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  • Articles: DFG German National Licenses  (4)
  • Fractals  (1)
  • PACS. 25.70.-z Low and intermediate energy heavy-ion collisions – 25.75.Gz Particle correlations  (1)
  • Parkinson's disease  (1)
  • hyperthermia  (1)
Source
  • Articles: DFG German National Licenses  (4)
Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biology of the Cell 75 (1992), S. 83-87 
    ISSN: 0248-4900
    Keywords: chondrocytes ; hyperthermia ; mitochondrial activity ; osteoblasts ; proliferation kinetics
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0533
    Keywords: Parkinson's disease ; Ultrastructure ; Catecholomines ; Trans-synaptic degeneration ; Axonal dystrophy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Ultrastructural and biochemical properties of caudate nucleus (CN) biopsies in two patients with advanced Parkinson's disease (PD) were compared with three CN specimens removed during surgery for intracranial tumors. An additional two specimens from neurologically intact patients (59 and 86 years old) were removed during autopsy (performed 3 and 4 h post mortem, respectively) for electron microscopic studies. Dopamine levels in PD were reduced to less than 15% of control values. Both PD patients showed frequent dystrophic neurites and transsynaptic degeneration of neurons and neuritic processes. These changes were not found in CN from the four control individuals. Only a few dystrophic neurites were noticed in one 67-year-old control patient. The development of neuroaxonal dystrophy in CN is consistent with a dying-back process, probably accompanying abnormalities of axonal transport in PD. Transsynaptic degeneration of neurons in CN very likely represents a morphological marker of disease severity. The occurrence of this change may account for the poor clinical response of patients with advanced PD to intracerebral implantation of dopaminergic tissues.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1434-601X
    Keywords: PACS. 25.70.-z Low and intermediate energy heavy-ion collisions – 25.75.Gz Particle correlations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Two-neutron correlation functions are measured in the 40Ar + 197Au reaction at 60 MeV/nucleon to study the space-time characteristics of neutron emitting sources. The source temperatures and velocities are deduced by fitting the single-neutron energy spectra with a three-source model. A comparison of the correlation data with the predictions of the model of moving sources and with the dynamical Landau-Vlasov model suggests the relevance of a multisource description. Particular care has been paid to the influence of the relative source abundance on the shape of the correlation function.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of statistical physics 36 (1984), S. 519-539 
    ISSN: 1572-9613
    Keywords: Fractals ; squig models
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Squig intervals are a class of hierarchically constructed fractals introduced by the author. They can be visualized as the final outcome upon a straight interval of a suitable cascade of local perturbative “eddies” ruled by two processes called decimation and separation. Their theory is summarized and their scope is extended in several new directions, especially by introducing new forms of separation. Squig intervals are generalized in two dimensions, with fractal dimensions ranging from 1.2886 to 1.589. Squig sheets are constructed in three dimensional space with fractal dimensions ranging from 8/3 up. They should prove useful in modeling the fractal surfaces associated with turbulence and related phenomena. Squig intervals are constructed in three dimensions. Nonsymmetric “eddies” and the resulting squigs are tackled. Squig trees and intervals are drawn on unconventional lattices, either in the plane or in a prescribed fractal surface. Peyriére'sM systems are mentioned: their study includes the proof that the informal “renormalization” argument (involving a transfer matrix) is exact for squigs.
    Type of Medium: Electronic Resource
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