPHOLOGIC AND METABOLIC ALTERATIONS SO ONCOLOGY REPORTS LA English DT Article DE RAT EMBRYO FIBROBLASTS; MYC/RAS (CO)-TRANSFECTION; MONOLAYER GROWTH; PROLIFERATION AND METABOLISM ID HUMAN-DIPLOID FIBROBLASTS; OXYGEN-CONSUMPTION RATES; EMBRYO FIBROBLASTS; MAMMALIAN-CELLS; GROWTH-FACTORS; RAS ONCOGENES; MYC ONCOGENES; TUMOR-CELLS; GENE; INVITRO AB Cellular growth, proliferative activity, cell volume and metabolism of four differently transformed cell lines were investigated. Studies were carried out with spontaneously immortalized and poorly tumorigenic Rat1 cells, c-mycl-transfected and non-tumorigenic M1 fibroblasts, as well as their T24Ha-ras-(co)-transfected counterparts Rat1-T1 and MR1. Ras-transfection of both Rat1 and M1 cells, which is associated with aggressive tumor growth in vivo, caused significant morphological alterations, namely a 30-50% decrease in cell volume. A negative linear correlation between cell number and cell volume at confluence was observed. Furthermore, the expected stimulation of cellular growth rate after T24Ha-rastransfection was documented. Growth inhibition in Rat1 and M1 cultures was reflected by a dramatic decrease in the [H-3]thymidine labeling index (TLI) to below 3% while entering the stationary growth phase. In contrast, Rat1-T1 and MR1 cells had a TLI of greater than or equal to 18% even at confluence. Glucose uptake and lactate production were not different on a per cell basis: between parental cell line and the T24Ha-ras-transfected transformants. However, when these parameters were normalized for differences in cell volume, ras-transfection-resulted in increased glucose consumption and lactate release. The behavior of cellular and cell volume-related oxygen uptake throughout the growth period examined was remarkably different between the parental lines and the ras-transformed descendants. Oxygen consumption rates (QO(2)) of Rat1-T1 and MR1 cells were significantly less than those of Rat1 and M1 fibroblasts and showed different changes as a function of time in monolayer culture. Whereas the cellular QO(2) of the highly tumorigenic cell clones either decreased or leveled off throughout the entire period of plateau phase, a decline in cellular oxygen uptake was observed in the partly transformed cells until days 4-5 only. The decline was then followed by an increase with values almost returning to those recorded during the early exponential phase. The data presented demonstrate for the first time an impact of well-defined oncogenic alterations on the metabolic characteristics of cells which is a further step in the understanding of the pathophysiology of ras-associated tumor cells. C1 UNIV MAINZ,INST PHYSIOL & PATHOPHYSIOL,D-55099 MAINZ,GERMANY. UNIV WURZBURG,INST PHYSIOL CHEM 2,D-97074 WURZBURG,GERMANY. RP KUNZSCHUGHART, LA (reprint author), LOS ALAMOS NATL LAB,DIV LIFE SCI,LS-1,M888,LOS ALAMOS,NM 87545, USA. NR 55 TC 27 Z9 27 U1 0 U2 0 PU NATL HELLENIC RES FOUNDATION PI ATHENS PA C/O D A SPANDIDOS 48 VAS CONSTANTINOU AVE, ATHENS 11635, GREECE SN 1021-335X J9 ONCOL REP JI Oncol. Rep. PD JUL-AUG PY 1995 VL 2 IS 4 BP 651 EP 661 PG 11 WC Oncology SC Oncology GA RC519 UT WOS:A1995RC51900032 PM 21597794 ER PT J AU HADLEY, GR AF HADLEY, GR TI EFFECTIVE-INDEX MODEL FOR VERTICAL-CAVITY SURFACE-EMITTING LASERS SO OPTICS LETTERS LA English DT Article AB A new effective index optical model is presented for the analysis of lateral waveguiding effects in vertical-cavity surface-emitting lasers. In addition to providing a concise formalism for reducing the dimensionality of the Maxwell equations describing the lasing mode, this model also provides new insights into waveguiding phenomena in vertical-cavity lasers. In particular, it is shown that the effective index responsible for waveguiding is dependent only on lateral changes in the Fabry-Perot resonance frequency. This concept leads naturally to new design methods for these lasers that are expected to result in more efficient devices with superior modal characteristics. RP HADLEY, GR (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 6 TC 229 Z9 232 U1 1 U2 12 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUL 1 PY 1995 VL 20 IS 13 BP 1483 EP 1485 DI 10.1364/OL.20.001483 PG 3 WC Optics SC Optics GA RE245 UT WOS:A1995RE24500011 PM 19862056 ER PT J AU PERRY, MD BOYD, RD BRITTEN, JA DECKER, D SHORE, BW SHANNON, C SHULTS, E LI, LF AF PERRY, MD BOYD, RD BRITTEN, JA DECKER, D SHORE, BW SHANNON, C SHULTS, E LI, LF TI HIGH-EFFICIENCY MULTILAYER DIELECTRIC DIFFRACTION GRATINGS (VOL 20, PG 940, 1995) SO OPTICS LETTERS LA English DT Correction, Addition C1 HUGHES AIRCRAFT CO,ELECTROOPT SYST,EL SEGUNDO,CA 90245. UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721. RP PERRY, MD (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,L-493,LIVERMORE,CA 94550, USA. NR 1 TC 4 Z9 5 U1 1 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUL 1 PY 1995 VL 20 IS 13 BP 1513 EP 1513 DI 10.1364/OL.20.001513 PG 1 WC Optics SC Optics GA RE245 UT WOS:A1995RE24500021 PM 19862066 ER PT J AU LUO, XL KUBAS, GJ BURNS, CJ BUTCHER, RJ AF LUO, XL KUBAS, GJ BURNS, CJ BUTCHER, RJ TI A NOVEL SYNTHETIC ROUTE TO MOLYBDENUM HYDRIDO-THIOCARBAMOYL AND HYDROSULFIDO-CARBYNE COMPLEXES BY REACTIONS OF TRANS-MO(N-2)(2) (R(2)PC(2)H(4)PR(2))(2) WITH N,N-DIMETHYLTHIOFORMAMIDE SO ORGANOMETALLICS LA English DT Article ID X-RAY STRUCTURE; THIOCARBOXAMIDO COMPLEXES; DIMETHYLTHIOCARBAMOYL CHLORIDE; MOLECULAR-STRUCTURE; CARBONYL-COMPLEXES; CRYSTAL-STRUCTURE; METAL; TRIFLUOROMETHANESULFONATE; CHEMISTRY; CLEAVAGE AB The reactions of bis(dinitrogen)molybdenum complexes trans-Mo(N-2)(2)(R(2)PC(2)H(4)PR(2))(2) (R = Ph, Et) with N,N-dimethylthioformamide (HC(S)NMe(2)) in refluxing benzene under argon give the molybdenum hydrido-thiocarbamoyl complexes MoH(eta(2)-C(S)NMe(2))(R(2)PC(2)H(4)PR(2))2 (R = Ph (1a), Et(1b)). On heating at 125 degrees C in toluene solutions, compounds la and Ib rearrange to form the molybdenum hydrosulfido-aminocarbyne complexes trans-Mo(SH)-(=CNMe(2))(R(2)PC(2)H(4)PR(2))(2) (R = Ph (2a), Et (2b)). A mechanism is proposed for this thermal rearrangement which involves migration of the hydride ligand from molybdenum to the sulfur atom of the thiocarbamoyl Ligand to give the 16-electron Fischer carbene intermediate Mo-(=C(SH)NMe(2))(R(2)PC(2)H(4)PR(2))2, followed by migration of the hydrosulfido group from the carbene carbon to molybdenum. The molecular structures of compounds la and 2a have been determined by single-crystal X-ray diffraction studies. Crystallographic data for la: monoclinic, space group C2/c, a 19.536(4) Angstrom, b = 15.950(3) Angstrom, c =15.793(3) Angstrom, beta = 105.54(3)degrees, V = 4741(2) Angstrom(3), Z = 4, and R = 0.037. Crystallographic data for 2a: monoclinic, space group P2(1)/c, a = 19.516(4) Angstrom, b = 12.301(2) Angstrom, c = 19.899(4) Angstrom, beta = 102.46(3)degrees, V = 4665 (2)Angstrom(3), Z = 4, and R = 0.062. RP LOS ALAMOS NATL LAB, MAT & CHEM DESIGN GRP CST10, MAIL STOP C346, LOS ALAMOS, NM 87545 USA. NR 60 TC 21 Z9 21 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0276-7333 EI 1520-6041 J9 ORGANOMETALLICS JI Organometallics PD JUL PY 1995 VL 14 IS 7 BP 3370 EP 3376 DI 10.1021/om00007a043 PG 7 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA RJ363 UT WOS:A1995RJ36300043 ER PT J AU LUKENS, WW ANDERSEN, RA AF LUKENS, WW ANDERSEN, RA TI SYNTHESIS, STRUCTURE, AND REACTIONS OF (ETA(5)-C5H5)(3)ZR SO ORGANOMETALLICS LA English DT Article ID TRIS(ETA-5-CYCLOPENTADIENYL) ACTINIDE COMPLEXES; ELECTRON-SPIN RESONANCE; CRYSTAL-STRUCTURE; ORGANOMETAL COMPOUNDS; MOLECULAR-STRUCTURE; CHEMISTRY; TRIS(CYCLOPENTADIENYL)TECHNETIUM(III); TECHNETIUM; RADICALS; SPECTRA AB Cp(3)Zr was synthesized by the reduction of Cp(4)Zr (where Cp = C5H5) Cp(3)Zr is determined to be monomeric in the solid state by X-ray diffraction with three Cp rings bonded to zirconium in an eta(5) fashion. The 19-electron metallocene has a single unpaired electron and an axial EPR spectrum in frozen solution. It does not appear to form base adducts but does react by atom abstraction. The observed spectra and reactions are explained using the MO model for Cp(3)M developed by Bursten and Strittmatter and previously by Lauher and Hoffmann. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. NR 41 TC 30 Z9 30 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0276-7333 J9 ORGANOMETALLICS JI Organometallics PD JUL PY 1995 VL 14 IS 7 BP 3435 EP 3439 DI 10.1021/om00007a050 PG 5 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA RJ363 UT WOS:A1995RJ36300050 ER PT J AU YAN, M CHEN, SP MITCHELL, TE GAY, DH VYAS, S GRIMES, RW AF YAN, M CHEN, SP MITCHELL, TE GAY, DH VYAS, S GRIMES, RW TI ATOMISTIC STUDIES OF ENERGIES AND STRUCTURES OF (HK0) SURFACES IN NIO SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID EMBEDDED-ATOM-METHOD; STEPPED SURFACES; METALS; RELAXATIONS; MGO; POTENTIALS; SIMULATION; CRYSTALS; ALLOYS; AL AB In this work we study the energies and structures of (hk0) surfaces in NiO by computer simulation. The short-range interactions are described by Buckingham potentials. The O ion is treated as polarizable by employing the shell model. The coefficients of the potentials and the shell parameters are fitted empirically to properties of the NiO perfect lattice assuming full ionicity. It is shown that discrete atomic structures of (hk0) surfaces can be treated as monatomic steps distributed uniformly or non-uniformly on {100} terraces. The energy of a surface is determined by the density of;steps. The energy of the monatomic step is found to be 7 . 58 X 10(-10)J m(-1) before relaxation and 3 . 32 X 10(-10) J m(-1) after relaxation. The elastic interaction between steps is repulsive and increases as the square of the step density. Surface rumpling is found to be a general property, with the anion cores moving outwards from the cations and also outwards from the anion shells, so that the anions are polarized. The polarization of anions decays as an exponential function of the distance from the surface, and the decay length ranges from 0 . 4a to 0 . 5a, where a is the lattice parameter. The change in the interlayer spacings and the movements of individual ions are investigated in detail. C1 LOS ALAMOS NATL LAB, CTR MAT SCI, LOS ALAMOS, NM 87545 USA. UCL ROYAL INST GREAT BRITAIN, LONDON W1X 4BS, ENGLAND. RP YAN, M (reprint author), LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. NR 38 TC 17 Z9 17 U1 1 U2 5 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD JUL PY 1995 VL 72 IS 1 BP 121 EP 138 PG 18 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA RH306 UT WOS:A1995RH30600008 ER PT J AU VANSICLEN, CD AF VANSICLEN, CD TI MIGRATION OF GAS-BUBBLES IN SOLIDS TOWARDS VACANCY SOURCES SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID IMPLANTATION; SURFACE; GROWTH AB It is well known that overpressurized gas bubbles in solids will grow and equilibrate by acquisition of vacancies from nearby free surfaces, grain boundaries and other vacancy sources. Recently, Evans (1994, J. nucl. Mater., 210, 21) has suggested that the transfer of intragranular gas to grain boundaries in UO2 may be substantially enhanced by gas bubble diffusion biased towards the grain boundaries by the flow of thermal vacancies from the boundaries into the vacancy-depleted grain interiors. To address this possibility, upper and lower bounds on the velocity of a gas bubble towards a vacancy source are determined by calculating the vacancy flux through an immobile bubble fixed with respect to the lattice, and the flux through a bubble moving with the host material respectively. RP VANSICLEN, CD (reprint author), IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 18 TC 6 Z9 6 U1 0 U2 1 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PD JUL PY 1995 VL 72 IS 1 BP 41 EP 47 DI 10.1080/09500839508241612 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA RH499 UT WOS:A1995RH49900005 ER PT J AU KUNG, PJ MCHENRY, ME MALEY, MP KES, PH LAUGHLIN, DE MULLINS, WW AF KUNG, PJ MCHENRY, ME MALEY, MP KES, PH LAUGHLIN, DE MULLINS, WW TI CRITICAL-CURRENT ANISOTROPY, INTERGRANULAR COUPLING, AND EFFECTIVE PINNING ENERGY IN BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS AND AG SHEATHED (BI, PB)(2)SR2CA2CU3O10+DELTA TAPES SO PHYSICA C LA English DT Article ID CRITICAL CURRENT-DENSITY; CA-CU-O; HIGH-TEMPERATURE SUPERCONDUCTORS; FLUX-CREEP; GRAIN-BOUNDARIES; OXIDE SUPERCONDUCTORS; 2-DIMENSIONAL BEHAVIOR; HIGH-JC; PHASE; SILVER AB Bi2Sr2CaCu2O8+delta(Bi-2212) single crystals and Ag sheathed (Bi,Pb)(2)Sr2Ca2Cu3O10+delta(Bi-2223) tapes have been characterized by magnetometry and electron microscopy. Dislocations on the (001) planes appear to be the main defect observed in these samples and are considered to be important for flux pinning. Their distribution is more homogeneous in the Bi-2223 tape as a result of thermomechanical processing. In Bi-2212 single crystals, the measurement of magnetic hysteresis reveals a strong anisotropy in the magnetization critical current density (J(cm)). For the two cases H parallel to c and H perpendicular to c, the measurable Lorentz forces (F-L) that limit J, are found to be perpendicular to the c-axis; one causing vortices to hop in the ab plane and the other to slide along the ab plane. In contrast to this, we have probed the relative strength ratio of the intrinsic pinning to the extrinsic pinning in Bi-2223 tapes when we compare the results of H perpendicular to c with H parallel to c. No significant difference in J(cm) is observed, but for the same average J value, the effective pinning energy (U-eff) calculated from the time derivative of the magnetization (M) for H perpendicular to c is two orders of magnitude higher than that for H parallel to c. For these two superconductors, their U-eff's follow a power-law expression, U-eff(J, T, H)=(U-i/H-n)[1-(T/T-x)(2)](1.5)(J(i)/J)(mu), where U-i is the scale of activation energy, n is of the order of 1, T-x is related to the magnetic irreversibility temperature (T-irr), and both J(i) and mu depend on the nux-bundle size and the value of J/J(c). A two-dimensional (2D) flux-line lattice (FLL) is clearly identified in the Bi-2212 single crystal; however, imperfect texturing in the Bi-2223 tape smears out to some extent the observed J dependence of U-eff. Consequently, a larger anisotropy in the normalized relaxation rate, S = -d In M/d In t, and much higher S values are observed in Bi-2212 than in Bi-2223. C1 LOS ALAMOS NATL LAB,BIOPHYS GRP P6,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,CTR SUPERCOND TECHNOL,LOS ALAMOS,NM 87545. LEIDEN UNIV,KAMERLINGH ONNES LAB,2300 RA LEIDEN,NETHERLANDS. CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213. CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213. RI McHenry, Michael/B-8936-2009 NR 50 TC 34 Z9 34 U1 0 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JUL 1 PY 1995 VL 249 IS 1-2 BP 53 EP 68 DI 10.1016/0921-4534(95)00281-2 PG 16 WC Physics, Applied SC Physics GA RK006 UT WOS:A1995RK00600008 ER PT J AU ZHOU, R HULTS, WL BINGERT, JF COULTER, JY PETERSON, EJ SMITH, JL AF ZHOU, R HULTS, WL BINGERT, JF COULTER, JY PETERSON, EJ SMITH, JL TI AG RIBBONS IN BI2212 POWDER-IN-TUBE TAPE SO PHYSICA C LA English DT Article ID CRITICAL CURRENT-DENSITY; SILVER; WIRES AB For an optimum particle size, silver particles added to Bi2212 powder for powder-in-tube tape fabrication stretch into long, thin ribbons during rolling, but not during drawing. This ceramic/metal composite has excellent properties during deformation. Tapes are rolled as thin as 51 mu m with a 23 mu m core with no necking, sausaging, or cracking in the superconductor core. The Ag ribbons also provide additional Ag/superconductor interfaces to help Bi2212 phase formation and grain alignment. Improved critical current densities are reported both at 4 K and 26.2 K. RP ZHOU, R (reprint author), LOS ALAMOS NATL LAB,CTR SUPERCONDUCT TECHNOL,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545, USA. NR 14 TC 9 Z9 10 U1 3 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JUL 1 PY 1995 VL 249 IS 1-2 BP 166 EP 170 DI 10.1016/0921-4534(95)00286-3 PG 5 WC Physics, Applied SC Physics GA RK006 UT WOS:A1995RK00600020 ER PT J AU LUCE, BP AF LUCE, BP TI HOMOCLINIC EXPLOSIONS IN THE COMPLEX GINZBURG-LANDAU EQUATION SO PHYSICA D LA English DT Article ID DYNAMICS AB A bifurcation sequence of the complex Ginzburg-Landau (CGL) equation in an even subspace of spatially periodic solutions is analyzed with local three-dimensional bifurcation theory near homoclinic orbits. Bifurcation to chaos occurs via ''homoclinic explosions'', similar to bifurcation to chaos in the Lorenz model, and a similar global bifurcation picture is developed. An analysis via one-dimensional maps is developed to predict attractors. It is shown that the two mode Galerkin truncation can mimic some bifurcations of the full CGL equation deceptively, and also that the truncation fails to mimic many features of full PDE precisely because the truncation lacks many of the same homoclinic orbits. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP LUCE, BP (reprint author), LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545, USA. NR 16 TC 15 Z9 15 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-2789 J9 PHYSICA D JI Physica D PD JUL 1 PY 1995 VL 84 IS 3-4 BP 553 EP 581 DI 10.1016/0167-2789(95)00047-8 PG 29 WC Mathematics, Applied; Physics, Multidisciplinary; Physics, Mathematical SC Mathematics; Physics GA RF574 UT WOS:A1995RF57400013 ER PT J AU CAMASSA, R AF CAMASSA, R TI ON THE GEOMETRY OF AN ATMOSPHERIC SLOW MANIFOLD SO PHYSICA D-NONLINEAR PHENOMENA LA English DT Article ID EXISTENCE AB We examine the hyperbolic structure and the invariant manifolds of a model proposed by Lorenz to introduce the concept of an atmospheric slow manifold within the framework of dynamical system theory, We address the question of the long time asymptotic behaviour of the system using the (global) geometric point of view. It is shown that the model can be reduced to the classical example of a pendulum coupled to a harmonic oscillator. The dynamical regimes of interest for the slow manifold hypothesis correspond to regions of phase space near the saddle-center fixed point of this model which were not previously explored. These phase space regions are analysed using a combination of Melnikov-type methods and ideas from singular perturbation theory. By using the reversible symmetries of the model, an extension of the Melnikov theory is derived. This extension allows us to find homoclinic orbits and determine their approximation by simply computing the zeros of a certain function, which is constructed in terms of the usual Melnikov function, Countable infinities of global homoclinic bifurcations and existence of chaotic dynamics can be shown to exist by using the new tool. C1 LOS ALAMOS NATL LAB, CTR NONLINEAR STUDIES, LOS ALAMOS, NM 87545 USA. RP CAMASSA, R (reprint author), LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. NR 24 TC 28 Z9 30 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-2789 J9 PHYSICA D JI Physica D PD JUL 1 PY 1995 VL 84 IS 3-4 BP 357 EP 397 DI 10.1016/0167-2789(94)00239-M PG 41 WC Mathematics, Applied; Physics, Multidisciplinary; Physics, Mathematical SC Mathematics; Physics GA RF574 UT WOS:A1995RF57400003 ER PT J AU PRICHARD, D THEILER, J AF PRICHARD, D THEILER, J TI GENERALIZED REDUNDANCIES FOR TIME-SERIES ANALYSIS SO PHYSICA D-NONLINEAR PHENOMENA LA English DT Article ID STRANGE ATTRACTORS; CHAOTIC ATTRACTORS; CORRELATION DIMENSION; SPACE RECONSTRUCTION; DEPENDENT-VARIABLES; KOLMOGOROV-ENTROPY; LYAPUNOV EXPONENTS; DYNAMICAL-SYSTEMS; PERIODIC-ORBITS; PHASE-SPACE AB Extensions to various information-theoretic quantities (such as entropy, redundancy, and mutual information) are discussed in the context of their role in nonlinear time series analysis. We also discuss ''linearized'' versions of these quantities and their use as benchmarks in tests for nonlinearity. Many of these quantities can be expressed in terms of the generalized correlation integral, and this expression permits us to more dearly exhibit the relationships of these quantities to each other and to other commonly used nonlinear statistics (such as the BDS and Green-Savit statistics). Further, numerical estimation of these quantities is found to be more accurate and more efficient when the the correlation integral is employed in the computation. Finally, we consider several ''local'' versions of these quantities, including a local Kolmogorov-Sinai entropy, which gives an estimate of variability of the short-term predictability. C1 LOS ALAMOS NATL LAB, DIV THEORET, COMPLEX SYST GRP, LOS ALAMOS, NM 87545 USA. LOS ALAMOS NATL LAB, CTR NONLINEAR STUDIES, LOS ALAMOS, NM 87545 USA. LOS ALAMOS NATL LAB, DIV NONPROLIFERAT & INT SECUR, ASTROPHYS & RADIAT MEASUREMENT GRP, LOS ALAMOS, NM 87545 USA. SANTA FE INST, SANTA FE, NM 87501 USA. RP PRICHARD, D (reprint author), UNIV ALASKA, DEPT PHYS, FAIRBANKS, AK 99775 USA. NR 78 TC 92 Z9 104 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-2789 J9 PHYSICA D JI Physica D PD JUL 1 PY 1995 VL 84 IS 3-4 BP 476 EP 493 DI 10.1016/0167-2789(95)00041-2 PG 18 WC Mathematics, Applied; Physics, Multidisciplinary; Physics, Mathematical SC Mathematics; Physics GA RF574 UT WOS:A1995RF57400008 ER PT J AU CHEN, MH CHENG, KT JOHNSON, WR SAPIRSTEIN, J AF CHEN, MH CHENG, KT JOHNSON, WR SAPIRSTEIN, J TI RELATIVISTIC CONFIGURATION-INTERACTION CALCULATIONS FOR THE N=2 STATES OF LITHIUM-LIKE IONS SO PHYSICAL REVIEW A LA English DT Article ID PERTURBATION-THEORY CALCULATIONS; LAMB-SHIFT CALCULATIONS; RADIATIVE SELF-ENERGY; HELIUM-LIKE IONS; HEAVY-ATOMS; VACUUM-POLARIZATION; BREIT INTERACTION; TRIPLET-STATES; 1S(2)2S STATES; TRANSITION C1 UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556. RP CHEN, MH (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 47 TC 61 Z9 63 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 266 EP 273 DI 10.1103/PhysRevA.52.266 PG 8 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200036 ER PT J AU RESCIGNO, TN AF RESCIGNO, TN TI LOW-ENERGY-ELECTRON COLLISION PROCESSES IN NF3 SO PHYSICAL REVIEW A LA English DT Article ID KOHN VARIATIONAL METHOD; METHANE SCATTERING; ABINITIO; MOLECULES; IMPACT; F2 RP RESCIGNO, TN (reprint author), LAWRENCE LIVERMORE NATL LAB,PHYS & SPACE TECHNOL DIRECTORATE,POB 808,LIVERMORE,CA 94550, USA. NR 30 TC 20 Z9 20 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 329 EP 333 DI 10.1103/PhysRevA.52.329 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200042 ER PT J AU MENESES, GD BRESCANSIN, LM LEE, MT MICHELIN, SE MACHADO, LE CSANAK, G AF MENESES, GD BRESCANSIN, LM LEE, MT MICHELIN, SE MACHADO, LE CSANAK, G TI ELECTRON-IMPACT EXCITATION OF THE D(3)-PI-(U)(-)(V=0, 1, 2, 3 N=1) STATES OF H-2 - CROSS-SECTIONS AND ANISOTROPY PARAMETERS SO PHYSICAL REVIEW A LA English DT Article ID PHOTON COINCIDENCE PARAMETERS; ANGULAR-CORRELATION; POLARIZATION; HELIUM; COLLISIONS; SCATTERING; COHERENCE; GASES; ARGON; NEON C1 UNIV FED SAO CARLOS,DEPT QUIM,BR-13565905 SAO CARLOS,BRAZIL. UNIV FED SAO CARLOS,DEPT FIS,BR-13565905 SAO CARLOS,BRAZIL. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV FED SANTA CATARINA,DEPT FIS,FLORIANOPOLIS,SC,BRAZIL. RP MENESES, GD (reprint author), UNIV ESTADUAL CAMPINAS,INST FIS GLEB WATAGHIN,BR-13083970 SAO PAULO,BRAZIL. RI Inst. of Physics, Gleb Wataghin/A-9780-2017 NR 39 TC 3 Z9 3 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 404 EP 412 DI 10.1103/PhysRevA.52.404 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200054 ER PT J AU BANNISTER, ME MEYER, FW CHUNG, YS DJURIC, N DUNN, GH PINDZOLA, MS GRIFFIN, DC AF BANNISTER, ME MEYER, FW CHUNG, YS DJURIC, N DUNN, GH PINDZOLA, MS GRIFFIN, DC TI ABSOLUTE CROSS-SECTIONS FOR THE ELECTRON-IMPACT SINGLE IONIZATION OF MO4+ AND MO5+ IONS SO PHYSICAL REVIEW A LA English DT Article C1 UNIV COLORADO,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309. NATL INST STAND & TECHNOL,BOULDER,CO 80309. AUBURN UNIV,DEPT PHYS,AUBURN,AL 36849. ROLLINS COLL,DEPT PHYS,WINTER PK,FL 32789. RP BANNISTER, ME (reprint author), OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37830, USA. OI Bannister, Mark E./0000-0002-9572-8154 NR 17 TC 5 Z9 5 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 413 EP 419 DI 10.1103/PhysRevA.52.413 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200055 ER PT J AU PINDZOLA, MS ROBICHEAUX, FJ BADNELL, NR CHEN, MH ZIMMERMANN, M AF PINDZOLA, MS ROBICHEAUX, FJ BADNELL, NR CHEN, MH ZIMMERMANN, M TI PHOTORECOMBINATION OF HIGHLY-CHARGED URANIUM IONS SO PHYSICAL REVIEW A LA English DT Article ID RELATIVISTIC ATOMIC-STRUCTURE; RECOMBINATION CROSS-SECTIONS; DIELECTRONIC RECOMBINATION; RADIATIVE-RECOMBINATION; RESONANT TRANSFER; PROGRAM; EXCITATION; ELECTRON; U-90+ C1 UNIV STRATHCLYDE,DEPT PHYS,GLASGOW G4 0NG,LANARK,SCOTLAND. LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94551. UNIV GIESSEN,DEPT PHYS,GIESSEN,GERMANY. RP PINDZOLA, MS (reprint author), AUBURN UNIV,DEPT PHYS,AUBURN,AL 36849, USA. RI Robicheaux, Francis/F-4343-2014 OI Robicheaux, Francis/0000-0002-8054-6040 NR 20 TC 18 Z9 18 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 420 EP 425 DI 10.1103/PhysRevA.52.420 PG 6 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200056 ER PT J AU DENG, L GARRETT, WR ZHANG, JY PAYNE, MG AF DENG, L GARRETT, WR ZHANG, JY PAYNE, MG TI EFFECT OF QUANTUM INTERFERENCE ON THE SUPPRESSION OF THE AC STARK SHIFTING OF A MULTIPHOTON RESONANCE SO PHYSICAL REVIEW A LA English DT Article ID 3RD-HARMONIC GENERATION; MIXING INTERFERENCE; IONIZATION; EMISSION; EXCITATION; COMPETITION C1 OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37831. RP DENG, L (reprint author), GEORGIA SO UNIV,DEPT PHYS,STATESBORO,GA 30460, USA. RI Deng, Lu/B-3997-2012 NR 29 TC 11 Z9 11 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 489 EP 497 DI 10.1103/PhysRevA.52.489 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200065 ER PT J AU SHORE, BW MARTIN, J FEWELL, MP BERGMANN, K AF SHORE, BW MARTIN, J FEWELL, MP BERGMANN, K TI COHERENT POPULATION TRANSFER IN MULTILEVEL SYSTEMS WITH MAGNETIC SUBLEVELS .1. NUMERICAL-STUDIES SO PHYSICAL REVIEW A LA English DT Article ID STIMULATED RAMAN-SCATTERING; DELAYED PULSES; VIBRATIONAL LEVELS; ADIABATIC PASSAGE; LASER-PULSES; MOLECULAR-BEAMS; INVERSION; ALIGNMENT; COLLISIONS; ABSORPTION C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV NEW ENGLAND,DEPT PHYS,ARMIDALE,NSW 2351,AUSTRALIA. RP SHORE, BW (reprint author), UNIV KAISERSLAUTERN,FACHBEREICH PHYS,POSTFACH 3049,D-67653 KAISERSLAUTERN,GERMANY. RI BERGMANN, KLAAS/D-5543-2011 NR 56 TC 85 Z9 86 U1 1 U2 11 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 566 EP 582 DI 10.1103/PhysRevA.52.566 PG 17 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200073 ER PT J AU MARTIN, J SHORE, BW BERGMANN, K AF MARTIN, J SHORE, BW BERGMANN, K TI COHERENT POPULATION TRANSFER IN MULTILEVEL SYSTEMS WITH MAGNETIC SUBLEVELS .2. ALGEBRAIC ANALYSIS SO PHYSICAL REVIEW A LA English DT Article ID STIMULATED RAMAN-SCATTERING; DELAYED PULSES; VIBRATIONAL LEVELS; MOLECULES C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP MARTIN, J (reprint author), UNIV KAISERSLAUTERN,FACHBEREICH PHYS,POSTFACH 3049,D-67653 KAISERSLAUTERN,GERMANY. RI BERGMANN, KLAAS/D-5543-2011 NR 18 TC 75 Z9 76 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 583 EP 593 DI 10.1103/PhysRevA.52.583 PG 11 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200074 ER PT J AU FERNANDEZ, J MENDIOROZ, A BALDA, R ARRIANDIAGA, MA WEBER, MJ AF FERNANDEZ, J MENDIOROZ, A BALDA, R ARRIANDIAGA, MA WEBER, MJ TI SITE-SELECTIVE LASER SPECTROSCOPY OF MO3+ IN PHOSPHATE-GLASS SO PHYSICAL REVIEW B LA English DT Article ID OPTICAL-PROPERTIES; FLUORIDE GLASSES; STEADY-STATE C1 UNIV BASQUE COUNTRY, FAC CIENCIAS, DEPT FIS APLICADA 2, BILBAO, SPAIN. UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. RP FERNANDEZ, J (reprint author), UNIV BASQUE COUNTRY, ESCUELA TECN SUPER INGN IND & TELECOMUNICAC, DEPT FIS APLICADA 1, ALAMEDA URQUIJO, E-48013 BILBAO, SPAIN. RI Mendioroz, Arantza/D-3701-2015; OI Mendioroz, Arantza/0000-0002-1931-2333; Balda, Rolindes/0000-0001-6882-3167 NR 14 TC 0 Z9 0 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 1 BP 181 EP 187 DI 10.1103/PhysRevB.52.181 PG 7 WC Physics, Condensed Matter SC Physics GA RH930 UT WOS:A1995RH93000039 ER PT J AU CIRILLO, M ROTOLI, G BISHOP, AR GRONBECHJENSEN, N LOMDAHL, PS AF CIRILLO, M ROTOLI, G BISHOP, AR GRONBECHJENSEN, N LOMDAHL, PS TI HIGH-FREQUENCY PUMPING OF JOSEPHSON SOLITON OSCILLATORS SO PHYSICAL REVIEW B LA English DT Article ID PHASE-LOCKING; FLUXON; JUNCTION; MOTION C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. UNIV LAQUILA,DIPARTIMENTO ENERGET,I-67040 LAQUILA,ITALY. RP CIRILLO, M (reprint author), UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,VIA E CARNEVALE,I-00133 ROME,ITALY. RI Rotoli, Giacomo/E-4718-2011 OI Rotoli, Giacomo/0000-0002-2331-8949 NR 20 TC 5 Z9 5 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 1 BP 506 EP 512 DI 10.1103/PhysRevB.52.506 PG 7 WC Physics, Condensed Matter SC Physics GA RH930 UT WOS:A1995RH93000076 ER PT J AU DOMINGUEZ, D CERDEIRA, HA AF DOMINGUEZ, D CERDEIRA, HA TI SPATIOTEMPORAL CHAOS IN RF-DRIVEN JOSEPHSON-JUNCTION SERIES ARRAYS SO PHYSICAL REVIEW B LA English DT Article ID GIANT SHAPIRO STEPS; NONSTATISTICAL BEHAVIOR; NETWORK; SYSTEMS; PHASE; NOISE; TURBULENCE; DYNAMICS; ELEMENTS; STATES C1 INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY. RP DOMINGUEZ, D (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,T-11,MS B262,LOS ALAMOS,NM 87545, USA. RI Dominguez, Daniel/E-9304-2016 OI Dominguez, Daniel/0000-0002-6204-0150 NR 69 TC 16 Z9 16 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 1 BP 513 EP 526 DI 10.1103/PhysRevB.52.513 PG 14 WC Physics, Condensed Matter SC Physics GA RH930 UT WOS:A1995RH93000077 ER PT J AU LIU, R VEAL, BW GU, C PAULIKAS, AP KOSTIC, P OLSON, CG AF LIU, R VEAL, BW GU, C PAULIKAS, AP KOSTIC, P OLSON, CG TI ELECTRONIC-STRUCTURE AS A FUNCTION OF DOPING IN YBA2CU3OX(6.2-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-6.9) STUDIED BY ANGLE-RESOLVED PHOTOEMISSION SO PHYSICAL REVIEW B LA English DT Article ID FERMI-SURFACE TOPOLOGY; SINGLE-CRYSTALS; YBA2CU3OX; STATE; BI2SR2CACU2O8+DELTA; SUPERCONDUCTIVITY; TEMPERATURE; GROWTH; BANDS; ORDER C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP LIU, R (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 34 TC 15 Z9 15 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 1 BP 553 EP 558 DI 10.1103/PhysRevB.52.553 PG 6 WC Physics, Condensed Matter SC Physics GA RH930 UT WOS:A1995RH93000082 ER PT J AU NORMAN, MR RANDERIA, M DING, H CAMPUZANO, JC AF NORMAN, MR RANDERIA, M DING, H CAMPUZANO, JC TI PHENOMENOLOGICAL MODELS FOR THE GAP ANISOTROPY OF BI2SR2CACU2O8 AS MEASURED BY ANGLE-RESOLVED PHOTOEMISSION SPECTROSCOPY SO PHYSICAL REVIEW B LA English DT Article ID EXTENDED HUBBARD-MODEL; ELECTRONIC-STRUCTURE; TEMPERATURE-DEPENDENCE; BAND-STRUCTURE; FERMI-SURFACE; SUPERCONDUCTIVITY; OXIDES; STATE; PLANE C1 UNIV ILLINOIS,DEPT PHYS,CHICAGO,IL 60607. RP NORMAN, MR (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Campuzano, Juan Carlos/G-4358-2012; Norman, Michael/C-3644-2013; OI Ding, Hong/0000-0003-4422-9248 NR 49 TC 247 Z9 248 U1 0 U2 10 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 1 BP 615 EP 622 DI 10.1103/PhysRevB.52.615 PG 8 WC Physics, Condensed Matter SC Physics GA RH930 UT WOS:A1995RH93000089 ER PT J AU ABRAHAMS, E BALATSKY, A SCALAPINO, DJ SCHRIEFFER, JR AF ABRAHAMS, E BALATSKY, A SCALAPINO, DJ SCHRIEFFER, JR TI PROPERTIES OF ODD-GAP SUPERCONDUCTORS SO PHYSICAL REVIEW B LA English DT Article ID SINGLET SUPERCONDUCTORS AB We discuss the class of superconductors that have pairing correlations which are odd in frequency, as introduced originally by Berezinskii and more recently by Balatsky and Abrahams. As follows from the equations of motion, a natural definition of the thermodynamic order parameter of the odd-pairing state is the expectation value of a composite operator which couples a Cooper pair to a spin or charge fluctuation. We use a model pairing Hamiltonian to describe properties of the odd-pairing composite-operator condensate. We show that the superfluid stiffness is positive, we discuss superconductive tunneling with an ordinary superconductor, and we derive other thermodynamic and transport properties. C1 LOS ALAMOS NATL LAB,DIV THEORY,LOS ALAMOS,NM 87545. LD LANDAU THEORET PHYS INST,MOSCOW,RUSSIA. UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106. FLORIDA STATE UNIV,DEPT PHYS,TALLAHASSEE,FL 32310. RP ABRAHAMS, E (reprint author), RUTGERS STATE UNIV,SERIN PHYS LAB,POB 849,PISCATAWAY,NJ 08855, USA. NR 18 TC 86 Z9 86 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 2 BP 1271 EP 1278 DI 10.1103/PhysRevB.52.1271 PG 8 WC Physics, Condensed Matter SC Physics GA RJ711 UT WOS:A1995RJ71100077 ER PT J AU GOLDMAN, M BURMESTER, CP WILLE, LT GRONSKY, R AF GOLDMAN, M BURMESTER, CP WILLE, LT GRONSKY, R TI ROLE OF ELASTICITY ASSOCIATED WITH OXYGEN ORDERING IN YBA2CU3OZ SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TC SUPERCONDUCTORS; HIGH-TEMPERATURE SUPERCONDUCTORS; STRUCTURAL PHASE-TRANSITIONS; STRAIN-RELATED MORPHOLOGY; LATTICE-GAS MODEL; BA-CU-O; TWEED STRUCTURE; MONTE-CARLO; BASAL-PLANE; NONSTOICHIOMETRIC YBA2CU3O6+DELTA AB A Monte Carlo technique incorporating elasticity is applied to simulate oxygen-vacancy ordering and concomitant elastic distortion within the basal plane of YBa2Cu3Oz. The simulation model employs an extension of an anisotropic Ising model to account for small displacements of copper, oxygen, and vacancy positions within the basal plane so that the simultaneous evolution of atomic positions and occupancies can be examined. Simulations performed with this model are first compared to previous studies of oxygen-vacancy ordering under a static lattice approximation, and then used to investigate the contribution of elastic strain to the formation of experimentally observed root 2 superstructures, deformation tweed, twinning, nucleation and growth of ordered domains, and the nature of the tetragonal-to-orthorhombic transition occurring in this system. The influence of elasticity on microstructural evolution is examined via simulations of rapid quenching through the tetragonal-to-orthorhombic transition or of deformation of the orthorhombic phase to induce strain, both followed by annealing. Results are presented as lattice configuration photographs, fast Fourier transform intensity distributions, and strain maps. The formation and evolution of these microstructures are rationalized in terms of the accommodation of strain energy accumulated during the course of the simulated thermomechanical treatments. The formation of the root 2 alpha(0) X root 2 alpha(0), structure is found to result from strain dissipation via a softened phonon mode with wave vector q=[1/2 1/2 0]. C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA. FLORIDA ATLANTIC UNIV, DEPT PHYS, BOCA RATON, FL 33431 USA. RP GOLDMAN, M (reprint author), UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DEPT MAT SCI & MINERAL ENGN, BERKELEY, CA 94720 USA. NR 95 TC 8 Z9 8 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 JUL 1 PY 1995 VL 52 IS 2 BP 1331 EP 1346 DI 10.1103/PhysRevB.52.1331 PG 16 WC Physics, Condensed Matter SC Physics GA RJ711 UT WOS:A1995RJ71100086 ER PT J AU HAN, SH MAPLE, MB FISK, Z CHEONG, SW COOPER, AS CHMAISSEM, O SULLIVAN, JD MAREZIO, M AF HAN, SH MAPLE, MB FISK, Z CHEONG, SW COOPER, AS CHMAISSEM, O SULLIVAN, JD MAREZIO, M TI STRUCTURAL ASPECTS OF PRESSURE-DEPENDENT HOLE ORDERING IN LA(1.67)M(0.33)NIO(4) (M=CA, SR, OR BA) SO PHYSICAL REVIEW B LA English DT Article ID LA2NIO4+DELTA; TRANSITION; POLARONS AB A structural aspect of the hole ordering phenomenon in the La(2-x)M(x)NiO(4)(x=1/3, and M=Ca, Sr, or Pa) system has been investigated by means of x-ray diffraction experiments and measurements of the hydrostatic pressure dependence of the hole ordering temperature T-c. No significant change of the average lattice parameters was found near T-c, which is consistent with previous arguments that the origin of the ordering is electronic or magnetic in nature. The electrical resistivity conforms to variable range hopping behavior at low temperatures far below T-c and the associated thermal activation energy shows a linear pressure dependence. The highest T-c at ambient pressure was achieved with Sr doping. The pressure dependence of T-c is positive for M=Ba, negative for M=Ca, and very small and negative for M=Sr. The doping and pressure dependences of T-c are examined in the context of the coupling between the holes and the crystal lattice. We suggest that there is an optimum distance of 5.42 Angstrom between the nearest-neighbor ordered holes which gives the maximum T-c. C1 UNIV CALIF SAN DIEGO,INST PURE & APPL PHYS SCI,LA JOLLA,CA 92093. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. AT&T BELL LABS,MURRAY HILL,NJ 07974. UNIV GRENOBLE 1,CNRS,CRISTALLOG LAB,F-38042 GRENOBLE,FRANCE. RP HAN, SH (reprint author), UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92093, USA. NR 16 TC 24 Z9 24 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 2 BP 1347 EP 1351 DI 10.1103/PhysRevB.52.1347 PG 5 WC Physics, Condensed Matter SC Physics GA RJ711 UT WOS:A1995RJ71100087 ER PT J AU PONOMAREV, YG BRANDT, NB KHI, CS TCHESNOKOV, SV TSOKUR, EB YARYGIN, AV YUSUPOV, KT AMINOV, BA HEIN, MA MULLER, G PIEL, H WEHLER, D KRESIN, VZ ROSNER, K WINZER, K WOLF, T AF PONOMAREV, YG BRANDT, NB KHI, CS TCHESNOKOV, SV TSOKUR, EB YARYGIN, AV YUSUPOV, KT AMINOV, BA HEIN, MA MULLER, G PIEL, H WEHLER, D KRESIN, VZ ROSNER, K WINZER, K WOLF, T TI MANIFESTATION OF A CLEAR GAP STRUCTURE FROM POINT-CONTACT AND TUNNELING SPECTROSCOPY OF YBA2CU3O7-X AND YBBA2CU3O7-X SINGLE-CRYSTALS SO PHYSICAL REVIEW B LA English DT Article ID ANDREEV SCATTERING; ENERGY-GAP; WEAK LINKS; BREAK-JUNCTIONS; SUPERCONDUCTOR; TRANSITION; CONSTRICTIONS; REFLECTION AB Methods of point-contact and tunneling spectroscopy have been used to determine the gap parameter Delta for single crystals of YBa2Cu3O7-x and YbBa2Cu3O7-x with critical temperature 60 K less than or equal to T-c less than or equal to 90 K. Sharp dips of the dynamic conductance dI/dV of point contacts at voltages V-n=2 Delta/(en)(n less than or equal to 8-9), as well as a clear gap structure in the I(V) characteristics of tunnel junctions give convincing evidence for the existence of a true superconducting gap in YBa2Cu3O7-x and YbBa2Cu3O7-x single crystals at least at T much less than T-c, as in conventional superconductors. C1 BERG UNIV GESAMTHSCH WUPPERTAL,FACHBEREICH PHYS,D-42097 WUPPERTAL,GERMANY. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV GOTTINGEN,INST PHYS 1,D-37073 GOTTINGEN,GERMANY. KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST TECH PHYS,D-76021 KARLSRUHE,GERMANY. RP PONOMAREV, YG (reprint author), MOSCOW MV LOMONOSOV STATE UNIV,FAC PHYS,MOSCOW 119899,RUSSIA. RI Ponomarev, Yaroslav/G-5530-2010; Brandt, Nikolay/D-3605-2012; Chesnokov, Sergey/H-4842-2011 OI Ponomarev, Yaroslav/0000-0002-4857-0315; Brandt, Nikolay/0000-0001-7807-6943; NR 31 TC 33 Z9 33 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 2 BP 1352 EP 1357 DI 10.1103/PhysRevB.52.1352 PG 6 WC Physics, Condensed Matter SC Physics GA RJ711 UT WOS:A1995RJ71100088 ER PT J AU JONES, EC NORTON, DP SALES, BC LOWNDES, DH FEENSTRA, R AF JONES, EC NORTON, DP SALES, BC LOWNDES, DH FEENSTRA, R TI PHONON-DRAG THERMOPOWER CORRELATIONS TO T-C IN SUPERCONDUCTING SRXND1-XCUO2-DELTA - EVIDENCE FOR PHONON-MEDIATED PAIRING IN THE HIGH-T-C PARENT COMPOUNDS SO PHYSICAL REVIEW B LA English DT Note ID THERMOELECTRIC-POWER; YBA2CU3O6.95; TEMPERATURE AB The ACuO(2) compounds-containing only CuO2 planes separated by A ions-are the basic ''building blocks'' of the more complex high-T-c superconductors. Trivalently doped SrxNd1-xCuO2-delta thin films are shown to superconduct with the appearance of a phonon-drag contribution to the thermopower at the superconducting doping threshold. A monotonic increase in this phonon-drag contribution with Te suggests that electron-phonon interactions play an important role in the pairing mechanism. A correlation between the deduced BCS coupling constants and T-c is consistent with strong-coupling theory. RP JONES, EC (reprint author), OAK RIDGE NATL LAB,POB 2009,OAK RIDGE,TN 37831, USA. NR 26 TC 5 Z9 5 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 2 BP R743 EP R746 DI 10.1103/PhysRevB.52.R743 PG 4 WC Physics, Condensed Matter SC Physics GA RJ711 UT WOS:A1995RJ71100017 ER PT J AU ZHU, Q AF ZHU, Q TI PRESSURE-INDUCED POLYMERIZATION OF TERNARY FULLERIDE SUPERCONDUCTORS SO PHYSICAL REVIEW B LA English DT Note ID ELECTRONIC-PROPERTIES; PHASE-TRANSITION; SOLID C60; C-60 AB A reversible conversion of the cubic trianionic fulleride superconductors Na2RbC60 and Na2CsC60 to orthorhombic structures is observed at modest pressures (less than or equal to 3 kbar) and ambient temperature. Structure refinement based on synchrotron powder x-ray profiles reveals polymer chains with 9.35 Angstrom intermolecular separation, comparable to that in the metastable monoanionic dimer and polymer phases of KC60 and RbC60. In contrast, K3C60, Rb3C60, etc. are stable to much higher pressures due to their larger lattice constants at ambient pressure. RP BROOKHAVEN NATL LAB, DEPT PHYS, UPTON, NY 11973 USA. NR 28 TC 29 Z9 29 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JUL 1 PY 1995 VL 52 IS 2 BP R723 EP R726 DI 10.1103/PhysRevB.52.R723 PG 4 WC Physics, Condensed Matter SC Physics GA RJ711 UT WOS:A1995RJ71100012 ER PT J AU SOOD, PC GIZON, A BURKE, DG SINGH, B LIANG, CF SHELINE, RK MARTIN, MJ HOFF, RW AF SOOD, PC GIZON, A BURKE, DG SINGH, B LIANG, CF SHELINE, RK MARTIN, MJ HOFF, RW TI BETA-DECAY OF RA-228 AND POSSIBLE LEVEL STRUCTURES IN AC-228 SO PHYSICAL REVIEW C LA English DT Article ID LYING 2-PARTICLE STATES; ODD-A NUCLEI; RESIDUAL INTERACTION; OCTUPOLE DEFORMATION; ACTINIDE REGION; ENERGY-LEVELS AB An iron-free beta spectrometer with pre- and post-acceleration of electrons was used to study beta branches and conversion electrons at very low energies in the beta decay of Ra-228. Results of conversion-electron and gamma-ray spectroscopy are analyzed using beta selection rules and two-quasiparticle-rotor model considerations. A tentative Ac-228 level scheme, including model-dependent spin-parity and configuration assignments consistent with the available data, is presented. C1 BANARAS HINDU UNIV,DEPT PHYS,VARANASI 221005,UTTAR PRADESH,INDIA. UNIV GRENOBLE 1,INST SCI NUCL,IN2P3,CNRS,F-38026 GRENOBLE,FRANCE. CTR SPECTROMETRIE NUCL & SPECTROMETRIE MASSE,F-91405 ORSAY,FRANCE. FLORIDA STATE UNIV,DEPT CHEM & PHYS,TALLAHASSEE,FL 32306. OAK RIDGE NATL LAB,NUCL DATA PROJECT,OAK RIDGE,TN 37831. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP SOOD, PC (reprint author), MCMASTER UNIV,DEPT PHYS & ASTRON,HAMILTON,ON L8S 4M1,CANADA. NR 22 TC 5 Z9 5 U1 3 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JUL PY 1995 VL 52 IS 1 BP 88 EP 92 DI 10.1103/PhysRevC.52.88 PG 5 WC Physics, Nuclear SC Physics GA RJ709 UT WOS:A1995RJ70900014 ER PT J AU FALLON, P BEAUSANG, CW ASZTALOS, S NISIUS, D JANSSENS, RVF BERGSTROM, M CARPENTER, M CEDERWALL, B CLARKE, S CROWELL, B DELEPLANQUE, MA DIAMOND, RM HENRY, RG KHOO, TL LAURITSEN, T LEE, IY MACCHIAVELLI, AO STEPHENS, FS TWIN, PJ AF FALLON, P BEAUSANG, CW ASZTALOS, S NISIUS, D JANSSENS, RVF BERGSTROM, M CARPENTER, M CEDERWALL, B CLARKE, S CROWELL, B DELEPLANQUE, MA DIAMOND, RM HENRY, RG KHOO, TL LAURITSEN, T LEE, IY MACCHIAVELLI, AO STEPHENS, FS TWIN, PJ TI PROTON AND NEUTRON EXCITATIONS IN SUPERDEFORMED TB-150 SO PHYSICAL REVIEW C LA English DT Article ID GD-149 NUCLEUS; BANDS; ALIGNMENT; SYMMETRY; STATES AB Two new superdeformed (SD) bands have been observed in Tb-150 using the reaction P-31 + Sn-124 and the GAMMASPHERE detector array. These new bands are interpreted as being excited SD configurations involving a proton and a neutron particle-hole excitation, respectively. The configurations are discussed in terms of the occupancy of high-N intruder orbitals. These data are used to provide information on (i) the contribution to the dynamic moments of inertia due to the occupation of specific orbitals, (ii) the deformation driving effects of the particle-hole states, and (iii) the consequences of these effects on pairing and band crossings. C1 UNIV LIVERPOOL,OLIVER LODGE LAB,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. ARGONNE NATL LAB,ARGONNE,IL 60439. RP FALLON, P (reprint author), UNIV CALIF BERKELEY,DIV NUCL SCI,BERKELEY,CA 94720, USA. RI Cederwall, Bo/M-3337-2014; Carpenter, Michael/E-4287-2015 OI Cederwall, Bo/0000-0003-1771-2656; Carpenter, Michael/0000-0002-3237-5734 NR 20 TC 18 Z9 18 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JUL PY 1995 VL 52 IS 1 BP 93 EP 98 DI 10.1103/PhysRevC.52.93 PG 6 WC Physics, Nuclear SC Physics GA RJ709 UT WOS:A1995RJ70900015 ER PT J AU PROUT, DL ZAFIRATOS, C TADDEUCCI, TN ULLMANN, J BYRD, RC CAREY, TA LISOWSKI, P MCCLELLAND, JB RYBARCZYK, LJ SAILOR, W AMIAN, W BRAUNSTEIN, M LIND, D MERCER, DJ COOPER, D DELUCIA, S LUTHER, B MARCHLENSKI, DG SUGARBAKER, E RAPAPORT, J PARK, BK GULMEZ, G WHITTEN, CA GOODMAN, CD HUANG, W CISKOWSKI, D ALFORD, WP AF PROUT, DL ZAFIRATOS, C TADDEUCCI, TN ULLMANN, J BYRD, RC CAREY, TA LISOWSKI, P MCCLELLAND, JB RYBARCZYK, LJ SAILOR, W AMIAN, W BRAUNSTEIN, M LIND, D MERCER, DJ COOPER, D DELUCIA, S LUTHER, B MARCHLENSKI, DG SUGARBAKER, E RAPAPORT, J PARK, BK GULMEZ, G WHITTEN, CA GOODMAN, CD HUANG, W CISKOWSKI, D ALFORD, WP TI CROSS-SECTIONS AND ANALYZING POWERS FOR QUASI-ELASTIC SCATTERING AT 795 AND 495 MEV USING THE (P-]N) REACTION SO PHYSICAL REVIEW C LA English DT Article ID QUASI-ELASTIC PEAK; 800 MEV PROTONS; CHARGE-EXCHANGE; ELECTRON-SCATTERING; NEUTRON-SPECTRA; SPIN; EXCITATIONS; ENERGIES; 0DEGREES; NUCLEI AB Double differential cross sections and analyzing powers over the quasielastic region have been measured using the ((p) over right arrow, n) reaction on C-12 and Pb-nat. The data were obtained at proton energies of 495 and 795 MeV and cover momentum transfers from 1.0-2.1 fm(-1) at 495 MeV data and from 0.0-3.5 fm(-1) at 795 MeV. The cross section data are compared to results from a nonrelativistic reaction model that includes contributions from two-step scattering. The analyzing power measurements are compared to a recent relativistic plane-waves model. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. OHIO STATE UNIV,COLUMBUS,OH 43210. OHIO UNIV,ATHENS,OH 45701. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. INDIANA UNIV,CYCLOTRON FACIL,BLOOMINGTON,IN 47405. BOGAZICI UNIV,BEBEK 80815,TURKEY. EASTERN NEW MEXICO STATE UNIV,PORTALES,NM 88130. NEW MEXICO STATE UNIV,LAS CRUCES,NM 88003. UNIV TEXAS,AUSTIN,TX 78712. UNIV WESTERN ONTARIO,LONDON,ON N6A 3K7,CANADA. RP PROUT, DL (reprint author), UNIV COLORADO,BOULDER,CO 80309, USA. NR 48 TC 20 Z9 20 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JUL PY 1995 VL 52 IS 1 BP 228 EP 242 DI 10.1103/PhysRevC.52.228 PG 15 WC Physics, Nuclear SC Physics GA RJ709 UT WOS:A1995RJ70900032 ER PT J AU PARKER, WE CHADWICK, MB DIETRICH, FS KAMMERAAD, JE LUKE, SJ SALE, KE CHASTELER, RM GODWIN, MA KRAMER, LH SCHMID, GJ WELLER, HR KERMAN, AK AF PARKER, WE CHADWICK, MB DIETRICH, FS KAMMERAAD, JE LUKE, SJ SALE, KE CHASTELER, RM GODWIN, MA KRAMER, LH SCHMID, GJ WELLER, HR KERMAN, AK TI FLUCTUATION EFFECTS IN RADIATIVE-CAPTURE TO UNSTABLE FINAL-STATES - A TEST VIA THE Y-89(P-]-]GAMMA) REACTION AT E(P)=19.6 MEV SO PHYSICAL REVIEW C LA English DT Article ID MULTISTEP COMPOUND; MODEL; EMISSION; PROTON AB We have developed an extended direct-semidirect (DSD) model for fast-nucleon capture to virtual single-particle configurations that subsequently damp into the compound nucleus or (at sufficiently high excitation energies) escape into the continuum. The inclusion of final-state fluctuation effects is an important feature of this model. To test the model we have measured the spectra of gamma rays from approximately 10 Mev to the endpoint in the Y-89((p) over right arrow, gamma) reaction with 19.6 MeV polarized protons from the TUNL tandem accelerator. Gamma spectra were measured with a pair of 25.4 cm x 25.4 cm anticoincidence-shielded NaI detectors at angles of 30 degrees, 55 degrees, 90 degrees, 125 degrees, and 150 degrees with respect to the incident beam. The spectra show significant analyzing powers and forward peaking of the angular distributions. These features allow for the discrimination between compound processes and direct processes. Analyzing powers and fore-aft asymmetries were observed for gamma energies below those associated with direct-semidirect transitions to known bound final states. We have also performed Hauser-Feshbach calculations of the statistical component of the gamma emission, which dominates below approximately 15-16 MeV. The extended DSD model reproduces the spectral shapes and analyzing powers above this energy quite well. There is no evidence in the present reaction that additional mechanisms, such as multistep compound or multistep direct emission, are required. C1 DUKE UNIV,DURHAM,NC 27708. TRIANGLE UNIV NUCL LAB,DURHAM,NC 27708. MIT,CTR THEORET PHYS,CAMBRIDGE,MA 02139. MIT,DEPT PHYS,CAMBRIDGE,MA 02139. RP PARKER, WE (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 40 TC 27 Z9 27 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JUL PY 1995 VL 52 IS 1 BP 252 EP 266 DI 10.1103/PhysRevC.52.252 PG 15 WC Physics, Nuclear SC Physics GA RJ709 UT WOS:A1995RJ70900034 ER PT J AU MACK, AM HINTZ, NM COOK, D FRANEY, MA AMANN, J BARLETT, M HOFFMANN, GW PAULETTA, G CISKOWSKI, D PURCELL, M AF MACK, AM HINTZ, NM COOK, D FRANEY, MA AMANN, J BARLETT, M HOFFMANN, GW PAULETTA, G CISKOWSKI, D PURCELL, M TI PROTON-SCATTERING BY PB-206,PB-207,PB-208 AT 650 MEV - PHENOMENOLOGICAL ANALYSIS SO PHYSICAL REVIEW C LA English DT Article ID NUCLEON-NUCLEUS SCATTERING; ELECTRON-SCATTERING; ELASTIC-SCATTERING; INELASTIC-SCATTERING; MATRIX-ELEMENTS; NEUTRON; PB-208; TRANSITIONS; CHARGE AB Elastic and inelastic differential cross sections and analyzing powers are presented for the scattering of 650 MeV protons from Pb-206,Pb-207,Pb-208. Five phenomenological optical potential sets with comparable chi(2) values are obtained. The volume integrals and root-mean-square (rms) radii of these potential sets are compared with those expected from the impulse approximation. The agreement is close for the imaginary, but not the real central potentials. The potential rms radii are similar to 3% smaller than those from the impulse approximation indicating a ''shrinking'' of the effective nuclear density. The inelastic data for (206,208Pb) are analyzed using collective transition densities. The results are then compared with electromagnetic matrix elements to obtain neutron-proton transition matrix element ratios. These are in fairly good agreement with earlier determinations and indicate large core polarization contributions to the low-lying ''two neutron hole'' states in Pb-206. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV TEXAS,DEPT PHYS,AUSTIN,TX 78712. RP MACK, AM (reprint author), UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455, USA. NR 45 TC 5 Z9 6 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JUL PY 1995 VL 52 IS 1 BP 291 EP 300 DI 10.1103/PhysRevC.52.291 PG 10 WC Physics, Nuclear SC Physics GA RJ709 UT WOS:A1995RJ70900038 ER PT J AU HELGESSON, J RANDRUP, J AF HELGESSON, J RANDRUP, J TI DILEPTON PRODUCTION FROM PION ANNIHILATION IN A REALISTIC DELTA-HOLE MODEL SO PHYSICAL REVIEW C LA English DT Note ID HEAVY-ION COLLISIONS; NUCLEAR-MATTER; DYNAMICS; PROBE AB Dilepton production from pi(+) pi(-) annihilation in nuclear matter is calculated ina simple two-level Delta-hole model and a more realistic model including both real pions and nucleon-hole and Delta-hole excitations. Substantial enhancement of the dilepton yield is found in the invariant mass region M < 250 MeV/c(2) due to annihilation of noncollective low-energy high-momentum nucleon-hole modes having a (very) small pion component. The inclusion of a finite temperature in the dispersion relation does not affect the total dilepton yield much, although it causes significant redistribution of the contributions from the various combinations of pionic modes. RP HELGESSON, J (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 11 TC 11 Z9 11 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JUL PY 1995 VL 52 IS 1 BP 427 EP 430 DI 10.1103/PhysRevC.52.427 PG 4 WC Physics, Nuclear SC Physics GA RJ709 UT WOS:A1995RJ70900057 ER PT J AU GALLAS, E ABOLINS, M BROCK, R COBAU, WG HATCHER, RW OWEN, DP PERKINS, GJ TARTAGLIA, M WEERTS, H BOGERT, D FUESS, S KOIZUMI, G STUTTE, L FRIEDMAN, JI KENDALL, HW KISTIAKOWSKY, V LYONS, T OSBORNE, LS PITT, R ROSENSON, L SCHNEEKLOTH, U STRONGIN, B TAYLOR, FE WALKER, JK WHITE, A WOMERSLEY, WJ AF GALLAS, E ABOLINS, M BROCK, R COBAU, WG HATCHER, RW OWEN, DP PERKINS, GJ TARTAGLIA, M WEERTS, H BOGERT, D FUESS, S KOIZUMI, G STUTTE, L FRIEDMAN, JI KENDALL, HW KISTIAKOWSKY, V LYONS, T OSBORNE, LS PITT, R ROSENSON, L SCHNEEKLOTH, U STRONGIN, B TAYLOR, FE WALKER, JK WHITE, A WOMERSLEY, WJ TI SEARCH FOR NEUTRAL WEAKLY INTERACTING MASSIVE PARTICLES IN THE FERMILAB-TEVATRON WIDE-BAND NEUTRINO BEAM SO PHYSICAL REVIEW D LA English DT Article ID LIMITS; DECAYS C1 MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. MIT,NUCL SCI LAB,CAMBRIDGE,MA 02139. UNIV FLORIDA,DEPT PHYS,GAINESVILLE,FL 32611. NR 15 TC 16 Z9 16 U1 0 U2 1 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 JUL 1 PY 1995 VL 52 IS 1 BP 6 EP 14 DI 10.1103/PhysRevD.52.6 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH931 UT WOS:A1995RH93100003 ER PT J AU RAMSEY, GP SIVERS, D AF RAMSEY, GP SIVERS, D TI NN SCATTERING-AMPLITUDES FROM 90-DEGREES CM INTO THE LANDSHOFF REGION SO PHYSICAL REVIEW D LA English DT Article ID LARGE-MOMENTUM-TRANSFER; PERTURBATIVE QUANTUM CHROMODYNAMICS; PROTON-PROTON SCATTERING; ANGLE ELASTIC-SCATTERING; EXCLUSIVE PROCESSES; ENERGY-DEPENDENCE; SPIN OBSERVABLES; Q2 DEPENDENCE; SCALING LAWS; LARGE-T C1 ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439. PORTLAND PHYS INST,PORTLAND,OR 97201. RP RAMSEY, GP (reprint author), LOYOLA UNIV,DEPT PHYS,CHICAGO,IL 60626, USA. NR 38 TC 8 Z9 8 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 JUL 1 PY 1995 VL 52 IS 1 BP 116 EP 123 DI 10.1103/PhysRevD.52.116 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH931 UT WOS:A1995RH93100015 ER PT J AU ALBRIGHT, CH NANDI, S AF ALBRIGHT, CH NANDI, S TI CONSTRUCTION OF FERMION MASS MATRICES YIELDING 2 POPULAR NEUTRINO SCENARIOS SO PHYSICAL REVIEW D LA English DT Article ID GRAND-UNIFIED THEORIES; INVARIANT FUNCTIONS; YUKAWA COUPLINGS; WEAK-INTERACTION; STANDARD MODEL; TOP-QUARK; OSCILLATIONS; PREDICTIONS; ANSATZ; UNIFICATION C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. OKLAHOMA STATE UNIV,DEPT PHYS,STILLWATER,OK 74078. RP ALBRIGHT, CH (reprint author), NO ILLINOIS UNIV,DEPT PHYS,DE KALB,IL 60115, USA. OI Albright, Carl/0000-0002-2252-6359 NR 69 TC 8 Z9 8 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 JUL 1 PY 1995 VL 52 IS 1 BP 410 EP 419 DI 10.1103/PhysRevD.52.410 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH931 UT WOS:A1995RH93100043 ER PT J AU CARONE, CD MURAYAMA, H AF CARONE, CD MURAYAMA, H TI REALISTIC MODELS WITH A LIGHT U(1) GAUGE BOSON COUPLED TO BARYON NUMBER SO PHYSICAL REVIEW D LA English DT Article ID DARK MATTER RP CARONE, CD (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,THEORET PHYS GRP,BERKELEY,CA 94720, USA. RI Murayama, Hitoshi/A-4286-2011 NR 29 TC 61 Z9 61 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 JUL 1 PY 1995 VL 52 IS 1 BP 484 EP 493 DI 10.1103/PhysRevD.52.484 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH931 UT WOS:A1995RH93100049 ER PT J AU HYER, T AF HYER, T TI UNITARITY CONSTRAINTS ON MESON WAVE-FUNCTIONS SO PHYSICAL REVIEW D LA English DT Note RP STANFORD UNIV, STANFORD LINEAR ACCELERATOR CTR, STANFORD, CA 94309 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JUL 1 PY 1995 VL 52 IS 1 BP 547 EP 549 DI 10.1103/PhysRevD.52.547 PG 3 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH931 UT WOS:A1995RH93100059 ER PT J AU PERSSON, P ABERG, S AF PERSSON, P ABERG, S TI STATISTICAL MEASURES OF CHAOS IN QUANTUM-SYSTEMS SO PHYSICAL REVIEW E LA English DT Article ID PARAMETRIC MOTION; ENERGY-LEVELS; SPECTRA; BILLIARD AB A simple model, based on random matrix theory, is utilized for the description of energy levels and level dynamics in mixed regular and chaotic quantum systems. We find that different types of level statistics, such as nearest neighbor distributions, long-range correlations, wave function analysis, curvature distributions, etc., show dramatically different sensitivity to the ''chaoticity parameter. Differences between long-range and short-range fluctuation measures are explained in terms of localization of the wave functions. C1 OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE, TN 37831 USA. RP PERSSON, P (reprint author), LUND INST TECHNOL, DEPT MATH PHYS, POB 118, S-22100 LUND, SWEDEN. NR 22 TC 21 Z9 21 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD JUL PY 1995 VL 52 IS 1 BP 148 EP 153 DI 10.1103/PhysRevE.52.148 PN A PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RK545 UT WOS:A1995RK54500024 ER PT J AU FERNOW, RC GALLARDO, JC AF FERNOW, RC GALLARDO, JC TI MUON TRANSVERSE IONIZATION COOLING - STOCHASTIC APPROACH SO PHYSICAL REVIEW E LA English DT Article AB Transverse ionization cooling of muons is modeled as a Brownian motion of the muon beam as it traverses a Li or Be rod. A Langevin-like equation is written for the free particle case (no external transverse magnetic field) and for the case of a harmonically bound beam in the presence of a focusing magnetic field. We demonstrate that the well-knows muon cooling equations for short absorbers can be extrapolated to the useful case of a long absorber rod with a focusing magnetic field present. RP FERNOW, RC (reprint author), BROOKHAVEN NATL LAB,CTR ACCELERATOR PHYS,UPTON,NY 11973, USA. OI Gallardo, Juan C/0000-0002-5191-3067 NR 21 TC 20 Z9 20 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUL PY 1995 VL 52 IS 1 BP 1039 EP 1042 DI 10.1103/PhysRevE.52.1039 PN B PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RK547 UT WOS:A1995RK54700036 ER PT J AU CLARK, TT ZEMACH, C AF CLARK, TT ZEMACH, C TI A SPECTRAL MODEL APPLIED TO HOMOGENEOUS TURBULENCE SO PHYSICS OF FLUIDS LA English DT Article ID GRID-GENERATED TURBULENCE; MEAN TEMPERATURE-GRADIENT; SUCCESSIVE PLANE STRAINS; SHEAR-FLOW; ISOTROPY; RETURN; DISTORTION; STATES; DECAY AB Because a spectral model describes distributions of turbulent energy and stress in wave-number space or, equivalently in terms of a distribution of length scales, it can account for the variation of evolution rates with length scale. A spectral turbulence model adapted from a model introduced by Besnard, Rauenzahn, Harlow, and Zemach is applied here to homogeneous turbulent flows driven by constant mean-flow gradients and to free decay of such flows. To the extent permitted by the experimental data, initial turbulent spectra are inferred, and their evolutions in time are computed to obtain detailed quantitative predictions of the spectra, relaxation times to self-similarity, self-similar spectrum shapes, growth rates, and power-law time dependence of turbulent energies and dominant-eddy sizes, and integral data, such as the components of the Reynolds stress tenser and the Reynolds stress anisotropy tenser. The match to experimental data, within the limits of experimental uncertainties, is good. Some qualifications on the limits of validity of the model are noted. Among phenomena encountered for which the spectral description provides quantitative understanding are the convergence of the anisotropy tenser to a nonzero Limit under conditions of free decay (i.e., incomplete return to isotropy, implying a Rotta constant of unity) and the apparent ''return to anisotropy,'' observed after an anisotropy tenser vanishes due to a temporary cancellation of positive and negative parts of a spectrum, which evolve at different rates. (C) 1995 American Institute of Physics. RP CLARK, TT (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 55 TC 24 Z9 24 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JUL PY 1995 VL 7 IS 7 BP 1674 EP 1694 DI 10.1063/1.868485 PG 21 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RJ659 UT WOS:A1995RJ65900014 ER PT J AU MANLEY, O TEMAM, R WANG, SH AF MANLEY, O TEMAM, R WANG, SH TI INERTIAL MANIFOLDS, PARTIALLY SPACE-AVERAGED EQUATIONS, AND THE SEPARATION OF SCALES IN TURBULENT FLOWS SO PHYSICS OF FLUIDS LA English DT Note ID NAVIER-STOKES EQUATIONS; FORMS AB Recent theoretical results on the behavior of high-frequency modes in two-dimensional incompressible turbulent flows are reported. These results show that high-frequency modes in the dissipation range are slaved to the low-frequency modes. The physical significance of the results is discussed, as well as its utilization for the numerical simulation of turbulent flows. (C) 1995 American Institute of Physics. C1 UNIV PARIS 11,ANAL NUMER LAB,F-91405 ORSAY,FRANCE. INDIANA UNIV,INST SCI COMP & APPL MATH,BLOOMINGTON,IN 47405. RP MANLEY, O (reprint author), US DOE,WASHINGTON,DC 20585, USA. RI Wang, Shouhong/G-5607-2012 OI Wang, Shouhong/0000-0003-2761-040X NR 15 TC 1 Z9 1 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JUL PY 1995 VL 7 IS 7 BP 1791 EP 1793 DI 10.1063/1.868496 PG 3 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RJ659 UT WOS:A1995RJ65900026 ER PT J AU PEDROSA, MA GARCIACORTES, I BRANAS, B BALBIN, R HIDALGO, C SCHMITZ, L TYNAN, G POSTZWICKER, A AF PEDROSA, MA GARCIACORTES, I BRANAS, B BALBIN, R HIDALGO, C SCHMITZ, L TYNAN, G POSTZWICKER, A TI ON THE INFLUENCE OF ATOMIC PHYSICS MECHANISMS ON EDGE PLASMA TURBULENCE IN THE TJ-I AND PRINCETON BETA-EXPERIMENT-MODIFIED TOKAMAKS SO PHYSICS OF PLASMAS LA English DT Letter C1 UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. PRINCETON UNIV,PLASMA PHYS LAB,PRINCETON,NJ 08543. RP PEDROSA, MA (reprint author), CIEMAT,EURATOM ASSOC,E-28040 MADRID,SPAIN. RI Garcia-Cortes, Isabel/H-3341-2015; Balbin, Rosa/F-8210-2010; Hidalgo, Carlos/H-6109-2015 OI Garcia-Cortes, Isabel/0000-0002-5223-391X; Balbin, Rosa/0000-0001-5231-1300; NR 14 TC 10 Z9 10 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2618 EP 2620 DI 10.1063/1.871225 PG 3 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500002 ER PT J AU QIAN, Q DAVIDSON, RC CHEN, CP AF QIAN, Q DAVIDSON, RC CHEN, CP TI CHAOTIC PARTICLE MOTION AND HALO FORMATION INDUCED BY CHARGE NONUNIFORMITIES IN AN INTENSE ION-BEAM PROPAGATING THROUGH A PERIODIC QUADRUPOLE FOCUSING FIELD SO PHYSICS OF PLASMAS LA English DT Article ID EMITTANCE; ENERGY C1 MIT,CTR PLASMA FUS,CAMBRIDGE,MA 02139. RP QIAN, Q (reprint author), PRINCETON UNIV,PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. NR 27 TC 19 Z9 19 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2674 EP 2686 DI 10.1063/1.871231 PG 13 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500009 ER PT J AU BEER, MA COWLEY, SC HAMMETT, GW AF BEER, MA COWLEY, SC HAMMETT, GW TI FIELD-ALIGNED COORDINATES FOR NONLINEAR SIMULATIONS OF TOKAMAK TURBULENCE SO PHYSICS OF PLASMAS LA English DT Article ID GRADIENT-DRIVEN TURBULENCE; POLOIDAL FLOW GENERATION; TOROIDAL PLASMAS; TFTR TOKAMAK; DRIFT WAVES; TRANSPORT; MODELS; SHEAR; FLUCTUATIONS; GEOMETRY RP BEER, MA (reprint author), PRINCETON UNIV, PLASMA PHYS LAB, POB 451, PRINCETON, NJ 08543 USA. RI Hammett, Gregory/D-1365-2011 OI Hammett, Gregory/0000-0003-1495-6647 NR 45 TC 187 Z9 188 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2687 EP 2700 DI 10.1063/1.871232 PG 14 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500010 ER PT J AU CARRERAS, BA LYNCH, VE GARCIA, L DIAMOND, PH AF CARRERAS, BA LYNCH, VE GARCIA, L DIAMOND, PH TI DYNAMICS OF 2ND-ORDER PHASE-TRANSITIONS IN RESISTIVE PRESSURE-GRADIENT-DRIVEN TURBULENCE SO PHYSICS OF PLASMAS LA English DT Article ID FLOW C1 UNIV CARLOS III,MADRID,SPAIN. UNIV CALIF SAN DIEGO,LA JOLLA,CA 92093. GEN ATOM CO,SAN DIEGO,CA 92186. RP CARRERAS, BA (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. RI Lynch, Vickie/J-4647-2012; Garcia, Luis/A-5344-2015 OI Lynch, Vickie/0000-0002-5836-7636; Garcia, Luis/0000-0002-0492-7466 NR 14 TC 44 Z9 44 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2744 EP 2752 DI 10.1063/1.871239 PG 9 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500017 ER PT J AU WANG, CY BATCHELOR, DB CARTER, MD JAEGER, EF STALLINGS, DC AF WANG, CY BATCHELOR, DB CARTER, MD JAEGER, EF STALLINGS, DC TI EFFECT OF ALFVEN RESONANCE ON LOW-FREQUENCY FAST-WAVE CURRENT DRIVE SO PHYSICS OF PLASMAS LA English DT Article ID PLASMA RP WANG, CY (reprint author), OAK RIDGE NATL LAB,DIV FUS ENERGY,OAK RIDGE,TN 37831, USA. NR 11 TC 15 Z9 15 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2760 EP 2764 DI 10.1063/1.871241 PG 5 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500019 ER PT J AU GLINSKY, ME AF GLINSKY, ME TI REGIMES OF SUPRATHERMAL ELECTRON-TRANSPORT SO PHYSICS OF PLASMAS LA English DT Article ID STEEP TEMPERATURE-GRADIENTS; LASER-PRODUCED PLASMAS; HEAT-TRANSPORT; ABSORPTION; DISTRIBUTIONS; BEAM RP GLINSKY, ME (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 33 TC 47 Z9 47 U1 1 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2796 EP 2806 DI 10.1063/1.871472 PG 11 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500024 ER PT J AU YOUNG, PE AF YOUNG, PE TI EXPERIMENTAL-OBSERVATION OF FILAMENTATION GROWTH IN LASER-PRODUCED PLASMAS SO PHYSICS OF PLASMAS LA English DT Article ID INDUCED SPATIAL INCOHERENCE; BEAM; HYDRODYNAMICS RP YOUNG, PE (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 18 TC 23 Z9 24 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2815 EP 2824 DI 10.1063/1.871179 PG 10 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500026 ER PT J AU YOUNG, PE HAMMER, JH WILKS, SC KRUER, WL AF YOUNG, PE HAMMER, JH WILKS, SC KRUER, WL TI LASER-BEAM PROPAGATION AND CHANNEL FORMATION IN UNDERDENSE PLASMAS SO PHYSICS OF PLASMAS LA English DT Article ID FILAMENTATION; INSTABILITIES; LIGHT RP YOUNG, PE (reprint author), LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. NR 25 TC 61 Z9 65 U1 1 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2825 EP 2834 DI 10.1063/1.871180 PG 10 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500027 ER PT J AU WANG, CY BATCHELOR, DB JAEGER, EF AF WANG, CY BATCHELOR, DB JAEGER, EF TI ON SPURIOUS MODES DOR FINITE LARMOR RADIUS MODELS IN THE ION-CYCLOTRON RANGE OF FREQUENCIES SO PHYSICS OF PLASMAS LA English DT Note RP WANG, CY (reprint author), OAK RIDGE NATL LAB,DIV FUS ENERGY,OAK RIDGE,TN 37831, USA. NR 5 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JUL PY 1995 VL 2 IS 7 BP 2863 EP 2865 DI 10.1063/1.871185 PG 3 WC Physics, Fluids & Plasmas SC Physics GA RG335 UT WOS:A1995RG33500032 ER PT J AU SWIFT, GW AF SWIFT, GW TI THERMOACOUSTIC ENGINES AND REFRIGERATORS SO PHYSICS TODAY LA English DT Article ID OSCILLATORY STOKES FLOWS; TRANSITION; TURBULENCE; STACKS RP SWIFT, GW (reprint author), LOS ALAMOS NATL LAB,CONDENSED MATTER & THERMAL PHYS GRP,LOS ALAMOS,NM 87545, USA. NR 23 TC 90 Z9 92 U1 1 U2 14 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JUL PY 1995 VL 48 IS 7 BP 22 EP 28 DI 10.1063/1.881466 PG 7 WC Physics, Multidisciplinary SC Physics GA RG350 UT WOS:A1995RG35000007 ER PT J AU BALDERFROID, K SYMONS, TJM AF BALDERFROID, K SYMONS, TJM TI NITSCHKE,JOACHIM,MICHAEL - OBITUARY SO PHYSICS TODAY LA English DT Item About an Individual RP BALDERFROID, K (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JUL PY 1995 VL 48 IS 7 BP 75 EP 75 DI 10.1063/1.2808111 PG 1 WC Physics, Multidisciplinary SC Physics GA RG350 UT WOS:A1995RG35000018 ER PT J AU STAPP, HP AF STAPP, HP TI PARAPSYCHOLOGICAL-REVIEW-A - REPLY SO PHYSICS TODAY LA English DT Letter RP STAPP, HP (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JUL PY 1995 VL 48 IS 7 BP 78 EP 79 PG 2 WC Physics, Multidisciplinary SC Physics GA RG350 UT WOS:A1995RG35000022 ER PT J AU JACOBSEN, F LYNN, K AF JACOBSEN, F LYNN, K TI POSITRONS PROBE DEFECTS SO PHYSICS WORLD LA English DT Article RP JACOBSEN, F (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-8585 J9 PHYS WORLD JI Phys. World PD JUL PY 1995 VL 8 IS 7 BP 23 EP 24 PG 2 WC Physics, Multidisciplinary SC Physics GA RK538 UT WOS:A1995RK53800033 ER PT J AU DEHMER, P AF DEHMER, P TI H-2 - LIFTING THE MOLECULAR CLOUD SO PHYSICS WORLD LA English DT Article RP DEHMER, P (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-8585 J9 PHYS WORLD JI Phys. World PD JUL PY 1995 VL 8 IS 7 BP 27 EP 31 PG 5 WC Physics, Multidisciplinary SC Physics GA RK538 UT WOS:A1995RK53800036 ER PT J AU MIZUTANI, F DONG, JG YANG, SF AF MIZUTANI, F DONG, JG YANG, SF TI EFFECT OF PH ON CO2-ACTIVATED 1-AMINOCYCLOPROPANE-1-CARBOXYLATE OXIDASE ACTIVITY FROM APPLE FRUIT SO PHYTOCHEMISTRY LA English DT Article DE MALUS DOMESTICA; ROSACEAE; APPLE FRUIT; ACC OXIDASE; PH EFFECT; CO2 ACTIVATION; KINETIC PARAMETERS ID ETHYLENE-FORMING ENZYME; CARBON-DIOXIDE; ACID; PURIFICATION; ACTIVATION; CONVERSION; TISSUES; PLANTS AB 1-Aminocyclopropane-1-carboxylate(ACC) oxidase, which converts ACC to ethylene, requires CO2 as an activator for its activity, Using crude extracts of apple fruit, we examined the effect of pH on CO2-activated ACC oxidase activity. Since gaseous CO2 lowered pH of the assay media, the final pH of the media was either checked after the reaction, or the pH was maintained by employing CO2-bicarbonate buffer. At ambient CO2, the optimum pH was 7.4; at this pH, maximal activity was attained with 4% atmospheric CO2 as previously reported. As the concentration of CO2 was increased, the optimum pH gradually shifted toward acidic side. At 20% CO2, the optimum pH was around 6.7, Thus, the concentration of CO2 to elicit maximal enzyme activity varied greatly with pH. Dependence of the enzyme activity on CO2 concentration at various pHs ranging from 6.0 to 7.5 was investigated. While the affinity of the enzyme for CO2 decreased as the pH decreased, V-max increased as the pH decreased, reaching a peak activity at pH 6.7. These results indicate that CO2 affects ACC oxidase activity not only by serving directly as an ACC oxidase activator but also by modifying the tissue pH which in turn influences the enzyme activity. Furthermore, some enzyme kinetic parameters for various substrates and CO2 were determined. C1 LAWRENCE LIVERMORE NATL LAB,DEPT VEGETABLE CROPS,MANN LAB,DAVIS,CA 95616. NR 21 TC 17 Z9 18 U1 1 U2 12 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0031-9422 J9 PHYTOCHEMISTRY JI Phytochemistry PD JUL PY 1995 VL 39 IS 4 BP 751 EP 755 DI 10.1016/0031-9422(95)00094-N PG 5 WC Biochemistry & Molecular Biology; Plant Sciences SC Biochemistry & Molecular Biology; Plant Sciences GA RK524 UT WOS:A1995RK52400002 ER PT J AU DEBRUIJN, FJ JING, Y DAZZO, FB AF DEBRUIJN, FJ JING, Y DAZZO, FB TI POTENTIAL AND PITFALLS OF TRYING TO EXTEND SYMBIOTIC INTERACTIONS OF NITROGEN-FIXING ORGANISMS TO PRESENTLY NONNODULATED PLANTS, SUCH AS RICE SO PLANT AND SOIL LA English DT Article; Proceedings Paper CT Symposium on Biological Nitrogen Fixation for Sustainable Agriculture, at the 15th Congress of Soil Science CY 1994 CL ACAPULCO, MEXICO DE ENDOPHYTIC MICROBES; ENDO-SYMBIOSIS; RHIZOBIUM; RICE; ROOT HYPERTROPHIES; ULTRASTRUCTURE ID RHIZOBIUM-MELILOTI; GENE-EXPRESSION; SESBANIA-ROSTRATA; FIXATION; ROOTS; NODULES; LEGHEMOGLOBIN; SEEDLINGS; BACTERIA; PROMOTER AB It has been a long-standing goal in the field of biological nitrogen fixation to extend nitrogen-fixing symbioses to presently non-nodulated cereal plants, such as rice. A number of researchers have recently described the induction of ''nodule-like'' structures on the roots of cereals primarily by rhizobia, in either the presence or absence of plant cell-wall-degrading enzymes or plant hormones. We briefly review this research and discuss the potential problems associated with the introduction of nitrogen-fixing microbes in novel physiological environments, such as rice roots. The results of experiments carried out in China on the induction of ''nodule-like'' structures on rice roots by rhizobia are highlighted. In addition, we present preliminary results of a series of experiments designed to repeat and evaluate these results using a variety of microscopic techniques and molecular genetic approaches. C1 MICHIGAN STATE UNIV,DEPT MICROBIOL,E LANSING,MI 48824. MICHIGAN STATE UNIV,NSF,CTR MICROBIAL ECOL,E LANSING,MI 48824. CHINESE ACAD SCI,INST BOT,BEIJING,PEOPLES R CHINA. RP DEBRUIJN, FJ (reprint author), MICHIGAN STATE UNIV,US DOE,PLANT RES LAB,E LANSING,MI 48824, USA. NR 60 TC 26 Z9 26 U1 3 U2 7 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0032-079X J9 PLANT SOIL JI Plant Soil PD JUL PY 1995 VL 174 IS 1-2 BP 225 EP 240 PG 16 WC Agronomy; Plant Sciences; Soil Science SC Agriculture; Plant Sciences GA RU936 UT WOS:A1995RU93600012 ER PT J AU NIE, GY HENDRIX, DL WEBBER, AN KIMBALL, BA LONG, SP AF NIE, GY HENDRIX, DL WEBBER, AN KIMBALL, BA LONG, SP TI INCREASED ACCUMULATION OF CARBOHYDRATES AND DECREASED PHOTOSYNTHETIC GENE TRANSCRIPT LEVELS IN WHEAT GROWN AT AN ELEVATED CO2 CONCENTRATION IN THE FIELD SO PLANT PHYSIOLOGY LA English DT Article ID RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE-OXYGENASE; HIGH ATMOSPHERIC CO2; LONG-TERM EXPOSURE; MESSENGER-RNA; CARBON-DIOXIDE; ACCLIMATION; EXPRESSION; NUCLEAR; LEAVES; STARCH AB Repression of photosynthetic genes by increased soluble carbohydrate concentrations may explain acclimation of photosynthesis to elevated CO2 concentration. This hypothesis was examined in a field crop of spring wheat (Triticum aestivum L.) grown at both ambient (approximately 360 mu mol mol(-1)) and elevated (550 mu mol mol(-1)) atmospheric CO2 concentrations using free-air CO2 enrichment at Maricopa, Arizona. The correspondence of steady-state levels of mRNA transcripts (coding for the 83-kD photosystem I apoprotein, sedoheptulose-1,7-bisphosphatase, phosphoribulokinase, phosphoglycerokinase, and the large and small subunits of ribulose-1,5-bisphosphate carboxylase/oxygenase) with leaf carbohydrate concentrations (glucose-6-phosphate, glucose, fructose, sucrose, fructans, and starch) was examined at different stages of crop and leaf development and through the diurnal cycle. Overall only a weak correspondence between increased soluble carbohydrate concentrations and decreased levels for nuclear gene transcripts was found. The difference in soluble carbohydrate concentration between leaves grown at elevated and current ambient CO2 concentrations diminished with crop development, whereas the difference in transcript levels increased. In the flag leaf, soluble carbohydrate concentrations declined markedly with the onset of grain filling; yet transcript levels also declined. The results suggest that, whereas the hypothesis may hold well in model laboratory systems, many other factors modified its significance in this field wheat crop. C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,DIV BIOSYST & PROC SCI,UPTON,NY 11973. USDA ARS,WESTERN COTTON RES LAB,PHOENIX,AZ 85040. USDA ARS,US WATER CONSERVAT LAB,PHOENIX,AZ 85040. ARIZONA STATE UNIV,DEPT BOT,TEMPE,AZ 85287. ARIZONA STATE UNIV,CTR STUDY EARLY EVENTS PHOTOSYNTHESIS,TEMPE,AZ 85287. UNIV ESSEX,DEPT BIOL,COLCHESTER CO4 3SQ,ESSEX,ENGLAND. RI Long, Stephen/A-2488-2008 OI Long, Stephen/0000-0002-8501-7164 NR 52 TC 120 Z9 128 U1 0 U2 14 PU AMER SOC PLANT PHYSIOLOGISTS PI ROCKVILLE PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 SN 0032-0889 J9 PLANT PHYSIOL JI Plant Physiol. PD JUL PY 1995 VL 108 IS 3 BP 975 EP 983 PG 9 WC Plant Sciences SC Plant Sciences GA RJ235 UT WOS:A1995RJ23500013 ER PT J AU PENG, LW FLOWER, WL HENCKEN, KR JOHNSEN, HA RENZI, RF FRENCH, NB AF PENG, LW FLOWER, WL HENCKEN, KR JOHNSEN, HA RENZI, RF FRENCH, NB TI A LASER-BASED TECHNIQUE FOR CONTINUOUSLY MONITORING METAL EMISSIONS FROM THERMAL WASTE TREATMENT UNITS SO PROCESS CONTROL AND QUALITY LA English DT Article DE PLASMAS; LASER SPECTROSCOPY; ONLINE ANALYSIS; THERMAL WASTE; METALS AB In this paper, the development of an advanced continuous emissions monitor for measuring metals contained in the effluent from thermal waste treatment units is described. The monitor is based on a measurement technique known as LAser-Spark-Spectroscopy (LASS), in which a focused pulsed laser is used to rapidly heat material contained in the focal region, producing a plasma (or laser ''spark'') that contains excited-state atoms and ions. Spectrally resolved measurements of optical emission from the plasma are used to identify and quantify the elements that are present. LASS can measure atomic species embedded in solid or liquid aerosols, in addition to vapor-phase species. Thus, the technique is well-suited for measuring metals in thermal-waste-treatment effluent, in which a large percentage of the metals are found in aerosol form. Experimental results presented here demonstrate that the LASS technique can be used to measure the 11 metals regulated under the Clean Air Act at levels typically permitted in the effluent from thermal waste treatment facilities. Measured detectability limits for these metals range from less than 0.1 mu g per standard m(3) (mu g scm(-1)) for beryllium to 250 mu g scm(-1) for lead. Also discussed are design considerations for a rugged, fieldable monitoring probe. A field test on a pilot-scale joule-melter has been conducted, and initial results from this test are presented. RP PENG, LW (reprint author), SANDIA NATL LABS,LIVERMORE,CA 94551, USA. NR 4 TC 30 Z9 30 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0924-3089 J9 PROCESS CONTR QUAL JI Process Control Qual. PD JUL PY 1995 VL 7 IS 1 BP 39 EP 49 PG 11 WC Engineering, Chemical; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RK592 UT WOS:A1995RK59200006 ER PT J AU LYNCH, GJ AF LYNCH, GJ TI USE OF ONLINE ION CHROMATOGRAPHY FOR HIGH-TEMPERATURE AND HIGH-PRESSURE REACTION STUDIES SO PROCESS CONTROL AND QUALITY LA English DT Article DE ONLINE ANALYSIS; ION CHROMATOGRAPHY; CHEMICAL LOSS HALF-LIFE; FLOW-INJECTION ANALYSIS; QUALITY CONTROL; SAMPLING; AUTOCLAVE AB This paper describes the use of on-line ion chromatography as a tool for chemical reaction studies in small-volume systems. The technique was used to study chemical behavior in a high-temperature and high-pressure autoclave system. A dual analyzer, multi-channel on-line ion chromatograph was configured to automate the sampling and analysis of the chemistry in the test. The analytical channels were set up for analysis of inorganic anions, monovalent cations, conductivity, and pH. Conductivity and pH were measured by using the ion chromatograph as a flow-injection analyzer. The use of the ion chromatograph provides significant advantages over conventional sampling and analysis techniques. These advantages include: (1) a significant reduction in sample volume (by about a factor of 10 for this testing) which results in much less impact of sampling on the process being studied; (2) a closed sampling system that protects air-or light-sensitive analytes from breakdown in the sampling and analysis process; (3) around-the-clock test performance combined with automatic calibration and quality control checking capabilities due to the automated nature of the technique; and (4) detection and tracking of reaction products or unexpected contaminants. The method used to correct the measured concentrations of the chemicals for the effects of sampling and the method used for the calculation of control chemical loss half-lives are presented. A limited evaluation of the flow-injection analysis methods for conductivity and pH is also provided. RP LYNCH, GJ (reprint author), US DOE,WESTINGHOUSE ELECT CORP,BETTIS ATOM POWER LAB,PITTSBURGH,PA 15122, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0924-3089 J9 PROCESS CONTR QUAL JI Process Control Qual. PD JUL PY 1995 VL 7 IS 1 BP 51 EP 61 PG 11 WC Engineering, Chemical; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RK592 UT WOS:A1995RK59200007 ER PT J AU BURNS, RS TURNER, JH AF BURNS, RS TURNER, JH TI METHOD USED TO ESTIMATE SCREENING-LEVEL TOTAL FAILURE PROBABILITY FOR HUMAN ERROR EVENTS SO PROCESS SAFETY PROGRESS LA English DT Article; Proceedings Paper CT AIChE Summer National Meeting CY AUG 15, 1994 CL DENVER, CO SP Amer Inst Chem Engineers AB This document briefly describes the method used to estimate a screening value for the Total Failure Probability (F-T) of human error events that are identified in the fault trees which describe potential liquid UF6 release accidents at two U.S. Gaseous Diffusion Plants. A discussion is provided of the assumptions, limitations, and overall logic of the F-T assignment method, and a descriptions is presented of how the method is employed. The description herein, and more completely in Burns and Turner [1], presents the screening technique* used to quantify human errors in the accident analysis portion of the Gaseous Diffusoin Plant Safety Analysis Report Upgrade Program. RP BURNS, RS (reprint author), OAK RIDGE NATL LAB,DIV ENGN TECHNOL,OAK RIDGE,TN 37831, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER INST CHEMICAL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1066-8527 J9 PROCESS SAF PROG JI Process Saf. Prog. PD JUL PY 1995 VL 14 IS 3 BP 212 EP 214 DI 10.1002/prs.680140309 PG 3 WC Engineering, Chemical SC Engineering GA RN860 UT WOS:A1995RN86000008 ER PT J AU GREEN, MA EMERY, K BUCHER, K KING, DL AF GREEN, MA EMERY, K BUCHER, K KING, DL TI SOLAR-CELL EFFICIENCY TABLES (VERSION-6) SO PROGRESS IN PHOTOVOLTAICS LA English DT Note AB Updated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and several new entries since January 1995 are briefly described. C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. FRAUNHOFER INST SOLAR ENERGY SYST,D-79100 FREIBURG,GERMANY. SANDIA NATL LABS,DEPT 6219,ALBUQUERQUE,NM 87123. RP GREEN, MA (reprint author), UNIV NEW S WALES,CTR PHOTOVAOLTA DEVICES & SYST,SYDNEY,NSW 2052,AUSTRALIA. NR 5 TC 15 Z9 15 U1 2 U2 10 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1062-7995 J9 PROG PHOTOVOLTAICS JI Prog. Photovoltaics PD JUL-AUG PY 1995 VL 3 IS 4 BP 229 EP 233 DI 10.1002/pip.4670030403 PG 5 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA RR829 UT WOS:A1995RR82900003 ER PT J AU TUTTLE, JR CONTRERAS, MA GILLESPIE, TJ RAMANATHAN, KR TENNANT, AL KEANE, J GABOR, AM NOUFI, R AF TUTTLE, JR CONTRERAS, MA GILLESPIE, TJ RAMANATHAN, KR TENNANT, AL KEANE, J GABOR, AM NOUFI, R TI 17.1-PERCENT EFFICIENT CU(IN,GA)SE-2- BASED THIN-FILM SOLAR-CELL SO PROGRESS IN PHOTOVOLTAICS LA English DT Note AB We report a world-record total-area efficiency of 17.1% for a polycrystalline thin-film Cu(In,Ga)Se-2-based photovoltaic solar cell. The incorporation of Ga to raise the absorber bandgap has been accomplished successfully and in such a manner that an open-circuit voltage of 654 mV and a fill factor of greater than 77% have been achieved. We describe briefly the deposition process, the device structure, and the device performance characteristics. C1 MARTIN MARIETTA TECHNOL INC,DENVER,CO 80201. RP TUTTLE, JR (reprint author), NATL RENEWABLE ENERGY LAB,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 11 TC 59 Z9 59 U1 0 U2 6 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1062-7995 J9 PROG PHOTOVOLTAICS JI Prog. Photovoltaics PD JUL-AUG PY 1995 VL 3 IS 4 BP 235 EP 238 DI 10.1002/pip.4670030404 PG 4 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA RR829 UT WOS:A1995RR82900004 ER PT J AU WILMANNS, M EISENBERG, D AF WILMANNS, M EISENBERG, D TI INVERSE PROTEIN-FOLDING BY THE RESIDUE PAIR PREFERENCE PROFILE METHOD - ESTIMATING THE CORRECTNESS OF ALIGNMENTS OF STRUCTURALLY COMPATIBLE SEQUENCES SO PROTEIN ENGINEERING LA English DT Article DE ALIGNMENT; HISA; INVERSE PROTEIN FOLDING; PAIR POTENTIAL; PROFILE ID 3-DIMENSIONAL STRUCTURES; GLOBULAR-PROTEINS; MEAN FORCE; PREDICTION; IDENTIFICATION; POTENTIALS; RECOGNITION; MODELS AB The residue pair preference profile (R3P) method is an inverse folding method that combines environmental profiles and pair preference profiles. The method uses statistical preferences for residue pairs which score the likelihood of finding a profiled residue to be paired with a residue within its local environment, All pairs are characterized by their dihedral angles, secondary structure and number of neighboring residues as a function of residue type. Each residue pair preference is expressed for all 20 amino acids of the profiled residue and is weighted by the compatibility of the environment residue with its own local environment. The R3P method produces an initial profile-sequence alignment which is then refined by converting the initial profile into a profile of a target sequence threaded into the structure of the initial profile. We have tested this method by evaluating alignments of sequences with known 3-D structures using structural superposition alignments as reference. R3P-sequence alignments are greater than or equal to 50% correct on average for sequences whose 3-D structure pairs superimpose with an r.m.s. deviation of less than or equal to 1.97 Angstrom. The average improvement in correctness during this iterative refinement is 14%. The R3P-sequence alignments are compared with sequence-sequence and 3-D profile-sequence alignments. When all three methods are combined, on average greater than or equal to 50% of the alignments are correct for pairs of 3-D structures that superimpose within 2.12 Angstrom. A 3-D model of HisA is predicted with the combined method. C1 UNIV CALIF LOS ANGELES,INST MOLEC BIOL,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,US DOE,STRUCT BIOL & MOLEC MED LAB,LOS ANGELES,CA 90024. OI Wilmanns, Matthias/0000-0002-4643-5435 NR 32 TC 23 Z9 23 U1 0 U2 1 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0269-2139 J9 PROTEIN ENG JI Protein Eng. PD JUL PY 1995 VL 8 IS 7 BP 627 EP 639 DI 10.1093/protein/8.7.627 PG 13 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology GA TD840 UT WOS:A1995TD84000002 PM 8577692 ER PT J AU BARNABAS, F CERNY, E JONAH, CD MEISEL, D SAUER, MC AF BARNABAS, F CERNY, E JONAH, CD MEISEL, D SAUER, MC TI REACTION OF H-ATOMS WITH CHELATORS IN HIGHLY BASIC SOLUTION - H-2 PRODUCTION IN HIGH-LEVEL LIQUID WASTE SIMULANTS SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article AB The rate constants for hydrogen abstraction by H from ethylene-diamine tetracetic acid (EDTA), N-(2-hydroxyethyl)-ethylenediaminetriace acid (HEDTA), nitrilotriacetic acid (NTA), iminodiacetic acid (IDA), glycolic acid and citric acid were measured at pH 13. The predominant product of these reactions is H-2. The rate constants obtained are more than an order of magnitude larger than the literature rates that had been measured at pH 1. These measurements are of significance for understanding the radiolytic production of H-2 in nuclear waste storage tanks. