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  • Wiley-Blackwell  (17)
  • Wiley  (10)
  • American Institute of Physics (AIP)  (7)
  • International Union of Crystallography  (6)
  • International Union of Crystallography (IUCr)  (5)
  • Periodicals Archive Online (PAO)  (3)
  • Springer Nature  (2)
  • Molecular Diversity Preservation International
  • 1985-1989  (50)
  • 1987  (50)
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Publisher
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  • 1985-1989  (50)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Reduktive Arylierung von Vinyl-trifluoromethansulfonaten durch Friedel-Crafts-Reaktion (1987)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 1255-1256 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reductive Arylation of Vinyl Trifluromethanesulfonates by Friedel-Crafts ReactionThe reaction of vinyl triflates 1 with benzene and toluene in the presence of aluminium trichloride gives alkyl-, alkenyl-, and 1,1-diarylalkanes 5, 6, 3, 9 depending on the structure of the substrate used. A mechanism for the reductive arylation is proposed.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19871200724
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  • 2
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    Metagabbro and associated eclogites in the Lubrin area, Nevado-Filabride Complex, Spain (1987)
    Wiley
    Details
    Publication Date: 1987-04-01
    Print ISSN: 0263-4929
    Electronic ISSN: 1525-1314
    Topics: Geosciences
    Published by Wiley
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    Drift-diffusion model for absorption and resorption currents in polymers (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 4571-4578 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Considering the lack of explanations for absorption and resorption currents in polymers, we propose to reformulate the latest and most comprehensive model based on surface ohmic conduction. This model, carried out by numerical simulation, contained oversimplifications. We also analyze the diffusion of carriers from the electrode edge. Finally, and in view of the negative results obtained by both models, we propose a new model based on a mechanism of drift diffusion which allows us to explain the characteristics of absorption and resorption currents in polymers. The simulation carried out for the three models is very precise and employs the integral equation method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338390
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  • 4
    Electronic Resource
    Electronic Resource
    Low-temperature plasma anodization of tantalum silicides (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 2656-2662 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The low-temperature plasma anodization of cosputtered Ta silicide has been studied. The anodization parameters, oxide growth rate, electric field, and faradic efficiency showed a strong dependence on the silicide formation (with or without annealing). Rutherford backscattering techniques were employed to characterize the oxide films and it was found that the plasma oxides grown on as-deposited silicide are of uniform composition in the oxide bulk, but the near-surface region shows a slight Si oxide enrichment, and, thus, a Ta oxide depletion. On the contrary, for annealed (950 °C) silicides, when the hexagonal Si-enriched TaSi2 phase is formed, a high-surface enrichment in Ta oxide is observed in the plasma grown oxides. The insulating properties of the oxide films as determined by capacitance, electrical conductivity, and dielectric strength measurements also depend on the silicide formation, and these properties were correlated to the cation depth distributions in the oxide mixtures. A spectacular difference in the dielectric constant has been found between oxide formed on an as-deposited layer (∼12) and on an annealed one (∼6). This is a consequence of continuous (although nonconstant) cation's mixture in the first case and layered structure in the second.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337896
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  • 5
    Electronic Resource
    Electronic Resource
    Electrical and photovoltaic properties of indium-tin-oxide/p-InSe/Au solar cells (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 1477-1483 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Conditions for efficiency improvement and optimization in indium-tin-oxide/p-indium-selenide solar cells are discussed in this paper. This aim is achieved by using low-resistivity p-indium-selenide and by incorporating a back-surface-field contact. This contact is insured by a p-indium selenide/gold barrier whose rectifying behavior is explained through the complex impurity structure of p-indium-selenide. Electrical and photovoltaic properties of the cells are also reported. The efficiency parameters under AM1 simulated conditions have been improved up to 32 mA/cm2 for the short-circuit current density, 0.58 V for the open-circuit voltage, and 0.63 for the filling factor. As a result, solar efficiencies larger than 10% in annealed cells and 8% in unannealed ones have been attained. The limitations of these devices are discussed by investigating the dependence of electrical and efficiency parameters in function of photon flux and temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339627
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  • 6
    Electronic Resource
    Electronic Resource
    Magnetic structure of α-FeC2O4⋅2D2O (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 3420-3422 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Long-range spin ordering has been studied in the quasi-one-dimensional antiferromagnet α-FeC2O4⋅2D2O by neutron diffraction on a powdered sample above and below TN=11.7 K. Data at 14 K show essentially the room-temperature chemical structure. The space group is C2/c, Z=4, and unit cell dimensions are a=11.700 A(ring), b=5.568 A(ring), and c=9.847 A(ring) with β=128.05°. Magnetic peaks appear at TN and data at 10.5 K show doubling of the unit cell along the b direction, the chain axis. The ordered structure belongs to the magnetic space group P2b2/n with spins parallel to the b axis. Cancellation of certain interchain interactions gives the structure a pronounced two-dimensional character. At T2=9.5 K a discontinuous transition to a second magnetic phase occurs with additional doubling of the unit cell in the a direction. Below T2 the symmetry of the magnetic structure is reduced to triclinic, P2s1¯ with the spins deviating slightly from the b axis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338740
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  • 7
    Electronic Resource
    Electronic Resource
    The NBS triple quadrupole tandem mass spectrometer (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 1702-1705 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A detailed description is provided of a triple quadrupole (QQQ) tandem mass spectrometer (MS/MS) which is kinetically well behaved and can be configured to use either a molecular beam target (type A) or collision chamber (type B) configuration. Its unique capabilities are being used to explore design criteria essential for (i) absolute cross-section measurements, and for (ii) the development of standardized operating conditions for generic, instrument-independent spectral databases for collisionally activated dissociation (CAD).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139371
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  • 8
    Electronic Resource
    Electronic Resource
    Technique for high-pressure electrical conductivity measurement in diamond anvil cells at cryogenic temperatures (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 406-411 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A technique is described for making four-probe electrical conductivity measurements on bulk samples in a diamond anvil cell. The technique has been successfully applied up to 48 GPa and at temperatures below 4.2 K to measure the superconducting transition temperatures (Tc, of Pb, GaP, and Si. A method for analyzing the resistance versus temperature curve in the vicinity of the superconducting transition is also described. This method is applied to determine the pressure dependence of Tc in Si in the region where Tc varies rapidly with pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139296
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  • 9
    Electronic Resource
    Electronic Resource
    Square well orthobaric densities via spinodal decomposition (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 5683-5688 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Orthobaric densities of a square well fluid are obtained by means of a molecular dynamics simulation. Hard wall boundary conditions in one direction and periodic boundary conditions in the other two, added to a mean density close to the critical have two effects: a fast spinodal decomposition that condenses a slab of liquid at the center of the box plus a better sampling of the whole orthobaric curve. Results for the liquid densities compare well with previously obtained data while vapor densities are more sensitive to capillary effects. These finite size effects are analyzed within a lattice gas model, especially those produced by changes in box size and mean density. The method is well suited to predict orthobaric and miscibility curves for binary mixtures once the orthobaric curves of each molecular species have been properly adjusted to experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452546
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  • 10
    Electronic Resource
    Electronic Resource
    Structure of 1-methyl-3-(2-methyl-2-nitrovinyl)indole (1987)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 43 (1987), S. 1613-1615 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270187090887
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