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  • 1995-1999  (2)
  • 1990-1994  (1)
  • 1935-1939
  • 67.40.Vs  (1)
  • Cat diseases  (1)
  • Vs  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Neurological disease and encephalitis in cats experimentally infected with Borna disease virus (1997)
    Springer
    Acta neuropathologica 93 (1997), S. 391-401 
    Details
    ISSN: 1432-0533
    Keywords: Key words Borna disease virus ; Cat diseases ; Encephalomyelitis ; Immunopathology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Barrier-bred cats were inoculated intracerebrally with either the rabbit-adapted Borna disease virus (BDV) strain V or a newly isolated feline BDV, obtained from a cat with natural staggering disease (SD). Three out of eight inoculated cats developed neurological signs and non-suppurative encephalitis; all three recovered from the acute stage of disease. Sero-conversion and the development of neutralizing antibodies occurred in all of the virus-inoculated cats. In addition, cats inoculated with feline BDV showed an early peripheral T cell response not present in cats inoculated with BDV strain V, suggesting that the feline virus exerted a more vigorous effect on the immune system. Using immunohistochemistry and a reverse transcriptase-polymerase chain reaction assay, BDV-specific antigen and nucleic acid could be demonstrated in brain samples from each cat with encephalitis, showing that incomplete viral clearance was probably responsible for the maintenance of inflammation. The successful induction of neurological signs and encephalitis in one cat infected with feline BDV, together with the detection of BDV-specific antigen and nucleic acid in the brain, provides strong evidence for the notion that BDV is the etiological agent behind feline SD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010050630
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Energy transfer and phase slip by quantum vortex motion in superfluid4He (1993)
    Springer
    Journal of low temperature physics 93 (1993), S. 1003-1018 
    Details
    ISSN: 1573-7357
    Keywords: 67.40.Hf ; 67.40.Vs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The purpose of the present article is to emphasize the usefulness of the ideas of E. R. Huggins in thinking about vortex motion and phase slip in superfluid4He, and is primarily pedagogical. Several explicit illustrations of vortex motion and phase-slip processes are considered. In addition, it is shown that Huggins's results lead to a generalization and a more complete understanding of the familiar expression E+vs · p for the energy in the rest system of an excitation in the flowing superfluid, as applied to vortex excitations. Here, E is the energy and p is the momentum of the excitation in the moving system, and vs is the superfluid velocity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692045
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Studies of the critical velocity of superfluid4he in a 2 μm by 2 μm aperture in a thin foil at various frequencies (1995)
    Springer
    Journal of low temperature physics 101 (1995), S. 743-748 
    Details
    ISSN: 1573-7357
    Keywords: 67.40.Hf ; Vs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Measurements of the critical velocity behavior of oscillatory superfluid4He flow through a 2 μm by 2 μm square aperture in a 0.1 μm thick titanium foil are being made at temperatures between 0.36 K and 2.1 K and at pressures of less than 0.4 bar at various frequencies between 50 Hz and 1000 Hz. The purpose of this work is to study a micron-size aperture for possible frequency-dependent deviations from the critical velocity behavior seen in submicron-size apertures. Preliminary results show a nearly linear decrease of critical velocity with increasing temperature that is similar to the temperature dependences seen in smaller apertures and that is approximately independent of frequency. However, at frequencies above 500 Hz, a region appears at the lowest temperatures in which supercritical behavior is dominated by large energy-loss events requiring a number of half-cycles for completion, a region that extends up to 1.1 K at 970 Hz.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00753384
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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