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 12 TC 3 Z9 3 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0146-5724 J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD JUL PY 1995 VL 46 IS 1 BP 57 EP 60 DI 10.1016/0969-806X(94)00112-W PG 4 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA RE700 UT WOS:A1995RE70000010 ER PT J AU SHKROB, IA TRIFUNAC, AD AF SHKROB, IA TRIFUNAC, AD TI PULSE-RADIOLYSIS OF ALKANES - A TIME-RESOLVED EPR STUDY .1. ALKYL RADICALS SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article ID ELECTRON-SPIN-RESONANCE; POLYMER-MODEL COMPOUNDS; IRRADIATED POLYETHYLENE; CROSS-LINKING; CRYSTALLINE ALKANES; IONIZING-RADIATION; GAMMA-IRRADIATION; SINGLE-CRYSTALS; NMR; POLARIZATION AB Time-resolved EPR was applied to detect short-lived alkyl radicals in pulse radiolysis of liquid alkanes. Two problems were addressed: (i) the mechanism of radical formation and (ii) the mechanism of chemically-induced spin polarization In these radicals. (i) The ratio of yields of penultimate and interior radicals in n-alkanes at the instant of their generation was found to be approximate to 1.25 times greater than the statistical quantity. This higher-than-statistical production of penultimate radicals indicates that the proton transfer reaction involving excited radical cations must be a prevailing route of radical generation. The relative yields of hydrogen abstraction and fragmentation for various branched alkanes are estimated. It is concluded that the fragmentation occurs prior to the formation of radicals in an excited precursor species. (ii) The analysis of spin-echo kinetics in n-alkanes suggests that the alkyl radicals gain the emissive polarization in spur reactions. This initial polarization increases with shortening of the aliphatic chain. We suggest that the origin of this polarization is the ST mechanism operating in the pairs of alkyl radicals and hydrogen atoms generated in dissociation of excited alkane molecules. It is also found that a long-chain structure of alkyl radicals results in much higher rate of Heisenberg spin exchange relative to the recombination rate (up to 30 times). That suggests prominent steric effects in recombination or the occurrence of through-chain electron exchange. The significance of these results in the context of cross-linking in polyethylene and higher paraffins is discussed. RP SHKROB, IA (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 72 TC 9 Z9 9 U1 2 U2 12 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0146-5724 J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD JUL PY 1995 VL 46 IS 1 BP 83 EP 96 DI 10.1016/0969-806X(94)00118-4 PG 14 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA RE700 UT WOS:A1995RE70000014 ER PT J AU SHKROB, IA TRIFUNAC, AD AF SHKROB, IA TRIFUNAC, AD TI PULSE-RADIOLYSIS OF ALKANES - A TIME-RESOLVED EPR STUDY .2. PHENOLIC ADDITIVES SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article ID DYNAMIC ELECTRON POLARIZATION; SPIN POLARIZATION; WATER RADIOLYSIS; D-ATOMS; CIDEP; CYCLOHEXANE; CHEMISTRY; RESONANCE; RADICALS AB Time-resolved spin-echo-detected EPR was applied to observe transient radicals formed in pulse radiolysis of phenols, ArOH, in alkanes at 290 K. It is demonstrated that phenoxy radicals ArO. are produced in dissociative capture of electrons, alkane holes and via reaction of phenols with hydrogen atoms. Another product of the latter reaction is cyclohexadienyl-type radical (HArOH)-Ar-.. H atoms add exclusively to the para-position of phenols. A rapid multi-step transfer of singlet spin correlation from the geminate radical ion pairs to the pairs involving ArO. and (HArOH)-Ar-. radicals is responsible for the early-time A/E polarization in these species. RP SHKROB, IA (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 29 TC 3 Z9 3 U1 2 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0146-5724 J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD JUL PY 1995 VL 46 IS 1 BP 97 EP 104 DI 10.1016/0969-806X(94)00119-5 PG 8 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA RE700 UT WOS:A1995RE70000015 ER PT J AU WELLER, RE BUSCHBOM, RL PARK, JF DAGLE, GE RAGAN, HA AF WELLER, RE BUSCHBOM, RL PARK, JF DAGLE, GE RAGAN, HA TI HEMATOLOGICAL EFFECTS OF INHALED PLUTONIUM DIOXIDE IN BEAGLES SO RADIATION RESEARCH LA English DT Article AB A life-span study indicated that plutonium activity in the thoracic lymph nodes is a contributor to development of lymphopenia in beagles exposed to (PuO2)-Pu-239. Significant lymphopenia was found in 67 (58%) beagles given a single nose-only exposure to (PuO2)-Pu-239 to result in mean initial lung depositions ranging from 0.69 to 213.3 kBq. Lymphoid atrophy and sclerosis of the thoracic lymph nodes and lymphopenia were observed in exposure-level groups with initial lung depositions greater than or equal to 2.5 kBq. Those dogs with final plutonium concentrations in the thoracic lymph nodes greater than or equal to 0.4 kBq/g and dose rates greater than or equal to 0.01 Gy/day developed lymphopenia. Marked differences existed between chronically lymphopenic dogs and intermittently lymphopenic dogs with regard to initial lung deposition, time to lymphopenic events and absolute lymphocyte concentrations. Linear regression analysis revealed moderate correlation between reduction in lymphocyte values and initial lung deposition, in both magnitude and time of appearance after exposure. Cumulative dose and dose rate appeared to act together to produce initial effects on lymphocyte populations, while dose rate alone appeared to be responsible for the maintenance and subsequent cycles of lymphopenia seen over the life span. No primary tumors were associated with the thoracic lymph nodes in this study, although 70% of the lymphopenic dogs developed lung tumors. (C) 1995 by Radiation Research Society RP WELLER, RE (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 28 TC 5 Z9 5 U1 0 U2 2 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD JUL PY 1995 VL 143 IS 1 BP 69 EP 76 DI 10.2307/3578927 PG 8 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA RG265 UT WOS:A1995RG26500009 PM 7597146 ER PT J AU WIELOPOLSKI, L AF WIELOPOLSKI, L TI THE EFFECTS OF DOSE AND RADIATION QUALITY ON THE SHAPE AND POWER SATURATION OF THE EPR SIGNAL IN ALANINE - RESPONSE SO RADIATION RESEARCH LA English DT Letter RP WIELOPOLSKI, L (reprint author), BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973, USA. NR 4 TC 0 Z9 0 U1 0 U2 1 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD JUL PY 1995 VL 143 IS 1 BP 114 EP 115 DI 10.2307/3578936 PG 2 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA RG265 UT WOS:A1995RG26500018 ER PT J AU AHMADBITAR, R MOUTINHO, H ABULFOTUH, F KAZMERSKI, L AF AHMADBITAR, R MOUTINHO, H ABULFOTUH, F KAZMERSKI, L TI ANALYSES OF PHOTOLUMINESCENCE SPECTRA OF CDTE THIN-FILMS AT DIFFERENT TEMPERATURES SO RENEWABLE ENERGY LA English DT Article; Proceedings Paper CT International Conference on Solar Electricity - Photovoltaics and Wind CY OCT 02-07, 1994 CL CAIRO, EGYPT SP NREL, Natl Renewable Energy Lab, Golden, Colorado, US, WREN ID HETEROJUNCTION SOLAR-CELLS; HIGH-PURITY CDTE; PHOTO-LUMINESCENCE; CADMIUM TELLURIDE; GROWTH AB Photoluminescence (PL) spectra of thin films of CdTe grown on glass by evaporation have been obtained at different laser powers and at different temperatures near and to the red end of the band gap. We suggest an analytical method which deconvolutes the PL spectrum into peaks corresponding to the main electronic transitions. Each spectrum was analytically fitted to eight Gaussian peaks. Gaussian peaks have been found to give the best fit to the spectrum. The quality of the fit can be checked by the fact that the positions and the widths of the eight peaks of each PL spectrum should agree with the fit to another spectrum taken at a different excitation power or a different sample temperature. These results may help to identify these peaks and suggest a model for the shallow electrically active states between the conduction and valance bands of CdTe thin films. C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. RP AHMADBITAR, R (reprint author), UNIV JORDAN,DEPT PHYS,AMMAN,JORDAN. NR 21 TC 8 Z9 8 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0960-1481 J9 RENEW ENERG JI Renew. Energy PD JUL-SEP PY 1995 VL 6 IS 5-6 BP 553 EP 558 DI 10.1016/0960-1481(95)00040-Q PG 6 WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels SC Science & Technology - Other Topics; Energy & Fuels GA RW955 UT WOS:A1995RW95500017 ER PT J AU KISHORE, R MOUTINHO, HR SOPORI, BL AF KISHORE, R MOUTINHO, HR SOPORI, BL TI ATOMIC-FORCE MICROSCOPY STUDY OF FG-ANNEALED AND PECVD SILICON-NITRIDE AR-COATED SILICON SOLAR-CELLS SO RENEWABLE ENERGY LA English DT Article; Proceedings Paper CT International Conference on Solar Electricity - Photovoltaics and Wind CY OCT 02-07, 1994 CL CAIRO, EGYPT SP NREL, Natl Renewable Energy Lab, Golden, Colorado, US, WREN ID COATINGS AB Atomic force microscopy has been used to study the surface structure and roughness of PECVD silicon nitride coated silicon solar cells. The surface roughness increases in some areas of the solar cells after forming gas annealing. It may be one of the reasons for better light absorption on the surface of the solar cells resulting in better solar cell performance. C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 13 TC 4 Z9 4 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0960-1481 J9 RENEW ENERG JI Renew. Energy PD JUL-SEP PY 1995 VL 6 IS 5-6 BP 589 EP 591 DI 10.1016/0960-1481(95)00054-N PG 3 WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels SC Science & Technology - Other Topics; Energy & Fuels GA RW955 UT WOS:A1995RW95500022 ER PT J AU VANHULSTEYN, DB PETSCHEK, AG FLYNN, ER OVERTON, WC AF VANHULSTEYN, DB PETSCHEK, AG FLYNN, ER OVERTON, WC TI SUPERCONDUCTOR IMAGING SURFACE MAGNETOMETRY SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB The presence of superconducting surfaces in the vicinity of current sources may be interpreted in terms of image theory. This concept has both experimental and theoretical practicality. Experimentally, sensing coils magnetic detection, when placed near such surfaces, perform in a gradiometric fashion. Iri order to explain this effect explicitly, a theoretical treatment of the magnetic fields in the presence of superconducting surfaces and coils is presented. Expressions are derived for planar and spherical geometries that approximate practical experimental situations. These expressions may be used to predict the expected gradiometric response of a coil as a function of the positions of the source and coil relative to the surface. (C) 1995 American Institute of Physics. RP VANHULSTEYN, DB (reprint author), LOS ALAMOS NATL LAB,DIV PHYS,POB 1663,LOS ALAMOS,NM 87544, USA. NR 9 TC 13 Z9 13 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUL PY 1995 VL 66 IS 7 BP 3777 EP 3784 DI 10.1063/1.1145437 PG 8 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA RK224 UT WOS:A1995RK22400010 ER PT J AU TSANG, T RADEKA, V AF TSANG, T RADEKA, V TI ELECTROOPTICAL MODULATORS IN PARTICLE DETECTORS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID INTENSITY MODULATOR; WAVEGUIDE DEVICES; DC DRIFT AB Results of an investigation to minimize the local electronics in particle detectors using electro-optical intensity modulators are reported. The electrical charge signals from a particle detector are first applied to a low noise electronic charge-sensitive preamplifier and the resulting signal charges are converted into optical signals using an integrated Ti:LNbO(3) Mach-Zehnder interferometric optical modulator. By driving the optical modulator with a low noise diode-pumped Nd:YAG laser at a wavelength of 1.3 mu m and detecting the output signals using a fast pulse shaping technique, the charge output of a particle detector can be measured at high rates with high accuracy up to 3 decades of dynamic range. The performance characteristics of such a detector signal transfer scheme, using first a single channel optical modulator and then a 16-channel integrated optical modulator array, is reported. Using the charge output from a multiwire proportional chamber, this electrical charge to optical signal transfer scheme is compared to the conventional particle detection technique. Effects of radiation dose on the optical modulator are also presented. Finally, the implication of using such an optical technique is discussed. (C) 1995 American Institute of Physics. RP TSANG, T (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 25 TC 5 Z9 5 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUL PY 1995 VL 66 IS 7 BP 3844 EP 3854 DI 10.1063/1.1145447 PG 11 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA RK224 UT WOS:A1995RK22400020 ER PT J AU PAOLONI, FJ BROWN, IG AF PAOLONI, FJ BROWN, IG TI SOME OBSERVATIONS OF THE EFFECT OF MAGNETIC-FIELD AND ARC CURRENT ON THE VACUUM ARE ION CHARGE-STATE DISTRIBUTION SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB The charge state distribution of ions produced in a vacuum are plasma has been investigated for cathode materials Ti, Sn, and Pt as a function of are current and magnetic field strength in which the are is located. A vacuum are ion source was used in combination with a time-of-flight charge state diagnostic. It was found that the are impedance and the ion charge states increase substantially with magnetic field strength. While there was effectively no variation of charge state distribution with are current for the case of zero applied field, there was a significant increase in the charge states with are current when the applied magnetic field was 1 kG. (C) 1995 American Institute of Physics. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP PAOLONI, FJ (reprint author), UNIV WOLLONGONG,DEPT ELECT & COMP ENGN,WOLLONGONG,NSW 2522,AUSTRALIA. NR 14 TC 32 Z9 33 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUL PY 1995 VL 66 IS 7 BP 3855 EP 3858 DI 10.1063/1.1145448 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA RK224 UT WOS:A1995RK22400021 ER PT J AU INOUE, T MIYAMOTO, K MIZUNO, M OKUMURA, Y OHARA, Y ACKERMAN, GD CHAN, CF COOPER, WS KWAN, JW VELLA, MC AF INOUE, T MIYAMOTO, K MIZUNO, M OKUMURA, Y OHARA, Y ACKERMAN, GD CHAN, CF COOPER, WS KWAN, JW VELLA, MC TI A MERGING PREACCELERATOR FOR HIGH-CURRENT H- ION-BEAMS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB The high power ion beams used in the next generation thermonuclear fusion reactors require high current negative ion beams accelerated to high energy, with high efficiency. One way to meet these requirements is to merge multiple low current density H- beamlets into a single high current beam. The feasibility of a high current merging preaccelerator was demonstrated in this experiment by merging 19 beamlets of H- ions distributed over a circular area 80 mm in diameter from a Japan Atomic Energy Research Institute negative ion source. H- ions were extracted at a current density exceeding 10 mA/cm(2) at the ion source which operates at 0.13 Pa (1 m Torr), with a low are power density (70 V x 250 A). Spherically curved grids (with built-in magnetic electron suppression) were used in the preaccelerator to focus the extracted beamlets into a single 104 mA, 100 keV beam. The merged beam has a diameter of 23 mm and a converging angle of +/-30 mrad at the beam envelope. The rms emittance of the 104 mA merging beam was 1.00 pi mrad cm, which is a condition acceptable to the electrostatic quadropole accelerator for further acceleration. (C) 1995 American Institute of Physics. C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP INOUE, T (reprint author), JAPAN ATOM ENERGY RES INST,NAKA,IBARAKI 31101,JAPAN. NR 10 TC 29 Z9 29 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUL PY 1995 VL 66 IS 7 BP 3859 EP 3863 DI 10.1063/1.1145449 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA RK224 UT WOS:A1995RK22400022 ER PT J AU KWAN, JW ACKERMAN, GD CHAN, CF COOPER, WS DEVRIES, GJ STEELE, WF STUART, ME VELLA, MC WELLS, RP INOUE, T OKUMURA, Y MIZUNO, M AF KWAN, JW ACKERMAN, GD CHAN, CF COOPER, WS DEVRIES, GJ STEELE, WF STUART, ME VELLA, MC WELLS, RP INOUE, T OKUMURA, Y MIZUNO, M TI ACCELERATION OF 100 MA OF H- IN A SINGLE-CHANNEL ELECTROSTATIC QUADRUPOLE ACCELERATOR SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article AB Neutral beams for the next generation tokamaks will be based on multiampere negative ion beams with a beam energy of about 1.0 MeV and pulse lengths of a thousand seconds. High intensity de beams at these levels of beam energy will require extensive development in electrostatic accelerators. At Lawrence Berkeley Laboratory, a two-module electrostatic quadrupole (ESQ) accelerator was built to accelerate ions to 260 keV. In this experiment, up to 100 mA of H- beam current was obtained from a Japan Atomic Energy Research Institute cesiated volume source using a multiaperture preaccelerator which merged 19 beamlets into a single circular beam at the entrance to the BSQ accelerator. The H- beam was accelerated by the ESQ to accelerate 200 keV without any significant beam loss or emittance growth. (C) 1995 American Institute of Physics. C1 JAPAN ATOM ENERGY RES INST,NAKA,IBARAKI 31101,JAPAN. RP KWAN, JW (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 6 TC 8 Z9 8 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JUL PY 1995 VL 66 IS 7 BP 3864 EP 3868 DI 10.1063/1.1145450 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA RK224 UT WOS:A1995RK22400023 ER PT J AU HASSLACHER, B TILDEN, MW AF HASSLACHER, B TILDEN, MW TI LIVING MACHINES SO ROBOTICS AND AUTONOMOUS SYSTEMS LA English DT Article DE ADAPTIVE MINIMAL MACHINES; ROBOBIOLOGY; NANOTECHNOLOGY ID NEURAL NETWORKS; DYNAMICS AB Our aim is to sketch the boundaries of a parallel track in the evolution of robotic forms that is radically different from any previously attempted. To do this we will first describe the motivation for doing so and then the strategy for achieving it. Along the way, it will become clear that the machines we design and build are not robots in any traditional sense. They are not machines designed to perform a set of goal-oriented tasks, or work, but rather to express modes of survivalist behavior: the survival of a mobile autonomous machine in an a priori unknown and possibly hostile environment. We use no notion of conventional ''intelligence'' in our designs, although we suspect some strange form of that may come later. Our topic is survival-oriented machines, and it turns out that intelligence in any sophisticated form is unnecessary for this concept. For such machines, if life is provisionally defined as that which moves for its own purposes, then we are dealing with living machines and how to evolve them. We call these machines biomorphs (BIOlogical MORPHology), a form of parallel life. C1 LOS ALAMOS NATL LAB,DIV BIOPHYS,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV THEORET,FIELD THEORY GRP,LOS ALAMOS,NM 87545. RP HASSLACHER, B (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,COMPLEX SYST GRP,LOS ALAMOS,NM 87545, USA. NR 62 TC 33 Z9 35 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8890 J9 ROBOT AUTON SYST JI Robot. Auton. Syst. PD JUL PY 1995 VL 15 IS 1-2 BP 143 EP 169 DI 10.1016/0921-8890(95)00019-C PG 27 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Robotics SC Automation & Control Systems; Computer Science; Robotics GA RK222 UT WOS:A1995RK22200010 ER PT J AU POLTEV, VI GONZALEZ, EJ TEPLUKHIN, AV MALENKOV, GG MILLER, J AF POLTEV, VI GONZALEZ, EJ TEPLUKHIN, AV MALENKOV, GG MILLER, J TI COMPARATIVE-STUDY OF 3 SYSTEMS OF POTENTIAL FUNCTIONS FOR SIMULATION OF NUCLEIC-ACID HYDRATION SO RUSSIAN CHEMICAL BULLETIN LA English DT Article DE HYDRATION; COMPUTER SIMULATION; MONTE CARLO; POTENTIAL FUNCTIONS; INTERMOLECULAR INTERACTIONS; NUCLEIC ACIDS ID BASES AB Three systems of potential functions (PF) which are used in simulations of hydration of bioorganic molecules have been compared: Poltev and Malenkov (PM), Weiner and Kollman (WK) (used in the widespread AMBER program), and OPLS (optimized potentials for liquid simulations) of Jorgensen (J). The values of interaction energies of individual water molecules with single molecules of nucleic bases calculated via PM potentials are in somewhat better accord with mass spectrometric data than those calculated via WK PF. OPLS give much smaller energy values for all compounds considered; therefore they were not used in further computations. Monte Carlo simulation of hydration of 9-methyladenine, 1-methyluracil, and 1-methylthymine in systems with 300 water molecules and periodic boundary conditions have been performed. Simulations with PM potentials give better agreement with the experimental data on hydration energies than those with WK PF that allows to prefer PM PF for simulation of hydration of nucleic acids. C1 AUTONOMOUS UNIV PUEBLA, PUEBLA, MEXICO. RUSSIAN ACAD SCI, INST MATH PROBLEMS BIOL, PUSHCHINO 142292, RUSSIA. RUSSIAN ACAD SCI, INST PHYS CHEM, MOSCOW 117915, RUSSIA. PACIFIC NW LAB, RICHLAND, WA USA. RP POLTEV, VI (reprint author), RUSSIAN ACAD SCI, INST THEORET & EXPTL BIOPHYS, PUSHCHINO 142292, RUSSIA. RI Teplukhin, Alexander/J-9827-2012 OI Teplukhin, Alexander/0000-0002-3285-0240 NR 15 TC 2 Z9 2 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA CONSULTANTS BUREAU 233 SPRING ST, NEW YORK, NY 10013 SN 1066-5285 J9 RUSS CHEM B+ JI Russ. Chem. Bull. PD JUL PY 1995 VL 44 IS 7 BP 1333 EP 1338 DI 10.1007/BF00700914 PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA RZ930 UT WOS:A1995RZ93000034 ER PT J AU SHERBY, OD WADSWORTH, J AF SHERBY, OD WADSWORTH, J TI DAMASCUS STEEL AND SUPERPLASTICITY .1. BACKGROUND, SUPERPLASTICITY, AND GENUINE DAMASCUS STEELS SO SAMPE JOURNAL LA English DT Article C1 LAWRENCE LIVERMORE NATL LAB,CHEM & MAT SCI DIRECTORATE,LIVERMORE,CA. RP SHERBY, OD (reprint author), STANFORD UNIV,DEPT MAT SCI & ENGN,STANFORD,CA 94305, USA. NR 19 TC 8 Z9 8 U1 0 U2 3 PU SAMPE PUBLISHERS PI COVINA PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 SN 0091-1062 J9 SAMPE J JI Sampe J. PD JUL-AUG PY 1995 VL 31 IS 4 BP 10 EP 17 PG 8 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA RN619 UT WOS:A1995RN61900003 ER PT J AU SERBER, R CREASE, RP AF SERBER, R CREASE, RP TI EYEWITNESS TO THE BOMB - A FIRST-PERSON ACCOUNT OF THE TESTING, DROPPING AND AFTERMATH OF THE FIRST ATOMIC BOMBS SO SCIENCES-NEW YORK LA English DT Article C1 SUNY STONY BROOK,STONY BROOK,NY 11794. BROOKHAVEN NATL LAB,UPTON,NY 11973. RP SERBER, R (reprint author), COLUMBIA UNIV,NEW YORK,NY 10027, USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 E 63RD ST, NEW YORK, NY 10021 SN 0036-861X J9 SCIENCES JI Sci.-New York PD JUL-AUG PY 1995 VL 35 IS 4 BP 23 EP 29 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RK938 UT WOS:A1995RK93800020 ER PT J AU BESMANN, TM AF BESMANN, TM TI PLUTONIUM PUZZLES SO SCIENTIFIC AMERICAN LA English DT Letter RP BESMANN, TM (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SCI AMERICAN INC PI NEW YORK PA 415 MADISON AVE, NEW YORK, NY 10017 SN 0036-8733 J9 SCI AM JI Sci.Am. PD JUL PY 1995 VL 273 IS 1 BP 8 EP 8 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RD395 UT WOS:A1995RD39500007 ER PT J AU JAYARAM, R MILLER, MK AF JAYARAM, R MILLER, MK TI DIRECT OBSERVATION OF ZIRCONIUM SEGREGATION TO DISLOCATIONS AND GRAIN-BOUNDARIES IN NIAL SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID DUCTILE TRANSITION; ATOM-PROBE; BRITTLE; BORON; TENSILE C1 UNIV TENNESSEE,DEPT MAT SCI & ENGN,KNOXVILLE,TN 37996. RP JAYARAM, R (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN 37831, USA. NR 30 TC 23 Z9 23 U1 1 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD JUL 1 PY 1995 VL 33 IS 1 BP 19 EP 26 DI 10.1016/0956-716X(95)00036-U PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RF109 UT WOS:A1995RF10900004 ER PT J AU GU, M EISENSTAT, SC AF GU, M EISENSTAT, SC TI DOWNDATING THE SINGULAR-VALUE DECOMPOSITION SO SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS LA English DT Article DE SINGULAR VALUE DECOMPOSITION; DOWNDATING; SECULAR EQUATION ID CHOLESKY FACTORIZATION; PARTICLE SIMULATIONS; ALGORITHM AB Let A be a matrix with known singular values and left and/or right singular vectors, and let A' be the matrix obtained by deleting a row from A. We present efficient and stable algorithms for computing the singular values and left and/or right singular vectors of A'. We also show that the problem of computing the singular values of A' is well conditioned when the left singular vectors of A are given, but can be ill conditioned when they are not. Our algorithms reduce the problem to computing the eigendecomposition or singular value decomposition of a matrix that has a simple structure, and solve the reduced problem via finding the roots of a secular equation. Previous algorithms of this type can be unstable and always solve the ill-conditioned problem. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. YALE UNIV,DEPT COMP SCI,NEW HAVEN,CT 06520. RP GU, M (reprint author), UNIV CALIF BERKELEY,DEPT MATH,BERKELEY,CA 94720, USA. RI Gu, Min/B-6627-2008 NR 28 TC 24 Z9 24 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0895-4798 J9 SIAM J MATRIX ANAL A JI SIAM J. Matrix Anal. Appl. PD JUL PY 1995 VL 16 IS 3 BP 793 EP 810 DI 10.1137/S0895479893251472 PG 18 WC Mathematics, Applied SC Mathematics GA RH940 UT WOS:A1995RH94000007 ER PT J AU STRAIN, J AF STRAIN, J TI LOCALLY CORRECTED MULTIDIMENSIONAL QUADRATURE-RULES FOR SINGULAR FUNCTIONS SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE NUMERICAL INTEGRATION; SINGULAR INTEGRALS; FAST ALGORITHMS; QUADTREES; SINGULAR VALUE DECOMPOSITION; VORTEX METHODS; POTENTIAL THEORY; INTERPOLATION ID FAST GAUSS TRANSFORM; MATRIX MULTIPLICATION; INTEGRAL-EQUATIONS; POTENTIAL-THEORY; ALGORITHM AB Accurate numerical integration of singular functions usually requires either adaptivity or product integration. Both interfere with fast summation techniques and thus hamper large-scale computations. This paper presents a method for computing highly accurate quadrature formulas for singular functions which combine well with fast summation methods. Given the singularity and the N nodes, we first construct weights which integrate smooth functions with order-k accuracy. Then we locally correct a small number of weights near the singularity, to achieve order-k accuracy on singular functions as well. The method is highly efficient and runs in O(Nk(2d) + N log(2) N) time and O (k(2d) + N) space. We derive precise error bounds and time estimates and confirm them with numerical results which demonstrate the accuracy and efficiency of the method in large-scale computations. As part of our implementation, we also construct a new adaptive multidimensional product Gauss quadrature routine with an effective error estimate, and compare it with a standard package. The approach generalizes to interpolate and differentiate scattered data and to integrate singular functions over curves and surfaces in several dimensions. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP STRAIN, J (reprint author), UNIV CALIF BERKELEY,DEPT MATH,BERKELEY,CA 94720, USA. NR 29 TC 41 Z9 41 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD JUL PY 1995 VL 16 IS 4 BP 992 EP 1017 DI 10.1137/0916058 PG 26 WC Mathematics, Applied SC Mathematics GA RF584 UT WOS:A1995RF58400014 ER PT J AU LOSKIEWICZBUCZAK, A UHRIG, RE AF LOSKIEWICZBUCZAK, A UHRIG, RE TI INFORMATION FUSION BY FUZZY SET OPERATION AND GENETIC ALGORITHMS SO SIMULATION LA English DT Article DE MULTISENSOR FUSION; FUZZY LOGIC; GENETIC ALGORITHMS; NEURAL NETWORKS; VIBRATION MONITORING; DECISION MAKING ID DECISION-MAKING; NETWORKS AB This paper describes novel multisensor information fusion methods based on fuzzy logic and genetic algorithms. Unlike most fuzzy logic-based systems that perform reasoning by fuzzy IF-THEN rules, the reasoning in this work takes place by means of fuzzy aggregation connectives. These connectives are capable of combining information not only by union and intersection used in traditional set theories but also by compensatory connectives that better mimic the human reasoning process. The particular connective used in this work for the purpose of data fusion is the generalized mean aggregation connective. The distinctive feature of this information fusion method is that the optimal parameters of the aggregation connective are automatically found by a genetic algorithm. Both elitist and nonelitist strategies for genetic algorithms are investigated. Two different methods are developed. The first technique performs aggregation of evidence from two sensors in one step; if there are more sensors, information from the next sensor is fused with the data already aggregated. The second technique developed performs one step fusion from all the sensors available. The techniques devised are tested on a vibration monitoring problem and the results are described. C1 UNIV TENNESSEE,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV INSTRUMENTAT & CONTROLS,OAK RIDGE,TN 37831. NR 26 TC 3 Z9 3 U1 0 U2 0 PU SIMULATION COUNCILS INC PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92117 SN 0037-5497 J9 SIMULATION JI Simulation PD JUL PY 1995 VL 65 IS 1 BP 52 EP 66 DI 10.1177/003754979506500106 PG 15 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering SC Computer Science GA RP483 UT WOS:A1995RP48300005 ER PT J AU OOSTROM, M DANE, JH MISSILDINE, BC LENHARD, RJ AF OOSTROM, M DANE, JH MISSILDINE, BC LENHARD, RJ TI ERROR ANALYSIS OF DUAL-ENERGY GAMMA-RADIATION MEASUREMENTS SO SOIL SCIENCE LA English DT Article ID WATER; SATURATION; MOVEMENT; SYSTEM; SOIL AB Dual-energy gamma radiation systems are currently used to simultaneously determine either the dry bulk density of a porous medium and the volumetric content of one fluid, the volumetric fluid contents of two fluids, or the salt concentration and volumetric mater content. In this paper an error analysis based on the well-known error propagation formula is presented for all three types of measurements. For each application, formulae are derived that calculate the variance of a measured variable as a function of the observed count rates, attenuation coefficients, and path length. These formulae can be implemented in data acquisition or postprocessing programs. In addition, formulae are presented that relate the variance to the values of the measured variables, measurement counting time, calibration counting time, path lengths, source intensities, and attenuation coefficients. The latter formulae benefit experimental design. The effect of counting and calibration time, attenuation coefficients, source strengths, and path lengths on the probable error are demonstrated. For each type of measurement, experiments are conducted to test the validity of the presented theory. It was shown that, in general, the difference between the measured value and the true value of a variable is less than 1 standard deviation. C1 AUBURN UNIV, DEPT AGRON & SOILS, AUBURN, AL 36849 USA. RP OOSTROM, M (reprint author), PACIFIC NW LAB, CTR EARTH & ENVIRONM SCI, POB 999,MS K9-33, RICHLAND, WA 99352 USA. NR 14 TC 28 Z9 29 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0038-075X J9 SOIL SCI JI Soil Sci. PD JUL PY 1995 VL 160 IS 1 BP 28 EP 42 DI 10.1097/00010694-199507000-00004 PG 15 WC Soil Science SC Agriculture GA RL864 UT WOS:A1995RL86400004 ER PT J AU TAMULAITIS, G RODRIGUES, PAM YU, PY AF TAMULAITIS, G RODRIGUES, PAM YU, PY TI SCREENING OF LONGITUDINAL OPTICAL PHONONS BY CARRIERS IN QUANTUM DOTS SO SOLID STATE COMMUNICATIONS LA English DT Article DE SEMICONDUCTORS; NANOSTRUCTURES; PHONONS; ELECTRON-PHONON INTERACTION; INELASTIC LIGHT SCATTERING ID SEMICONDUCTOR-DOPED GLASSES; RAMAN-SCATTERING; MICROCRYSTALLITES; RESONANCE; CDSE; ABSORPTION; DYNAMICS; CLUSTERS; STATES; DONORS AB Screening of the macroscopic electric field associated with longitudinal optical (LO) phonons by carriers in polar semiconductor nanocrystals is studied both theoretically and experimentally. A shift in the LO-phonon energy induced by electronic transitions from the ground state to the excited states of an electron confined in a nanocrystal is predicted. This result is in agreement with experimental resonant Raman spectra of CdSxSe1-x-doped glass excited by intense picosecond dye laser pulses. C1 UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RI Rodrigues, P. A. M./B-1498-2017 OI Rodrigues, P. A. M./0000-0003-2712-7549 NR 22 TC 6 Z9 6 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1098 J9 SOLID STATE COMMUN JI Solid State Commun. PD JUL PY 1995 VL 95 IS 4 BP 227 EP 231 DI 10.1016/0038-1098(95)00251-0 PG 5 WC Physics, Condensed Matter SC Physics GA RC283 UT WOS:A1995RC28300006 ER PT J AU LUAN, S PANG, HM HOUK, RS AF LUAN, S PANG, HM HOUK, RS TI APPLICATION OF GENERALIZED STANDARD ADDITIONS METHOD TO INDUCTIVELY-COUPLED PLASMA-ATOMIC EMISSION-SPECTROSCOPY WITH AN ECHELLE SPECTROMETER AND SEGMENTED-ARRAY CHARGE-COUPLED DETECTORS SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID MULTIVARIATE CALIBRATION; MULTICOMPONENT ANALYSIS; ICP-OES; TRACE-ELEMENTS; LINE SELECTION; DATA REDUCTION; INTERFERENCES; SPECTRA; ELIMINATION; COMPENSATION AB Simultaneous correction for both spectral interferences and matrix effects in inductively coupled plasma atomic emission spectrometry can be accomplished by using the generalized standard additions method (GSAM). Results obtained with the application of the GSAM to the Perkin-Elmer Optima 3000 ICP atomic emission spectrometer are presented. The echelle-based polychromator with segmented-array charge-coupled device detectors enables the direct, visual examination of the overlapping lines Cd(I) 228.802 nm and As(I)228.812 nm. The slit translation capability allows a large number of data points to be sampled; therefore, the advantage of noise averaging is gained. Pure spectra of each of the spectrally active components in the sample can be extracted through the GSAM C1 US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 51 TC 12 Z9 13 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0584-8547 J9 SPECTROCHIM ACTA B JI Spectroc. Acta Pt. B-Atom. Spectr. PD JUL PY 1995 VL 50 IS 8 BP 791 EP 801 DI 10.1016/0584-8547(94)00159-S PG 11 WC Spectroscopy SC Spectroscopy GA RT073 UT WOS:A1995RT07300009 ER PT J AU MITCHELL, TJ MORRIS, MD YLVISAKER, D AF MITCHELL, TJ MORRIS, MD YLVISAKER, D TI 2-LEVEL FRACTIONAL FACTORIALS AND BAYESIAN PREDICTION SO STATISTICA SINICA LA English DT Article DE BAYESIAN PREDICTION; COMPUTER EXPERIMENTS; FRACTIONAL FACTORIAL DESIGNS; STATIONARY PROCESSES; 2-LEVEL FACTORS ID DESIGN AB The paper considers the problem of design for prediction of a deterministic response function x over a domain T. A Bayesian approach is used, where the random function that represents prior uncertainty about x is a stationary Gaussian stochastic process X. Here T = {-1, 1}(k): the designs considered are fractional factorials, and the objective is to optimize the choice of design with respect to some criterion. The structure of stationary and of isotropic processes on T is discussed, along with the conditioning of such a process based on observation at a fractional factorial design. There are useful regularities in this, together with workable criteria on the prediction of interactions and on the prediction of unobserved values of the process. C1 UNIV CALIF LOS ANGELES,DEPT MATH,LOS ANGELES,CA 90024. OAK RIDGE NATL LAB,DIV ENGN PHYS & MATH,OAK RIDGE,TN 37831. NR 15 TC 6 Z9 6 U1 1 U2 2 PU STATISTICA SINICA PI WINNIPEG PA C/O DR S W CHENG,MANAG EDITOR DEPT STAT UNIV MANTOBA, WINNIPEG MB R3T 2N2, CANADA SN 1017-0405 J9 STAT SINICA JI Stat. Sin. PD JUL PY 1995 VL 5 IS 2 BP 559 EP 573 PG 15 WC Statistics & Probability SC Mathematics GA RN080 UT WOS:A1995RN08000011 ER PT J AU SELVAMANICKAM, V MARTIN, PM KROEGER, DM TOMSIC, M AF SELVAMANICKAM, V MARTIN, PM KROEGER, DM TOMSIC, M TI FABRICATION OF (BI,PB)(2)SR2CA2CU3O10 TAPES BY A TUBULAR WIRE PROCESS SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Note AB (Bi,Pb)(2)Sr2Ca2Cu3O10 tapes have been fabricated by a tubular wire process which offers the advantages of near-net shape manufacturing and a lower ratio of silver to superconductor compared with the conventional powder-in-tube technique. Critical currents as high as 15 A have been achieved at 77 K in short sections of tapes fabricated by this process. The development of critical current with heat treatment time and the magnetic-field dependence of critical current of the tapes made by this process are found to be similar to those of tapes fabricated under identical conditions by the powder-in-tube technique. C1 OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37831. PLASTRON INC,TROY,OH 45373. NR 3 TC 12 Z9 12 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD JUL PY 1995 VL 8 IS 7 BP 587 EP 590 DI 10.1088/0953-2048/8/7/018 PG 4 WC Physics, Applied; Physics, Condensed Matter SC Physics GA RH567 UT WOS:A1995RH56700018 ER PT J AU MELETIS, EI ERDEMIR, A FENSKE, GR AF MELETIS, EI ERDEMIR, A FENSKE, GR TI TRIBOLOGICAL CHARACTERISTICS OF DLC FILMS AND DUPLEX PLASMA NITRIDING/DLC COATING TREATMENTS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE TRIBOLOGY; DIAMOND-LIKE CARBON; DUPLEX PLASMA TREATMENTS; PLASMA NITRIDING ID DIAMOND-LIKE CARBON; CHEMICAL VAPOR-DEPOSITION; WEAR PROPERTIES; FRICTION; DISCHARGE; BEHAVIOR; HUMIDITY; SURFACE; LAYERS; STEEL AB An innovative approach to improving tribological behavior of surfaces and meeting long-term durability requirements of engineering devices is to design and develop novel systems incorporating multilayers and/or duplex diffusion/plasma coating treatments. In the present work, the wear and friction characteristics of diamond-like carbon (DLC) films and composite surface layers were studied by conducting pin-on-disc experiments. M 50 steel and Ti-6Al-4V alloy were used as substrate materials. The composite layers consisted of a N-diffusion zone obtained by ion nitriding, followed by a 500 Angstrom vapor-deposited Si bond layer and a 0.4 mu m DLC him. The purpose of the bond layer was to enhance adhesion between the substrate and the DLC films. An ion-beam method was used for the deposition of the DLC films. The pin-on-disc results showed that for both materials the DLC coating produced a reduction in the coefficient of friction of about one order of magnitude. The reduction in the coefficient of friction was found to be consistent with the formation of a carbon-rich transfer film on the contact surfaces. Wear scar profiling and weight loss calculations showed that the wear resistance of the DLC-coated materials was dramatically improved. Comparisons between duplex N-diffusion layer/DLC coating and single DLC coating on Ti-6Al-4V alloy substrates showed that the duplex treatments possessed a significantly higher wear resistance. Nitriding was found to cause substrate hardening that reduces subsurface deformation, thus improving coating support and extending considerably DLC film lifetime. C1 ARGONNE NATL LAB, DIV ENERGY TECHNOL, ARGONNE, IL 60439 USA. RP LOUISIANA STATE UNIV, DEPT MECH ENGN, BATON ROUGE, LA 70803 USA. NR 25 TC 99 Z9 102 U1 2 U2 20 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 JUL PY 1995 VL 73 IS 1-2 BP 39 EP 45 DI 10.1016/0257-8972(94)02375-1 PG 7 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RG610 UT WOS:A1995RG61000007 ER PT J AU SCHRODER, U MCINTYRE, BJ SALMERON, M SOMORJAI, GA AF SCHRODER, U MCINTYRE, BJ SALMERON, M SOMORJAI, GA TI SPATIALLY CONTROLLED OXIDATION BY THE TIP OF A SCANNING TUNNELING MICROSCOPE OPERATING INSIDE A REACTOR SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 14th European Conference on Surface Science (ECOSS-14) CY SEP 19-23, 1994 CL LEIPZIG, GERMANY SP European Phys Soc, Int Union Vacuum Sci Tech & Applicat, Deut Phys Gesell, Deut Bunsengesell Phys Chem DE ALKANES; ALKENES; CATALYSIS; LOW INDEX SINGLE CRYSTAL SURFACES; PLATINUM; SCANNING TUNNELING MICROSCOPY; SURFACE CHEMICAL REACTION ID SURFACE SCIENCE; PT(111) SURFACE; ADSORPTION; PLATINUM; HYDROGEN; OXYGEN AB The tip of a scanning tunneling microscope that operates inside an atmospheric pressure chemical reactor cell, has been used to locally oxidize carbonaceous fragments deposited on the surface of Pt(111). The carbon fragments were produced by partial dehydrogenation of propylene. The reactant gas environment inside the cell consisted of pure O-2 at 300 K. The Pt/Rh tip acted as a catalyst after activation by short voltage pulses. In this active state the clusters in the area scanned by the tip were reacted away with very high spatial resolution. C1 UNIV CALIF BERKELEY, DEPT CHEM, BERKELEY, CA 94720 USA. UNIV BONN, INST PHYS & THEORET CHEM, D-53115 BONN, GERMANY. RP SCHRODER, U (reprint author), UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA. NR 14 TC 15 Z9 15 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JUL 1 PY 1995 VL 331 BP 337 EP 342 DI 10.1016/0039-6028(95)00205-7 PN A PG 6 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA RJ786 UT WOS:A1995RJ78600060 ER PT J AU HANBICKI, AT BADDORF, AP PLUMMER, EW HAMMER, B SCHEFFLER, M AF HANBICKI, AT BADDORF, AP PLUMMER, EW HAMMER, B SCHEFFLER, M TI THE INTERACTION OF HYDROGEN WITH THE (110) SURFACE OF NIAL SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 14th European Conference on Surface Science (ECOSS-14) CY SEP 19-23, 1994 CL LEIPZIG, GERMANY SP European Phys Soc, Int Union Vacuum Sci Tech & Applicat, Deut Phys Gesell, Deut Bunsengesell Phys Chem DE ALLOYS; ATOM-SOLID INTERACTIONS, SCATTERING, DIFFRACTION; ATOM-SOLID REACTIONS; HYDROGEN; NIAL; SURFACE RELAXATION AND RECONSTRUCTION ID NIAL(110) SURFACE; RIPPLED RELAXATION; METAL-SURFACES; ENERGY; PSEUDOPOTENTIALS; ALUMINUM; ALLOY AB The adsorption of hydrogen onto the (110) surface of the ordered alloy NiAl is being investigated experimentally and theoretically. At this stage, the experimental and theoretical results are complementary. Experiment reveals that the dissociative adsorption of atomic hydrogen is activated and indicates that the presence of H on the surface causes dramatic changes in the atomic positions of the Ni and Al atoms. Density functional theory for a (1 x 1) H overlayer identifies the H bonding site as the Ni-Ni bridge and predicts the surface rippling on clean NiAl(110) is removed by hydrogen. C1 FRITZ HABER INST, D-14195 BERLIN, GERMANY. UNIV PENN, DEPT PHYS, PHILADELPHIA, PA 19104 USA. UNIV TENNESSEE, DEPT PHYS & ASTRON, KNOXVILLE, TN 37996 USA. TECH UNIV DENMARK, DEPT PHYS, CAMP, DK-2800 LYNGBY, DENMARK. RP HANBICKI, AT (reprint author), OAK RIDGE NATL LAB, DIV SOLID STATE, POB 2008, OAK RIDGE, TN 37831 USA. RI Hammer, Bjork/C-3701-2013; Baddorf, Arthur/I-1308-2016; Scheffler, Matthias/O-4649-2016; OI Baddorf, Arthur/0000-0001-7023-2382; Hammer, Bjork/0000-0002-7849-6347 NR 31 TC 44 Z9 44 U1 1 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 JUL 1 PY 1995 VL 331 BP 811 EP 817 DI 10.1016/0039-6028(95)00376-2 PN A PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA RJ786 UT WOS:A1995RJ78600140 ER PT J AU CARPINELLI, JM WEITERING, HH AF CARPINELLI, JM WEITERING, HH TI SCANNING-TUNNELING-MICROSCOPY STUDY OF THE METAL-INDUCED SI(111)3X1 RECONSTRUCTION - EVIDENCE FOR DIMERIZED CHAIN FORMATION SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 14th European Conference on Surface Science (ECOSS-14) CY SEP 19-23, 1994 CL UNIV LEIPZIG, LEIPZIG, GERMANY SP Deut Forschungsgemeinsch, European Community, Human Capital & Mobil Program, Wilhelm & Else Heraeus Stift, Sachsisches Staatsminist Wissensch & Kunst HO UNIV LEIPZIG DE ADATOMS; METAL-SEMICONDUCTOR INTERFACES; MOLECULAR BEAM EPITAXY; SCANNING TUNNELING MICROSCOPY; SCANNING TUNNELING SPECTROSCOPY; SILICON; SILVER; SURFACE ELECTRONIC PHENOMENA; SURFACE RELAXATION AND RECONSTRUCTION ID ELECTRONIC-PROPERTIES; SURFACE; ADSORPTION; NA; TEMPERATURE AB Scanning tunneling microscope (STM) images of the Si(111)3 X 1-Ag interface exhibit a strong bias dependence. A clear dimerization of the Si surface atoms is evident from the 1 V empty state images. The imaged electronic states exhibit either a 3 X 1 or a 6 X 1 periodicity. These results are interpreted on the basis of the recently proposed dimerized chain or conjugated chain model. It is demonstrated that the dimer orientation in every second dimer row of the 3 X 1 reconstruction can be changed using a STM tip, thereby producing a 6 X 1 symmetry. This phenomenon could be similar to the well-known soliton excitations in doped conjugated polymers. C1 UNIV TENNESSEE, DEPT PHYS & ASTRON, KNOXVILLE, TN 37996 USA. OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37831 USA. NR 20 TC 33 Z9 33 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JUL 1 PY 1995 VL 331 BP 1015 EP 1021 DI 10.1016/0039-6028(95)00100-X PN B PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA RK799 UT WOS:A1995RK79900028 ER PT J AU ARGO, P CLARK, RA DOUGLAS, A GUPTA, V HASSARD, J LEWIS, PM MAGUIRE, PKH PLAYFORD, K RINGDAL, F AF ARGO, P CLARK, RA DOUGLAS, A GUPTA, V HASSARD, J LEWIS, PM MAGUIRE, PKH PLAYFORD, K RINGDAL, F TI THE DETECTION AND RECOGNITION OF UNDERGROUND NUCLEAR-EXPLOSIONS SO SURVEYS IN GEOPHYSICS LA English DT Review DE NUCLEAR EXPLOSION DETECTION AND RECOGNITION; SEISMOLOGY; REMOTE SENSING; RADIOACTIVITY; IONOSPHERIC EFFECTS ID RELATIVE AMPLITUDES; DISCRIMINATION; EARTHQUAKES AB This paper reports on a joint meeting of the Royal Astronomical Society's Joint Association for Geophysics and VERTIC (the Verification Technology Information Centre) held in London in 1992. The topics presented focused on the detection and recognition of underground nuclear explosions. The objective of the meeting was to emphasize the multi-methodological approach that is important in verifying compliance with test-ban treaties. An overview of seismological monitoring was followed by a discussion of the technical and scientific aspects of a global seismic monitoring network, and in particular of the 1991 experiment to test the large-scale international exchange of seismic data between recording stations and data centres world-wide. The current capabilities of satellite remote-sensing were presented, and their use explained in terms of both the provision of information for monitoring the development of foreign nuclear testing programmes and also for providing sufficient information for the evaluation of treaty compliance. A review of radio-isotope sampling showed how the isotopic signature of both air and ground based sampling programmes can be diagnostic of the nuclear source. Finally, previously classified research on the ionospheric effects of underground nuclear explosions was presented, the generated acoustic waves disturbing the ionosphere and producing detectable changes in the reflection of radio and radar signals which have potential as a monitoring technique. C1 UNIV LEEDS,DEPT EARTH SCI,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND. AWE BLACKNEST,READING RG7 4RS,BERKS,ENGLAND. UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,LONDON SW7 2AZ,ENGLAND. VERTIC,LONDON WC2N 6NN,ENGLAND. UNIV LEICESTER,DEPT GEOL,LEICESTER LE1 7RH,LEICS,ENGLAND. UKAEA TECHNOL,HARWELL LABS,OXFORD OX11 0RA,ENGLAND. NORESS,NORSAR,N-2007 KJELLER,NORWAY. RP ARGO, P (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 43 TC 2 Z9 4 U1 2 U2 8 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0169-3298 J9 SURV GEOPHYS JI Surv. Geophys. PD JUL PY 1995 VL 16 IS 4 BP 495 EP 532 DI 10.1007/BF00665683 PG 38 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA RU915 UT WOS:A1995RU91500001 ER PT J AU JONES, DA MARGOLIN, LG TITI, ES AF JONES, DA MARGOLIN, LG TITI, ES TI ON THE EFFECTIVENESS OF THE APPROXIMATE INERTIAL MANIFOLD - A COMPUTATIONAL STUDY SO THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS LA English DT Article ID NAVIER-STOKES EQUATIONS; KURAMOTO-SIVASHINSKY EQUATION; NONLINEAR GALERKIN METHODS; GEVREY CLASS REGULARITY; DIFFERENTIAL-EQUATIONS; TURBULENT FLOWS; CONVERGENCE; ATTRACTORS; TIME AB We present a computational study evaluating the effectiveness of the nonlinear Galerkin method for dissipative evolution equations. We begin by reviewing the theoretical estimates of the rate of convergence for both the standard spectral Galerkin and the nonlinear Galerkin methods. We show that the rate of convergence in both cases depends mainly on how well the basis functions of the spectral method approximate the elements in the space of solutions. This in turn depends on the degree of smoothness of the basis functions, the smoothness of the solutions, and on the level of compatibility at the boundary between the basis functions of the spectral method and the solutions. When the solutions are very smooth inside the domain and very compatible with the basis functions at the boundary, there may be little advantage in using the nonlinear Galerkin method. On the other hand, for less smooth solutions or when there is less compatibility at the boundary with the basis functions, there is a significant improvement in the rate of convergence when using the nonlinear Galerkin method. We demonstrate the validity of our assertions with numerical simulations of the forced dissipative Burgers equation and of the forced Kuramoto-Sivashinsky equation. These simulations also demonstrate that the analytical upper bounds derived for the rates of convergence of both the standard Galerkin and the nonlinear Galerkin are nearly sharp. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV CALIF IRVINE,DEPT MATH,IRVINE,CA 92717. CORNELL UNIV,CTR APPL MATH,ITHACA,NY 14853. RP JONES, DA (reprint author), STANFORD UNIV,CTR TURBULENCE RES,STANFORD,CA 94305, USA. NR 54 TC 27 Z9 27 U1 1 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0935-4964 J9 THEOR COMP FLUID DYN JI Theor. Comput. Fluid Dyn. PD JUL PY 1995 VL 7 IS 4 BP 243 EP 260 DI 10.1007/BF00312444 PG 18 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RJ833 UT WOS:A1995RJ83300002 ER PT J AU HOFFMANN, GR LITTLEFIELD, LG AF HOFFMANN, GR LITTLEFIELD, LG TI ENHANCEMENT OF THE ACTIVITY OF BLEOMYCIN BY CYSTEAMINE IN A MICRONUCLEUS ASSAY IN G(0) HUMAN-LYMPHOCYTES SO TOXICOLOGY LETTERS LA English DT Article DE BLEOMYCIN; CYSTEAMINE; WR-1065; AMINOTHIOLS; RADIOPROTECTORS; MICRONUCLEUS ID INDUCED CHROMOSOME-ABERRATIONS; G0 HUMAN-LYMPHOCYTES; DOSE-RESPONSE; DNA; RADIATION; CELLS; POTENTIATION; GLUTATHIONE; MODULATION; PROTECTION AB The aminothiol cysteamine enhances the induction of micronuclei by bleomycin in G(0) human lymphocytes. The potentiation of bleomycin (12.5, 25, 50, or 100 mu g/ml) increased with cysteamine concentration from 5 to 20 mM in a 2-h treatment before culturing the cells for the cytokinesis-block assay. The maximum clastogenic activity of bleomycin in the presence of cysteamine was more than 10-fold greater than that of the same dosage of bleomycin alone. Both the thiol and amine functions of aminothiols seem to contribute to the potentiation of bleomycin. C1 OAK RIDGE INST SCI & EDUC,DIV MED SCI,OAK RIDGE,TN 37831. RP HOFFMANN, GR (reprint author), COLL HOLY CROSS,DEPT BIOL,WORCESTER,MA 01610, USA. FU NCI NIH HHS [CA 51 388] NR 20 TC 13 Z9 16 U1 0 U2 0 PU ELSEVIER SCI PUBL IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0378-4274 J9 TOXICOL LETT JI Toxicol. Lett. PD JUL PY 1995 VL 78 IS 2 BP 147 EP 151 DI 10.1016/0378-4274(95)03248-J PG 5 WC Toxicology SC Toxicology GA RG912 UT WOS:A1995RG91200010 PM 7542408 ER PT J AU LAM, KM YAMAMOTO, R DAMASSA, AJ AF LAM, KM YAMAMOTO, R DAMASSA, AJ TI DNA DIVERSITY AMONG ISOLATES OF CAMPYLOBACTER-JEJUNI DETECTED BY PCR-BASED RAPD FINGERPRINTING SO VETERINARY MICROBIOLOGY LA English DT Note DE CAMPYLOBACTER JEJUNI; RAPD PROFILING; PCR ID POLYMERASE CHAIN-REACTION; ARBITRARY PRIMERS; COLI; GENOMES AB A PCR-based randomly amplified polymorphic DNA method was used to amplify Campylobacter jejuni DNA using a single oligonucleotide primer derived from either a homologous source or from Mycoplasma gallisepticum. The method was able to detect the heterogeneity of amplified DNA from human, chicken and turkey sources and can be used as a tool to study the epidemiology of Campylobacter jejuni infection. C1 UNIV CALIF DAVIS,SCH VET MED,DEPT POPULAT HLTH & REPROD,DAVIS,CA 95616. RP LAM, KM (reprint author), LAWRENCE LIVERMORE NATL LAB,SCH VET MED,DEPT PATHOL MICROBIOL & IMMUNOL,DAVIS,CA 95616, USA. NR 18 TC 11 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1135 J9 VET MICROBIOL JI Vet. Microbiol. PD JUL PY 1995 VL 45 IS 2-3 BP 269 EP 274 DI 10.1016/0378-1135(94)00133-H PG 6 WC Microbiology; Veterinary Sciences SC Microbiology; Veterinary Sciences GA RM170 UT WOS:A1995RM17000017 PM 7571378 ER PT J AU WAN, JM TOKUNAGA, TK TSANG, CF AF WAN, JM TOKUNAGA, TK TSANG, CF TI BACTERIAL SEDIMENTATION THROUGH A POROUS-MEDIUM SO WATER RESOURCES RESEARCH LA English DT Article ID CONTAMINATED SANDY AQUIFER; DEEP-BED FILTRATION; ESCHERICHIA-COLI; SUBSURFACE SEDIMENTS; SOIL PARTICLES; TRANSPORT; CELL; GROUNDWATER; SURFACE; MODEL AB Numerous previous studies of bacterial transport in groundwaters and to deep aquifers and sediments have either neglected, or regarded as insignificant, the potential contribution of bacterial sedimentation. This study examines the potential significance of sedimentation as a mechanism for bacterial transport. A simple model is developed to predict the behavior of particles (bacterial or inorganic colloids) sedimenting through granular porous media under hydrostatic conditions. The model indicates that tortuosity-limited sedimentation velocities through porous media consisting of large, well-rounded grains can proceed at velocities close to (approximate to 90% that of) free sedimentation in water columns when particle-grain interactions involve only tortuosity. The assumption of neutral buoyancy of bacteria was demonstrated to be invalid through buoyant density measurements on 25 subsurface bacterial strains (using Percoll density gradient centrifugation). An average buoyant density of 1.088 Mg m(-3) was obtained (range from 1.040 to 1.121 Mg m(-3)). The two nonmotile bacterial strains selected for sedimentation experiments were Arthrobacter globiformis B672 (isolated from the Middendorf aquifer, 259-m depth), and OYS3, a streptomycin-resistant strain isolated from shallow groundwaters at Oyster, Virginia. All experiments were carried out under nongrowth conditions. Stokes' law sedimentation velocities for the two bacterial strains calculated from measurements of buoyant densities and characteristic sizes were 5.8 and 40 mm d(-1), respectively. Direct measurements of free sedimentation of Arthrobacter B672 and OYS3 through water columns (21 degrees C) yielded median velocities of 7.1 and 42 mm d(-1) respectively, in good agreement with Stokes' law calculations. The Arthrobacter B672 and OYS3 strains sedimented through saturated sand columns (quartz sand, 300-420 mu m diameter) under hydrostatic conditions at median velocities of 7 and 17 mm d(-1). Thus the sedimentation model is consistent with sand column observations on Arthrobacter B672 and too simplistic in the case of OYS3. Bacterial breakthrough by sedimentation exhibited trends consistent with first-order attenuation with distance. Bacterial deposition coefficients for this first-order model were in the range of 0.008-0.012 mm(-1). Surface physical-chemical interactions, grain and pore size distributions, and grain surface microtopography can be very important in controlling the effectiveness of bacterial sedimentation as a transport mechanism. This research suggested that if timescales are sufficiently long, spanning many generations, sedimentation can become a significant mechanism for bacterial transport. RP WAN, JM (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV EARTH SCI,BERKELEY,CA 94720, USA. RI Tokunaga, Tetsu/H-2790-2014; Wan, Jiamin/H-6656-2014 OI Tokunaga, Tetsu/0000-0003-0861-6128; NR 44 TC 35 Z9 35 U1 4 U2 13 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD JUL PY 1995 VL 31 IS 7 BP 1627 EP 1636 DI 10.1029/95WR01255 PG 10 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA RG411 UT WOS:A1995RG41100002 ER PT J AU MATISOFF, G HOLDREN, GR AF MATISOFF, G HOLDREN, GR TI A MODEL FOR SULFUR ACCUMULATION IN SOFT-WATER LAKE-SEDIMENTS SO WATER RESOURCES RESEARCH LA English DT Article ID ALKALINITY GENERATION; SULFATE REDUCTION; ICE-CORE; ACIDIFICATION; NITRATE AB A geochemical model for sulfur in soft water lake sediments of the Adirondack Mountains, New York, is developed to gain insight into the timing and magnitude of historical changes in sulfur loading. Surficial sulfur concentrations range from 3500 to 10,000 mu g g(-1), increase to 6000 to >20,000 mu g g(-1) at a depth of 2-6 cm, and then decrease downcore to background revels of 2500-7500 mu g g(-1). Sulfate concentrations are about 50-80 mu M in the overlying water and decrease rapidly below the sediment-water interface. A mathematical model is constructed assuming sulfur is incorporated into sediments by burial of detrital organic matter and by diffusion of dissolved sulfate from the overlying water with subsequent fixation into the sediment solids. Several scenarios of historical sulfate deposition were examined as model boundary conditions. The observed sediment sulfur profiles are best modeled using boundary conditions showing loading increases of about a factor of 8 since about 1940. Assuming as much as a decade of retention of sulfate within the terrestrial portion of the ecosystem, this suggests that significant increases in sulfate deposition rates began sometime about 1930 in this area. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP MATISOFF, G (reprint author), CASE WESTERN RESERVE UNIV, DEPT GEOL SCI, CLEVELAND, OH 44106 USA. NR 34 TC 14 Z9 15 U1 0 U2 6 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD JUL PY 1995 VL 31 IS 7 BP 1751 EP 1760 DI 10.1029/95WR00430 PG 10 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA RG411 UT WOS:A1995RG41100012 ER PT J AU MACADAM, SS STRINGER, J AF MACADAM, SS STRINGER, J TI THE CIRCUMFERENTIAL DISTRIBUTION OF WASTAGE ON IN-BED TUBES IN FLUIDIZED-BED COMBUSTORS SO WEAR LA English DT Article; Proceedings Paper CT 8th International Conference on Erosion by Liquid and Solid Impact (ELSI VIII) CY SEP 04-08, 1994 CL CAMBRIDGE, ENGLAND SP EPRI DE WASTAGE; FLUIDIZED BED; HEAT EXCHANGERS; EROSION AB The circumferential distribution of metal loss about heat exchanger tubes within fluidized bed combustors usually shows one of two distinct patterns. In one case, flats are formed on either side of the tube bottom and there is little or no loss at the bottom (Type A); in the other case, the wastage is concentrated at the bottom and falls off to either side (Type B). Previous explanations for this difference in behaviour have mostly relied on an assumption of a difference in the actual damage process or material response. In this paper, a simple computer simulation shows that Type A behaviour can result from a high degree of constraint on the flow conditions around tubes, and that the introduction of a small degree of flow variability into such a system will lead to Type B behaviour. C1 ELECT POWER RES INST,PALO ALTO,CA 94304. RP MACADAM, SS (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. NR 17 TC 11 Z9 12 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD JUL PY 1995 VL 186 IS 1 BP 325 EP 331 DI 10.1016/0043-1648(95)07186-5 PG 7 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA RW011 UT WOS:A1995RW01100040 ER PT J AU GARRETT, KA AF GARRETT, KA TI SELECTING A SAMPLING METHOD FOR WEED DENSITIES - THE CASE OF WEED REMOVAL IN STRIPS SO WEED SCIENCE LA English DT Article DE AGGREGATION; COMPETITION; SPATIAL DISTRIBUTION; STATISTICS; THINNING ID DECISIONS AB When a range of weed densities is needed for competition experiments, one method of reducing existing populations is to remove all weeds in strips of specified length down the crop row. This technique also can be used to create different sizes of weed clusters. Two methods of sampling weed densities after such thinning were compared: unrestricted sampling (under which quadrats are placed randomly within the row) and restricted sampling (under which quadrats are randomly placed within a row under the restriction that they coincide with the beginning of an infested strip). The bias of estimators of weed density under each of these two approaches was derived and bias-corrected estimators of weed density from the two methods were compared on the basis of their variance. The variance under restricted sampling is less than or equal to the variance under unrestricted sampling so that, by a minimum variance criterion, restricted sampling using a bias correction is the better technique. RP GARRETT, KA (reprint author), UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,PO DRAWER E,AIKEN,SC 29802, USA. NR 11 TC 2 Z9 2 U1 1 U2 1 PU WEED SCI SOC AMER PI CHAMPAIGN PA 309 W CLARK ST, CHAMPAIGN, IL 61820 SN 0043-1745 J9 WEED SCI JI Weed Sci. PD JUL-SEP PY 1995 VL 43 IS 3 BP 394 EP 401 PG 8 WC Agronomy; Plant Sciences SC Agriculture; Plant Sciences GA RR666 UT WOS:A1995RR66600011 ER PT J AU YUAN, SL YANG, ZJ KIMURA, K KADOWAKI, K AF YUAN, SL YANG, ZJ KIMURA, K KADOWAKI, K TI QUANTITATIVE INTERPRETATION OF C-AXIS MAGNETORESISTIVITY FOR FIELDS PARALLEL TO C-AXIS IN SINGLE-CRYSTALLINE LA1.86SR0.14CUO4 SO ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; RESISTIVE TRANSITION; DISSIPATION; TRANSPORT AB The magnetoresistivity, rho(T, B), of single crystalline:La1.86SrO0.14CuO4 as a function of temperature (T) and magnetic field (B) is experimentally studied in a typical Lorentz force free configuration of B//I//c-axis. It is shown that the extended Josephson coupling model recently developed can quantitatively account for the variation in rho(T, B) in a wide transition region (five orders) C1 ARGONNE NATL LAB, ARGONNE, IL 60439 USA. UNIV TOKYO, DEPT APPL CHEM, TOKYO 113, JAPAN. TSUKUBA LABS, NATL RES INST MET, IBARAKI 305, OSAKA, JAPAN. RP YUAN, SL (reprint author), ACAD SINICA, INST PLASMA PHYS, HIGH FIELD MAGNET LAB, POB 1126, HEFEI 230031, PEOPLES R CHINA. NR 17 TC 0 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0722-3277 J9 Z PHYS B CON MAT JI Z. Phys. B-Condens. Mat. PD JUL PY 1995 VL 98 IS 1 BP 23 EP 26 DI 10.1007/BF01318274 PG 4 WC Physics, Condensed Matter SC Physics GA RJ820 UT WOS:A1995RJ82000004 ER PT J AU ADAMS, MR AID, S ANTHONY, PL AVERILL, DA BAKER, MD BALLER, BR BANERJEE, A BHATTI, AA BRATZLER, U BRAUN, HM BREIDUNG, H BUSZA, W CARROLL, TJ CLARK, HL CONRAD, JM DAVISSON, R DERADO, I DHAWAN, SK DIETRICH, FS DOUGHERTY, W DREYER, T ECKARDT, V ECKER, U ERDMANN, M FANG, GY FIGIEL, J FINLAY, RW GEBAUER, HJ GEESAMAN, DF GRIFFIOEN, KA GUO, RS HAAS, J HALLIWELL, C HANTKE, D HICKS, KH HUGHES, VW JACKSON, HE JAFFE, DE JANCSO, G JANSEN, DM JIN, Z KAUFMAN, S KENNEDY, RD KINNEY, ER KIRK, T KOBRAK, HGE KOTWAL, AV KUNORI, S LORD, JJ LUBATTI, HJ MCLEOD, D MADDEN, P MAGILL, S MANZ, A MELANSON, H MICHAEL, DG MONTGOMERY, HE MORFIN, JG NICKERSON, RB NOVAK, J ODAY, S OLKIEWICZ, K OSBORNE, L OTTEN, R PAPAVASSILIOU, V PAWLIK, B PIPKIN, FM POTTERVELD, DH RAMBERG, EJ ROSER, A RYAN, JJ SALGADO, CW SALVARANI, A SCHELLMAN, H SCHMITT, M SCHMITZ, N SCHULER, KP SIEGERT, G SKUJA, A SNOW, GA SOLDNERREMBOLD, S SPENTZOURIS, P STIER, HE STOPA, P SWANSON, RA VENKATARAMANIA, H WILHELM, M WILSON, R WITTEK, W WOLBERS, SA ZGHICHE, A ZHAO, T AF ADAMS, MR AID, S ANTHONY, PL AVERILL, DA BAKER, MD BALLER, BR BANERJEE, A BHATTI, AA BRATZLER, U BRAUN, HM BREIDUNG, H BUSZA, W CARROLL, TJ CLARK, HL CONRAD, JM DAVISSON, R DERADO, I DHAWAN, SK DIETRICH, FS DOUGHERTY, W DREYER, T ECKARDT, V ECKER, U ERDMANN, M FANG, GY FIGIEL, J FINLAY, RW GEBAUER, HJ GEESAMAN, DF GRIFFIOEN, KA GUO, RS HAAS, J HALLIWELL, C HANTKE, D HICKS, KH HUGHES, VW JACKSON, HE JAFFE, DE JANCSO, G JANSEN, DM JIN, Z KAUFMAN, S KENNEDY, RD KINNEY, ER KIRK, T KOBRAK, HGE KOTWAL, AV KUNORI, S LORD, JJ LUBATTI, HJ MCLEOD, D MADDEN, P MAGILL, S MANZ, A MELANSON, H MICHAEL, DG MONTGOMERY, HE MORFIN, JG NICKERSON, RB NOVAK, J ODAY, S OLKIEWICZ, K OSBORNE, L OTTEN, R PAPAVASSILIOU, V PAWLIK, B PIPKIN, FM POTTERVELD, DH RAMBERG, EJ ROSER, A RYAN, JJ SALGADO, CW SALVARANI, A SCHELLMAN, H SCHMITT, M SCHMITZ, N SCHULER, KP SIEGERT, G SKUJA, A SNOW, GA SOLDNERREMBOLD, S SPENTZOURIS, P STIER, HE STOPA, P SWANSON, RA VENKATARAMANIA, H WILHELM, M WILSON, R WITTEK, W WOLBERS, SA ZGHICHE, A ZHAO, T TI SHADOWING IN INELASTIC-SCATTERING OF MUONS ON CARBON, CALCIUM AND LEAD AT LOW X(BJ) SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID CROSS-SECTION; HEAVY-NUCLEI; A-DEPENDENCE; PHOTON; ENHANCEMENT; REGION AB Nuclear shadowing is observed in the per-nucleon cross sections of positive muons on carbon, calcium and lead as compared to deuterium. The data were taken by Fermilab experiment E665 using inelastically scattered muons of mean incident momentum 470 GeV/c. Cross-section ratios are presented in the kinematic region 0.0001 < x(Bj) < 0.56 and 0.1 < Q(2) < 80 GeV2. The data are consistent with no significant nu or Q(2) dependence at fixed x(Bj). As x(Bj) decreases, The size of the shadowing effect, as well as its A dependence, are found to approach the corresponding measurements in photoproduction. C1 UNIV FREIBURG,FREIBURG,GERMANY. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV CALIF SAN DIEGO,SAN DIEGO,CA 92093. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. HARVARD UNIV,CAMBRIDGE,MA 02138. HUNGARIAN ACAD SCI,PARTICLE & NUCL PHYS RES INST,KFKI,H-1525 BUDAPEST,HUNGARY. INST NUCL PHYS,KRAKOW,POLAND. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551. UNIV MARYLAND,COLLEGE PK,MD 20742. MIT,CAMBRIDGE,MA 02139. MAX PLANCK INST PHYS & ASTROPHYS,MUNICH,GERMANY. NORTHWESTERN UNIV,EVANSTON,IL 60208. OHIO UNIV,ATHENS,OH 45701. UNIV PENN,PHILADELPHIA,PA 19104. UNIV WASHINGTON,SEATTLE,WA 98195. UNIV WUPPERTAL,WUPPERTAL,GERMANY. YALE UNIV,NEW HAVEN,CT 06511. RP ADAMS, MR (reprint author), UNIV ILLINOIS,CHICAGO,IL 60607, USA. RI Carroll, Timothy/B-6934-2009 NR 33 TC 111 Z9 111 U1 0 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. Phys. C-Part. Fields PD JUL PY 1995 VL 67 IS 3 BP 403 EP 410 PG 8 WC Physics, Particles & Fields SC Physics GA RT487 UT WOS:A1995RT48700004 ER PT J AU ALEXOPOULOS, T AF ALEXOPOULOS, T TI PHI-MESON PRODUCTION FROM P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID PROTON-ANTIPROTON COLLISIONS; MULTIPLICITY DEPENDENCE; SQUARE-ROOT-S=1.8 TEV; PHASE-TRANSITION; HADRONS; SPECTRUM; MATTER; QUARK AB Fermilab experiment E735 located at the CO intersection region of the root s = 1.8 TeV p ($) over bar p collider analysed over 900 phi --> K+K- events. Measured were the transverse momentum spectrum, the correlation between the average transverse momentum [p(t)] and the charged particle multiplicity N-c, as well as the probability of phi production per charged track, N-phi/N-c, versus N-c. We have also made an estimate of the total inclusive cross section for phi mesons, sigma(p ($) over bar p --> X) = 7.3 +/- 2.2 mb. C1 DEPAUW UNIV,DEPT PHYS,GREENCASTLE,IN 46135. DUKE UNIV,DEPT PHYS,DURHAM,NC 27708. