FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Harrison, N Mielke, CH Rickel, DG Montgomery, LK Gerst, C Thompson, JD AF Harrison, N Mielke, CH Rickel, DG Montgomery, LK Gerst, C Thompson, JD TI Magnetism and fermiology of kappa-(BEDT-TSF)(2)FeCl4 SO PHYSICAL REVIEW B LA English DT Article ID ANIONS; SALTS; LAMBDA-(BETS)(2)GACL4; MAGNETORESISTANCE; SUPERCONDUCTOR; CONDUCTORS; FECL4; STATE AB Magnetization studies reveal that the ground state of kappa-(BEDT-TSF)(2)FeCl4 is J = 1/2 with weak antiferromagnetic correlations. Quantum oscillation studies indicate that the effective masses of the quasiparticles are considerably enhanced with respect to those of isostructural kappa-(BEDT-TSF)(2)GaCl4. We attribute the mass enhancement to spin fluctuation effects involving the Fe magnetic moments within the inorganic layer. [S0163-1829(98)00615-8]. C1 Univ Calif Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. Indiana Univ, Dept Chem, Bloomington, IN 47405 USA. RP Harrison, N (reprint author), Univ Calif Los Alamos Natl Lab, Natl High Magnet Field Lab, MS-E536, Los Alamos, NM 87545 USA. RI Mielke, Charles/S-6827-2016 OI Mielke, Charles/0000-0002-2096-5411 NR 21 TC 22 Z9 22 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 15 BP 8751 EP 8754 DI 10.1103/PhysRevB.57.8751 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ480 UT WOS:000073219900004 ER PT J AU Sailor, WC Mueller, FM Villeneuve, PR AF Sailor, WC Mueller, FM Villeneuve, PR TI Augmented-plane-wave method for photonic band-gap materials SO PHYSICAL REVIEW B LA English DT Article ID PERIODIC DIELECTRIC STRUCTURES; CRYSTALS; ARRAYS AB We present a numerical method for computing the eigenstates of a photonic band-gap material based on the augmented plane-wave method. The method uses a functional basis set well suited for structures with spherical and cylindrical elements, and allows for fast numerical convergence with a small number of expansion terms. In addition, the method has the ability of dealing with both metallic and dielectric elements without special treatment. The method is applied to an array of long parallel rods with circular cross section. [S0163-1829(98)02516-8]. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. MIT, Cambridge, MA 02139 USA. RP Sailor, WC (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 17 TC 11 Z9 14 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 15 BP 8819 EP 8822 DI 10.1103/PhysRevB.57.8819 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ480 UT WOS:000073219900022 ER PT J AU Mahajan, AV Sala, R Lee, E Borsa, F Kondo, S Johnston, DC AF Mahajan, AV Sala, R Lee, E Borsa, F Kondo, S Johnston, DC TI Li-7 and V-51 NMR study of the heavy-fermion compound LiV2O4 SO PHYSICAL REVIEW B LA English DT Article ID SPINEL COMPOUNDS; MAGNETISM AB Li-7 and V-51 NMR Knight shift, linewidth, spin-lattice, and spin-spin relaxation rate data are reported as a function of temperature T (1.5-800 K and 74-575 K for Li and V nuclei, respectively) in the heavy fermion compound LiV2O4. The Li-7 Knight shift K exhibits a broad maximum at about 25 K and is nearly constant below 4.2 K, as is the linewidth. The V-51 Knight shift is negative at 575 K and it decreases strongly as the temperature is lowered. Above similar to 80 K, both Li-7 and V-51 Knight shifts are proportional to the susceptibility and from the slope the hyperfine coupling constant can be obtained for both nuclei. The Li-7 spin-lattice relaxation rate increases as the temperature is lowered below room temperature reaching a maximum at about 50 K. Below 5 K the relaxation rate decreases linearly with T as for normal metals but with a very high value of the Korringa product (T1T)(-1). Even so, the Li-7 Korringa ratio (KT1T)-T-2/S-Li below similar to 10 K is on the order of unity as in conventional metals, thus indicating heavy Fermi liquid behavior. From an analysis of the Li-7 and V-51 relaxation rate data we infer an approximate square root temperature dependence of the V local moment spin-relaxation rate at high temperatures (T greater than or similar to 50 K). A simplified analysis of the data yields a value of 17 meV for the magnitude of the exchange coupling constant between the local moments and the conduction electrons and 2.3 meV for that between neighboring local moments. Quantitative discrepancies in the Li-7 and V-51 relaxation rates at low T from what is expected for a uniform heavy Fermi liquid indicate that effects such as Kondo effect screening of the V local moment and/or dynamical vanadium t(2g) orbital occupation correlation/ fluctuation effects may be present in our system. [S0163-1829(98)00715-2]. C1 Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India. Univ Pavia, Dipartimento Fis Gen A Volta, I-27100 Pavia, Italy. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Mahajan, AV (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 35 TC 59 Z9 59 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 15 BP 8890 EP 8899 DI 10.1103/PhysRevB.57.8890 PG 10 WC Physics, Condensed Matter SC Physics GA ZJ480 UT WOS:000073219900034 ER PT J AU Wei, SH Zunger, A AF Wei, SH Zunger, A TI Fingerprints of CuPt ordering in III-V semiconductor alloys: Valence-band splittings, band-gap reduction, and x-ray structure factors SO PHYSICAL REVIEW B LA English DT Article ID REFLECTANCE-DIFFERENCE SPECTROSCOPY; SPECIAL QUASIRANDOM STRUCTURES; LONG-RANGE ORDER; OPTICAL-PROPERTIES; GAINP2; STRAIN; DEPENDENCE; PRESSURE AB Spontaneous CuPt ordering induces a band-gap reduction Delta E-g relative to the random alloy, a crystal field splitting Delta(CF) at valence-band maximum, as well as an increase of spin-orbit splitting Delta(SO) We calculate these quantities for AlxIn1-xP, AlxIn1-xAs, GaxIn1-xP, and GaxIn1-xAs using the local density approximation (LDA), as well as the more reliable LDA-corrected formalism. We further provide these values and the valence-band splittings Delta E-12 (between <(Gamma)over bar>(4,5u) and <(Gamma)over bar>((1)(6v))) and Delta E-13 (between <(Gamma)over bar>(4,5v) and <(Gamma)over bar>((2)(6v))) for these materials as a function of the degree eta of long range order. In the absence of an independent measurement of eta, experiment is currently able to deduce only the ratio Delta E-g/Delta(CF). Our LDA-corrected results for this quantity compare favorably with recent experiments for GaxIn1-xP and GaxIn1-xAs, but not for AlxIn1-xP, where our calculation does not support the experimental assignment. The "optical LRO parameter eta" can be obtained by fitting our calculated Delta E-g(eta) to the measured Delta E-g(eta), and by expressing the measured Delta E-12(eta) and Delta E-13(eta) in terms of our calculated Delta(CF)(eta) and Delta(SO)(eta). We also provide the calculated x-ray structure factors for ordered alloys that can be used experimentally to deduce eta independently. [S0163-1829(98)01715-9]. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Wei, SH (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Zunger, Alex/A-6733-2013 NR 43 TC 75 Z9 75 U1 0 U2 8 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 APR 15 PY 1998 VL 57 IS 15 BP 8983 EP 8988 DI 10.1103/PhysRevB.57.8983 PG 6 WC Physics, Condensed Matter SC Physics GA ZJ480 UT WOS:000073219900045 ER PT J AU Luban, M Luscombe, JH AF Luban, M Luscombe, JH TI Dynamical localization of electrons in an aperiodic superlattice SO PHYSICAL REVIEW B LA English DT Article ID SUBMILLIMETER-WAVE EMISSION; BLOCH OSCILLATIONS; IMPURITY; SYSTEMS; FIELDS AB We derive the analytical form of the time-dependent wave function for a single-band tight-binding model of independent conduction electrons within an aperiodic semiconductor superlattice, created by modifications in the composition of a single layer of an otherwise periodic superlattice. While the wave function for long times is known to feature both diffusive and localized behavior, the latter originating in the superlattice aperiodicity,we provide quantitative results for these features for all values of the time. [S0163-1829(98)03215-9]. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. USN, Postgrad Sch, Dept Phys, Monterey, CA 93943 USA. RP Luban, M (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 19 TC 1 Z9 1 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 15 BP 9043 EP 9049 DI 10.1103/PhysRevB.57.9043 PG 7 WC Physics, Condensed Matter SC Physics GA ZJ480 UT WOS:000073219900052 ER PT J AU Lyo, SK AF Lyo, SK TI Quantum oscillations of two-dimensional to two-dimensional tunneling in bilayer electron gases in tilted magnetic fields SO PHYSICAL REVIEW B LA English DT Article ID SYSTEMS; WELLS AB We present a linear-response theory of magnetoquantum oscillations of tunneling conductance between two quasi-two-dimensional layers of electron gases in equilibrium in tilted magnetic fields. Charge-balanced (i.e., symmetric) and charge-imbalanced (i.e., asymmetric) layers are considered. While interlayer resonant tunneling occurs only between the Landau levels with the same quantum number in a purely perpendicular field (B-perpendicular to) in the growth direction, off-diagonal tunneling is induced by an additional in-plane field (B-parallel to) owing to the B-parallel to-induced relative displacement of the centroids of the harmonic (i.e., Landau) wave functions of the two layers. Quantum oscillations of the tunneling conductance are studied as a function of B-perpendicular to and B-parallel to in a tilted field. The result is shown to reduce to a previously established expression in the limit of a purely in-plane field. [S0163-1829(98)07015-5]. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Lyo, SK (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 12 TC 16 Z9 16 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 15 BP 9114 EP 9117 DI 10.1103/PhysRevB.57.9114 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ480 UT WOS:000073219900060 ER PT J AU More, S Berndt, W Bradshaw, AM Stumpf, R AF More, S Berndt, W Bradshaw, AM Stumpf, R TI Ordered phases of potassium on Pt{111}: Experiment and theory SO PHYSICAL REVIEW B LA English DT Article ID SURFACES; AL(111); LEED; ENERGY; NA; PSEUDOPOTENTIALS; RELIABILITY; ADSORPTION; STRESS; ATOMS AB Using low-energy electron diffraction structural analysis and first-principles calculations based on the local-density approximation we have investigated the (root 3x root 3)R30 degrees K and (2X2) K overlayers on Pt{111}. The measured and calculated adsorption geometries agree quantitatively. In both phases the K adatoms occupy threefold symmetric hcp hollow sites, the preference for the hcp site over the fee site being a consequence of the polarization of the surface Pt d electrons. We have not found any indication of K incorporation into the Pt{111} surface, as has been recently suggested. [S0163-1829(98)06412-1]. C1 Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Max Planck Gesell, Fritz Haber Inst, Faradayweg 4-6, D-14195 Berlin, Germany. NR 37 TC 32 Z9 32 U1 1 U2 4 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 APR 15 PY 1998 VL 57 IS 15 BP 9246 EP 9254 DI 10.1103/PhysRevB.57.9246 PG 9 WC Physics, Condensed Matter SC Physics GA ZJ480 UT WOS:000073219900075 ER PT J AU Alouani, M Wills, JM Wilkins, JW AF Alouani, M Wills, JM Wilkins, JW TI Scaling of the L-2,L-3 circular magnetic x-ray dichroism of Fe nitrides SO PHYSICAL REVIEW B LA English DT Article ID FINAL-STATE RULE; ABSORPTION-SPECTRA; TRANSITION-METALS; SUM-RULES; IRON; SPIN; SYSTEMS; NICKEL; CO AB We have implemented the calculation of the x-ray-absorption cross section for left-and right-circularly polarized x-ray beams within the local-density approximation by means of our all-electron full-relativistic and spin-polarized full-potential linear muffin-tin orbital method. We show that the L-2,L-3 circular magnetic x-ray dichroism of Fe, Fe3N, and Fe4N compounds scales to a single curve when divided by the local magnetic moment. Sum rules determine the spin and orbital magnetic moment of iron atoms in these ordered iron nitrides. [S0163-1829(98)07315-9]. C1 Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Strasbourg 1, IPCMS, Strasbourg, France. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Alouani, M (reprint author), Ohio State Univ, Dept Phys, 174 W 18Th Ave, Columbus, OH 43210 USA. RI Alouani, Mebarek/A-9101-2011 OI Alouani, Mebarek/0000-0002-7985-5276 NR 37 TC 30 Z9 30 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP 9502 EP 9506 DI 10.1103/PhysRevB.57.9502 PG 5 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000031 ER PT J AU Mizel, A Cohen, ML AF Mizel, A Cohen, ML TI Green's-function approach to quantum confinement SO PHYSICAL REVIEW B LA English DT Article AB We present a rigorous means of computing the electronic properties of a confined system by perturbing the electronic properties of an unconfined, bulk system. Our approach focuses on the Green's function of the confined system. We explain why it is preferable to consider the confined Green's function rather than the confined energy eigenfunctions, and an expression for the change in the Green's function produced by quantum confinement is derived. Finally, we shift our focus to the eigenfunctions and derive approximate results for a spherical nanocrystal with a Green's function methodology. [S0163-1829(98)01515-X]. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Mizel, A (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 11 TC 11 Z9 11 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP 9515 EP 9520 DI 10.1103/PhysRevB.57.9515 PG 6 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000033 ER PT J AU Zhang, SB Wei, SH Zunger, A Katayama-Yoshida, H AF Zhang, SB Wei, SH Zunger, A Katayama-Yoshida, H TI Defect physics of the CuInSe2 chalcopyrite semiconductor SO PHYSICAL REVIEW B LA English DT Review ID N-TYPE CUINSE2; FUNDAMENTAL ABSORPTION-EDGE; COPPER INDIUM DISELENIDE; II-VI SEMICONDUCTORS; ELECTRICAL-PROPERTIES; SINGLE-CRYSTALS; OPTICAL-PROPERTIES; ELECTRONIC-STRUCTURE; INTRINSIC DEFECTS; TRANSPORT-PROPERTIES AB We studied the defect physics in CuInSe2, a prototype chalcopyrite semiconductor. We showed that (i) it takes much less energy to form a Cu vacancy in CuInSe2 than to form cation vacancies in II-VI: compounds (ii) defect formation energies vary considerably both with the Fermi energy and with the chemical potential of the atomic species, and (iii) the defect pairs such as (2V(Cu)(-)+In-Cu(2+)) and (2Cu(In)(2-)+In-Cu(2+)) have particularly low formation energies (under certain conditions, even exothermic). Using (i)-(iii), we (a) explain the existence of unusual ordered compounds CuIn5Se8, CuIn3Se5, Cu2In4Se7, and Cu3In5Se9 as a repeat of a single unit of (2V(Cu)(-)+In-Cu(2+)) pairs for each n=4, 5, 7, and 9 units, respectively, of CuInSe2; (b) attribute the very efficient p-type self-doping ability of CuInSe2 to the exceptionally low formation energy of the shallow defect Cu vacancies; (c) explained in terms of an electronic passivation of the In-Cu(2+) by 2V(Cu)(-) the electrically benign character of the large defect population in CuInSe2. Our calculation leads to a set of new assignment of the observed defect transition energy levels in the band gap. The calculated level positions agree rather well with available experimental data. [S0163-1829(98)01516-1]. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 567, Japan. RP Zhang, SB (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013; Allouche, Alain/L-3562-2013 OI Zhang, Shengbai/0000-0003-0833-5860; NR 99 TC 828 Z9 843 U1 22 U2 184 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 APR 15 PY 1998 VL 57 IS 16 BP 9642 EP 9656 DI 10.1103/PhysRevB.57.9642 PG 15 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000043 ER PT J AU Kogan, S AF Kogan, S TI Electron glass: Intervalley transitions and the hopping conduction noise SO PHYSICAL REVIEW B LA English DT Article ID LOW-TEMPERATURE PROPERTIES; COULOMB GAP; DISORDERED-SYSTEMS; SPIN-GLASS; RELAXATION; ENERGY; SIMULATION; PARTICLES AB The properties of the electron glass ground state and of those low-energy metastable states (valleys), in which the Coulomb potential at any occupied impurity is lower than that at any empty one, are studied by computer simulation. The transitions between just these states are expected to determine the low-frequency stochastic dynamics of the electron glass at low temperatures. The variation of the number of valleys, N-v, in samples with the same number of impurities, N-D, but different arrangements, the shift of the N-v distribution to greater numbers with growing N-,N- the energy range of the valleys, the differences between the electron arrangements in different valleys in the same sample, and the activation energies for intervalley transitions are found. The energy range of the valleys is, at any N-D, on the order of the characteristic Coulomb energy at the mean distance between impurities. Since the number of valleys grows with N-D the mean distance between adjacent valley energies drops with N-D. Despite the small differences between the valley energies the valleys are separated by energy barriers that, in samples with high number of N-D and N-v, are distributed within a wide range. The width of this range grows with the size of the sample (N-D) and with the number of valleys in it. This is an argument in favor of the idea that just the intervalley transitions are the source of low-frequency hopping conduction noise with the 1/f spectrum in lightly doped semiconductors at low temperatures. [S0163-1829(98)05616-1]. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Kogan, S (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 23 TC 44 Z9 44 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP 9736 EP 9744 DI 10.1103/PhysRevB.57.9736 PG 9 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000054 ER PT J AU Tang, JZ Wirtz, L Burgdorfer, J Marcus, C AF Tang, JZ Wirtz, L Burgdorfer, J Marcus, C TI Oscillations in the magnetoconductance autocorrelation function for ballistic microstructures SO PHYSICAL REVIEW B LA English DT Article ID CONDUCTANCE FLUCTUATIONS; SEMICLASSICAL SCATTERING; CHAOTIC SCATTERING; REGIME AB We present a comparison between experiment and theory for the magnetoconductance autocorrelation function C(Delta B) for transport through a stadium-shaped ballistic microstructure. The correlation function displays damped oscillations which can be traced to the quantum interference between bundles of short trajectories. We present two different semiclassical calculations applicable for large and small mode numbers of the quantum wire, respectively. Good agreement is found with experimental data taken at relatively low mode numbers. [S0163-1829(98)03316-5]. C1 Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. RP Tang, JZ (reprint author), Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. NR 15 TC 3 Z9 3 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP 9875 EP 9878 DI 10.1103/PhysRevB.57.9875 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000067 ER PT J AU Fu, HX Wang, LW Zunger, A AF Fu, HX Wang, LW Zunger, A TI Applicability of the k center dot p method to the electronic structure of quantum dots SO PHYSICAL REVIEW B LA English DT Article ID SHALLOW ACCEPTOR STATES; OPTICAL-PROPERTIES; SPHERICAL MODEL; MAGNETIC-FIELDS; BAND-STRUCTURE; INP; SEMICONDUCTORS; FORMALISM; ENERGY; PHOTOLUMINESCENCE AB The k.p method has become the "standard model" for describing the electronic structure of nanometer-size quantum dots. In this paper we perform parallel k.p (6x6 and 8x8) and direct-diagonalization pseudopotential studies on spherical quantum dots of an ionic material-CdSe, and a covalent material-InP. By using an equivalent input in both approaches, i.e., starting from a given atomic pseudopotential and deriving from it the Luttinger parameters in k.p calculation, we investigate the effect of the different underlying wavefunction representations used in k.p and in the more exact pseudopotential direct diagonalization. We find that (i) the 6x6 k.p envelope function has a distinct (odd or even) parity, while-atomistic wave function is parity-mixed. The 6x6 k.p approach produces an incorrect order of the highest valence states for both InP and CdSe dots: the p-like level is above the s-like level. (ii) It fails to reveal that the second conduction state in small InP dots is folded from the L point in the Brillouin zone. Instead, all states in k.p are described as Gamma-like. (iii) The k.p overestimates the confinement energies of both valence states and conduction states. A wavefunction projection analysis shows that the principal reasons for these k.p errors in dots are (a) use of restricted basis set, and (b) incorrect bulk dispersion relation. Error (a) can be reduced only by increasing the number of basis functions. Error (b) can be reduced by altering the k.p implementation so as to bend upwards the second lowest bulk band, and to couple the conduction band into the s-like dot valence state. Our direct diagonalization approach provides an accurate and practical replacement to the standard model in that it is rather general, and can be performed simply on a standard workstation. [S0163-1829(98)03112-9]. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Zunger, Alex/A-6733-2013 NR 62 TC 91 Z9 91 U1 1 U2 18 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 APR 15 PY 1998 VL 57 IS 16 BP 9971 EP 9987 DI 10.1103/PhysRevB.57.9971 PG 17 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000080 ER PT J AU Li, DQ Keavney, DJ Pearson, J Bader, SD Pege, J Keune, W AF Li, DQ Keavney, DJ Pearson, J Bader, SD Pege, J Keune, W TI Structural and magnetic phases of ultrathin Fe wedges and films grown on diamond (100) SO PHYSICAL REVIEW B LA English DT Article ID CENTERED-CUBIC IRON; FCC FE; THIN-FILMS; MOSSBAUER; CU(100); ANTIFERROMAGNETISM; TEMPERATURE; TRANSITION; FE/CU(100); BCC AB Fe wedges (0-20 Angstrom) and films have been grown epitaxially onto diamond C(100) substrates, and their metastable structural and magnetic phases were studied by means of reflection high-energy electron diffraction (RHEED), the surface magneto-optic Kerr effect (SMOKE), and in situ Mossbauer spectroscopy. Both the substrate and films less than or equal to 5 ML thick, that were grown at room temperature and subsequently annealed, show 1 X1 streaks in the RHEED patterns, indicating a flat, well-ordered fee structure. Films >5 ML thick exhibit a three-dimensional bcc RHEED pattern. No magnetic signal was observed in either longitudinal or polar SMOKE measurements that were taken between 120 and 300 K for Fe thickness <5 ML. For >5.5-ML Fe, the films are ferromagnetic with in-plane easy axis, and the saturation magnetization (at 130 K) increases linearly with Fe thickness. In situ Mossbauer spectra for a 4-ML-thick Fe-57 film exhibit a spectral line typical of paramagnetic fee Fe at 300 and 70 K. This line broadens considerably at 40 and 35 K due to magnetic hyperfine interaction, indicating a low-moment antiferromagnet. These results indicate that 5 ML is the fcc-bcc phase boundary that separates low-moment antiferromagnetic from ferromagnetic ground states, respectively. [S0163-1829(98)05216-3]. C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Gerhard Mercator Univ, Lab Angew Phys, D-47048 Duisburg, Germany. RP Li, DQ (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Bader, Samuel/A-2995-2013 NR 32 TC 7 Z9 7 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP 10044 EP 10048 DI 10.1103/PhysRevB.57.10044 PG 5 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000087 ER PT J AU Cheong, HM Mascarenhas, A Geisz, JF Olson, JM Keller, MW Wendt, JR AF Cheong, HM Mascarenhas, A Geisz, JF Olson, JM Keller, MW Wendt, JR TI Statistical distribution of the order parameter in spontaneously ordered Ga0.52In0.48P alloys SO PHYSICAL REVIEW B LA English DT Article ID QUANTUM DOTS; PHOTOLUMINESCENCE; GAINP2; SPECTROSCOPY; SPECTRA AB The spontaneously ordered Ga0.52In0.48P alloy comprises domains, each of which is characterized by an order parameter eta. We have used the low-temperature near-field photoluminescence technique with a high spatial resolution (less than or equal to 2500 Angstrom) to study the statistical distribution of the order parameter eta of single-variant ordered alloys. We have found that for large-domain samples, eta varies only slightly between domains and the line width broadening of the excitonic photoluminescence peak comes mainly from alloy scattering within a single domain rather than from a broad distribution of eta. [S0163-1829(98)52416-2]. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. Natl Inst Stand & Technol, Boulder, CO 80303 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Cheong, HM (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RI Cheong, Hyeonsik/D-7424-2012 OI Cheong, Hyeonsik/0000-0002-2347-4044 NR 17 TC 17 Z9 17 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 APR 15 PY 1998 VL 57 IS 16 BP R9400 EP R9403 DI 10.1103/PhysRevB.57.R9400 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000008 ER PT J AU Fan, XD Wang, HL Hou, HQ Hammons, BE AF Fan, XD Wang, HL Hou, HQ Hammons, BE TI Biexcitonic effects in the nonperturbative regime of semiconductor microcavities SO PHYSICAL REVIEW B LA English DT Article ID GAAS QUANTUM-WELLS; OPTICAL-RESPONSE; OSCILLATIONS; POLARITONS AB Polarization-dependent transient pump-probe spectroscopy reveals important effects of biexcitonic interactions on coupled optical excitations in semiconductor microcavities. We show that exciton-to-biexciton transitions can result in a significant increase in normal mode splitting of cavity-polaritons, in sharp contrast to effects of nonlinear optical interactions such as band filling that reduce the splitting. A phenomenological model based on Maxwell-Bloch equations is developed to elucidate how biexcitonic effects contribute to cavity-polaritons. [S0163-1829(98)50120-8]. C1 Univ Oregon, Dept Phys, Eugene, OR 97403 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Fan, XD (reprint author), Univ Oregon, Dept Phys, Eugene, OR 97403 USA. RI Wang, Hailin/A-2362-2011 NR 18 TC 23 Z9 22 U1 1 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP R9451 EP R9454 DI 10.1103/PhysRevB.57.R9451 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000021 ER PT J AU Kim, JN Wang, LW Zunger, A AF Kim, JN Wang, LW Zunger, A TI Comparison of the electronic structure of InAs/GaAs pyramidal quantum dots with different facet orientations SO PHYSICAL REVIEW B LA English DT Article ID RELAXATION; GAAS; ENERGY AB Using a pseudopotential plane-wave approach, we have calculated the electronic structure of strained InAs pyramidal quantum dots embedded in a GaAs matrix, for a few height (h)-to-base(b) ratios, corresponding to different facet orientations {101}, {113}, and {105}. We find that the dot shape (not just size) has a significant effect on its electronic structure. In particular, while the binding energies of the ground electron and hole states increase with the pyramid volumes (b(2)h), the splitting of the p-like conduction states increases with facet orientation (h/b), and the p-to-s splitting of the conduction states decreases as the base size (b) increases. We also find that there are up to six bound electron states (12 counting the spin), and that all degeneracies other than spin, are removed. This is in accord with the conclusion of electron-addition capacitance data, but in contrast with simple k.p calculations, which predict only a single electron level. [S0163-1829(98)50516-4]. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Kim, JN (reprint author), Ohio State Univ, Dept Phys, 174 W 18Th Ave, Columbus, OH 43210 USA. RI Schaff, William/B-5839-2009; Zunger, Alex/A-6733-2013 NR 29 TC 111 Z9 112 U1 1 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP R9408 EP R9411 DI 10.1103/PhysRevB.57.R9408 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000010 ER PT J AU Ozolins, V Zunger, A AF Ozolins, V Zunger, A TI First-principles theory of the evolution of vibrational properties with long-range order in GaInP2 SO PHYSICAL REVIEW B LA English DT Article ID RAMAN-SCATTERING; SUPERLATTICE; GAXIN1-XP; PHOSPHIDE; MODES AB We predict the phonon spectra of zinc-blende GaP and InP, of CuPt-type ordered GaInP2, and of the random Ga0.5In0.5P alloy using first-principles density-functional linear-reponse theory. We find that (i) ordered GaInP2 exhibits two GaP-like and two InP-like phonon modes (a "two-mode" behavior), (ii) ordering reverses the order of frequencies of the TO-phonon modes of zinc-blende GaP and InP due to a frustrated bend geometry in the ordered phase, and (iii) each of the LO-phonon modes of the ternary GaInP2 phase represents a mixture of Gamma and L phonons of the corresponding binary compound (LO1 is GaP-like, LO2 is InP-like), yet the TO (LO) modes of the random alloy represent an amalgamation of the TO (LO) modes of GaP+InP. Consequently, the ordered phase is predicted to exhibit a two-mode behavior, while the random alloy is a pseudo-one-mode system. [S0163-1829(98)50112-9]. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Ozolins, V (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Ozolins, Vidvuds/D-4578-2009; Zunger, Alex/A-6733-2013 NR 20 TC 33 Z9 33 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP R9404 EP R9407 DI 10.1103/PhysRevB.57.R9404 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000009 ER PT J AU Rohlfing, M Louie, SG AF Rohlfing, M Louie, SG TI Quasiparticle band structure of HgSe SO PHYSICAL REVIEW B LA English DT Article ID SEMICONDUCTORS; INSULATORS; PSEUDOPOTENTIALS; ENERGIES; METALS; GAPS; CDS AB Motivated by a recent discussion about the existence of a fundamental gap in HgSe [Phys. Rev. Lett. 78, 3165 (1997)], we calculate the quasiparticle band structure of HgSe within the GW approximation for the electron self-energy. The band-structure results show that HgSe is a semimetal, which is in agreement with most experimental data. We observe a strong wave-vector dependence of the self-energy of the lowest conduction band, leading to an increased dispersion and a small effective mass. This may help to interpret recent photoemission spectroscopy measurements. [S0163-1829(98)50816-8]. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Rohlfing, M (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 26 TC 17 Z9 17 U1 1 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD APR 15 PY 1998 VL 57 IS 16 BP R9392 EP R9395 DI 10.1103/PhysRevB.57.R9392 PG 4 WC Physics, Condensed Matter SC Physics GA ZJ381 UT WOS:000073209000006 ER PT J AU Chung, DJH Farrar, GR Kolb, EW AF Chung, DJH Farrar, GR Kolb, EW TI Are ultrahigh energy cosmic rays a signal for supersymmetry? SO PHYSICAL REVIEW D LA English DT Article ID LIGHT-GLUINO; SPECTRUM; RADIATION; CUTOFF; SEARCH; WELL; EYE AB We investigate the possibility that cosmic rays of energy larger than the Greisen-Zatsepin-Kuzmin cutoff are not nucleons, but a new stable, massive, hadron that appears in many extensions of the standard model. We focus primarily on the S-0, a uds-gluino bound state. The range of the S-0 through the cosmic background radiation is significantly longer than the range of nucleons, and therefore S-0's can originate from sources at cosmological distances. C1 Univ Chicago, Dept Phys, Chicago, IL 60637 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Fermi Natl Accelerator Lab, NASA, Fermilab Astrophys Ctr, Batavia, IL 60510 USA. Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08855 USA. Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. RP Chung, DJH (reprint author), Univ Chicago, Dept Phys, Chicago, IL 60637 USA. NR 26 TC 88 Z9 89 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 APR 15 PY 1998 VL 57 IS 8 BP 4606 EP 4613 DI 10.1103/PhysRevD.57.4606 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA ZJ378 UT WOS:000073208600009 ER PT J AU Frieman, JA Waga, I AF Frieman, JA Waga, I TI Constraints from high redshift supernovae upon scalar field cosmologies SO PHYSICAL REVIEW D LA English DT Article ID DECAYING LAMBDA-COSMOLOGIES; POWER-LAW INFLATION; LIGHT-CURVE SHAPES; COLD DARK-MATTER; IA SUPERNOVAE; EXPONENTIAL POTENTIALS; CONSTANT; UNIVERSE; SPECTRUM; MODELS AB Recent observations of high-redshift type Ia supernovae have placed stringent constraints on the cosmological constant Lambda. We explore the implications of these SNe observations for cosmological models in which a classically evolving scalar field currently dominates the energy density of the Universe. Such models have been shown to share the advantages of Lambda models: compatibility with the spatial flatness predicted by inflation; a Universe older than the standard Einstein-de Sitter model; and, combined with cold dark matter, predictions for large-scale structure formation in good agreement with data from galaxy surveys. Compared to the cosmological constant, these scalar field models are consistent with the SNe observations for a lower matter density, Omega(m0)similar to 0.2, and a higher age, H(0)t(0) greater than or similar to 1. Combined with the fact that scalar field models imprint a distinctive signature on the cosmic microwave background anisotropy, they remain currently viable and should be testable in the near future. C1 Fermi Natl Accelerator Lab, NASA, Fermilab Astrophys Ctr, Batavia, IL 60510 USA. Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil. RP Frieman, JA (reprint author), Fermi Natl Accelerator Lab, NASA, Fermilab Astrophys Ctr, POB 500, Batavia, IL 60510 USA. RI Waga, Ioav/B-6288-2014 NR 44 TC 71 Z9 71 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 APR 15 PY 1998 VL 57 IS 8 BP 4642 EP 4650 DI 10.1103/PhysRevD.57.4642 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA ZJ378 UT WOS:000073208600013 ER PT J AU Ahluwalia, DV Burgard, C AF Ahluwalia, DV Burgard, C TI Interplay of gravitation and linear superposition of different mass eigenstates SO PHYSICAL REVIEW D LA English DT Article ID EQUIVALENCE PRINCIPLE; NEUTRINOS; OSCILLATIONS; VIOLATION AB The interplay of gravitation and the quantum-mechanical principle of linear superposition induces a new set of neutrino oscillation phases. These ensure that the flavor-oscillation clocks, inherent in the phenomenon of neutrino oscillations, redshift precisely as required by Einstein's theory of gravitation. The physical observability of these phases in the context of the solar neutrino anomaly, type-II supernova, and certain atomic systems is briefly discussed. C1 Univ Calif Los Alamos Natl Lab, Phys Div P25, Los Alamos, NM 87545 USA. ANSER, Global Power Div, Arlington, VA 22202 USA. CERN, PPE, CH-1211 Geneva, Switzerland. RP Ahluwalia, DV (reprint author), Univ Calif Los Alamos Natl Lab, Phys Div P25, Mail Stop H-846, Los Alamos, NM 87545 USA. NR 27 TC 56 Z9 56 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 APR 15 PY 1998 VL 57 IS 8 BP 4724 EP 4727 DI 10.1103/PhysRevD.57.4724 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA ZJ378 UT WOS:000073208600022 ER PT J AU Rutledge, JT Phillips, WS Schuessler, BK AF Rutledge, JT Phillips, WS Schuessler, BK TI Reservoir characterization using oil-production-induced microseismicity, Clinton County, Kentucky SO TECTONOPHYSICS LA English DT Article; Proceedings Paper CT IASPEI Symposium on New Trends in Seismological Research - Studies of Seismicity Induced by Mining, Petroleum and Geothermal Activities at the IUGG Meeting CY JUL, 1995 CL BOULDER, CO SP IASPEI, Gen Assembly Int Union Geodesy & Geophys DE induced seismicity; fractures; fracture imaging; reservoir characterization; oil production; stress measurements ID REGIONAL STRESS TENSOR; EASTERN NORTH-AMERICA; FOCAL MECHANISM DATA; INDUCED SEISMICITY; FLUID EXTRACTION; GAS-FIELD; WRENCH FAULTS; WEST TEXAS; EARTHQUAKE; SCALE AB Microseismic monitoring tests were conducted from 1993 to 1995 in the Seventy-Six oil field, Clinton County, Kentucky. Oil is produced from low-porosity, fractured carbonate rocks at <600 m depth. Downhole geophones were deployed in wells located within 120 to 250 m of new production wells. Three tests were conducted sequentially for 9.5-, 20.5-, and 30-week periods during which 110, 180 and 3237 microearthquakes were detected, respectively. Moment-derived magnitudes ranged from -2.5 to 0.9. Volumes extracted ranged from about 1300 to 1800 m(3); no injection operations were conducted. Gross changes in production rate correlate with event rate: event rate lags changes in production rate by 2 to 3 weeks. Hypocenters and first-motion data have revealed previously undetected, low-angle thrust faults above and below the currently drained depth intervals. Production history, well logs and drill tests indicate that the seismically active faults or fractures are previously drained intervals that have subsequently recovered to hydrostatic pressure via brine invasion. Storage capacity computed for one of these drained fractures implies that total oil production represents about 20% of total pore volume. Correlation of older production intervals and well-ion porosity anomalies with the seismically active faults indicate that the oil reservoir in the study area is primarily a set df compartmentalized, low-angle thrust faults. Although low-angle fracture sets have not previously been considered in the exploration and development of the area, the mapped thrust faults are consistent with other investigators' interpretations of oil associated with secondary fracture sets occurring along deeper-seated, wrench-fault structures. Stress determined from composite focal mechanisms indicates a near-surface (<550 m) thrust regime. Maximum horizontal stress direction is N15 degrees W +/- 15 degrees, rotated approximately 90 degrees from regional orientation. The seismic behavior is consistent with poroelastic models that predict slight increases in horizontal compressive stress above and below currently drained volumes. Pressure re-equilibration via brine invasion replacing previously produced oil along the seismically active faults should also be weakly promoting the observed seismic failure. Total estimated production-induced stress change promoting slip is approximately 0.02 MPa, (C) 1998 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Nambe Geophys Inc, GeoEngn Grp, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Nambe Geophys Inc, GeoEngn Grp, EES-4,Mail Stop D443, Los Alamos, NM 87545 USA. EM jrutledge@lanl.gov NR 55 TC 40 Z9 40 U1 0 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-1951 EI 1879-3266 J9 TECTONOPHYSICS JI Tectonophysics PD APR 15 PY 1998 VL 289 IS 1-3 BP 129 EP 152 DI 10.1016/S0040-1951(97)00312-0 PG 24 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZR956 UT WOS:000074033200011 ER PT J AU Phillips, WS Fairbanks, TD Rutledge, JT Anderson, DW AF Phillips, WS Fairbanks, TD Rutledge, JT Anderson, DW TI Induced microearthquake patterns and oil-producing fracture systems in the Austin chalk SO TECTONOPHYSICS LA English DT Article; Proceedings Paper CT IASPEI Symposium on New Trends in Seismological Research - Studies of Seismicity Induced by Mining, Petroleum and Geothermal Activities at the IUGG Meeting CY JUL, 1995 CL BOULDER, COLORADO SP IASPEI, Gen Assembly Int Union Geodesy & Geophys DE seismic methods; hydrocarbons; hydraulic fracturing; microearthquakes; acoustic emissions ID ROCK AB Microearthquakes collected during hydraulic stimulation allowed us to study fracture zones in Austin chalk oil reservoirs at two sites in the Giddings field, Texas. We deployed three-component, downhole geophone tools in production wells at depths of 2100 In and greater, one near Cook's Point, and two on the Matcek lease near Caldwell. At Cook's Point, we collected 482 microseismic events during a 4000 m(3) (25,000 bbl) hydraulic stimulation in an offset well. We collected 770 events during a similar operation on the Matcek lease. Many seismogams contained reflected phases that constrained location depths to the production zone at the base of the Austin chalk. By restricting all microearthquake locations to production depths, we located 20% of the Cook's Point events and over 60% of the Matcek events. At both sites we observed only the fracture wing closest to the observation stations. Locations formed elongated patterns extending up to 1 km from the stimulation well and trending N60 degrees E, parallel to the known, regional fracture trend. The Cook's Point seismic zone measured over 100 m in width, while long stretches of the Matcek seismic zone narrowed to 30 m or less. We believe that the width of the seismic zone reflected the density of conductive fractures and thus, the volume of the reservoir accessed by the stimulation. Indeed, production rates in the first year following stimulation were much higher at Cook's Point, where we observed the wider of the two seismic zones. (C) 1998 Elsevier Science B.V. All rights reserved. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Nambe Geophys Inc, Santa Fe, NM 87501 USA. RP Rutledge, JT (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 23 TC 34 Z9 34 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-1951 J9 TECTONOPHYSICS JI Tectonophysics PD APR 15 PY 1998 VL 289 IS 1-3 BP 153 EP 169 DI 10.1016/S0040-1951(97)00313-2 PG 17 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZR956 UT WOS:000074033200012 ER PT J AU Fehler, M House, L Phillips, WS Potter, R AF Fehler, M House, L Phillips, WS Potter, R TI A method to allow temporal variation of velocity in travel-time tomography using microearthquakes induced during hydraulic fracturing SO TECTONOPHYSICS LA English DT Article; Proceedings Paper CT IASPEI Symposium on New Trends in Seismological Research - Studies of Seismicity Induced by Mining, Petroleum and Geothermal Activities at the IUGG Meeting CY JUL, 1995 CL BOULDER, CO SP IASPEI, Gen Assembly Int Union Geodesy & Geophys DE seismic methods; seismic studies; tomography; geothermal energy; induced earthquakes ID FENTON-HILL; NEW-MEXICO; ROCK; SITE AB Hydraulic injections produce fluid-filled fractures that reduce the seismic velocity of the rock compared to intact rock. The travel times of microearthquakes induced by the injections may be used to discern changes in the rock velocities, as well as locating the microearthquakes. Determining the volumes of rock where the velocities have changed provides indirect evidence for the location of the injected fluid, and the character of the changes produced in the fractured rock. Available data are generally insufficient to resolve both the spatial and temporal changes within the rock. To extract information about temporal changes, and to obtain an improved image of the velocity structure, we chose a parameterization scheme in which the velocities of each block are allowed to change from the background velocity only after a threshold number of microearthquakes have occurred in the block. Regularizing by constraining the velocity of all the altered blocks to be similar helps stabilize the inversion. The regularization can be relaxed somewhat to allow the velocity of an altered block to be different from other altered blocks if the travel-time data are compelling. The parameterization scheme is justified since observations show that the volume of the seismically stimulated rock increases linearly with the volume of the injected fluid. We applied the method to data collected in a region of Precambrian crystalline rock that was injected with 21,600 m(3) of water. We use travel times from a total of 3886 microearthquakes that were induced by the injection. The mean RMS travel-time residual decreases about 7%. The velocity structure contains a low-velocity zone located near the injection region. Other distinct low-velocity zones are identified. The pattern of microearthquake locations found using our method appears to contain more structure than the pattern found in locations determined using a homogeneous velocity structure. Two clear low-velocity regions found near the point where water was injected into the rock are separated by a region whose velocity did not change. The region of unaltered velocity had a large number of microearthquakes. (C) 1998 Elsevier Science B.V. All rights reserved. C1 Los Alamos Natl Lab, Geol Engn Grp, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Geol Engn Grp, POB 1663, Los Alamos, NM 87545 USA. EM fehler@lanl.gov NR 18 TC 24 Z9 24 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0040-1951 EI 1879-3266 J9 TECTONOPHYSICS JI Tectonophysics PD APR 15 PY 1998 VL 289 IS 1-3 BP 189 EP 201 DI 10.1016/S0040-1951(97)00315-6 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZR956 UT WOS:000074033200014 ER PT J AU Ma, JG Laberge, M Song, XZ Jentzen, W Jia, SL Zhang, J Vanderkooi, JM Shelnutt, JA AF Ma, JG Laberge, M Song, XZ Jentzen, W Jia, SL Zhang, J Vanderkooi, JM Shelnutt, JA TI Protein-induced changes in nonplanarity of the porphyrin in nickel cytochrome c probed by resonance Raman spectroscopy SO BIOCHEMISTRY LA English DT Article ID HEART FERRICYTOCHROME-C; STRENGTH ACIDIC FORMS; PI-PI-INTERACTIONS; FORCE-FIELD; MOLECULAR-STRUCTURE; HEME CONFIGURATION; ISOTOPE SHIFTS; OCTAETHYLPORPHYRIN; SPECTRA; HORSE AB The influence of the protein on the nonplanarity of the macro cycle for nickel(II)-reconstituted cytochrome c (NiCyt-c) has been investigated with pH-dependent resonance Raman and UV-visible absorption spectroscopy and molecular mechanics calculations. The spectra reveal that NiCyt-c near neutral pH has axially coordinated Ni, but below pH 3 and above pH 12, four-coordinate species predominate. The shape of the structure-sensitive Raman line upsilon(10) of NiCyt-c is asymmetric and broad and it changes with pH. This broad line can be decomposed well into at least two sublines, a low-frequency line that results from a nonplanar conformer and a high-frequency line that arises from a nearly planar conformer. relative to that of the planar conformer. Upon lowering the pH from 3.0 to 1.0, the amount of the nonplanar conformer decreases relative to that of the planar conformer. The decreased nonplanarity can be accounted for in terms of the disruption of a hydrogen-bonding network in the peptide backbone upon lowering the pH. Molecular mechanics (MM) calculations on iron(III) and nickel(II) microperoxidase 5 (MP-5) as well as some model heme derivatives have been carried out in order to locate the part of the protein that causes the heme distortion observed in the X-ray crystal structures of cytochromes c. The energy-optimized structures of MP-5 and the model compounds were analyzed using the normal-coordinate structural decomposition method to specify and quantify the out-of-plane macrocyclic distortions. MM calculations for MP-5 show that two hydrogen bonds formed between the amide groups in the peptide backbone are important in maintaining the ruffled deformation of the macrocycle. All evidence presented supports the hypothesis that the nonplanar distortion of the porphyrin of cytochromes c is largely maintained by a relatively small protein segment including the cysteines, the amino acids between the cysteines, and the adjacent histidine ligand. Hydrogen bonding within the backbone of this segment is important in maintaining the conformation of the peptide that induces the porphyrin distortion. C1 Sandia Natl Labs, Mat Theory & Computat Dept, Albuquerque, NM 87185 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ Penn, Dept Biochem & Biophys, Philadelphia, PA 19104 USA. RP Shelnutt, JA (reprint author), Sandia Natl Labs, Mat Theory & Computat Dept, POB 5800, Albuquerque, NM 87185 USA. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 56 TC 61 Z9 61 U1 1 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD APR 14 PY 1998 VL 37 IS 15 BP 5118 EP 5128 DI 10.1021/bi972375b PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA ZK043 UT WOS:000073279200009 PM 9548742 ER PT J AU Lee, WH AF Lee, WH TI Two-dimensional Lagrangian method for elastic-plastic flow SO COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING LA English DT Article AB The present study uses Schulz's two-dimensional radiation hydrodynamic code as a framework. Three new features are added to the basic code. First, finite difference equations for deviatoric stresses and strains, shear modulus and yield strengths are written, i.e. compatibly with Schulz's special formulations. Material properties (i.e. shear modulus and yield strength) are dependent on pressure, compression and equivalent plastic strain (i.e. Steinberg-Guinan model). Second, modifications to the artificial viscosity are made so that the acceleration from the artificial viscosity will project onto the unit vector in the direction of local acceleration. This projection eliminates 'false heating' and helps maintain a stable computational grid. Also a very sharp shock front location will be obtained through this new method. Third, a semi-Eulerian method that allows the material flow through the Lagrangian mesh is used for treating the Lagrangian sliding interfaces. (C) 1998 Elsevier Science S.A. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Lee, WH (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0045-7825 J9 COMPUT METHOD APPL M JI Comput. Meth. Appl. Mech. Eng. PD APR 14 PY 1998 VL 156 IS 1-4 BP 149 EP 169 DI 10.1016/S0045-7825(97)00203-X PG 21 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications; Mechanics SC Engineering; Mathematics; Mechanics GA ZL966 UT WOS:000073491400007 ER PT J AU Zygmunt, SA Mueller, RM Curtiss, LA Iton, LE AF Zygmunt, SA Mueller, RM Curtiss, LA Iton, LE TI An assessment of density functional methods for studying molecular adsorption in cluster models of zeolites SO JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM LA English DT Article DE density functional theory; cluster models; zeolites ID BRONSTED ACID SITES; NEUTRON INELASTIC-SCATTERING; AB-INITIO; HYDROXYL-GROUPS; INFRARED-SPECTROSCOPY; CORRELATION-ENERGY; WATER-MOLECULES; ELECTRON-GAS; METHANOL; COMPLEXES AB The performance of six density functional theory (DFT) methods has been tested for a zeolite cluster containing three tetrahedral atoms (3T) and the complexes it forms with water and methanol molecules. The DFT methods (BLYP, BP86, BPW91, B3LYP, B3P86, B3PW91) give results in good agreement with second-order perturbation theory (MP2). The results in this paper provide evidence of the suitability of DFT methods for studying hydrogen-bonded adsorption complexes in zeolites. Generally, the hybrid DFT methods are in closer agreement with experiment and MP2 than the pure DFT methods for geometrical parameters. The only exception is the Z(-) geometry, perhaps due to its anionic character. All DFT methods give results in good overall agreement with MP2 for intramolecular geometrical parameters of the adsorption complexes, intramolecular vibrational frequencies, and adsorption energies. The B3LYP method gives intermolecular geometries and intermolecular vibrational frequencies which are closest to those obtained from the MP2 method. Thus, the B3LYP method seems to be the best choice for a density functional treatment of molecular adsorption in zeolite systems. (C) 1998 Elsevier Science B.V. C1 Valparaiso Univ, Dept Phys & Astron, Valparaiso, IN 46383 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Zygmunt, SA (reprint author), Valparaiso Univ, Dept Phys & Astron, Valparaiso, IN 46383 USA. NR 51 TC 37 Z9 38 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-1280 J9 J MOL STRUC-THEOCHEM JI Theochem-J. Mol. Struct. PD APR 14 PY 1998 VL 430 BP 9 EP 16 PG 8 WC Chemistry, Physical SC Chemistry GA ZE981 UT WOS:000072850900002 ER PT J AU Cheng, Q Stevens, RC AF Cheng, Q Stevens, RC TI Charge-induced chromatic transition of amino acid-derivatized polydiacetylene liposomes SO LANGMUIR LA English DT Article ID AQUEOUS SUBPHASE; FILMS; POLYMERIZATION AB Polydiacetylene liposomes have useful potential in biosensor research. To investigate the role of the headgroup in the colorimetric transition, a series of amino acid-derivatized 10,12-pentacosadyanoic acid lipids have been synthesized. The UV-polymerized liposomes undergo an irreversible color change from blue to red in response to a change of specific solution pH. In this system, the color change appears to be due to charge-induced headgroup rearrangement which perturbs the conjugated backbone assembly. Considering the reduced degree of freedom for lipid molecules in polymeric liposomes, a rigid, staggered conformational change in polydiacetylene conjugation is suggested as a likely mechanism for the colorimetric transition. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA. RP Stevens, RC (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Cheng, Jason/C-6345-2011; Stevens, Raymond/K-7272-2015 OI Stevens, Raymond/0000-0002-4522-8725 NR 17 TC 160 Z9 161 U1 0 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD APR 14 PY 1998 VL 14 IS 8 BP 1974 EP 1976 DI 10.1021/la980185b PG 3 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA ZK056 UT WOS:000073280500008 ER PT J AU Xu, L Salmeron, M AF Xu, L Salmeron, M TI Effects of surface ions on the friction and adhesion properties of mica SO LANGMUIR LA English DT Article ID ATOMIC-FORCE MICROSCOPE; WATER AB Friction Force Microscopy studies on ion-exchanged mica surfaces at different humidity levels were performed. Ion exchange was achieved by treating the potassium mica (muscovite) in different solutions to replace K+ surface ions by Ca2+, Mg2+, and H+. It is found that these different surface ions can significantly modify the tribological properties of mica. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Chinese Acad Sci, Shanghai Inst Nucl Res, Shanghai 201800, Peoples R China. RP Salmeron, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 8 TC 29 Z9 30 U1 1 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD APR 14 PY 1998 VL 14 IS 8 BP 2187 EP 2190 DI 10.1021/la9713659 PG 4 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA ZK056 UT WOS:000073280500038 ER PT J AU Chorin, AJ Kast, AP Kupferman, R AF Chorin, AJ Kast, AP Kupferman, R TI Optimal prediction of underresolved dynamics SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article AB A method is presented for computing the average solution of problems that are too complicated for adequate resolution, but where information about the statistics of the solution is available. The method involves computing average derivatives by interpolation based on linear regression, and an updating of a measure constrained by the available crude information. Examples are given. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Math, Berkeley, CA 94720 USA. RP Chorin, AJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Math, Mail Stop 50A-2152,1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 7 TC 67 Z9 67 U1 0 U2 1 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD APR 14 PY 1998 VL 95 IS 8 BP 4094 EP 4098 DI 10.1073/pnas.95.8.4094 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA ZH535 UT WOS:000073120800007 PM 9539695 ER PT J AU Pike, LM Liu, CT AF Pike, LM Liu, CT TI Environmental and strain rate effects on the ductility and yield strength of Fe-40Al SO SCRIPTA MATERIALIA LA English DT Article ID ROOM-TEMPERATURE DUCTILITY; HYDROGEN EMBRITTLEMENT; TENSILE PROPERTIES; MAJOR CAUSE; AL-ALLOYS; FRACTURE; FEAL; BORON; NI3AL; FE3AL C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Pike, LM (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA. OI Liu, Chain Tsuan/0000-0001-7888-9725 NR 24 TC 33 Z9 33 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD APR 14 PY 1998 VL 38 IS 10 BP 1475 EP 1480 DI 10.1016/S1359-6462(98)00087-6 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA ZM587 UT WOS:000073555100001 ER PT J AU Nieh, TG Kinney, JH Wadsworth, J Ladd, AJC AF Nieh, TG Kinney, JH Wadsworth, J Ladd, AJC TI Morphology and elastic properties of aluminum foams produced by a casting technique SO SCRIPTA MATERIALIA LA English DT Article C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA. RP Nieh, TG (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-369, Livermore, CA 94551 USA. RI Nieh, Tai-Gang/G-5912-2011 OI Nieh, Tai-Gang/0000-0002-2814-3746 NR 12 TC 59 Z9 61 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD APR 14 PY 1998 VL 38 IS 10 BP 1487 EP 1494 DI 10.1016/S1359-6462(98)00090-6 PG 8 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA ZM587 UT WOS:000073555100003 ER PT J AU Liu, CT Wright, JL Stoloff, NS AF Liu, CT Wright, JL Stoloff, NS TI Effect of Zr and C additions on environmental embrittlement of Fe-28Al-5Cr aluminide SO SCRIPTA MATERIALIA LA English DT Article ID TEMPERATURE TENSILE PROPERTIES; FE3AL-BASED ALLOY; IRON ALUMINIDES; FE3AL; CHROMIUM; FEAL; DUCTILITY; FRACTURE; WATER C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Liu, CT (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA. OI Liu, Chain Tsuan/0000-0001-7888-9725 NR 20 TC 7 Z9 7 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD APR 14 PY 1998 VL 38 IS 10 BP 1601 EP 1606 DI 10.1016/S1359-6462(98)00088-8 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA ZM587 UT WOS:000073555100019 ER PT J AU Campbell, IH Davids, PS Smith, DL Barashkov, NN Ferraris, JP AF Campbell, IH Davids, PS Smith, DL Barashkov, NN Ferraris, JP TI The Schottky energy barrier dependence of charge injection in organic light-emitting diodes SO APPLIED PHYSICS LETTERS LA English DT Article ID TRANSPORT; DEVICES AB We present device model calculations of the current-voltage (I-V) characteristics of organic diodes and compare them with measurements of structures fabricated using MEH-PPV. The structures are designed so that all of the current is injected from one contact. The I-V characteristics are considered as a function of the Schottky energy barrier to charge injection from the contact. Experimentally, the Schottky barrier is varied from essentially zero to more than 1 eV by using different metal contacts. A consistent description of the device I-V characteristics is obtained as the Schottky barrier is varied from small values, less than about 0.4 eV, where the current flow is space-charge limited to larger values where it is contact limited. (C) 1998 American Institute of Physics. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Texas, Richardson, TX 75083 USA. RP Campbell, IH (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM campbell@lanl.gov RI Davids, Paul/D-1550-2010 NR 17 TC 87 Z9 88 U1 1 U2 15 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 13 PY 1998 VL 72 IS 15 BP 1863 EP 1865 DI 10.1063/1.121208 PG 3 WC Physics, Applied SC Physics GA ZG930 UT WOS:000073054300023 ER PT J AU Augustine, MP Wong-Foy, A Yarger, JL Tomaselli, M Pines, A TonThat, DM Clarke, J AF Augustine, MP Wong-Foy, A Yarger, JL Tomaselli, M Pines, A TonThat, DM Clarke, J TI Low field magnetic resonance images of polarized noble gases obtained with a dc superconducting quantum interference device SO APPLIED PHYSICS LETTERS LA English DT Article ID ROOM-TEMPERATURE SAMPLES; HYPERPOLARIZED HE-3; EDGE ENHANCEMENT; NMR; SQUID; XE-129; MRI AB Using a low transition temperature superconducting quantum interference device as a detector, we have obtained magnetic resonance images of laser-polarized He-3 gas and solid Xe-129 at 4.2 K in magnetic fields as low as 0.54 mT (He-3) and 1 mT (Xe-129), corresponding to Larmor frequencies of 17.6 and 11.8 kHz, respectively. The experimental resolution of the images is similar to 500 mu m for He-3 ill the gas phase and similar to 950 mu m for Xe-129 in the solid state. (C) 1998 American Institute of Physics. C1 Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Augustine, MP (reprint author), Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. RI Yarger, Jeff/L-8748-2014 OI Yarger, Jeff/0000-0002-7385-5400 NR 24 TC 37 Z9 38 U1 2 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 13 PY 1998 VL 72 IS 15 BP 1908 EP 1910 DI 10.1063/1.121223 PG 3 WC Physics, Applied SC Physics GA ZG930 UT WOS:000073054300038 ER PT J AU Hollik, W Mosle, WM Wackeroth, D AF Hollik, W Mosle, WM Wackeroth, D TI Top pair production at hadron colliders in non-minimal standard models SO NUCLEAR PHYSICS B LA English DT Article ID HIGGS-BOSON MASS; QUARK PRODUCTION; FERMILAB TEVATRON; SUPERSYMMETRIC MODELS; RADIATIVE-CORRECTIONS; WEAK INTERACTIONS; CROSS-SECTION; COLLISIONS; PHYSICS AB The cross section of top pair production in hadronic collisions to O(alpha alpha(s)(2)) is calculated within the General 2-Higgs Doublet Model and the Minimal Supersymmetric Standard Model. At the parton level the O(alpha) one-loop corrections to the main production mechanisms, q (q) over bar --> t (t) over bar and gg --> t (t) over bar, significantly modify the Born cross sections: in the threshold region root (S) over cap greater than or similar to 2m(t) they are enhanced up to 50% and with increasing cm energy root (S) over cap, they can be reduced by up to the same order of magnitude. In a wide range of the parameter space of the models under consideration the observable hadronic cross sections for top pair production at the Tevatron p (p) over bar --> t(t) over barX$ and at the LHC pp --> t(t) over barX$ are typically reduced by several percent (less than or similar to 10%) compared to the lowest order result. In special regions of the parameter space, that is in the vicinity of the threshold for the top quark decay t --> b H+; <(t chi)over tilde>(0), the radiative corrections are considerably enhanced, comparable in size to QCD effects. (C) 1998 Elsevier Science B.V. C1 Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany. Fermi Natl Accelerator Lab, Theory Grp, Batavia, IL 60510 USA. RP Hollik, W (reprint author), Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany. EM wackerot@psw218.psi.ch; wackeroth@psw218.psi.ch NR 52 TC 23 Z9 23 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD APR 13 PY 1998 VL 516 IS 1-2 BP 29 EP 54 DI 10.1016/S0550-3213(98)00081-9 PG 26 WC Physics, Particles & Fields SC Physics GA ZJ294 UT WOS:000073199600003 ER PT J AU Ambrosanio, S Kribs, GD Martin, SP AF Ambrosanio, S Kribs, GD Martin, SP TI Three-body decays of selectrons and smuons in low-energy supersymmetry breaking models SO NUCLEAR PHYSICS B LA English DT Article ID LIGHT GRAVITINO; FERMILAB TEVATRON; E+E ANNIHILATION; SEARCH; TECHNICOLOR; PHOTINOS; COLLIDER; SCALE AB In models with low-energy supersymmetry breaking, it is well known that charged sleptons can be significantly lighter than the lightest neutralino, with the gravitino and lighter stau being the lightest and next-to-lightest supersymmetric particles respectively. We give analytical formulas for the three-body decays of right-handed selectrons and smuons into final states involving a tau, stau, and an electron or muon, which are relevant in this scenario. We find that the three-body decays dominate over much of the parameter space, but the two-body decays into a lepton and a gravitino can compete if the three-body phase space is small and the supersymmetry breaking scale (governing the two-body channel) is fairly low. We study this situation quantitatively for typical gauge-mediated supersymmetry breaking model parameters. The three-body decay lengths are possibly macroscopic, leading to new unusual signals. We also analyze the final-state energy distributions, and briefly assess the prospects for detecting these decays at CERN LEP2 and other colliders. (C) 1998 Elsevier Science B.V. C1 Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Ambrosanio, S (reprint author), DESY, D-22603 Hamburg, Germany. NR 61 TC 48 Z9 48 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD APR 13 PY 1998 VL 516 IS 1-2 BP 55 EP 69 DI 10.1016/S0550-3213(98)00041-8 PG 15 WC Physics, Particles & Fields SC Physics GA ZJ294 UT WOS:000073199600004 ER PT J AU Czarnecki, A Melnikov, K Uraltsev, N AF Czarnecki, A Melnikov, K Uraltsev, N TI Non-Abelian dipole radiation and the heavy quark expansion SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUANTUM CHROMODYNAMICS; PERTURBATIVE QCD; SUM-RULES; TRANSITIONS; MESONS; DECAYS; LIMIT AB Dipole radiation in QCD is derived to the second order in alpha(s). A powerlike evolution of the spin-singlet heavy quark operators is obtained to the same accuracy. We give an O(alpha(s)(2)) relation between the short-distance low-scale running heavy quark mass and the mass in the modified minimal subtraction scheme. We discuss the properties of an effective QCD coupling alpha(s)((d))(E) which governs the dipole radiation. We argue that this coupling is advantageous for describing heavy quark physics. C1 Univ Karlsruhe, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Petersburg Nucl Phys Inst, St Petersburg 188350, Russia. RP Czarnecki, A (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 27 TC 39 Z9 39 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3189 EP 3192 DI 10.1103/PhysRevLett.80.3189 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600007 ER PT J AU Artuso, M Azfar, F Efimov, A Goldberg, M He, D Kopp, S Moneti, GC Mountain, R Schuh, S Skwarnicki, T Stone, S Viehhauser, G Xing, X Bartelt, J Csorna, SE Jain, V McLean, KW Marka, S Godang, R Kinoshita, K Lai, IC Pomianowski, P Schrenk, S Bonvicini, G Cinabro, D Greene, R Perera, LP Zhou, GJ Chadha, M Chan, S Eigen, G Miller, JS O'Grady, C Schmidtler, M Urheim, J Weinstein, AJ Wurthwein, F Bliss, DW Masek, G Paar, HP Prell, S Sharma, V Asner, DM Gronberg, J Hill, TS Lange, DJ Morrison, RJ Nelson, HN Nelson, TK Roberts, D Ryd, A Balest, R Behrens, BH Ford, WT Park, H Roy, J Smith, JG Alexander, JP Baker, R Bebek, C Berger, BE Berkelman, K Bloom, K Boisvert, V Cassel, DG Crowcroft, DS Dickson, M von Dombrowski, S Drell, PS Ecklund, KM Ehrlich, R Foland, AD Gaidarev, P Gibbons, L Gittelman, B Gray, SW Hartill, DL Heltsley, BK Hopman, PI Kandaswamy, J Kim, PC Kreinick, DL Lee, T Liu, Y Mistry, NB Ng, CR Nordberg, E Ogg, M Patterson, JR Peterson, D Riley, D Soffer, A Valant-Spaight, B Ward, C Athanas, M Avery, P Jones, CD Lohner, M Patton, S Prescott, C Yelton, J Zheng, J Brandenburg, G Briere, RA Ershov, A Gao, YS Kim, DYJ Wilson, R Yamamoto, H Browder, TE Li, Y Rodriguez, JL Bergfeld, T Eisenstein, BI Ernst, J Gladding, GE Gollin, GD Hans, RM Johnson, E Karliner, I Marsh, MA Palmer, M Selen, M Thaler, JJ Edwards, KW Bellerive, A Janicek, R MacFarlane, DB Patel, PM Sadoff, AJ Ammar, R Baringer, P Bean, A Besson, D Coppage, D Darling, C Davis, R Kotov, S Kravchenko, I Kwak, N Zhou, L Anderson, S Kubota, Y Lee, SJ O'Neill, JJ Poling, R Riehle, T Smith, A Alam, MS Athar, SB Ling, Z Mahmood, AH Timm, S Wappler, F Anastassov, A Duboscq, JE Fujino, D Gan, KK Hart, T Honscheid, K Kagan, H Kass, R Lee, J Spencer, MB Sung, M Undrus, A Wanke, R Wolf, A Zoeller, MM Nemati, B Richichi, SJ Ross, WR Severini, H Skubic, P Bishai, M Fast, J Hinson, JW Menon, N Miller, DH Shibata, EI Shipsey, IPJ Yurko, M Glenn, S Johnson, SD Kwon, Y Roberts, S Thorndike, EH Jessop, CP Lingel, K Marsiske, H Perl, ML Savinov, V Ugolini, D Wang, R Zhou, X Coan, TE Fadeyev, V Korolkov, I Maravin, Y Narsky, I Shelkov, V Staeck, J Stroynowski, R Volobouev, I Ye, J AF Artuso, M Azfar, F Efimov, A Goldberg, M He, D Kopp, S Moneti, GC Mountain, R Schuh, S Skwarnicki, T Stone, S Viehhauser, G Xing, X Bartelt, J Csorna, SE Jain, V McLean, KW Marka, S Godang, R Kinoshita, K Lai, IC Pomianowski, P Schrenk, S Bonvicini, G Cinabro, D Greene, R Perera, LP Zhou, GJ Chadha, M Chan, S Eigen, G Miller, JS O'Grady, C Schmidtler, M Urheim, J Weinstein, AJ Wurthwein, F Bliss, DW Masek, G Paar, HP Prell, S Sharma, V Asner, DM Gronberg, J Hill, TS Lange, DJ Morrison, RJ Nelson, HN Nelson, TK Roberts, D Ryd, A Balest, R Behrens, BH Ford, WT Park, H Roy, J Smith, JG Alexander, JP Baker, R Bebek, C Berger, BE Berkelman, K Bloom, K Boisvert, V Cassel, DG Crowcroft, DS Dickson, M von Dombrowski, S Drell, PS Ecklund, KM Ehrlich, R Foland, AD Gaidarev, P Gibbons, L Gittelman, B Gray, SW Hartill, DL Heltsley, BK Hopman, PI Kandaswamy, J Kim, PC Kreinick, DL Lee, T Liu, Y Mistry, NB Ng, CR Nordberg, E Ogg, M Patterson, JR Peterson, D Riley, D Soffer, A Valant-Spaight, B Ward, C Athanas, M Avery, P Jones, CD Lohner, M Patton, S Prescott, C Yelton, J Zheng, J Brandenburg, G Briere, RA Ershov, A Gao, YS Kim, DYJ Wilson, R Yamamoto, H Browder, TE Li, Y Rodriguez, JL Bergfeld, T Eisenstein, BI Ernst, J Gladding, GE Gollin, GD Hans, RM Johnson, E Karliner, I Marsh, MA Palmer, M Selen, M Thaler, JJ Edwards, KW Bellerive, A Janicek, R MacFarlane, DB Patel, PM Sadoff, AJ Ammar, R Baringer, P Bean, A Besson, D Coppage, D Darling, C Davis, R Kotov, S Kravchenko, I Kwak, N Zhou, L Anderson, S Kubota, Y Lee, SJ O'Neill, JJ Poling, R Riehle, T Smith, A Alam, MS Athar, SB Ling, Z Mahmood, AH Timm, S Wappler, F Anastassov, A Duboscq, JE Fujino, D Gan, KK Hart, T Honscheid, K Kagan, H Kass, R Lee, J Spencer, MB Sung, M Undrus, A Wanke, R Wolf, A Zoeller, MM Nemati, B Richichi, SJ Ross, WR Severini, H Skubic, P Bishai, M Fast, J Hinson, JW Menon, N Miller, DH Shibata, EI Shipsey, IPJ Yurko, M Glenn, S Johnson, SD Kwon, Y Roberts, S Thorndike, EH Jessop, CP Lingel, K Marsiske, H Perl, ML Savinov, V Ugolini, D Wang, R Zhou, X Coan, TE Fadeyev, V Korolkov, I Maravin, Y Narsky, I Shelkov, V Staeck, J Stroynowski, R Volobouev, I Ye, J CA CLEO Collaboration TI Measurement of B(D-0 -> K-pi(+)) using partial reconstruction of (B)over-bar -> D(*+)Xl(-)(nu)over-bar SO PHYSICAL REVIEW LETTERS LA English DT Article AB We present a measurement of the absolute branching fraction for D-0 --> K- pi(+) using the reconstruction of the decay chain (B)over-bar --> D(*+)Xl(-)(v)over-bar, D*+ --> D-0 pi(+) when only the lepton and the low-momentum pion from the D*+ are detected. With data collected by the CLEO II detector at the Cornell Electron Storage Ring, we have determined B(D-0 --> K(-)pi(+)) = [3.81 +/- 0.15(stat) +/- 0.16(syst)]%. C1 Syracuse Univ, Syracuse, NY 13244 USA. Vanderbilt Univ, Nashville, TN 37235 USA. Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. Wayne State Univ, Detroit, MI 48202 USA. CALTECH, Pasadena, CA 91125 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Univ Colorado, Boulder, CO 80309 USA. Cornell Univ, Ithaca, NY 14853 USA. Univ Florida, Gainesville, FL 32611 USA. Harvard Univ, Cambridge, MA 02138 USA. Univ Hawaii Manoa, Honolulu, HI 96822 USA. Univ Illinois, Urbana, IL 61801 USA. Carleton Univ, Ottawa, ON K1S 5B6, Canada. Inst Particle Phys, Montreal, PQ, Canada. McGill Univ, Montreal, PQ H3A 2T8, Canada. Ithaca Coll, Ithaca, NY 14850 USA. Univ Kansas, Lawrence, KS 66045 USA. Univ Minnesota, Minneapolis, MN 55455 USA. SUNY Albany, Albany, NY 12222 USA. Ohio State Univ, Columbus, OH 43210 USA. Univ Oklahoma, Norman, OK 73019 USA. Purdue Univ, W Lafayette, IN 47907 USA. Univ Rochester, Rochester, NY 14627 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. So Methodist Univ, Dallas, TX 75275 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Univ Texas, Austin, TX 78712 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. BINP, RU-630090 Novosibirsk, Russia. Yonsei Univ, Seoul 120749, South Korea. RP Artuso, M (reprint author), Syracuse Univ, Syracuse, NY 13244 USA. RI Briere, Roy/N-7819-2014 OI Briere, Roy/0000-0001-5229-1039 NR 8 TC 8 Z9 8 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3193 EP 3197 DI 10.1103/PhysRevLett.80.3193 PG 5 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600008 ER PT J AU Hautmann, F AF Hautmann, F TI Effective QCD coupling and power corrections to photon-photon scattering SO PHYSICAL REVIEW LETTERS LA English DT Article ID RENORMALONS AB The scattering of two off-shell photons is an infrared-safe process in QCD. For photon virtualities Q in the range of a few GeV, accessible at the CERN e(+)e(-) collider LEP II, power-behaved contributions in (Lambda(QCD)/Q)(n) to the total cross section may become non-negligible. Based on a dispersion relation for the running coupling, we discuss these contributions and calculate the coefficients of the leading power correction for transversely polarized and longitudinally polarized virtual photons. C1 Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA. Brookhaven Natl Lab, High Energy Theory Grp, Upton, NY 11973 USA. RIKEN, BNL Res Ctr, Wako, Saitama, Japan. RP Hautmann, F (reprint author), Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA. NR 22 TC 8 Z9 8 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3198 EP 3201 DI 10.1103/PhysRevLett.80.3198 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600009 ER PT J AU Ji, HT Yamada, M Hsu, S Kulsrud, R AF Ji, HT Yamada, M Hsu, S Kulsrud, R TI Experimental test of the Sweet-Parker model of magnetic reconnection SO PHYSICAL REVIEW LETTERS LA English DT Article AB We report a quantitative experimental test of the Sweet-Parker model of magnetic reconnection in a controlled laboratory plasma. It is found that the observed reconnection rate can be explained by a generalized Sweet-Parker model which incorporates compressibility, downstream pressure, and the effective resistivity. The latter is significantly enhanced over its classical values in the collisionless limit. C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Ji, HT (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA. RI Yamada, Masaaki/D-7824-2015; OI Yamada, Masaaki/0000-0003-4996-1649; Hsu, Scott/0000-0002-6737-4934 NR 25 TC 140 Z9 142 U1 0 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3256 EP 3259 DI 10.1103/PhysRevLett.80.3256 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600024 ER PT J AU Wang, WZ Bishop, AR Gammel, JT Silver, RN AF Wang, WZ Bishop, AR Gammel, JT Silver, RN TI Quantum breathers in electron-phonon systems SO PHYSICAL REVIEW LETTERS LA English DT Article ID SOLITONS; LATTICE; STATES AB Quantum breathers are studied numerically in several electron-phonon coupled finite chain systems, in which the coupling results in intrinsic nonlinearity but with varying degrees of nonadiabaticity. As for quantum nonlinear lattice systems, we find that quantum breathers can exist as eigenstates of the system Hamiltonians. Optical responses are calculated as signatures of these coherent nonlinear excitations. We propose a new type of quantum nonlinear excitation, "breather excitons," which are bound states of breathers and excitons, whose properties are clarified with a minimal exciton-phonon model. C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Wang, WZ (reprint author), Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 17 TC 39 Z9 40 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3284 EP 3287 DI 10.1103/PhysRevLett.80.3284 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600031 ER PT J AU Fultz, B Stephens, TA Sturhahn, W Toellner, TS Alp, EE AF Fultz, B Stephens, TA Sturhahn, W Toellner, TS Alp, EE TI Local chemical environments and the phonon partial densities of states of Fe-57 in (Fe3Al)-Fe-57 SO PHYSICAL REVIEW LETTERS LA English DT Article ID NUCLEAR RESONANT SCATTERING; VIBRATIONAL ENTROPY; DISORDERED NI3AL; ALLOYS; FE3AL AB Inelastic nuclear resonant scattering spectra were measured on alloys of Fe3Al that were chemically disordered, partially ordered, and D0(3) ordered. The features in the phonon partial density of states of Fe-57 were found to change systematically with chemical short-range order in the alloy. Changes in the phonon partial density of states were modeled successfully by assigning vibrational spectra to Fe-57 atoms in different first-nearest-neighbor chemical environments. C1 CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Fultz, B (reprint author), CALTECH, Div Engn & Appl Sci, 138-78, Pasadena, CA 91125 USA. NR 19 TC 32 Z9 33 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3304 EP 3307 DI 10.1103/PhysRevLett.80.3304 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600036 ER PT J AU Rohlfing, M Louie, SG AF Rohlfing, M Louie, SG TI Excitonic effects and the optical absorption spectrum of hydrogenated Si clusters SO PHYSICAL REVIEW LETTERS LA English DT Article ID PARTICLE BAND-STRUCTURE; SURFACE-STATE ENERGIES; QUASI-PARTICLE; ELECTRONIC-STRUCTURE; SILICON CLUSTERS; SEMICONDUCTORS; NANOCRYSTALS; INSULATORS; GAPS AB We calculate the optical absorption spectrum of hydrogen-terminated silicon clusters by solving the Bethe-Salpeter equation for the two-particle Green's function using an ab initio approach. The one-particle Green's function and the electron-hole interaction kernel are calculated within the GW approximation for the electron self-energy operator. Very large exciton binding energies are observed. Our results for the one-particle properties and the optical absorption spectra of the clusters are in very good agreement with available experimental data. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Rohlfing, M (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 34 TC 268 Z9 268 U1 6 U2 36 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3320 EP 3323 DI 10.1103/PhysRevLett.80.3320 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600040 ER PT J AU Yoon, YG Pfrommer, BG Mauri, F Louie, SG AF Yoon, YG Pfrommer, BG Mauri, F Louie, SG TI NMR chemical shifts in hard carbon nitride compounds SO PHYSICAL REVIEW LETTERS LA English DT Article ID NUCLEAR-MAGNETIC-RESONANCE; DIAMOND-LIKE CARBON; STRUCTURAL-PROPERTIES; SHIELDING SCALE; GAS-PHASE; ION-BEAM; FILMS; SPECTROSCOPY; C-13; PSEUDOPOTENTIALS AB We show that NMR chemical shift spectroscopy could help to identify the crystalline phases of hard carbon nitride compounds. To this purpose we compute the NMR chemical shifts of defect zinc-blende, cubic, alpha-, beta-, and graphitic C3N4 with a newly developed ab initio method. The C shifts can be used to identify the CN bonds and to characterize C hybridization. The N shifts distinguish the alpha-C3N4 from the beta-C3N4 phases, and indicate the presence of the graphitic phase. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. PPH Ecublens, Inst Romand Rech Numer Phys Mat, CH-1015 Lausanne, Switzerland. RP Yoon, YG (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Yoon, Young-Gui/C-2978-2008; mauri, francesco/K-5726-2012 OI Yoon, Young-Gui/0000-0002-1071-8628; mauri, francesco/0000-0002-6666-4710 NR 38 TC 54 Z9 54 U1 0 U2 17 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 13 PY 1998 VL 80 IS 15 BP 3388 EP 3391 DI 10.1103/PhysRevLett.80.3388 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG567 UT WOS:000073016600057 ER PT J AU Giacomini, JC Gordon, H O'Neil, R Van Kessel, A Cason, B Chapman, D Lavendar, W Gmur, N Menk, R Thomlinson, W Zhong, Z Rubenstein, E AF Giacomini, JC Gordon, H O'Neil, R Van Kessel, A Cason, B Chapman, D Lavendar, W Gmur, N Menk, R Thomlinson, W Zhong, Z Rubenstein, E TI Bronchial imaging in humans using xenon K-edge dichromography SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID TRANSVENOUS CORONARY ANGIOGRAPHY; BENT LAUE MONOCHROMATOR; SYNCHROTRON-RADIATION; HYPERPOLARIZED HE-3; SYSTEM AB This report describes the initial use of K-edge xenon dichromography for imaging the bronchial tree in humans. The subjects inhale an anatomic dead-space volume of a mixture of 80% xenon and 20% oxygen, following which a dichromographic line-scan image is recorded using: two monochromatic synchrotron radiation beams closely bracketing the k-edge of xenon (34.56 keV). Images of airways, from main-stem bronchi to fourth-order branches, are recorded with a pixel resolution of 0.5 x 0.5 mm. The scanning rate is 12 cm/s, the line exposure time is 4 ms, the skin dose to the exposed area (125 mm x 150 mm) is < 0.35 rad. (C) 1998 Elsevier Science B.V. All rights reserved. C1 Stanford Univ, Sch Med, Hillsborough, CA 94010 USA. Univ Calif San Francisco, San Francisco, CA 94143 USA. IIT, Chicago, IL 60616 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Rubenstein, E (reprint author), Stanford Univ, Sch Med, 5 Waverly Pl, Hillsborough, CA 94010 USA. RI Chapman, Dean/I-6168-2013 OI Chapman, Dean/0000-0001-6590-4156 NR 24 TC 22 Z9 22 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 APR 11 PY 1998 VL 406 IS 3 BP 473 EP 478 DI 10.1016/S0168-9002(98)00195-8 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA ZP135 UT WOS:000073719900013 ER PT J AU Bonnell, DA Liang, Y Wagner, M Carroll, D Ruhle, M AF Bonnell, DA Liang, Y Wagner, M Carroll, D Ruhle, M TI Effect of size dependent interface properties on stability of metal clusters on ceramic substrates SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID SMALL PARTICLES; SURFACE STRESS; GOLD CLUSTERS; DEFORMATION; PLATINUM; COPPER; ENERGY; STATES AB The electronic properties of metal-ceramic interfaces are found to vary with the size of the inter face in the range of 3-100 nm. Interface properties can be extracted from variations in apparent heights of metal clusters, as measured by scanning tunneling microscopy, of small clusters on atomically smooth oxide surfaces. Relations that describe the size dependence in terms of parameters related to interfacial bonding are developed. The effect of the size dependent interface properties on metal cluster stability are explored by modeling the effect of the parameters that control contact potential and comparing the size dependence with that of the other contributions to the total energy. (C) 1998 Acta Metallurgica Inc. C1 Univ Penn, Dept Mat Sci, Philadelphia, PA 19104 USA. Pacific NW Natl Lab, Richland, WA USA. Max Planck Inst Met Res, Stuttgart, Germany. RP Univ Penn, Dept Mat Sci, Philadelphia, PA 19104 USA. NR 33 TC 27 Z9 28 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 EI 1873-2453 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2263 EP 2270 DI 10.1016/S1359-6454(97)00382-0 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700003 ER PT J AU French, RH Mullejans, H Jones, DJ Duscher, G Cannon, RM Ruhle, M AF French, RH Mullejans, H Jones, DJ Duscher, G Cannon, RM Ruhle, M TI Dispersion forces and Hamaker constants for intergranular films in silicon nitride from spatially resolved-valence electron energy loss spectrum imaging SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID GRAIN-BOUNDARY; OPTICAL-PROPERTIES; THIN-FILMS; CERAMIC SYSTEMS; GLASS; THICKNESS; PHASES; MICROSTRUCTURE; PARTICLES; ALUMINA AB The van der Waals (vdW) dispersion forces represent one of the Fundamental long range interfacial and surface forces in materials. The dispersion forces, for a set of materials in close proximity, arise from the electronic structure of the materials wherein the electrons in interatomic bonds acting as oscillating dipoles exhibit an attractive interaction energy. These vdW dispersion forces, represented by a proportionality constant, the full spectral Hamaker constant (A), can be calculated directly from optical property based electronic structure spectra such as the interband transition strength (J(cv)) using the Lifshitz theory. Si3N4 exhibits equilibrium intergranular films (IGFs) whose thickness is determined by a force balance where the contribution of the van der Waals dispersion force is dictated by the IGF chemistry. Using spatially resolved-valence electron energy loss (SR-VEEL) spectroscopy in the STEM with a 0.6 nm probe permits the in situ determination of vdW forces on the IGFs in viscous sintered polycrystalline systems. In addition local variations in IGF chemistry and dispersion forces throughout the microstructure of individual silicon nitride samples can be determined using these methods. From multiplexed zero loss/plasmon loss optimized SR-VEEL spectra across IGFs with subsequent single scattering deconvolution, Kramers Kronig analysis and London dispersion analysis, the index of refraction and Hamaker constants can be determined. The method proved to be accurate and reproducible with comparison to VUV measurements for the bulk materials and repealed measurements on numerous individual IGFs. For these optimized Si3N4 materials, the dispersion forces varied over a range from 2 to 12 zJ. These showed standard deviations on the order of 1 zJ for systems with IGFs. Additional systematic errors can not be excluded. Local variations in Hamaker constants within the microstructure of a single sample correlate to the distribution of IGF thicknesses observed, i.e. the thickness varies inversely with Hamaker constant. The technique of measuring Hamaker constants in situ represents an important new tool for dispersion force and wetting studies. For the first time it is observed that the thickness of the IGF scales with the local Hamaker constant of the investigated grain boundary region. (C) 1998 Acta Metallurgica Inc. C1 DuPont Co Inc, Cent Res, Wilmington, DE 19880 USA. Max Planck Inst Met Res, D-70174 Stuttgart, Germany. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP DuPont Co Inc, Cent Res, E356-384 Expt Stn, Wilmington, DE 19880 USA. RI French, Roger/E-1986-2011; Duscher, Gerd/G-1730-2014 OI French, Roger/0000-0002-6162-0532; Duscher, Gerd/0000-0002-2039-548X NR 66 TC 45 Z9 45 U1 1 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 EI 1873-2453 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2271 EP 2287 DI 10.1016/S1359-6454(97)00383-2 PG 17 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700004 ER PT J AU Yost, FG Sackinger, PA O'Toole, EJ AF Yost, FG Sackinger, PA O'Toole, EJ TI Energetics and kinetics of dissolutive wetting processes SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID CONTACT-ANGLE; SYSTEMS; DYNAMICS; SURFACE; DROPS; THERMODYNAMICS AB Dissolutive wetting occurs when a liquid wets and spreads over a solid surface with simultaneous dissolution of the solid into the liquid. It is shown that this process initially yields a metastable equilibrium and a compact model for the kinetics of approach to this metastable state is described. The technique for constructing these kinetics stems from the early work of Onsager and begins with a relationship for the entropy production. From this, a coupled set of nonlinear, ordinary differential rate equations can be written directly. The equations are solved numerically for the wetted area and compared with experimental data. The model captures many of the subtle complexities of dissolutive wetting such as metastable equilibria. The main weaknesses of the model are the assumptions of fully-stirred liquid and a spherical solid/liquid interface which were made to keep the analysis simple. (C) 1998 Acta Metallurgica Inc. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Yost, FG (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 37 TC 30 Z9 31 U1 1 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2329 EP 2336 DI 10.1016/S1359-6454(97)00389-3 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700010 ER PT J AU Saiz, E Tomsia, AP Cannon, RM AF Saiz, E Tomsia, AP Cannon, RM TI Ridging effects on wetting and spreading of liquids on solids SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID DYNAMICS; ALUMINA; EQUILIBRIUM; WETTABILITY; SYSTEMS; DROP AB Analysis of the triple junction for a liquid on a solid has emphasized conditions pertinent for metal and ceramic systems. Complementary experiments are largely for liquid metals on Al2O3 and also liquid silicates on metals. Ridges can form at the triple line in response to the vertical component of Force from surface tension. These are very small elastic distortions at lower temperatures. Where any local diffusion or solution-precipitation of the solid in the liquid can occur, the ridge can exceed atomic dimensions readily, and at high temperatures can become microns in size. If the liquid Front stays attached, drag from these ridges can limit the spreading velocity of the liquid. Four time regimes of interest are identified. First, at short times or low temperatures, inelastic ridges do not form and motion can be controlled by viscous flow of the fluid. In regime II, a small ridge can be carried by the front, whilst the macroscopic angle can simultaneously approach that from the Young-Dupre relationship. Owing to the existence of this latter regime, a range of conditions exists wherein it is possible to satisfy the classical Young equation macroscopically, and a more complete equilibrium locally. Finally, at longer limes more complex geometries will prevail while the system is evolving toward equilibrium, regime IV, which entails significantly deforming the solid. (C) 1998 Acta Metallurgica Inc. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Saiz, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 40 TC 137 Z9 138 U1 3 U2 42 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2349 EP 2361 DI 10.1016/S1359-6454(97)00391-1 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700012 ER PT J AU Glass, SJ Mahoney, FM Quillan, B Pollinger, JP Loehman, RE AF Glass, SJ Mahoney, FM Quillan, B Pollinger, JP Loehman, RE TI Refractory oxynitride joints in silicon nitride SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID SIALON-GLASS ADHESIVES; MECHANICAL-PROPERTIES AB Sintered silicon nitride was joined to itself by heating interlayers of refractory oxide compositions above their liquidus temperatures in flowing nitrogen. Only enough pressure was used to maintain alignment of the parts in the fixture. The oxide compositions were in the Y2O3-Al2O3-SiO2 and SrO-Al2O3-SiO2 families and the silicon nitride was from two commercial sources. Joined specimens were tested in four point flexure from room temperature to 1300 degrees C. A maximum strength of 555 MPa was observed at 1000 degrees C, which as far as we know is the highest 1000 degrees C strength ever observed for silicon nitride joined without high applied pressure. Quantitative measurements of composition profiles at the ceramic-oxide-ceramic interface revealed that interdiffusion of cations from the silicon nitride and the oxide joining material maintains local charge balance. (C) 1998 Acta Metallurgica Inc. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Norton St Gobain Inc, Worcester, MA USA. Univ New Mexico, Albuquerque, NM 87131 USA. AlliedSignal Aerosp Corp, Torrance, CA USA. RP Glass, SJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 16 TC 18 Z9 23 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2393 EP 2399 DI 10.1016/S1359-6454(97)00396-0 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700017 ER PT J AU Gopal, M De Jonghe, LC Thomas, G AF Gopal, M De Jonghe, LC Thomas, G TI Silicon nitride: From sintering to joining SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID CERAMICS; BEHAVIOR; PHASE; OXIDATION; STRENGTH AB In earlier work, silicon nitride (Si3N4) powders were sintered with a mixture of rare-earth oxide (RE2O3) and silica (SiO2). When the chemistry and sintering schedule is carefully controlled, the intergranular phase is a crystalline RE2Si2O7 phase, which imparts improved mechanical and oxidation properties to the Si3N4. Based on the premise that a material that is successful in joining individual grains will also be suitable for joining bulk pieces, the process has been extended to join bulk Si3N4. This method of joining causes the elimination of the joint, as the mechanism of joining is the same as that by which Si3N4 powder sinters. By analogy with the results for sintered compacts, it is predicted that the rare-earth oxide joined parts may also exhibit improved high temperature performance. (C) 1998 Acta Metallurgica Inc. C1 Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Adv Mat, Berkeley, CA 94720 USA. RP Gopal, M (reprint author), Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA. NR 16 TC 13 Z9 15 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2401 EP 2405 DI 10.1016/S1359-6454(97)00397-2 PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700018 ER PT J AU Moberlychan, WJ De Jonghe, LC AF Moberlychan, WJ De Jonghe, LC TI Controlling interface chemistry and structure to process and toughen silicon carbide SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID B-C ADDITIONS; CURVE BEHAVIOR; COMPOSITES; CERAMICS; NITRIDE AB Silicon carbide is difficult to process and the product is a brittle ceramic; however, the control of chemistry and structure at grain boundary interfaces offer the opportunity to enhance processing as well as to enhance the toughness (K-c > 9 MPa m(1/2)) and strength of this ceramic. An active chemistry and structure can alter the kinetics of interfacial motion during the processing of a structurally dense and uniform microstructure. The residual chemistry and structure at grain boundaries can control the mechanical properties both at ambient and high temperatures. The Al, B and C additives in ABC-SIC are discussed in this work, with regards to the effects of structure and chemistry on processing and properties. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Moberlychan, WJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 33 TC 20 Z9 20 U1 3 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2471 EP 2477 DI 10.1016/S1359-6454(98)80030-X PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700026 ER PT J AU Marshall, SJ Balooch, M Breunig, T Kinney, JH Tomsia, AP Inai, N Watanabe, LG Wu-Magidi, IC Marshall, GW AF Marshall, SJ Balooch, M Breunig, T Kinney, JH Tomsia, AP Inai, N Watanabe, LG Wu-Magidi, IC Marshall, GW TI Human dentin and the dentin-resin adhesive interface SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID SCANNING ELECTRON-MICROSCOPY; ATOMIC-FORCE MICROSCOPY; BOND STRENGTH; INTERDIFFUSION ZONE; COMPARATIVE SEM; HYBRID LAYER; SURFACES; NANOLEAKAGE; HARDNESS; TUBULES AB Dentin, the inner hard tissue of teeth, is a complex hydrated composite and forms the substrate for much of restorative dentistry. Current efforts to improve restorative and preventive dentistry involve the development of effective bonds to this tissue. Modern bonding techniques involve etching the dentin to remove the mineral portion, leaving a collagen network that can be infiltrated with a monomer and polymerized in place to form a mechanical bond. The objective of this study was to investigate the nature of the interfacial zone. called the resin-dentin interdiffusion zone, using scanning electron microscopy For characterization and thickness measurements, X-ray tomographic microscopy for fracture characteristics and atomic force microscopy for the local modulus and hardness variations. (C) 1998 Acta Metallurgica Inc. C1 Univ Calif San Francisco, Div Biomat Sci, Dept Restorat Dent, San Francisco, CA 94143 USA. Univ Calif Lawrence Livermore Natl Lab, Dept Chem & Mat Sci, Livermore, CA 94550 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Marshall, SJ (reprint author), Univ Calif San Francisco, Div Biomat Sci, Dept Restorat Dent, San Francisco, CA 94143 USA. NR 57 TC 14 Z9 14 U1 1 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2529 EP 2539 DI 10.1016/S1359-6454(98)80037-2 PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700033 ER PT J AU Pazo, A Saiz, E Tomsia, AP AF Pazo, A Saiz, E Tomsia, AP TI Silicate glass coatings on Ti-based implants SO ACTA MATERIALIA LA English DT Article; Proceedings Paper CT 3rd International Workshop on Interfaces CY SEP, 1996 CL SANTIAGO COMPOSTE, SPAIN SP Univ Santiago, Spanish Natl Res Council, Acta Met Inc ID BIOACTIVE GLASS; BIOCERAMICS AB Coating Ti-based implants with bioactive materials, able to form hydroxyapatite layers in vivo, facilitates joining between the prostheses and bone and increases the long-term stability of the implants. The present work describes a new route to coal Ti alloys with bioactive silica-based glasses. A new Family of potentially bioactive glasses that display good physical compatibility with Ti has been developed. In order to fabricate dense coatings, glass powder has been painted over the metal substrates and the assemblies have been fired to make the glass flow and adhere to the metal. The reactions that occur between the glass and the metal during this process have been studied by thin film X-ray diffraction and electron microprobe. By tailoring the glass composition and controlling the firing conditions (atmosphere, temperature and time) homogeneous coatings with good adhesion to the metal have been prepared. The physical characteristics of the glasses and their behavior in simulated body fluid are also reported. (C) 1998 Acta Metallurgica Inc. C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Santiago, Inst Ceram, E-15706 Santiago, Spain. RP Pazo, A (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 21 TC 95 Z9 98 U1 2 U2 10 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD APR 10 PY 1998 VL 46 IS 7 BP 2551 EP 2558 DI 10.1016/S1359-6454(98)80039-6 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA ZL740 UT WOS:000073465700035 ER PT J AU Lehnert, MD Becker, RH AF Lehnert, MD Becker, RH TI Spectroscopy of the extended emission associated with two high-z quasars SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE quasars : individual : PKS 0445+097; quasars : individual : PKS 2338+042; galaxies : evolution; radio continuum : galaxies ID HIGH-REDSHIFT QUASARS; RADIO-LOUD QUASARS; GALAXIES; SPECTRA; ATLAS; IDENTIFICATION; IMAGES; LINES AB We present spectra taken with the Low Resolution Imaging Spectrograph on the Keck 10m telescope of spatially-resolved structures ('fuzz') around the high-redshift radio-loud quasars PKS 0445+097 (z=2.108) and PKS 2338+042 (z=2.589). For PKS 0445+097 we oriented the slit such that it passed through the quasar nucleus and through an object identified on an HST exposure 1.8 " to the southeast of the nucleus. We find that this object has strong [OII]lambda 3727 emission and weaker emission due to [NeV]lambda 3426 and [NeIII]lambda 3869, at a redshift of z=0.8384. This redshift is very close (Delta v=200 km s(-1)) to that of a MgII absorption line identified in the spectrum of PKS 0445+097. The line ratios and narrowness of the lines indicate that this galaxy probably has a Seyfert 2 nucleus. Moreover, we find that there is faint extended HeII lambda 1640 and CIII]lambda 1909 from the quasar host galaxy. Both of the lines are broad (FWHM(H epsilon II)=1000 +/- 200 km s(-1) and FWHM=2200 +/- 600 kms(-1)). The limits on the fluxes, the large line widths, and the line ratio HeII/CIII]z are similar to that observed for high redshift radio galaxies. From the spectrum of PKS 2338+042, we find extended Ly alpha emission on scales about 10 " which is strongly one sided ton the side of the stronger, closer to the nucleus, more distorted radio lobe). The extended Ly alpha line is broad with widths of over 1000 km s(-1). The extended emission shows no evidence for a strong velocity shear. We also find weak extended CIV and Hen emission which has similar characteristics (line widths, line fluxes, and line ratios) to that of high redshift radio galaxies. In addition, we serendipitously discovered what appears to be a Ly alpha emitting galaxy about 29 " to the southeast of the quasar at z=2.665. The single line identified in the spectrum has a measure equivalent width of 2100 Angstrom and a full width at half maximum of 2150 km s(-1). The high equivalent width and large velocity width of the putative Ly alpha line suggest that this galaxy must be a high redshift AGN, although we note that the upper limits on the CIV and HeII line ratios are mildly inconsistent with this galaxy harboring an AGN. An approximate calculation shows the quasar nucleus is not exciting the Ly alpha emission from this galaxy. C1 Sterrewacht Leiden, NL-2300 RA Leiden, Netherlands. Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. Univ Calif Davis, Dept Phys & Astron, Davis, CA USA. RP Lehnert, MD (reprint author), Sterrewacht Leiden, Pob 9513, NL-2300 RA Leiden, Netherlands. NR 44 TC 15 Z9 15 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD APR 10 PY 1998 VL 332 IS 2 BP 514 EP 522 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZL153 UT WOS:000073404100010 ER PT J AU Szapudi, I AF Szapudi, I TI A new method for calculating counts in cells SO ASTROPHYSICAL JOURNAL LA English DT Article DE large-scale structure of universe; methods, numerical ID HIGHER-ORDER STATISTICS; GALAXY; UNIVERSE; SKEWNESS AB In the near future, a new generation of CCD-based galaxy surveys will enable high-precision determination of the N-point correlation functions. The resulting information will help to resolve the ambiguities associated with two-point correlation functions, thus constraining theories of structure formation, biasing, and Gaussianity of initial conditions independently of the value of Omega. As one of the most successful methods of extracting the amplitude of higher order correlations is based on measuring the distribution of counts in cells, this work presents an advanced way of measuring it with unprecedented accuracy. Szapudi & Colombi identified the main sources of theoretical errors in extracting counts in cells from galaxy catalogs. One of these sources, termed as measurement error, stems from the fact that conventional methods use a finite number of sampling cells to estimate counts in cells. This effect can be circumvented by using an infinite number of cells. This paper presents an algorithm, which in practice achieves this goal; that is, it is equivalent to throwing an infinite number of sampling cells in finite time. The errors associated with sampling cells are completely eliminated by this procedure, which will be essential for the accurate analysis of future surveys. C1 Fermi Natl Accelerator Lab, Theoret Astrophys Grp, Batavia, IL 60510 USA. RP Szapudi, I (reprint author), Fermi Natl Accelerator Lab, Theoret Astrophys Grp, POB 500, Batavia, IL 60510 USA. EM szapudi@traviata.fnal.gov NR 23 TC 26 Z9 26 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1998 VL 497 IS 1 BP 16 EP 20 DI 10.1086/305439 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZG883 UT WOS:000073049600003 ER PT J AU Wehrle, AE Pian, E Urry, CM Maraschi, L McHardy, IM Lawson, AJ Ghisellini, G Hartman, RC Madejski, GM Makino, F Marscher, AP Wagner, SJ Webb, JR Aldering, GS Aller, MF Aller, HD Backman, DE Balonek, TJ Boltwood, P Bonnell, J Caplinger, J Celotti, A Collmar, W Dalton, J Drucker, A Falomo, R Fichtel, CE Freudling, W Gear, WK Gonzalez-Perez, N Hall, P Inoue, H Johnson, WN Kazanas, D Kidger, MR Kii, T Kollgaard, RI Kondo, Y Kurfess, J Lin, YC McCollum, B McNaron-Brown, K Nagase, F Nair, AD Penton, S Pesce, JE Pohl, M Raiteri, CH Renda, M Robson, EI Sambruna, RM Schirmer, AF Shrader, C Sikora, M Sillanpaa, A Smith, PS Stevens, JA Stocke, J Takalo, LO Terasranta, H Thompson, DJ Thompson, R Tornikoski, M Tosti, G Treves, A Turcotte, P Unwin, SC Valtaoja, E Villata, M Xu, W Yamashita, A Zook, A AF Wehrle, AE Pian, E Urry, CM Maraschi, L McHardy, IM Lawson, AJ Ghisellini, G Hartman, RC Madejski, GM Makino, F Marscher, AP Wagner, SJ Webb, JR Aldering, GS Aller, MF Aller, HD Backman, DE Balonek, TJ Boltwood, P Bonnell, J Caplinger, J Celotti, A Collmar, W Dalton, J Drucker, A Falomo, R Fichtel, CE Freudling, W Gear, WK Gonzalez-Perez, N Hall, P Inoue, H Johnson, WN Kazanas, D Kidger, MR Kii, T Kollgaard, RI Kondo, Y Kurfess, J Lin, YC McCollum, B McNaron-Brown, K Nagase, F Nair, AD Penton, S Pesce, JE Pohl, M Raiteri, CH Renda, M Robson, EI Sambruna, RM Schirmer, AF Shrader, C Sikora, M Sillanpaa, A Smith, PS Stevens, JA Stocke, J Takalo, LO Terasranta, H Thompson, DJ Thompson, R Tornikoski, M Tosti, G Treves, A Turcotte, P Unwin, SC Valtaoja, E Villata, M Xu, W Yamashita, A Zook, A TI Multiwavelength observations of a dramatic high-energy flare in the blazar 3C 279 SO ASTROPHYSICAL JOURNAL LA English DT Article DE galaxies, photometry; gamma rays, observations; quasars, individual (3C 279); radiation mechanisms, nonthermal ID ACTIVE GALACTIC NUCLEI; RADIO-SOURCES; RAY-EMISSION; 3C-279; CALIBRATION; VARIABILITY; PHOTOMETRY; RADIATION; SYSTEM; JET AB The blazar 3C 279, one of the brightest identified extragalactic objects in the gamma-ray sky, underwent a large (factor of similar to 10 in amplitude) flare in gamma-rays toward the end of a 3 week pointing by Compton Gamma Ray Observatory (CGRO), in 1996 January-February. The flare peak represents the highest gamma-ray intensity ever recorded for this object. During the high state, extremely rapid gamma-ray variability was seen, including an increase of a factor of 2.6 in similar to 8 hr, which strengthens the case for relativistic beaming. Coordinated multifrequency observations were carried out with Rossi X-Ray Timing Explorer (RXTE), Advanced Satellite for Cosmology and Astrophysics (ASCA; ol, Astro-D), Roentgen Satellite (ROSAT), and Intel national Ultraviolet Explorer (IUE) and from many ground-based observatories, covering most accessible wavelengths. The well-sampled, simultaneous RXTE light curve shows an outburst of lower amplitude (factor of similar or equal to 3) well correlated with the gamma-ray flare without any lag larger than the temporal resolution of similar to 1 day. The optical-UV light curves, which are not well sampled during the high-energy flare, exhibit more modest variations (factor of similar to 2) and a lower degree of correlation. The flux at millimetric wavelengths was near a historical maximum during the gamma-ray flare peak, and there is a suggestion of a correlated decay. We present simultaneous spectral energy distributions of 3C 279 prior to and near to the flare peak. The gamma-rays vary by more than the square of the observed IR-optical flux change, which poses some problems for specific blazar emission models. The synchrotron self-Compton (SSC) model would require that the largest synchrotron variability occurred in the mostly unobserved submillimeter/far-infrared region. Alternatively, a large variation in the external photon held could occur over a timescale of a few days. This occurs naturally in the "mirror" model, wherein the flaring region in the jet photoionizes nearby broad emission line clouds, which, in turn, provide soft external photons that are Comptonized to gamma-ray energies. C1 Infrared Proc Anal Ctr, Jet Prop Lab, Pasadena, CA 91125 USA. CALTECH, Pasadena, CA 91125 USA. Space Telescope Sci Inst, Baltimore, MD 21218 USA. CNR, ITESRE, I-40129 Bologna, Italy. Osservatorio Astron Brera, I-20121 Milan, Italy. Univ Southampton, Dept Phys, Southampton SO9 5NH, Hants, England. Osservatorio Astron Brera, I-22055 Merate, Lecco, Italy. NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. Inst Space & Astronaut Sci, Kanagawa 229, Japan. Boston Univ, Dept Astron, Boston, MA 02215 USA. Landessternwarte, Heidelberg Konigsstuhl, D-69117 Heidelberg, Germany. Florida Int Univ, Dept Phys, Miami, FL 33199 USA. NOAO, KPNO, SARA Observ, Tucson, AZ 85726 USA. Univ Minnesota, Dept Astron, Minneapolis, MN 55455 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Franklin & Marshall Coll, Dept Phys & Astron, Lancaster, PA 17604 USA. Colgate Univ, Dept Phys & Astron, Hamilton, NY 13346 USA. SISSA, ISAS, I-34014 Trieste, Italy. Max Planck Inst Extraterr Phys, D-85740 Garching, Germany. Osservatorio Astron Padova, I-35122 Padua, Italy. Space Telescope European Coordinating Facil, D-85748 Garching, Germany. Univ Cent Lancashire, Ctr Astrophys, Preston PR1 2HE, Lancs, England. Inst Astrofis Canarias, E-38200 La Laguna, Tenerife, Spain. Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. USN, Res Lab, Washington, DC 20375 USA. Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Stanford Univ, WW Hansen Labs Phys, Stanford, CA 94305 USA. Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Univ Florida, Dept Astron, Gainesville, FL 32601 USA. Univ Colorado, JILA, Boulder, CO 80309 USA. Penn State Univ, Dept Astron, Davey Lab 525, University Pk, PA 16802 USA. Osservatorio Astron Torino, I-10025 Pino Torinese, Italy. Joint Astron Ctr, Hilo, HI 96720 USA. Polish Acad Sci, Copernicus Astron Ctr, Warsaw, Poland. Tuorla Observ, Tuorla 21500, Piikkio, Finland. Natl Opt Astron Observ, KPNO, Tucson, AZ 85726 USA. Metsahovi Radio Res Stn, Kylmala 02540, Finland. Univ Perugia, Osservatorio Astron, I-06100 Perugia, Italy. Univ Milan, Dept Phys, I-22100 Como, Italy. CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. Pomona Coll, Dept Phys & Astron, Claremont, CA 91711 USA. RP Wehrle, AE (reprint author), Infrared Proc Anal Ctr, Jet Prop Lab, MC 100-22, Pasadena, CA 91125 USA. RI Thompson, David/D-2939-2012; Tosti, Gino/E-9976-2013; Urry, Claudia/G-7381-2011; Johnson, Neil/G-3309-2014; OI Thompson, David/0000-0001-5217-9135; Urry, Claudia/0000-0002-0745-9792; Villata, Massimo/0000-0003-1743-6946; Falomo, Renato/0000-0003-4137-6541; Raiteri, Claudia Maria/0000-0003-1784-2784; Pian, Elena/0000-0001-8646-4858 NR 39 TC 203 Z9 208 U1 1 U2 3 PU UNIV CHICAGO PRESS PI CHICAGO PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1998 VL 497 IS 1 BP 178 EP 187 DI 10.1086/305461 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZG883 UT WOS:000073049600016 ER PT J AU Halkier, A Helgaker, T Jorgensen, P Klopper, W Koch, H Olsen, J Wilson, AK AF Halkier, A Helgaker, T Jorgensen, P Klopper, W Koch, H Olsen, J Wilson, AK TI Basis-set convergence in correlated calculations on Ne, N-2, and H2O SO CHEMICAL PHYSICS LETTERS LA English DT Article ID GAUSSIAN-BASIS SETS; 2ND-ORDER CORRELATION ENERGIES; COUPLED-CLUSTER SINGLES; MOLECULAR CALCULATIONS; CORRELATION CUSP; BENCHMARK; SYSTEMS; ATOMS; BORON; RATES AB Valence and all-electron correlation energies of Ne, N-2, and H2O at fixed experimental geometries are computed at the levels of second-order perturbation theory (MP2) and coupled cluster theory with singles and doubles excitations (CCSD), and singles and doubles excitations with a perturbative triples correction (CCSD(T)). Correlation-consistent polarized valence and core-valence basis sets up to sextuple zeta quality are employed. Guided by basis-set limits established by r(ij)-dependent methods, a number of extrapolation schemes for use with the correlation-consistent basis sets are investigated. Among the schemes considered here, a linear least-squares procedure applied to the quintuple and sextuple zeta results yields the most accurate extrapolations. (C) 1998 Elsevier Science B.V. C1 Aarhus Univ, Dept Chem, DK-8000 Aarhus, Denmark. Univ Oslo, Dept Chem, N-0315 Oslo, Norway. Lund Univ, Dept Theoret Chem, S-22100 Lund, Sweden. Pacific NW Lab, Richland, WA 99352 USA. RP Halkier, A (reprint author), Aarhus Univ, Dept Chem, Langelandsgade 140, DK-8000 Aarhus, Denmark. RI Helgaker, Trygve/I-2062-2012; Koch, Henrik/J-2537-2012; Klopper, Wim/I-3163-2014; Jorgensen, Poul/J-2896-2016 OI Helgaker, Trygve/0000-0002-5032-8392; Klopper, Wim/0000-0002-5219-9328; Jorgensen, Poul/0000-0002-9785-7427 NR 33 TC 1320 Z9 1323 U1 2 U2 97 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD APR 10 PY 1998 VL 286 IS 3-4 BP 243 EP 252 DI 10.1016/S0009-2614(98)00111-0 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA ZK016 UT WOS:000073276500010 ER PT J AU Urnov, AM Dubau, J Faenov, AY Pikuz, TA Skobelev, IY Abdallah, J Clark, REH Cohen, J Johnson, RP Kyrala, GA Wilke, MD Osterheld, AL AF Urnov, AM Dubau, J Faenov, AY Pikuz, TA Skobelev, IY Abdallah, J Clark, REH Cohen, J Johnson, RP Kyrala, GA Wilke, MD Osterheld, AL TI X-ray spectra of multiply-charged hollow ions in the emission from a femtosecond laser plasma SO JETP LETTERS LA English DT Article ID ATOMS; EXCITATION; SURFACE AB A new type of quasicontinuous emission spectrum from a femtosecond laser plasma near the Ly alpha line of H-like ions is obtained and interpreted. It is shown that these spectra are emitted by multiply charged hollow ions, which are present in the plasma on account of its ultrahigh density, which, in turn, is due to the use of high-contrast laser pulses for producing the plasma. A new spectroscopic approach based on analysis of the composition of spectral complexes of hollow ions is discussed. (C) 1998 American Institute of Physics. C1 PN Lebedev Phys Inst, Moscow 117924, Russia. Observ Paris, F-9211195 Midon, France. All Russia Sci Res Inst Physicotech & Radioelect, Ctr Data Spectra Multiply Charged Ions, Mendeleevo 141570, Moscow Region, Russia. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Urnov, AM (reprint author), PN Lebedev Phys Inst, Leninsky Prospect 53, Moscow 117924, Russia. NR 16 TC 37 Z9 37 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0021-3640 J9 JETP LETT+ JI Jetp Lett. PD APR 10 PY 1998 VL 67 IS 7 BP 489 EP 494 DI 10.1134/1.567715 PG 6 WC Physics, Multidisciplinary SC Physics GA ZQ865 UT WOS:000073910800007 ER PT J AU Rider, WJ Kothe, DB AF Rider, WJ Kothe, DB TI Reconstructing volume tracking SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE volume of fluid; volume tracking; interface tracking ID ADAPTIVE MESH REFINEMENT; FLUX-CORRECTED TRANSPORT; ADVECTION; ALGORITHMS; DYNAMICS; FLOW AB A new algorithm for the volume tracking of interfaces in two dimensions is presented. The algorithm is based upon a well-defined, second-order geometric solution of a volume evolution equation, The method utilizes local discrete material volume and velocity data to track interfaces of arbitrarily complex topology, A linearity-preserving, piecewise linear interface geometry approximation ensures that solutions generated retain second-order spatial accuracy. Second-order temporal accuracy is achieved by virtue of a multidimensional unsplit time integration scheme. We detail our geometrically based solution method, in which material volume fluxes are computed systematically with a set of simple geometric tasks, We then interrogate the method by testing its ability to track interfaces through large, controlled topology changes, whereby an initially simple interface configuration is subjected to vortical flows. Numerical results for these strenuous test problems provide evidence for the algorithm's improved solution quality and accuracy. (C) 1998 Academic Press. C1 Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, Hydrodynam Methods Grp X HM, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Mat Sci & Technol Div, Struct Property Relat Grp MST 8, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, Appl Theoret & Computat Phys Div, Hydrodynam Methods Grp X HM, POB 1663, Los Alamos, NM 87545 USA. EM wjr@lanl.gov; dbk@lanl.gov NR 45 TC 735 Z9 766 U1 3 U2 28 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 EI 1090-2716 J9 J COMPUT PHYS JI J. Comput. Phys. PD APR 10 PY 1998 VL 141 IS 2 BP 112 EP 152 DI 10.1006/jcph.1998.5906 PG 41 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA ZJ082 UT WOS:000073177700002 ER PT J AU Caramana, EJ Whalen, PP AF Caramana, EJ Whalen, PP TI Numerical preservation of symmetry properties of continuum problems SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article AB We investigate the problem of perfectly preserving a symmetry associated naturally with one coordinate system when calculated in a different coordinate system. This allows a much wider range of problems that may be viewed as perturbations of the given symmetry to be investigated. We study the problem of preserving cylindrical symmetry in two-dimensional Cartesian geometry and spherical symmetry in two-dimensional cylindrical geometry. We show that this can be achieved by a simple modification of the gradient operator used to compute the force in a staggered grid Lagrangian hydrodynamics algorithm. In the absence of the supposed symmetry we show that the new operator produces almost no change in the results because it is always close to the original gradient operator. Our technique thus results in a subtle manipulation of the spatial truncation error in favor of the assumed symmetry but only to the extent that it is naturally present in the physical situation. This not only extends the range of previous algorithms and the use of new ones for these studies, but for spherical or cylindrical calculations it reduces the sensitivity of the results to grid setup with equal angular zoning that has heretofore been necessary with these problems. (C) 1998 Academic Press. C1 Univ Calif Los Alamos Natl Lab, Hydrodynam Methods Grp, Appl Theoret & Computat Phys Div, Los Alamos, NM 87545 USA. RP Caramana, EJ (reprint author), Univ Calif Los Alamos Natl Lab, Hydrodynam Methods Grp, Appl Theoret & Computat Phys Div, POB 1663, Los Alamos, NM 87545 USA. NR 18 TC 30 Z9 35 U1 1 U2 4 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD APR 10 PY 1998 VL 141 IS 2 BP 174 EP 198 DI 10.1006/jcph.1998.5912 PG 25 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA ZJ082 UT WOS:000073177700004 ER PT J AU Rodgers, AJ Schwartz, SY AF Rodgers, AJ Schwartz, SY TI Lithospheric structure of the Qiangtang Terrane, northern Tibetan Plateau, from complete regional waveform modeling: Evidence for partial melt SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH LA English DT Article ID UPPER-MANTLE; CRUSTAL STRUCTURE; TECTONIC IMPLICATIONS; VELOCITY STRUCTURE; BENEATH TIBET; PROPAGATION CHARACTERISTICS; CONTINENTAL-CRUST; PHASE-VELOCITY; RAYLEIGH-WAVES; SOUTHERN TIBET AB We report models of P and S wave velocity and attenuation for the the crust and uppermost mantle of the Qiangtang Terrane, northern Tibetan Plateau, inferred by fitting reflectivity synthetic seismograms to observed complete regional waveforms. The data are three-component broadband seismograms recorded by the 1991-1992 WS-PASSCAL (Incorporated Research Institutions for Seismology - Program for Array Seismic Studies of the Continental Lithosphere) Tibetan Plateau Experiment and Global Seismic Network stations in the region. The Qiangtang Terrane has thick crust (65 +/- 5 km) with P and S wave velocities of 6.1-6.3 and 3.34-3.43 km/s, respectively, yielding an anomalously high crustal Poisson's ratio of 0.29 +/- 0.02. Seismic velocities of the upper mantle of the Qiangtang Terrane are normal for P waves and slow for S waves (8.10 and 4.35-4.41 km/s, respectively) with a high mantle Poisson's ratio of 0.29 +/- 10.01. Attenuation in the crust and upper mantle is high (Q(P) = 100-200 and Q(S) = 44-89). Modeling of the broadband P waveforms suggests that a decrease in mantle velocity occurs at about 160 km depth in the mantle; however, this is not unambiguously supported by the data and modeling. The crust and uppermost mantle of the Qiangtang Terrane probably contains partial melt based on the high Poisson's ratio, low shear wave velocities, and low Q. The absence of high-frequency Sn and the presence of volcanism of mantle lithospheric origin support the presence of partial melt. Crustal and uppermost mantle structure in the Qiangtang Terrane is different from that for the Lhasa Terrane (immediately to the south) based on results of our previous studies. The average crustal P and S wave velocities are 4% faster and 2% slower, respectively, in the Qiangtang Terrane relative to the Lhasa Terrane. This yields a significant difference in the crustal Poisson's ratio with values of 0.29 for the Qiangtang Terrane and 0.25 for the Lhasa Tenane. Differences in the uppermost mantle P and S wave velocities and Poisson's ratios of these two adjacent terranes cannot be explained by temperature differences alone. Using the mantle temperature estimates of McNamara et al. [1997] we suggest that partial melt of an ultramafic composition beneath the Qiangtang Terrane fits the velocity and Poisson's ratio estimates. C1 Univ Calif Lawrence Livermore Natl Lab, Geophys & Global Secur Div, Livermore, CA 94551 USA. Univ Calif Santa Cruz, Inst Tecton, Santa Cruz, CA 95064 USA. Univ Calif Santa Cruz, Dept Earth Sci, Santa Cruz, CA 95064 USA. RP Rodgers, AJ (reprint author), Univ Calif Lawrence Livermore Natl Lab, Geophys & Global Secur Div, L-205,POB 808, Livermore, CA 94551 USA. EM rodgers@s34.es.llnl.gov RI Rodgers, Arthur/E-2443-2011 NR 64 TC 56 Z9 62 U1 1 U2 7 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 APR 10 PY 1998 VL 103 IS B4 BP 7137 EP 7152 DI 10.1029/97JB03535 PG 16 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZG619 UT WOS:000073022200008 ER PT J AU Fink, SJ Baden, SB Kohn, SR AF Fink, SJ Baden, SB Kohn, SR TI Efficient run-time support for irregular block-structured applications SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING LA English DT Article AB Parallel implementations of scientific applications often rely on elaborate dynamic data structures with complicated communication patterns. We describe a set of intuitive geometric programming abstractions that simplify coordination of irregular block-structured scientific calculations without sacrificing performance. We have implemented these abstractions in KeLP, a C++ run-time library. KeLP's abstractions enable the programmer to express complicated communication patterns for dynamic applications and to tune communication activity with a high-level, abstract interface. We show that KeLP's flexible communication model effectively manages elaborate data motion patterns arising in structured adaptive mesh refinement and achieves performance comparable to hand-coded message-passing on several structured numerical kernels. (C) 1998 Academic Press. C1 Univ Calif San Diego, Dept Comp Sci & Engn, La Jolla, CA 92093 USA. Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA USA. RP Fink, SJ (reprint author), Univ Calif San Diego, Dept Comp Sci & Engn, La Jolla, CA 92093 USA. NR 39 TC 25 Z9 25 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0743-7315 J9 J PARALLEL DISTR COM JI J. Parallel Distrib. Comput. PD APR 10 PY 1998 VL 50 IS 1-2 BP 61 EP 82 DI 10.1006/jpdc.1998.1437 PG 22 WC Computer Science, Theory & Methods SC Computer Science GA ZT266 UT WOS:000074067400004 ER PT J AU Simon, HD Sohn, A Biswas, R AF Simon, HD Sohn, A Biswas, R TI HARP: A dynamic spectral partitioner SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING LA English DT Article ID ALGORITHM; GRAPHS AB Partitioning unstructured graphs is central to the parallel solution of computational science and engineering problems. Spectral partitioners, such as recursive spectral bisection (RSB), have proven effective in generating high-quality partitions of realistically sized meshes. The major problem which hindered their widespread use was their long execution times. This paper presents a new inertial spectral partitioner called HARP. The main objective of the proposed approach is to quickly partition the meshes at runtime for the dynamic load balancing framework JOVE which dynamically balances the computational loads of distributed-memory machines with a global view. The underlying principle of HARP is to find the eigenvectors of the unpartitioned vertices and then project them onto the eigenvectors of the original mesh. Results for various meshes ranging in size from 1000 to 100,000 vertices indicate that HARP can indeed partition meshes rapidly at runtime. Experimental results show that our largest mesh can be partitioned sequentially in only a few seconds on an SP-2, which is several times faster than other spectral partitioners, while maintaining the solution quality of the proven RSB method. These results indicate that graph partitioning can now be truly embedded in dynamically changing real-world applications. (C) 1998 Academic Press. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, NERSC, Berkeley, CA 94720 USA. New Jersey Inst Technol, Dept Comp & Informat Sci, Newark, NJ 07102 USA. NASA, Ames Res Ctr, MRJ Technol Solut, Moffett Field, CA 94035 USA. RP Simon, HD (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, NERSC, MS 50B-4230, Berkeley, CA 94720 USA. EM simon@nersc.gov; sohn@cis.njit.edu; rbiswas@nas.nasa.gov NR 24 TC 9 Z9 9 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0743-7315 J9 J PARALLEL DISTR COM JI J. Parallel Distrib. Comput. PD APR 10 PY 1998 VL 50 IS 1-2 BP 83 EP 103 DI 10.1006/jpdc.1998.1445 PG 21 WC Computer Science, Theory & Methods SC Computer Science GA ZT266 UT WOS:000074067400005 ER PT J AU Plimpton, S Attaway, S Hendrickson, B Swegle, J Vaughan, C Gardner, D AF Plimpton, S Attaway, S Hendrickson, B Swegle, J Vaughan, C Gardner, D TI Parallel transient dynamics simulations: Algorithms for contact detection and smoothed particle hydrodynamics SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING LA English DT Article ID COMPUTATIONS; RANGE; CODE; SPH AB Transient dynamics simulations are commonly used to model phenomena such as car crashes, underwater explosions, and the response of shipping containers to high-speed impacts. Physical objects in such a simulation are typically represented by Lagrangian meshes because the meshes can move and deform with the objects as they undergo stress. Fluids (gasoline, water) or fluid-like materials (soil) in the simulation can be modeled using the techniques of smoothed particle hydrodynamics. Implementing a hybrid mesh/particle model on a massively parallel computer poses several difficult challenges. One challenge is to simultaneously parallelize and load-balance both the mesh and particle portions of the computation. A second challenge is to efficiently detect the contacts that occur within the deforming mesh and between mesh elements and particles as the simulation proceeds. These contacts impart forces to the mesh elements and particles which must be computed at each timestep to accurately capture the physics of interest. In this paper we describe new parallel algorithms for smoothed particle hydrodynamics and contact detection which turn out to have several key features in common. Additionally, we describe how to join the new algorithms with traditional parallel finite element techniques to create an integrated particle/mesh transient dynamics simulation. Our approach to this problem differs from previous work in that we use three different parallel decompositions, a static one for the finite element analysis and dynamic ones for particles and for contact detection. We have implemented our ideas in a parallel version of the transient dynamics code PRONTO-SD and present results for the code running on the Pentium-based Intel Teraflop machine at Sandia. (C) 1998 Academic Press. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Plimpton, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 22 TC 27 Z9 27 U1 1 U2 8 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0743-7315 J9 J PARALLEL DISTR COM JI J. Parallel Distrib. Comput. PD APR 10 PY 1998 VL 50 IS 1-2 BP 104 EP 122 DI 10.1006/jpdc.1998.1433 PG 19 WC Computer Science, Theory & Methods SC Computer Science GA ZT266 UT WOS:000074067400006 ER PT J AU Bender, CM Boettcher, S AF Bender, CM Boettcher, S TI Quasi-exactly solvable quartic potential SO JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL LA English DT Letter AB A new two-parameter family of quasi-exactly solvable quartic polynomial potentials V(x) = -x(4) + 2iax(3) + (a(2) - 2b)x(2) + 2i(ab - J)x is introduced. Heretofore, it was believed that the lowest-degree one-dimensional quasi-exactly solvable polynomial potential is sextic, This belief is based on the assumption that the Hamiltonian must be Hermitian. However, it has recently been discovered that there are huge classes of non-Hermitian, Pr-symmetric Hamiltonians whose spectra are real, discrete, and bounded below. Replacing hermiticity by the weaker condition of PT symmetry allows for new kinds of quasi-exactly solvable theories. The spectra of this family of quartic potentials discussed here are also real, discrete and bounded below and the quasi-exact portion of the spectra consists of the lowest J eigenvalues. These eigenvalues are the roots of a Jth-degree polynomial. C1 Washington Univ, Dept Phys, St Louis, MO 63130 USA. Univ Calif Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Clark Atlanta Univ, Ctr Theoret Studies Phys Syst, Atlanta, GA 30314 USA. RP Bender, CM (reprint author), Washington Univ, Dept Phys, St Louis, MO 63130 USA. RI Boettcher, Stefan/G-2640-2010 OI Boettcher, Stefan/0000-0003-1273-6771 NR 15 TC 157 Z9 157 U1 2 U2 9 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0305-4470 J9 J PHYS A-MATH GEN JI J. Phys. A-Math. Gen. PD APR 10 PY 1998 VL 31 IS 14 BP L273 EP L277 DI 10.1088/0305-4470/31/14/001 PG 5 WC Physics, Multidisciplinary; Physics, Mathematical SC Physics GA ZK496 UT WOS:000073327800001 ER PT J AU Cai, ZX Dubey, G Welch, DO AF Cai, ZX Dubey, G Welch, DO TI Numerical simulations of flux-line lattices in layered superconductors SO PHYSICA C LA English DT Article DE flux-lines; Lawrence-Doniach model; C-66 ID MONTE-CARLO SIMULATION; VORTEX-LATTICE; BI2SR2CACU2O8 CRYSTALS; IRREVERSIBILITY LINE; TRANSITION; MODEL; FILMS AB A model of the effective interaction between the magnetic flux-lines in a layered superconductor is derived from the Lawrence-Doniach model. We show analytically that the intralayer interaction energy can be evaluated using the Ewald summation technique. To illustrate the usefulness of the simulation technique, the isothermal shear modulus c(66) of flux-line lattices with various values of the interlayer coupling strength was obtained with a Langevin dynamics simulation. (C) 1998 Published by Elsevier Science B.V. C1 Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10021 USA. RP Cai, ZX (reprint author), Brookhaven Natl Lab, Dept Appl Sci, Bldg 480,POB 5000, Upton, NY 11973 USA. NR 20 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD APR 10 PY 1998 VL 299 IS 1-2 BP 91 EP 98 DI 10.1016/S0921-4534(98)00077-X PG 8 WC Physics, Applied SC Physics GA ZM022 UT WOS:000073496900014 ER PT J AU Wang, GJ Volkow, ND Fowler, JS Hitzemann, RJ Pappas, NR Netusil, N AF Wang, GJ Volkow, ND Fowler, JS Hitzemann, RJ Pappas, NR Netusil, N TI Evaluation of gender difference in regional brain metabolic responses to lorazepam SO PSYCHIATRY RESEARCH-NEUROIMAGING LA English DT Article DE cerebral glucose metabolism; gender; lorazepam; pharmacological challenge ID SEX-DIFFERENCES; BLOOD-FLOW; DIAZEPAM; BENZODIAZEPINES; ABUSE; REPRODUCIBILITY; DISPOSITION; ALCOHOLICS; DEPRESSION; ANXIETY AB Women are prescribed benzodiazepines twice as frequently as man and there is evidence of differences in therapeutic responsiveness to benzodiazepines between genders. In this study we compared the regional brain metabolic response to benzodiazepines between male and female subjects. Sixteen healthy men and 12 healthy women were scanned with positron emission tomography (FET) and [F-18] fluorodeoxyglucose (FDG) twice: prior to placebo and prior to lorazepam (30 mu g/kg) on separate days. Lorazepam significantly and consistently decreased whole brain metabolism and the magnitude as well as the regional pattern of the changes was comparable for both genders (M = -4.7 +/- 3 and F = -3.9 +/- 3.8 mu mol/100 g/min). Lorazepam effects were largest in thalamus (-12.5 +/- 6.2 and -8.6 +/- 7.1 mu mol/100 g/min) and occipital cortex (-10.5 +/- 5.5 and -10.1 +/- 6.6 mu mol/100 g/min). Lorazepam-induced changes in 'relative' metabolism were also similar for both genders except for trend differences (0.01 < P < 0.05) in rectal gyrus, where lorazepam increased relative metabolism in women (+ 4.4 +/- 9.9%) whereas it decreased in men (-3.2 +/- 8.8%, P < 0.04) and in cerebellum, where lorazepam-induced decrements were larger in women (-5.9 +/- 6%) than in men (-1.1% +/- 6.6%, P < 0.05). There were no differences between genders for any of the behavioral effects of lorazepam. In summary, this study does not show differences in the response to lorazepam between the genders as assessed by its behavioral effects and the changes in absolute metabolism; the trend toward a difference in the relative changes in rectal gyrus and cerebellum merits further investigation. (C) 1998 Elsevier Science Ireland Ltd. C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. SUNY Stony Brook, Dept Radiol, Stony Brook, NY 11794 USA. SUNY Stony Brook, Dept Psychiat, Stony Brook, NY 11794 USA. Vet Affairs Med Ctr, Psychiat Serv, Northport, NY 11768 USA. RP Wang, GJ (reprint author), Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. EM gjwang@bnl.gov FU NIAAA NIH HHS [1RO1 AA09481-01] NR 34 TC 10 Z9 10 U1 0 U2 1 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0925-4927 J9 PSYCHIAT RES-NEUROIM JI Psychiatry Res. Neuroimaging PD APR 10 PY 1998 VL 82 IS 1 BP 37 EP 46 DI 10.1016/S0925-4927(98)00002-X PG 10 WC Clinical Neurology; Neuroimaging; Psychiatry SC Neurosciences & Neurology; Psychiatry GA ZT798 UT WOS:000074128500004 PM 9645549 ER PT J AU Shen, ZX White, PJ Feng, DL Kim, C Gu, GD Ikeda, H Yoshizaki, R Koshizuka, N AF Shen, ZX White, PJ Feng, DL Kim, C Gu, GD Ikeda, H Yoshizaki, R Koshizuka, N TI Temperature-induced momentum-dependent spectral weight transfer in Bi2Sr2CaCu2O8+delta SO SCIENCE LA English DT Article ID ANGLE-RESOLVED PHOTOEMISSION; T-C SUPERCONDUCTORS; SINGLE-CRYSTALS; HUBBARD-MODEL; NORMAL-STATE; GAP; LA1.85SR0.15CUO4; SR2CUO2CL2; EVOLUTION; BEHAVIOR AB Angle-resolved photoemission data from the cuprate superconductor Bi2Sr2CaCu2O8+delta above and below the superconducting transition temperature T-c reveal momentum-dependent changes that extend up to an energy of about 0.3 electron volt, or 40kT(c) (where k is the Boltzmann constant). The data suggest an anomalous transfer of spectral weight from one momentum to another, involving a sizable momentum transfer Q similar to (0.45 pi, 0). The observed Q is intriguingly near the charge-order periodicity required if fluctuating charge stripes are present. C1 Stanford Univ, Dept Phys, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. Univ New S Wales, Sch Phys, Kensington, NSW 2033, Australia. Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 305, Japan. Univ Tsukuba, Cryogen Ctr, Tsukuba, Ibaraki 305, Japan. ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 135, Japan. RP Shen, ZX (reprint author), Stanford Univ, Dept Phys, Stanford, CA 94305 USA. NR 44 TC 66 Z9 66 U1 2 U2 8 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD APR 10 PY 1998 VL 280 IS 5361 BP 259 EP 262 DI 10.1126/science.280.5361.259 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA ZH195 UT WOS:000073082400042 ER PT J AU Hammer, L Kottcke, M Weiss, W Wimmer, A Zehner, DM Heinz, K AF Hammer, L Kottcke, M Weiss, W Wimmer, A Zehner, DM Heinz, K TI Hydrogen on MoxRe1-x(100) - the impact of alloying on the adsorption structure SO SURFACE SCIENCE LA English DT Article DE alloys; chemisorption; electron energy loss spectroscopy; electron-solid interaction, scattering, diffraction; hydrogen; low energy electron diffraction (LEED); low index single crystal surfaces; surface relaxation and reconstruction ID SURFACE-STRUCTURE DETERMINATION; ENERGY ELECTRON-DIFFRACTION; VIBRATIONAL-MODES; ION-SCATTERING; LEED; RECONSTRUCTION; MO(100); W(100); CHEMISORPTION; SEGREGATION AB Hydrogen adsorption at the (100) surfaces of the substitutionally disordered alloy MoxRe1-x was studied for three values of the bulk stoichiometry (x=0.75, 0.85 and 0.95) by high resolution electron energy loss spectroscopy (HREELS) and quantitative low energy electron diffraction (LEED). The minority constituent Re is found to be completely depleted in the topmost layer and thus the local adsorption complex with hydrogen bridge-bonded to two substrate atoms is very similar to that retrieved on pure Mo(100). Nevertheless, the Re accumulation found for the second layer inhibits (x=0.75,0.85) or strongly modifies (x=0.95) the development of ordered adsorption phases known from pure Mo(100) at submonolayer coverages. This behaviour might be due to the considerable substitutional disorder in the second layer. At maximum coverage, O-H=2, LEED intensity analyses reveal a strong derelaxation of the uppermost two layer spacings. Surprisingly, however, the relaxations of deeper interlayer spacings remain practically unchanged with respect to those of the clean surfaces. This is interpreted to be caused by the frozen-in oscillatory concentration profile and thus reveals a further mechanism to drive surface relaxations. (C) 1998 Elsevier Science B.V. All rights reserved. C1 Univ Erlangen Nurnberg, Lehrstuhl Festkorperphys, D-91058 Erlangen, Germany. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Hammer, L (reprint author), Univ Erlangen Nurnberg, Lehrstuhl Festkorperphys, Staudtstr 7, D-91058 Erlangen, Germany. RI Hammer, Lutz/D-9863-2013 NR 31 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD APR 10 PY 1998 VL 401 IS 3 BP 455 EP 468 DI 10.1016/S0039-6028(98)00052-1 PG 14 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA ZX830 UT WOS:000074559700022 ER PT J AU Carpinelli, JM Weitering, HH Plummer, EW AF Carpinelli, JM Weitering, HH Plummer, EW TI Charge rearrangement in the GexPb1-x/Ge(111) interface SO SURFACE SCIENCE LA English DT Letter DE electron-solid scattering and transmission - inelastic; germanium; lead; low index single crystal surfaces; scanning tunneling microscopy; scanning tunneling spectroscopies; surface electronic phenomena ID SCANNING-TUNNELING-MICROSCOPY; PHOTOELECTRON-SPECTROSCOPY; SUBMONOLAYER PHASES; PB; SURFACE; GE(111); SI(111); RECONSTRUCTION; ADSORPTION; COVERAGE AB We have investigated a non-metal-metal transition, novel in-plane ordering and STM imaging contrast, all of which evolve as a function of Pb concentration in the two-dimensional solid solution GexPb1-x/Ge(111). The cause of these is a local charge rearrangement between the surface Pb and Ce adatoms. (C) 1998 Elsevier Science B.V. All rights reserved. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. RP Carpinelli, JM (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. NR 29 TC 23 Z9 24 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD APR 10 PY 1998 VL 401 IS 3 BP L457 EP L463 DI 10.1016/S0039-6028(98)00146-0 PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA ZX830 UT WOS:000074559700007 ER PT J AU Gutowski, M Jordan, KD Skurski, P AF Gutowski, M Jordan, KD Skurski, P TI Electronic structure of dipole-bound anions SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID FRANCK-CONDON PRINCIPLE; VIBRONIC TRANSITIONS; POLYATOMIC-MOLECULES; DYNAMICAL SYMMETRY; POLAR-MOLECULES; EXCITED-STATES; BASIS-SETS; BINDING; ATOMS; PROPADIENYLIDENE AB Dipole-bound anionic states of HCN, (HF)(2), CH3CN, C3H2, C4H2, C5H2, and stretched CH3F are studied using extended one-electron basis sets at thr coupled cluster level of theory with single, double, and noniterative triple excitations (CCSD(T)). Orbital relaxation and electron correlation corrections to the Koopmans' theorem prediction of electron binding energy an analyzed, and a physical interpretation of low-order corrections is proposed. It is demonstrated that the second-order dispersion interaction between the loosely bound electron and the electrons of the neutral host should be included into physical models of dipole-bound anions. Higher-order electron correlation corrections are also found to be important, and a slow convergence of the Moller-Plesset series for electron binding energies is documented. Modifications of the potential energy surfaces of the above polar molecules upon electron attachment are studied at the second-order Moller-Plesset level, and Franck-Condon factors for the anion/neutral pairs an calculated. It is predicted that photoelectron spectra of the dipole-bound anions of C4H2 and C5H2 should display vibrational structure. C1 Pacific NW Lab, Solid State Theory Grp, Richland, WA 99352 USA. Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA. Univ Colorado, Joint Inst Lab Astrophys, Boulder, CO 80309 USA. Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA. Univ Gdansk, Dept Chem, PL-80952 Gdansk, Poland. RP Gutowski, M (reprint author), Pacific NW Lab, Solid State Theory Grp, POB 999, Richland, WA 99352 USA. NR 49 TC 124 Z9 124 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD APR 9 PY 1998 VL 102 IS 15 BP 2624 EP 2633 DI 10.1021/jp980123u PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA ZJ962 UT WOS:000073271200019 ER PT J AU Picorel, R Chumanov, G Torrado, E Cotton, TM Seibert, M AF Picorel, R Chumanov, G Torrado, E Cotton, TM Seibert, M TI Surface-enhanced resonance Raman scattering spectroscopy of plant photosystem II reaction centers excited on the red-edge of the Q(y) band SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Letter ID REACTION-CENTER COMPLEXES; PHOTOSYNTHETIC PROTEINS; FLUORESCENCE; INTEGRITY; SPECTRA; STATE AB Using surface-enhanced resonance Raman scattering (SERRS) spectroscopy techniques, we have obtained vibrational spectra from the higher plant D1-D2-cytochrome b559 photosystem II reaction center complex by exciting directly into the red-edge of the Q(y) transitions of chlorophyll and pheophytin bound within the protein complex. The presence of the SERRS-active metallic Ag surface dramatically reduced the high fluorescence yield from these pigments, a serious problem that has prevented detection of resonance Raman scattering signals in the past. This report constitutes the first successful attempt to measure Raman spectra from an oxygenic photosynthetic pigment-protein complex by excitation within the Q(y) transition. Consequently. SERRS spectroscopy now shows promise as an alternative vibrational spectroscopy to FT-IR for selectively examining energy transfer and redox-active chromophores involved in the dynamics of the primary processes of photosynthesis. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. CSIC, Estac Expt Aula Dei, E-50080 Zaragoza, Spain. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Seibert, M (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM seibertm@tcplink.nrel.gov RI PICOREL, RAFAEL/K-7930-2014 OI PICOREL, RAFAEL/0000-0003-3791-129X NR 32 TC 14 Z9 14 U1 0 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5647 J9 J PHYS CHEM B JI J. Phys. Chem. B PD APR 9 PY 1998 VL 102 IS 15 BP 2609 EP 2613 DI 10.1021/jp980188x PG 5 WC Chemistry, Physical SC Chemistry GA ZJ961 UT WOS:000073271100001 ER PT J AU Stern, LA Hogenboom, DL Durham, WB Kirby, SH Chou, IM AF Stern, LA Hogenboom, DL Durham, WB Kirby, SH Chou, IM TI Optical-cell evidence for superheated ice under gas-hydrate-forming conditions SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID CLATHRATE HYDRATE; SYSTEM AB We previously reported indirect but compelling evidence that fine-grained H2O ice under elevated CH4 gas pressure can persist to temperatures well above its ordinary melting point while slowly reacting to form methane clathrate hydrate. This phenomenon has now been visually verified by duplicating these experiment in an optical cell while observing the very slow hydrate-forming process as the reactants were warmed from 250 to 290 K at methane pressures of 23 to 30 MPa. Limited hydrate growth occurred rapidly after initial exposure of the methane gas to the ice grains at temperatures well within the ice subsolidus region. No evidence for continued growth of the hydrate phase was observed until samples were warmed above the equilibrium H2O melting curve. With continued heating, no bulk melting of the ice grains or free liquid water was detected anywhere within the optical cell until hydrate dissociation conditions were reached (292 K at 30 MPa). even though full conversion of the ice grains to hydrate requires 6-8 h at temperatures approaching 290 K. In a separate experimental sequence, unreacted portions of H2O ice grains that had persisted to temperatures above their ordinary melting point were successfully induced to melt, without dissociating the coexisting hydrate in the sample tube, by reducing the pressure overstep of the equilibrium phase boundary and thereby reducing the rate of hydrate growth at the ice-hydrate interface. Results from similar tests using CO2 as the hydrate-forming species demonstrated that this superheating effect is not unique to the CH4-H2O system. C1 US Geol Survey, Branch Earthquake Geol & Geophys, Menlo Park, CA 94025 USA. Lafayette Coll, Dept Phys, Easton, PA 18042 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. US Geol Survey, Natl Ctr 955, Reston, VA 20192 USA. RP Stern, LA (reprint author), US Geol Survey, Branch Earthquake Geol & Geophys, MS-977,345 Middlefield Rd, Menlo Park, CA 94025 USA. EM 1stern@isdmn1.wr.usgs.gov; hogenbod@lafayette.edu; durham1@llnl.gov; skirby@isdmnl.wr.usgs.gov; imchou@usgs.gov NR 27 TC 23 Z9 24 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5647 J9 J PHYS CHEM B JI J. Phys. Chem. B PD APR 9 PY 1998 VL 102 IS 15 BP 2627 EP 2632 DI 10.1021/jp973108i PG 6 WC Chemistry, Physical SC Chemistry GA ZJ961 UT WOS:000073271100004 ER PT J AU Gang, H Gang, O Shao, HH Wu, XZ Patel, J Hsu, CS Deutsch, M Ocko, BM Sirota, EB AF Gang, H Gang, O Shao, HH Wu, XZ Patel, J Hsu, CS Deutsch, M Ocko, BM Sirota, EB TI Rotator phases and surface crystallization in alpha-eicosene SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID ODD-NUMBERED PARAFFINS; LIQUID NORMAL-ALKANES; N-ALKANES; X-RAY; MOLECULAR-MOTION; SOLID-STATE; MIXTURES; TRANSITIONS; SCATTERING; C17H36 AB The rotator phases and surface crystallization of alpha-eicosene were studied using surface and bulk X-ray scattering techniques as well as surface tensiometry. The alpha-olefin differs from the,I-alkane in a weak breaking of the molecular inversion symmetry. Behavior qualitatively the same as, but quantitatively different from, the corresponding n-alkane was observed. The temperature range of stability of the bulk rotator and surface crystal phases was enhanced. The broken inversion symmetry of the molecule did not manifest itself in the nature of these phases. C1 ExxonMobil Res & Engn Co, Annandale, NJ 08801 USA. Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel. No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP ExxonMobil Res & Engn Co, Route 22 E, Annandale, NJ 08801 USA. EM ebsirot@erenj.com RI Sirota, Eric/A-7633-2009 NR 34 TC 25 Z9 25 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD APR 9 PY 1998 VL 102 IS 15 BP 2754 EP 2758 DI 10.1021/jp980603l PG 5 WC Chemistry, Physical SC Chemistry GA ZJ961 UT WOS:000073271100021 ER PT J AU Ho, KM Shvartsburg, AA Pan, BC Lu, ZY Wang, CZ Wacker, JG Fye, JL Jarrold, MF AF Ho, KM Shvartsburg, AA Pan, BC Lu, ZY Wang, CZ Wacker, JG Fye, JL Jarrold, MF TI Structures of medium-sized silicon clusters SO NATURE LA English DT Article ID SI CLUSTERS; ELECTRONIC-STRUCTURE; SPECTRA AB Silicon is the most important semiconducting material in the microelectronics industry, If current miniaturization trends continue, minimum device features will soon approach the size of atomic clusters. In this size regime, the structure and properties of materials often differ dramatically from those of the hulk, An enormous effort has been devoted to determining the structures of free silicon clusters(1-22). Although progress has been made for Si-n with n < 8, theoretical predictions for larger clusters are contradictory(2-22) and none enjoy any compelling experimental support, Here we report geometries calculated for medium-sized silicon clusters using an unbiased global search with a genetic algorithm. Ion mobilities(23) determined for these geometries by trajectory calculations are in excellent agreement,vith the values that we measure experimentally, The cluster geometries that we obtain do not correspond to fragments of the hulk, For n = 12-18 they are built on a structural motif consisting of a stack of Si-9 tricapped trigonal prisms, For n greater than or equal to 19, our calculations predict that near-spherical cage structures become the most stable, The transition to these more spherical geometries occurs in the measured mobilities for slightly larger clusters than in the calculations, possibly because of entropic effects. C1 Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. Iowa State Univ Sci & Technol, Ames Lab, US DOE, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA. RP Jarrold, MF (reprint author), Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA. EM mfj@chem.nwu.edu RI 上官, 敏慧/E-8964-2012 NR 34 TC 533 Z9 544 U1 4 U2 50 PU MACMILLAN MAGAZINES LTD PI LONDON PA PORTERS SOUTH, 4 CRINAN ST, LONDON, ENGLAND N1 9XW SN 0028-0836 J9 NATURE JI Nature PD APR 9 PY 1998 VL 392 IS 6676 BP 582 EP 585 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA ZG300 UT WOS:000072987200053 ER PT J AU Hall, LJ Moroi, T Murayama, H AF Hall, LJ Moroi, T Murayama, H TI Sneutrino cold dark matter with lepton-number violation SO PHYSICS LETTERS B LA English DT Article ID DYNAMICAL SUPERSYMMETRY BREAKING; SCALAR NEUTRINOS; TAU-NEUTRINO; CONSTRAINTS; MASS; ANISOTROPIES; INFLATION; UNIVERSE; MODELS; COBE AB The tau sneutrino is proposed as a candidate for galactic halo dark matter, and as the cold dark matter (CDM) component of the universe. A lepton-number-violating sneutrino mass, <(nu)over tilde><(nu)over tilde>, splits the tau sneutrino into two mass eigenstates: <(nu)over tilde> --> <(nu)over tilde>(+/-). The absence of a Z<(nu)over tilde>(-)<(nu)over tilde>(-) coupling implies that the lighter mass eigenstate, <(nu)over tilde>(-), does not annihilate via the s-channel Z-exchange to a low cosmological abundance, and furthermore, halo sneutrinos do not scatter excessively in Ge detectors. For the majority of the relevant parameter space, the event rate in Ge detectors is greater than or equal to 10(-2) events/kg/day. The lepton number violation required for sneutrino CDM implies that the tau neutrino mass is m(nu tau)greater than or similar to 5 MeV, large enough to be excluded by B factory experiments. Events of the form l(+)l(-)E or jjE, with low m(ll) or m(jj), may be observed at LEP2. A seesaw mechanism is investigated as the origin for the lepton number violation, and several other cosmological and particle physics consequences of sneutrino CDM are discussed. (C) 1998 Elsevier Science B.V. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Hall, LJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RI Murayama, Hitoshi/A-4286-2011 NR 47 TC 111 Z9 111 U1 1 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 APR 9 PY 1998 VL 424 IS 3-4 BP 305 EP 312 DI 10.1016/S0370-2693(98)00196-8 PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA ZQ943 UT WOS:000073918600013 ER PT J AU Blank, DA Suits, AG Lee, YT North, SW Hall, GE AF Blank, DA Suits, AG Lee, YT North, SW Hall, GE TI Photodissociation of acrylonitrile at 193 nm: A photofragment translational spectroscopy study using synchrotron radiation for product photoionization SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID ADVANCED LIGHT-SOURCE; ULTRAVIOLET PHOTODISSOCIATION; CHEMICAL-DYNAMICS; ENERGY; CHLOROETHYLENES; HCL; ELIMINATION; VINYLIDENE; ACETYLENE; ETHYLENE AB We have investigated the photodissociation of acrylonitrile (H2CCHCN) at 193 nm using the technique of photofragment translational spectroscopy. The experiments were performed at the Chemical Dynamics Beamline at the Advanced Light Source and used tunable vacuum ultraviolet synchrotron radiation for product photoionization, We have identified four primary dissociation channels including atomic and molecular hydrogen elimination, HCN elimination, and CN elimination. There is significant evidence that all of the dissociation channels occur on the ground electronic surface following internal conversion from the initially optically prepared state. The product translational energy distributions reflect near statistical simple bond rupture for the radical dissociation channels, while substantial recombination barriers mediate the translational energy release for the two molecular elimination channels. Photoionization onsets have provided additional insight into the chemical identities of the products and their internal energy content, (C) 1998 American Institute of Physics. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Blank, DA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RI Lee, Yuan-Tseh/F-7914-2012; North, Simon/G-5054-2012; Hall, Gregory/D-4883-2013 OI North, Simon/0000-0002-0795-796X; Hall, Gregory/0000-0002-8534-9783 NR 35 TC 23 Z9 24 U1 1 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD APR 8 PY 1998 VL 108 IS 14 BP 5784 EP 5794 DI 10.1063/1.475989 PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA ZG505 UT WOS:000073010400018 ER PT J AU Wiederrecht, GP Wasielewski, MR AF Wiederrecht, GP Wasielewski, MR TI Photorefractivity in polymer-stabilized nematic liquid crystals SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article AB The charge generation and transport properties of nematic liquid crystals doped with electron donors and accepters are shown to be strongly modified by the addition of low concentrations of a polymeric electron acceptor. These new liquid crystalline composites exhibit significantly enhanced photorefractive properties. The new composites are produced by polymerizing a small quantity of a 1,4:5,8-naphthalenediimide electron acceptor functionalized with an acrylate group in an aligned nematic liquid crystal. Photopolymerization creates an anisotropic gellike medium in which the liquid crystal is free to reorient in the presence of a space-charge field while maintaining charge-trapping sites in the polymerized regions of the material. The presence of these trapping sites results in the observation of longer lived, higher resolution holographic gratings in the polymer-stabilized liquid crystals than observed in nematic liquid crystals alone. These gratings display Bragg regime diffraction. Asymmetric beam coupling, photoconductivity, and four-wave mixing experiments are performed to characterize the photophysics of these novel materials. The mechanism of charge transport in the polymer-stabilized liquid crystals is also discussed. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. RP Wasielewski, MR (reprint author), Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 32 TC 91 Z9 93 U1 1 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD APR 8 PY 1998 VL 120 IS 13 BP 3231 EP 3236 DI 10.1021/ja974033z PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA ZH106 UT WOS:000073072700028 ER PT J AU Mobley, TA Bergman, RG AF Mobley, TA Bergman, RG TI The use of a planar chiral ligand to effect C-H activation with asymmetric induction at an iridium center. Dramatically different C-H activation stereoselectivities for benzene and cyclohexane SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID BOND ACTIVATION; TRANSIENT CYCLOPENTADIENYLCARBONYLRHODIUM; SATURATED-HYDROCARBONS; TRIHYDRIDE COMPLEXES; METHANE; INTERMEDIATE; ALKANES C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Bergman, RG (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 26 TC 46 Z9 46 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD APR 8 PY 1998 VL 120 IS 13 BP 3253 EP 3254 DI 10.1021/ja974323f PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZH106 UT WOS:000073072700035 ER PT J AU Lindholm, EM Bielicki, JK Curtiss, LK Rubin, EM Forte, TM AF Lindholm, EM Bielicki, JK Curtiss, LK Rubin, EM Forte, TM TI Deletion of amino acids Glu146 -> Arg160 in human apolipoprotein A-I (ApoA-I-Seattle) alters lecithin : cholesterol acyltransferase activity and recruitment of cell phospholipid SO BIOCHEMISTRY LA English DT Article ID HIGH-DENSITY-LIPOPROTEINS; LIPID-FREE; PLASMA; GENE; ACTIVATION; DEFICIENCY; MUTATION; DOMAINS; HDL; SPHINGOMYELIN AB Human apolipoprotein A-I (apoA-I) has an important role in the efflux of cholesterol from peripheral cells, the first step in reverse cholesterol transport. Deletion of amino acids Glu146-->Arg160 in apoA-I (apoA-I-Seattle) removes a large section of a lipid binding helix and is associated in vivo with an atherogenic lipoprotein profile characterized by a deficiency in high-density lipoproteins (HDL). In the present study, we asked whether apoA-I-Seattle had normal ability to recruit lipids from cells and to form nascent high-density lipoprotein (HDL) particles and whether the altered secondary structure affected lecithin:cholesterol acyltransferase (LCAT) activity. Wild-type apoA-I and apoA-I-Seattle expressed in transfected Chinese hamster ovary cells formed nascent HDL particles with similar density distribution and protein-to-lipid ratio. Phospholipid subclass distribution of apoA-I-Seattle nascent HDL demonstrated a significant increase in sphingomyelin and phosphatidylethanolamine compared to wild type. ApoA-I-Seattle nascent HDL had a unique size distribution compared to wild-type nascent HDL; large (9-20 nm) particles predominated while there were virtually no small (7.5 nm) particles. LCAT reactivity was impaired by apoA-I-Seattle nascent HDL where cholesterol esterification was only half that of wild-type complexes. The apoA-I-Seattle conformation on nascent HDL was studied with a panel of monoclonal antibodies (Mabs) specific for apoA-I. Mabs that recognize the putative LCAT activation site, residues 95-122, had normal reactivity. As expected, the Mabs that recognized residues 141-164 were unreactive because of the 146-160 deletion; in addition, there was low reactivity with a Mab that recognizes residues 220-242. The data suggest that apoA-I residues 146-160 and/or 220-242 partake in normal LCAT activation and that cooperative interactions between helices may be important for maximal cholesterol esterification. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol & Nucl Med, Life Sci Div MS 1 220, Berkeley, CA 94720 USA. Scripps Res Inst, Dept Immunol & Vasc Biol, La Jolla, CA 92037 USA. RP Forte, TM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol & Nucl Med, Life Sci Div MS 1 220, Berkeley, CA 94720 USA. RI Lindholm, Marie/B-8736-2015 OI Lindholm, Marie/0000-0003-4309-3203 FU NHLBI NIH HHS [HL 18574, HL 43825] NR 32 TC 28 Z9 29 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD APR 7 PY 1998 VL 37 IS 14 BP 4863 EP 4868 DI 10.1021/bi972888i PG 6 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA ZK042 UT WOS:000073279100021 PM 9538003 ER PT J AU Neelam, B Richter, A Chamberlin, SG Puddicombe, SM Wood, L Murray, MB Nandagopal, K Niyogi, SK Davies, DE AF Neelam, B Richter, A Chamberlin, SG Puddicombe, SM Wood, L Murray, MB Nandagopal, K Niyogi, SK Davies, DE TI Structure-function studies of ligand-induced epidermal growth factor receptor dimerization SO BIOCHEMISTRY LA English DT Article ID SECRETED PROTEIN ARGOS; EGF RECEPTOR; SIGNAL-TRANSDUCTION; FACTOR-ALPHA; BINDING; AMPHIREGULIN; ACTIVATION; CELLS; PHOSPHORYLATION; BETACELLULIN AB We present a novel 96-well assay which we have applied to a structure-function study of epidermal growth factor receptor dimerization. The basis of the assay lies in the increased probability of EGFRs being captured as dimers by a bivalent antibody when they are immobilized in the presence of a cognate ligand. Once immobilized, the antibody acts as a tether, retaining the receptor in its dimeric state with a resultant 5-7-fold increase in binding of a radiolabeled ligand probe. When the assay was applied to members of the EGF ligand family, murine EGF, transforming growth factor alpha, and heparin-binding EGF-like growth factor were comparable with human EGF (EC50 = 2nM); betacellulin, which has a broader receptor specificity, was slightly less effective. In contrast, amphiregulin (AR(1-84)), which has a truncated C-tail and lacks a conserved leucine residue, was ineffective unless used at >1 mu M. We further probed the involvement of the C-tail and the conserved leucine residue in receptor dimerization by comparing the activities of two genetically modified EGFs (the chimera mEGF/TGF alpha(44-50) and the EGF point mutant L47A) and a C-terminally extended form of AR (AR(1-90)) with those of two other unrelated EGF mutants (I23T and L15A). The potency of these ligands was in the order EGF > I23T > mEGF/TGF alpha(44-50) > L47A = L15A much greater than AR(1-90) > AR(1-84). Although AR was much worse than predicted from its affinity, this defect could be partially rectified by co-localization of the immobilizing antibody with heparin. Thus, it seems likely that AR cannot dimerize the EGFR unless other accessory molecules are present to stabilize its functional association with the EGFR. C1 Southampton Gen Hosp, CRC, Wessex Med Oncol Unit, Southampton SO16 6YD, Hants, England. Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. RP Davies, DE (reprint author), Southampton Gen Hosp, CRC, Wessex Med Oncol Unit, Tremona Rd, Southampton SO16 6YD, Hants, England. RI Davies, Donna/H-2993-2012 FU NCI NIH HHS [CA 09336] NR 40 TC 21 Z9 21 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD APR 7 PY 1998 VL 37 IS 14 BP 4884 EP 4891 DI 10.1021/bi972548x PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA ZK042 UT WOS:000073279100024 PM 9538006 ER PT J AU Peters, DW Power, MP Bourret, ED Arnold, J AF Peters, DW Power, MP Bourret, ED Arnold, J TI A Ga4N8 cage structure formed by reaction of trimethylgallium with phenylhydrazine SO CHEMICAL COMMUNICATIONS LA English DT Article ID GALLIUM NITRIDE; PRECURSOR AB Methane elimination during thermolysis of GaMe3 with PhHNNH2 yields sequentially dimeric [Me2Ga{mu-N(H)N(H)Ph}](2), tetrameric [MeGa{mu-N(H)NPh}](4) and, ultimately, GaN; the X-ray structure of the tetramer shows a novel Ga4N8 cage. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Arnold, J (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Arnold, John/F-3963-2012 OI Arnold, John/0000-0001-9671-227X NR 17 TC 36 Z9 36 U1 0 U2 0 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF, CAMBS, ENGLAND SN 1359-7345 J9 CHEM COMMUN JI Chem. Commun. PD APR 7 PY 1998 IS 7 BP 753 EP 754 DI 10.1039/a800266e PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZG813 UT WOS:000073042400011 ER PT J AU Moffitt, M Yu, YS Nguyen, D Graziano, V Schneider, DK Eisenberg, A AF Moffitt, M Yu, YS Nguyen, D Graziano, V Schneider, DK Eisenberg, A TI Coronal structure of star-like block ionomer micelles: An investigation by small-angle neutron scattering SO MACROMOLECULES LA English DT Article ID POLYMERS; COPOLYMERS; DYNAMICS; SYSTEMS; DILUTE AB The coronal structure of starlike block ionomer micelles has been probed directly by small-angle neutron scattering (SANS), using specific contrast labeling of different regions of the corona. Solutions of PS-b-dPS-b-PS-b-PACs starlike block ionomer micelles in toluene are studied; contrast is provided by perdeuterated polystyrene labels situated at different distances from the ionic core. For deuterated labels situated at 390 PS units from the core, the scattered intensity is found to scale as I similar to q(-1.7) at intermediate q, suggesting a semidilute environment for the labels and local swollen coil behavior. For labels 180 PS units from the core, steric perturbations are more extensive than those found under semidilute conditions, such that single chain scaling is not observed at any length scale; scattered intensity is found to scale as I similar to q(-1.3) at intermediate q. The stiffness of coronal chains next to the core is even greater, as indicated by I similar to q(-1.0) scaling for dPS labels attached directly to the ionic core; these probes exhibit rigid-rod behavior at length scales less than ca. 76 Angstrom. In Kratky representations of the three samples, a maximum characteristic of polymer stars becomes more pronounced as the distance of the dPS labels from the core decreases, indicating greater contributions from interchain scattering. Increases in chain stiffness and interchain scattering suggest a significant increase in local segment densities with decreasing distance from the ionic core. Interparticle scattering as a function of polymer concentration is also investigated. The position of the Bragg peak scales with concentration as c(1/3), suggesting liquid ordering of the solution. Radii of gyration determined from Guinier analysis agree well with light scattering results, with the exception of micelles in which dPS probes are attached directly to the core. In this case, the neutrons "see" only the inner part of the spherical brush, and R-g from SANS data is less than R-g for the whole micelle. C1 McGill Univ, Dept Chem, Montreal, PQ H3A 2K6, Canada. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Eisenberg, A (reprint author), McGill Univ, Dept Chem, 801 Sherbrooke St W, Montreal, PQ H3A 2K6, Canada. RI Eisenberg, Adi/B-8676-2008 NR 22 TC 26 Z9 28 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD APR 7 PY 1998 VL 31 IS 7 BP 2190 EP 2197 DI 10.1021/ma971646n PG 8 WC Polymer Science SC Polymer Science GA ZH163 UT WOS:000073079100023 ER PT J AU Jayachandran, KN Chatterji, PR Prausnitz, JM AF Jayachandran, KN Chatterji, PR Prausnitz, JM TI Vapor-liquid equilibria for solutions of brush poly(methyl methacrylate) in chloroform SO MACROMOLECULES LA English DT Article ID SOLVENT SYSTEMS; MIXED-SOLVENT; POLYMER C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Indian Inst Chem Technol, Div Organ Coatings & Polymers, Hyderabad 500007, Andhra Pradesh, India. RP Prausnitz, JM (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. NR 14 TC 4 Z9 4 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD APR 7 PY 1998 VL 31 IS 7 BP 2375 EP 2377 DI 10.1021/ma971023+ PG 3 WC Polymer Science SC Polymer Science GA ZH163 UT WOS:000073079100047 ER PT J AU Weinstein, MG Song, CY Stavola, M Pearton, SJ Wilson, RG Shul, RJ Killeen, KP Ludowise, MJ AF Weinstein, MG Song, CY Stavola, M Pearton, SJ Wilson, RG Shul, RJ Killeen, KP Ludowise, MJ TI Hydrogen-decorated lattice defects in proton implanted GaN SO APPLIED PHYSICS LETTERS LA English DT Article ID AS-H BONDS; COMPLEXES; INP; GAAS AB Several vibrational bands were observed near 3100 cm(-1) in GaN that had been implanted with hydrogen at room temperature and subsequently annealed, Our results indicate that these bands are due to nitrogen-dangling-bond defects created by the implantation that an decorated by hydrogen, The frequencies are close to those predicted recently for V-Ga-H-n complexes, leading us to tentatively assign the new lines to V-Ga defects decorated with different numbers of H atoms. (C) 1998 American Institute of Physics. [S0003-6951(98)03614-6]. C1 Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA. Univ Florida, Dept Mat Sci, Gainesville, FL 32611 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Hewlett Packard Labs, Palo Alto, CA 94304 USA. Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China. RP Stavola, M (reprint author), Lehigh Univ, Dept Phys, Bldg 16, Bethlehem, PA 18015 USA. RI Schaff, William/B-5839-2009 NR 27 TC 40 Z9 40 U1 2 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 6 PY 1998 VL 72 IS 14 BP 1703 EP 1705 DI 10.1063/1.121157 PG 3 WC Physics, Applied SC Physics GA ZG008 UT WOS:000072955400013 ER PT J AU McCluskey, MD Romano, LT Krusor, BS Bour, DP Johnson, NM Brennan, S AF McCluskey, MD Romano, LT Krusor, BS Bour, DP Johnson, NM Brennan, S TI Phase separation in InGaN/GaN multiple quantum wells SO APPLIED PHYSICS LETTERS LA English DT Article ID FILMS; GA1-XINXN; ALLOYS; GAN AB Evidence is presented for phase separation in In0.27Ga0.73N/CaN multiple quantum wells. After annealing for 40 h at a temperature of 950 degrees C, the absorption threshold at 2.95 eV is replaced by a broad peak at 2.65 eV, This peak is attributed to the formation of In-rich InGaN phases in the active region. X-ray diffraction measurements show a shift in the diffraction peaks toward GaN, consistent with the formation of an In-poor phase. A diffraction peak corresponding to an In-rich phase is also present in the annealed material. Nanoscale In-rich InGaN precipitates are observed by transmission electron microscopy and energy dispersive x-ray chemical analysis. (C) 1998 American Institute of Physics. [S0003-6951(98)00614-7]. C1 Xerox Corp, Palo Alto Res Ctr, Palo Alto, CA 94304 USA. Stanford Synchrotron Radiat Lab, Menlo Park, CA 94309 USA. RP McCluskey, MD (reprint author), Xerox Corp, Palo Alto Res Ctr, 3333 Coyote Hill Rd, Palo Alto, CA 94304 USA. NR 12 TC 169 Z9 171 U1 1 U2 15 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 6 PY 1998 VL 72 IS 14 BP 1730 EP 1732 DI 10.1063/1.121166 PG 3 WC Physics, Applied SC Physics GA ZG008 UT WOS:000072955400022 ER PT J AU Jia, QX Findikoglu, AT Arendt, P Foltyn, SR Roper, JM Groves, JR Coulter, JY Li, YQ Dionne, GF AF Jia, QX Findikoglu, AT Arendt, P Foltyn, SR Roper, JM Groves, JR Coulter, JY Li, YQ Dionne, GF TI Superconducting YBa2Cu3O7-x thin films on polycrystalline ferrite for magnetically tunable microwave components SO APPLIED PHYSICS LETTERS LA English DT Article ID TEXTURED BUFFER LAYERS AB Superconducting YBa2Cu2O7-x (YBCO) thin films with a surface resistance of 0.86 m Omega at 10 GHz and 76 K have been grown on polycrystalline ferrite yttrium iron garnet (YIG) substrates. The chemical and structural mismatches between YBCO and YIG are solved by using a double buffer layer of biaxially oriented yttria-stabilized zirconia (YSZ) and CeO2, when YSZ is deposited by an ion-beam-assisted-deposition technique. The YBCO films are c axis oriented with an in-plane mosaic spread [full width at half maximum of an x-ray phi-scan on (103) reflection] of less than 8 degrees. The films have a superconductive transition temperature above 88 K with a transition width less than 0.3 K, giving a critical current density above 10(6) A/cm(2) in self field at 75 K. At 75 K in an external magnetic field of 1 T perpendicular to the film surface, the films maintain a critical current density over 2 X 10(5) A/cm(2). (C) 1998 American Institute of Physics. [S0003-6951(98)02314-6]. C1 Univ Calif Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. NZ Appl Technol, Woburn, MA 01801 USA. MIT, Lincoln Lab, Lexington, MA 02173 USA. RP Jia, QX (reprint author), Univ Calif Los Alamos Natl Lab, Superconduct Technol Ctr, Mail Stop K763, Los Alamos, NM 87545 USA. RI Jia, Q. X./C-5194-2008 NR 12 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 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 6 PY 1998 VL 72 IS 14 BP 1763 EP 1765 DI 10.1063/1.121177 PG 3 WC Physics, Applied SC Physics GA ZG008 UT WOS:000072955400033 ER PT J AU Pestovsky, O Bakac, A Espenson, JH AF Pestovsky, O Bakac, A Espenson, JH TI One-electron transfer reactions of 10-methyl-9,10-dihydroacridine and the kinetic isotope effects for the intervening ionization and protonation of a carbon acid SO INORGANIC CHEMISTRY LA English DT Article ID NADH MODEL-COMPOUND; ENZYME-CATALYZED REACTIONS; HYDRIDE-TRANSFER-REACTIONS; NICOTINAMIDE ADENINE-DINUCLEOTIDE; PARA-BENZOQUINONE DERIVATIVES; CIS-DIALKYLCOBALT(III) COMPLEXES; ALCOHOL-DEHYDROGENASE; SECONDARY DEUTERIUM; TRANSITION-STATE; PERCHLORIC-ACID AB Oxidations of 10-methyl-9,10-dihydroacridine, AcrH(2), with transition-metal reagents that require single-electron processes were studied in acetonitrile/water, 20/80 by volume. The reaction proceeds in three stages: (1) electron transfer yielding ACrH(2)(.+), a very rapid step for Ce-aq(4+) and IrCl62- but rate-controlling for Fe-aq(3+) (k(298)/L mol(-1) s(-1) = 37.9 at mu = 0.1 M and 128 at mu = 1.0 M); (2) reversible and relatively slow ionization/protonation of AcrH(2)(.+)/AcrH(.); and (3) the final highly exoergic and diffusion-controlled oxidation of AcrH(.) to AcrH(+), the stable product. The second step corresponds to ionization/protonation at carbon. Four isotopically distinct versions of the reactions could be examined, AcrL(2) and L2O/L3O+ (L = H, D) in every combination. The primary, secondary, and solvent isotope effects on the rate constants in each direction are all appreciable, and they were resolved by the indicated experiments. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Bakac, A (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. NR 60 TC 12 Z9 12 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD APR 6 PY 1998 VL 37 IS 7 BP 1616 EP 1622 DI 10.1021/ic971244w PG 7 WC Chemistry, Inorganic & Nuclear SC Chemistry GA ZG944 UT WOS:000073055700031 ER PT J AU Walensky, LD Gascard, P Fields, ME Blackshaw, S Conboy, JG Mohandas, N Snyder, SH AF Walensky, LD Gascard, P Fields, ME Blackshaw, S Conboy, JG Mohandas, N Snyder, SH TI The 13-kD FK506 binding protein, FKBP13, interacts with a novel homologue of the erythrocyte membrane cytoskeletal protein 4.1 SO JOURNAL OF CELL BIOLOGY LA English DT Article ID CALCINEURIN PHOSPHATASE-ACTIVITY; ENDOPLASMIC-RETICULUM; GLYCOPHORIN-C; IMMUNOSUPPRESSANT FK506; FK506-BINDING PROTEIN; MOLECULAR-CLONING; CYCLOSPORINE-A; IMMUNOPHILIN; IDENTIFICATION; SPECTRIN AB We have identified a novel generally expressed homologue of the erythrocyte membrane cytoskeletal protein 4.1, named 4.1G, based on the interaction of its COOH-terminal domain (CTD) with the immunophilin FKBP13, The 129-amino acid peptide, designated 4.1G-CTD, is the first known physiologic binding target of FKBP13. FKBP13 is a 13-kD protein originally identified by its high affinity binding to the immunosuppressant drugs FK506 and rapamycin (Jin, Y., M.W. Albers, W.S. Lane, B.E. Bierer, and S.J. Burakoff, 1991. Proc. Natl. Acad. Sci, USA. 85:6677-6681); it is a membrane-associated protein thought to function as an ER chaperone (Bush, K.T., B.A. Henrickson, and S.K. Nigam. 1994. Biochem. J. [Tokyo]. 303:705-708). We report the specific association of FKBP13 with 4.1G-CTD based on yeast two-hybrid, in vitro binding and coimmunoprecipitation experiments. The histidyl-proline moiety of 4.1G-CTD is required for FKBP13 binding, as indicated by yeast experiments with truncated and mutated 4.1G-CTD constructs. In situ hybridization studies reveal cellular colocalizations for FKBP13 and 4.1G-CTD throughout the body during development, supporting a physiologic role for the interaction. Interestingly, FKBP13 cofractionates with the red blood cell homologue of 4.1 (4.1R) in ghosts, inside-out vesicles, and Triton shell preparations. The identification of FKBP13 in erythrocytes. which lack ER, suggests that FKBP13 may additionally function as a component of membrane cytoskeletal scaffolds. C1 Johns Hopkins Univ, Sch Med, Dept Neurosci, Baltimore, MD 21205 USA. Johns Hopkins Univ, Sch Med, Dept Pharmacol & Mol Sci, Baltimore, MD 21205 USA. Johns Hopkins Univ, Sch Med, Dept Psychiat & Behav Sci, Baltimore, MD 21205 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Snyder, SH (reprint author), Johns Hopkins Univ, Sch Med, Dept Neurosci, 813 WBSB,725 N Wolfe St, Baltimore, MD 21205 USA. FU NIDA NIH HHS [DA-00026, K05 DA000074, P50 DA000266]; NIDDK NIH HHS [P01 DK032094]; NIGMS NIH HHS [GM 07309, T32 GM007309]; NIMH NIH HHS [R01 MH018501, MH-18501, R37 MH018501] NR 57 TC 90 Z9 97 U1 0 U2 1 PU ROCKEFELLER UNIV PRESS PI NEW YORK PA 1114 FIRST AVE, 4TH FL, NEW YORK, NY 10021 USA SN 0021-9525 J9 J CELL BIOL JI J. Cell Biol. PD APR 6 PY 1998 VL 141 IS 1 BP 143 EP 153 DI 10.1083/jcb.141.1.143 PG 11 WC Cell Biology SC Cell Biology GA ZH467 UT WOS:000073113200012 PM 9531554 ER PT J AU Teppen, BJ Yu, CH Newton, SQ Miller, DM Schafer, L AF Teppen, BJ Yu, CH Newton, SQ Miller, DM Schafer, L TI Ab initio investigations pertaining to aluminum in tetrahedral versus octahedral sites of clay minerals SO JOURNAL OF MOLECULAR STRUCTURE LA English DT Review DE aluminium; clay minerals; silicon oxide ID DENSITY-FUNCTIONAL THEORY; MOLECULAR ELECTROSTATIC POTENTIALS; QUANTUM-CHEMICAL CALCULATIONS; CORRELATED WAVE-FUNCTIONS; INDUCED BREATHING MODEL; VALENCE FORCE-FIELD; BRONSTED ACID SITES; BASIS-SET; ZEOLITE CATALYSTS; FIRST-PRINCIPLES AB The structures and atomic charges of several aluminum and silicon-oxide systems-[Al(OH)(4)](-), Al(OH(3))(H(2)O)(3), Al(OH)(2)(H(2)O)(2)-(OH)(2)-Al(OH)(2)(H(2)O)(2), [Al(OH)(3)-O-Si(OH)(3)](-), and Al(OH)(2)(H(2)O)(3)-O-Si(OH)(3)- representing compounds with tetrahedral and octahedral coordination, were investigated by ab initio RHF and MP2 geometry refinements and by density functional calculations. In addition, structures and CHELPG charges were determined for the silicic acid dimer, [Si(OH)(4)](2), at equilibrium and at various displacements from the equilibrium intermolecular separation, in order to determine the effects of molecular association on partial atomic charges. The calculations were performed because the investigated compounds an fragments representative of phyllosilicate soil minerals such as smectite clays, and the results can be used to augment the database available for developing force field parameters for molecular dynamics simulations of adsorption phenomena at the clay mineral/aqueous solution interface. Furthermore, the results make it possible to discuss the effects of electron correlation on structures of this kind. (C) 1998 Elsevier Science B.V. C1 Univ Arkansas, Dept Agron, Fayetteville, AR 72701 USA. Univ Arkansas, Dept Chem, Fayetteville, AR 72701 USA. Savannah River Ecol Lab, Adv Analyt Ctr Environm Sci, Aiken, SC 29802 USA. RP Schafer, L (reprint author), Univ Arkansas, Dept Agron, Fayetteville, AR 72701 USA. NR 103 TC 16 Z9 17 U1 0 U2 15 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 APR 6 PY 1998 VL 445 IS 1-3 BP 65 EP 88 DI 10.1016/S0022-2860(97)00414-6 PG 24 WC Chemistry, Physical SC Chemistry GA ZL404 UT WOS:000073429500011 ER PT J AU Kachru, S Lawrence, A Silverstein, E AF Kachru, S Lawrence, A Silverstein, E TI Matrix description of Calabi-Yau compactifications SO PHYSICAL REVIEW LETTERS LA English DT Article ID DISTANCES; MANIFOLDS AB We point out that the matrix description of M theory compactified on Calabi-Yau threefolds is in many respects simpler than the matrix description of a T-6 compactification. This is largely because of the differences between D6-branes wrapped on Calabi-Yau threefolds and D6-branes wrapped on six-tori. In particular, if we define the matrix theory following the prescription on Sen and Seiberg, we find that the remaining degrees of freedom are decoupled from gravity. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. Harvard Univ, Dept Phys, Cambridge, MA 02138 USA. Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Kachru, S (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 39 TC 14 Z9 14 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 6 PY 1998 VL 80 IS 14 BP 2996 EP 2999 DI 10.1103/PhysRevLett.80.2996 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG049 UT WOS:000072960500008 ER PT J AU Abbott, B Abolins, M Acharya, BS Adam, I Adams, DL Adams, M Ahn, S Aihara, H Alves, GA Amos, N Anderson, EW Astur, R Baarmand, MM Baden, A Balamurali, V Balderston, J Baldin, B Banerjee, S Bantly, J Barberis, E Bartlett, JF Bazizi, K Belyaev, A Beri, SB Bertram, I Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Biswas, N Blazey, G Blessing, S Bloom, P Boehnlein, A Bojko, NI Borcherding, F Boswell, C Brandt, A Brock, R Bross, A Buchholz, D Burtovoi, VS Butler, JM Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chang, SM Chekulaev, SV Chen, LP Chen, W Choi, S Chopra, S Choudhary, BC Christenson, JH Chung, M Claes, D Clark, AR Cobau, WG Cochran, J Coney, L Cooper, WE Cretsinger, C Cullen-Vidal, D Cummings, MAC Cutts, D Dahl, OI Davis, K De, K Del Signore, K Demarteau, M Denisov, D Denisov, SP Diehl, HT Diesburg, M Di Loreto, G Draper, P Ducros, Y Dudko, LV Dugad, SR Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Evdokimov, VN Fahland, T Fatyga, MK Feher, S Fein, D Ferbel, T Finocchiaro, G Fisk, HE Fisyak, Y Flattum, E Forden, GE Fortner, M Frame, KC Fuess, S Gallas, E Galyaev, AN Gartung, P Geld, TL Genik, RJ Genser, K Gerber, CE Gibbard, B Glenn, S Gobbi, B Goldschmidt, A Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Grannis, PD Green, DR Greenlee, H Grim, G Grinstein, S Grossman, N Grudberg, P Grunendahl, S Guglielmo, G Guida, JA Guida, JM Gupta, A Gurzhiev, SN Gutierrez, P Gutnikov, YE Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hahn, KS Hall, RE Hanlet, P Hansen, S Hauptman, JM Hedin, D Heinson, AP Heintz, U Hernandez-Montoya, R Heuring, T Hirosky, R Hobbs, JD Hoeneisen, B Hoftun, JS Hsieh, F Hu, T Hu, T Huehn, T Ito, AS James, E Jaques, J Jerger, SA Jesik, R Jiang, JZY Joffe-Minor, T Johns, K Johnson, M Jonckheere, A Jones, M Jostlein, H Jun, SY Jung, CK Kahn, S Kalbfleisch, G Kang, JS Karmanov, D Karmgard, D Kehoe, R Kelly, ML Kim, CL Kim, SK Klatchko, A Klima, B Klopfenstein, C Klyukhin, VI Kochetkov, VI Kohli, JM Koltick, D Kostritskiy, AV Kotcher, J Kotwal, AV Kourlas, J Kozelov, AV Kozlovski, EA Krane, J Krishnaswamy, MR Krzywdzinski, S Kunori, S Lami, S Lander, R Landry, F Landsberg, G Lauer, B Leflat, A Li, H Li, J Li-Demarteau, QZ Lima, JGR Lincoln, D Linn, SL Linnenmann, J Lipton, R Liu, YC Lobkowicz, F Loken, SC Lokos, S Lueking, L Lyon, AL Maciel, AKA Madaras, RJ Madden, R Magana-Mendoza, L Manankov, V Mani, S Mao, HS Markeloff, R Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McDonald, J McKibben, T McKinley, J McMahon, T Melanson, HL Merkin, M Merritt, KW Miettinen, H Mincer, A Mishra, CS Mokhov, N Mondal, NK Montgomery, HE Mooney, P da Motta, H Murphy, C Nang, F Narain, M Narasimham, VS Narayanan, A Neal, HA Negret, JP Nemethy, P Norman, D Oesch, L Oguri, V Oliveira, E Oltman, E Oshima, N Owen, D Padley, P Para, A Park, YM Partridge, R Parua, N Paterno, M Pawlik, B Perkins, J Peters, M Piegaia, R Piekarz, H Pischalnikov, Y Podstavkov, VM Pope, BG Prosper, HB Protopopescu, S Qian, J Quintas, PZ Raja, R Rajagopalan, S Ramirez, O Rasmussen, L Reucroft, S Rijssenbeek, M Rockwell, T Roco, M Roe, NA Rubinov, P Ruchti, R Rutherfoord, J Sanchez-Hernandez, A Santoro, A Sawyer, L Schamberger, RD Schellman, H Sculli, J Shabalina, E Shaffer, C Shankar, HC Shivpuri, RK Shupe, M Singh, H Singh, JB Sirotenko, V Smart, W Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Sood, PM Sosebee, M Sotnikova, N Souza, M Spadafora, AL Steinbruck, G Stephens, RW Stevenson, ML Stewart, D Stichelbaut, F Stoianova, DA Stoker, D Strauss, M Streets, K Strovink, M Sznajder, A Tamburello, P Tarazi, J Tartaglia, M Thomas, TLT Thompson, J Trippe, TG Tuts, PM Varelas, N Varnes, EW Vititoe, D Volkov, AA Vorobiev, AP Wahl, HD Wang, G Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Wightman, JA Willis, S Wimpenny, SJ Wirjawan, JVD Womersley, J Won, E Wood, DR Xu, H Yamanda, R Yamin, P Yang, J Yasuda, T Yepes, P Yoshikawa, C Youssef, S Yu, J Yu, Y Zhu, ZH Zieminska, D Zieminski, A Zverev, EG Zylberstejn, A AF Abbott, B Abolins, M Acharya, BS Adam, I Adams, DL Adams, M Ahn, S Aihara, H Alves, GA Amos, N Anderson, EW Astur, R Baarmand, MM Baden, A Balamurali, V Balderston, J Baldin, B Banerjee, S Bantly, J Barberis, E Bartlett, JF Bazizi, K Belyaev, A Beri, SB Bertram, I Bezzubov, VA Bhat, PC Bhatnagar, V Bhattacharjee, M Biswas, N Blazey, G Blessing, S Bloom, P Boehnlein, A Bojko, NI Borcherding, F Boswell, C Brandt, A Brock, R Bross, A Buchholz, D Burtovoi, VS Butler, JM Carvalho, W Casey, D Casilum, Z Castilla-Valdez, H Chakraborty, D Chang, SM Chekulaev, SV Chen, LP Chen, W Choi, S Chopra, S Choudhary, BC Christenson, JH Chung, M Claes, D Clark, AR Cobau, WG Cochran, J Coney, L Cooper, WE Cretsinger, C Cullen-Vidal, D Cummings, MAC Cutts, D Dahl, OI Davis, K De, K Del Signore, K Demarteau, M Denisov, D Denisov, SP Diehl, HT Diesburg, M Di Loreto, G Draper, P Ducros, Y Dudko, LV Dugad, SR Edmunds, D Ellison, J Elvira, VD Engelmann, R Eno, S Eppley, G Ermolov, P Eroshin, OV Evdokimov, VN Fahland, T Fatyga, MK Feher, S Fein, D Ferbel, T Finocchiaro, G Fisk, HE Fisyak, Y Flattum, E Forden, GE Fortner, M Frame, KC Fuess, S Gallas, E Galyaev, AN Gartung, P Geld, TL Genik, RJ Genser, K Gerber, CE Gibbard, B Glenn, S Gobbi, B Goldschmidt, A Gomez, B Gomez, G Goncharov, PI Solis, JLG Gordon, H Goss, LT Gounder, K Goussiou, A Graf, N Grannis, PD Green, DR Greenlee, H Grim, G Grinstein, S Grossman, N Grudberg, P Grunendahl, S Guglielmo, G Guida, JA Guida, JM Gupta, A Gurzhiev, SN Gutierrez, P Gutnikov, YE Hadley, NJ Haggerty, H Hagopian, S Hagopian, V Hahn, KS Hall, RE Hanlet, P Hansen, S Hauptman, JM Hedin, D Heinson, AP Heintz, U Hernandez-Montoya, R Heuring, T Hirosky, R Hobbs, JD Hoeneisen, B Hoftun, JS Hsieh, F Hu, T Hu, T Huehn, T Ito, AS James, E Jaques, J Jerger, SA Jesik, R Jiang, JZY Joffe-Minor, T Johns, K Johnson, M Jonckheere, A Jones, M Jostlein, H Jun, SY Jung, CK Kahn, S Kalbfleisch, G Kang, JS Karmanov, D Karmgard, D Kehoe, R Kelly, ML Kim, CL Kim, SK Klatchko, A Klima, B Klopfenstein, C Klyukhin, VI Kochetkov, VI Kohli, JM Koltick, D Kostritskiy, AV Kotcher, J Kotwal, AV Kourlas, J Kozelov, AV Kozlovski, EA Krane, J Krishnaswamy, MR Krzywdzinski, S Kunori, S Lami, S Lander, R Landry, F Landsberg, G Lauer, B Leflat, A Li, H Li, J Li-Demarteau, QZ Lima, JGR Lincoln, D Linn, SL Linnenmann, J Lipton, R Liu, YC Lobkowicz, F Loken, SC Lokos, S Lueking, L Lyon, AL Maciel, AKA Madaras, RJ Madden, R Magana-Mendoza, L Manankov, V Mani, S Mao, HS Markeloff, R Marshall, T Martin, MI Mauritz, KM May, B Mayorov, AA McCarthy, R McDonald, J McKibben, T McKinley, J McMahon, T Melanson, HL Merkin, M Merritt, KW Miettinen, H Mincer, A Mishra, CS Mokhov, N Mondal, NK Montgomery, HE Mooney, P da Motta, H Murphy, C Nang, F Narain, M Narasimham, VS Narayanan, A Neal, HA Negret, JP Nemethy, P Norman, D Oesch, L Oguri, V Oliveira, E Oltman, E Oshima, N Owen, D Padley, P Para, A Park, YM Partridge, R Parua, N Paterno, M Pawlik, B Perkins, J Peters, M Piegaia, R Piekarz, H Pischalnikov, Y Podstavkov, VM Pope, BG Prosper, HB Protopopescu, S Qian, J Quintas, PZ Raja, R Rajagopalan, S Ramirez, O Rasmussen, L Reucroft, S Rijssenbeek, M Rockwell, T Roco, M Roe, NA Rubinov, P Ruchti, R Rutherfoord, J Sanchez-Hernandez, A Santoro, A Sawyer, L Schamberger, RD Schellman, H Sculli, J Shabalina, E Shaffer, C Shankar, HC Shivpuri, RK Shupe, M Singh, H Singh, JB Sirotenko, V Smart, W Smith, E Smith, RP Snihur, R Snow, GR Snow, J Snyder, S Solomon, J Sood, PM Sosebee, M Sotnikova, N Souza, M Spadafora, AL Steinbruck, G Stephens, RW Stevenson, ML Stewart, D Stichelbaut, F Stoianova, DA Stoker, D Strauss, M Streets, K Strovink, M Sznajder, A Tamburello, P Tarazi, J Tartaglia, M Thomas, TLT Thompson, J Trippe, TG Tuts, PM Varelas, N Varnes, EW Vititoe, D Volkov, AA Vorobiev, AP Wahl, HD Wang, G Warchol, J Watts, G Wayne, M Weerts, H White, A White, JT Wightman, JA Willis, S Wimpenny, SJ Wirjawan, JVD Womersley, J Won, E Wood, DR Xu, H Yamanda, R Yamin, P Yang, J Yasuda, T Yepes, P Yoshikawa, C Youssef, S Yu, J Yu, Y Zhu, ZH Zieminska, D Zieminski, A Zverev, EG Zylberstejn, A CA DO Collaboration TI A measurement of the W boson mass at the Fermilab p(p)over-bar collider SO PHYSICAL REVIEW LETTERS LA English DT Article ID CTEQ PARTON DISTRIBUTIONS; RADIATIVE-CORRECTIONS; DECAY AB We report a measurement of the W boson mass based on an integrated luminosity of 82 pb(-1) from collisions at root s = 1.8 TeV recorded in 1994-1995 by the DO detector at the Fermilab We identify W bosons by their decays to ev and extract the mass by fitting the transverse mass spectrum from 28 323 W boson candidates. A sample of 3563 dielectron events, mostly due to Z --> ee decays, constrains models of W boson production and the detector. We measure M-W = 80.44 +/- 0.10(stat) +/- 0.07(syst) GeV. By combining this measurement with our result form the 1992-1993 data set, we obtain M-W = 80.43 +/- 0.11 GeV. C1 NYU, New York, NY 10003 USA. Univ Los Andes, Bogota, Colombia. Univ Arizona, Tucson, AZ 85721 USA. Boston Univ, Boston, MA 02215 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Brown Univ, Providence, RI 02912 USA. Univ Buenos Aires, Buenos Aires, DF, Argentina. Univ Calif Davis, Livermore, CA 95616 USA. Univ Calif Irvine, Irvine, CA 92697 USA. Univ Calif Riverside, Riverside, CA 92521 USA. Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil. CINVESTAV, Mexico City 14000, DF, Mexico. Columbia Univ, New York, NY 10027 USA. Univ Delhi, Delhi 110007, India. Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Florida State Univ, Tallahassee, FL 32306 USA. Univ Hawaii, Honolulu, HI 96822 USA. Univ Illinois, Chicago, IL 60607 USA. Indiana Univ, Bloomington, IN 47405 USA. Iowa State Univ, Ames, IA 50011 USA. Korea Univ, Seoul 136701, South Korea. Kyungsung Univ, Pusan 608736, South Korea. Inst Nucl Phys, Krakow, Poland. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Louisiana Tech Univ, Ruston, LA 71272 USA. Univ Maryland, College Pk, MD 20742 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Michigan State Univ, E Lansing, MI 48824 USA. Moscow State Univ, Moscow, Russia. Univ Nebraska, Lincoln, NE 68588 USA. Northeastern Univ, Boston, MA 02115 USA. No Illinois Univ, De Kalb, IL 60115 USA. Northwestern Univ, Evanston, IL 60208 USA. Univ Notre Dame, Notre Dame, IN 46556 USA. Univ Oklahoma, Norman, OK 73019 USA. Panjab Univ, Chandigarh 160014, India. Protvino High Energy Phys Inst, Protvino 142284, Russia. Purdue Univ, W Lafayette, IN 47907 USA. Rice Univ, Houston, TX 77005 USA. Univ do Estado do Rio de Janeiro, Rio De Janeiro, Brazil. Univ Rochester, Rochester, NY 14627 USA. CE Saclay, Serv Phys Particules, DAPNIA, CEA, Gif Sur Yvette, France. Seoul Natl Univ, Seoul, South Korea. SUNY Stony Brook, Stony Brook, NY 11794 USA. Tata Inst Fundamental Res, Mumbai 400005, India. Univ Texas, Arlington, TX 76019 USA. Texas A&M Univ, College Stn, TX 77843 USA. RP Abbott, B (reprint author), NYU, New York, NY 10003 USA. RI Chekulaev, Sergey/O-1145-2015; Oguri, Vitor/B-5403-2013; Alves, Gilvan/C-4007-2013; Aihara, Hiroaki/F-3854-2010; Kim, Sun Kee/G-2042-2015; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Roe, Natalie/A-8798-2012; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Merkin, Mikhail/D-6809-2012; Klyukhin, Vyacheslav/D-6850-2012; De, Kaushik/N-1953-2013 OI Aihara, Hiroaki/0000-0002-1907-5964; Kim, Sun Kee/0000-0002-0013-0775; Dudko, Lev/0000-0002-4462-3192; Klyukhin, Vyacheslav/0000-0002-8577-6531; De, Kaushik/0000-0002-5647-4489 NR 37 TC 42 Z9 42 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 APR 6 PY 1998 VL 80 IS 14 BP 3008 EP 3013 DI 10.1103/PhysRevLett.80.3008 PG 6 WC Physics, Multidisciplinary SC Physics GA ZG049 UT WOS:000072960500011 ER PT J AU Rudolph, D Baktash, C Dobaczewski, J Nazarewicz, W Satula, W Brinkman, MJ Devlin, M Jin, HQ LaFosse, DR Riedinger, LL Sarantites, DG Yu, CH AF Rudolph, D Baktash, C Dobaczewski, J Nazarewicz, W Satula, W Brinkman, MJ Devlin, M Jin, HQ LaFosse, DR Riedinger, LL Sarantites, DG Yu, CH TI Prompt proton decay of a well-deformed rotational band in Cu-58 SO PHYSICAL REVIEW LETTERS LA English DT Article ID DRIP-LINE; NUCLEI AB An excited well-deformed rotational band has been observed in the N = Z odd-odd nucleus Cu-58. The first excited state in this band decays via gamma emission to the spherical states associated with the first minimum in the potential, thus providing for its unambiguous assignment to Cu-58. I, contrast, its bandhead decays via emission of a prompt 2.4(1) MeV proton to an excited state in the daughter nucleus Ni-57. This is the first observation of proton decay from states associated with a deformed secondary minimum in the potential. Self-consistent Hartree-Fock calculations reproduce well both the large collectivity of this band and the general trend of its moment of inertia. C1 Ludwigs Maximillian Univ, Sekt Phys, D-85748 Garching, Germany. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Washington Univ, Dept Chem, St Louis, MO 63130 USA. RP Rudolph, D (reprint author), Ludwigs Maximillian Univ, Sekt Phys, D-85748 Garching, Germany. RI Rudolph, Dirk/D-4259-2009; Devlin, Matthew/B-5089-2013 OI Rudolph, Dirk/0000-0003-1199-3055; Devlin, Matthew/0000-0002-6948-2154 NR 29 TC 111 Z9 111 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 6 PY 1998 VL 80 IS 14 BP 3018 EP 3021 DI 10.1103/PhysRevLett.80.3018 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG049 UT WOS:000072960500013 ER PT J AU Beiersdorfer, P Osterheld, AL Scofield, JH Lopez-Urrutia, JRC Widmann, K AF Beiersdorfer, P Osterheld, AL Scofield, JH Lopez-Urrutia, JRC Widmann, K TI Measurement of QED and hyperfine splitting in the 2s(1/2)-2(p3/2) X-ray transition in Li-like Bi-209(80+) SO PHYSICAL REVIEW LETTERS LA English DT Article ID CONFIGURATION-INTERACTION CALCULATIONS; VACUUM-POLARIZATION CONTRIBUTION; LITHIUM-LIKE IONS; STATE LAMB SHIFT; HELIUM-LIKE IONS; GROUND-STATE; CU-LIKE; ISOELECTRONIC SEQUENCE; 2S(1/2)-2P(3/2) LEVELS; PRECISION-MEASUREMENT AB A measurement of the 2s(1/2)-2p(3/2) x-ray transition in trapped Li-like Bi80+ ions was made that resolved the 0.820 +/- 0.026 eV hyperfine splitting of the (1s(2)2S)(F=4,5) ground configuration, providing the first such measurement in a multielectron highly charged ion. The intensity ratio of the two components is shown to be a new electron density diagnostic. The statistically averaged 2788.139 +/- 0.039 eV energy of the 2s(1/2)-2p(3/2) transition provides the most accurate test of QED in a high-Z ion to date, demonstrating the need for including higher-order terms in the Lamb shift calculations. C1 Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Space Technol, Livermore, CA 94551 USA. RP Beiersdorfer, P (reprint author), Univ Calif Lawrence Livermore Natl Lab, Dept Phys & Space Technol, Livermore, CA 94551 USA. RI Crespo Lopez-Urrutia, Jose R./F-7069-2011 OI Crespo Lopez-Urrutia, Jose R./0000-0002-2937-8037 NR 43 TC 128 Z9 128 U1 2 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 APR 6 PY 1998 VL 80 IS 14 BP 3022 EP 3025 DI 10.1103/PhysRevLett.80.3022 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG049 UT WOS:000072960500014 ER PT J AU Blanford, G Christian, DC Gollwitzer, K Mandelkern, M Munger, CT Schultz, J Zioulas, G AF Blanford, G Christian, DC Gollwitzer, K Mandelkern, M Munger, CT Schultz, J Zioulas, G TI Observation of atomic antihydrogen SO PHYSICAL REVIEW LETTERS LA English DT Article AB We report the background-free observation of atomic antihydrogen, produced by interactions of an antiproton beam with a hydrogen gas jet target in the Fermilab Antiproton Accumulator. We measure the cross section of the reaction <(p)over bar p> --> <(H) over bar e(-) p for (p) over bar beam momenta between 5203 and 6232 MeV/c to be 1.12 +/- 0.14 +/- 0.09 pb. C1 Univ Calif Irvine, Irvine, CA 92697 USA. Fermi Natl Accelerator Lab, Batavia, IL 60510 USA. Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Blanford, G (reprint author), Univ Calif Irvine, Irvine, CA 92697 USA. NR 15 TC 116 Z9 116 U1 2 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 APR 6 PY 1998 VL 80 IS 14 BP 3037 EP 3040 DI 10.1103/PhysRevLett.80.3037 PG 4 WC Physics, Multidisciplinary SC Physics GA ZG049 UT WOS:000072960500018 ER PT J AU Ogut, S Chelikowsky, JR Louie, SG AF Ogut, S Chelikowsky, JR Louie, SG TI Density-relaxation part of the self-energy - Reply SO PHYSICAL REVIEW LETTERS LA English DT Article C1 Univ Minnesota, Dept Chem Engn & Mat Sci, Minnesota Supercomp Inst, Minneapolis, MN 55455 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Ogut, S (reprint author), Univ Minnesota, Dept Chem Engn & Mat Sci, Minnesota Supercomp Inst, 421 Washington Ave SE, Minneapolis, MN 55455 USA. RI Ogut, Serdar/B-1749-2012 NR 3 TC 24 Z9 24 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 APR 6 PY 1998 VL 80 IS 14 BP 3162 EP 3162 DI 10.1103/PhysRevLett.80.3162 PG 1 WC Physics, Multidisciplinary SC Physics GA ZG049 UT WOS:000072960500053 ER PT J AU Hilgenfeldt, S Lohse, D Moss, WC AF Hilgenfeldt, S Lohse, D Moss, WC TI Water temperature dependence of single bubble sonoluminescence (vol 80, pg 1332, 1998) SO PHYSICAL REVIEW LETTERS LA English DT Correction C1 Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Hilgenfeldt, S (reprint author), Univ Marburg, Fachbereich Phys, Renthof 6, D-35032 Marburg, Germany. RI Hilgenfeldt, Sascha/B-7356-2009; Lohse, Detlef/B-4915-2013; Hilgenfeldt, Sascha/A-4593-2014 OI Lohse, Detlef/0000-0003-4138-2255; Hilgenfeldt, Sascha/0000-0002-6799-2118 NR 1 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 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD APR 6 PY 1998 VL 80 IS 14 BP 3164 EP 3164 DI 10.1103/PhysRevLett.80.3164 PG 1 WC Physics, Multidisciplinary SC Physics GA ZG049 UT WOS:000072960500055 ER PT J AU Miranda, PB Du, Q Shen, YR AF Miranda, PB Du, Q Shen, YR TI Interaction of water with a fatty acid Langmuir film SO CHEMICAL PHYSICS LETTERS LA English DT Article ID X-RAY-DIFFRACTION; FREQUENCY VIBRATIONAL SPECTROSCOPY; MOLECULAR-DYNAMICS; SURFACTANT MONOLAYER; INTERFACE; REFLECTION; GENERATION; SIMULATION; ALCOHOLS; CHAIN AB Using sum-frequency vibrational spectroscopy we have studied the structure of the fatty acid monolayer-water interface as a function of pH of water. At low pH values, the monolayer is neutral and the surface water structure is disordered by hydrogen bonding of water molecules with the acid head-groups. At high pH values, acid head-groups are ionized and the resulting surface field helps the surface water molecules form a more ordered hydrogen-bonding network. At pH similar to 3, a small change in pH leads to a reorientation of the acid OH groups while the alkyl chains remain conformationally ordered at all pH values. Published by Elsevier Science B.V. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Miranda, PB (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Miranda, Paulo/C-5933-2012 OI Miranda, Paulo/0000-0002-2890-0268 NR 34 TC 101 Z9 101 U1 3 U2 34 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD APR 3 PY 1998 VL 286 IS 1-2 BP 1 EP 8 DI 10.1016/S0009-2614(97)01476-0 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA ZJ582 UT WOS:000073231200001 ER PT J AU Beardmore, KM Kress, JD Gronbech-Jensen, N Bishop, AR AF Beardmore, KM Kress, JD Gronbech-Jensen, N Bishop, AR TI Determination of the headgroup-gold(111) potential surface for alkanethiol self-assembled monolayers by ab initio calculation SO CHEMICAL PHYSICS LETTERS LA English DT Article ID AU(111); MODEL AB We present a realistic empirical potential function to model the head-group interaction for self-assembled monolayers (SAMs) of alkanethiols on Au(111). The potential function is fit to data obtained by ab initio geometry optimization of SCH3 on Au(111) clusters. The principal result from our calculations is that barriers within the surface corrugation potential ale too small to pin S atoms at any particular site. We note that simulations of alkanethiol/gold systems that employ a model precluding lateral movement of S cannot reproduce all dynamical behavior of the SAM. (C) 1998 Elsevier Science B.V. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. RP Beardmore, KM (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 19 TC 96 Z9 97 U1 0 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 EI 1873-4448 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD APR 3 PY 1998 VL 286 IS 1-2 BP 40 EP 45 DI 10.1016/S0009-2614(97)01361-4 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA ZJ582 UT WOS:000073231200007 ER PT J AU Lahtinen, J Somorjai, GA AF Lahtinen, J Somorjai, GA TI The effects of promoters in carbon monoxide hydrogenation on cobalt foil model catalysts SO JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL LA English DT Article ID FISCHER-TROPSCH REACTION; POLYCRYSTALLINE COBALT; CO HYDROGENATION; SURFACE-ANALYSIS; POTASSIUM; CO(0001); ADSORPTION; REDUCTION; SCIENCE; GROWTH AB Carbon monoxide hydrogenation has been studied on polycrystalline cobalt foils, using a combination of UHV studies and atmospheric pressure reactions at 525 and 575 K and the effects of different promoters (K and Mg) have been investigated. The selectivity towards methane was decreased due to both promoters. The main effect with potassium was,however, the suppression of carbon deposition at higher reaction temperatures. (C) 1998 Elsevier Science B.V. C1 Univ Calif Berkeley, Div Sci Mat, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Lahtinen, J (reprint author), Univ Helsinki, Phys Lab, POB 1100, Helsinki 02015, Finland. RI Lahtinen, Jouko/K-6804-2012 OI Lahtinen, Jouko/0000-0002-1192-9945 NR 26 TC 17 Z9 17 U1 1 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1381-1169 J9 J MOL CATAL A-CHEM JI J. Mol. Catal. A-Chem. PD APR 3 PY 1998 VL 130 IS 3 BP 255 EP 260 DI 10.1016/S1381-1169(97)00216-1 PG 6 WC Chemistry, Physical SC Chemistry GA ZN396 UT WOS:000073641700008 ER PT J AU Bunge, HP Richards, MA Lithgow-Bertelloni, C Baumgardner, JR Grand, SP Romanowicz, BA AF Bunge, HP Richards, MA Lithgow-Bertelloni, C Baumgardner, JR Grand, SP Romanowicz, BA TI Time scales and heterogeneous structure in geodynamic earth models SO SCIENCE LA English DT Article ID MANTLE CONVECTION; DYNAMIC EARTH; SUBDUCTION; VISCOSITY; VELOCITY; DEPTH AB Computer models of mantle convection constrained by the history of Cenozoic and Mesozoic plate motions explain some deep-mantle structural heterogeneity imaged by seismic tomography, especially those related to subduction. They also reveal a 150-million-year time scale for generating thermal heterogeneity in the mantle, comparable to the record of plate motion reconstructions, so that the problem of unknown initial conditions can be overcome. The pattern of lowermost mantle structure at the core-mantle boundary is controlled by subduction history, although seismic tomography reveals intense large-scale hot (low-velocity) upwelling features not explicitly predicted by the models. C1 Inst Phys Globe, Sismol Lab, F-75252 Paris 05, France. Univ Calif Berkeley, Dept Geol & Geophys, Berkeley, CA 94720 USA. Univ Michigan, Dept Geol Sci, Ann Arbor, MI 48109 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA. Univ Texas, Dept Geol Sci, Austin, TX 78713 USA. Univ Calif Berkeley, Berkeley Seismol Lab, Berkeley, CA 94720 USA. RP Bunge, HP (reprint author), Inst Phys Globe, Sismol Lab, 4 Pl Jussieu, F-75252 Paris 05, France. EM bunge@ipgp.jussieu.ir RI Grand, Stephen/B-4238-2011; Lithgow-Bertelloni, Carolina/C-4827-2011; OI Lithgow-Bertelloni, Carolina/0000-0003-0924-6587; romanowicz, Barbara/0000-0002-6208-6044 NR 30 TC 132 Z9 133 U1 1 U2 10 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD APR 3 PY 1998 VL 280 IS 5360 BP 91 EP 95 DI 10.1126/science.280.5360.91 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA ZF314 UT WOS:000072885100041 ER PT J AU Zhu, YT Valdez, JA Shi, N Lovato, ML Stout, MG Zhou, SJ Butt, DP Blumenthal, WR Lowe, TC AF Zhu, YT Valdez, JA Shi, N Lovato, ML Stout, MG Zhou, SJ Butt, DP Blumenthal, WR Lowe, TC TI A composite reinforced with bone-shaped short fibers SO SCRIPTA MATERIALIA LA English DT Article C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM 87545 USA. RP Zhu, YT (reprint author), Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, MS G755, Los Alamos, NM 87545 USA. RI Zhu, Yuntian/B-3021-2008; Butt, Darryl/B-7480-2008 OI Zhu, Yuntian/0000-0002-5961-7422; Butt, Darryl/0000-0003-4501-8864 NR 9 TC 16 Z9 22 U1 1 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD APR 3 PY 1998 VL 38 IS 9 BP 1321 EP 1325 DI 10.1016/S1359-6462(98)00063-3 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA ZJ947 UT WOS:000073269700001 ER PT J AU Hsiung, LM Lassila, DH AF Hsiung, LM Lassila, DH TI Shock-induced omega phase in tantalum SO SCRIPTA MATERIALIA LA English DT Article C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Hsiung, LM (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-370, Livermore, CA 94551 USA. NR 11 TC 23 Z9 23 U1 1 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6462 J9 SCRIPTA MATER JI Scr. Mater. PD APR 3 PY 1998 VL 38 IS 9 BP 1371 EP 1376 DI 10.1016/S1359-6462(98)00049-9 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA ZJ947 UT WOS:000073269700009 ER PT J AU Abraham, DP McDeavitt, SM AF Abraham, DP McDeavitt, SM TI Influence of zirconium content on fission product distributions in stainless steel zirconium waste forms. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 078-IEC BP U677 EP U677 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402158 ER PT J AU Agamalian, MM Alamo, RG Londono, JD Mandelkern, L Stehling, FC Wignall, GD AF Agamalian, MM Alamo, RG Londono, JD Mandelkern, L Stehling, FC Wignall, GD TI Phase behavior of blends of linear and branched polyethylenes via small- and ultra-small angle neutron scattering. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. Florida Agr & Mech Univ, Tallahassee, FL USA. Florida State Univ, Coll Engn, Dept Chem Engn, Tallahassee, FL 32306 USA. Florida State Univ, Inst Mol Biophys, Tallahassee, FL 32306 USA. Exxon Chem Co, Div Plast Technol, Baytown, TX 77522 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 052-PMSE BP U295 EP U295 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500953 ER PT J AU Agnew, SF Corbin, RA AF Agnew, SF Corbin, RA TI Raman scattering, infrared absorption, and relative humidity of mono- and trisodium aluminate. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Purdue Univ, Lafayette, IN USA. Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 129-IEC BP U690 EP U690 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402206 ER PT J AU Ahmed, M Peterka, DS Suits, AG AF Ahmed, M Peterka, DS Suits, AG TI Velocity MAP imaging of the O(1D)+D2 -> OD+D reaction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Ernesto Orlando Lawrence Berkeley Natl Lab, Div Chem Sci, Chem Dynam Grp MS 10 118, Berkeley, CA 94720 USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 070-PHYS BP U164 EP U164 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500547 ER PT J AU Alamo, RG Kim, MH Mandelkern, L Galante, MJ Wignall, GD Londono, JD Stehling, FC AF Alamo, RG Kim, MH Mandelkern, L Galante, MJ Wignall, GD Londono, JD Stehling, FC TI The cocrystallization of mixtures of homopolymers and copolymers: Polyolefins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 FAMU FSU, Coll Engn, Dept Chem Engn, Tallahassee, FL 32310 USA. Florida State Univ, Dept Chem, Tallahassee, FL 32306 USA. Florida State Univ, Inst Mol Biophys, Tallahassee, FL 32306 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 167-PMSE BP U331 EP U331 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501064 ER PT J AU Albinati, A Koetzle, TF AF Albinati, A Koetzle, TF TI Exploiting neutrons to probe the structures, and vibrational and rotational spectra, of inorganic and organometallic systems SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Milan, Inst Pharmaceut Chem, I-20131 Milan, Italy. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RI Albinati, Alberto/I-1262-2015 OI Albinati, Alberto/0000-0002-8779-3327 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 005-INOR BP U702 EP U702 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402233 ER PT J AU Andersen, RA Jia, L Blosch, LL AF Andersen, RA Jia, L Blosch, LL TI Preparation and reactions of uranium(IV) metallocenes with U=E multiple bonds. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 061-INOR BP U722 EP U722 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402289 ER PT J AU Armantrout, GA Brummond, W Ebbinghaus, B VanKonynenberg, R Farmer, J AF Armantrout, GA Brummond, W Ebbinghaus, B VanKonynenberg, R Farmer, J TI Fabrication requirements for the ceramic form for the immobilization of Pu for disposition. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 106-IEC BP U684 EP U684 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402183 ER PT J AU Assefa, Z Haire, RG AF Assefa, Z Haire, RG TI Two photon absorption and phonon assisted excitation of Tb(III) and Am(III) in a silicate matrix. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, CASD, Oak Ridge, TN 37831 USA. Winston Salem State Univ, Dept Phys Sci, Winston Salem, NC 27110 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 527-INOR BP U852 EP U852 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402756 ER PT J AU Atcher, RW AF Atcher, RW TI Strategies for in situ production of alpha emitters. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, CST Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 097-NUCL BP U957 EP U957 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403086 ER PT J AU Atcher, RW AF Atcher, RW TI Rethinking radionuclide therapy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, CST Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 016-NUCL BP U933 EP U933 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403006 ER PT J AU Atkins, HL Srivastava, SC AF Atkins, HL Srivastava, SC TI Radionuclides for treatment of bone pain from metastatic malignancy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 035-NUCL BP U938 EP U938 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403025 ER PT J AU Aubart, MA Duncan, AP Kaplan, AW Krska, SW Mullins, S Polse, JL Ritter, J Sweeney, ZK Tellers, DM Zuckerman, RL Andersen, RA Bergman, RG AF Aubart, MA Duncan, AP Kaplan, AW Krska, SW Mullins, S Polse, JL Ritter, J Sweeney, ZK Tellers, DM Zuckerman, RL Andersen, RA Bergman, RG TI Organometallic atom- and group-transfer reactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 057-INOR BP U721 EP U721 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402285 ER PT J AU Back, BB Blumenthal, DJ Davids, CN Henderson, DJ Hermann, R Hofman, DJ Jiang, CL Nanal, V Penttila, HT Wuosmaa, AH AF Back, BB Blumenthal, DJ Davids, CN Henderson, DJ Hermann, R Hofman, DJ Jiang, CL Nanal, V Penttila, HT Wuosmaa, AH TI Viscosity in the fission motion of hot nuclei. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. RI Penttila, Heikki/A-4420-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 073-NUCL BP U950 EP U950 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403062 ER PT J AU Bai, S Yonker, CR AF Bai, S Yonker, CR TI Solvation dynamics in alcohol mixtures determined by NMR at high pressures and temperatures. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm & Energy Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 135-ANYL BP U99 EP U99 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400317 ER PT J AU Bakel, AJ Bakel, AJ Buck, EC Ebbinghaus, BB Chamberlain, DB Wolf, SF AF Bakel, AJ Bakel, AJ Buck, EC Ebbinghaus, BB Chamberlain, DB Wolf, SF TI The corrosion behavior of individual elements during the corrosion of Pu-titanate ceramics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RI Buck, Edgar/D-4288-2009; Buck, Edgar/N-7820-2013 OI Buck, Edgar/0000-0001-5101-9084 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 107-IEC BP U684 EP U684 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402184 ER PT J AU Baktash, C AF Baktash, C TI Nuclear structure studies with radioactive ion beams. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 068-NUCL BP U948 EP U948 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403057 ER PT J AU Baldwin, DP Zamzow, DS Miller, GP AF Baldwin, DP Zamzow, DS Miller, GP TI A high resolution interferometric spectrometer for continuous emission monitoring SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 090-ANYL BP U86 EP U86 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400273 ER PT J AU Balmer, ML Su, Y Nenoff, TM Navrotsky, A Bunker, BC AF Balmer, ML Su, Y Nenoff, TM Navrotsky, A Bunker, BC TI Evaluation of thermally converted Silicotitanate waste forms. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ Calif Davis, Davis, CA 95616 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 090-IEC BP U680 EP U680 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402166 ER PT J AU Bartels, DM Crowell, RA AF Bartels, DM Crowell, RA TI Low-energy photoionization of water: Proton-coupled electron transfer? SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 222-PHYS BP U206 EP U206 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500699 ER PT J AU Baxter, JM Barbas, JT Sigman, ME Dabestani, R AF Baxter, JM Barbas, JT Sigman, ME Dabestani, R TI Environmental organic photochemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Valdosta State Univ, Dept Chem, Valdosta, GA 31698 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 250-CHED BP U236 EP U236 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400764 ER PT J AU Bays, JT Linehan, JC AF Bays, JT Linehan, JC TI Time resolved FTIR studies of organometallic compounds in supercritical fluids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 132-ANYL BP U98 EP U98 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400314 ER PT J AU Becker, JA AF Becker, JA TI What's up at GEANIE: Studies of proton rich nuclei, double phonon excitations, actinide cross sections. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 048-NUCL BP U942 EP U942 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403037 ER PT J AU Becker, JA AF Becker, JA TI Sheline and his west coast allies explore nuclear structure with tritium induced reactions at LANL's ion beam facility. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 008-NUCL BP U931 EP U931 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402998 ER PT J AU Beitz, JV AF Beitz, JV TI Sorption from solution to final waste form: A single material approach SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 122-IEC BP U688 EP U689 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402199 ER PT J AU Beitz, JV Williams, CW AF Beitz, JV Williams, CW TI Luminescence detection of uranium in hydrofluoric acid solutions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 049-IEC BP U669 EP U669 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402128 ER PT J AU Bell, AT AF Bell, AT TI In-situ infrared spectroscopy studies of catalysts. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 220-COLL BP U467 EP U467 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401506 ER PT J AU Berg, JM Veirs, DK Smith, CA Vaughn, RB Cisneros, MR AF Berg, JM Veirs, DK Smith, CA Vaughn, RB Cisneros, MR TI Nitrate and chloride complexation of Pu(IV) at extremely high ionic strengths SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 422-INOR BP U822 EP U822 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402651 ER PT J AU Blair, DS Parks, JE Powell, GL AF Blair, DS Parks, JE Powell, GL TI Classification of diffuse reflectance infrared spectra of cellulose based materials for on-line process monitoring. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. Oak Ridge Ctr Mfg Technol, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 016-ANYL BP U65 EP U65 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400201 ER PT J AU Blank, DA Hemmi, N Suits, AG Lee, YT AF Blank, DA Hemmi, N Suits, AG Lee, YT TI A crossed molecular beam investigation of the reaction Cl plus propane HCL+C3H7 using VUV synchroton radiation as a product probe. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 069-PHYS BP U164 EP U164 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500546 ER PT J AU Blau, MS AF Blau, MS TI Containment of molten plutonium using levitation, LA-UR-97-4289. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Adv Technol Grp, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 025-NUCL BP U935 EP U935 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403015 ER PT J AU Bourcier, WL Zhao, P Esser, B AF Bourcier, WL Zhao, P Esser, B TI Dissolution testing and modeling of ceramic waste forms for fissile materials disposition. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 108-IEC BP U685 EP U685 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402185 ER PT J AU Boyle, TJ Pedrotty, DM Tafoya, CJ Scott, B Ziller, JW AF Boyle, TJ Pedrotty, DM Tafoya, CJ Scott, B Ziller, JW TI Novel precursors for ferroelectric materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 521-INOR BP U850 EP U850 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402750 ER PT J AU Bredt, PR Rinehart, DL AF Bredt, PR Rinehart, DL TI K-EAST basin canister sludge gas generation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 031-NUCL BP U937 EP U937 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403021 ER PT J AU Bryan, JC Sachleben, RA Moyer, BA Urvoas, A Chakoumakos, B Hay, BP AF Bryan, JC Sachleben, RA Moyer, BA Urvoas, A Chakoumakos, B Hay, BP TI Cesium-arene interactions as a critical component in selective extraction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Solominow, Sonia/A-4021-2008; Chakoumakos, Bryan/A-5601-2016; Moyer, Bruce/L-2744-2016 OI Chakoumakos, Bryan/0000-0002-7870-6543; Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 424-INOR BP U823 EP U823 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402653 ER PT J AU Buchanan, AC Britt, PF Skeen, JT AF Buchanan, AC Britt, PF Skeen, JT TI Thermolysis mechanism for silica-immobilized benzyl phenyl ether: Radical chemistry under diffusional constraints SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 116-ORGN BP U35 EP U35 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500117 ER PT J AU Buchholz, BA Dingley, KH Roberts, ML Freeman, SPHT Mauthe, RJ AF Buchholz, BA Dingley, KH Roberts, ML Freeman, SPHT Mauthe, RJ TI Bioanalytical accelerator mass spectrometry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Buchholz, Bruce/G-1356-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 130-NUCL BP U966 EP U966 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403118 ER PT J AU Buck, EC Bakel, AJ Chamberlain, DB AF Buck, EC Bakel, AJ Chamberlain, DB TI Phase distribution in a zirconolite-rich ceramic for plutonium immobilization. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. RI Buck, Edgar/D-4288-2009; Buck, Edgar/N-7820-2013 OI Buck, Edgar/0000-0001-5101-9084 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 105-IEC BP U684 EP U684 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402182 ER PT J AU Burger, P Arndtsen, BA Alaimo, PJ Luecke, HF Bergman, RG AF Burger, P Arndtsen, BA Alaimo, PJ Luecke, HF Bergman, RG TI Effect of counteranions on the C-H activation reactivity of Ir(III) cations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 267-INOR BP U778 EP U779 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402495 ER PT J AU Cagle, DW Alford, JM Kennel, SJ Mirzadeh, SB Thrash, TP Wilson, LJ AF Cagle, DW Alford, JM Kennel, SJ Mirzadeh, SB Thrash, TP Wilson, LJ TI Ho-166@C-82: Exploring the use of metallofullerenes in nuclear medicine. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Rice Univ, Dept Chem, Houston, TX 77005 USA. Rice Univ, Lab Biochem & Genet Engn, Houston, TX 77005 USA. TDA Res, Wheat Ridge, CO 80033 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 105-NUCL BP U959 EP U959 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403093 ER PT J AU Cameron, TM Baker, RT AF Cameron, TM Baker, RT TI New C-2-bridged diamines via reductive coupling of imines using diboron compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. Mt Allison Univ, Dept Chem, Sackville, NB E4L 1G8, Canada. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 299-INOR BP U787 EP U787 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402527 ER PT J AU Carpenter, JP Loy, DA Yamanaka, SA McClain, MD Greaves, J Shea, KJ AF Carpenter, JP Loy, DA Yamanaka, SA McClain, MD Greaves, J Shea, KJ TI The impact of substitution geometry on the formation of ethenylene bridged polysilsesquioxanes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Dept Encapsulants & Foams, Albuquerque, NM 87185 USA. Univ Calif Irvine, Dept Chem, Irvine, CA 92717 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 247-POLY BP U418 EP U418 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501358 ER PT J AU Carpenter, MP Amro, H Blumenthal, D Brown, LT Davids, C Fischer, SM Janssens, RVF Khoo, TL Lauritsen, T Lister, CJ Nisius, D Seweryniak, D AF Carpenter, MP Amro, H Blumenthal, D Brown, LT Davids, C Fischer, SM Janssens, RVF Khoo, TL Lauritsen, T Lister, CJ Nisius, D Seweryniak, D TI Studying excited states in nuclei beyond the proton drip-line. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 046-NUCL BP U942 EP U942 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403035 ER PT J AU Cave, RJ Castner, EW AF Cave, RJ Castner, EW TI Ultrafast photo-induced electron-transfer from solvent: Inertial solvent dynamics and electronic coupling. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Harvey Mudd Coll, Dept Chem, Claremont, CA 91711 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 419-PHYS BP U273 EP U273 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500895 ER PT J AU Cavinato, AG Hixson, KK Myers, JD Anderson, GA AF Cavinato, AG Hixson, KK Myers, JD Anderson, GA TI The EMSL collaboratory: A new technology for bringing state-of-the-art research tools to undergraduate students. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Eastern Oregon Univ, Dept Chem, La Grande, OR 97850 USA. Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 095-CHED BP U192 EP U192 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400611 ER PT J AU Chambliss, CK Odom, MA Moyer, BA Martin, CR Strauss, SH AF Chambliss, CK Odom, MA Moyer, BA Martin, CR Strauss, SH TI High-selectivity of a redox-recyclable anion-exchange material containing a hydrophobic ferricenium salt physisorbed to silica gel. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 348-INOR BP U801 EP U801 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402574 ER PT J AU Chaturvedi, S Rodriguez, JA Hanson, JC Brito, JL AF Chaturvedi, S Rodriguez, JA Hanson, JC Brito, JL TI Characterization of pure and sulfided NiMoO4 and CoMoO4 catalysts using synchrotron based X-ray absorption spectroscopy (XAS) and time-resolved X-ray diffraction (XRD). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Inst Venezolano Invest Cient, Ctr Quim, Caracas 1020A, Venezuela. RI Brito, Joaquin/F-4974-2010 NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 009-CATL BP U471 EP U471 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501527 ER PT J AU Chialvo, AA Cummings, PT Simonson, JM Mesmer, RE AF Chialvo, AA Cummings, PT Simonson, JM Mesmer, RE TI Solvation in supercritical electrolyte solutions. Formal and experimental results. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Tennessee, Knoxville, TN 37996 USA. RI Cummings, Peter/B-8762-2013 OI Cummings, Peter/0000-0002-9766-2216 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 213-PHYS BP U204 EP U204 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500690 ER PT J AU Clark, JF Chamberlin, RM Strauss, SH AF Clark, JF Chamberlin, RM Strauss, SH TI Synthesis and use of redox-recyclable organometallic extractants for cationic radionuclides. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Univ Calif Los Alamos Natl Lab, Nucl & Radiochem Grp CST11, Los Alamos, NM USA. RI Chamberlin, Rebecca/A-1335-2011 OI Chamberlin, Rebecca/0000-0001-6468-7778 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 350-INOR BP U801 EP U801 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402576 ER PT J AU Clark, RM AF Clark, RM TI Magnetic rotation of nuclei: Latest results and future perspectives. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 065-NUCL BP U947 EP U948 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403054 ER PT J AU Clement, O Sandrone, G Dixon, D Hay, BP AF Clement, O Sandrone, G Dixon, D Hay, BP TI A MM3(96) force field for metal-amide complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 181-INOR BP U755 EP U755 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402408 ER PT J AU Conley, TB Gilliam, TM AF Conley, TB Gilliam, TM TI Immobilization of beryllium waste in a cement-based grout SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 150-IEC BP U696 EP U696 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402227 ER PT J AU Cowin, JP Tsekouras, AA Iedema, MJ AF Cowin, JP Tsekouras, AA Iedema, MJ TI UHV water-solid interface with soft-landed ions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 012-PHYS BP U148 EP U148 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500489 ER PT J AU Cromaz, M Symons, J Lee, IY MacLeod, RW AF Cromaz, M Symons, J Lee, IY MacLeod, RW TI Storage and analysis of high-fold data. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 080-NUCL BP U951 EP U952 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403069 ER PT J AU Cronauer, DC AF Cronauer, DC TI Coal liquefaction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 033-FUEL BP U602 EP U602 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401927 ER PT J AU Cundari, TR Moody, E AF Cundari, TR Moody, E TI Neural network applications in inorganic chemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Memphis State Univ, Dept Chem, Memphis, TN 38152 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87544 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 207-COMP BP U561 EP U561 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401799 ER PT J AU Curran, HJ Pitz, WJ Westbrook, CK AF Curran, HJ Pitz, WJ Westbrook, CK TI Detailed kinetic modeling studies of hydrocarbon oxidation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 064-PHYS BP U162 EP U162 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500541 ER PT J AU Curro, JG Weinholc, JD AF Curro, JG Weinholc, JD TI Application of integral equation theory to polyolefin liquids and blends. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 051-PMSE BP U295 EP U295 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500952 ER PT J AU Curtiss, LA Baboul, AG Sutjianto, A Halley, JW AF Curtiss, LA Baboul, AG Sutjianto, A Halley, JW TI Lithium polymer electrolytes: Li cation coordination and migration barriers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60515 USA. Univ Minnesota, Dept Phys, Minneapolis, MN 55455 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 283-PHYS BP U224 EP U224 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500759 ER PT J AU Dai, S Simonson, JM Mesmer, RE Toth, LM AF Dai, S Simonson, JM Mesmer, RE Toth, LM TI Solubilities of selected uranium (VI) species in carbonate buffer solutions at high-temperature. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 546-INOR BP U858 EP U858 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402775 ER PT J AU Dai, S Shin, Y Toth, LM Barnes, CE AF Dai, S Shin, Y Toth, LM Barnes, CE TI Spectroscopic probing of adsorption of uranyl to uranyl-imprinted silica sol-gel glass via steady-state and time-resolved fluorescence SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 107-PHYS BP U175 EP U175 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500584 ER PT J AU Dang, LX AF Dang, LX TI Transport of small molecules across liquid-liquid interfaces: A molecular dynamics study. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 148-PHYS BP U186 EP U186 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500625 ER PT J AU Daschbach, JL Stirniman, MJ Smith, RS Joyce, SA Kay, BD AF Daschbach, JL Stirniman, MJ Smith, RS Joyce, SA Kay, BD TI Kinetics of water adsorption, desorption, and hydroxylation on MgO(100). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 406-PHYS BP U269 EP U269 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500882 ER PT J AU Datye, AK Hanprasopwattana, A Sault, A AF Datye, AK Hanprasopwattana, A Sault, A TI Titania promotion of hydrotreating catalysts. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ New Mexico, Ctr Microengineered Mat, Albuquerque, NM 87131 USA. Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 080-PETR BP U135 EP U135 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500461 ER PT J AU Davids, CN Woods, PJ Seweryniak, D Sonzogni, A Batchelder, JC Bingham, CR Davinson, T Henderson, DJ Irvine, RJ Poli, GL Uusitalo, J Walters, WB AF Davids, CN Woods, PJ Seweryniak, D Sonzogni, A Batchelder, JC Bingham, CR Davinson, T Henderson, DJ Irvine, RJ Poli, GL Uusitalo, J Walters, WB TI Proton-emitters - Spherical and deformed. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Edinburgh, Edinburgh EH8 9YL, Midlothian, Scotland. Oak Ridge Associated Univ, UNIRIB, Oak Ridge, TN USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Milan, Milan, Italy. Univ Maryland, College Pk, MD 20742 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 047-NUCL BP U942 EP U942 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403036 ER PT J AU Davis, PL Rivera, MO Salazar, RM Vargas, JA Ulibarri, LS Catanach, AJ Trujillo, LA AF Davis, PL Rivera, MO Salazar, RM Vargas, JA Ulibarri, LS Catanach, AJ Trujillo, LA TI Nuclear materials technology-7 (NMT-7) support of decommissioning, characterization, documentation, and packaging of the Los Alamos National Laboratory, technical area-21, building 152. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 151-IEC BP U696 EP U696 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402228 ER PT J AU deLeon, MJ Alavi, A Ferris, SH Christman, DR Fowler, JS Wolf, AP AF deLeon, MJ Alavi, A Ferris, SH Christman, DR Fowler, JS Wolf, AP TI What have we learned in 20 years about Alzheimer's disease using (18)FDG-PET? SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NYU, Med Ctr, Dept Psychiat, New York, NY USA. Brookhaven Natl Lab, Dept Chem, Upton, NY USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 122-NUCL BP U964 EP U964 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403110 ER PT J AU Dewey, SL Brodie, JD Wolf, AP AF Dewey, SL Brodie, JD Wolf, AP TI PET studies of neurotransmitter interactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NYU, New York, NY 10016 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 134-NUCL BP U967 EP U967 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403122 ER PT J AU Dieckman, SL Meiser, JH Waterfield, LG Slaughter, SF Jendrzejczyk, JA Raptis, AC AF Dieckman, SL Meiser, JH Waterfield, LG Slaughter, SF Jendrzejczyk, JA Raptis, AC TI Magnetic resonance sensing system for on-line monitoring of Tc-99 in radioactive tank waste cleanup processes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 023-NUCL BP U935 EP U935 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403013 ER PT J AU Dietz, ML Chiarizia, R Bond, AH Herlinger, AW Hay, BP AF Dietz, ML Chiarizia, R Bond, AH Herlinger, AW Hay, BP TI Synergism in the extraction of cations by mixtures of dialkylphosphoric acids and substituted crown ethers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Loyola Univ, Chicago, IL 60226 USA. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 041-IEC BP U666 EP U667 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402117 ER PT J AU Ding, YS Fowler, JS Wolf, A AF Ding, YS Fowler, JS Wolf, A TI Probing the biochemical basis of the PET image. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 136-NUCL BP U968 EP U968 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403124 ER PT J AU Ding, YS Fowler, JS Volkow, N AF Ding, YS Fowler, JS Volkow, N TI Positron emission tomography (PET) imaging of optically active drugs. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 003-ORGN BP U2 EP U2 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500004 ER PT J AU Doering, WV Wolf, AP AF Doering, WV Wolf, AP TI The fenchol-beta-fenchene rearrangement. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Harvard Univ, Cambridge, MA 02138 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 108-NUCL BP U960 EP U960 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403096 ER PT J AU Dorhout, PK Strauss, SH Gash, AE Dysleski, LM Flashenreim, CJ Kalaveshi, A Allen, PG AF Dorhout, PK Strauss, SH Gash, AE Dysleski, LM Flashenreim, CJ Kalaveshi, A Allen, PG TI Recyclable soft heavy-metal specific ion sorbants: Alkali metal-ion intercalated metal chalcogenides - Synthesis and design. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 233-INOR BP U769 EP U769 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402461 ER PT J AU DuBois, DL Berning, DE AF DuBois, DL Berning, DE TI Transition metal phosphine complexes as electrocatalysts for CO2 reduction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 003-COLL BP U405 EP U405 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401289 ER PT J AU Eastwood, D Zickafoose, M Martin, JB Perry, DL Burggraf, LW AF Eastwood, D Zickafoose, M Martin, JB Perry, DL Burggraf, LW TI Vibrational and luminescence studies of weathered uranium oxides. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF, Inst Technol, Wright Patterson AFB, OH 45433 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, GT Seaborg Inst Transactinium Sci, Lawrence Livermore Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 367-INOR BP U806 EP U806 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402594 ER PT J AU Eldridge, JE Lin, Y Wang, HH Williams, JM Kini, AM AF Eldridge, JE Lin, Y Wang, HH Williams, JM Kini, AM TI Superconductivity-induced effects on the Raman spectra of some organic superconductors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada. Argonne Natl Lab, Div Chem & Mat Sci, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 067-IEC BP U674 EP U674 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402147 ER PT J AU Epling, WS Herman, GS Henderson, MA Peden, CHF AF Epling, WS Herman, GS Henderson, MA Peden, CHF TI Comparison of the interaction of titania surfaces with two probe molecules, NH3 and D2O. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 134-PHYS BP U182 EP U182 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500611 ER PT J AU Eskay, TP Buchanan, AC AF Eskay, TP Buchanan, AC TI Pyrolysis mechanisms of aromatic carboxylic acids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 210-ORGN BP U62 EP U63 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500211 ER PT J AU Farrell, JT Durant, JL Taatjes, CA AF Farrell, JT Durant, JL Taatjes, CA TI Experimental and ab initio investigations of Cl atom reactions with C3 unsaturated hydrocarbons. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 066-PHYS BP U163 EP U163 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500543 ER PT J AU Ferrieri, RA AF Ferrieri, RA TI Stereo organic hot atom chemistry: From past models to present perceptions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 112-NUCl BP U961 EP U961 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403100 ER PT J AU Fisher, DR AF Fisher, DR TI Comparison of alpha-emitting radionuclides for cancer treatment. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Hanford Radioisotopes Program, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 017-NUCL BP U933 EP U933 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403007 ER PT J AU Fisher, IA Schilke, TC Bell, AT AF Fisher, IA Schilke, TC Bell, AT TI Development of high selectivity catalysts for the conversion of CO2 to methanol. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 111-COLL BP U436 EP U436 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401397 ER PT J AU Fleming, GR AF Fleming, GR TI Ultrafast nonlinear spectroscopy of liquids, solutions and proteins. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 230-PHYS BP U208 EP U208 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500707 ER PT J AU Fockenberg, C Hall, GE Muckerman, JT Sears, TJ Preses, JM Weston, RE Bernstein, HJ AF Fockenberg, C Hall, GE Muckerman, JT Sears, TJ Preses, JM Weston, RE Bernstein, HJ TI Radical-radical kinetics: A new approach. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Chem Dept 555A, Upton, NY 11973 USA. RI Muckerman, James/D-8752-2013; Sears, Trevor/B-5990-2013 OI Sears, Trevor/0000-0002-5559-0154 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 086-PHYS BP U169 EP U169 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500563 ER PT J AU Fornstedt, T Guiochon, G AF Fornstedt, T Guiochon, G TI Modeling of chiral liquid chromatography SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. Univ Tennessee, Knoxville, TN 37996 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 096-ANYL BP U88 EP U88 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400279 ER PT J AU Fowler, JS AF Fowler, JS TI Alfred Wolf's career at Brookhaven National Laboratory: From hot atom chemistry to imaging the human brain. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 107-NUCL BP U960 EP U960 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403095 ER PT J AU Fowler, JS AF Fowler, JS TI Rapid organic synthesis, positron emission tomography and imaging the human brain. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 004-ORGN BP U3 EP U3 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500005 ER PT J AU Foxx, CL Hagan, RC Foster, LA AF Foxx, CL Hagan, RC Foster, LA TI Free release of nonradioactive waste from radioactive material handling and processing areas at Los Alamos SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 142-IEC BP U694 EP U694 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402219 ER PT J AU Fujita, E Brunschwig, B Hambright, P Neta, P AF Fujita, E Brunschwig, B Hambright, P Neta, P TI Carbon dioxide reduction catalyzed by metalloporphyrins: Interaction of reduced iron- and cobalt porphyrins with CO2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Howard Univ, Dept Chem, Washington, DC 20059 USA. NIST, Phys & Chem Properties Div, Gaithersburg, MD 20899 USA. RI Fujita, Etsuko/D-8814-2013 NR 0 TC 0 Z9 0 U1 4 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 083-COLL BP U427 EP U428 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401369 ER PT J AU Fulton, JL Jackson, K AF Fulton, JL Jackson, K TI Properties of an AOT microemulsion formed in supercritical CO2 using a fluorinated co-surfactant. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 133-ANYL BP U98 EP U98 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400315 ER PT J AU Fulton, JL Palmer, BJ AF Fulton, JL Palmer, BJ TI Contact ion pair structure in supercritical water solutions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 212-PHYS BP U203 EP U203 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500689 ER PT J AU Gannepalli, A Porter, MD Mallapragada, SK AF Gannepalli, A Porter, MD Mallapragada, SK TI Nanoscale patterning of polymer surfaces using atomic force microscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ Sci & Technol, Dept Chem Engn, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Microanalyt Instrumentat Ctr, Ames Lab, US DOE, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA. RI Mallapragada, Surya/F-9375-2012 NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 002-PMSE BP U280 EP U280 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500903 ER PT J AU Gaspar, P Ferrieri, R Wolf, A AF Gaspar, P Ferrieri, R Wolf, A TI The interplay between hot atom chemistry and other approaches to mechanistic studies of carbon and silicon atoms. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington Univ, St Louis, MO 63130 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 111-NUCL BP U961 EP U961 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403099 ER PT J AU Georgiev, G Dai, PS Oyebode, E Cebe, P Capel, M AF Georgiev, G Dai, PS Oyebode, E Cebe, P Capel, M TI Thermal analysis and X-ray scattering study of two stage melt crystallization of peek. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Tufts Univ, Dept Phys & Astron, Medford, MA 02155 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 168-PMSE BP U332 EP U332 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501065 ER PT J AU Goodson, DZ Valone, SM AF Goodson, DZ Valone, SM TI An effective-potential theory for the temperature dependence of thermal rate constants for hydrogen abstraction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. So Methodist Univ, Dept Chem, Dallas, TX 75275 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 081-PHYS BP U167 EP U167 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500558 ER PT J AU Graff, DK Wrobleski, DA Marsh, AL Kober, EM Smith, ME Schoonover, JR AF Graff, DK Wrobleski, DA Marsh, AL Kober, EM Smith, ME Schoonover, JR TI Analysis of a polyurethane elastomer using thermal 2D FT-IR. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 014-PMSE BP U284 EP U284 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500915 ER PT J AU Greathouse, JA Sposito, G Davison, AT AF Greathouse, JA Sposito, G Davison, AT TI Rotational dynamics and structure of adsorbed water on charged clay mineral surfaces SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Incarnate Word, Dept Chem, San Antonio, TX 78209 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. Allegheny Coll, Dept Chem, Meadville, PA 16335 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 409-PHYS BP U270 EP U270 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500885 ER PT J AU Gruetzmacher, KM Smith, KK Montoya, AJ Wieneke, RE Wulff, DR Smith, CA AF Gruetzmacher, KM Smith, KK Montoya, AJ Wieneke, RE Wulff, DR Smith, CA TI Los Alamos Plutonium Facility Waste Management System. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 055-IEC BP U670 EP U670 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402131 ER PT J AU Guiochon, G AF Guiochon, G TI Reminiscences of experiments past. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 082-ANYL BP U84 EP U84 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400265 ER PT J AU Ha, BC Fellinger, TL Hodoh, OB Hay, MS Bibler, NE AF Ha, BC Fellinger, TL Hodoh, OB Hay, MS Bibler, NE TI Sludge washing and acid adjustment during the radioactive demonstration of the DWPF coupled feed operation. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Westinghouse Savannah River Co, Savannah River Technol Ctr, Aiken, SC 29808 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 043-IEC BP U667 EP U667 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402119 ER PT J AU Hall, DL Sterner, SM Shentwu, W Wagner, PD Hadley, S Hay, BP AF Hall, DL Sterner, SM Shentwu, W Wagner, PD Hadley, S Hay, BP TI Applying fluid inclusions to petroleum exploration and production problems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Fluid Incis Technol, Broken Arrow, OK 74012 USA. PGS Reservoir, Houston, TX 77042 USA. Range Petr, Calgary, AB T2P 0S8, Canada. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 049-GEOC BP U631 EP U631 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402017 ER PT J AU Hall, GE North, SW Marr, AJ AF Hall, GE North, SW Marr, AJ TI Threshold effects in the unimolecular dissociation of NCCN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RI North, Simon/G-5054-2012 OI North, Simon/0000-0002-0795-796X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 031-PHYS BP U153 EP U153 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500508 ER PT J AU Harding, LB Klippenstein, SJ AF Harding, LB Klippenstein, SJ TI Radical-radical reactions: H+C2H5 AND CH3+CH3. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 002-PHYS BP U145 EP U145 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500479 ER PT J AU Harris, TM Brinker, CJ Sriram, C AF Harris, TM Brinker, CJ Sriram, C TI Processing of silica aerogel powder for thermal barrier applications. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ New Mexico, Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA. Univ Tulsa, Dept Chem, Tulsa, OK 74104 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 080-COLL BP U427 EP U427 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401366 ER PT J AU Hartzell, CJ Cygan, RT Nagy, KL AF Hartzell, CJ Cygan, RT Nagy, KL TI Molecular modeling of the tributylphosphate solvate of europium within the hectorite clay interlayer. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA. Univ Colorado, Dept Geol, Boulder, CO 80309 USA. No Arizona Univ, Dept Chem, Flagstaff, AZ 86011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 193-COMP BP U557 EP U557 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401785 ER PT J AU Hash, MC Burns, GL Thalacker, JP Simon, DR Pereira, C Lewis, MA AF Hash, MC Burns, GL Thalacker, JP Simon, DR Pereira, C Lewis, MA TI Hot isostatic pressing of sodalite-glass composites SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60448 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 117-IEC BP U687 EP U687 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402194 ER PT J AU Hatchell, J AF Hatchell, J TI Simulating the solubility of mixed salt systems in waste acid. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 057-IEC BP U671 EP U671 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402133 ER PT J AU Haustein, PE AF Haustein, PE TI Nuclear stimulated processes at metal oxide/water interfaces and their relevance to degradation of spent nuclear fuel. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 030-NUCL BP U937 EP U937 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403020 ER PT J AU Head-Gordon, M AF Head-Gordon, M TI Localization, delocalization and renormalization in molecular electronic structure. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 226-PHYS BP U207 EP U207 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500703 ER PT J AU Henderson, MA AF Henderson, MA TI Probing the surface chemistry of single crystal metal oxides with water. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 410-PHYS BP U270 EP U271 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500886 ER PT J AU Hessler, JP AF Hessler, JP TI Calculation of reactive cross sections and microcanonical rates from kinetic and thermochemical data. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 291-PHYS BP U226 EP U226 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500767 ER PT J AU Hingerty, BE Singh, SB Broyde, S AF Hingerty, BE Singh, SB Broyde, S TI Computed structures of DNA damaged by activated benzo[a]pyrenes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. Merck Res Labs, Rahway, NJ 07066 USA. NYU, Dept Biol, New York, NY 10003 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 326-CHED BP U256 EP U256 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400839 ER PT J AU Hodgson, KO Hedman, B AF Hodgson, KO Hedman, B TI New approaches to the analysis of XAS data - Distances, angles and electronic structure SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 372-INOR BP U808 EP U808 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402599 ER PT J AU Jacobson, SC Ramsey, JM AF Jacobson, SC Ramsey, JM TI Lab-on-a-chip devices for chemical and biochemical assays SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 123-ANYL BP U95 EP U95 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400306 ER PT J AU Jarvinen, GD Smith, BF Robison, TW Purdy, GM Gibson, RR Stark, PC Rogers, YC Sauer, NN Birnbaum, ER AF Jarvinen, GD Smith, BF Robison, TW Purdy, GM Gibson, RR Stark, PC Rogers, YC Sauer, NN Birnbaum, ER TI Removal and recovery of metal ions from process and waste streams using water-soluble polymers and ultrafiltration. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 010-INOR BP U703 EP U703 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402238 ER PT J AU Jia, SL Zhang, J Ema, T Nelson, NY Ma, JG Medforth, CJ Smith, KM Shelnutt, JA AF Jia, SL Zhang, J Ema, T Nelson, NY Ma, JG Medforth, CJ Smith, KM Shelnutt, JA TI Axial ligand affinity variation induced by nonplanar distortion. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Catalysis & Chem Technol Dept, Albuquerque, NM 87185 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. RI Shelnutt, John/A-9987-2009; Smith, Kevin/G-1453-2011 OI Shelnutt, John/0000-0001-7368-582X; Smith, Kevin/0000-0002-6736-4779 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 310-INOR BP U790 EP U790 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402538 ER PT J AU Johnson, MC Sweetin, D Crandell, R AF Johnson, MC Sweetin, D Crandell, R TI Ultimate control: Accessing and controlling instrumentation behind the network firewall. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 147-COMP BP U545 EP U545 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401739 ER PT J AU Johnson, MC Sweetin, D Crandell, R AF Johnson, MC Sweetin, D Crandell, R TI Ultimate control: Accessing and controlling instrumentation behind the network firewall. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 004-TECH BP U396 EP U397 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401275 ER PT J AU Jonah, CD Takahashi, K AF Jonah, CD Takahashi, K TI Measurement of electron transfer reactions in supercritical ethane SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Hokkaido Univ, Div Quantum Energy Engn, Sapporo, Hokkaido 060, Japan. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 040-PHYS BP U156 EP U156 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500517 ER PT J AU Jorgensen, JD AF Jorgensen, JD TI Characterization of the defect chemistry of high-temperature superconductors using neutron powder diffraction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 194-INOR BP U759 EP U759 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402422 ER PT J AU Kaganove, SN Grate, JW AF Kaganove, SN Grate, JW TI Hydrosilation polymerization: A versatile approach to the synthesis of new carbosiloxane polymers for use as sensor materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 371-POLY BP U451 EP U451 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501482 ER PT J AU Karet, GB Antonio, MR Wasserman, SR Williams, CW Guzowski, JP AF Karet, GB Antonio, MR Wasserman, SR Williams, CW Guzowski, JP TI Iron sulfides and reservoir fouling in the Prudhoe Bay area. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Indiana Univ, Dept Chem, Bloomington, IN 47408 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 063-GEOC BP U636 EP U636 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402035 ER PT J AU Kaviratna, PD Wang, Y Kim, A Nie, Z Peden, CHF AF Kaviratna, PD Wang, Y Kim, A Nie, Z Peden, CHF TI Shape selective heterogeneous catalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 073-PETR BP U133 EP U133 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500454 ER PT J AU Keiser, DD AF Keiser, DD TI Production and testing of radioactive metallic waste forms. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Idaho Falls, ID 83403 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 079-IEC BP U677 EP U677 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402155 ER PT J AU Kelley, SS Wang, XM Myers, MD AF Kelley, SS Wang, XM Myers, MD TI Application of gel theory to the crosslinking of natural phenolics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Ctr Renewable Technol & Mat, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 018-CELL BP U132 EP U132 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400413 ER PT J AU Kennel, SJ Boll, RA Mirzadeh, S AF Kennel, SJ Boll, RA Mirzadeh, S TI CHX-DTPA-antibody conjugates for vascular targeted radioimmunotherapy with Bi-213 and Y-90. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. NCI, Radiat Oncol Branch, NIH, Rockville, MD 20892 USA. RI Boll, Rose/C-4138-2016 OI Boll, Rose/0000-0003-2507-4834 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 089-NUCL BP U954 EP U954 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403078 ER PT J AU Khodakov, AY Bell, AT Iglesia, E AF Khodakov, AY Bell, AT Iglesia, E TI Title oxidative dehydrogenation of propane on supported vanadium oxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, EO Lawrence Natl Lab, Berkeley, CA 94720 USA. RI Khodakov, Andrei/I-3379-2014 OI Khodakov, Andrei/0000-0003-4599-3969 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 063-CATL BP U488 EP U488 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501581 ER PT J AU Khoudiakov, M Ellis, AB AF Khoudiakov, M Ellis, AB TI Mercury-assisted synthesis of intermetallic and oxide materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Wisconsin, Dept Chem, Madison, WI 53706 USA. Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 260-INOR BP U777 EP U777 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402488 ER PT J AU Kleier, DA Daub, JP Dixon, DA AF Kleier, DA Daub, JP Dixon, DA TI Computer aided design of a new class of metal chelating fungicides. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 DuPont Co Inc, Stine Haskell Res Ctr, Dept Agr Prod, Newark, DE 19714 USA. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 021-AGFD BP U7 EP U7 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400024 ER PT J AU Klippenstein, SJ Harding, LB Kristyan, S Lin, MC AF Klippenstein, SJ Harding, LB Kristyan, S Lin, MC TI Variable reaction coordinate transition state theory SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Case Western Reserve Univ, Dept Chem, Cleveland, OH 44106 USA. Argonne Natl Lab, Div Chem, Theoret Chem Grp, Argonne, IL 60439 USA. Emory Univ, Dept Chem, Atlanta, GA 30322 USA. RI Kristyan, Sandor/A-1902-2011 NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 200-PHYS BP U200 EP U200 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500677 ER PT J AU Knapp, FF Beets, AL Mirzadeh, S AF Knapp, FF Beets, AL Mirzadeh, S TI Rhemium-188 - An attractive, readily available generator-produced radioisotope for introvascular inhibition of coronary restenosis and cancer therapy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Nucl Med Grp, Oak Ridge, TN 37831 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 020-NUCL BP U934 EP U934 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403010 ER PT J AU Knecht, DA Johnson, S Vinjamuri, K O'Holleran, TP Frank, S RAman, SV Staples, BA AF Knecht, DA Johnson, S Vinjamuri, K O'Holleran, TP Frank, S RAman, SV Staples, BA TI Glass-ceramic waste forms for immobilizing plutonium. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab W, Idaho Falls, ID 83404 USA. LMITCO, Idaho Falls, ID 83404 USA. RI Frank, Steven/B-9046-2017 OI Frank, Steven/0000-0001-8259-6722 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 121-IEC BP U688 EP U688 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402198 ER PT J AU Kober, EM AF Kober, EM TI Quantum molecular dynamics study of explosives. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 298-PHYS BP U228 EP U228 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500774 ER PT J AU Koetzle, TF AF Koetzle, TF TI Neutron diffraction analysis of the structures of organometallic and coordination compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 386-INOR BP U812 EP U812 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402615 ER PT J AU Kolsky, KL Joshi, V Meinken, GE Khandelwal, B Mausner, LF Sweet, MP Srivastava, SC AF Kolsky, KL Joshi, V Meinken, GE Khandelwal, B Mausner, LF Sweet, MP Srivastava, SC TI Effect of trace metal contaminants on labeling antibodies with scandium-47. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 060-NUCL BP U946 EP U946 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403049 ER PT J AU Koshti, N Jacobs, H Jarvinen, G Gopalan, A AF Koshti, N Jacobs, H Jarvinen, G Gopalan, A TI Development of novel polymers that contain discrete tetrahydroxamate binding units for the selective binding of actinides. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 New Mexico State Univ, Dept Chem & Biochem, Las Cruces, NM 88003 USA. Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 040-IEC BP U666 EP U666 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402116 ER PT J AU Kramarz, KW Klingler, RJ Rathke, JW AF Kramarz, KW Klingler, RJ Rathke, JW TI Toroid NMR spectroscopy in high-pressure high-temperature catalysis. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 015-CATL BP U473 EP U473 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501533 ER PT J AU Kress, JD Leung, PC Tawa, GJ Hay, PJ AF Kress, JD Leung, PC Tawa, GJ Hay, PJ TI Calculation of a reaction path for KOH catalyzed ring-opening polymerization of cyclic siloxanes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. 3M Co, Tech Comp Dept, St Paul, MN 55144 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 137-POLY BP U388 EP U388 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501248 ER PT J AU Krohn, KA Link, JM Bida, JT Young, PE Larson, DJ Pasquinelli, RJ AF Krohn, KA Link, JM Bida, JT Young, PE Larson, DJ Pasquinelli, RJ TI A He-3 RFQ for PET isotope production. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Washington, Seattle, WA 98195 USA. Biomed Res Fdn, Shreveport, LA USA. Sci Applicat Int Corp, San Diego, CA 92121 USA. Fermilab, Batavia, IL USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 114-NUCL BP U961 EP U961 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403102 ER PT J AU Lauritsen, T Khoo, TL Carpenter, MP Hackman, G Ackermann, D Ahmad, I Amro, H Blumenthal, DJ Fischer, SM Hannachi, F Janssens, RVF Korichi, A Martens, AL Moore, EF Nisius, DT AF Lauritsen, T Khoo, TL Carpenter, MP Hackman, G Ackermann, D Ahmad, I Amro, H Blumenthal, DJ Fischer, SM Hannachi, F Janssens, RVF Korichi, A Martens, AL Moore, EF Nisius, DT TI The decay-out of superdeformed bands in the A=190 region. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. CNRS, IN2P3, F-91405 Orsay, France. N Carolina State Univ, Raleigh, NC 27695 USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 066-NUCL BP U948 EP U948 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403055 ER PT J AU Le, V Ludwig, D MacInnes, M AF Le, V Ludwig, D MacInnes, M TI Determination of the complementation ability of mouse derived apurinic/apyrimidinic endonuclease (APE) gene in APN1-deficient yeast. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Life Sci, Los Alamos, NM USA. Univ Tulsa, Dept Biochem, Tulsa, OK 74104 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 547F-CHED BP U335 EP U335 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401066 ER PT J AU Lee, IY AF Lee, IY TI Neutron-rich nuclei produced in deep inelastic reactions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 085-NUCL BP U953 EP U953 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403074 ER PT J AU Lerma, F LaFosse, DR Sarantites, DG Clark, RM Lee, IY Macchiavelli, AO Tabor, SL Soltysik, D Baktash, C AF Lerma, F LaFosse, DR Sarantites, DG Clark, RM Lee, IY Macchiavelli, AO Tabor, SL Soltysik, D Baktash, C TI Comparative halflives of SD states in A=80-83 strontium isotopes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington Univ, St Louis, MO 63130 USA. ORNL, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 092-NUCL BP U955 EP U955 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403081 ER PT J AU Linehan, JC Bays, JT Bitterwolf, TE Franz, JA AF Linehan, JC Bays, JT Bitterwolf, TE Franz, JA TI Reaction kinetics for organometallic compounds in supercritical fluids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. Univ Idaho, Dept Chem, Moscow, ID 83843 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 110-ANYL BP U92 EP U92 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400293 ER PT J AU Luo, HM Knapp, FF AF Luo, HM Knapp, FF TI Silver complexes of the derivatized aza-thio crown ether ligands SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Nucl Med Grp, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 113-INOR BP U736 EP U737 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402341 ER PT J AU Luo, JS Liu, GK AF Luo, JS Liu, GK TI Radiation damage in 244Cm-doped orthophosphate crystals: An analytical electron microscopy study. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 092-IEC BP U681 EP U681 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402172 ER PT J AU Ma, JG Zhang, J Franco, R Jia, SL Shelnutt, JA AF Ma, JG Zhang, J Franco, R Jia, SL Shelnutt, JA TI Structural origin of the nonplanar hemes in cytochromes C-3. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Catalysis & Chem Technol Dept, Albuquerque, NM 87185 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, P-2825 Monte De Caparica, Portugal. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 308-INOR BP U790 EP U790 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402536 ER PT J AU Macdonald, RG He, G Tokue, I AF Macdonald, RG He, G Tokue, I TI Reaction dynamics in polyatomic systems: The dynamics of the family of reactions H+XCN, branching ratios and energy deposition. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 293-PHYS BP U227 EP U227 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500769 ER PT J AU Mahajan, D Lin, MS Premuzic, ET AF Mahajan, D Lin, MS Premuzic, ET TI Heteroatom removal from dense carbonaceous sources: The (BIO)under-bar-CATT/(CHEM)under-bar-CAT approach. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 5 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 082-PETR BP U135 EP U135 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500463 ER PT J AU Marinov, NM Pitz, WJ Westbrook, CK Vincitore, AM Senkan, SM Melius, CF Lutz, AE AF Marinov, NM Pitz, WJ Westbrook, CK Vincitore, AM Senkan, SM Melius, CF Lutz, AE TI An experimental and modeling investigation of a methane opposed flow diffusion flame SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 306-PHYS BP U230 EP U231 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500782 ER PT J AU Marinov, NM Melius, CF AF Marinov, NM Melius, CF TI Rate constant calculations of the propargyl-propargyl reaction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 305-PHYS BP U230 EP U230 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500781 ER PT J AU Maroni, VA Fischer, AK Wu, KT AF Maroni, VA Fischer, AK Wu, KT TI Using imaging Raman microscopy to explore phase evolution in composite ceramic superconductors SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SUNY Coll Old Westbury, Old Westbury, NY 11586 USA. Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 025-IEC BP U662 EP U662 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402101 ER PT J AU Marshall, CL Tilson, L Brenner, JR Palmer, M AF Marshall, CL Tilson, L Brenner, JR Palmer, M TI Ab initio investigation of the hydrodesulfurization process. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 030-PETR BP U122 EP U122 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500411 ER PT J AU Mattus, CH AF Mattus, CH TI Macroencapsulation of mixed waste debris using sulfur polymer cement SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. RI Mattus, Catherine/E-5591-2017 OI Mattus, Catherine/0000-0002-4574-1588 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 148-IEC BP U695 EP U695 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402225 ER PT J AU Mausner, LF Kolsky, KL Srivastava, SC AF Mausner, LF Kolsky, KL Srivastava, SC TI Development of electron emitting radionuclides for therapy at BNL. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 014-NUCL BP U932 EP U932 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403004 ER PT J AU McCoy, JD Tillman, PA Rottach, DR Plimpton, SJ AF McCoy, JD Tillman, PA Rottach, DR Plimpton, SJ TI Structure and thermodynamics of simple blends. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 New Mexico Inst Min & Technol, Dept Mat, Socorro, NM 87801 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RI Rottach, Dana/E-8350-2010; McCoy, John/B-3846-2010 OI McCoy, John/0000-0001-5404-1404 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 069-PMSE BP U301 EP U301 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500967 ER PT J AU McCright, RD AF McCright, RD TI Materials evaluation for the waste package container SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 076-IEC BP U676 EP U676 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402152 ER PT J AU McIlroy, A AF McIlroy, A TI Radical concentrations in rich methane flames. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 311-PHYS BP U232 EP U232 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500787 ER PT J AU McLemore, DK Dixon, DA Strauss, SH AF McLemore, DK Dixon, DA Strauss, SH TI Liquid HF fluorinations of CB11H12- or CB9H10-. Mechanistic insight with density functional methods. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 106-INOR BP U735 EP U735 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402334 ER PT J AU McLuckey, SA Stephenson, JL Asano, KG Goeringer, DE AF McLuckey, SA Stephenson, JL Asano, KG Goeringer, DE TI Fundamental and applied aspects of bio-ion chemistry in the Paul trap. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 118-ANYL BP U94 EP U94 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400301 ER PT J AU Melius, CF AF Melius, CF TI Application of bond-additivity-corrected (BAC) methods for accurate thermochemistry and kinetics of combustion processes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 237-PHYS BP U210 EP U210 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500713 ER PT J AU Mertz, CJ Bates, JK AF Mertz, CJ Bates, JK TI Dynamic light scattering of waste form colloids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 091-IEC BP U680 EP U680 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402167 ER PT J AU Michael, JV AF Michael, JV TI Experimental studies of thermal unimolecular reactions using a shock tube. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RI Michael, Joe/E-3907-2010 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 143-PHYS BP U184 EP U184 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500620 ER PT J AU Miller, JA AF Miller, JA TI Some critical issues in combustion chemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 173-PHYS BP U193 EP U193 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500650 ER PT J AU Mills, GL Garrett, MA Radcliffe, DE Olson, JJ AF Mills, GL Garrett, MA Radcliffe, DE Olson, JJ TI Effects of carbon quality on transport of PAHs in low organic carbon aquifer sediments. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC USA. Univ Georgia, Dept Soil & Crop Sci, Athens, GA 30602 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 070-GEOC BP U638 EP U638 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402041 ER PT J AU Miranda, P Shen, YR AF Miranda, P Shen, YR TI Alkyl chain conformation at liquid interfaces. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 151-PHYS BP U186 EP U186 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500628 ER PT J AU Mirzadeh, S Knapp, R AF Mirzadeh, S Knapp, R TI Auger electron emitters for intracellular therapy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Nucl Med Grp, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 018-NUCL BP U933 EP U933 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403008 ER PT J AU Moltz, DM Cerny, J Joosten, R Larimer, RM Lyneis, C Norman, EB O'Neil, J Powell, J Van Brocklin, H Xie, D Haustein, P AF Moltz, DM Cerny, J Joosten, R Larimer, RM Lyneis, C Norman, EB O'Neil, J Powell, J Van Brocklin, H Xie, D Haustein, P TI A coupled gas-jet to ECR ion-source system for production of radioactive beams. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Berkeley Lab, Berkeley, CA USA. Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 142-NUCL BP U970 EP U970 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403130 ER PT J AU Montoya, AJ Gruetzmacher, KM Foxx, CL Rogers, PZ AF Montoya, AJ Gruetzmacher, KM Foxx, CL Rogers, PZ TI Documentation of acceptable knowledge for LANL Plutonium Facility tru waste streams. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 054-IEC BP U670 EP U670 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402130 ER PT J AU Moriarty, NW Frenklach, M Brown, NJ AF Moriarty, NW Frenklach, M Brown, NJ TI Hydrogen transfer channel of acetylene addition to phenyl. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Energy & Environm, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 300-PHYS BP U229 EP U229 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500776 ER PT J AU Morrell, JS Beach, DB Specht, ED Xue, ZLB AF Morrell, JS Beach, DB Specht, ED Xue, ZLB TI Epitaxial films of rare-earth gallates grown on single-crystal oxide substrates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RI Specht, Eliot/A-5654-2009 OI Specht, Eliot/0000-0002-3191-2163 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 522-INOR BP U851 EP U851 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402751 ER PT J AU Morss, LR Jensen, MP Ensor, DD AF Morss, LR Jensen, MP Ensor, DD TI Stability of lanthanide and actinide complexes of a hexadentate nitrogen donor. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Tennessee Technol Univ, Dept Chem, Cookeville, TN 38505 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 027-NUCI BP U936 EP U936 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403017 ER PT J AU Mukerjee, S Yang, XQ McBreen, J AF Mukerjee, S Yang, XQ McBreen, J TI Synchrotron based in situ x-ray techniques in the study of LiMn2O4 type spinel materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 296-COLL BP U489 EP U490 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401577 ER PT J AU Najm, HN AF Najm, HN TI Detailed chemical response of unsteady premixed flames. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 065-PHYS BP U162 EP U163 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500542 ER PT J AU Nenoff, TM Balmer, ML Navrotsky, A Thoma, SG Krumhansl, JL Miller, J AF Nenoff, TM Balmer, ML Navrotsky, A Thoma, SG Krumhansl, JL Miller, J TI Stability and phase studies for CST's as alternative waste forms. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Davis, CA 95616 USA. Pacific NW Lab, Richland, WA 99352 USA. Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 120-IEC BP U688 EP U688 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402197 ER PT J AU Newton, MD AF Newton, MD TI Evaluation of energy quantities governing electron transfer kinetics: The role of theory and computation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 259-PHYS BP U216 EP U217 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500735 ER PT J AU Nicholas, JA Dupuis, M Harrison, RJ Kendall, RA Straatsma, TP AF Nicholas, JA Dupuis, M Harrison, RJ Kendall, RA Straatsma, TP TI Next generation computational chemistry software targeting the DOE's environmental mission. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 392-PHYS BP U265 EP U265 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500868 ER PT J AU Nicholas, JB AF Nicholas, JB TI Theoretical and experimental NMR studies of zeolite catalysis. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 036-CATL BP U479 EP U479 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501554 ER PT J AU North, SW Marr, AJ Furlan, A Sears, TJ Hall, GE AF North, SW Marr, AJ Furlan, A Sears, TJ Hall, GE TI Unimolecular pathways in the dissociation of acetyl cyanide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RI Sears, Trevor/B-5990-2013; North, Simon/G-5054-2012 OI Sears, Trevor/0000-0002-5559-0154; North, Simon/0000-0002-0795-796X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 060-PHYS BP U161 EP U161 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500537 ER PT J AU Paul, PH AF Paul, PH TI The effects of unsteadyness on the structure of premixed flames. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 404-PHYS BP U269 EP U269 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500880 ER PT J AU Peden, CHF Ismagilov, IZ Kim, YJ Herman, GS Gao, Y Chambers, SA AF Peden, CHF Ismagilov, IZ Kim, YJ Herman, GS Gao, Y Chambers, SA TI The titration of cation sites on an oxide surface by adsorbed water: D2O adsorption on Fe3O4(001). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 408-PHYS BP U270 EP U270 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500884 ER PT J AU Pedron, D Bozio, R Schlueter, JA Kelly, ME Kini, AM Williams, JM AF Pedron, D Bozio, R Schlueter, JA Kelly, ME Kini, AM Williams, JM TI Electron-phonon coupling in kappa-(BEDT-TTF)(2)X organic superconductors studied by Raman scattering spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Padua, Dept Phys Chem, I-35131 Padua, Italy. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RI Bozio, Renato/E-9066-2012 OI Bozio, Renato/0000-0001-7274-9190 NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 066-IEC BP U673 EP U673 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402142 ER PT J AU Percival, PW Brodovitch, JC Ghandi, K Addison-Jones, B Schuth, J AF Percival, PW Brodovitch, JC Ghandi, K Addison-Jones, B Schuth, J TI Chemistry in supercritical water probed by positive muons SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada. Simon Fraser Univ, TRIUMF, Burnaby, BC V5A 1S6, Canada. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 215-PHYS BP U204 EP U204 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500692 ER PT J AU Perry, DL Rivera, A Espinosa, L AF Perry, DL Rivera, A Espinosa, L TI Mid and near infrared spectral studies of high pH iron-EDTA systems. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 366-INOR BP U806 EP U806 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402593 ER PT J AU Perry, DL Gatti, RC Carpenter, SA Seaborg, GT Ebbinghaus, BB Van Konynenburg, R Brummond, WA Farmer, JC Yang, N AF Perry, DL Gatti, RC Carpenter, SA Seaborg, GT Ebbinghaus, BB Van Konynenburg, R Brummond, WA Farmer, JC Yang, N TI Gamma ray spectroscopy of actinide-containing multi-metal oxide ceramics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, GT Seaborg Inst Transactinium Sci, Berkeley, CA 94720 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Sandia Natl Labs, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 235-INOR BP U770 EP U770 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402463 ER PT J AU Perry, DL AF Perry, DL TI Application of x-ray photoelectron and Auger spectroscopy to superconducting materials. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 135-IEC BP U692 EP U692 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402212 ER PT J AU Pesiri, D Morita, D David, S Buelow, S Martinez, R Ding, Z Walker, T Tumas, W AF Pesiri, D Morita, D David, S Buelow, S Martinez, R Ding, Z Walker, T Tumas, W TI Homogeneous catalysis in dense phase carbon dioxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 044-PHYS BP U157 EP U157 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500521 ER PT J AU Petersen, CP Gordon, MS AF Petersen, CP Gordon, MS TI On the number of water molecules necessary to solvate sodium chloride: Effective fragment modeling of NaCl(H2O)n clusters. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA. Grinnell Coll, Grinnell, IA 50112 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 510-CHED BP U322 EP U323 PN 1 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401023 ER PT J AU Pitz, WJ Curran, HJ Marinov, NM Westbrook, CK AF Pitz, WJ Curran, HJ Marinov, NM Westbrook, CK TI Chemical kinetics modeling of hydrocarbon oxidation with applications in air toxic formation from flames and autoignition related to internal combustion engines SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 402-PHYS BP U268 EP U268 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500878 ER PT J AU Pohl, P Waters, RD Cheng, WC Wheeler, T AF Pohl, P Waters, RD Cheng, WC Wheeler, T TI Mixed low-level waste forms performance at Savannah River and Hanford. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 149-IEC BP U696 EP U696 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402226 ER PT J AU Ponomarev, AL Durning, CL Sewell, TD AF Ponomarev, AL Durning, CL Sewell, TD TI Monte Carlo simulation of flexible polymers at an attractive surface. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Columbia Univ, Dept Appl Phys, New York, NY 10027 USA. Columbia Univ, Dept Chem Engn, New York, NY 10027 USA. Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 188-PMSE BP U338 EP U338 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501085 ER PT J AU Poskanzer, AM AF Poskanzer, AM TI Directed and elliptic flow in 158 GeV/A Pb+Pb collisions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 053-NUCL BP U944 EP U944 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403042 ER PT J AU Pruski, M Fernandez, C Lang, DP Amoureux, JP AF Pruski, M Fernandez, C Lang, DP Amoureux, JP TI Measurements of interatomic connectivities in molecular sieves using MQMAS-based methods. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. CNRS, URA 801, Lab Dynam & Struct Mat Mol, F-59655 Villeneuve Dascq, France. RI fernandez, christian/C-3158-2008 OI fernandez, christian/0000-0002-5476-3148 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 046-CATL BP U483 EP U483 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501564 ER PT J AU Qiu, Y Martino, A Kawola, J Shelnutt, JA AF Qiu, Y Martino, A Kawola, J Shelnutt, JA TI Porphyrins as ionophores for liquid-membrane metal ion extraction. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Catalysis & Chem Technol Dept, Albuquerque, NM 87185 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 228-INOR BP U768 EP U768 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402456 ER PT J AU Quagliano, JR Doorn, S Willis, D Rodriguez, M AF Quagliano, JR Doorn, S Willis, D Rodriguez, M TI Chemometric analysis of icp-aes spectroscopic data collected on acidic aqueous samples mimicking nist plain carbon steels. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 013-ANYL BP U64 EP U64 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400198 ER PT J AU Radford, DC AF Radford, DC TI Four-fold coincidence data analysis in radware. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RI radford, David/A-3928-2015 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 079-NUCL BP U951 EP U951 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403068 ER PT J AU Rahimian, K Loy, DA Wheeler, DR AF Rahimian, K Loy, DA Wheeler, DR TI Synthesis and characterization of novel high molecular weight silsesquioxanes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 249-POLY BP U419 EP U419 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501360 ER PT J AU Rasmussen, JO Chacon, AD AF Rasmussen, JO Chacon, AD TI Two-pion correlation studies at the Bevalac. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 071-NUCL BP U949 EP U949 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403060 ER PT J AU Rasmussen, JO AF Rasmussen, JO TI Molecular analogies in nuclear spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 002-NUCL BP U929 EP U929 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402992 ER PT J AU Rasmussen, PG Hopkins, AR Basheer, RA Annis, BK Wignall, GD AF Rasmussen, PG Hopkins, AR Basheer, RA Annis, BK Wignall, GD TI The effect of dopant counter ion on the conductivity and morphology of polyaniline/nylon blends SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA. Univ Michigan, Ctr Macromol Sci & Engn, Ann Arbor, MI 48109 USA. GM Corp, Ctr Res & Dev, Polymers Dept, Warren, MI 48090 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 013-POLY BP U354 EP U354 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501125 ER PT J AU Reimer, JA Rush, B Cairns, EJ Yahnke, MS AF Reimer, JA Rush, B Cairns, EJ Yahnke, MS TI NMR studies of adsorbates on commercial fuel cell electrodes in an aqueous environment. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA USA. RI Cairns, Elton/E-8873-2012 OI Cairns, Elton/0000-0002-1179-7591 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 025-CATL BP U476 EP U476 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501543 ER PT J AU Reviol, W Riedinger, LL Smith, BH Carpenter, MP Fischer, SM Janssens, RVF Khoo, TL Lauritsen, T Nisius, DT Moore, EF Fallon, P AF Reviol, W Riedinger, LL Smith, BH Carpenter, MP Fischer, SM Janssens, RVF Khoo, TL Lauritsen, T Nisius, DT Moore, EF Fallon, P TI Superdeformation at the South-West shore of the mass 190 island. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 N Carolina State Univ, Raleigh, NC 27695 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 044-NUCL BP U941 EP U941 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403033 ER PT J AU Rice, SF Wickham, JJ AF Rice, SF Wickham, JJ TI Pressure dependence of H2 Raman linewidths and positions in supercritical water and carbon dioxide. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 015-PHYS BP U149 EP U149 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500492 ER PT J AU Riley, MA Pfohl, J Brown, TB Hartley, DJ Archer, DE Sheline, R Devlin, M LaFosse, DR Lerma, F Sarantites, DG Clark, RM Fallon, P Joss, DT Nolan, PJ Paul, ES Simpson, J Hibbert, IM O'Brien, N Wadsworth, R Sun, Y AF Riley, MA Pfohl, J Brown, TB Hartley, DJ Archer, DE Sheline, R Devlin, M LaFosse, DR Lerma, F Sarantites, DG Clark, RM Fallon, P Joss, DT Nolan, PJ Paul, ES Simpson, J Hibbert, IM O'Brien, N Wadsworth, R Sun, Y TI The A=135 superdeformed region: New structures and understanding. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington Univ, St Louis, MO 63130 USA. ORNL, UTK, Oak Ridge, TN USA. RI Devlin, Matthew/B-5089-2013 OI Devlin, Matthew/0000-0002-6948-2154 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 081-NUCL BP U952 EP U952 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403070 ER PT J AU Robinson, MA Christensen, DC AF Robinson, MA Christensen, DC TI Development and implementation of the plutonium disposition methodology at TA-55 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 132-IEC BP U691 EP U691 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402209 ER PT J AU Rohlfing, CM AF Rohlfing, CM TI Quantum chemical applications in combustion spectroscopy and dynamics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 141-PHYS BP U184 EP U184 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500618 ER PT J AU Rudolph, D AF Rudolph, D TI Nuclear structure near 56NI: Proton decay of the deformed 2nd minimum in 58CU. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. Washington Univ, St Louis, MO 63130 USA. Univ Tennessee, Knoxville, TN 37996 USA. Univ Munich, D-85748 Garching, Germany. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 095-NUCL BP U956 EP U956 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403084 ER PT J AU Ruscic, B Litorja, M AF Ruscic, B Litorja, M TI Bond dissociation energies via photoionization mass spectrometric measurements of transient species. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RI Ruscic, Branko/A-8716-2008 OI Ruscic, Branko/0000-0002-4372-6990 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 296-PHYS BP U227 EP U228 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500772 ER PT J AU Salmeron, M Xu, L Luna, M Melman, N Rieutord, F AF Salmeron, M Xu, L Luna, M Melman, N Rieutord, F TI Nanometer scale studies of water adsorption on ionic crystals, its effect on the hydration and mobility of surface ions, step motion and deliquescence. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Div Mat Sci, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Luna, Monica/M-1792-2014 OI Luna, Monica/0000-0002-7104-0726 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 181-PHYS BP U195 EP U195 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500658 ER PT J AU Samara, M Loy, DA AF Samara, M Loy, DA TI Shrinkage and recyclability of poly(1,2-ethylene-bis(dimethylsiloxane)). SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 252-POLY BP U419 EP U420 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501363 ER PT J AU Sasaki, DY Padilla, BE AF Sasaki, DY Padilla, BE TI Selective detection of mercuric ion by fluorescent liposomes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 038-ANYL BP U71 EP U71 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400222 ER PT J AU Schenter, GK McCarthy, MI Rehr, JJ AF Schenter, GK McCarthy, MI Rehr, JJ TI The structure of a water-oxide interface and the prediction of X-ray absorption fine structure spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Univ Washington, Dept Phys, Seattle, WA 98195 USA. RI Schenter, Gregory/I-7655-2014 OI Schenter, Gregory/0000-0001-5444-5484 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 411-PHYS BP U271 EP U271 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500887 ER PT J AU Schlyer, DJ Firouzbakht, M Ferrieri, R Wolf, AP AF Schlyer, DJ Firouzbakht, M Ferrieri, R Wolf, AP TI Development of cyclotron targetry for PET. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 148-NUCL BP U971 EP U971 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403136 ER PT J AU Schlyer, DJ Firouzbakht, ML AF Schlyer, DJ Firouzbakht, ML TI Radioisotope production on a low energy, high beam current linear accelerator. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 117-NUCL BP U962 EP U962 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403105 ER PT J AU Schultz, AJ AF Schultz, AJ TI Applications of pulsed neutron diffraction in inorganic chemistry. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 385-INOR BP U812 EP U812 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402614 ER PT J AU Schultz, IR Hayton, WL AF Schultz, IR Hayton, WL TI Predicting the toxicokinetics of trifluralin in rainbow trout using clearance-volume pharmacokinetic models. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Battelle Mem Inst, PNNL, Richland, WA 99352 USA. Ohio State Univ, Coll Pharm, Columbus, OH 43210 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 105-AGRO BP U55 EP U55 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400179 ER PT J AU Sears, TJ Marr, AJ Chang, BC North, SW Fockenberg, C Hall, GE AF Sears, TJ Marr, AJ Chang, BC North, SW Fockenberg, C Hall, GE TI High resolution spectroscopy of methylene and other simple carbenes: New data for comparing to high level calculations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11793 USA. RI Sears, Trevor/B-5990-2013; North, Simon/G-5054-2012 OI Sears, Trevor/0000-0002-5559-0154; North, Simon/0000-0002-0795-796X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 005-PHYS BP U146 EP U146 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500482 ER PT J AU Sewell, TD AF Sewell, TD TI Monte Carlo simulation of the hydrostatic compression of RDX and beta-HMX. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 205-COMP BP U560 EP U560 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401797 ER PT J AU Sewell, TD Thompson, DL AF Sewell, TD Thompson, DL TI Surface collision-induced activation of gas-phase RDX molecules. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oklahoma State Univ, Dept Chem, Stillwater, OK 74078 USA. Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 078-PHYS BP U166 EP U166 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500555 ER PT J AU Shaltout, RM Loy, DA AF Shaltout, RM Loy, DA TI Polymerization of the cis and trans isomers of 1,4-bis(triethoxysilyl)-2-butene and comparison of their structural properties. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Encapsulants & Foams Dept, Albuquerque, NM 87185 USA. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 049-COLL BP U418 EP U418 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401335 ER PT J AU Shepard, R Kedziora, GS AF Shepard, R Kedziora, GS TI Analytic energy gradients of multireference configuration interaction wave functions. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 295-PHYS BP U227 EP U227 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500771 ER PT J AU Sieger, MT Simpson, WC Orlando, TM AF Sieger, MT Simpson, WC Orlando, TM TI Electron-stimulated desorption of D2O ice: Surface structure and electronic excitations. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Sieger, Matthew/B-4261-2011 OI Sieger, Matthew/0000-0001-7387-3660 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 008-PHYS BP U147 EP U147 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500485 ER PT J AU Simpson, LJ AF Simpson, LJ TI Accelerated test behavior of the glass-zeolite ceramic waste form SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 118-IEC BP U687 EP U687 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402195 ER PT J AU Singh, D Wagh, AS Strain, RV Jeong, SY AF Singh, D Wagh, AS Strain, RV Jeong, SY TI An overview of ceramicrete (TM) technology for stabilization of low-level mixed wastes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 137-IEC BP U693 EP U693 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402214 ER PT J AU Singh, S Sasaki, DY AF Singh, S Sasaki, DY TI Nitrogen dioxide gas detection using optically responsive thin films SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 039-ANYL BP U71 EP U71 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400223 ER PT J AU Skodje, RT AF Skodje, RT TI A method of simplifying complex kinetic systems based on attracting low-dimensional manifolds. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Colorado, Dept Chem, Boulder, CO 80309 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 405-PHYS BP U269 EP U269 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500881 ER PT J AU Smith, AG Billowes, J Durell, JL Phillips, WR Simpson, G Freeman, SJ Leddy, M Manch, U Jungclaus, A Teich, C Schulz, N Gall, BJP Hoellinger, F Pasteur, UL Ahmad, I AF Smith, AG Billowes, J Durell, JL Phillips, WR Simpson, G Freeman, SJ Leddy, M Manch, U Jungclaus, A Teich, C Schulz, N Gall, BJP Hoellinger, F Pasteur, UL Ahmad, I TI Fission-fragment gamma spectrometry with large arrays. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Strasbourg 1, F-67070 Strasbourg, France. ANL, Argonne, IL USA. RI Freeman, Sean/B-1280-2010 OI Freeman, Sean/0000-0001-9773-4921 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 049-NUCL BP U943 EP U943 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403038 ER PT J AU Smith, C AF Smith, C TI Process considerations while implementing a Waste Management System. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 056-IEC BP U671 EP U671 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402136 ER PT J AU Smith, CA Martinez, MA Veirs, DK AF Smith, CA Martinez, MA Veirs, DK TI Quantitative analysis of gallium in plutonium using laser induced breakdown spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Div Nucl Mat Technol, Adv Technol Grp NMT6, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 024-NUCL BP U935 EP U935 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403014 ER PT J AU Smith, RD Bruce, JE Udseth, HR Gorshkov, M Tolic, LP Anderson, GA Hofstadler, SA AF Smith, RD Bruce, JE Udseth, HR Gorshkov, M Tolic, LP Anderson, GA Hofstadler, SA TI High performance Fourier transform ion cyclotron resonance mass spectrometry of large biopolymers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RI Gorshkov, Mikhail/E-8522-2010; Smith, Richard/J-3664-2012; Gorshkov, Mikhail/N-4984-2013 OI Smith, Richard/0000-0002-2381-2349; Gorshkov, Mikhail/0000-0001-9572-3452 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 130-ANYL BP U97 EP U97 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400312 ER PT J AU Smith, RS Huang, C Kimmel, GA Stevenson, KP Kay, BD AF Smith, RS Huang, C Kimmel, GA Stevenson, KP Kay, BD TI Thermodynamic continuity and mobility in amorphous solid water: Evidence for the existence of supercooled liquid water at 150 K. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 038-PHYS BP U155 EP U155 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500515 ER PT J AU Spence, RD Mattus, CH AF Spence, RD Mattus, CH TI Development of a robust grout for mixed waste sludges SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. RI Mattus, Catherine/E-5591-2017 OI Mattus, Catherine/0000-0002-4574-1588 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 138-IEC BP U693 EP U693 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402215 ER PT J AU Srivastava, SC Atkins, HL Meinken, GE Mausner, LF AF Srivastava, SC Atkins, HL Meinken, GE Mausner, LF TI TIN-117m (4+) chelates for treatment of metastatic bone pain. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 037-NUCL BP U939 EP U939 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403027 ER PT J AU Suh, S Hoffman, DM AF Suh, S Hoffman, DM TI Chemical vapor deposition of zinc and tin oxide films from metalorganic precursors. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Houston, Dept Chem, Houston, TX 77204 USA. Univ Houston, Mat Res Sci & Engn Ctr, Houston, TX 77204 USA. Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 283-INOR BP U783 EP U783 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402511 ER PT J AU Sullivan, JP AF Sullivan, JP TI Two-particle correlations from CERN experiment NA44. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 069-NUCL BP U949 EP U949 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403058 ER PT J AU Taatjes, CA Farrell, JT AF Taatjes, CA Farrell, JT TI Infrared absorption probing of chemical kinetics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 145-PHYS BP U185 EP U185 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500622 ER PT J AU Takahashi, K Fujii, K Sawamura, S Jonah, CD AF Takahashi, K Fujii, K Sawamura, S Jonah, CD TI Density dependence of the Stokes shift in polar and non-polar supercritical fluids. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Hokkaido Univ, Div Quantum Energy Engn, Sapporo, Hokkaido 060, Japan. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 101-PHYS BP U173 EP U173 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500578 ER PT J AU Tan, H Zhang, N Yeung, ES AF Tan, H Zhang, N Yeung, ES TI On-line coupling DNA amplification reactions with capillary array electrophoresis through fully automated microfluidics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 037-ANYL BP U71 EP U71 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400221 ER PT J AU Taylor, BR Kauzlarich, SM Lee, HWH Delgado, GR AF Taylor, BR Kauzlarich, SM Lee, HWH Delgado, GR TI Synthesis of germanium nanoclusters for electroluminescent devices from a zintl salt. