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  • Wiley-Blackwell  (3)
  • 2015-2019  (1)
  • 1955-1959  (2)
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  • Wiley-Blackwell  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 293 (1958), S. 326-326 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 292 (1957), S. 311-324 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Einwirkung von Wasserdampf tritt oberhalb von 1300°C eine erhöhte Flüchtigkeit von ZnO auf. Der Gewichtsverlust des Zinkoxyds in Wasserdampfatmosphäre ist eine lineare Funktion des Wasserdampfpartialdrucks. Folgende Reaktionsgleichung wird aufgestellt: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm [ZnO] + (H_2 O) \rightleftharpoons (Zn(OH_2)).} $$\end{document} Gleichgewichtskonstanten K1300 = 3,003 · 10-4; K1350 = 8,187 · 10-4. Reaktionsenthalpie 102,2 kcal/Mol. Hydratisierungswärme des gasförmigen Oxyds mit Wasserdampf -15,0 kcal/Mol. Sublimationswärme des Zinkhydroxyds ∼ 115 kcal/Mol; Sublimationswärme des Zinkoxyds 117,2 kcal/Mol. Reaktionsentropie für die heterogene Reaktion aus festem Zinkoxyd und Wasserdampf 48,83 Cl; Reaktionsentropie der homogenen Reaktion aus gasförmigem Zinkoxyd und Wasserdampf -11,71 Cl. Die Ergebnisse und der Reaktionsmechanismus werden diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2017-05-23
    Description: Continental collision zones are usually associated with large-scale strike-slip shear zones. In most cases these shear zones are complex and consist of multiple strands, varying in width, length, and total displacement. Here we present 2-D numerical models to simulate the formation of such shear zones at different depth levels within the crust, under either brittle (frictional/plastic) or ductile conditions. Localization of shear zones is initiated by a material contrast (heterogeneity) of the material parameters. We systematically test the rate of strain-weakening in brittle and in ductile regimes to understand its influence on the development of shear zone networks. Our simulations suggest that the development of antithetic faults in a brittle shear zone system is closely linked to a decrease in the angle of friction during deformation. In general, variation of the strain-weakening also has a significant influence on ductile shear zones. Numerical results show that the geometry and thickness of the localized high strain zone are especially affected by weakening mechanisms during deformation. Furthermore, the interconnection and interaction of the shear strands lead to a more complex kinematic pattern, which lead to a local change in the maximum principal stress axis. These interaction of shear strands may explain the occurrence of shear related structures (e.g. folds) or differing characteristics of shear zones, such as the thickness of shear zones or the orientation of the faults to the stress field, which are consistent with field observations.
    Electronic ISSN: 1525-2027
    Topics: Chemistry and Pharmacology , Geosciences , Physics
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