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  • 1985-1989  (4)
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Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5465-5468 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We calculate the density of states (DOS) of a two-dimensional electron gas in the presence of an external magnetic field. We take into account the self-consistent screening of the impurity scattering and the Landau level coupling effects. Using realistic parameters, we find qualitative agreement with the existing experiments. Our calculated DOS is broad and fairly featureless with considerable overlap between the Landau levels and is quite different from the well-separated Landau levels derived from the short-range interaction model. This implies that the calculated level broadenings are much larger than that obtained from the short-range model.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1279-8517
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Infection 16 (1988), S. 179-182 
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Prävalenz von Antikörpern gegen Antigene von 15 Legionellen wurde mit ELISA unter Verwendung von ultraschall-behandelten Bakterienantigenen bei 319 gesunden Personen bestimmt, die in Taiyuan, China (Provinz Shanxi) wohnen. Gegen 11 Antigene wurden signifikante Antikörperspiegel gefunden. Wie in früheren Studien fand sich eine Assoziation zwischen Zigarettenrauchen und Seroreaktivität; zwischen Berufstätigkeit oder Geschlecht und Seroreaktivität war hingegen keine Beziehung festzustellen. Bei der Analyse der Antikörperantwort auf spezifische Antigene oder Antigen-“Gruppen” war eine eindeutige Beziehung zum Arbeitsplatz erkennbar. Aus diesen Daten ließ sich eine höhere Expositionsrate gegen Philadelphia-Typ-1-Antigene in der Unterkunft des Bergwerkbüros und einem benachbarten Elektrizitätswerk ableiten; im Shanxi Bergwerk-College und bei Mitarbeitern der Zeitung Shanxi Daily erschien die Exposition gegen Antigene vom Typ E-327F/NY23 erhöht. Die Auffindung der Erregerreservoirs und Bestimmung der Expositionsmechanismen ist weiteren Untersuchungen vorbehalten.
    Notes: Summary Using an ELISA with bacterial sonicate antigens, the prevalence of antibodies to the antigens of 15 legionellae was determined in 319 healthy individuals residing in Taiyuan, China (Shanxi Province). Significant antibody levels were detected to 11 antigens. Confirming earlier studies, an association was noted between cigarette smoking and seroreactivity, however, none was observed between occupation, or sex and seroreactivity. When the response to specific antigens or antigenic “groups” was studied, an association with work site was apparent. These data suggested a higher rate of exposure to Philadelphia 1 type antigens at the Bureau of Mining dormitory and a nearby electric power plant, and to E-327F/NY-23 type antigens at the Shanxi Mining College and Shanxi Daily newspaper. Further studies will define the reservoirs and mechanisms of exposure.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 67 (1987), S. 357-361 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The controversial 2-d, 3-state chiral Potts model is studied using transfer matrix finite size scaling. at Δ=0, we find dq N/dΔ∝N −4/5, whereq is the “wavevector”, Δ the chiral field, andN the strip width (N=4−10). The result is consistent with den Nijs's crossover exponent ϕ=1/6. With surface fields on the infinite free boundaries, exponents associated with bulk magnetizationy H, surface magnetizationy′ H, and surface susceptibility χ are computed vs. Δ; results are similar for $$\hat \Delta$$ ‖ or ⊥ to the infinite direction. Preliminary results are given for the bulk specific heat critical amplitudes, to test the universality of amplitude ratios. The interface wetting line is located for 0≦Δ≦1/4 using simple transfer matrix calculations of surface tensions in the solid-on-solid approximation. Overhangs or bubbles seem relatively unimportant at all temperatures.
    Type of Medium: Electronic Resource
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