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  • 1985-1989  (2)
  • 1970-1974  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 42 (1986), S. 1785-1787 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Neurochemical research 12 (1987), S. 345-349 
    ISSN: 1573-6903
    Keywords: ATP-sulfurylase ; APS-kinase ; liver ; brain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Chromatography of brain and liver 100,000g supernatants over HPLC molecular sieve columns revealed striking differences in the molecular weight distribution of ATP-sulfurylase and APS-kinase of the two tissues, pointing to different enzymic species for both enzymes in brain and liver. This was further substantiated by kinetic characterization of the two enzymes of both tissues. APS-kinase of liver is allosterically activated by ATP, while the brain enzyme is not. ATP-sulfurylase of brain is activated at high, but still physiological concentrations of ATP. Brain ATP-sulfurylase is inhibited by phenylalanine.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 7 (1971), S. 89-99 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On utilise la technique proposee par Mossakovskii et Rybba pour formuler une solution approchee aux problemes de mecanique de rupture ou intervient une symetrie axiale. La procedure est ensuite appliquee a la determination du facteur d'intensite des contraintes dans le cas d'une fissure plane et toroldale soumise a pression interne. On constate que le facteur d'intensite des contraintes passe par un maximum au bord interne de la fissure plane et toroidale, ce qui laisse entendre qu'une telle fissure aura toujours tendance a prendre la forme d'une fissure en forme de disque.
    Notes: Abstract The solution technique of Mossakovskii And Rybka is used to formulate an approximate solution for axisymmetric problems in fracture mechanics. The procedure is then used to determine the stress intensity factor in a flat toroidal crack subjected to internal pressure. The maximum stress intensity factor exists at the inner edge of flat toroidal crack and therefore the crack will always tend to grow into a penny-shaped crack.
    Type of Medium: Electronic Resource
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