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Davis, CA 95616 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 114-PHYS BP U176 EP U177 PN 2 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500591 ER PT J AU Tesmer, JR Maggiore, CJ AF Tesmer, JR Maggiore, CJ TI A review of the direct determination of light elements by high-energy resonant backscattering. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 138-NUCL BP U968 EP U968 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403126 ER PT J AU Thompson, RK Hilsenbeck, SJ McCarley, RE Schrader, GL AF Thompson, RK Hilsenbeck, SJ McCarley, RE Schrader, GL TI Hydroprocessing catalysis by new reduced ternary molybdenum sulfides. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem Engn, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 053-PETR BP U128 EP U128 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500434 ER PT J AU Tomczyk, NA Winans, RE Shinn, JH Robinson, RC AF Tomczyk, NA Winans, RE Shinn, JH Robinson, RC TI Results of treatment on acid content in a California heavy crude. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Chevron Res & Technol Co, Richmond, CA 94802 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 014-PETR BP U118 EP U118 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500395 ER PT J AU Van Hove, MA AF Van Hove, MA TI The surface structure of ice at 90K, and implications at other temperatures. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 034-PHYS BP U154 EP U154 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500511 ER PT J AU Van Konynenburg, RA Ebbinghaus, BB Shaw, HF AF Van Konynenburg, RA Ebbinghaus, BB Shaw, HF TI Formulation of ceramic for plutonium immobilization SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Shaw, Henry/B-6445-2012 OI Shaw, Henry/0000-0003-0681-5430 NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 104-IEC BP U684 EP U684 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402181 ER PT J AU Van Patten, PG Klimov, VI McBranch, DW Donohoe, RJ AF Van Patten, PG Klimov, VI McBranch, DW Donohoe, RJ TI Self-assembled, light-harvesting multilayer films prepared via electrostatic layer-by-layer deposition. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87544 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 046-COLL BP U418 EP U418 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401332 ER PT J AU Volkow, ND AF Volkow, ND TI Imaging the biochemical effects of drugs in the human brain. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 137-NUCL BP U968 EP U968 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403125 ER PT J AU Von Dreele, RB AF Von Dreele, RB TI Protein structures by powder diffraction? SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 195-INOR BP U759 EP U759 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402423 ER PT J AU Vorres, KS AF Vorres, KS TI Some stories of fuel chemistry research. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 035-FUEL BP U602 EP U602 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401929 ER PT J AU Wallen, SL Fulton, JL AF Wallen, SL Fulton, JL TI Supercritical fluid solvation structure of an organometallic complex. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 111-ANYL BP U92 EP U92 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414400294 ER PT J AU Wang, H Palmer, RA Graff, DK Schoonover, JR AF Wang, H Palmer, RA Graff, DK Schoonover, JR TI Dynamic opto-rheological study of estane copolymers using step-scan ftir spectroscopy. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 013-PMSE BP U283 EP U283 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500914 ER PT J AU Wasielewski, MR Marsh, EM Debreczeny, MP Gosztola, D AF Wasielewski, MR Marsh, EM Debreczeny, MP Gosztola, D TI Ultrafast electron transfer reactions in donor-acceptor arrays as routes to a molecular switch. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RI Gosztola, David/D-9320-2011 OI Gosztola, David/0000-0003-2674-1379 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 287-PHYS BP U225 EP U225 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500763 ER PT J AU Waters, R Pohl, P Gruebel, M Cheng, WC Langkopf, B AF Waters, R Pohl, P Gruebel, M Cheng, WC Langkopf, B TI Disposability of mixed low-level waste at Hanford and Envirocare of Utah. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 139-IEC BP U693 EP U693 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402216 ER PT J AU Webb, OF Krichinsky, AM Mirzadeh, S Patton, BD AF Webb, OF Krichinsky, AM Mirzadeh, S Patton, BD TI Oak Ridge National Laboratory alpha emitter program-production of thorium-229 from uranium-233. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 019-NUCL BP U934 EP U934 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403009 ER PT J AU Weber, WJ Ewing, RC Meldrum, A AF Weber, WJ Ewing, RC Meldrum, A TI Radiation effects in nuclear waste ceramics. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Univ Michigan, Ann Arbor, MI 48109 USA. Pacific NW Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 093-IEC BP U681 EP U681 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402169 ER PT J AU Weinhold, JD Curro, JG AF Weinhold, JD Curro, JG TI Self-consistent prism studies of polyolefin blends. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 134-PMSE BP U321 EP U321 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414501032 ER PT J AU Wilson, AK Peterson, KA Dunning, TH AF Wilson, AK Peterson, KA Dunning, TH TI Application of the correlation consistent basis sets to third row dimers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Theory Modeling & Simulat Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 092-COMP BP U530 EP U530 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401684 ER PT J AU Winter, NW Lee, MA AF Winter, NW Lee, MA TI Structure-activity relationships for aromatic amine isomers. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Dept Phys, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 041-COMP BP U516 EP U516 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414401633 ER PT J AU Wishart, JF Hamada, T Sakaki, S Fujita, E Brunschwig, B AF Wishart, JF Hamada, T Sakaki, S Fujita, E Brunschwig, B TI Enantioselective electron transfer reactions of helical Ru(II) complexes. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Kumamoto Univ, Fac Engn, Dept Appl Chem, Kumamoto 860, Japan. RI Fujita, Etsuko/D-8814-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 336-PHYS BP U239 EP U239 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500812 ER PT J AU Wood, DJ AF Wood, DJ TI Radiolytic mechanisms in the degradation of 4 ',4 '(5 '),di-(t-butylcyclohexo)-18-crown-6 in a hydrocarbon solvent. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 042-IEC BP U667 EP U667 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402121 ER PT J AU Wu, CJ Ree, F AF Wu, CJ Ree, F TI First-principles and semi-empirical molecular dynamics study of pentaerythritol tetranitrate (PETN) decomposition. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 091-PHYS BP U170 EP U170 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500568 ER PT J AU Yan, SG Brunschwig, B Creutz, C Fujita, E Sutin, N AF Yan, SG Brunschwig, B Creutz, C Fujita, E Sutin, N TI Reversible formation of a rhodium(III) dihydride complex from rhodium(I) and dihydrogen. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RI Fujita, Etsuko/D-8814-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 147-INOR BP U746 EP U746 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402375 ER PT J AU Yang, CY Gray, SK Davis, MJ Goldfield, EM Balint-Kurti, GG AF Yang, CY Gray, SK Davis, MJ Goldfield, EM Balint-Kurti, GG TI Full dimensional quantum studies of highly excited bound and resonance states of H2O and HCO. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Chem, Theoret Chem Grp, Argonne, IL 60439 USA. Wayne State Univ, Dept Chem, Detroit, MI 48202 USA. Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 294-PHYS BP U227 EP U227 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500770 ER PT J AU Yang, LR Hay, BP AF Yang, LR Hay, BP TI An MM3 model for complexes of alkali and alkaline earth metals with aliphatic crown ethers, benzocrown ethers, calixarenes, and spherands. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 295-INOR BP U786 EP U786 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402523 ER PT J AU Yoder, LM Barker, JR Lorenz, KT Chandler, DW AF Yoder, LM Barker, JR Lorenz, KT Chandler, DW TI Two-dimensional imaging of pyrazine recoil from the photodissociation of pyrazine-Ar van der Waals complexes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA. Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. RI Barker, John/F-5904-2012 OI Barker, John/0000-0001-9248-2470 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 075-PHYS BP U165 EP U165 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500552 ER PT J AU Zhang, J Zhang, J Jia, SL Ma, JG Shelnutt, JA AF Zhang, J Zhang, J Jia, SL Ma, JG Shelnutt, JA TI Conformations of the hemes in protein crystal structures decomposed in terms of the macrocycle normal coordinates. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Catalysis & Chem Technol Dept, Albuquerque, NM 87185 USA. Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 309-INOR BP U790 EP U790 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414402537 ER PT J AU Zhong, GM Guiochon, G AF Zhong, GM Guiochon, G TI Simulated moving bed chromatography SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Praxair Inc, Process & System R&D, Tonawanda, NY 14151 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem & Analytical Sci, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 125-ANYL BP U96 EP U96 PN 1 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA911 UT WOS:000072414403139 ER PT J AU Zygmunt, SA Curtiss, LA Iton, LE AF Zygmunt, SA Curtiss, LA Iton, LE TI Computational studies of catalytic cracking in large cluster models of zeolite H-ZSM-5. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1998 VL 215 MA 368-PHYS BP U258 EP U258 PN 2 PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA ZA912 UT WOS:000072414500844 ER PT J AU Ustinov, VM Zhukov, AE Egorov, AY Kovsh, AR Zaitsev, SV Gordeev, NY Kopchatov, VI Ledentsov, HN Tsatsul'nikov, AF Volovik, BV Kop'ev, PS Alferov, ZI Ruvimov, SS Liliental-Weber, Z Bimberg, D AF Ustinov, VM Zhukov, AE Egorov, AY Kovsh, AR Zaitsev, SV Gordeev, NY Kopchatov, VI Ledentsov, HN Tsatsul'nikov, AF Volovik, BV Kop'ev, PS Alferov, ZI Ruvimov, SS Liliental-Weber, Z Bimberg, D TI Low threshold quantum dot injection laser emitting at 1.9 mu m SO ELECTRONICS LETTERS LA English DT Article ID ROOM-TEMPERATURE OPERATION AB Self-organised InAs quantum dots inserted in an (In, Ga)As matrix lattice matched to an InP substrate are used as an active region in an injection laser. Low threshold (11.4A/cm(2)) lasing at 1.894 mu m (77K) via the states of the quantum dots is obtained. A material gain of the order of 10(4)cm(-1) is estimated. C1 AF Ioffe Physicotech Inst, St Petersburg 194021, Russia. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany. RP Ustinov, VM (reprint author), AF Ioffe Physicotech Inst, Politekhnicheskaya 26, St Petersburg 194021, Russia. RI Liliental-Weber, Zuzanna/H-8006-2012; Zhukov, Alexey/A-5523-2014; Tsatsulnikov, Andrey/A-9150-2014; Ustinov, Viktor/J-3545-2013; Gordeev, Nikita/M-8131-2013; Egorov, Anton/B-1267-2014 OI Zhukov, Alexey/0000-0002-4579-0718; Gordeev, Nikita/0000-0002-9919-4794; Egorov, Anton/0000-0002-0789-4241 NR 9 TC 45 Z9 45 U1 0 U2 1 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD APR 2 PY 1998 VL 34 IS 7 BP 670 EP 672 DI 10.1049/el:19980373 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA ZK102 UT WOS:000073285100048 ER PT J AU Jacob, J Espenson, JH AF Jacob, J Espenson, JH TI Selective C-H bond activation of arenes catalyzed by methylrhenium trioxide SO INORGANICA CHIMICA ACTA LA English DT Article DE catalysis; oxidation of arenes; rhenium complexes; methyl complexes; trioxide complexes ID MAIN-GROUP ELEMENTS; HYDROGEN-PEROXIDE; TRANSITION-METALS; MULTIPLE BONDS; OXIDATION; METHYLTRIOXORHENIUM; QUINONES; PHENOLS; NAPHTHALENES; EPOXIDATION AB Arenes, in glacial acetic acid, are oxidized to para-benzoquinones by hydrogen peroxide when methylrhenium trioxide (CH3ReO3 or MTO) is used as a catalyst. In some cases an intermediate hydroquinone was also obtained in lower yield. Oxidation of the methyl side chains of various methylbenzenes did not occur. The active catalyst species are the previously-characterized eta(2)-peroxorhenium complexes, CH3Re(O)(2)(eta(2)-O-2) and CH3Re(O)(eta(2)-O-2)(2)(H2O). Separate tests showed that hydroquinones and phenols are oxidized by H2O2-MTO more rapidly than the simple arenes; in the proposed mechanism they are intermediate products. Higher conversions were found for the more highly-substituted arenes, consistent with their being the most reactive species toward the electrophillically-active peroxide bound to rhenium. High conversions of the less substituted members of the series were not achieved, reflecting concurrent deactivation of MTO-peroxide, a process of greater import for the more slowly-reacting substrates. (C) 1998 Elsevier Science S.A. C1 Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA. RP Espenson, JH (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA. NR 38 TC 24 Z9 24 U1 3 U2 15 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0020-1693 J9 INORG CHIM ACTA JI Inorg. Chim. Acta PD APR 2 PY 1998 VL 270 IS 1-2 BP 55 EP 59 DI 10.1016/S0020-1693(97)05823-4 PG 5 WC Chemistry, Inorganic & Nuclear SC Chemistry GA ZD760 UT WOS:000072720900009 ER PT J AU Peterson, KA Xantheas, SS Dixon, DA Dunning, TH AF Peterson, KA Xantheas, SS Dixon, DA Dunning, TH TI Predicting the proton affinities of H2O and NH3 SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID AMMONIUM ION NH4+; CORRELATED MOLECULAR CALCULATIONS; INFRARED-LASER SPECTROSCOPY; QUARTIC FORCE-FIELD; GAUSSIAN-BASIS SETS; HIGH-RESOLUTION; WAVE-FUNCTIONS; HYDRONIUM ION; H3O+; INVERSION AB High-level ab initio molecular orbital theory has been used to predict the proton affinities of H2O and NH3 at the CCSD(T) level with con-elation-consistent basis sets through augmented quintuple-zeta for the former and augmented quadruple-zeta for the latter. Diffuse functions have been shown to yield faster convergence to the complete basis set limit for the prediction of highly accurate proton affinities. For these two systems, core-valence correlation effects are small, 0.13 kcal/mol, and were obtained from calculations with core-valence, correlation-consistent basis sets. The electronic component of the proton affinities are 171.56 kcal/mol for H2O and 211.97 kcal/mol for NH3. The zero-point vibrational corrections were taken from experimental values where available and from scaled theoretical values otherwise. The final proton affinity (PA) values at 298 K are PA(H2O) = 165.1 +/- 0.3 kcal/mol and PA(NH3) = 204.1 +/- 0.3 kcal/mol as compared to experimental values of PA(H2O) = 166.5 +/- 1 kcal/mol and PA(NH3) = 204 +/- 1 kcal/mol. The calculated values together with our estimated error limits suggest that the experimental value for H2O is too high by 1.5 kcal/mol. C1 Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. Washington State Univ, Dept Chem, Richland, WA 99352 USA. RP Dixon, DA (reprint author), Pacific NW Lab, Environm Mol Sci Lab, POB 999, Richland, WA 99352 USA. RI Xantheas, Sotiris/L-1239-2015 NR 43 TC 110 Z9 110 U1 2 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD APR 2 PY 1998 VL 102 IS 14 BP 2449 EP 2454 DI 10.1021/jp971510r PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA ZG828 UT WOS:000073044100007 ER PT J AU Aswal, VK Goyal, PS Thiyagarajan, P AF Aswal, VK Goyal, PS Thiyagarajan, P TI Small-angle neutron-scattering and viscosity studies of CTAB/NaSal viscoelastic micellar solutions SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID AQUEOUS-SOLUTIONS; CETYLTRIMETHYLAMMONIUM BROMIDE; RHEOLOGICAL PROPERTIES; SURFACTANT SOLUTIONS; RODLIKE MICELLES; LIGHT-SCATTERING; LIVING POLYMER; CTAB SOLUTIONS; SHEAR-FLOW; SYSTEMS AB Micellar solutions of cationic surfactant cetyltrimethylammonium bromide (CTAB) in the presence of sodium salicylate (NaSal) show a viscoelastic behavior. Small-angle neutron-scattering (SANS) and viscosity studies from CTAB/NaSal micellar solutions are reported. Zero-shear viscosity of these solutions as a function of Nasal concentration (C-s), at all the four measured surfactant concentrations (C-d) of 12.5. 25, 50 and 100 mM, show a double-peak behavior. The effect of C-s/C-d on two viscosity mar;ima and a minimum has been examined, and the scaling relations are obtained. SANS experiments have been carried out at different Nasal concentrations, beyond the first viscosity maximum for two surfactant concentrations of 25 and 100 mM. It is found that micelles are rigid rods and their exponential length distribution shows that they behave as living polymers beyond the first viscosity maximum. The micellar structure does not change in the living polymer regime, whereas viscosity varies with increase in Nasal concentration. The variation in viscosity seems to be connected with the change in the intermicelle interactions. C1 Bhabha Atom Res Ctr, Div Solid State Phys, Mumbai 400085, India. Argonne Natl Lab, Argonne, IL 60439 USA. RP Aswal, VK (reprint author), Bhabha Atom Res Ctr, Div Solid State Phys, Mumbai 400085, India. EM sspd@magnum.barc.ernet.in NR 35 TC 135 Z9 137 U1 3 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5647 J9 J PHYS CHEM B JI J. Phys. Chem. B PD APR 2 PY 1998 VL 102 IS 14 BP 2469 EP 2473 DI 10.1021/jp980181f PG 5 WC Chemistry, Physical SC Chemistry GA ZG825 UT WOS:000073043700005 ER PT J AU Grgur, BN Markovic, NM Ross, PN AF Grgur, BN Markovic, NM Ross, PN TI Electrooxidation of H-2, CO, and H-2/CO mixtures on a well-characterized Pt70Mo30 bulk alloy electrode SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID ROTATING-DISK ELECTRODE; PT-RU; CARBON-MONOXIDE; SULFURIC-ACID; SURFACES; PLATINUM; POLYCRYSTALLINE AB The electrochemical oxidation of hydrogen (H-2), carbon monoxide (CO), and their mixtures (500 ppm-2%) on a well-characterized Pt70Mo30 bulk alloy was examined using the rotating disk electrode technique in 0.5 M H2SO4 at 333 K, The electrodes were transferred to and from a UHV chamber, where surface analyses were conducted using a combination of low-energy ion scattering (LEIS), Auger electron spectroscopy (AES), and X-ray photoelectron spectroscopy (XPS). The surface composition of this alloy after sputter-etching and annealing in UHV was slightly enriched in Pt to a composition of Pt77Mo23 The kinetics of H-2 oxidation are not measurably affected by the presence of the Mo in the surface. The shapes of the polarization curves for the oxidation of the H-2/CO mixtures are qualitatively similar to those for the Pt50Ru50 alloy examined previously: a high current-potential slope ica. 0.5 V/dec at low overpotential followed by a transition to a highly active state when the current approaches the diffusion-limiting current; the potential where the transition to the active state occurs decreases with decreasing CO concentration and decreases with increasing temperature; the current in the low-overpotential region is roughly inverse half-order in the CO partial pressure. The current densities in the low-overpotential region an comparable to those on Pt50Ru50 alloy and about a factor Or 50 times those on a pure rt surface, while the anodic stripping of irreversibly adsorbed CO is very different from that on the Pt50Ru50 alloy, with most of the COads being oxidized only above 0.6 V (RHE), there is direct evidence for the oxidation of small amounts of COads in the low-overpotential region of 0.05-0.5 V. The mechanism of action of Mo in the Pt surface in enhancing Hr oxidation in the presence of CO thus appears to be very similar to that of Ru: a reduction in the steady-state coverage of COads on the Pt sites by oxidative removal, freeing Pt sites for H-2 oxidation. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Ross, PN (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. EM pnross@lbl.gov OI Grgur, Branimir/0000-0003-4684-9053 NR 27 TC 166 Z9 171 U1 3 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5647 J9 J PHYS CHEM B JI J. Phys. Chem. B PD APR 2 PY 1998 VL 102 IS 14 BP 2494 EP 2501 DI 10.1021/jp972692s PG 8 WC Chemistry, Physical SC Chemistry GA ZG825 UT WOS:000073043700008 ER PT J AU Mellot, CF Davidson, AM Eckert, J Cheetham, AK AF Mellot, CF Davidson, AM Eckert, J Cheetham, AK TI Adsorption of chloroform in NaY zeolite: A computational and vibrational spectroscopy study SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID X-RAY-DIFFRACTION; CATALYSTS; NMR; HYDROCARBONS; SPECTROMETER; ENERGETICS AB The structure and energetics of chloroform binding sites in NaY zeolite have been studied by energy-minimization calculations and vibrational spectroscopy. A new force field for chlorocarbon-type molecules in zeolites has been developed. Our simulations predict the adsorption of chloroform in the 12-ring window where the hydrogen atom is involved in a hydrogen bond with the framework oxygens. This interaction is clearly revealed by inelastic neutron scattering and Raman spectroscopies, which show a typical softening of the stretching mode (upsilon(1)) and a hardening of the bending mode (upsilon(4)) involving the H atom of the adsorbed chloroform molecule. The overall host-guest interaction energy involves three components that have been identified as being typical of hydrohalocarbon adsorption in zeolites: (i) short-range interactions between chlorine and framework oxygens, (ii) electrostatic interactions between chlorine atoms and accessible Na ions, and (iii) hydrogen bonding with the framework oxygens. C1 Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Cheetham, AK (reprint author), Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. EM cheetham@mrl.ucsb.edu NR 47 TC 58 Z9 58 U1 0 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD APR 2 PY 1998 VL 102 IS 14 BP 2530 EP 2535 DI 10.1021/jp980042y PG 6 WC Chemistry, Physical SC Chemistry GA ZG825 UT WOS:000073043700013 ER PT J AU Sutanto, H Sharma, R Varma, V AF Sutanto, H Sharma, R Varma, V TI The role of exploratory movement in visual servoing without calibration SO ROBOTICS AND AUTONOMOUS SYSTEMS LA English DT Article DE visual servoing; image features; image Jacobian; without calibration ID VISION; FEEDBACK; ROBOT AB The calibration requirements for Visual servoing can make it difficult to apply in many real-world situations. One approach to image-based visual servoing without calibration is to dynamically estimate the image Jacobian and use it as the basis for control. However, with the normal motion of the robot towards the goal, the estimation of the image Jacobian deteriorates over time. We propose the use of additional "exploratory motion" in the direction in which it is most needed, thus considerably improving the estimation of the image Jacobian. We study the role such exploratory motion can play in a visual servoing task. Simulations and experiments with a 6-DOF robot are used to verify the practical feasibility of the approach. (C) 1998 Elsevier Science B.V. C1 Penn State Univ, Dept Comp Engn & Sci, Pond Lab 317, University Pk, PA 16802 USA. Univ Illinois, Beckman Inst, Urbana, IL 61801 USA. Oak Ridge Natl Lab, Robot & Proc Syst Div, Oak Ridge, TN 37831 USA. RP Penn State Univ, Dept Comp Engn & Sci, Pond Lab 317, University Pk, PA 16802 USA. NR 19 TC 16 Z9 17 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8890 EI 1872-793X J9 ROBOT AUTON SYST JI Robot. Auton. Syst. PD APR 2 PY 1998 VL 23 IS 3 BP 153 EP 169 DI 10.1016/S0921-8890(97)00052-3 PG 17 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Robotics SC Automation & Control Systems; Computer Science; Robotics GA ZQ685 UT WOS:000073892800002 ER PT J AU Schefer, J Schwarzenbach, D Fischer, P Koetzle, T Larsen, FK Haussuhl, S Rudlinger, M McIntyre, G Birkedal, H Burgi, HB AF Schefer, J Schwarzenbach, D Fischer, P Koetzle, T Larsen, FK Haussuhl, S Rudlinger, M McIntyre, G Birkedal, H Burgi, HB TI Neutron and X-ray diffraction study of the thermal motion in K2PtCl6 as a function of temperature SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE LA English DT Article ID ELECTRON-DENSITY; PARAMETERS; CRYSTALS AB The crystal structure and thermal displacement parameters of potassium hexachloroplatinate, K2PtCl6, have been studied as functions of temperature between 8 and 380 K, using four single crystal neutron diffraction, five single crystal X-ray diffraction and two neutron powder diffraction data sets. Third-order anharmonic Gram-Charlier terms have been determined in all the neutron single crystal and two of the X-ray refinements. Results are consistent with a predominantly ionic compound K-2(+)(PtCl6)(2-) Th, dimensions of the octahedral (PtCl6)(2-) ion hardly vary with temperature. During thermal expansion, these rigid ions move farther apart. The temperature dependence of the atomic mean-square displacements agrees well with that of ensemble-averaged quantized harmonic oscillators. The thermal motion of (PtCl6)(2-) is dominated by rigid-body libration and translation, but contributions from internal vibrations are also identified. The anharmonic coefficients of Cl at high temperature agree with curvilinear motion due to the rigid-body libration. The motion of K+ is also anharmonic. C1 ETH Zurich, Neutron Scattering Lab, CH-5232 Villigen, Switzerland. Paul Scherrer Inst, CH-5232 Villigen, Switzerland. Univ Lausanne, Inst Crystallog, CH-1015 Lausanne, Switzerland. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Aarhus Univ, Dept Inorgan Chem, DK-8000 Aarhus C, Denmark. Univ Cologne, Inst Crystallog, D-50764 Cologne, Germany. Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. Univ Bern, Crystallog Lab, CH-3012 Bern, Switzerland. RP Schefer, J (reprint author), ETH Zurich, Neutron Scattering Lab, CH-5232 Villigen, Switzerland. EM dieter.schwarzenbach@ic.unil.ch RI Schefer, Jurg/G-3960-2012; OI Birkedal, Henrik/0000-0002-4201-2179 NR 28 TC 9 Z9 9 U1 0 U2 7 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-7681 J9 ACTA CRYSTALLOGR B JI Acta Crystallogr. Sect. B-Struct. Sci. PD APR 1 PY 1998 VL 54 BP 121 EP 128 DI 10.1107/S0108768197011956 PN 2 PG 8 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA 100PZ UT WOS:000074825700004 ER PT J AU Kimsey, KD Schraml, SJ Hertel, ES AF Kimsey, KD Schraml, SJ Hertel, ES TI Scalable computations in penetration mechanics SO ADVANCES IN ENGINEERING SOFTWARE LA English DT Article; Proceedings Paper CT 4th National Symposium on Large-Scale Analysis and Design on High-Performance Computers and Workstations CY OCT 15-17, 1997 CL WILLIAMSBURG, VIRGINIA AB This paper presents an overview of an explicit message-passing paradigm for a Eulerian finite volume method for modeling solid dynamics problems involving shock wave propagation, multiple materials, and large deformations. Three-dimensional simulations of high-velocity impact were conducted on the TBM SP2, the SGI Power Challenge Array, and the SGI Origin 2000. The scalability of the message-passing code on distributed-memory and symmetric multiprocessor architectures is presented and compared to the ideal linear performance. (C) 1998 Elsevier Science Limited. All rights reserved. C1 USA, Res Lab, Weapons & Mat Res Directorate, Aberdeen Proving Ground, MD 21005 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Kimsey, KD (reprint author), USA, Res Lab, Weapons & Mat Res Directorate, Aberdeen Proving Ground, MD 21005 USA. NR 15 TC 8 Z9 8 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0965-9978 J9 ADV ENG SOFTW JI Adv. Eng. Softw. PD APR-JUL PY 1998 VL 29 IS 3-6 BP 209 EP 215 DI 10.1016/S0965-9978(97)00084-7 PG 7 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering; Engineering, Multidisciplinary SC Computer Science; Engineering GA 112LN UT WOS:000075496300005 ER PT J AU Kanapady, R Tamma, KK Baddourah, M Mark, A AF Kanapady, R Tamma, KK Baddourah, M Mark, A TI High performance computing on a symmetric multiprocessor (SMP) environment for RTM process modeling of large complex structural geometries SO ADVANCES IN ENGINEERING SOFTWARE LA English DT Article; Proceedings Paper CT 4th National Symposium on Large-Scale Analysis and Design on High-Performance Computers and Workstations CY OCT 15-17, 1997 CL WILLIAMSBURG, VA DE resin transfer molding; process modeling; parallel computations ID ALGORITHM AB The present paper discusses finite element computational schemes, data structures and interprocessor communication strategies for the implementation of advanced manufacturing simulations with particular emphasis on isothermal resin transfer molding (RTM) process manufacturing simulations on the symmetric multiprocessor (SGI Power Challenge). Thin shell composite mold configurations are used to illustrate the validity of the present implementation of a recently developed and new pure finite element implicit methodology in conjunction with a diagonal preconditioned conjugate gradient method for parallel computations including the process simulations techniques in a SGI Power Challenge node. The techniques developed are applied to large scale problems using a Power Challenge node to demonstrate the practical applicability. (C) 1998 Published by Elsevier Science Ltd. All rights reserved. C1 Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55455 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. USA, Res Lab, Aberdeen Proving Ground, MD 21005 USA. RP Univ Minnesota, Dept Mech Engn, 111 Church St SE, Minneapolis, MN 55455 USA. NR 19 TC 5 Z9 7 U1 0 U2 1 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0965-9978 EI 1873-5339 J9 ADV ENG SOFTW JI Adv. Eng. Softw. PD APR-JUL PY 1998 VL 29 IS 3-6 BP 399 EP 408 DI 10.1016/S0965-9978(98)00002-7 PG 10 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering; Engineering, Multidisciplinary SC Computer Science; Engineering GA 112LN UT WOS:000075496300028 ER PT J AU Ivezic, N Garrett, JH AF Ivezic, N Garrett, JH TI Machine learning for simulation-based support of early collaborative design SO AI EDAM-ARTIFICIAL INTELLIGENCE FOR ENGINEERING DESIGN ANALYSIS AND MANUFACTURING LA English DT Article DE collaborative design; constraint satisfaction; real-time decision support; simulations; statistical neural networks AB The research and development of a simulation-based decision support system (SB-DSS) capable of assisting early collaborative design processes is presented. The requirements for such a system are included. Existing collaborative DSSs are shown to lack the capability to manipulate complex simulation-based relationships. On the other hand, advances within the machine learning in design community are shown to have a potential for providing, but have not yet addressed, simulation-based support for collaborative design processes. The developed SB-DSS is described in terms of its four principal components. First, the behavior-evaluation (BE) model is used to both structure individual, domain-specific decision models and organize these models into a collaborative decision model. Second, a probabilistic framework for the BE model enables management of the uncertainty inherent in learning and using simulation-based knowledge. Significantly, this framework provides a constraint satisfaction environment in which simulation-based knowledge is used. Third, a statistical neural network approach is used to capture simulation-based knowledge and build the probabilistic behavior models based on this knowledge. Fourth, since a probability distribution theory does not exist for the nonlinear neural network approaches, Monte Carlo simulation is introduced as a method to sample the trained neural networks and approximate the likelihoods of design variable values. Consequently, constraint satisfaction problem-solving capability is obtained. In addition, a mapping of the SB-DSS architecture onto a collaborative design agent framework is provided. Experimental evaluation of a prototype SB-DSS system is summarized, and performance of the SB-DSS with respect to search and usability metrics is documented. Initial results in developing the simulation-based support for collaborative design are encouraging. Lastly, a categorization of the machine learning approach and a critique of the proposed categorization scheme is presented. C1 Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. Carnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA 15213 USA. NR 15 TC 7 Z9 7 U1 2 U2 2 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 USA SN 0890-0604 J9 AI EDAM JI AI EDAM-Artif. Intell. Eng. Des. Anal. Manuf. PD APR PY 1998 VL 12 IS 2 BP 123 EP 139 PG 17 WC Computer Science, Artificial Intelligence; Computer Science, Interdisciplinary Applications; Engineering, Multidisciplinary; Engineering, Manufacturing SC Computer Science; Engineering GA ZJ820 UT WOS:000073256800005 ER PT J AU Vorobieff, PV Rockwell, DO AF Vorobieff, PV Rockwell, DO TI Vortex breakdown on pitching delta wing: Control by intermittent trailing-edge blowing SO AIAA JOURNAL LA English DT Article ID PARTICLE IMAGE VELOCIMETRY; ROTATING MIRROR; VORTICES; PIV AB To retard the onset of vortex breakdown on a half-delta wing subjected to periodic, targe-amplitude maneuvers to high angle of attack, controls were applied in the form of a deflectable flap at the leading edge and variable blowing at the trailing edge of the wing. Intermittent blowing, applied during the upstroke part of the pitching cycle, appears to be the most energetically efficient means of retarding the onset of breakdown. Corresponding values of a dimensionless blowing coefficient are an order of magnitude smaller than those traditionally employed. Particle image velocimetry measurements of the velocity field in the plane of the leading-edge vortex show that blowing-induced changes of the velocity field propagate upstream along the lower surface of the wing. Intermittent blowing produces a radical change in the velocity distribution near the surface of the delta wing that persists throughout the entire pitching cycle. The phase lag of the blowing-induced velocity appears to be central to maintaining retardation of the onset of breakdown. C1 Univ Calif Los Alamos Natl Lab, Grp DX 3 MST 10 CNLS, Los Alamos, NM 87545 USA. RP Vorobieff, PV (reprint author), Univ Calif Los Alamos Natl Lab, Grp DX 3 MST 10 CNLS, Mail Stop B258, Los Alamos, NM 87545 USA. OI Vorobieff, Peter/0000-0003-0631-7263 NR 23 TC 18 Z9 18 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 USA SN 0001-1452 J9 AIAA J JI AIAA J. PD APR PY 1998 VL 36 IS 4 BP 585 EP 589 DI 10.2514/2.409 PG 5 WC Engineering, Aerospace SC Engineering GA ZE549 UT WOS:000072804600012 ER PT J AU Oh, CH Lienhard, JH Younis, HF Dahbura, RS Michels, D AF Oh, CH Lienhard, JH Younis, HF Dahbura, RS Michels, D TI Liquid jet-array cooling modules for high heat fluxes SO AICHE JOURNAL LA English DT Article ID TURBULENCE MODEL ASSESSMENT; IMPINGING JET; IMPINGEMENT AB Liquid jet-away cooling modules had been designed for operation at very high heat fluxes and were used to remove fluxes as high as 17 MW/m(2). Experimental results, numerical studies, and thermal stress analyses are reported. Modules having actively cooled areas of 10 cm(2) were developed. Cooling is provided by an away of small-diameter water jets operating at speeds of 47 m/s. These jets impinge on the rear side of a 2- to 4-mm-thick metallic faceplate from which the heat load is absorbed. Cooling is entirely convective without boiling. The behavior of cooling jet arrays is summarized, including numerical simulations for our specific cases. Finite-element studies of the stresses in candidate faceplate materials are described for typical thermal and mechanical conditions. A thin-film high-flux resistance heater provides the heat load for testing module prototypes. The thermal resistances of the system are quantified experimentally and incorporated in our numerical model. The dominant thermal resistance is associated with the heating element. The modules are believed to be serviceable to fluxes above 20 MW/m(2), although difficulties with the heating element prevented this level from being reached. C1 Lockheed Martin Idaho Technol Co, Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. MIT, Dept Mech Engn, WM Rohsenow Heat & Mass Transfer Lab, Cambridge, MA 02139 USA. RP Oh, CH (reprint author), Lockheed Martin Idaho Technol Co, Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. NR 29 TC 16 Z9 17 U1 0 U2 5 PU AMER INST CHEMICAL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0001-1541 J9 AICHE J JI AICHE J. PD APR PY 1998 VL 44 IS 4 BP 769 EP 779 DI 10.1002/aic.690440402 PG 11 WC Engineering, Chemical SC Engineering GA ZG320 UT WOS:000072989700001 ER PT J AU Plague, GR Wallace, JB Grubaugh, JW AF Plague, GR Wallace, JB Grubaugh, JW TI Linkages between trophic variability and distribution of Pteronarcys spp. (Plecoptera : Pteronarcyidae) along a stream continuum SO AMERICAN MIDLAND NATURALIST LA English DT Article ID POPULATION-GENETICS; APPALACHIAN STREAM; RIVER; EPHEMEROPTERA; SYSTEMATICS; FOOD; USA AB Pteronarcys stoneflies, which are traditionally considered shredders in eastern North America, inhabit second-through seventh-order streams in the Little Tennessee River (LTR) drainage basin. Because very little coarse allochthonous particulate organic matter occurs in the relatively large (sixth- and seventh-order) LTR, we analyzed the gut contents of five individuals from each of five sites and two dates (August and December) (n = 50) along a fourth-through seventh-order stretch of this stream continuum. Pteronarcids consumed significantly different percentages of some food items between sampling dates. Pteronarcys progressively consumed significantly more diatoms (from <1% of gut contents at stream order 4 to 46% at stream order 7) and significantly less detrital material (from >90% of gut contents at stream order 4 to ca. 50% at stream order 7) from fourth-to seventh-order sites, and the amount of Pteronarcys production attributable to each of these food items shifted significantly along the stream continuum. This diet shift raised the obvious question: Does the shift reflect changing Pteronarcys species composition or is only one species present throughout the continuum? We conducted an allozyme electrophoretic analysis on 62 pteronarcids from the LTR drainage basin using five diagnostic gene loci for eastern USA Pteronarcys species. We determined that three apparent species occur along this continuum. Pteronarcys species A inhabits the upstream sites (fourth-through sixth-order), Pteronarcys species C the downstream sites (sixth-and seventh-order), and Pteronarcys species B the mid-reach site where A and C co-occur (sixth-order). Based on their diet and distribution, Pteronarcys sp. A and P. sp. C exhibit different patterns of food consumption along the continuum, with the former consuming mainly detritus and the latter consuming detritus and diatoms. C1 Univ Georgia, Dept Entomol, Athens, GA 30602 USA. Univ Memphis, Dept Biol, Memphis, TN 38152 USA. RP Plague, GR (reprint author), Univ Georgia, Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA. NR 31 TC 10 Z9 10 U1 0 U2 3 PU AMER MIDLAND NATURALIST PI NOTRE DAME PA UNIV NOTRE DAME, BOX 369, ROOM 295 GLSC, NOTRE DAME, IN 46556 USA SN 0003-0031 J9 AM MIDL NAT JI Am. Midl. Nat. PD APR PY 1998 VL 139 IS 2 BP 224 EP 234 DI 10.1674/0003-0031(1998)139[0224:LBTVAD]2.0.CO;2 PG 11 WC Biodiversity Conservation; Ecology SC Biodiversity & Conservation; Environmental Sciences & Ecology GA ZN556 UT WOS:000073657700004 ER PT J AU Jones, VW Kenseth, JR Porter, MD Mosher, CL Henderson, E AF Jones, VW Kenseth, JR Porter, MD Mosher, CL Henderson, E TI Microminiaturized immunoassays using atomic force microscopy and compositionally patterned antigen arrays SO ANALYTICAL CHEMISTRY LA English DT Article ID SELF-ASSEMBLED MONOLAYERS; SCANNING PROBE MICROSCOPY; DIALKYL DISULFIDE REAGENT; COVALENT IMMOBILIZATION; ALKANETHIOL MONOLAYERS; MOLECULAR ASSEMBLIES; BUFFER SOLUTIONS; AQUEOUS BUFFERS; GOLD SURFACES; ANTIBODIES AB This paper combines the topographic imaging capability of the atomic force microscope (AFM) with a compositionally patterned array of immobilized antigenic rabbit IgG on gold as an approach to performing immunoassays, The substrates are composed of micrometer-sized domains of IgG that are covalently linked to a photolithagraphically patterned array of a monolayer-based coupling agent. The immobilized coupling agent, which is prepared by the chemisorption of dithiobis(succinimidyl undecanoate) on gold, is separated by micrometer-sized grids of a monolayer formed from octadecanethiol (ODT), The strong hydrophobicity of the ODT adlayer, combined with the addition of the surfactant Tween 80 to the buffer solution that is used in forming the antibody-antigen pairs, minimizes the nonspecific adsorption of proteinaceous materials to the grid regions, This minimization allows the grids to function as a reference plane for the AFM detection of the height increase when a complementary antibody-antigen pair is formed, The advantageous features of this strategy, which include ease of sample preparation, an internal reference plane for the detection of topographic changes, and the potential for regeneration and reuse, are demonstrated using rabbit IgG as an immobilized antigen and goat anti-rabbit IgG as the complementary antibody. The prospects for further miniaturization are discussed. C1 Iowa State Univ Sci & Technol, Ames Lab, US DOE, Microanalyt Instrumentat Ctr, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Zool & Genet, Ames, IA 50011 USA. Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA. RP Henderson, E (reprint author), Iowa State Univ Sci & Technol, Ames Lab, US DOE, Microanalyt Instrumentat Ctr, Ames, IA 50011 USA. NR 62 TC 103 Z9 110 U1 3 U2 24 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1998 VL 70 IS 7 BP 1233 EP 1241 DI 10.1021/ac971125y PG 9 WC Chemistry, Analytical SC Chemistry GA ZF387 UT WOS:000072892400007 PM 9553488 ER PT J AU Finklea, HO Phillippi, MA Lompert, E Grate, JW AF Finklea, HO Phillippi, MA Lompert, E Grate, JW TI Highly sorbent films derived from Ni(SCN)(2)(4-picoline)(4) for the detection of chlorinated and aromatic hydrocarbons with quartz crystal microbalance sensors SO ANALYTICAL CHEMISTRY LA English DT Article ID ACOUSTIC-WAVE SENSORS; FREQUENCY IMPEDANCE ANALYSIS; SOLVENT VAPORS; MOLECULAR RECOGNITION; SUPRAMOLECULAR DETECTION; CHEMICAL SENSORS; SAW-DEVICES; MASS; RESPONSES; COATINGS AB A quartz crystal microbalance (QCM) spray-coated with a Ni(SCN)(2)(4-picoline)(4) film is a sensitive detector for small aromatic (benzene, toluene) and chlorinated (trichloroethylene, perchloroethylene) vapors with a planar molecular geometry, Frequency changes during transient exposures to these vapors are rapid and reversible, In contrast, frequency changes during transient exposures to carbon tetrachloride vapor exhibit a very slow rise and decay, Impedance studies demonstrate that the QCMs are responding only to mass changes in the film, Calibration curves exhibit both linear and near-saturation responses, depending on the vapor and vapor concentration, Partition coefficients obtained from the linear response regimes of the calibration curves are in the 10 000-100 000 range, more than an order of magnitude larger than the partition coefficients for a prototypical soft polymer, poly(isobutylene), Despite the absence of evidence for crystallinity by optical or X-ray diffraction methods, the spray-coated films appear to be forming clathrates with the organic vapors, The Ni(SCN)(2)(4-picoline)(4) film is promising for the development of very sensitive and partially selective piezoelectric sensors for nonpolar or weakly polar organic vapors in air. C1 W Virginia Univ, Dept Chem, Morgantown, WV 26506 USA. Pacific NW Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Finklea, HO (reprint author), W Virginia Univ, Dept Chem, Morgantown, WV 26506 USA. NR 51 TC 36 Z9 36 U1 1 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1998 VL 70 IS 7 BP 1268 EP 1276 DI 10.1021/ac970652e PG 9 WC Chemistry, Analytical SC Chemistry GA ZF387 UT WOS:000072892400012 PM 21644723 ER PT J AU Isola, NR Stokes, DL Vo-Dinh, T AF Isola, NR Stokes, DL Vo-Dinh, T TI Surface enhanced Raman gene probe for HIV detection SO ANALYTICAL CHEMISTRY LA English DT Article ID SILVER ELECTRODE; DNA; BIOSENSOR; PYRIDINE; SPECTRA AB We report, for the first time, the use of surface-enhanced Raman (SERS)-active labels for primers used in polymerase chain reaction amplification of specific target DNA sequences. This method has the potential for combining the spectral selectivity and high sensitivity of the SERS technique with the inherent molecular specificity offered by DNA sequence hybridization. The effectiveness of the detection scheme is demonstrated using the gag gene sequence of the human immunodeficiency virus. The potential use of multiple probes for simultaneous detection of multiple biological targets is discussed. C1 Oak Ridge Natl Lab, Div Life Sci, Adv Monitoring Dev Grp, Oak Ridge, TN 37831 USA. RP Vo-Dinh, T (reprint author), Oak Ridge Natl Lab, Div Life Sci, Adv Monitoring Dev Grp, POB 2008, Oak Ridge, TN 37831 USA. NR 18 TC 188 Z9 192 U1 3 U2 64 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1998 VL 70 IS 7 BP 1352 EP 1356 DI 10.1021/ac970901z PG 5 WC Chemistry, Analytical SC Chemistry GA ZF387 UT WOS:000072892400023 PM 9553492 ER PT J AU Gao, QF Yeung, ES AF Gao, QF Yeung, ES TI A matrix for DNA separation: Genotyping and sequencing using poly(vinylpyrrolidone) solution in uncoated capillaries SO ANALYTICAL CHEMISTRY LA English DT Article ID LASER-INDUCED FLUORESCENCE; GEL-ELECTROPHORESIS; POLYMER-SOLUTIONS; HIGH-RESOLUTION; POLYACRYLAMIDE; FRAGMENTS AB We report a new sieving matrix for DNA separation based on commercially available poly(vinylpyrrolidone). The new sieving matrix has a very low viscosity at moderate concentrations, e.g., 27 cP at 4.5%, Its excellent self-coating property can reduce electroosmotic flow to a negligible level, Column regeneration between runs is very simple and effective, Successful separations were achieved in uncoated capillaries. For genotyping, we show that D1S80 and amelogenin sex determination system can be baseline separated as double-stranded DNA, and vWF, TH01, TPOX, and CSF1PO short tandem repeats can be separated with single-base resolution as single-stranded DNA in this new matrix. Sequencing of M13mp18 showed good resolution up to 500 bases in a solution of high-molecular-weight fraction extracted from commercially available PVP. The feasibility of adaptation to a multicapillary array system is discussed. C1 Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Yeung, ES (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. FU NHGRI NIH HHS [HG-01385] NR 33 TC 207 Z9 217 U1 5 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1998 VL 70 IS 7 BP 1382 EP 1388 DI 10.1021/ac970999h PG 7 WC Chemistry, Analytical SC Chemistry GA ZF387 UT WOS:000072892400028 PM 9553496 ER PT J AU Van Orden, A Machara, NP Goodwin, PM Keller, RA AF Van Orden, A Machara, NP Goodwin, PM Keller, RA TI Single molecule identification in flowing sample streams by fluorescence burst size and intraburst fluorescence decay rate SO ANALYTICAL CHEMISTRY LA English DT Article ID CYTOMETRY; LIQUIDS AB We report a multiplex technique for identification of single fluorescent molecules in a flowing sample stream by correlated measurement of single-molecule fluorescence burst size and intraburst fluorescence decay rate. These quantities were measured simultaneously for single fluorescent molecules in a flowing sample stream containing a dilute mixture of fluorescent species: Rhodamine 6G and tetramethylrhodamine isothiocyanate. Using a detailed Monte Carlo simulation of our experiment, we calculate single-molecule detection efficiencies and confidence levels for identification of these species and identify major sources of error for single-molecule identification. The technique reported here is applicable to distinguishing between fluorophores with similar spectroscopic properties and requires only a single excitation wavelength and single fluorescence emission detection channel. C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. RP Goodwin, PM (reprint author), Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, MS M888, Los Alamos, NM 87545 USA. RI Van Orden, Alan/N-4219-2015 NR 28 TC 74 Z9 75 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD APR 1 PY 1998 VL 70 IS 7 BP 1444 EP 1451 DI 10.1021/ac970545k PG 8 WC Chemistry, Analytical SC Chemistry GA ZF387 UT WOS:000072892400038 PM 21644740 ER PT J AU Keener, WK Watwood, ME Apel, WA AF Keener, WK Watwood, ME Apel, WA TI Activity-dependent fluorescent labeling of bacteria that degrade toluene via toluene 2,3-dioxygenase SO APPLIED MICROBIOLOGY AND BIOTECHNOLOGY LA English DT Article ID PSEUDOMONAS-PUTIDA F1; TRICHLOROETHYLENE METABOLISM; OXIDIZING BACTERIA; PATHWAY; BIODEGRADATION; DIOXYGENASE; DIVERSITY; OXIDATION; ASSAY AB Alternative substrates for the toluene 2,3-dioxygenase pathway of several pseudomonads served as enzyme-activity-dependent fluorescent probes for the bacteria. Phenylacetylene and cinnamonitrile were transformed to fluorescent and brightly colored products by Pseudomonas putida Fl, Pseudomonas fluorescens CFS215, and Barkholderia (Pseudomonas) strain JS150. Active bacteria transformed phenylacetylene, producing bright yellow solutions containing the putative product 2-hydroxy-6-oxo-7-octyn-2:4-dienoate. Transformation of cinnamonitrile resulted in bright orange solutions due to accumulation of the putative product 2-hydroxy-6-oxo-8-cyanoocta-2,4,7-trienoate. Chemical and physical properties of the products supported their identification, which indicated that the first three enzymes of the pathway catalyzed product formation. Phenylacetylene labeled bacteria with green fluorescence emission; bacteria were concentrated on black 0.2-mu m-pore-size polycarbonate filters containing polyvinylpyrrolidone (PVP) as a wetting agent. Bacteria labeled with cinnamonitrile were fluorescent orange; labeling was effective with bacteria trapped on PVP-free polycarbonate filters. Production of the enzymes involved in labeling of P. putida Fl and P. fluorescens CFS215 was induced by growth (on arginine) in the presence of toluene, cells grown on arginine without toluene were not labeled. Labeling of P. putida Fl by phenylacetylene was inhibited by toluene, indicating that the same enzymatic pathway was required for transformations of both substrates. Bacteria expressing other toluene-degrading enzymatic pathways were not fluorescently labeled with phenylacetylene. C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. Idaho State Univ, Pocatello, ID 83209 USA. RP Keener, WK (reprint author), Idaho Natl Engn & Environm Lab, POB 1625,MS-2203, Idaho Falls, ID 83415 USA. NR 32 TC 10 Z9 11 U1 0 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0175-7598 J9 APPL MICROBIOL BIOT JI Appl. Microbiol. Biotechnol. PD APR PY 1998 VL 49 IS 4 BP 455 EP 462 PG 8 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA ZN130 UT WOS:000073612900018 PM 9615486 ER PT J AU DeLong, MA Ortega, JM AF DeLong, MA Ortega, JM TI SOR as a preconditioner II SO APPLIED NUMERICAL MATHEMATICS LA English DT Article ID GMRES; ALGORITHM C1 Univ Virginia, Dept Comp Sci, Charlottesville, VA 22901 USA. RP DeLong, MA (reprint author), Los Alamos Natl Lab, Grp CIC19, Mail Stop B256, Los Alamos, NM 87545 USA. EM delong@lanl.gov; jmo@virginia.edu NR 13 TC 4 Z9 4 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9274 J9 APPL NUMER MATH JI Appl. Numer. Math. PD APR PY 1998 VL 26 IS 4 BP 465 EP 481 DI 10.1016/S0168-9274(97)00104-9 PG 17 WC Mathematics, Applied SC Mathematics GA ZB646 UT WOS:000072493400004 ER PT J AU Soufli, R Gullikson, EM AF Soufli, R Gullikson, EM TI Absolute photoabsorption measurements of molybdenum in the range 60-930 eV for optical constant determination SO APPLIED OPTICS LA English DT Article ID MO; TA; AG; AU AB Transmission measurements for the optical constants delta, beta of the complex refractive index n = 1 - delta + i beta of molybdenum are performed in the energy range 60-930 eV. Free-standing C/Mo/C foils of five different thicknesses are used, and the results are normalized for the presence of the carbon layers in the samples. These absorption results are combined with previous experimental data in the lower energy range and values from the atomic tables to obtain the imaginary (absorptive) part of the refractive index for molybdenum in the range 1-30,000 eV. The real (dispersive) part of n was calculated from Kramers-Kronig analysis with the above absorption data. An evaluation with the partial sum rules demonstrates that this new compilation provides an improved set of values for n, covering a wider energy range compared with the current tabulated values. The new results are applied sc as to calculate the normal-incidence reflectivities of Mo/Si and Mo/Be multilayer mirrors. (C) 1998 Optical Society of America. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. RP Soufli, R (reprint author), Smithsonian Astrophys Observ, Cambridge, MA 02138 USA. NR 14 TC 34 Z9 34 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD APR 1 PY 1998 VL 37 IS 10 BP 1713 EP 1719 DI 10.1364/AO.37.001713 PG 7 WC Optics SC Optics GA ZD695 UT WOS:000072713700001 PM 18273078 ER PT J AU Koch, JA Landen, OL Barbee, TW Celliers, P Da Silva, LB Glendinning, SG Hammel, BA Kalantar, DH Brown, C Seely, J Bennett, GR Hsing, W AF Koch, JA Landen, OL Barbee, TW Celliers, P Da Silva, LB Glendinning, SG Hammel, BA Kalantar, DH Brown, C Seely, J Bennett, GR Hsing, W TI High-energy x-ray microscopy techniques for laser-fusion plasma research at the National Ignition Facility SO APPLIED OPTICS LA English DT Article ID NOVA AB Multi-kilo-eledron-volt x-ray microscopy will be an important laser-produced plasma diagnostic at future megajoule facilities such as the National Ignition Facility (NIF). However, laser energies and plasma characteristics imply that x-ray microscopy will be more challenging at NIF than at existing facilities. We use analytical estimates and numerical ray tracing to investigate several instrumentation options in detail, and we conclude that near-normal-incidence single spherical or toroidal crystals may offer the best general solution for high-energy x-ray microscopy at NIF and similar large facilities. Apertured Kirkpatrick-Baez microscopes using multilayer mirrors may also be good options, particularly for applications requiring one-dimensional imaging over narrow fields of view. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. USN, Res Lab, Washington, DC 20375 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Koch, JA (reprint author), Univ Calif Lawrence Livermore Natl Lab, POB 808,L-473, Livermore, CA 94550 USA. NR 27 TC 79 Z9 89 U1 0 U2 6 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD APR 1 PY 1998 VL 37 IS 10 BP 1784 EP 1795 DI 10.1364/AO.37.001784 PG 12 WC Optics SC Optics GA ZD695 UT WOS:000072713700012 PM 18273089 ER PT J AU Atkins, HL AF Atkins, HL TI Overview of nuclides for bone pain palliation SO APPLIED RADIATION AND ISOTOPES LA English DT Article; Proceedings Paper CT Symposium on Measurements for Radionuclides Used for Bone Pain Palliation Therapy CY SEP 17, 1996 CL GAITHERSBURG, MARYLAND SP Council Ionizing Rad Measurements & Stand, NIST ID METASTATIC PROSTATE-CANCER; OSSEOUS METASTASES; SR-89 THERAPY; CARCINOMA; TRIAL; SAMARIUM-153-EDTMP; BIODISTRIBUTION; MANAGEMENT; ADJUVANT; RELIEF AB A variety of radiopharmaceuticals has been used for systemic therapy to relieve pain from malignancies metastatic to bone, using electron emitting radionuclides either in ionic form or as labels for bone seeking compounds to irradiate locally at sites of metastases. The major complication comes from the absorbed dose to the bone marrow. Therefore, there has been a search for radionuclides with lower energy emissions and correspondingly shorter range in tissue. Some studies have shown that it is possible to delay the onset of new pain sites and perhaps increase life expectancy. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. SUNY Stony Brook, Hlth Sci Ctr, Dept Radiol, Stony Brook, NY 11794 USA. RP Atkins, HL (reprint author), Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 24 TC 31 Z9 32 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD APR PY 1998 VL 49 IS 4 BP 277 EP 283 DI 10.1016/S0969-8043(97)00039-0 PG 7 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA YZ528 UT WOS:000072263100002 PM 9519437 ER PT J AU Mausner, LF Kolsky, KL Joshi, V Srivastava, SC AF Mausner, LF Kolsky, KL Joshi, V Srivastava, SC TI Radionuclide development at BNL for nuclear medicine therapy SO APPLIED RADIATION AND ISOTOPES LA English DT Article; Proceedings Paper CT Symposium on Measurements for Radionuclides Used for Bone Pain Palliation Therapy CY SEP 17, 1996 CL GAITHERSBURG, MARYLAND SP Council Ionizing Rad Measurements & Stand, NIST ID CLUSTER-LABELED ANTIBODIES; OSSEOUS METASTASES; INVIVO BEHAVIOR; NO-CARRIER; GOLD; RADIOPHARMACEUTICALS; RADIOIMMUNOTHERAPY; BIODISTRIBUTION; SELECTION; ANIMALS AB Radionuclides with medium energy beta emission and a several day half-life have often been viewed as attractive candidates for radioimmunotherapy. Among the most promising in this category are Sc-47, Cu-67, Sm-153, Re-188, and Au-199. The production of Cu-67, Sm-153, Au-199 at BNL is summarized and the development of the latest candidate for this application, Sc-47, is described in detail. We also summarize the development of another important therapeutic radionuclide, Sn-117m for bone pain palliation. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. RP Mausner, LF (reprint author), Brookhaven Natl Lab, Dept Med, POB 5000, Upton, NY 11973 USA. NR 37 TC 59 Z9 61 U1 2 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD APR PY 1998 VL 49 IS 4 BP 285 EP 294 DI 10.1016/S0969-8043(97)00040-7 PG 10 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA YZ528 UT WOS:000072263100003 PM 9519438 ER PT J AU Knapp, FFR Mirzadeh, S Beets, AL O'Doherty, M Blower, PJ Verdera, ES Gaudiano, JS Kropp, J Guhlke, J Palmedo, H Biersack, HJ AF Knapp, FFR Mirzadeh, S Beets, AL O'Doherty, M Blower, PJ Verdera, ES Gaudiano, JS Kropp, J Guhlke, J Palmedo, H Biersack, HJ TI Reactor-produced radioisotopes from ORNL for bone pain palliation SO APPLIED RADIATION AND ISOTOPES LA English DT Article; Proceedings Paper CT Symposium on Measurements for Radionuclides Used for Bone Pain Palliation Therapy CY SEP 17, 1996 CL GAITHERSBURG, MARYLAND SP Council Ionizing Rad Measurements & Stand, NIST ID GENERATOR AB The treatment of painful skeletal metastases is a common clinical problem, and the use of therapeutic radionuclides which localize at metastatic sites has been found to be an effective method for treatment of pain, especially for multiple sites for which the use of external beam irradiation is impractical. There are currently several metastatic-targeted agents radiolabeled with various therapeutic radionuclides which are in various stages of clinical investigation. Since neutron rich radionuclides are produced in research reactors and often decay by emission of beta(-) particles, most radionuclides used for bone pain palliation are reactor-produced. Key examples of radionuclides produced by single neutron capture of enriched targets include rhenium-186 and samarium-153. In addition, generator systems are also of interest which provide therapeutic daughter radionuclides from the decay of reactor-produced parent radionuclides. One important example is rhenium-188, available from generators via decay of reactor-produced tungsten-188. Tin-117m is an example of a reactor-produced radionuclide which decays with the emission of low-energy conversion electrons rather than by beta(-) decay. Each of these agents and/or radionuclides has specific advantages and disadvantages, however, the ideal agent for bone pain palliation has not yet been identified. The goal of this paper is to briefly review the production and use of several reactor-produced radionuclides for bone pain palliation, and to discuss the role of the ORNL High Flux Isotope Reactor(HFIR) for the production of many of these radionuclides. Published by Elsevier Science Ltd. C1 Oak Ridge Natl Lab, Nucl Med Grp, Oak Ridge, TN 37831 USA. Kent & Canterbury Hosp, Canterbury, New Zealand. Italia Hosp, Dept Nucl Med, Montevideo, Uruguay. Carl Gustav Univ, Dept Nucl Med, Dresden, Germany. Univ Bonn, Nucl Med Clin, Bonn, Germany. RP Knapp, FFR (reprint author), Oak Ridge Natl Lab, Nucl Med Grp, Oak Ridge, TN 37831 USA. NR 26 TC 39 Z9 39 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD APR PY 1998 VL 49 IS 4 BP 309 EP 315 PG 7 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA YZ528 UT WOS:000072263100007 PM 9519440 ER PT J AU Mirzadeh, S AF Mirzadeh, S TI Generator-produced alpha-emitters SO APPLIED RADIATION AND ISOTOPES LA English DT Article; Proceedings Paper CT Symposium on Measurements for Radionuclides Used for Bone Pain Palliation Therapy CY SEP 17, 1996 CL GAITHERSBURG, MARYLAND SP Council Ionizing Rad Measurements & Stand, NIST ID ANTIBODY; BI-212; RADIOIMMUNOTHERAPY; THERAPY; PB-212 AB This review briefly describes the nuclear characteristics and production parameters for 7.2. h At-211, 60.6 min Bi-212, 45.6 min Bi-213, 11 d(233)Ra, and 20 h Fm-255. These alpha-emitting radioisotopes are the subject of current interest for alpha-particle-mediated radioimmunotherapy. Published by Elsevier Science Ltd. C1 Oak Ridge Natl Lab, Nucl Med Grp, Life Sci Res Div, Oak Ridge, TN 37831 USA. RP Mirzadeh, S (reprint author), Oak Ridge Natl Lab, Nucl Med Grp, Life Sci Res Div, Oak Ridge, TN 37831 USA. NR 24 TC 25 Z9 26 U1 1 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD APR PY 1998 VL 49 IS 4 BP 345 EP 349 DI 10.1016/S0969-8043(97)00175-9 PG 5 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA YZ528 UT WOS:000072263100011 ER PT J AU Saed, M Walsh, P AF Saed, M Walsh, P TI Numerical evaluation of the production of radionuclides in a nuclear reactor (Part I) SO APPLIED RADIATION AND ISOTOPES LA English DT Article ID TRANSMUTATION AB Numerical evaluation of nuclear transmutations is essential for optimization of radionuclide production. Accordingly, we have developed a generalized computer program called LAURA for predicting the production rates of radionuclides in a nuclear reactor. The program is generalized in the sense that it can be used for calculation of the production rate of any member of a network undergoing spontaneous decay and/or induced neutron transformation in a nuclear reactor. In this paper (Part I), we describe the mathematical basis for the development of LAURA. Expressions based on the Rubinson (1949) approach have been used for the evaluation of the depletion functions. This method is also valid when some of the depletion constants have identical values; thus, the approximate solution of Raykin and Shlyakhter (1989) can be used to account for the effects of feedback due to alpha decay. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Oak Ridge Natl Lab, Div Life Sci, Nucl Med Grp, Oak Ridge, TN 37831 USA. RP Walsh, P (reprint author), Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. NR 14 TC 0 Z9 1 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD APR PY 1998 VL 49 IS 4 BP 379 EP 382 PG 4 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA YZ528 UT WOS:000072263100017 ER PT J AU Mirzadeh, S Walsh, P AF Mirzadeh, S Walsh, P TI Numerical evaluation of the production of radionuclides in a nuclear reactor (Part II) SO APPLIED RADIATION AND ISOTOPES LA English DT Article AB A computer program called LAURA has been developed to predict the production rates of any member of a nuclei network undergoing spontaneous decay and/or induced neutron transformation in a nuclear reactor. The theoretical bases for the development of LAURA were discussed in Part I. In particular, in Part I, we described how an expression based on the Rubinson (1949) approach is used to evaluate the depletion function. In this paper (Part II), we describe the full simulation of radionuclide production including the decomposition of a reaction network into independent linear chains, provisions for periodic reactor shutdown and restart, and implementation of an approximate solution given by Raykin and Shlyakhter (1989) to account for the effect of feedback due to alpha decay. Also included are some examples which demonstrate possible uses for LAURA. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Oak Ridge Natl Lab, Div Life Sci, Nucl Med Grp, Oak Ridge, TN 37831 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. RP Mirzadeh, S (reprint author), Oak Ridge Natl Lab, Div Life Sci, Nucl Med Grp, Oak Ridge, TN 37831 USA. NR 6 TC 3 Z9 3 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0969-8043 J9 APPL RADIAT ISOTOPES JI Appl. Radiat. Isot. PD APR PY 1998 VL 49 IS 4 BP 383 EP 395 DI 10.1016/S0969-8043(97)00288-1 PG 13 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA YZ528 UT WOS:000072263100018 PM 9519445 ER PT J AU Fisher, WG Wachter, EA Lytle, FE Armas, M Seaton, C AF Fisher, WG Wachter, EA Lytle, FE Armas, M Seaton, C TI Source-corrected two-photon excited fluorescence measurements between 700 and 880 nm SO APPLIED SPECTROSCOPY LA English DT Article DE two-photon excitation; titanium : sapphire laser; multimode power correction; second-order coherence; chemical reference ID EXCITATION CROSS-SECTIONS; 2ND HARMONIC DETECTION; POWER-SQUARED SENSOR; 2-PHOTON ABSORPTION; SPECTROSCOPY AB Passively mode-locked titanium:sapphire (Ti:S) lasers are capable of generating a high-frequency train of transform-limited subpicosecond pulses, producing peak powers near 10(5) W at moderate average powers. The low energy per pulse (<20 nJ) permits low fluence levels to be maintained in lightly focused beams, reducing the possibility of saturating fluorescence transitions. These properties, combined with a wavelength tunability from approximately 700 nm to 1 mu m, provide excellent opportunities for studying simultaneous two-photon excitation (TPE). However, pulse formation is very sensitive to a variety of intracavity parameters, including group velocity dispersion compensation, which leads to wavelength-dependent pulse profiles as the wavelength is scanned. This wavelength dependence can seriously distort band shapes and apparent peak heights during collection of two-photon spectral data. Since two-photon excited fluorescence is proportional to the product of the peak and average powers, it is not possible to obtain source-independent spectra by using average power correction schemes alone. Continuous-wave, single-mode lasers can be used to generate source-independent two-photon data, but these sources are four to five orders of magnitude less efficient than the mode-locked Ti:S laser and are not practical for general two-photon measurements. Hence, a continuous-wave, single-mode Ti:S laser has been used to collect a source-independent excitation spectrum for the laser dye Coumarin 480. This spectrum may be used to correct data collected with multimode sources; this possibility is demonstrated by using a simple ratiometric method to collect accurate TPE spectra with the mode-locked Ti:S laser. An approximate value of the two-photon cross section for Coumarin 480 is also given. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA. Coherent Laser Grp, Santa Clara, CA 95054 USA. RP Fisher, WG (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 31 TC 44 Z9 44 U1 2 U2 4 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA 201B BROADWAY ST, FREDERICK, MD 21701 USA SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD APR PY 1998 VL 52 IS 4 BP 536 EP 545 DI 10.1366/0003702981944085 PG 10 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA ZM180 UT WOS:000073512700010 ER PT J AU Xiao, HM Dai, S Young, JP Feigerle, CS Edwards, AG AF Xiao, HM Dai, S Young, JP Feigerle, CS Edwards, AG TI Quantitative Raman spectral measurements using a diamond-coated all-silica fiber-optic probe SO APPLIED SPECTROSCOPY LA English DT Article DE Raman spectroscopy; fiber-optic probe; diamond coating; quantitative analysis C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. RP Young, JP (reprint author), Oak Ridge Natl Lab, Div Chem & Analyt Sci, POB 2008, Oak Ridge, TN 37831 USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 5 TC 11 Z9 11 U1 1 U2 4 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA 201B BROADWAY ST, FREDERICK, MD 21701 USA SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD APR PY 1998 VL 52 IS 4 BP 626 EP 628 DI 10.1366/0003702981943987 PG 3 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA ZM180 UT WOS:000073512700023 ER PT J AU Brandes, HK Larimer, FW Lu, TYS Dey, J Hartman, FC AF Brandes, HK Larimer, FW Lu, TYS Dey, J Hartman, FC TI Roles and microenvironments of tryptophanyl residues of spinach phosphoribulokinase SO ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS LA English DT Article DE phosphoribulokinase; active site; tryptophan; mutagenesis; fluorescence ID SITE-DIRECTED MUTAGENESIS; RIBULOSE-5-PHOSPHATE KINASE; RHODOBACTER-SPHAEROIDES; CYSTEINYL RESIDUES; PURIFICATION; EXPRESSION; SEQUENCE; PROTEINS; CLONING; DOMAIN AB Phosphoribulokinase is one of several Calvin cycle enzymes that are light-regulated via the ferredoxin-thioredoxin system (R. A. Wolosiuk and B.B. Buchanan, 1978, Arch. Biochem. Biophys. 189, 97-101). Substitution of the only two Trp residues of the enzyme was prompted by the following goals: to identify each tryptophanyl residue with respect to prior classifications as exposed and buried (C. A. Ghiron ef al., 1988, Arch. Biochem. Biophys. 260, 267-272); to explore the possible active-site location and function of conserved Trp155, as suggested by sequence proximity to catalytic Asp160 (H. A. Charlier ef al., 1991, Biochemistry 33, 9343-9350); and to determine if fluorescence of a Trp residue can serve as a gauge of conformational differences between the reduced (active) and the oxidized (inactive) forms of the enzyme. Emission spectra and acrylamide quenching data demonstrate that Trp155 is solvent exposed, while Trp241 is buried. Kinetic parameters of the W241F mutant are not significantly altered relative to those of wild-type enzyme, thereby discounting any requirement for Trp at position 241. While substitution of Trp155 with Phe or Ala has little impact on V-max, the K-m for Ru5P and ATP are increased substantially; the diminished affinity for ATP is particularly pronounced in the case of the Ala substitution. In further support of an active-site location of Trp155, its fluorescence emission is subject to quenching by nucleotides. Fluorescence quenching of reduced W241F by ATP gives a dissociation constant (K-d) Of 37 mu M, virtually identical with its K-m of 46 mu M, and provides for the first time a direct measurement of the interaction of the kinase with product ADP (K-d of 1.3 mM). Fluorescence quenching of oxidized W241F by ATP reveals a K-d of 28 mM; however, this weakened binding does not reflect an altered microenvironment of Trp155, as its steady-state emission and fluorescence lifetimes are unaffected by the oxidation state. (C) 1998 Academic Press. C1 Oak Ridge Natl Lab, Div Life Sci, Prot Engn Program, Oak Ridge, TN 37831 USA. Univ Tennessee, Oak Ridge Grad Sch Biomed Sci, Oak Ridge, TN 37831 USA. Univ Mississippi, Dept Chem, University, MS 38677 USA. RP Hartman, FC (reprint author), Oak Ridge Natl Lab, Div Life Sci, Prot Engn Program, POB 2009, Oak Ridge, TN 37831 USA. NR 35 TC 7 Z9 7 U1 2 U2 6 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0003-9861 J9 ARCH BIOCHEM BIOPHYS JI Arch. Biochem. Biophys. PD APR 1 PY 1998 VL 352 IS 1 BP 130 EP 136 DI 10.1006/abbi.1998.0580 PG 7 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA ZF421 UT WOS:000072895800016 PM 9521825 ER PT J AU Schechter, PL Gregg, MD Becker, RH Helfand, DJ White, RL AF Schechter, PL Gregg, MD Becker, RH Helfand, DJ White, RL TI The first first gravitationally lensed quasar: FBQ 0951+2635 SO ASTRONOMICAL JOURNAL LA English DT Article DE gravitational lensing; quasars, emission lines; quasars, individual (FBQ 0951+2635) ID GALAXY AB The V = 16.9 quasar FBQ 0951 + 2635 at redshift z = 1.24 appears double on CCD exposures taken in subarcsecond seeing. The two objects are separated by 1." 1 and differ in brightness by 0.9 mag. VLA observations show the radio source to be double with the same separation and position angle. Spectra taken with the Keck II Telescope show the two components to have nearly identical emission-line spectra, but with somewhat different absorption-line systems. Subtraction of two stellar point-spread functions from the pair of components consistently leaves a residual object. Depending upon whether this third object is extended or a point source, it may be as much as 1/10 or as little as 1/100 as bright as the brighter QSO component. The observations leave little doubt that the two brighter objects are gravitationally lensed images of the same quasar. The third object might be either the lensing galaxy or a third image of the quasar, but both interpretations have serious shortcomings. C1 MIT, Dept Phys, Cambridge, MA 02139 USA. Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94450 USA. Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. Columbia Univ, Dept Astron, New York, NY 10027 USA. Space Telescope Sci Inst, Baltimore, MD 21218 USA. RP Schechter, PL (reprint author), MIT, Dept Phys, Room 6-206,77 Massachusetts Ave, Cambridge, MA 02139 USA. NR 19 TC 43 Z9 43 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-6256 J9 ASTRON J JI Astron. J. PD APR PY 1998 VL 115 IS 4 BP 1371 EP 1376 DI 10.1086/300294 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZG635 UT WOS:000073023500011 ER PT J AU Sazonov, SY Sunyaev, RA Terekhov, OV Lund, N Brandt, S Castro-Tirado, AJ AF Sazonov, SY Sunyaev, RA Terekhov, OV Lund, N Brandt, S Castro-Tirado, AJ TI GRANAT/WATCH catalogue of cosmic gamma-ray bursts: December 1989 to September 1994 SO ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES LA English DT Article DE astronomical data bases, miscellaneous; catalogs; gamma rays, bursts ID V/VMAX TEST AB We present the catalogue of gamma-ray bursts (GRB) observed with the WATCH all-sky monitor on board the GRANAT satellite during the period December 1989 to September 1994. The cosmic origin of 95 bursts comprising the catalogue is confirmed either bg their localization with WATCH or by their detection with other GRB experiments. For each burst its time history and information on its intensity in the two energy ranges 8-20 keV and 30-60 keV are presented, Most events show hardening of the energy spectrum near the burst peak. In part of the bursts an X-ray precursor or a tail is seen at 8-20 keV. We have determined the celestial positions of the sources of 47 bursts. Their localization regions (at 3 sigma confidence level) are equivalent in area to circles with radii ranging from 0.2 to 1.6 deg. The burst sources appear isotropically distributed on the sky on large angular scales. C1 Russian Acad Sci, Space Res Inst, Moscow 117810, Russia. Max Planck Inst Astrophys, D-85740 Garching, Germany. Danish Space Res Inst, DK-2100 Copenhagen, Denmark. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. INTA, Lab Astrofis Espacial & Fis Fundamental, Madrid 28080, Spain. RP Sazonov, SY (reprint author), Russian Acad Sci, Space Res Inst, Profsoyuznaya 84-32, Moscow 117810, Russia. OI Castro-Tirado, A. J./0000-0003-2999-3563 NR 18 TC 47 Z9 47 U1 0 U2 1 PU E D P SCIENCES PI LES ULIS CEDEXA PA 7, AVE DU HOGGAR, PARC D ACTIVITES COURTABOEUF, BP 112, F-91944 LES ULIS CEDEXA, FRANCE SN 0365-0138 J9 ASTRON ASTROPHYS SUP JI Astron. Astrophys. Suppl. Ser. PD APR PY 1998 VL 129 IS 1 BP 1 EP 8 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZH242 UT WOS:000073087600001 ER PT J AU Scoccimarro, R Colombi, S Fry, JN Frieman, JA Hivon, E Melott, A AF Scoccimarro, R Colombi, S Fry, JN Frieman, JA Hivon, E Melott, A TI Nonlinear evolution of the bispectrum of cosmological perturbations SO ASTROPHYSICAL JOURNAL LA English DT Article DE large-scale structure of universe; methods, numerical; methods, statistical ID LARGE-SCALE STRUCTURE; POWER-SPECTRUM; GRAVITATIONAL-INSTABILITY; NUMERICAL SIMULATIONS; CORRELATION HIERARCHY; LAGRANGIAN APPROACH; EXPANDING UNIVERSE; REDSHIFT SURVEYS; HIGH-RESOLUTION; COSMIC FIELDS AB The bispectrum B(k(1), k(2), k(3)), the three-point function of density fluctuations in Fourier space, is the lowest order statistic that carries information about the spatial coherence of large-scale structures. For Gaussian initial conditions, when the density fluctuation amplitude is small (delta << 1), tree-level (leading order) perturbation theory predicts a characteristic dependence of the bispectrum on the shape of the triangle formed by the three wave vectors. This configuration dependence provides a signature of gravitational instability, and departures from it in galaxy catalogs can be interpreted as due to bias, that is, nongravitational effects. On the other hand, N-body simulations indicate that the reduced three-point function becomes relatively shape-independent in the strongly nonlinear regime (delta >> 1). In order to understand this nonlinear transition and assess the domain of reliability of shape dependence as a probe of bias, we calculate the one-loop (next-to-leading order) corrections to the bispectrum in perturbation theory. We compare these results with measurements in numerical simulations with scale-free and cold dark matter initial power spectra. We find that the one-loop corrections account very well for the departures from the tree-level results measured in numerical simulations on weakly nonlinear scales (delta less than or similar to 1). In this regime, the reduced bispectrum qualitatively retains its tree-level shape, but the amplitude can change significantly. At smaller scales (delta greater than or similar to 1), the reduced bispectrum in the simulations starts to flatten, an effect that can be partially understood from the one-loop results. In the strong clustering regime, where perturbation theory breaks down entirely, the simulation results confirm that the reduced bispectrum has almost no dependence on triangle shape, in rough agreement with the hierarchical Ansatz. C1 Univ Chicago, Dept Phys, Chicago, IL 60637 USA. Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. Fermi Natl Accelerator Lab, Fermilab Astrophys Ctr, NASA, Batavia, IL 60510 USA. Mclennan Phys Labs, CITA, Toronto, ON M5S 3H8, Canada. Inst Astrophys, CNRS, F-75014 Paris, France. Univ Florida, Dept Phys, Gainesville, FL 32611 USA. Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. Theoret Astrophys Ctr, DK-2100 Copenhagen, Denmark. Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA. RP Scoccimarro, R (reprint author), Univ Chicago, Dept Phys, Chicago, IL 60637 USA. OI Hivon, Eric/0000-0003-1880-2733 NR 74 TC 151 Z9 153 U1 0 U2 3 PU UNIV CHICAGO PRESS PI CHICAGO PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 1 PY 1998 VL 496 IS 2 BP 586 EP 604 DI 10.1086/305399 PN 1 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZG868 UT WOS:000073048100002 ER PT J AU Koenigsberger, G Auer, LH Georgiev, L Guinan, E AF Koenigsberger, G Auer, LH Georgiev, L Guinan, E TI Wind velocity variations in the luminous blue variable-type erupting star of the Wolf-Rayet binary HD 5980 SO ASTROPHYSICAL JOURNAL LA English DT Article DE stars, individual (HD 5980); stars, mass loss; stars, Wolf-Rayet; ultraviolet, stars ID SMALL MAGELLANIC CLOUD; RADIATION-DRIVEN WINDS; SYSTEM HD-5980; MASSIVE STARS; ETA-CARINAE; MODELS; EVOLUTION; SMC AB We present the wind velocity and UV luminosity variations in the Wolf-Rayet system HD 5980 obtained over a time span during which one of the stars of the system was transformed into a luminous blue variable and underwent an eruption. We are able to separate the velocity components of the two stars in the system: a stable velocity component at -1700 km s(-1) is associated with the nonerupting star, while the variable wind with velocities ranging from -500 to -3000 km s(-1) corresponds to the eruptor. The development of a fast wind following the slow wind eruptive phase is observed. Under the assumption of radiatively driven winds, these changing velocities indicate that the radius of the photosphere gradually increased during at least 12 years prior to the 1994 eruption, decreasing rapidly thereafter. An estimate of the stellar parameters indicates that the erupting star is massive (M > 40 M.) and very luminous (L > 10(6) L.), and that during the eruption its radius extended beyond the binary orbit(R* > 100 R.). C1 Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Villanova Univ, Dept Astron & Astrophys, Villanova, PA 19085 USA. RP Koenigsberger, G (reprint author), Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 70-264, Mexico City 04510, DF, Mexico. NR 50 TC 20 Z9 20 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 1 PY 1998 VL 496 IS 2 BP 934 EP 945 DI 10.1086/305398 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZG868 UT WOS:000073048100032 ER PT J AU Liu, WH AF Liu, WH TI Formation and destruction of carbon sulfide in SN 1987A SO ASTROPHYSICAL JOURNAL LA English DT Article DE circumstellar matter; molecular processes; supernovae, individual (SN 1987A) ID INTERSTELLAR CLOUDS; SILICON MONOXIDE; SUPERNOVA 1987A; SN-1987A; COEFFICIENTS; SPECTROSCOPY; CHEMISTRY; GAS AB Mechanisms for formation and destruction of carbon sulfide (CS) molecules in SN 1987A are explored, and a chemistry model of CS is advanced. Partly because of the slow formation of CS due to the low degree of microscopic mixing of carbon and sulfur in the ejecta and mainly because of the rapid destruction of CS by the abundant neutral oxygen, the chemistry predicts a low mass of CS of the order of 10(-11) M. in the supernova. If the 3.88 mu m feature in the late-time infrared spectra of SN 1987A is indeed due to the first overtone emission of CS, the vibrational nu = 2 level of CS in the supernova may be populated more efficiently by Br alpha pumping than by thermal electron impact. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Liu, WH (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 21 TC 3 Z9 3 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 1 PY 1998 VL 496 IS 2 BP 967 EP 970 DI 10.1086/305390 PN 1 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZG868 UT WOS:000073048100034 ER PT J AU Wargelin, BJ Beiersdorfer, P Liedahl, DA Kahn, SM von Goeler, S AF Wargelin, BJ Beiersdorfer, P Liedahl, DA Kahn, SM von Goeler, S TI Observation and modeling of high-n iron L-shell lines from intermediate ion stages SO ASTROPHYSICAL JOURNAL LA English DT Article DE atomic data; line, identification; sun, X-rays, gamma rays; X-rays, general ID X-RAY-SPECTRUM; PLASMAS; FLARES; ATOMS AB The spectra of highly ionized iron species between 7 and 9 Angstrom have been studied using data obtained at the Princeton Large Torus tokamak under plasma conditions similar to those present in solar and stellar flares. The wavelengths of many iron lines are measured with very high accuracy (lambda/Delta lambda up to 4 x 10(4)), along with several other lines in species such as He-like Al XII and Mg XI. Theoretical spectra that predict both the wavelength and the intensity of Fe emission lines are compared with the observed spectra and are used to make accurate line identifications. Virtually all the observed iron lines are found to arise from n = 4, 5, and 6 --> 2 transitions in Fe XXI-XXIV, and many lines are identified for the first time. Several transitions are shown to have diagnostic applications, and a detailed analysis of the density sensitivity of Fe XXII lines is presented. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Wargelin, BJ (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. NR 27 TC 30 Z9 31 U1 1 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5801 S ELLIS AVENUE, CHICAGO, IL 60637 USA SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 1 PY 1998 VL 496 IS 2 BP 1031 EP 1043 DI 10.1086/305410 PN 1 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA ZG868 UT WOS:000073048100039 ER PT J AU Chang, YS Arndt, RL Calori, G Carmichael, GR Streets, DG Su, HP AF Chang, YS Arndt, RL Calori, G Carmichael, GR Streets, DG Su, HP TI Air quality impacts as a result of changes in energy use in China's Jiangsu Province SO ATMOSPHERIC ENVIRONMENT LA English DT Article; Proceedings Paper CT 5th International Conference on Atmospheric Science and Applications to Air Quality CY JUN 18-20, 1996 CL SEATTLE, WASHINGTON SP Amer Meteorol Soc, Air & Waste Management Assoc, US EPA, NASA, World Meteorol Org, US Weather Serv, UNESCO, Comm Sci & Technol Developing Countries, ASIA OCEANIA Network Biol Sci, Univ Iowa, Ctr Global & Reg Environm Res, Univ Washington DE air quality impacts; Jiangsu Province; Shanghai; UR-BAT; human health and ecological impacts ID POLLUTION; MORTALITY AB Potential changes in air quality associated with increases in SO2 emissions resulting from industrial growth for Jiangsu Province and the Shanghai Municipality in China are evaluated for the years 1990 (current) and 2010 (future) with a "no further control" scenario. Two long-range transport models are used to estimate airborne concentrations and deposition of SO2 and sulfate, based on available data on emissions originating from area and major point sources. Modeling results demonstrate how human health and ecological impacts are related to the projected scenario of industrial growth, in terms of the critical level (or concentration) and critical loads. The current approach provides an effective and valuable tool for preliminary assessment of potential impacts of these changes on human health and critical ecosystems in the region for use in integrated energy and environmental risk assessments. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Iowa, Ctr Global & Reg Environm Res, Dept Chem & Biochem Engn, Iowa City, IA 52242 USA. Politecn Milan, Milan, Italy. RP Chang, YS (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. OI Streets, David/0000-0002-0223-1350 NR 11 TC 8 Z9 9 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD APR PY 1998 VL 32 IS 8 BP 1383 EP 1395 DI 10.1016/S1352-2310(97)00134-9 PG 13 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA ZP047 UT WOS:000073711200005 ER PT J AU Marley, NA Gaffney, JS AF Marley, NA Gaffney, JS TI A comparison of flame ionization and ozone chemiluminescence for the determination of atmospheric hydrocarbons SO ATMOSPHERIC ENVIRONMENT LA English DT Article; Proceedings Paper CT 5th International Conference on Atmospheric Science and Applications to Air Quality CY JUN 18-20, 1996 CL SEATTLE, WASHINGTON SP Amer Meteorol Soc, Air & Waste Management Assoc, US EPA, NASA, World Meteorol Org, US Weather Serv, UNESCO, Comm Sci & Technol Developing Countries, ASIA OCEANIA Network Biol Sci, Univ Iowa, Ctr Global & Reg Environm Res, Univ Washington DE relative hydrocarbons; VOCs; FID; natural hydrocarbons; atmospheric chemistry ID CHEMI-LUMINESCENCE; GAS-PHASE AB A reactive hydrocarbon analyzer has been constructed on the basis of chemiluminescence reaction with ozone. This detector is designed to operate at varying temperatures which take advantage of the different rates of reaction of the hydrocarbon classes with ozone to yield a measure of their atmospheric reactivity. When operated at high temperatures (170 degrees C), all hydrocarbons will give a chemiluminescence signal. Reported here is a direct comparison of the ozone chemiluminescent detector (operated at a temperature of 170 degrees C) with a flame ionization detector. This comparison was accomplished by connecting a capillary gas chromatograph to each of the two detectors by means of a switching valve. Twenty-seven compounds representing alkanes, alkenes, aromatics, and oxygenated hydrocarbons (aldehydes, ketones, alcohols, and ethers) were studied. For the compounds studied, analytical sensitivities were 10-1000 times better for the chemiluminescence detector. The results of this comparison indicate that the response of the chemiluminescent detector at 170 degrees C correlates with a total carbon detector (flame ionization detection) and that total response is a measure of total carbon in the sample. The chemiluminescent system will be very useful for gas chromatographic detection of atmospheric hydrocarbons, particularly of oxygenates in complex mixtures. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. RP Marley, NA (reprint author), Argonne Natl Lab, Div Environm Res, Bldg 203,9700 S Cass Ave, Argonne, IL 60439 USA. NR 27 TC 6 Z9 6 U1 1 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD APR PY 1998 VL 32 IS 8 BP 1435 EP 1444 DI 10.1016/S1352-2310(97)00142-8 PG 10 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA ZP047 UT WOS:000073711200010 ER PT J AU Gaffney, JS Bornick, RM Chen, YH Marley, NA AF Gaffney, JS Bornick, RM Chen, YH Marley, NA TI Capillary gas chromatographic analysis of nitrogen dioxide and PANs with luminol chemiluminescent detection SO ATMOSPHERIC ENVIRONMENT LA English DT Article; Proceedings Paper CT 5th International Conference on Atmospheric Science and Applications to Air Quality CY JUN 18-20, 1996 CL SEATTLE, WASHINGTON SP Amer Meteorol Soc, Air & Waste Management Assoc, US EPA, NASA, World Meteorol Org, US Weather Serv, UNESCO, Comm Sci & Technol Developing Countries, ASIA OCEANIA Network Biol Sci, Univ Iowa, Ctr Global & Reg Environm Res, Univ Washington DE nitrogen dioxide; peroxyacyl nitrates; PAN; luminol; chemiluminescent detection ID PEROXYACETYL NITRATE PAN AB Peroxyacyl nitrates (PANs) and nitrogen dioxide are important atmospheric air pollutants in the troposphere. These atmospheric nitrogen species are strongly coupled chemically by a clearly temperature-dependent equilibrium in the troposphere. A chemical method that can measure both nitrogen dioxide and PANs rapidly and with sub-part-per-billion detection is described that is based upon a modified luminol detection system coupled to a capillary gas chromatographic column by using helium as a carrier. The system can readily separate and detect nitrogen dioxide, peroxyacetyl nitrate, peroxyproprionyl nitrate, and peroxybutyrl nitrate with detection limits in the low tens of parts per trillion with total analysis time of less than 1 min. Calibration of PAN by thermal decomposition to nitrogen dioxide is demonstrated with PAN detection sensitivities approximately 75% of the sensitivities observed for NO2 luminol detection by using helium as a carrier gas. The advantages of this method for simultaneous measurement of nitrogen dioxide and PANs over ozone chemiluminescent detection and electron capture detection are discussed, as well as potential applications of this method for heterogeneous surface chemistry studies of PANS and nitrogen dioxide and for tropospheric measurements. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. RP Gaffney, JS (reprint author), Argonne Natl Lab, Div Environm Res, Bldg 203,9700 S Cass Ave, Argonne, IL 60439 USA. NR 22 TC 32 Z9 33 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD APR PY 1998 VL 32 IS 8 BP 1445 EP 1454 DI 10.1016/S1352-2310(97)00098-8 PG 10 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA ZP047 UT WOS:000073711200011 ER PT J AU Novoderezhkin, VI Taisova, AS Fetisova, Z Blankenship, RE Savikhin, S Buck, DR Struve, WS AF Novoderezhkin, VI Taisova, AS Fetisova, Z Blankenship, RE Savikhin, S Buck, DR Struve, WS TI Energy transfers in the B808-866 antenna from the green bacterium Chloroflexus aurantiacus SO BIOPHYSICAL JOURNAL LA English DT Article ID PUMP-PROBE SPECTROSCOPY; PIGMENT-PROTEIN COMPLEXES; LIGHT-HARVESTING COMPLEX; AMINO-ACID SEQUENCE; RHODOBACTER-SPHAEROIDES; PURPLE BACTERIA; PHOTOSYNTHETIC BACTERIA; CYTOPLASMIC MEMBRANE; RHODOPSEUDOMONAS-ACIDOPHILA; CHLOROSOME ANTENNAS AB Energy transfers within the B808-866 BChl a antenna in chlorosome-membrane complexes from the green photosynthetic bacterium Chloroflexus aurantiacus were studied in two-color pump-probe experiments at room temperature. The steady-state spectroscopy and protein sequence of the B808-866 complex are reminiscent of well-studied LH2 antennas from purple bacteria. B808-->B866 energy transfers occur with similar to 2 ps kinetics; this is slower by a factor of similar to 2 than B800-->B850 energy transfers in LH2 complexes from Rhodopseudomonas acidophila or Rhodobacter sphaeroides. Anisotropy studies show no evidence for intra-B808 energy transfers before the B808-->B866 step; intra-B866 processes are reflected in 350-550 fs anisotropy decays. Two-color anisotropies under 808 nm excitation suggest the presence of a B808-->B866 channel arising either from direct laser excitation of upper B866 exciton components that overlap the B808 absorption band or from excitation of B866 vibronic bands in nontotally symmetric modes. C1 Iowa State Univ, Dept Chem, Ames, IA 50011 USA. Iowa State Univ, USDOE, Ames Lab, Ames, IA 50011 USA. Arizona State Univ, Dept Biochem & Chem, Tempe, AZ 85287 USA. Arizona State Univ, Ctr Early Events Photosynth, Tempe, AZ 85287 USA. Moscow MV Lomonosov State Univ, AN Belozersky Inst Physicochem Biol, Moscow 119899, Russia. RP Struve, WS (reprint author), Iowa State Univ, Dept Chem, Gilman Hall, Ames, IA 50011 USA. EM wstruve@ameslab.gov RI Novoderezhkin, Vladimir/K-1329-2013; Taisova, Alexandra/K-1334-2013; OI Novoderezhkin, Vladimir/0000-0003-4583-5725 NR 41 TC 21 Z9 22 U1 0 U2 3 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 USA SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD APR PY 1998 VL 74 IS 4 BP 2069 EP 2075 PG 7 WC Biophysics SC Biophysics GA ZL048 UT WOS:000073393600040 PM 9545065 ER PT J AU Boopathy, R AF Boopathy, R TI Biological treatment of swine waste using anaerobic baffled reactors SO BIORESOURCE TECHNOLOGY LA English DT Article DE anaerobic digestion; anaerobic baffled reactor; swine manure; retention time; COD ID MANURE AB Four laboratory-scale anaerobic baffled reactors (with two, three, foul; and five chambers, respectively) were used to successfully treat whole swine waste. The baffled reactors did an excellent job of trapping the small diameter methane-containing particles of proteins, cellulose, hemicellulose, and lipids. Solids retention times of 25, 30, 36, and 42 days were achieved with a corresponding hydraulic retention time of 14 days for two-, three-, four- and five-chamber anaerobic baffled reactors, respectively COD reductions ranged from 70 to 78% among all the reactors studied. Maximum methane production was observed in the reactors with four and five chambers with a value of 0.59 and 0.62 l/g of volatile solids added at a loading of 4 g VS/l/day, respectively. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. RP Boopathy, R (reprint author), Argonne Natl Lab, Div Environm Res, Bldg 203, Argonne, IL 60439 USA. NR 19 TC 42 Z9 56 U1 2 U2 12 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0960-8524 J9 BIORESOURCE TECHNOL JI Bioresour. Technol. PD APR PY 1998 VL 64 IS 1 BP 1 EP 6 DI 10.1016/S0960-8524(97)00178-8 PG 6 WC Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels SC Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels GA ZK561 UT WOS:000073337400001 ER PT J AU Mather, JH Ackerman, TP Clements, WE Barnes, FJ Ivey, MD Hatfield, LD Reynolds, RM AF Mather, JH Ackerman, TP Clements, WE Barnes, FJ Ivey, MD Hatfield, LD Reynolds, RM TI An Atmospheric Radiation and Cloud Station in the tropical western Pacific SO BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY LA English DT Article ID TOGA-COARE; PROGRAM; ANVILS; SYSTEM; ARRAY; OCEAN AB The interaction of clouds and radiation is a particularly difficult issue in the study of climate change. Clouds have a large impact on the earth's radiation budget but the range of spatial and temporal scales and the complexity of the physical processes associated with clouds made these interactions difficult to simulate. The Department of Energy's Atmospheric Radiation Measurement (ARM) program was established to improve the understanding of the interaction of radiation with the atmosphere with a particular emphasis on the effects of clouds. To continue its role of providing data for the study of these interactions, the ARM program deployed an Atmospheric Radiation and Cloud Station (ARCS) in the tropical western Pacific. This site began operation in October 1996. The tropical western Pacific is a very important climatic region. It is characterized by strong solar heating, high water vapor concentrations, and active convection. The ARCS is equipped with a comprehensive suite of instruments for measuring surface radiation fluxes and properties of the atmospheric state and is intended to operate for the next 10 years. The ARCS is an integrated unit that includes a data management system, a site monitor and control system, an external communications system, redundant electrical power systems, and containers that provide shelter for the equipment as well as work space for site operators, technicians, and visiting scientists. The dataset the ARCS produces will be invaluable in studying issues related to clouds and radiation in the Tropics. The site is located in Manus Province, Papua New Guinea, at 2.060 degrees S, 147.425 degrees E, 300 km north of the island of New Guinea. Two more ARCS are planned for deployment across the tropical Pacific. C1 Penn State Univ, Dept Meteorol, University Pk, PA 16802 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Pacific NW Natl Lab, Richland, WA USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RP Mather, JH (reprint author), Penn State Univ, Dept Meteorol, 503 Walker Bldg, University Pk, PA 16802 USA. NR 29 TC 51 Z9 51 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0003-0007 J9 B AM METEOROL SOC JI Bull. Amer. Meteorol. Soc. PD APR PY 1998 VL 79 IS 4 BP 627 EP 642 DI 10.1175/1520-0477(1998)079<0627:AARACS>2.0.CO;2 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA ZK039 UT WOS:000073278800004 ER PT J AU Hartse, HE Flores, RA Johnson, PA AF Hartse, HE Flores, RA Johnson, PA TI Correcting regional seismic discriminants for path effects in western China SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID WAVE PROPAGATION; EXPLOSIONS; PHASE AB The effect of path on regional seismic wave propagation can be significant. In an effort to improve discriminant performance, we explore the effect of path upon P-g/L-g ratios. Our primary objective is to find path corrections that reduce scatter within earthquake and explosion ratio populations, while at the same time increasing the separation between the two populations. We emphasize the 1.5- to 3-Hz and 2- to 4-Hz bands, as P-g and L-g in these bands can often be observed at smaller magnitudes and greater distances than higher-frequency bands, which have previously been shown to be reliable discriminants. For data, we use 271 earthquakes from northwest China, 25 nuclear explosions from the Kazakh test site (KTS), and one nuclear explosion from the Lop Nor test site recorded at station WMQ. We also use 185 earthquakes from the same region and seven nuclear explosion from the Lop Nor test site recorded at station AAK. Event-station distances range from 200 to 1400 km, earthquake magnitudes range between m(b) 2.5 and 6.2, and explosion magnitudes range between m(b) 4.5 and 6.5. In addition to ratio-distance trends, we examine P-g/L-g ratio-parameter trends related to topography, basin thickness, and crustal thickness. The parameters we consider are mean, roughness, gradient mean, and gradient roughness of the topography, basin thickness, and crustal thickness along each event-station path. We also consider the same parameters after weighting by path length. Through linear regressions, we found path corrections that reduce scatter within event populations, and we also found path corrections that increase the separation between earthquakes and KTS explosions recorded at WMQ. We obtained the best improvement in discrimination performance at WMQ by removing the trends of topography roughness, mean topography, and the gradient of basin thickness after weighting the parameters by path length. For AAK, we found that removing the trends of mean topography and the basement roughness improved discrimination performance over the uncorrected case. However, unlike WMQ, weighting these parameters by path length degraded discriminant performance. Because we see no predictable or repeatable trends for "adjacent" central Asian stations and overlapping regions of interest, we recommend an even more empirical approach to correcting for the effect of path. Where earthquakes are abundant, such as the Tian Shan, contouring a grid of ratio residuals (for each band of interest) may be a simpler method of finding appropriate path corrections. C1 Univ Calif Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. RP Hartse, HE (reprint author), Univ Calif Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. NR 14 TC 17 Z9 19 U1 0 U2 0 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 USA SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD APR PY 1998 VL 88 IS 2 BP 596 EP 608 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZJ391 UT WOS:000073210300022 ER PT J AU Sagi, J Chenna, A Hang, B Singer, B AF Sagi, J Chenna, A Hang, B Singer, B TI A single cyclic p-benzoquinone adduct can destabilize a DNA oligonucleotide duplex SO CHEMICAL RESEARCH IN TOXICOLOGY LA English DT Article ID MELTING THERMODYNAMICS; THERMAL-STABILITY; BASE-PAIRS; BENZENE; SITE; CONFORMATION; METABOLITES; MISMATCHES AB p-Benzoquinone (p-BQ), a stable metabolite of the human carcinogen benzene, forms two-ring benzetheno exocyclic base adducts with C, A, and CT bases in DNA. As a part of a project for studying the biological effect of the p-BQ adducts, we report here on the first biophysical characterization of oligodeoxyribonucleotide duplexes containing a single site-specific p-BQ-C, using thermal denaturation and circular dichroism (CD). We find that the thermal and thermodynamic stabilities of the control duplex are reduced by p-BQ-C. The T-m value decreases by 12.6 degrees C at the duplex concentration of 1.5 mu M and the Delta G degrees by 10.2 kcal/mol. The latter was determined from the concentration dependence of the T-m values. The destabilization has little dependence on the nature of the opposite base. This reduction is higher than that of the single base mismatches studied (-4.9 to -7.9 kcal/mol) and is close to that observed with an adjacent double mismatch-containing duplex(-11.3 kcal/mol). The overall B-conformation of the duplex with a p-BQ-C is, however, only slightly altered, relative to the parent duplex, as shown by CD spectra. The p-BQ-C-containing duplex has been found recently to be a good substrate for the major human AP endonuclease as compared to an abasic site-containing duplex [Hang, B., et al. (1997) Biochemistry 36, 15411-15418]. We now find that the thermodynamic properties and the localized conformational changes of a p-BQ-C-containing duplex are apparently related to those reported for a duplex containing an abasic site. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Donner Lab, Berkeley, CA 94720 USA. Hungarian Acad Sci, Cent Res Inst Chem, H-1525 Budapest, Hungary. RP Singer, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Donner Lab, Berkeley, CA 94720 USA. FU NCI NIH HHS [CA 47723]; NIEHS NIH HHS [ES 07363] NR 37 TC 11 Z9 11 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0893-228X J9 CHEM RES TOXICOL JI Chem. Res. Toxicol. PD APR PY 1998 VL 11 IS 4 BP 329 EP 334 DI 10.1021/tx9701992 PG 6 WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Toxicology SC Pharmacology & Pharmacy; Chemistry; Toxicology GA ZK022 UT WOS:000073277100011 PM 9548803 ER PT J AU Shapiro, R Ellis, S Hingerty, BE Broyde, S AF Shapiro, R Ellis, S Hingerty, BE Broyde, S TI Effect of ring size on conformations of aromatic amine-DNA adducts: The aniline-C8 guanine adduct resides in the B-DNA major groove SO CHEMICAL RESEARCH IN TOXICOLOGY LA English DT Article ID 2 INTERCHANGEABLE CONFORMATIONS; COMPUTATIONAL CHARACTERIZATION; 2-AMINOFLUORENE-MODIFIED DNA; HETEROCYCLIC AMINES; EXCISION-REPAIR; DUPLEX; NMR; EXPOSURE; SEQUENCE; CANCER AB While the one-ring amine aniline (AN) has only slight genetic activity, the polycyclic aromatic amines 2-aminofluorene (AF) and 1-aminopyrene (AP) are significant mutagens and carcinogens. Moreover, the bulkier AP is more mutagenic per adduct than AF in the tetracycline-resistance gene of plasmid pBR322 [Melchior et al. (1994) Carcinogenesis 15, 889]. To elucidate possible conformational origins of the differing mutagenic effects of these three adducts, which may stem from their differing ring sizes, we have examined their conformations in two mutation-susceptible sequences from the above gene: TTGAG*GCCG (sequence I) and GAATG*GTGC (sequence II), where G* = C8-modified guanine. No experimental high-resolution NMR data are yet available for the aniline adduct in a DNA duplex. Minimized potential energy calculations were carried out, using the molecular mechanics program DUPLEX to explore the conformation space of these adducts. In the case of AN, a relatively unperturbed B-DNA helix with the amine in the major groove was strongly favored in both sequences. In the case of AF- and AP-modified DNA, however, several differing conformations were competitive in energy. They included major groove structures, as well as conformations with syn-modified guanine and the polycyclic amine in the minor groove, or the amine rings intercalated into the helix with displacement of the modified guanine, in overall harmony with high-resolution NMR solution structures. Thus, aniline distorts DNA structure to a lesser extent than larger aromatic amine ring systems, since a number of different conformations are energetically feasible and have been observed for the larger systems. This result may be relevant to their enhanced mutagenicity and their repair propensity, in contrast to aniline's low mutagenic effect. C1 NYU, Dept Chem, New York, NY 10003 USA. NYU, Dept Biol, New York, NY 10003 USA. Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. RP Shapiro, R (reprint author), NYU, Dept Chem, 4 Washington Pl, New York, NY 10003 USA. FU NCI NIH HHS [CA 28038, CA 75449]; NCRR NIH HHS [RR 06548] NR 49 TC 22 Z9 22 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0893-228X J9 CHEM RES TOXICOL JI Chem. Res. Toxicol. PD APR PY 1998 VL 11 IS 4 BP 335 EP 341 DI 10.1021/tx970211q PG 7 WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Toxicology SC Pharmacology & Pharmacy; Chemistry; Toxicology GA ZK022 UT WOS:000073277100012 PM 9548804 ER PT J AU Carrado, KA Thiyagarajan, P Song, K Winans, RE AF Carrado, KA Thiyagarajan, P Song, K Winans, RE TI Anomalous small-angle X-ray scattering studies of interlayer heavy metal ions in clay minerals SO CHEMISTRY OF MATERIALS LA English DT Article ID ASAXS; ALLOYS; MONTMORILLONITE; ABSORPTION; SAXS AB Anomalous small-angle X-ray scattering (ASAXS) has been exploited to monitor the solvation behavior of transition metal and lanthanide ions within the interlayers of the natural aluminosilicate clay mineral montmorillonite. The ASAXS technique can reveal the distribution of specific metallic species within a multicomponent and disordered matrix, which is typical of the semicrystalline smectite clays. The variations of scattering signal intensity as a function of absorption energy were monitored for Cu(II)-, Er(III)-, and Yb(III)-clays as a function of hydration. Two different hydration levels were probed: as prepared at ambient conditions, or so-called "dry" powders, and "wet" pastes. ASAXS intensities increase as the energy of the probing X-rays approaches the absorption energy of a given metal ion if it is associated with the interlayer solvent (water in this case) and decrease if the metal ion is associated with the solid matrix. The results show that (1) the ions are always associated with the clay in some fashion (they do not wash out into solution upon hydration, for example), (2) Cu(II) is well solvated within the interlayers of the clay especially the wet sample, as expected, and (3) the lanthanide ions Er(III) and Yb(III) have associated with the clay interlayer surface, most likely as small hydrolyzed species even though the pH is well below the pK(h) values. The latter ASAXS measurements provide the first direct evidence of this lanthanide hydrolysis phenomenon within clay interlayers, which has previously been inferred from elemental analysis and IR information. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. Argonne Natl Lab, Div Intense Pulsed Neutron Source, Argonne, IL 60439 USA. RP Carrado, KA (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. EM kcarrado@anl.gov NR 31 TC 4 Z9 4 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD APR PY 1998 VL 10 IS 4 BP 1130 EP 1134 DI 10.1021/cm970723q PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA ZK055 UT WOS:000073280400029 ER PT J AU Weiner, SA Cranford, B Chum, H AF Weiner, SA Cranford, B Chum, H TI The chemical industry of the future: Two views SO CHEMTECH LA English DT Article C1 Pacific NW Lab, Richland, WA 99352 USA. US DOE, Off Ind Technol, Washington, DC USA. Natl Renewable Energy Lab, Ctr Renewable Chem Technol & Mat, Golden, CO 80401 USA. RP Weiner, SA (reprint author), Pacific NW Lab, POB 999, Richland, WA 99352 USA. NR 4 TC 2 Z9 2 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0009-2703 J9 CHEMTECH JI Chemtech PD APR PY 1998 VL 28 IS 4 BP 10 EP 15 PG 6 WC Chemistry, Applied SC Chemistry GA ZG205 UT WOS:000072977700004 ER PT J AU Ostenson, JE Finnemore, DK AF Ostenson, JE Finnemore, DK TI Magnetization of stripe phase superconductors SO CHINESE JOURNAL OF PHYSICS LA English DT Article; Proceedings Paper CT 1997 Taiwan International Conference on Superconductivity (TICS 97) and 5th Workshop on Low Temperature Physics (WLTP 5) CY AUG 13-16, 1997 CL ACAD SINICA, TAIPEI, TAIWAN SP Minist Educ, Natl Sci Council, Acad Sinica HO ACAD SINICA ID REVERSIBLE MAGNETIZATION; MODEL AB Magnetization measurements have been carried out for superconducting La1.45Nd0.40 Sr0.15CuO4 in order to determine whether the the shape of the magnetization vs field (M vs H) curves for a stripe phase material are similar to classical superconductors and to other high temperature superconductors. Neutron scattering data have shown that this material is an antiphase domain antiferromagnet in which the holes collect in the domain walls of the antiphase domain structure. With this localization of holes, the superconducting order parameter might be space dependent and the vortex lattice might be different from ordinary Type II superconductors. A large region of thermodynamic reversibility is found, and the flux expulsion data show that this material is a good bulk superconductor with a free energy difference between the superconducting and normal state very similar to a, classical superconductor like Nb. The shape of the magnetization curves (M vs H), however, has a double peak structure that is quite different from the predictions of classical Type II behavior and different from Y(123). C1 US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. RP Ostenson, JE (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA. NR 11 TC 1 Z9 1 U1 0 U2 0 PU PHYSICAL SOC REPUBLIC CHINA PI TAIPEI PA CHINESE JOURNAL PHYSICS PO BOX 23-30, TAIPEI 10764, TAIWAN SN 0577-9073 J9 CHINESE J PHYS JI Chin. J. Phys. PD APR PY 1998 VL 36 IS 2 BP 297 EP 301 PN 2 PG 5 WC Physics, Multidisciplinary SC Physics GA ZL215 UT WOS:000073410300024 ER PT J AU Harris, LN Yang, L Tang, C Yang, DJ Lupu, R AF Harris, LN Yang, L Tang, C Yang, DJ Lupu, R TI Induction of sensitivity to doxorubicin and etoposide by transfection of MCF-7 breast cancer cells with heregulin beta-2 SO CLINICAL CANCER RESEARCH LA English DT Article ID MAMMARY-TUMOR CELLS; GROWTH-FACTOR; NEU ONCOGENE; RECEPTOR; EXPRESSION; LIGAND; OVEREXPRESSION; AMPLIFICATION; PROLIFERATION; GLYCOPROTEIN AB HER2 (erbB-2) proto-oncogene amplification and/or overexpression correlate with poor prognosis in many malignancies, The precise biological role of this oncogenic signaling pathway (which also involves the HER4 gene) in breast cancer is unclear, One property conferred by this oncogene relates to response to drug therapy, Clinical studies support an association between HER2 overexpression and resistance to alkylating agents (cisplatinum and cyclophosphamide), Data from the Cancer and Leukemia Group B 8869/8541 study indicate enhanced dose responsiveness to doxorubicin (Adriamycin) in patients who overexpress the HER2 receptor, Heregulin beta-2, a naturally occurring ligand that activates the HER2 receptor by inducing its heterodimerization with the HER4 receptor, has recently been cloned, The ability of this ligand to phosphorylate the HER2 receptor exogenously allows us to study the effect of HER2 activation on cancer cell behavior, To study the relationship between chemotherapy response and activation of HER2, MCF-7 cells expressing biologically active heregulin were assessed for response to doxorubicin and etoposide, both of which are topoisomerase Do (topo II alpha) inhibitors, Several clones show markedly increased sensitivity to these drugs, In addition, the same wild-type MCF-7 cells transfected with heregulin beta-2 under the control of an inducible promoter also show this dose-response relationship to doxorubicin after the expression of heregulin beta-2 is activated by zinc, The modulation of topo II alpha was studied in the cell lines transfected with heregulin, topo II alpha mRNA and protein (total protein and enzymatic decatenating activity) were found to be up-regulated in heregulin beta-2-transfected cells, Moreover, topo II alpha promoter activity was also modestly increased in heregulin beta-2-transfected cells, Because up-regulation of topo II alpha in vitro and in clinical specimens is associated with increased response to doxorubicin (presumptively by an increase in drug substrate), this may be the mechanism of the increased sensitivity to doxorubicin seen in heregulin beta-2-transfected cells, This implies that activation of HER2 or one of the other members of the receptor family may increase sensitivity to doxorubicin by up-regulation of topo II alpha. This finding suggests the use of receptor/ligand expression to direct patient-specific therapeutic choices (e,g,, doxorubicin versus alkylator-based regimens) and the use of biological agents (such as heregulin) in combination with certain chemotherapeutic agents to enhance response to treatment in breast cancer patients. C1 Univ Calif Berkeley, Berkeley, CA 94720 USA. Georgetown Univ, Med Ctr, Vincent T Lombardi Canc Res Ctr, Washington, DC 20007 USA. Duke Univ, Med Ctr, Durham, NC USA. RP Lupu, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,Bldg 934, Berkeley, CA 94710 USA. NR 33 TC 39 Z9 41 U1 0 U2 0 PU AMER ASSOC CANCER RESEARCH PI BIRMINGHAM PA PO BOX 11806, BIRMINGHAM, AL 35202 USA SN 1078-0432 J9 CLIN CANCER RES JI Clin. Cancer Res. PD APR PY 1998 VL 4 IS 4 BP 1005 EP 1012 PG 8 WC Oncology SC Oncology GA ZG200 UT WOS:000072977200023 PM 9563896 ER PT J AU Hurt, R Sun, JK Lunden, M AF Hurt, R Sun, JK Lunden, M TI A kinetic model of carbon burnout in pulverized coal combustion SO COMBUSTION AND FLAME LA English DT Article ID RESIDUAL CARBON; FIRED BOILERS; FLY-ASH; REACTIVITY; CHAR; RATES AB The degree of carbon burnout is an important operating characteristic of full-scale suspension-fired coal combustion systems. Prediction of carbon loss requires special char combustion kinetics valid through the very high conversions targeted in industry (typically >99.5%), and valid for a wide range of particle temperature histories occurring in full-scale furnaces. The present paper presents high-temperature kinetic data for five coal chars in the form of time-resolved burning profiles that include the late stages of combustion. The paper then describes the development and validation of the Carbon Burnout Kinetic Model (CBK), a coal-general kinetics package that is specifically designed to predict the total extent of carbon burnout and ultimate fly ash carbon content for prescribed temperature/oxygen histories typical of pulverized coal combustion systems. The model combines the single-film treatment of char oxidation with quantitative descriptions of thermal annealing, statistical kinetics, statistical densities, and ash inhibition in the late stages of combustion. In agreement with experimental observations, the CBK model predicts (1) low reactivities for unburned carbon residues extracted from commercial ash samples, (2) reactivity loss in the late stages of laboratory combustion, (3) the observed sensitivity of char reactivity to high-temperature heat treatment on second and subsecond time scales, and (4) the global reaction inhibition by mineral matter in the late stages of combustion observed in single-particle imaging studies. The model ascribes these various char deactivation phenomena to the combined effects of thermal annealing, ash inhibition, and the preferential consumption of more reactive particles (statistical kinetics), the relative contributions of which vary greatly with combustion conditions. (C) 1998 by The Combustion Institute. C1 Brown Univ, Div Engn, Providence, RI 02912 USA. Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA. RP Hurt, R (reprint author), Brown Univ, Div Engn, Providence, RI 02912 USA. NR 39 TC 186 Z9 194 U1 5 U2 55 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD APR PY 1998 VL 113 IS 1-2 BP 181 EP 197 DI 10.1016/S0010-2180(97)00240-X PG 17 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA YW128 UT WOS:000071900700014 ER PT J AU Steinacker, H AF Steinacker, H TI Finite dimensional unitary representations of quantum Anti-de sitter groups at roots of unity SO COMMUNICATIONS IN MATHEMATICAL PHYSICS LA English DT Article ID POINCARE ALGEBRA; ELEMENTARY-PARTICLES; CURVED SPACE; SPIN FIELDS; R-MATRIX; MASSLESS; SINGLETONS; DEFORMATIONS AB We study irreducible unitary representations of U-q(SO(2, 1)) and U-q(SO(2, 3)) for q a root of unity, which are finite dimensional. Among others, unitary representations corresponding to all classical one particle representations with integral weights are found for q = e(i pi/M), With M being large enough. In the "massless" case with spin bigger than or equal to I in 4 dimensions, they are unitarizable only after factoring out a subspace of "pure gauges" as classically. A truncated associative tensor product describing unitary many-particle representations is defined for q = e(i pi/M). C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RP Steinacker, H (reprint author), Ludwigs Maximillian Univ, Lehrstuhl Prof Wess, Theresienstr 37, D-80333 Munchen, Germany. EM hsteinac@physics.berkeley.edu OI Steinacker, Harold/0000-0002-3440-8827 NR 48 TC 14 Z9 14 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0010-3616 J9 COMMUN MATH PHYS JI Commun. Math. Phys. PD APR PY 1998 VL 192 IS 3 BP 687 EP 706 DI 10.1007/s002200050315 PG 20 WC Physics, Mathematical SC Physics GA ZL766 UT WOS:000073469400010 ER PT J AU Minev, PD Gresho, PM AF Minev, PD Gresho, PM TI A remark on pressure correction schemes for transient viscous incompressible flow SO COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING LA English DT Article DE pressure-correction scheme; incompressible flow; spurious boundary layer ID NAVIER-STOKES EQUATIONS AB The paper presents a discussion of some phenomena related to the pressure-correction scheme implemented in a spectral element or finite element context. Of particular interest are the spurious boundary layers created around prescribed boundaries in which the pressure exhibits spurious behaviour. The flow is very prone to singular behaviour, especially around geometrical singularities. That is why this phenomenon is studied using as an example the flow in a diverging channel with sharp changes in the angle. The reasons for, and a possible remedy to, the singular (and aphysical) behaviour of the numerical solution are discussed. The results of the numerical experiments clearly support the conclusions of this discussion. (C) 1998 John Wiley & Sons, Ltd. C1 Eindhoven Univ Technol, Stevin Ctr Comp & Exp Engn Sci, NL-5600 MB Eindhoven, Netherlands. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Minev, PD (reprint author), Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada. NR 13 TC 3 Z9 3 U1 0 U2 3 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX PO19 1UD, ENGLAND SN 1069-8299 J9 COMMUN NUMER METH EN JI Commun. Numer. Methods Eng. PD APR PY 1998 VL 14 IS 4 BP 335 EP 346 DI 10.1002/(SICI)1099-0887(199804)14:4<335::AID-CNM151>3.0.CO;2-C PG 12 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA ZJ589 UT WOS:000073231900005 ER PT J AU Winter, VL Covan, JM Dalton, LJ AF Winter, VL Covan, JM Dalton, LJ TI Passive safety in high-consequence systems SO COMPUTER LA English DT Article AB In "Passive Safety in High-Consequence Systems," Victor L. Winter, John M. Covan, and Larry J. Dalton discuss the design principles behind passive safety, which means that a system is not required to initiate any action to arrive at a safe state. C1 Sandia Natl Labs, High Integr Software Program, AST Software Construct Methodol, Livermore, CA 94550 USA. Sandia Natl Labs, High Consequence Surety Engn Dept, Livermore, CA 94550 USA. RP Winter, VL (reprint author), Sandia Natl Labs, High Integr Software Program, AST Software Construct Methodol, Livermore, CA 94550 USA. NR 1 TC 7 Z9 7 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA SN 0018-9162 J9 COMPUTER JI Computer PD APR PY 1998 VL 31 IS 4 BP 35 EP + PG 4 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA ZE232 UT WOS:000072771400016 ER PT J AU Bieber, M Hall, W Marshall, C Retallack, DS Vercoustre, AM White, B AF Bieber, M Hall, W Marshall, C Retallack, DS Vercoustre, AM White, B TI Will hypertext become the Web's missing link? SO COMPUTER NETWORKS AND ISDN SYSTEMS LA English DT Editorial Material AB Hypertext researchers complain that the Web incorporates a very rudimentary implementation of hypertext. Hypertext research has been on-going since the late 1950s with the first major research systems developed in the early 1960s. Yet the Web seems to have ignored most of the lessons learned by the hypertext research community. The Web community claims that the held is still open Bride, and invites the hypertext community to participate, both by leading with examples on the Web and joining standards organizations. This panel explores the role, hype, promise and future for hypertext in Web environments in a provocative and lively manner. The moderator will begin the panel by briefly reviewing the kinds of hypermedia features often not supported in Web environments. C1 New Jersey Inst Technol, CIS Dept, Newark, NJ 07102 USA. Univ Southampton, Multimedia Res Grp, Southampton SO9 5NH, Hants, England. Xerox Corp, Palo Alto Res Ctr, Palo Alto, CA USA. Boeing Co, Shared Serv Grp, Seattle, WA 98124 USA. INRIA, Le Chesnay, France. CSIRO, Math & Informat Sci, Carlton, Vic, Australia. Stanford Linear Accelerator Ctr, Stanford, CA USA. New Jersey Inst Technol, Interact Learning Ctr, Newark, NJ 07102 USA. New Jersey Inst Technol, Digital Lib Res Ctr, Newark, NJ 07102 USA. Univ Southampton, Dept Elect & Comp Sci, Southampton SO9 5NH, Hants, England. RP Bieber, M (reprint author), New Jersey Inst Technol, CIS Dept, Newark, NJ 07102 USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-7552 J9 COMPUT NETWORKS ISDN JI Comput. Netw. ISDN Syst. PD APR PY 1998 VL 30 IS 1-7 BP 754 EP 756 DI 10.1016/S0169-7552(98)00132-9 PG 3 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA ZK763 UT WOS:000073360600119 ER PT J AU Ritley, KA Ghosh, VJ Lynn, KG McKeown, M Welch, DO AF Ritley, KA Ghosh, VJ Lynn, KG McKeown, M Welch, DO TI POS-SPRITE - an extensible calculation of positron and electron implantation in metals SO COMPUTER PHYSICS COMMUNICATIONS LA English DT Article DE Monte Carlo; positron; electron; implantation; scattering; backscattering; transmission; particle; reemission; Fortran ID MONTE-CARLO SIMULATION; MULTILAYER SYSTEMS; ENERGY POSITRON; THIN-FILMS; SOLIDS; SCATTERING; PROFILES; LOSSES; ATOMS AB Accurately modeling the behavior of a beam of positrons incident upon a solid is of crucial importance for depth-profiling and data analysis in slow positron experiments. We describe a suite of Fortran programs to perform a Monte Carlo calculation of positron implantation in amorphous metals and small bandgap semiconductors. This provides statistical information about penetration (stopping profiles, thermalization time, etc.), energy loss and reemission (backscattering, thin film transmission, etc.), The calculation is implemented using a user-friendly Monte Carlo transport "engine", which is capable of treating particle transport in infinite, semi-infinite, and multilayer systems. A contingent of elastic (up to 10 keV) and inelastic (down to 30 eV) scattering mechanisms is included, but different mechanisms can be added via external data files or code modification. As a consequence of the scattering theory involved, this calculation is amenable to electron implantation and scattering. (C) 1998 Elsevier Science B.V. C1 Univ Illinois, Dept Phys, Urbana, IL 61801 USA. Univ Illinois, Mat Res Lab, Urbana, IL 61801 USA. Brookhaven Natl Lab, Dept Appl Sci, Upton, NY 11973 USA. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Ritley, KA (reprint author), Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA. EM k-ritley@uiuc.edu NR 48 TC 3 Z9 3 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0010-4655 J9 COMPUT PHYS COMMUN JI Comput. Phys. Commun. PD APR PY 1998 VL 109 IS 2-3 BP 93 EP 110 DI 10.1016/S0010-4655(98)00008-3 PG 18 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA ZL307 UT WOS:000073419500001 ER PT J AU Dongarra, JJ Hammarling, S Walker, DW AF Dongarra, JJ Hammarling, S Walker, DW TI Key concepts for parallel out-of-core LU factorization SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE out-of-core LU factorization; dense matrices; parallel computing; performance ID LINEAR ALGEBRA SUBPROGRAMS; SET AB This paper considers key ideas in the design of out-of-core dense LU factorization routines. A left-looking variant of the LU factorization algorithm is shown to require less I/O to disk than the right-looking variant, and is used to develop a parallel, out-of-core implementation. This implementation makes use of a small library of parallel I/O routines, together with ScaLAPACK and PBLAS routines. Results for runs on an Intel Paragon are presented and interpreted using a simple performance model. C1 Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. NAG Ltd, Oxford OX2 8DR, England. Oak Ridge Natl Lab, Math Sci Sect, Oak Ridge, TN 37831 USA. RP Dongarra, JJ (reprint author), Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. RI Walker, David/B-7978-2010; Dongarra, Jack/E-3987-2014; OI Walker, David/0000-0002-1360-6330 NR 18 TC 8 Z9 11 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 13 EP 31 DI 10.1016/S0898-1221(98)00029-7 PG 19 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000003 ER PT J AU Saied, F Mahinthakumar, G AF Saied, F Mahinthakumar, G TI Efficient parallel multigrid based solvers for large scale groundwater flow simulations SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE hydrology; multiprocessors; numerical methods; partial differential equations; multigrid method ID POISSON-BOLTZMANN EQUATION; POROUS-MEDIA AB In this paper, we present parallel solvers for large linear systems arising from the finite-element discretization of three-dimensional groundwater flow problems. We have tested our parallel implementations on the Intel Paragon XP/S 150 supercomputer using up to 1024 parallel processors. Our solvers are based on multigrid and Krylov subspace methods. Our goal is to combine powerful algorithms and current generation high performance computers to enhance the capabilities of computer models for groundwater modeling. We show that multigrid can be a scalable algorithm on distributed memory machines. We demonstrate the effectiveness of parallel multigrid based solvers by solving problems requiring more than 64 million nodes in less than a minute. Our results show that multigrid as a stand alone solver works best for problems with smooth coefficients, but for rough coefficients it is best used as a preconditioner for a Krylov subspace method. C1 Univ Illinois, Dept Comp Sci, Urbana, IL 61801 USA. Oak Ridge Natl Lab, Ctr Computat Sci, Oak Ridge, TN 37831 USA. RP Saied, F (reprint author), Univ Illinois, Dept Comp Sci, 1304 W Springfield Ave, Urbana, IL 61801 USA. NR 16 TC 16 Z9 16 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 45 EP 54 DI 10.1016/S0898-1221(98)00031-5 PG 10 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000005 ER PT J AU Ding, HQ Ferraro, RD AF Ding, HQ Ferraro, RD TI An 18 GFLOPS parallel climate data assimilation PSAS package SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE climate modeling; PSAS software package; performance; Intel Paragon; Cray C90 AB We have designed and implemented a set of highly efficient and highly scalable algorithms for an unstructured computational package, the PSAS data simulation package, as demonstrated by detailed performance analysis of systematic runs up to 512 nodes of an Intel Paragon. The preconditioned Conjugate Gradient solver achieves a sustained 18 Gflops performance. Consequently, we achieve an unprecedented 100-fold reduction in time to solution on the Intel Paragon over a single head of a Gray C90. This not only exceeds the daily performance requirement of the Data Assimilation Office at NASA's Goddard Space Flight Center, but also makes it possible to explore much larger and challenging data assimilation problems which are unthinkable on a traditional computer platform such as the Gray C90. C1 CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. RP Ding, HQ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, NERSC, 50A-3111,1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 55 EP 63 DI 10.1016/S0898-1221(98)00032-7 PG 9 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000006 ER PT J AU Ober, CC Oldfield, RA Womble, DE Van Dyke, J AF Ober, CC Oldfield, RA Womble, DE Van Dyke, J TI Seismic imaging on the Intel Paragon SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE seismic processing; massively parallel computers; oil search ID MIGRATION AB A key to reducing the risks and costs associated with oil and gas exploration is the fast, accurate imaging of complex geologies, such as salt domes in the Gulf of Mexico and overthrust regions in U.S. onshore regions. Prestack depth migration generally yields the most accurate images, and one approach to this is to solve the scalar-wave equation using finite differences. Current industry computational capabilities are insufficient for the application of finite-difference, 3-D, prestack, depth-migration algorithms. A 3-D seismic data can be several terabytes in size, and the multiple runs necessary to refine the velocity model may take many Sears. The oil companies and seismic contractors need to perform complete velocity field refinements in weeks and single iterations overnight. High-performance computers and state-of-the-art algorithms and software are required to meet this need. As part of an ongoing ACTI project funded by the U.S. Department of Energy, we have developed a finite-difference, 3-D prestack, depth-migration code for the Intel Paragon. The goal of this work is to demonstrate that massively parallel computers (thousands of processors) can be used efficiently for seismic imaging, and that sufficient computing power exists (or soon will exist) to make finite-difference, prestack, depth migration practical for oil and gas exploration. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Ober, CC (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 7 TC 0 Z9 0 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 65 EP 72 DI 10.1016/S0898-1221(98)00033-9 PG 8 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000007 ER PT J AU Cochran, HD Cummings, PT Cui, ST Gupta, SA Bhupathiraju, RK LoCascio, PF AF Cochran, HD Cummings, PT Cui, ST Gupta, SA Bhupathiraju, RK LoCascio, PF TI Classical molecular simulations of complex, industrially-important systems on the Intel Paragon SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE molecular dynamics; distributed memory supercomputer; domain decomposition; replicated data ID MONTE-CARLO SIMULATIONS; DYNAMICS SIMULATION; CHAIN MOLECULES; ALGORITHM; DECANE; ION; EQUILIBRIA; PREDICTION; SOLVATION; COMPUTER AB Advances in parallel supercomputing now make possible molecular-based engineering and science calculations that will soon revolutionize many technologies, such as those involving polymers and those involving aqueous electrolytes. We have developed a suite of message-passing codes for classical molecular simulation of such complex systems and have completed a number of demonstration calculations of problems of scientific and technological importance. We outline the techniques for classical molecular simulation of these industrially-important systems on the Intel Paragon and summarize some of the results. Nonequilibrium, multiple time step molecular dynamics lets us investigate the rheology of molecular fluids. Chain molecule Monte Carlo simulations in the Gibbs ensemble permit calculation of phase equilibrium of long-chain molecular systems. Complementary equilibrium molecular dynamics yields fundamental insight into the technologically-important problem of liquid-liquid phase separation in polymer blends. Parallel codes for quaternion dynamics using techniques for handling long-range Coulombic forces allow study of ion pairing in supercritical aqueous electrolyte solutions. C1 Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Chem Engn, Knoxville, TN 37996 USA. RP Cochran, HD (reprint author), Oak Ridge Natl Lab, Div Chem Technol, Oak Ridge, TN 37831 USA. RI Cummings, Peter/B-8762-2013 OI Cummings, Peter/0000-0002-9766-2216 NR 30 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 73 EP 84 DI 10.1016/S0898-1221(98)00034-0 PG 12 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000008 ER PT J AU Wang, Y Stocks, GM Nicholson, DMC Shelton, WA AF Wang, Y Stocks, GM Nicholson, DMC Shelton, WA TI The first principles O[N] LSMS method and its applications to magnetic structure of alloys SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE first principles method; magnetic moments; alloys; parallel computing ID ELECTRONIC-STRUCTURE CALCULATIONS; BINDING MOLECULAR-DYNAMICS; FE-NI INVAR; SYSTEM-SIZE; SCALING ALGORITHM; ANTIFERROMAGNETISM; FERROMAGNETISM; ENERGY AB We present an overview of the locally self-consistent multiple scattering (LSMS) method. The method is based on real space multiple scattering theory, is naturally highly parallel, and has been implemented on Intel Paragon parallel platforms within the Center for Computational Sciences at Oak Ridge National Laboratory. O[N]-scaling is demonstrated for unit cells as large as 1000 atoms. The LSMS method can be extended to treat noncollinear magnetic states of materials. We applied the method to calculating the ground state magnetic structure of Fe0.65Ni0.35 alloys. The result indicates the possible existence of noncollinear arrangements of magnetic moments in these alloys. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Wang, Y (reprint author), Pittsburgh Supercomp Ctr, Parallel Applicat Grp, 4400 5th Ave, Pittsburgh, PA 15213 USA. EM wangy@mst.ms.ornl.gov RI Stocks, George Malcollm/Q-1251-2016 OI Stocks, George Malcollm/0000-0002-9013-260X NR 32 TC 3 Z9 3 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 EI 1873-7668 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 85 EP 92 DI 10.1016/S0898-1221(98)00035-2 PG 8 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000009 ER PT J AU Tuzun, RE Noid, DW Sumpter, BG AF Tuzun, RE Noid, DW Sumpter, BG TI Computer simulation of complex strongly coupled nanometer-scale systems: Breaking the billion atom barrier SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE molecular dynamics; symplectic integration; geometric statement function method ID MOLECULAR-DYNAMICS SIMULATIONS AB The capabilities of polymer science and computational chemistry are reaching a point of convergence. New computer hardware and novel computational methods have created opportunities to investigate new polymeric materials, as well as to model and predict their properties. The recent arrival of massively parallel computers and new algorithms for sharing computational tasks among many processors now bring simulation sizes on the order of 10(9) atoms to within reasonable time limits and will allow for new studies in emerging fields such as molecular nanotechnology. C1 Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RP Tuzun, RE (reprint author), Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 13 TC 1 Z9 2 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 93 EP 100 DI 10.1016/S0898-1221(98)00036-4 PG 8 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000010 ER PT J AU Yasar, O AF Yasar, O TI A scalable model for complex flows SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE combustion; particle dynamics; turbulence; radiative transfer; magnetohydrodynamics; spark ignition; massively parallel computing ID GRID RADIATION-MAGNETOHYDRODYNAMICS AB We describe a scalable parallel algorithm for numerical simulations of turbulent, radiative, magnetized, and reactive fluid + particle systems on message-passing distributed-memory computers. Accurate simulation of such complex flows has applications in engine combustion, industrial pulverized coal burners, astrophysics, inertial confinement fusion, nuclear systems, and many other strategically and economically important areas. Our algorithm has been developed based on a widely-used combustion code KIVA-3, a plasma and radiation hydrodynamics code R-MHD, a classical particle dynamics code CMDT, and a discrete ordinates particle transport code TORT. The development is being done on the Intel Paragon with PVM and MPI extensions. We report high levels of parallel efficiency and scalability (up to 1024 nodes) for a baseline engine test case, using our current message-passing reactive and turbulent flow code. The three-dimensional extension of radiation magnetohydrodynamics component is still being worked at and we hope to report further progress in the future. C1 Oak Ridge Natl Lab, Ctr Computat Sci, Oak Ridge, TN 37831 USA. RP Yasar, O (reprint author), Oak Ridge Natl Lab, Ctr Computat Sci, POB 2008,MS-6203, Oak Ridge, TN 37831 USA. OI Yasar, Osman/0000-0002-9474-8137 NR 24 TC 4 Z9 4 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD APR PY 1998 VL 35 IS 7 BP 117 EP 128 DI 10.1016/S0898-1221(98)00039-X PG 12 WC Mathematics, Applied SC Mathematics GA ZC984 UT WOS:000072639000013 ER PT J AU Putirka, K AF Putirka, K TI Garnet plus liquid equilibrium SO CONTRIBUTIONS TO MINERALOGY AND PETROLOGY LA English DT Article ID MODEL CHONDRITIC MANTLE; ABITIBI GREENSTONE-BELT; EARLY DIFFERENTIATION; CRYSTAL-CHEMISTRY; SILICATE GARNETS; PHASE-RELATIONS; FRACTURE-ZONE; 20 GPA; CONSTRAINTS; KOMATIITES AB New experiments were performed to determine saturation conditions for garnet and silicate liquid. Starting compositions were natural basalt powders ranging from komatiite to nephelinite, which were partially melted at pressures between 25 and 100 kbar. Rounded grains of natural pyrope or grossular were added to some experiments to induce garnet saturation, and to aid the segregation of liquid pools for microprobe analysis. Simple expressions describing K-eq as a function of P, T and liquid composition were calibrated by linear least squares analysis of the data from this, and other, studies. Since garnets do not often occur as phenocrysts, equations were designed to predict garnet compositions when P, T and a silicate liquid composition are given. The regression data have a pressure range of 20-270 kbar, and compositions as diverse as nephelinite and komatiite. These models should thus apply to a broad range of geological problems. The majorite component in garnet was found to increase with increasing P, but compositional effects are also important. A garnet saturation surface applied to liquids with chondritic compositions shows that such liquids crystallize garnet with Mj contents of 0.27-0.42 at 200 kbar. Models of Earth differentiation thus need to account not only for fractionation of majorite, but also for Fe-, Ca-, Na- and Ti-bearing garnet components, which occur in non-trivial quantities at high pressure. Since many models of igneous petrogenesis rely on mineral-melt partition coefficients for the minor elements Na, Ti, and Cr, partition coefficients for these elements were also examined. The K-d(gar/liq) for Na was found to be P-sensitive; Na contents of basalts may thus potentially yield information regarding depths of partial melting. C1 Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA. RP Putirka, K (reprint author), Univ Calif Lawrence Livermore Natl Lab, L-202,700 E Ave, Livermore, CA 94550 USA. EM putirka@llnl.gov NR 64 TC 13 Z9 15 U1 0 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0010-7999 J9 CONTRIB MINERAL PETR JI Contrib. Mineral. Petrol. PD APR PY 1998 VL 131 IS 2-3 BP 273 EP 288 DI 10.1007/s004100050393 PG 16 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA ZP954 UT WOS:000073805400012 ER PT J AU Brinker, CJ AF Brinker, CJ TI Oriented inorganic films SO CURRENT OPINION IN COLLOID & INTERFACE SCIENCE LA English DT Review ID MOLECULAR-SIEVE CRYSTALS; LINBO3 THIN-FILMS; ORGANIC INTERFACES; LANGMUIR MONOLAYERS; STEPWISE FORMATION; CALCIUM-CARBONATE; MESOPOROUS SILICA; NUCLEATION; GROWTH; CRYSTALLIZATION AB Since 1996 there have been over 500 literature citations for oriented inorganic films, although a majority of these papers are concerned with vapor phase processing routes such as chemical vapor deposition. Within the context of colloid and interface science there has been continued, incremental progress in so-called 'sol-gel' or 'solution chemical' processing of epitaxial ferroelectric and piezoelectric films for a variety of electronic and optical applications. A promising new approach that obviates the requirement of a single crystal substrate involves heterogenous nucleation and growth on preorganized organic and organically-modified surfaces. Such biomimetic schemes have also been used to form highly oriented porous films for use in separations, sensors, and catalysis. New hydrothermal routes have been devised to prepare oriented zeolite films as well as ferroelectric films. It is anticipated that the combination of self-assembly processes with innovative patterning strategies should lead to future advances in this field. C1 Univ New Mexico, Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA. RP Brinker, CJ (reprint author), Univ New Mexico, Sandia Natl Labs, Adv Mat Lab, 1001 Univ Blvd SE, Albuquerque, NM 87106 USA. EM cjbrink@sandia.gov NR 62 TC 32 Z9 32 U1 1 U2 30 PU CURRENT CHEMISTRY LTD PI LONDON PA 34-42 CLEVELAND STREET, LONDON W1P 6LE, ENGLAND SN 1359-0294 J9 CURR OPIN COLLOID IN JI Curr. Opin. Colloid Interface Sci. PD APR PY 1998 VL 3 IS 2 BP 166 EP 173 PG 8 WC Chemistry, Physical SC Chemistry GA ZM932 UT WOS:000073590800009 ER PT J AU Schultz, PG Xiang, XD AF Schultz, PG Xiang, XD TI Combinatorial approaches to materials science SO CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE LA English DT Review ID LIGANDS; LIBRARY; GENERATION; CHEMISTRY; DIVERSITY AB Combinatorial methods, by which large collections or libraries of compounds are synthesized and screened for a particular physical or chemical property, are being applied to inorganic and organic materials including superconductors, phosphors, ferroelectric materials, polymers and catalysts. This technology promises to significantly increase both the efficiency of the materials discovery and optimization process, as well as our information base relating to materials properties. C1 Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Schultz, PG (reprint author), Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA. RI Xiang, Xiaodong/A-9445-2012; Xiang, Xiaodong/A-5936-2017 NR 30 TC 55 Z9 56 U1 1 U2 14 PU CURRENT CHEMISTRY LTD PI LONDON PA 34-42 CLEVELAND STREET, LONDON W1P 6LE, ENGLAND SN 1359-0286 J9 CURR OPIN SOLID ST M JI Curr. Opin. Solid State Mat. Sci. PD APR PY 1998 VL 3 IS 2 BP 153 EP 158 DI 10.1016/S1359-0286(98)80081-8 PG 6 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA ZM945 UT WOS:000073592100007 ER PT J AU Bishop, AR Awschalom, DD AF Bishop, AR Awschalom, DD TI Optical and magnetic materials unraveling complexity - Overview SO CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE LA English DT Editorial Material C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. RP Bishop, AR (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CURRENT CHEMISTRY LTD PI LONDON PA 34-42 CLEVELAND STREET, LONDON W1P 6LE, ENGLAND SN 1359-0286 J9 CURR OPIN SOLID ST M JI Curr. Opin. Solid State Mat. Sci. PD APR PY 1998 VL 3 IS 2 BP 169 EP 170 DI 10.1016/S1359-0286(98)80083-1 PG 2 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA ZM945 UT WOS:000073592100009 ER PT J AU McBranch, DW AF McBranch, DW TI Supramolecular photoinduced charge transfer materials for nonlinear optics SO CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE LA English DT Review ID SELF-ASSEMBLED MULTILAYERS; POLYMER; FILMS; ABSORPTION; PORPHYRINS; POLYIMIDES; MOLECULES; VINYLENE); STABILITY; SURFACES AB There have been recent advances in the understanding of photoinduced charge and energy transfer in supramolecular materials, and in the design of improved nonlinear optical materials which use these effects. Examples of these materials are linear chains, molecular superstructures, and bulk blends of pi-conjugated compounds which combine the functions of electron donors, accepters, and optimized nonlinear optical chromophores. There has been substantial progress toward the ambitious goal of making bulk heterostructured materials with control of structure, charge transfer efficiency, and nonlinear optical response on the molecular scale. C1 Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA. RP McBranch, DW (reprint author), Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Mail Stop J567, Los Alamos, NM 87545 USA. NR 54 TC 5 Z9 5 U1 3 U2 5 PU CURRENT CHEMISTRY LTD PI LONDON PA 34-42 CLEVELAND STREET, LONDON W1P 6LE, ENGLAND SN 1359-0286 J9 CURR OPIN SOLID ST M JI Curr. Opin. Solid State Mat. Sci. PD APR PY 1998 VL 3 IS 2 BP 203 EP 208 DI 10.1016/S1359-0286(98)80090-9 PG 6 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA ZM945 UT WOS:000073592100016 ER PT J AU Ray, FA Waltman, MJ Lehman, JM Little, JB Nickoloff, JA Kraemer, PM AF Ray, FA Waltman, MJ Lehman, JM Little, JB Nickoloff, JA Kraemer, PM TI Identification of SV40 T-antigen mutants that alter T-antigen-induced chromosome damage in human fibroblasts SO CYTOMETRY LA English DT Article DE chromosome instability; chromosome aberrations; SV40 T antigen; human diploid fibroblasts; cell cycle; p53; flow cytometry; mapping; site-directed mutagenesis ID HUMAN-DIPLOID FIBROBLASTS; ZINC FINGER REGION; SIMIAN VIRUS-40; NEOPLASTIC TRANSFORMATION; TRANSGENIC MICE; HUMAN-CELLS; EPITHELIAL-CELLS; DNA-REPLICATION; MULTIPLE SITES; SYNDROME GENE AB The SV40 T antigen causes numerical (aneuploidy) and structural (aberrations) chromosome damage when expressed in human diploid fibroblasts. This chromosome damage precedes the acquisition of neoplastic traits such as anchorage independence, colony formation in reduced serum growth factors, immortalization, or tumorigenicity. Therefore, chromosome damage may be important in acquiring these traits because it could provide a mutational mechanism, To determine hom the T antigen causes chromosome damage, point mutations were constructed that altered previously defined biochemical functions of the T protein, Mutant T antigen constructs were introduced into human diploid fibroblasts and selected by using G418. Clones of G418(r) cells that expressed mutant T antigens were expanded and scored for chromosome damage, Most of these mutant T antigens caused by levels of chromosome damage similar to those caused the wild-type T antigen. However, some T-antigen mutants induced fewer chromosome changes, A subset of these clones that induced less chromosome damage than wild-type T were examined further. Mutant T-antigen protein levels from this subset were quantified with flow cytometry and compared with wildtype protein expression levels, Mutations of T antigen shown previously to form less stable complexes with p53 caused less chromosome damage, A mutation in the zinc finger domain of T antigen also caused less chromosome damage, Interestingly, a mutant that caused loss of the ATPase activity of T antigen caused an increase in endoreduplicated cells, Also, a correlation was noted between cells expressing very low levels of T antigen (below detection limits when using nom cytometry) and an undamaged karyotype. This correlation indicates that there is a threshold level of T-antigen expression that induces chromosome damage and that expression levels on a per-cell basis rather than on a population basis should be considered in subsequent studies. (C) Wiley-Liss, Inc. C1 Albany Med Coll, Dept Microbiol Immunol & Mol Genet, Albany, NY 12208 USA. Los Alamos Natl Lab, Div Life Sci, Los Alamos, NM USA. Harvard Univ, Sch Publ Hlth, Dept Canc Biol, Boston, MA 02115 USA. RP Ray, FA (reprint author), Albany Med Coll, Dept Microbiol Immunol & Mol Genet, A-68,47 New Scotland Ave, Albany, NY 12208 USA. EM andrew_ray@ccgateway.amc.edu FU NCI NIH HHS [CA54079, CA41608] NR 55 TC 9 Z9 9 U1 0 U2 1 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 0196-4763 J9 CYTOMETRY JI Cytometry PD APR 1 PY 1998 VL 31 IS 4 BP 242 EP 250 PG 9 WC Biochemical Research Methods; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA ZF711 UT WOS:000072924400003 PM 9551599 ER PT J AU Lockett, SJ Sudar, D Thompson, CT Pinkel, D Gray, JW AF Lockett, SJ Sudar, D Thompson, CT Pinkel, D Gray, JW TI Efficient, interactive, and three-dimensional segmentation of cell nuclei in thick tissue sections SO CYTOMETRY LA English DT Article DE interactive segmentation; confocal microscopy; tissue analysis ID DNA IMAGE CYTOMETRY; DIGITAL IMAGES; MICROSCOPY; HYBRIDIZATION; EXTRACTION AB Segmentation of intact cell nuclei in three-dimensional (3D) images of thick tissue sections is an important basic capability necessary for many biological research studies, Because automatic algorithms do not correctly segment all nuclei in tissue sections, interactive algorithms may be preferable for some applications. Existing interactive segmentation algorithms require the analyst to draw a border around the nucleus under consideration in all successive two-dimensional (2D) planes of the 3D image, The present paper describes an algorithm with two main advantages over the existing method, First, the analyst draws borders only in 2D planes that cut approximately through the center of the nucleus under consideration so that the nuclear borders generally are most distinct, Second, the analyst draws only five borders around each nucleus, and then the algorithm interpolates the entire surface. The algorithm results in segmented objects that correspond to individual, visually identifiable nuclei, The segmented surfaces, however, may not exactly represent the true nuclear surface, An optional, automatic surface optimization algorithm can be applied to reduce this error. (C) 1998 Wiley-Liss, Inc. C1 Univ Calif Berkeley, Ernesto Orlando Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. Univ New Mexico, Dept Pathol, Albuquerque, NM 87131 USA. RP Lockett, SJ (reprint author), Univ Calif Berkeley, Ernesto Orlando Lawrence Berkeley Natl Lab, Div Life Sci, 1 Cyclotron Rd,MS 74-157, Berkeley, CA 94720 USA. EM sjlockett@lbl.gov OI Sudar, Damir/0000-0002-2510-7272 FU NCI NIH HHS [CA-67412] NR 40 TC 42 Z9 42 U1 0 U2 2 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0196-4763 J9 CYTOMETRY JI Cytometry PD APR 1 PY 1998 VL 31 IS 4 BP 275 EP 286 DI 10.1002/(SICI)1097-0320(19980401)31:4<275::AID-CYTO7>3.0.CO;2-I PG 12 WC Biochemical Research Methods; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA ZF711 UT WOS:000072924400007 PM 9551603 ER PT J AU Costanza, R d'Arge, R de Groot, R Farber, S Grasso, M Hannon, B Limburg, K Naeem, S O'Neill, RV Paruelo, J Raskin, RG Sutton, P van den Belt, M AF Costanza, R d'Arge, R de Groot, R Farber, S Grasso, M Hannon, B Limburg, K Naeem, S O'Neill, RV Paruelo, J Raskin, RG Sutton, P van den Belt, M TI The value of the world's ecosystem services and natural capital (Reprinted from Nature, vol 387, pg 253, 1997) SO ECOLOGICAL ECONOMICS LA English DT Reprint DE ecological systems; capital stocks; ecosystem services ID ENVIRONMENTAL FUNCTIONS; VALUATION; MANAGEMENT; ECONOMICS; FISHERIES AB The services of ecological systems and the natural capital stocks that produce them are critical to the functioning of the Earth's life-support system. They contribute to human welfare, both directly and indirectly, and therefore represent part of the total economic value of the planet. We have estimated the current economic value of 17 ecosystem services for 16 biomes, based on published studies and a few original calculations. For the entire biosphere, the value (most of which is outside the market) is estimated to be in the range of US$16-54 trillion (10(12)) per year, with an average of US$33 trillion per year. Because of the nature of the uncertainties, this must be considered a minimum estimate. Global gross national product total is around US$18 trillion per year. (C) 1998 Elsevier Science B.V. All rights reserved. C1 Univ Maryland, Ctr Environm Sci, Dept Zool, Solomons, MD 20688 USA. Univ Maryland, Inst Ecol Econ, Solomons, MD 20688 USA. Univ Wyoming, Dept Econ, Laramie, WY 82070 USA. Agr Univ Wageningen, Ctr Environm & Climate Studies, NL-6700 HB Wageningen, Netherlands. Univ Pittsburgh, Grad Sch Publ & Int Affairs, Pittsburgh, PA 15260 USA. Univ Illinois, Dept Geog, Urbana, IL 61801 USA. Univ Illinois, NCSA, Urbana, IL 61801 USA. Inst Ecosyst Studies, Millbrook, NY USA. Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Univ Buenos Aires, Fac Agron, Dept Ecol, RA-1417 Buenos Aires, DF, Argentina. CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. Univ Calif Santa Barbara, Dept Geog, Natl Ctr Geog Informat & Anal, Santa Barbara, CA 93106 USA. Ecol Econ Res & Applicat Inc, Solomons, MD 20688 USA. RP Costanza, R (reprint author), Univ Maryland, Ctr Environm Sci, Dept Zool, Box 38, Solomons, MD 20688 USA. RI Costanza, Robert/A-4912-2008; Sutton, Paul/A-6764-2013; Limburg, Karin/M-8380-2013; Ross, Donald/F-7607-2012 OI Costanza, Robert/0000-0001-6348-8734; Sutton, Paul/0000-0001-6972-3256; Ross, Donald/0000-0002-8659-3833 NR 34 TC 133 Z9 193 U1 121 U2 971 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8009 J9 ECOL ECON JI Ecol. Econ. PD APR PY 1998 VL 25 IS 1 BP 3 EP 15 DI 10.1016/S0921-8009(98)00020-2 PG 13 WC Ecology; Economics; Environmental Sciences; Environmental Studies SC Environmental Sciences & Ecology; Business & Economics GA ZQ724 UT WOS:000073896700002 ER PT J AU Costanza, R d'Arge, R de Groot, R Farber, S Grasso, M Hannon, B Limburg, K Naeem, S O'Neill, RV Paruelo, J Raskin, RG Sutton, P van den Belt, M AF Costanza, R d'Arge, R de Groot, R Farber, S Grasso, M Hannon, B Limburg, K Naeem, S O'Neill, RV Paruelo, J Raskin, RG Sutton, P van den Belt, M TI The value of ecosystem services: putting the issues in perspective SO ECOLOGICAL ECONOMICS LA English DT Article DE ecosystem services; global valuation; GNP C1 Univ Maryland, Dept Zool, Ctr Environm Sci, Solomons, MD 20688 USA. Univ Maryland, Inst Ecol Econ, Solomons, MD 20688 USA. Univ Wyoming, Dept Econ, Laramie, WY 82070 USA. Agr Univ Wageningen, Ctr Environm & Climate Studies, NL-6700 HB Wageningen, Netherlands. Univ Pittsburgh, Grad Sch Publ & Int Affairs, Pittsburgh, PA 15260 USA. Univ Illinois, Dept Geog, Urbana, IL 61801 USA. Univ Illinois, NCSA, Urbana, IL 61801 USA. Inst Ecosyst Studies, Millbrook, NY 12545 USA. Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Univ Buenos Aires, Fac Agron, Dept Ecol, RA-1417 Buenos Aires, DF, Argentina. CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA. Univ Calif Santa Barbara, Dept Geog, Natl Ctr Geog Informat & Anal, Santa Barbara, CA 93106 USA. Ecol Econ Res & Applicat, Solomons, MD 20688 USA. RP Costanza, R (reprint author), Univ Maryland, Dept Zool, Ctr Environm Sci, Box 38, Solomons, MD 20688 USA. RI Costanza, Robert/A-4912-2008; Sutton, Paul/A-6764-2013; Limburg, Karin/M-8380-2013 OI Costanza, Robert/0000-0001-6348-8734; Sutton, Paul/0000-0001-6972-3256; NR 17 TC 86 Z9 100 U1 4 U2 81 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-8009 J9 ECOL ECON JI Ecol. Econ. PD APR PY 1998 VL 25 IS 1 BP 67 EP 72 DI 10.1016/S0921-8009(98)00019-6 PG 6 WC Ecology; Economics; Environmental Sciences; Environmental Studies SC Environmental Sciences & Ecology; Business & Economics GA ZQ724 UT WOS:000073896700015 ER PT J AU Snodgrass, JW Meffe, GK AF Snodgrass, JW Meffe, GK TI Influence of beavers on stream fish assemblages: Effects of pond age and watershed position SO ECOLOGY LA English DT Article DE anoxic conditions; beaver ponds; Castor canadensis; fish assemblages; fish predation; landscape position; patch dynamics; pond age; species richness ID CASTOR-CANADENSIS; COASTAL-PLAIN; COMMUNITY; PATTERNS; PUMPKINSEED; VARIABILITY; WETLANDS AB We used a spatial survey of fish assemblage structure in streams and beaver ponds to: (1) determine the effects of beavers on fish assemblage structure at the reach and drainage basin scales, and (2) assess the influences of pond age, watershed position, and pond environment on fish assemblage structure within beaver ponds. Stream impoundment by beavers affected species richness at the reach scale, but this effect was highly dependent on pond age and drainage area above the pond. In headwater streams, species richness per pond increased to a high in ponds 9-17 yr old and then decreased to a low in ponds >17 yr old. Farther downstream, species richness showed little change with pond age. Assemblage structure varied significantly among unimpounded, impounded, and previously impounded stream reaches, and variation in assemblage structure among ponds was related to pond age and physical habitat. In large ponds there was a shift from lotic to lentic species, and as ponds aged, small-bodied minnows were replaced by larger predators. Because there was high species turnover among impounded and previously impounded reaches, beavers affected patterns of species richness at the drainage basin scale; we collected more species in first-and second-order streams (32 and 38, respectively) than in third-order streams (26). Taken together these results indicate: (1) that beavers have a positive effect on fish species richness in low-order, blackwater streams, but maintenance of this effect requires preservation of both spatial and temporal dynamics of beaver pond creation and abandonment, and (2) the positive relationship between stream fish species richness and drainage area described for many streams may be a recent phenomenon resulting from the extirpation of beavers from much of their historical range. C1 Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Snodgrass, JW (reprint author), Univ Georgia, Savannah River Ecol Lab, Drawer E, Aiken, SC 29802 USA. RI Snodgrass, Joel/C-5288-2016; OI Snodgrass, Joel/0000-0002-4436-8750 NR 51 TC 74 Z9 79 U1 6 U2 34 PU ECOLOGICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE, NW, STE 400, WASHINGTON, DC 20036 USA SN 0012-9658 J9 ECOLOGY JI Ecology PD APR PY 1998 VL 79 IS 3 BP 928 EP 942 DI 10.1890/0012-9658(1998)079[0928:IOBOSF]2.0.CO;2 PG 15 WC Ecology SC Environmental Sciences & Ecology GA ZG985 UT WOS:000073060300015 ER PT J AU Baker, JG AF Baker, JG TI Gender, race and PhD completion in natural science and engineering SO ECONOMICS OF EDUCATION REVIEW LA English DT Article AB This article examines the issue of female and minority progression to the science and engineering Ph.D. The research indicates that once one controls for "ability" (as measured by GRE scores, grade point averages, and National Science Foundation Graduate Fellowship panel evaluations of applicants) large sex and race differences in science and engineering degree completion rates are reduced. Ethnic differences almost vanish, although female completion rates lag slightly behind those of males. However, available evidence indicates this gender gap is narrowing. These findings contradict the notion of high female and minority attrition in science and engineering, and implies that public policy aimed at reducing perceived high attrition is likely to have only marginal success. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Oak Ridge Associated Univ, Oak Ridge, TN 37830 USA. So Utah Univ, Cedar City, UT 84720 USA. RP Baker, JG (reprint author), Oak Ridge Associated Univ, POB 117, Oak Ridge, TN 37830 USA. NR 21 TC 9 Z9 9 U1 3 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0272-7757 J9 ECON EDUC REV JI Econ. Educ. Rev. PD APR PY 1998 VL 17 IS 2 BP 179 EP 188 DI 10.1016/S0272-7757(97)00014-9 PG 10 WC Economics; Education & Educational Research SC Business & Economics; Education & Educational Research GA ZV367 UT WOS:000074297500007 ER PT J AU Everaarts, JM Den Besten, PJ Hillebrand, MTJ Halbrook, RS Shugart, LR AF Everaarts, JM Den Besten, PJ Hillebrand, MTJ Halbrook, RS Shugart, LR TI DNA strand breaks, cytochrome P-450-dependent monooxygenase system activity and levels of chlorinated biphenyl congeners in the pyloric caeca of the seastar (Asterias rubens) from the North Sea SO ECOTOXICOLOGY LA English DT Article DE DNA strand breaks; cytochrome P-450; monooxygenase system; benzo[a]pyrene hydroxylase; BPH activity; PCB; pyloric caeca; Asterias rubens; North Sea ID ALKALINE UNWINDING ASSAY; POLYCHLORINATED-BIPHENYLS; AROMATIC-HYDROCARBONS; MARINE POLLUTION; CECA MICROSOMES; LIMANDA-LIMANDA; PCB COMPONENTS; BENZOPYRENE; DAMAGE; STAR AB Seastars (Asterias rubens L.) were collected at sampling locations in different areas along transects radiating into the southern North Sea, representing areas impacted by contaminants to different degrees. Strand breakage in DNA isolated from tissue of the pyloric caeca was measured by the alkaline unwinding assay, modified to allow for the isolation of highly intact DNA. The interpretation of the results is based on the incidence of DNA strand breaks (expressed as the double : total DNA ratio or F value, indicating the degree of double-strandedness). The cytochrome P-450 concentration and the benzo [a] pyrene (BaP) hydroxylase activity were measured in microsomal fractions of the pyloric caeca. The chlorinated biphenyl (CB) congeners in tissue samples from the digestive gland were determined by temperature-programmed gas-chromatography, with a CPSil8 capillary column as the stationary phase, hydrogen as the carrier gas and Ni-63-electron capture detection. Areas where seastars showed different DNA integrity could be described. The highest integrity (0.75 < F < 0.85) was found in the off-shore reference sites of the Dogger Bank and Southern Bight. The mean F value in seastars from most sampling locations varied between 55 and 75%. The lowest DNA integrity (0.35 < F < 0.55) was found in specimens obtained from sampling locations near the river Rhine delta, along the Dutch coast and at two expected uncontaminated offshore areas. The BaP hydroxylase activity was relatively high near the mouth of the rivers Rhine and Scheldt, but also at a supposedly clean site near Dogger Bank. The concentration of CB congeners in the pyloric caeca of seastars decreased along transects radiating into the southern North Sea from the coastal areas of the Netherlands; the highest concentrations were in the nearby coastal areas and the lowest were in the open sea sampling locations. The data indicate that there might be a relationship between pollution from the Rivers Rhine, Meuse and Scheldt and the incidence of DNA strand breaks and/or BaP hydroxylase activity. C1 Netherlands Inst Sea Res, NL-1790 AB Den Burg, Netherlands. Toxicol Res Inst, NL-3508 TB Utrecht, Netherlands. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Everaarts, JM (reprint author), Netherlands Inst Sea Res, POB 59, NL-1790 AB Den Burg, Netherlands. NR 44 TC 35 Z9 36 U1 0 U2 3 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0963-9292 EI 1573-3017 J9 ECOTOXICOLOGY JI Ecotoxicology PD APR PY 1998 VL 7 IS 2 BP 69 EP 79 DI 10.1023/A:1008811802432 PG 11 WC Ecology; Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA ZC604 UT WOS:000072598100002 ER PT J AU Wallman, PH Thorsness, CB Winter, JD AF Wallman, PH Thorsness, CB Winter, JD TI Hydrogen production from wastes SO ENERGY LA English DT Article AB A process for the conversion of municipal solid waste, automobile shredder residue and other plastic/rubber wastes to hydrogen is described both from a technical and an economic point of view. Pilot-plant and modeling results are tools in the analysis. The conversion is carried out in two major process steps. The first or pre-treatment step is based on pyrolysis and results in an intermediate product containing approximately 90% of the primary feed in a suitable physical form for the second step. This second step is Texaco's high-temperature, high-pressure gasifier which is based on partial oxidation and converts the organic components to synthesis gas (CO and H-2). Total thermal conversion efficiency for waste to hydrogen is found to be a strong function of feedstock quality. For typical MSW feedstocks, an efficiency of 40-50% is predicted for an integrated process. Fossil-fuel feedstocks such as waste plastics and scrap tires result in efficiencies of the order 60-70%. The cost of produced hydrogen is approximately $15/GJ for typical MSW with a tipping fee of $50/ton, but drops to $6/ton for high-plastics waste that carry a tipping fee of $100/ton. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Texaco Inc, Montebello Technol Ctr, S El Monte, CA 91733 USA. RP Wallman, PH (reprint author), Univ Calif Lawrence Livermore Natl Lab, L-369, Livermore, CA 94550 USA. NR 8 TC 30 Z9 32 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0360-5442 J9 ENERGY JI Energy PD APR PY 1998 VL 23 IS 4 BP 271 EP 278 DI 10.1016/S0360-5442(97)00089-3 PG 8 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA ZQ399 UT WOS:000073857300002 ER PT J AU Koomey, JG Martin, NC Brown, M Price, LK Levine, MD AF Koomey, JG Martin, NC Brown, M Price, LK Levine, MD TI Costs of reducing carbon emissions: US building sector scenarios SO ENERGY POLICY LA English DT Article DE carbon emissions; buildings; energy efficiency AB This paper summarizes a detailed assessment of the achievable cost-effective potential for reducing carbon emissions in 2010 in the US residential and commercial buildings sectors. Our analysis shows that substantial reductions in future greenhouse gas emissions can be realized through the use of more energy-efficient technologies that save money and reduce pollution at the same time. These carbon reductions can therefore be achieved at negative net cost to society. Published by Elsevier Science Ltd. C1 Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Environm Energy Technol DIv, Energy Anal Program, Berkeley, CA 94720 USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Koomey, JG (reprint author), Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Environm Energy Technol DIv, Energy Anal Program, Berkeley, CA 94720 USA. NR 12 TC 18 Z9 18 U1 0 U2 4 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0301-4215 J9 ENERG POLICY JI Energy Policy PD APR PY 1998 VL 26 IS 5 BP 433 EP 440 DI 10.1016/S0301-4215(97)00154-7 PG 8 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA ZW012 UT WOS:000074364700007 ER PT J AU Stuckless, JS Marshall, BD Vaniman, DT Dudley, WW Peterman, ZE Whelan, JF Taylor, EM Forester, RM O'Leary, DW AF Stuckless, JS Marshall, BD Vaniman, DT Dudley, WW Peterman, ZE Whelan, JF Taylor, EM Forester, RM O'Leary, DW TI Comments on "Overview of calcite/opal deposits at or near the proposed high-level nuclear waste site, Yucca Mountain, Nevada, USA pedogenic, hypogene, or both" SO ENVIRONMENTAL GEOLOGY LA English DT Article ID SOUTHERN GREAT-BASIN; UNITED-STATES; CARBONATE; MORPHOLOGY; SOILS; WATER; AREA C1 US Geol Survey, Denver Fed Ctr, Denver, CO 80225 USA. Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Stuckless, JS (reprint author), US Geol Survey, Denver Fed Ctr, Box 25046,MS 425, Denver, CO 80225 USA. OI Dublyansky, Yuri/0000-0003-1433-9999 NR 56 TC 10 Z9 10 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 0943-0105 J9 ENVIRON GEOL JI Environ. Geol. PD APR PY 1998 VL 34 IS 1 BP 70 EP 78 PG 9 WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources SC Environmental Sciences & Ecology; Geology; Water Resources GA ZK390 UT WOS:000073315900007 ER PT J AU O'Day, PA Carroll, SA Waychunas, GA AF O'Day, PA Carroll, SA Waychunas, GA TI Rock-water interactions controlling zinc, cadmium, and lead concentrations in surface waters and sediments, US Tri-State Mining District. 1. Molecular identification using X-ray absorption spectroscopy SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID MULTIPLE-SCATTERING CALCULATIONS; CRYSTAL-STRUCTURE REFINEMENTS; FINE-STRUCTURE; EXAFS SPECTROSCOPY; INTERFACES; COMPLEXES; FERRIHYDRITE; SPECIATION; ADSORPTION; CHEMISTRY AB X-ray absorption spectroscopy (XAS) and X-ray absorption fine structure (XAFS) spectra of zinc-, cadmium-, and lead-bearing sediments from a mining-impacted site in the U.S. Tri-State Mining District (Kansas-Missouri-Oklahoma) are used to identify the local molecular coordination of metals in contaminated, untreated stream sediments. Quantitative analysis of the XAFS spectra, supplemented by elemental distributions on particles provided by electron microprobe and secondary ion mass spectrometry (SIMS), shows that zinc and cadmium occur in small (<1 mu m), residual particles of the host ore, sphalerite (ZnS) in which cadmium substitutes for zinc in the mineral structure. In half of the samples studied, analyses indicate that zinc, as it weathers from sphalerite, is scavenged primarily by zinc hydroxide and/or zinc-iron oxyhydroxide phases, depending on the total amount of iron in the system. These phases probably form as amorphous or poorly crystalline coatings on mineral surfaces. There is no evidence that zinc sorption or substitution in other mineral phases is a significant mode of uptake. In contrast, there is no spectral evidence for the association of cadmium with secondary oxide or oxyhydroxide phases in both high- and low-iron samples. Cadmium bound in sphalerite is found in all samples; evidence for cadmium uptake into a carbonate phase (in addition to sphalerite) is found in only one sample. This result may suggest preferential partitioning of cadmium, relative to zinc, into the aqueous phase as sphalerite weathers. XAFS spectra of lead in sediments with low total iron concentrations indicate no evidence for Pb bonding in galena (PbS), the host ore, and suggest lead uptake in secondary carbonate and/or oxide phases. Uptake of metal ions from solution into secondary phases is apparently governed by competition between iron oxyhydroxide and carbonate phases that can be related to total iron in the sediments and to stream pH. This work highlights the differential chemical behavior of three divalent metal cations in a contaminated system and demonstrates the need for direct molecular identification of metal coordination in order to generate accurate geochemical predictions. C1 Arizona State Univ, Dept Geol, Tempe, AZ 85287 USA. Univ Calif Lawrence Livermore Natl Lab, Earth & Environm Sci Directorate, Livermore, CA 94551 USA. Stanford Univ, Ctr Mat Res, Stanford, CA 94305 USA. RP O'Day, PA (reprint author), Arizona State Univ, Dept Geol, Tempe, AZ 85287 USA. EM oday@asu.edu NR 48 TC 96 Z9 99 U1 4 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD APR 1 PY 1998 VL 32 IS 7 BP 943 EP 955 DI 10.1021/es970453c PG 13 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA ZE844 UT WOS:000072837300033 ER PT J AU Carroll, SA O'Day, PA Piechowski, M AF Carroll, SA O'Day, PA Piechowski, M TI Rock-water interactions controlling zinc, cadmium, and lead concentrations in surface waters and sediments, US Tri-State Mining District. 2. Geochemical interpretation SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID HYDROUS FERRIC-OXIDE; ACID-MINE DRAINAGE; PYRITE OXIDATION; THERMODYNAMIC PROPERTIES; PHOTOOXIDATIVE DISSOLUTION; SOLID-SOLUTION; CALCITE; SORPTION; ADSORPTION; SOLUBILITY AB We have studied principle rock-water interactions that control trace metal concentrations in a complex geochemical environment containing multiple contaminants and multiple solid phases by combining kinetic and thermodynamic evaluation of the water chemistry with spectroscopic analyses of the sediments. This approach allows the number of geochemical reactions needed to model and predict trace metal mobility over a range of natural settings to be greatly constrained. In the U.S. Tri-State Mining District (Kansas-Missouri-Oklahoma) the most important geochemical interactions are degassing of CO(2)(g)-rich waters, the shortterm uptake and release kinetics of zinc, cadmium, and lead; competition between iron oxyhydroxides and carbonates for zinc, cadmium, and lead; and catalysis of sulfide dissolution by iron in near-neutral waters. In our field study, degassing of CO(2)(g) waters is responsible for the range of pH measured at each site over the 1-year field study. Trace metal release and uptake kinetics by iron oxyhydroxides and carbonates are driven by changes in pH. Aqueous metal concentrations and pH of pond water and streamwater in contact with high-iron sediments suggest that oxidation-reduction reactions involving iron accelerate sphalerite dissolution kinetics in near-neutral waters. This study clearly shows that zinc is preferentially partitioned into secondary zinc hydroxide or iron oxyhydroxide, but in the same sediments cadmium is not. Cadmium is the most mobile element because it dissolves from sulfide and is taken up by calcite only in waters with pH > 7. Lead is taken up by carbonate or iron oxyhydroxide and is extremely insoluble in these near-neutral waters. To accurately predict trace metal mobility in complex environments, laboratory studies are needed to quantify competition effects among multiple metals for carbonate and iron oxyhydroxide phases and to quantify reaction rates of metal release and uptake from sulfides and secondary phases in the presence of dissolved iron. C1 Lawrence Livermore Natl Lab, Earth & Environm Sci Directorate, Livermore, CA 94550 USA. Arizona State Univ, Dept Geol, Tempe, AZ 85287 USA. Univ Missouri, Dept Geol Sci, Columbia, MO 65211 USA. RP Carroll, SA (reprint author), Lawrence Livermore Natl Lab, Earth & Environm Sci Directorate, Livermore, CA 94550 USA. EM carroll6@llnl.gov NR 50 TC 63 Z9 67 U1 1 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD APR 1 PY 1998 VL 32 IS 7 BP 956 EP 965 DI 10.1021/es970452k PG 10 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA ZE844 UT WOS:000072837300034 ER PT J AU Stevens, MJ Plimpton, SJ AF Stevens, MJ Plimpton, SJ TI The effect of added salt on polyelectrolyte structure SO EUROPEAN PHYSICAL JOURNAL B LA English DT Article ID FREE LINEAR POLYELECTROLYTES; MOLECULAR-DYNAMICS; PERSISTENCE LENGTH; CHAIN AB We present results of molecular dynamics simulations of strong, flexible polyelectrolyte chains in solution with added salt. The effect of added salt on the polyelectrolyte chain structure is fully treated for the first time as a function of polymer density. Systems above and below the Manning condensation limit are studied. The chain structure is intimately tied to the ion density near the chain even for chains in the counterion condensation (CC) regime. The end-to-end distance is demonstrated to be a function of the inverse Debye screening length and the Bjerrum length. The ion density near the polymer chain depends on the amount of added salt, and above the condensation limit the chains significantly contract due to added salt. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Stevens, MJ (reprint author), Sandia Natl Labs, POB 5800,MS 1111, Albuquerque, NM 87185 USA. NR 23 TC 55 Z9 56 U1 0 U2 10 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 USA SN 1434-6028 J9 EUR PHYS J B JI Eur. Phys. J. B PD APR PY 1998 VL 2 IS 3 BP 341 EP 345 DI 10.1007/s100510050257 PG 5 WC Physics, Condensed Matter SC Physics GA ZV579 UT WOS:000074319200007 ER PT J AU Breitweg, J Derrick, M Krakauer, D Magill, S Mikunas, D Musgrave, B Repond, J Stanek, R Talaga, RL Yoshida, R Zhang, H Mattingly, MCK Anselmo, F Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Castellini, G Chiarini, M Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Gialas, I Giusti, P Iacobucci, G Laurenti, G Levi, G Margotti, A Massam, T Nania, R Nemoz, C Palmonari, F Pesci, A Polini, A Ricci, F Sartorelli, G Garcia, YZ Zichichi, A Amelung, C Bornheim, A Brock, I Coboken, K Crittenden, J Deffner, R Eckert, M Grothe, M Hartmann, H Heinloth, K Heinz, L Hilger, E Jakob, HP Katz, UF Kerger, R Paul, E Pfeiffer, M Rembser, C Stamm, J Wedemeyer, R Wieber, H Bailey, DS Campbell-Robson, S Cottingham, WN Foster, B Hall-Wilton, R Hayes, ME Heath, GP Heath, HF McFall, JD Piccioni, D Roff, DC Tapper, RJ Arneodo, M Ayad, R Capua, M Garfagnini, A Iannotti, L Schioppa, M Susinno, G Kim, JY Lee, JH Lim, IT Pac, MY Caldwell, A Cartiglia, N Jing, Z Liu, W Mellado, B Parsons, JA Ritz, S Sampson, S Sciulli, F Straub, PB Zhu, Q Borzemski, P Chwastowski, J Eskreys, A Figiel, J Klimek, K Przybycien, MB Zawiejski, L Adamczyk, L Bednarek, B Bukowy, M Czermak, A Jelen, K Kisielewska, D Kowalski, T Przybycien, M Rulikowska-Zarebska, E Suszycki, L Zajac, J Dulinski, Z Kotanski, A Abbiendi, G Bauerdick, LAT Behrens, U Beier, H Bienlein, JK Cases, G Deppe, O Desler, K Drews, G Fricke, U Gilkinson, DJ Glasman, C Gottlicher, P Haas, T Hain, W Hasell, D Johnson, KF Kasemann, M Koch, W Kotz, U Kowalski, H Labs, J Lindemann, L Lohr, B Lowe, M Manczak, O Milewski, J Monteiro, T Ng, JST Notz, D Ohrenberg, K Park, IH Pellegrino, A Pelucchi, F Piotrzkowski, K Roco, M Rohde, M Roldan, J Ryan, JJ Savin, AA Schneekloth, U Schwarzer, O Selonke, F Surrow, B Tassi, E Voss, T Westphal, D Wolf, G Wollmer, U Youngman, C Zarnecki, AF Zeuner, W Burow, BD Grabosch, HJ Meyer, A Schlenstedt, S Barbagli, G Gallo, E Pelfer, P Anzivino, G Maccarrone, G Votano, L Bamberger, A Eisenhardt, S Markun, P Trefzger, T Wolfle, S Bromley, JT Brook, NH Bussey, PJ Doyle, AT Macdonald, N Saxon, DH Sinclair, LE Strickland, E Waugh, R Bohnet, I Gendner, N Holm, U Meyer-Larsen, A Salehi, H Wick, K Gladilin, LK Horstmann, D Kcira, D Klanner, R Lohrmann, E Poelz, G Schott, W Zetsche, F Bacon, TC Butterworth, I Cole, JE Howell, C Hung, BHY Lamberti, L Long, KR Miller, DB Pavel, N Prinias, A Sedgbeer, JK Sideris, D Walker, R Mallik, U Wang, SM Wu, JT Cloth, P Filges, D Fleck, JI Ishii, T Kuze, M Suzuki, I Tokushuku, K Yamada, S Yamauchi, K Yamazaki, Y Hong, SJ Lee, SB Nam, SW Park, SK Barreiro, F Fernandez, JP Garcia, G Graciani, R Hernandez, JM Hervas, L Labarga, L Martinez, M del Peso, J Puga, J Terron, J de Troconiz, JF Corriveau, F Hanna, DS Hartmann, J Hung, LW Murray, WN Ochs, A Riveline, M Stairs, DG St-Laurent, M Ullmann, R Tsurugai, T Bashkirov, V Dolgoshein, BA Stifutkin, A Bashindzhagyan, GL Ermolov, PF Golubkov, YA Khein, LA Korotkova, NA Korzhavina, IA Kuzmin, VA Lukina, OY Proskuryakov, AS Shcheglova, LM Solomin, AN Zotkin, SA Bokel, C Botje, M Brummer, N Chlebana, F Engelen, J Koffeman, E Kooijman, P van Sighem, A Tiecke, H Tuning, N Verkerke, W Vossebeld, J Vreeswijk, M Wiggers, L de Wolf, E Acosta, D Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Nylander, P Romanowski, TA Blaikley, HE Cashmore, RJ Cooper-Sarkar, AM Devenish, RCE Edmonds, JK Grosse-Knetter, J Harnew, N Nath, C Noyes, VA Quadt, A Ruske, O Tickner, JR Uijterwaal, H Walczak, R Waters, DS Bertolin, A Brugnera, R Carlin, R Dal Corso, F Dosselli, U Limentani, S Morandin, M Posocco, M Stanco, L Stroili, R Voci, C Bulmahn, J Oh, BY Okrasinski, JR Toothacker, WS Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Raso, M Hart, JC McCubbin, NA Shah, TP Barberis, E Epperson, D Heusch, C Rahn, JT Sadrozinski, HFW Seiden, A Wichmann, R Williams, DC Abramowicz, H Briskin, G Dagan, S Kananov, S Levy, A Abe, T Fusayasu, T Inuzuka, M Nagano, K Umemori, K Yamashita, T Hamatsu, R Hirose, T Homma, K Kitamura, S Matsushita, T Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Petrucci, MC Ruspa, M Sacchi, R Solano, A Staiano, A Dardo, M Bailey, DC Fagerstroem, CP Galea, R Hartner, GF Joo, KK Levman, GM Martin, JF Orr, RS Polenz, S Sabetfakhri, A Simmons, D Teuscher, RJ Butterworth, JM Catterall, CD Jones, TW Lane, JB Saunders, RL Sutton, MR Wing, M Ciborowski, J Grzelak, G Kasprzak, M Muchorowski, K Nowak, RJ Pawlak, JM Pawlak, R Tymieniecka, T Wroblewski, AK Zakrzewski, JA Adamus, M Coldewey, C Eisenberg, Y Hochman, D Karshon, U Badgett, WF Chapin, D Cross, R Dasu, S Foudas, C Loveless, RJ Mattingly, S Reeder, DD Smith, WH Vaiciulis, A Wodarczyk, M Deshpande, A Dhawan, S Hughes, VW Bhadra, S Frisken, WR Khakzad, M Schmidke, WB AF Breitweg, J Derrick, M Krakauer, D Magill, S Mikunas, D Musgrave, B Repond, J Stanek, R Talaga, RL Yoshida, R Zhang, H Mattingly, MCK Anselmo, F Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Castellini, G Chiarini, M Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Gialas, I Giusti, P Iacobucci, G Laurenti, G Levi, G Margotti, A Massam, T Nania, R Nemoz, C Palmonari, F Pesci, A Polini, A Ricci, F Sartorelli, G Garcia, YZ Zichichi, A Amelung, C Bornheim, A Brock, I Coboken, K Crittenden, J Deffner, R Eckert, M Grothe, M Hartmann, H Heinloth, K Heinz, L Hilger, E Jakob, HP Katz, UF Kerger, R Paul, E Pfeiffer, M Rembser, C Stamm, J Wedemeyer, R Wieber, H Bailey, DS Campbell-Robson, S Cottingham, WN Foster, B Hall-Wilton, R Hayes, ME Heath, GP Heath, HF McFall, JD Piccioni, D Roff, DC Tapper, RJ Arneodo, M Ayad, R Capua, M Garfagnini, A Iannotti, L Schioppa, M Susinno, G Kim, JY Lee, JH Lim, IT Pac, MY Caldwell, A Cartiglia, N Jing, Z Liu, W Mellado, B Parsons, JA Ritz, S Sampson, S Sciulli, F Straub, PB Zhu, Q Borzemski, P Chwastowski, J Eskreys, A Figiel, J Klimek, K Przybycien, MB Zawiejski, L Adamczyk, L Bednarek, B Bukowy, M Czermak, A Jelen, K Kisielewska, D Kowalski, T Przybycien, M Rulikowska-Zarebska, E Suszycki, L Zajac, J Dulinski, Z Kotanski, A Abbiendi, G Bauerdick, LAT Behrens, U Beier, H Bienlein, JK Cases, G Deppe, O Desler, K Drews, G Fricke, U Gilkinson, DJ Glasman, C Gottlicher, P Haas, T Hain, W Hasell, D Johnson, KF Kasemann, M Koch, W Kotz, U Kowalski, H Labs, J Lindemann, L Lohr, B Lowe, M Manczak, O Milewski, J Monteiro, T Ng, JST Notz, D Ohrenberg, K Park, IH Pellegrino, A Pelucchi, F Piotrzkowski, K Roco, M Rohde, M Roldan, J Ryan, JJ Savin, AA Schneekloth, U Schwarzer, O Selonke, F Surrow, B Tassi, E Voss, T Westphal, D Wolf, G Wollmer, U Youngman, C Zarnecki, AF Zeuner, W Burow, BD Grabosch, HJ Meyer, A Schlenstedt, S Barbagli, G Gallo, E Pelfer, P Anzivino, G Maccarrone, G Votano, L Bamberger, A Eisenhardt, S Markun, P Trefzger, T Wolfle, S Bromley, JT Brook, NH Bussey, PJ Doyle, AT Macdonald, N Saxon, DH Sinclair, LE Strickland, E Waugh, R Bohnet, I Gendner, N Holm, U Meyer-Larsen, A Salehi, H Wick, K Gladilin, LK Horstmann, D Kcira, D Klanner, R Lohrmann, E Poelz, G Schott, W Zetsche, F Bacon, TC Butterworth, I Cole, JE Howell, C Hung, BHY Lamberti, L Long, KR Miller, DB Pavel, N Prinias, A Sedgbeer, JK Sideris, D Walker, R Mallik, U Wang, SM Wu, JT Cloth, P Filges, D Fleck, JI Ishii, T Kuze, M Suzuki, I Tokushuku, K Yamada, S Yamauchi, K Yamazaki, Y Hong, SJ Lee, SB Nam, SW Park, SK Barreiro, F Fernandez, JP Garcia, G Graciani, R Hernandez, JM Hervas, L Labarga, L Martinez, M del Peso, J Puga, J Terron, J de Troconiz, JF Corriveau, F Hanna, DS Hartmann, J Hung, LW Murray, WN Ochs, A Riveline, M Stairs, DG St-Laurent, M Ullmann, R Tsurugai, T Bashkirov, V Dolgoshein, BA Stifutkin, A Bashindzhagyan, GL Ermolov, PF Golubkov, YA Khein, LA Korotkova, NA Korzhavina, IA Kuzmin, VA Lukina, OY Proskuryakov, AS Shcheglova, LM Solomin, AN Zotkin, SA Bokel, C Botje, M Brummer, N Chlebana, F Engelen, J Koffeman, E Kooijman, P van Sighem, A Tiecke, H Tuning, N Verkerke, W Vossebeld, J Vreeswijk, M Wiggers, L de Wolf, E Acosta, D Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Nylander, P Romanowski, TA Blaikley, HE Cashmore, RJ Cooper-Sarkar, AM Devenish, RCE Edmonds, JK Grosse-Knetter, J Harnew, N Nath, C Noyes, VA Quadt, A Ruske, O Tickner, JR Uijterwaal, H Walczak, R Waters, DS Bertolin, A Brugnera, R Carlin, R Dal Corso, F Dosselli, U Limentani, S Morandin, M Posocco, M Stanco, L Stroili, R Voci, C Bulmahn, J Oh, BY Okrasinski, JR Toothacker, WS Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Raso, M Hart, JC McCubbin, NA Shah, TP Barberis, E Epperson, D Heusch, C Rahn, JT Sadrozinski, HFW Seiden, A Wichmann, R Williams, DC Abramowicz, H Briskin, G Dagan, S Kananov, S Levy, A Abe, T Fusayasu, T Inuzuka, M Nagano, K Umemori, K Yamashita, T Hamatsu, R Hirose, T Homma, K Kitamura, S Matsushita, T Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Petrucci, MC Ruspa, M Sacchi, R Solano, A Staiano, A Dardo, M Bailey, DC Fagerstroem, CP Galea, R Hartner, GF Joo, KK Levman, GM Martin, JF Orr, RS Polenz, S Sabetfakhri, A Simmons, D Teuscher, RJ Butterworth, JM Catterall, CD Jones, TW Lane, JB Saunders, RL Sutton, MR Wing, M Ciborowski, J Grzelak, G Kasprzak, M Muchorowski, K Nowak, RJ Pawlak, JM Pawlak, R Tymieniecka, T Wroblewski, AK Zakrzewski, JA Adamus, M Coldewey, C Eisenberg, Y Hochman, D Karshon, U Badgett, WF Chapin, D Cross, R Dasu, S Foudas, C Loveless, RJ Mattingly, S Reeder, DD Smith, WH Vaiciulis, A Wodarczyk, M Deshpande, A Dhawan, S Hughes, VW Bhadra, S Frisken, WR Khakzad, M Schmidke, WB CA ZEUS Collaboration TI Measurement of the t distribution in diffractive photoproduction at HERA SO EUROPEAN PHYSICAL JOURNAL C LA English DT Article ID CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; DESIGN; DISSOCIATION; CONSTRUCTION; PHOTON; SCATTERING; ENERGIES; POMERON; MESONS AB Photon diffractive dissociation, gamma p --> Xp, has been studied at HERA with the ZEUS detector using ep interactions where the virtuality Q(2) Of the exchanged photon is smaller than 0.02 GeV2. The squared four-momentum t exchanged at the proton vertex was determined in the range 0.073 < \t\ < 0.40 GeV2 by measuring the scattered proton in the ZEUS Leading Proton Spectrometer. In the photon-proton centre-of-mass energy interval 176 < W < 225 GeV and for masses of the dissociated photon system 4 < M-x < 32 GeV, the t distribution has an exponential shape, dN/d\t\ proportional to exp (-b\t\), with a slope parameter b = 6.8 +/- 0.9 (stat.)(-1.1)(+1.2) (syst.) GeV-2. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Andrews Univ, Berrien Springs, MI 49104 USA. Univ Bologna, Bologna, Italy. Ist Nazl Fis Nucl, I-40126 Bologna, Italy. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Univ Calabria, Dept Phys, I-87036 Cosenza, Italy. INFN, I-87036 Cosenza, Italy. Chonnam Natl Univ, Kwangju 500757, South Korea. Columbia Univ, Nevis Labs, Irvington, NY USA. Inst Nucl Phys, Krakow, Poland. Acad Min & Met, Fac Phys & Nucl Tech, Krakow, Poland. Jagiellonian Univ, Dept Phys, Krakow, Poland. DESY, D-2000 Hamburg, Germany. DESY, IFH, Zeuthen, Germany. Univ Florence, Florence, Italy. Ist Nazl Fis Nucl, I-50125 Florence, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Freiburg, Fak Phys, Freiburg, Germany. Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland. Univ Hamburg, Inst Expt Phys 1, Hamburg, Germany. Univ Hamburg, Inst Expt Phys 2, D-2000 Hamburg, Germany. Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England. Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA. Forschungszentrum Julich, Inst Kernphys, Julich, Germany. KEK, Inst Nucl & Particle Phys, Tsukuba, Ibaraki 305, Japan. Korea Univ, Seoul 136701, South Korea. Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain. McGill Univ, Dept Phys, Montreal, PQ, Canada. Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan. Moscow Phys Engn Inst, Moscow, Russia. Moscow MV Lomonosov State Univ, Inst Phys Nucl, Moscow, Russia. NIKHEF H, NL-1009 DB Amsterdam, Netherlands. Univ Amsterdam, Amsterdam, Netherlands. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Oxford, Dept Phys, Oxford, England. Univ Padua, Dipartimento Fis, Padua, Italy. Ist Nazl Fis Nucl, Padua, Italy. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Polytech Univ, Sagamihara, Kanagawa, Japan. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, I-00185 Rome, Italy. Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel. Univ Tokyo, Dept Phys, Tokyo 113, Japan. Tokyo Metropolitan Univ, Dept Phys, Tokyo 158, Japan. Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Turin, Fac Sci 2, Turin, Italy. Univ Toronto, Dept Phys, Toronto, ON, Canada. INFN, Alessandria, Italy. UCL, Dept Phys & Astron, London, England. Warsaw Univ, Inst Expt Phys, Warsaw, Poland. Inst Nucl Studies, PL-00681 Warsaw, Poland. Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Yale Univ, Dept Phys, New Haven, CT USA. York Univ, Dept Phys, N York, ON M3J 1P3, Canada. CNR, IROE, I-50127 Florence, Italy. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Solomin, Anatoly/C-3072-2016; Graciani Diaz, Ricardo/I-5152-2016; Capua, Marcella/A-8549-2015; Hernandez Calama, Jose Maria/H-9127-2015; Tassi, Enrico/K-3958-2015; Gladilin, Leonid/B-5226-2011; Morandin, Mauro/A-3308-2016; De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle, Anthony/C-5889-2009; Golubkov, Yury/E-1643-2012; Proskuryakov, Alexander/J-6166-2012; Katz, Uli/E-1925-2013; Wiggers, Leo/B-5218-2015 OI Graciani Diaz, Ricardo/0000-0001-7166-5198; Bailey, David C/0000-0002-7970-7839; Anzivino, Giuseppina/0000-0002-5967-0952; Castellini, Guido/0000-0002-0177-0643; Kasemann, Matthias/0000-0002-0429-2448; Capua, Marcella/0000-0002-2443-6525; Arneodo, Michele/0000-0002-7790-7132; Abbiendi, Giovanni/0000-0003-4499-7562; Hernandez Calama, Jose Maria/0000-0001-6436-7547; Gladilin, Leonid/0000-0001-9422-8636; Morandin, Mauro/0000-0003-4708-4240; De Pasquale, Salvatore/0000-0001-9236-0748; Doyle, Anthony/0000-0001-6322-6195; Katz, Uli/0000-0002-7063-4418; Wiggers, Leo/0000-0003-1060-0520 NR 51 TC 27 Z9 27 U1 1 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6044 EI 1434-6052 J9 EUR PHYS J C JI Eur. Phys. J. C PD APR PY 1998 VL 2 IS 2 BP 237 EP 246 DI 10.1007/s100520050135 PG 10 WC Physics, Particles & Fields SC Physics GA ZK462 UT WOS:000073323300003 ER PT J AU Breitweg, J Derrick, M Krakauer, D Magill, S Mikunas, D Musgrave, B Repond, J Stanek, R Talaga, RL Yoshida, R Zhang, H Mattingly, MCK Anselmo, F Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Castellini, G Chiarini, M Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Gialas, I Giusti, P Iacobucci, G Laurenti, G Levi, G Margotti, A Massam, T Nania, R Nemoz, C Palmonari, F Pesci, A Polini, A Ricci, F Sartorelli, G Garcia, YZ Zichichi, A Amelung, C Bornheim, A Brock, I Coboken, K Crittenden, J Deffner, R Eckert, M Grothe, M Hartmann, H Heinloth, K Heinz, L Hilger, E Jakob, HP Katz, UF Kerger, R Paul, E Pfeiffer, M Rembser, C Stamm, J Wedemeyer, R Wieber, H Bailey, DS Campbell-Robson, S Cottingham, WN Hall-Wilton, R Hayes, ME Heath, GP Heath, GP McFall, JD Piccioni, D Roff, DG Tapper, RJ Arneodo, M Ayad, R Capua, M Garfagnini, A Iannotti, L Schioppa, M Susinno, G Kim, JY Lee, JH Lim, IT Pac, MY Caldwell, A Cartiglia, N Jing, Z Liu, W Mellado, B Parsons, JA Ritz, S Sampson, S Sciulli, F Straub, PB Zhu, Q Borzemski, P Chwastowski, J Eskreys, A Figiel, J Klimek, K Przybycien, MB Zawiejski, L Adamczyk, L Bednarek, B Bukowy, M Czermak, A Jelen, K Kisielewska, D Kowalski, T Przybycien, M Rulikowska-Zarebska, E Suszycki, L Zajac, J Dulinski, Z Kotanski, A Abbiendi, G Bauerdick, LAT Behrens, U Beier, H Bienlein, JK Cases, G Deppe, O Desler, K Drews, G Fricke, U Gilkinson, DJ Glasman, C Gottlicher, P Haas, T Hain, W Hasell, D Johnson, KF Kasemann, M Koch, W Kotz, U Kowalski, H Labs, J Lindemann, L Lohr, B Lowe, M Manczak, O Milewski, J Monteiro, T Ng, JST Notz, D Ohrenberg, K Park, IH Pellegrino, A Pelucchi, F Piotrzkowski, K Roco, M Rohde, M Roldan, J Ryan, JJ Savin, AA Schneekloth, U Schwarzer, O Selonke, F Surrow, B Tassi, E Voss, T Westphal, D Wolf, G Wollmer, U Youngman, C Zarnecki, AF Zeuner, W Burow, BD Grabosch, HJ Meyer, A Schlenstedt, S Barbagli, G Gallo, E Pelfer, P Anzivino, G Maccarrone, G Votano, L Bamberger, A Eisenhardt, S Markun, P Trefzger, T Wolfle, S Bromley, JT Brook, NH Bussey, PJ Doyle, AT Macdonald, N Saxon, DH Sinclair, LE Strickland, E Waugh, R Bohnet, I Gendner, N Holm, U Meyer-Larsen, A Salehi, H Wick, K Gladilin, LK Horstmann, D Kcira, D Klanner, R Lohrmann, E Poelz, G Schott, W Zetsche, F Bacon, TC Butterworth, I Cole, JE Howell, G Hung, BHY Lamberti, L Long, KR Miiller, DB Pavel, N Prinias, A Sedgbeer, JK Sideris, D Walker, R Mallik, U Wang, SM Wu, JT Cloth, P Filges, D Fleck, JI Ishii, T Kuze, M Suzuki, I Tokushuku, K Yamada, S Yamauchi, K Yamazaki, Y Hong, SJ Lee, SB Nam, SW Park, SK Barreiro, F Fernandez, JP Garcia, G Graciani, R Hernandez, JM Hervas, L Labarga, L Martinez, M del Peso, J Puga, J Terron, J de Troconiz, JF Corriveau, F Hanna, DS Hartmann, J Hung, LW Murray, WN Ochs, A Riveline, M Stairs, DG St-Laurent, M Ullmann, R Tsurugai, T Bashkirov, V Dolgoshein, BA Stifutkin, A Bashindzhagyan, GL Ermolov, PF Golubkov, YA Khein, LA Korotkova, NA Korzhavina, IA Kuzmin, VA Lukina, OY Proskuryakov, AS Shcheglova, LM Solomin, AN Zotkin, SA Bokel, C Botje, M Brummer, N Chlebana, F Engelen, J Koffeman, E Kooijman, P van Sighem, A Tiecke, H Tuning, N Verkerke, W Vossebeld, J Vreeswijk, M Wiggers, L de Wolf, E Acosta, D Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Nylander, P Romanowski, TA Blaikley, HE Cashmore, RJ Cooper-Sarkar, AM Devenish, RCE Edmonds, JK Grosse-Knetter, J Harnew, N Nath, C Noyes, VA Quadt, A Ruske, O Tickner, JR Uijterwaal, H Walczak, R Waters, DS Bertolin, A Brugnera, R Carlin, R Dal Corso, F Dosselli, U Limentani, S Morandin, M Posocco, M Stanco, L Stroili, R Voci, C Bulmahn, J Oh, BY Okrasinski, JR Toothacker, WS Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Raso, M Hart, JC McCubbin, NA Shah, TP Barberis, E Epperson, D Heusch, C Rahn, JT Sadrozinski, HFW Seiden, A Wichmann, R Williams, DC Abramowicz, H Briskin, G Dagan, S Kananov, S Levy, A Abe, T Fusayasu, T Inuzuka, M Nagano, K Umemori, K Yamashita, T Hamatsu, R Hirose, T Homma, K Kitamura, S Matsushita, T Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Petrucci, MC Ruspa, M Sacchi, R Solano, A Staiano, A Dardo, M Bailey, DC Fagerstroem, CP Galea, R Hartner, GF Joo, KK Levman, GM Martin, JF Orr, RS Polenz, S Sabetfakhri, A Simmons, D Teuscher, RJ Butterworth, JM Catterall, CD Jones, TW Lane, JB Saunders, RL Sutton, MR Wing, M Ciborowski, J Grzelak, G Kasprzak, M Muchorowski, K Nowak, RJ Pawlak, JM Pawlak, R Tymieniecka, T Wroblewski, AK Zakrzewski, JA Adamus, M Coldewey, C Eisenberg, Y Hochman, D Karshon, U Badgett, WF Chapin, D Cross, R Dasu, S Foudas, C Loveless, RJ Mattingly, S Reeder, DD Smith, WH Vaiciulis, A Wodarczyk, M Deshpande, A Dhawan, S Hughes, VW Bhadra, S Frisken, WR Khakzad, M Schmidke, WB AF Breitweg, J Derrick, M Krakauer, D Magill, S Mikunas, D Musgrave, B Repond, J Stanek, R Talaga, RL Yoshida, R Zhang, H Mattingly, MCK Anselmo, F Antonioli, P Bari, G Basile, M Bellagamba, L Boscherini, D Bruni, A Bruni, G Romeo, GC Castellini, G Chiarini, M Cifarelli, L Cindolo, F Contin, A Corradi, M De Pasquale, S Gialas, I Giusti, P Iacobucci, G Laurenti, G Levi, G Margotti, A Massam, T Nania, R Nemoz, C Palmonari, F Pesci, A Polini, A Ricci, F Sartorelli, G Garcia, YZ Zichichi, A Amelung, C Bornheim, A Brock, I Coboken, K Crittenden, J Deffner, R Eckert, M Grothe, M Hartmann, H Heinloth, K Heinz, L Hilger, E Jakob, HP Katz, UF Kerger, R Paul, E Pfeiffer, M Rembser, C Stamm, J Wedemeyer, R Wieber, H Bailey, DS Campbell-Robson, S Cottingham, WN Hall-Wilton, R Hayes, ME Heath, GP Heath, GP McFall, JD Piccioni, D Roff, DG Tapper, RJ Arneodo, M Ayad, R Capua, M Garfagnini, A Iannotti, L Schioppa, M Susinno, G Kim, JY Lee, JH Lim, IT Pac, MY Caldwell, A Cartiglia, N Jing, Z Liu, W Mellado, B Parsons, JA Ritz, S Sampson, S Sciulli, F Straub, PB Zhu, Q Borzemski, P Chwastowski, J Eskreys, A Figiel, J Klimek, K Przybycien, MB Zawiejski, L Adamczyk, L Bednarek, B Bukowy, M Czermak, A Jelen, K Kisielewska, D Kowalski, T Przybycien, M Rulikowska-Zarebska, E Suszycki, L Zajac, J Dulinski, Z Kotanski, A Abbiendi, G Bauerdick, LAT Behrens, U Beier, H Bienlein, JK Cases, G Deppe, O Desler, K Drews, G Fricke, U Gilkinson, DJ Glasman, C Gottlicher, P Haas, T Hain, W Hasell, D Johnson, KF Kasemann, M Koch, W Kotz, U Kowalski, H Labs, J Lindemann, L Lohr, B Lowe, M Manczak, O Milewski, J Monteiro, T Ng, JST Notz, D Ohrenberg, K Park, IH Pellegrino, A Pelucchi, F Piotrzkowski, K Roco, M Rohde, M Roldan, J Ryan, JJ Savin, AA Schneekloth, U Schwarzer, O Selonke, F Surrow, B Tassi, E Voss, T Westphal, D Wolf, G Wollmer, U Youngman, C Zarnecki, AF Zeuner, W Burow, BD Grabosch, HJ Meyer, A Schlenstedt, S Barbagli, G Gallo, E Pelfer, P Anzivino, G Maccarrone, G Votano, L Bamberger, A Eisenhardt, S Markun, P Trefzger, T Wolfle, S Bromley, JT Brook, NH Bussey, PJ Doyle, AT Macdonald, N Saxon, DH Sinclair, LE Strickland, E Waugh, R Bohnet, I Gendner, N Holm, U Meyer-Larsen, A Salehi, H Wick, K Gladilin, LK Horstmann, D Kcira, D Klanner, R Lohrmann, E Poelz, G Schott, W Zetsche, F Bacon, TC Butterworth, I Cole, JE Howell, G Hung, BHY Lamberti, L Long, KR Miiller, DB Pavel, N Prinias, A Sedgbeer, JK Sideris, D Walker, R Mallik, U Wang, SM Wu, JT Cloth, P Filges, D Fleck, JI Ishii, T Kuze, M Suzuki, I Tokushuku, K Yamada, S Yamauchi, K Yamazaki, Y Hong, SJ Lee, SB Nam, SW Park, SK Barreiro, F Fernandez, JP Garcia, G Graciani, R Hernandez, JM Hervas, L Labarga, L Martinez, M del Peso, J Puga, J Terron, J de Troconiz, JF Corriveau, F Hanna, DS Hartmann, J Hung, LW Murray, WN Ochs, A Riveline, M Stairs, DG St-Laurent, M Ullmann, R Tsurugai, T Bashkirov, V Dolgoshein, BA Stifutkin, A Bashindzhagyan, GL Ermolov, PF Golubkov, YA Khein, LA Korotkova, NA Korzhavina, IA Kuzmin, VA Lukina, OY Proskuryakov, AS Shcheglova, LM Solomin, AN Zotkin, SA Bokel, C Botje, M Brummer, N Chlebana, F Engelen, J Koffeman, E Kooijman, P van Sighem, A Tiecke, H Tuning, N Verkerke, W Vossebeld, J Vreeswijk, M Wiggers, L de Wolf, E Acosta, D Bylsma, B Durkin, LS Gilmore, J Ginsburg, CM Kim, CL Ling, TY Nylander, P Romanowski, TA Blaikley, HE Cashmore, RJ Cooper-Sarkar, AM Devenish, RCE Edmonds, JK Grosse-Knetter, J Harnew, N Nath, C Noyes, VA Quadt, A Ruske, O Tickner, JR Uijterwaal, H Walczak, R Waters, DS Bertolin, A Brugnera, R Carlin, R Dal Corso, F Dosselli, U Limentani, S Morandin, M Posocco, M Stanco, L Stroili, R Voci, C Bulmahn, J Oh, BY Okrasinski, JR Toothacker, WS Whitmore, JJ Iga, Y D'Agostini, G Marini, G Nigro, A Raso, M Hart, JC McCubbin, NA Shah, TP Barberis, E Epperson, D Heusch, C Rahn, JT Sadrozinski, HFW Seiden, A Wichmann, R Williams, DC Abramowicz, H Briskin, G Dagan, S Kananov, S Levy, A Abe, T Fusayasu, T Inuzuka, M Nagano, K Umemori, K Yamashita, T Hamatsu, R Hirose, T Homma, K Kitamura, S Matsushita, T Cirio, R Costa, M Ferrero, MI Maselli, S Monaco, V Peroni, C Petrucci, MC Ruspa, M Sacchi, R Solano, A Staiano, A Dardo, M Bailey, DC Fagerstroem, CP Galea, R Hartner, GF Joo, KK Levman, GM Martin, JF Orr, RS Polenz, S Sabetfakhri, A Simmons, D Teuscher, RJ Butterworth, JM Catterall, CD Jones, TW Lane, JB Saunders, RL Sutton, MR Wing, M Ciborowski, J Grzelak, G Kasprzak, M Muchorowski, K Nowak, RJ Pawlak, JM Pawlak, R Tymieniecka, T Wroblewski, AK Zakrzewski, JA Adamus, M Coldewey, C Eisenberg, Y Hochman, D Karshon, U Badgett, WF Chapin, D Cross, R Dasu, S Foudas, C Loveless, RJ Mattingly, S Reeder, DD Smith, WH Vaiciulis, A Wodarczyk, M Deshpande, A Dhawan, S Hughes, VW Bhadra, S Frisken, WR Khakzad, M Schmidke, WB CA ZEUS Collaboration TI Elastic and proton-dissociative rho(0) photoproduction at HERA SO EUROPEAN PHYSICAL JOURNAL C LA English DT Article ID DOUBLE DIFFRACTION DISSOCIATION; CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; CERN SPS COLLIDER; OF-MASS ENERGY; CROSS-SECTIONS; SCATTERING; DESIGN; CONSTRUCTION; ISR AB Elastic and proton-dissociative p(o) photoproduction (gamma p --> rho(o)p, gamma p --> rho(o)N, respectively, with rho(o) --> pi(+)pi(-)) has been studied in ep interactions at HERA for photon-proton centre-of-mass energies in the range 50 < W < 100 GeV and for \t\ < 0.5 GeV2, where t is the square of the four-momentum transfer at the proton vertex; the results on the proton-dissociative reaction are presented for masses of the dissociated proton system in the range M-N(2) < 0.1W(2). For the elastic process, the pi(+)pi(-) invariant mass spectrum has been investigated as a function of t. As in fixed target experiments, the rho(o) resonance shape is asymmetric; this asymmetry decreases with increasing \t\, as expected in models in which the asymmetry is ascribed to the interference of resonant and non-resonant pi(+)pi(-) production. The cross section has been studied as a function of W; a fit to the resonant part with the form W-a gives a = 0.16 +/- 0.06 (stat.)(-0.15)(+0.11) (syst.). The resonant part of the gamma p --> pi(+)pi(-) p cross section is 11.2 +/- 0.1 (stat.)(-1.2)(+1.1)(syst.) mu b at [W] = 71.7 GeV. The t dependence of the cross section can be described by a function of the type A(rho) exp (-b(rho)\t\ + c(p)t(2)) with b(rho) = 10.9 +/- 0.3 (stat.)(-0.5)(+1.0) (syst.) GeV-2 and c(rho) = 2.7 +/- 0.9 (stat.)(-1.7)(+1.9) (syst.) GeV-4. The t dependence has also been studied as a function of W and a value of the slope of the pomeron trajectory alpha(IP)' = 0.23 +/- 0.15 (stat.)(-0.07)(+0.10), (syst.) GeV-2 has been deduced. The rho(o) spin density matrix elements r(00)(04), r(1-1)(04) and Re[r(10)(04)] have been measured and found to be consistent with expectations based on s-channel helicity conservation. For proton-dissociative pi(+)pi(-) photoproduction in the rho(o) mass range, the distributions of the two-pion invariant mass, Wi and the polar and azimuthal angles of the pions in the helicity frame are the same within errors as those for the elastic process. The t distribution has been fitted to an exponential function with a slope parameter 5.8 +/- 0.3 (stat.) +/- 0.5 (syst.) GeV-2. The ratio of the elastic to proton-dissociative rho(o) photoproduction cross section is 2.0 +/- 0.2 (stat.) +/- 0.7 (syst.). C1 Argonne Natl Lab, Argonne, IL 60439 USA. Andrews Univ, Berrien Springs, MI 49104 USA. Univ Bologna, Bologna, Italy. Ist Nazl Fis Nucl, I-40126 Bologna, Italy. Univ Bonn, Inst Phys, D-5300 Bonn, Germany. Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. Univ Calabria, Dept Phys, I-87036 Cosenza, Italy. INFN, I-87036 Cosenza, Italy. Chonnam Natl Univ, Kwangju, South Korea. Columbia Univ, Nevis Labs, Irvington, NY USA. Inst Nucl Phys, Krakow, Poland. Acad Min & Met, Fac Phys & Nucl Tech, Krakow, Poland. Jagiellonian Univ, Dept Phys, Krakow, Poland. DESY, D-2000 Hamburg, Germany. DESY, IFH, Zeuthen, Germany. Univ Florence, Florence, Italy. Ist Nazl Fis Nucl, I-50125 Florence, Italy. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany. Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland. Univ Hamburg, Inst Expt Phys 1, Hamburg, Germany. Univ Hamburg, Inst Expt Phys 2, Hamburg, Germany. Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England. Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA. Forschungszentrum Julich, Inst Kernphys, Julich, Germany. KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan. Korea Univ, Seoul 136701, South Korea. Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain. McGill Univ, Dept Phys, Montreal, PQ, Canada. Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan. Moscow Phys Engn Inst, Moscow, Russia. Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia. NIKHEF H, NL-1009 DB Amsterdam, Netherlands. Univ Amsterdam, Amsterdam, Netherlands. Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. Univ Oxford, Dept Phys, Oxford, England. Univ Padua, Dipartimento Fis, Padua, Italy. Ist Nazl Fis Nucl, Padua, Italy. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Polytech Univ, Sagamihara, Kanagawa, Japan. Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. Ist Nazl Fis Nucl, Rome, Italy. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel. Univ Tokyo, Dept Phys, Tokyo 113, Japan. Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan. Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy. Univ Turin, Fac Sci 2, Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. INFN, Alessandria, Italy. Univ Toronto, Dept Phys, Toronto, ON, Canada. UCL, Dept Phys & Astron, London, England. Warsaw Univ, Inst Phys Expt, Warsaw, Poland. Inst Nucl Studies, PL-00681 Warsaw, Poland. Weizmann Inst Sci, Dept Particle Phys, Rehovot, Israel. Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Yale Univ, Dept Phys, New Haven, CT USA. York Univ, Dept Phys, N York, ON M3J 1P3, Canada. CNR, IROE, I-50127 Florence, Italy. RP Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Hernandez Calama, Jose Maria/H-9127-2015; Tassi, Enrico/K-3958-2015; Gladilin, Leonid/B-5226-2011; Morandin, Mauro/A-3308-2016; De Pasquale, Salvatore/B-9165-2008; Wing, Matthew/C-2169-2008; Bashkirov, Vladimir/A-4818-2008; Doyle, Anthony/C-5889-2009; Golubkov, Yury/E-1643-2012; Proskuryakov, Alexander/J-6166-2012; Katz, Uli/E-1925-2013; Wiggers, Leo/B-5218-2015; Solomin, Anatoly/C-3072-2016; Graciani Diaz, Ricardo/I-5152-2016; OI Hernandez Calama, Jose Maria/0000-0001-6436-7547; Gladilin, Leonid/0000-0001-9422-8636; Morandin, Mauro/0000-0003-4708-4240; De Pasquale, Salvatore/0000-0001-9236-0748; Doyle, Anthony/0000-0001-6322-6195; Katz, Uli/0000-0002-7063-4418; Wiggers, Leo/0000-0003-1060-0520; Graciani Diaz, Ricardo/0000-0001-7166-5198; Kasemann, Matthias/0000-0002-0429-2448; Arneodo, Michele/0000-0002-7790-7132; Abbiendi, Giovanni/0000-0003-4499-7562 NR 88 TC 128 Z9 128 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6044 EI 1434-6052 J9 EUR PHYS J C JI Eur. Phys. J. C PD APR PY 1998 VL 2 IS 2 BP 247 EP 267 DI 10.1007/s100520050136 PG 21 WC Physics, Particles & Fields SC Physics GA ZK462 UT WOS:000073323300004 ER PT J AU de Yebra, L Ballesca, JL Vanrell, JA Corzett, M Balhorn, R Oliva, R AF de Yebra, L Ballesca, JL Vanrell, JA Corzett, M Balhorn, R Oliva, R TI Detection of P2 precursors in the sperm cells of infertile patients who have reduced protamine P2 levels SO FERTILITY AND STERILITY LA English DT Article DE human sperm; protamines; precursors of protamine P2; antiprotamine antibody; Western blot analysis ID HUMAN SPERMATOZOA; BASIC-PROTEIN; NUCLEI; GENES; EXPRESSION; SEQUENCES; MUTATIONS; CHROMATIN; MOUSE; MEN AB Objective: To determine whether the reduction in the protamine P2 content (increased P1/P2 ratio) reported in some infertile patients could result from incomplete processing of protamine P2 precursors. Design: Analysis of samples with a marked reduction in the protamine P2 content using polyacrylamide gel electrophoresis and subsequent detection of protamine P2 precursors through Western blot analysis. Setting: University departments and laboratories. Patient(s): One hundred eighty-four men undergoing an evaluation for infertility. Main Outcome Measure(s): Comparative Western blot analysis of nuclear sperm proteins using specific antibodies to protamine P1 and protamine P2. Result(s): After selection of the samples with a marked reduction of the protamine P2 content and subsequent analysis by Western blot, a small proportion of putative P2 precursors was detected in most samples, whereas a significant increase was detected in two of them. Conclusion(s): In some infertile men, a reduction in the protamine P2 content relative to protamine P1 (increased P1/P2 ratio) is detected concomitant with an increase in the amount of putative P2 precursors. This could represent the first report of incomplete processing of a nuclear sperm protein in humans. (C) 1998 by American Society for Reproductive Medicine.). C1 Univ Barcelona, Fac Med, Human Genome Res Grp, Barcelona 7, Spain. Hosp Clin & Prov Barcelona, Obstet & Gynecol Unit, Barcelona, Spain. Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA USA. Hosp Clin & Prov, Genet Serv, Barcelona 08036, Spain. RP Oliva, R (reprint author), Hosp Clin & Prov, Genet Serv, Villarroel 170, Barcelona 08036, Spain. EM oliva@medicina.ub.es RI Oliva, Rafael/C-9741-2009 OI Oliva, Rafael/0000-0003-4876-2410 NR 25 TC 109 Z9 111 U1 0 U2 2 PU AMER SOC REPRODUCTIVE MEDICINE PI BIRMINGHAM PA 1209 MONTGOMERY HIGHWAY, BIRMINGHAM, AL 35216-2809 USA SN 0015-0282 J9 FERTIL STERIL JI Fertil. Steril. PD APR PY 1998 VL 69 IS 4 BP 755 EP 759 DI 10.1016/S0015-0282(98)00012-0 PG 5 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA ZF654 UT WOS:000072918700023 PM 9548169 ER PT J AU Haynes, CA Newman, J AF Haynes, CA Newman, J TI On converting from the McMillan-Mayer framework I. Single-solvent system SO FLUID PHASE EQUILIBRIA LA English DT Article DE thermodynamics; McMillan-Mayer (dilute solution) theory; electrolytes ID ELECTROLYTE-SOLUTIONS; ACTIVITY-COEFFICIENTS; POTENTIALS; MODELS AB This paper presents a thermodynamic framework for transforming models derived in the McMillan-Mayer framework into the Gibbs framework G(T, P, n(i)). Historically, the McMillan-Mayer theory has been used to develop the thermodynamics of dilute solutions of electrolytes, polymers and other solutes. The appropriate independent variables for the McMillan-Mayer dilute-solution theory are temperature, volume, chemical potential of the solvent, and number of moles of solutes. Hence, the proper thermodynamic potential is not the Helmholtz energy A(T, V, n(j)) but a modified Helmholtz energy A'(T, V, mu(0), n(j) (j not equal 0)) where A' = A - n(0) mu(0) The most common theoretical developments for electrolyte solutions (e.g., Debye-Huckel theory, mean-spherical approximation) and many dilute polymer solution theories (e.g., osmotic virial expansion) yield excess values of A', not A. As a result, the chemical potential of the solute, or its activity coefficient, should include a term -P-Ex(V) over bar(j)(theta), whose presence has apparently not been explicitly recognized or discussed clearly (P-Ex is an excess pressure, and (V) over bar(j)(theta) is the partial molar volume of solute j). The origin and influence of this additional term are explored. (C) 1998 Elsevier Science B.V. All rights reserved. C1 Univ British Columbia, Biotechnol Lab, Vancouver, BC V6T 1Z3, Canada. Univ British Columbia, Dept Chem Engn, Vancouver, BC V6T 1Z3, Canada. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Haynes, CA (reprint author), Univ British Columbia, Biotechnol Lab, 237 Wesbrook Bldg, Vancouver, BC V6T 1Z3, Canada. RI Newman, John/B-8650-2008 OI Newman, John/0000-0002-9267-4525 NR 33 TC 24 Z9 25 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3812 J9 FLUID PHASE EQUILIBR JI Fluid Phase Equilib. PD APR PY 1998 VL 145 IS 2 BP 255 EP 268 DI 10.1016/S0378-3812(97)00335-X PG 14 WC Thermodynamics; Chemistry, Physical; Engineering, Chemical SC Thermodynamics; Chemistry; Engineering GA ZW974 UT WOS:000074467700006 ER PT J AU Sinha, R Rothman, N Salmon, CP Knize, MG Brown, ED Swanson, CA Rhodes, D Rossi, S Felton, JS Levander, OA AF Sinha, R Rothman, N Salmon, CP Knize, MG Brown, ED Swanson, CA Rhodes, D Rossi, S Felton, JS Levander, OA TI Heterocyclic amine content in beef cooked by different methods to varying degrees of doneness and gravy made from meat drippings SO FOOD AND CHEMICAL TOXICOLOGY LA English DT Article DE heterocyclic amines; beef; cooking method; MeIQx; PhIP; DiMeIQx ID COLON-CANCER; COLORECTAL-CANCER; FOOD MUTAGENS; PAN RESIDUES; DIETARY-FAT; FRIED MEAT; RISK; PRODUCTS; CARCINOGEN; 2-AMINO-1-METHYL-6-PHENYLIMIDAZO<4,5-B>PYRIDINE AB Meats cooked at high temperatures sometimes contain heterocyclic amines (HCAs) that are known mutagens and animal carcinogens, but their carcinogenic potential in humans has not been established. To investigate the association between HCAs and cancer, sources of exposure to these compounds need to be determined. Beef is the most frequently consumed meat in the United States and for this study we determined HCA values in beef samples cooked in ways to represent US cooking practices, the results of which can be used in epidemiological studies to estimate HCA exposure from dietary questionnaires. We measured five HCAs [2-amino-3-methylimidazo[4,5-f]quinoline (IQ), 2-amino-3,4-dimethylimidazo[4,5f]quinoline (MeIQ), 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), 2-amino-3,4,8-trimethylimidazo[4,5f]quinoxaline (DiMeIQx) and 2-amino-1-methyl-6-phenylimidazo-[4,5-b]pyridine (Ph1P)] in different types of cooked beef using solid-phase extraction and HPLC. Steak and hamburger patties were pan-fried, oven-broiled, and grilled/barbecued to four levels of doneness (rare, medium, well done or very well done), while beef roasts were oven cooked to three levels of doneness (rare, medium or well done). The measured values of the specific HCAs varied with the cut of beef, cooking method, and doneness level. In general, MeIQx content increased with doneness under each cooking condition for steak and hamburger patties, up to 8.2 ng/g. PhIP was the predominant HCA produced in steak (1.9 to 30 ng/g), but was formed only in very well done fried or grilled hamburger. DiMeIQx was found in trace levels in pan-fried steaks only, while IQ and MeIQ were not detectable in any of the samples. Roast beef did not contain any of the HCAs, but the gravy made from the drippings from well done roasts had 2 ng/g of PhIP and 7 ng/g of MeIQx. Epidemiological studies need to consider the type of meat, cooking method and degree of doneness/surface browning in survey questions to adequately assess an individual's exposure to HCAs. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 NCI, Div Canc Epidemiol & Genet, NIH, Bethesda, MD 20892 USA. Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA. USDA ARS, Beltsville Agr Res Ctr, Nutrient Requirements & Funct Lab, Beltsville, MD 20705 USA. NCI, Early Detect Branch, DCPC, NIH, Rockville, MD 20892 USA. RP Sinha, R (reprint author), NCI, Div Canc Epidemiol & Genet, NIH, Execut Plaza N,Rm 430,6130 Execut Blvd, Bethesda, MD 20892 USA. RI Sinha, Rashmi/G-7446-2015 OI Sinha, Rashmi/0000-0002-2466-7462 FU NCI NIH HHS [CA55861, YO1CP2-0523-01] NR 29 TC 199 Z9 202 U1 0 U2 20 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0278-6915 J9 FOOD CHEM TOXICOL JI Food Chem. Toxicol. PD APR PY 1998 VL 36 IS 4 BP 279 EP 287 DI 10.1016/S0278-6915(97)00162-2 PG 9 WC Food Science & Technology; Toxicology SC Food Science & Technology; Toxicology GA ZT097 UT WOS:000074048100002 PM 9651044 ER PT J AU Sinha, R Knize, MG Salmon, CP Brown, ED Rhodes, D Felton, JS Levander, OA Rothman, N AF Sinha, R Knize, MG Salmon, CP Brown, ED Rhodes, D Felton, JS Levander, OA Rothman, N TI Heterocyclic amine content of pork products cooked by different methods and to varying degrees of doneness SO FOOD AND CHEMICAL TOXICOLOGY LA English DT Article DE heterocyclic amines; pork; pan-fry; oven-broil; grill; barbecue; microwave; MeIQx; DiMeIQx; PhIP; IQ; MeIQ; meat; hot dog; sausage; pork chop; ham steak ID FRIED MEAT; URINARY-EXCRETION; AROMATIC-AMINES; FOOD MUTAGENS; PAN RESIDUES; CANCER; CARCINOGEN; RISK; FAT; 2-AMINO-1-METHYL-6-PHENYLIMIDAZO<4,5-B>PYRIDINE AB Heterocyclic amines (HCAs) are known mutagens and animal carcinogens produced in meats cooked at high temperature. As pork is the second most frequently consumed meat in the United States, five predominant HCAs [2-amino-3-methylimidazo[4,5-f]quinoline (IQ), 2-amino-3,4-dimethylimidazo[4,5-f]quinoline (MeIQ), 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), 2-amino-3,4,8-trimethylimidazo[4,5-f]quinoxaline (DiMeIQx) and 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP)] were measured in various pork products, cooked by different techniques and to varying doneness levels. Pork chops and ham slices were pan-fried and oven-broiled; bacon was pan-fried, oven-broiled or microwaved: hot dogs were pan-fried, oven-broiled, grilled/barbecued or boiled; sausage links and patties were pan-fried. All the products were cooked to three levels of doneness: just until done, well done or very well done. HCA type and level varied substantially by pork product, cooking method and doneness level. The highest PhIP levels were found in well done and very well done oven-broiled bacon; for very well done 30.3 and 4.0 ng per gram of meat of PhIP and MeIQx, respectively. Pan-fried very well done sausage patties contained 5.4 ng of MeIQx per gram of meat, while sausage links contained 1.3 ng per gram of meat. MeIQx was formed in well done and very well done pan-fried but not broiled pork chops. Hot dogs or ham slices had low or undetectable levers of HCAs. These results demonstrate that epidemiological studies investigating the relationship between HCA intake and cancer risk need to incorporate type of meat, cooking method and degree of doneness/surface browning into questions to assess adequately an individual's HCA exposure. (C) 1998 Elsevier Science Ltd. All rights reserved. C1 NCI, Div Canc Epidemiol & Genet, NIH, Rockville, MD 20892 USA. Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA. USDA ARS, Nutrients Requirements & Funct Lab, BHNRC, Beltsville, MD 20705 USA. RP Sinha, R (reprint author), NCI, Div Canc Epidemiol & Genet, NIH, Execut Plaza N,Rm 430,6130 Execut Blvd, Rockville, MD 20892 USA. RI Sinha, Rashmi/G-7446-2015 OI Sinha, Rashmi/0000-0002-2466-7462 FU NCI NIH HHS [CA55861, YO1CP2-0523-01] NR 30 TC 149 Z9 149 U1 0 U2 12 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0278-6915 J9 FOOD CHEM TOXICOL JI Food Chem. Toxicol. PD APR PY 1998 VL 36 IS 4 BP 289 EP 297 DI 10.1016/S0278-6915(97)00159-2 PG 9 WC Food Science & Technology; Toxicology SC Food Science & Technology; Toxicology GA ZT097 UT WOS:000074048100003 PM 9651045 ER PT J AU Russell, WL Bangham, JW Russell, LB AF Russell, WL Bangham, JW Russell, LB TI Differential response of mouse male germ-cell stages to radiation-induced specific-locus and dominant mutations SO GENETICS LA English DT Article ID BROWN (B)-LOCUS REGION; DILUTION P LOCUS; COMPLEMENTATION ANALYSES; MOLECULAR-GENETICS; MALE-MICE; CHROMOSOME-4; INDUCTION; DELETIONS AB In an attempt to provide a systematic assessment of the frequency and nature of mutations induced in successive stages of spermato- and spermiogenesis, X-irradiated male mice were re-mated at weekly intervals, and large samples of progeny, observed from birth onward, were scored and genetically tested for recessive mutations at seven specific loci and for externally recognizable dominant mutations. Productivity findings provided a rough measure of induced dominant-lethal frequencies. A qualitative assessment of specificlocus mutations (which include deletions and other rearrangements) was made on the basis of homozygosity test results, as well as from information derived from more recent complementation studies and molecular anal!ses. Both recessive and dominant visibles revealed clear distinctions between spermatogonia and postspermatogonial stages. In addition, differences for both of these endpoints, as well as for presumed dominant lethals, were found among various postspermatogonial stages It may be concluded that radiation produces its maximum rates of genetic damage in germ-cell stages ranging from midpachytene spermatocytes through early spermatids, a pattern unlike any of those that have been defined for chemicals; further, the frequency peaks for radiation are lower and broader. The difference between post-stem-cell stages overall and stem-cell spermatogonia was smaller than is generally found with chemicals, not only with respect to the frequency but also the nature of mutations. C1 Oak Ridge Natl Lab, Div Biol, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA. RP Russell, LB (reprint author), Oak Ridge Natl Lab, Div Life Sci, Box 2009,Bear Creek Rd, Oak Ridge, TN 37831 USA. NR 44 TC 42 Z9 43 U1 1 U2 4 PU GENETICS PI BALTIMORE PA 428 EAST PRESTON ST, BALTIMORE, MD 21202 USA SN 0016-6731 J9 GENETICS JI Genetics PD APR PY 1998 VL 148 IS 4 BP 1567 EP 1578 PG 12 WC Genetics & Heredity SC Genetics & Heredity GA ZJ175 UT WOS:000073187000020 PM 9560376 ER PT J AU Huang, JD Cope, MJTV Mermall, V Strobel, MC Kendrick-Jones, J Russell, LB Mooseker, MS Copeland, NG Jenkins, NA AF Huang, JD Cope, MJTV Mermall, V Strobel, MC Kendrick-Jones, J Russell, LB Mooseker, MS Copeland, NG Jenkins, NA TI Molecular genetic dissection of mouse unconventional myosin-VA: Head region mutations SO GENETICS LA English DT Article ID DICTYOSTELIUM-DISCOIDEUM MYOSIN; X-RAY STRUCTURE; HYPERTROPHIC CARDIOMYOPATHY; ANGSTROM RESOLUTION; PURKINJE-CELLS; MOTOR DOMAIN; CHAIN GENE; COMPLEX; EXPRESSION; PROTEINS AB The mouse dilute (d) locus encodes unconventional myosin-VA (MyoVA). Mice carrying null alleles of dilute have a lightened coat color and die from a neurological disorder resembling ataxia and opisthotonus within three weeks of birth. Immunological and ultrastructural studies suggest that MyoVA is involved in the transport of melanosomes in melanocytes and smooth endoplasmic reticulum in cerebellar Purkinje cells. In studies described here, we have used an RT-PCR-based sequencing approach to identify the mutations responsible for 17 viable dilute alleles that vary in their effects on coat color and the nervous system. Seven of these mutations mapped to the MyoVA motor domain and are reported here. Crystallographic modeling and mutant expression studies were used to predict how these mutations might affect motor domain function and to attempt to correlate these effects with the mutant phenotype. C1 NCI, Frederick Canc Res & Dev Ctr, ABL Basic Res Program, Frederick, MD 21702 USA. MRC, Mol Biol Lab, Cambridge CB2 2QH, England. Yale Univ, Dept Biol, New Haven, CT 06520 USA. Yale Univ, Dept Pathol, New Haven, CT 06520 USA. Yale Univ, Dept Cell Biol, New Haven, CT 06520 USA. Oak Ridge Natl Lab, Div Biol, Oak Ridge, TN 37831 USA. RP Jenkins, NA (reprint author), NCI, Frederick Canc Res & Dev Ctr, ABL Basic Res Program, POB B,Bldg 539, Frederick, MD 21702 USA. FU NIDDK NIH HHS [DK-25387]; NIEHS NIH HHS [1-Y01-ES-50318-00] NR 41 TC 48 Z9 48 U1 0 U2 0 PU GENETICS PI BALTIMORE PA 428 EAST PRESTON ST, BALTIMORE, MD 21202 USA SN 0016-6731 J9 GENETICS JI Genetics PD APR PY 1998 VL 148 IS 4 BP 1951 EP 1961 PG 11 WC Genetics & Heredity SC Genetics & Heredity GA ZJ175 UT WOS:000073187000053 PM 9560408 ER PT J AU Huang, JD Mermall, V Strobel, MC Russell, LB Mooseker, MS Copeland, NG Jenkins, NA AF Huang, JD Mermall, V Strobel, MC Russell, LB Mooseker, MS Copeland, NG Jenkins, NA TI Molecular genetic dissection of mouse unconventional myosin-VA: Tail region mutations SO GENETICS LA English DT Article ID MESSENGER-RNA; EXON SEQUENCES; DILUTE GENE; SACCHAROMYCES-CEREVISIAE; GRISCELLI DISEASE; PURKINJE-CELLS; LOCALIZATION; CLONING; IDENTIFICATION; SUBSTITUTIONS AB We used an RT-PCR-based sequencing approach to identify the mutations responsible for 17 viable dilute alleles, a mouse-coat-color locus encoding unconventional myosin-VA. Ten of the mutations mapped to the MyoVA tail and are reported here. These mutations represent the first extensive collection of tail mutations reported for any unconventional mammalian myosin. They identify sequences important for tail function and identify domains potentially involved in cargo binding and/or proper folding of the MyoVA tail. Our results also provide support for the notion that different myosin tail isoforms produced by alternative splicing encode important cell-ripe-specific functions. C1 NCI, Frederick Canc Res & Dev Ctr, ABL Basic Res Program, Frederick, MD 21702 USA. Yale Univ, Dept Biol, New Haven, CT 06520 USA. Yale Univ, Dept Pathol, New Haven, CT 06520 USA. Yale Univ, Dept Cell Biol, New Haven, CT 06520 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Jenkins, NA (reprint author), NCI, Frederick Canc Res & Dev Ctr, ABL Basic Res Program, POB B,Bldg 539, Frederick, MD 21702 USA. EM jenkins@ncifcrf.gov FU NIDDK NIH HHS [DK-25387]; NIEHS NIH HHS [1-Y01-ES-50318-00] NR 50 TC 83 Z9 83 U1 0 U2 2 PU GENETICS PI BALTIMORE PA 428 EAST PRESTON ST, BALTIMORE, MD 21202 USA SN 0016-6731 J9 GENETICS JI Genetics PD APR PY 1998 VL 148 IS 4 BP 1963 EP 1972 PG 10 WC Genetics & Heredity SC Genetics & Heredity GA ZJ175 UT WOS:000073187000054 PM 9560409 ER PT J AU Shannon, M Stubbs, L AF Shannon, M Stubbs, L TI Analysis of homologous XRCC1-linked zinc-finger gene families in human and mouse: Evidence for orthologous genes SO GENOMICS LA English DT Article ID HUMAN-CHROMOSOME 19Q; TRANSCRIPTIONAL REPRESSION; DOMAIN; DNA; PROTEINS; KRUPPEL; ENCODES; DROSOPHILA; SUBFAMILY; SELECTION AB Genetic and physical mapping studies indicate that hundreds of zinc-finger (ZNF)-containing genes populate the human genome and that many of these genes are arranged in familial clusters. However, the extent to which these tandemly arrayed families are conserved among mammalian species is largely unknown. In a previous study, we identified a conserved cluster of Kruppel-associated box (KRAB)-containing ZNF genes located near the XRCC1 gene in human chromosome 19q13.2 and mouse chromosome 7 and analyzed two members of the marine gene family, Zfp93 and Zfp94, in detail. Here we report the identification and characterization of putative human orthologs of these murine genes. The human genes ZFP93 and ZNF45 are substantially similar to their murine counterparts in overall structure, but two notable differences exist between the sets of genes. First, the human genes encode more ZNF repeats than their murine counterparts. Second, the ZNF repeats that are common to orthologs exhibit varying degrees of conservation. Expression studies indicate that the human genes, like their mouse equivalents, are expressed widely and are coexpressed at similar level in most adult tissues. These comparative gene sequence and expression studies therefore suggest that at least two members of the mammalian XRCC1-linked KRAB-ZNF gene family were elaborated prior to the divergence of primate and rodent lineages and were well conserved in human and mouse. (C) 1998 Academic Press. C1 Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Livermore, CA 94550 USA. RP Shannon, M (reprint author), Univ Calif Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, POB 808,L-452, Livermore, CA 94550 USA. EM Mark_Shannon@B361.llnl.gov OI Stubbs, Lisa/0000-0002-9556-1972 NR 37 TC 18 Z9 19 U1 0 U2 0 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0888-7543 J9 GENOMICS JI Genomics PD APR 1 PY 1998 VL 49 IS 1 BP 112 EP 121 DI 10.1006/geno.1998.5230 PG 10 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA ZH973 UT WOS:000073166900013 PM 9570955 ER PT J AU Oakes, CS Pitzer, KS Sterner, SM AF Oakes, CS Pitzer, KS Sterner, SM TI The system NaCl-CaCl2-H2O: Part 3. Heats of dilution and mixing at 373 to 573 K and 21.5 MPa using a new high-temperature, flow-through calorimeter SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID AQUEOUS CALCIUM-CHLORIDE; THERMODYNAMIC PROPERTIES; PHASE-EQUILIBRIA; VOLUMETRIC PROPERTIES; ELECTROLYTE MIXTURES; SODIUM-CHLORIDE; EQUATION; ENTHALPIES; MOLALITIES; CAPACITY AB New heat of mixing and heat of dilution data are presented for the system {NaCl + CaCl2} (aq) at 373, 423, 473, 523, and 573 K and 21.5 MPa. At each temperature heat of mixing measurements were made over an ionic strength range between 0.5 and 4.0 mol.kg(-1) H2O and a constant ionic strength fraction of 0.5. Heats of dilution of CaCl2(aq) were measured at each temperature over the ionic strength range of 0.3-18 mol/kg H2O. All measurements were made using heats of dilution of NaCl(aq) to calibrate the device. CaCl2 dilution enthalpies compare favorably with the available published data to 523 K. Mixing enthalpies at these temperatures have not been previously measured. While dilution enthalpies for the aqueous salt binaries in this system are exothermic, mixing enthalpies are endothermic. At fixed ionic strength and pressure, mixing enthalpies in this system have a roughly quadratic dependence on temperature with a broad minimum between 373 and 473 K. The data have been fit within the Fitter ion-interaction formalism, incorporating published ion-interaction parameters for the aqueous salt binaries. In order to reproduce the data within their accuracy, the model must include the mixing parameters Phi(NaCa)(L) and Psi(NaCaCl)(L). Copyright (C) 1998 Elsevier Science Ltd. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Fluid Inclus Technol, Oklahoma City, OK 74012 USA. RP Oakes, CS (reprint author), Pacific NW Lab, POB 999,MS K9-86, Richland, WA 99352 USA. NR 29 TC 5 Z9 7 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD APR PY 1998 VL 62 IS 7 BP 1133 EP 1146 DI 10.1016/S0016-7037(98)00041-6 PG 14 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZQ658 UT WOS:000073890100004 ER PT J AU Wang, XC Druffel, ERM Griffin, S Lee, C Kashgarian, M AF Wang, XC Druffel, ERM Griffin, S Lee, C Kashgarian, M TI Radiocarbon studies of organic compound classes in plankton and sediment of the northeastern Pacific Ocean SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID CALIFORNIA CURRENT SYSTEM; DEEP-SEA FLOOR; AMINO-ACIDS; MARINE-SEDIMENTS; SEASONAL DEPOSITION; PARTICULATE MATTER; SATELLITE IMAGERY; EARLY DIAGENESIS; PIGMENT BIOMASS; BOMB C-14 AB Radiocarbon (Delta(14)C) and stable carbon isotopes (delta(13)C) were measured in total hydrolyzable amino acid (THAA), total carbohydrate (TCHO), total lipid, and acid-insoluble organic fractions that had been separated from phytoplankton, zooplankton, sediment floc, and sediment samples from an abyssal site in the northeastern Pacific Ocean. THAA, TCHO, and lipid fractions accounted for 91-99% of the total organic carbon (TOC) in phytoplankton and zooplankton, 57% of TOC in sediment floc, and 18-38% of TOC in sediment. Based on concentration profiles in sediment, first-order degradation rate constants below the bioturbation zone were calculated using a "multi-G" model considering both labile and refractory organic fractions. The calculated rate constants were in the order THAA approximate to TCHO > TOC approximate to TN > lipid, indicating the relative reactivities of these compound classes in the sediment during early diagenesis. Bioturbation affected the distributions of these compound classes in the top few centimeters of the sediment. The Delta(14)C values of all organic fractions decreased in the order plankton in surface water to sediment floc to sediments at 4100 m depth. Distinct differences in Delta(14)C exist among THAA, TCHO, and lipid fractions in sediment flee and sediments. The lipid fraction exhibited lower Delta(14)C signatures than THAA and TCHO fractions. Differential decomposition of organic matter and sorption and/or biological incorporation of 'old' DOC into sediment appear to be the major processes that likely control the observed Delta(14)C signatures and abundances. delta(13)C values of the organic compound classes in sediment are similar to their values in plankton indicating that organic matter input to sediment in the northeastern Pacific is mainly from marine sources. Also, distinct delta(13)C signatures were found in each of the four organic fractions. Copyright (C) 1998 Elsevier Science Ltd. C1 Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA. SUNY Stony Brook, Marine Sci Res Ctr, Stony Brook, NY 11794 USA. Univ Calif Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA. RP Wang, XC (reprint author), Univ Massachusetts, Boston, MA 02125 USA. RI Lee, Cindy/B-1456-2009; Kashgarian, Michaele/E-1665-2011 OI Lee, Cindy/0000-0002-7608-6213; Kashgarian, Michaele/0000-0001-7824-8418 NR 80 TC 57 Z9 62 U1 2 U2 35 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD APR PY 1998 VL 62 IS 8 BP 1365 EP 1378 DI 10.1016/S0016-7037(98)00074-X PG 14 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZW044 UT WOS:000074368000006 ER PT J AU Carroll, S Mroczek, E Alai, M Ebert, M AF Carroll, S Mroczek, E Alai, M Ebert, M TI Amorphous silica precipitation (60 to 120 degrees C): Comparison of laboratory and field rates SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID SOLUTION SATURATION STATE; HYDROTHERMAL GROWTH; QUARTZ CRYSTALS; WATER REACTIONS; KINETICS; DISSOLUTION; 80-DEGREES-C; DEPENDENCE; ACID; KAOLINITE AB Amorphous silica precipitation behavior was investigated in simple laboratory experiments and more complex field experiments in the Wairakei, New Zealand, geothermal area. Both the laboratory and field precipitation rates an dependent on reaction affinity for (AB1) SiO2(Am.Si.) +/- 2H(2)O double left right arrow H4SiO4 In simple laboratory solutions supersaturated with respect to amorphous silica by a factor less than 1.3 and in the absence of chemical impurities, precipitation rates have a first-order dependence on f(hG(f)) (AB2) Rate(ppt) ([Si] m(-2) s(-1)) = k(ppt) exp (-E-a/RT) (1 - exp Delta Gr/RT) where k(ppt) = 10(-1. 9) [Si] m(-2) s(-1) and E-a = 61 +/- 1 kJ mol(-1). In more supersaturated and chemically complex field solutions, amorphous silica precipitation rates have a nonlinear dependence on f(Delta G(r)) and may be described by (AB3) Rate(ppt) ([Si] m(-2) s(-1)) = 10-(10.00+/-0.06) (exp Delta G(r)/RT)(4.4+/-0.3) or (AB4) Rate(ppt) ([Si] m(-2) s(-1)) = 10(-9.29+/-0.03) (Delta G(r)/RT)(1.7+/-0.1) The changes in reaction order, form of f(Delta G(r),), and chemical impurities suggest that the dominant amorphous silica precipitation mechanism changes from elementary reaction control in the simple laboratory experiments to surface defect/surface nucleation control in the complex field experiments. Copyright (C) 1998 Elsevier Science Ltd. C1 Lawrence Livermore Natl Lab, Div Earth Sci, Livermore, CA 94450 USA. Wairakei Res Ctr, Inst Geol & Nucl Sci, Wairakei, New Zealand. RP Carroll, S (reprint author), Lawrence Livermore Natl Lab, Div Earth Sci, Livermore, CA 94450 USA. NR 41 TC 70 Z9 73 U1 1 U2 15 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 EI 1872-9533 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD APR PY 1998 VL 62 IS 8 BP 1379 EP 1396 DI 10.1016/S0016-7037(98)00052-0 PG 18 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ZW044 UT WOS:000074368000007 ER PT J AU Grant, JA Brooks, MJ Taylor, BE AF Grant, JA Brooks, MJ Taylor, BE TI New constraints on the evolution of Carolina bays from ground-penetrating radar SO GEOMORPHOLOGY LA English DT Article DE Carolina Bays; ground-penetrating radar; eolian/lacustrine; Holocene ID SOUTH-CAROLINA; COASTAL-PLAIN; UNITED-STATES; ATLANTIC AB Ground-penetrating radar (GPR) data for the Savannah River Site (SRS) in the Upper Coastal Plain of South Carolina, combined with geological, archaeological, and ecological data place new constraints on the evolution of Carolina Bays. Extant SRS bay morphology formed mainly during the Holocene and did not involve migration of bays across the landscape. Multiple periods of bay-rim accretion with intervening intervals of erosion may characterize the longer-term evolution of the bays. Bay evolution, however, did not involve significant modification of the Upland Unit underlying the region. During fluctuating, but generally open water conditions, breaking waves along bay shorelines eroded and transported sediment which was subsequently exposed for deflation during periods of law water. Deflation and transport of sand into standing vegetation along the margin of the bay depression created a rim in the form of a parabolic dune lacking obvious internal stratification. Simultaneously, infilling occurred by shoreline erosion and transport from adjacent elevated surfaces. This, coupled with growth of emergent vegetation, resulted in decreased hydroperiod, wave energy, shoreline modification, and rim accretion. Transport of some rim sediments back into the bays via alluvial and colluvial activity created wedges of infilling sediment during waning stages of evolution. The apparent contradiction of bay orientation with respect to prevailing winds might reflect seasonal changes in water level and wind direction: southwesterly winds during spring high water causes NW-SE elongation of the bays, whereas northwesterly winds during lower water in the fall and winter account for nearshore deflation and rim accretion along the east-southeastern bay margins. (C) 1998 Elsevier Science B.V. C1 SUNY Coll Buffalo, Buffalo, NY 14222 USA. Univ S Carolina, Savannah River Archaeol Res Program, S Carolina Inst Archaeol & Anthropol, New Ellenton, SC 29809 USA. Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Grant, JA (reprint author), SUNY Coll Buffalo, 1300 Elmwood Ave, Buffalo, NY 14222 USA. NR 44 TC 16 Z9 17 U1 2 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-555X J9 GEOMORPHOLOGY JI Geomorphology PD APR PY 1998 VL 22 IS 3-4 BP 325 EP 345 DI 10.1016/S0169-555X(97)00074-3 PG 21 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA ZR008 UT WOS:000073926200007 ER PT J AU Caldeira, K Duffy, PB AF Caldeira, K Duffy, PB TI Sensitivity of simulated CFC-11 distributions in a global ocean model to the treatment of salt rejected during sea-ice formation SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID DEEP CONVECTION; GREENLAND-SEA; MIXED LAYER; CIRCULATION; ATLANTIC; WATER; LEADS AB We show that simulated oceanic absorption of an atmospheric gas is very sensitive to the representation of a process that occurs beneath sea ice. As sea ice forms, salt is rejected, locally increasing surface sea-water density. This dense water can sink to the pycnocline at the base of the mixed-layer. Previous studies have not considered the impact of this subgrid-scale process on transient tracers in the ocean. To assess the potential importance of this process to the oceanic absorption of atmospheric gases, we performed two idealized simulations: a Control simulation in which salt rejected during sea-ice formation is placed in the model's 25 m thick surface layer; and a Test simulation in which salt rejected during sea-ice formation is distributed uniformly through the upper 160 m beneath the forming sea ice. Our treatment of rejected salt is highly idealized, and is intended to demonstrate the need for a physically-based parameterization of subgrid-scale convection for use in ocean general circulation models that takes into account the subgrid-scale heterogeneity of surface buoyancy forcing. Distributing rejected salt more deeply during periods of ice formation helps to maintain vertical density gradients, inhibiting grid-scale convection, especially in the Southern Ocean. This greatly diminishes simulated ocean uptake of CFC-11, and generally improves simulated CFC-11 and salinity fields. The modeled global ocean inventory of CFC-11 for year 1990 is about 30% lower, and modeled column inventories in the Southern Ocean are up to 90% lower, in our Test simulation relative to our Control simulation. We infer that a more detailed treatment of subgrid-scale processes occurring beneath sea ice may diminish simulated oceanic absorption of anthropogenic CO2, especially in the Southern Ocean. C1 Univ Calif Lawrence Livermore Natl Lab, Climate Syst Modeling Grp, Livermore, CA 94550 USA. RP Caldeira, K (reprint author), Univ Calif Lawrence Livermore Natl Lab, Climate Syst Modeling Grp, L-103, Livermore, CA 94550 USA. RI Caldeira, Ken/E-7914-2011 NR 20 TC 13 Z9 14 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD APR 1 PY 1998 VL 25 IS 7 BP 1003 EP 1006 DI 10.1029/98GL00336 PG 4 WC Geosciences, Multidisciplinary SC Geology GA ZE646 UT WOS:000072815400018 ER PT J AU Wisian, KW Blackwell, DD Bellani, S Henfling, JA Normann, RA Lysne, PC Forster, A Schrotter, J AF Wisian, KW Blackwell, DD Bellani, S Henfling, JA Normann, RA Lysne, PC Forster, A Schrotter, J TI Field comparison of conventional and new technology temperature logging systems SO GEOTHERMICS LA English DT Article DE geothermal wells; temperature measurements; logging systems; optical fibre ID BOREHOLES AB Field tests were conducted in the summer of 1995 on four state-of-the-art temperature logging systems: an analog, electric-line, system; two pressure and temperature recording memory tools (in-hole computer systems); and a Distributed optical fibre Temperature Sensing (DTS) system. The tools produced accurate, detailed, temperature versus depth and temperature gradient versus depth logs at depths to 2 km and temperatures to 200 degrees C. Absolute temperature differences up to 0.4 degrees C were noted between tools. The computer and electric-line tools have significantly better precision and resolution than the DTS, but the DTS has the advantage of being able to measure temperature instantaneously throughout the hole, and would be well suited for monitoring dynamic systems and gas-filled wells. The multiple independent logs demonstrate that most of the "noise" seen in gradient logs is due to convection cells, which may have dimensions several times the borehole diameter, and that these convection cells are currently the limiting factor in resolving wellbore temperatures in most settings. (C) 1998 CNR. Published by Elsevier Science Ltd. C1 So Methodist Univ, Dept Geol Sci, Dallas, TX 75275 USA. Natl Res Council, Int Inst Geothermal Res, Pisa, Italy. Sandia Natl Labs, Geothermal Res Dept, Albuquerque, NM 87185 USA. Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany. RP Wisian, KW (reprint author), So Methodist Univ, Dept Geol Sci, Dallas, TX 75275 USA. NR 20 TC 19 Z9 19 U1 0 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0375-6505 J9 GEOTHERMICS JI Geothermics PD APR PY 1998 VL 27 IS 2 BP 131 EP 141 DI 10.1016/S0375-6505(97)10013-X PG 11 WC Energy & Fuels; Geosciences, Multidisciplinary SC Energy & Fuels; Geology GA ZW505 UT WOS:000074417700001 ER PT J AU Shingleton, KL Lee, DW AF Shingleton, KL Lee, DW TI Radioactive sealed source accountability - A risk-based approach SO HEALTH PHYSICS LA English DT Article DE radioactive materials; radiation protection; safety standards; risk analysis AB This paper provides a risk-based approach for establishing threshold accountability values for radioactive sealed sources based on current scientific information and realistic assumptions. Although this paper focuses specifically on accountability thresholds, the methodology provided can be easily modified to determine risk-based exemption and licensing thresholds. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 16 TC 1 Z9 1 U1 1 U2 1 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD APR PY 1998 VL 74 IS 4 BP 435 EP 441 DI 10.1097/00004032-199804000-00003 PG 7 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA ZD057 UT WOS:000072646500004 PM 9525416 ER PT J AU Reginatto, M Shebell, P Miller, KM AF Reginatto, M Shebell, P Miller, KM TI An alternative approach to hot spot identification using in situ gamma spectrometry measurements on a grid SO HEALTH PHYSICS LA English DT Article DE contamination, environmental; spectrometry, gamma; soil; computers AB We describe the application of a computer code developed to analyze data from a series of in situ gamma spectrometry measurements on a grid, The code was designed to be used as a tool when evaluating compliance with regulations that set limits on the size and magnitude of elevated activity areas (also known as "hot spots"). It calculates location and magnitude of potential elevated activity areas consistent with the data, and for each potential elevated area it generates a corresponding distribution of radionuclides in the soil, The algorithm uses a maximum entropy deconvolution of the data, followed by further analysis, A test case using data from actual field measurements is presented. C1 US DOE, Environm Measurements Lab, New York, NY 10014 USA. NR 12 TC 0 Z9 0 U1 0 U2 1 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD APR PY 1998 VL 74 IS 4 BP 481 EP 485 DI 10.1097/00004032-199804000-00011 PG 5 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA ZD057 UT WOS:000072646500012 PM 9525424 ER PT J AU Fukui, Y Doskey, PV AF Fukui, Y Doskey, PV TI A measurement technique for organic nitrates and halocarbons in ambient air SO HRC-JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY LA English DT Article DE PAN; peroxyacetyl nitrate; alkyl nitrate; chlorinated hydrocarbons; halocarbons; capillary GC-ECD ID PEROXYACETYL NITRATE; ALKYL NITRATES; UNITED-STATES; REACTIVE NITROGEN; PAN; TROPOSPHERE; SITE; GAS AB A cryogenic preconcentration/high-resolution gas chromatographic technique has been developed for the rapid, simultaneous quantitation of C-1-C-4 organic nitrates and halocarbons in ambient air. Whole-air samples are collected in Tedlar(TM) bags by an evacuated-chamber method. Samples were stable in 0.010-cm-thick bags for 24 h if they were immediately stored in a freezer at -25 degrees C. Analytes in a 50-cm(3) air sample were efficiently preconcentrated on fused-silica beads at -180 degrees C and thermally desorbed at 30 degrees C. High-resolution gas chromatography with a cross-linked polydimethylsiloxane fused-silica capillary column and an electron-capture detector were used for separation and quantitation of the analytes, An analysis time of about 12 min was facilitated by sample cryofocusing at -180 degrees C and oven temperature programming. Recoveries of the analytes by the evacuated-chamber method were better than 95%, The sensitivity of the technique for sample volumes of 50 cm(3) is in the sub-parts-per-trillion by volume (ppt[v]) range for many of the analytes, with an average precision of about +/-5% for analytes at levels of about 10 ppt(v). C1 Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA. RP Doskey, PV (reprint author), Argonne Natl Lab, Div Environm Res, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 22 TC 3 Z9 3 U1 1 U2 2 PU WILEY-V C H VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0935-6304 J9 HRC-J HIGH RES CHROM JI HRC-J. High Resolut. Chromatogr. PD APR PY 1998 VL 21 IS 4 BP 201 EP 208 PG 8 WC Chemistry, Analytical SC Chemistry GA ZQ390 UT WOS:000073856400001 ER PT J AU Kelly, EJ Roy-Harrison, W AF Kelly, EJ Roy-Harrison, W TI A mathematical construct for ecological risk: A useful framework for assessments SO HUMAN AND ECOLOGICAL RISK ASSESSMENT LA English DT Editorial Material C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. Dept Energy, Def Programs, Germantown, MD USA. RP Kelly, EJ (reprint author), Univ Calif Los Alamos Natl Lab, Mailstop K557, Los Alamos, NM 87545 USA. NR 7 TC 4 Z9 4 U1 0 U2 1 PU CRC PRESS INC PI BOCA RATON PA 2000 CORPORATE BLVD NW, JOURNALS CUSTOMER SERVICE, BOCA RATON, FL 33431 USA SN 1080-7039 J9 HUM ECOL RISK ASSESS JI Hum. Ecol. Risk Assess. PD APR PY 1998 VL 4 IS 2 BP 229 EP 241 DI 10.1080/10807039891284299 PG 13 WC Biodiversity Conservation; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA ZL600 UT WOS:000073450600002 ER PT J AU Helton, JC Johnson, JD Jow, HN McCurley, RD Rahal, LJ AF Helton, JC Johnson, JD Jow, HN McCurley, RD Rahal, LJ TI Stochastic and subjective uncertainty in the assessment of radiation exposure at the waste isolation pilot plant SO HUMAN AND ECOLOGICAL RISK ASSESSMENT LA English DT Article DE Aleatory uncertainty; epistemic uncertainty; radiation exposure; radioactive waste disposal; sensitivity analysis; stochastic uncertainty; subjective uncertainty; uncertainty analysis; Waste Isolation Pilot Plant ID EPA RELEASE LIMITS; PRELIMINARY PERFORMANCE ASSESSMENT; CUMULATIVE DISTRIBUTION-FUNCTIONS; SENSITIVITY ANALYSIS TECHNIQUES; DISPOSAL; RISK; CONSTRUCTION; MODELS AB The Waste Isolation Pilot Plant (WIPP) is under development by the U.S. Department of Energy as a geologic (i.e., deep underground) disposal facility for transuranic waste. An analysis is presented of possible radiation exposures associated with inadvertent drilling intrusions through the WIPP using future drilling rates obtained in accordance with requirements specified by the U.S. Environmental Protection Agency (EPA) in 40 CFR 194, Subpart B. The analysis attempts to maintain a separation between stochastic (i.e., aleatory) and subjective (i.e., epistemic) uncertainty as implied in the EPA regulations 40 CFR 191, Subpart B, and 40 CFR 194. The results of the analysis are presented as distributions of complementary cumulative distribution functions (CCDFs) for radiation exposure to oil field workers, where the individual CCDFs arise from stochastic uncertainty (i.e., many possible patterns of drilling intrusions are possible over the 10,000 yr period specified in 40 CFR 191, Subpart B) and the distributions of CCDFs arise from subjective uncertainty (i.e., many inputs to the analysis have fixed, but poorly known, values). The projected radiation exposures during the 10,000 yr period following decommissioning of the WIPP in the year 2033 were found to be small (typically less than 0.001 person-Sv), with the dominant exposure pathway being the incidental ingestion of contaminated dirt by drilling crew members. C1 Sandia Natl Labs, Dept 6848, Albuquerque, NM 87185 USA. Arizona State Univ, Dept Math, Tempe, AZ 85287 USA. New Mexico Engn Res Inst, Albuquerque, NM USA. Geoctr Inc, Albuquerque, NM 87106 USA. RP Helton, JC (reprint author), Sandia Natl Labs, Dept 6848, MS 0779, Albuquerque, NM 87185 USA. NR 99 TC 11 Z9 11 U1 4 U2 4 PU CRC PRESS INC PI BOCA RATON PA 2000 CORPORATE BLVD NW, JOURNALS CUSTOMER SERVICE, BOCA RATON, FL 33431 USA SN 1080-7039 J9 HUM ECOL RISK ASSESS JI Hum. Ecol. Risk Assess. PD APR PY 1998 VL 4 IS 2 BP 469 EP 526 DI 10.1080/10807039891284433 PG 58 WC Biodiversity Conservation; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA ZL600 UT WOS:000073450600014 ER PT J AU Walker, IS Wilson, DJ AF Walker, IS Wilson, DJ TI Field validation of algebraic equations for stack and wind driven air infiltration calculations SO HVAC&R RESEARCH LA English DT Article AB Explicit algebraic equations for calculation of wind and stack driven ventilation were developed by parametrically matching exact solutions to the flow equations for building envelopes. These separate wind and stack effect flow calculation procedures were incorporated in a simple natural ventilation model, AIM-2, with empirical functions for superposing wind and stack effect, and for estimating wind shelter. There were three major improvements over previous simplified ventilation calculations: a power law pressure-flow relationship is used to develop the flow equations form first principles, the furnace or fireplace flue is included as a separate leakage site, and the model differentiates between houses with basements, slab-on-grade, and crawlspaces. Over 3400 hours of measured ventilation rates from the test houses at the Alberta Home Heating Research Facility were used to validate the predictions of ventilation rates and to compare the AIM-2 predictions to those of other ventilation models. The AIM-2 model had bias and scatter errors of less than 15% for wind-dominated ventilation, and less than 7% for buoyancy (stack-effect) dominated cases. C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Alberta, Dept Engn Mech, Edmonton, AB, Canada. RP Walker, IS (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 31 TC 24 Z9 25 U1 2 U2 9 PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC, PI ATLANTA PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA SN 1078-9669 J9 HVAC&R RES JI HVAC&R Res. PD APR PY 1998 VL 4 IS 2 BP 119 EP 139 DI 10.1080/10789669.1998.10391395 PG 21 WC Thermodynamics; Construction & Building Technology; Engineering, Mechanical SC Thermodynamics; Construction & Building Technology; Engineering GA ZL596 UT WOS:000073450200002 ER PT J AU Max, N AF Max, N TI My six years to evert a sphere SO IEEE ANNALS OF THE HISTORY OF COMPUTING LA English DT Editorial Material C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Max, N (reprint author), Univ Calif Lawrence Livermore Natl Lab, Mail Stop L-307,7000 East Ave, Livermore, CA 94550 USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA SN 1058-6180 J9 IEEE ANN HIST COMPUT JI IEEE Ann. Hist. Comput. PD APR-JUN PY 1998 VL 20 IS 2 BP 42 EP 42 PG 1 WC Computer Science, Theory & Methods; History & Philosophy Of Science SC Computer Science; History & Philosophy of Science GA ZJ649 UT WOS:000073237800011 ER PT J AU Byrne, RH Abdallah, CT Dorato, P AF Byrne, RH Abdallah, CT Dorato, P TI Experimental results in robust lateral control of highway vehicles SO IEEE CONTROL SYSTEMS MAGAZINE LA English DT Article AB Vehicle lateral dynamics are affected by vehicle mass, longitudinal velocity, vehicle inertia, and the cornering stiffness of the tires. All of these parameters are subject to variation, even over the course of a single trip. Therefore, a practical lateral control system must guarantee stability, and hopefully ride comfort, over a wide range of parameter changes. This article describes a robust controller that theoretically guarantees stability over a wide range of parameter changes. The performance of the robust controller is then evaluated in simulation as well as on a test vehicle. Test results for experiments conducted on an instrumented track are presented, comparing the robust controller to a PID controller that was tuned on the vehicle. C1 Sandia Natl Labs, Tech Staff, Albuquerque, NM 87185 USA. Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA. RP Byrne, RH (reprint author), Sandia Natl Labs, Tech Staff, POB 5800, Albuquerque, NM 87185 USA. NR 0 TC 14 Z9 14 U1 1 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA SN 0272-1708 J9 IEEE CONTR SYST MAG JI IEEE Control Syst. Mag. PD APR PY 1998 VL 18 IS 2 BP 70 EP 76 DI 10.1109/37.664657 PG 7 WC Automation & Control Systems SC Automation & Control Systems GA ZD002 UT WOS:000072641000007 ER PT J AU Bowers, MW Boyd, RW AF Bowers, MW Boyd, RW TI Phase locking via Brillouin-enhanced four-wave-mixing phase conjugation SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article DE birefringence; Brillouin scattering; optical phase conjugation; pulsed lasers; Q-switched lasers; YAG lasers ID SCATTERING BEAM COMBINATION; SOLID-STATE LASERS; FLUCTUATIONS; LIGHT; EFFICIENCY; FRONT AB We show that it is possible to control with good accuracy the relative phase of several conjugate beams for a properly designed Brillouin-enhanced four wave-mixing phase conjugation system. Three geometries, two that utilize two Brillouin cells and another that requires only one Brillouin cell, that achieve conjugate phase control are studied and many properties of each system are examined. We show that for our high-power laser application the one-cell geometry performs as well as or better than the other geometry. Phase control is shown to be useful for beam combination, vector phase conjugation, and optical path selection, A laser system that utilizes the one-cell geometry to enhance its performance is built and examined. C1 Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Rochester, Inst Opt, Rochester, NY 14627 USA. RP Bowers, MW (reprint author), Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 36 TC 27 Z9 29 U1 1 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD APR PY 1998 VL 34 IS 4 BP 634 EP 644 DI 10.1109/3.663441 PG 11 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA ZD618 UT WOS:000072704900006 ER PT J AU Noble, MJ Shin, JH Choquette, KD Loehr, JP Lott, JA Lee, YH AF Noble, MJ Shin, JH Choquette, KD Loehr, JP Lott, JA Lee, YH TI Calculation and measurement of resonant-mode blueshifts in oxide-apertured VCSEL's SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article DE cavity resonators; laser modes; optical resonators; semiconductor lasers; surface-emitting lasers ID SURFACE-EMITTING LASERS AB As the aperture size of oxide-apertured vertical-cavity surface-emitting lasers (VCSEL's) shrinks, the lasing wavelength blueshifts. We have calculated this effect using both a scalar effective index model and a full-vector weighted index model. Results were compared against experimental data fbr two different VCSEL designs emitting near 780 and 850 nm. We find that the full-vector weighted index calculation matches the data remarkably well, while the scalar effective index calculation underestimates the blueshift. C1 USAF, Inst Technol AFITENG, Wright Patterson AFB, OH 45433 USA. Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea. Sandia Natl Labs, Ctr Cpd Semicond Sci & Technol, Albuquerque, NM 87185 USA. USAF, Avion Directorate WLAADP, Heterojunct Phys Branch, Wright Patterson AFB, OH 45433 USA. RP Noble, MJ (reprint author), USAF, Inst Technol AFITENG, Wright Patterson AFB, OH 45433 USA. RI Lee, Yong Hee/C-2015-2011 NR 10 TC 18 Z9 18 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA SN 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD APR PY 1998 VL 10 IS 4 BP 475 EP 477 DI 10.1109/68.662565 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA ZD755 UT WOS:000072720300001 ER PT J AU Gray, MG Booth, TE Kwan, TJT Snell, CM AF Gray, MG Booth, TE Kwan, TJT Snell, CM TI A multicomb variance reduction scheme for Monte Carlo semiconductor simulators SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article DE importance sampling; Monte Carlo device simulation; particle comb; population control; variance reduction ID IMPURITY SCATTERING AB We adapt a multicomb variance reduction technique used in neutral particle transport to Monte Carlo microelectronic device modeling, We implement the method in a two-dimensional (2-D) MOSFET device simulator and demonstrate its effectiveness in the study of hot electron effects. Our simulations shaw that the statistical variance of hot electrons is significantly reduced with minimal computational cost, The method is efficient, versatile, and easy to implement in existing device simulators. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Gray, MG (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. NR 13 TC 9 Z9 9 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD APR PY 1998 VL 45 IS 4 BP 918 EP 924 DI 10.1109/16.662803 PG 7 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA ZD214 UT WOS:000072662800024 ER PT J AU Williams, MB Sealock, RM Majewski, S Weisenberger, AG AF Williams, MB Sealock, RM Majewski, S Weisenberger, AG TI PET detector using waveshifting optical fibers and microchannel plate PMT with delay line readout SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article DE depth of interaction; microchannel plates; waveshifting fiber ID POSITRON EMISSION MAMMOGRAPHY; BREAST-CANCER; DESIGN; SCINTILLATORS; TOMOGRAPH; CAMERA; MODULE; SYSTEM; DEPTH AB We are developing a positron emission tomography (PET) detector with depth of interaction (DOI) sensitivity for breast and small animal imaging. Tbe detector uses layers of high density scintillators sandwiched between orthogonal ribbons of wavelength shifting optical fibers. The fibers are coupled to microchannel plate (MCP)-based position sensitive photomultiplier tubes (PSPMT's) containing a crossed delay line readout anode. Preliminary measurements have been made using blue-green waveshifting fiber ribbons coupled to Lu-2(SiO4)O:Ce (LSO). The measured photoelectron yield due to wavelength shifted light from the fibers is sufficient to ensure a Poisson probability of only 1.0% that no photoelectron is generated in a given MCP PSPMT. Measurement of internally reflected scintillation light permits energy resolution of better than 25% at 511 keV. Optical fiber readout of high density inorganic crystals provides a significantly larger detective area per unit phototube area than do one-to-one coupling schemes using PSPMT's. With its ability to accurately image single photons, the MCP PSPMT solves problems that have prevented other types of PSPMT's from being used in such a configuration, namely poor resolution at the low Light output level of the optical fibers. C1 Univ Virginia, Dept Radiol & Phys, Charlottesville, VA 22908 USA. Univ Virginia, Dept Phys, Charlottesville, VA 22908 USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Williams, MB (reprint author), Univ Virginia, Dept Radiol & Phys, Charlottesville, VA 22908 USA. NR 35 TC 13 Z9 13 U1 1 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 USA SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD APR PY 1998 VL 45 IS 2 BP 195 EP 205 DI 10.1109/23.664171 PG 11 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA ZG248 UT WOS:000072982000008 ER PT J AU Yushkov, GY Anders, A AF Yushkov, GY Anders, A TI Effect of the pulse repetition rate on the composition and ion charge-state distribution of pulsed vacuum arcs SO IEEE TRANSACTIONS ON PLASMA SCIENCE LA English DT Article ID MAGNETIC-FIELD; PLASMA; GENERATION AB The plasma composition and ion charge-state distributions of pulsed vacuum arcs have been investigated for carbon, aluminum, silver, platinum, and tantalum cathodes using a time-of-flight (TOF) charge-to-mass spectrometer. With the exception of carbon, it was found that all results depend on the are pulse repetition rate, a fact which, up to now, has not been reported in the literature. It is shown that adsorption of gas on the cathode between are pulses leads to contamination of the metal plasma and to a reduction of metal ion charge states. These usually undesired effects can be avoided by operating at high are pulse repetition rates of order 10 Hz or more. The results can be interpreted in terms of cathode spot type 1 (on contaminated cathode surfaces) and type 2 (on clean surfaces) which are well known from their different brightness and erosion behavior, The transition between these modes was found to be gradual. C1 Russian Acad Sci, Inst High Current Elect, Tomsk 634055, Russia. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Russian Acad Sci, Inst High Current Elect, Tomsk 634055, Russia. RI Anders, Andre/B-8580-2009; Yushkov, Georgy/O-8024-2015 OI Anders, Andre/0000-0002-5313-6505; Yushkov, Georgy/0000-0002-7615-6058 NR 33 TC 36 Z9 36 U1 1 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0093-3813 EI 1939-9375 J9 IEEE T PLASMA SCI JI IEEE Trans. Plasma Sci. PD APR PY 1998 VL 26 IS 2 BP 220 EP 226 DI 10.1109/27.669634 PG 7 WC Physics, Fluids & Plasmas SC Physics GA ZM008 UT WOS:000073495500013 ER PT J AU Parker, LE AF Parker, LE TI ALLIANCE: An architecture for fault tolerant multirobot cooperation SO IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION LA English DT Article DE ALLIANCE; control architecture; fault tolerance; multirobot cooperation ID ROBOT AB ALLIANCE is a software architecture that facilitates the fault tolerant cooperative control of teams of heterogeneous mobile robots performing missions composed of loosely coupled subtasks that may have ordering dependencies, ALLIANCE allows teams of robots, each of which possesses a variety of high-level functions that it can perform during a mission, to individually select appropriate actions throughout the mission based on the requirements of the mission, the activities of other robots, the current environmental conditions, and the robot's own internal states, ALLIANCE is a fully distributed, behavior-based architecture that incorporates the use of mathematically-modeled motivations (such as impatience and acquiescence) within each robot to achieve adaptive action selection, Since cooperative robotic teams usually work in dynamic and unpredictable environments, this software architecture allows the robot team members to respond robustly, reliably, flexibly, and coherently to unexpected environmental changes and modifications in the robot team that may occur due to mechanical failure, the learning of new skills, or the addition or removal of robots from the team by human intervention. The feasibility of this architecture is demonstrated in an implementation on a team of mobile robots performing a laboratory version of hazardous waste cleanup. C1 Oak Ridge Natl Lab, Ctr Engn Syst Adv Res, Oak Ridge, TN 37831 USA. RP Oak Ridge Natl Lab, Ctr Engn Syst Adv Res, Oak Ridge, TN 37831 USA. RI Franco-Hurtado, Fernando/E-5599-2017 OI Franco-Hurtado, Fernando/0000-0001-5775-0150 NR 41 TC 547 Z9 575 U1 3 U2 44 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1042-296X J9 IEEE T ROBOTIC AUTOM JI IEEE Trans. Robot. Autom. PD APR PY 1998 VL 14 IS 2 BP 220 EP 240 DI 10.1109/70.681242 PG 21 WC Automation & Control Systems; Engineering, Electrical & Electronic; Robotics SC Automation & Control Systems; Engineering; Robotics GA ZF029 UT WOS:000072855600003 ER PT J AU Sharan, RN Schneeweiss, FHA Saikia Jr Feinendegen, LE AF Sharan, RN Schneeweiss, FHA Saikia, JR Feinendegen, LE TI Poly-ADP-ribosylation of histone proteins of human kidney T1-cells in vitro following gamma-irradiation SO INDIAN JOURNAL OF BIOCHEMISTRY & BIOPHYSICS LA English DT Article ID POLY(ADP-RIBOSE) SYNTHESIS; CHROMATIN STRUCTURE; DNA-DAMAGE; METABOLISM; MECHANISM; REPAIR; RIBOSE; CELLS AB Poly-ADP-ribosylation of cellular proteins is involved with radiation induced damage and its repair. It has been observed that suspension of human kidney T1-cells in vitro attained elevated levels of poly-ADP-ribosylation due to experimental manipulations necessary for preparation of single cell suspension from monolayer cell cultures. These cells in suspension were exposed to various doses of gamma-rays with or without subsequent repair incubation. The PADPR of histones H3, H1 and H2B increased with increasing dose of radiation and decreased after 90 min of repair incubation. Concomitant with these changes, the affinity of histones to DNA in chromatin reduced immediately after irradiation Normal affinity was reestablished after post-irradiation repair incubation. The results indicate that induction of poly-ADP-ribosylation of histone proteins by radiation and by manipulations to prepare single cell suspension involved different cellular components. C1 NE Hill Univ, Dept Biochem, Radiat & Mol Biol Unit, Shillong 793022, Meghalaya, India. Forschungszentrum Julich, Inst Med, D-52425 Julich, Germany. US DOE, Med Applicat & Biophys Res Div, Washington, DC 20585 USA. RP Sharan, RN (reprint author), NE Hill Univ, Dept Biochem, Radiat & Mol Biol Unit, Shillong 793022, Meghalaya, India. EM sharan@nehus.ren.nic.in RI Sharan, Rajeshwar/L-3007-2016 OI Sharan, Rajeshwar/0000-0002-7120-8023 NR 25 TC 4 Z9 4 U1 0 U2 0 PU NATL INST SCIENCE COMMUNICATION PI NEW DELHI PA DR K S KRISHNAN MARG, NEW DELHI 110 012, INDIA SN 0301-1208 J9 INDIAN J BIOCHEM BIO JI Indian J. Biochem. Biophys. PD APR PY 1998 VL 35 IS 2 BP 97 EP 102 PG 6 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA ZT833 UT WOS:000074132300006 PM 9753868 ER PT J AU Perona, JJ Hylton, TD Youngblood, EL Cummins, RL AF Perona, JJ Hylton, TD Youngblood, EL Cummins, RL TI Jet mixing of liquids in long horizontal cylindrical tanks SO INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH LA English DT Article AB Large storage tanks may require mixing to achieve homogeneity of contents for several reasons: prior to sampling for mass balance purposes, for blending in reagents, for suspending settled solids for removal, or for use as a feed tank to a process. At Oak Ridge National Laboratory, mixed waste evaporator concentrates are stored in similar to 190-m(3) (50000-gal) horizontal tanks, about 3.7 m (12 ft) in diameter and 18 m (60 ft) in length. This tank configuration has the advantage of permitting transport by truck and therefore fabrication in the shop rather than in the field. A survey of the literature revealed no information on mixing large storage tanks with length-to-diameter ratios greater than 2. Jet mixing experiments were carried out in two model tanks: a 0.87-m(3) (230-gal) Plexiglas tank that was similar to 1/6 linear scale of the actual waste tanks and a 95-m(3) (25000-gal) tank that was about 2/3 linear scale of the actual waste tanks. Mixing times were measured by the use of a sodium chloride tracer and several conductivity probes distributed throughout the tanks. Several jet sizes and configurations were tested. In the 0.87-m(3) tank, jet diameters of 0.016, 0.022, and 0.041 m (0.62, 0.87, and 1.61 in.) were used. In the 95-m(3) tank, jet diameters of 0.035 and 0.049 m (1.38 and 1.93 in.) were used. One-directional and two-directional jets were tested in both tanks. Mixing times for each tank were correlated with the jet Reynolds number and for the two tank sizes using the recirculation time for the developed jet. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Hylton, TD (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM hyltontd@ornl.gov NR 10 TC 12 Z9 14 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0888-5885 J9 IND ENG CHEM RES JI Ind. Eng. Chem. Res. PD APR PY 1998 VL 37 IS 4 BP 1478 EP 1482 DI 10.1021/ie970118x PG 5 WC Engineering, Chemical SC Engineering GA ZH370 UT WOS:000073101700037 ER PT J AU Guibas, LJ Halperin, D Hirukawa, H Latombe, JC Wilson, RH AF Guibas, LJ Halperin, D Hirukawa, H Latombe, JC Wilson, RH TI Polyhedral assembly partitioning using maximally covered cells in arrangements of convex polytopes SO INTERNATIONAL JOURNAL OF COMPUTATIONAL GEOMETRY & APPLICATIONS LA English DT Article; Proceedings Paper CT Workshop on Computational Geometry Software CY JAN 18-20, 1995 CL UNIV MINNESOTA, CTR GEOMETRY, MINNEAPOLIS, MN HO UNIV MINNESOTA, CTR GEOMETRY DE assembly planning; assembly partitioning; arrangements of polytopes; linear programming ID OBJECTS AB We study the following problem: Given a collection A of polyhedral parts in 3D, determine whether there exists a subset S of the parts that can be moved as a rigid body by infinitesimal translation and rotation, without colliding with the rest of the parts, A \ S. A negative result implies that the object whose constituent parts are the collection A cannot be taken apart with two hands. A positive result, together with the list of movable parts in S and a direction of motion for S, can be used by an assembly sequence planner (it does not, however, give the complete specification of an assembly operation). This problem can be transformed into that of traversing an arrangement of convex polytopes in the space of directions of rigid motions. We identify a special type of cells in that arrangement, which we call the maximally covered cells, and we show that it suffices for the problem at hand to consider a representative point in each of these special cells rather than to compute the entire arrangement. Using this observation, we devise an algorithm which is complete (in the sense that it is guaranteed to find a solution if one exists), simple, and improves significantly over the best previously known solutions. We describe an implementation of our algorithm and report experimental results obtained with this implementation. C1 Stanford Univ, Dept Comp Sci, Robot Lab, Stanford, CA 94305 USA. Tel Aviv Univ, Dept Comp Sci, IL-69978 Tel Aviv, Israel. Minist Int Trade & Ind, Agcy Ind Sci & Technol, Electrotech Lab, Tsukuba, Ibaraki 305, Japan. Sandia Natl Labs, Intelligent Syst & Robot Ctr, Albuquerque, NM 87185 USA. RP Stanford Univ, Dept Comp Sci, Robot Lab, Stanford, CA 94305 USA. RI Hirukawa, Hirohisa/B-4209-2017 OI Hirukawa, Hirohisa/0000-0001-5779-011X NR 23 TC 7 Z9 7 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0218-1959 EI 1793-6357 J9 INT J COMPUT GEOM AP JI Int. J. Comput. Geom. Appl. PD APR PY 1998 VL 8 IS 2 BP 179 EP 199 DI 10.1142/S0218195998000102 PG 21 WC Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA ZH134 UT WOS:000073076200004 ER PT J AU Mucke, EP AF Mucke, EP TI A robust implementation for three-dimensional delaunay triangulations SO INTERNATIONAL JOURNAL OF COMPUTATIONAL GEOMETRY & APPLICATIONS LA English DT Article; Proceedings Paper CT Workshop on Computational Geometry Software CY JAN 18-20, 1995 CL UNIV MINNESOTA, CTR GEOMETRY, MINNEAPOLIS, MINNESOTA HO UNIV MINNESOTA, CTR GEOMETRY DE three-dimensional Delaunay triangulation; robustness; randomization; incremental flip algorithm; point location; symbolic perturbation; exact arithmetic; implementation ID COMPUTING DIRICHLET TESSELLATIONS; VORONOI DIAGRAMS; REGULAR TRIANGULATIONS; 3 DIMENSIONS; MANIPULATION; SUBDIVISIONS; PRIMITIVES; ALGORITHM; MESH AB This paper presents an implementation for Delaunay triangulations of three-dimensional point sets. The code uses a variant of the randomized incremental flip algorithm and employs symbolic perturbation to achieve robustness. The algorithm's theoretical time complexity is quadratic in n, the number of input points, and this is optimal in the worst case. However, empirical running times are proportional to the number of triangles in the final triangulation, which is typically linear in n. Even though the symbolic perturbation scheme relies on exact arithmetic, the resulting code is efficient in practice. This is due to a careful implementation of the geometric primitives and the arithmetic module. The source code is available on the Internet. C1 Univ Calif Los Alamos Natl Lab, Comp Res & Applicat Grp, Los Alamos, NM 87545 USA. RP Mucke, EP (reprint author), ANSYS Inc, Canonsburg, PA 15317 USA. EM epm@ansys.com NR 46 TC 14 Z9 14 U1 0 U2 4 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0218-1959 J9 INT J COMPUT GEOM AP JI Int. J. Comput. Geom. Appl. PD APR PY 1998 VL 8 IS 2 BP 255 EP 276 DI 10.1142/S0218195998000138 PG 22 WC Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA ZH134 UT WOS:000073076200007 ER PT J AU Juric, D Tryggvason, G AF Juric, D Tryggvason, G TI Computations of boiling flows SO INTERNATIONAL JOURNAL OF MULTIPHASE FLOW LA English DT Article DE front tracking; phase change; boiling; film boiling; interface ID FRONT-TRACKING METHOD; BUBBLE GROWTH; LIQUID; VAPOR AB A numerical method to simulate liquid-vapor phase change is presented. The method is based on the so-called single field formulation where one set of equations for conservation of mass, momentum and energy are written for the entire flow field. Interfacial source terms for surface tension, interphase mass transfer and latent heat are added as delta functions that are non-zero only at the phase boundary. The equations are discretized by a finite difference method on a regular grid and the phase boundary is explicitly tracked by a moving front. A comparison of numerical results to the exact solution of a one-dimensional test problem shows excellent agreement. The method is applied to film boiling, where vapor bubbles are generated from a thin film next to a hot wall. Although the film boiling simulations presented here are two-dimensional, the resulting heat transfer rate and wall temperatures are found to be in good agreement with experimental observations. (C) 1998 Published by Elsevier Science Ltd. All rights reserved. C1 Univ Calif Los Alamos Natl Lab, Grp T3, Los Alamos, NM 87545 USA. Univ Michigan, Dept Mech Engn & Appl Mech, Ann Arbor, MI 48109 USA. RP Juric, D (reprint author), Univ Calif Los Alamos Natl Lab, Grp T3, MS B216, Los Alamos, NM 87545 USA. EM djuric@lanl.gov RI Tryggvason, Gretar/H-4445-2011 OI Tryggvason, Gretar/0000-0002-9884-8901 NR 43 TC 208 Z9 215 U1 4 U2 47 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0301-9322 J9 INT J MULTIPHAS FLOW JI Int. J. Multiph. Flow PD APR PY 1998 VL 24 IS 3 BP 387 EP 410 DI 10.1016/S0301-9322(97)00050-5 PG 24 WC Mechanics SC Mechanics GA ZV796 UT WOS:000074342100002 ER PT J AU Brady, K Tarn, TJ Xi, N Love, L Lloyd, P Burks, B Davis, H AF Brady, K Tarn, TJ Xi, N Love, L Lloyd, P Burks, B Davis, H TI A modular telerobotic architecture for waste retrieval and remediation SO INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH LA English DT Article AB The Oak Ridge National Laboratory (ORNL) has developed and deployed a telerobotic approach for the remote retrieval of hazardous and radioactive wastes from underground storage tanks. The telerobotic system, built by Spar Aerospace Ltd., is capable of dislodging and removing sludge and gravel-like wastes without endangering the human operators through direct contact with the environment. Working in partnership with Washington University, ORNL is implementing an event-based planner/Function-Based Sharing Controller (FBSC) as an integral part of their overall telerobotic architecture. These aspects of the system enable the seamless union of the human operator and an autonomous controller in such a way as to emphasize safety without lass of performance. The cooperation between ORNL, Spar, and Washington University requires an open and modular control software architecture to enable the parallel development of various components of the system. ControlShell has been used as the underlying software architecture to help meet these criteria of generality and modularity. C1 MIT, Lincoln Lab, Lexington, MA 02173 USA. Washington Univ, Dept Syst Sci & Math, St Louis, MO 63130 USA. Michigan State Univ, Dept Elect Engn, E Lansing, MI 48824 USA. Oak Ridge Natl Lab, Robot & Proc Syst Div, Oak Ridge, TN 37831 USA. RP MIT, Lincoln Lab, S20421, Lexington, MA 02173 USA. NR 10 TC 4 Z9 4 U1 0 U2 0 PU SAGE PUBLICATIONS LTD PI LONDON PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND SN 0278-3649 EI 1741-3176 J9 INT J ROBOT RES JI Int. J. Robot. Res. PD APR PY 1998 VL 17 IS 4 BP 450 EP 460 DI 10.1177/027836499801700409 PG 11 WC Robotics SC Robotics GA ZR126 UT WOS:000073939000009 ER PT J AU Amad, MH Houk, RS AF Amad, MH Houk, RS TI A secondary discharge intensifies optical emission from a Mach disk extracted from an inductively coupled plasma SO JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY LA English DT Article DE inductively coupled plasma; secondary discharge; Mach disk; supersonic jet; echelle spectrometer; charge-coupled-device detectors; atomic emission spectrometry; inductively coupled plasma mass spectrometry ID MASS-SPECTROMETRY; ELECTRON-TEMPERATURE; OPERATING PARAMETERS; ATOMIC SPECTROMETRY; ANALYTE SIGNALS; TANDEM SOURCE; ICP-OES; ELEMENTS; DESIGN AB The axial channel of a conventional argon inductively coupled plasma (ICP) is extracted through a circular orifice into an evacuated quartz chamber, Emission from the Mach disk region is focused on the entrance slit of an echelle spectrometer equipped with tao segmented-array charge-coupled-device detectors, The background pressure in the extraction chamber is 1000 Pa (7.5 torr), At this pressure two barrel shocks and Mach disks are visible, Deliberate use of a mild secondary discharge between the plasma and the sampler enhances emission from the Mach disk for a variety of lines from typical analytes (Ca, Sr, Mg and Mn) by factors of 11 to 25. Detection limits are in the range 0.1-2 mu g l(-1). Sodium chloride at concentrations up to 10000 mg l(-1) induces only a modest loss (0-6%) of intensity for ion lines, in contrast to the much more severe matrix effects seen in ICP mass spectrometry. C1 Iowa State Univ Sci & Technol, Ames Lab, Dept Chem, US Dept Energy, Ames, IA 50011 USA. RP Amad, MH (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Dept Chem, US Dept Energy, Ames, IA 50011 USA. NR 34 TC 0 Z9 0 U1 0 U2 1 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON ROAD, CAMBRIDGE CB4 4WF, CAMBS, ENGLAND SN 0267-9477 J9 J ANAL ATOM SPECTROM JI J. Anal. At. Spectrom. PD APR PY 1998 VL 13 IS 4 BP 223 EP 228 DI 10.1039/a704272h PG 6 WC Chemistry, Analytical; Spectroscopy SC Chemistry; Spectroscopy GA ZG823 UT WOS:000073043500001 ER PT J AU Agamalian, M Christen, DK Drews, AR Glinka, CJ Matsuoka, H Wignall, GD AF Agamalian, M Christen, DK Drews, AR Glinka, CJ Matsuoka, H Wignall, GD TI Surface-induced parasitic scattering in Bonse-Hart double-crystal diffractometers SO JOURNAL OF APPLIED CRYSTALLOGRAPHY LA English DT Article ID SMALL-ANGLE SCATTERING; X-RAY-SCATTERING; CAMERA AB Bonse-Hart double-crystal diffractometers (DCD) with multibounce channel-cut crystals show rocking curves which depart dramatically in their wings from dynamical diffraction theory. This intrinsic background is many orders of magnitude higher than the predictions of dynamical diffraction theory. This effect has been studied at the ultra-small-angle neutron scattering (USANS) facility at Oak Ridge National Laboratory by the measurement of rocking curves from different volume elements of a thick single-bounce Si(111) perfect crystal and from triple-bounce channel-cut Si(111) crystals. Analysis of these data, together with the rocking curves from an X-ray Bonse-Hart DCD, allows it to be established that the rocking curve of the multibounce channel-cut crystals contains parasitic scattering generated at the surface of the crystals. The intensity of this component can be reduced by very deep etching of the crystal surface. Using this technique, the signal-to-noise ratio of the Bonse-Hart DCD at the ORNL USANS facility has been improved by one order of magnitude to similar to 5 X 10(5) [I(0)/I(theta = 10 ")]. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. Kyoto Univ, Dept Polymer Chem, Kyoto 60601, Japan. RP Agamalian, M (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. OI Agamalian, Michael/0000-0002-9112-2534 NR 18 TC 33 Z9 34 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0021-8898 J9 J APPL CRYSTALLOGR JI J. Appl. Crystallogr. PD APR 1 PY 1998 VL 31 BP 235 EP 240 DI 10.1107/S0021889897014581 PN 2 PG 6 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA ZW506 UT WOS:000074417800016 ER PT J AU Bernstein, HJ Bernstein, FC Bourne, PE AF Bernstein, HJ Bernstein, FC Bourne, PE TI CIF applications. VIII. pdb2cif: translating PDB entries into mmCIF format SO JOURNAL OF APPLIED CRYSTALLOGRAPHY LA English DT Article ID STAR FILE AB pdb2cif is a new version of an awk script originally written by P. E. Bourne in 1993 to translate from the 1992 Protein Data Bank (PDB) format to the then-emerging macromolecular Crystallographic Information File (mmCIF) definition. This new version of pdb2cif translates from all current PDB formats, including the 1992 PDB format and the 1996 PDB Atomic Coordinate Entry Format, Version 2.0, to the 1997 mmCIF format as defined in the mmCIF dictionary 1.0.00. The program is provided as an m4 script from which both perl and awk versions can be produced. The program identifies mmCIF entities implicitly by sequence homology among PDB SEQRES records. With minor additions to the dictionary, the resultant mmCIF data-sets are substantially compliant with the mmCIF 1.0.00 dictionary. C1 Bernstein & Sons, Bellport, NY 11713 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. San Diego Supercomp Ctr, San Diego, CA 92186 USA. Univ Calif San Diego, Dept Pharmacol, La Jolla, CA 92093 USA. RP Bernstein, HJ (reprint author), Bernstein & Sons, 5 Brewster Lane, Bellport, NY 11713 USA. EM yaya@bernstein-plus-sons.com RI Bourne, Philip/C-2073-2008 NR 17 TC 6 Z9 6 U1 0 U2 0 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0021-8898 J9 J APPL CRYSTALLOGR JI J. Appl. Crystallogr. PD APR 1 PY 1998 VL 31 BP 282 EP 295 DI 10.1107/S0021889897007309 PN 2 PG 14 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA ZW506 UT WOS:000074417800024 ER PT J AU Darovsky, A Coppens, P AF Darovsky, A Coppens, P TI A device for low-temperature crystal reorientation in data collection with the oscillation method SO JOURNAL OF APPLIED CRYSTALLOGRAPHY LA English DT Article ID DIFFRACTOMETER AB A cold finger attached to the second refrigeration stage of a DE-201 Displex closed-cycle helium refrigerator has been equipped with a miniature DC motor. The device allows reorientation of the crystal at low temperature, without remounting or warming to ambient temperature. The axis around which the crystal is rotated is inclined by 45 degrees to the cryostat axis, which gives a 90 degrees change in orientation of the crystal upon 180 degrees rotation. C1 SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA. Brookhaven Natl Lab, Natl Synchrotron Light Source Dept, SUNY Beamline X3, Upton, NY 11973 USA. RP Darovsky, A (reprint author), SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA. NR 6 TC 2 Z9 2 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0021-8898 J9 J APPL CRYSTALLOGR JI J. Appl. Crystallogr. PD APR 1 PY 1998 VL 31 BP 296 EP 298 DI 10.1107/S0021889897009199 PN 2 PG 3 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA ZW506 UT WOS:000074417800025 ER PT J AU Jarnik, M Simon, MN Steven, AC AF Jarnik, M Simon, MN Steven, AC TI Cornified cell envelope assembly: a model based on electron microscopic determinations of thickness and projected density SO JOURNAL OF CELL SCIENCE LA English DT Article DE terminal differentiation; cornified cell envelope; keratinocyte; covalent cross-linking; transglutaminase; loricrin; electron microscopy ID HUMAN EPIDERMAL-KERATINOCYTES; PROLINE-RICH PROTEIN-1; CROSS-LINKED ENVELOPE; EXPRESSION PATTERNS; PSORIATIC EPIDERMIS; LORICRIN; TRANSGLUTAMINASE; INVOLUCRIN; DIFFERENTIATION; IDENTIFICATION AB In stratifying squamous epithelia, the cornified cell envelope (CE), a peripheral layer of crosslinked protein, is assembled sequentially from precursor proteins initially dispersed in the cytoplasm. Its major component is loricrin (37 kDa in mouse), which contributes from approx. 60% to >80% of the protein mass in different tissues. Despite its importance to the mechanical resilience and impenetrability of these tissues, detailed information has not been obtained on CE structure, even on such basic properties as its thickness or uniformity across a given CE or from tissue to tissue. To address this issue, we have studied CEs isolated from three murine epithelia, namely epidermis, forestomach and footpad, by electron microscopy of metal-shadowed specimens and scanning transmission electron microscopy (STEM) of unstained specimens. The former data reveal that the cytoplasmic surface is smoothly textured whereas the extracellular surface is corrugated, and that the average thickness is 15.3+/-1.2 nm, and strikingly uniform. Measurements of mass-per-unit-area from the STEM images yielded values of approx, 7.0+/-0.8 kDa/nm(2), which were remarkably consistent over all three tissues. These data imply that the mature CE has a uniquely defined thickness. To explain its uniformity, we postulate that loricrin forms a molecular monolayer, not a variable number of multiple layers. In this scenario, the packing density is one loricrin monomer per 7 nm(2), and loricrin should have an elongated shape, 2.5-3.0 nm wide by approx. 11 nm long. Moreover, we anticipate that any inter-tissue variations in the mechanical properties of CEs should depend more on protein composition and cross-linking pattern than on the thickness of the protein layer deposited. C1 NIAMSD, Struct Biol Lab, NIH, Bethesda, MD 20892 USA. Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Steven, AC (reprint author), NIAMSD, Struct Biol Lab, NIH, Bldg 6,Room B2-34,MSC 2717, Bethesda, MD 20892 USA. EM Alasdair_Steven@nih.gov FU NCRR NIH HHS [P41-RR01777] NR 54 TC 43 Z9 43 U1 0 U2 1 PU COMPANY OF BIOLOGISTS LTD PI CAMBRIDGE PA BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE, CAMBS, ENGLAND CB4 4DL SN 0021-9533 J9 J CELL SCI JI J. Cell Sci. PD APR PY 1998 VL 111 BP 1051 EP 1060 PN 8 PG 10 WC Cell Biology SC Cell Biology GA ZN660 UT WOS:000073668900003 PM 9512501 ER PT J AU Cobo, JM Garcia-Canero, R Valdez, JG Barrasso, AM Sailer, BL Crissman, HA AF Cobo, JM Garcia-Canero, R Valdez, JG Barrasso, AM Sailer, BL Crissman, HA TI Attenuation of apoptotic DNA fragmentation by amiloride SO JOURNAL OF CELLULAR PHYSIOLOGY LA English DT Article ID INTERNUCLEOSOMAL FRAGMENTATION; PROTEASE INHIBITORS; CLEAVAGE; CELLS; ENDONUCLEASE; TRANSPORT; DEATH AB Amiloride is a K+-sparing diuretic that effectively inihibits the Na+/H+ transporter in the plasma membrane of most mammalian cells. We have examined the effects of amiloride on the progression of apoptosis in HL-60 cells induced by camptothecin (CAM), cycloheximide (CHX), and 20 Cy gamma irradiation. Spectrofluoronletric measurements on cell populations showed an inhibition of Na+/H+ transporter activity and a corresponding decrease in intracellular pH following treatment with amiloride alone, or in combination with the apoptosis-inducing agents. Flow cytometric cell cycle analysis, in combination with DNA strand break analysis, indicated that amiloride diminished endonuclease-mediated degradation of nuclear chromatin 3 h following treatment with CAM or CHX, and prevented degradation for 3 h following gamma radiation treatment. Apoptosis-associated DNA degradation was significantly greater for all three agents in the absence of amiloride. Protection from radiation-induced apoptosis was transient, since apoptotic subpopulations were observed, but still at a decreased level, 5 h following irradiation. Amiloride was as effective as zinc, an inhibitor of Ca2+/Mg2+-dependent endonucleases, in reducing or delaying the onset of endonuclease activity. Data presented show that effects of amiloride on membrane Na+/H+ transporter activity and intracellular pH can potentially affect apoptotic signaling cascades, leading to a retardation in the rate of progression to an apoptotic cell death. Results also point to the involvement of intracellular pH and Ca2+ in the regulation of apoptotic endonuclease activity, and the need for a functional Na+/H+ exchanger for the induction of apoptosis. (C) 1998 Wiley-Liss, Inc. C1 Univ Alcala de Henares, Dept Nutr & Bromatol, Madrid, Spain. Clin Puerto Hierro, Dept Expt Biochem, Madrid, Spain. Univ Calif Los Alamos Natl Lab, Div Life Sci, Los Alamos, NM 87545 USA. RP Crissman, HA (reprint author), Univ Calif Los Alamos Natl Lab, Div Life Sci, LS-4 M888, Los Alamos, NM 87545 USA. EM crissman@telomere.lanl.gov FU NCRR NIH HHS [R01 RR06758, R01 RR07855, P41-RR01315] NR 20 TC 17 Z9 17 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158-0012 USA SN 0021-9541 J9 J CELL PHYSIOL JI J. Cell. Physiol. PD APR PY 1998 VL 175 IS 1 BP 59 EP 67 DI 10.1002/(SICI)1097-4652(199804)175:1<59::AID-JCP7>3.0.CO;2-B PG 9 WC Cell Biology; Physiology SC Cell Biology; Physiology GA YZ345 UT WOS:000072245100007 PM 9491781 ER PT J AU Poirier, B AF Poirier, B TI Quantum reactive scattering for three-body systems via optimized preconditioning, as applied to the O+HCl reaction SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID DISCRETE VARIABLE REPRESENTATION; CUMULATIVE REACTION PROBABILITY; NONSYMMETRIC LINEAR-SYSTEMS; GREEN-FUNCTION; DYNAMICS AB The evaluation of quantum scattering quantities far three-body systems is explored in conjunction with the optimal separable basis methodology, which is utilized in two different ways. First, numerical results are obtained for the zero total angular momentum case using a three-dimensional discrete variable Hamiltonian with absorbing boundary conditions and optimized preconditioning. The J not equal 0 results are then estimated using helicity-conserving and J-shifting approximations, after minimizing the coriolis coupling via another application of the optimal basis method. an "effective potential" interpretation of the helicity-conserving approximation is employed, which obviates the requirement of a K-varying associated Legendre basis for the angular coordinate. This treatment also leads to an improved version of the J-shifting method that automatically incorporates centrifugal distortion and other effects. Fixed-energy cumulative reaction probabilities and thermal rate constants are presented for the O + HCl --> OH + Cl reactive scattering system. (C) 1998 American Institute of Physics. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Poirier, B (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 38 TC 59 Z9 61 U1 0 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD APR 1 PY 1998 VL 108 IS 13 BP 5216 EP 5224 DI 10.1063/1.475958 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA ZD913 UT WOS:000072738000012 ER EF