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556. PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907. PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907. RP ALEXOPOULOS, T (reprint author), UNIV WISCONSIN,DEPT PHYS,1150 UNIV AVE,MADISON,WI 53706, USA. NR 18 TC 12 Z9 12 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. Phys. C-Part. Fields PD JUL PY 1995 VL 67 IS 3 BP 411 EP 416 PG 6 WC Physics, Particles & Fields SC Physics GA RT487 UT WOS:A1995RT48700005 ER PT J AU SORGE, H AF SORGE, H TI MASS DEPENDENCE OF HADRON DISTRIBUTIONS IN ULTRARELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID HEAVY-ION COLLISIONS; SULFUR-TUNGSTEN INTERACTIONS; STRANGE PARTICLE-PRODUCTION; LAMBDA-BAR-PRODUCTION; LUND MONTE-CARLO; PROTON-NUCLEUS; 200 GEV/C; OMEGA-PRODUCTION; STOPPING POWER; PHI-PRODUCTION AB (Anti-) baryon and kaon distributions in nucleus-nucleus reactions al 200 AGeV are studied in the framework of the transport model RQMD. Production mechanisms for strangeness and baryon pairs are tested by comparing their projectile and target mass dependence to available experimental data. RQMD contains two collective production processes, fusion of overlapping strings into highly charged chromoelectric ropes and hadronic rescattering. It turns out that both rope formation and hadronic rescattering are of importance for creation - and annihilation - of strangeness and antibaryons. C1 UNIV FRANKFURT,D-60054 FRANKFURT,GERMANY. RP SORGE, H (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. NR 56 TC 33 Z9 33 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. Phys. C-Part. Fields PD JUL PY 1995 VL 67 IS 3 BP 479 EP 487 DI 10.1007/BF01624590 PG 9 WC Physics, Particles & Fields SC Physics GA RT487 UT WOS:A1995RT48700011 ER PT J AU BALCOU, P SALIERES, P BUDIL, KS DITMIRE, T PERRY, MD LHUILLIER, A AF BALCOU, P SALIERES, P BUDIL, KS DITMIRE, T PERRY, MD LHUILLIER, A TI HIGH-ORDER HARMONIC-GENERATION IN RARE-GASES - A NEW SOURCE IN PHOTOIONIZATION SPECTROSCOPY SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article ID OPTICAL OSCILLATOR-STRENGTHS; HIGH-RESOLUTION; ELECTRONIC EXCITATION; RADIATION; FREQUENCY; KRYPTON; LASER; ATOMS; PHOTOABSORPTION; XENON AB We demonstrate that we can use the extreme ultraviolet radiation produced by high order harmonic generation to perform photoionization experiments. With harmonics from the 11th to the 69th of a 140 fs Cr:LiSAF laser operating at 825 nm, we measure the relative photoionization cross sections of xenon, krypton, argon and neon over the range 10 to 110 eV. With narrow bandwidth harmonics produced by a tunable, 1 ps dye laser, we observe the autoionizing states between the 4p(5) ionization thresholds in krypton. C1 CTR ETUD SACLAY,SERV PHOTONS ATOMES & MOLECULES,F-91191 GIF SUR YVETTE,FRANCE. LAWRENCE LIVERMORE NATL LAB,LASER PROGRAM,LIVERMORE,CA 94550. RI SALIERES, Pascal/L-7776-2014; L'Huillier, Anne/P-4379-2015 OI SALIERES, Pascal/0000-0001-5899-8246; L'Huillier, Anne/0000-0002-1335-4022 NR 25 TC 30 Z9 30 U1 0 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0178-7683 J9 Z PHYS D ATOM MOL CL JI Z. Phys. D-Atoms Mol. Clusters PD JUL PY 1995 VL 34 IS 2 BP 107 EP 110 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA RM604 UT WOS:A1995RM60400006 ER PT J AU WANG, J FOSTER, N ARMALIS, S LARSON, D ZIRINO, A OLSEN, K AF WANG, J FOSTER, N ARMALIS, S LARSON, D ZIRINO, A OLSEN, K TI REMOTE STRIPPING ELECTRODE FOR IN-SITU MONITORING OF LABILE COPPER IN THE MARINE-ENVIRONMENT SO ANALYTICA CHIMICA ACTA LA English DT Article DE SENSORS; POTENTIOMETRY; SEA WATER; COPPER; REMOTE ELECTRODE; WATERS ID NATURAL-WATERS; VOLTAMMETRY; SEAWATER AB A remote electrode, operated in the stripping potentiometric mode, is employed for in situ marine surveys of labile copper in bay seawater. The probe relies on a novel electrode assembly, coupled to a long shielded cable, and allows direct immersion of the gold working electrode in seawater. Continuous operation. of the probe from a small boat is used for obtaining the distribution pattern of copper in San Diego Bay. Monitoring of labile copper in the unpolluted water of Sequim Bay (Washington state) is also reported. As desired for metal speciation studies, such a submersible in situ operation is performed without perturbation of the natural equilibria. Laboratory optimization, in situ characterization, and future prospects are described and discussed. C1 USN, CTR OCEAN SYST, MARINE ENVIRONM BRANCH, SAN DIEGO, CA 92152 USA. UABC, CTR INVEST OCEANOL, ENSENADA, BAJA CALIFORNIA, MEXICO. PACIFIC NW LAB, GEOCHEM SECT, RICHLAND, WA 99352 USA. RP WANG, J (reprint author), NEW MEXICO STATE UNIV, DEPT CHEM & BIOCHEM, LAS CRUCES, NM 88003 USA. RI Wang, Joseph/C-6175-2011 NR 13 TC 63 Z9 63 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD JUN 30 PY 1995 VL 310 IS 2 BP 223 EP 231 DI 10.1016/0003-2670(95)00155-S PG 9 WC Chemistry, Analytical SC Chemistry GA RF308 UT WOS:A1995RF30800003 ER PT J AU MARTINO, A KALER, EW AF MARTINO, A KALER, EW TI THE STABILITY OF LAMELLAR PHASES IN WATER, PROPYLENE-GLYCOL, AND SURFACTANT MIXTURES SO COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS LA English DT Article DE LAMELLAR PHASES; PHASE STABILITY; PROPYLENE GLYCOL; SURFACTANT MIXTURES; WATER ID LYOTROPIC LIQUID-CRYSTALS; MICELLE FORMATION; MICRO-EMULSIONS; SOLVENTS; DIAGRAMS; BILAYERS; BROMIDE; SYSTEMS; MICROEMULSIONS; AMPHIPHILES AB The stability of the lamellar phases formed with the anionic surfactant sodium 4-( 1'-heptylnonyl)benzenesulfonate, the cationic surfactant didodecyldimethylammonium bromide, and the nonionic surfactant pentaethylene glycol mono-n-dodecyl ether (C(12)E(5)) is reported as water is gradually replaced with propylene glycol. In all cases, ternary phase diagrams at 25 degrees C show that the lamellar phase disappears as the concentration of propylene glycol increases. The stability of the lamellar phase is a function of the periodic repeat distances and surfactant head group areas as measured by small angle X-ray scattering, and the results are discussed in terms of the inter- and intra-bilayer interactions. Lamellar phases of nonionic surfactant apparently result as a balance between van der Waals attractions and steric repulsions, and become unstable because propylene glycol decreases the value of the Hamaker constant. For ionic surfactants, electrostatic interactions between the lamellae and intra-aggregate interactions are important. Lamellar stability is probably limited by the increase in surfactant head group area. C1 UNIV DELAWARE,COLBURN LAB,DEPT CHEM ENGN,CTR MOLEC & ENGN THERMODYNAM,NEWARK,DE 19716. RP MARTINO, A (reprint author), SANDIA NATL LABS,DEPT FUEL SCI,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 37 TC 24 Z9 24 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-7757 J9 COLLOID SURFACE A JI Colloid Surf. A-Physicochem. Eng. Asp. PD JUN 30 PY 1995 VL 99 IS 2-3 BP 91 EP 99 DI 10.1016/0927-7757(95)03149-8 PG 9 WC Chemistry, Physical SC Chemistry GA RJ457 UT WOS:A1995RJ45700001 ER PT J AU PARK, MS AF PARK, MS TI EXPRESSION OF HUMAN RAD52 CONFERS RESISTANCE TO IONIZING-RADIATION IN MAMMALIAN-CELLS SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Note ID DOUBLE-STRAND BREAKS; SACCHAROMYCES-CEREVISIAE; ESCHERICHIA-COLI; GENETIC-CONTROL; RECOMBINATION; REPAIR; DNA; YEAST; PROTEIN AB Processing of mutagenic DNA damages by the double strand breaks (DSB) in eukaryotes is most likely achieved by multiple pathways, including homologous recombination. Although RAD52 has been shown to be important for DSB repair in yeasts, its role in DSB repair in mammalian cells has not been demonstrated. This study reports for the first time that the overexpression of human RAD52 confers enhanced resistance to gamma-rays and induces homologous intrachromosomal recombination in cultured monkey cells. Recombination frequency synergistically increased by the combination of overexpression of RAD52 and ionizing radiation. These observations suggest that homologous recombination mediated by RAD52 is involved in double-stranded break repair in mammalian cells. RP PARK, MS (reprint author), LOS ALAMOS NATL LAB,DIV LIFE SCI,M888,LOS ALAMOS,NM 87545, USA. NR 34 TC 84 Z9 87 U1 0 U2 0 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD JUN 30 PY 1995 VL 270 IS 26 BP 15467 EP 15470 PG 4 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RG538 UT WOS:A1995RG53800007 PM 7797537 ER PT J AU GREEN, MM PETERSON, NC SATO, T TERAMOTO, A COOK, R LIFSON, S AF GREEN, MM PETERSON, NC SATO, T TERAMOTO, A COOK, R LIFSON, S TI A HELICAL POLYMER WITH A COOPERATIVE RESPONSE TO CHIRAL INFORMATION SO SCIENCE LA English DT Article ID OPTICALLY-ACTIVE POLYISOCYANATES; MACROMOLECULAR STEREOCHEMISTRY; POLY(HEXYL ISOCYANATE); DILUTE-SOLUTION; POLY(NORMAL-ALKYL ISOCYANATES); CONFORMATIONAL CHARACTERISTICS; SEMIFLEXIBLE POLYMERS; LIQUID-CRYSTALS; EQUILIBRIUM; DEUTERIUM AB Polyisocyanates, long studied as theoretical models for wormlike chains in dilute solution and liquid crystals, differ from their biological helical analogs in the absence of a predetermined helical sense, These polymers have an unusual sensitivity to chiral effects that arises from a structure in which alternating right- and left-handed long helical blocks are separated by infrequent and mobile helical reversals, Statistical thermodynamic methods yield an exact description of the polymer and the cooperative nature of its chiral properties, Minute energies that favor one of the helical senses drive easily measurable conformational changes, even though such energies may be extremely difficult to calculate from structural theory, In addition, the chiral nature of the polymer can be used to test theoretical ideas concerned with cholesteric liquid crystals, one of which solves the problem of assigning the helical sense. C1 POLYTECH INST NEW YORK,POLYMER RES INST,BROOKLYN,NY 11201. OSAKA UNIV,FAC SCI,DEPT MACROMOLEC SCI,TOYONAKA,OSAKA 560,JAPAN. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. WEIZMANN INST SCI,DEPT CHEM PHYS,IL-76100 REHOVOT,ISRAEL. RP GREEN, MM (reprint author), POLYTECH INST NEW YORK,DEPT CHEM,6 METROTECH CTR,BROOKLYN,NY 11201, USA. NR 85 TC 685 Z9 690 U1 14 U2 149 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD JUN 30 PY 1995 VL 268 IS 5219 BP 1860 EP 1866 DI 10.1126/science.268.5219.1860 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RF990 UT WOS:A1995RF99000028 PM 17797527 ER PT J AU SCHMIDT, KH HAN, P BARTELS, DM AF SCHMIDT, KH HAN, P BARTELS, DM TI RADIOLYTIC YIELDS OF THE HYDRATED ELECTRON FROM TRANSIENT CONDUCTIVITY - IMPROVED CALCULATION OF THE HYDRATED ELECTRON-DIFFUSION COEFFICIENT AND ANALYSIS OF SOME DIFFUSION-LIMITED (E(-))(AQ) REACTION-RATES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID WATER MIXED-SOLVENTS; TEMPERATURE-DEPENDENCE; AQUEOUS-SOLUTION; RATE CONSTANTS; RADICALS; ENERGY; H2O; D2O; SCAVENGER; HYDROGEN AB We report new high-precision measurements of the radiolytic yields (G values) of hydrated electron from pulse radiolysis of dilute H2O and D2O solutions with 15 MeV electrons in the 4-75 degrees C temperature range. Applied radiation dose was calibrated calorimetrically from the change in conductivity of a phosphate buffer solution. The hydrated electron yield was deduced from the yield of stable HCl product produced with various concentrations of methyl chloride scavenger in the presence of 2-propanol to scavenge H and OH radicals. The rate constant for (e(-))(aq) reaction with MeCl in H2O was measured as 4.66 x 10(8) +/- 3% M(-1) s(-1) at 25 degrees C, with an activation energy of (14.24 +/- 0.49) kJ/mol between 3 and 85 degrees C. In D2O the rate constant was found to be 5.25 x 10(8) +/- 3% M(-1) s(-1) at 25 degrees C. Limiting escape yields of (e(-))(aq) at room temperature were found to be G(esc) = 2.50, 2.58, and 2.66 for 2-propanol concentrations of 0.01, 0.03, and 0.10 M in H2O respectively. The temperature dependence of yields was determined for solutions of 0.01 M 2-propanol and 0.12 EA MeCl in both H2O and D2O. The results are described by (t in degrees C G(e)(H2O) = 2.73 + 3.76 x 10(-3) (t - 25) and G(e)(D2O) = 3.24 + 3.32 x 10(-3) (t - 25). By use of these revised yield measurements, previous experiments to determine the hydrated electron diffusion coefficient (J. Phys. Chem. 1992, 96, 199) could be reanalyzed. The refined values differ only marginally from the original report. In a discussion, we apply electron transfer theory to examine which of the very fast reactions of hydrated electrons can be considered ''diffusion limited''. It is shown that the effective reaction distance for (e(-))(aq) scavenging by nitrobenzene and oxygen changes with temperature as a result of the change in diffusion rate. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 53 TC 61 Z9 61 U1 0 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 29 PY 1995 VL 99 IS 26 BP 10530 EP 10539 DI 10.1021/j100026a016 PG 10 WC Chemistry, Physical SC Chemistry GA RG562 UT WOS:A1995RG56200016 ER PT J AU SCHMIDT, C ROSEN, ME CAPLAN, DF PINES, A QUINTON, MF AF SCHMIDT, C ROSEN, ME CAPLAN, DF PINES, A QUINTON, MF TI ORIENTATION AND MOTION OF TETRAHYDROFURAN IN GRAPHITE-INTERCALATION COMPOUNDS - PROTON NMR-STUDIES OF CS(THF)(1.3)C-24 AND K(THF)(2.5)C-24 SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID SPECTRA; SYSTEM AB The orientation and motion of tetrahydrofuran (THF) in the ternary graphite intercalation compounds Cs-(THF)(1.3)C-24 and K(THF)(2.5)C-24 have been studied by proton NMR. Simulations of the NMR spectra indicate that the THF molecules in CS(THF)(1.3)C-24 have their mean planes oriented parallel to the layers of the host lattice, while the THF molecules in K(THF)(2.5)C-24 have their mean planes oriented at an angle between 50 degrees and 75 degrees from the graphite layers. The proton NMR spectra of both compounds show evidence that the THF molecules rotate about the normal to the graphite layers and confirm X-ray diffraction studies showing a degree of orientational disorder in the samples, corresponding to a mosaic spread in the graphite layer orientation. The conformation of the intercalated THF was studied by simulating the experimental NMR spectra using models for the conformational motion of THF. Simulations indicate that the conformation of intercalated THF is different than gas or liquid phase THF, which has been found to have a ring puckering amplitude of 0.38-0.44 Angstrom and to undergo nearly free pseudorotation through a series of conformations. Best agreement between simulated and experimental NMR spectra of Cs(THF)(1.3)C-24 was Obtained with THF interconverting between two conformations of C-s symmetry and a puckering amplitude of 0.30 Angstrom. Free or slightly hindered pseudorotation of THF (observed in liquid or gaseous THF) in this compound produces simulated spectra that differ significantly from the experimental spectra. Simulated proton NMR spectra of K(THF)(2.5)C-24 using conformations of C-s symmetry or free or slightly hindered pseudorotation of THF do not fit the experimental spectra sufficiently well to allow distinction between the conformational motions or to exclude other possible motions. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DEPT CHEM & MAT SCI,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. ESPCI,PHYS QUANT LAB,CNRS,URA 1428,F-75231 PARIS 05,FRANCE. UNIV FREIBURG,INST MAKROMOLEK CHEM,D-79104 FREIBURG,GERMANY. UNIV MINNESOTA,DEPT CHEM,NMR FACIL,MINNEAPOLIS,MN 55455. RI Schmidt, Claudia/B-2968-2012 OI Schmidt, Claudia/0000-0003-3179-9997 NR 31 TC 5 Z9 5 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 29 PY 1995 VL 99 IS 26 BP 10565 EP 10572 DI 10.1021/j100026a020 PG 8 WC Chemistry, Physical SC Chemistry GA RG562 UT WOS:A1995RG56200020 ER PT J AU AHARONOV, Y AVIGNONE, FT BRODZINSKI, RL COLLAR, JL GARCIA, E MILEY, HS MORALES, A MORALES, J NUSSINOV, S DESOLORZANO, AO PUIMEDON, J REEVES, JH SAENZ, C SALINAS, A SARSA, ML VILLAR, JA AF AHARONOV, Y AVIGNONE, FT BRODZINSKI, RL COLLAR, JL GARCIA, E MILEY, HS MORALES, A MORALES, J NUSSINOV, S DESOLORZANO, AO PUIMEDON, J REEVES, JH SAENZ, C SALINAS, A SARSA, ML VILLAR, JA TI NEW EXPERIMENTAL LIMITS FOR THE ELECTRON STABILITY SO PHYSICS LETTERS B LA English DT Article ID CHARGE CONSERVATION; DARK MATTER; DECAY AB A set of two natural abundance Ge detectors of 1.1 kg each, located in the Homestake mine, and one small, 0.253 kg, Ge detector operating in the Canfranc railway tunnel in Spain, have been used to obtain bounds on the stability of the electron against the decay modes e(-) --> gamma nu(e) and e(-) --> nu(e) nu(e)<(nu)over bar>(e). The bounds on the mean lifes are tau(gamma nu(e)) > 3.7(2.1) X 10(25) yr, 68%(90%) CL and tau(nu(e) nu(e)<(nu)over bar>) > 4.3(2.6) X 10(23) yr, 68%(90%) CL, which are at present the most stringent laboratory limits for these decays. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. UNIV ZARAGOZA, FIS NUCL LAB, E-50009 ZARAGOZA, SPAIN. TEL AVIV UNIV, IL-69978 TEL AVIV, ISRAEL. RP UNIV S CAROLINA, COLUMBIA, SC 29208 USA. RI Sarsa Sarsa, Maria Luisa/K-6108-2014; Villar, Jose Angel/K-6630-2014; OI Sarsa Sarsa, Maria Luisa/0000-0002-7552-1228; Villar, Jose Angel/0000-0003-0228-7589; Garcia Abancens, Eduardo/0000-0002-9827-2332 NR 26 TC 17 Z9 17 U1 0 U2 2 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 JUN 29 PY 1995 VL 353 IS 2-3 BP 168 EP 172 DI 10.1016/0370-2693(95)00514-L PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH496 UT WOS:A1995RH49600002 ER PT J AU JADACH, S PLACZEK, W WARD, BFL AF JADACH, S PLACZEK, W WARD, BFL TI PRECISION CALCULATION OF THE GAMMA-Z INTERFERENCE EFFECT IN THE SLC/LEP LUMINOSITY PROCESS SO PHYSICS LETTERS B LA English DT Article ID ANGLE BHABHA SCATTERING; HARD PHOTON CORRECTIONS; HIGH-ENERGIES; MULTIPLE BREMSSTRAHLUNG; RADIATIVE-CORRECTIONS; GAUGE-THEORIES; SOFT; LEP AB We calculate the O(alpha) YFS exponentiated contribution of the Z boson, delta(Z), to the SLC/LEP luminosity process of low-angle Bhabha scattering, We realize our results via Monte Carlo methods and discuss their role in the theoretical uncertainty of the luminosity measurement. In the angular range 1.5 degrees-3 degrees we estimate the total precision of our results for delta(Z) as 0.015%; in the angular range 3 degrees-6 degrees we estimate the total precision of our results for delta(Z) as 0.09%. This represents a clear improvement over what is currently available in the literature, with which we make many cross-checks. C1 CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND. UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP JADACH, S (reprint author), INST NUCL PHYS,UL KAWIORY 26A,KRAKOW,POLAND. NR 21 TC 25 Z9 25 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 JUN 29 PY 1995 VL 353 IS 2-3 BP 349 EP 361 DI 10.1016/0370-2693(95)00576-7 PG 13 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH496 UT WOS:A1995RH49600029 ER PT J AU JADACH, S RICHTERWAS, E WARD, BFL WAS, Z AF JADACH, S RICHTERWAS, E WARD, BFL WAS, Z TI HIGHER-ORDER RADIATIVE-CORRECTIONS TO LOW-ANGLE BHABHA SCATTERING - THE YFS MONTE-CARLO APPROACH SO PHYSICS LETTERS B LA English DT Article ID QED CORRECTIONS; LEP AB We calculate the QED-corrected integrated cross-section for small-angle Bhabha scattering with kinematical cuts identical to the red experimental cuts at the LEP/SLC experiments: no distinction between electrons and photons is made. We present a new second-order Monte Carlo calculation with the exponentiation of the Yennie-Frautschi-Suura type. It provides the integrated cross-section for the low-angle Bhabha scattering process (theta < 0.060), necessary for the luminosity measurement, with an overall precision of 0.16%. The corresponding computer program BHLUMI 4.01 is in the form of a stand-alone Monte Carlo event generator. The complete and explicit definition of the multiphoton matrix element is given. Examples of numerical results from Monte Carlo phase-space integration are demonstrated and discussed. The analytical integration of the cross section for simplified cuts, keeping terms up to third order, used for cross-checks of the Monte Carlo calculation, is also presented. C1 CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND. JAGIELLONIAN UNIV,INST COMP SCI,KRAKOW,POLAND. UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. RP JADACH, S (reprint author), INST PHYS NUCL LYON,UL KAWIORY 26A,KRAKOW,POLAND. NR 22 TC 46 Z9 46 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD JUN 29 PY 1995 VL 353 IS 2-3 BP 362 EP 372 DI 10.1016/0370-2693(95)00577-8 PG 11 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RH496 UT WOS:A1995RH49600030 ER PT J AU KNILL, E EHRENFEUCHT, A HAUSSLER, D AF KNILL, E EHRENFEUCHT, A HAUSSLER, D TI THE SIZE OF K-PSEUDOTREES SO DISCRETE MATHEMATICS LA English DT Article AB Let X be a finite set. A k-pseudotree on X is a family F of subsets of X such that: (i) X is an element of F and for every x is an element of X, {x} is an element of F;(ii) for every U is an element of F there exists an x is an element of U such that if V is an element of F and X is an element of V, then V is comparable to U; (iii) the intersection of k + 1 pairwise incomparable members of F is empty. The covering graphs of the 1-pseudotrees on an n-set (considered as posets under inclusion) are the directed rooted trees with n leaves and no vertex of outdegree one. It is shown that if k < n, then the maximum cardinality of a k-pseudotree on an n-element set is (k + 1)n -((k + 1)k)/2. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV COLORADO,BOULDER,CO 80309. UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064. NR 6 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0012-365X J9 DISCRETE MATH JI Discret. Math. PD JUN 28 PY 1995 VL 141 IS 1-3 BP 185 EP 194 DI 10.1016/0012-365X(93)E0197-C PG 10 WC Mathematics SC Mathematics GA RH137 UT WOS:A1995RH13700017 ER PT J AU OGATA, T YANAGIDA, S BRUNSCHWIG, BS FUJITA, E AF OGATA, T YANAGIDA, S BRUNSCHWIG, BS FUJITA, E TI MECHANISTIC AND KINETIC-STUDIES OF COBALT MACROCYCLES IN A PHOTOCHEMICAL CO2 REDUCTION SYSTEM - EVIDENCE OF CO-CO2 ADDUCTS AS INTERMEDIATES SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CARBON-DIOXIDE ACTIVATION; TERPHENYL-CATALYZED PHOTOREDUCTION; POLYCYCLIC AROMATIC-HYDROCARBONS; ELECTROCATALYTIC REDUCTION; ELECTROCHEMICAL REDUCTION; NICKEL(II) CYCLAM; COMPLEXES; BINDING; WATER; MEDIATION AB Cobalt macrocycles mediate electron transfer in the photoreduction of CO2 with p-terphenyl as a photosensitizer and a tertiary amine as a sacrificial electron donor in a 5:1 acetonitrile/methanol mixture. The mechanism and kinetics of this system have been studied by continuous and flash photolysis techniques. Transient spectra provide evidence for the sequential formation of the p-terphenyl radical anion, the Co(I)L(+) complex, the [Co(I)L-CO2](+) complex, and the [S-Co(III)L-(CO22-)](+) complex (L = HMD = 5,7,7,12,14,14-hexamethyl-1,4,8,11- tetraazacyclotetradeca-4,11-diene; S = solvent) in the catalytic system. The electron-transfer rate constant for the reaction of p-terphenyl radical anion with Co(II)L(2+) is 1.1 x 10(10) M(-1) s(-1) and probably diffusion controlled because of the large driving force (similar to+1.1 V). Flash photolysis studies yield a rate constant 1.7 x 10(8) M(-1) s(-1) and an equilibrium constant 1.1 x 10(4) M(-1) for the binding of CO2 to Co(I)L(+) in the catalytic system. These are consistent with those previously obtained by conventional methods in acetonitrile. Studies of catalytic systems with varying cobalt macrocycles highlight some of the factors controlling the kinetics of the photoreduction of CO2. Steric hindrance and reduction potentials are important factors in the catalytic activity for photochemical CO2 reduction. C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. OSAKA UNIV,FAC ENGN,SUITA,OSAKA 565,JAPAN. RI Brunschwig, Bruce/G-4249-2011; Fujita, Etsuko/D-8814-2013 NR 61 TC 93 Z9 93 U1 3 U2 42 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD JUN 28 PY 1995 VL 117 IS 25 BP 6708 EP 6716 DI 10.1021/ja00130a009 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA RG540 UT WOS:A1995RG54000009 ER PT J AU LI, KM TODOROVIC, R ROGAN, EG CAVALIERI, EL ARIESE, F SUH, M JANKOWIAK, R SMALL, GJ AF LI, KM TODOROVIC, R ROGAN, EG CAVALIERI, EL ARIESE, F SUH, M JANKOWIAK, R SMALL, GJ TI IDENTIFICATION AND QUANTITATION OF DIBENZO[A,L]PYRENE-DNA ADDUCTS FORMED BY RAT-LIVER MICROSOMES IN-VITRO - PREPONDERANCE OF DEPURINATING ADDUCTS SO BIOCHEMISTRY LA English DT Article ID TUMOR-INITIATING ACTIVITY; ENVIRONMENTAL CARCINOGEN DIBENZOPYRENE; AROMATIC HYDROCARBON CARCINOGENESIS; MOUSE SKIN; MAMMARY-GLAND; ELECTROCHEMICAL OXIDATION; METABOLIC-ACTIVATION; RADICAL CATIONS; BENZOPYRENE; DNA AB Dibenzo[a,l]pyrene (DB[a,l]P) is the most potent carcinogen known among aromatic hydrocarbons. DB[a,l]P-11,12-dihydrodiol, precursor to the bay-region diol epoxide, is slightly less carcinogenic than the parent compound. DB[a,l]P and its 11,12-dihydrodiol were covalently bound to DNA by cytochrome P-450 in 3-methylcholanthrene-induced rat liver microsomes, and DB[a,l]P was also bound to DNA by horseradish peroxidase. The ''stable'' (remaining intact in DN4 under normal conditions of purification) and ''depurinating'' (released from DNA by cleavage of the glycosidic link between the purine base and deoxyribose) adducts were identified and quantified. Stable adducts were analyzed by the P-32-postlabeling technique. Depurinating adducts were identified by comparison of their retention times with those of standard adducts on HPLC in two solvent systems. Confirmation of their identity was obtained by means of fluorescence line-narrowing spectroscopy. When DB[a,l] was activated by horseradish peroxidase, the depurinating adducts 3-(DB[a,l]P-10-yl)adenine (DB[a,l]P-10-N3Ade, 33%), 7-(DB[a,l]P-10-yl)adenine (DB[a,l]P-10-N7Ade, 27%), and 7-DB[a,l]P-10-yl)guanine (DB[a,l]P-10-N7Gua, 5%) were formed. Unidentified stable adducts comprised the remaining 35% of the detected adducts. When DB[a,l]P was activated by microsomes, the one-electron oxidation depurinating adducts DB[a,l]P-10-N3Ade (28%), DB[a,l]P-10-N7Ade (14%), DB[a,l]P-10-N7Gua (2%), and DB[a,l]P-10-C8Gua (6%), as well as the diol epoxide depurinating adducts (+/-)-syn-DB[a,l]P-diol epoxide (DE)-14-N7Ade (31%) and (+/-)-anti-DB[a,l]PDE-14-N7Gua (3%), were formed. Stable adducts predominantly formed via the DB[a,l]PDE pathway represented 16% of the adducts detected. When DB[a,l]P-11,12-dihydrodiol was activated by microsomes, the same two depurinating adducts arising from DB[a,l]PDE were found, but they constituted only 19% of the adducts because the amount of stable adducts was much higher than with DB[a,l]P. Analysis of stable DNA adducts by the P-32-postlabeling method indicates that the profiles formed from DB[a,l]P and its 11,12-dihydrodiol were qualitatively similar. These results demonstrate that the major depurinating adducts formed by both DB[a,l]P and its 11,12-dihydrodiol are at the N-3 and N-7 of adenine, resulting in apurinic sites in the DNA. C1 UNIV NEBRASKA,MED CTR,EPPLEY INST RES CANC,OMAHA,NE 68198. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,US DOE,DEPT CHEM,AMES,IA 50011. FU NCI NIH HHS [P30-CA36727, P01-CA49210, R01-CA49917] NR 36 TC 95 Z9 98 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD JUN 27 PY 1995 VL 34 IS 25 BP 8043 EP 8049 DI 10.1021/bi00025a010 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RG196 UT WOS:A1995RG19600010 PM 7794917 ER PT J AU HIND, G MARSHAK, DR COUGHLAN, SJ AF HIND, G MARSHAK, DR COUGHLAN, SJ TI SPINACH THYLAKOID POLYPHENOL OXIDASE - CLONING, CHARACTERIZATION, AND RELATION TO A PUTATIVE PROTEIN-KINASE SO BIOCHEMISTRY LA English DT Article ID PHOTOSYSTEM-II; GENE; EXPRESSION; MEMBRANE; HEMOCYANIN; TRANSPORT; COMPLEX; PHOSPHORYLATION; PRECURSORS; FERREDOXIN AB A 64-kDa protein was purified from an octyl glucoside/cholate extract of spinach thylakoids. N-Terminal analysis yielded 23 residues of sequence, of which the first 15 were identical to a sequence reported [Gal, A., Hermann, R. G., Lottspeich, F., & Ohad, I. (1999) FEES Lett. 298,; 33-35] for a protein kinase with specificity toward the photosystem II light-harvesting complex (LHC-P). We report the complete sequence of this 64-kDa protein, deduced from cDNA clones. The transit peptide has a chloroplast import signal at the N-terminus and a C-terminal hydrophobic span bounded by basic amino acids that predicts localization of the protein to the thylakoid lumen. The mature protein sequence is about 50% identical to several polyphenol oxidases (PPOs). Canonical protein kinase motifs are absent, as are sequences characteristic of ATP-binding sites. The mature protein resembles arthropodan hemocyanin (Hc), possessing three major domains. The N-terminal domain is rich in cysteine residues and predicted alpha-helices. The central domain has a conserved motif, N-terminal to a presumptive Cu-A site; that is not found in tyrosinases or Hc and is proposed as the provider of a third imidazole ligand to Cu-A. An unusual 13-residue, glutamine-rich link begins a C-terminal domain containing 7 predicted beta-strands which, by analogy with Hc, may form an antiparallel beta-barrel. We conclude that this 64-kDa polypeptide is a lumenal PPO and the precursor of a 42.5-kDa PPO form described previously [Golbeck, J. H., & Cammarata, K. V. (1981) Plant Physiol. 67, 977-984]. In view of its lumenal location and primary sequence, it is unlikely to be a serine/threonine protein kinase. C1 COLD SPRING HARBOR LAB,COLD SPRING HARBOR,NY 11724. RP HIND, G (reprint author), BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973, USA. FU NCI NIH HHS [CA-13107] NR 52 TC 43 Z9 50 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD JUN 27 PY 1995 VL 34 IS 25 BP 8157 EP 8164 DI 10.1021/bi00025a022 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RG196 UT WOS:A1995RG19600022 PM 7794929 ER PT J AU ZIEGLER, R JASENSKY, RD MORIMOTO, H AF ZIEGLER, R JASENSKY, RD MORIMOTO, H TI CHARACTERIZATION OF THE ADIPOKINETIC HORMONE-RECEPTOR FROM THE FAT-BODY OF MANDUCA-SEXTA SO REGULATORY PEPTIDES LA English DT Article DE RECEPTOR BINDING; AKH; INSECT; HEART; BRAIN; FLIGHT MUSCLE; PTEROTHORACIC GANGLION ID CORPORA CARDIACA; GLYCOGEN-PHOSPHORYLASE; TOBACCO HORNWORM; METABOLISM; FLIGHT; LARVAE AB A tritium labeled Manduca sexta adipokinetic hormone (M-AKH) was synthesized (pE-L-T-[p(3)H]F-T-S-S-W-G-NH2) (specific activity 27 Ci/mmol) which was fully active in a bioassay. It was used in a filtration based binding assay to characterize the M-AKH receptor from the fat body of M. sexta. Membrane fractions were prepared from fat body and optimal binding conditions were determined. A K-d of 7 . 10(-10) M was determined and the receptor concentration estimated to be 0.5 pmol/mg membrane protein. No receptor binding was found when membranes were prepared from brain, heart or Right muscle of M. sexta or from fat body of the cockroach Blaberus discoidalis. However, specific binding was found with membrane preparations from the pterothoracic ganglion of M. sexta. The membranes from the ganglion had a much smaller number of binding sites than the fat body membranes, however, the binding was specific and observed in each experiment. C1 UNIV ARIZONA,CTR INSECT SCI,TUCSON,AZ 85721. UNIV ARIZONA,ARIZONA RES LABS,DIV BIOTECHNOL,TUCSON,AZ 85721. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV STRUCT BIOL,NATL TRITIUM LABELLING FACIL,BERKELEY,CA 94720. RP ZIEGLER, R (reprint author), UNIV ARIZONA,DEPT BIOCHEM,TUCSON,AZ 85721, USA. FU NCRR NIH HHS [P41 RR01237]; NIAID NIH HHS [AI 26905]; NIGMS NIH HHS [GM 29238] NR 37 TC 46 Z9 46 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-0115 J9 REGUL PEPTIDES JI Regul. Pept. PD JUN 27 PY 1995 VL 57 IS 3 BP 329 EP 338 DI 10.1016/0167-0115(95)00046-E PG 10 WC Endocrinology & Metabolism; Physiology SC Endocrinology & Metabolism; Physiology GA RH097 UT WOS:A1995RH09700014 PM 7480882 ER PT J AU MAR, A HELKEY, R ZOU, WX YOUNG, DB BOWERS, JE AF MAR, A HELKEY, R ZOU, WX YOUNG, DB BOWERS, JE TI HIGH-POWER MODE-LOCKED SEMICONDUCTOR-LASERS USING FLARED WAVE-GUIDES SO APPLIED PHYSICS LETTERS LA English DT Article ID PULSE GENERATION; AMPLIFIER C1 MIT,LINCOLN LAB,LEXINGTON,MA 02173. AMP INC,DEPT OPT INTERCONNECT TECHNOL,HARRISBURG,PA 17105. UNIV CALIF SANTA BARBARA,DEPT ELECT & COMP ENGN,SANTA BARBARA,CA 93106. RP MAR, A (reprint author), SANDIA NATL LABS,PHOTON RES DEPT,MS 0603,ALBUQUERQUE,NM 87185, USA. RI Bowers, John/B-3486-2012 OI Bowers, John/0000-0003-4270-8296 NR 10 TC 14 Z9 15 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 26 PY 1995 VL 66 IS 26 BP 3558 EP 3560 DI 10.1063/1.113786 PG 3 WC Physics, Applied SC Physics GA RE742 UT WOS:A1995RE74200006 ER PT J AU KEPLER, RG BEESON, PM JACOBS, SJ ANDERSON, RA SINCLAIR, MB VALENCIA, VS CAHILL, PA AF KEPLER, RG BEESON, PM JACOBS, SJ ANDERSON, RA SINCLAIR, MB VALENCIA, VS CAHILL, PA TI ELECTRON AND HOLE MOBILITY IN TRIS(8-HYDROXYQUINALINOLATO-N1,O8) ALUMINUM SO APPLIED PHYSICS LETTERS LA English DT Article ID POLYMERS; ELECTROLUMINESCENCE; TRANSPORT; DIODES C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 9 TC 357 Z9 378 U1 0 U2 20 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 26 PY 1995 VL 66 IS 26 BP 3618 EP 3620 DI 10.1063/1.113806 PG 3 WC Physics, Applied SC Physics GA RE742 UT WOS:A1995RE74200026 ER PT J AU FINDIKOGLU, AT JIA, QX CAMPBELL, IH WU, XD REAGOR, D MOMBOURQUETTE, CB MCMURRY, D AF FINDIKOGLU, AT JIA, QX CAMPBELL, IH WU, XD REAGOR, D MOMBOURQUETTE, CB MCMURRY, D TI ELECTRICALLY TUNABLE COPLANAR TRANSMISSION-LINE RESONATORS USING YBA2CU3O7-X/SRTIO3 BILAYERS SO APPLIED PHYSICS LETTERS LA English DT Article ID MICROWAVE C1 LOS ALAMOS NATL LAB,CTR SUPERCONDUCT TECHNOL,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545. RI Jia, Q. X./C-5194-2008 NR 13 TC 95 Z9 95 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 26 PY 1995 VL 66 IS 26 BP 3674 EP 3676 DI 10.1063/1.114137 PG 3 WC Physics, Applied SC Physics GA RE742 UT WOS:A1995RE74200045 ER PT J AU BERDAHL, P RUSSO, RE READE, RP AF BERDAHL, P RUSSO, RE READE, RP TI SUPERCONDUCTING TAPES SO CHEMICAL & ENGINEERING NEWS LA English DT Letter RP BERDAHL, P (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 3 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0009-2347 J9 CHEM ENG NEWS JI Chem. Eng. News PD JUN 26 PY 1995 VL 73 IS 26 BP 5 EP 5 PG 1 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA RF354 UT WOS:A1995RF35400006 ER PT J AU LAFOSSE, DR SARANTITES, DG BAKTASH, C HUA, PF CEDERWALL, B FALLON, P GROSS, CJ JIN, HQ KOROLIJA, M LEE, IY MACCHIAVELLI, AO MAIER, MR RATHBUN, W STRACENER, DW WERNER, TR AF LAFOSSE, DR SARANTITES, DG BAKTASH, C HUA, PF CEDERWALL, B FALLON, P GROSS, CJ JIN, HQ KOROLIJA, M LEE, IY MACCHIAVELLI, AO MAIER, MR RATHBUN, W STRACENER, DW WERNER, TR TI EVIDENCE FOR HYPERDEFORMATION IN GD-147 SO PHYSICAL REVIEW LETTERS LA English DT Article ID ROTATING NUCLEI; SHAPE; SUPERDEFORMATION; LINE C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. WASHINGTON UNIV,DEPT PHYS,ST LOUIS,MO 63130. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. UNISOR,OAK RIDGE INST SCI & EDUC,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996. UNIV WARSAW,INST THEORET PHYS,PL-00681 WARSAW,POLAND. RP LAFOSSE, DR (reprint author), WASHINGTON UNIV,DEPT CHEM,ST LOUIS,MO 63130, USA. RI Cederwall, Bo/M-3337-2014 OI Cederwall, Bo/0000-0003-1771-2656 NR 22 TC 34 Z9 34 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 26 PY 1995 VL 74 IS 26 BP 5186 EP 5189 DI 10.1103/PhysRevLett.74.5186 PG 4 WC Physics, Multidisciplinary SC Physics GA RF049 UT WOS:A1995RF04900009 ER PT J AU ADAMS, MR AID, S ANTHONY, PL AVERILL, DA BAKER, MD BALLER, BR BANERJEE, A BHATTI, AA BRATZLER, U BRAUN, HM BREIDUNG, H BUSZA, W CARROLL, TJ CLARK, HL CONRAD, JM DAVISSON, R DERADO, I DHAWAN, SK DIETRICH, FS DOUGHERTY, W DREYER, T ECKARDT, V ECKER, U ERDMANN, M FANG, GY FIGIEL, J FINLAY, RW GEBAUER, HJ GEESAMAN, DF GRIFFIOEN, KA GUO, RS HAAS, J HALLIWELL, C HANTKE, D HICKS, KH HUGHES, VW JACKSON, HE JAFFE, DE JANCSO, G JANSEN, DM JIN, Z KAUFMAN, S KENNEDY, RD KINNEY, ER KIRK, T KOBRAK, HGE KOTWAL, AV KUNORI, S LORD, JJ LUBATTI, HJ MCLEOD, D MADDEN, P MAGILL, S MANZ, A MELANSON, H MICHAEL, DG MONTGOMERY, HE MORFIN, JG NICKERSON, RB ODAY, S OLKIEWICZ, K OSBORNE, L OTTEN, R PAPAVASSILIOU, V PAWLIK, B PIPKIN, FM POTTERVELD, DH RAMBERG, EJ ROSER, A RYAN, JJ SALGADO, CW SALVARANI, A SCHELLMAN, H SCHMITT, M SCHMITZ, N SCHULER, KP SIEGERT, G SKUJA, A SNOW, GA SOLDNERREMBOLD, S SPENTZOURIS, P STIER, HE STOPA, P SWANSON, RA VENKATARAMANIA, H WILHELM, M WILSON, R WITTEK, W WOLBERS, SA ZGHICHE, A ZHAO, T AF ADAMS, MR AID, S ANTHONY, PL AVERILL, DA BAKER, MD BALLER, BR BANERJEE, A BHATTI, AA BRATZLER, U BRAUN, HM BREIDUNG, H BUSZA, W CARROLL, TJ CLARK, HL CONRAD, JM DAVISSON, R DERADO, I DHAWAN, SK DIETRICH, FS DOUGHERTY, W DREYER, T ECKARDT, V ECKER, U ERDMANN, M FANG, GY FIGIEL, J FINLAY, RW GEBAUER, HJ GEESAMAN, DF GRIFFIOEN, KA GUO, RS HAAS, J HALLIWELL, C HANTKE, D HICKS, KH HUGHES, VW JACKSON, HE JAFFE, DE JANCSO, G JANSEN, DM JIN, Z KAUFMAN, S KENNEDY, RD KINNEY, ER KIRK, T KOBRAK, HGE KOTWAL, AV KUNORI, S LORD, JJ LUBATTI, HJ MCLEOD, D MADDEN, P MAGILL, S MANZ, A MELANSON, H MICHAEL, DG MONTGOMERY, HE MORFIN, JG NICKERSON, RB ODAY, S OLKIEWICZ, K OSBORNE, L OTTEN, R PAPAVASSILIOU, V PAWLIK, B PIPKIN, FM POTTERVELD, DH RAMBERG, EJ ROSER, A RYAN, JJ SALGADO, CW SALVARANI, A SCHELLMAN, H SCHMITT, M SCHMITZ, N SCHULER, KP SIEGERT, G SKUJA, A SNOW, GA SOLDNERREMBOLD, S SPENTZOURIS, P STIER, HE STOPA, P SWANSON, RA VENKATARAMANIA, H WILHELM, M WILSON, R WITTEK, W WOLBERS, SA ZGHICHE, A ZHAO, T TI NUCLEAR DECAY FOLLOWING DEEP-INELASTIC SCATTERING OF 470 GEV MUONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID HADRONS; COLLISIONS; LEPTOPRODUCTION; FRAGMENTATION; EFFICIENCY; TARGETS; SPECTRA C1 UNIV FREIBURG, FREIBURG, GERMANY. ARGONNE NATL LAB, ARGONNE, IL 60439 USA. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92093 USA. FERMILAB NATL ACCELERATOR LAB, BATAVIA, IL 60510 USA. HARVARD UNIV, CAMBRIDGE, MA 02138 USA. INST NUCL PHYS, KRAKOW, POLAND. LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94551 USA. UNIV MARYLAND, COLLEGE PK, MD 20742 USA. MIT, CAMBRIDGE, MA 02139 USA. MAX PLANCK INST PHYS & ASTROPHYS, MUNICH, GERMANY. NORTHWESTERN UNIV, EVANSTON, IL 60208 USA. OHIO UNIV, ATHENS, OH 45701 USA. UNIV PENN, PHILADELPHIA, PA 19104 USA. UNIV WASHINGTON, SEATTLE, WA 98195 USA. YALE UNIV, NEW HAVEN, CT 06510 USA. UNIV GESAMTHSCH WUPPERTAL, W-5600 WUPPERTAL, GERMANY. RP UNIV ILLINOIS, CHICAGO, IL 60680 USA. RI Carroll, Timothy/B-6934-2009 NR 36 TC 14 Z9 14 U1 1 U2 2 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 JUN 26 PY 1995 VL 74 IS 26 BP 5198 EP 5201 DI 10.1103/PhysRevLett.74.5198 PG 4 WC Physics, Multidisciplinary SC Physics GA RF049 UT WOS:A1995RF04900012 ER PT J AU ALEXANDER, FJ GARCIA, AL ALDER, BJ AF ALEXANDER, FJ GARCIA, AL ALDER, BJ TI A CONSISTENT BOLTZMANN ALGORITHM SO PHYSICAL REVIEW LETTERS LA English DT Article ID MONTE-CARLO METHOD; HARD-SPHERE FLUID; EQUATION C1 SAN JOSE STATE UNIV,DEPT PHYS,SAN JOSE,CA 95192. RP ALEXANDER, FJ (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 16 TC 77 Z9 81 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 JUN 26 PY 1995 VL 74 IS 26 BP 5212 EP 5215 DI 10.1103/PhysRevLett.74.5212 PG 4 WC Physics, Multidisciplinary SC Physics GA RF049 UT WOS:A1995RF04900016 ER PT J AU TESSAROTTO, M CHANCE, M WHITE, RB ZHENG, LJ AF TESSAROTTO, M CHANCE, M WHITE, RB ZHENG, LJ TI EXTENDED REPRESENTATION FOR BALLOONING MODES IN THE PRESENCE OF SHEAR FLOWS SO PHYSICS LETTERS A LA English DT Article ID TRANSPORT; PLASMA AB Previous representations of toroidal eigenmodes in the presence of shear flows are pointed out to give rise to a secular time behaviour for perturbations with sufficiently small perpendicular wavelengths. The purpose of this paper is to present an extended ballooning representation, properly accounting for the effects of strong toroidal rotation as well as of differential rotation and correcting such a deficiency. The basic feature of the perturbation is that it exactly satisfies all the dynamical constraints and, in particular, it is periodic in time with a global period (i.e., independent of position). C1 PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08543. RP TESSAROTTO, M (reprint author), UNIV TRIESTE,DEPT MATH SCI,I-34127 TRIESTE,ITALY. RI White, Roscoe/D-1773-2013 OI White, Roscoe/0000-0002-4239-2685 NR 16 TC 0 Z9 0 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD JUN 26 PY 1995 VL 202 IS 4 BP 288 EP 296 DI 10.1016/0375-9601(95)00291-A PG 9 WC Physics, Multidisciplinary SC Physics GA RG329 UT WOS:A1995RG32900008 ER PT J AU HORWITZ, EP DIETZ, ML CHIARIZIA, R DIAMOND, H MAXWELL, SL NELSON, MR AF HORWITZ, EP DIETZ, ML CHIARIZIA, R DIAMOND, H MAXWELL, SL NELSON, MR TI SEPARATION AND PRECONCENTRATION OF ACTINIDES BY EXTRACTION CHROMATOGRAPHY USING A SUPPORTED LIQUID ANION-EXCHANGER - APPLICATION TO THE CHARACTERIZATION OF HIGH-LEVEL NUCLEAR WASTE SOLUTIONS SO ANALYTICA CHIMICA ACTA LA English DT Article DE CHROMATOGRAPHY; ION EXCHANGE; PRECONCENTRATION; ACTINIDES; NUCLEAR WASTE ID FISSION-PRODUCTS; ACIDIC MEDIA; STRONTIUM; URANIUM; RESIN; SR-90 AB A novel extraction chromatographic resin comprised of a quaternary amine-based liquid anion exchanger sorbed on an inert polymeric substrate for the sorption of actinides from nitric and hydrochloric acids is described. The resin is shown to exhibit preferential retention of tetravalent actinides over a wide range of acidities. The application of this material to the separation and preconcentration of selected actinides from high level nuclear waste solutions for subsequent determination is described. C1 WESTINGHOUSE SAVANNAH RIVER CO,AIKEN,SC 29809. RP HORWITZ, EP (reprint author), ARGONNE NATL LAB,DIV CHEM,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 32 TC 258 Z9 268 U1 7 U2 55 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD JUN 25 PY 1995 VL 310 IS 1 BP 63 EP 78 DI 10.1016/0003-2670(95)00144-O PG 16 WC Chemistry, Analytical SC Chemistry GA RE616 UT WOS:A1995RE61600006 ER PT J AU BECHTEL, SE COOPER, JA FOREST, MG PETERSSON, NA REICHARD, DL SALEH, A VENKATARAMANAN, V AF BECHTEL, SE COOPER, JA FOREST, MG PETERSSON, NA REICHARD, DL SALEH, A VENKATARAMANAN, V TI A NEW MODEL TO DETERMINE DYNAMIC SURFACE-TENSION AND ELONGATIONAL VISCOSITY USING OSCILLATING JET MEASUREMENTS SO JOURNAL OF FLUID MECHANICS LA English DT Article ID AIR WATER INTERFACE; ADSORPTION-KINETICS; DROPS; BREAKUP AB We present an integro-differential equation model which, combined with experimental measurements of an oscillating free surface jet, calculates dynamic surface tension and elongational viscosity of a fluid. Our model builds upon previous models due to Rayleigh and Bohr in that it self-consistently incorporates the effects of viscosity and gravity. Further, surface tension and viscosity are allowed to be non-constant. The principal result of this paper is a technique for the measurement of surface tension of newly forming surfaces on the millisecond timescale relevant for agricultural spray mixtures. Coincidentally, our model independently yields the elongational viscosity of the fluid, although our present experimental apparatus limits the accuracy of measurement of this material property. In this paper we take measurements from physical jet experiments and implement our inverse model to deduce these material properties. The model is first benchmarked against standard techniques on a well-characterized fluid with constant surface tension and Newtonian viscosity. We then apply our method to an agricultural spray mixture, with non-constant surface tension and non-Newtonian theology. We measure (i) the rapid decay of surface tension from the newly formed surface (aged less than a millisecond) to the much lower equilibrium value, and (ii) the rate dependence of elongational viscosity. C1 OHIO STATE UNIV, DEPT MATH, COLUMBUS, OH 43210 USA. OHIO STATE UNIV, DEPT CIVIL ENGN, COLUMBUS, OH 43210 USA. USDA ARS, WOOSTER, OH 44691 USA. LOS ALAMOS NATL LAB, CTR NONLINEAR STUDIES, LOS ALAMOS, NM 87545 USA. RP OHIO STATE UNIV, DEPT ENGN MECH, COLUMBUS, OH 43210 USA. NR 50 TC 23 Z9 23 U1 1 U2 10 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0022-1120 EI 1469-7645 J9 J FLUID MECH JI J. Fluid Mech. PD JUN 25 PY 1995 VL 293 BP 379 EP 403 DI 10.1017/S0022112095001753 PG 25 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RG541 UT WOS:A1995RG54100016 ER PT J AU LEBEDEV, YB VOLIK, SV OBRADOVIC, D ERMOLAEVA, OD ASHWORTH, LK LENNON, GG SVERDLOV, ED AF LEBEDEV, YB VOLIK, SV OBRADOVIC, D ERMOLAEVA, OD ASHWORTH, LK LENNON, GG SVERDLOV, ED TI PHYSICAL MAPPING OF SEQUENCES HOMOLOGOUS TO AN ENDOGENOUS RETROVIRUS LTR ON HUMAN-CHROMOSOME-19 SO MOLECULAR & GENERAL GENETICS LA English DT Article DE CHROMOSOME MAPPING; HNCDNA LIBRARY; HUMAN CHROMOSOME 19; SOLITARY LTR; TRANSCRIPTIONAL REGULATION ID LONG TERMINAL REPEATS; DNA-POLYMERASE-DELTA; SOMATIC-CELL HYBRIDS; INSITU HYBRIDIZATION; GENE; ELEMENTS; SUBUNIT; PROTEIN; MAPS AB The human genome contains multiple copies of sequences related to the HERV-K family of endogenous retroviruses, homologous to the B-type mouse mammary tumour virus. A DNA fragment closely resembling an HERV-K long tandem repeat (LTR) was detected in a library of hncDNA clones enriched for sequences from human chromosome 19. Sites showing homology to the sequence of this fragment have been identified on human chromosome 19 by hybridization to previously mapped chromosome 19 cosmids. Thus the distribution of LTR sequences on a specific human chromosome has been mapped for the first time. We estimate the total number of such sites on human chromosome 19 to be at least 110. Many of these sites are located in the vicinity of known genes. The precise localizations (to specific cosmids) of LTR-homologous sequences on chromosome 19 can serve as a reference source and will automatically provide further insight into LTR-gene relationships as new genes are mapped onto the chromosome. C1 RUSSIAN ACAD SCI,SHEMYAKIN OVCHINNIKOV INST BIOORGAN CHEM,MOSCOW 117871,RUSSIA. LAWRENCE LIVERMORE NATL LAB,CTR HUMAN GENOME,LIVERMORE,CA 94550. RI Lebedev, Yuri/G-6738-2012 OI Lebedev, Yuri/0000-0003-4554-4733 NR 27 TC 18 Z9 18 U1 0 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0026-8925 J9 MOL GEN GENET JI Mol. Gen. Genet. PD JUN 25 PY 1995 VL 247 IS 6 BP 742 EP 748 DI 10.1007/BF00290406 PG 7 WC Biochemistry & Molecular Biology; Genetics & Heredity SC Biochemistry & Molecular Biology; Genetics & Heredity GA RJ778 UT WOS:A1995RJ77800011 PM 7616966 ER PT J AU ANDREWS, A AF ANDREWS, A TI THE ROCKET MAN SO NEW SCIENTIST LA English DT Article RP ANDREWS, A (reprint author), SANDIA NATL LABS,LIVERMORE,CA 94550, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NEW SCIENTIST PUBL EXPEDITING INC PI ELMONT PA 200 MEACHAM AVE, ELMONT, NY 11003 SN 0262-4079 J9 NEW SCI JI New Sci. PD JUN 24 PY 1995 VL 146 IS 1983 BP 26 EP 30 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RF736 UT WOS:A1995RF73600032 ER PT J AU LIU, JH GAGNON, Y GAUTHIER, J FURENLID, L LHEUREUX, P AUGER, M NUREKI, O YOKOYAMA, S LAPOINTE, J AF LIU, JH GAGNON, Y GAUTHIER, J FURENLID, L LHEUREUX, P AUGER, M NUREKI, O YOKOYAMA, S LAPOINTE, J TI THE ZINC-BINDING SITE OF ESCHERICHIA-COLI GLUTAMYL-TRANSFER-RNA SYNTHETASE IS LOCATED IN THE ACCEPTOR-BINDING DOMAIN - STUDIES BY EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE, MOLECULAR MODELING, AND SITE-DIRECTED MUTAGENESIS SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID TRANSFER-RNA-SYNTHETASE; THERMUS-THERMOPHILUS HB8; ISOLEUCYL-TRANSFER-RNA; GLTX-GENE; EXTREME THERMOPHILE; CLONING; PROTEIN; SEQUENCE; OVERPRODUCTION; METALLOPROTEIN AB The zinc contents of fragments of Escherichia coli glutamyl-tRNA synthetase, as well as the conservation of the CYC sequence only in zinc-containing glutamyl-tRNA synthetases, suggested that the (98)CYCX(24),,CRHSHEHHADDEPC(138) includes some or all residues involved in binding its zinc atom (Liu, J., Lin, S.-X., Blochet, J.-E., Pezolet, M., and Lapointe, J. (1993) Biochemistry 32, 11390-11396). Extended x-ray absorption fine structure (EXAFS) shows that this zinc atom has a four-coordinate non-planar coordination environment with 3 sulfur and 1 nitrogen atoms with bond lengths, respectively, 2.37 +/- 0.02 Angstrom and 2.01 +/- 0.02 Angstrom, presumably belonging to and cysteine residues and 1 histidine residue. Conservative replacement of each histidine and cysteine residue of the C-98-C-138 segment, respectively, with glutamine (Q) and serine (S), yields variants H129Q, H131Q, H132Q, and C138S (which sustain the growth at 42 degrees C of E. coli JP1449, whose glutamyl-tRNA synthetase is thermosensitive) and C98S, C100S, C125S, and H127Q (which do not). The amount of this enzyme in these mutants is at least 1 order of magnitude larger than that in a wild type strain; however, no glutamyl-tRNA synthetase activity is detectable in extracts of the variants C100S and C125S, whereas its specific activity in those of C98S and H127Q is about 10-fold lower than in cells overproducing the wild type enzyme or the variants H129Q, H131Q, H132Q, and C138S. These results indicate that the zinc atom present in E. coli glutamyl-tRNA synthetase is bound by the 2 evolutionarily conserved cysteines at positions 98 and 100, and by Cys(125) and His(127). Molecular modeling of the N-terminal half of this enzyme, using the known structure of E. coli glutaminyl-tRNA synthetase, supports this conclusion and suggests that the C-98-H-127 segment does not have the characteristics of the classical zinc fingers. C1 UNIV LAVAL, FAC SCI & GENIE, DEPT BIOCHIM, QUEBEC CITY, PQ G1K 7P4, CANADA. UNIV LAVAL, FAC SCI & GENIE, DEPT CHIM, QUEBEC CITY, PQ G1K 7P4, CANADA. BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. UNIV TOKYO, FAC SCI, DEPT BIOPHYS & BIOCHEM, BUNKYO KU, TOKYO 113, JAPAN. RI Yokoyama, Shigeyuki/N-6911-2015 OI Yokoyama, Shigeyuki/0000-0003-3133-7338 NR 55 TC 28 Z9 29 U1 0 U2 0 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA SN 0021-9258 EI 1083-351X J9 J BIOL CHEM JI J. Biol. Chem. PD JUN 23 PY 1995 VL 270 IS 25 BP 15162 EP 15169 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RE666 UT WOS:A1995RE66600049 PM 7797500 ER PT J AU PAUL, S LI, L KALAGA, R WILKINSSTEVENS, P STEVENS, FJ SOLOMON, A AF PAUL, S LI, L KALAGA, R WILKINSSTEVENS, P STEVENS, FJ SOLOMON, A TI NATURAL CATALYTIC ANTIBODIES - PEPTIDE-HYDROLYZING ACTIVITIES OF BENCE-JONES PROTEINS AND V-L FRAGMENT SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID VASOACTIVE-INTESTINAL-PEPTIDE; LIGHT-CHAINS; LAMBDA-CHAIN; AUTOANTIBODIES; SITES; IMMUNOGLOBULINS; BINDING; MYELOMA; SERUM; CELLS AB Monoclonal human light chains, i.e. Pence Jones proteins, and their recombinant variable fragments (V-L) were screened for proteolytic activity using peptide-methylcoumarinamide (peptide-MCA) conjugates and vasoactive intestinal polypeptide (VIP) as substrates. Sixteen of 21 Pence Jones proteins and one of three V-L fragments were capable of detectable cleavage of one or more substrates. The magnitude and kinetic characteristics of the activity varied with different substrates. Among the peptide-MCA substrates, the presence of tripeptide or tetrapeptide moieties with a basic residue at the scissile bond generally favored expression of the activity. The influence of N-terminal flanking residue recognition was evident from differing values of K-m and k(cat) (turnover number) observed using different Arg-containing peptide-MCA substrates. Different light chains displayed different kinetic parameters for the same substrate, suggesting unique catalytic sites. Hydrolysis of VIP was characterized by nanomolar Michaelis-Menten constants (K-m), suggesting comparatively high affinity recognition of this peptide, The 25-kDa monomer and the 50-kDa dimer forms of one light chain preparation were resolved by gel filtration in 6 M guanidine hydrochloride, Following renaturation, the monomer displayed 51-fold greater peptide-MCA-hydrolyzing activity than the dimer. A renatured V-L domain prepared by gel filtration in 6 M guanidine hydrochloride displayed VIP-hydrolyzing activity in the 12.5-kDa peak fractions. These results provide evidence for the proteolytic activity of certain human light chains and imply that this phenomenon may have a pathophysiological significance. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV TENNESSEE,MED CTR,KNOXVILLE,TN 37920. HUMAN IMMUNOL & CANC PROGRAM,KNOXVILLE,TN 37920. RP PAUL, S (reprint author), UNIV NEBRASKA,MED CTR,DEPT ANESTHESIOL,600 S 42ND ST,OMAHA,NE 68198, USA. FU NCI NIH HHS [CA10056]; NIAID NIH HHS [AI31268]; NIDDK NIH HHS [DK43757] NR 34 TC 102 Z9 109 U1 0 U2 1 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD JUN 23 PY 1995 VL 270 IS 25 BP 15257 EP 15261 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RE666 UT WOS:A1995RE66600062 PM 7797511 ER PT J AU XIANG, XD SUN, XD BRICENO, G LOU, YL WANG, KA CHANG, HY WALLACEFREEDMAN, WG CHEN, SW SCHULTZ, PG AF XIANG, XD SUN, XD BRICENO, G LOU, YL WANG, KA CHANG, HY WALLACEFREEDMAN, WG CHEN, SW SCHULTZ, PG TI A COMBINATORIAL APPROACH TO MATERIALS DISCOVERY SO SCIENCE LA English DT Article ID SYNTHETIC PEPTIDE LIBRARY; CATALYTIC ANTIBODIES; CHEMISTRY; LIGANDS; SUPERCONDUCTORS; GENERATION; MOLECULES; PHAGE AB A method that combines thin film deposition and physical masking techniques has been used for the parallel synthesis of spatially addressable libraries of solid-state materials. Arrays containing different combinations, stoichiometries, and deposition sequences of BaCO3, Bi2O3, CaO, CuO, PbO, SrCO3, and Y2O3 were generated with a series of binary masks. The arrays were sintered and BiSrCaCuO and YBaCuO superconducting films were identified. Samples as small as 200 micrometers by 200 micrometers in size were generated, corresponding to library densities of 10,000 sites per square inch. The ability to generate and screen combinatorial libraries of solid-state compounds, when coupled with theory and empirical observations, may significantly increase the rate at which novel electronic, magnetic, and optical materials are discovered and theoretical predictions tested. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RP XIANG, XD (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,INST MOLEC DESIGN,BERKELEY,CA 94720, USA. RI Xiang, Xiaodong/A-9445-2012; Wang, Kejin/A-1675-2017; Xiang, Xiaodong/A-5936-2017 OI Wang, Kejin/0000-0002-7466-3451; NR 26 TC 692 Z9 729 U1 27 U2 214 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD JUN 23 PY 1995 VL 268 IS 5218 BP 1738 EP 1740 DI 10.1126/science.268.5218.1738 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RE668 UT WOS:A1995RE66800038 PM 17834993 ER PT J AU WANG, LS CHENG, HS FAN, JW AF WANG, LS CHENG, HS FAN, JW TI PHOTOELECTRON-SPECTROSCOPY OF SIZE-SELECTED TRANSITION-METAL CLUSTERS - FE-N(-) SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SMALL IRON CLUSTERS; LYING ELECTRONIC STATES; IONIZATION-POTENTIALS; STRUCTURAL DEPENDENCE; MAGNETIC-PROPERTIES; CHEMICAL PROBES; NICKEL CLUSTERS; BINDING-ENERGY; CHEMISORPTION; HYDROGEN C1 PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, RICHLAND, WA 99352 USA. AIR PROD & CHEM INC, ALLENTOWN, PA 18195 USA. RP WANG, LS (reprint author), WASHINGTON STATE UNIV, DEPT PHYS, RICHLAND, WA 99352 USA. NR 69 TC 322 Z9 323 U1 1 U2 24 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 22 PY 1995 VL 102 IS 24 BP 9480 EP 9493 DI 10.1063/1.468817 PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD332 UT WOS:A1995RD33200004 ER PT J AU BERNHOLDT, DE HARRISON, RJ AF BERNHOLDT, DE HARRISON, RJ TI ORBITAL-INVARIANT 2ND-ORDER MANY-BODY PERTURBATION-THEORY ON PARALLEL COMPUTERS - AN APPROACH FOR LARGE MOLECULES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID CONFIGURATION-INTERACTION; 4-INDEX TRANSFORMATION; ELECTRON CORRELATION; ENERGY CALCULATIONS; VECTOR; ABINITIO; ARCHITECTURES; SYSTEMS RP BERNHOLDT, DE (reprint author), PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, RICHLAND, WA 99352 USA. NR 60 TC 28 Z9 28 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 22 PY 1995 VL 102 IS 24 BP 9582 EP 9589 DI 10.1063/1.468774 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD332 UT WOS:A1995RD33200016 ER PT J AU ELLISON, AJG PRICE, DL DICKINSON, JE HANNON, AC AF ELLISON, AJG PRICE, DL DICKINSON, JE HANNON, AC TI THE EFFECT OF PHASE-SEPARATION ON SHORT-RANGE AND INTERMEDIATE-RANGE ORDER IN HIGH-SILICA LI2O-SIO2 GLASSES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article C1 CORNING INC,CORNING,NY 14830. RUTHERFORD APPLETON LAB,CHILTON OX11 OQLX,OXON,ENGLAND. RP ELLISON, AJG (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Price, David Long/A-8468-2013; OI Hannon, Alex/0000-0001-5914-1295 NR 30 TC 4 Z9 4 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 22 PY 1995 VL 102 IS 24 BP 9647 EP 9652 DI 10.1063/1.468783 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD332 UT WOS:A1995RD33200025 ER PT J AU WEINELT, M HUBER, W ZEBISCH, P STEINRUCK, HP ULBRICHT, P BIRKENHEUER, U BOETTGER, JC ROSCH, N AF WEINELT, M HUBER, W ZEBISCH, P STEINRUCK, HP ULBRICHT, P BIRKENHEUER, U BOETTGER, JC ROSCH, N TI THE ADSORPTION OF ACETYLENE ON NI(110) - AN EXPERIMENTAL AND THEORETICAL-STUDY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID CHARGED-PARTICLE ANALYZER; ELECTRON-ENERGY LOSS; MOMENTUM DETERMINATION; VIBRATIONAL-SPECTRA; METAL-SURFACES; BOND LENGTHS; ETHYLENE; HYDROCARBONS; DENSITY; CHEMISORPTION C1 UNIV UPPSALA,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. TECH UNIV MUNICH,DEPT PHYS E20,D-85747 GARCHING,GERMANY. TECH UNIV MUNICH,LEHRSTUHL THEORET CHEM,D-85747 GARCHING,GERMANY. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RI Roesch, Notker/C-1182-2010; Steinruck, Hans-Peter/A-6341-2011 OI Steinruck, Hans-Peter/0000-0003-1347-8962 NR 72 TC 33 Z9 33 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 22 PY 1995 VL 102 IS 24 BP 9709 EP 9724 DI 10.1063/1.468790 PG 16 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD332 UT WOS:A1995RD33200032 ER PT J AU LAWLESS, D KAPOOR, S MEISEL, D AF LAWLESS, D KAPOOR, S MEISEL, D TI BIFUNCTIONAL CAPPING OF CDS NANOPARTICLE AND BRIDGING TO TIO2 SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID COLLOIDAL TITANIUM-DIOXIDE; ELECTRON-TRANSFER; SEMICONDUCTOR COLLOIDS; SURFACE COMPLEXATION; PHOTOCHEMISTRY; PARTICLES; SIZE; SENSITIZATION; PHOTOPHYSICS; LUMINESCENCE AB We report on the preparation of quantum-sized CdS particles capped with three bifunctional mercaptocarboxylic acids (HS-(CH2)(n)-CO2H, n = 1-3). The absorption spectra of all three colloid preparations exhibit a new band at 365 nm, assigned to a charge transfer to particle transition, probably f;om the free carboxylate head - group. Among these, mercaptobutyric acid was the most efficient acid at controlling the size of the CdS particles. TiO2 particles were attached to the CdS particles through the carboxylic end of the bifunctional caps. Bridging TiO2 to CdS through these acids leads to quenching of the blue and,enhancement of the red edges of the emission spectra of CdS. This is attributed to selective electron transfer from shallow traps, but not from deeper-traps, to the TiO2 particle. The efficiency of the quenching decreases upon increasing the alkyl chain length of the acid Presumably because of the distance dependence of the electron transfer process. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 31 TC 131 Z9 131 U1 0 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 22 PY 1995 VL 99 IS 25 BP 10329 EP 10335 DI 10.1021/j100025a040 PG 7 WC Chemistry, Physical SC Chemistry GA RE633 UT WOS:A1995RE63300040 ER PT J AU KIM, SY TRYK, DA BAE, IT SANDIFER, M CARR, R ANTONIO, MR SCHERSON, DA AF KIM, SY TRYK, DA BAE, IT SANDIFER, M CARR, R ANTONIO, MR SCHERSON, DA TI IN-SITU EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE OF AN IRON PORPHYRIN IRREVERSIBLY ADSORBED ON AN ELECTRODE SURFACE SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID MOLECULAR STEREOCHEMISTRY; GRAPHITE-ELECTRODES; OXYGEN REDUCTION; SOLID-SOLUTIONS; SPECTROSCOPY; EXAFS; HEMOPROTEINS; WATER; BOND; NITROSYLMETALLOPORPHYRINS AB Structural changes accompanying the reduction of (mu-oxo)bis[(meso-tetrakis(methoxyphenyl)porphyrinato)-iron], [Fe(TMPP)]O-2, irreversibly adsorbed on Black Pearls 2000 (BP) high area carbon in aqueous electrolytes have been examined in situ by X-ray absorption fine structure (XAFS). In the pH range 5-10.8, the average iron-to-porphinato nitrogen distance, d(Fe-N-p), for the ferric species, using theoretical phases and amplitudes calculated from FEFF 3.28 (2.09 +/- 0.01 Angstrom), was found to be, within experimental error, the same as that reported for the closely related [Fe(TPP)]O-2 in crystalline form (2.087 Angstrom). At extreme pH values d(Fe-N-p) was smaller (2.04 +/- 0.02 Angstrom for pH 1.2 and 3.1 and 2.05; +/- 0.02 Angstrom for pH = 13) than those observed in the intermediate PH range. The values in strong acid are consistent with those reported for the diaquo axially coordinated complex [Fe(TPP)(OH2)(2)](+) (d(Fe-N-p) = 2.045 +/- 0.005 Angstrom), whereas that at pH 13, d(Fe-N-p) = 2.05 +/- 0.02, strongly suggests an axially coordinated dihydroxy complex as the predominant species. :The latter assignment is in agreement with information derived from other Spectroscopic methods for closely related ferric porphyrins in solution phase. In contrast, the corresponding ferrous counterparts displayed values for d(Fe-N-p) (2.02 +/- 0.02 Angstrom) consistent with the iron center placed in the plane of the ring throughout the whole range of pH values. Insight into the possible axial ligation of the ferrous derivatives was: obtained from the dependence of the potential associated with the voltammetric peaks on the solution PH. Spin-state/ stereochemical relationships derived from X-ray crystallography and magnetic measurements of well-characterized iron porphyrins indicate that the adsorbed ferric species are all high spin, whereas the ferrous counterparts are either high or intermediate spin. C1 CASE WESTERN RESERVE UNIV,DEPT CHEM,CLEVELAND,OH 44106. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94305. RI Tryk, Donald/D-5931-2012 OI Tryk, Donald/0000-0003-4660-9674 NR 48 TC 12 Z9 12 U1 2 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 22 PY 1995 VL 99 IS 25 BP 10359 EP 10364 DI 10.1021/j100025a044 PG 6 WC Chemistry, Physical SC Chemistry GA RE633 UT WOS:A1995RE63300044 ER PT J AU ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALPAT, B ALCARAZ, J ALLABY, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDREEV, VP ANGELESCU, T ANTREASYAN, D AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BARTALINI, P BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BUYTENHUIJS, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLINI, G CASTELLO, R CAVALLO, N CECCHI, C CERRADA, M CESARONI, F CHAMIZO, M CHAN, A CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, M CHEN, HF CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COMMICHAU, V COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEBOECK, H DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIONISI, C DITTMAR, M DOMINGUEZ, A DORIA, A DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUINKER, P DURAN, I DUTTA, S EASO, S EFREMENKO, Y ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC ERNENWEIN, JP EXTERMANN, P FABBRETTI, R FABRE, M FACCINI, R FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, JH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GANGULI, SN GARCIAABIA, P GAU, SS GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GU, C GUANZIROLI, M GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HARTMANN, B HASAN, A HE, JT HEBBEKER, T HERVE, A HILGERS, K VANHOEK, WC HOFER, H HOORANI, H HOU, SR HU, G ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRENZ, W KUIJTEN, H KUNIN, A DEGUEVARA, PL LANDI, G LAPOINT, C LASSILAPERINI, K LAURIKAINEN, P LEBEAU, M LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, J LECOQ, P LECOULTRE, P LEE, JS LEE, KY LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LIU, ZA LOHMANN, W LONGO, E LU, W LU, YS LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACCHIOLO, A MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A VANMIL, AJW MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MOORE, R MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAHN, S NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D RIND, O RIZVI, HA RO, S ROBOHM, A RODIN, J RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSSELET, P VANROSSUM, W ROTH, S RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOENEICH, B SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEVCHENKO, S SHIVAROV, N SHOUTKO, V SHUKLA, J SHUMILOV, E SON, D SOPCZAK, A SOULIMOV, V SMITH, B SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STOYANOV, B STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUCHSCHERER, H ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOELKERT, R VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEILL, R WILLMOTT, C WITTGENSTEIN, F WU, SX WYNHOFF, S XU, J XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZALITE, A ZEMP, P ZENG, JY ZENG, M ZENG, Y ZHANG, Z ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHOU, Y ZHU, GY ZHU, RY ZICHICHI, A VANDERZWAAN, BCC AF ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALPAT, B ALCARAZ, J ALLABY, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDREEV, VP ANGELESCU, T ANTREASYAN, D AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BARTALINI, P BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BUYTENHUIJS, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLINI, G CASTELLO, R CAVALLO, N CECCHI, C CERRADA, M CESARONI, F CHAMIZO, M CHAN, A CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, M CHEN, HF CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COMMICHAU, V COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEBOECK, H DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIONISI, C DITTMAR, M DOMINGUEZ, A DORIA, A DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUINKER, P DURAN, I DUTTA, S EASO, S EFREMENKO, Y ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC ERNENWEIN, JP EXTERMANN, P FABBRETTI, R FABRE, M FACCINI, R FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, JH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GANGULI, SN GARCIAABIA, P GAU, SS GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GU, C GUANZIROLI, M GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HARTMANN, B HASAN, A HE, JT HEBBEKER, T HERVE, A HILGERS, K VANHOEK, WC HOFER, H HOORANI, H HOU, SR HU, G ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRENZ, W KUIJTEN, H KUNIN, A DEGUEVARA, PL LANDI, G LAPOINT, C LASSILAPERINI, K LAURIKAINEN, P LEBEAU, M LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, J LECOQ, P LECOULTRE, P LEE, JS LEE, KY LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LIU, ZA LOHMANN, W LONGO, E LU, W LU, YS LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACCHIOLO, A MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A VANMIL, AJW MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MOORE, R MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAHN, S NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D RIND, O RIZVI, HA RO, S ROBOHM, A RODIN, J RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSSELET, P VANROSSUM, W ROTH, S RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOENEICH, B SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEVCHENKO, S SHIVAROV, N SHOUTKO, V SHUKLA, J SHUMILOV, E SON, D SOPCZAK, A SOULIMOV, V SMITH, B SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STOYANOV, B STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUCHSCHERER, H ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOELKERT, R VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEILL, R WILLMOTT, C WITTGENSTEIN, F WU, SX WYNHOFF, S XU, J XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZALITE, A ZEMP, P ZENG, JY ZENG, M ZENG, Y ZHANG, Z ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHOU, Y ZHU, GY ZHU, RY ZICHICHI, A VANDERZWAAN, BCC TI TESTS QED AT LEP ENERGIES USING E(+)E(-)-]GAMMA-GAMMA(GAMMA) AND E(+)E(-)-]L(+)L(-)GAMMA-GAMMA SO PHYSICS LETTERS B LA English DT Article ID MASS PHOTON PAIRS; L3 EXPERIMENT; DECAY; E+E-->GAMMA-GAMMA; BOUNDS; SEARCH; GAMMA AB Total and differential cross sections for the process e(+)e(-) --> gamma gamma(gamma), and the total cross section for the process e(+)e(-) --> gamma gamma gamma, are measured at energies around 91 GeV using the data collected with the L3 detector from 1991 to 1993. We set lower limits, at 95% CL, on a contact interaction energy scale parameter Lambda > 602 GeV, on the mass of an excited electron m(c)* > 146 GeV and on the QED cut-off parameters Lambda(+) > 149 GeV and Lambda(-) > 143 GeV. Upper limits are also set on the branching fractions of Z decaying into gamma gamma, pi degrees gamma and eta gamma of 5.2 x 10(-5), 5.2 x 10(-5) and 7.6 x 10(-5) respectively. The reactions e(+)e(-) --> rho(+)rho(-)n gamma (rho = e, mu, tau) are studied using the data collected from 1990 to 1994. The data are consistent with the QED expectations. C1 RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY. NIKHEF H, 1009 DB AMSTERDAM, NETHERLANDS. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. IN2P3, LAB ANNECY LE VIEUX PHYS PARTICULES, CNRS, F-74941 ANNECY LE VIEUX, FRANCE. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA. HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA. BOSTON UNIV, BOSTON, MA 02215 USA. NORTHEASTERN UNIV, BOSTON, MA 02115 USA. INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA. UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. MIT, CAMBRIDGE, MA 02139 USA. IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. WORLD LAB, FBLIA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA. SEFT, HIGH ENERGY PHYS RES INST, SF-00014 HELSINKI, FINLAND. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, IN2P3, INST PHYS NUCL LYON, CNRS, F-69622 VILLEURBANNE, FRANCE. CIEMAT, E-28040 MADRID, SPAIN. IST NAZL FIS NUCL, I-20133 MILAN, ITALY. INST THEORET & EXPTL PHYS, MOSCOW 117259, RUSSIA. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. UNIV NAPLES, I-80125 NAPLES, ITALY. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. CALTECH, PASADENA, CA 91125 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. RUSSIAN ACAD SCI, INST NUCL PHYS, ST PETERSBURG, RUSSIA. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92093 USA. UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN. BULGARIAN ACAD SCI, 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. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. DESY, INST HOCHENERGIEPHYS, D-15738 ZEUTHEN, GERMANY. ETH ZURICH, CH-8093 ZURICH, SWITZERLAND. UNIV HAMBURG, D-22761 HAMBURG, GERMANY. RP IST NAZL FIS NUCL, VIA CELORIA 16, I-20133 MILAN, ITALY. RI Ferguson, Thomas/O-3444-2014; van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Duran, Ignacio/H-7254-2015; rodriguez calonge, francisco javier/H-9682-2015; Sanchez, Eusebio/H-5228-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Roth, Stefan/J-2757-2016; alpat, ali behcet/G-6290-2013; bertucci, bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; de la Cruz, Begona/K-7552-2014; Josa, Isabel/K-5184-2014; Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Fiandrini, Emanuele/C-4549-2008; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Kirkby, Jasper/A-4973-2012; Servoli, Leonello/E-6766-2012 OI Ferguson, Thomas/0000-0001-5822-3731; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283; Roth, Stefan/0000-0003-3616-2223; alpat, ali behcet/0000-0002-0116-1506; Cerrada, Marcos/0000-0003-0112-1691; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ludovici, Lucio/0000-0003-1970-9960; Kirkby, Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185 NR 30 TC 23 Z9 23 U1 1 U2 9 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 JUN 22 PY 1995 VL 353 IS 1 BP 136 EP 144 DI 10.1016/0370-2693(95)00527-R PG 9 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RG601 UT WOS:A1995RG60100023 ER PT J AU ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALPAT, B ALCARAZ, J ALLABY, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDREEV, VP ANGELESCU, T ANTREASYAN, D AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BARTALINI, P BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BRIGLJEVIC, V BROCK, IC BUJAK, A BURGER, JD BURGER, WJ BURGOS, C BUSENITZ, J BUYTENHUIJS, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLINI, G CASTELLO, R CAVALLO, N CECCHI, C CERRADA, M CESARONI, F CHAMIZO, M CHAN, A CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, GM CHEN, HG CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COMMICHAU, V COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEBOECK, H DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIONISI, C DITTMAR, M DOMINGUEZ, A DORIA, A DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUINKER, P DURAN, L DUTTA, S EASO, S EFREMENKO, Y ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC ERNENWEIN, JP EXTERMANN, P FABBRETTI, R FABRE, M FACCINI, R FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, R FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, HH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GANGULI, SN GARCIAABIA, P GAU, SS GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GU, C GUANZIROLI, M GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HARTMANN, B HASAN, A HE, JT HEBBEKER, T HERVE, A HILGERS, K VANHOEK, WC HOFER, H HOORANI, H HOU, SR HU, G ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRENZ, W KUIJTEN, H KUNIN, A DEGUEVARA, PL LANDI, G LAPOINT, C LASSILAPERINI, K LAURIKAINEN, P LEBEAU, M LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, J LECOQ, P LECOULTRE, P LEE, JS LEE, KY LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LIU, ZA LOHMANN, W LONGO, E LU, W LU, YS LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACCHIOLO, A MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A VANMIL, AJW MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MOORE, R MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAHN, S NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODIN, J RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSSELET, P VANROSSUM, W ROTH, S RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANTOCCHIA, A SARAKINOS, ME SARKAS, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOENEICH, B SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SCHEVCHENKO, S SHIVAROV, V SMITH, B SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STOYANOV, B STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUCHSCHERER, H ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOELKERT, R VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEILL, R WILLMOTT, C WITTGENSTEIN, F WU, SX WYNHOFF, S XU, J XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZALITE, A ZEMP, P ZENG, JY ZENG, M ZENG, Y ZHANG, Z ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHOU, Y ZHU, GY ZHU, RY ZICHICHI, A VANDERZWAAN, BCC AF ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALPAT, B ALCARAZ, J ALLABY, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDREEV, VP ANGELESCU, T ANTREASYAN, D AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BARTALINI, P BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BRIGLJEVIC, V BROCK, IC BUJAK, A BURGER, JD BURGER, WJ BURGOS, C BUSENITZ, J BUYTENHUIJS, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLINI, G CASTELLO, R CAVALLO, N CECCHI, C CERRADA, M CESARONI, F CHAMIZO, M CHAN, A CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, GM CHEN, HG CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COMMICHAU, V COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEBOECK, H DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIONISI, C DITTMAR, M DOMINGUEZ, A DORIA, A DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUINKER, P DURAN, L DUTTA, S EASO, S EFREMENKO, Y ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC ERNENWEIN, JP EXTERMANN, P FABBRETTI, R FABRE, M FACCINI, R FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, R FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, HH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GANGULI, SN GARCIAABIA, P GAU, SS GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GU, C GUANZIROLI, M GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HARTMANN, B HASAN, A HE, JT HEBBEKER, T HERVE, A HILGERS, K VANHOEK, WC HOFER, H HOORANI, H HOU, SR HU, G ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRENZ, W KUIJTEN, H KUNIN, A DEGUEVARA, PL LANDI, G LAPOINT, C LASSILAPERINI, K LAURIKAINEN, P LEBEAU, M LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, J LECOQ, P LECOULTRE, P LEE, JS LEE, KY LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTA, L LIU, Y LIU, ZA LOHMANN, W LONGO, E LU, W LU, YS LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACCHIOLO, A MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A VANMIL, AJW MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MOORE, R MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAHN, S NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODIN, J RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSSELET, P VANROSSUM, W ROTH, S RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANTOCCHIA, A SARAKINOS, ME SARKAS, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOENEICH, B SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SCHEVCHENKO, S SHIVAROV, V SMITH, B SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STOYANOV, B STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUCHSCHERER, H ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOELKERT, R VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEILL, R WILLMOTT, C WITTGENSTEIN, F WU, SX WYNHOFF, S XU, J XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZALITE, A ZEMP, P ZENG, JY ZENG, M ZENG, Y ZHANG, Z ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHOU, Y ZHU, GY ZHU, RY ZICHICHI, A VANDERZWAAN, BCC TI EVIDENCE FOR GLUON INTERFERENCE IN HADRONIC Z-DECAYS SO PHYSICS LETTERS B LA English DT Article ID ELECTRON-POSITRON ANNIHILATION; E+E-ANNIHILATION; QCD COHERENCE; QUANTUM CHROMODYNAMICS; ENERGY CORRELATIONS; L3 EXPERIMENT; MONTE-CARLO; JETS; MULTIPLICITY; SIMULATION AB We present evidence for soft gluon interference, as required by QCD. This interference is expected to manifest itself in an angular ordering of the gluons radiated within a jet. Using hadronic decays of the Z boson in the L3 detector at LEP, we compare variables sensitive to such an angular ordering, namely the energy-energy correlation asymmetry and the newly introduced particle-particle correlation asymmetry, with the predictions of various parton shower models. Only those models which incorporate the expected interference agree with the data. 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, 1009 DB AMSTERDAM, NETHERLANDS. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. IN2P3, LAB ANNECY LE VIEUX PHYS PARTICULES, CNRS, F-74941 ANNECY LE VIEUX, FRANCE. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA. HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA. BOSTON UNIV, BOSTON, MA 02215 USA. NORTHEASTERN UNIV, BOSTON, MA 02115 USA. INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA. UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. MIT, CAMBRIDGE, MA 02139 USA. IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA. SEFT, HIGH ENERGY PHYS RES INST, SF-00014 HELSINKI, FINLAND. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, IN2P3, INST PHYS NUCL LYON, CNRS, F-69622 VILLEURBANNE, FRANCE. CIEMAT, E-28040 MADRID, SPAIN. INST THEORET & EXPTL PHYS, MOSCOW 117259, RUSSIA. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. UNIV NAPLES, I-80125 NAPLES, ITALY. UNIV CYPRUS, NICOSIA, CYPRUS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. CALTECH, PASADENA, CA 91125 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. RUSSIAN ACAD SCI, INST NUCL PHYS, ST PETERSBURG, RUSSIA. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92093 USA. UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN. BULGARIAN ACAD SCI, 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. