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  • 1
    ISSN: 1572-9567
    Keywords: dynamic technique ; high pressure ; high temperature ; lead ; sound speed ; thermophysical properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A dynamic technique, the isobaric expansion experiment (IEX), is used to reach high-temperature and pressure states in liquid lead. A unique technique is described for making sound-speed measurements once a final equilibrium end state is obtained. Data over an extended density range are presented. The sound speed in liquid lead over this range appears to vary linearly with density and has no dependence on temperature within our experimental precision (±7 %).
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-2451
    Keywords: Burns ; Wound infection ; Staphylococcus aureus ; Bacterial virulence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 30Staphylococcus aureus Stämme von drittgradig verbrannten Patienten wurden hinsichtlich ihrer Fähigkeit zur Hämolysingenerierung und ihres Vermögens zur Histaminfreisetzung aus Mastzellen (RPMC) untereinander verglichen. Die bakteriellen Kulturüberstande von 8 Stämmen aus Wundbiopsien zeigten signifikant niedrigere in vitro Aktivitäten als die übrigen Staphylokokken-Kulturüberstände. Bei dem Vergleich der in vitro Aktivitäten der gewaschenen Bakterienzellen ergab sich ein umgekehrtes Verhältnis. Diese Befunde zeigen, daß beiS. aureus Isolaten, welche zum Zeitpunkt einer invasiven Brandwundeninfektion isoliert werden können, die mikrobiellen Pathogenitätsfaktoren an die Bakterienzelle gebunden bleiben.
    Notes: Summary The hemolysin and histamine releasing activity of 30S. aureus strains isolated from third degree burns of heavily burned patients was detected. The culture supernatants (cs) ofStaphylococcus aureus isolated during episodes of invasive burn wound infection displayed significantly lower amounts of hemolysin and histamine releasing activity as compared to cs of bacteria isolated when no sign of septicemia was present. In contrast, when washed bacterial cells were analysed, a reversed ratio could be observed. These data clearly indicate that in strains isolated during invasive burn wound infection pathogenicity factors remain attached to the bacterial surface of the staphylococci investigated.
    Type of Medium: Electronic Resource
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