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  • 3β-hydroxysteroid dehydrogenase  (1)
  • 75.20.En  (1)
  • 1985-1989  (2)
  • 1960-1964
  • 1920-1924
  • 1989  (2)
Collection
Keywords
Publisher
Years
  • 1985-1989  (2)
  • 1960-1964
  • 1920-1924
Year
  • 1989  (2)
  • 1
    Electronic Resource
    Electronic Resource
    In situ demonstration of the activity of 3β-hydroxysteroid dehydrogenase on steroid hormone secreting cells within the paraaortic lymph nodes of golden hamster (1989)
    Springer
    Cellular and molecular life sciences 45 (1989), S. 750-753 
    Details
    ISSN: 1420-9071
    Keywords: 3β-hydroxysteroid dehydrogenase ; steroid producing cell ; paraaortic lymph node ; golden hamster
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The in situ activity of 3β-hydroxysteroid dehydrogenase was detected in clustered cells which showed steroid-producing morphology, within the capsule of the paraaortic lymph node. In light and electron microscopic studies, the positive reaction products were detected on intracapsular cell clusters. This result indicates that these unique cells may have a steroid secreting function within the lymph nodes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01974577
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Shape effect and quantum size effect on small metal particles (1989)
    Springer
    The European physical journal 11 (1989), S. 327-332 
    Details
    ISSN: 1434-6079
    Keywords: 75.20.En ; 72.15.-V
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The electronic properties of small metallic particles are expressed by the generalized formula that incorporates the effect of particle shape in addition to the quantum size effect in such a way as to connect the Poisson distribution and orthogonal distribution from random matrix theory. The experiments on the static magnetic susceptibility of small magnesium particles recently obtained were analyzed by means of the proposed formula and were well explained assuming the regularity of particle shape. The observation by high resolution electron microscopy suggests that many particles are not rough in shape. This is inconsistent with commonly accepted assumptions made about small metallic particles. “The degree of metallicity” is introduced to characterize the statistics of level spacing fluctuation of small metal particles and this divides the statistics into four typical regions: bulk metal with Fermi-Dirac statistics, small metallic particles with Poisson statistics, small particles with Wigner-Dyson statistics and insulating molecules. The relation of lattice disorder to the shape effect is briefly discussed taking into account the effect of Anderson localization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01438507
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    Paper (German National Licenses)
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