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. DESY, INST HOCHENERGIEPHYS, D-15738 ZEUTHEN, GERMANY. ETH ZURICH, CH-8093 ZURICH, SWITZERLAND. UNIV HAMBURG, D-22761 HAMBURG, GERMANY. RP IST NAZL FIS NUCL, VIA CELORIA 16, I-20133 MILAN, ITALY. RI Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Fiandrini, Emanuele/C-4549-2008; Lista, Luca/C-5719-2008; Ludovici, Lucio/F-5917-2011; Kirkby, Jasper/A-4973-2012; Servoli, Leonello/E-6766-2012; alpat, ali behcet/G-6290-2013; bertucci, bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; de la Cruz, Begona/K-7552-2014; Josa, Isabel/K-5184-2014; Ferguson, Thomas/O-3444-2014; van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Sanchez, Eusebio/H-5228-2015; rodriguez calonge, francisco javier/H-9682-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Roth, Stefan/J-2757-2016; Tsaregorodtsev, Andrei/E-3873-2016; OI Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ludovici, Lucio/0000-0003-1970-9960; Kirkby, Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185; alpat, ali behcet/0000-0002-0116-1506; Cerrada, Marcos/0000-0003-0112-1691; Ferguson, Thomas/0000-0001-5822-3731; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283; Roth, Stefan/0000-0003-3616-2223; Longo, Egidio/0000-0001-6238-6787; Ambrosi, Giovanni/0000-0001-6977-9559; Tsaregorodtsev, Andrei/0000-0003-4618-520X; Castellini, Guido/0000-0002-0177-0643; Diemoz, Marcella/0000-0002-3810-8530; 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 37 TC 12 Z9 12 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD JUN 22 PY 1995 VL 353 IS 1 BP 145 EP 154 DI 10.1016/0370-2693(95)00552-V PG 10 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RG601 UT WOS:A1995RG60100024 ER PT J AU ALEXOPOULOS, T ALLEN, C ANDERSON, EW BALAMURALI, V BANERJEE, S BEERY, PD BHAT, P BISHOP, JM BISWAS, NN BUJAK, A CARMONY, DD CARTER, T CHOI, Y COLE, P DEBONTE, R DECARLO, V ERWIN, AR FINDEISEN, C GOSHAW, AT GUTAY, LJ HIRSCH, AS HOJVAT, C JENNINGS, JR KENNY, VP LINDSEY, CS LOOMIS, C LOSECCO, JM MCMAHON, T MCMANUS, AP MORGAN, N NELSON, K OH, SH PORILE, NT REEVES, D RIMAI, A ROBERTSON, WJ SCHARENBERG, RP STAMPKE, SR STRINGFELLOW, BC THOMPSON, M TURKOT, F WALKER, WD WANG, CH WARCHOL, J WESSON, DK ZHAN, Y AF ALEXOPOULOS, T ALLEN, C ANDERSON, EW BALAMURALI, V BANERJEE, S BEERY, PD BHAT, P BISHOP, JM BISWAS, NN BUJAK, A CARMONY, DD CARTER, T CHOI, Y COLE, P DEBONTE, R DECARLO, V ERWIN, AR FINDEISEN, C GOSHAW, AT GUTAY, LJ HIRSCH, AS HOJVAT, C JENNINGS, JR KENNY, VP LINDSEY, CS LOOMIS, C LOSECCO, JM MCMAHON, T MCMANUS, AP MORGAN, N NELSON, K OH, SH PORILE, NT REEVES, D RIMAI, A ROBERTSON, WJ SCHARENBERG, RP STAMPKE, SR STRINGFELLOW, BC THOMPSON, M TURKOT, F WALKER, WD WANG, CH WARCHOL, J WESSON, DK ZHAN, Y TI CHARGED-PARTICLE MULTIPLICITY CORRELATIONS IN P(P)OVER-BAR COLLISIONS AT ROOT-S=0.3-1.8 TEV SO PHYSICS LETTERS B LA English DT Article ID ANTIPROTON-PROTON COLLISIONS; HADRON-HADRON COLLISIONS; SQUARE-ROOT-S=1.8 TEV; DISTRIBUTIONS; ENERGIES AB The correlations between charged particle multiplicities produced in forward and backward pseudorapidity regions in p $($) over bar$$ p interactions have been measured with a 240 element scintillator hodoscope. The correlation coefficient and the variance of the difference of multiplicities in the two pseudorapidity regions were determined for root s = 0.3-1.8 TeV. These results have been interpreted in terms of a cluster model of particle production. C1 DUKE UNIV,DEPT PHYS,DURHAM,NC 27706. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556. PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907. PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907. UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706. RP ALEXOPOULOS, T (reprint author), DEPAUW UNIV,DEPT PHYS,GREENCASTLE,IN 46135, USA. NR 14 TC 38 Z9 39 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 JUN 22 PY 1995 VL 353 IS 1 BP 155 EP 160 DI 10.1016/0370-2693(95)00554-X PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RG601 UT WOS:A1995RG60100025 ER PT J AU LUKENS, WW ANDERSEN, RA AF LUKENS, WW ANDERSEN, RA TI DINUCLEAR TITANIUM(III) COMPLEXES - EXCHANGE COUPLING IN (CP(2)TI)(2)(MU-O) SO INORGANIC CHEMISTRY LA English DT Article ID ELECTRON-PARAMAGNETIC RESONANCE; DICYCLOPENTADIENYLTITANIUM COMPLEXES; BINUCLEAR AB Addition of 0.5 equiv of water in tetrahydrofuran to Cp(3)Ti in tetrahydrofuran yields the known bridging oxo derivative of Ti(III), (Cp(2)Ti)(2)(mu-O), in high yield. Use of labeled water gives (Cp(2)Ti)(2)(mu-O-18). The EPR spectrum of a toluene glass at 2 K gives a spectrum due to a triplet ground state with g(parallel to) = 1.979, g(perpendicular to) = 1.981, and \D\ = 0.0249 cm(-1). The variable-temperature magnetic susceptibility above 20 K shows intramolecular ferromagnetic coupling and weak intermolecular ferromagnetic coupling; the intramolecular coupling constant is 8.3 cm(-1). Below 20 K, the susceptibility is field dependent. An orbital diagram is presented which accounts for the magnetic behavior in this d(1)d(1) dinuclear metallocene. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. NR 25 TC 26 Z9 26 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD JUN 21 PY 1995 VL 34 IS 13 BP 3440 EP 3443 DI 10.1021/ic00117a011 PG 4 WC Chemistry, Inorganic & Nuclear SC Chemistry GA RF414 UT WOS:A1995RF41400011 ER PT J AU DONG, ZC CORBETT, JD AF DONG, ZC CORBETT, JD TI UNUSUAL ICOSAHEDRAL CLUSTER COMPOUNDS - OPEN-SHELL NA(4)A(6)TL(13) (A=K, RB, CS) AND THE METALLIC ZINTL PHASE NA3K8TL13 (HOW DOES CHEMISTRY WORK IN SOLIDS) SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID INTERMETALLIC COMPOUNDS; TRANSITION-ELEMENTS; INDIUM CLUSTERS; NETWORK AB The line phases in the title are obtained in high yields after fusion of the elements in stoichiometric proportions in Ta containers followed by slow cooling or annealing. The structures were established by single-crystal X-ray means [Na(4)A(6)Tl(13), A = K, Rb, Cs: Im(3) over bar, Z = 2, a 11.5075(7) Angstrom, 11.6648(5) Angstrom, 11.8332(4) Angstrom, R(w)(F) = 2.9, 4.9, 4.2%, respectively; Na3K8Tl13: R(3) over barm$, Z = 3, a 11.0890(6) Angstrom, c = 23.154(2) Angstrom, R(w) = 4.9%]. The structure of cubic Na4K6Tl13 is practically identical with that reported for NaK9Tl13, a composition that cannot be achieved in this structure. The two structure types contain isolated, centered icosahedra of Tl-13(10-) (T-h) and Tl-13(11-)(D-3d) in bcc and ccp arrangements, respectively. All cations bridge between cluster faces or vertices, and their mixed sizes appear critical to the formation of the two structures containing these clusters; which do not occur in the binary systems. The phases exhibit Curie-Weiss (1.7, 1.9 mu(B)) (cubic Rb, Cs) and temperature-independent (chi(M) similar to 1.9 x 10(-3) emu/mol) (rhombohedral K) paramagnetism and poor metal-like resistivities (rho(293) = 310, 625, 69 mu Omega cm), respectively. The novel one-electron-deficient Tl-13(10-) is a result of cation packing limitations, while Tl-13(11-) fulfills (Wade's rule) predictions for a centered icosahedron. Centering of the clusters by thallium contributes markedly to the bonding in both. Theoretical calculations at the extended Huckel and relativistic Huckel (REX) levels for the clusters and at the LMTO (self-consistent band) level for Na4Rb6Tl13 are all consistent with the experimental finding. Mixing of 6p(1/2) and 6p(3/2) levels in the clusters reduces relativistic separations substantially (to similar to 0.2 eV) relative to that in the free Tl atom. Electron localization within the clusters appears dominant. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 46 TC 72 Z9 72 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD JUN 21 PY 1995 VL 117 IS 24 BP 6447 EP 6455 DI 10.1021/ja00129a006 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA RE575 UT WOS:A1995RE57500006 ER PT J AU SCHNEIDER, TW FRYE, GC MARTIN, SJ SPATES, JJ AF SCHNEIDER, TW FRYE, GC MARTIN, SJ SPATES, JJ TI INVESTIGATION OF THE QUARTZ RESONATOR AS AN INDUSTRIAL CLEANING MONITOR SO ANALYTICA CHIMICA ACTA LA English DT Article DE ENVIRONMENTAL ANALYSIS; INDUSTRIAL CLEANING MONITOR; QUARTZ RESONATOR ID CRYSTAL MICROBALANCE AB The evaluation of cleaning processes can be performed in real time using the quartz resonator (QR) cleaning monitor as an in situ probe to monitor surface contamination. Viscous properties of thin films are modeled to determine the QR's limitation to film thickness in contact with liquids of varying properties. The demonstrated ability to provide submonolayer mass detection during a cleaning process allows this monitor to be used to probe the kinetics and effectiveness of a cleaning process. This capability can rapidly evaluate the total effectiveness of environmentally friendly alternative cleaning processes needed to replace cleaners such as chlorofluorocarbons (CFCs) and chlorinated hydrocarbons. These monitors could also be used to verify cleaning bath integrity so that bath cleaning solution changes are optimized. This condition would maintain high product quality and yield while minimizing waste from disposal. RP SCHNEIDER, TW (reprint author), SANDIA NATL LABS,DEPT MICROSENSOR RES & DEV 1315,MS-0351,ALBUQUERQUE,NM 87185, USA. NR 11 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD JUN 20 PY 1995 VL 309 IS 1-3 BP 53 EP 62 DI 10.1016/0003-2670(95)00072-8 PG 10 WC Chemistry, Analytical SC Chemistry GA RE061 UT WOS:A1995RE06100006 ER PT J AU JEFFRIES, JB RAMSEY, JM LUCHT, RP AF JEFFRIES, JB RAMSEY, JM LUCHT, RP TI LASER APPLICATIONS TO CHEMICAL-ANALYSIS - AN INTRODUCTION BY THE FEATURE EDITORS SO APPLIED OPTICS LA English DT Editorial Material AB This issue of Applied Optics features papers on the application of laser technology to chemical analysis. Many of the contributions, although not all, result from papers presented at the Fourth OSA Topical Meeting on Laser Applications to Chemical Analysis, which was held at Jackson Hole, Wyoming, March, 1994. This successful meeting, with nearly one hundred participants, continued the tradition of earlier LACA meetings to focus on the optical science of laser-based measurements of temperature and trace chemical assays in a wide variety of practical applications. C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. UNIV ILLINOIS,DEPT MECH & IND ENGN,URBANA,IL 61801. RP JEFFRIES, JB (reprint author), SRI INT,MOLEC PHYS LAB,MENLO PK,CA 94025, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 20 PY 1995 VL 34 IS 18 BP 3202 EP 3202 PG 1 WC Optics SC Optics GA RC496 UT WOS:A1995RC49600001 PM 21052123 ER PT J AU WHITTEN, WB SHAPIRO, MJ RAMSEY, JM BRONK, BV AF WHITTEN, WB SHAPIRO, MJ RAMSEY, JM BRONK, BV TI MORPHOLOGICAL RESONANCES FOR MULTICOMPONENT IMMUNOASSAYS SO APPLIED OPTICS LA English DT Article ID DIELECTRIC SPHERES; LIGHT-SCATTERING; MICROSPHERES; PARTICLES; ALGORITHM; PRECISION; SPECTRA AB An immunoassay technique capable of detecting and identifying a number of species of microorganisms in a single analysis is described. The method uses optical-resonance size discrimination of microspheres to identify antibodies to which stained microorganisms are bound. C1 USA,CTR DEV & ENGN,EDGEWOOD,MD 21010. RP WHITTEN, WB (reprint author), OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831, USA. NR 25 TC 11 Z9 11 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 20 PY 1995 VL 34 IS 18 BP 3203 EP 3207 PG 5 WC Optics SC Optics GA RC496 UT WOS:A1995RC49600002 PM 21052124 ER PT J AU CASTRO, A SHERA, EB AF CASTRO, A SHERA, EB TI SINGLE-MOLECULE DETECTION - APPLICATIONS TO ULTRASENSITIVE BIOCHEMICAL-ANALYSIS SO APPLIED OPTICS LA English DT Article DE SINGLE-MOLECULE DETECTION; SINGLE-MOLECULE ELECTROPHORESIS; ULTRASENSITIVE ANALYSIS; NUCLEIC-ACID DETECTION; LASER-INDUCED FLUORESCENCE ID FLUORESCENCE DETECTION; DNA AB Recent developments in laser-based detection of fluorescent molecules have made possible the implementation of very sensitive techniques for biochemical analysis. We present and discuss our experiments on the applications of our recently developed technique of single-molecule detection to the analysis of molecules of biological interest. These newly developed methods are capable of detecting and identifying biomolecules at the single-molecule level of sensitivity. In one case, identification is based on measuring fluorescence brightness from single molecules. In another, molecules are classified by determining their electrophoretic velocities. RP CASTRO, A (reprint author), LOS ALAMOS NATL LAB,BIOPHYS GRP,MS-D434,LOS ALAMOS,NM 87545, USA. NR 16 TC 28 Z9 30 U1 1 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 20 PY 1995 VL 34 IS 18 BP 3218 EP 3222 PG 5 WC Optics SC Optics GA RC496 UT WOS:A1995RC49600004 PM 21052126 ER PT J AU WHITEHEAD, CA CANNON, BD WACKER, JF AF WHITEHEAD, CA CANNON, BD WACKER, JF TI TRACE DETECTION OF KRYPTON USING LASER-INDUCED FLUORESCENCE SO APPLIED OPTICS LA English DT Article DE KRYPTON; TRACE DETECTION; LASER-INDUCED FLUORESCENCE; ISOTOPIC SELECTIVITY ID RATE CONSTANTS; IONIZATION; STATES; ATOMS; ARGON AB Highly sensitive detection of neutral Kr atoms was accomplished by the use of laser-induced fluorescence. In one experiment, Kr at 40 parts per 10(12) in He was detected at a signal-to-noise ratio of 500 by time-resolved fluorescence measurements. The Kr metastable Iss level was populated by cascade after two-photon excitation to the 2p(6) level by the frequency-tripled output of a pulsed single-longitudinal-mode dye laser. After a delay, when scattered laser light and cascade resonance fluorescence became negligible, trace quantities of Kr were detected by the use of a pulsed-laser pumping scheme. In a related experiment, Kr-78/Kr-86 isotope ratios ranging from 1 to 0.1 were measured with a resonant isotopic depletion technique first proposed by Makarov [Sov. J. Quantum Electron. 13, 722 (1983)]. The Kr-86 metastable population was selectively depleted by optical pumping to a higher-lying state that relaxed to the ground state by means of radiative cascade. After the Kr-78/Kr-86 ratio of metastables had been enriched by a factor of 10, the Kr-78 population was probed by pulsed excitation. Premixed Kr-78/Kr-86 ratios were measured to within an accuracy of 10%, even for unresolved, Doppler-broadened transitions. RP WHITEHEAD, CA (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 16 TC 3 Z9 3 U1 0 U2 8 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 20 PY 1995 VL 34 IS 18 BP 3250 EP 3256 PG 7 WC Optics SC Optics GA RC496 UT WOS:A1995RC49600008 PM 21052130 ER PT J AU LUDMAN, JE LUDMAN, JJ CALLAHAN, H CAULFIELD, HJ WATT, D SAMPSON, JL ROBINSON, J DAVIS, S HUNT, A AF LUDMAN, JE LUDMAN, JJ CALLAHAN, H CAULFIELD, HJ WATT, D SAMPSON, JL ROBINSON, J DAVIS, S HUNT, A TI INTERFEROMETRIC ATMOSPHERIC REFRACTIVE-INDEX ENVIRONMENTAL MONITOR SO APPLIED OPTICS LA English DT Article DE INTERFEROMETER; ENVIRONMENT; POLLUTANT; REFRACTIVE INDEX; TRACE GAS MONITOR AB Long, open-path, outdoor interferometric measurement of the index of refraction as a function of wavelength (spectral refractivity) requires a number of innovations. These include active compensation for vibration and turbulence. The use of electronic compensation produces an electronic signal that is ideal for extracting data. This allows the appropriate interpretation of those data and the systematic and fast scanning of the spectrum by the use of bandwidths that are intermediate between lasers (narrow bandwidth) and white light (broad bandwidth). An Environmental Interferometer that incorporates these features should be extremely valuable in both pollutant detection and pollutant identification. Spectral refractivity measurements complement the information available from spectral absorption instruments (e.g., a Fourier-transform infrared spectrometer). The Environmental Interferometer currently uses an electronic compensating device with a 1-kHz response time, and therefore rapid spectral scans are feasible so that it is possible to monitor the time evolution of pollutant events. C1 ALABAMA A&M UNIV,NORMAL,AL 35762. UNIV NEW HAMPSHIRE,DURHAM,NH 03824. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP LUDMAN, JE (reprint author), NE PHOTOSCI INC,18 FLAGG RD,HOLLIS,NH 03049, USA. NR 12 TC 0 Z9 0 U1 1 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 20 PY 1995 VL 34 IS 18 BP 3267 EP 3273 PG 7 WC Optics SC Optics GA RC496 UT WOS:A1995RC49600010 PM 21052132 ER PT J AU BROWN, MS RAHN, LA LUCHT, RP AF BROWN, MS RAHN, LA LUCHT, RP TI DEGENERATE 4-WAVE-MIXING LINE-SHAPES OF HYDROXYL AT HIGH PUMP INTENSITIES SO APPLIED OPTICS LA English DT Article DE DEGENERATE 4-WAVE MIXING; SATURATION LINE SHAPES; NONPERTURBATIVE NUMERICAL MODEL ID PHASE CONJUGATION; 4-WAVE; OH; SATURATION; FLAME; TEMPERATURES; REGIME; ATOM AB The degenerate four-wave-mixing spectral profile of the R(1)(9) transition in the A (2) Sigma(+) --> X2 Pi(0, 0) band of OH has been measured for various combinations of saturating pump beams. With increasing pump-beam intensity the degenerate four-wave-mixing line shape changes dramatically near line center. In phase-conjugate geometry, three distinct spectral line shapes were observed for the cases of (1) equally intense pump beams, (2) a strong forward pump and a weak backward pump, and (3) a weak forward pump and an intense backward pump. A significant saturation dip appears in the spectrum near line center for case (3). The measured spectra have been modeled by the use of nonperturbative numerical solutions of the density matrix equations, and agreement between the calculations and the experimental results is excellent. The differences in the saturated line shapes for cases (2) and(3) are explored theoretically, and the calculated results are compared with previous theoretical work [Bloch and Ducloy, J. Opt. Sec. Am. 73, 635 (1985)] in which the line shapes were calculated in the limit of infinite Doppler broadening. C1 SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94450. UNIV ILLINOIS,DEPT MECH & IND ENGN,URBANA,IL 61801. RP BROWN, MS (reprint author), METROLASER,18006 SKYPARK CIRCLE,SUITE 108,IRVINE,CA 92714, USA. NR 37 TC 18 Z9 18 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 20 PY 1995 VL 34 IS 18 BP 3274 EP 3280 PG 7 WC Optics SC Optics GA RC496 UT WOS:A1995RC49600011 PM 21052133 ER PT J AU BISSON, SE AF BISSON, SE TI PARAMETRIC STUDY OF AN EXCIMER-PUMPED, NITROGEN RAMAN SHIFTER FOR LIDAR APPLICATIONS SO APPLIED OPTICS LA English DT Article ID KRF-LASER-RADIATION; PULSE-COMPRESSION; BLUE-GREEN; SCATTERING; STOKES; H-2; CONVERSION AB A krypton fluoride (KrF) excimer-pumped, nitrogen Raman shifter has been studied for use in a wavelength-optimized solar-blind Raman lidar. First Stokes conversion efficiencies (248 --> 263 nm) as high as 12% have been observed in N-2:He gas mixtures. Both oscillator-amplifier and self-seeded configurations were investigated. Wavelength-dependent effects were investigated with a Nd:YAG laser operating at 532 and 266 nm. A comparison of KrF- and Nd:YAG-pumped Raman shifting has shown that the beam quality of the excimer laser was a major factor in limiting the maximum first Stokes conversion efficiency. RP BISSON, SE (reprint author), SANDIA NATL LABS,DIV DIAGNOST RES,LIVERMORE,CA 94551, USA. NR 23 TC 11 Z9 11 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 20 PY 1995 VL 34 IS 18 BP 3406 EP 3412 PG 7 WC Optics SC Optics GA RC496 UT WOS:A1995RC49600030 PM 21052152 ER PT J AU MAUCHE, CW RAYMOND, JC MATTEI, JA AF MAUCHE, CW RAYMOND, JC MATTEI, JA TI EUVE OBSERVATIONS OF THE ANOMALOUS 1993 AUGUST OUTBURST OF SS CYGNI SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; NOVAE, CATACLYSMIC VARIABLES; STARS, INDIVIDUAL (SS CYGNI); ULTRAVIOLET, STARS ID X-RAY-EMISSION; CATACLYSMIC VARIABLE-STARS; DWARF-NOVA OUTBURSTS; VW-HYDRI; ACCRETION DISKS; EXOSAT OBSERVATIONS; BOUNDARY-LAYER; OPTICAL OBSERVATIONS; IUE OBSERVATIONS; WX HYDRI AB Target-of-opportunity observations of the dwarf nova SS Cygni were made by the Extreme Ultraviolet Explorer (EUVE) satellite between 1993 August 17.1 and 23.6 UT (MJD 9216.6 and 9223.1). The observations cover the rise and plateau phases of an anomalous outburst which began on August 15.5 and which reached maximum at V similar to 8.3 on August 20.5. During the observations, the brightness of the source as measured by the Deep Survey instrument rose from similar to 0.015 counts s(-1) to similar to 5 counts s(-1). A delay of similar to 3 days was initially observed between the EUV and optical light curves, but this delay decreased to zero as the light curves approached maximum. During the interval August 17.3 to 23.6 UT, the 72-130 Angstrom flux as measured by the Short Wavelength Spectrometer rose from similar to 6 x 10(-13) to similar to 6.7 x 10(-11) ergs cm(-2) s(-1), while the 72-90 Angstrom to 90-130 Angstrom count ratio remained constant at 1.39 +/- 0.05. Parameterizing the EUV spectrum with a blackbody absorbed by a column of cold neutral material, we derive the luminosity L(bl) and fractional emitting area f = L(bl)/4 pi R(wd)(2) sigma T-4 of the boundary layer as a function of temperature kT. For kT = 30 eV, N-H similar to 4.4 x 10(19) cm(-2), L(bl) similar to 5 x 10(32) ergs s(-1) and f similar to 1 x 10(-4). For kT = 20 eV, N-H similar to 7.0 x 10(19) cm(-2), L(bl) similar to 2 x 10(33) ergs s(-1), and f similar to 3 x 10(-3). The optical through far-UV luminosity of the accretion disk in outburst is L(disk) similar to 3 x 10(34) ergs s(-1). Therefore, while simple theory predicts that the luminosities of the boundary layer and accretion disk should be comparable unless the white dwarf is rotating very rapidly, zeta = L(bl)/L(disk) similar to 1, we find that zeta less than or similar to 0.07. The most interesting and enigmatic aspect of these observations is the EUV spectrum, which evolved homologously over roughly two orders of magnitude in luminosity. The constancy of the EUV spectrum over such a wide range of brightness seems impossible to reconcile with the standard picture of boundary layer emission. C1 HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. AMER ASSOC VARIABLE STAR OBSERVERS, CAMBRIDGE, MA 02138 USA. RP MAUCHE, CW (reprint author), LAWRENCE LIVERMORE NATL LAB, EXPTL ASTROPHYS LAB, L-41, POB 808, LIVERMORE, CA 94550 USA. NR 63 TC 46 Z9 46 U1 0 U2 1 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 JUN 20 PY 1995 VL 446 IS 2 BP 842 EP 851 DI 10.1086/175842 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RC755 UT WOS:A1995RC75500039 ER PT J AU LOZANO, ML TRINGIDES, MC AF LOZANO, ML TRINGIDES, MC TI SURFACE-DIFFUSION MEASUREMENTS FROM STM TUNNELING CURRENT FLUCTUATIONS SO EUROPHYSICS LETTERS LA English DT Article ID OXYGEN; COEFFICIENTS; SI(111); PLANE AB We have used the STM to study surface diffusion from the time dependence of the tunneling current. Results were obtained for the power spectrum, W(f), of oxygen adsorbed on stepped Si(111). The measured W(f) for clean Si(111) shows no temperature dependence and it is smaller by at least two orders of magnitude than the spectrum for oxygen-covered Si(111) which broadens with temperature. W(f) can be fitted to the expected theoretical form for a single-diffusion process and thus rules out simultaneous diffusion on the surface and on the tip. We have extracted an activation energy of E(a) = (0.92 +/- 0.15) eV which is lower than expected for such strongly bound system, possibly because of inhomogeneity in the binding sites. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. RP LOZANO, ML (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. NR 17 TC 45 Z9 47 U1 0 U2 9 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD JUN 20 PY 1995 VL 30 IS 9 BP 537 EP 542 DI 10.1209/0295-5075/30/9/006 PG 6 WC Physics, Multidisciplinary SC Physics GA RG940 UT WOS:A1995RG94000006 ER PT J AU MILLER, AJ TIAO, GC REINSEL, GC WUEBBLES, D BISHOP, L KERR, J NAGATANI, RM DELUISI, JJ MATEER, CL AF MILLER, AJ TIAO, GC REINSEL, GC WUEBBLES, D BISHOP, L KERR, J NAGATANI, RM DELUISI, JJ MATEER, CL TI COMPARISONS OF OBSERVED OZONE TRENDS IN THE STRATOSPHERE THROUGH EXAMINATION OF UMKEHR AND BALLOON OZONESONDE DATA SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID TEMPERATURE; PROFILE; AEROSOL AB During the past several years, several authors have published results of the annual and seasonal trends depicted in the total ozone data from both satellite and ground-based observations. The examination of the vertical profile data available from the balloon ozonesonde and Umkehr observations, however, has been generally restricted to limited periods and to nonseasonal trend calculations. Within this study, we have examined the nonseasonal and the seasonal trend behavior of the ozone profile data from both ozonesonde and Umkehr measurements in a consistent manner, covering the same extended time period, 1968-1991, thus providing the first overall comparison of results. Our results reaffirm the observation of significant negative ozone trends in both the lower stratosphere (15-20 km), about -6% per decade, and upper stratosphere (35-50 km), about -6% per decade, separated by a nodal point in the region of 25-30 km. The upper stratosphere decrease is, apparently, associated with the classic gas phase chemical effect of the chlorofluorocarbons, whereas the cause of the lower stratospheric decline is still under investigation, but may well be associated with the chlorine and bromine chemistry in this region. C1 ALLIED SIGNAL INC, BUFFALO, NY 14210 USA. NOAA, ENVIRONM RES LAB, AIR RESOURCES LAB, BOULDER, CO 80303 USA. UNIV WISCONSIN, DEPT STAT, MADISON, WI 53706 USA. UNIV CHICAGO, GRAD SCH BUSINESS, CHICAGO, IL 60637 USA. LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. ATMOSPHER ENVIRONM SERV, OTTAWA, ON, CANADA. RP MILLER, AJ (reprint author), NOAA, NATL WEATHER SERV, CTR CLIMATE ANAL, 5200 AUTH RD, ROOM 805, WASHINGTON, DC 20233 USA. NR 27 TC 33 Z9 34 U1 1 U2 1 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 JUN 20 PY 1995 VL 100 IS D6 BP 11209 EP 11217 DI 10.1029/95JD00632 PG 9 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RF051 UT WOS:A1995RF05100014 ER PT J AU BERKOWITZ, CM BUSNESS, KM CHAPMAN, EG THORP, JM SAYLOR, RD AF BERKOWITZ, CM BUSNESS, KM CHAPMAN, EG THORP, JM SAYLOR, RD TI OBSERVATIONS OF DEPLETED OZONE WITHIN THE BOUNDARY-LAYER OF THE WESTERN NORTH-ATLANTIC SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID TROPOSPHERIC OZONE; PHOTOCHEMISTRY; TRANSPORT; BUDGET AB Ozone measurements taken between 0.90 and 2.5 km above the surface and extending over an 800-km radius from Halifax, Nova Scotia, are presented from aircraft flights between August 21 and September 14, 1992. The mean ozone mixing ratio was found generally to be greater above the top of the mixed layer than near the sea surface. Eleven of the 32 vertical profiles displayed an abrupt transition at the top of the boundary layer, with surface ozone mixing ratios having values of approximate to 15-20 ppb and values above the boundary layer increasing to approximate to 50-60 ppb. This transition between low and high mixing ratios was observed to occur over a vertical scale of less than 0.5 km in soundings taken within 4 hours of each other over horizontal distances of the order of several hundred kilometers. There was a well-mixed boundary layer in all cases where these sudden transitions in the ozone profiles were observed. These profiles are associated with subsidence over land, followed by dry deposition within a hydrocarbon-poor, well-mixed continental boundary layer. Ozone loss through surface deposition exceeded ozone production by the time the air masses arrived at the maritime coastal waters. Two other broad categories of profiles are described, the most common having the ozone mixing ratio increasing linearly with height to the top of the sampling domain at 2.5 km. A third category had only a local maximum in ozone with much smaller values higher and lower in the atmosphere. RP BERKOWITZ, CM (reprint author), PACIFIC NW LAB, POB 999,MSIN K9-37, RICHLAND, WA 99352 USA. RI Chapman, Elaine/K-8756-2012; Saylor, Rick/D-1252-2014 OI Saylor, Rick/0000-0003-4835-8290 NR 26 TC 23 Z9 23 U1 0 U2 1 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 JUN 20 PY 1995 VL 100 IS D6 BP 11483 EP 11496 DI 10.1029/95JD00544 PG 14 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RF051 UT WOS:A1995RF05100034 ER PT J AU BRUCE, MR BONHAM, RA AF BRUCE, MR BONHAM, RA TI ELECTRON-ION COINCIDENCE EXPERIMENTS - ABSOLUTE DETECTOR EFFICIENCIES AND NEUTRAL DISSOCIATION CROSS-SECTIONS SO JOURNAL OF MOLECULAR STRUCTURE LA English DT Article ID OF-FLIGHT METHOD; BEAM TIME; IMPACT DISSOCIATION; IONIZATION; CF4; NITROGEN AB Electron-ion coincidence studies, using 40 eV electrons on He, Ar, Kr, and N-2 and 30 eV electrons on CF4 have been carried out for all ions produced by impact of electrons on an effusive gas jet and electrons scattered through an angle of 45 degrees. The original purpose of these experiments was to obtain the absolute instrumental efficiency for our time-of-flight mass spectrometer. We have discovered, as a by-product, that useful information about the absolute cross section for neutral dissociation can also be obtained from such studies. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. INDIANA UNIV,DEPT CHEM,BLOOMINGTON,IN 47405. NR 22 TC 12 Z9 12 U1 1 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-2860 J9 J MOL STRUCT JI J. Mol. Struct. PD JUN 20 PY 1995 VL 352 BP 235 EP 243 DI 10.1016/0022-2860(94)08510-O PG 9 WC Chemistry, Physical SC Chemistry GA RD475 UT WOS:A1995RD47500024 ER PT J AU CHENNA, A HANG, B RYDBERG, B KIM, E PONGRACZ, K BODELL, WJ SINGER, B AF CHENNA, A HANG, B RYDBERG, B KIM, E PONGRACZ, K BODELL, WJ SINGER, B TI THE BENZENE METABOLITE P-BENZOQUINONE FORMS ADDUCTS WITH DNA BASES THAT ARE EXCISED BY A REPAIR ACTIVITY FROM HUMAN-CELLS THAT DIFFERS FROM AN ETHENOADENINE GLYCOSYLASE SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE DNA REPAIR; EXOCYCLIC ADDUCTS; 3,N-4-BENZETHENOCYTOSINE; 1,N-6-BENZETHENOADENINE AB Benzene is a ubitiquous human environmental carcinogen, One of the major metabolites is hydroquinone, which is oxidized in vivo to give p-benzoquinone (p-BQ), Both metabolites are toxic to human cells, B-BQ reacts with DNA to form benzetheno adducts with deoxycytidine, deoxyadenosine, and deoxyguanosine. In this study we have synthesized the exocyclic compounds 3-hydroxy-3,N-4-benzetheno-2'-deoxycytidine (p-BQ-dCyd) and 9-hydroxy-1,N-6-benzetheno-2'-deoxyadenosine (p-BQ-dAdo), respectively, by reacting deoxycytidine and deoxyadenosine with p-BQ. These were converted to the phosphoamidites, which were then used to prepare site-specific oligonucleotides with either the p-BQ-dCyd or p-BQ-dAdo adduct (pbqC or pbqA in sequences) at two different defined positions, These oligonucleotides were efficiently nicked 5' to the adduct by partially purified HeLa cell extracts-the pbqC-containing oligomer more rapidly than the pbqA-containing oligomer, In contrast to the enzyme binding to derivatives produced by the vinyl chloride metabolite chloroacetaldehyde, the oligonucleotides up to 60-mer containing p-BQ adducts did not bind measurably to the same enzyme preparation in a gel retardation assay, Furthermore, there was no competition for the binding observed between oligonucleotides containing 1,N-6-etheno A deoxyadenosine (1,N-6-etheno-dAdo; epsilon A in sequences) and these oligomers containing either of the p-BQ adducts, even at 120-fold excess, When highly purified fast protein liquid chromatography (FPLC) enzyme fractions were obtained, there appeared to be two closely eluting nicking activities. One of these enzymes bound and cleaved the EA-containing deoxyoligonucleotide. The other enzyme cleaved the pbqA- and pbqC-containing deoxyolrgonucleotides. One additional unexpected fact was that bulk p-BQ-treated salmon sperm DNA did compete effectively with the epsilon A-containing oligonucleotide for protein binding, This raises the possibility that such DNA contains other, as-yet-uncharacterized adducts that are recognized by the same enzyme that recognizes the etheno adducts, In summary, we describe a previously undescribed human DNA repair activity, possibly a glycosylase, that excises from DNA pbqC and pbqA, exocyclic adducts resulting from reaction of deoxycytidine and deoxyadenosine with the benzene metabolite, p-BQ. This glycosylase activity is not identical to the one previously reported from this laboratory as excising the Pour etheno bases from DNA. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV LIFE SCI,CANC BIOL GRP,BERKELEY,CA 94720. UNIV CALIF SAN FRANCISCO,SCH MED,DEPT NEUROL SURG,BRAIN TUMOR RES CTR,SAN FRANCISCO,CA 94143. FU NCI NIH HHS [CA 47723]; NIEHS NIH HHS [P42ES04705] NR 25 TC 41 Z9 41 U1 0 U2 1 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD JUN 20 PY 1995 VL 92 IS 13 BP 5890 EP 5894 DI 10.1073/pnas.92.13.5890 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RF050 UT WOS:A1995RF05000028 PM 7597048 ER PT J AU KLEMPERER, W LUO, XC ROSNER, R SCHRAMM, DN AF KLEMPERER, W LUO, XC ROSNER, R SCHRAMM, DN TI ON THE POSSIBILITY OF COHERENTLY STIMULATED RECOMBINATION AND COSMOLOGICAL STRUCTURE GENERATION - RECOMBINATION INSTABILITY SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article AB Possible instabilities during cosmological recombination may produce an epoch of nonlinear density growth and fractal-like structural patterns out to the horizon scale at that epoch (approximate to 200 Mpc today). With this motivation, we examine the consequences of the change in effective radiative recombination reaction rate coefficients produced by intense stimulated emission. The proton-electron recombination is considered as a natural laser, leading to the Formation of spatially nonuniform distributions of neutral matter earlier than the recombination epoch. C1 UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720. UNIV CHICAGO,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510. RP KLEMPERER, W (reprint author), HARVARD UNIV,DEPT CHEM PHYS,12 OXFORD ST,CAMBRIDGE,MA 02138, USA. NR 13 TC 2 Z9 2 U1 0 U2 0 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD JUN 20 PY 1995 VL 92 IS 13 BP 6166 EP 6170 DI 10.1073/pnas.92.13.6166 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RF050 UT WOS:A1995RF05000084 PM 11607552 ER PT J AU SCHRAMM, DN ROSNER, R LUO, XC KLEMPERER, W AF SCHRAMM, DN ROSNER, R LUO, XC KLEMPERER, W TI ON THE POSSIBILITY OF COHERENTLY STIMULATED RECOMBINATION AND COSMOLOGICAL STRUCTURE GENERATION - COSMOLOGICAL CONSEQUENCES SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID UNIVERSE AB Given a specific physical mechanism for instabilities during cosmological recombination discussed in an earlier paper, we examine the nonlinear growth of density structures to form fractal-like structural patterns out to the horizon scale at that epoch (similar to 200 Mpc today), A model for such fractal patterns is presented. Such effects could explain observed large-scale structure patterns and the formation of objects at high z, while keeping microwave background anisotropies at the observed minimal levels. We also discuss possible microwave background implications of such a transition and note a potentially observable spectral signature at lambda similar to 0.18 mm as well as a weak line near the peak in the microwave background. C1 FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510. UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720. HARVARD UNIV,DEPT PHYS CHEM,CAMBRIDGE,MA 02138. RP SCHRAMM, DN (reprint author), UNIV CHICAGO,DEPT ASTRON & ASTROPHYS,5640 S ELLIS AVE,CHICAGO,IL 60637, USA. NR 19 TC 1 Z9 1 U1 1 U2 1 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD JUN 20 PY 1995 VL 92 IS 13 BP 6171 EP 6174 DI 10.1073/pnas.92.13.6171 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RF050 UT WOS:A1995RF05000085 PM 11607553 ER PT J AU FRYMIER, PD FORD, RM BERG, HC CUMMINGS, PT AF FRYMIER, PD FORD, RM BERG, HC CUMMINGS, PT TI 3-DIMENSIONAL TRACKING OF MOTILE BACTERIA NEAR A SOLID PLANAR SURFACE SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID ESCHERICHIA-COLI; CHEMOTAXIS; GRADIENT; ADHESION AB Knowing how motile bacteria move near and along a solid surface is crucial to understanding such diverse phenomena as the migration of infectious bacteria along a catheter, biofilm growth, and the movement of bacteria through the pore spaces of saturated soil, a critical step in the in situ bioremediation of contaminated aquifers, In this study, a tracking microscope is used to record the three dimensional motion of Escherichia coli near a planar glass surface, Data from the tracking microscope are analyzed to quantify the effects of bacteria-surface interactions on the swimming behavior of bacteria, The speed of cells approaching the surface is found to decrease in agreement with the mathematical model of Ramia et al, [Ramia, M., Tullock, D. L, & Phan-Tien, N. (1993) Biophys J. 65,755-778], which represents the bacteria as spheres with a single polar flagellum rotating at a constant rate, The tendency of cells to swim adjacent to the surface is shown in computer-generated reproductions of cell traces, The attractive interaction potential between the cells and the solid surface is offered as one of several possible explanations for this tendency. C1 UNIV VIRGINIA,DEPT CHEM ENGN,CHARLOTTESVILLE,VA 22903. HARVARD UNIV,DEPT MOLEC & CELLULAR BIOL,CAMBRIDGE,MA 02138. ROWLAND INST SCI INC,CAMBRIDGE,MA 02142. UNIV TENNESSEE,DEPT CHEM ENGN,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV CHEM TECHNOL,OAK RIDGE,TN 37831. RI Cummings, Peter/B-8762-2013 OI Cummings, Peter/0000-0002-9766-2216 NR 22 TC 162 Z9 164 U1 2 U2 26 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD JUN 20 PY 1995 VL 92 IS 13 BP 6195 EP 6199 DI 10.1073/pnas.92.13.6195 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RF050 UT WOS:A1995RF05000090 PM 7597100 ER PT J AU MCCLELLAND, MA SZE, JS AF MCCLELLAND, MA SZE, JS TI SURFACE-TENSION AND DENSITY-MEASUREMENTS FOR INDIUM AND URANIUM USING A SESSILE-DROP APPARATUS WITH GLOW-DISCHARGE CLEANING SO SURFACE SCIENCE LA English DT Article DE INDIUM; SURFACE TENSION; URANIUM AB The sessile-drop method is used to measure the surface tension and density of liquid indium and uranium under high vacuum. Measurements are made over the temperature range 156-500 degrees C for In and at the melting point for U. Surface oxides are efficiently removed with a glow discharge system. Drop profiles are captured by photograph and processed using nonlinear regression to yield the surface tension and density. In this regression procedure, normal distances from calculated profiles to data points are minimized. For indium, the density and surface tension measurements yield p(mp) = 7.05 X 10(3) kg/m(3), dp/dT = -0.776 kg/m(3) .degrees C, and gamma(mp) = 0.568 N/m, d gamma/dT = -9.45 x 10(-5) N/m .degrees C. The results for uranium at the melting point are p(mp) = 17.47 x 10(3) kg/m(3) and gamma(mp) = 1.653 N/m. RP MCCLELLAND, MA (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 26 TC 26 Z9 27 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JUN 20 PY 1995 VL 330 IS 3 BP 313 EP 322 DI 10.1016/0039-6028(95)00358-4 PG 10 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA RE101 UT WOS:A1995RE10100010 ER PT J AU UPADHYAYA, M OSBORN, M MAYNARD, J ALTHERR, M IKEDA, J HARPER, PS AF UPADHYAYA, M OSBORN, M MAYNARD, J ALTHERR, M IKEDA, J HARPER, PS TI TOWARDS THE FINER MAPPING OF FACIOSCAPULOHUMERAL MUSCULAR-DYSTROPHY AT 4Q35 - CONSTRUCTION OF A LASER MICRODISSECTION LIBRARY SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article DE FSMD; MICRODISSECTION; LIBRARY; CONSERVED SEQUENCE ID POTENTIAL GENE-SEQUENCES; DNA REARRANGEMENTS; HUMAN-CHROMOSOME; GENOMIC CLONES; FSHD GENE; REGION; IDENTIFICATION; MARKERS; REPEAT; HYBRID AB Facioscapulohumeral muscular dystrophy (FSHD) is an autosomal-dominant disorder which has been mapped to the 4q35 region, In order to saturate this distal 4q region with DNA markers, a laser-based chromosomal microdissection and microcloning procedure was used to construct a genomic library from the distal 20% of chromosome 4, derived from a single human metaphase spread. Of the 100 microclones analyzed from this library, 94 clones contained inserts sized from 80-800 bp, with an average size of 340 bp. Less than 20% of these clones hybridized to human repeat sequences, Seventy-two single-copy clones were further characterized by Southern blot hybridization against a DNA panel of somatic cell hybrids, containing various regions of chromosome 4, Forty-two clones mapped to chromosome 4, of which 8 clones mapped into the relevant 4q35 region, Twenty of these chromosome 4-specific clones were screened against ''zoo-blots''; 11 clones, of which 3 mapped to 4q35, identified conserved sequences. This is the first report to describe the isolation of potential expressed sequences derived from the FSHD region, These chromosome region-specific microclones will be useful in the construction of the physical map of the region, the positional cloning of potential disease-associated genes, and the identification of additional polymorphic markers from within the distal 4q region. (C) 1995 Wiley-Liss, Inc. C1 TOHKAI UNIV,SCH MED,GENOSPHERE IGSP,ERATO,ISEHARA,KANAGAWA,JAPAN. LOS ALAMOS NATL LAB,LOS ALAMOS,NM. RP UPADHYAYA, M (reprint author), UNIV WALES HOSP,INST MED GENET,HEATH PK,CARDIFF CF4 4XN,S GLAM,WALES. FU Wellcome Trust NR 44 TC 5 Z9 5 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD JUN 19 PY 1995 VL 60 IS 3 BP 244 EP 251 DI 10.1002/ajmg.1320600315 PG 8 WC Genetics & Heredity SC Genetics & Heredity GA RD839 UT WOS:A1995RD83900014 PM 7573180 ER PT J AU CHOQUETTE, KD LEAR, KL SCHNEIDER, RP GEIB, KM AF CHOQUETTE, KD LEAR, KL SCHNEIDER, RP GEIB, KM TI CAVITY CHARACTERISTICS OF SELECTIVELY OXIDIZED VERTICAL-CAVITY LASERS SO APPLIED PHYSICS LETTERS LA English DT Article ID FABRICATION RP CHOQUETTE, KD (reprint author), SANDIA NATL LABS,PHOTON RES DEPT,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 10 TC 68 Z9 70 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 19 PY 1995 VL 66 IS 25 BP 3413 EP 3415 DI 10.1063/1.113371 PG 3 WC Physics, Applied SC Physics GA RD302 UT WOS:A1995RD30200006 ER PT J AU AGER, JW ANDERS, S ANDERS, A BROWN, IG AF AGER, JW ANDERS, S ANDERS, A BROWN, IG TI EFFECT OF INTRINSIC GROWTH STRESS ON THE RAMAN-SPECTRA OF VACUUM-ARC-DEPOSITED AMORPHOUS-CARBON FILMS SO APPLIED PHYSICS LETTERS LA English DT Article ID UNIAXIAL STRESS; DIAMOND FILMS C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV ACCELERATOR & FUS RES,BERKELEY,CA 94720. RP AGER, JW (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR ADV MAT,DIV MAT SCI,BERKELEY,CA 94720, USA. RI Anders, Andre/B-8580-2009; Raoux, Simone/G-3920-2016; OI Anders, Andre/0000-0002-5313-6505; Ager, Joel/0000-0001-9334-9751 NR 16 TC 69 Z9 69 U1 0 U2 10 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 19 PY 1995 VL 66 IS 25 BP 3444 EP 3446 DI 10.1063/1.113382 PG 3 WC Physics, Applied SC Physics GA RD302 UT WOS:A1995RD30200017 ER PT J AU WRIGHT, AF NELSON, JS AF WRIGHT, AF NELSON, JS TI FIRST-PRINCIPLES CALCULATIONS FOR ZINCBLENDE ALINN ALLOYS SO APPLIED PHYSICS LETTERS LA English DT Article ID SPECIAL POINTS; PSEUDOPOTENTIALS; GAP; AIN RP WRIGHT, AF (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 19 TC 50 Z9 50 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 19 PY 1995 VL 66 IS 25 BP 3465 EP 3467 DI 10.1063/1.113389 PG 3 WC Physics, Applied SC Physics GA RD302 UT WOS:A1995RD30200024 ER PT J AU MOALEM, M OLANDER, DR BALOOCH, M AF MOALEM, M OLANDER, DR BALOOCH, M TI LOW-TEMPERATURE VAPOR-PHASE ETCHING OF SILICON-CARBIDE BY DIOXYGEN DIFLUORIDE SO APPLIED PHYSICS LETTERS LA English DT Article C1 LAWRENCE LIVERMORE NATL LAB,DIV CHEM & MAT SCI,LIVERMORE,CA 94550. RP MOALEM, M (reprint author), UNIV CALIF BERKELEY,DEPT NUCL ENGN,BERKELEY,CA 94720, USA. NR 8 TC 2 Z9 2 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 19 PY 1995 VL 66 IS 25 BP 3480 EP 3482 DI 10.1063/1.113770 PG 3 WC Physics, Applied SC Physics GA RD302 UT WOS:A1995RD30200029 ER PT J AU BENMORE, CJ OLIVER, BJ SUCK, JB ROBINSON, RA EGELSTAFF, PA AF BENMORE, CJ OLIVER, BJ SUCK, JB ROBINSON, RA EGELSTAFF, PA TI A NEUTRON BRILLOUIN-SCATTERING STUDY OF MG70ZN30 SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID METALLIC-GLASS; DISPERSION AB Inelastic neutron scattering measurements have been made with momentum transfers within the first pseudo-Brillouin zone of a magnesium/zinc glass at 100 K and 297 K. We describe the application of a new spectrometer (PHAROS) for these studies. Because the longitudinal velocity of sound is about 4300 m s(-1), a high incident neutron energy (0.187 eV) was required. Data have been obtained down to Q similar or equal to 8 nm(-1) and HBAR omega = 25 meV well inside the first pseudo-Brillouin zone of the glass. Evidence for two predominantly longitudinal excitations in the Mg70Zn30 glass is presented. Their positions agree approximately with theoretical predictions. C1 LOS ALAMOS NATL LAB,LANSCE,LOS ALAMOS,NM 87545. INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE 9,FRANCE. RP BENMORE, CJ (reprint author), UNIV GUELPH,DEPT PHYS,GUELPH,ON N1G 2W1,CANADA. OI Benmore, Chris/0000-0001-7007-7749 NR 13 TC 9 Z9 9 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD JUN 19 PY 1995 VL 7 IS 25 BP 4775 EP 4785 DI 10.1088/0953-8984/7/25/004 PG 11 WC Physics, Condensed Matter SC Physics GA RE951 UT WOS:A1995RE95100004 ER PT J AU GEERTSMA, W SABOUNGI, ML AF GEERTSMA, W SABOUNGI, ML TI LARGE SCHOTTKY-TYPE HEAT-CAPACITY ANOMALIES IN LIQUID ALKALI GROUP-IV ALLOYS SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID LEAD ALLOYS; (DELTA-P/DELTA-T)S; KPB AB The heat capacities of some liquid alkali-lead and alkali-tin alloys exhibit anomalous behaviour as a function of both composition and temperature. The equiatomic composition is characterized by a large excess heat capacity which depends strongly upon temperature. Taking into account the thermodynamic properties and structural measurements, we propose a model for these alloys based on a dissociation scheme of polyvalently charged anions into either free atoms, ions or some other small entities. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP GEERTSMA, W (reprint author), SOLID STATE PHYS LAB,NIJENBORGH 4,9747 AG GRONINGEN,NETHERLANDS. RI Saboungi, Marie-Louise/C-5920-2013 OI Saboungi, Marie-Louise/0000-0002-0607-4815 NR 29 TC 6 Z9 6 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD JUN 19 PY 1995 VL 7 IS 25 BP 4803 EP 4820 DI 10.1088/0953-8984/7/25/006 PG 18 WC Physics, Condensed Matter SC Physics GA RE951 UT WOS:A1995RE95100006 ER PT J AU MARON, J WINOKUR, MJ MATTES, BR AF MARON, J WINOKUR, MJ MATTES, BR TI PROCESSING-INDUCED CHANGES IN THE LOCAL-STRUCTURE OF AMORPHOUS POLYANILINE BY RADIAL-DISTRIBUTION FUNCTION-ANALYSIS OF X-RAY-SCATTERING DATA SO MACROMOLECULES LA English DT Article ID CONDUCTING POLYMERS; MOLECULAR-WEIGHT; ATOMIC-STRUCTURE; POLARON-LATTICE; CRYSTALLINE; DIFFRACTION; FILMS; POLYMERIZATION; POLYACETYLENE; ELECTROLYTES AB The local molecular structure of amorphous polyaniline (PANI) film in the emeraldine oxidation state has been studied using radial distribution function analysis of X-ray scattering data in combination with model calculations. As-cast emeraldine base (EB) films exhibit an interchain ordering that is significantly poorer than that for the intrachain structure. Protonic acid (HBr or HCl) doping of these films, to yield the electrically conductive emeraldine salt (ES) form of PANI, leads to significant changes in both the intrachain and interchain structure of the polymer chains. Structural changes in the intrachain ordering are found to be essentially reversible on undoping since, after all of the dopant is removed from ES films by immersion in a strong base solution, the original as-cast EB intrachain features become more pronounced. In contrast, evidence of irreversible changes in the interchain. packing is observed during this doping/undoping process following the treatment with base. These changes in the EB local molecular ordering may be intimately coupled to the electronic properties intrinsic to conducting polymers and they occur in such a way that subsequent exposure to protonic acids initiates a highly site-specific redoping of the polymer host. These findings shed light on the doping-induced variations of the physical properties in conducting polymers such as charge and mass transport through polyaniline films. C1 UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 57 TC 36 Z9 36 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JUN 19 PY 1995 VL 28 IS 13 BP 4475 EP 4486 DI 10.1021/ma00117a016 PG 12 WC Polymer Science SC Polymer Science GA RF177 UT WOS:A1995RF17700016 ER PT J AU ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELOUS, K BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLUME, M BLYTH, S BOCCI, V BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUDINOV, E BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENNER, RA BRICMAN, C BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BUYS, A CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L CASO, C CASSIO, V GIMENEZ, MVC CATTAI, A CAVALLO, FR CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOCHULA, P CHOROWICZ, V CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W DEFOIX, C DELLARICCA, G DELPIERRE, P DEMARIA, N DEANDELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERQ, C DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DUPONT, F EDSALL, D EHRET, R EIGEN, G EKELOF, T EKSPONG, G ELSING, M ENGEL, JP ERSHAIDAT, N SANTO, ME FALALEEV, V FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D GERBER, JP GILLESPIE, D GOKIELI, R GOLOB, B GOPAL, G GORN, L GORSKI, M GRACCO, V GRARD, F GRAZIANI, E GROSDIDIER, G GUNNARSSON, P GUNTHER, M GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P JACKSON, JN JACOBSSON, R JALOCHA, P JANIK, R JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONSSON, L JORAM, C JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUMSTEIN, Z KRUPINSKI, W KUBINEC, P KUCEWICZ, W KURVINEN, K LACASTA, C LAKTINEH, I LAMBLOT, S LAMSA, JW LANCERI, L LANE, DW LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LIKO, D LIDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZ, JM LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LUTZ, P LYONS, L MACNAUGHTON, J MAEHLUM, G MAIO, A MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C MARTINEZVIDAL, F GARCIA, SMI MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIRABITO, L MITAROFF, WA MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MUNDIM, LM MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIKOLAENKO, V NISS, P NOMEROTSKI, A NORMAND, A OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG ONOFRE, A ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAGES, P PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, E PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEDYKH, Y SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, I STEPANIAK, K STICHELBAUT, F SZEPTYCKA, M TABARELLI, T TAVERNET, JP TCHIKILEV, O TILQUIN, A TIMMERMANS, J TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORASSA, E TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML TYAPKIN, LA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VANELDIK, J VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKE, D WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YU, L YUSHCHENKO, O ZACH, F ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATOKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G AF ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELOUS, K BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLUME, M BLYTH, S BOCCI, V BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUDINOV, E BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRANCHINI, P BRAND, KD BRENNER, RA BRICMAN, C BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BUYS, A CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L CASO, C CASSIO, V GIMENEZ, MVC CATTAI, A CAVALLO, FR CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOCHULA, P CHOROWICZ, V CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W DEFOIX, C DELLARICCA, G DELPIERRE, P DEMARIA, N DEANDELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERQ, C DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DUPONT, F EDSALL, D EHRET, R EIGEN, G EKELOF, T EKSPONG, G ELSING, M ENGEL, JP ERSHAIDAT, N SANTO, ME FALALEEV, V FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D GERBER, JP GILLESPIE, D GOKIELI, R GOLOB, B GOPAL, G GORN, L GORSKI, M GRACCO, V GRARD, F GRAZIANI, E GROSDIDIER, G GUNNARSSON, P GUNTHER, M GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P JACKSON, JN JACOBSSON, R JALOCHA, P JANIK, R JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONSSON, L JORAM, C JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUMSTEIN, Z KRUPINSKI, W KUBINEC, P KUCEWICZ, W KURVINEN, K LACASTA, C LAKTINEH, I LAMBLOT, S LAMSA, JW LANCERI, L LANE, DW LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LIKO, D LIDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZ, JM LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LUTZ, P LYONS, L MACNAUGHTON, J MAEHLUM, G MAIO, A MALYCHEV, V MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C MARTINEZVIDAL, F GARCIA, SMI MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIRABITO, L MITAROFF, WA MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MUNDIM, LM MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIKOLAENKO, V NISS, P NOMEROTSKI, A NORMAND, A OBERSCHULTEBECKMANN, W OBRAZTSOV, V OLSHEVSKI, AG ONOFRE, A ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAGES, P PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, E PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEDYKH, Y SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, I STEPANIAK, K STICHELBAUT, F SZEPTYCKA, M TABARELLI, T TAVERNET, JP TCHIKILEV, O TILQUIN, A TIMMERMANS, J TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORASSA, E TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML TYAPKIN, LA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VANELDIK, J VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKE, D WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YU, L YUSHCHENKO, O ZACH, F ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATOKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R ZUCCHELLI, GC ZUMERLE, G TI INCLUSIVE MEASUREMENTS OF THE K+/- AND P/(P)OVER-BAR PRODUCTION IN HADRONIC Z(0) DECAYS SO NUCLEAR PHYSICS B LA English DT Note ID LUND MONTE-CARLO; Z0 DECAYS; JET FRAGMENTATION; PARTICLE SPECTRA; E+E-PHYSICS; QCD JETS; PARTON AB This analysis, based on a sample of 170000 hadronic Z(0) decays, provides a measurement of the K-+/- and p/($) over bar p differential cross sections which is compared to string- and cluster fragmentation models. The total multiplicities for K-+/- and pip per hadronic event were found to be: N-K = 2.26 +/- 0.18 and N-p = 1.07 +/- 0.14. The positions xi* of the maxima of the differential cross sections as a function of xi = In(1/x(p)) for K-+/- and p/($) over bar p were determined to be 2.63 +/- 0.07 and 2.96 +/- 0.16 respectively. A comparison of the xi* values for various identified particles measured at LEP with the prediction of the Modified Leading Logarithm Approximation with Local Parton Hadron Duality model has been performed. The measured xi* position as a function of the hadron mass, after corrections due to particle decays, is in agreement with the model calculation. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM. FREE UNIV BRUSSELS,IIHE,B-1050 BRUSSELS,BELGIUM. UNIV MONS,FAC SCI,B-7000 MONS,BELGIUM. UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE. UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY. UNIV BOLOGNA,DIPARTMENTO FIS,I-40126 BOLOGNA,ITALY. IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY. CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL. PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL. UNIV ESTADUAL RIO DE JANEIRO,INST FIS,RIO JANEIRO,BRAZIL. COMENIUS UNIV BRATISLAVA,FAC MATH & PHYS,BRATISLAVA 84215,SLOVAKIA. COLL FRANCE,IN2P3,PHYS CORPUSCULAIRE LAB,CNRS,F-75231 PARIS 05,FRANCE. CERN,CH-1211 GENEVA 23,SWITZERLAND. UNIV STRASBOURG 1,IN2P3,CTR RECH NUCL,CNRS,F-67037 STRASBOURG,FRANCE. NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS,GR-15310 ATHENS,GREECE. ACAD SCI CZECH REPUBL,INST PHYS,FZU,DIV HIGH ENERGY PHYS,CR-18040 PRAGUE 8,CZECH REPUBLIC. UNIV GENOA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY. IST NAZL FIS NUCL,I-16146 GENOA,ITALY. UNIV GRENOBLE 1,INST SCI NUCL,IN2P3,CNRS,F-38026 GRENOBLE,FRANCE. SEFT,HIGH ENERGY PHYS RES INST,SF-00014 HELSINKI,FINLAND. JOINT INST NUCL RES,MOSCOW 101000,RUSSIA. UNIV KARLSRUHE,INST EXPTL KERNPHYS,D-76128 KARLSRUHE,GERMANY. INST NUCL PHYS,HIGH ENERGY PHYS LAB,PL-30055 KRAKOW 30,POLAND. UNIV PARIS 11,IN2P3,CNRS,ACCELERATEUR LINEAIRE LAB,F-91405 ORSAY,FRANCE. UNIV LANCASTER,SCH PHYS & MAT,LANCASTER LA1 4YB,ENGLAND. UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. UNIV PARIS 06,IN2P3,LPNHE,CNRS,F-75252 PARIS 05,FRANCE. UNIV PARIS 07,IN2P3,LPNHE,CNRS,F-75252 PARIS 05,FRANCE. LUND UNIV,DEPT PHYS,S-22363 LUND,SWEDEN. UNIV LYON 1,IPNL,IN2P3,CNRS,F-69622 VILLEURBANNE,FRANCE. UNIV COMPLUTENSE MADRID,E-28040 MADRID,SPAIN. UNIV AIX MARSEILLE 2,CPP,CNRS,IN2P3,F-13288 MARSEILLE 09,FRANCE. UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY. IST NAZL FIS NUCL,I-20133 MILAN,ITALY. NIELS BOHR INST,DK-2100 COPENHAGEN O,DENMARK. CHARLES UNIV,NUCL CTR MFF,NC,CR-18000 PRAGUE 8,CZECH REPUBLIC. NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS. NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE. UNIV OSLO,DEPT PHYS,N-1000 OSLO 3,NORWAY. UNIV OVIEDO,DIPARTIMENTO FIS,E-33006 OVIEDO,SPAIN. UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND. UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY. IST NAZL FIS NUCL,I-35131 PADUA,ITALY. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY. IST NAZL FIS NUCL,I-00173 ROME,ITALY. CENS,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE. IST NAZL FIS NUCL,IST SUPER SANITA,I-00161 ROME,ITALY. UNIV CANTABRIA,CSIC,CEAFM,E-39006 SANTANDER,SPAIN. INST HIGH ENERGY PHYS,PROTVINO,RUSSIA. UNIV LJUBLJANA,JOZEF STEFAN INST,LJUBLJANA 61000,SLOVENIA. UNIV LJUBLJANA,DEPT PHYS,LJUBLJANA 61000,SLOVENIA. UNIV STOCKHOLM,FYSIKUM,S-11385 STOCKHOLM,SWEDEN. UNIV TURIN,DIPARTIMENTO FIS SPERIMENTALE,I-10125 TURIN,ITALY. IST NAZL FIS NUCL,I-10125 TURIN,ITALY. UNIV UDINE,IST FIS,I-33100 UDINE,ITALY. UNIV FED RIO DE JANEIRO,BR-21945970 RIO JANEIRO,BRAZIL. UNIV UPPSALA,DEPT RADIAT SCI,S-75121 UPPSALA,SWEDEN. UNIV VALENCIA,CSIC,IFIC,E-46100 BURJASSOT,SPAIN. UNIV VALENCIA,DFAMN,E-46100 BURJASSOT,SPAIN. AUSTRIAN ACAD SCI,INST HOCHENERGIEPHYS,A-1050 VIENNA,AUSTRIA. UNIV WARSAW,PL-00681 WARSAW,POLAND. INST NUCL STUDIES,PL-00681 WARSAW,POLAND. UNIV GESAMTHSCH WUPPERTAL,FACHBEREICH PHYS,D-42097 WUPPERTAL 1,GERMANY. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. UNIV TRIESTE,DIPARTMENTO FIS,I-34127 TRIESTE,ITALY. IST NAZL FIS NUCL,I-34127 TRIESTE,ITALY. RP ABREU, P (reprint author), INST SUPER TECN,FCUL,LIP,AV ELIAS GARCIA 14-1,P-1000 LISBON,PORTUGAL. RI Pimenta, Mario/M-1741-2013; gandelman, miriam/N-3739-2014; Ragazzi, Stefano/D-2463-2009; Ferrer, Antonio/H-2942-2015; Michelotto, Michele/A-9571-2013; Matorras, Francisco/I-4983-2015; Rovelli, Tiziano/K-4432-2015; Smirnova, Oxana/A-4401-2013; Della Ricca, Giuseppe/B-6826-2013; Olshevskiy, Alexander/I-1580-2016; Rames, Jiri/H-2450-2014; Paganoni, Marco/A-4235-2016; Botner, Olga/A-9110-2013; Hallgren, Allan/A-8963-2013; Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013; Zalewski, Piotr/H-7335-2013; Marti-Garcia, Salvador/F-3085-2011; Monge, Maria Roberta/G-9127-2012; Nemecek, Stanislav/G-5931-2014; Ridky, Jan/H-6184-2014; Tome, Bernardo/J-4410-2013; Fernandez, Ester/K-9734-2014; Espirito Santo, Maria Catarina/L-2341-2014; Nomerotski, Andrei/A-5169-2010; Katsanevas, Stavros/A-4297-2011; Ruiz, Alberto/E-4473-2011; branchini, paolo/A-4857-2011; De Saint Jean, Cyrille/E-8853-2011; Shellard, Ronald/G-4825-2012; Petrolini, Alessandro/H-3782-2011; Torassa, Ezio/I-1788-2012; Fruhwirth, Rudolf/H-2529-2012; de Paula, Leandro/I-9278-2012; Andreazza, Attilio/E-5642-2011; Verlato, Marco/J-4604-2012; Contreras Gonzalez, Jose Luis/K-7255-2014; Abreu, Pedro/L-2220-2014; Barao, Fernando/O-2357-2016; Navas, Sergio/N-4649-2014; Barrio, Juan/L-3227-2014; Zaitsev, Alexandre/B-8989-2017 OI Pimenta, Mario/0000-0002-2590-0908; Ragazzi, Stefano/0000-0001-8219-2074; Ferrer, Antonio/0000-0003-0532-711X; Michelotto, Michele/0000-0001-6644-987X; Matorras, Francisco/0000-0003-4295-5668; Rovelli, Tiziano/0000-0002-9746-4842; Smirnova, Oxana/0000-0003-2517-531X; Della Ricca, Giuseppe/0000-0003-2831-6982; Olshevskiy, Alexander/0000-0002-8902-1793; Paganoni, Marco/0000-0003-2461-275X; Mundim, Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311; Monge, Maria Roberta/0000-0003-1633-3195; Ridky, Jan/0000-0001-6697-1393; Tome, Bernardo/0000-0002-7564-8392; Espirito Santo, Maria Catarina/0000-0003-1286-7288; Ruiz, Alberto/0000-0002-3639-0368; Shellard, Ronald/0000-0002-2983-1815; Petrolini, Alessandro/0000-0003-0222-7594; de Paula, Leandro/0000-0002-4984-7734; Andreazza, Attilio/0000-0001-5161-5759; Verlato, Marco/0000-0003-1967-7655; Contreras Gonzalez, Jose Luis/0000-0001-7282-2394; Abreu, Pedro/0000-0002-9973-7314; Barao, Fernando/0000-0002-8346-9941; Navas, Sergio/0000-0003-1688-5758; Barrio, Juan/0000-0002-0965-0259; Zaitsev, Alexandre/0000-0002-4961-8368 NR 29 TC 45 Z9 45 U1 0 U2 8 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 JUN 19 PY 1995 VL 444 IS 1-2 BP 3 EP 26 DI 10.1016/0550-3213(95)00190-4 PG 24 WC Physics, Particles & Fields SC Physics GA RE590 UT WOS:A1995RE59000001 ER PT J AU DESKINS, WG MCDONALD, WJ REID, TB AF DESKINS, WG MCDONALD, WJ REID, TB TI SURVEY SHOWS SUCCESSES, FAILURES OF HORIZONTAL WELLS SO OIL & GAS JOURNAL LA English DT Article C1 US DOE,BARTLESVILLE,OK. RP DESKINS, WG (reprint author), MAURER ENGN INC,HOUSTON,TX, USA. NR 3 TC 3 Z9 3 U1 0 U2 0 PU PENNWELL PUBL CO ENERGY GROUP PI TULSA PA 1421 S SHERIDAN RD PO BOX 1260, TULSA, OK 74101 SN 0030-1388 J9 OIL GAS J JI Oil Gas J. PD JUN 19 PY 1995 VL 93 IS 25 BP 39 EP 45 PG 7 WC Energy & Fuels; Engineering, Petroleum SC Energy & Fuels; Engineering GA RE248 UT WOS:A1995RE24800007 ER PT J AU CORIANO, C WHITE, AR AF CORIANO, C WHITE, AR TI SPECTRUM OF THE O(G(4)) SCALE-INVARIANT LIPATOV KERNEL SO PHYSICAL REVIEW LETTERS LA English DT Article ID QCD; POMERON RP CORIANO, C (reprint author), ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439, USA. OI Coriano', Claudio/0000-0003-0479-8075 NR 15 TC 9 Z9 9 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 19 PY 1995 VL 74 IS 25 BP 4980 EP 4983 DI 10.1103/PhysRevLett.74.4980 PG 4 WC Physics, Multidisciplinary SC Physics GA RD283 UT WOS:A1995RD28300004 ER PT J AU ABE, F ALBROW, MG AMENDOLIA, SR AMIDEI, D ANTOS, J ANWAYWIESE, C APOLLINARI, G ARETI, H ATAC, M AUCHINCLOSS, P AZFAR, F AZZI, P BACCHETTA, N BADGETT, W BAILEY, MW BAO, J DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BENTON, D BERETVAS, A BERGE, JP BERTOLUCCI, S BHATTI, A BIERY, K BINKLEY, M BIRD, F BISELLO, D BLAIR, RE BLOCKER, C BODEK, A BOKHARI, W BOLOGNESI, V BORTOLETTO, D BOSWELL, C BOULOS, T BRANDENBURG, G BROMBERG, C BUCKLEYGEER, E BUDD, HS BURKETT, K BUSETTO, G BYONWAGNER, A BYRUM, KL CAMMERATA, J CAMPAGNARI, C CAMPBELL, M CANER, A CARITHERS, W CARLSMITH, D CASTRO, A CEN, Y CERVELLI, F CHAO, HY CHAPMAN, J CHENG, MT CHIARELLI, G CHIKAMATSU, T CHIOU, CN CIHANGIR, S CLARK, AG COBAL, M CONTRERAS, M CONWAY, J COOPER, J CORDELLI, M COUYOUMTZELIS, C CRANE, D CUNNINGHAM, JD DANIELS, T DEJONGH, F DELCHAMPS, S DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DENINNO, M DERWENT, PF DEVLIN, T DICKSON, M DITTMANN, JR DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENGELS, E ENO, S ERREDE, D ERREDE, S FAN, Q FARHAT, B FIORI, I FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRIEDMAN, J FRY, A FUESS, TA FUKUI, Y FUNAKI, S GAGLIARDI, G GALEOTTI, S GALLINARO, M GARFINKEL, AF GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GLENZINSKI, D GOLD, M GONZALEZ, J GORDON, A GOSHAW, AT GOULIANOS, K GRASSMANN, H GREWAL, A GRIECO, G GROER, L GROSSOPILCHER, C HABER, C HAHN, SR HAMILTON, R HANDLER, R HANS, RM HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HEINRICH, J CRONINHENNESSY, D HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUFFMAN, BT HUGHES, R HURST, P HUSTON, J HUTH, J HYLEN, J INCAGLI, M INCANDELA, J ISO, H JENSEN, H JESSOP, CP JOSHI, U KADEL, RW KAJFASZ, E KAMON, T KANEKO, T KARDELIS, DA KASHA, H KATO, Y KEEBLE, L KENNEDY, RD KEPHART, R KESTEN, P KESTENBAUM, D KEUP, RM KEUTELIAN, H KEYVAN, F KIM, DH KIM, HS KIM, SB KIM, SH KIM, YK KIRSCH, L KOEHN, P KONDO, K KONIGSBERG, J KOPP, S KORDAS, K KOSKA, W KOVACS, E KOWALD, W KRASBERG, M KROLL, J KRUSE, M KUHLMANN, SE KUNS, E LAASANEN, AT LABANCA, N LAMMEL, S LAMOUREUX, JI LECOMPTE, T LEONE, S LEWIS, JD LIMON, P LINDGREN, M LISS, TM LOCKYER, N LOOMIS, C LONG, O LORETI, M LOW, EH LU, J LUCCHESI, D LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MAGHAKIAN, A MAKSIMOVIC, P MANGANO, M MANSOUR, J MARIOTTI, M MARRINER, JP MARTIN, A MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MELESE, P MENZIONE, A MESCHI, E MICHAIL, G MIKAMO, S MILLER, M MILLER, R MIMASHI, T MISCETTI, S MISHINA, M MITSUSHIO, H MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T MUSGRAVE, P NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NODULMAN, L OGAWA, S OH, SH OHL, KE OISHI, R OKUSAWA, T PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARK, S PATRICK, J PAULETTA, G PAULINI, M PESCARA, L PETERS, MD PHILLIPS, TJ PIACENTINO, G PILLAI, M PLUNKETT, R PONDROM, L PRODUIT, N PROUDFOOT, J PTOHOS, F PUNZI, G RAGAN, K RIMONDI, F RISTORI, L ROACHBELLINO, M ROBERTSON, WJ RODRIGO, T ROMANO, J ROSENSON, L SAKUMOTO, WK SALTZBERG, D SANSONI, A SCARPINE, V SCHINDLER, A SCHLABACH, P SCHMIDT, EE SCHMIDT, MP SCHNEIDER, O SCIACCA, GF SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SGOLACCHIA, A SHAPIRO, M SHAW, NM SHEN, Q SHEPARD, PF SHIMOJIMA, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SINGH, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPALDING, J SPIEGEL, L SPHICAS, P SPIES, A STANCO, L STEELE, J STEFANINI, A STRAHL, K STRAIT, J STUART, D SULLIVAN, G SUMOROK, K SWARTZ, RL TAKAHASHI, T TAKIKAWA, K TARTARELLI, F TAYLOR, W TENG, PK TERAMOTO, Y TETHER, S THERIOT, D THOMAS, J THOMAS, TL THUN, R TIMKO, M TIPTON, P TITOV, A TKACZYK, S TOLLEFSON, K TOLLESTRUP, A TONNISON, J DETROCONIZ, JF TSENG, J TURCOTTE, M TURINI, N UEMURA, N UKEGAWA, F UNAL, G VANDENBRINK, S VEJCIK, S VIDAL, R VONDRACEK, M WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WANG, CH WANG, G WANG, J WANG, MJ WANG, QF WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WICKLUND, AB WICKLUND, E WILKINSON, R WILLIAMS, HH WILSON, P WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YEH, P YIN, M YOH, J YOSHIDA, T YOVANOVITCH, D YU, I YUN, JC ZANETTI, A ZETTI, F ZHANG, L ZHANG, S ZHANG, W ZUCCHELLI, S AF ABE, F ALBROW, MG AMENDOLIA, SR AMIDEI, D ANTOS, J ANWAYWIESE, C APOLLINARI, G ARETI, H ATAC, M AUCHINCLOSS, P AZFAR, F AZZI, P BACCHETTA, N BADGETT, W BAILEY, MW BAO, J DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BENTON, D BERETVAS, A BERGE, JP BERTOLUCCI, S BHATTI, A BIERY, K BINKLEY, M BIRD, F BISELLO, D BLAIR, RE BLOCKER, C BODEK, A BOKHARI, W BOLOGNESI, V BORTOLETTO, D BOSWELL, C BOULOS, T BRANDENBURG, G BROMBERG, C BUCKLEYGEER, E BUDD, HS BURKETT, K BUSETTO, G BYONWAGNER, A BYRUM, KL CAMMERATA, J CAMPAGNARI, C CAMPBELL, M CANER, A CARITHERS, W CARLSMITH, D CASTRO, A CEN, Y CERVELLI, F CHAO, HY CHAPMAN, J CHENG, MT CHIARELLI, G CHIKAMATSU, T CHIOU, CN CIHANGIR, S CLARK, AG COBAL, M CONTRERAS, M CONWAY, J COOPER, J CORDELLI, M COUYOUMTZELIS, C CRANE, D CUNNINGHAM, JD DANIELS, T DEJONGH, F DELCHAMPS, S DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DENINNO, M DERWENT, PF DEVLIN, T DICKSON, M DITTMANN, JR DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENGELS, E ENO, S ERREDE, D ERREDE, S FAN, Q FARHAT, B FIORI, I FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRIEDMAN, J FRY, A FUESS, TA FUKUI, Y FUNAKI, S GAGLIARDI, G GALEOTTI, S GALLINARO, M GARFINKEL, AF GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GLENZINSKI, D GOLD, M GONZALEZ, J GORDON, A GOSHAW, AT GOULIANOS, K GRASSMANN, H GREWAL, A GRIECO, G GROER, L GROSSOPILCHER, C HABER, C HAHN, SR HAMILTON, R HANDLER, R HANS, RM HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HEINRICH, J CRONINHENNESSY, D HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUFFMAN, BT HUGHES, R HURST, P HUSTON, J HUTH, J HYLEN, J INCAGLI, M INCANDELA, J ISO, H JENSEN, H JESSOP, CP JOSHI, U KADEL, RW KAJFASZ, E KAMON, T KANEKO, T KARDELIS, DA KASHA, H KATO, Y KEEBLE, L KENNEDY, RD KEPHART, R KESTEN, P KESTENBAUM, D KEUP, RM KEUTELIAN, H KEYVAN, F KIM, DH KIM, HS KIM, SB KIM, SH KIM, YK KIRSCH, L KOEHN, P KONDO, K KONIGSBERG, J KOPP, S KORDAS, K KOSKA, W KOVACS, E KOWALD, W KRASBERG, M KROLL, J KRUSE, M KUHLMANN, SE KUNS, E LAASANEN, AT LABANCA, N LAMMEL, S LAMOUREUX, JI LECOMPTE, T LEONE, S LEWIS, JD LIMON, P LINDGREN, M LISS, TM LOCKYER, N LOOMIS, C LONG, O LORETI, M LOW, EH LU, J LUCCHESI, D LUCHINI, CB LUKENS, P MAAS, P MAESHIMA, K MAGHAKIAN, A MAKSIMOVIC, P MANGANO, M MANSOUR, J MARIOTTI, M MARRINER, JP MARTIN, A MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MELESE, P MENZIONE, A MESCHI, E MICHAIL, G MIKAMO, S MILLER, M MILLER, R MIMASHI, T MISCETTI, S MISHINA, M MITSUSHIO, H MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T MUSGRAVE, P NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NODULMAN, L OGAWA, S OH, SH OHL, KE OISHI, R OKUSAWA, T PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARK, S PATRICK, J PAULETTA, G PAULINI, M PESCARA, L PETERS, MD PHILLIPS, TJ PIACENTINO, G PILLAI, M PLUNKETT, R PONDROM, L PRODUIT, N PROUDFOOT, J PTOHOS, F PUNZI, G RAGAN, K RIMONDI, F RISTORI, L ROACHBELLINO, M ROBERTSON, WJ RODRIGO, T ROMANO, J ROSENSON, L SAKUMOTO, WK SALTZBERG, D SANSONI, A SCARPINE, V SCHINDLER, A SCHLABACH, P SCHMIDT, EE SCHMIDT, MP SCHNEIDER, O SCIACCA, GF SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SGOLACCHIA, A SHAPIRO, M SHAW, NM SHEN, Q SHEPARD, PF SHIMOJIMA, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SINGH, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPALDING, J SPIEGEL, L SPHICAS, P SPIES, A STANCO, L STEELE, J STEFANINI, A STRAHL, K STRAIT, J STUART, D SULLIVAN, G SUMOROK, K SWARTZ, RL TAKAHASHI, T TAKIKAWA, K TARTARELLI, F TAYLOR, W TENG, PK TERAMOTO, Y TETHER, S THERIOT, D THOMAS, J THOMAS, TL THUN, R TIMKO, M TIPTON, P TITOV, A TKACZYK, S TOLLEFSON, K TOLLESTRUP, A TONNISON, J DETROCONIZ, JF TSENG, J TURCOTTE, M TURINI, N UEMURA, N UKEGAWA, F UNAL, G VANDENBRINK, S VEJCIK, S VIDAL, R VONDRACEK, M WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WANG, CH WANG, G WANG, J WANG, MJ WANG, QF WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WICKLUND, AB WICKLUND, E WILKINSON, R WILLIAMS, HH WILSON, P WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YEH, P YIN, M YOH, J YOSHIDA, T YOVANOVITCH, D YU, I YUN, JC ZANETTI, A ZETTI, F ZHANG, L ZHANG, S ZHANG, W ZUCCHELLI, S TI MEASUREMENT OF THE B-S MESON LIFETIME SO PHYSICAL REVIEW LETTERS LA English DT Article ID = 1.8 TEV; P(P)OVER-BAR COLLISIONS; DECAYS C1 ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV BOLOGNA,IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY. BRANDEIS UNIV,WALTHAM,MA 02254. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV CHICAGO,CHICAGO,IL 60637. DUKE UNIV,DURHAM,NC 27708. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. IST NAZL FIS NUCL,NAZL FRASCATI LAB,I-00044 FRASCATI,ITALY. HARVARD UNIV,CAMBRIDGE,MA 02138. UNIV ILLINOIS,URBANA,IL 61801. MCGILL UNIV,INST PARTICLE PHYS,MONTREAL,PQ H3A 2T8,CANADA. UNIV TORONTO,TORONTO,ON M5S 1A7,CANADA. JOHNS HOPKINS UNIV,BALTIMORE,MD 21218. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. MIT,CAMBRIDGE,MA 02139. UNIV MICHIGAN,ANN ARBOR,MI 48109. MICHIGAN STATE UNIV,E LANSING,MI 48824. UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. OSAKA CITY UNIV,OSAKA 588,JAPAN. UNIV PADUA,IST NAZL FIS NUCL,I-35131 PADUA,ITALY. UNIV PENN,PHILADELPHIA,PA 19104. UNIV PITTSBURGH,PITTSBURGH,PA 15260. UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY. SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY. PURDUE UNIV,W LAFAYETTE,IN 47907. UNIV ROCHESTER,ROCHESTER,NY 14627. ROCKEFELLER UNIV,NEW YORK,NY 10021. RUTGERS STATE UNIV,PISCATAWAY,NJ 08854. ACAD SINICA,TAIPEI 11529,TAIWAN. SUPERCONDUCTING SUPER COLLIDER LAB,DALLAS,TX 75237. TEXAS A&M UNIV,COLLEGE STN,TX 77843. TEXAS TECH UNIV,LUBBOCK,TX 79409. UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN. TUFTS UNIV,MEDFORD,MA 02155. UNIV WISCONSIN,MADISON,WI 53706. YALE UNIV,NEW HAVEN,CT 06511. RP ABE, F (reprint author), KEK NAT LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN. RI Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Paulini, Manfred/N-7794-2014; Tartarelli, Giuseppe Francesco/A-5629-2016; OI Chiarelli, Giorgio/0000-0001-9851-4816; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Warburton, Andreas/0000-0002-2298-7315; Paulini, Manfred/0000-0002-6714-5787; Tartarelli, Giuseppe Francesco/0000-0002-4244-502X; Wyss, Jeffery/0000-0002-8277-4012; Bertolucci, Sergio/0000-0003-1738-4736; Benlloch Baviera, Jose Maria/0000-0001-6073-1436; Turini, Nicola/0000-0002-9395-5230 NR 24 TC 21 Z9 21 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 JUN 19 PY 1995 VL 74 IS 25 BP 4988 EP 4992 DI 10.1103/PhysRevLett.74.4988 PG 5 WC Physics, Multidisciplinary SC Physics GA RD283 UT WOS:A1995RD28300006 ER PT J AU KHEMLICHE, H PRIOR, MH SCHNEIDER, D AF KHEMLICHE, H PRIOR, MH SCHNEIDER, D TI COMPLEX SUBSTATE AMPLITUDES FORMED IN DOUBLE-ELECTRON CAPTURE SO PHYSICAL REVIEW LETTERS LA English DT Article ID MULTIPLY-CHARGED IONS; ATOM COLLISIONS; ALIGNMENT; DISTRIBUTIONS; ORIENTATION; PROPENSITY; STATES; HE C1 LAWRENCE LIVERMORE NATL LAB,DIV V,LIVERMORE,CA 94550. RP KHEMLICHE, H (reprint author), UNIV CALIF BERKELEY,DIV CHEM SCI,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 13 TC 8 Z9 8 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 JUN 19 PY 1995 VL 74 IS 25 BP 5013 EP 5016 DI 10.1103/PhysRevLett.74.5013 PG 4 WC Physics, Multidisciplinary SC Physics GA RD283 UT WOS:A1995RD28300012 ER PT J AU HU, YC ECKE, RE AHLERS, G AF HU, YC ECKE, RE AHLERS, G TI TIME AND LENGTH SCALES IN ROTATING RAYLEIGH-BENARD CONVECTION SO PHYSICAL REVIEW LETTERS LA English DT Article ID PATTERN-FORMATION; TURBULENCE; LAYER C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106. UNIV CALIF SANTA BARBARA,CTR NONLINEAR SCI,SANTA BARBARA,CA 93106. RP HU, YC (reprint author), LOS ALAMOS NATL LAB,DIV MAT,POB 1663,LOS ALAMOS,NM 87545, USA. OI Ecke, Robert/0000-0001-7772-5876 NR 20 TC 50 Z9 50 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 JUN 19 PY 1995 VL 74 IS 25 BP 5040 EP 5043 DI 10.1103/PhysRevLett.74.5040 PG 4 WC Physics, Multidisciplinary SC Physics GA RD283 UT WOS:A1995RD28300019 ER PT J AU WILKS, SC KRUER, WL DENAVIT, J ESTABROOK, K HINKEL, DE KALANTAR, D LANGDON, AB MACGOWAN, B MONTGOMERY, DS WILLIAMS, EA AF WILKS, SC KRUER, WL DENAVIT, J ESTABROOK, K HINKEL, DE KALANTAR, D LANGDON, AB MACGOWAN, B MONTGOMERY, DS WILLIAMS, EA TI NONLINEAR-THEORY AND SIMULATIONS OF STIMULATED BRILLOUIN BACKSCATTER IN MULTISPECIES PLASMAS SO PHYSICAL REVIEW LETTERS LA English DT Article ID ION-ACOUSTIC-WAVES C1 LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. RP WILKS, SC (reprint author), LAWRENCE LIVERMORE NATL LAB, L-472, LIVERMORE, CA 94550 USA. OI Montgomery, David/0000-0002-2355-6242 NR 24 TC 22 Z9 22 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 19 PY 1995 VL 74 IS 25 BP 5048 EP 5051 DI 10.1103/PhysRevLett.74.5048 PG 4 WC Physics, Multidisciplinary SC Physics GA RD283 UT WOS:A1995RD28300021 ER PT J AU SIDEBOTTOM, DL GREEN, PF BROW, RK AF SIDEBOTTOM, DL GREEN, PF BROW, RK TI 2 CONTRIBUTIONS TO THE AC CONDUCTIVITY OF ALKALI OXIDE GLASSES SO PHYSICAL REVIEW LETTERS LA English DT Article ID NON-DEBYE RELAXATION; IONIC CONDUCTORS; DIFFUSION RP SIDEBOTTOM, DL (reprint author), SANDIA NATL LABS,DEPT 1845,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 17 TC 101 Z9 101 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 JUN 19 PY 1995 VL 74 IS 25 BP 5068 EP 5071 DI 10.1103/PhysRevLett.74.5068 PG 4 WC Physics, Multidisciplinary SC Physics GA RD283 UT WOS:A1995RD28300026 ER PT J AU ADAMS, DP TEDDER, LL MAYER, TM SWARTZENTRUBER, BS CHASON, E AF ADAMS, DP TEDDER, LL MAYER, TM SWARTZENTRUBER, BS CHASON, E TI INITIAL-STAGES OF FE CHEMICAL-VAPOR-DEPOSITION ONTO SI(100) SO PHYSICAL REVIEW LETTERS LA English DT Article ID SCANNING-TUNNELING-MICROSCOPY; BACKSCATTERING SPECTROMETRY HIBS; SURFACE; GROWTH; SI(001); ADSORPTION; HYDROGEN; DISILANE; ENERGY; DECOMPOSITION RP ADAMS, DP (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 28 TC 26 Z9 26 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 19 PY 1995 VL 74 IS 25 BP 5088 EP 5091 DI 10.1103/PhysRevLett.74.5088 PG 4 WC Physics, Multidisciplinary SC Physics GA RD283 UT WOS:A1995RD28300031 ER PT J AU YU, LH AF YU, LH TI EXPONENTIAL DECAY OF WAVELENGTH IN A DISSIPATIVE SYSTEM SO PHYSICS LETTERS A LA English DT Article ID LANGEVIN EQUATION; QUANTUM-MECHANICS AB Applying a technique developed in a recent work [L.H. Yu and C.P. Sun, Phys. Rev. A 49 (1994) 592] to calculate wavefunction evolution in a dissipative system with Ohmic friction, we show that the wavelength of the wavefunction decays exponentially, while the Brownian motion width gradually increases. In an interference experiment, when these two parameters become equal, the Brownian motion erases the fringes and the system thus approaches the classical limit. We show that the wavelength decay is an observable phenomenon. RP YU, LH (reprint author), BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973, USA. NR 16 TC 7 Z9 7 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD JUN 19 PY 1995 VL 202 IS 2-3 BP 167 EP 175 DI 10.1016/0375-9601(95)00274-7 PG 9 WC Physics, Multidisciplinary SC Physics GA RE064 UT WOS:A1995RE06400004 ER PT J AU EISENBERG, SWE KURTH, MJ FINK, WH AF EISENBERG, SWE KURTH, MJ FINK, WH TI A COMPUTATIONAL STUDY OF THE THERMAL CYCLOREVERSION OF 2,2,6-TRIMETHYL-4H-1,3-DIOXIN-4-ONE AND A RELATED SPECIES - RETRO-DIELS-ALDER REACTION OR CONCERTED NUCLEOPHILIC-ATTACK SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Article ID ACIDS; STEREOSELECTIVITY; DERIVATIVES; LACTONES; KETENE; 2,2,6-TRIMETHYL-1,3-DIOXIN-4-ONE; 1,3-DIOXIN-4-ONES; METHODOLOGY; GENERATION; RING AB Calculations up to the MP2/6-31G*//HF/3-21G level have been carried out to study the thermal cycloreversion of 2,2,6-trimethyl-4H-1,3-dioxin-4-one (1) and 2,2,4-trimethyl-6H-1,3-oxazin-6-one (3). At this level of calculation, the enthalpy of activation for the thermal cycloreversion of dioxinone 1 was found to be 31.3 kcal/mol with zero-point vibrational energy correction. The experimental value for the reaction in solution is 30.4 kcal/mol. The enthalpy of activation for the as of yet unsynthesized oxazinone 3 was found to be 44.2 kcal/mol with zero-point correction. Contrasting with the standard view that the thermal cycloreversion of dioxinone 1 is a retro-Diels-Alder reaction is the structural information from the HF/3-21G-optimized transition state 5 which shows the plane of the acetone dienophile tilted roughly 90 degrees to the plane of the acylketene diene. C1 LAWRENCE LIVERMORE NATL LAB,DEPT CHEM,DAVIS,CA 95616. NR 34 TC 24 Z9 24 U1 2 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3263 J9 J ORG CHEM JI J. Org. Chem. PD JUN 16 PY 1995 VL 60 IS 12 BP 3736 EP 3742 DI 10.1021/jo00117a027 PG 7 WC Chemistry, Organic SC Chemistry GA RE016 UT WOS:A1995RE01600027 ER PT J AU CLEMENT, RE EICEMAN, GA KOESTER, CJ AF CLEMENT, RE EICEMAN, GA KOESTER, CJ TI ENVIRONMENTAL-ANALYSIS SO ANALYTICAL CHEMISTRY LA English DT Review ID ATOMIC-ABSORPTION SPECTROMETRY; PLASMA-MASS-SPECTROMETRY; SUPERCRITICAL-FLUID EXTRACTION; POLYCYCLIC AROMATIC-HYDROCARBONS; VOLATILE ORGANIC-COMPOUNDS; PERFORMANCE LIQUID-CHROMATOGRAPHY; NEUTRON-ACTIVATION ANALYSIS; FLOW-INJECTION ANALYSIS; SOLID-PHASE EXTRACTION; DIBENZO-P-DIOXINS C1 NEW MEXICO STATE UNIV, DEPT CHEM, LAS CRUCES, NM 88003 USA. LAWRENCE LIVERMORE NATL LAB, DIV ANALYT SCI, LIVERMORE, CA 94551 USA. NEW MEXICO STATE UNIV, DEPT CHEM & BIOCHEM, LAS CRUCES, NM USA. RP CLEMENT, RE (reprint author), ONTARIO MINIST ENVIRONM & ENERGY, LAB SERV BRANCH, 125 RESOURCES RD, ETOBICOKE, ON M9P 3V6, CANADA. NR 1103 TC 52 Z9 52 U1 1 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 EI 1520-6882 J9 ANAL CHEM JI Anal. Chem. PD JUN 15 PY 1995 VL 67 IS 12 BP R221 EP R255 PG 35 WC Chemistry, Analytical SC Chemistry GA RD319 UT WOS:A1995RD31900012 PM 8686854 ER PT J AU DAIRKEE, SH DENG, G STAMPFER, MR WALDMAN, FM SMITH, HS AF DAIRKEE, SH DENG, G STAMPFER, MR WALDMAN, FM SMITH, HS TI SELECTIVE CELL-CULTURE OF PRIMARY BREAST-CARCINOMA SO CANCER RESEARCH LA English DT Note ID MAMMARY EPITHELIAL-CELLS; LINES; AMPLIFICATION AB We have used culture conditions which simulate the microenvironment of breast tumors for the isolation and propagation of primary breast tumor cells in vitro. In this monolayer setup, the mixture of cells dissociated from primary breast tumors is subjected to self-created gradients of oxygen and nutrients as well as metabolic waste and extracellular pH. The tumor populations isolated under these novel conditions have displayed phenotypic properties characteristic of breast carcinomas, including homogeneous expression of cytokeratin 19, and increased mitochondrial retention of the cationic dye rhodamine 123. Nonmalignant cultures from reduction mammoplasty were unable to survive these conditions. One tumor population which reached passage 10 was aneuploid for chromosomes 15 and 17, and displayed a p53 mutation in exon 8. These studies strongly suggest that the culture conditions described here can suppress the growth of normal breast cells, thereby allowing selective isolation of some populations of slow-growing primary tumor cells in vitro. