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  • 1985-1989  (4)
  • 1975-1979
  • 1987  (1)
  • 1986  (3)
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  • 1985-1989  (4)
  • 1975-1979
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    S-Antigen immunoreactivity in human pineal glands and pineal parenchymal tumors. A monoclonal antibody study (1986)
    Springer
    Acta neuropathologica 71 (1986), S. 224-227 
    Details
    ISSN: 1432-0533
    Keywords: S-Antigen ; Monoclonal antibody ; Pineal gland ; Pineocytoma ; Pineoblastoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Using a four-step immunoperoxidase (PAP) method and the monoclonal antibody MAbA9-C6 (MAbA9-C6), which defines an epitope of the retinal S-antigen (S-Ag), we investigated the S-Ag immunoreactivity in human fetal, newborn, infantile and adult pineal glands and in 13 human pineal parenchymal tumors. S-Ag immunoreactivity was demonstrated in a few cells in one of the four fetal and in both infantile glands. Eight of nine adult pineal glands contained isolated MAbA9-C6-positive cells. In two of seven pineocytomas showing neuronal or gangliogliomatous differentiation a few scattered cells displayed S-Ag positivity; two of four pineoblastomas contained small groups of strongly immunoreactive neoplastic cells; two malignant pineocytomas did not demonstrate any S-Ag immunoreactivity. Our results indicate that isolated cells in human pineal gland retain some of the cytochemical characteristics of photoreceptor cells recognized by the MAbA9-C6, and that S-Ag immunoreactivity may be occasionally expressed in pineal parenchymal tumors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688043
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Morphological stability in epitaxy of semiconductors — application to optoelectronic monolithically integrated structures (1986)
    Springer
    Applied physics 41 (1986), S. 243-252 
    Details
    ISSN: 1432-0630
    Keywords: 68.55 ; 81.10 ; 85.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A simple selection rule for epitaxial growth techniques, which is based on morphological stability of the substrate surface is proposed. According to this rule a certain growth technique should be used for preparing a specific device structure of a three-dimensional monolithically integrated optical or electronic circuit. The formulae for morphological stability functions for LPE, MO, VPE, and MBE growth techniques are given. Calculations performed for the GaAs/Al x Ga1−x As material system by using the linear morphological stability theory of Mullins and Sekerka suggest that from the point of view of morphological stability the most suitable growth technique for fabrication of three-dimensional monolithically integrated optical and electronic device structures is the MBE technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616846
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Embryonal central neuroepithelial tumors: Current concepts and future challenges (1987)
    Springer
    Cancer and metastasis reviews 5 (1987), S. 343-365 
    Details
    ISSN: 1573-7233
    Keywords: embryonal tumors ; central nervous system ; growth factors ; indoleamines ; receptors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary While the embryonal central neuroepithelial tumors present complex conceptual and clinical problems, advances in cell type identification by special neurohistological, immunohisto- and immunocytochemical techniques have permitted discrimination of distinct cytomorphogenetic entities. These are based in part on their resemblance to the normal phases of neurocytogenesis. Four of these tumors, medulloepithelioma, desmoplastic infantile ganglioglioma, pineoblastoma and medulloblastoma, are designated as multipotential in light of their capacity to undergo divergent differentiation. Cytomorphogenetic, clinical and experimental data implicate fetal neural cell targets for transformation and raise the possibility that aberrant developmental regulatory mechanisms may contribute to the biologic behavior of these tumors. Growth factors and some neuroregulatory neurotransmitters (such as serotonin) are known to act as modulators of normal neuromorphogenesis. They could play a regulatory role in central neuroepithelial tumors on the hypothesis that the aberrant behavior of the embryonal neoplasms could either be modified by fuctional receptor responses or result from abnormal receptor responses to these substances. Future challenges include 1) the definition of new cytomorphogenetic entities and subgroups of the currently defined forms of embryonal CNS tumors based on the presence of specific growth factors and neuroregulatory neurotransmitters, or their receptors, 2) the characterization of neoplastic receptor responses mediating any modulatory role of the presently known growth factors or neuroregulatory neurotransmitters on the growth and maturation potential of the embryonal central neuroepithelial tumors and 3) the further definition of developmental, stage-specific modulators that might be operative in these tumors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00055377
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Cross sections of fast neutron induced reactions on molybdenum isotopes (1986)
    Springer
    The European physical journal 323 (1986), S. 91-96 
    Details
    ISSN: 1434-601X
    Keywords: 20.25.40 Fq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Cross sections of (n, p), (n, α), and (n, 2n) reactions on molybdenum isotopes have been measured, in the neutron energy range from 13 MeV to 17 MeV, and interpreted in terms of evaporation from the compound nucleus and preequilibrium emission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294558
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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