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  • 1995-1999  (2)
  • 1935-1939
  • Chemistry  (1)
  • glutathione  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 26 (1995), S. 251-254 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Untersuchung der Spannungs-Dehnungs-Beziehungen von anfänglich anisotropen Metallen unter den Bedingungen proportionaler und nicht proportionaler BelastungFür praktische Berechnungen basiert die Plastizitätstheorie üblicherweise auf der Annahme der Materialisotropie. Handelsübliche metallische Werkstoffe sind jedoch i.a. anisotrop infolge vorhergehender thermischer und/oder mechanischer Vorbehandlungen.Aluminium-, Titan- und Magnesiumlegierungen sind typische strukturanisotrope Werkstoffe. Deren breite Anwendung in vielen ingenieurtechnischen Bereichen erfordert jedoch eine genauere Bestimmung der mechanischen Eigenschaften unter verschiedenen typischen Belastungsbedingungen.In der vorliegenden Arbeit wird eine einfache Theorie für anisotrope Metalle vorgestellt, die auf Experimenten zur elastischplastischen Verformung ursprünglich anisotroper Metalle unter einfacher (proportionaler) Belastung sowie für den Spezialfall einer Belastung entlang eines unstetigen Spannungsweges beruht.
    Notes: In plasticity theories-applied in practical calculations- are usually based on the assumption of materials isotropy.Commercially obtained structural metallic materials however are originally anisotropic due to various kinds of thermal and mechanical treatments.Aluminium, titanium and magnesium alloys are typical anisotropic structural materials. The wide application of these materials in different fields of engineering demands more accurate mechanical behaviour predictions for these alloys under various conditions of loadings.In the aper, a simple theory of plasticity for anisotropic metals is proposed which is based on the results of experimental investigations into elasto-plastic deformation of initially anisotropic aluminium alloys subjected to simple (proportional) loading as well as under loading along stress path with a corner.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of experimental biology and medicine 120 (1995), S. 908-910 
    ISSN: 1573-8221
    Keywords: liver microsomes ; tocopherol ; glutathione
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Tocopherol-enriched liver microsomes are more resistant to lipid peroxidation at an alkaline pH of 8.5 in comparison with microsomes incubated at pH 7.5. An alkaline pH provides conditions for two-electron oxidation of tocopherol, which causes the lipid molecule to revert to the initial state (O2/H exchange). A possible mechanism of inhibition of lipid peroxidation within the physiological range of pH with participation of a glutathione-dependent enzyme is discussed.
    Type of Medium: Electronic Resource
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