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV LIFE SCI,BERKELEY,CA 94720. CALIF PACIFIC MED CTR,GERALDINE BRUSH CANC RES INST,SAN FRANCISCO,CA 94115. UNIV CALIF SAN FRANCISCO,DEPT LAB MED,DIV MOLEC CYTOMETRY,SAN FRANCISCO,CA 94143. RP DAIRKEE, SH (reprint author), CALIF PACIFIC MED CTR,GERALDINE BRUSH CANC RES INST,2330 CLAY ST,ROOM 201,SAN FRANCISCO,CA 94115, USA. RI Dairkee, Shanaz/D-6743-2012 FU NCI NIH HHS [P01 CA 44768, R01 CA66998] NR 20 TC 48 Z9 48 U1 1 U2 5 PU AMER ASSOC CANCER RESEARCH PI PHILADELPHIA PA PUBLIC LEDGER BLDG, SUITE 816, 150 S. INDEPENDENCE MALL W., PHILADELPHIA, PA 19106 SN 0008-5472 J9 CANCER RES JI Cancer Res. PD JUN 15 PY 1995 VL 55 IS 12 BP 2516 EP 2519 PG 4 WC Oncology SC Oncology GA RC936 UT WOS:A1995RC93600009 PM 7780960 ER PT J AU HIESS, A BOUCHERLE, JX GIVORD, F CANFIELD, PC AF HIESS, A BOUCHERLE, JX GIVORD, F CANFIELD, PC TI MAGNETIC-SUSCEPTIBILITY AND MAGNETIZATION MEASUREMENTS OF AN YBAL3 SINGLE-CRYSTAL FOR GROUND-STATE INVESTIGATIONS SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE SUSCEPTIBILITY; RARE EARTHS; INTERMEDIATE VALENCE; KONDO-EFFECT ID CESN3 AB The intermetallic compound YbAl3 (cubic AuCu3 structure type) has been usually classified as an intermediate valence system. As many rare earth intermetallics it might be in general described by the Anderson model for the f-electron hybridization with the conduction electrons. To understand in detail the electron hybridization, the magnetization of a flux-grown YbAl3 single crystal was investigated with a SQUID-magnetometer at different temperatures in applied fief ds up to B=5T. Measurements along the crystallographic axes [100] and [110] show no anisotropy. We used the same single crystal for determining the magnetic susceptibility in the temperature range between T=2 K and T=300 K. We have observed the well-known maximum at T=130 K in agreement with earlier measurements on polycrystals. This maximum as well as a Curie-Weiss-temperature dependence at higher temperatures are typical features of many Ce- and Yb-compounds. For T<6 K the magnetic susceptibility increases rapidly when temperature is decreased. This increase might be explained with a magnetic impurity contamination of less than 100 ppm. Due to this high purity of the sample we could directly measure a small maximum of (chi)(T) at T=15 K, that was earlier only separated by subtracting the larger impurity contribution. This maximum has to be taken into account when describing the hybridization process in detail. C1 COMMISS EUROPEAN COMMUNITIES,JOINT RES CTR,INST TRANSURANIUM ELEMENTS,D-76125 KARLSRUHE,GERMANY. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP HIESS, A (reprint author), CEN,CEA,DEPT RECH FONDAMENTALE MAT CONDENSEE,MDN,SPSMS,F-38054 GRENOBLE 09,FRANCE. RI Canfield, Paul/H-2698-2014 NR 11 TC 13 Z9 13 U1 2 U2 8 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD JUN 15 PY 1995 VL 224 IS 1 BP 33 EP 35 DI 10.1016/0925-8388(94)01505-8 PG 3 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA RG028 UT WOS:A1995RG02800007 ER PT J AU PARK, SY WEEKS, RA ZUHR, RA AF PARK, SY WEEKS, RA ZUHR, RA TI OPTICAL-ABSORPTION BY COLLOIDAL PRECIPITATES IN BISMUTH-IMPLANTED FUSED-SILICA - ANNEALING BEHAVIOR SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID PARTICLES; GLASSES C1 OAK RIDGE NATL LAB,DIV SOLID STATE PHYS,SURFACE MODIFICAT & CHARACTERIZAT FACIL,OAK RIDGE,TN 37831. RP PARK, SY (reprint author), VANDERBILT UNIV,BOX 544,GPC,NASHVILLE,TN 37203, USA. NR 40 TC 24 Z9 24 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 15 PY 1995 VL 77 IS 12 BP 6100 EP 6107 DI 10.1063/1.359135 PG 8 WC Physics, Applied SC Physics GA RD572 UT WOS:A1995RD57200002 ER PT J AU TUSZEWSKI, M WAGANAAR, WJ DESJARLAIS, MP AF TUSZEWSKI, M WAGANAAR, WJ DESJARLAIS, MP TI ELECTRON-DENSITY MEASUREMENTS IN A MAGNETICALLY INSULATED ION DIODE SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SURFACE-FLASHOVER; PLASMA-DENSITY; INTENSE; BEAMS; ANODE; EXPANSION; FIELD C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP TUSZEWSKI, M (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 25 TC 5 Z9 5 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 15 PY 1995 VL 77 IS 12 BP 6188 EP 6193 DI 10.1063/1.359145 PG 6 WC Physics, Applied SC Physics GA RD572 UT WOS:A1995RD57200013 ER PT J AU MCINTYRE, PC MAGGIORE, CJ NASTASI, M AF MCINTYRE, PC MAGGIORE, CJ NASTASI, M TI ORIENTATION SELECTION IN THIN PLATINUM FILMS ON (001) MGO SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID INTERPHASE BOUNDARIES; MGO(001); GROWTH RP MCINTYRE, PC (reprint author), LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545, USA. NR 19 TC 42 Z9 42 U1 1 U2 8 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 15 PY 1995 VL 77 IS 12 BP 6201 EP 6204 DI 10.1063/1.359147 PG 4 WC Physics, Applied SC Physics GA RD572 UT WOS:A1995RD57200015 ER PT J AU TARNOW, E AF TARNOW, E TI STRUCTURE OF THE INTERFACE BETWEEN ERAS, A CUBIC SEMIMETAL AND ALAS, A TETRAHEDRAL SEMICONDUCTOR SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SI; PSEUDOPOTENTIALS; SURFACES C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 18 TC 11 Z9 11 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 15 PY 1995 VL 77 IS 12 BP 6317 EP 6326 DI 10.1063/1.359101 PG 10 WC Physics, Applied SC Physics GA RD572 UT WOS:A1995RD57200036 ER PT J AU KHACHATURYAN, K AF KHACHATURYAN, K TI MECHANICAL FATIGUE IN THIN-FILMS INDUCED BY PIEZOELECTRIC STRAINS AS A CAUSE OF FERROELECTRIC FATIGUE SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID PLZT CERAMICS; DIFFUSION BARRIER; PHASE-TRANSITION; MEMORIES; SPECTROSCOPY; CAPACITORS; LOOPS; SI RP KHACHATURYAN, K (reprint author), LOS ALAMOS NATL LAB,CTR MAT SCI,LOS ALAMOS,NM 87545, USA. NR 61 TC 28 Z9 29 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 15 PY 1995 VL 77 IS 12 BP 6449 EP 6455 DI 10.1063/1.359118 PG 7 WC Physics, Applied SC Physics GA RD572 UT WOS:A1995RD57200056 ER PT J AU WARREN, WL DIMOS, D TUTTLE, BA PIKE, GE SCHWARTZ, RW CLEWS, PJ MCINTYRE, DC AF WARREN, WL DIMOS, D TUTTLE, BA PIKE, GE SCHWARTZ, RW CLEWS, PJ MCINTYRE, DC TI POLARIZATION SUPPRESSION IN PB(ZR,TI)O-3 THIN-FILMS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CERAMICS; MEMORIES; FATIGUE RP WARREN, WL (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 31 TC 170 Z9 176 U1 2 U2 18 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 15 PY 1995 VL 77 IS 12 BP 6695 EP 6702 DI 10.1063/1.359083 PG 8 WC Physics, Applied SC Physics GA RD572 UT WOS:A1995RD57200092 ER PT J AU SELINDER, TI ROBERTS, TA MILLER, DJ BENO, MA KNAPP, GS GRAY, KE OGAWA, S FAIR, JA FRASER, DB AF SELINDER, TI ROBERTS, TA MILLER, DJ BENO, MA KNAPP, GS GRAY, KE OGAWA, S FAIR, JA FRASER, DB TI IN-SITU X-RAY-DIFFRACTION STUDY OF COSI2 FORMATION DURING ANNEALING OF A CO/TI BILAYER ON SI(100) SO JOURNAL OF APPLIED PHYSICS LA English DT Note C1 MATSUSHITA ELECT IND CO LTD, SEMICOND RES CTR, OSAKA, JAPAN. GINZTON RES CTR, PALO ALTO, CA 94304 USA. INTEL CORP, COMPONENT RES LAB, SANTA CLARA, CA 95052 USA. RP ARGONNE NATL LAB, ARGONNE, IL 60439 USA. NR 10 TC 10 Z9 10 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 15 PY 1995 VL 77 IS 12 BP 6730 EP 6732 DI 10.1063/1.359091 PG 3 WC Physics, Applied SC Physics GA RD572 UT WOS:A1995RD57200100 ER PT J AU MANOLOPOULOS, DE GRAY, SK AF MANOLOPOULOS, DE GRAY, SK TI SYMPLECTIC INTEGRATORS FOR THE MULTICHANNEL SCHRODINGER-EQUATION SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID MOLECULAR-SCATTERING THEORY; LOG-DERIVATIVE METHOD; COUPLED EQUATIONS; INELASTIC-SCATTERING; REACTIVE SCATTERING; HAMILTONIAN-SYSTEMS; NUMERICAL-METHODS; ALGORITHM; PHOTODISSOCIATION; COLLISIONS C1 ARGONNE NATL LAB,DIV CHEM,THEORET CHEM GRP,ARGONNE,IL 60439. RP MANOLOPOULOS, DE (reprint author), UNIV NOTTINGHAM,DEPT CHEM,UNIV PK,NOTTINGHAM NG7 2RD,ENGLAND. NR 54 TC 26 Z9 26 U1 1 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 15 PY 1995 VL 102 IS 23 BP 9214 EP 9227 DI 10.1063/1.468871 PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD124 UT WOS:A1995RD12400009 ER PT J AU RUSSO, TV MARTIN, RL HAY, PJ RAPPE, AK AF RUSSO, TV MARTIN, RL HAY, PJ RAPPE, AK TI VIBRATIONAL FREQUENCIES OF TRANSITION-METAL CHLORIDE AND OXO COMPOUNDS USING EFFECTIVE CORE POTENTIAL ANALYTIC 2ND-DERIVATIVES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID RELATIVISTIC EFFECTIVE POTENTIALS; SPIN-ORBIT OPERATORS; EXTENDED BASIS-SETS; ORGANOMETALLIC COMPOUNDS; MOLECULAR CALCULATIONS; SPECTRA; INTEGRALS; 1ST-ROW; ATOMS C1 COLORADO STATE UNIV,DEPT CHEM,FT COLLINS,CO 80523. RP RUSSO, TV (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,MS B268,LOS ALAMOS,NM 87545, USA. NR 46 TC 22 Z9 22 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 15 PY 1995 VL 102 IS 23 BP 9315 EP 9321 DI 10.1063/1.468798 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD124 UT WOS:A1995RD12400019 ER PT J AU HERYADI, D YEAGER, DL GOLAB, JT NICHOLS, JA AF HERYADI, D YEAGER, DL GOLAB, JT NICHOLS, JA TI MULTICONFIGURATIONAL SPIN TENSOR ELECTRON PROPAGATOR VERTICAL IONIZATION-POTENTIALS FOR O-2 - COMPARISON TO SOME OTHER FOREFRONT METHODS USING THE SAME BASIS-SETS AND GEOMETRIES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Note ID ATOMS C1 AMOCO CORP, AMOCO RES CTR, NAPERVILLE, IL 60566 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP HERYADI, D (reprint author), TEXAS A&M UNIV, DEPT CHEM, COLLEGE STN, TX 77843 USA. RI Yeager, Danny/D-3679-2015; OI Yeager, Danny/0000-0001-9832-0034; Nichols, Jeffrey/0000-0001-5454-9726 NR 8 TC 14 Z9 14 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 15 PY 1995 VL 102 IS 23 BP 9444 EP 9445 DI 10.1063/1.468813 PG 2 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD124 UT WOS:A1995RD12400034 ER PT J AU SANTER, BD MIKOLAJEWICZ, U BRUGGEMANN, W CUBASCH, U HASSELMANN, K HOCK, H MAIERREIMER, E WIGLEY, TML AF SANTER, BD MIKOLAJEWICZ, U BRUGGEMANN, W CUBASCH, U HASSELMANN, K HOCK, H MAIERREIMER, E WIGLEY, TML TI OCEAN VARIABILITY AND ITS INFLUENCE ON THE DETECTABILITY OF GREENHOUSE WARMING SIGNALS SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID GENERAL-CIRCULATION MODEL; DETECTING CLIMATE CHANGE; ATMOSPHERE MODEL; CARBON-DIOXIDE; DEEP-OCEAN; CO2; SENSITIVITY; GASES; SIMULATIONS; INCREASE AB Recent investigations have considered whether it is possible to achieve early detection of greenhouse-gas-induced climate change by observing changes in ocean variables. In this study we use model data to assess some of the uncertainties involved in estimating when we could expect to detect ocean greenhouse warming signals. We distinguish between detection periods and detection times. As defined here, detection period is the length of a climate time series required in order to detect, at some prescribed significance level, a given linear trend in the presence of the natural climate variability. Detection period is defined in model years and is independent of reference time and the real time evolution of the signal. Detection time is computed for an actual time-evolving signal from a greenhouse warming experiment and depends on the experiment's start date. Two sources of uncertainty are considered: those associated with the level of natural variability or noise, and those associated with the time-evolving signals. We analyze the ocean signal and noise for spatially averaged ocean circulation indices such as heat and fresh water fluxes, rate of deep water formation, salinity, temperature, transport of mass, and ice volume. The signals for these quantities are taken from recent time-dependent greenhouse warming experiments performed by the Max Planck Institute for Meteorology in Hamburg with a coupled ocean-atmosphere general circulation model. The time-dependent greenhouse gas increase in these experiments was specified in accordance with scenario A of the Intergovernmental Panel on Climate Change. The natural variability noise is derived from a 300-year control run performed with the same coupled atmosphere-ocean model and from two long (>3000 years) stochastic forcing experiments in which an uncoupled ocean model was forced by white noise surface flux variations. In the first experiment the stochastic forcing was restricted to the fresh water fluxes, while in the second experiment the ocean model was additionally forced by variations in wind stress and heat fluxes. The mean states and ocean variability are very different in the three natural variability integrations. A suite of greenhouse warming simulations with identical forcing but different initial conditions reveals that the signal estimated from these experiments may evolve in noticeably different ways for some ocean variables. The combined signal and noise uncertainties translate into large uncertainties in estimates of detection time. Nevertheless, we find that ocean variables that are highly sensitive indicators of surface conditions, such as convective overturning in the North Atlantic, have shorter signal detection times (35-65 years)than deep-ocean indicators (greater than or equal to 100 years). We investigate also whether the use of a multivariate detection vector increases the probability of early detection. We find that this can yield detection times of 35-60 years (relative to a 1985 reference date) if signal and noise are projected onto a common ''fingerprint'' which describes the expected signal direction. Optimization of the signal-to-noise ratio by (spatial) rotation of the fingerprint in the direction of low-noise components of the stochastic forcing experiments noticeably reduces the detection time (to 10-45 years). However, rotation in space alone does not guarantee an improvement of the signal-to-noise ratio for a time-dependent signal. This requires an ''optimal fingerprint'' strategy in which the detection pattern (fingerprint) is rotated in both space and time. C1 MAX PLANCK INST METEOROL, D-20146 HAMBURG, GERMANY. UNIV HAMBURG, INST LOGIST & TRANSPORT, D-20146 HAMBURG, GERMANY. DEUTSCH KLIMARECHENZENTRUM, D-20146 HAMBURG, GERMANY. NATL CTR ATMOSPHER RES, BOULDER, CO 80307 USA. RP LAWRENCE LIVERMORE NATL LAB, PROGRAM CLIMATE MODEL DIAG & INTERCOMPARISON, LIVERMORE, CA 94550 USA. RI Wigley, Tom/B-4705-2008; Santer, Benjamin/F-9781-2011 NR 75 TC 55 Z9 56 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9275 EI 2169-9291 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD JUN 15 PY 1995 VL 100 IS C6 BP 10693 EP 10725 DI 10.1029/95JC00683 PG 33 WC Oceanography SC Oceanography GA RD775 UT WOS:A1995RD77500008 ER PT J AU WARRIER, KGK VARMA, HK MANI, TV DAMODARAN, AD BALACHANDRAN, U AF WARRIER, KGK VARMA, HK MANI, TV DAMODARAN, AD BALACHANDRAN, U TI ZONE-REFINING OF SINTERED, MICROWAVE DERIVED YBCO SUPERCONDUCTORS SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID YBA2CU3O6+X; POWDER AB Post-sintering treatments, such as zone melting under a thermal gradient, have been conducted on sintered YBCO tape cast films. YBCO precursor powder was derived through decomposition of a mixture of nitrates of cations in a microwave oven for similar to 4 min. The resulting powder was characterized and made into thin sheets by tape casting and then sintered at 945 degrees C for 5 h. The sintered tapes were subjected to repeated zone refining operations at the relatively high speed of similar to 30 mm h(-1). A microstructure having uniformly orientated grains in the a-b plane throughout the bulk of the sample was obtained by three repeated zone refining operations. Details of precursor preparation, microwave processing and its advantages, zone refining conditions and microstructural features are presented in this paper. C1 ARGONNE NATL LAB,DIV ENERGY TECHNOL,ARGONNE,IL 60439. RP WARRIER, KGK (reprint author), CSIR,REG RES LAB,TRIVANDRUM 695019,KERALA,INDIA. RI TVM, NIIST/E-5132-2012 OI TVM, NIIST/0000-0002-5814-466X NR 17 TC 7 Z9 7 U1 0 U2 3 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD JUN 15 PY 1995 VL 30 IS 12 BP 3238 EP 3241 DI 10.1007/BF01209243 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA RG756 UT WOS:A1995RG75600033 ER PT J AU TUMIDAJSKI, PJ BLANDER, M AF TUMIDAJSKI, PJ BLANDER, M TI SOLUBILITY OF COCL2 IN MOLTEN NACL-ALCL3 SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID ALCL3-NACL MELTS; EQUILIBRIA AB The solubility of CoCl2 in molten NaCl-AlCl3 was determined by aliquot sampling at 255 degrees C for acidic and basic solvent compositions. There was a pronounced compositional dependence of the solubility with a minimum at approximately the equimolar solvent composition. The solubility minimum was 1.04 x 10(-4) mol fraction of CoCl2. The solubility in the highly ordered NaCl-AlCl3 solutions was described in chemical terms. The true solubility product for CoCl2 was calculated as 1.50 x 10(-15) In basic and in somewhat acidic melts, the solubility was primarily related to the formation of the associated ionic species CoCl+, CoCl2, CoCl3-, and CoCl42-. The calculated formation constant of CoCl+ was 9.48 x 10(6), Furthermore, the specific bond free energy for the associated complex, CoCl+, was -64.43 kJ mol(-1) for a coordination number of four. C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. RP TUMIDAJSKI, PJ (reprint author), NATL RES COUNCIL CANADA,INST RES CONSTRUCT,OTTAWA,ON K1A 0R6,CANADA. NR 18 TC 2 Z9 2 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 15 PY 1995 VL 99 IS 24 BP 9992 EP 9995 DI 10.1021/j100024a048 PG 4 WC Chemistry, Physical SC Chemistry GA RD471 UT WOS:A1995RD47100048 ER PT J AU ADAM, MF AF ADAM, MF TI A COSTLY LESSON SO MACHINE DESIGN LA English DT Letter RP ADAM, MF (reprint author), ARGONNE NATL LAB,IDAHO FALLS,ID 83401, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PENTON PUBL INC PI CLEVELAND PA 1100 SUPERIOR AVE, CLEVELAND, OH 44114 SN 0024-9114 J9 MACH DES JI Mach. Des. PD JUN 15 PY 1995 VL 67 IS 11 BP 12 EP 12 PG 1 WC Engineering, Mechanical SC Engineering GA TC334 UT WOS:A1995TC33400007 ER PT J AU BOLMARO, RE BROWNING, RV GUERRA, FM ROLLETT, AD AF BOLMARO, RE BROWNING, RV GUERRA, FM ROLLETT, AD TI FINITE-ELEMENT METHOD SIMULATIONS FOR 2-PHASE MATERIAL PLASTIC STRAINS SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE FINITE ELEMENT METHOD; PLASTICITY; STRAIN ID DEFORMATION; MICROSTRUCTURE; STEEL; COMPOSITES; TEXTURE AB The texture study of two-phase materials requires a previous knowledge of the distribution of strains among both phases. The way they rotate around one another is of special interest. The texture is a phenomenon that manifests itself at medium and high deformations. Therefore the study cannot usually be performed experimentally, particularly when we are dealing with high volume fraction contents. Sharing of strains is also very important in many technological applications such as forming. This paper presents a study, by the finite element technique, of those quantities as a function of volume fraction, geometry, distribution, strain hardening and yield stress ratio between the two phases. Both phases are assumed to be elasto-plastic and isotropic materials. It is shown that strains and internal rotations are highly influenced by the topology of the phase distribution, yield stress ratio and volume fraction. For high yield stress ratio the hardening seems to be of less importance. It is shown that the strain is highly inhomogeneous and that averages of appropriate quantities can give a macroscopic insight on strain and rotation sharing. Among the many strain definitions the equivalent von Mises deformation will be particularly addressed for its importance in hardening, damage and texture. The local variations are not less important, but the focus will be on the calculation of average quantities able to guide to macroscopic constitutive equation development. C1 UNIV NACL ROSARIO,FAC CIENCIAS EXACTAS INGN & AGR,RA-2000 ROSARIO,ARGENTINA. LOS ALAMOS NATL LAB,DIV DESIGN ENGN,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545. RP BOLMARO, RE (reprint author), UNIV NACL ROSARIO,CONICET,INST FIS ROSARIO,BV 27 FEBRERO 210 BIS,RA-2000 ROSARIO,ARGENTINA. RI Rollett, Anthony/A-4096-2012; Bolmaro, Raul/H-6520-2016 OI Rollett, Anthony/0000-0003-4445-2191; Bolmaro, Raul/0000-0002-8218-6958 NR 34 TC 10 Z9 10 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD JUN 15 PY 1995 VL 196 IS 1-2 BP 53 EP 63 DI 10.1016/0921-5093(94)09682-1 PG 11 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA RE690 UT WOS:A1995RE69000007 ER PT J AU BECHER, PF HSUEH, CH WATERS, SB AF BECHER, PF HSUEH, CH WATERS, SB TI THERMAL-EXPANSION ANISOTROPY IN HOT-PRESSED SIC-WHISKER-REINFORCED ALUMINA COMPOSITES SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE THERMAL EXPANSION ANISOTROPY; HOT PRESSING; SIC WHISKERS; ALUMINA COMPOSITES AB The measured linear thermal expansion coefficients alpha of hot-pressed SiC-whisker-reinforced aluminas decrease as the SiC whisker content is increased from 1 to 60 vol.%. However, owing to the preferred orientation of the whiskers, the alpha value for each SiC whisker content is greater in the direction parallel compared with the direction perpendicular, to the hot-pressing axis. The observed behavior is generally consistent with that predicted by a model based on the effects of internal thermal mechanical mismatch strains in composites with oriented reinforcements. RP BECHER, PF (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN 37831, USA. RI Hsueh, Chun-Hway/G-1345-2011 NR 10 TC 6 Z9 6 U1 0 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD JUN 15 PY 1995 VL 196 IS 1-2 BP 249 EP 251 DI 10.1016/0921-5093(94)09687-2 PG 3 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA RE690 UT WOS:A1995RE69000032 ER PT J AU TRANQUADA, JM STERNLIEB, BJ AXE, JD NAKAMURA, Y UCHIDA, S AF TRANQUADA, JM STERNLIEB, BJ AXE, JD NAKAMURA, Y UCHIDA, S TI EVIDENCE FOR STRIPE CORRELATIONS OF SPINS AND HOLES IN COPPER-OXIDE SUPERCONDUCTORS SO NATURE LA English DT Article ID STRUCTURAL PHASE-TRANSITION; NEUTRON-SCATTERING; FERMI-LIQUID; LA2-XBAXCUO4; APPROXIMATION; FLUCTUATIONS; SEPARATION; NMR AB ONE Of the long-standing mysteries associated with the high-temperature copper oxide superconductors concerns the anomalous suppression(1) of superconductivity in La2-xBaxCuO4 (and certain related compounds) when the hole concentration x is near 1/8. Here we examine the possibility that this effect is related to dynamical two-dimensional spin correlations, incommensurate with the crystal lattice, that have been observed in La2-xSrxCuO4 by neutron scattering(2-4). A possible explanation for the incommensurability involves a coupled, dynamical modulation of spin and charge in which antiferromagnetic 'stripes' of copper spins are separated by periodically spaced domain walls to which the holes segregate(5-9). An ordered stripe phase of this type has recently been observed in hole-doped La2NiO4 (refs 10-12). We present evidence from neutron diffraction that in the copper oxide material La1.6-xNd0.4SrxCuO4, with x=0.12, a static analogue of the dynamical stripe phase is present, and is associated with an anomalous suppression of superconductivity(13,14). Our results thus provide an explanation of the '1/8' conundrum, and also support the suggestion(15) that spatial modulations of spin and charge density are related to superconductivity in the copper oxides. C1 UNIV TOKYO,SUPERCOND RES COURSE,BUNKYO KU,TOKYO 113,JAPAN. RP TRANQUADA, JM (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. RI Tranquada, John/A-9832-2009; Nakamura, Yasunobu/H-1300-2012 OI Tranquada, John/0000-0003-4984-8857; NR 27 TC 2306 Z9 2310 U1 21 U2 206 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD JUN 15 PY 1995 VL 375 IS 6532 BP 561 EP 563 DI 10.1038/375561a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RD287 UT WOS:A1995RD28700043 ER PT J AU JUNCK, KL AF JUNCK, KL TI BEAM POSITION CORRECTION IN THE FERMILAB HIGH-ENERGY LINAC SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB The Fermilab Linac has been upgraded by the replacement of four 201.25 MHz drift tube linac tanks with seven 805 MHz side-coupled cavity modules. The reduction in physical aperture of the side-coupled modules has made control of the transverse beam position a more important consideration. An algorithm has been implemented to achieve a global least-squares minimization of beam position errors. Under typical operating conditions the RMS error in the horizontal plane is reduced by a factor of 8 (from 0.54 mm to 0.07 mm) and in the vertical plane by a factor of 4 (from 0.59 mm to 0.14 mm). RP JUNCK, KL (reprint author), FERMILAB NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUN 15 PY 1995 VL 360 IS 3 BP 463 EP 466 DI 10.1016/0168-9002(94)01737-9 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RD378 UT WOS:A1995RD37800001 ER PT J AU FIELD, C AF FIELD, C TI THE WIRE SCANNER SYSTEM OF THE FINAL FOCUS TEST BEAM AT SLAC SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID SLC COLLISION POINT; SIZE MONITOR AB The system of wire scanners in use at the FFTB at SLAG is described. In addition to the scanners themselves, there is a discussion of detectors for the scattering from the wires, and of the procedure for handling beam spots of large aspect ratio. RP FIELD, C (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 10 TC 12 Z9 12 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUN 15 PY 1995 VL 360 IS 3 BP 467 EP 475 DI 10.1016/0168-9002(95)00077-1 PG 9 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RD378 UT WOS:A1995RD37800002 ER PT J AU LIU, JC NELSON, WR AF LIU, JC NELSON, WR TI SYNCHROTRON-RADIATION CALCULATIONS USING THE EGS4 CODE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB Distributions of synchrotron radiation intensity as a function of photon energy and opening angle are complicated which, together with elaborate geometries, make the Monte Carlo technique the method of choice for most synchrotron radiation calculations. This paper presents synchrotron radiation calculations using the EGS4 Monte Carlo code. Two examples related to the SLAG PEP-II project are given. The first is the calculation of the dose to the magnet coil insulation from synchrotron radiation escaping the stainless steel vacuum chamber in the straight sections of the Nigh Energy Ring. Emphasis is given on the spectral sampling and the normalization of the Monte Carlo dose results. The second is the calculation of the dose environment in the tunnel resulting from synchrotron radiation escaping the aluminum vacuum chamber and antechamber of the Low Energy Ring with emphasis on the opening-angle profile. RP LIU, JC (reprint author), STANFORD LINEAR ACCELERATOR CTR,MS 48,POB 4349,STANFORD,CA 94309, USA. NR 13 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUN 15 PY 1995 VL 360 IS 3 BP 626 EP 633 DI 10.1016/0168-9002(95)00128-X PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RD378 UT WOS:A1995RD37800017 ER PT J AU SONG, IH RICKETT, B JANAVICIUS, P PAYER, JH ANTONIO, MR AF SONG, IH RICKETT, B JANAVICIUS, P PAYER, JH ANTONIO, MR TI IN-SITU TOTAL-ELECTRON-YIELD SULFUR K-EDGE XAFS MEASUREMENTS DURING EXPOSURE OF COPPER TO AN SO2-CONTAINING HUMID ATMOSPHERE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID ABSORPTION FINE-STRUCTURE; RAY; SPECTRA; DETECTOR; SURFACE; INSITU AB A total-electron-yield (TEY) detector was designed and constructed for in situ X-ray absorption fine structure (XAFS) measurements of the sulfur-containing species formed during exposure of copper to a humid atmosphere containing SO2. Using the detector, gas phase XAFS spectra were also collected for both dry and humid SO2 atmospheres. This work presents the experimental technique and examples of the sulfur K-edge spectra collected during the study. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP SONG, IH (reprint author), CASE WESTERN RESERVE UNIV,CASE SCH ENGN,DEPT MAT SCI & ENGN,CLEVELAND,OH 44106, USA. NR 25 TC 24 Z9 24 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JUN 15 PY 1995 VL 360 IS 3 BP 634 EP 641 DI 10.1016/0168-9002(95)00134-4 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RD378 UT WOS:A1995RD37800018 ER PT J AU NILSEN, J MORENO, JC AF NILSEN, J MORENO, JC TI LASING AT 7.9 NM IN NICKEL-LIKE NEODYMIUM SO OPTICS LETTERS LA English DT Article ID X-RAY LASER; HIGH-GAIN; AMPLIFICATION; AMPLIFIER AB Using a series of 150-ps pulses from the Nova laser to illuminate neodymium slab targets, we observe a 38-ps-duration lasing pulse at 7.906 nm in nickellike neodymium on the J = 0 --> 1, 4d --> 4p transition. To overcome the low gain in this system, we used a traveling-wave geometry in conjunction with two slab targets that were coupled lengthwise to increase the effective length and whose surfaces were curved to compensate partially for refraction effects. RP NILSEN, J (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 16 TC 50 Z9 53 U1 1 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUN 15 PY 1995 VL 20 IS 12 BP 1386 EP 1388 DI 10.1364/OL.20.001386 PG 3 WC Optics SC Optics GA RD232 UT WOS:A1995RD23200012 PM 19862023 ER PT J AU GREENFIELD, SR WASIELEWSKI, MR AF GREENFIELD, SR WASIELEWSKI, MR TI NEAR-TRANSFORM-LIMITED VISIBLE AND NEAR-IR FEMTOSECOND PULSES FROM OPTICAL PARAMETRIC AMPLIFICATION USING TYPE-II BETA-BARIUM BORATE SO OPTICS LETTERS LA English DT Article ID 2ND-HARMONIC GENERATION; BETA-BAB2O4 AB Type II phase-matched beta-barium borate is used in the first stage of amplification of a white-light continuum in a two-stage optical parametric amplifier pumped by the second harmonic of a regeneratively amplified Ti:sapphire laser system operating at 824 nm. Near-transform-limited sub-190-fs pulses with microjoule energies are achieved in the signal branch, which is tunable from 475 nm to degeneracy. This system effectively bridges the wavelength gap between the fundamental and the second harmonic of amplified Ti:sapphire laser systems. C1 NORTHWESTERN UNIV, DEPT CHEM, EVANSTON, IL 60208 USA. RP GREENFIELD, SR (reprint author), ARGONNE NATL LAB, DIV CHEM, 9700 S CASS AVE, ARGONNE, IL 60439 USA. NR 15 TC 84 Z9 84 U1 2 U2 5 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUN 15 PY 1995 VL 20 IS 12 BP 1394 EP 1396 DI 10.1364/OL.20.001394 PG 3 WC Optics SC Optics GA RD232 UT WOS:A1995RD23200015 PM 19862026 ER PT J AU WARREN, ME SMITH, RE VAWTER, GA WENDT, JR AF WARREN, ME SMITH, RE VAWTER, GA WENDT, JR TI HIGH-EFFICIENCY SUBWAVELENGTH DIFFRACTIVE OPTICAL-ELEMENT IN GAAS FOR 975 NM SO OPTICS LETTERS LA English DT Article ID GRATINGS AB We have fabricated subwavelength diffractive optical elements with binary phase profiles for operation at 975 nm. The individual surface-relief features of the elements are smaller than the wavelength of light in the material. By modulating the size and spacing of the features we form artificial, gradient, effective index-of-refraction surfaces. The blazed transmission gratings were designed with rigorous coupled-wave analysis and fabricated by direct-write electron-beam lithography and reactive ion-beam etching in GaAs. The gratings have minimum features 63 nm wide. Transmission measurements show 85% diffraction efficiency into the first order. RP WARREN, ME (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 13 TC 33 Z9 36 U1 0 U2 7 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUN 15 PY 1995 VL 20 IS 12 BP 1441 EP 1443 DI 10.1364/OL.20.001441 PG 3 WC Optics SC Optics GA RD232 UT WOS:A1995RD23200031 PM 19862042 ER PT J AU BRAND, HR DEISSLER, RJ AF BRAND, HR DEISSLER, RJ TI STABLE SPATIALLY LOCALIZED SOLUTIONS AND HOLES IN OPTICAL BISTABILITY SO PHYSICA A LA English DT Article ID TRAVELING-WAVE CONVECTION; WEAKLY INVERTED BIFURCATION; BINARY-FLUID CONVECTION; EVOLUTION; STATES; PULSES; EQUATIONS; MIXTURES; SOLITONS; VORTICES AB We investigate the spatial behavior of the electric field for optical bistability in the good cavity limit. We show that stable spatially localized solutions exist in one and two dimensions. In addition we find that stable one-dimensional hole solutions also arise in this driven non-eqilibrium system with dissipation and dispersion thus demonstrating that stable holes are not restricted to dispersive systems, but can emerge in strongly dissipative systems as well. A critical comparison with the properties of stable localized solutions in other driven dissipative systems is also included. C1 UNIV BAYREUTH,D-95440 BAYREUTH,GERMANY. RP BRAND, HR (reprint author), LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,MS B258,LOS ALAMOS,NM 87545, USA. NR 43 TC 13 Z9 13 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 JUN 15 PY 1995 VL 216 IS 3 BP 288 EP 298 DI 10.1016/0378-4371(95)00072-F PG 11 WC Physics, Multidisciplinary SC Physics GA RE902 UT WOS:A1995RE90200008 ER PT J AU MCCORMACK, R DEFONTAINE, D WOLVERTON, C CEDER, G AF MCCORMACK, R DEFONTAINE, D WOLVERTON, C CEDER, G TI NONEMPIRICAL PHASE-EQUILIBRIA IN THE W-MO-CR SYSTEM SO PHYSICAL REVIEW B LA English DT Article ID EFFECTIVE CLUSTER INTERACTIONS; TRANSITION-METAL ALLOYS; COHERENT POTENTIAL APPROXIMATION; 1ST-PRINCIPLES CALCULATION; INTERMETALLIC COMPOUNDS; STRUCTURAL STABILITY; DIAGRAM CALCULATIONS; ELECTRONIC-STRUCTURE; VARIATION FORMALISM; AL C1 NATL RENEWABLE ENERGY LAB, GOLDEN, CO 80401 USA. MIT, DEPT MAT SCI, CAMBRIDGE, MA 02139 USA. RP MCCORMACK, R (reprint author), UNIV CALIF BERKELEY, DEPT MAT SCI & MINERAL ENGN, BERKELEY, CA 94720 USA. RI Wolverton, Christopher/B-7542-2009 NR 69 TC 20 Z9 20 U1 2 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 15808 EP 15822 DI 10.1103/PhysRevB.51.15808 PG 15 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200012 ER PT J AU CAI, ZX SEN, S WELCH, DO AF CAI, ZX SEN, S WELCH, DO TI STRUCTURE AND DYNAMICS OF 2-DIMENSIONAL LATTICES IN RANDOM PINNING POTENTIALS SO PHYSICAL REVIEW B LA English DT Article ID II SUPERCONDUCTORS; MOLECULAR-DYNAMICS; IMPERFECT SURFACE; 2 DIMENSIONS; GRAPHITE; SIMULATION; SUBSTRATE; DIFFUSION; SYSTEMS; LIQUID C1 SUNY BUFFALO,DEPT PHYS,BUFFALO,NY 14260. RP CAI, ZX (reprint author), BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973, USA. NR 43 TC 6 Z9 6 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 15873 EP 15878 DI 10.1103/PhysRevB.51.15873 PG 6 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200021 ER PT J AU BONCA, J JAKLIC, J AF BONCA, J JAKLIC, J TI SPIN-DIFFUSION OF THE T-J MODEL SO PHYSICAL REVIEW B LA English DT Article ID HEISENBERG-ANTIFERROMAGNET; LA2CUO4; TEMPERATURE; RELAXATION C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. UNIV LJUBLJANA,JOZEF STEFAN INST,LJUBLJANA 61111,SLOVENIA. RP BONCA, J (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 16 TC 8 Z9 8 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 16083 EP 16087 DI 10.1103/PhysRevB.51.16083 PG 5 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200044 ER PT J AU LIU, L NOWAK, ER JAEGER, HM VUCHIC, BV MERKLE, KL BUCHHOLZ, DB CHANG, RPH AF LIU, L NOWAK, ER JAEGER, HM VUCHIC, BV MERKLE, KL BUCHHOLZ, DB CHANG, RPH TI HIGH-ANGLE GRAIN-BOUNDARY JUNCTIONS IN YBA2CU3O7 - NORMAL-STATE RESISTANCE AND 1/F NOISE SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; THIN-FILMS; BICRYSTALS C1 UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60208. RP LIU, L (reprint author), UNIV CHICAGO,JAMES FRANCK INST,5640 S ELLIS AVE,CHICAGO,IL 60637, USA. RI Chang, R.P.H/B-7505-2009 NR 23 TC 1 Z9 1 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 16164 EP 16167 DI 10.1103/PhysRevB.51.16164 PG 4 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200054 ER PT J AU MARCHETTI, MC VINOKUR, VM AF MARCHETTI, MC VINOKUR, VM TI TWIN-BOUNDARY PINNING OF SUPERCONDUCTING VORTEX ARRAYS SO PHYSICAL REVIEW B LA English DT Article ID BOSON LOCALIZATION; HOPPING CONDUCTIVITY; YBA2CU3O7 CRYSTALS; COLUMNAR DEFECTS; SINGLE-CRYSTALS; FLUX; FILMS C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP MARCHETTI, MC (reprint author), SYRACUSE UNIV,DEPT PHYS,SYRACUSE,NY 13244, USA. NR 37 TC 10 Z9 10 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 16276 EP 16288 DI 10.1103/PhysRevB.51.16276 PG 13 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200068 ER PT J AU BARON, AQR CHUMAKOV, AI RUBY, SL ARTHUR, J BROWN, GS SMIRNOV, GV VANBURCK, U AF BARON, AQR CHUMAKOV, AI RUBY, SL ARTHUR, J BROWN, GS SMIRNOV, GV VANBURCK, U TI NUCLEAR RESONANT SCATTERING OF SYNCHROTRON-RADIATION BY GASEOUS KRYPTON SO PHYSICAL REVIEW B LA English DT Note ID DIFFRACTION C1 EUROPEAN SYNCHROTRON RADIAT FACIL,F-38043 GRENOBLE,FRANCE. UNIV CALIF SANTA CRUZ,DEPT PHYS,SANTA CRUZ,CA 95064. RUSSIAN RES CTR,KURCHATOV INST,MOSCOW 123182,RUSSIA. TECH UNIV MUNICH,DEPT PHYS,D-85747 GARCHING,GERMANY. RP BARON, AQR (reprint author), STANFORD LINEAR ACCELERATOR CTR,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94309, USA. NR 26 TC 23 Z9 23 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 16384 EP 16387 DI 10.1103/PhysRevB.51.16384 PG 4 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200077 ER PT J AU MAHAN, GD AF MAHAN, GD TI SUPERCONDUCTING TRANSITION-TEMPERATURES FROM ANISOTROPIC INTERACTIONS SO PHYSICAL REVIEW B LA English DT Note ID LARGE GAP ANISOTROPY; A-B PLANE; DEPENDENCE; STATE; BI2SR2CACU2O8+DELTA; COPPER C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. RP MAHAN, GD (reprint author), UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996, USA. NR 20 TC 0 Z9 0 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 16452 EP 16455 DI 10.1103/PhysRevB.51.16452 PG 4 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200095 ER PT J AU BERLINER, R SMITH, HG COPLEY, JRD TRIVISONNO, J AF BERLINER, R SMITH, HG COPLEY, JRD TRIVISONNO, J TI STRUCTURES OF SODIUM METAL - REPLY SO PHYSICAL REVIEW B LA English DT Note ID MARTENSITIC PHASE-TRANSFORMATION; BCC; LITHIUM; TRANSITION C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. NIST,DIV REACTOR RADIAT,GAITHERSBURG,MD 20899. JOHN CARROLL UNIV,DEPT PHYS,CLEVELAND,OH 44118. RP BERLINER, R (reprint author), UNIV MISSOURI,CTR RES REACTOR,COLUMBIA,MO 65203, USA. NR 13 TC 1 Z9 1 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 22 BP 16467 EP 16469 DI 10.1103/PhysRevB.51.16467 PG 3 WC Physics, Condensed Matter SC Physics GA RD552 UT WOS:A1995RD55200099 ER PT J AU CHAN, CT YU, QL HO, KM AF CHAN, CT YU, QL HO, KM TI ORDER-N SPECTRAL METHOD FOR ELECTROMAGNETIC-WAVES SO PHYSICAL REVIEW B LA English DT Article ID EFFECTIVE DIELECTRIC-CONSTANT; PHOTONIC BAND-GAPS; PERIODIC STRUCTURES; DENSITY-MATRIX; MEDIA; SCATTERING; EXISTENCE; COMPOSITE C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. RP CHAN, CT (reprint author), IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011, USA. NR 38 TC 262 Z9 290 U1 2 U2 12 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 23 BP 16635 EP 16642 DI 10.1103/PhysRevB.51.16635 PG 8 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000013 ER PT J AU FUCHS, HD WALUKIEWICZ, W HALLER, EE DONDL, W SCHORER, R ABSTREITER, G RUDNEV, AI TIKHOMIROV, AV OZHOGIN, VI AF FUCHS, HD WALUKIEWICZ, W HALLER, EE DONDL, W SCHORER, R ABSTREITER, G RUDNEV, AI TIKHOMIROV, AV OZHOGIN, VI TI GERMANIUM GE-70/GE-74 ISOTOPE HETEROSTRUCTURES - AN APPROACH TO SELF-DIFFUSION STUDIES SO PHYSICAL REVIEW B LA English DT Article ID ENHANCED IMPURITY DIFFUSION; GAAS C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. TECH UNIV MUNICH,WALTER SCHOTTKY INST,D-85748 GARCHING,GERMANY. IV KURCHATOV ATOM ENERGY INST,RRC,MOSCOW 123182,RUSSIA. NR 26 TC 66 Z9 66 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 23 BP 16817 EP 16821 DI 10.1103/PhysRevB.51.16817 PG 5 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000036 ER PT J AU GLUTSCH, S CHEMLA, DS BECHSTEDT, F AF GLUTSCH, S CHEMLA, DS BECHSTEDT, F TI FANO RESONANCES IN THE OPTICAL-SPECTRA OF SEMICONDUCTOR QUANTUM STRUCTURES SO PHYSICAL REVIEW B LA English DT Article ID BAND STRUCTURE; WELLS; WIRES; MAGNETOEXCITONS; EXCITONS C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV SCI MAT,BERKELEY,CA 94720. UNIV JENA,D-07743 JENA,GERMANY. RP GLUTSCH, S (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94729, USA. NR 22 TC 25 Z9 25 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 23 BP 16885 EP 16890 DI 10.1103/PhysRevB.51.16885 PG 6 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000045 ER PT J AU LARESE, JZ ZHANG, QM AF LARESE, JZ ZHANG, QM TI PHASE-TRANSITIONS OF ARGON MULTILAYER FILMS ON GRAPHITE - EVOLUTION FROM MULTILAYER FILM TO BULK SOLID SO PHYSICAL REVIEW B LA English DT Article ID LAYERING TRANSITIONS; NEUTRON-DIFFRACTION; TRILAYER FILMS; ADSORPTION; SCATTERING; MONOLAYER; SURFACES; GROWTH RP LARESE, JZ (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. NR 24 TC 15 Z9 15 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 23 BP 17023 EP 17027 DI 10.1103/PhysRevB.51.17023 PG 5 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000059 ER PT J AU WEINERT, M WATSON, RE AF WEINERT, M WATSON, RE TI CORE-LEVEL SHIFTS IN BULK ALLOYS AND SURFACE ADLAYERS SO PHYSICAL REVIEW B LA English DT Article ID BINDING-ENERGY SHIFTS; ELECTRONIC-STRUCTURE; PHOTOELECTRON-SPECTROSCOPY; SEGREGATION ENERGIES; ORBITAL METHOD; WORK FUNCTION; GOLD ALLOYS; PD; PHOTOEMISSION; PALLADIUM RP BROOKHAVEN NATL LAB, DEPT PHYS, UPTON, NY 11973 USA. NR 44 TC 106 Z9 106 U1 2 U2 18 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 23 BP 17168 EP 17180 DI 10.1103/PhysRevB.51.17168 PG 13 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000076 ER PT J AU LIU, F MOSTOLLER, M MILMAN, V CHISHOLM, MF KAPLAN, T AF LIU, F MOSTOLLER, M MILMAN, V CHISHOLM, MF KAPLAN, T TI ELECTRONIC AND ELASTIC PROPERTIES OF EDGE DISLOCATIONS IN SI SO PHYSICAL REVIEW B LA English DT Note ID POTENTIALS; SILICON RP LIU, F (reprint author), OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831, USA. RI Milman, Victor/M-6117-2015 OI Milman, Victor/0000-0003-2258-1347 NR 14 TC 52 Z9 52 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 23 BP 17192 EP 17195 DI 10.1103/PhysRevB.51.17192 PG 4 WC Physics, Condensed Matter SC Physics GA RF570 UT WOS:A1995RF57000080 ER PT J AU RHEE, JY AF RHEE, JY TI OPTICAL-PROPERTIES AND ELECTRONIC-STRUCTURES OF ALPHA-CE AND GAMMA-CE SO PHYSICAL REVIEW B LA English DT Article ID KONDO VOLUME-COLLAPSE; PHASE-TRANSITION; SPECTROSCOPIC ELLIPSOMETRY; MAGNETIC-SUSCEPTIBILITY; DETAILED ANALYSIS; CERIUM; PHOTOEMISSION; PRESSURE; SURFACE; METAL C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. RP RHEE, JY (reprint author), HOSEI UNIV,COLL NAT SCI,DEPT PHYS,CHOONGNAM 336795,SOUTH KOREA. RI Rhee, Joo/D-2987-2011 NR 52 TC 4 Z9 4 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 24 BP 17390 EP 17397 DI 10.1103/PhysRevB.51.17390 PG 8 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700007 ER PT J AU WANG, LW ZUNGER, A AF WANG, LW ZUNGER, A TI LOCAL-DENSITY-DERIVED SEMIEMPIRICAL PSEUDOPOTENTIALS SO PHYSICAL REVIEW B LA English DT Article ID II-VI COMPOUNDS; TEMPERATURE-DEPENDENCE; SILICON; STATES; SEMICONDUCTORS; PHOTOEMISSION; ENERGY; CDSE; GAP; SI RP NATL RENEWABLE ENERGY LAB, GOLDEN, CO 80401 USA. RI Zunger, Alex/A-6733-2013 NR 82 TC 161 Z9 161 U1 1 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 JUN 15 PY 1995 VL 51 IS 24 BP 17398 EP 17416 DI 10.1103/PhysRevB.51.17398 PG 19 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700008 ER PT J AU HONG, S MAHAN, GD AF HONG, S MAHAN, GD TI SPIN-POLARIZED HARTREE-FOCK APPROXIMATION AT NONZERO TEMPERATURES SO PHYSICAL REVIEW B LA English DT Article ID DENSITY-FUNCTIONAL FORMALISM; FINITE TEMPERATURES; CORRELATION POTENTIALS; EXPECTATION VALUES; EXCHANGE; SUSCEPTIBILITY; SYSTEMS; ENERGY; ATOMS C1 UNIV TENNESSEE, DEPT PHYS & ASTRON, KNOXVILLE, TN 37996 USA. OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37831 USA. RP UNIV PENN, DEPT PHYS, PHILADELPHIA, PA 19104 USA. NR 42 TC 2 Z9 2 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 JUN 15 PY 1995 VL 51 IS 24 BP 17417 EP 17430 DI 10.1103/PhysRevB.51.17417 PG 14 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700009 ER PT J AU FAST, L WILLS, JM JOHANSSON, B ERIKSSON, O AF FAST, L WILLS, JM JOHANSSON, B ERIKSSON, O TI ELASTIC-CONSTANTS OF HEXAGONAL TRANSITION-METALS - THEORY SO PHYSICAL REVIEW B LA English DT Article ID BRILLOUIN-ZONE; SPECIAL POINTS; SYSTEMS; BAND C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87544. RP FAST, L (reprint author), UNIV UPPSALA,DEPT PHYS,CONDENSED MATTER THEORY GRP,BOX 530,UPPSALA,SWEDEN. RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 18 TC 382 Z9 395 U1 4 U2 37 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 24 BP 17431 EP 17438 DI 10.1103/PhysRevB.51.17431 PG 8 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700010 ER PT J AU FU, C DONIACH, S AF FU, C DONIACH, S TI MODEL FOR A STRONGLY CORRELATED INSULATOR - FESI SO PHYSICAL REVIEW B LA English DT Article ID HUBBARD-MODEL; INFINITE DIMENSIONS; LATTICE; TEMPERATURE; FERMIONS C1 STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87544. RP FU, C (reprint author), STANFORD UNIV,DEPT APPL PHYS,STANFORD,CA 94305, USA. NR 22 TC 51 Z9 51 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 24 BP 17439 EP 17445 DI 10.1103/PhysRevB.51.17439 PG 7 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700011 ER PT J AU FU, LP BACALZO, FT GILLILAND, GD CHEN, R BAJAJ, KK KLEM, J AF FU, LP BACALZO, FT GILLILAND, GD CHEN, R BAJAJ, KK KLEM, J TI CW PHOTOLUMINESCENCE DETERMINATION OF THERMALLY ACTIVATED FAST X-]GAMMA INTERLAYER ELECTRON-SCATTERING IN TYPE-II GAAS/ALAS SUPERLATTICES SO PHYSICAL REVIEW B LA English DT Article ID QUANTUM-WELL STRUCTURES; TRANSPORT; GAAS C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RP FU, LP (reprint author), EMORY UNIV,DEPT PHYS,ATLANTA,GA 30322, USA. NR 16 TC 12 Z9 13 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 24 BP 17630 EP 17634 DI 10.1103/PhysRevB.51.17630 PG 5 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700033 ER PT J AU DAWSON, MD DUGGAN, G ARENT, DJ AF DAWSON, MD DUGGAN, G ARENT, DJ TI OPTICAL MEASUREMENTS OF ELECTRONIC BAND-STRUCTURE IN TENSILE STRAIN (GA,IN)P-(AL,GA,IN)P QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Article ID SEMICONDUCTOR-LASERS; OFFSETS C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. RP DAWSON, MD (reprint author), SHARP LABS EUROPE LTD,EDMUND HALLEY RD,OXFORD SCI PK,OXFORD OX4 4GA,ENGLAND. NR 23 TC 12 Z9 12 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 24 BP 17660 EP 17666 DI 10.1103/PhysRevB.51.17660 PG 7 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700038 ER PT J AU FEIBELMAN, PJ AF FEIBELMAN, PJ TI ANISOTROPY OF THE STRESS ON FCC(110) SURFACES SO PHYSICAL REVIEW B LA English DT Article ID METAL-SURFACES; RECONSTRUCTION; MODEL; AU(111); PSEUDOPOTENTIALS; RELAXATIONS; DIFFRACTION; DOMAINS; PT(111); PD(110) RP FEIBELMAN, PJ (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 55 TC 65 Z9 65 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 24 BP 17867 EP 17875 DI 10.1103/PhysRevB.51.17867 PG 9 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700063 ER PT J AU WONG, LW JIANG, HW TRIVEDI, N PALM, E AF WONG, LW JIANG, HW TRIVEDI, N PALM, E TI DISORDER-TUNED TRANSITION BETWEEN A QUANTUM HALL LIQUID AND HALL INSULATOR SO PHYSICAL REVIEW B LA English DT Note ID MAGNETIC-FIELD; CRITICAL EXPONENT; DELOCALIZATION; LOCALIZATION; CONDUCTIVITY; BOSONS; FILMS C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. NATL HIGH MAGNET FIELD LAB,TALLAHASSEE,FL 32306. RP WONG, LW (reprint author), UNIV CALIF LOS ANGELES,DEPT PHYS,405 HILGARD AVE,LOS ANGELES,CA 90024, USA. NR 27 TC 42 Z9 43 U1 3 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JUN 15 PY 1995 VL 51 IS 24 BP 18033 EP 18036 DI 10.1103/PhysRevB.51.18033 PG 4 WC Physics, Condensed Matter SC Physics GA RF857 UT WOS:A1995RF85700091 ER PT J AU HARTLE, JB LAFLAMME, R MAROLF, D AF HARTLE, JB LAFLAMME, R MAROLF, D TI CONSERVATION-LAWS IN THE QUANTUM-MECHANICS OF CLOSED SYSTEMS SO PHYSICAL REVIEW D LA English DT Article ID LOGICAL REFORMULATION C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV CAMBRIDGE,ISAAC NEWTON INST MATH SCI,CAMBRIDGE CB3 0EH,ENGLAND. PENN STATE UNIV,DEPT PHYS,CTR GRAVITAT PHYS & GEOMETRY,UNIVERSITY PK,PA 16802. RP HARTLE, JB (reprint author), UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106, USA. NR 18 TC 30 Z9 30 U1 0 U2 2 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 JUN 15 PY 1995 VL 51 IS 12 BP 7007 EP 7016 DI 10.1103/PhysRevD.51.7007 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RE671 UT WOS:A1995RE67100041 ER PT J AU CHANOWITZ, MS AF CHANOWITZ, MS TI PROBING FOR ULTRAHEAVY QUANTA AT LHC SO PHYSICS LETTERS B LA English DT Article ID ENERGY-MOMENTUM-TENSOR; STRONG W+W+ SCATTERING; BOSON PAIR PRODUCTION; HEAVY-HIGGS-BOSON; WEAK INTERACTIONS; PHOTON-PHOTON; GLUON FUSION; W-BOSON; TRACE; MASS AB Experiments at the LHC are sensitive to the presence or absence of matter quanta at mass scales far beyond the scales they can probe directly. The production of Z boson pairs by gluon-gluon fusion is greatly enhanced if there are ultraheavy quanta that carry SU(3)(Color) and get their mass from electroweak symmetry breaking. For example, a fourth generation quark doublet with an arbitrarily heavy mass would induce a large excess in the ZZ yield that could be detected at the LHC with only similar or equal to 10% of the design luminosity. RP CHANOWITZ, MS (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,THEORET PHYS GRP,BERKELEY,CA 94720, USA. NR 33 TC 13 Z9 13 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 JUN 15 PY 1995 VL 352 IS 3-4 BP 376 EP 381 DI 10.1016/0370-2693(95)00477-3 PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RF366 UT WOS:A1995RF36600027 ER PT J AU LANE, K EICHTEN, E AF LANE, K EICHTEN, E TI NATURAL TOPCOLOR-ASSISTED TECHNICOLOR SO PHYSICS LETTERS B LA English DT Article ID ELECTROWEAK SYMMETRY-BREAKING; QUARK CONDENSATE; STANDARD MODEL; CHIRAL HIERARCHIES; ISOSPIN-SYMMETRY; HYPERCOLOR; MASS; ALIGNMENT; DYNAMICS; BOSONS AB We construct a prototype of topcolor-assisted technicolor in which, although both top and bottom quarks acquire some mass from extended technicolor, strong U(1) couplings of technifermions are isospin symmetric and all gauge anomalies vanish. There is a mechanism for mixing between the light and heavy generations and there need be no very light pseudo-Goldstone bosons. C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP LANE, K (reprint author), BOSTON UNIV,DEPT PHYS,590 COMMONWEALTH AVE,BOSTON,MA 02215, USA. NR 45 TC 251 Z9 254 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 JUN 15 PY 1995 VL 352 IS 3-4 BP 382 EP 387 DI 10.1016/0370-2693(95)00482-Z PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RF366 UT WOS:A1995RF36600028 ER PT J AU ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALPAT, B ALCARAZ, J ALLABY, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDREEV, VP ANGELESCU, T ANTREASYAN, D AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BARTALINI, P BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BRIGLJEVIC, V BROCK, IC BUJAK, A BURGER, JD BURGER, WJ BURGOS, C BUSENITZ, J BUYTENHUIJS, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLINI, G CASTELLO, R CAVALLO, N CECCHI, C CERRADA, M CESARONI, F CHAMIZO, M CHAN, A CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, GM CHEN, HF CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COMMICHAU, V COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEBOECK, H DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIONISI, C DITTMAR, M DOMINGUEZ, A DORIA, A DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUINKER, P DURAN, I DUTTA, S EASO, S EFREMENKO, Y ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC ERNENWEIN, JP EXTERMANN, P FABBRETTI, R FABRE, M FACCINI, R FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, JH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GANGULI, SN GARCIAABIA, P GAU, SS GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GU, C GUANZIROLI, M GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HARTMANN, B HASAN, A HE, JT HEBBEKER, T HERVE, A HILGERS, K VANHOEK, WC HOFER, H HOORANI, H HOU, SR HU, G ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRENZ, W KUIJTEN, H KUNIN, A DEGUEVARA, PL LANDI, G LAPOINT, C LASSILAPERINI, K LAURIKAINEN, P LEBEAU, M LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, J LECOQ, P LECOULTRE, P LEE, JS LEE, KY LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTE, L LIU, Y LIU, ZA LOHMANN, W LONGO, E LU, W LU, YS LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACCHIOLO, A MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A VANMIL, AJW MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MOORE, R MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAHN, S NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODIN, J RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSSELET, P VANROSSUM, W ROTH, S RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOENEICH, B SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEVCHENKO, S SHIVAROV, N SHOUTKO, V SHUKLA, J SHUMILOV, E SON, D SOPCZAK, A SOULIMOV, V SMITH, B SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STOYANOV, B STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUCHSCHERER, H ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOELKERT, R VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEILL, R WILLMOTT, C WITTGENSTEIN, F WU, SX WYNHOFF, S XU, J XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZALITE, A ZEMP, P ZENG, JY ZENG, M ZENG, Y ZHANG, Z ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHOU, Y ZHU, GY ZHU, RY ZICHICHI, A VANDERZWAAN, BCC AF ACCIARRI, M ADAM, A ADRIANI, O AGUILARBENITEZ, M AHLEN, S ALPAT, B ALCARAZ, J ALLABY, J ALOISIO, A ALVERSON, G ALVIGGI, MG AMBROSI, G AN, Q ANDERHUB, H ANDREEV, VP ANGELESCU, T ANTREASYAN, D AREFIEV, A AZEMOON, T AZIZ, T BABA, PVKS BAGNAIA, P BAKSAY, L BALL, RC BANERJEE, S BANICZ, K BARILLERE, R BARONE, L BARTALINI, P BASCHIROTTO, A BASILE, M BATTISTON, R BAY, A BECATTINI, F BECKER, U BEHNER, F BENCZE, GL BERDUGO, J BERGES, P BERTUCCI, B BETEV, BL BIASINI, M BILAND, A BILEI, GM BIZZARRI, R BLAISING, JJ BOBBINK, GJ BOCK, R BOHM, A BORGIA, B BOUCHAM, A BOURILKOV, D BOURQUIN, M BOUTIGNY, D BOUWENS, B BRAMBILLA, E BRANSON, JG BRIGLJEVIC, V BROCK, IC BUJAK, A BURGER, JD BURGER, WJ BURGOS, C BUSENITZ, J BUYTENHUIJS, A CAI, XD CAPELL, M ROMEO, GC CARIA, M CARLINO, G CARTACCI, AM CASAUS, J CASTELLINI, G CASTELLO, R CAVALLO, N CECCHI, C CERRADA, M CESARONI, F CHAMIZO, M CHAN, A CHANG, YH CHATURVEDI, UK CHEMARIN, M CHEN, A CHEN, C CHEN, G CHEN, GM CHEN, HF CHEN, HS CHEN, M CHIEFARI, G CHIEN, CY CHOI, MT CIFARELLI, L CINDOLO, F CIVININI, C CLARE, I CLARE, R COAN, TE COHN, HO COIGNET, G COLINO, N COMMICHAU, V COSTANTINI, S COTOROBAI, F DELACRUZ, B CUI, XT CUI, XY DAI, TS DALESSANDRO, R DEASMUNDIS, R DEBOECK, H DEGRE, A DEITERS, K DENES, E DENES, P DENOTARISTEFANI, F DIBITONTO, D DIEMOZ, M DIONISI, C DITTMAR, M DOMINGUEZ, A DORIA, A DORNE, I DOVA, MT DRAGO, E DUCHESNEAU, D DUINKER, P DURAN, I DUTTA, S EASO, S EFREMENKO, Y ELMAMOUNI, H ENGLER, A EPPLING, FJ ERNE, FC ERNENWEIN, JP EXTERMANN, P FABBRETTI, R FABRE, M FACCINI, R FALCIANO, S FAVARA, A FAY, J FELCINI, M FERGUSON, T FERNANDEZ, D FERNANDEZ, G FERRONI, F FESEFELDT, H FIANDRINI, E FIELD, JH FILTHAUT, F FISHER, PH FORCONI, G FREDJ, L FREUDENREICH, K GAILLOUD, M GALAKTIONOV, Y GANGULI, SN GARCIAABIA, P GAU, SS GENTILE, S GERALD, J GHEORDANESCU, N GIAGU, S GOLDFARB, S GOLDSTEIN, J GONG, ZF GONZALEZ, E GOUGAS, A GOUJON, D GRATTA, G GRUENEWALD, MW GU, C GUANZIROLI, M GUPTA, VK GURTU, A GUSTAFSON, HR GUTAY, LJ HARTMANN, B HASAN, A HE, JT HEBBEKER, T HERVE, A HILGERS, K VANHOEK, WC HOFER, H HOORANI, H HOU, SR HU, G ILYAS, MM INNOCENTE, V JANSSEN, H JIN, BN JONES, LW DEJONG, P JOSAMUTUBERRIA, I KASSER, A KHAN, RA KAMYSHKOV, Y KAPINOS, P KAPUSTINSKY, JS KARYOTAKIS, Y KAUR, M KHOKHAR, S KIENZLEFOCACCI, MN KIM, D KIM, JK KIM, SC KIM, YG KINNISON, WW KIRKBY, A KIRKBY, D KIRKBY, J KIRSCH, S KITTEL, W KLIMENTOV, A KONIG, AC KOFFEMAN, E KORNADT, O KOUTSENKO, V KOULBARDIS, A KRAEMER, RW KRAMER, T KRENZ, W KUIJTEN, H KUNIN, A DEGUEVARA, PL LANDI, G LAPOINT, C LASSILAPERINI, K LAURIKAINEN, P LEBEAU, M LEBEDEV, A LEBRUN, P LECOMTE, P LECOQ, J LECOQ, P LECOULTRE, P LEE, JS LEE, KY LEGGETT, C LEGOFF, JM LEISTE, R LENTI, M LEONARDI, E LEVTCHENKO, P LI, C LIEB, E LIN, WT LINDE, FL LINDEMANN, B LISTE, L LIU, Y LIU, ZA LOHMANN, W LONGO, E LU, W LU, YS LUBELSMEYER, K LUCI, C LUCKEY, D LUDOVICI, L LUMINARI, L LUSTERMANN, W MA, WG MACCHIOLO, A MAITY, M MALGERI, L MALIK, R MALININ, A MANA, C MANGLA, S MAOLINBAY, M MARCHESINI, P MARIN, A MARTIN, JP MARZANO, F MASSARO, GGG MAZUMDAR, K MCNALLY, D MELE, S MERK, M MEROLA, L MESCHINI, M METZGER, WJ MI, Y MIHUL, A VANMIL, AJW MIR, Y MIRABELLI, G MNICH, J MOLLER, M MONACO, V MONTELEONI, B MOORE, R MORAND, R MORGANTI, S MOULAI, NE MOUNT, R MULLER, S NAGY, E NAHN, S NAPOLITANO, M NESSITEDALDI, F NEWMAN, H NIAZ, MA NIPPE, A NOWAK, H ORGANTINI, G OSTONEN, R PANDOULAS, D PAOLETTI, S PAOLUCCI, P PASCALE, G PASSALEVA, G PATRICELLI, S PAUL, T PAULUZZI, M PAUS, C PAUSS, F PEI, YJ PENSOTTI, S PERRETGALLIX, D PEVSNER, A PICCOLO, D PIERI, M PINTO, JC PIROUE, PA PISTOLESI, E PLYASKIN, V POHL, M POJIDAEV, V POSTEMA, H PRODUIT, N QURESHI, KN RAGHAVAN, R RAHALCALLOT, G RANCOITA, PG RATTAGGI, M RAVEN, G RAZIS, P READ, K REDAELLI, M REN, D REN, Z RESCIGNO, M REUCROFT, S RICKER, A RIEMANN, S RIEMERS, BC RILES, K RIND, O RIZVI, HA RO, S ROBOHM, A RODIN, J RODRIGUEZ, FJ ROE, BP ROHNER, M ROHNER, S ROMERO, L ROSIERLEES, S ROSSELET, P VANROSSUM, W ROTH, S RUBIO, JA RYKACZEWSKI, H SALICIO, J SALICIO, JM SANCHEZ, E SANTOCCHIA, A SARAKINOS, ME SARKAR, S SARTORELLI, G SASSOWSKY, M SAUVAGE, G SCHAFER, C SCHEGELSKY, V SCHMITZ, D SCHMITZ, P SCHNEEGANS, M SCHOENEICH, B SCHOLZ, N SCHOPPER, H SCHOTANUS, DJ SCHULTE, R SCHULTZE, K SCHWENKE, J SCHWERING, G SCIACCA, C SEHGAL, R SEILER, PG SENS, JC SERVOLI, L SHEVCHENKO, S SHIVAROV, N SHOUTKO, V SHUKLA, J SHUMILOV, E SON, D SOPCZAK, A SOULIMOV, V SMITH, B SPICKERMANN, T SPILLANTINI, P STEUER, M STICKLAND, DP STICOZZI, F STONE, H STOYANOV, B STRAUCH, K SUDHAKAR, K SULTANOV, G SUN, LZ SUSINNO, GF SUTER, H SWAIN, JD SYED, AA TANG, XW TAYLOR, L TIMELLINI, R TING, SCC TING, SM TOKER, O TONUTTI, M TONWAR, SC TOTH, J TSAREGORODTSEV, A TSIPOLITIS, G TULLY, C TUCHSCHERER, H ULBRICHT, J URBAN, L UWER, U VALENTE, E VANDEWALLE, RT VETLITSKY, I VIERTEL, G VIKAS, P VIKAS, U VIVARGENT, M VOELKERT, R VOGEL, H VOGT, H VOROBIEV, I VOROBYOV, AA VOROBYOV, AA VUILLEUMIER, L WADHWA, M WALLRAFF, W WANG, JC WANG, XL WANG, YF WANG, ZM WEBER, A WEILL, R WILLMOTT, C WITTGENSTEIN, F WU, SX WYNHOFF, S XU, J XU, ZZ YANG, BZ YANG, CG YANG, G YAO, XY YE, CH YE, JB YE, Q YEH, SC YOU, JM YUNUS, N YZERMAN, M ZACCARDELLI, C ZALITE, A ZEMP, P ZENG, JY ZENG, M ZENG, Y ZHANG, Z ZHANG, ZP ZHOU, B ZHOU, GJ ZHOU, JF ZHOU, Y ZHU, GY ZHU, RY ZICHICHI, A VANDERZWAAN, BCC TI ONE-PRONG TAU-DECAYS WITH NEUTRAL KAONS SO PHYSICS LETTERS B LA English DT Article ID MONTE-CARLO; CONSTRUCTION; PERFORMANCE; CALORIMETER; LEPTON AB We have analyzed one-prong tau decays with neutral kaons using the information from a fine-grained hadron calorimeter. The data sample consists of 43 500 Z --> tau(+) tau(-) (gamma) events collected by the L3 detector at LEP in 1991, 1992 and 1993. The following branching fractions are measured: Beta(tau(-) --> upsilon(tau)pi(-)($) over bar K-0) = 0.0095 +/- 0.0015(stat) +/- 0.0006(syst); Beta(tau(-) --> nu(tau)pi(-)pi(0) ($) over bar K-0) = 0.0041 +/- 0.0012(stat) +/- 0.0003(syst) and Beta(tau(-) -->nu(tau)pi(-)($) over bar K-0 ($) over bar K-0) = 0.0031 +/- 0.0012(stat) +/- 0.0004( syst). C1 RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY. NIKHEF H, 1009 DB AMSTERDAM, NETHERLANDS. UNIV MICHIGAN, ANN ARBOR, MI 48109 USA. LAB ANNECY LE VIEUX PHYS PARTICULES, CNRS, IN2P3, F-74941 ANNECY LE VIEUX, FRANCE. JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA. INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA. HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY. IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY. TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA. BOSTON UNIV, BOSTON, MA 02215 USA. NORTHEASTERN UNIV, BOSTON, MA 02215 USA. INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA. UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA. HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY. HARVARD UNIV, CAMBRIDGE, MA 02139 USA. MIT, CAMBRIDGE, MA 02139 USA. IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY. UNIV FLORENCE, I-50125 FLORENCE, ITALY. CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND. WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND. UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND. UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA. SEFT, HIGH ENERGY PHYS RES INST, SF-00014 HELSINKI, FINLAND. UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND. LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA. UNIV LYON 1, INST PHYS NUCL LYON, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE. CIEMAT, E-28040 MADRID, SPAIN. INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA. IST NAZL FIS NUCL, I-80125 NAPLES, ITALY. UNIV NAPLES, I-80125 NAPLES, ITALY. UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS. CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS. NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. CALTECH, PASADENA, CA 91125 USA. IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY. UNIV PERUGIA, I-06100 PERUGIA, ITALY. CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA. PRINCETON UNIV, PRINCETON, NJ 08544 USA. IST NAZL FIS NUCL, I-00185 ROME, ITALY. UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY. INST PHYS NUCL LYON, ST PETERSBURG, RUSSIA. UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92093 USA. UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN. BULGARIAN ACAD SCI, 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. PURDUE UNIV, W LAFAYETTE, IN 47907 USA. PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. DESY, INST HOCHENERGIEPHYS, D-15738 ZEUTHEN, GERMANY. ETH ZURICH, CH-8093 ZURICH, SWITZERLAND. UNIV HAMBURG, D-22761 HAMBURG, GERMANY. RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY. RP ACCIARRI, M (reprint author), IST NAZL FIS NUCL, I-20133 MILAN, ITALY. RI Gonzalez Romero, Enrique/L-7561-2014; Vogel, Helmut/N-8882-2014; Fiandrini, Emanuele/C-4549-2008; Ludovici, Lucio/F-5917-2011; Kirkby, Jasper/A-4973-2012; Servoli, Leonello/E-6766-2012; alpat, ali behcet/G-6290-2013; bertucci, bruna/J-5237-2012; Cavallo, Nicola/F-8913-2012; Cerrada, Marcos/J-6934-2014; de la Cruz, Begona/K-7552-2014; Josa, Isabel/K-5184-2014; Ferguson, Thomas/O-3444-2014; Berdugo, Javier/A-2858-2015; van der Zwaan, Bob/F-4070-2015; D'Alessandro, Raffaello/F-5897-2015; Sanchez, Eusebio/H-5228-2015; Duran, Ignacio/H-7254-2015; rodriguez calonge, francisco javier/H-9682-2015; Rancoita, Pier Giorgio/J-9896-2015; Hoorani, Hafeez/D-1791-2013; Roth, Stefan/J-2757-2016 OI Filthaut, Frank/0000-0003-3338-2247; Goldstein, Joel/0000-0003-1591-6014; Gonzalez Romero, Enrique/0000-0003-2376-8920; Vogel, Helmut/0000-0002-6109-3023; Ludovici, Lucio/0000-0003-1970-9960; Kirkby, Jasper/0000-0003-2341-9069; Servoli, Leonello/0000-0003-1725-9185; alpat, ali behcet/0000-0002-0116-1506; Cerrada, Marcos/0000-0003-0112-1691; Ferguson, Thomas/0000-0001-5822-3731; Berdugo, Javier/0000-0002-7911-8532; van der Zwaan, Bob/0000-0001-5871-7643; D'Alessandro, Raffaello/0000-0001-7997-0306; Sanchez, Eusebio/0000-0002-9646-8198; Rancoita, Pier Giorgio/0000-0002-1990-4283; Roth, Stefan/0000-0003-3616-2223 NR 23 TC 17 Z9 17 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD JUN 15 PY 1995 VL 352 IS 3-4 BP 487 EP 497 DI 10.1016/0370-2693(95)00509-J PG 11 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RF366 UT WOS:A1995RF36600045 ER PT J AU SHANMUGHAM, S MORE, KL STINTON, DP HUBBARD, CR CAVIN, OB PORTER, WD HENSON, TJ LIMAYE, SY AF SHANMUGHAM, S MORE, KL STINTON, DP HUBBARD, CR CAVIN, OB PORTER, WD HENSON, TJ LIMAYE, SY TI POWDER SYNTHESIS, SINTERING, AND CHARACTERIZATION OF BA1+XZR4P6-2XSI2XO24 - A LOW THERMAL-EXPANSION SYSTEM SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID FAMILY; CTP C1 LOTEC INC,W VALLEY CITY,UT 84119. RP SHANMUGHAM, S (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN 37831, USA. RI More, Karren/A-8097-2016 OI More, Karren/0000-0001-5223-9097 NR 10 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD JUN 15 PY 1995 VL 32 IS 12 BP 1967 EP 1972 DI 10.1016/0956-716X(95)00041-S PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RD930 UT WOS:A1995RD93000011 ER PT J AU WANG, JN NIEH, TG AF WANG, JN NIEH, TG TI A NOTE ON CREEP IN A SINGLE-CRYSTAL, NI- BASED SUPERALLOY SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article RP WANG, JN (reprint author), LAWRENCE LIVERMORE NATL LAB,L-370,POB 808,LIVERMORE,CA 94550, USA. RI Nieh, Tai-Gang/G-5912-2011 OI Nieh, Tai-Gang/0000-0002-2814-3746 NR 19 TC 8 Z9 8 U1 1 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD JUN 15 PY 1995 VL 32 IS 12 BP 1973 EP 1976 DI 10.1016/0956-716X(95)00047-Y PG 4 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RD930 UT WOS:A1995RD93000012 ER PT J AU SMITH, PP BUCHANAN, RA WILLIAMS, JM AF SMITH, PP BUCHANAN, RA WILLIAMS, JM TI CHARACTERIZATION OF BLISTER FORMATION AND PITTING OF TUNGSTEN ION-IMPLANTED ALUMINUM SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID CORROSION BEHAVIOR; PASSIVITY; ALLOYS C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP SMITH, PP (reprint author), UNIV TENNESSEE,KNOXVILLE,TN 37996, USA. NR 10 TC 3 Z9 3 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD JUN 15 PY 1995 VL 32 IS 12 BP 2015 EP 2020 DI 10.1016/0956-716X(95)00052-W PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RD930 UT WOS:A1995RD93000018 ER PT J AU SMITH, PP BUCHANAN, RA WILLIAMS, JM AF SMITH, PP BUCHANAN, RA WILLIAMS, JM TI TUNGSTEN ION-IMPLANTATION OF ALUMINUM FOR IMPROVED RESISTANCE TO PITTING CORROSION - ELECTROCHEMICAL TESTING RESULTS SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID AL-W ALLOYS; BEHAVIOR; PASSIVITY; FILMS; CR C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP SMITH, PP (reprint author), UNIV TENNESSEE,KNOXVILLE,TN 37996, USA. NR 14 TC 4 Z9 5 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD JUN 15 PY 1995 VL 32 IS 12 BP 2021 EP 2027 DI 10.1016/0956-716X(95)00053-X PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RD930 UT WOS:A1995RD93000019 ER PT J AU PERRY, WL JAIN, A KODAS, TT HAMPDENSMITH, MJ AF PERRY, WL JAIN, A KODAS, TT HAMPDENSMITH, MJ TI SELECTIVE CHEMICAL-VAPOR-DEPOSITION ON EXCIMER-LASER-PATTERNED POLYTETRAFLUOROETHYLENE FROM HEXAFLUOROACETYLACETONATE COPPER(I) VINYLTRIMETHYLSILANE SO THIN SOLID FILMS LA English DT Article DE CHEMICAL VAPOR DEPOSITION; COPPER; DEPOSITION PROCESS; POLYMERS ID POLY(TETRAFLUOROETHYLENE); ADHESION AB A new process has been developed to produce patterned copper films with small feature sizes on polytetrafluoroethylene (PTFE). In the first step a sodium naphthalenide etching solution was used to chemically modify PTFE and also create a rough surface which provided good adhesion characteristics. In the second step a KrF excimer laser irradiated the substrate through a mask, ablating the etched layer and leaving a pattern. The typical total absorbed laser energy required to ablate the etched layer was 575 mJ cm(-2) and X-ray photoelectron spectroscopy (XPS) analysis showed that the ablated region had a composition similar to that of unmodified PTFE. In the third step, high purity copper was deposited selectively on the unablated regions in a cold wall reactor using (hfac)Cu(VTMS) (hfac = hexafluoroacetylacetonate; VTMS = vinyltrimethylsilane) at deposition rates up to 1 mu m min(-1) at 180 degrees C and 10 mTorr partial pressure of (hfac)Cu(VTMS) to give films 15-20 mu m thick of high purity copper on PTFE. Film resistivities were near bulk values. There are several advantages to this procedure compared with conventional approaches: (1) wet etching and liquid wastes are avoided; (2) conducting paths with dimensions less than 20 mu m can be produced; (3) excellent adhesion is obtained; (4) owing to the high energy density available from an excimer laser, rapid throughput is possible. C1 UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545. UNIV NEW MEXICO,DEPT CHEM & NUCL ENGN,ALBUQUERQUE,NM 87131. NR 14 TC 1 Z9 1 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD JUN 15 PY 1995 VL 262 IS 1-2 BP 7 EP 11 DI 10.1016/0040-6090(94)05802-4 PG 5 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA RJ842 UT WOS:A1995RJ84200003 ER PT J AU NORMAN, JAT ROBERTS, DA HOCHBERG, AK SMITH, P PETERSEN, GA PARMETER, JE APBLETT, CA OMSTEAD, TR AF NORMAN, JAT ROBERTS, DA HOCHBERG, AK SMITH, P PETERSEN, GA PARMETER, JE APBLETT, CA OMSTEAD, TR TI CHEMICAL ADDITIVES FOR IMPROVED COPPER CHEMICAL-VAPOR-DEPOSITION PROCESSING SO THIN SOLID FILMS LA English DT Article DE CHEMICAL VAPOR DEPOSITION; COPPER; GROWTH MECHANISM; METALLIZATION ID THIN-FILM GROWTH AB Techniques for improved copper chemical vapour deposition (CVD) processing by the addition of trimethylvinylsilane (tmvs) and hexafluoroacetylacetone (Hhfac) during copper deposition from the volatile liquid precursor Cu(hfac)(tmvs) are described. The tmvs enables stable high vaporization rates of precursor by direct liquid injection and the Hhfac permits higher deposition rates of smoother copper films. The resistivity of the copper films averages approximately 1.8 mu Omega cm as deposited. Combined together, these results mark an important advance toward a manufacturable copper CVD process. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. CVC PROD INC,ROCHESTER,NY 14603. RP NORMAN, JAT (reprint author), SCHUMACHER,1969 PALOMAR OAKS WAY,CARLSBAD,CA 92009, USA. NR 15 TC 60 Z9 61 U1 1 U2 6 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD JUN 15 PY 1995 VL 262 IS 1-2 BP 46 EP 51 DI 10.1016/0040-6090(94)05808-3 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA RJ842 UT WOS:A1995RJ84200008 ER PT J AU RYE, RR HOWARD, AJ RICCO, AJ AF RYE, RR HOWARD, AJ RICCO, AJ TI PHOTOLITHOGRAPHIC METALLIZATION OF FLUORINATED POLYMERS SO THIN SOLID FILMS LA English DT Article DE COPPER; INSULATORS; POLYMERS ID NAPHTHALENIDE TREATED FLUOROPOLYMERS; CU-TEFLON ADHESION; POLY(TETRAFLUOROETHYLENE); POLYTETRAFLUOROETHYLENE; RADIATION; DEPOSITION; COMPLEXES; COPPER AB Electroless or chemical vapor deposition of copper onto commercial samples of skived poly(tetrafluoroethylene) (PTFE) that have been chemically etched with sodium naphthalenide results in Cu films sufficiently adherent that attempts to remove the Cu cause near-cohesive failure in the PTFE. Such strong Cu adhesion forms the basis for several approaches to the production of high-resolution PTFE-based printed-circuit boards. Similarly strong adhesion does not occur to melt-processed fluorocarbon polymers (Teflon-AF, FEP, Teflon-PFA, etc.) nor to samples of PTFE annealed by hot pressing or mechanical polishing, nor to radiation-crosslinked PTFE. Adhesion to etched, skived PTFE is dominated by mechanical interlocking due to penetration of Cu into the highly-crazed, porous surface produced by etching of the stressed surface caused by skiving. Patterned irradiation (electrons, X-rays, etc.) at low dose levels results in crosslinking of virgin PTFE, preventing appreciable chemical etching and subsequent metal adhesion in the irradiated areas, and resulting in a three-step process (irradiation, chemical etching, and metal deposition) with a non-optimized lateral resolution of 35 mu m. Optical power absorption by an etched PTFE layer is a factor of 300 greater than for underlying (virgin) PTFE, allowing a second three-step approach to patterned metallization: chemical etching, patterned excimer-laser ablation, and metal deposition. A third approach combines chemical etching and uniform thin-metal-film deposition with standard photolithographic processing techniques, resulting in a patterned metallization process where adhesion is controlled by the initial etching step and resolution is controlled by standard lithographic technology. A non-optimized feature resolution of 17 mu m for 4-mu m thick Au conductors has been demonstrated with this technique. RP RYE, RR (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. RI Ricco, Antonio/A-5273-2010; OI Ricco, Antonio/0000-0002-2355-4984 NR 34 TC 13 Z9 13 U1 0 U2 6 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD JUN 15 PY 1995 VL 262 IS 1-2 BP 73 EP 83 DI 10.1016/0040-6090(95)05831-1 PG 11 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA RJ842 UT WOS:A1995RJ84200012 ER PT J AU REID, JS LIU, RY SMITH, PM RUIZ, RP NICOLET, MA AF REID, JS LIU, RY SMITH, PM RUIZ, RP NICOLET, MA TI W-B-N DIFFUSION-BARRIERS FOR SI/CU METALLIZATIONS SO THIN SOLID FILMS LA English DT Article DE AMORPHOUS MATERIAL; CONTACTS; COPPER; DIFFUSION ID CU; STABILITY; TANTALUM; SILICON; SI; PERFORMANCE; COPPER; TA AB Reactively sputtered from a W2B target, amorphous W-B-N thin films are investigated. The physical properties of the films, namely density, resistivity, crystallization behavior and reaction temperature with silicon, are given as functions of composition. Additionally, the films are assessed as diffusion barriers between silicon substrates and copper overlays. By I(V) measurements of shallow-junction diodes, a 100 nm W64B20N16 barrier prevents copper from reaching the silicon during an 800 degrees C, 30 min heat treatment in vacuum. W79B21 films are able to prevent diffusion into the diodes only up to 500 degrees C. High resolution transmission electron microscopy shows that W64B20N16 and W79B21 films are both marginally amorphous with local ordering of less than 1.5 nm. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. CALTECH,JET PROP LAB,PASADENA,CA 91109. RP REID, JS (reprint author), CALTECH,PASADENA,CA 91125, USA. NR 28 TC 37 Z9 41 U1 3 U2 5 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD JUN 15 PY 1995 VL 262 IS 1-2 BP 218 EP 223 DI 10.1016/0040-6090(94)05810-5 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA RJ842 UT WOS:A1995RJ84200027 ER PT J AU CHEN, JB YOUNG, VG ANGELICI, RJ AF CHEN, JB YOUNG, VG ANGELICI, RJ TI IRIDATHIABENZENE, A NOVEL ETA(6) HETEROAROMATIC PI-LIGAND SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note ID COMPLEXES; COORDINATION C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 11 TC 15 Z9 15 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD JUN 14 PY 1995 VL 117 IS 23 BP 6362 EP 6363 DI 10.1021/ja00128a028 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA RD284 UT WOS:A1995RD28400028 ER PT J AU CHOW, WW CHOQUETTE, KD GOURLEY, PL AF CHOW, WW CHOQUETTE, KD GOURLEY, PL TI EFFECTS OF QUANTUM-WELL SUBBAND STRUCTURE ON THE TEMPERATURE STABILITY OF VERTICAL-CAVITY SEMICONDUCTOR-LASERS SO APPLIED PHYSICS LETTERS LA English DT Article ID SURFACE-EMITTING LASERS; GAIN; PERFORMANCE RP CHOW, WW (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 15 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 12 PY 1995 VL 66 IS 24 BP 3266 EP 3268 DI 10.1063/1.113399 PG 3 WC Physics, Applied SC Physics GA RC259 UT WOS:A1995RC25900010 ER PT J AU ZHAO, D CHEN, T WANG, L AF ZHAO, D CHEN, T WANG, L TI OBSERVATION OF ELECTRONIC CORRELATION EFFECT IN C-60 ADSORBED ON AN (0001) SURFACE OF 2H-MOS2 BY SCANNING-TUNNELING-MICROSCOPY SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULES; IMAGES; FILMS; MOS2; C60 C1 HONG KONG UNIV SCI & TECHNOL,DEPT PHYS,KOWLOON,HONG KONG. