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  • 1
    Electronic Resource
    Electronic Resource
    Study of the ionic transport in polymer electrolyte using positron lifetime distribution method (1996)
    Springer
    Applied physics 63 (1996), S. 267-270 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 78.70Bj ; 6630
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract.  Positron annihilation spectroscopy has been applied to measure the free-volume hole distribution in poly(ether urethane) as a function of temperature. The hole radius distribution determined from orthopositronium lifetime distribution is found to shift to a larger values with increasing temperature. This result, combined with the variation of ionic conductivity, suggests that carrier ions do not migrate naked but are bound to polymer segments through ion-dipole interaction forces, and the ion migration is controlled primarily by segmental motion of the polymer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01567879
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Study of the ionic transport in polymer electrolyte using positron lifetime distribution method (1996)
    Springer
    Applied physics 63 (1996), S. 267-270 
    Details
    ISSN: 1432-0630
    Keywords: 78.70Bj ; 6630
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Positron annihilation spectroscopy has been applied to measure the free-volume hole distribution in poly(ether urethane) as a function of temperature. The hole radius distribution determined from orthopositronium lifetime distribution is found to shift to a larger values with increasing temperature. This result, combined with the variation of ionic conductivity, suggests that carrier ions do not migrate naked but are bound to polymer segments through ion-dipole interaction forces, and the ion migration is controlled primarily by segmental motion of the polymer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01567879
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Cerebellar neuroblastoma (1980)
    Springer
    Acta neuropathologica 50 (1980), S. 139-142 
    Details
    ISSN: 1432-0533
    Keywords: Cerebellar neuroblastoma ; Medulloblastoma ; Synaptic vesicle ; Synapse ; Granule cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A cerebellar tumor of a 4-month-old girl was examined by light and electron microscopy. The presence of numerous synaptic vesicles in many cell processes and the occasional synaptic devices warranted the diagnosis of neuroblastoma of the cerebellum. The nature of the tumor is discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692864
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Morphological investigations on cerebellar “neuroblastoma” group (1982)
    Springer
    Acta neuropathologica 56 (1982), S. 22-28 
    Details
    ISSN: 1432-0533
    Keywords: Cerebellar neuroblastoma ; Desmoplastic medulloblastoma ; Synaptic device ; Granule cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Classic medulloblastoma is a relatively common and distinct clinicopathologic entity consisting of primitive multipotential cells with differentiating capacity to neuroblastic and/or glial cell lines. Desmoplastic medulloblastoma has some features in common with cerebellar neuroblastoma, in which ultrastructural evidence of significant neuroblastic differentiation is extremely rare. We studied three cerebellar tumors with evidence of neuronal differentiation as compared to four classical desmoplastic medulloblastomas. Two of three tumors contained the regions of different degrees resembling desmoplastic medulloblastoma and one consisted of neuroblastic cells exclusively. This spectrum of differentiation suggests a relationship between cerebellar neuroblastoma and medulloblastoma, especially of the desmoplastic type. The nature of cerebellar neuroblastoma and its nosology are briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00691178
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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