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  • 1980-1984  (4)
Collection
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Chemistry of natural compounds 18 (1983), S. 483-484 
    ISSN: 1573-8388
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of engineering physics and thermophysics 45 (1983), S. 1250-1253 
    ISSN: 1573-871X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An approximate method of solving an inverse nonlinear contact heat-transfer problem in a rectangular plate by local one-dimensional difference schemes is examined.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Russian chemical bulletin 33 (1984), S. 2374-2377 
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions 1. When oxidants act on palladium(II) chelates with 1,2-hydroxylaminooximes, oxidative hydrogenation occurs via the N=H bond of the coordinated ligands. 2. It has been shown by EPR that an intermediate in the oxidation is a palladium(II) complex that contains a nitroxyl radical.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 34 (1983), S. 640-646 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: In investigating the strength of polyamide fibres a discrete strength spectrum was observed. The levels were found to correspond to seven discrete values of breaking strength, which were also calculated by mathematical expression of rupture mechanics. They were assigned to submicrocrazes, microcrazes and macrocrazes. With oriented polyamide a correlation between the discrete craze length spectrum determined by small angle x-ray scattering and the discrete strength levels calculated from strength properties was established. The discrete strength and craze length spectra of polymer fibres depend on the discrete structure in longitudinal direction (crystalline and amorphous regions of microfibrils) and cross-sectional direction (microfibrils and fibrils) of the uniaxially oriented polymer as well as on other pecularities of the fibre structure.
    Notes: Statistische Untersuchungen zur Festigkeit von Polyamidfasern zeigten die Existenz eines diskreten Festigkeitsspektrums. Diesen Festigkeitsniveaus entsprechen sieben diskrete Rißlängenwerte, die nach Formeln der Reißmechanik berechnet wurden. Sie lassen sich drei Gruppen zuordnen: den Submikrorissen, Mikrorissen und Makrorissen. Im orientierten Polyamid wurde eine Korrelation zwischen dem mittels Röntgenkleinwinkelstreuung erhaltenen, diskreten Rißlängenspektrum und den aus den Festigkeitseigenschaften berechneten diskreten Festigkeitsniveaus festgestellt. Die diskreten Festigkeits- und Rißlängenspektren in der Polymerfaser hängen mit der diskreten Struktur in Längsrichtung (kristalline und amorphe Bereiche der Mikrofibrille) und Querrichtung (Mikrofibrillen und Fibrillen) des einachsig orientierten Polymers sowie mit anderen Besonderheiten der Faserstruktur zusammen.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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