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  • 1990-1994  (1)
  • 1980-1984  (1)
  • 1965-1969  (1)
  • Chemistry  (3)
  • B chain of oxidized insulin
  • Gastric mucosal aspartic proteinase
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Material
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Year
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  • 1
    Electronic Resource
    Electronic Resource
    Transport of a gas through asymmetric polysulfone membranes with deposited plasma-polymerized thin layer (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 41 (1990), S. 2427-2436 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A plasma-polymerized thin layer was deposited on the top surface of the skin layer of the asymmetric polysulfone (PSF) membrane to plug ultrafine pores passing through it. Trifluoromethane was used as the monomer gas of plasma polymerization. The steady-state permeation rates for oxygen and nitrogen through the asymmetric PSF membranes with the plasma modification were measured to evaluate the permselectivity and permeability. If ultrafine pores passing through the asymmetric membrane can be plugged by the plasma-polymerized thin layer, the separation factor of oxygen relative to nitrogen can be increased with the permeation rate coefficient of oxygen still kept large. This condition was met when the vaporization time of the cast solution during the preparation of an asymmetric membrane ranged from 10 to 120 s and the plasma polymerization time ranged from 15 to 30 min.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1990.070410942
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Viscosity of concentrated styrene solutions of polystyrene (1968)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 12 (1968), S. 9-11 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Viscosities of concentrated solutions of polystyrene of different intrinsic viscosities were measured at varying polymer concentration and temperature. By modifying Martin's equation, an empirical equation correlating the viscosity of the solution as a function of the polymer concentration, the intrinsic viscosity of the polymer, and temperature was obtained.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1968.070120102
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Korrelation zwischen Mössbauer-Isomerieverschiebungen und ESCA-Bindungsenergien (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 483 (1981), S. 75-85 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Correlation between Mössbauer Isomer Shifts and ESCA Binding EnergiesThe correlation between core-electron binding energies and Mössbauer isomer shifts is investigated and discussed for low-spin pentacyanoferrates(II), high-spin iron(III) compounds and high-spin iron(II) halides. The Fe2p3/2 binding energies of the investigated pentacyano ferrates(II) increase with decreasing isomer shifts as a consequence of the increasing π acid strengths of the sixth ligands. In contrast, the electron binding energies in high spin iron(III) compounds and iron(II) halides increase with increasing isomer shifts. This correlation is caused by the σ donor properties and the electronegativity of the ligands.
    Notes: Der Zusammenhang zwischen core-Elektronen-Bindungsenergien und Mössbauer-Isomerieverschiebungen wird für low-spin-Pentacyanoferrate(II), high-spin-Eisen(III)-Verbindungen und high-spin-Eisen(II)-halogenide untersucht und diskutiert. Die Fe2p3/2-Bindungsenergien der untersuchten Pentacyanoferrate(II) nehmen mit Kleiner werdenden Isomerieverschiebungen als Folge zunehmender π-Säurestärken der sechsten Liganden zu. Im Gegensatz dazu wachsen die Bindungsenergien der high-spin-Eisen(III)-Verbindungen und Eisen(II)-Halogenide mit zunehmender Isomerieverschiebung. Ursache sind die σ-Donoreigenschaften und die Elektronegativität der Liganden.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814831210
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    Paper (German National Licenses)
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