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP ZHAO, D (reprint author), UNIV TORONTO,DEPT CHEM,TORONTO,ON M5S 1A1,CANADA. NR 19 TC 5 Z9 5 U1 2 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 12 PY 1995 VL 66 IS 24 BP 3292 EP 3294 DI 10.1063/1.113734 PG 3 WC Physics, Applied SC Physics GA RC259 UT WOS:A1995RC25900019 ER PT J AU XU, M FINNEMORE, DK BALACHANDRAN, U HALDAR, P AF XU, M FINNEMORE, DK BALACHANDRAN, U HALDAR, P TI STABILITY OF PB DOPED BI2SR2CA1CU2O8+DELTA AND THE GROWTH OF BI2SR2CA2CU3O10+DELTA SO APPLIED PHYSICS LETTERS LA English DT Article ID CU-O WIRES; TAPES; PHASE C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. ARGONNE NATL LAB,DIV ENERGY TECHNOL,ARGONNE,IL 60439. INTERMAGNET GEN CORP,LATHAM,NY 12110. RP XU, M (reprint author), US DOE,AMES LAB,AMES,IA 50011, USA. NR 13 TC 25 Z9 25 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 12 PY 1995 VL 66 IS 24 BP 3359 EP 3361 DI 10.1063/1.113757 PG 3 WC Physics, Applied SC Physics GA RC259 UT WOS:A1995RC25900042 ER PT J AU MEYER, J BONCHE, P WEISS, MS DOBACZEWSKI, J FLOCARD, H HEENEN, PH AF MEYER, J BONCHE, P WEISS, MS DOBACZEWSKI, J FLOCARD, H HEENEN, PH TI QUADRUPOLE AND OCTUPOLE CORRELATIONS IN NORMAL, SUPERDEFORMED AND HYPERDEFORMED STATES OF PB-194 SO NUCLEAR PHYSICS A LA English DT Article ID GENERATOR-COORDINATE METHOD; SHAPE ISOMERISM; NUCLEI; DEFORMATION; FORCES; SPIN; BAND; SYMMETRIES; ISOTOPES AB Quadrupole and octupole correlations in Pb-194 are investigated by means of the generator coordinate method, Static microscopic wave functions are obtained by constrained Hartree-Fock+BCS calculations using the effective interaction SkM*. Quadrupole deformations from ground state to hyperdeformation region are included. Superdeformed band heads of both parities are predicted. The depopulation of the even superdeformed band is calculated. The odd-parity superdeformed band slowly decays to the ground even-parity superdeformed band over many E1 transitions. C1 LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94550. UNIV WARSAW,INST THEORET PHYS,PL-00681 WARSAW,POLAND. INST PHYS NUCL LYON,DIV PHYS THEOR,F-91406 ORSAY,FRANCE. FREE UNIV BRUSSELS,SERV PHYS NUCL THEOR,B-1050 BRUSSELS,BELGIUM. CE SACLAY,F-91191 GIF SUR YVETTE,FRANCE. RP MEYER, J (reprint author), UNIV LYON 1,INST NUCL PHYS,IN1P3,CNRS,43 BD 111118,F-69622 VILLEURBANNE,FRANCE. NR 61 TC 53 Z9 53 U1 0 U2 2 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 JUN 12 PY 1995 VL 588 IS 3 BP 597 EP 622 DI 10.1016/0375-9474(95)00055-6 PG 26 WC Physics, Nuclear SC Physics GA RD858 UT WOS:A1995RD85800002 ER PT J AU BULTEN, HJ ANTHONY, PL ARNOLD, RG ARRINGTON, J BEISE, EJ BELZ, E VANBIBBER, K BOSTED, PE VANDENBRAND, JFJ CHAPMAN, MS COULTER, KP DIETRICH, FS ENT, R EPSTEIN, M FILIPPONE, BW GAO, H GEARHART, RA GEESAMAN, DF HANSEN, JO HOLT, RJ JACKSON, HE JONES, CE KEPPEL, CE KINNEY, E KUHN, SE LEE, K LORENZON, W LUNG, A MAKINS, NCR MARGAZIOTIS, DJ MCKEOWN, RD MILNER, RG MUELLER, B NAPOLITANO, J NELSON, J ONEILL, TG PAPAVASSILIOU, V PETRATOS, GG POTTERVELD, DH ROCK, SE SPENGOS, M SZALATA, ZM TAO, LH WHITE, JL ZEIDMAN, B AF BULTEN, HJ ANTHONY, PL ARNOLD, RG ARRINGTON, J BEISE, EJ BELZ, E VANBIBBER, K BOSTED, PE VANDENBRAND, JFJ CHAPMAN, MS COULTER, KP DIETRICH, FS ENT, R EPSTEIN, M FILIPPONE, BW GAO, H GEARHART, RA GEESAMAN, DF HANSEN, JO HOLT, RJ JACKSON, HE JONES, CE KEPPEL, CE KINNEY, E KUHN, SE LEE, K LORENZON, W LUNG, A MAKINS, NCR MARGAZIOTIS, DJ MCKEOWN, RD MILNER, RG MUELLER, B NAPOLITANO, J NELSON, J ONEILL, TG PAPAVASSILIOU, V PETRATOS, GG POTTERVELD, DH ROCK, SE SPENGOS, M SZALATA, ZM TAO, LH WHITE, JL ZEIDMAN, B TI EXCLUSIVE ELECTRON-SCATTERING FROM DEUTERIUM AT HIGH MOMENTUM-TRANSFER SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUARK EXCHANGE C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. AMERICAN UNIV,WASHINGTON,DC 20016. CALTECH,WK KELLOGG RADIAT LAB,PASADENA,CA 91125. MIT,NUCL SCI LAB,CAMBRIDGE,MA 02139. ARGONNE NATL LAB,ARGONNE,IL 60439. CALTECH,LOS ANGELES,CA 90032. STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. UNIV COLORADO,BOULDER,CO 80309. STANFORD UNIV,STANFORD,CA 94305. RENSSELAER POLYTECH INST,TROY,NY 12180. RP BULTEN, HJ (reprint author), UNIV WISCONSIN,MADISON,WI 53706, USA. RI Gao, Haiyan/G-2589-2011; Arrington, John/D-1116-2012; Holt, Roy/E-5803-2011; Chapman, Michael/C-1929-2014 OI Arrington, John/0000-0002-0702-1328; Chapman, Michael/0000-0003-4424-0156 NR 19 TC 23 Z9 23 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 JUN 12 PY 1995 VL 74 IS 24 BP 4775 EP 4778 DI 10.1103/PhysRevLett.74.4775 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100004 ER PT J AU SHEEHY, B WALKER, B DIMAURO, LF AF SHEEHY, B WALKER, B DIMAURO, LF TI PHASE-CONTROL IN THE 2-COLOR PHOTODISSOCIATION OF HD+ SO PHYSICAL REVIEW LETTERS LA English DT Article ID INTENSE LASER FIELDS; MULTIPHOTON IONIZATION; E,F1-SIGMA-G+; INTERFERENCE; ABSORPTION; CONTINUUM; PHOTONS; PULSES; H-2 RP SHEEHY, B (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. RI Walker, Barry/F-8532-2011 NR 20 TC 200 Z9 202 U1 1 U2 10 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 12 PY 1995 VL 74 IS 24 BP 4799 EP 4802 DI 10.1103/PhysRevLett.74.4799 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100010 ER PT J AU OREL, AE KULANDER, KC RESCIGNO, TN AF OREL, AE KULANDER, KC RESCIGNO, TN TI EFFECTS OF OPEN INELASTIC CHANNELS IN THE RESONANT DISSOCIATIVE RECOMBINATION OF HEH+ SO PHYSICAL REVIEW LETTERS LA English DT Article ID CONFIGURATION INTERACTION; MOLECULAR ION; EXCITATION C1 LAWRENCE LIVERMORE NATL LAB, PHYS & SPACE TECHNOL DIRECTORATE, LIVERMORE, CA 94550 USA. RP OREL, AE (reprint author), UNIV CALIF DAVIS, DEPT APPL SCI, DAVIS, CA 95616 USA. NR 20 TC 34 Z9 34 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 12 PY 1995 VL 74 IS 24 BP 4807 EP 4810 DI 10.1103/PhysRevLett.74.4807 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100012 ER PT J AU DEISSLER, RJ BRAND, HR AF DEISSLER, RJ BRAND, HR TI INTERACTION OF BREATHING LOCALIZED SOLUTIONS FOR SUBCRITICAL BIFURCATIONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID WEAKLY INVERTED BIFURCATION; TRAVELING-WAVE CONVECTION; BINARY-FLUID CONVECTION; FLOW; TRANSITION; EQUATION; SYSTEMS; STATES; PULSES; ORIGIN C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. UNIV BAYREUTH,D-95440 BAYREUTH,GERMANY. NR 28 TC 44 Z9 44 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 12 PY 1995 VL 74 IS 24 BP 4847 EP 4850 DI 10.1103/PhysRevLett.74.4847 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100022 ER PT J AU DIMONTE, G FRERKING, CE SCHNEIDER, M AF DIMONTE, G FRERKING, CE SCHNEIDER, M TI RICHTMYER-MESHKOV INSTABILITY IN THE TURBULENT REGIME SO PHYSICAL REVIEW LETTERS LA English DT Article ID RAYLEIGH-TAYLOR INSTABILITY; NUMERICAL-SIMULATION; LASER RP DIMONTE, G (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551, USA. NR 28 TC 34 Z9 35 U1 4 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 12 PY 1995 VL 74 IS 24 BP 4855 EP 4858 DI 10.1103/PhysRevLett.74.4855 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100024 ER PT J AU BALES, GS CHRZAN, DC AF BALES, GS CHRZAN, DC TI TRANSITION FROM COMPACT TO FRACTAL ISLANDS DURING SUBMONOLAYER EPITAXIAL-GROWTH SO PHYSICAL REVIEW LETTERS LA English DT Article ID BY-LAYER GROWTH; REENTRANT RP BALES, GS (reprint author), SANDIA NATL LABS,DEPT COMPUTAT MAT SCI,LIVERMORE,CA 94551, USA. NR 16 TC 55 Z9 55 U1 2 U2 9 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 12 PY 1995 VL 74 IS 24 BP 4879 EP 4882 DI 10.1103/PhysRevLett.74.4879 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100030 ER PT J AU TAMURA, E VANEK, J FROBA, M WONG, J AF TAMURA, E VANEK, J FROBA, M WONG, J TI X-RAY-ABSORPTION NEAR-EDGE STRUCTURE IN METALS - RELATIVISTIC EFFECTS AND CORE-HOLE SCREENING SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRONIC-STRUCTURE; INCOMPLETE SHELL; OPTICAL-SPECTRA; 1ST PRINCIPLES; DICHROISM; AU; POTENTIALS; IMPURITIES; FE RP TAMURA, E (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94551, USA. RI Froba, Michael/B-2888-2010 NR 29 TC 30 Z9 30 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 JUN 12 PY 1995 VL 74 IS 24 BP 4899 EP 4902 DI 10.1103/PhysRevLett.74.4899 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100035 ER PT J AU KRISCH, MH KAO, CC SETTE, F CALIEBE, WA HAMALAINEN, K HASTINGS, JB AF KRISCH, MH KAO, CC SETTE, F CALIEBE, WA HAMALAINEN, K HASTINGS, JB TI EVIDENCE FOR A QUADRUPOLAR EXCITATION CHANNEL AT THE L(III) EDGE OF GADOLINIUM BY RESONANT INELASTIC X-RAY-SCATTERING SO PHYSICAL REVIEW LETTERS LA English DT Article ID CIRCULAR-DICHROISM; ABSORPTION; METALS; GD; FE C1 BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. UNIV HELSINKI,DEPT PHYS,SF-00170 HELSINKI,FINLAND. RP KRISCH, MH (reprint author), EUROPEAN SYNCHROTRON RADIAT FACIL,F-38043 GRENOBLE,FRANCE. RI Hamalainen, Keijo/A-3986-2010 OI Hamalainen, Keijo/0000-0002-9234-9810 NR 16 TC 106 Z9 107 U1 1 U2 11 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 12 PY 1995 VL 74 IS 24 BP 4931 EP 4934 DI 10.1103/PhysRevLett.74.4931 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100043 ER PT J AU LANG, JC SRAJER, G DETLEFS, C GOLDMAN, AI KONIG, H WANG, XD HARMON, BN MCCALLUM, RW AF LANG, JC SRAJER, G DETLEFS, C GOLDMAN, AI KONIG, H WANG, XD HARMON, BN MCCALLUM, RW TI CONFIRMATION OF QUADRUPOLAR TRANSITIONS IN CIRCULAR MAGNETIC-X-RAY DICHROISM AT THE DYSPROSIUM L(III) EDGE SO PHYSICAL REVIEW LETTERS LA English DT Article ID ABSORPTION; SCATTERING; SPECTRA; METAL C1 US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT MAT SCI & ENGN,AMES,IA 50011. RP LANG, JC (reprint author), ARGONNE NATL LAB,ADV PHOTON SOURCE,ARGONNE,IL 60439, USA. RI Detlefs, Carsten/B-6244-2008 OI Detlefs, Carsten/0000-0003-2573-2286 NR 25 TC 69 Z9 69 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 JUN 12 PY 1995 VL 74 IS 24 BP 4935 EP 4938 DI 10.1103/PhysRevLett.74.4935 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100044 ER PT J AU RANDERIA, M DING, H CAMPUZANO, JC BELLMAN, A JENNINGS, G YOKOYA, T TAKAHASHI, T KATAYAMAYOSHIDA, H MOCHIKU, T KADOWAKI, K AF RANDERIA, M DING, H CAMPUZANO, JC BELLMAN, A JENNINGS, G YOKOYA, T TAKAHASHI, T KATAYAMAYOSHIDA, H MOCHIKU, T KADOWAKI, K TI MOMENTUM DISTRIBUTION SUM-RULE FOR ANGLE-RESOLVED PHOTOEMISSION SO PHYSICAL REVIEW LETTERS LA English DT Article ID SPECTRAL WEIGHT TRANSFER; CA-CU-O; SUPERCONDUCTING TRANSITION; FERMI-SURFACE; BI2SR2CACU2O8+DELTA; STATE; GAP C1 UNIV ILLINOIS,DEPT PHYS,CHICAGO,IL 60680. UNIV MILAN,DEPT PHYS,MILAN,ITALY. TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 980,JAPAN. NATL RES INST MET,TSUKUBA,IBARAKI 305,JAPAN. RP RANDERIA, M (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. RI Takahashi, Takashi/E-5080-2010; Tohoku, Arpes/A-4890-2010; Campuzano, Juan Carlos/G-4358-2012; YOKOYA, Takayoshi/B-1478-2011; OI Ding, Hong/0000-0003-4422-9248 NR 20 TC 133 Z9 134 U1 1 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 12 PY 1995 VL 74 IS 24 BP 4951 EP 4954 DI 10.1103/PhysRevLett.74.4951 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100048 ER PT J AU AMADOR, C HOYT, JJ CHAKOUMAKOS, BC DEFONTAINE, D AF AMADOR, C HOYT, JJ CHAKOUMAKOS, BC DEFONTAINE, D TI THEORETICAL AND EXPERIMENTAL-STUDY OF RELAXATIONS IN AL3TI AND AL3ZR ORDERED PHASES SO PHYSICAL REVIEW LETTERS LA English DT Article ID INTERMETALLIC COMPOUNDS; STABILITY; AL; 1ST-PRINCIPLES; ALLOYS; TI; SYSTEM; MODEL C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. RP AMADOR, C (reprint author), UNIV CALIF BERKELEY,DEPT MAT SCI,BERKELEY,CA 94720, USA. RI Amador-Bedolla, Carlos/E-7448-2010; Chakoumakos, Bryan/A-5601-2016 OI Amador-Bedolla, Carlos/0000-0001-9590-2645; Chakoumakos, Bryan/0000-0002-7870-6543 NR 16 TC 29 Z9 29 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 JUN 12 PY 1995 VL 74 IS 24 BP 4955 EP 4958 DI 10.1103/PhysRevLett.74.4955 PG 4 WC Physics, Multidisciplinary SC Physics GA RC191 UT WOS:A1995RC19100049 ER PT J AU HU, GZ KROMMES, JA BOWMAN, JC AF HU, GZ KROMMES, JA BOWMAN, JC TI RESISTIVE DRIFT-WAVE PLASMA TURBULENCE AND THE REALIZABLE MARKOVIAN CLOSURE SO PHYSICS LETTERS A LA English DT Article ID EDGE TURBULENCE; TRANSPORT; DYNAMICS AB The realizable Markovian closure (RMC) developed by Bowman et al. [Phys. Fluids B 5 (1993) 3558] is employed to study the Hasegawa-Wakatani model, a paradigm for resistive drift-wave turbulence. Turbulent transport, spectral properties, and energy-transfer directions are discussed. For second-order statistics, the closure predictions are in excellent agreement with direct numerical simulations. A marked depression of the hydrodynamic flux from its quasilinear value is well predicted by the RMC and is explained without reference to ''coherent structures''. C1 UNIV TEXAS,INST FUS STUDIES,AUSTIN,TX 78712. PRINCETON UNIV,PLASMA PHYS LAB,PRINCETON,NJ 08543. RP HU, GZ (reprint author), UNIV CALIF SANTA BARBARA,INST THEORET PHYS,SANTA BARBARA,CA 93106, USA. NR 33 TC 15 Z9 15 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD JUN 12 PY 1995 VL 202 IS 1 BP 117 EP 125 DI 10.1016/0375-9601(95)00281-7 PG 9 WC Physics, Multidisciplinary SC Physics GA RD531 UT WOS:A1995RD53100021 ER PT J AU HICKE, B REMPEL, R MALLER, J SWANK, RA HAMAGUCHI, JR BRADBURY, EM PRESCOTT, DM CECH, TR AF HICKE, B REMPEL, R MALLER, J SWANK, RA HAMAGUCHI, JR BRADBURY, EM PRESCOTT, DM CECH, TR TI PHOSPHORYLATION OF THE OXYTRICHA TELOMERE PROTEIN - POSSIBLE CELL-CYCLE REGULATION SO NUCLEIC ACIDS RESEARCH LA English DT Article ID G-QUARTET FORMATION; BINDING-PROTEIN; MACRONUCLEAR DNA; CHROMATIN STRUCTURE; BETA-SUBUNIT; INVIVO; YEAST; GENE; NOVA; TETRAHYMENA AB In the macronucleus of the ciliate Oxytricha nova, telomeres end with single-stranded (T(4)G(4))(2) DNA bound to a heterodimeric telomere protein (alpha beta) Both the alpha and beta subunits (alpha-TP and beta-TP) were phosphorylated in asynchronously growing Oxytricha; beta-TP was phosphorylated to a much higher degree, In vitro, mouse cyclin-dependent kinases (Cdks) phosphorylated beta-TP in a lysine-rich domain that is not required for specific DNA binding but is implicated in higher order structure formation of telomeres, Therefore, phosphorylation of beta-TP could modulate a function of the telomere protein that is separate from specific DNA binding. Phosphoamino acid analysis revealed that the mouse Cdks modify predominantly threonine residues in beta-TP, consistent with the observation that beta-TP contains two consensus Cdk recognition sequences containing threonine residues, In Xenopus egg extracts that undergo cell cycling, beta-TP was phosphorylated in M phase and dephosphorylated in interphase. This work provides the first direct evidence of phosphorylation at telomeres in any organism, as well as indirect evidence for cell cycle regulation of telomere phosphorylation. The Cdc2/cyclin A and Cdc2/cyclin B kinases are required for major mitotic events. An attractive model is that phosphorylation of beta-TP by these kinases is required for the breakdown of telomere associations with each other and/or with nuclear structures prior to nuclear division. C1 UNIV COLORADO,HOWARD HUGHES MED INST,DEPT MOLEC CELLULAR & DEV BIOL,BOULDER,CO 80309. UNIV COLORADO,HOWARD HUGHES MED INST,DEPT CHEM & BIOCHEM,BOULDER,CO 80309. UNIV COLORADO,SCH MED,HOWARD HUGHES MED INST,DENVER,CO 80262. UNIV COLORADO,SCH MED,DEPT PHARMACOL,DENVER,CO 80262. UNIV CALIF DAVIS,SCH MED,DEPT BIOL CHEM,DAVIS,CA 95616. LOS ALAMOS NATL LAB,DIV LIFE SCI,LOS ALAMOS,NM 87545. FU NIGMS NIH HHS [GM19199, GM28039, GM 45890-03] NR 56 TC 17 Z9 19 U1 1 U2 2 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JUN 11 PY 1995 VL 23 IS 11 BP 1887 EP 1893 DI 10.1093/nar/23.11.1887 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RE996 UT WOS:A1995RE99600008 PM 7596814 ER PT J AU DUNN, JJ BUTLERLOFFREDO, LL STUDIER, FW AF DUNN, JJ BUTLERLOFFREDO, LL STUDIER, FW TI LIGATION OF HEXAMERS ON HEXAMER TEMPLATES TO PRODUCE PRIMERS FOR CYCLE SEQUENCING OR THE POLYMERASE CHAIN-REACTION SO ANALYTICAL BIOCHEMISTRY LA English DT Article ID DNA; LIBRARY; WALKING; STRINGS AB A method is described for the ordered ligation of hexanucleotides (hexamers) in solution to produce unique longer oligonucleotides. To form an 18-mer, for example, six different hexamers are selected that can base pair unambiguously to form a double-stranded complex of indefinite length. In the most efficient arrangement, each hexamer forms three complementary base pairs with two other hexamers, generating complementary chains of contiguous hexamers with strand breaks staggered by three bases. Two adjacent hexamers in one chain contain 5' phosphate groups and the others are unphosphorylated. Both T4 and T7 DNA ligase can ligate the phosphorylated hexamers to their neighbors in such a complex at hexamer concentrations in the 50-100 mM range, producing an 18-mer and leaving three unphosphorylated hexamers. Twenty-nine of 34 complexes that satisfied the requirements for unambiguous ligation generated the desired 18-mers, which could be used directly for cycle sequencing or, after removal of the unreacted hexamers, for polymerase chain reactions (PCR). Comparable ligation reactions also produced 12-, 24-, and 30-mers. With a library of all 4096 possible hexamers, unambiguous ligation has the potential to produce more than 82% of ah possible 18-mers and could readily supply the oligonucleotides needed for DNA sequencing by primer walking, for PCR, or for gene synthesis. (C) 1995 Academic Press, Inc. RP DUNN, JJ (reprint author), BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973, USA. NR 20 TC 13 Z9 13 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0003-2697 J9 ANAL BIOCHEM JI Anal. Biochem. PD JUN 10 PY 1995 VL 228 IS 1 BP 91 EP 100 DI 10.1006/abio.1995.1319 PG 10 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA RE739 UT WOS:A1995RE73900012 PM 8572293 ER PT J AU MURRAY, JR AF MURRAY, JR TI BIOMEDICAL APPLICATIONS OF OPTICAL-TECHNOLOGY IN APPLIED OPTICS SO APPLIED OPTICS LA English DT Editorial Material RP MURRAY, JR (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUN 10 PY 1995 VL 34 IS 17 BP 3037 EP 3037 PG 1 WC Optics SC Optics GA RB633 UT WOS:A1995RB63300001 ER PT J AU SMITH, DJ ZHU, YW ZHANG, JL CHENG, JF RUBIN, EM AF SMITH, DJ ZHU, YW ZHANG, JL CHENG, JF RUBIN, EM TI CONSTRUCTION OF A PANEL OF TRANSGENIC MICE CONTAINING A CONTIGUOUS 2-MB SET OF YAC/P1 CLONES FROM HUMAN-CHROMOSOME 21Q22.2 SO GENOMICS LA English DT Article ID YEAST ARTIFICIAL CHROMOSOME; HUMAN CARBONYL REDUCTASE; GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE GENE; GERM-LINE TRANSMISSION; WEAVER MUTANT MICE; CEREBELLAR CORTEX; NEURONAL DIFFERENTIATION; MOUSE CHROMOSOME-16; COMPLETE SEQUENCE; DOWN-SYNDROME AB Libraries of the entire human genome, or regions of the genome, have been made in bacteria, yeast, and somatic cells. We have expanded this strategy using overlapping YACs and P1s from human 21q22.2 (the Down syndrome region) to create a panel of transgenic mice containing DNA that encompasses this region of the human genome. Together the members of the in vivo library, each with a unique transgene (four YACs and four P1s), contain approximately 2 Mb of contiguous DNA. The integrity, stable inheritance, and expression of a coding sequence for each member of the YAC panel are demonstrated, and the uses of the panel are described. (C) 1995 Academic Press, Inc. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR HUMAN GENOME,BERKELEY,CA 94720. FU NHLBI NIH HHS [PPG HL18574] NR 54 TC 71 Z9 73 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0888-7543 J9 GENOMICS JI Genomics PD JUN 10 PY 1995 VL 27 IS 3 BP 425 EP 434 DI 10.1006/geno.1995.1073 PG 10 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA RG981 UT WOS:A1995RG98100006 PM 7558023 ER PT J AU HOLDENER, BC THOMAS, JW SCHUMACHER, A POTTER, MD RINCHIK, EM SHARAN, SK MAGNUSON, T AF HOLDENER, BC THOMAS, JW SCHUMACHER, A POTTER, MD RINCHIK, EM SHARAN, SK MAGNUSON, T TI PHYSICAL LOCALIZATION OF EED - A REGION OF MOUSE CHROMOSOME-7 REQUIRED FOR GASTRULATION SO GENOMICS LA English DT Article ID ALBINO-DELETION COMPLEX; LOCUS REGION; EXTRAEMBRYONIC ECTODERM; LETHAL MUTATIONS; GENE MARKERS; CPG ISLANDS; LIBRARY; GENOME; DEFINE AB In the mouse, the embryonic ectoderm development (eed) region is defined by deletions encompassing the albino (c) locus of chromosome 7. The region is located 1-2 cM distal to the c locus and was of undetermined size. Embryos homozygous for deletions removing eed display defects in axial organization during gastrulation. Two loci, identified by chemical mutagenesis, are known to map within the eed interval. One, l7Rn5, probably represents the gene required for gastrulation. The second, l7Rn6, is required for survival after birth. fit1, a third locus identified by chemical mutagenesis, maps distal to the eed interval and is also required for survival after birth. A 900-kb YAC contig has been constructed, and deletion breakpoints defining the limits of the regions containing these loci have been localized, Their positions place the eed region within a maximum 150-kb interval at the proximal end of the contig, while fit1 maps to a 360-kb interval within the middle of the contig. Several clusters of rare-cutting restriction sites map within these regions and represent potential locations of candidate genes. (C) 1995 Academic Press, Inc. C1 CASE WESTERN RESERVE UNIV,DEPT GENET,CLEVELAND,OH 44106. UNIV TENNESSEE,GRAD SCH BIOMED SCI,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831. FU NICHD NIH HHS [HD-2446]; NIGMS NIH HHS [GM08056, GM2257] NR 26 TC 17 Z9 17 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0888-7543 J9 GENOMICS JI Genomics PD JUN 10 PY 1995 VL 27 IS 3 BP 447 EP 456 DI 10.1006/geno.1995.1076 PG 10 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA RG981 UT WOS:A1995RG98100009 PM 7558026 ER PT J AU WONG, H RADKE, CJ MORRIS, S AF WONG, H RADKE, CJ MORRIS, S TI THE MOTION OF LONG BUBBLES IN POLYGONAL CAPILLARIES .1. THIN-FILMS SO JOURNAL OF FLUID MECHANICS LA English DT Article ID MENISCI AB Foam in porous media exhibits an unusually high apparent viscosity, making it useful in many industrial processes. The rheology of foam, however, is complex and not well understood. Previous pore-level models of foam are based primarily on studies of bubble flow in circular capillaries. A circular capillary, however, lacks the corners that characterize the geometry of the pores. We study the pressure-velocity relation of bubble flow in polygonal capillaries. A long bubble in a polygonal capillary acts as a leaky piston. The 'piston' is reluctant to move because of a large drag exerted by the capillary sidewalls. The liquid in the capillary therefore bypasses the bubble through the leaky corners at a speed an order higher than that of the bubble. Consequently, the pressure work is dissipated predominantly by the motion of the fluid and not by the motion of the bubble. This is opposite to the conclusion based on bubble flow in circular capillaries. The discovery of this new flow regime reconciles two groups of contradictory foam-flow experiments. Part 1 of this work studies the fluid films deposited on capillary walls in the limit Ca-->0 (Ca = mu U/sigma, where mu is the fluid viscosity, U the bubble velocity, and sigma the surface tension). Part 2 (Wong et al. 1995) uses the film profile at the back end to calculate the drag of the bubble. Since the bubble length is arbitrary, the film profile is determined here as a general function of the dimensionless downstream distance x. For 1 much less than x much less than Ca-1, the film profile is frozen with a thickness of order Ca-2/3 at the centre and order Ca at the sides. For x similar to Ca-1, surface tension rearranges the film at the centre into a parabolic shape while the film at the sides thins to order Ca-4/3. For x much greater than Ca-1, the film is still parabolic, but the height decreases as film fluid leaks through the side constrictions. For x similar to Ca--5/3, the height of the parabola is order Ca-2/3. Finally, for x much greater than Ca--5/3, the height decreases as Ca(1/4)x(-1/4). C1 UNIV CALIF BERKELEY, DEPT MECH ENGN, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, DEPT CHEM ENGN, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV EARTH SCI, BERKELEY, CA 94720 USA. RI Wong, Harris/F-6097-2013 OI Wong, Harris/0000-0001-9402-6778 NR 26 TC 154 Z9 154 U1 2 U2 36 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD JUN 10 PY 1995 VL 292 BP 71 EP 94 DI 10.1017/S0022112095001443 PG 24 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RF328 UT WOS:A1995RF32800004 ER PT J AU WONG, H RADKE, CJ MORRIS, S AF WONG, H RADKE, CJ MORRIS, S TI THE MOTION OF LONG BUBBLES IN POLYGONAL CAPILLARIES .2. DRAG, FLUID PRESSURE AND FLUID-FLOW SO JOURNAL OF FLUID MECHANICS LA English DT Article AB This work determines the pressure-velocity relation of bubble flow in polygonal capillaries. The liquid pressure drop needed to drive a long bubble at a given velocity U is solved by an integral method. In this method, the pressure drop is shown to balance the drag of the bubble, which is determined by the films at the two ends of the bubble. Using the liquid-film results of Part 1 (Wong, Radke and Morris 1995), we find that the drag scales as Ca-2/3 in the limit Ca-->0 (Ca = mu U/sigma, where mu is the liquid viscosity and sigma the surface tension). Thus, the pressure drop also scales as Ca-2/3. The proportionality constant for six different polygonal capillaries is roughly the same and is about a third that for the circular capillary. The liquid in a polygonal capillary flows by pushing the bubble (plug flow) and by bypassing the bubble through corner channels (corner flow). The resistance to the plug flow comes mainly from the drag of the bubble. Thus, the plug flow obeys the nonlinear pressure-velocity relation of the bubble. Corner flow, however, is chiefly unidirectional because the bubble is long. The ratio of plug to corner flow varies with liquid flow rate Q (made dimensionless by sigma a(2)/mu, where alpha is the radius of the largest inscribed sphere). The two flows are equal at a critical flow rate Q(c), whose value depends strongly on capillary geometry and bubble length. For the six polygonal capillaries studied, Q(c) much less than 10(-6). For Q(c) much less than 1, the plug flow dominates, and the gradient in liquid pressure varies with Q(2/3). For Q much less than Q(c), the corner flow dominates, and the pressure gradient varies linearly with Q. A transition at such low flow rates is unexpected and partly explains the complex rheology of foam flow in porous media. C1 UNIV CALIF BERKELEY, DEPT MECH ENGN, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, DEPT CHEM ENGN, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV EARTH SCI, BERKELEY, CA 94720 USA. RI Wong, Harris/F-6097-2013 OI Wong, Harris/0000-0001-9402-6778 NR 11 TC 134 Z9 136 U1 1 U2 39 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD JUN 10 PY 1995 VL 292 BP 95 EP 110 DI 10.1017/S0022112095001455 PG 16 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RF328 UT WOS:A1995RF32800005 ER PT J AU MATHEZ, EA DUBA, AG PEACH, CL LEGER, A SHANKLAND, TJ PLAFKER, G AF MATHEZ, EA DUBA, AG PEACH, CL LEGER, A SHANKLAND, TJ PLAFKER, G TI ELECTRICAL-CONDUCTIVITY AND CARBON IN METAMORPHIC ROCKS OF THE YUKON-TANANA TERRANE, ALASKA SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH LA English DT Article ID GRAIN-BOUNDARY GRAPHITE; DENALI FAULT SYSTEM; CONTINENTAL-CRUST; REFLECTION; WATER; TEMPERATURES; BASALTS; MANTLE; MODELS; MATTER AB Electrical conductivity of a water-saturated quartz-mica-garnet-schist, collected from a surface outcrop near the Denali Fault Zone in the Yukon-Tanana terrane of east central Alaska, increases slightly with pressure to about 200 MPa, This behavior is unlike that exhibited by other Yukon-Tanana samples or by most rocks from other locations, Detailed petrographic examination of the sample revealed the presence of a stringer of carbonaceous material generally less than 10 mu m thick enclosed in and intergrown with one of the muscovite layers and extending for about 2 cm along the foliation, The stringer is probably responsible for the anomalous conductivity change with pressure, making the sample the first for which anomalous electrical conductivity behavior can be attributed to carbon associated with a specific feature, The carbonaceous stringer together with its host muscovite layer are deformed and broken around a rotated garnet porphyroclast, The deformation was accommodated by plastic deformation of quartz and therefore occurred in the ductile regime under conditions at least equivalent to greenschist facies metamorphism, We interpret the textural relations to indicate that the carbonaceous material was formed by fluid deposition in a fracture formed within the muscovite layer, possibly during the main phase of metamorphism and deformation, and that the mica and carbon stringer were then deformed by the noncoaxial deformation responsible for rotation of the garnet porphyroclasts. Together the facts that the deformation resulting in garnet rotation was ductile and that the garnet rotation disrupted the stringer demonstrate that the carbonaceous stringer was present at depth (i,e,, > 10 km). Brittle deformation on the microscopic scale is observed to have broken the connectivity of the carbon stringer, explaining in part why the rock does not exhibit anomalously high conductivity at 0.1 MPa (1 atm) pressure, The brittle deformation is interpreted to have been caused by unloading due to uplift. The observations indicate that carbonaceous material may exert a primary control on crustal electrical conductivity because it may be present as interconnected arrays in grain boundaries or microfractures or in megascopic, throughgoing fractures. C1 US GEOL SURVEY, MENLO PK, CA 94025 USA. LOS ALAMOS NATL LAB, DIV EARTH & ENVIRONM SCI, LOS ALAMOS, NM 87545 USA. LAWRENCE LIVERMORE NATL LAB, DEPT EARTH SCI, LIVERMORE, CA 94550 USA. RP MATHEZ, EA (reprint author), AMER MUSEUM NAT HIST, DEPT EARTH & PLANETARY SCI, CENT PK W & 79TH ST, NEW YORK, NY 10024 USA. NR 42 TC 29 Z9 29 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9313 EI 2169-9356 J9 J GEOPHYS RES-SOL EA JI J. Geophys. Res.-Solid Earth PD JUN 10 PY 1995 VL 100 IS B6 BP 10187 EP 10196 DI 10.1029/95JB00615 PG 10 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA RC486 UT WOS:A1995RC48600027 ER PT J AU STEEL, DG KIM, DH GRAY, KE PFANSTIEL, SE KANG, JH TALVACCHIO, J AF STEEL, DG KIM, DH GRAY, KE PFANSTIEL, SE KANG, JH TALVACCHIO, J TI ELECTRICAL-NOISE SIGNATURES OF POSSIBLE VORTEX TRANSITIONS IN EPITAXIAL YBA2CU3O7 THIN-FILMS SO PHYSICA C LA English DT Article ID GRAIN-BOUNDARY JUNCTIONS; UPPER CRITICAL-FIELD; SINGLE-CRYSTALS; 1/F NOISE; GLASS SUPERCONDUCTIVITY; FLUX NOISE; TC; TEMPERATURE; FLUCTUATIONS; PHASE AB Measurements of the electrical noise have been used to probe the vortex dynamics in epitaxial YBa2Cu3O7 thin films at magnetic fields up to 8 T, and they display two sharp features as a function of temperature. A sharp onset of noise occurring at T-on < T-c2(H) is a new feature. A separate noise peak shows striking correlation to hysteresis previously observed in single crystals and is interpreted as melting. The temperature of both features did not change over two decades in the applied current, indicating that they may be signatures of thermodynamic transitions within the vortex state. C1 ARGONNE NATL LAB,MAT SCI LAB,ARGONNE,IL 60439. WESTINGHOUSE SCI & TECHNOL CTR,PITTSBURGH,PA 15235. RP STEEL, DG (reprint author), ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439, USA. NR 27 TC 12 Z9 12 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JUN 10 PY 1995 VL 248 IS 1-2 BP 55 EP 60 DI 10.1016/0921-4534(95)00237-5 PG 6 WC Physics, Applied SC Physics GA RF370 UT WOS:A1995RF37000008 ER PT J AU YUAN, SL YANG, ZJ KADOWAKI, K AF YUAN, SL YANG, ZJ KADOWAKI, K TI FLUX DYNAMICS AND C-AXIS RESISTIVE DISSIPATION IN THE MIXED-STATE OF HIGH-TEMPERATURE SUPERCONDUCTORS - THE CASE OF (LA1-XSRX)(2)CUO4 SO PHYSICA C LA English DT Article ID HIGH-TC SUPERCONDUCTORS; MAGNETIC-FIELD; II SUPERCONDUCTOR; TRANSITION; TRANSPORT; MAGNETORESISTANCE; FLUCTUATIONS; MECHANISM; FILMS AB We take the single-crystalline (La1-xSrx)(2)CuO4 system (x = 0.068) as an example to study flux dynamics in the mixed state of high-T-c superconductors by systematically measuring its c-axis resistivity, rho(c), as a function of temperature, magnetic-field intensity and magnetic-field orientation with respect to the ab-plane. We firstly show the experimental evidence that excludes the contribution of Lorentz force driven flux motion to the c-axis resistive dissipation. Furthermore, we argue that neither the vortex dynamics for conventional anisotropic superconductors nor the two-dimensional pancake vortices model is appropriate for the present system. We then demonstrate the difficulty of the previously considered Lorentz force free dissipation models in explaining the present experimental observations. Finally, a phenomenological model is introduced, in which the phase slippage model developed by Ambegaokar and Halperin is extended to the case of the c-axis resistivity by taking into account the following two main features: (1) the intrinsic layered structures along the c-axis, and (2) the irreversibility line, T-irr(H), corresponding to a vortex glass-liquid transition. To show the advantages of the present model, we compare the model with the experimental rho(c)(T, H) data for H parallel to c, which gives excellent agreement in almost the whole transition region (five decades). C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NATL RES INST MET,TSUKUBA LABS,IBARAKI,OSAKA 305,JAPAN. RP YUAN, SL (reprint author), ASIPP,HIGH FIELD MAGNET LAB,POB 1126,HEFEI 230031,PEOPLES R CHINA. NR 27 TC 3 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JUN 10 PY 1995 VL 248 IS 1-2 BP 97 EP 107 DI 10.1016/0921-4534(95)00232-4 PG 11 WC Physics, Applied SC Physics GA RF370 UT WOS:A1995RF37000014 ER PT J AU BIAN, WM ZHU, YM WANG, YL SUENAGA, M AF BIAN, WM ZHU, YM WANG, YL SUENAGA, M TI THE INTERMEDIATE PHASE DURING (BI,PB)(2)SR2CACU2O8+DELTA TO (BI,PB)(2)SR2CA2CU3O10+DELTA PHASE-TRANSFORMATION SO PHYSICA C LA English DT Article ID BI(PB)-SR-CA-CU-O; MECHANISM; (BI AB We report our observations on and identification of an intermediate phase, (Bi,Pb)(4)Sr4Ca3Cu5O18 (+) (delta) (denoted as Bi/4435), during the phase transformation of (Bi,Pb)(2)Sr2CaCu2O8+delta (Bi/2212) to (Bi,Pb)(2)Sr2Ca2Cu3O10+delta (Bi/2223) in powder-in-tube processed tapes. The unit cell of the phase consists of one half each of the Bi/2212 and the Bi/2223 cell, with lattice parameters of a approximate to b = 5.4 Angstrom and c = 33.9 Angstrom. The space group of the new phase was determined to be Pbmn using the extinction rule of the selected-area electron diffraction, as well as convergent beam electron diffraction and high-resolution electron microscopy. The presence of the Bi/4435 phase and the abundance of its local structure during the early stage of the transformation suggests that the Bi/2223 phase is formed by the rapid insertion of two extra Ca/CuO bi-layers, one at a time, into the two identical CuO/Ca/CuO building blocks of the Bi/2212 matrix. This finding may shed light on the mechanism of structural phase transformation in layered cuprate superconductors. C1 BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973. NR 17 TC 51 Z9 51 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JUN 10 PY 1995 VL 248 IS 1-2 BP 119 EP 126 DI 10.1016/0921-4534(95)00240-5 PG 8 WC Physics, Applied SC Physics GA RF370 UT WOS:A1995RF37000016 ER PT J AU VINOKUR, VM KES, PH KOSHELEV, AE AF VINOKUR, VM KES, PH KOSHELEV, AE TI THE 2D COLLECTIVE CREEP EXPONENTS RECONSIDERED SO PHYSICA C LA English DT Article ID SUPERCONDUCTORS AB Taking into account the wave vector dependence of the compression modulus most relevant for the description of collective creep, we derive new exponents for the relation between energy barrier U and density of the driving current j in the case of a two-dimensional Vortex lattice. C1 LEIDEN UNIV,KAMERLINGH ONNES LAB,2300 RA LEIDEN,NETHERLANDS. RUSSIAN ACAD SCI,INST SOLID STATE PHYS,CHERNOGOLOVKA 142432,RUSSIA. RP VINOKUR, VM (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Koshelev, Alexei/K-3971-2013 OI Koshelev, Alexei/0000-0002-1167-5906 NR 9 TC 24 Z9 24 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JUN 10 PY 1995 VL 248 IS 1-2 BP 179 EP 184 DI 10.1016/0921-4534(95)00229-4 PG 6 WC Physics, Applied SC Physics GA RF370 UT WOS:A1995RF37000024 ER PT J AU DURBIN, TD LAPIANOSMITH, DA MCFEELY, FR HIMPSEL, FJ YARMOFF, JA AF DURBIN, TD LAPIANOSMITH, DA MCFEELY, FR HIMPSEL, FJ YARMOFF, JA TI THE CHEMISORPTION AND REACTION OF DICHLOROSILANE ON GE(100) AND GE(111) SURFACES SO SURFACE SCIENCE LA English DT Article DE CHEMICAL VAPOR DEPOSITION; CHEMISORPTION; GERMANIUM; GROWTH; LOW INDEX SINGLE CRYSTAL SURFACES; SEMICONDUCTOR-SEMICONDUCTOR INTERFACES; SIH2CL2; SILICON; SOFT X-RAY PHOTOELECTRON SPECTROSCOPY ID CORE-LEVEL SHIFTS; HETEROJUNCTION BIPOLAR-TRANSISTORS; ANGLE-RESOLVED PHOTOEMISSION; CHEMICAL VAPOR-DEPOSITION; ATOMIC LAYER EPITAXY; TUNNELING MICROSCOPY; SI FILMS; ADSORPTION; SPECTROSCOPY; SI(111)7X7 AB The reactions of dichlorosilane (SiCl2H2) with Ge(100) and Ge(111) are investigated with soft X-ray photoelectron spectroscopy excited by synchrotron radiation. SiCl2H2 is found to dissociatively chemisorb at all temperatures. At room temperature, the adsorbed layer is composed of multiple silicon chlorides and hydrides. At exposure temperatures between 200 and 400-degrees-C, the surfaces are covered primarily by SiCl with some higher chlorides and unchlorinated Si also present. The specific distributions of these species are slightly different on Ge(100) and Ge(111), with greater concentrations of higher silicon chlorides on Ge(111). For exposures in the range of 500 to 600-degrees-C, pure Si is deposited onto the surfaces, likely in the form of islands. For exposures at 700-degrees-C, Si is also interdiffused into the Ge substrate. C1 UNIV CALIF RIVERSIDE, DEPT PHYS, RIVERSIDE, CA 92521 USA. LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA. IBM CORP, THOMAS J WATSON RES CTR, YORKTOWN HTS, NY 10598 USA. NR 48 TC 6 Z9 6 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 EI 1879-2758 J9 SURF SCI JI Surf. Sci. PD JUN 10 PY 1995 VL 330 IS 2 BP 147 EP 155 DI 10.1016/0039-6028(95)00362-2 PG 9 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA RC804 UT WOS:A1995RC80400007 ER PT J AU SMENTKOWSKI, VS JANSCH, H HENDERSON, MA YATES, JT AF SMENTKOWSKI, VS JANSCH, H HENDERSON, MA YATES, JT TI DEUTERIUM ATOM INTERACTION WITH DIAMOND (100) STUDIED BY X-RAY PHOTOELECTRON-SPECTROSCOPY SO SURFACE SCIENCE LA English DT Article DE ADSORPTION KINETICS; DIAMOND; HYDROGEN; SURFACE RELAXATION AND RECONSTRUCTION; THERMAL DESORPTION; X-RAY PHOTOELECTRON SPECTROSCOPY ID SURFACE; HYDROGEN; PHOTOEMISSION; ADSORPTION; SILICON; GROWTH AB The interaction of atomic deuterium with diamond (100) has been studied by X-ray photoelectron spectroscopy (XPS). Reproducible cleaning and conditioning procedures have been developed using atomic hydrogen exposure and heating to 1450 K in ultrahigh vacuum. As the clean diamond surface is exposed to atomic deuterium, the FWHM of the C 1s transition initially broadens for low atomic deuterium exposures. Increasing the atomic deuterium exposure results in a sharpening of the C 1s transition. This is essentially reversible by stepwise heating to desorb the deuterium. The C 1s broadening/sharpening phenomenon may be due to the electronic inhomogeneity caused by partial deuteration of the surface region sampled by XPS. Complete deuteration leads to a more homogeneous chemical environment and thus the C 1s line sharpens. These results suggest that deep deuteration of diamond (100) may take place upon exposure to atomic deuterium. The inhomogeneity of the surface region caused by Ar+ ion bombardment has a similar broadening effect on the C 1s line. Charging effects were found to be insignificant. Deuteration of the diamond (100) surface by atomic deuterium results in apparent shifts of the C 1s binding energy, dependent (in sign) upon n-type or p-type doping in the diamond. This is consistent with band bending effects in the surface region caused by the removal of the surface state by deuterium adsorption. It is demonstrated that graphite overlayers on diamond cannot be removed with atomic D or molecular oxygen at high temperatures. C1 UNIV PITTSBURGH,DEPT CHEM,CTR SURFACE SCI,234 CHEVRON SCI CTR,PITTSBURGH,PA 15260. PHILIPPS UNIV,CTR MAT RES,DEPT PHYS,D-35032 MARBURG,GERMANY. BATTELLE NW LABS,RICHLAND,WA 99352. NR 40 TC 27 Z9 28 U1 3 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JUN 10 PY 1995 VL 330 IS 2 BP 207 EP 226 DI 10.1016/0039-6028(95)00239-1 PG 20 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA RC804 UT WOS:A1995RC80400012 ER PT J AU KNICKELBEIN, MB AF KNICKELBEIN, MB TI INFRARED-SPECTROSCOPY OF METAL CLUSTER-ADSORBATE COMPLEXES - FE-N(CH3OH)(M) REVISITED SO CHEMICAL PHYSICS LETTERS LA English DT Article ID NICKEL CLUSTERS; NIOBIUM CLUSTERS; IRON CLUSTERS; DEHYDROGENATION; REACTIVITY; KINETICS; CHEMISORPTION; DECOMPOSITION; DEPENDENCE; DEUTERIUM AB The infrared multiphoton photodissociation spectra of Fe-8(CH3OH)(m) complexes, formed via reaction of Fe-8 with methanol, have been recorded near 10 mu using a continuous wave, line-tunable carbon dioxide laser. Depletion features observed near 990 and 1070 cm(-1) are generally consistent with the observations of Zakin et al. [J. Chem. Phys. 85 (1986) 1198]. Spectra recorded using deuterium-substituted methanol, CH3OD, CD3OH, and CD3OD indicate that methanol adsorbs nondissociatively to small iron clusters at 77 K. RP KNICKELBEIN, MB (reprint author), ARGONNE NATL LAB, DIV CHEM, 9700 S CASS AVE, ARGONNE, IL 60439 USA. NR 28 TC 17 Z9 17 U1 3 U2 5 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 JUN 9 PY 1995 VL 239 IS 1-3 BP 11 EP 17 DI 10.1016/0009-2614(95)00422-Z PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD863 UT WOS:A1995RD86300003 ER PT J AU DATSKOS, PG CARTER, JG CHRISTOPHOROU, LG AF DATSKOS, PG CARTER, JG CHRISTOPHOROU, LG TI PHOTODETACHMENT OF SF6- SO CHEMICAL PHYSICS LETTERS LA English DT Article ID ELECTRON PHOTODETACHMENT; DETACHMENT; SELECTIVITY; ATTACHMENT AB The photodetachment cross section for SF6- and the photodetachment threshold for this process have been accurately measured using a newly developed technique. The photodetachment cross section has a threshold at 3.16 eV which is about three times larger than the electron affinity of the SF, molecule. The magnitude of the photodetachment cross section increases monotonically from the threshold to 1.0 X 10(-18)cm(2) at a photon energy of 3.46 eV. The small size of the measured cross section is attributed to the large relaxation in the equilibrium internuclear positions of SF6- compared to SF6; the analysis of the data indicates that the photoejected electron has an angular momentum quantum number l = 1. C1 UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996. RP DATSKOS, PG (reprint author), OAK RIDGE NATL LAB,DIV HLTH SCI RES,ATOM MOLEC & HIGH VOLTAGE PHYS GRP,POB 2008,OAK RIDGE,TN 37831, USA. NR 26 TC 27 Z9 27 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 JUN 9 PY 1995 VL 239 IS 1-3 BP 38 EP 43 DI 10.1016/0009-2614(95)00417-3 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD863 UT WOS:A1995RD86300007 ER PT J AU KALUZA, M MUCKERMAN, JT AF KALUZA, M MUCKERMAN, JT TI BRIGHT-STATE EXPANSION AND OPTIMAL-CONTROL OF HIGHLY EXCITED POLYATOMICS SO CHEMICAL PHYSICS LETTERS LA English DT Article AB A basis expansion of a quantum state of a molecule in a small orthogonal set of dynamically motivated, active bright states is presented and tested. The active bright states are derived from wavepackets (in a discrete variable representation) corresponding to different times in the time evolution of the molecule in a specified external laser field. Time evolution using the active bright-state representation is computationally less intensive and contains the essential dynamics in the quasiharmonic, quasicontinuum, and continuum regimes. Knowledge of the exact molecular spectroscopy is not needed. The active bright-state representation is thus well suited for optimal-control calculations which require a large number of wavepacket propagations. RP KALUZA, M (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. RI Muckerman, James/D-8752-2013 NR 6 TC 12 Z9 12 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD JUN 9 PY 1995 VL 239 IS 1-3 BP 161 EP 167 DI 10.1016/0009-2614(95)00454-C PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RD863 UT WOS:A1995RD86300027 ER PT J AU AGGER, R FREIMUTH, P AF AGGER, R FREIMUTH, P TI PURIFICATION AND CDNA SEQUENCE OF A MURINE PROTEIN HOMOLOGOUS TO THE HUMAN P62 TYROSINE PHOSPHOPROTEIN THAT ASSOCIATES WITH THE RAS GTPASE-ACTIVATING PROTEIN P120 GAP SO GENE LA English DT Note DE DENDRITIC CELL; GRANULAR ANTIGEN; AFFINITY PURIFICATION; PEPTIDE SEQUENCING ID CLONING AB A 68-kDa protein that binds to the murine dendritic cell-specific monoclonal antibody M342 was purified and its amino acid sequence was partially determined. Corresponding cDNA clones code for a protein that is closely related to a 62-kDa human protein (p62) that associates with the Ras GTPase-activating protein, p120 GAP, suggesting that p62 may have a dendritic cell-specific function or that an M342 cross-reactive epitope may exist on the murine p62 molecule. C1 BROOKHAVEN NATL LAB,DEPT BIOL,UPTON,NY 11973. ODENSE UNIV,DEPT MED MICROBIOL,DK-5000 ODENSE C,DENMARK. NR 7 TC 3 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1119 J9 GENE JI Gene PD JUN 9 PY 1995 VL 158 IS 2 BP 307 EP 308 DI 10.1016/0378-1119(95)00040-D PG 2 WC Genetics & Heredity SC Genetics & Heredity GA RF382 UT WOS:A1995RF38200028 PM 7541765 ER PT J AU RECINOS, A SILVEY, KJ OW, DJ JENSEN, RH STANKER, LH AF RECINOS, A SILVEY, KJ OW, DJ JENSEN, RH STANKER, LH TI SEQUENCES OF CDNAS ENCODING IMMUNOGLOBULIN HEAVY-CHAIN AND LIGHT-CHAIN VARIABLE REGIONS FROM 2 ANTI-DIOXIN MONOCLONAL-ANTIBODIES (VOL 149, PG 385, 1994) SO GENE LA English DT Correction, Addition DE RECOMBINANT DNA; MOUSE HYBRIDOMAS; POLYCHLORINATED DIBENZO-P-DIOXINS; ANTIBODY STRUCTURE C1 LAWRENCE LIVERMORE NATL LAB,BIOL & BIOTECHNOL RES PROGRAM,LIVERMORE,CA 94550. NR 1 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-1119 J9 GENE JI Gene PD JUN 9 PY 1995 VL 158 IS 2 BP 311 EP 312 DI 10.1016/0378-1119(95)00097-P PG 2 WC Genetics & Heredity SC Genetics & Heredity GA RF382 UT WOS:A1995RF38200030 PM 7607562 ER PT J AU GUIOCHON, G SARKER, M AF GUIOCHON, G SARKER, M TI CONSOLIDATION OF THE PACKING MATERIAL IN CHROMATOGRAPHIC COLUMNS UNDER DYNAMIC AXIAL-COMPRESSION .1. FUNDAMENTAL-STUDY SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article ID PREPARATIVE LIQUID-CHROMATOGRAPHY AB Packing materials do consolidate progressively inside chromatographic columns. The process is slow. The literature on the phenomenon of soil consolidation is critically reviewed and the concepts relevant to the behavior of sands are applied to conventional packing materials. Preliminary experimental results obtained with irregular-shaped particles are presented to illustrate the concepts introduced by and the conclusions of the literature survey. These results show that the consolidation of packing material in chromatographic columns is a slow process which may sometimes appear to take place as a series of ''catastrophic'' events. It involves changes in the apparent packing density of the bed which are large enough to account for the formation of large voids at the column inlet, as has been frequently reported by operators of analytical as well as large-size preparative columns. C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. RP GUIOCHON, G (reprint author), UNIV TENNESSEE,DEPT CHEM,575 BUCHLER HALL,KNOXVILLE,TN 37996, USA. NR 29 TC 40 Z9 41 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 JUN 9 PY 1995 VL 704 IS 2 BP 247 EP 268 DI 10.1016/0021-9673(95)00242-F PG 22 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA RE708 UT WOS:A1995RE70800001 ER PT J AU MILLIS, KK COLVIN, ME SHULMANROSKES, EM LUDEMAN, SM COLVIN, OM GAMCSIK, MP AF MILLIS, KK COLVIN, ME SHULMANROSKES, EM LUDEMAN, SM COLVIN, OM GAMCSIK, MP TI COMPARISON OF THE PROTONATION OF ISOPHOSPHORAMIDE MUSTARD AND PHOSPHORAMIDE MUSTARD SO JOURNAL OF MEDICINAL CHEMISTRY LA English DT Article ID MOLECULES; HYDROLYSIS; CHEMISTRY; KINETICS AB The alkylating agent isophosphoramide mustard (IPM) spontaneously forms a relatively stable aziridine derivative which can be directly observed using NMR spectroscopy. The protonations of LPM and its aziridine were probed using H-1, P-31, N-15, and O-17 NMR spectroscopy. The positions of the P-31, N-15, and O-17 resonances of IPM between pH 2 and 10 each exhibit a single monobasic titration curve with the same pK(a) of 4.31 +/- 0.02. On the basis of a comparison with other compounds and our earlier work with phosphoramide mustard, the NMR results for IPM indicate that protonation occurs at nitrogen and not oxygen. Over this same pH range, each of the H-1, P-31, and N-15 resonances of IPM-aziridine also show a single monobasic titration with a pK(a) of 5.30 +/- 0.09. The magnitude of the change in chemical shifts suggests that the protonation of the IPM-aziridine occurs at the ring nitrogen. Theoretical gas-phase calculations of PM, IPM, and IPM-aziridine suggest O-protonation to be more likely; however, aqueous phase calculations predict the N-protonated forms to be most stable. Furthermore, for PM and IPM-aziridine, which contain nonequivalent nitrogens, the theoretical calculations and experimental data both agree as to which nitrogen undergoes protonation. These results suggest that the IPM-aziridine remains unprotonated under physiological conditions and may, in part, explain the lower alkylating activity of IPM as compared to PM. C1 JOHNS HOPKINS UNIV,SCH MED,DEPT RADIOL,BALTIMORE,MD 21205. JOHNS HOPKINS UNIV,SCH MED,CTR ONCOL,BALTIMORE,MD 21205. SANDIA NATL LABS,CTR COMPUTAT ENGN,LIVERMORE,CA 94551. FU NCI NIH HHS [CA16783, CA09243-14, CA51229] NR 36 TC 16 Z9 16 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-2623 J9 J MED CHEM JI J. Med. Chem. PD JUN 9 PY 1995 VL 38 IS 12 BP 2166 EP 2175 DI 10.1021/jm00012a017 PG 10 WC Chemistry, Medicinal SC Pharmacology & Pharmacy GA RC220 UT WOS:A1995RC22000017 PM 7783148 ER PT J AU OLAH, GA GRAY, DM GRAY, CW KERGIL, DL SOSNICK, TR MARK, BL VAUGHAN, MR TREWHELLA, J AF OLAH, GA GRAY, DM GRAY, CW KERGIL, DL SOSNICK, TR MARK, BL VAUGHAN, MR TREWHELLA, J TI STRUCTURES OF FD GENE-5 PROTEIN NUCLEIC-ACID COMPLEXES - A COMBINED SOLUTION SCATTERING AND ELECTRON-MICROSCOPY STUDY SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE GENE 5 PROTEIN; SMALL-ANGLE SCATTERING; MODELING; ELECTRON MICROSCOPY ID ANGLE NEUTRON-SCATTERING; SINGLE-STRANDED-DNA; V PROTEIN; BINDING-PROTEIN; FILAMENTOUS BACTERIOPHAGES; SACCHAROMYCES-CEREVISIAE; DEOXYRIBONUCLEIC-ACID; CD MEASUREMENTS; X-RAY; PURIFICATION AB Small-angle scattering and electron microscopy studies of fd gene 5 protein (g5p) and reconstituted g5p . nucleic acid complexes have been used to test models for the complexes and evaluate their uniqueness. In addition, we have obtained new information on the dependence of nucleotide type and protein/nucleotide (P/N) ratio on the structure of the complexes. Reconstituted complexes were made with single-stranded fd viral DNA (fd ssDNA), poly[d(A)] and poly[r(A)]. All complexes form similar left-handed, flexible superhelices having approximately the same diameter, but the pitch differs among these complexes. The g5p protein is a dimer in solution and the dimers associate to form a superhelical framework to which the polynucleotide is attached. The combined X-ray and neutron scattering data confirm the nucleic acid is inside the protein superhelix. A Monte Carlo integration modeling procedure applied to the scattering data was used to systematically test large numbers of possible models for each complex, and previously proposed models based on parameters obtained from electron microscopy were found to be essentially correct and unique. The data on the complexes with different P/N ratios showed that mass per unit length values decreased while the rise per dimer and pitch of the superhelix increased for g5p . fd-ssDNA complexes with decreasing P/N ratios. C1 UNIV TEXAS,PROGRAM MOLEC & CELL BIOL FO31,RICHARDSON,TX 75083. RP OLAH, GA (reprint author), LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545, USA. OI Trewhella, Jill/0000-0002-8555-6766 FU NIGMS NIH HHS [GM19060] NR 56 TC 29 Z9 29 U1 0 U2 1 PU ACADEMIC PRESS (LONDON) LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD JUN 9 PY 1995 VL 249 IS 3 BP 576 EP 594 DI 10.1006/jmbi.1995.0320 PG 19 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RB802 UT WOS:A1995RB80200008 PM 7783213 ER PT J AU CANNON, JB AF CANNON, JB TI OAK-RIDGES STRENGTHS SO SCIENCE LA English DT Letter RP CANNON, JB (reprint author), OAK RIDGE NATL LAB,OFF PLANNING & MANAGEMENT,POB 2008,OAK RIDGE,TN 37831, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD JUN 9 PY 1995 VL 268 IS 5216 BP 1417 EP 1417 DI 10.1126/science.268.5216.1417-a PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RC190 UT WOS:A1995RC19000003 PM 17843643 ER PT J AU WOLOSCHAK, GE FELCHER, P CHANGLIU, CM AF WOLOSCHAK, GE FELCHER, P CHANGLIU, CM TI EXPRESSION OF CYTOSKELETAL AND MATRIX GENES FOLLOWING EXPOSURE TO IONIZING-RADIATION - DOSE-RATE EFFECTS AND PROTEIN-SYNTHESIS REQUIREMENTS SO CANCER LETTERS LA English DT Article DE RADIATION DOSE-RATE EFFECTS; IONIZING RADIATION; DNA-DAMAGING AGENTS; STRESS RESPONSES; DAMAGE INDUCIBLE GENES; PROTEIN SYNTHESIS ID INDUCED NEOPLASTIC TRANSFORMATION; ONCOGENIC TRANSFORMATION; GAMMA-RAYS; MAMMALIAN-CELLS; NEUTRONS; TRANSCRIPTION; STIMULATION; INDUCTION; ELEMENTS; REPAIR AB Experiments were designed to examine the effects of radiation dose-rate and cycloheximide on expression of cytoskeletal and matrix elements in Syrian hamster embryo cells. Results here demonstrated little effect of dose-rate for fission-spectrum neutrons when comparing expression of alpha-tubulin or fibronectin genes. Effects of cycloheximide, however, revealed several findings: (a) Cycloheximide repressed accumulation of alpha-tubulin following exposure to high dose-rate neutrons or gamma-rays. (b) Cycloheximide did not affect accumulation of mRNA for actin genes. (c) Cycloheximide abrogated the moderate induction of fibronectin-mRNA which occurred following exposure to gamma-rays and high dose-rate neutrons. These results suggest a role for labile proteins in the maintenance of alpha-tubulin and fibronectin mRNA accumulation following exposure to ionizing radiation. C1 LOYOLA UNIV,MED CTR,DEPT PATHOL,MAYWOOD,IL 60153. RP WOLOSCHAK, GE (reprint author), ARGONNE NATL LAB,CTR MECHANIST BIOL & BIOTECHNOL,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Woloschak, Gayle/A-3799-2017 OI Woloschak, Gayle/0000-0001-9209-8954 NR 24 TC 14 Z9 14 U1 0 U2 1 PU ELSEVIER SCI PUBL IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0304-3835 J9 CANCER LETT JI Cancer Lett. PD JUN 8 PY 1995 VL 92 IS 2 BP 135 EP 141 DI 10.1016/0304-3835(95)03767-Q PG 7 WC Oncology SC Oncology GA RG437 UT WOS:A1995RG43700003 PM 7600523 ER PT J AU FAN, JW WANG, LS AF FAN, JW WANG, LS TI PHOTOELECTRON-SPECTROSCOPY OF FEO- AND FEO2- - OBSERVATION OF LOW-SPIN EXCITED-STATES OF FEO AND DETERMINATION OF THE ELECTRON-AFFINITY OF FEO2 SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DIOXYGEN COMPLEXES; IRON; SPECTROMETRY C1 WASHINGTON STATE UNIV, DEPT PHYS, RICHLAND, WA 99352 USA. PACIFIC NW LAB, ENVIRONM MOLEC SCI LAB, RICHLAND, WA 99352 USA. NR 27 TC 79 Z9 79 U1 0 U2 9 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 8 PY 1995 VL 102 IS 22 BP 8714 EP 8717 DI 10.1063/1.468974 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RC468 UT WOS:A1995RC46800003 ER PT J AU GOLDFIELD, EM GRAY, SK SCHATZ, GC AF GOLDFIELD, EM GRAY, SK SCHATZ, GC TI QUANTUM DYNAMICS OF A PLANAR MODEL FOR THE COMPLEX-FORMING OH+CO-]H+CO2 REACTION SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DEPENDENT SCHRODINGER-EQUATION; WAVE-PACKET; 4-ATOM REACTIONS; SCATTERING; PREDISSOCIATION; CLOCKING; SYSTEMS; MATRIX; OH+CO; H+CO2 C1 ARGONNE NATL LAB,DIV CHEM,THEORET CHEM GRP,ARGONNE,IL 60439. NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208. WAYNE STATE UNIV,FAB,COLL SCI,DETROIT,MI 48202. NR 47 TC 105 Z9 105 U1 1 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 8 PY 1995 VL 102 IS 22 BP 8807 EP 8817 DI 10.1063/1.468934 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RC468 UT WOS:A1995RC46800013 ER PT J AU VRAKKING, MJJ LEE, YT AF VRAKKING, MJJ LEE, YT TI LIFETIMES OF RYDBERG STATES IN ZERO-ELECTRON-KINETIC-ENERGY EXPERIMENTS .1. ELECTRIC-FIELD-INDUCED AND COLLISIONAL ENHANCEMENT OF NO PREDISSOCIATION LIFETIMES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID NEAR-THRESHOLD PHOTOIONIZATION; PHOTOELECTRON-SPECTROSCOPY; IONIZATION THRESHOLD; AROMATIC-MOLECULES; NITRIC-OXIDE; FORCED AUTOIONIZATION; RESOLUTION; SPECTRUM; H2O; DISTRIBUTIONS C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RI Lee, Yuan-Tseh/F-7914-2012 NR 36 TC 109 Z9 109 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 8 PY 1995 VL 102 IS 22 BP 8818 EP 8832 DI 10.1063/1.468935 PG 15 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RC468 UT WOS:A1995RC46800014 ER PT J AU VRAKKING, MJJ LEE, YT AF VRAKKING, MJJ LEE, YT TI LIFETIMES OF RYDBERG STATES IN ZERO-ELECTRON-KINETIC-ENERGY EXPERIMENTS .2. ELECTRIC-FIELD-INDUCED AND COLLISIONAL ENHANCEMENT OF XE AUTOIONIZATION LIFETIMES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID QUANTUM DEFECT THEORY; AROMATIC-MOLECULES; SPECTROSCOPY; ATOMS; RESOLUTION; DYNAMICS; XENON C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RI Lee, Yuan-Tseh/F-7914-2012 NR 22 TC 54 Z9 54 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 8 PY 1995 VL 102 IS 22 BP 8833 EP 8841 DI 10.1063/1.468936 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RC468 UT WOS:A1995RC46800015 ER PT J AU PESKIN, U MILLER, WH REISLER, H AF PESKIN, U MILLER, WH REISLER, H TI FINAL STATE-SELECTED SPECTRA IN UNIMOLECULAR REACTIONS - A TRANSITION-STATE-BASED RANDOM-MATRIX MODEL FOR OVERLAPPING RESONANCES SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID BENT TRIATOMIC MOLECULE; EXPANSION-COOLED NO2; ROTATIONAL DISTRIBUTIONS; PHOTO-DISSOCIATION; POLYATOMIC-MOLECULES; LEVEL DENSITY; DECAY-RATES; THRESHOLD; PHOTODISSOCIATIONS; DECOMPOSITION C1 LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. UNIV SO CALIF,DEPT CHEM,LOS ANGELES,CA 90089. RP PESKIN, U (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. NR 58 TC 38 Z9 39 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 8 PY 1995 VL 102 IS 22 BP 8874 EP 8886 DI 10.1063/1.468941 PG 13 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RC468 UT WOS:A1995RC46800020 ER PT J AU MCGRAW, R LAVIOLETTE, RA AF MCGRAW, R LAVIOLETTE, RA TI FLUCTUATIONS, TEMPERATURE, AND DETAILED BALANCE IN CLASSICAL NUCLEATION THEORY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID HOMOGENEOUS NUCLEATION; AEROSOLS C1 IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. RP MCGRAW, R (reprint author), BROOKHAVEN NATL LAB,DIV ENVIRONM CHEM,UPTON,NY 11973, USA. NR 30 TC 23 Z9 24 U1 0 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JUN 8 PY 1995 VL 102 IS 22 BP 8983 EP 8994 DI 10.1063/1.468952 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RC468 UT WOS:A1995RC46800031 ER PT J AU CHUMANOV, G SOKOLOV, K GREGORY, BW COTTON, TM AF CHUMANOV, G SOKOLOV, K GREGORY, BW COTTON, TM TI COLLOIDAL METAL-FILMS AS A SUBSTRATE FOR SURFACE-ENHANCED SPECTROSCOPY SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID SELF-ASSEMBLED MONOLAYERS; RAMAN-SCATTERING ANALYSIS; SILVER PARTICLES; ISLAND FILMS; AG; GOLD; (3-MERCAPTOPROPYL)TRIMETHOXYSILANE; 1-ALKANETHIOLS; ALUMINA; GLASS AB Colloidal films of gold and silver were prepared on glass or quartz slides. The slides were derivatized with (3-mercaptopropyl)trimethoxysilane and subsequently reacted with aqueous metal colloids for variable time periods. The formation of the sulfur-metal bond provides a stable colloidal film on the surface. Because of the electrostatic interaction between individual particles, a semiregular structure is produced, as can be seen from electron micrographs. The unique property of the colloidal film is that they possess the optical properties of colloidal metals and the convenience of solid substrates. The effect of the dielectric constant of solvents on the optical frequencies, as well as the specific interaction of the solvent molecules with the metal on the plasmon resonances, was examined in detail. The colloidal films exhibit strong enhancement of Raman scattering and fluorescence emission from molecules adsorbed on the surface. Enhancement of fluorescence was observed for fluorescein-labeled molecules spaced 0-200 Angstrom away from the surface. These substrates can be used in a number of analytical applications, such as surface-enhanced spectroscopies as well as for fundamental studies of plasmon resonances in small metal particles. C1 IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50011 USA. IOWA STATE UNIV SCI & TECHNOL, DEPT CHEM, AMES, IA 50011 USA. OI Sokolov, Konstantin/0000-0002-0198-2005 NR 39 TC 318 Z9 321 U1 4 U2 47 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 8 PY 1995 VL 99 IS 23 BP 9466 EP 9471 DI 10.1021/j100023a025 PG 6 WC Chemistry, Physical SC Chemistry GA RC459 UT WOS:A1995RC45900025 ER PT J AU RODRIGUEZ, JA KUHN, M AF RODRIGUEZ, JA KUHN, M TI REACTION OF S-2 WITH NM/MO(110) (NM=CU OR AG) SURFACES - POISONING OF BIMETALLIC BONDING AND NOBLE-METAL-PROMOTED SULFIDATION OF MO SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID X-RAY PHOTOELECTRON; SINGLE-CRYSTAL; MO(110); SULFUR; CATALYSIS; GROWTH; COPPER; CHEMISORPTION; ADSORPTION; RU(0001) AB TDS, XPS, and XAES were used to examine the reaction of S-2 gas with NM/Mo(110) (NM = Cu or Ag). On these surfaces S-2 dissociates into atomic S at 300 K. At submonolayer coverages (theta(s) + theta(NM) < 1 ML), S and Cu or Ag do not react to form noble-metal sulfides on top of Mo(110). Instead, the S and noble-metal adatoms compete for making bonds with the Mo(110) substrate. On the average, each S adatom diminishes the ability for bimetallic bonding of a minimum of three Mo surface atoms. At 0.4 < theta(s) < 0.8 ML, the weakening of the Mo-Cu and Mo-Ag bonds is very significant (>5 kcal/mol), and the noble-metal adatoms form 3D clusters on the Mo(110) surface. The exposure of NM/Mo(110) surfaces to large amounts of S-2 gas (theta(s) > 1 ML) at 300 K produces noble-metal sulfides (CuSx or AgSy) and chemisorbed sulfur, without forming molybdenum sulfides. The sulfidation of molybdenum occurs after exposing NM/Mo(110) surfaces to S-2 at 600-700 K. Cu and Ag promote (or catalyze) the formation of molybdenum sulfides. By comparing the results for the S-2/NM/Mo(110) systems with those reported for S-2/NM/Pt(111) systems, it is found that the ''promotional effect'' of a noble metal on the rate of sulfidation of a transition metal depends on (a) the ability of the noble metal to dissociate S-2, (b) the thermochemical stability of the transition-metal sulfide (which makes the process ''downhill''), and (c) the atom-atom attractive interactions within the lattice of the transition metal (which make the process ''uphill''). RP RODRIGUEZ, JA (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. NR 47 TC 35 Z9 35 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 8 PY 1995 VL 99 IS 23 BP 9567 EP 9575 DI 10.1021/j100023a039 PG 9 WC Chemistry, Physical SC Chemistry GA RC459 UT WOS:A1995RC45900039 ER PT J AU HO, PC TRIOLO, R JOHNSON, JS AF HO, PC TRIOLO, R JOHNSON, JS TI SMALL-ANGLE NEUTRON-SCATTERING FROM SOLUTIONS OF LOW-EQUIVALENT-WEIGHT ORGANIC SALTS IN D2O SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID PERCUS-YEVICK FLUID; AQUEOUS-SOLUTIONS; DISTRIBUTED DIAMETERS; MICELLAR SOLUTIONS; SURFACE TENSIONS; LIGHT-SCATTERING; SODIUM; SYSTEMS; VOLUMES; OCTANETRIOL-1,2,3 AB Small-angle neutron scattering from D2O solutions of a series of organic salts, ranging from sodium toluenesulfonate to sodium triisopropylbenzenesulfonate, has been measured. Evidence of aggregation was found, at least at high concentrations, in all cases. The patterns were interpreted by the mean spherical approximation, and estimates of the size of the species are presented. Aggregate sizes increase with increase in equivalent weight. Addition of toluene increases aggregation number. A few measurements on solutions of sodium cyclohexylane carboxylates indicate that aggregates are somewhat smaller than those of aromatic salts of about the same number of carbons. C1 UNIV PALERMO,DIPARTIMENTO CHIM FIS,I-90123 PALERMO,ITALY. RP HO, PC (reprint author), OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,POB 2008,OAK RIDGE,TN 37831, USA. NR 48 TC 5 Z9 5 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 8 PY 1995 VL 99 IS 23 BP 9581 EP 9588 DI 10.1021/j100023a041 PG 8 WC Chemistry, Physical SC Chemistry GA RC459 UT WOS:A1995RC45900041 ER PT J AU SODERHOLM, L LIU, GK MUNTEAN, J MALINSKY, J ANTONIO, MR AF SODERHOLM, L LIU, GK MUNTEAN, J MALINSKY, J ANTONIO, MR TI COORDINATION AND VALENCE OF EUROPIUM IN THE HETEROPOLYANION [EUP5W30O110](12-) SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID LANTHANIDE AB The synthesis and characterization of the Eu-encrypted heteropolyanion [EuP5W30O110](12-) are presented. X-ray absorption near-edge structure experiments were used to determine that Eu is trivalent in the anion. Optical spectra confirm this finding. The unusual cyclic voltammogram obtained for the Eu heteropolyanion is discussed in terms of the stability of Eu-II under reducing conditions. Time delayed optical fluorescence data are only consistent with two structurally inequivalent Eu ions, both inside the heteropoly cavity. Lifetime measurements of the D-5(o) State indicate that the two structurally different Eu sites are not occupied in the same anion. In addition, from complementary measurements on samples made in D2O, it is determined that there are three waters coordinated to Eu in one site and only two waters coordinated to Eu in the second site. P-31 NMR and cyclic voltammetry data, obtained from samples with either one or two sites occupied, are indistinguishable. Possible models to explain the presence of two sites are discussed. RP SODERHOLM, L (reprint author), ARGONNE NATL LAB,DIV CHEM,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 19 TC 23 Z9 23 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 8 PY 1995 VL 99 IS 23 BP 9611 EP 9616 DI 10.1021/j100023a045 PG 6 WC Chemistry, Physical SC Chemistry GA RC459 UT WOS:A1995RC45900045 ER PT J AU AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BARNETT, BM BATTY, CJ BENAYOUN, M BAUCHERT, K BIRIEN, P BLUM, P BOSSINGHAM, R BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T COOPER, A CRAMER, O CROWE, KM DEGENER, T DIETZ, HP DJAOSHVILI, N VONDOMBROWSKI, S DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C GEMESY, T GIARRITTA, P HACKMANN, R HADDOCK, RP HEINSIUS, FH HERZ, M HESSEY, NP HIDAS, P HOLZHAUSSEN, C ILLINGER, P JAMNIK, D KALINOWSKY, H KALTEYER, B KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K KUNZE, M LAKATA, M LANDUA, R LUDEMANN, J MATTHAEY, H MCCRADY, R MERKEL, M MERLO, JP MEYER, CA MONTANET, L NOBLE, A OUARED, R OULDSAADA, F PETERS, K PINDER, CN RAVNDAL, S REGENFUS, C RESAG, S SCHAFER, E SCHMIDT, P SEIBERT, R SPANIER, S STOCK, H STRASSBURGER, C STROHBUSCH, U SUFFERT, M THOMA, U TISCHHAUSER, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOLL, J ZOU, BS ZUPANCIC, C AF AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BARNETT, BM BATTY, CJ BENAYOUN, M BAUCHERT, K BIRIEN, P BLUM, P BOSSINGHAM, R BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T COOPER, A CRAMER, O CROWE, KM DEGENER, T DIETZ, HP DJAOSHVILI, N VONDOMBROWSKI, S DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C GEMESY, T GIARRITTA, P HACKMANN, R HADDOCK, RP HEINSIUS, FH HERZ, M HESSEY, NP HIDAS, P HOLZHAUSSEN, C ILLINGER, P JAMNIK, D KALINOWSKY, H KALTEYER, B KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K KUNZE, M LAKATA, M LANDUA, R LUDEMANN, J MATTHAEY, H MCCRADY, R MERKEL, M MERLO, JP MEYER, CA MONTANET, L NOBLE, A OUARED, R OULDSAADA, F PETERS, K PINDER, CN RAVNDAL, S REGENFUS, C RESAG, S SCHAFER, E SCHMIDT, P SEIBERT, R SPANIER, S STOCK, H STRASSBURGER, C STROHBUSCH, U SUFFERT, M THOMA, U TISCHHAUSER, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOLL, J ZOU, BS ZUPANCIC, C TI FIRST OBSERVATION OF THE PRODUCTION OF NUCLEON RESONANCES IN ANTIPROTON ANNIHILATION IN LIQUID DEUTERIUM SO PHYSICS LETTERS B LA English DT Article AB We report the observation of nucleon resonances in the reaction ($) over bar d --> pi(0) pi(0) n for antiprotons stopping in liquid deuterium. The process p ($) over bar d --> Delta (1232) pi(0) is identified and its branching ratio determined to be (2.21 +/- 0.24). 10(-5). C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RUHR UNIV BOCHUM,D-44780 BOCHUM,GERMANY. UNIV BONN,D-53115 BONN,GERMANY. HUNGARIAN ACAD SCI,H-1525 BUDAPEST,HUNGARY. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. CERN,CH-1211 GENEVA,SWITZERLAND. UNIV HAMBURG,D-22761 HAMBURG,GERMANY. UNIV KARLSRUHE,D-76021 KARLSRUHE,GERMANY. UNIV LONDON QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV MAINZ,D-55099 MAINZ,GERMANY. CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213. UNIV MUNICH,D-80333 MUNICH,GERMANY. CTR RECH NUCL,F-67037 STRASBOURG,FRANCE. UNIV ZURICH,CH-8057 ZURICH,SWITZERLAND. RP AMSLER, C (reprint author), UNIV ZURICH,CH-8057 ZURICH,SWITZERLAND. RI Meyer, Curtis/L-3488-2014; OI Meyer, Curtis/0000-0001-7599-3973; Burchell, Mark/0000-0002-2680-8943 NR 4 TC 17 Z9 17 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 JUN 8 PY 1995 VL 352 IS 1-2 BP 187 EP 192 DI 10.1016/0370-2693(95)00508-I PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA RE677 UT WOS:A1995RE67700029 ER PT J AU PICKERING, IJ GEORGE, GN AF PICKERING, IJ GEORGE, GN TI POLARIZED X-RAY-ABSORPTION SPECTROSCOPY OF CUPRIC CHLORIDE DIHYDRATE SO INORGANIC CHEMISTRY LA English DT Article ID SHAKE-DOWN PHENOMENA; NEAR-EDGE STRUCTURE; BLUE COPPER SITE; FINE-STRUCTURE; K-EDGE; CRYSTAL-STRUCTURE; XANES SPECTRA; PLASTOCYANIN; TRANSITION; COMPLEXES AB We report a detailed polarized single-crystal X-ray absorption spectroscopic study of CuCl2 . 2H(2)O, with measurements at both the copper K-edge and the chlorine K-edge. The angular dependence of both dipole-allowed and quadrupole-allowed transitions is determined in detail for the copper K-edge. The formally dipole-forbidden, quadrupole-allowed Cu K-edge 1s --> 3d transition behaves as a pure quadrupole transition, with no significant dipole contribution. The 1s --> 3d transition is found to have predominantly 3d(x2-y2) character, as expected, but evidence is also given for vacancies in a lower lying d orbital, possibly 3d(x), arising from the presence of d pi-d pi bonding with the chloride ligands. The chlorine K-edge data show a strongly polarized pre-edge resonance at similar to 2821 eV, which can be interpreted in terms of a transition from the chlorine Is orbital to an antibonding orbital with significant contributions from both chlorine 3p and the half-filled copper 3d(x2-y2) orbital. RP PICKERING, IJ (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD SYNCHROTRON RADIAT LAB,POB 4349,MS 69,STANFORD,CA 94309, USA. RI George, Graham/E-3290-2013; Pickering, Ingrid/A-4547-2013; OI Pickering, Ingrid/0000-0002-0936-2994 NR 46 TC 72 Z9 72 U1 1 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD JUN 7 PY 1995 VL 34 IS 12 BP 3142 EP 3152 DI 10.1021/ic00116a004 PG 11 WC Chemistry, Inorganic & Nuclear SC Chemistry GA RC424 UT WOS:A1995RC42400004 ER PT J AU SUN, J WISHART, JF GARDINEER, MB CHO, MOP ISIED, SS AF SUN, J WISHART, JF GARDINEER, MB CHO, MOP ISIED, SS TI SUBSTITUTED TETRAAMMINERUTHENIUM CYTOCHROME-C DERIVATIVES - CHEMISTRY AND ELECTRON-TRANSFER REACTIONS SO INORGANIC CHEMISTRY LA English DT Article ID RUTHENIUM; COMPLEXES; PROTEINS; GLYCINAMIDE; DEPENDENCE; MYOGLOBIN AB Horse-heart (hh) cytochrome c, modified at His-33, and Candida krusei (Ck) cytochrome c, modified at His-39, with a series of cis- and trans-[L(NH3)(4)Ru(III)cyt c] derivatives, where L is isonicotinamide (isn) or pyridine (py), have been prepared and characterized. Rate constants for intramolecular electron transfer from the heme(II) to Ru(III) in the [L(NH3)(4)Ru(III)cyt c(II)] intermediates generated by oxidative pulse radiolysis of the fully reduced modified protein species were as follows (k (s(-1)), Delta H-double dagger (kcal mol(-1)), Delta S-double dagger (cal deg(-1)mol(-1)), -Delta G degrees (eV)): 440, 7.3, -22, 0.18 for L = trans-isn (hh); 440, 6.2, -26, 0.18 for L = cis-isn (hh); 126, 8.8, -19, 0.11 for L = trans-py (hh); 220, 6.4, -27, 0.13 for L = trans-isn (Ck); 154, 2.3, -41, 0.18 for L = NH3 (Ck). Relative differences in the rates are accounted for by variations in the driving force and reorganization energies in these ruthenium-modified proteins resulting from the nature of the ligands around the ruthenium center and from the different sites of modification on the cytochrome. The fully oxidized [L(NH3)(4)Ru(III)cyt c(III)] species undergo slow redox disproportionation reactions (k = 35 M(-1) s(-1), pH 7.0) which have been studied by optical and electrochemical methods. The Ru(IV) species thus created subsequently rearranges in an irreversible manner. In the presence of excess oxidant, all of the bound ruthenium is converted to the rearranged form. To avoid this problem, the [L(NH3)(4)Ru(III)cyt c(II)] intermediates for intramolecular electron-transfer studies were generated from the stable [L(NH3)(4)Ru(II)cyt c(II)] form. C1 RUTGERS STATE UNIV,DEPT CHEM,NEW BRUNSWICK,NJ 08903. BROOKHAVEN NATL LAB,UPTON,NY 11973. RI Wishart, James/L-6303-2013 OI Wishart, James/0000-0002-0488-7636 NR 38 TC 18 Z9 18 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD JUN 7 PY 1995 VL 34 IS 12 BP 3301 EP 3309 DI 10.1021/ic00116a024 PG 9 WC Chemistry, Inorganic & Nuclear SC Chemistry GA RC424 UT WOS:A1995RC42400024 ER PT J AU SATCHER, JH DROEGE, MW WEAKLEY, TJR TAYLOR, RT AF SATCHER, JH DROEGE, MW WEAKLEY, TJR TAYLOR, RT TI USE OF LIGAND DESIGN TO PROVIDE COORDINATION ASYMMETRY IN A BINUCLEAR METALLOPROTEIN MODEL SYSTEM - LIGAND SYNTHESIS, COORDINATION CHEMISTRY WITH COPPER, AND DEMONSTRATION OF SITE-DIRECTED REACTIVITY SO INORGANIC CHEMISTRY LA English DT Article ID ZINC SUPEROXIDE-DISMUTASE; DINUCLEAR IRON-OXO; CRYSTAL-STRUCTURE; ACTIVE-SITE; RIBONUCLEOTIDE REDUCTASE; HEMOCYANIN MODELS; COMPLEXES; PROTEINS; DIOXYGEN; BINDING AB The synthesis and coordination chemistry of a new asymmetric multidentate ligand designed for modeling coordination number asymmetry at metal sites in binuclear metalloproteins are described., A binuclear copper complex of this ligand demonstrates proof-of-concept for inducing coordinative unsaturation at one metal of the binuclear pair, and subsequent reaction with azide illustrates site-directed reactivity. The ligand N,N,N'-tris((N-methyl-2-benzimidazolyl)methyl)-N'-methyl- 1,3-diamino-2-propanol (HBMDP) was prepared in good yield by a five-step procedure. HBMDP reacts with the copper(II) ion in methanol to produce a mononuclear copper complex, [CuHBMDP](ClO4)(2) . CH2CN, that crystallizes in the triclinic space group with unit cell dimensions a = 10.833(3) Angstrom, b = 12.457(3) Angstrom, c = 15.214(3) Angstrom, alpha = 78.28(2)degrees, beta = 79.26(2)degrees, and gamma = 68.10(2)degrees. A single-crystal X-ray structure shows that the copper ion is coordinated to the five nitrogen donor atoms in a distorted trigonal bipyramid. The hydroxo oxygen of the ligand does not participate in metal coordination. On the other hand, the reaction of HBMDP with 2 equiv each of copper(II) ion and acetate in methanol produces the binuclear copper complex [Cu(2)BMDP(OAc)](ClO4)(2) . 2H(2)O, which crystallizes in the monoclinic space group C2/m with unit cell dimensions a = 19.934(4) Angstrom, b = 23.460(9) Angstrom, c = 20.039(4) Angstrom, and beta = 110.65(2)degrees. A single-crystal X-ray structure reveals that the two copper ions are coordinated to the aromatic and aliphatic nitrogens as well as being bridged by the acetate anion and the alkoxide oxygen of the ligand. As a result of the inherent asymmetry of the ligand, one copper ion is five-coordinate (distorted trigonal bipyramidal) while the other copper ion is four-coordinate (distorted square planar). The crystal structure also reveals that in the solid state an oxygen from one of the perchlorate counterions is weakly bound to the four-coordinate copper (similar to 2.6 Angstrom), suggesting that a vacant coordination site exists at this formally four-coordinate copper center. The potential for site-directed reactivity at this lower coordinated copper center was demonstrated by adding 0.5 equiv of azide ion to the binuclear copper complex in acetonitrile. The resulting azido-bridged complex, {[Cu(2)BMDP(OAc)]N-2(3)}(ClO4)(3) . 8.5H(2)O, crystallizes in the orthorhombic space group Cmca with unit cell dimensions a = 22.603(3) Angstrom, b = 19.565(3) Angstrom, and c = 36.965(3) Angstrom. A single-crystal X-ray structure shows that the two copper ions within the binuclear unit; are still coordinated by the ligand nitrogens, the acetate, and the ligand alkoxy oxygen. In addition, the copper ion that was four-coordinate in the binuclear complex is now bridged by azide to its companion four-coordinate copper in a separate binuclear unit. As a result, both coppers within the binuclear unit are now five-coordinate, one remaining distorted trigonal bipyramidal while the other adopts square pyramidal geometry. In this reaction, azide specifically fills the vacant coordination site of the four-coordinate copper ion in the binuclear complex. Although these two binuclear paramagnetic copper(II) complexes are magnetically weakly coupled, their H-1 NMR spectra show relatively sharp lines that provide solution assignments consistent with the solid state structures. To our knowledge this is the first example of a binuclear copper complex to exhibit both coordination number asymmetry and directed reactivity at one metal center by virtue of ligand design. C1 LAWRENCE LIVERMORE NATL LAB,DIV CHEM & MAT SCI,LIVERMORE,CA 94550. UNIV OREGON,DEPT CHEM,EUGENE,OR 97403. NR 79 TC 79 Z9 79 U1 2 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD JUN 7 PY 1995 VL 34 IS 12 BP 3317 EP 3328 DI 10.1021/ic00116a026 PG 12 WC Chemistry, Inorganic & Nuclear SC Chemistry GA RC424 UT WOS:A1995RC42400026 ER PT J AU SCHWARTZ, DJ BALL, GE ANDERSEN, RA AF SCHWARTZ, DJ BALL, GE ANDERSEN, RA TI INTERACTIONS OF CIS-P(2)PTX(2) COMPLEXES (X=H, CH3) WITH BIS(PENTAMETHYLCYCLOPENTADIENYL)YTTERBIUM SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID RAY CRYSTAL-STRUCTURE; H-C INTERACTIONS; MOLECULAR-ORBITAL CALCULATIONS; NUCLEAR-MAGNETIC-RESONANCE; CARBON HYDROGEN-BONDS; LN = LA; X-RAY; TRANSITION-METAL; PHOTOELECTRON-SPECTRA; ELECTRONIC-STRUCTURE AB The interactions formed in solution between the bent lanthanide metallocene Cp*Yb-2 (1) and cis-P(2)PtX(2) complexes (P-2 = a chelating phosphine; X = H, CH3) have been investigated using NMR spectroscopy. 1 has been found to form a significant interaction with the cis dihydride complexes [(Cy)(2)P(CH2),P(Cy)(2)]PtH2 (n = 2, dcype, 4; n = 3, dcypp, 6). Intermolecular exchange is slow on the NMR time scale for a 1:1 sample of 1 and 4, and there are significant perturbations in the spectral values from those of free 4. Additionally, (1)J(YbH) Of 180 HZ and J(PtYb) of 2260 Hz are present. A sample of 1 and 6 gives almost identical spectra values. Fast intermolecular exchange (NMR) occurs for samples containing an excess of the dihydride complexes but not for samples containing an excess of 1. The NMR values of a 1:1 sample of the dimethyl complex (dippe)Pt(CH3)2 (dippe = (Pr-i)(2)P(CH2)2P(Pr-i)2) (8) and 1 are perturbed from the analogous values for free 8, but fast intermolecular exchange is present on the NMR time scale down to -90 degrees C. The solid-state structure of this adduct, 9, shows a rare mode of an agostic bridging methyl interaction; however, (1)J(CH3) is unchanged from that of 8. Crystal data for 9: monoclinic, space group C2/c, with a = 33.90(2) Angstrom, b = 11.255(6) Angstrom, c = 20.535(6) Angstrom, beta = 98.41(4)degrees, V = 7750(7) Angstrom(3), Z = 8, final R = 0.029 for 361 variables, and 3300 data with I > 3 sigma(I). A 1:1 sample of 1 and a methyl hydride complex, (dippe)Pt(CH3)-(H)(10) undergoes slow exchange in solution, with (1)J(ybH) of 168 Hz and J(PtYb) of 960 Hz. Again (I)J(CH3) is unchanged from that of free 10. The Yb-CH3 interaction likely arises from geometrical constraints, the Yb-hydride interaction holding the Yb center near the methyl group. The solid-state structure of this adduct, 11, shows an asymmetric (u-CH3)(u-H) bridge. Cystal data for 11: monoclinic, space group P2(1)/c, with a = 18.778(5) Angstrom, b = 10.903(4) Angstrom, c = 20.255(5) Angstrom, beta = 114.74(2)degrees, V = 3766(2) Angstrom(3), Z = 4, final R = 0.069 for 327 variables, and 4694 data with I > 3 sigma(I). The NMR perturbations and coupling constants resulting from the interactions of 1 with the P(2)PtX(2) complexes are discussed in detail and correlated with the solid-state structures. The Pt-195 and Yb-171 chemical shifts of 1, the Pt(II) complexes, and the 1:1 adducts are also reported. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. RI Ball, Graham/L-6638-2015 OI Ball, Graham/0000-0002-0716-2286 NR 91 TC 37 Z9 37 U1 2 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD JUN 7 PY 1995 VL 117 IS 22 BP 6027 EP 6040 DI 10.1021/ja00127a016 PG 14 WC Chemistry, Multidisciplinary SC Chemistry GA RC450 UT WOS:A1995RC45000016 ER PT J AU CALDWELL, WB CAMPBELL, DJ CHEN, KM HERR, BR MIRKIN, CA MALIK, A DURBIN, MK DUTTA, P HUANG, KG AF CALDWELL, WB CAMPBELL, DJ CHEN, KM HERR, BR MIRKIN, CA MALIK, A DURBIN, MK DUTTA, P HUANG, KG TI A HIGHLY ORDERED SELF-ASSEMBLED MONOLAYER FILM OF AN AZOBENZENEALKANETHIOL ON AU(111) - ELECTROCHEMICAL PROPERTIES AND STRUCTURAL CHARACTERIZATION BY SYNCHROTRON IN-PLANE X-RAY-DIFFRACTION, ATOMIC-FORCE MICROSCOPY, AND SURFACE-ENHANCED RAMAN-SPECTROSCOPY SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Review ID ORGANIZED MOLECULAR ASSEMBLIES; REVERSIBLE ALIGNMENT CHANGE; INTERFACIAL POTENTIAL DISTRIBUTION; SCANNING TUNNELING MICROSCOPY; ELECTRON-TRANSFER KINETICS; OXIDIZED ALUMINUM SURFACE; LANGMUIR-BLODGETT LAYERS; NEMATIC LIQUID-CRYSTALS; NORMAL-ALKANOIC ACIDS; SIDE-CHAIN POLYMERS AB The synthesis and characterization of p-HS(CH2)(11)OC6H4N=NC6H5, compound 1d, is reported. Compound 1d self-assembles onto Au(111) substrates into highly ordered monolayer films. Self-assembled monolayer films (SAMs) of 1d on Au(111)/mica have been characterized by ellipsometry, surface-enhanced Raman spectroscopy (SERS), and atomic force microscopy (AFM). We also report the characterization of SAMs of 1d on bulk single crystal Au(111) by synchrotron in-plane X-ray diffraction (XRD) measurements. AFM and in-plane XRD suggest that a SAM of 1d is comprised of domains of 1d which form a hexagonal lattice (4.50 +/- 0.06 Angstrom nearest neighbor spacing) that is incommensurate with the underlying Au(111) lattice. A model is proposed to describe the SAM structure. In such a model, small bundles (similar to 80 molecules) of ordered azobenzene moieties that rest over a set of inward tilting alkyl surface tethering groups make up the individual domains. The ''bundle model'' for a SAM of 1d on Au(111) is a new one and provides insight into the way adsorbate molecules may arrange themselves in these novel materials. Thermal annealing of the as-deposited SAM of 1d results in a modest increase in domain size from similar to 45 to similar to 55 Angstrom and a change in azobenzene tilt angle from 20-30 degrees to approximately 0 degrees with no change in nearest neighbor spacing. The redox activity of the azobenzene group is significantly affected by monolayer film structure. Only 2% of the azobenzene groups within a SAM of 1d are electrochemically accessible through cyclic voltammetry in a THF/0.1 M n-Bu(4)NPF(6) electrolyte. The monolayer structure impedes the incorporation of charge compensating ions into the film, thereby regulating the electrochemical accessibility of the azobenzene redox centers within the film. Submonolayer films of 1d and films prepared by the coadsorption of 1d with ethanethiol on Au(111)/mica have greater electrochemical accessibilities with regard to the azobenzene groups that do pure SAMs of 1d. Interfacial capacitance measurements and film penetration studies with Fe(CN)(6)(3-) show that SAMs of 1d are densely packed structures which form impenetrable barriers to Fe(CN)(6)(3-). C1 NORTHWESTERN UNIV,DEPT CHEM,EVANSTON,IL 60208. NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60208. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RI Mirkin, Chad/E-3911-2010 NR 112 TC 226 Z9 226 U1 10 U2 129 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD JUN 7 PY 1995 VL 117 IS 22 BP 6071 EP 6082 DI 10.1021/ja00127a021 PG 12 WC Chemistry, Multidisciplinary SC Chemistry GA RC450 UT WOS:A1995RC45000021 ER PT J AU AMES, BN GOLD, LS WILLETT, WC AF AMES, BN GOLD, LS WILLETT, WC TI THE CAUSES AND PREVENTION OF CANCER SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Review ID NON-HODGKINS-LYMPHOMA; LOW-INCOME HOUSEHOLDS; HEPATITIS-C VIRUS; BREAST-CANCER; HEPATOCELLULAR-CARCINOMA; COLON CANCER; EPIDEMIOLOGIC EVIDENCE; HEMATOLOGICAL FINDINGS; DIETARY RESTRICTION; CELL-PROLIFERATION AB Epidemiological evidence indicates that avoidance of smoking, increased consumption of fruits and vegetables, and control of infections will have a major effect on reducing rates of cancer, Other factors include avoidance of intense sun exposure, increases in physical activity, and reduction of alcohol consumption and possibly red meat, A substantial reduction in breast cancer is likely to require modification of ses hormone levels, and development of practical methods for doing so is a high research priority, Resolution of the potential protective roles of specific antioxidants and other constituents of fruits and vegetables deserves major attention, Mechanistic studies of carcinogenesis indicate an important role of endogenous oxidative damage to DNA that is balanced by elaborate defense and repair processes, Also key is the rate of cell division, which is influenced by hormones, growth, cytotoxicity, and inflammation, as this determines the probability of converting DNA lesions to mutations, These mechanisms may underlie many epidemiologic observations. C1 LAWRENCE BERKELEY LAB,DIV LIFE SCI,BERKELEY,CA 94720. HARVARD UNIV,SCH PUBL HLTH,DEPT EPIDEMIOL,CAMBRIDGE,MA 02138. HARVARD UNIV,SCH PUBL HLTH,DEPT NUTR,CAMBRIDGE,MA 02138. HARVARD UNIV,SCH MED,DEPT MED,CHANNING LAB,CAMBRIDGE,MA 02138. BRIGHAM & WOMENS HOSP,CAMBRIDGE,MA 02138. RP AMES, BN (reprint author), UNIV CALIF BERKELEY,DIV BIOCHEM & MOLEC BIOL,BERKELEY,CA 94720, USA. FU NCI NIH HHS [CA39910]; NIEHS NIH HHS [ES01896] NR 155 TC 881 Z9 898 U1 12 U2 137 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD JUN 6 PY 1995 VL 92 IS 12 BP 5258 EP 5265 DI 10.1073/pnas.92.12.5258 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RB804 UT WOS:A1995RB80400002 PM 7777494 ER PT J AU JARVELA, IE MITCHISON, HM CALLEN, DF LERNER, TJ DOGGETT, NA TASCHNER, PEM GARDINER, RM MOLE, SE AF JARVELA, IE MITCHISON, HM CALLEN, DF LERNER, TJ DOGGETT, NA TASCHNER, PEM GARDINER, RM MOLE, SE TI PHYSICAL MAP OF THE REGION CONTAINING THE GENE FOR BATTEN-DISEASE (CLN3) SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article; Proceedings Paper CT 5th International Conference on Neuronal Ceroid-Lipofuscinoses - Ceroid-Lipofuscinoses: Batten Disease and Allied Disorders CY MAY 19-21, 1994 CL STATEN ISLAND, NY SP NEW YORK STATE INST BASIC RES DEV DISABIL DE BATTEN DISEASE; CLN3; JUVENILE ONSET NEURONAL CEROID LIPOFUSCINOSIS; NCL; 16P12 ID HUMAN CHROMOSOME-16; MOUSE CHROMOSOME-7; LOCALIZATION; FRAGMENTS; DNA AB CLN3 has been mapped genetically to 16p12, to the interval between D16S288 and D16S383, a sex-averaged genetic distance of 2.1 cM, Analysis of disease haplotypes for four microsatellite markers in this interval, D16S288, D16S299, D16S298, and SPN, has shown significant allelic association between one allele at each of these loci and CLN3. Ah four of the associated markers were used as nucleation sites in the isolation of genomic clones (YACs), A contig was assembled which contains 3 of the 4 associated markers and which confirmed the relative order of these markers, Marker D16S272 has been located on the physical map between D16S288 and D16S299. Restriction mapping has demonstrated the location of possible CpG islands. One gene, STP, has been localised on the YAC contig proximal to D16S298 and is therefore a candidate for CLN3, Other genes, including IL4R, SGLT2, and UQCRC2, have been excluded from this region. (C) 1995 Wiley-Liss,Inc. C1 UNIV LONDON UNIV COLL,RAYNE INST,DEPT PAEDIAT,LONDON WC1E 6JJ,ENGLAND. WOMENS & CHILDRENS HOSP,DEPT CYTOGENET & MOLEC GENET,ADELAIDE,SA,AUSTRALIA. MASSACHUSETTS GEN HOSP,MOLEC NEUROGENET UNIT,BOSTON,MA. LOS ALAMOS NATL LAB,DIV LIFE SCI,LOS ALAMOS,NM. LOS ALAMOS NATL LAB,CTR HUMAN GENOME STUDIES,LOS ALAMOS,NM 87545. LEIDEN UNIV,DEPT HUMAN GENET,SYLVIUS LAB,LEIDEN,NETHERLANDS. RI Mole, Sara/C-2024-2008; Callen, David/G-1975-2012; Taschner, Peter/J-8853-2014; Jarvela, Irma/L-5836-2013; OI Taschner, Peter/0000-0001-9621-465X; Callen, David/0000-0002-6189-9991; Mole, Sara/0000-0003-4385-4957 FU Wellcome Trust NR 12 TC 8 Z9 8 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD JUN 5 PY 1995 VL 57 IS 2 BP 316 EP 319 DI 10.1002/ajmg.1320570242 PG 4 WC Genetics & Heredity SC Genetics & Heredity GA RA820 UT WOS:A1995RA82000041 PM 7668354 ER PT J AU LERNER, TJ DARIGO, KL HAINES, JL DOGGETT, NA TASCHNER, PEM DEVOS, N BUCKLER, AJ AF LERNER, TJ DARIGO, KL HAINES, JL DOGGETT, NA TASCHNER, PEM DEVOS, N BUCKLER, AJ TI ISOLATION OF GENES FROM THE BATTEN CANDIDATE REGION USING EXON AMPLIFICATION SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article; Proceedings Paper CT 5th International Conference on Neuronal Ceroid-Lipofuscinoses - Ceroid-Lipofuscinoses: Batten Disease and Allied Disorders CY MAY 19-21, 1994 CL STATEN ISLAND, NY SP NEW YORK STATE INST BASIC RES DEV DISABIL DE EXON AMPLIFICATION; BATTEN DISEASE; CANDIDATE GENES ID NEURONAL CEROID-LIPOFUSCINOSIS; LATE-INFANTILE; DISEASE; CHROMOSOME-16; JUVENILE; MAPS; FORM AB In order to identify genes originating from the Batten disease candidate region, we have used the technique of exon amplification to identify transcribed sequences, This procedure produces trapped exon clones, which can represent single exons or multiple exons spliced together and is an efficient method for obtaining probes for physical mapping and for screening cDNA libraries, The source of DNA for these experiments was a collection of chromosome 16 cosmid contigs isolated by the direct subcloning of region-specific yeast artificial chromosomes (YACs) and hybridization of inter-alu PCR products from these YACs to the flow-sorted Los Alamos chromosome 16 cosmid library. We are now using the resulting exon probes to screen retina and brain cDNA libraries for candidate JNCL genes. (C) 1995 Wiley-Liss, Inc. C1 HARVARD UNIV, SCH MED, DEPT NEUROL, BOSTON, MA 02115 USA. LOS ALAMOS NATL LAB, DIV LIFE SCI, LOS ALAMOS, NM USA. LEIDEN UNIV, DEPT GENET, LEIDEN, NETHERLANDS. UCL, SCH MED, RM GARDINER LABS, LONDON W1N 8AA, ENGLAND. ADELAIDE CHILDRENS HOSP INC, ADELAIDE, SA, AUSTRALIA. SW FDN BIOMED RES, SAN ANTONIO, TX 78284 USA. RP LERNER, TJ (reprint author), MASSACHUSETTS GEN HOSP, MOLEC NEUROGENET UNIT, BLDG 149, 13TH ST, BOSTON, MA 02129 USA. RI Haines, Jonathan/C-3374-2012; Taschner, Peter/J-8853-2014 OI Taschner, Peter/0000-0001-9621-465X FU NINDS NIH HHS [NS30152, NS32099] NR 23 TC 4 Z9 4 U1 0 U2 2 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD JUN 5 PY 1995 VL 57 IS 2 BP 320 EP 323 DI 10.1002/ajmg.1320570243 PG 4 WC Genetics & Heredity SC Genetics & Heredity GA RA820 UT WOS:A1995RA82000042 PM 7668355 ER PT J AU DOOLEY, TP PROBST, P OBERMOELLER, RD SICILIANO, MJ DOGGETT, NA CALLEN, DF MITCHISON, HM MOLE, SE AF DOOLEY, TP PROBST, P OBERMOELLER, RD SICILIANO, MJ DOGGETT, NA CALLEN, DF MITCHISON, HM MOLE, SE TI PHENOL SULFOTRANSFERASES - CANDIDATE GENES FOR BATTEN-DISEASE SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article; Proceedings Paper CT 5th International Conference on Neuronal Ceroid-Lipofuscinoses - Ceroid-Lipofuscinoses: Batten Disease and Allied Disorders CY MAY 19-21, 1994 CL STATEN ISLAND, NY SP NEW YORK STATE INST BASIC RES DEV DISABIL DE PHENOL SULFOTRANSFERASE; CLN3; BATTEN DISEASE; HUMAN CHROMOSOME 16P; CANDIDATE GENE; STP; STM; GENE MAPPING ID NEURONAL CEROID-LIPOFUSCINOSIS; HUMAN CHROMOSOME-16; MINOXIDIL SULFOTRANSFERASE; SEQUENCE-ANALYSIS; LINKAGE ANALYSIS; PHYSICAL MAP; HUMAN BRAIN; LOCUS CLN3; RAT-LIVER; FORM AB Batten disease (juvenile-onset neuronal ceroid lipofuscinosis; JNCL) is an autosomal recessive neurodegenerative disorder, characterized by the cytosomal accumulation of autofluorescent proteolipopigments in neurons and other cell types, The Batten disease gene (CLN3) has not yet been identified, but has been mapped to a small region of human chromosome area 16p12.1-p11.2. We recently reported the fortuitous discovery that the cytosolic phenol sulfotransferase gene (STP) is located within this same interval of chromosome 16p, Since phenol sulfotransferase is expressed in neurons, can sulfate lipophilic phenolic compounds, and is mapped near CLN3, STP is considered as a candidate gene for Batten disease, YAC and cosmid cloning results have further substantiated the close proximity of STP and a highly related sulfotransferase (STM), encoding the catecholamine-preferring enzyme, to the CLN3 region of chromosome 16p, In this report, we summarize some of the recent progress in the identification of two phenol sulfotransferase genes (STP and STM) as positional candidate genes for Batten disease. (C) 1995 Wiley-Liss, Inc. C1 MD ANDERSON CANC CTR, DEPT MOLEC GENET, HOUSTON, TX USA. LOS ALAMOS NATL LAB, DIV LIFE SCI, LOS ALAMOS, NM USA. LOS ALAMOS NATL LAB, CTR HUMAN GENOME STUDIES, LOS ALAMOS, NM 87545 USA. ADELAIDE CHILDRENS HOSP INC, DEPT CYTOGENET & MOLEC GENET, ADELAIDE, SA, AUSTRALIA. UCL, SCH MED, RAYNE INST, DEPT PAEDIAT, LONDON W1N 8AA, ENGLAND. RP DOOLEY, TP (reprint author), SW FDN BIOMED RES, DEPT GENET, POB 28147, SAN ANTONIO, TX 78228 USA. RI Callen, David/G-1975-2012; OI Callen, David/0000-0002-6189-9991; Mole, Sara/0000-0003-4385-4957 FU NINDS NIH HHS [NS28722] NR 42 TC 3 Z9 3 U1 0 U2 0 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD JUN 5 PY 1995 VL 57 IS 2 BP 327 EP 332 DI 10.1002/ajmg.1320570245 PG 6 WC Genetics & Heredity SC Genetics & Heredity GA RA820 UT WOS:A1995RA82000044 PM 7668357 ER PT J AU DELONG, MC MOWBRAY, DJ HOGG, RA SKOLNICK, MS WILLIAMS, JE MEEHAN, K KURTZ, SR OLSON, JM SCHNEIDER, RP WU, MC HOPKINSON, M AF DELONG, MC MOWBRAY, DJ HOGG, RA SKOLNICK, MS WILLIAMS, JE MEEHAN, K KURTZ, SR OLSON, JM SCHNEIDER, RP WU, MC HOPKINSON, M TI BAND-GAP OF COMPLETELY DISORDERED GA0.52IN0.48P SO APPLIED PHYSICS LETTERS LA English DT Article ID VAPOR-PHASE EPITAXY; PHOTOLUMINESCENCE EXCITATION; ORDERED STRUCTURE; GA0.5IN0.5P; GAAS; SPECTROSCOPY; TEMPERATURE; DEPENDENCE; DIFFUSION; MISMATCH C1 POLAROID CORP,CAMBRIDGE,MA 02139. NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NATL TSING HUA UNIV,DEPT ELECT ENGN,HSINCHU 30043,TAIWAN. UNIV SHEFFIELD,DEPT ELECTR & ELECT ENGN,SERC CENT FACIL III V MAT,SHEFFIELD S1 4DU,S YORKSHIRE,ENGLAND. UNIV UTAH,DEPT PHYS,SALT LAKE CITY,UT 84112. RP DELONG, MC (reprint author), UNIV SHEFFIELD,DEPT PHYS,SHEFFIELD S3 7RH,S YORKSHIRE,ENGLAND. RI Hogg, Richard/D-4925-2009; Hopkinson, Mark/H-8239-2012; Skolnick, Maurice/G-7250-2016 OI Hogg, Richard/0000-0002-0781-6809; Skolnick, Maurice/0000-0002-3972-8344 NR 25 TC 37 Z9 37 U1 0 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 5 PY 1995 VL 66 IS 23 BP 3185 EP 3187 DI 10.1063/1.113717 PG 3 WC Physics, Applied SC Physics GA RB347 UT WOS:A1995RB34700034 ER PT J AU LIU, JZ CHANG, IC IRONS, S KLAVINS, P SHELTON, RN SONG, K WASSERMAN, SR AF LIU, JZ CHANG, IC IRONS, S KLAVINS, P SHELTON, RN SONG, K WASSERMAN, SR TI GIANT MAGNETORESISTANCE AT 300 K IN SINGLE-CRYSTALS OF LA-0.65(PBCA)(0.35)MNO3 SO APPLIED PHYSICS LETTERS LA English DT Article C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP LIU, JZ (reprint author), UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616, USA. NR 10 TC 87 Z9 94 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 5 PY 1995 VL 66 IS 23 BP 3218 EP 3220 DI 10.1063/1.113728 PG 3 WC Physics, Applied SC Physics GA RB347 UT WOS:A1995RB34700045 ER PT J AU SAUNDERS, RS AF SAUNDERS, RS TI NEW POLYMERS FROM RING-OPENING METATHESIS POLYMERIZATION OF QUADRICYCLANE ADDUCTS SO MACROMOLECULES LA English DT Article ID ALKYLIDENE COMPLEXES RP SAUNDERS, RS (reprint author), SANDIA NATL LABS, POB 5800, ALBUQUERQUE, NM 87185 USA. NR 21 TC 6 Z9 6 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD JUN 5 PY 1995 VL 28 IS 12 BP 4347 EP 4349 DI 10.1021/ma00116a044 PG 3 WC Polymer Science SC Polymer Science GA RC247 UT WOS:A1995RC24700044 ER PT J AU BRIZARD, AJ KAUFMAN, AN AF BRIZARD, AJ KAUFMAN, AN TI LOCAL MANLEY-ROWE RELATIONS FOR NONEIKONAL WAVE-FIELDS SO PHYSICAL REVIEW LETTERS LA English DT Article RP BRIZARD, AJ (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. OI Brizard, Alain/0000-0002-0192-6273 NR 9 TC 14 Z9 14 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 JUN 5 PY 1995 VL 74 IS 23 BP 4567 EP 4570 DI 10.1103/PhysRevLett.74.4567 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000001 ER PT J AU BAI, JZ BARDON, O BLUM, I BREAKSTONE, A BURNETT, T CHEN, GP CHEN, HF CHEN, J CHEN, SJ CHEN, SM CHEN, Y CHEN, YB CHEN, YQ CHENG, BS COWAN, RF CUI, HC CUI, XZ DING, HL DU, ZZ DUNWOODIE, W FAN, XL FANG, J FERO, M GAO, CS GAO, ML GAO, SQ GAO, WX GRATTON, P GU, JH GU, SD GU, WX GU, YF GUO, YN HAN, SW HAN, Y HARRIS, FA HATANAKA, M HE, J HE, KR HE, M HITLIN, DG HU, GY HU, HB HU, T HU, XQ HUANG, DQ HUANG, YZ IZEN, JM JIA, QP JIANG, CH JIN, Y JONES, L KANG, SH KELSEY, MH KIM, BK LAI, YF LAN, HB LANG, PF LANKFORD, A LI, F LI, J LI, PQ LI, Q LI, RB LI, W LI, WD LI, WG LI, X LI, XN LIN, SZ LIU, HM LIU, JH LIU, Q LIU, RG LIU, Y LIU, ZA LOU, XC LOWERY, B LU, JG MA, AM MA, EC MA, JM MAO, HS MAO, ZP MALCHOW, R MANDELKERN, M MENG, XC NI, HL NIE, J OLSEN, SL OYANG, J PALUSELLI, D PAN, LJ PANETTA, J PORTER, F PRABHAKAR, E QI, ND QUE, YK QUIGLEY, J RONG, G SCHERNAU, M SCHMID, B SCHULTZ, J SHAO, YY SHEN, DL SHEN, H SHEN, XY SHENG, HY SHI, HZ SHI, XR SMITH, A SODERSTROM, E SONG, XF STANDIFIRD, J STOKER, D SUN, F SUN, HS SUN, SJ SYNODINOS, J TAN, YP TANG, SQ TOKI, W TONG, GL TORRENCE, E WANG, F WANG, LS WANG, LZ WANG, M WANG, P WANG, PL WANG, SM WANG, TJ WANG, W WANG, YY WHITTAKER, S WILSON, R WISNIEWSKI, WJ XI, DM XIA, XM XIE, PP XU, DZ XU, RS XU, ZQ XUE, ST YAMAMOTO, R YAN, J YAN, WG YANG, CM YANG, CY YANG, W YAO, HB YE, MH YE, SZ YU, CS YU, CX YU, ZQ YUAN, CZ ZHANG, BY ZHANG, CC ZHANG, DH ZHANG, HL ZHANG, J ZHANG, JW ZHANG, LS ZHANG, SQ ZHANG, Y ZHANG, YY ZHAO, DX ZHAO, JW ZHAO, M ZHAO, PD ZHAO, WR ZHAO, WX ZHENG, JP ZHENG, LS ZHENG, ZP ZHOU, GP ZHOU, HS ZHOU, L ZHOU, XF ZHOU, YH ZHU, QM ZHU, YC ZHU, YS ZHUANG, BA ZIOULAS, G AF BAI, JZ BARDON, O BLUM, I BREAKSTONE, A BURNETT, T CHEN, GP CHEN, HF CHEN, J CHEN, SJ CHEN, SM CHEN, Y CHEN, YB CHEN, YQ CHENG, BS COWAN, RF CUI, HC CUI, XZ DING, HL DU, ZZ DUNWOODIE, W FAN, XL FANG, J FERO, M GAO, CS GAO, ML GAO, SQ GAO, WX GRATTON, P GU, JH GU, SD GU, WX GU, YF GUO, YN HAN, SW HAN, Y HARRIS, FA HATANAKA, M HE, J HE, KR HE, M HITLIN, DG HU, GY HU, HB HU, T HU, XQ HUANG, DQ HUANG, YZ IZEN, JM JIA, QP JIANG, CH JIN, Y JONES, L KANG, SH KELSEY, MH KIM, BK LAI, YF LAN, HB LANG, PF LANKFORD, A LI, F LI, J LI, PQ LI, Q LI, RB LI, W LI, WD LI, WG LI, X LI, XN LIN, SZ LIU, HM LIU, JH LIU, Q LIU, RG LIU, Y LIU, ZA LOU, XC LOWERY, B LU, JG MA, AM MA, EC MA, JM MAO, HS MAO, ZP MALCHOW, R MANDELKERN, M MENG, XC NI, HL NIE, J OLSEN, SL OYANG, J PALUSELLI, D PAN, LJ PANETTA, J PORTER, F PRABHAKAR, E QI, ND QUE, YK QUIGLEY, J RONG, G SCHERNAU, M SCHMID, B SCHULTZ, J SHAO, YY SHEN, DL SHEN, H SHEN, XY SHENG, HY SHI, HZ SHI, XR SMITH, A SODERSTROM, E SONG, XF STANDIFIRD, J STOKER, D SUN, F SUN, HS SUN, SJ SYNODINOS, J TAN, YP TANG, SQ TOKI, W TONG, GL TORRENCE, E WANG, F WANG, LS WANG, LZ WANG, M WANG, P WANG, PL WANG, SM WANG, TJ WANG, W WANG, YY WHITTAKER, S WILSON, R WISNIEWSKI, WJ XI, DM XIA, XM XIE, PP XU, DZ XU, RS XU, ZQ XUE, ST YAMAMOTO, R YAN, J YAN, WG YANG, CM YANG, CY YANG, W YAO, HB YE, MH YE, SZ YU, CS YU, CX YU, ZQ YUAN, CZ ZHANG, BY ZHANG, CC ZHANG, DH ZHANG, HL ZHANG, J ZHANG, JW ZHANG, LS ZHANG, SQ ZHANG, Y ZHANG, YY ZHAO, DX ZHAO, JW ZHAO, M ZHAO, PD ZHAO, WR ZHAO, WX ZHENG, JP ZHENG, LS ZHENG, ZP ZHOU, GP ZHOU, HS ZHOU, L ZHOU, XF ZHOU, YH ZHU, QM ZHU, YC ZHU, YS ZHUANG, BA ZIOULAS, G TI DIRECT MEASUREMENT OF THE PSEUDOSCALAR DECAY CONSTANT, F(D-S) SO PHYSICAL REVIEW LETTERS LA English DT Article ID HEAVY-QUARK; POTENTIAL MODEL; MESON DECAYS; SUM-RULES; B-MESONS; QCD; LATTICE; CHARM; MASS C1 BOSTON UNIV,BOSTON,MA 02215. CALTECH,PASADENA,CA 91125. UNIV SCI & TECHNOL CHINA,HEFEI 230026,PEOPLES R CHINA. COLORADO STATE UNIV,FT COLLINS,CO 80523. MIT,CAMBRIDGE,MA 02139. SHANDONG UNIV,JINAN 250100,PEOPLES R CHINA. STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. UNIV HAWAII,HONOLULU,HI 96822. UNIV CALIF IRVINE,IRVINE,CA 92717. UNIV TEXAS,RICHARDSON,TX 75083. UNIV WASHINGTON,SEATTLE,WA 98195. SUPERCONDUCTING SUPER COLLIDER LAB,DALLAS,TX 75237. RP BAI, JZ (reprint author), INST HIGH ENERGY PHYS,BEIJING 100039,PEOPLES R CHINA. RI Chen, Yu/E-3788-2012 NR 28 TC 50 Z9 54 U1 1 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 JUN 5 PY 1995 VL 74 IS 23 BP 4599 EP 4602 DI 10.1103/PhysRevLett.74.4599 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000010 ER PT J AU MACEK, JH OVCHINNIKOV, SY PASOVETS, SV AF MACEK, JH OVCHINNIKOV, SY PASOVETS, SV TI HIDDEN CROSSING THEORY OF THRESHOLD IONIZATION OF ATOMS BY ELECTRON-IMPACT SO PHYSICAL REVIEW LETTERS LA English DT Article ID 2-ELECTRON ESCAPE; LAW; SYSTEMS C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. AF IOFFE PHYS TECH INST,ST PETERSBURG,RUSSIA. RP MACEK, JH (reprint author), UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996, USA. RI Ovchinnikov, Serguei/C-4994-2014 NR 26 TC 40 Z9 40 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 JUN 5 PY 1995 VL 74 IS 23 BP 4631 EP 4634 DI 10.1103/PhysRevLett.74.4631 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000018 ER PT J AU COVERDALE, CA DARROW, CB DECKER, CD MORI, WB TZENG, KC MARSH, KA CLAYTON, CE JOSHI, C AF COVERDALE, CA DARROW, CB DECKER, CD MORI, WB TZENG, KC MARSH, KA CLAYTON, CE JOSHI, C TI PROPAGATION OF INTENSE SUBPICOSECOND LASER-PULSES THROUGH UNDERDENSE PLASMAS SO PHYSICAL REVIEW LETTERS LA English DT Article ID FIELD-INDUCED IONIZATION; RAMAN-SCATTERING; STIMULATED RAMAN; ELECTROMAGNETIC-WAVES; BACKWARD; ACCELERATION; SIMULATIONS C1 UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,DEPT ELECT ENGN,LOS ANGELES,CA 90024. RP COVERDALE, CA (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 32 TC 162 Z9 163 U1 3 U2 20 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 JUN 5 PY 1995 VL 74 IS 23 BP 4659 EP 4662 DI 10.1103/PhysRevLett.74.4659 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000025 ER PT J AU CHANG, Z CALLEN, JD FREDRICKSON, ED BUDNY, RV HEGNA, CC MCGUIRE, KM ZARNSTORFF, MC AF CHANG, Z CALLEN, JD FREDRICKSON, ED BUDNY, RV HEGNA, CC MCGUIRE, KM ZARNSTORFF, MC TI OBSERVATION OF NONLINEAR NEOCLASSICAL PRESSURE-GRADIENT-DRIVEN TEARING MODES IN TFTR SO PHYSICAL REVIEW LETTERS LA English DT Article C1 UNIV WISCONSIN,DEPT NUCL ENGN & ENGN PHYS,MADISON,WI 53706. RP CHANG, Z (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. NR 18 TC 293 Z9 297 U1 6 U2 21 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 5 PY 1995 VL 74 IS 23 BP 4663 EP 4666 DI 10.1103/PhysRevLett.74.4663 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000026 ER PT J AU WOLF, D WANG, J PHILLPOT, SR GLEITER, H AF WOLF, D WANG, J PHILLPOT, SR GLEITER, H TI PHONON-INDUCED ANOMALOUS SPECIFIC-HEAT OF A NANOCRYSTALLINE MODEL MATERIAL BY COMPUTER-SIMULATION SO PHYSICAL REVIEW LETTERS LA English DT Article ID SIZED CRYSTALLINE MATERIALS C1 KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,W-7500 KARLSRUHE,GERMANY. RP WOLF, D (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 23 TC 64 Z9 64 U1 2 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 JUN 5 PY 1995 VL 74 IS 23 BP 4686 EP 4689 DI 10.1103/PhysRevLett.74.4686 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000032 ER PT J AU WANG, L ZHANG, JK BISHOP, AR AF WANG, L ZHANG, JK BISHOP, AR TI THEORY OF QUANTIZED DYNAMIC CAPACITANCE CHARGING SPECTROSCOPY IN NANOSTRUCTURES SO PHYSICAL REVIEW LETTERS LA English DT Article ID DIMENSIONAL ELECTRON-GAS; PERIODIC CONDUCTANCE OSCILLATIONS; QUANTUM-DOT; MAGNETIC-FIELD; DENSITY; STATES; GAAS C1 OHIO UNIV,DEPT PHYS,ATHENS,OH 45701. RP WANG, L (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 20 TC 4 Z9 4 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 5 PY 1995 VL 74 IS 23 BP 4710 EP 4713 DI 10.1103/PhysRevLett.74.4710 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000038 ER PT J AU RIMBERG, AJ HO, TR CLARKE, J AF RIMBERG, AJ HO, TR CLARKE, J TI SCALING BEHAVIOR IN THE CURRENT-VOLTAGE CHARACTERISTIC OF ONE-DIMENSIONAL AND 2-DIMENSIONAL ARRAYS OF SMALL METALLIC ISLANDS SO PHYSICAL REVIEW LETTERS LA English DT Article ID ULTRASMALL TUNNEL-JUNCTIONS; CHARGE-DENSITY WAVES; 2-DIMENSIONAL ARRAYS; DYNAMICS C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP RIMBERG, AJ (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. RI Rimberg, Alexander/B-8076-2010 NR 18 TC 70 Z9 70 U1 2 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 5 PY 1995 VL 74 IS 23 BP 4714 EP 4717 DI 10.1103/PhysRevLett.74.4714 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000039 ER PT J AU HETTINGER, JD GRAY, KE VEAL, BW PAULIKAS, AP KOSTIC, P WASHBURN, BR TONJES, WC FLEWELLING, AC AF HETTINGER, JD GRAY, KE VEAL, BW PAULIKAS, AP KOSTIC, P WASHBURN, BR TONJES, WC FLEWELLING, AC TI MEASUREMENT OF THE INTRINSIC JOSEPHSON COUPLING ENERGY BETWEEN CU-O BILAYERS IN A HIGH-T-C SUPERCONDUCTOR - POSSIBILITY OF AN UNUSUAL ELECTRON TRANSMISSION RATE SO PHYSICAL REVIEW LETTERS LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; SINGLE-CRYSTALS; CROSSOVER; YBA2CU3O7-DELTA; ANISOTROPY; JUNCTIONS; FILMS; FLOW; GAP RP HETTINGER, JD (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. RI Washburn, Brian/A-1308-2013 NR 27 TC 26 Z9 26 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JUN 5 PY 1995 VL 74 IS 23 BP 4726 EP 4729 DI 10.1103/PhysRevLett.74.4726 PG 4 WC Physics, Multidisciplinary SC Physics GA RB200 UT WOS:A1995RB20000042 ER PT J AU HUANG, YH KOURI, DJ HOFFMAN, DK AF HUANG, YH KOURI, DJ HOFFMAN, DK TI NEW APPROACH TO QUANTUM DYNAMICS - RECURSIVE, AVERAGE-CASE COMPLEXITY, DISTRIBUTED APPROXIMATING FUNCTIONAL METHOD FOR TIME-INDEPENDENT WAVEPACKET FORMS OF SCHRODINGER AND LIPPMANN-SCHWINGER EQUATIONS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID POTENTIAL-ENERGY SURFACE; INTEGRATION; TRANSFORM; SYSTEM; H-3 AB A new approach to quantum dynamics is presented which addresses the fundamental difficulty of exponential growth of computational complexity with the dimensionality of the system. A general recursive polynomial treatment of the time-independent full Green operator, the average-case complexity approach to multi-dimensional integration, and the continuous distributed approximating functional representation of the Hamiltonian are the three ingredients of the approach. Calculations for collinear H + H-2 reactive scattering are presented to illustrate the method. C1 UNIV HOUSTON, DEPT PHYS, HOUSTON, TX 77204 USA. IOWA STATE UNIV SCI & TECHNOL, DEPT CHEM, AMES, IA 50011 USA. IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50011 USA. RP UNIV HOUSTON, DEPT CHEM, HOUSTON, TX 77204 USA. NR 38 TC 5 Z9 5 U1 1 U2 1 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 JUN 2 PY 1995 VL 238 IS 4-6 BP 387 EP 394 DI 10.1016/0009-2614(95)00407-U PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RB391 UT WOS:A1995RB39100027 ER PT J AU KOURI, DJ ZHU, W PARKER, GA HOFFMAN, DK AF KOURI, DJ ZHU, W PARKER, GA HOFFMAN, DK TI ACCELERATION OF CONVERGENCE IN THE POLYNOMIAL-EXPANDED SPECTRAL DENSITY APPROACH TO BOUND AND RESONANCE STATE CALCULATIONS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID INDEPENDENT WAVEPACKET-SCHRODINGER; LIPPMANN-SCHWINGER EQUATIONS; POTENTIAL-ENERGY SURFACE; TRANSFORM; ACCURATE; H-3 AB A procedure is presented for accelerating the convergence of the polynomial-expanded spectral density method for calculating eigenvalues and eigenvectors of a Hamiltonian. After a relatively small number of terms in the expansion, one calculates the scalar spectral function, whose plot gives information on the distribution of the eigenvalues contained in the initial wavepacket. The vectors produced by H acting on the initial vector, combined with the energy-dependent coefficients, are used to construct 'purified' and 'neighborhood basis vectors', which are used to restart the expansion and to diagonalize the Hamiltonian. C1 UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP KOURI, DJ (reprint author), UNIV HOUSTON,DEPT CHEM,HOUSTON,TX 77204, USA. RI Parker, Gregory/A-4327-2009 OI Parker, Gregory/0000-0002-0225-8887 NR 25 TC 47 Z9 47 U1 2 U2 2 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 JUN 2 PY 1995 VL 238 IS 4-6 BP 395 EP 403 DI 10.1016/0009-2614(95)00408-V PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RB391 UT WOS:A1995RB39100028 ER PT J AU MELCHIOR, R QUIGLEY, JP ARMSTRONG, PB AF MELCHIOR, R QUIGLEY, JP ARMSTRONG, PB TI ALPHA(2)-MACROGLOBULIN-MEDIATED CLEARANCE OF PROTEASES FROM THE PLASMA OF THE AMERICAN HORSESHOE-CRAB, LIMULUS-POLYPHEMUS SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID RECEPTOR-MEDIATED ENDOCYTOSIS; PROTEIN ALPHA-2-MACROGLOBULIN RECEPTOR; ALPHA-MACROGLOBULIN COMPLEXES; BAIT REGION; FAST FORMS; BINDING; TRYPSIN; BLOOD; HEPATOCYTES; HEMOLYMPH AB Because proteases free in the body are damaging to the tissues, animals have evolved various agents for their inactivation and clearance. Mammals, for instance, have a diverse array of active site protease inhibitors in the plasma, in addition, mammals have alpha(2)-macroglobulin (alpha(2)M), which binds active proteases, and the alpha(2)M-protease complex is then cleared from the plasma by a receptor-mediated endocytotic process. (alpha(2)M is also present in the plasma of many invertebrates, and in the American horseshoe crab, Limulus polyphemus, it is the only protease inhibitor in the plasma. To search for a clearance process for proteases in Limulus, fluerescein isothiocyanate (FITC)-labeled proteins were injected into the blood, and the fluorescence in the plasma and associated with the blood cells was determined. FITC-labeled trypsin was cleared with an initial mixing period (0-10 min) and a rapid clearance period (10-30 min), followed by the reappearance of FITC in the plasma (45-90 min). Before and during the clearance process, the labeled trypsin was associated with a complex having a molecular mass identical to that of Limubus alpha(2)M, and that was precipitated by antibodies directed against Limubus alpha(2)M. The fluoresceinated material that reappeared in the plasma after 45 min was of low molecular mass (<10 kDa) and thus appears to have experienced degradation. The clearance of trypsin requires its protease activity, since phenylmethylsulfonyl fluoride-inactivated, FITC-labeled trypsin was cleared only very slowly if at all (t1/2 > 180 min). FITC-labeled, trypsin-reacted Limubus alpha(2)M was cleared rapidly from the plasma of Limubus, whereas FITC-labeled, native Limubus alpha(2)M persisted undiminished in excess of 400 min. The blood cells of Limubus bound FITC-labeled trypsin-reacted Limubus alpha(2)M, and the peak of recovery from the blood cells coincided with the minimum concentration of FITC-labeled protein in the plasma, suggesting that the blood cells participate in the clearance of alpha(2)M-protease complex from the plasma. Thus, we have demonstrated the existence of a clearance pathway in Limubus that operates selectively on enzymatically active proteases and have shown that Limulus alpha(2)M is the probable agent for protease clearance. This is the first documentation of a protease clearance pathway in invertebrates and represents the first identified physiological function for alpha(2)M in invertebrates. C1 LAWRENCE LIVERMORE NATL LAB,DEPT MOLEC & CELL BIOL,DAVIS,CA 95616. MARINE BIOL LAB,WOODS HOLE,MA 02543. SUNY STONY BROOK,HLTH SCI CTR,DEPT PATHOL,STONY BROOK,NY 11794. NR 79 TC 36 Z9 38 U1 0 U2 1 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD JUN 2 PY 1995 VL 270 IS 22 BP 13496 EP 13502 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RB439 UT WOS:A1995RB43900080 PM 7539428 ER PT J AU BOLDUC, JM DYER, DH SCOTT, WG SINGER, P SWEET, RM KOSHLAND, DE STODDARD, BL AF BOLDUC, JM DYER, DH SCOTT, WG SINGER, P SWEET, RM KOSHLAND, DE STODDARD, BL TI MUTAGENESIS AND LAUE STRUCTURES OF ENZYME INTERMEDIATES - ISOCITRATE DEHYDROGENASE SO SCIENCE LA English DT Article ID X-RAY CRYSTALLOGRAPHY; PROTEIN CRYSTALLOGRAPHY; DIFFRACTION; TIME; MECHANISM; PHOTOGRAPHS; HYDROLYSIS; BINDING AB Site-directed mutagenesis and Laue diffraction data to 2.5 Angstrom resolution were used to solve the structures of two sequential intermediates formed during the catalytic actions of isocitrate dehydrogenase. Both intermediates are distinct from the enzyme-substrate and enzyme-product complexes. Mutation of key catalytic residues changed the rate determining steps so that protein and substrate intermediates within the overall reaction pathway could be visualized. C1 MRC,MOLEC BIOL LAB,CAMBRIDGE CB2 2QH,ENGLAND. BROOKHAVEN NATL LABS,DEPT BIOL STRUCT,UPTON,NY 11973. UNIV CALIF BERKELEY,DEPT MOLEC & CELL BIOL,BERKELEY,CA 94720. RP BOLDUC, JM (reprint author), FRED HUTCHINSON CANC RES CTR,PROGRAM STRUCT BIOL,DIV BASIC SCI,1124 COLUMBIA ST A3-023,SEATTLE,WA 98104, USA. FU NIGMS NIH HHS [GM49857] NR 24 TC 103 Z9 106 U1 3 U2 9 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD JUN 2 PY 1995 VL 268 IS 5215 BP 1312 EP 1318 DI 10.1126/science.7761851 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RB198 UT WOS:A1995RB19800028 PM 7761851 ER PT J AU GOSSE, JC KLEIN, J EVENSON, EB LAWN, B MIDDLETON, R AF GOSSE, JC KLEIN, J EVENSON, EB LAWN, B MIDDLETON, R TI BE-10 DATING OF THE DURATION AND RETREAT OF THE LAST PINEDALE GLACIAL SEQUENCE SO SCIENCE LA English DT Article ID BULL LAKE; AGE; DEPOSITS AB Accurate terrestrial glacial chronologies are needed for comparison with the marine record to establish the dynamics of global climate change during transitions from glacial to interglacial regimes. Cosmogenic beryllium-10 measurements in the Wind River Range indicate that the last glacial maximum (marine oxygen isotope stage 2) was achieved there by 21,700 +/- 700 beryllium-10 years and lasted 5900 years. Ages of a sequence of recessional moraines and striated bedrock surfaces show that the initial deglaciation was rapid and that the entire glacial system retreated 33 kilometers to the cirque basin by 12,100 +/- 500 beryllium-10 years. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104. RP GOSSE, JC (reprint author), LEHIGH UNIV,BETHLEHEM,PA 18015, USA. RI Gosse, John/B-4934-2012 NR 38 TC 158 Z9 163 U1 0 U2 6 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD JUN 2 PY 1995 VL 268 IS 5215 BP 1329 EP 1333 DI 10.1126/science.268.5215.1329 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA RB198 UT WOS:A1995RB19800033 PM 17778979 ER PT J AU SEABORG, GT AF SEABORG, GT TI TRANSURANIUM ELEMENTS - PAST, PRESENT, AND FUTURE SO ACCOUNTS OF CHEMICAL RESEARCH LA English DT Review ID DISCOVERY C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. RP SEABORG, GT (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. NR 25 TC 5 Z9 5 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0001-4842 J9 ACCOUNTS CHEM RES JI Accounts Chem. Res. PD JUN PY 1995 VL 28 IS 6 BP 257 EP 264 DI 10.1021/ar00054a003 PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA RD293 UT WOS:A1995RD29300003 ER PT J AU SONG, SG GRAY, GT AF SONG, SG GRAY, GT TI STRUCTURAL INTERPRETATION OF THE NUCLEATION AND GROWTH OF DEFORMATION TWINS IN ZR AND TI .1. APPLICATION OF THE COINCIDENCE SITE LATTICE (CSL) THEORY TO TWINNING PROBLEMS IN HCP STRUCTURES SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID PARTIAL DISLOCATIONS; SILICON; SLIP AB A step-wise nucleation and growth mechanism based on the coincidence site lattice (CSL) theory is proposed for deformation twinning in h.c.p. structures. Lattice transformation during twinning is accomplished by a coordinated movement of a large number of atoms between two lattice match planes from the matrix to twin positions rather than a layer by layer movement through twinning dislocations as proposed for twinning dislocation theories. The sidewise propagation and thickening of a twin lamella proceeds in a step-wise manner with lattice match planes being the coherent boundaries between the matrix and twins. This model predicts that twinning in h.c.p. lattices can occur at a high velocity close to the sound speed, which is impossible according to twinning dislocation theories. The proposed mechanism is also consistent with other observations such as lack of critical-resolved-shear-stress for twinning, emissary dislocations, and insensitivity to temperature. Dislocation reactions may be involved in twinning although they are, at high stresses, not required. RP LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. NR 61 TC 68 Z9 69 U1 3 U2 39 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD JUN PY 1995 VL 43 IS 6 BP 2325 EP 2337 DI 10.1016/0956-7151(94)00433-1 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QZ882 UT WOS:A1995QZ88200017 ER PT J AU SONG, SG GRAY, GT AF SONG, SG GRAY, GT TI STRUCTURAL INTERPRETATION OF THE NUCLEATION AND GROWTH OF DEFORMATION TWINS IN ZR AND TI .2. TEM STUDY OF TWIN MORPHOLOGY AND DEFECT REACTIONS DURING TWINNING SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID PARTIAL DISLOCATIONS; TITANIUM; SILICON AB A TEM study of mechanical twinning in Ti and Zr was performed. A large number of [0001]-dislocations which are rarely seen in the matrix, and a new type of stacking fault were found within deformation twins in both materials. Matrix dislocations were observed to actively interact with the tips of twin embryos and step ledges of growing twin lamellae. Twin embryos bounded by straight coherent and inclined semi-coherent boundaries were observed. These results as well as the morphological variation of twin lamellae during deformation do not agree with twinning dislocation theories but support a step-wise nucleation and growth mechanism proposed for deformation twinning in h.c.p. structures. Extended discussions are provided to address unanswered questions in the literature concerning deformation twinning. RP SONG, SG (reprint author), LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. NR 34 TC 72 Z9 75 U1 3 U2 27 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD JUN PY 1995 VL 43 IS 6 BP 2339 EP 2350 DI 10.1016/0956-7151(94)00434-X PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QZ882 UT WOS:A1995QZ88200018 ER PT J AU JIMENEZMELENDO, M DEARELLANOLOPEZ, AR DOMINGUEZRODRIGUEZ, A GORETTA, KC ROUTBORT, JL AF JIMENEZMELENDO, M DEARELLANOLOPEZ, AR DOMINGUEZRODRIGUEZ, A GORETTA, KC ROUTBORT, JL TI DIFFUSION-CONTROLLED PLASTIC-DEFORMATION OF YBA2CU3OX SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID COMPRESSIVE CREEP; TRACER DIFFUSION; OXYGEN; TEMPERATURE; SUPERCONDUCTORS; POLYCRYSTALS; OXIDES; FLOW; NIO AB Steady-state creep experiments have been performed on polycrystalline YBa2Cu3Ox in the temperature range of 850-970 degrees C, as a function of oxygen partial pressure (P-O2). The results, when combined with a reanalysis of previous deformation studies, indicate that contrary to the previous conclusion that the activation energy was a function of P-O2, there are two different temperature regimes characterized by P-O2-independent activation energies of 675 and 1100 kJ/mol for low and high temperatures, respectively. This is interpreted in terms of two independently operating rate-controlling mechanisms: grain-boundary diffusion and lattice diffusion. Diffusion coefficients have been derived by comparing experimental data and theoretical models. C1 ARGONNE NATL LAB, DIV ENERGY TECHNOL, ARGONNE, IL 60439 USA. RP JIMENEZMELENDO, M (reprint author), UNIV SEVILLA, DEPT FIS MAT CONDENSADA, E-41080 SEVILLE, SPAIN. OI Jimenez Melendo, Manuel/0000-0002-8423-5928; R. de Arellano Lopez, Antonio/0000-0002-7443-0244; Dominguez-Rodriguez, Arturo/0000-0003-1598-5669 NR 32 TC 28 Z9 28 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD JUN PY 1995 VL 43 IS 6 BP 2429 EP 2434 DI 10.1016/0956-7151(94)00447-1 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QZ882 UT WOS:A1995QZ88200026 ER PT J AU SIKKA, VK DEEVI, SC VOUGHT, JD AF SIKKA, VK DEEVI, SC VOUGHT, JD TI EXO-MELT - A COMMERCIALLY VIABLE PROCESS SO ADVANCED MATERIALS & PROCESSES LA English DT Article C1 PHILIP MORRIS INC, RES CTR, RICHMOND, VA 23234 USA. RP SIKKA, VK (reprint author), OAK RIDGE NATL LAB, DIV MET & CERAM, POB 2008, OAK RIDGE, TN 37831 USA. NR 0 TC 16 Z9 16 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 0026-0665 J9 ADV MATER PROCESS JI Adv. Mater. Process. PD JUN PY 1995 VL 147 IS 6 BP 29 EP 31 PG 3 WC Materials Science, Multidisciplinary SC Materials Science GA RT155 UT WOS:A1995RT15500005 ER PT J AU BALCH, T BOONE, G COLLINS, T FORBES, H MACKENZIE, D SANTAMATIA, JC AF BALCH, T BOONE, G COLLINS, T FORBES, H MACKENZIE, D SANTAMATIA, JC TI IO, GANYMEDE, AND CALLISTO - A MULTIAGENT ROBOT TRASH-COLLECTING TEAM SO AI MAGAZINE LA English DT Article ID MOBILE ROBOT; NAVIGATION; SCHEMA AB The Georgia Institute of Technology won the Office Cleanup event at the 1994 AAAI Robot Competition and Exhibition with a multirobot cooperating team. This article describes the design and implementation of these reactive trash-collecting robots, including details of multiagent cooperation, color vision for the detection of perceptual object classes, temporal sequencing of behaviors for task completion, and a language for specifying motor schema-based robot behaviors. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. GEORGIA INST TECHNOL,COLL COMP,ATLANTA,GA 30332. RP BALCH, T (reprint author), GEORGIA INST TECHNOL,INFORMAT TECHNOL & TELECOMUN LAB,ATLANTA,GA 30332, USA. NR 8 TC 22 Z9 23 U1 0 U2 0 PU AMER ASSOC ARTIFICIAL INTELL PI MENLO PK PA 445 BURGESS DRIVE, MENLO PK, CA 94025-3496 SN 0738-4602 J9 AI MAG JI AI Mag. PD SUM PY 1995 VL 16 IS 2 BP 39 EP 51 PG 13 WC Computer Science, Artificial Intelligence SC Computer Science GA RE630 UT WOS:A1995RE63000006 ER PT J AU WILLIAMS, PT DREON, DM KRAUSS, RM AF WILLIAMS, PT DREON, DM KRAUSS, RM TI EFFECTS OF DIETARY-FAT ON HIGH-DENSITY-LIPOPROTEIN SUBCLASSES ARE INFLUENCED BY BOTH APOLIPOPROTEIN-E ISOFORMS AND LOW-DENSITY-LIPOPROTEIN SUBCLASS PATTERNS SO AMERICAN JOURNAL OF CLINICAL NUTRITION LA English DT Article DE HIGH-DENSITY LIPOPROTEINS; DIETARY FAT; HIGH-CARBOHYDRATE DIET; APOLIPOPROTEIN E ISOFORMS; LOW-DENSITY-LIPOPROTEIN SUBCLASS PATTERN; GRADIENT GEL ELECTROPHORESIS; ADIPOSITY; INSULIN; FATTY ACIDS; LIPASE ID GRADIENT GEL-ELECTROPHORESIS; CORONARY-ARTERY DISEASE; PARTICLE-SIZE DISTRIBUTION; A-I; CHOLESTEROL LEVELS; HUMAN-PLASMA; TRANSPORT RATES; HDL SUBCLASSES; ALCOHOL INTAKE; E POLYMORPHISM AB We examined the effects of replacing dietary fat with carbohydrates on high-density-lipoprotein (HDL) subclasses as measured by nondenaturing polyacrylamide-gradient-gel electrophoresis. One hundred five men received a 6-wk low-fat diet (24% of total energy) and a 6-wk high-fat diet (46% of energy) in a crossover design. Absorbency of protein stain was measured within five HDL subclasses: HDL(3c) (7.2-7.8 nm), HDL(3b) (7.8-8.2 nm), HDL(3a) (8.2-8.9 nm), HDL(2a) (8.8-9.7 nm), and HDL(2b) (9.7-12 nm). The low-density-lipoprotein-(LDL) subclass pattern was determined by gradient-gel electrophoresis, with pattern B men defined as having an LDL-predominant peak diameter less than or equal to 25.5 mn and an LDL distribution skewed toward larger size particles. On the high-fat diet, 18 men exhibited LDL-subclass pattern B and 87 men exhibited the alternative LDL pattern A. Twelve men had the apolipoprotein (apo) epsilon 2. allele. Replacing dietary fat with carbohydrates 1) significantly decreased HDL(3a), HDL(2a), and HDL(2b); 2) reduced HDL(2b) significantly more in pattern A than in pattern B men; and 3) increased plasma HDL(3b), concentrations significantly more in those men with the epsilon 2 allele. Our results suggest that unfavorable HDL changes were significantly more Likely to occur in men who had LDL-subclass pattern A or the apo epsilon 2 allele than in men who had pattern B or lacked the epsilon 2 allele. RP WILLIAMS, PT (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV LIFE SCI,BLDG 934,BERKELEY,CA 94720, USA. FU NHLBI NIH HHS [HL-02183, HL-52617] NR 60 TC 21 Z9 21 U1 0 U2 1 PU AMER SOC CLIN NUTRITION INC PI BETHESDA PA 9650 ROCKVILLE PIKE SUBSCRIPTIONS, RM L-2310, BETHESDA, MD 20814-3998 SN 0002-9165 J9 AM J CLIN NUTR JI Am. J. Clin. Nutr. PD JUN PY 1995 VL 61 IS 6 BP 1234 EP 1240 PG 7 WC Nutrition & Dietetics SC Nutrition & Dietetics GA RB110 UT WOS:A1995RB11000009 PM 7762523 ER PT J AU VOGEL, JS TURTELTAUB, KW FINKEL, R NELSON, DE AF VOGEL, JS TURTELTAUB, KW FINKEL, R NELSON, DE TI ACCELERATOR MASS-SPECTROMETRY - ISOTOPE QUANTIFICATION AT ATTOMOLE SENSITIVITY SO ANALYTICAL CHEMISTRY LA English DT Article ID METEOR CRATER; RADIOCARBON; ARIZONA; BE-10; AL-26; C-14; AGE C1 SIMON FRASER UNIV,BURNABY,BC,CANADA. RP VOGEL, JS (reprint author), LAWRENCE LIVERMORE NATL LAB,CTR ACCELERATOR MASS SPECTROMETRY,BOX 808,L-397,LIVERMORE,CA 94550, USA. FU NCI NIH HHS [CA55861-01]; NIEHS NIH HHS [ES04705-07] NR 29 TC 61 Z9 61 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD JUN 1 PY 1995 VL 67 IS 11 BP A353 EP A359 DI 10.1021/ac00107a001 PG 7 WC Chemistry, Analytical SC Chemistry GA RA091 UT WOS:A1995RA09100002 PM 9306729 ER PT J AU LADERMAN, SS FISCHERCOLBRIE, A SHIMAZAKI, A MIYAZAKI, K BRENNAN, S TAKAKURA, N PIANETTA, P KORTRIGHT, JB AF LADERMAN, SS FISCHERCOLBRIE, A SHIMAZAKI, A MIYAZAKI, K BRENNAN, S TAKAKURA, N PIANETTA, P KORTRIGHT, JB TI HIGH-SENSITIVITY TOTAL-REFLECTION X-RAY-FLUORESCENCE SPECTROSCOPY OF SILICON-WAFERS USING SYNCHROTRON-RADIATION SO ANALYTICAL SCIENCES LA English DT Article; Proceedings Paper CT 5th Workshop on Total Reflection X-Ray Fluorescence Spectroscopy and Related Spectroscopical Methods CY OCT 07-19, 1994 CL TSUKUBA, JAPAN DE TOTAL REFLECTION X-RAY FLUORESCENCE (TXRF, TRXRF); SYNCHROTRON RADIATION; SILICON; VLSI; ULSI; WAFER CLEANING; MICROCONTAMINATION; SYNTHETIC MULTILAYER; MULTILAYER X-RAY MONOCHROMATOR AB We explored total reflection X-ray fluorescence spectroscopy (TXRF) with a synchrotron source to achieve high sensitivities to surface metals on silicon wafers. Most recently, we directly demonstrated a sensitivity of 3X10(8) atoms/cm(2) for third-row transition metal elements. The configuration appears to be capable of high sensitivities for a wide range of elements. C1 TOSHIBA CO LTD,DEPT INTEGRATED CIRCUIT ADV PROC ENGN,KAWASAKI,KANAGAWA 210,JAPAN. STANFORD LINEAR ACCELERATOR CTR,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94309. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR XRAY OPT,BERKELEY,CA 94720. RP LADERMAN, SS (reprint author), HEWLETT PACKARD CORP,HEWLETT PACKARD LABS,3500 DEER CREEK RD,PALO ALTO,CA 94304, USA. NR 10 TC 7 Z9 7 U1 0 U2 2 PU JAPAN SOC ANALYTICAL CHEM PI TOKYO PA 26-2 NISHIGOTANDA 1 CHOME SHINAGAWA-KU, TOKYO 141, JAPAN SN 0910-6340 J9 ANAL SCI JI Anal. Sci. PD JUN PY 1995 VL 11 IS 3 BP 515 EP 518 DI 10.2116/analsci.11.515 PG 4 WC Chemistry, Analytical SC Chemistry GA RD292 UT WOS:A1995RD29200034 ER PT J AU STROBEL, GL LONDON, RA EDER, DC AF STROBEL, GL LONDON, RA EDER, DC TI SYSTEMATICS OF INNER-SHELL PHOTOIONIZATION X-RAY LASERS WITH CONSTANT PUMP RATES SO APPLIED PHYSICS B-LASERS AND OPTICS LA English DT Article AB Population-rate equations are analytically solved for constant pump rates. Conditions for population inversions are developed for this simplified case. Numbers appropriate for inner-shell photo-ionization of magnesium and neon are used. These allow back-of-the envelope calculations for predicting lasing duration. Pump-rate thresholds are also given which permit lasing for the duration of the pumping. Blackbody-source temperatures associated with such pump rates are calculated. A method of using the solution of the small-signal population-rate equations to determine the saturated intensity when the lower lasing level has a decay channel is given. This method is applied to the case of constant pump rates. An analytic expression for the saturated intensity is developed for this case. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP STROBEL, GL (reprint author), UNIV GEORGIA,DEPT PHYS,ATHENS,GA 30602, USA. NR 9 TC 12 Z9 12 U1 1 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0946-2171 J9 APPL PHYS B-LASERS O JI Appl. Phys. B-Lasers Opt. PD JUN PY 1995 VL 60 IS 6 BP 513 EP 518 DI 10.1007/BF01080929 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA RD295 UT WOS:A1995RD29500003 ER PT J AU LIU, JC MAO, S NELSON, WR KASE, KR IPE, NE AF LIU, JC MAO, S NELSON, WR KASE, KR IPE, NE TI ESTIMATION OF THE RADIATION-DOSE TO THE ELECTRONIC EQUIPMENT INSIDE THE PEP-II TUNNEL SO APPLIED RADIATION AND ISOTOPES LA English DT Article; Proceedings Paper CT 6th International Symposium on Radiation Physics (ISRP-6) CY 1994 CL RABAT, MOROCCO SP Int Radiat Phys Soc, Fac Sci Rabat, Morocco, Lab Phys Nucl, Morocco, Off Natl Elect, Morocco, Off Cherifien Phosphates, Morocco, Ctr Natl Energie Sci & Tech Nucl, Morocco, Assoc Ingenieurs Genie Atom Maroc RP LIU, JC (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD JUN-JUL PY 1995 VL 46 IS 6-7 BP 473 EP 474 DI 10.1016/0969-8043(95)00056-9 PG 2 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA RJ946 UT WOS:A1995RJ94600029 ER PT J AU KLEMIC, G AF KLEMIC, G TI USDOES INTERNATIONAL INTERCOMPARISONS OF ENVIRONMENTAL DOSIMETERS SO APPLIED RADIATION AND ISOTOPES LA English DT Article; Proceedings Paper CT 6th International Symposium on Radiation Physics (ISRP-6) CY 1994 CL RABAT, MOROCCO SP Int Radiat Phys Soc, Fac Sci Rabat, Morocco, Lab Phys Nucl, Morocco, Off Natl Elect, Morocco, Off Cherifien Phosphates, Morocco, Ctr Natl Energie Sci & Tech Nucl, Morocco, Assoc Ingenieurs Genie Atom Maroc RP KLEMIC, G (reprint author), US DOE,ENVIRONM MEASUREMENTS LAB,376 HUDSON ST,NEW YORK,NY 10014, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD JUN-JUL PY 1995 VL 46 IS 6-7 BP 515 EP 516 DI 10.1016/0969-8043(95)00077-1 PG 2 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA RJ946 UT WOS:A1995RJ94600050 ER PT J AU GUESSOUS, A SCHULZ, N BENTALEB, M AHMED, I DURELL, JL KHAZROUNI, S LIDEN, F LISTER, CJ LUBKIEWICZ, E MORSS, LR NASH, KL PEARSON, CJ PHILLIPS, WR SHANNON, J VARLEY, BJ WILLIAMS, CW AF GUESSOUS, A SCHULZ, N BENTALEB, M AHMED, I DURELL, JL KHAZROUNI, S LIDEN, F LISTER, CJ LUBKIEWICZ, E MORSS, LR NASH, KL PEARSON, CJ PHILLIPS, WR SHANNON, J VARLEY, BJ WILLIAMS, CW TI INVESTIGATION OF HIGH-SPIN STATES IN THE NEUTRON-RICH MO-106 NUCLEUS SO APPLIED RADIATION AND ISOTOPES LA English DT Article; Proceedings Paper CT 6th International Symposium on Radiation Physics (ISRP-6) CY 1994 CL RABAT, MOROCCO SP Int Radiat Phys Soc, Fac Sci Rabat, Morocco, Lab Phys Nucl, Morocco, Off Natl Elect, Morocco, Off Cherifien Phosphates, Morocco, Ctr Natl Energie Sci & Tech Nucl, Morocco, Assoc Ingenieurs Genie Atom Maroc C1 UNIV STRASBOURG 1,STRASBOURG,FRANCE. FAC SCI KENITRA,APPL PHYS LAB,KENITRA,MOROCCO. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV MANCHESTER,DEPT PHYS,MANCHESTER M13 9PL,LANCS,ENGLAND. JAGIELLONIAN UNIV,KRAKOW,POLAND. RP GUESSOUS, A (reprint author), CTR RECH NUCL,STRASBOURG,FRANCE. NR 5 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD JUN-JUL PY 1995 VL 46 IS 6-7 BP 549 EP 550 DI 10.1016/0969-8043(95)00085-2 PG 2 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA RJ946 UT WOS:A1995RJ94600059 ER PT J AU LAMOUREUX, MM HUTTON, JC STYRIS, DL GORDON, RL AF LAMOUREUX, MM HUTTON, JC STYRIS, DL GORDON, RL TI NONINVASIVE QUANTITATIVE CHROMIUM(III) SPECIATION IN NEAT SOLID MIXTURES BY EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE SPECTROSCOPY SO APPLIED SPECTROSCOPY LA English DT Article DE X-RAY ABSORPTION; ELEMENTAL SPECIATION; EXAFS; CHROMIUM(III); SOLID ANALYSIS ID EXAFS AB A procedure that uses extended X-ray absorption fine structure (EXAFS) spectroscopy for quantitative chromium(III) speciation in neat solid mixtures is described. The procedure uses the full, filtered EXAFS, e.g., 4 less than or equal to k less than or equal to 12 Angstrom(-1), rather than the smaller k-range associated with a single coordination sphere. Concentration is determined by a simple correlation of full, filtered EXAFS of standards with full, filtered EXAFS of mixtures. Under optimized conditions, calibration curves for mixtures of Cr2O3 and Cr(NO3)(3) . 9H(2)O have slopes of 1.002, respective intercepts of -0.7% and 0.5%, and correlation coefficients of 0.9991. Fluorescence EXAFS from mixtures must be compared to fluorescence EXAFS from standards, and the matrices and thicknesses of standards and mixtures must be closely matched. Transmission EXAFS of standards must be obtained to correct for self-absorption effects. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 23 TC 5 Z9 5 U1 0 U2 0 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD JUN PY 1995 VL 49 IS 6 BP 808 EP 812 DI 10.1366/0003702953964471 PG 5 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA RG354 UT WOS:A1995RG35400015 ER PT J AU LI, QB YEUNG, ES AF LI, QB YEUNG, ES TI EVALUATION OF THE POTENTIAL OF A CHARGE-INJECTION DEVICE FOR DNA-SEQUENCING BY MULTIPLEXED CAPILLARY ELECTROPHORESIS SO APPLIED SPECTROSCOPY LA English DT Article DE CID DETECTION; DNA SEQUENCING; CAPILLARY ELECTROPHORESIS; LASERS; FLUORESCENCE ID FLUORESCENCE DETECTION; ZONE ELECTROPHORESIS; COUPLED DEVICE AB Despite the rapid growth in the use of imaging detectors in spectroscopy, the charge-injection device (CID) has unique features that have not been fully exploited. The advantages of the CID as a two-dimensional array detector for laser-induced fluorescence detection in highly multiplexed capillary electrophoresis are evaluated. In such a system, the CID maintains both high sensitivity and high sampling rate, which are usually difficult to achieve simultaneously with other array detectors. Applying the electronic windowing function significantly improves the scan rate and greatly reduces the volume of data generated. With 1-s exposure time and 488-nm excitation, the detection limit of the system is 10(-12) M fluorescein with the device cryogenically cooled and 10(-11) M fluorescein at ambient temperature. The low dark current of the CID imager allows operation at room temperature without significantly affecting sensitivity when combined with moderate laser powers. We demonstrate that the CID is well suited for high-speed, high-throughput DNA sequencing based on multiplexed capillary electrophoresis with on-column laser-induced fluorescence detection. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 20 TC 20 Z9 20 U1 0 U2 0 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD JUN PY 1995 VL 49 IS 6 BP 825 EP 833 DI 10.1366/0003702953964598 PG 9 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA RG354 UT WOS:A1995RG35400018 ER PT J AU CREMERS, DA BAREFIELD, JE KOSKELO, AC AF CREMERS, DA BAREFIELD, JE KOSKELO, AC TI REMOTE ELEMENTAL ANALYSIS BY LASER-INDUCED BREAKDOWN SPECTROSCOPY USING A FIBEROPTIC CABLE SO APPLIED SPECTROSCOPY LA English DT Note DE LASER-INDUCED BREAKDOWN SPECTROSCOPY; FIBEROPTIC CABLE; ELEMENTAL ANALYSIS ID TRANSMISSION RP CREMERS, DA (reprint author), LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545, USA. NR 9 TC 116 Z9 122 U1 1 U2 6 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD JUN PY 1995 VL 49 IS 6 BP 857 EP 860 DI 10.1366/0003702953964589 PG 4 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA RG354 UT WOS:A1995RG35400022 ER PT J AU Balachandran, U Youngdahl, CA Lanagan, MT Dorris, SE Picciolo, JJ Cluff, J Brent, T Marinelli, M Fisher, B Winandy, P Wenzlaff, J Askew, T Niemann, R Poeppel, RB Nakade, M Hara, T AF Balachandran, U Youngdahl, CA Lanagan, MT Dorris, SE Picciolo, JJ Cluff, J Brent, T Marinelli, M Fisher, B Winandy, P Wenzlaff, J Askew, T Niemann, R Poeppel, RB Nakade, M Hara, T TI Application of sinter-forged Bi-2223 bars to 1500-A AC power utility service as high-frequency current leads in a 77-4 K temperature gradient SO APPLIED SUPERCONDUCTIVITY LA English DT Article ID SUPERCONDUCTORS AB Two assemblies of Pb-BSCCO 2223 superconductor bars were produced for use in ac connections between utility system lines at room temperature and a fault-current limiter operating at 4 K. Each assembly consisting of four parallel bars arranged within a IDD mm-diameter boundary, delivered 1500 A (peak), 50-60 Hz ac through the 77-4 K range of the temperature gradient while dissipating < 0.3 W. The sinter-forged bars displayed dc critical current densities of 950-1300 A cm(-2) at 77 K and > 5000 A cm(-2) at 4 K; magnetic field sensitivity was relatively small. Although thermal conductivity tests showed values much higher than those found in the literature for polycrystalline Pb-BSCCO 2223 made by other processes, this undesirable result was counterbalanced by the relatively high values of critical current, which enabled the use of bars with smaller cross-sectional areas. Typical 50-Hz ac power losses at 77 K in each bar (with a cross-sectional area of 0.54 cm(2)) were 1 mW cm(-1) of length at 310 A and 1.75 mW cm(-1) at 375 A. Losses were much smaller at 4 K. Bars were 25 cm long, including ends that carried silver contacts sinter forged to the ceramic, with a 21 cm silver-free length in the thermal gradient between the fixed-temperature terminals. Thermal efficiency of the assemblies was assessed by helium boiloff tests. C1 TOKYO ELECT POWER CO LTD,TOKYO 182,JAPAN. RP Balachandran, U (reprint author), ARGONNE NATL LAB,DIV ENERGY TECHNOL,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 12 TC 3 Z9 3 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0964-1807 J9 APPL SUPERCOND JI Appl. Supercond. PD JUN PY 1995 VL 3 IS 6 BP 313 EP 320 DI 10.1016/0964-1807(95)00076-3 PG 8 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA UC187 UT WOS:A1995UC18700002 ER PT J AU MAGNI, E SOMORJAI, GA AF MAGNI, E SOMORJAI, GA TI PREPARATION OF A MODEL ZIEGLER-NATTA CATALYST SURFACE SCIENCE STUDIES OF MAGNESIUM-CHLORIDE THIN-FILM DEPOSITED ON GOLD AND ITS INTERACTION WITH TITANIUM CHLORIDE SO APPLIED SURFACE SCIENCE LA English DT Article AB The preparation and surface science study of a magnesium chloride/titanium chloride system, grown in the form of a thin film on an inert substrate under ultra-high vacuum conditions is reported. The aim of the authors is to build a model catalyst for the Ziegler-Natta polymerization of ethylene and propylene. Magnesium chloride and titanium chloride are deposited on a gold polycrystalline foil from the gas phase. The deposited films are characterized by AES, TPD of n-C6H14 and film sublimation. Auger uptake experiments show that the MgCl2 film grows by a layer-by-layer mechanism on the polycrystalline substrate. The deposition of MgCl2 on the Au substrate can be followed by TPD of n-C6H14 up to the completion of the first monolayer. It is not possible to grow TiCl4 films on a MgCl2 film at room temperature, because of its high vapor pressure. The chemical interaction of TiCl4 with an ordered MgCl2 surface is too weak to allow the growth of a TiCl4 monolayer around 300 K. The bombardment of the MgCl2 thin film with Ar ions did not produce a surface capable to adsorb TiCl4 at room temperature. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. NR 7 TC 44 Z9 44 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-4332 J9 APPL SURF SCI JI Appl. Surf. Sci. PD JUN PY 1995 VL 89 IS 2 BP 187 EP 195 DI 10.1016/0169-4332(95)00033-X PG 9 WC Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA RB359 UT WOS:A1995RB35900010 ER PT J AU VOLKOW, ND DING, YS FOWLER, JS WANG, GJ LOGAN, J GATLEY, JS DEWEY, S ASHBY, C LIEBERMANN, J HITZEMANN, R WOLF, AP AF VOLKOW, ND DING, YS FOWLER, JS WANG, GJ LOGAN, J GATLEY, JS DEWEY, S ASHBY, C LIEBERMANN, J HITZEMANN, R WOLF, AP TI IS METHYLPHENIDATE LIKE COCAINE - STUDIES ON THEIR PHARMACOKINETICS AND DISTRIBUTION IN THE HUMAN BRAIN SO ARCHIVES OF GENERAL PSYCHIATRY LA English DT Article ID POSITRON EMISSION TOMOGRAPHY; DOPAMINE TRANSPORTERS; INTRAVENOUS-INJECTION; EXTRACELLULAR COCAINE; RHESUS-MONKEY; BINDING-SITES; RAT-BRAIN; IN-VIVO; RECEPTORS; BABOON AB Background: The purposes of this study were to investigate the pharmacokinetics of methylphenidate hydrochloride (Ritalin) in the human brain, to compare them with those of cocaine, and to evaluate whether cocaine and methylphenidate compete for the same binding sites. Methods: We used positron emission tomography to measure the temporal and spatial distribution of carbon 11 (C-11)-labeled methylphenidate. These results were compared with those obtained previously for [C-11]cocaine. Eight healthy male subjects, 20 to 51 years of age, were scanned with [C-11]methylphenidate. Three were tested twice to assess test-retest variability, four were tested at baseline and after administration of methylphenidate, and one was tested with [C-11]methylphenidate and [C-11]cocaine. Two baboons were scanned to evaluate whether there was competition between cocaine and methylphenidate for the same binding sites in the brain. Results: The uptake of [C-11] methylphenidate in the brain was high (mean+/-SD, 7.5%+/-1.5%), and the maximal concentration occurred in striatum. Pretreatment with methylphenidate decreased binding only in striatum (40%). Although the regional distribution of [C-11]methylphenidate was identical to that of [C-11] cocaine and they competed with each other for the same binding sites, these two drugs differed markedly in their pharmacokinetics, Clearance of [C-11]methylphenidate from striatum (90 minutes) was significantly slower than that of [C-11]cocaine (20 minutes). For both drugs, their fast uptake in striatum paralleled the experience of the ''high.'' For methylphenidate, the high decreased very rapidly despite significant binding of the drug in the brain. In contrast, for cocaine, the decline in the high paralleled its fast rate of clearance from the brain. Conclusion: We speculate that because the experience of the high is associated with the fast uptake of cocaine and methylphenidate in the brain, the slow clearance of methylphenidate from the brain may serve as a limiting factor in promoting its frequent self-administration. C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. SUNY STONY BROOK,DEPT PSYCHIAT,STONY BROOK,NY 11794. HILLSIDE HOSP,GLEN OAKS,NY 11004. RP VOLKOW, ND (reprint author), BROOKHAVEN NATL LAB,DEPT MED,BLDG 490,UPTON,NY 11973, USA. FU NIDA NIH HHS [5RO1-DA06891]; NINDS NIH HHS [NS15638] NR 54 TC 383 Z9 388 U1 9 U2 30 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0003-990X J9 ARCH GEN PSYCHIAT JI Arch. Gen. Psychiatry PD JUN PY 1995 VL 52 IS 6 BP 456 EP 463 PG 8 WC Psychiatry SC Psychiatry GA RC025 UT WOS:A1995RC02500004 PM 7771915 ER PT J AU HIVON, E BOUCHET, FR COLOMBI, S JUSZKIEWICZ, R AF HIVON, E BOUCHET, FR COLOMBI, S JUSZKIEWICZ, R TI REDSHIFT DISTORTIONS OF CLUSTERING - A LAGRANGIAN APPROACH SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE COSMOLOGY; GALAXIES, FORMATION; GALAXIES, STATISTICS; GALAXIES, THEORY; GALAXIES, LARGE SCALE GALAXIES, STRUCTURE OF UNIVERSE; GALAXIES, REDSHIFTS; METHODS, ANALYTICAL ID GRAVITATIONAL-INSTABILITY; PERTURBATION-THEORY; IRAS GALAXIES; UNIVERSE; SIMULATIONS; DENSITY; SAMPLE; FLUCTUATIONS; STATISTICS; SKEWNESS AB We study the effects of peculiar velocities on statistical measures of galaxy clustering. These effects occur when distances to the galaxies are estimated from their redshifts. It is assumed that the clustering pattern results from the gravitational instability of initially Gaussian, small-amplitude perturbations of a Friedman-Lemaitre cosmological model. Explicit expressions are given for an arbitrary density parameter Omega of the model, both when the cosmological constant, Lambda, is zero, and when the model is spatially flat, Omega + Lambda/3H(2) = 1. Kaiser (1987) had analyzed the redshift distortion of the two-point correlation function. This function determines the variance of the density field distribution function and can be computed using linear perturbation theory. We show here how to compute higher order moments in redshift space, paying special attention to the skewness, or third moment of the density field, and its Fourier space counterpart, the bispectrum. This calls for a weakly non-linear analysis. We rely on a perturbative expansion of particle trajectories in Lagrangian coordinates, using the formalism introduced by Moutarde et al. (1991) and further developed by Bouchet et al. (1992, 1994). This formalism extends to higher orders the Zel'dovich first order (i.e, linear) solution (1970). The lowest non-vanishing contribution to the skewness comes from the first and second-order terms in perturbation theory. Therefore, using Zel'dovich approximation would not be self-consistent and would yield inaccurate results. We show that a physically consistent and quantitatively accurate analysis of the growth skewness in redshift space can be obtained from second-order Lagrangian theory. With practical applications to redshift surveys in mind, we also study the effects of spatial smoothing of the evolved density field. The necessary formalism was developed by Juszkiewicz and Bouchet (1991) and Juszkiewicz et al. (1993a). Here we give the first complete account of these calculations; we also extend the formalism by explicitly taking redshift distortions into account. We give analytic expressions for the gravitationally induced skewness as a function of the power spectrum and of Omega, for a spherical top-hat and a Gaussian smoothing filter. We compare our analytical predictions with measurements performed in numerical simulations, and find good agreement. These results should then prove useful in analyzing large scale redshift surveys. In particular, our results, in conjunction with the recent suggestion of Fry (1994), may solve a well known problem which always arises in conventional dynamical determinations of the mean density of the universe. Such studies produce estimates of Omega which are coupled with the parameters describing the bias in the galaxy distribution. As a result, a biased Omega = 1 model is dynamically indistinguishable from an open, unbiased, one. For the first time, it may become possible to break this degeneracy, and decouple the estimates of linear and non-linear bias from the estimates of Omega and Lambda. C1 FERMILAB NATL ACCELERATOR LAB, NASA, FERMILAB ASTROPHYS CTR, BATAVIA, IL 60510 USA. COPERNICUS CTR, PL-00716 WARSAW, POLAND. INST ADV STUDY, PRINCETON, NJ 08540 USA. RP HIVON, E (reprint author), INST ASTROPHYS, CNRS, 98 BIS BLVD ARAGO, F-75014 PARIS, FRANCE. RI Bouchet, Francois/B-5202-2014 NR 53 TC 98 Z9 100 U1 0 U2 1 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 JUN PY 1995 VL 298 IS 3 BP 643 EP 660 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RG130 UT WOS:A1995RG13000005 ER PT J AU ARMUS, L HECKMAN, TM WEAVER, KA LEHNERT, MD AF ARMUS, L HECKMAN, TM WEAVER, KA LEHNERT, MD TI ROSAT OBSERVATIONS OF NGC-2146 - EVIDENCE FOR A STARBURST-DRIVEN SUPERWIND SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC 2146); GALAXIES, STARBURST; X-RAYS, GALAXIES ID FAR-INFRARED GALAXIES; X-RAY-EMISSION; NUCLEAR; M82; SPECTRA; BUBBLES; OUTFLOW; MODELS; WIND AB We have imaged the edge-on starburst galaxy NGC 2146 with the Position Sensitive Proportional Counter (PSPC) and the High Resolution Imager (HRI) on board ROSAT and have compared these data to optical images and long-slit spectra. NGC 2146 possesses a very large X-ray nebula with a half-light radius of 1' (4 kpc) and a maximum diameter of similar to 4', or 17 kpc. The X-ray emission is resolved by the PSPC and preferentially oriented along the minor axis, with a total flux of 1.1 x 10(-12) ergs cm(-2) s(-1) over 0.2-2.4 keV and a luminosity of similar to 3 x 10(40) ergs s(-1). The inner X-ray nebula is reserved by the HRI into at least four bright knots together with strong diffuse emission responsible for at least 50% of the flux within a radius of 0'.5 (similar to 2 kpc). The brightest knot has a luminosity of (2-3) x 10(39) ergs s(-1). The X-ray nebula has a spatial extent much larger than the starburst ridge seen at centimeter wavelengths by Kronberg and Biermann (1981) and is oriented in a ''X-like'' pattern along the galaxy minor axis at a position angle of similar to 30 degrees. This minor-axis X-ray emission is associated with a region of Ha and dust filaments seen in optical images. Optical spectra show that the emission-line gas along the minor axis is characterized by relatively broad lines (similar to 250 km s(-1) FWHM) and by ''shocklike'' emission-line flux ratios. Together with the blue-asymmetric nuclear emission-line and NaD interstellar absorption-line profiles, these optical data strongly suggest the presence of a starburst-driven superwind. The X-ray spectrum extracted from the central 5' contains a strong Fe L emission-line complex at 0.6-1.0 keV and a hard excess above 1.0 keV. The spectrum is best described with a two-component model, containing a soft (kT similar to 400-500 eV) Raymond-Smith thermal plasma together with either a Gamma = 1.7 power-law or a kT > 2.2 keV bremsstrahlung component. The soft thermal component provides similar to 30% of the total luminosity over 0.2-2.4 keV, or similar to 10(40) ergs s(-1). The pressure derived from the soft component of the X-ray spectrum is consistent with that predicted from a starburst-driven superwind if the filling factor of the warm gas is similar to 1%-10%. If the hard X-ray component is thermal gas associated with the galactic outflow, the filling factor must be close to unity. Predictions of the luminosity, temperature, and size of an adiabatic starburst-generated windblown bubble are consistent with those measured for the soft thermal X-ray emission in NGC 2146. The hard X-ray component, however, has a luminosity much larger than predicted by the superwind model if this component is thermal emission from gas heated by an internal shock in the expanding bubble. We briefly review various possibilities as to the nature of the hard X-ray component in NGC 2146. C1 CALTECH, PALOMAR OBSERV, PASADENA, CA 91125 USA. ASSOC UNIV RES ASTRON INC, KITT PEAK NATL OBSERV, TUCSON, AZ USA. JOHNS HOPKINS UNIV, DEPT PHYS, BALTIMORE, MD 21218 USA. SPACE TELESCOPE SCI INST, BALTIMORE, MD USA. PENN STATE UNIV, DEPT ASTRON & ASTROPHYS, DAVEY LAB 525, UNIVERSITY PK, PA 16802 USA. LAWRENCE LIVERMORE NATL LAB, INST GEOPHYS & PLANETARY PHYS, LIVERMORE, CA 94551 USA. OI Armus, Lee/0000-0003-3498-2973 NR 38 TC 39 Z9 39 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 JUN 1 PY 1995 VL 445 IS 2 BP 666 EP 679 DI 10.1086/175729 PN 1 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RA625 UT WOS:A1995RA62500013 ER PT J AU STROHMAYER, TE FENIMORE, EE MURAKAMI, T YOSHIDA, A AF STROHMAYER, TE FENIMORE, EE MURAKAMI, T YOSHIDA, A TI AN UNUSUAL HIGH-ENERGY TRANSIENT SO ASTROPHYSICAL JOURNAL LA English DT Article DE GAMMA RAYS, BURSTS; RADIATION MECHANISMS, NONTHERMAL ID GAMMA-RAY BURSTS; ELECTRON-PRECIPITATION; SPECTRA; BREMSSTRAHLUNG; IDENTIFICATION AB We report the detection of an unusual high-energy transient by the gamma-ray burst detectors onboard the satellite Ginga. This event was much softer than classical gamma-ray bursts, with a spectrum that peaks between 16 and 18 keV and decreases both above and below the peak. A thermal bremsstrahlung fit to the 20-400 keV emission gives a characteristic temperature of approximate to 24 keV; much softer (cooler) than the greater than 100 keV temperatures characteristic of the classical gamma-ray bursts, but similar to that of the soft gamma-ray repeaters (SGRs). The spectrum above the peak is similar to that of type I X-ray bursts; however, the peak energy is higher by about a factor of 5, well above the Eddington limit. We have established with high confidence that the spectrum rolls over below 15 keV. Spectral models which include photoelectric absorption from neutral matter with column densities of approximate to 10(24) cm(-2) give acceptable fits to the low-energy rollover, as does a power-law fit with an index alpha approximate to -2.5. power-law models with indices greater than -1.5 are strongly rejected by the data (a Rayleigh-Jeans spectrum has index -1.0). The time history of the event is simple, with a rise time of approximate to 0.7 s followed by an exponential decay with a 3 s timescale, similar to those seen from type I X-ray bursts as well as some classical gamma-ray bursts, but somewhat unusual for a SGR. C1 LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. INST SPACE & ASTRONAUT SCI, SAGAMIHARA, KANAGAWA 229, JAPAN. INST PHYS & CHEM RES, WAKO, SAITAMA 35101, JAPAN. NR 25 TC 3 Z9 3 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 JUN 1 PY 1995 VL 445 IS 2 BP 731 EP 735 DI 10.1086/175735 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RA625 UT WOS:A1995RA62500019 ER PT J AU IGLESIAS, CA WILSON, BG ROGERS, FJ GOLDSTEIN, WH BARSHALOM, A OREG, J AF IGLESIAS, CA WILSON, BG ROGERS, FJ GOLDSTEIN, WH BARSHALOM, A OREG, J TI EFFECTS OF HEAVY-METALS ON ASTROPHYSICAL OPACITIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE ATOMIC PROCESSES; STARS, INTERIOR AB Recent reexaminations of astrophysical opacities resulted in large opacity increases. The increases were mostly due to improvements in the atomic physics used in the calculations; in particular, the treatment of bound-bound transitions of partially ionized Fe. The new opacities were also found to depend on other Fe group elements even though in typical stars these elements have a combined abundance that is more than an order of magnitude lower than Fe. It is, therefore, important to examine the contributions from even heavier elements. These elements are much lower in abundance still, but have many more bound electrons and could, in principle, impact astrophysical opacities. It is shown that although the heavy elements are stronger photon absorbers their small abundance leads to a marginal effect on the Rosseland mean opacities of stars with solar metal distributions. C1 NUCL RES CTR NEGEV, BEER SHEVA, ISRAEL. RP IGLESIAS, CA (reprint author), LAWRENCE LIVERMORE NATL LAB, POB 808, LIVERMORE, CA 94550 USA. NR 16 TC 23 Z9 23 U1 0 U2 3 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 JUN 1 PY 1995 VL 445 IS 2 BP 855 EP 860 DI 10.1086/175745 PN 1 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RA625 UT WOS:A1995RA62500029 ER PT J AU PROVENCAL, JL WINGET, DE NATHER, RE ROBINSON, EL SOLHEIM, JE CLEMENS, JC BRADLEY, PA KLEINMAN, SJ KANAAN, A CLAVER, CF HANSEN, CJ MARAR, TMK SEETHA, S ASHOKA, BN LEIBOWITZ, EM MEISTAS, EG BRUVOLD, A VAUCLAIR, G DOLEZ, N CHEVRETON, M BARSTOW, MA SANSOM, AE TWEEDY, RW FONTAINE, G BERGERON, P KEPLER, SO WOOD, MA GRAUER, AD AF PROVENCAL, JL WINGET, DE NATHER, RE ROBINSON, EL SOLHEIM, JE CLEMENS, JC BRADLEY, PA KLEINMAN, SJ KANAAN, A CLAVER, CF HANSEN, CJ MARAR, TMK SEETHA, S ASHOKA, BN LEIBOWITZ, EM MEISTAS, EG BRUVOLD, A VAUCLAIR, G DOLEZ, N CHEVRETON, M BARSTOW, MA SANSOM, AE TWEEDY, RW FONTAINE, G BERGERON, P KEPLER, SO WOOD, MA GRAUER, AD TI THE UNUSUAL HELIUM VARIABLE AM CANUM-VENATICORUM SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; BINARIES, CLOSE; STARS, INDIVIDUAL (AM CANUM VENATICORUM); STARS, OSCILLATIONS; WHITE DWARFS ID WHOLE EARTH TELESCOPE; ACCRETION DISK; PERIOD; CVN; HZ AB The unusual variable star AM CVn has puzzled astronomers for over 40 years. This object, both a photometric and spectroscopic variable, is believed to contain a pair of hydrogen-deficient white dwarfs of extreme mass ratio, transferring material via an accretion disk. We examine the photometric properties of AM CVn, analyzing 289 hours of high-speed photometric data spanning 1976 to 1992. The power spectrum displays significant peaks at 988.7, 1248.8, 1902.5, 2853.8, 3805.2, 4756.5, and 5707.8 mu Hz (1011.4, 800.8, 525.6, 350.4, 262.8, 210.2, and 175.2 s). We find no detectable power at 951.3 mu Hz (1051 s), the previously reported main frequency. The 1902.5, 2853.9, and 3805.2 mu Hz peaks are multiplets, with frequency splitting in each case of 20.77 +/- 0.05 mu Hz. The 1902.5 mu Hz seasonal pulse shapes are identical, within measurement noise, and maintain the same amplitude and phase as a function of color. We have determined the dominant frequency to be 1902.509802 +/- 0.00001 mu Hz, with P = +1.71 (+/-0.04) x 10(-11) s s(-1). We discuss the implications of these findings on a model for AM CVn. C1 UNIV TEXAS,MCDONALD OBSERV,AUSTIN,TX 78712. UNIV DELAWARE,DEPT PHYS & ASTRON,NEWARK,DE 19716. UNIV TROMSO,N-9037 TROMSO,NORWAY. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50211. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. ISAAC NEWTON TELESCOPE,LA PALMA,SPAIN. INST ASTRON,HONOLULU,HI. UNIV COLORADO,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309. ISRO,CTR SATELLITE,DIV TECH PHYS,INDIAN SPACE RES ORG,BANGALORE 560017,KARNATAKA,INDIA. TEL AVIV UNIV,DEPT PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL. INST THEORET PHYS & ASTRON,ASTRON OBSERV,VILNIUS 2600,LITHUANIA. OBSERV MIDI PYRENEES,F-31400 TOULOUSE,FRANCE. OBSERV MEUDON,F-92195 MEUDON,FRANCE. UNIV LEICESTER,DEPT PHYS & ASTRON,LEICESTER LE1 7RH,LEICS,ENGLAND. UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721. UNIV MONTREAL,DEPT PHYS,MONTREAL,PQ H3C 3J7,CANADA. UNIV FED RIO GRANDE SUL,INST FIS,BR-91501970 PORTO ALEGRE,RS,BRAZIL. FLORIDA INST TECHNOL,DEPT PHYS & SPACE SCI,MELBOURNE,FL 32901. UNIV ARKANSAS,DEPT PHYS & ASTRON,LITTLE ROCK,AR 72204. RP PROVENCAL, JL (reprint author), UNIV TEXAS,DEPT ASTRON,RLM 15308,AUSTIN,TX 78712, USA. RI Kepler, S. O. /H-5901-2012 OI Kepler, S. O. /0000-0002-7470-5703 NR 32 TC 24 Z9 24 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 1995 VL 445 IS 2 BP 927 EP 938 DI 10.1086/175752 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RA625 UT WOS:A1995RA62500036 ER PT J AU BONO, G CASTELLANI, V STELLINGWERF, RF AF BONO, G CASTELLANI, V STELLINGWERF, RF TI TRANSIENT PHENOMENA AND MODAL STABILITY IN RR LYRAE AND BL HERCULIS VARIABLE-STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE STARS, HORIZONTAL BRANCH; STARS, OSCILLATIONS; STARS, VARIABLES, OTHER (RR LYRAE) ID GALACTIC HALO AB This Letter investigates the appearance of transient phenomena such as mode switching, pulsation quenching, and pulsation driving in RR Lyrae and BL Herculis variable stars. We intend to provide a theoretical scenario to be compared with the new homogeneous, accurate, and large photometric databases on light and temperature curves of radial pulsators (MACHO, EROS, and OGLE) which are becoming available. The nonlinear and convective models investigated in this survey present five different types of instability. The location of the transition lines which separate regions of different modal stability inside the instability strip (IS) were thoroughly evaluated. An observational test on the appearance of first-overtone pulsators among BL Herculis stars based on the topology of the instability regions outlined in the present investigation was also suggested. C1 UNIV PISA,DIPARTIMENTO FIS,I-56100 PISA,ITALY. LOS ALAMOS NATL LAB,DIV X1,LOS ALAMOS,NM 87545. RP BONO, G (reprint author), OSSERV ASTRON TRIESTE,VIA GB TIEPOLO 11,I-34131 TRIESTE,ITALY. NR 25 TC 11 Z9 11 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JUN 1 PY 1995 VL 445 IS 2 BP L145 EP L148 DI 10.1086/187910 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RA626 UT WOS:A1995RA62600019 ER PT J AU TIMMES, FX WOOSLEY, SE WEAVER, TA AF TIMMES, FX WOOSLEY, SE WEAVER, TA TI GALACTIC CHEMICAL EVOLUTION - HYDROGEN THROUGH ZINC SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Review DE GALAXY, ABUNDANCES; GALAXY, EVOLUTION; GALAXY, STELLAR CONTENT; NUCLEAR REACTIONS, NUCLEOSYNTHESIS, ABUNDANCES ID METAL-POOR STARS; ASYMPTOTIC GIANT BRANCH; SURFACE MASS DENSITY; INTER-STELLAR MEDIUM; HIGH-VELOCITY CLOUDS; RELATIVE ABUNDANCE DETERMINATIONS; NEUTRON-CAPTURE NUCLEOSYNTHESIS; OXYGEN ISOTOPIC ABUNDANCES; HADRON PHASE-TRANSITION; THERMALLY PULSING STARS AB Using the output from a grid of 60 Type II supernova models (Woosley and Weaver 1995) of varying mass (11 less than or equal to M/M. less than or equal to 40) and metallicity (0, 10(-4), 0.01, 0.1, and 1 Z.), the chemical evolution of 76 stable isotopes, from hydrogen to zinc, is calculated. The chemical evolution calculation employs a simple dynamical model for the Galaxy (infall with a 4 Gyr e-folding timescale onto an exponential disk and 1/r(2) bulge), and standard evolution parameters, such as a Salpeter initial mass function and a quadratic Schmidt star formation rate. The theoretical results are compared in detail with observed stellar abundances in stars with metallicities in the range -3.0 less than or equal to [Fe/K] less than or equal to 0.0 dex. While our discussion focuses on the solar neighborhood where there are the most observations, the supernova rates, an intrinsically Galactic quantity, are also discussed. Sampling 4.6 Gyr ago at a distance of 8.5 kpc, we find a composition at the solar circle that is in excellent agreement with the solar abundances from hydrogen to zinc. Type Ia supernovae provide about one-third of solar iron abundance in this distribution. Oxygen comes from the massive stars, but carbon and nitrogen come chiefly from stars with M less than or equal to 8 M.. The light metal and iron group elements, with the exception of titanium, are in generally good agreement with the stellar abundance data. We also find an age-metallicity relation, a G dwarf distribution, and present-day supernova rates that are in satisfactory agreement with observations. The neutrino process provides a good explanation for the origin of B-11 and F-19 and the increase in Li-7 over its canonical homogeneous big bang value. In order to explain the observed helium-to-metal enrichment (Delta Y/Delta Z similar or equal to 4), we find a favored cutoff in the mass of supernovae that eject all material external to the iron core of about 30 M., but this limit may be increased by considering the effects of mass loss. The robustness of the results to variations in the iron yields of the Type II supernova models are examined. C1 UNIV CALIF SANTA CRUZ,UNIV CALIF OBSERV,LICK OBSERV,BOARD STUDIES ASTRON & ASTROPHYS,SANTA CRUZ,CA 95064. LAWRENCE LIVERMORE NATL LAB,DIV GEN STUDIES,LIVERMORE,CA 94550. RP TIMMES, FX (reprint author), UNIV CHICAGO,ENRICO FERMI INST,ASTROPHY & SPACE RES LAB,5640 S ELLIS AVE,CHICAGO,IL 60637, USA. NR 299 TC 734 Z9 737 U1 4 U2 40 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JUN PY 1995 VL 98 IS 2 BP 617 EP 658 DI 10.1086/192172 PG 42 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QZ758 UT WOS:A1995QZ75800005 ER PT J AU LINDBERG, S VERMETTE, S AF LINDBERG, S VERMETTE, S TI WORKSHOP ON SAMPLING MERCURY IN PRECIPITATION FOR THE NATIONAL ATMOSPHERIC DEPOSITION PROGRAM SO ATMOSPHERIC ENVIRONMENT LA English DT Article DE MERCURY; WET DEPOSITION; NETWORK DESIGN; NADP AB Several actions have been undertaken within the National Atmospheric Deposition Program (NADP) to implement a regional mercury deposition network. This paper reports on the general findings of a National Atmospheric Deposition Program workshop on sampling mercury in precipitation, which has led to several conclusions important to the design of a regional sampling network for mercury. C1 SUNY COLL BUFFALO,BUFFALO,NY 14222. RP LINDBERG, S (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 0 TC 17 Z9 17 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD JUN PY 1995 VL 29 IS 11 BP 1219 EP 1220 DI 10.1016/1352-2310(94)00208-3 PG 2 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA RF304 UT WOS:A1995RF30400005 ER PT J AU VERMETTE, SJ PEDEN, ME WILLOUGHBY, TC LINDBERG, SE WEISS, AD AF VERMETTE, SJ PEDEN, ME WILLOUGHBY, TC LINDBERG, SE WEISS, AD TI METHODOLOGY FOR THE SAMPLING OF METALS IN PRECIPITATION - RESULTS OF THE NATIONAL ATMOSPHERIC DEPOSITION PROGRAM (NADP) PILOT NETWORK SO ATMOSPHERIC ENVIRONMENT LA English DT Article DE TRACE METALS; WET DEPOSITION; PRECIPITATION; NETWORK SAMPLING; NADP ID TRACE-METALS; NATURAL-WATERS; STORAGE AB A pilot network of three U.S. sites was initiated to test the feasibility of quantitating arsenic, cadmium copper, manganese, lead, and zinc in wet deposition, and to make recommendations for a subnetwork at site and training levels compatible with other wet deposition networks, specifically National Atmospheric Deposition Program (NADP). Modifications were made to Aerochem Metric samplers, including use of Teflon(R) surfaces, an insulated enclosure, and a thermostat controlled cooling fan and heater. Inductively coupled plasma mass spectrometry (ICP-MS) is well suited for the routine determination of the targeted metals at the low mu g l(-1) concentrations. Relatively simple cleaning and handling protocols are suitable for measuring metal concentrations at continental levels in precipitation without introducing significant contamination. C1 ILLINOIS STATE WATER SURVEY,CHAMPAIGN,IL 61820. US GEOL SURVEY,INDIANAPOLIS,IN 46278. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. ILLINOIS HAZARDOUS WASTE RES & INFORMAT CTR,CHAMPAIGN,IL 61820. RP VERMETTE, SJ (reprint author), SUNY COLL BUFFALO,1300 ELMWOOD AVE,BUFFALO,NY 14222, USA. NR 20 TC 17 Z9 17 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD JUN PY 1995 VL 29 IS 11 BP 1221 EP 1229 DI 10.1016/1352-2310(94)00207-2 PG 9 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA RF304 UT WOS:A1995RF30400006 ER PT J AU VERMETTE, S LINDBERG, S BLOOM, N AF VERMETTE, S LINDBERG, S BLOOM, N TI FIELD-TESTS FOR A REGIONAL MERCURY DEPOSITION NETWORK - SAMPLING DESIGN AND PRELIMINARY TEST-RESULTS SO ATMOSPHERIC ENVIRONMENT LA English DT Article DE MERCURY; WET DEPOSITION; NETWORK; PRECIPITATION COLLECTOR; NADP ID SUB-NANOGRAM; WATER; LAKES AB A number of actions have been undertaken within the National Atmospheric Deposition Program (NADP) to implement a regional mercury deposition network. This paper describes a field test designed to evaluate a collector design and protocol for implementation within a new Hg network. The collector chosen for evaluation is a ''dual-orifice'' collector, designed to sample precipitation for mercury and other metals simultaneously. The method chosen for Hg analysis was cold vapour atomic fluorescence spectroscopy (CVAFS). The weekly precipitation Hg concentrations range between 4.29 and 17.88 ng l(-1), with a volume-weighted mean of 10 ng l(-1) comparable to those reported in other ongoing studies in North America and Europe. Calculated deposition flux ranges from 43 to 358 ng m(-2) week(-1), with a mean of 186 ng m(-2) week(-1). C1 OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. FRONTIER GEOSCI, SEATTLE, WA 98109 USA. RP VERMETTE, S (reprint author), SUNY COLL BUFFALO, 1300 ELMWOOD AVE, BUFFALO, NY 14222 USA. NR 11 TC 38 Z9 38 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD JUN PY 1995 VL 29 IS 11 BP 1247 EP 1251 DI 10.1016/1352-2310(94)00321-B PG 5 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA RF304 UT WOS:A1995RF30400008 ER PT J AU MUSLIN, EH LI, D STEVENS, FJ DONNELLY, M SCHIFFER, M ANDERSON, LE AF MUSLIN, EH LI, D STEVENS, FJ DONNELLY, M SCHIFFER, M ANDERSON, LE TI ENGINEERING A DOMAIN-LOCKING DISULFIDE INTO A BACTERIAL MALATE-DEHYDROGENASE PRODUCES A REDOX-SENSITIVE ENZYME SO BIOPHYSICAL JOURNAL LA English DT Article ID SITE-DIRECTED MUTAGENESIS; PURIFICATION; MODULATION; PRINCIPLE; SEQUENCE; CLONING; PEA AB Light-dependent reduction of cystine disulfide bonds results in activation of several of the enzymes of photosynthetic carbon metabolism within the chloroplast. We have modeled the tertiary structure of four of these light-activated enzymes, namely NADP-linked malate dehydrogenase, glyceraldehyde-3-P dehydrogenase, fructosebisphosphatase, and sedoheptulosebisphosphatase, and identified cysteines in each enzyme that might be expected to form inactivating disulfide bonds (Li, D., F. J. Stevens, M. Schiffer, and L. E. Anderson, 1994. Biophys. J. 67:29-35). We have now converted two residues in the Escherichia coli NAD-linked malate dehydrogenase to cysteines and produced a redox-sensitive enzyme. Oxidation of domain-locking cysteine residues in the mutant enzyme clearly mimics dark inactivation of the redox-sensitive chloroplast dehydrogenase. This result is completely consistent with our proposed mechanism. C1 UNIV ILLINOIS,DEPT BIOL SCI M-C 066,CHICAGO,IL 60607. ARGONNE NATL LAB,CTR MECHANIST BIOL & BIOTECHNOL,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV ENVIRONM RES,ARGONNE,IL 60439. NR 27 TC 13 Z9 13 U1 1 U2 2 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD JUN PY 1995 VL 68 IS 6 BP 2218 EP 2223 PG 6 WC Biophysics SC Biophysics GA RH660 UT WOS:A1995RH66000003 PM 7647229 ER PT J AU BRODY, JP HAN, YQ AUSTIN, RH BITENSKY, M AF BRODY, JP HAN, YQ AUSTIN, RH BITENSKY, M TI DEFORMATION AND FLOW OF RED-BLOOD-CELLS IN A SYNTHETIC LATTICE - EVIDENCE FOR AN ACTIVE CYTOSKELETON SO BIOPHYSICAL JOURNAL LA English DT Article ID ERYTHROCYTES; INSTABILITY AB We introduce the use of microfabrication techniques to construct on a silicon wafer a synthetic capillary bed with 2.5- to 4-micron (mu)-wide channels. Establishment of a fluid pressure gradient allowed us to observe simultaneously using optical microscopy hundreds of cells flowing through the bed at physiological speeds. We find a large distribution of mobilities among red cells flowing through the structure; smaller channels provide a greater impedance to flow than larger ones, indicating that kinetic drag variations provide the origin of the distribution. The mobility of a particular cell is not correlated with the cell diameter but appears to be inversely correlated with intracellular calcium concentration of the cell, as determined by fluorescence of the calcium-binding dye fluo-3 AM. Also, we are able to use the parallel processing nature of our arrays to observe isolated events where the rigidity of the red cell seems to change suddenly over several orders of magnitude as it blocks a channel in the array. C1 PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544. UNIV CALIF LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544. OI Brody, James/0000-0002-7995-5197 FU NCRR NIH HHS [1 R03 RR08032-01] NR 24 TC 41 Z9 41 U1 1 U2 4 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD JUN PY 1995 VL 68 IS 6 BP 2224 EP 2232 PG 9 WC Biophysics SC Biophysics GA RH660 UT WOS:A1995RH66000004 PM 7647230 ER PT J AU SWIGER, RR TUCKER, JD HEDDLE, JA AF SWIGER, RR TUCKER, JD HEDDLE, JA TI DETECTION OF TRANSGENIC ANIMALS WITHOUT CELL-CULTURE USING FLUORESCENCE IN-SITU HYBRIDIZATION SO BIOTECHNIQUES LA English DT Note ID INSITU HYBRIDIZATION C1 YORK UNIV,TORONTO,ON M3J 2R7,CANADA. RP SWIGER, RR (reprint author), LAWRENCE LIVERMORE NATL LAB,BIOL & BIOTECHNOL RES PROGRAM,POB 808-L-452,LIVERMORE,CA 94551, USA. NR 7 TC 10 Z9 10 U1 0 U2 0 PU EATON PUBLISHING CO PI NATICK PA 154 E. CENTRAL ST, NATICK, MA 01760 SN 0736-6205 J9 BIOTECHNIQUES JI Biotechniques PD JUN PY 1995 VL 18 IS 6 BP 952 EP & PG 0 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RB854 UT WOS:A1995RB85400003 PM 7546714 ER PT J AU KIM, R HOLBROOK, EL JANCARIK, J KIM, SH AF KIM, R HOLBROOK, EL JANCARIK, J KIM, SH TI SYNTHESIS AND PURIFICATION OF MILLIGRAM QUANTITIES OF SHORT RNA TRANSCRIPTS SO BIOTECHNIQUES LA English DT Note RP KIM, R (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV STRUCT BIOL,BERKELEY,CA 94720, USA. FU NCI NIH HHS [T32 CA09041] NR 10 TC 7 Z9 7 U1 0 U2 0 PU EATON PUBLISHING CO PI NATICK PA 154 E. CENTRAL ST, NATICK, MA 01760 SN 0736-6205 J9 BIOTECHNIQUES JI Biotechniques PD JUN PY 1995 VL 18 IS 6 BP 992 EP 994 PG 3 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RB854 UT WOS:A1995RB85400014 PM 7546725 ER PT J AU RODGERS, PW MARTIN, AJ ROBERTSON, MC HSU, MM HARRIS, DB AF RODGERS, PW MARTIN, AJ ROBERTSON, MC HSU, MM HARRIS, DB TI SIGNAL-COIL CALIBRATION OF ELECTROMAGNETIC SEISMOMETERS SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID PERIOD AB We show that electromagnetic (em) seismometers may be easily and accurately calibrated by removing a step of current from their signal coil, and simultaneously switching the signal coil to a recorder to capture the response. A theory is developed that obtains the damped generator constant, resonant frequency, and damping ratio from the output of a system identifier used to analyze the response. Only the seismometer mass (from the manufacturer) and the applied current (measured) need be known for a complete calibration. The coil and damping resistances are not required. The method is confirmed by comparing this signal-coil method with weight-lift and calibration-coil calibrations. For a GS-13 V seismometer, these results were within 1.3% of each other. The undamped generator constant computed from the damped generator constant obtained by the signal-coil method matched the generator constant given by the manufacturer to better than 1%. Calibration of nine new L-4C components resulted in undamped generator constants all within 3% of the values given by the manufacturer. The circuit used in the signal-coil method is shown and explained. C1 UNIV SO CALIF,DEPT GEOL SCI,LOS ANGELES,CA 90089. LAWRENCE LIVERMORE NATL LAB,TREATY VERIFICAT PROGRAM SEISMOL,LIVERMORE,CA 94550. RP RODGERS, PW (reprint author), UNIV CALIF SANTA BARBARA,INST CRUSTAL STUDIES,SANTA BARBARA,CA 93106, USA. NR 15 TC 7 Z9 8 U1 0 U2 0 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD JUN PY 1995 VL 85 IS 3 BP 845 EP 850 PG 6 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA RC529 UT WOS:A1995RC52900015 ER PT J AU CAPPELLI, P AF CAPPELLI, P TI IS THE SKILLS GAP REALLY ABOUT ATTITUDES SO CALIFORNIA MANAGEMENT REVIEW LA English DT Article ID PREDICTING JOB-PERFORMANCE; INTRINSIC MOTIVATION; WORK; BEHAVIOR; COMMITMENT; VALIDITY; SATISFACTION; ORGANIZATION; ACHIEVEMENT; CITIZENSHIP AB Contrary to popular opinion, the vast majority of complaints about the poor quality of school graduates who enter the workforce are not about a lack of academic skills but instead focus on deficiencies of appropriate work attitudes and behaviors. In fact, attitudes and behaviors have a significant impact on workforce qualify and can be developed both in schools and on the job. C1 US DOE,NATL CTR EDUC QUAL WORKFORCE,WASHINGTON,DC 20585. RP CAPPELLI, P (reprint author), UNIV PENN,WHARTON SCH,CTR HUMAN RESOURCES,PHILADELPHIA,PA 19104, USA. NR 80 TC 22 Z9 22 U1 0 U2 8 PU UNIV CALIF PI BERKELEY PA GRAD SCH BUSINESS ADMIN, BERKELEY, CA 94720 SN 0008-1256 J9 CALIF MANAGE REV JI Calif. Manage. Rev. PD SUM PY 1995 VL 37 IS 4 BP 108 EP 124 PG 17 WC Business; Management SC Business & Economics GA RR444 UT WOS:A1995RR44400006 ER PT J AU DEPETERS, EJ MEDRANO, JF REED, BA AF DEPETERS, EJ MEDRANO, JF REED, BA TI FATTY-ACID COMPOSITION OF MILK-FAT FROM 3 BREEDS OF DAIRY-CATTLE SO CANADIAN JOURNAL OF ANIMAL SCIENCE LA English DT Note DE HOLSTEIN; JERSEY; BROWN SWISS; MILK FATTY ACIDS ID COWS MILK AB The proportion of MCFA in milk fat was lowest for Holstein, highest for Jersey, and intermediate for Brown Swiss cows. Proportions of SCFA (C4:0 to C8:0) and LCFA (> 18 C) did not differ among breeds. Differences in fatty acid composition among breeds were small, but could contribute to differences in manufacturing properties of milk fat. RP DEPETERS, EJ (reprint author), LAWRENCE LIVERMORE NATL LAB,DEPT ANIM SCI,DAVIS,CA 95616, USA. NR 12 TC 30 Z9 32 U1 0 U2 4 PU AGR INST CANADA PI OTTAWA PA SUITE 907 151 SLATER ST, OTTAWA ON K1P 5H4, CANADA SN 0008-3984 J9 CAN J ANIM SCI JI Can. J. Anim. Sci. PD JUN PY 1995 VL 75 IS 2 BP 267 EP 269 PG 3 WC Agriculture, Dairy & Animal Science SC Agriculture GA RJ484 UT WOS:A1995RJ48400015 ER PT J AU DALEY, PF AF DALEY, PF TI CHLOROPHYLL FLUORESCENCE ANALYSIS AND IMAGING IN PLANT STRESS AND DISEASE SO CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE LA English DT Article; Proceedings Paper CT 6th International Congress of Plant Pathology CY JUL 28-AUG 06, 1993 CL MONTREAL, CANADA AB Quantitative analysis of chlorophyll fluorescence transients and quenching has evolved rapidly in the last decade. Instrumentation capable of fluorescence detection in bright actinic light has been used in conjunction with gas exchange analysis to build an empirical foundation relating quenching parameters to photosynthetic electron transport, the state of the photoapparatus, and carbon fixation. We have developed several instruments that collect video images of chlorophyll fluorescence. Digitized versions of these images can be manipulated as numerical data arrays, supporting generation of quenching maps that represent the spatial distribution of photosynthetic activity in leaves. We have applied this technology to analysis of fluorescence quenching during application of stress hormones, herbicides, and physical stresses, including drought and sudden changes in humidity of the atmosphere surrounding leaves, and during stomatal oscillations in high CO2 We describe a recently completed portable fluorescence imaging system utilizing LED illumination and a consumer-grade camcorder, that will be used in long-term, nondestructive field studies of plant virus infections. RP DALEY, PF (reprint author), LAWRENCE LIVERMORE NATL LAB,DIV ENVIRONM RESTORAT,POB 808 L-528,LIVERMORE,CA 94550, USA. NR 0 TC 38 Z9 42 U1 1 U2 1 PU CANADIAN PHYTOPATHOL SOC PI GUELPH PA DEPT ENVIRON BIOL/UNIV GUELPH CAN. J PLANT PATHOL. DR. ROBERT HALL, GUELPH ON N1G 2W1, CANADA SN 0706-0661 J9 CAN J PLANT PATHOL JI Can. J. Plant Pathol.-Rev. Can. Phytopathol. PD JUN PY 1995 VL 17 IS 2 BP 167 EP 173 PG 7 WC Plant Sciences SC Plant Sciences GA RX750 UT WOS:A1995RX75000010 ER PT J AU RHODES, OE SMITH, LM CHESSER, RK AF RHODES, OE SMITH, LM CHESSER, RK TI APPORTIONMENT OF GENETIC VARIANCE IN MIGRATING AND WINTERING MALLARDS SO CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE LA English DT Note ID ELECTROPHORETIC DATA; POPULATIONS; SYSTEMATICS AB Mallards (Anas platyrhynchos, n = 289) wintering in the Southern High Plains of Texas were collected from 15 October 1988 to 7 February 1989 and electrophoretically surveyed for genetic variation at 30 biochemical loci. Genetic data were used to detect mixtures of breeding populations in the wintering aggregation of mallards that migrate into the Southern High Plains and to estimate the proportion of total genetic variation partitioned among breeding populations represented on the study area there. Wintering mallards represented mixtures of genetically heterogeneous breeding populations with a minimum of 10.4-11.7% of the genetic variation partitioned among populations represented. Genetic information may be useful in detecting mixtures of breeding populations in specific wintering areas within and among flyways. C1 TEXAS TECH UNIV,DEPT RANGE & WILDLIFE MANAGEMENT,LUBBOCK,TX 79408. RP RHODES, OE (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29802, USA. NR 24 TC 13 Z9 13 U1 0 U2 1 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0008-4301 J9 CAN J ZOOL JI Can. J. Zool.-Rev. Can. Zool. PD JUN PY 1995 VL 73 IS 6 BP 1182 EP 1185 DI 10.1139/z95-140 PG 4 WC Zoology SC Zoology GA RX214 UT WOS:A1995RX21400021 ER PT J AU ELLESS, MP AF ELLESS, MP TI MINCALC1 - A SPREADSHEET FOR THE RAPID CALCULATION OF 2/1 PHYLLOSILICATE MINERAL FORMULAS FROM CHEMICAL-ANALYSES SO CLAYS AND CLAY MINERALS LA English DT Note DE CLAY MINERAL FORMULAS; SPREADSHEET RP ELLESS, MP (reprint author), OAK RIDGE INST SCI & EDUC,OAK RIDGE,TN 37830, USA. NR 3 TC 1 Z9 1 U1 0 U2 1 PU CLAY MINERALS SOCIETY PI BOULDER PA PO BOX 4416, BOULDER, CO 80306 SN 0009-8604 J9 CLAY CLAY MINER JI Clay Clay Min. PD JUN PY 1995 VL 43 IS 3 BP 387 EP 389 DI 10.1346/CCMN.1995.0430315 PG 3 WC Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil Science SC Chemistry; Geology; Mineralogy; Agriculture GA RV428 UT WOS:A1995RV42800015 ER PT J AU BURTIS, CA AF BURTIS, CA TI TECHNOLOGICAL TRENDS IN CLINICAL LABORATORY SCIENCE SO CLINICAL BIOCHEMISTRY LA English DT Review DE TECHNOLOGY; TECHNOLOGICAL CHANGE; ADVANCED COMPUTERS; MICROTECHNOLOGY; IMMUNODIAGNOSTICS; NEURAL NETWORKS; MOLECULAR BIOLOGY ID HUMAN GENOME PROJECT; NEURAL NETWORKS; INFECTIOUS-DISEASES; IMMUNE-SYSTEM; DIAGNOSIS; ANALYZER; CARE; DNA; SILICON AB Objective: This article will review the advancements and new developments being made in (1) advanced computers, (2) microtechnology, (3) advanced immunodiagnostics, (4) neural networks, and (5) molecular biology. The influence of these technologies and their products on clinical laboratories is also discussed. Conclusion: Significant evolutionary and revolutionary technological changes are occurring in a number of scientific and engineering disciplines that impact the medical profession. As a consequence of this era of rapid change, the discipline of Clinical Laboratory Science is undergoing a ''technological explosion'' which is having a significant and profound effect on how clinical laboratories of today and tomorrow are and will be staffed, equipped, and operated. C1 OAK RIDGE NATL LAB,DIV HLTH,OAK RIDGE,TN 37831. RP BURTIS, CA (reprint author), OAK RIDGE NATL LAB,DIV CHEM TECHNOL,POB 2008,OAK RIDGE,TN 37831, USA. NR 77 TC 4 Z9 4 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0009-9120 J9 CLIN BIOCHEM JI Clin. Biochem. PD JUN PY 1995 VL 28 IS 3 BP 213 EP 219 DI 10.1016/0009-9120(94)00075-7 PG 7 WC Medical Laboratory Technology SC Medical Laboratory Technology GA RE788 UT WOS:A1995RE78800002 PM 7554240 ER PT J AU CHEN, S DAWSON, SP DOOLEN, GD JANECKY, DR LAWNICZAK, A AF CHEN, S DAWSON, SP DOOLEN, GD JANECKY, DR LAWNICZAK, A TI LATTICE METHODS AND THEIR APPLICATIONS TO REACTING SYSTEMS SO COMPUTERS & CHEMICAL ENGINEERING LA English DT Review ID GAS CELLULAR-AUTOMATON; COMPUTATIONAL FLUID-DYNAMICS; REACTION-DIFFUSION EQUATIONS; TIME CORRELATION-FUNCTIONS; NAVIER-STOKES EQUATION; MODE-COUPLING THEORY; BOLTZMANN-EQUATION; IMMISCIBLE FLUIDS; SURFACE-TENSION; EXCITABLE MEDIA AB The recent development of the lattice gas automata method and its extension to the lattice Boltzmann method have provided new computational schemes for solving a variety of partial differential equations and modeling chemically reacting systems. The lattice gas method, regarded as the simplest microscopic and kinetic approach which generates meaningful macroscopic dynamics, is fully parallel and can, as a result, be easily programmed on parallel machines. In this paper, we introduce the basic principles of the lattice gas method and the lattice Boltzmann method, their numerical implementations and applications to chemically reacting systems. Comparisons of the lattice Boltzmann method with the lattice gas technique and other traditional numerical schemes, including the finite difference scheme and the pseudo-spectral method, for solving the Navier-Stokes hydrodynamic fluid flows will be discussed. Recent developments of the lattice gas and the lattice Boltzmann method and their applications to pattern formation in chemical reaction-diffusion systems, multiphase fluid flows and polymeric dynamics will be presented. C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV ISOTOPE & NUCL CHEM,LOS ALAMOS,NM 87545. UNIV GUELPH,DEPT MATH & STAT,GUELPH,ON N1G 2W1,CANADA. IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598. RP CHEN, S (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. RI Chen, Shiyi/A-3234-2010; OI Ponce Dawson, Silvina/0000-0001-6550-4267 NR 152 TC 109 Z9 115 U1 1 U2 23 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0098-1354 J9 COMPUT CHEM ENG JI Comput. Chem. Eng. PD JUN-JUL PY 1995 VL 19 IS 6-7 BP 617 EP 646 PG 30 WC Computer Science, Interdisciplinary Applications; Engineering, Chemical SC Computer Science; Engineering GA QR783 UT WOS:A1995QR78300002 ER PT J AU DUNNING, JB BORGELLA, R CLEMENTS, K MEFFE, GK AF DUNNING, JB BORGELLA, R CLEMENTS, K MEFFE, GK TI PATCH ISOLATION, CORRIDOR EFFECTS, AND COLONIZATION BY A RESIDENT SPARROW IN A MANAGED PINE WOODLAND SO CONSERVATION BIOLOGY LA English DT Article ID CONSERVATION AB The isolation of habitat patches is often cited as having a major impact on the dynamics of small populations occupying patches in a complex landscape. Few studies, however, have provided field data demonstrating that isolation has an identifiable effect on specific populations independent of other factors such as local habitat quality or that landscape factors such as corridors can alleviate such effects. We conducted field surveys of Bachman's Sparrow (Aimophila aestivalis) populations in regions, which we call linear landscapes where suitable habitat patches were isolated to varying degrees from potential sources of dispersing birds. In these linear landscapes isolated patches of habitat were less likely to be colonized than were nonisolated patches. We also found that corridor configuration; of habitat patches improved the ability of sparrows to find and settle in newly created patches. These results suggest that for species that do not disperse easily through inhospitable landscapes, habitat occupancy at a regional scale can be enhanced by careful landscape design and planning. C1 UNIV GEORGIA,INST ECOL,ATHENS,GA 30602. MARLBORO COLL,DEPT BIOL,MARLBORO,VT 05344. BAYLOR UNIV,DEPT BIOL,WACO,TX 76798. UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. NR 21 TC 103 Z9 105 U1 0 U2 11 PU BLACKWELL SCIENCE PUBL INC CAMBRIDGE PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0888-8892 J9 CONSERV BIOL JI Conserv. Biol. PD JUN PY 1995 VL 9 IS 3 BP 542 EP 550 DI 10.1046/j.1523-1739.1995.09030542.x PG 9 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA RB704 UT WOS:A1995RB70400012 ER PT J AU BUCHHEIT, RG WALL, FD STONER, GE MORAN, JP AF BUCHHEIT, RG WALL, FD STONER, GE MORAN, JP TI ANODIC DISSOLUTION-BASED MECHANISM FOR THE RAPID CRACKING, PREEXPOSURE PHENOMENON DEMONSTRATED BY ALUMINUM-LITHIUM-COPPER ALLOYS SO CORROSION LA English DT Article DE ALUMINUM-LITHIUM-COPPER ALLOYS; ANODIC DISSOLUTION; MICROSTRUCTURE; PREEXPOSURE EMBRITTLEMENT; STRESS CORROSION CRACKING ID STRESS-CORROSION CRACKING; LI-CU ALLOYS; AL-LI; ASSISTED FRACTURE; ALZNMG-ALLOYS; MG ALLOYS; ZR ALLOY; RESISTANCE; HYDROGEN; MICROSTRUCTURE AB Stress corrosion cracking (SCC) test specimens of Al-Li-Cu alloy that were subjected to fixed-displacement loading and exposed to aerated 3.5 wt% sodium chloride (NaCl) solution for I week failed < 24 h after removal into ambient atmospheres. Anodic dissolution-based mechanisms proposed previously for this phenomenon were amended based upon further characterization of the rapid cracking process. Amendments were based on studies of the relative electrochemical behavior of the microstructural elements in the subgrain boundary (SGB) region, time-to-failure SCC testing in a simulated crack solution, evolution of crack potential and pH with time, fractographic examination of failed samples, and x-ray diffraction (XRD) of films passivating crack walls. Results suggested an active path existed along SGB that was composed of the highly reactive T-1 (Al(2)CuL(i)) precipitate phase and a solute-depleted zone that did not passivate readily when exposed to the crack environment. The matrix phase along crack walls appeared to passivate in the crack environment, thereby confining attack to the SGB region. This active path was enabled when cracks were isolated from a bulk environment, but it was disabled otherwise. Potential and pH conditions required for cracking were reviewed, along with the formation of a hydrotalcite, Li-2[Al-2(OH)(6)](2) . CO3 . 3H(2)O, film that appeared to be responsible for passivating crack walls. C1 UNIV VIRGINIA,CTR ELECTROCHEM SCI & ENGN,CHARLOTTESVILLE,VA 22903. ALUMINIUM CO AMER,ALCOA LABS,ALCOA CTR,PA 15069. RP BUCHHEIT, RG (reprint author), SANDIA NATL LABS,DEPT MECH & CORROS MET,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 46 TC 20 Z9 22 U1 0 U2 8 PU NATL ASSN CORROSION ENG PI HOUSTON PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 SN 0010-9312 J9 CORROSION JI Corrosion PD JUN PY 1995 VL 51 IS 6 BP 417 EP 428 PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RL390 UT WOS:A1995RL39000002 ER PT J AU DANIELSON, MJ AF DANIELSON, MJ TI EFFECT OF GAMMA-RADIATION ON STABILITY OF SILVER-SILVER CHLORIDE AND MERCURY-CALOMEL COMMERCIAL REFERENCE ELECTRODES SO CORROSION LA English DT Article DE CALOMEL; GAMMA RADIATION; MERCURY; MIXED-POTENTIAL THEORY; PITTING; POTENTIAL; REFERENCE ELECTRODE; SILVER; SILVER CHLORIDE; STRESS CORROSION CRACKING AB Electrochemical potential measurements of materials in radioactive waste environments will be important in determining if the materials have a propensity for stress corrosion cracking (SCC) and pitting. Potential measurements require a reference electrode (RE), but the effect of ionizing radiation on the potential generated by the RE has been uncertain. Two common types of RE were evaluated under Co-60 gamma radiation at room temperature. The silver-silver chloride (Ag-AgCl) and mercury-calomel (Hg-Hg2Cl2) RE showed essentially no radiation effects up to a dose rate of 2.1E6 rad/h and dose of 9.4E8 rad, indicating these RE would be useful for in-lank studies. The long-lived design of the Ag-AgCl RE showed serious potential deviations at doses of 2.E8 rad but would be the electrode of choice in many situations because it is simple to maintain. The mixed-potential theory was used to explain the radiation effects. RP DANIELSON, MJ (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 8 TC 8 Z9 8 U1 1 U2 6 PU NATL ASSN CORROSION ENG PI HOUSTON PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 SN 0010-9312 J9 CORROSION JI Corrosion PD JUN PY 1995 VL 51 IS 6 BP 450 EP 455 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RL390 UT WOS:A1995RL39000006 ER PT J AU MAEDA, S AF MAEDA, S TI FURTHER DEVELOPMENT OF RECOMBINANT BACULOVIRUS INSECTICIDES SO CURRENT OPINION IN BIOTECHNOLOGY LA English DT Article ID NUCLEAR POLYHEDROSIS-VIRUS; HOST-RANGE EXPANSION; BACILLUS-THURINGIENSIS; MEDIATED EXPRESSION; NEUROTOXIN GENE; PEST-CONTROL; CELL-LINES; INFECTIVITY; DNA; CONSTRUCTION AB On the basis of recent laboratory and field experiments, recombinant baculoviruses expressing insect-specific neurotoxin genes show an increased speed of insect killing compared with natural baculoviruses. They can also induce symptoms similar to those induced by chemical insecticides and have the potential for widespread use in agriculture. Current studies of the ecology and molecular biology of baculoviruses should further improve efficacy and better define safety. RP MAEDA, S (reprint author), LAWRENCE LIVERMORE NATL LAB,DEPT ENTOMOL,DAVIS,CA 95616, USA. NR 54 TC 26 Z9 31 U1 0 U2 0 PU CURRENT BIOLOGY LTD PI LONDON PA 34-42 CLEVELAND STREET, LONDON, ENGLAND W1P 6LB SN 0958-1669 J9 CURR OPIN BIOTECH JI Curr. Opin. Biotechnol. PD JUN PY 1995 VL 6 IS 3 BP 313 EP 319 DI 10.1016/0958-1669(95)80053-0 PG 7 WC Biochemical Research Methods; Biotechnology & Applied Microbiology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology GA RA495 UT WOS:A1995RA49500011 PM 7780182 ER PT J AU KUO, C CRAWFORD, HJ JEANLOZ, R ROMANOWICZ, B SHAPIRO, G STEVENSON, ML AF KUO, C CRAWFORD, HJ JEANLOZ, R ROMANOWICZ, B SHAPIRO, G STEVENSON, ML TI EXTRATERRESTRIAL NEUTRINOS AND EARTH STRUCTURE SO EARTH AND PLANETARY SCIENCE LETTERS LA English DT Article ID HIGH-ENERGY NEUTRINOS; TOMOGRAPHY AB Astrophysical sources of very high energy neutrinos may offer a novel means of imaging the Earth's internal structure. Likewise, occultation by our planet's core-mantle structure can help constrain the locations of extragalactic neutrino sources. Neutrino observations from the Earth's surface thus motivate new levels of collaboration between astrophysics and geophysics. C1 UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP KUO, C (reprint author), UNIV CALIF BERKELEY,DEPT GEOL & GEOPHYS,BERKELEY,CA 94720, USA. RI Kuo, Chaincy/G-2403-2015; Kuo, Chaincy/H-9475-2016; OI Kuo, Chaincy/0000-0001-7958-8764; romanowicz, Barbara/0000-0002-6208-6044 NR 25 TC 14 Z9 14 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0012-821X J9 EARTH PLANET SC LETT JI Earth Planet. Sci. Lett. PD JUN PY 1995 VL 133 IS 1-2 BP 95 EP 103 DI 10.1016/0012-821X(95)00050-M PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA RK040 UT WOS:A1995RK04000008 ER PT J AU SANFORD, WE STEENHUIS, TS PARLANGE, JY SURFACE, JM PEVERLY, JH AF SANFORD, WE STEENHUIS, TS PARLANGE, JY SURFACE, JM PEVERLY, JH TI HYDRAULIC CONDUCTIVITY OF GRAVEL AND SAND AS SUBSTRATES IN ROCK-REED FILTERS SO ECOLOGICAL ENGINEERING LA English DT Article DE CONSTRUCTED WETLANDS; LANDFILL LEACHATE; HYDRAULIC CONDUCTIVITY; SUBSURFACE FLOW ID ROOT-ZONE METHOD; WASTE-WATER; WETLAND AB Long-term use of a constructed wetland to treat landfill leachate requires that the saturated hydraulic conductivity be maintained and clogging avoided to prevent overland now, which bypasses the treatment process. This paper describes the application of an equation developed for prediction of cumulative drainage volume from hillslopes to measure the saturated hydraulic conductivity (K-s) of substrates used in rock-reed filters. Outflow was measured at five intervals during the first 26 months of operation. The values of K-s obtained by the drainage equation compared favorably with values calculated from a more difficult method based on Darcy's law. Results indicate that the finest substrate (a sand-and-gravel mixture) became almost completely clogged, and that the presence of reeds (Phragmites australis) did not maintain or increase the conductivity. Hydraulic conductivity of pea-gravel (0.5-cm diameter) and coarse-gravel (3-cm diameter) substrates with reeds did decrease in the 26-month period. C1 UNIV TENNESSEE,DEPT CIVIL & ENVIRONM ENGN,KNOXVILLE,TN 37996. CORNELL UNIV,DEPT AGR & BIOL ENGN,ITHACA,NY 14853. US GEOL SURVEY,ITHACA,NY 14850. CORNELL UNIV,DEPT SOIL CROP & ATMOSPHER SCI,ITHACA,NY 14853. RP SANFORD, WE (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,POB 2008,MS 6352,OAK RIDGE,TN 37831, USA. RI Sanford, William/F-7380-2016 OI Sanford, William/0000-0001-9085-1367 NR 16 TC 32 Z9 34 U1 0 U2 11 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0925-8574 J9 ECOL ENG JI Ecol. Eng. PD JUN PY 1995 VL 4 IS 4 BP 321 EP 336 DI 10.1016/0925-8574(95)00004-3 PG 16 WC Ecology; Engineering, Environmental; Environmental Sciences SC Environmental Sciences & Ecology; Engineering GA RK650 UT WOS:A1995RK65000006 ER PT J AU HILL, WR RYON, MG SCHILLING, EM AF HILL, WR RYON, MG SCHILLING, EM TI LIGHT LIMITATION IN A STREAM ECOSYSTEM - RESPONSES BY PRIMARY PRODUCERS AND CONSUMERS SO ECOLOGY LA English DT Article DE ALGAE; COMPETITION; ELIMIA; GRAZING; HERBIVORY; LIPIDS; PERIPHYTON; PHOTOINHIBITION; PHOTOSYNTHESIS-IRRADIANCE; SHADE; SNAILS; WOODLAND STREAM ID INTRASPECIFIC COMPETITION; PERIPHYTON RESPONSES; CADDISFLY POPULATION; PRIMARY PRODUCTIVITY; NUTRIENT LIMITATION; LOTIC PERIPHYTON; WOODLAND STREAM; FOOD-CHAIN; CLEAR-CUT; TOP-DOWN AB Heavy shade presents serious challenges for primary producers and food-limited herbivores in forest streams. In this study, we examined the response of periphyton and grazing snails (Elimia clavaeformis) to summer shade in White Oak Creek (WOC), a second-order stream in a Tennessee deciduous forest. Three experiments were performed: (1) in situ manipulation of light and snail density to test the effects of light limitation and grazing; (2) construction of photosynthesis-irradiance (P-I) curves to test for shade adaptation by periphyton; and (3) measurements of snail growth vs. irradiance, to quantify the indirect relationship between grazers and an abiotic constraint on photosynthesis. In the first experiment, light and snail densities were manipulated in a 2 x 2 factorial design: two light treatments were created by removing streamside vegetation from four sites in WOC and by pairing each of these sites with an adjacent, shaded site; two snail density treatments at each site were created by adding snails at normal (970 individuals/m(2)) and low (50 individuals/m(2)) density to the two sides of Plexiglas channels. Snails at normal densities cropped periphyton biomass to low levels regardless of light regime, but periphyton productivity was higher at the open sites where snails grew faster and accumulated more lipid. Snail growth and lipid accumulation were strongly affected by intraspecific competition in both light regimes. In the second experiment, photosynthesis-irradiance curves for periphyton from shaded and open sites illustrated considerable shade adaptation: shaded periphyton was 2 times more efficient at low irradiance than was periphyton from open sites. Despite the greater efficiency of shaded periphyton at low irradiance, integrated primary production estimated with photosynthetic models was 4 times greater in the open because shade adaptation provided only partial compensation for the very low irradiances in the shade. In the third experiment, in situ snail growth again increased with decreasing shade. The growth vs. irradiance response resembled a P-I curve: snail growth increased almost linearly with increased light and then leveled off at a photon flux density of approximate to 7 mol m(-2). d(-1). If this curve primarily reflects rates of food supply, then periphyton production and grazer growth in WOC and similar streams is light-limited at a photon flux density <7 mol m(-2). d(-1). Bottom-up effects of light limitation were propagated very strongly in WOC, where the invertebrate fauna is dominated by a grazer that appears to escape top-down control. RP HILL, WR (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,POB 2008,OAK RIDGE,TN 37831, USA. NR 68 TC 242 Z9 248 U1 16 U2 115 PU ECOLOGICAL SOC AMER PI TEMPE PA ARIZONA STATE UNIV CENTER ENVIRONMENTAL STUDIES, TEMPE, AZ 85287 SN 0012-9658 J9 ECOLOGY JI Ecology PD JUN PY 1995 VL 76 IS 4 BP 1297 EP 1309 DI 10.2307/1940936 PG 13 WC Ecology SC Environmental Sciences & Ecology GA QZ878 UT WOS:A1995QZ87800025 ER PT J AU BERGMAN, PD WINTER, EM AF BERGMAN, PD WINTER, EM TI DISPOSAL OF CARBON-DIOXIDE IN AQUIFERS IN THE US SO ENERGY CONVERSION AND MANAGEMENT LA English DT Article; Proceedings Paper CT 2nd International Conference on Carbon Dioxide Removal CY OCT 24-27, 1994 CL KYOTO, JAPAN SP Res Inst Innovat Technol Earth, New Energy & Ind Technol Dev Org, Int Energy Agcy, Minist Int Trade & ind, Japan, Sci Council Japan, Kyoto Prefectural Govt, Osaka Prefectural Govt, Nara Prefectural Govt, Federat Econ Org, Kansai Econ Federat, Chem Soc Japan, Soc Chem Engineers, Japan, Japan Soc Energy & Resources, Japan Soc Biosci Biotechnol & Agrochem, Japan Acad Engn, Federat Elect Power Co, Japan Iron & Steel Federat, Japan Automobile Manufacturers Assoc inc, Petr Assoc Japan, Japan Chem Ind Assoc, Japan Gas Assoc, Japan Soc Ind Machinery Manufacturers, Cement Assoc Japan, Engn Adv Assoc Japan AB Deep saline aquifers were investigated as potential disposal sites for CO2. The capacity of deep aquifers for CO2 disposal in the U.S. is highly uncertain. A rough estimate, derived from global estimates, is 5-500 Gt of CO2. Saline aquifers underlie the regions in the U.S. where most utility power plants are situated. Therefore, approximately 65 percent of CO2, from power plants could possibly be injected directly into deep saline aquifers below these plants, without the need for long pipelines. RP BERGMAN, PD (reprint author), US DOE,PITTSBURGH ENERGY TECHNOL CTR,POB 10940,PITTSBURGH,PA 15236, USA. NR 0 TC 76 Z9 79 U1 2 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0196-8904 J9 ENERG CONVERS MANAGE JI Energy Conv. Manag. PD JUN-SEP PY 1995 VL 36 IS 6-9 BP 523 EP 526 DI 10.1016/0196-8904(95)00058-L PG 4 WC Thermodynamics; Energy & Fuels; Mechanics SC Thermodynamics; Energy & Fuels; Mechanics GA RD193 UT WOS:A1995RD19300035 ER PT J AU OGATA, T YANAGIDA, S BRUNSCHWIG, BS FUJITA, E AF OGATA, T YANAGIDA, S BRUNSCHWIG, BS FUJITA, E TI MECHANISTIC AND KINETIC-STUDIES OF COBALT MACROCYCLES IN A PHOTOCHEMICAL, CO2 REDUCTION SYSTEM SO ENERGY CONVERSION AND MANAGEMENT LA English DT Article; Proceedings Paper CT 2nd International Conference on Carbon Dioxide Removal CY OCT 24-27, 1994 CL KYOTO, JAPAN SP Res Inst Innovat Technol Earth, New Energy & Ind Technol Dev Org, Int Energy Agcy, Minist Int Trade & ind, Japan, Sci Council Japan, Kyoto Prefectural Govt, Osaka Prefectural Govt, Nara Prefectural Govt, Federat Econ Org, Kansai Econ Federat, Chem Soc Japan, Soc Chem Engineers, Japan, Japan Soc Energy & Resources, Japan Soc Biosci Biotechnol & Agrochem, Japan Acad Engn, Federat Elect Power Co, Japan Iron & Steel Federat, Japan Automobile Manufacturers Assoc inc, Petr Assoc Japan, Japan Chem Ind Assoc, Japan Gas Assoc, Japan Soc Ind Machinery Manufacturers, Cement Assoc Japan, Engn Adv Assoc Japan AB Photoreduction of CO2 using p-terphenyl as a photosensitizer and a tertiary amine as a sacrificial electron donor is efficiently catalyzed by cobalt macrocycles in methanolic acetonitrile solutions. Studies of the mechanism of CO2 reduction in the catalytic system using Co(II)HMD(2+) (HMD = 5,7,7,12, 14,14-hexamethyl-1,4,8,11-tetraazacyclot-4,11-diene) have been carried out using continuous and flash photolysis techniques. The transient spectra reveal the formation of p-terphenyl radical anion, the Co(I)HMD(+) complex, the 5-coordinate [Co(I)HMD-CO2](+) complex, and the six coordinate [S-Co(III)HMD-(CO22-)](+) complex (S = solvent) in the catalytic system. The importance of changes in the Co-II/I reduction potential and the geometry around the Co center was studied by the use of several different complexes. C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. RI Brunschwig, Bruce/G-4249-2011; Fujita, Etsuko/D-8814-2013 NR 0 TC 6 Z9 6 U1 0 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0196-8904 J9 ENERG CONVERS MANAGE JI Energy Conv. Manag. PD JUN-SEP PY 1995 VL 36 IS 6-9 BP 669 EP 672 DI 10.1016/0196-8904(95)00094-T PG 4 WC Thermodynamics; Energy & Fuels; Mechanics SC Thermodynamics; Energy & Fuels; Mechanics GA RD193 UT WOS:A1995RD19300071 ER PT J AU ZEILER, KG HEACOX, DA TOON, ST KADAM, KL BROWN, LM AF ZEILER, KG HEACOX, DA TOON, ST KADAM, KL BROWN, LM TI THE USE OF MICROALGAE FOR ASSIMILATION AND UTILIZATION OF CARBON-DIOXIDE FROM FOSSIL FUEL-FIRED POWER-PLANT FLUE-GAS SO ENERGY CONVERSION AND MANAGEMENT LA English DT Article; Proceedings Paper CT 2nd International Conference on Carbon Dioxide Removal CY OCT 24-27, 1994 CL KYOTO, JAPAN SP Res Inst Innovat Technol Earth, New Energy & Ind Technol Dev Org, Int Energy Agcy, Minist Int Trade & ind, Japan, Sci Council Japan, Kyoto Prefectural Govt, Osaka Prefectural Govt, Nara Prefectural Govt, Federat Econ Org, Kansai Econ Federat, Chem Soc Japan, Soc Chem Engineers, Japan, Japan Soc Energy & Resources, Japan Soc Biosci Biotechnol & Agrochem, Japan Acad Engn, Federat Elect Power Co, Japan Iron & Steel Federat, Japan Automobile Manufacturers Assoc inc, Petr Assoc Japan, Japan Chem Ind Assoc, Japan Gas Assoc, Japan Soc Ind Machinery Manufacturers, Cement Assoc Japan, Engn Adv Assoc Japan DE CARBON DIOXIDE; MICROALGAE; FOSSIL FUEL COMBUSTION; SOX; NOX AB The accumulation of carbon dioxide in the atmosphere, primarily as a result of the combustion of fossil fuels, has been linked to potential global climate change. Capture and utilization of the carbon dioxide by microalgae has emerged as a promising technology to help reduce emissions from fossil fuel-fired power plants. Microalgae are of particular interest because of their rapid growth rates and tolerance to varying environmental conditions. We are currently conducting experiments on the growth of microalgae exposed to simulated flue gas. This technology is envisioned for open raceway cultivation ponds as a low cost implementation strategy. Coupling the production of fuel or commodity chemicals with the use of flue gas carbon dioxide as a microalgal nutrient is envisioned to be a cost-effective method of reducing the amount of carbon dioxide contributed to the atmosphere by fossil fuel-fired power plants. RP ZEILER, KG (reprint author), NATL RENEWABLE ENERGY LAB,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 0 TC 67 Z9 72 U1 1 U2 15 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0196-8904 J9 ENERG CONVERS MANAGE JI Energy Conv. Manag. PD JUN-SEP PY 1995 VL 36 IS 6-9 BP 707 EP 712 DI 10.1016/0196-8904(95)00103-K PG 6 WC Thermodynamics; Energy & Fuels; Mechanics SC Thermodynamics; Energy & Fuels; Mechanics GA RD193 UT WOS:A1995RD19300080 ER PT J AU STEINBERG, M AF STEINBERG, M TI THE HY-C PROCESS (THERMAL-DECOMPOSITION OF NATURAL-GAS) POTENTIALLY THE LOWEST COST SOURCE OF HYDROGEN WITH THE LEAST CO2 EMISSION SO ENERGY CONVERSION AND MANAGEMENT LA English DT Article; Proceedings Paper CT 2nd International Conference on Carbon Dioxide Removal CY OCT 24-27, 1994 CL KYOTO, JAPAN SP Res Inst Innovat Technol Earth, New Energy & Ind Technol Dev Org, Int Energy Agcy, Minist Int Trade & ind, Japan, Sci Council Japan, Kyoto Prefectural Govt, Osaka Prefectural Govt, Nara Prefectural Govt, Federat Econ Org, Kansai Econ Federat, Chem Soc Japan, Soc Chem Engineers, Japan, Japan Soc Energy & Resources, Japan Soc Biosci Biotechnol & Agrochem, Japan Acad Engn, Federat Elect Power Co, Japan Iron & Steel Federat, Japan Automobile Manufacturers Assoc inc, Petr Assoc Japan, Japan Chem Ind Assoc, Japan Gas Assoc, Japan Soc Ind Machinery Manufacturers, Cement Assoc Japan, Engn Adv Assoc Japan AB The abundance of natural gas as a natural resource and its high hydrogen content make it a prime feedstock candidate for a low cost supply of hydrogen. The thermal decomposition of natural gas by methane decomposition produces carbon and hydrogen. Conventional steam reforming of natural gas produces CO2 and hydrogen and requires more process energy. Methane decomposition produces the least amount of greenhouse gas CO2 emissions per unit of hydrogen and can be totally eliminated when the carbon produced is sequestered or sold as a material. RP STEINBERG, M (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 0 TC 16 Z9 19 U1 3 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0196-8904 J9 ENERG CONVERS MANAGE JI Energy Conv. Manag. PD JUN-SEP PY 1995 VL 36 IS 6-9 BP 791 EP 796 DI 10.1016/0196-8904(95)00123-U PG 6 WC Thermodynamics; Energy & Fuels; Mechanics SC Thermodynamics; Energy & Fuels; Mechanics GA RD193 UT WOS:A1995RD19300100 ER PT J AU LAIRD, G KENNEDY, TC AF LAIRD, G KENNEDY, TC TI MICROMECHANICS OF COMPOSITE-MATERIALS UNDER COMPRESSIVE LOADING SO ENGINEERING FRACTURE MECHANICS LA English DT Article ID BRITTLE POROUS SOLIDS; MECHANICAL-BEHAVIOR; CERAMIC COMPOSITES; MATRIX COMPOSITES; STRESS STATES; FAILURE; INTERFACE; INCLUSION; FRACTURE; FRICTION AB A common thread joining many engineered materials used dominantly under compressive loading is the presence of a high modulus secondary phase, either fiber or particulate, embedded within a lower modulus matrix phase. To improve their toughness, a frictional or a less-than-coherent interface is strived for in the manufacture of these composite materials. To form a better understanding of the complex behavior of these materials, numerical and experimental models were developed by the U.S. Bureau of Mines that allowed a wide range of micromechanical and fracture behavior to be investigated under compressive loading. Finite element modeling illustrates the effects of interfacial friction and elastic moduli mismatch between the reinforcement and the matrix. Additional results show that packing density or non-dilute concentration of reinforcements have little effect upon the micromechanical behavior under uniaxial compressive loading. These numerical results were then substantiated:by crack initiation experiments on model composite materials. C1 OREGON STATE UNIV,DEPT MECH ENGN,CORVALLIS,OR 97331. RP LAIRD, G (reprint author), US BUR MINES,ALBANY RES CTR,ALBANY,OR 97321, USA. NR 50 TC 5 Z9 5 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0013-7944 J9 ENG FRACT MECH JI Eng. Fract. Mech. PD JUN PY 1995 VL 51 IS 3 BP 417 EP 430 DI 10.1016/0013-7944(94)00268-M PG 14 WC Mechanics SC Mechanics GA RC024 UT WOS:A1995RC02400007 ER PT J AU Campbell, K AF Campbell, Katherine TI Some statistical and conceptual issues in the detection of low-level environmental pollutants Discussion SO ENVIRONMENTAL AND ECOLOGICAL STATISTICS LA English DT Article C1 Univ Calif Los Alamos Natl Lab, Geoanal Grp, Los Alamos, NM 87545 USA. RP Campbell, K (reprint author), Univ Calif Los Alamos Natl Lab, Geoanal Grp, Los Alamos, NM 87545 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1352-8505 EI 1573-3009 J9 ENVIRON ECOL STAT JI Environ. Ecol. Stat. PD JUN PY 1995 VL 2 IS 2 BP 145 EP 147 DI 10.1007/BF00680299 PG 4 WC Environmental Sciences; Mathematics, Interdisciplinary Applications; Statistics & Probability SC Environmental Sciences & Ecology; Mathematics GA V31TK UT WOS:000208905700005 ER PT J AU BARBER, TE FISHER, WG WACHTER, EA AF BARBER, TE FISHER, WG WACHTER, EA TI ONLINE MONITORING OF AROMATIC-HYDROCARBONS USING A NEAR-ULTRAVIOLET FIBER OPTIC ABSORPTION SENSOR SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article AB A prototype ultraviolet absorption sensor was used to continuously monitor the composition of vapor extractant from soil remediation wells at the Lawrence Livermore Dynamic Underground Stripping Site over a period of five weeks. The sensor measured absorption in the spectral region of 230.0-300.0 nm, allowing direct detection of benzene and its derivatives (including toluene, xylenes, and ethylbenzene). The spectra of these compounds contain considerable fine structure, and deconvolution of the mixture spectra allowed a quantitative determination of the concentration of benzene to be made. Relative levels of total aromatic hydrocarbons were also determined. The trends measured by the on-line sensor were in agreement with standard off-line laboratory analyses and were obtained continuously in realtime. Continuous monitoring allowed transient events as well as mid- to long-term trends in the extraction process to be measured. C1 OAK RIDGE NATL LAB,HLTH SCI RES DIV,OAK RIDGE,TN 37831. NR 15 TC 11 Z9 12 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD JUN PY 1995 VL 29 IS 6 BP 1576 EP 1580 DI 10.1021/es00006a021 PG 5 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA RB131 UT WOS:A1995RB13100038 PM 22276880 ER PT J AU GUNDEL, LA MAHANAMA, KRR DAISEY, JM AF GUNDEL, LA MAHANAMA, KRR DAISEY, JM TI SEMIVOLATILE AND PARTICULATE POLYCYCLIC AROMATIC-HYDROCARBONS IN ENVIRONMENTAL TOBACCO-SMOKE - CLEANUP, SPECIATION, AND EMISSION FACTORS SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID CIGARETTE-SMOKE; CHROMATOGRAPHIC DETERMINATION; MATTER; BENZOPYRENE; MAINSTREAM; INDOOR; AIR AB Studies of phase distributions and emission factors for polycyclic aromatic hydrocarbons (PAH) in environmental tobacco smoke (ETS) require collection and analysis of very small samples. To achieve the necessary selectivity and sensitivity, a method has been devised and tested for extraction and cleanup of gas- and particulate-phase ETS samples. Gas-phase species were trapped by polymeric sorbents, and particles were trapped on filters. The samples were extracted with hot cyclohexane, concentrated, and passed through silica solid-phase extraction columns for cleanup. After solvent change, the PAH were determined by high-performance liquid chromatography with two programmed fluorescence detectors. PAH concentrations in 15-mg aliquots of National Institute of Standards and Technology Standard Reference Material (SRM) 1649 (urban dust/organics) agreed well with published values. Relative precision at the 95% confidence level was 8% for SRM 1649 and 20% for replicate samples (5 mg) of ETS particles. Emission factors have been measured for a range of gas- and particulate-phase polycyclic aromatic hydrocarbons in ETS. The emission factors per cigarette were 13.0 +/- 0.5 mg of particulate matter, 11.2 +/- 0.9 mu g for gas-phase naphthalene, and 74 +/- 10 ng for particulate benzo[a]pyrene. RP GUNDEL, LA (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV ENERGY & ENVIRONM,INDOOR ENVIRONM PROGRAM,BERKELEY,CA 94720, USA. NR 21 TC 39 Z9 41 U1 3 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD JUN PY 1995 VL 29 IS 6 BP 1607 EP 1614 DI 10.1021/es00006a026 PG 8 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA RB131 UT WOS:A1995RB13100043 PM 22276885 ER PT J AU WANG, SJ LIN, WY HSIEH, BT SHEN, LH TSAI, ZT TING, G KNAPP, FF AF WANG, SJ LIN, WY HSIEH, BT SHEN, LH TSAI, ZT TING, G KNAPP, FF TI RE-188 SULFUR COLLOID AS A RADIATION SYNOVECTOMY AGENT SO EUROPEAN JOURNAL OF NUCLEAR MEDICINE LA English DT Article DE RADIATION SYNOVECTOMY; RE-188 COLLOID; RHEUMATOID ARTHRITIS ID RHEUMATOID-ARTHRITIS; RADIOPHARMACEUTICALS; Y-90 AB Radiation synovectomy has been shown to be an effective treatment for the rheumatoid arthritic knee. In this study, we evaluated the suitability of rhenium-188 as a radiation synovectomy agent. In addition, we were successful in labelling sulphur colloid with Re-188. In vitro stability tests revealed that more than 95% of the Re-188 remained in colloid form over a 3-day period. Intra-articular injection of Re-188 sulphur colloid into arthritic rabbit joints was followed by gamma camera imaging to quantify the leakage. The mean retention percentages of Re-188 colloid in arthritic knees were 93.7% (+/-1.4%), 90.8% (+/-1.7%) and 87.2% (+/-0.6%) at 1 h, 1 day and 2 days, respectively. A biodistribution study of the arthritic rabbits revealed that the highest activity outside the knees was in the liver and the kidneys. Our preliminary results indicate that Re-188 sulphur colloid may be an effective radiopharmaceutical for radiation synovectomy. C1 INST NUCL ENERGY RES,LUNGTAN 32500,TAIWAN. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NATL YANG MING MED COLL,TAIPEI 11221,TAIWAN. RP WANG, SJ (reprint author), TAICHUNG VET GEN HOSP,DEPT NUCL MED,160 SEC 3,TAICHUNG HARBOR RD,TAICHUNG 407,TAIWAN. NR 17 TC 46 Z9 53 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0340-6997 J9 EUR J NUCL MED JI Eur. J. Nucl. Med. PD JUN PY 1995 VL 22 IS 6 BP 505 EP 507 PG 3 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA RF150 UT WOS:A1995RF15000003 PM 7556293 ER PT J AU CHIN, RP BLASE, X SHEN, YR LOUIE, SG AF CHIN, RP BLASE, X SHEN, YR LOUIE, SG TI ANHARMONICITY AND LIFETIME OF THE CH STRETCH MODE ON DIAMOND H/C(111)-(1X1) SO EUROPHYSICS LETTERS LA English DT Article ID SUM-FREQUENCY GENERATION; SURFACE; VIBRATION; SI(111); PHONON AB The anharmonicity and lifetime of the CH stretching vibration of the H-terminated diamond H/C(111)-(1 x 1) surface are investigated. It is found that the nu1 --> 2 transition is 110 cm-1 lower than the nu0 --> 1 fundamental. Theoretical calculations show good agreement with the experimental observations and predict the existence of a strongly bound two-phonon bound state. A vibrational lifetime of 19 ps and a similar ground-state recovery time are measured. C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP CHIN, RP (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 17 TC 65 Z9 65 U1 0 U2 7 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD JUN 1 PY 1995 VL 30 IS 7 BP 399 EP 404 DI 10.1209/0295-5075/30/7/004 PG 6 WC Physics, Multidisciplinary SC Physics GA RC417 UT WOS:A1995RC41700004 ER PT J AU WINISTORFER, PM XU, W WIMMER, R AF WINISTORFER, PM XU, W WIMMER, R TI APPLICATION OF A DRILL RESISTANCE TECHNIQUE FOR DENSITY PROFILE MEASUREMENT IN WOOD COMPOSITE PANELS SO FOREST PRODUCTS JOURNAL LA English DT Note ID PRODUCTS AB The vertical density profiles of medium density fiberboard, particleboard, and oriented strandboard were measured by a drill resistance technique and were compared with the vertical density profiles of the same specimens measured with a scanning gamma ray method. The drill resistance technique as applied to composite panel products uses a linear relationship between the panel density and the drill resistance values. The drill resistance technique was found to be a good measure of the vertical density profile of composite panel materials, especially for medium density fiberboard. The technique is inexpensive, safe, portable and has the potential to be adopted as an on-line density profile method. C1 UNIV AGR FORESTRY & RENEWABLE RESOURCES,A-1180 VIENNA,AUSTRIA. OAK RIDGE NATL LAB,OAK RIDGE,TN. RP WINISTORFER, PM (reprint author), UNIV TENNESSEE,INST AGR,DEPT FORESTRY FISHERIES & WILDLIFE,POB 1071,KNOXVILLE,TN 37901, USA. NR 10 TC 10 Z9 12 U1 0 U2 1 PU FOREST PRODUCTS SOC PI MADISON PA 2801 MARSHALL COURT, MADISON, WI 53705-2295 SN 0015-7473 J9 FOREST PROD J JI For. Prod. J. PD JUN PY 1995 VL 45 IS 6 BP 90 EP 93 PG 4 WC Forestry; Materials Science, Paper & Wood SC Forestry; Materials Science GA RD307 UT WOS:A1995RD30700014 ER PT J AU WIMER, JG WILLIAMS, MC ARCHER, DH OSTERLE, JF AF WIMER, JG WILLIAMS, MC ARCHER, DH OSTERLE, JF TI ELECTROCHEMICAL MEMBRANE SEPARATION DEVICES AND THE EFFECT OF NETWORKING SO GAS SEPARATION & PURIFICATION LA English DT Article DE ELECTROCHEMICAL MEMBRANE; SEPARATION DEVICE; FUEL CELL; NETWORK; MOLTEN CARBONATE ID DESIGN AB The US Department of Energy's Morgantown Energy Technology Center (METC) sponsors the research and development of two technologies involving electrochemical membranes: fuel cells and separation devices. METC also works towards developing electric power generation systems which utilize both of these technologies. This paper discusses the general theory and operation of electrochemical membrane separation devices, the advantages of networking them, and some potential applications. C1 CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213. RP WIMER, JG (reprint author), US DOE,MORGANTOWN,WV 26507, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0950-4214 J9 GAS SEP PURIF JI Gas Sep. Purif. PD JUN PY 1995 VL 9 IS 2 BP 121 EP 124 DI 10.1016/0950-4214(95)93949-K PG 4 WC Engineering, Chemical SC Engineering GA RA827 UT WOS:A1995RA82700007 ER PT J AU PANJEHPOUR, M OVERHOLT, BF SCHMIDHAMMER, JL FARRIS, C BUCKLEY, PF VO-DINH, T AF PANJEHPOUR, M OVERHOLT, BF SCHMIDHAMMER, JL FARRIS, C BUCKLEY, PF VO-DINH, T TI SPECTROSCOPIC DIAGNOSIS OF ESOPHAGEAL CANCER - NEW CLASSIFICATION MODEL, IMPROVED MEASUREMENT SYSTEM SO GASTROINTESTINAL ENDOSCOPY LA English DT Article ID LASER-INDUCED FLUORESCENCE; TISSUE; LUNG; DYSPLASIA; BREAST AB Laser-induced fluorescence spectroscopy was used to measure fluorescence emission of normal and malignant tissue during endoscopy in patients with esophageal cancer and volunteers with normal esophagus. The spectroscopy system consisted of a nitrogen-pumped dye-laser tuned at 410 nm for excitation source, an optical multichannel analyzer for spectrum analysis, and a fiberoptic probe designed for both the delivery of excitation light and the collection of fluorescence emission from tissue. The fluorescence lineshape of each spectrum was determined and sampled at 15-nm intervals from 430 to 716 nm. A calibration set of spectra from normal and malignant spectra was selected. Using stepwise discriminate analysis, significant wavelengths that separated normal from malignant spectra were selected. The intensities at these wavelengths were used to formulate a classification model using linear discriminate analysis. The model was then used to classify additional tissue spectra from 26 malignant and 108 normal sites into either normal or malignant spectra. A sensitivity of 100% and specificity of 98% were obtained. C1 OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. UNIV TENNESSEE, DEPT STAT, KNOXVILLE, TN 37996 USA. RP PANJEHPOUR, M (reprint author), THOMPSON CANC SURVIVAL CTR, CTR LASER, 1915 WHITE AVE, KNOXVILLE, TN 37916 USA. NR 11 TC 82 Z9 85 U1 0 U2 0 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 0016-5107 J9 GASTROINTEST ENDOSC JI Gastrointest. Endosc. PD JUN PY 1995 VL 41 IS 6 BP 577 EP 581 DI 10.1016/S0016-5107(95)70194-X PG 5 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA RD417 UT WOS:A1995RD41700009 PM 7672552 ER PT J AU SCHRAG, DP DEPAOLO, DJ RICHTER, FM AF SCHRAG, DP DEPAOLO, DJ RICHTER, FM TI RECONSTRUCTING PAST SEA-SURFACE TEMPERATURES - CORRECTING FOR DIAGENESIS OF BULK MARINE CARBONATE SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID SR ISOTOPIC EVOLUTION; OXYGEN ISOTOPE; PALEOCEANOGRAPHIC INDICATORS; CALCAREOUS NANNOFOSSILS; OCEANIC-CRUST; SEDIMENTS; SEAWATER; WATERS; MODEL AB A numerical model which describes oxygen isotope exchange during burial and recrystallization of deep-sea carbonate is used to obtain information on how sea surface temperatures have varied in the past by correcting measured delta(18)O values of bulk carbonate for diagenetic overprinting. Comparison of bulk carbonate and planktonic foraminiferal delta(18)O records from ODP site 677A indicates that the oxygen isotopic composition of bulk carbonate does reflect changes in sea surface temperature and delta(18)O. At ODP Site 690, we calculate that diagenetic effects are small, and that both bulk carbonate and planktonic foraminiferal delta(18)O records accurately reflect Paleogene warming of high latitude surface oceans, biased from diagenesis by no more than 1 degrees C. The same is likely to be true for other high latitude sites where sedimentation rates are low. At DSDP sites 516 and 525, the effects of diagenesis are more significant. Measured delta(18)O values of Eocene bulk carbonates are more than 2 parts per thousand lower at deeply buried site 516 than at site 525, consistent with the model prediction that the effects of diagenesis should be proportional to sedimentation rate. Model-corrections reconcile the differences in the data between the two sites; the resulting paleotemperature reconstruction indicates a 4 degrees C cooling of mid-latitude surface oceans since the Eocene. At low latitudes, the contrast in temperature between the ocean surface and bottom makes the carbonate delta(18)O values particularly sensitive to diagenetic effects; most of the observed variations in measured delta(18)O values are accounted for by diagenetic effects rather than by sea surface temperature variations. We show that the data are consistent with constant equatorial sea surface temperatures through most of the Cenozoic, with the possible exception of the early Eocene, when slightly higher temperatures are indicated. We suggest that the lower equatorial sea surface temperatures for the Eocene and Oligocene reported in other oxygen isotope studies are artifacts of diagenetic recrystallization, and that it is impossible to reconstruct accurately equatorial sea surface temperatures without explicitly accounting for diagenetic overprinting. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV EARTH SCI,BERKELEY,CA 94720. UNIV CHICAGO,DEPT GEOPHYS SCI,CHICAGO,IL 60637. RP SCHRAG, DP (reprint author), UNIV CALIF BERKELEY,DEPT GEOL & GEOPHYS,BERKELEY CTR ISOTOPE GEOCHEM,BERKELEY,CA 94720, USA. NR 43 TC 172 Z9 175 U1 3 U2 28 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD JUN PY 1995 VL 59 IS 11 BP 2265 EP 2278 DI 10.1016/0016-7037(95)00105-9 PG 14 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA RE522 UT WOS:A1995RE52200010 ER PT J AU KNAUSS, KG COPENHAVER, SA AF KNAUSS, KG COPENHAVER, SA TI THE SOLUBILITY OF P-XYLENE IN WATER AS A FUNCTION OF TEMPERATURE AND PRESSURE AND CALCULATED THERMODYNAMIC QUANTITIES SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID ALKYLBENZENES; HYDROCARBONS; DEPENDENCE; TRANSPORT; CONSTANTS; SOLUTES; BENZENE; GASES AB An experimental approach was developed to measure the mutual solubilities of organic fluids and water over a wide range in temperature and pressure. By using a gold bag, rocking autoclave, and a precision high pressure liquid chromatography pump, samples of both equilibrated fluids may be obtained. Using this technique the solubility of liquid p-xylene in water was measured as a function of temperature and pressure from 298 to 423 K (at constant pressure) and from 0.1 to 50 MPa (at constant temperature). The results were used to calculate the partial molal thermodynamic quantities: Delta (G) over bar(soln), Delta (H) over bar(soln), Delta (S) over bar(soln), Delta (C) over bar(psoln), and Delta (V) over bar(soln). Calculated values for these quantities at 298 K are: Delta (G) over bar(soln) = 15.92 (+/-.13) kJ/mol,Delta (H) over bar(soln) = 1.643 (+/-.214) kJ/mol, Delta (S) over bar(soln) = -47.90 (+/-.72) J/mol-K, Delta (C) over bar(psoln) = 214.7 (+/-3.8) J/mol-K, and Delta (V) over bar(soln) = 31.08 (+/-3.80) cm(3)/mol. RP KNAUSS, KG (reprint author), LAWRENCE LIVERMORE NATL LAB,DIV EARTH SCI,LIVERMORE,CA 94550, USA. RI knauss, kevin/K-2827-2012 NR 33 TC 16 Z9 17 U1 2 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD JUN PY 1995 VL 59 IS 12 BP 2443 EP 2448 DI 10.1016/0016-7037(95)00138-7 PG 6 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA RF202 UT WOS:A1995RF20200004 ER PT J AU MURPHY, EM ZACHARA, JM AF MURPHY, EM ZACHARA, JM TI THE ROLE OF SORBED HUMIC SUBSTANCES ON THE DISTRIBUTION OF ORGANIC AND INORGANIC CONTAMINANTS IN GROUNDWATER SO GEODERMA LA English DT Article ID POLYCYCLIC AROMATIC-HYDROCARBONS; MOLECULAR-WEIGHT; WEAK POLYELECTROLYTES; ALUMINUM-OXIDE; HYDROUS OXIDES; FULVIC-ACIDS; ADSORPTION; SORPTION; BINDING; WATER AB Mineral-bound humic substances modify inorganic surfaces in subsurface sediments, changing the nature and number of complexation sites for contaminants. Because of adsorptive enrichment, the reactive surface area or site concentration contributed by mineral-bound humic substances can exceed that of dissolved or colloidal humic substances by two orders of magnitude. Mineral-bound humic materials may, therefore, provide a major sink for the removal of contaminants in groundwater. The reactivity of the humic substance is primarily determined by the structural and bulk chemical properties of the humic substance and the aqueous solution chemistry. Organic and inorganic contaminants sorb readily to mineral-bound humic substances. The sorption of hydrophobic organic compounds increases as ionic strength decreases, is enhanced by divalent cations, and displays non-linear isotherms and competitive adsorption behavior. Collectively, these results suggest that hydrophobic adsorption, rather than phase partitioning, is the primary sorption mechanism for neutral organic molecules on these particle coatings. Mineral-bound humic substances augment, rather than change, the intrinsic complexation properties of mineral surfaces for metal cations. The degree of sorption enhancement promoted by mineral-bound organic material varies strongly with pH and depends on the magnitude of the stability constants between the metal cation and the humic substance, the strength and magnitude of adsorption of the humic substance by the mineral surface, and the extent of aqueous complex formation between the non-sorbed humic substance and metal. The simplest sorption model for humate-modified surfaces is the linear additivity model (LAM). Sorption data for certain hydrophobic organic compounds and metal cations appear to conform to this model. RP MURPHY, EM (reprint author), PACIFIC NW LAB, INTERFACIAL GEOMCHEM GRP, RICHLAND, WA 99352 USA. NR 93 TC 147 Z9 162 U1 8 U2 28 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0016-7061 J9 GEODERMA JI Geoderma PD JUN PY 1995 VL 67 IS 1-2 BP 103 EP 124 DI 10.1016/0016-7061(94)00055-F PG 22 WC Soil Science SC Agriculture GA RF165 UT WOS:A1995RF16500008 ER PT J AU JARDINE, PM TAYLOR, DL AF JARDINE, PM TAYLOR, DL TI FATE AND TRANSPORT OF ETHYLENEDIAMINETETRAACETATE CHELATED CONTAMINANTS IN SUBSURFACE ENVIRONMENTS SO GEODERMA LA English DT Article ID HETEROGENEOUS POROUS-MEDIA; METAL HYDROUS OXIDES; AGENTS; ADSORPTION; MANGANESE; ALUMINUM; HEMATITE; WASTES AB Decontamination efforts during weapons production has historically involved the generation of mixed waste that was composed of organically chelated radionuclides. Waste disposal has traditionally involved shallow land burial, and not until recently has the subsurface migration of the organically complexed contaminants (co-contaminants) become a significant concern. The objective of this study was to provide an improved understanding of the geochemical processes that control the fate and transport of ethylenediaminetetraacetate (EDTA) chelated contaminants in heterogeneous subsurface environments. A batch technique was utilized to investigate the kinetics and mechanisms of Co(II)EDTA2- and Sr(II)EDTA2- interaction with naturally heterogeneous saprolites and laboratory prepared pyrolusite (beta-MnO2) coated SiO2. The interaction of Co(II)EDTA2- with the subsurface media was characterized by a Mn-oxide induced oxidation of the co-contaminant to form Co(III)EDTA-. The Co(III)EDTA- complex exhibited time-dependent adsorption on the subsurface material, and this adsorption process was unaffected by differences in ionic strength. The oxidation reaction of Co(II)EDTA2- to Co(III)EDTA- by subsurface Mn-oxides was catalytic such that significantly more Co(II)EDTA2- was oxidized relative to the net Mn(IV) reduced. The interaction of SrEDTA2- with the subsurface media was characterized by a solid phase induced dissociation of the co-contaminant. Subsurface Fe and Al sources effectively dissociated the SrEDTA2- complex, and Fe(III)EDTA- and Al(III)EDTA- were formed. Competition of Al and Fe for complex formation with EDTA was time-dependent and controlled by the availability of the Al and Fe sources and the stability of the metal-EDTA complexes. The contaminant Sr remained unchelated and existed as a reactive, divalent cation. The implications of the EDTA chelate on the fate and transport of contaminants in subsurface environments are discussed. RP JARDINE, PM (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,POB 2008,OAK RIDGE,TN 37831, USA. NR 26 TC 30 Z9 30 U1 2 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0016-7061 J9 GEODERMA JI Geoderma PD JUN PY 1995 VL 67 IS 1-2 BP 125 EP 140 DI 10.1016/0016-7061(94)00059-J PG 16 WC Soil Science SC Agriculture GA RF165 UT WOS:A1995RF16500009 ER PT J AU MONTEMAGNO, CD PYRAKNOLTE, LJ AF MONTEMAGNO, CD PYRAKNOLTE, LJ TI POROSITY OF NATURAL FRACTURE NETWORKS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article AB Volumetric imaging is used to determine the three-dimensional topology of natural fracture networks in coal subjected to reservoir conditions Computerized X-ray tomographic data and bulk porosity measurements are combined with image processing techniques to quantify the porosity distribution of three-dimensional fracture networks in two coal cores. Under in-situ conditions, the porosity of the fracture networks in the cores is less than one-tenth of a percent. In addition, the porosity varies by +/- 10% over depth intervals of approximately 16 mm. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP MONTEMAGNO, CD (reprint author), UNIV NOTRE DAME,DEPT CIVIL ENGN & GEOL SCI,NOTRE DAME,IN 46556, USA. NR 11 TC 26 Z9 26 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JUN 1 PY 1995 VL 22 IS 11 BP 1397 EP 1400 DI 10.1029/95GL01098 PG 4 WC Geosciences, Multidisciplinary SC Geology GA RB550 UT WOS:A1995RB55000021 ER PT J AU TIDWELL, VC GLASS, RJ PEPLINSKI, W AF TIDWELL, VC GLASS, RJ PEPLINSKI, W TI LABORATORY INVESTIGATION OF MATRIX IMBIBITION FROM A FLOWING FRACTURE SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID ABSORPTION; WATER AB Predicting fluid flow and transport behavior in unsaturated, fractured rock is greatly simplified where matrix imbibition can be modeled as a linear function of the square root of time (t(1/2)); however, such treatment implicitly assumes homogenous matrix properties. To investigate matrix heterogeneity effects, we perform a simple experiment in which xray imaging is used to measure the imbibition of water from a flowing fracture into a slab of volcanic tuff. Experimental results show matrix imbibition to follow a linear t(1/2) relationship even though the saturated hydraulic conductivity of the tuff varies by over four orders of magnitude. C1 SPECTRA TECH INC,RES INST,ALBUQUERQUE,NM. RP TIDWELL, VC (reprint author), SANDIA NATL LABS,DEPT GEOHYDROL 6115,POB 5800,MS-1324,ALBUQUERQUE,NM 87185, USA. NR 13 TC 12 Z9 12 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JUN 1 PY 1995 VL 22 IS 11 BP 1405 EP 1408 DI 10.1029/95GL01097 PG 4 WC Geosciences, Multidisciplinary SC Geology GA RB550 UT WOS:A1995RB55000023 ER PT J AU GLASS, RJ NICHOLL, MJ AF GLASS, RJ NICHOLL, MJ TI QUANTITATIVE VISUALIZATION OF ENTRAPPED PHASE DISSOLUTION WITHIN A HORIZONTAL FLOWING FRACTURE SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article AB An experiment was conducted to demonstrate the utility of quantitative fracture flow visualization techniques in the study of entrapped fluid phase (air) dissolution into a flowing phase (water) within a horizontal, transparent, analog rough-walled fracture. The fracture aperture field and phase occupancy were measured using light transmission techniques and then combined to calculate bulk water-phase saturation within the fracture as a function of time. Fracture relative permeability as a function of water-phase saturation showed a smooth power law behavior during dissolution. Periodic step pulses of clear water within the dyed water inflow yielded dye concentration fields that demonstrate channeling induced by the entrapped air phase. Clusters of the entrapped air-phase exhibited three types of dissolution behavior: general shrinkage, interfacial recession along cluster appendages, and cluster splitting. Locations for the advance of the wetting phase (water) into a nonwetting entrapped air cluster on its dissolution are not always correlated with either zones of high mass transfer rate (as inferred from gradients in the pulsed dye concentration fields) or with narrow apertures where the wetting phase has been thought to most easily invade. These results suggest that within an individual cluster of the entrapped phase, fluid pressure is at equilibrium and that the path of cluster shrinkage may be controlled primarily by capillary forces resulting from the full three-dimensional curvature that minimizes surface energy of the phase interface. RP GLASS, RJ (reprint author), SANDIA NATL LABS,DEPT GEOHYDROL 6115,MS-1324,ALBUQUERQUE,NM 87185, USA. NR 8 TC 26 Z9 26 U1 1 U2 6 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JUN 1 PY 1995 VL 22 IS 11 BP 1413 EP 1416 DI 10.1029/95GL01491 PG 4 WC Geosciences, Multidisciplinary SC Geology GA RB550 UT WOS:A1995RB55000025 ER EF