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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Veterinary research communications 2 (1978), S. 207-216 
    ISSN: 1573-7446
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Kurzfeassung Bei 1 1/2–2 1/2 jährigen Dorschen in dänischen Küstengewässern kommt ein spezifisches Ulkussyndrom vor, das nur in dem verschmutzten (durch Stadtabwässer, Abwässer aus Zucker- und Zellulosefabriken) Meerwasserbereich festgestellt wurde. Obwohl die Aetiologie der Primärlesionen unbekannt ist (Virus? Stress?), ist die Entwicklung zum Ulkus durch eine bakterielle Infektion bedingt. Dabei warVibrio anguillarum das am häufigsten an lokalen und allgemeinen Infektionen dieser Dorsche beteiligte Bakterium. Vibrio anguillarum kam häufiger in verschmutzten als in nicht verschmutzten Bereichen vor, und die Reaktion auf einen Zufluss von Abwasser aus einer Zuckerfabrik war eine sofortige Zunahme der Menge anVibrio anguillarum in Wasser und Sediment. Es bestand jedoch keine lineare Beziehung zwischen dem Vorkommen vonVibrio anguillarum und der Häufigkeit des Ulkussyndroms. Die beobachtete Heterogeneität bei den an verschiedenen Orten auftretenden Arten vonVibrio anguillarum macht eine intensivere taxonomische und serologische Untersuchung dieser Arten erforderlich. Voraussichtlich könnten das Ulkussyndrom beim Dorsch und das Vorkommen vonVibrio anguillarum (und anderer Vibrios) in Zukunft wichtige Parameter bei überwachungsprogrammen für Meerwasser sein.
    Abstract: Resume Il existe, chez les morues agées de 1 1/2 a 2 1/2 ans vivant dans les eaux côtières danoises, un syndrome spécifique d'ulcère qui n'est signalé que dans les eaux de mer polluées (eaux résiduaires urbaines, effluents d'usines de fabrication de sucre et de cellulose). Bien que l'étiologie des lésions primaires soit inconnue (virus? tension?), on sait que l'évolution en ulcères est liée à une infection bactérienne et leVibrio anguillarum est la bacterie la plus couramment recontrée dans les infections tant locales que generalisées chez les morues. La présence deVibrio anguillarum est plus fréquente dans les zones polluées que dans les zones non polluées et une décharge d'eaux résiduaires provenant d'une fabrique de sucre entrâine une augmentation immédiate du nombre desVibrio anguillarum dans l'eau et les sédiments. Toutefois, il n'y a pas de rapport simple entre la présence deVibrio anguillarum et la fréquence du syndrome d'ulcère. L'hétérogenéité des differentes souches de V. a. trouvées dans differents endroits exige une étude plus approfondie de la taxonomie et de la sérologie de ces souches. Virbio anguillarum (et autres Vibrios) pourraient être, à l'avenir, des paramètres importants dans les programmes de mesure de la pollution chez les recepteurs marins.
    Notes: Abstract One and a half-2 1/2 year old cold living in Danish coastal waters suffer from a specific ulcer syndrome, which occurs only in waters polluted with town sewage or effluents from sugar and cellulose plants. Although the etiology of the primary lesions is unknown (virus?, stress?), the development of ulcers depends upon a bacterial infection.Vibrio anguillarum was the most common bacterium involved in both local and generalized infections in these cod. The prevalence ofVibrio anguillarum was greater in polluted than in unpolluted areas, and the response to an outlet of wastewater from a sugar plant was an immediate increase in the number ofVibrio anguillarum in water and sediment. There was, however, no simple relationship between the prevalence ofVibrio anguillarum and the frequency of the ulcer syndrome. The observed heterogeneity among strains ofVibrio anguillarum from different localities requires a more intensive study of the taxonomy and serology of these strains. In the future the ulcer syndrome in cod and the prevalence ofVibrio anguillarum (and other Vibrios) might be important measurements in programmes for monitoring marine pollution.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 167-168 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The experimental system has been described previously4. Excited states were produced by electron irradiation with a pulse of high energy electrons. Concentrations and kinetics of the transient species were established by optical absorption spectroscopy, and a pulsed dye laser and an optical ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Boundary layer meteorology 17 (1979), S. 353-373 
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A short review of experimental findings is given, followed by a theoretical derivation, based on Taylor's hypothesis, of formulas for lateral coherences. It is assumed that the flow is stationary and homogeneous. Explicit formulas are derived assuming an energy spectrum pertaining to the inertial subrange. Even when the last assumption is not fulfilled, there are only four different types of non-zero velocity coherences. These four coherences correspond to the combinations uu, vv, ww, and uv, where u, v, and w are the longitudinal, the transversal, and the vertical component of the turbulent velocity with respect to the direction of the horizontal mean wind velocity U. In the case of small displacements relative to the scale of turbulence, the coherences are shown to be universal functions of the non-dimensional frequency nD/¦U¦, where n is the frequency and D the lateral displacement. It is shown that these theoretical formulas for spectral coherences are in good agreement with atmospheric data. Finally, the role of the scale of the turbulence is discussed.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 17 (1979), S. 211-215 
    ISSN: 1741-0444
    Keywords: Hot-wire anemometer ; Respiratory-gas-flow measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The performance of a constant-temperature hot-wire anemometer for respiratory-gas-flow measurement has bee investigated. It is shown that the anemometer satisfies common demands with respect to accuracy, response time and to insensitivity to humidity and temperature variations. A calibration method is suggested that permits correction for variation of the flowmeter signal caused by changes of the gas composition. Finally, a procedure for linearisation of the flowmeter signal as a function of flow rate is presented.
    Type of Medium: Electronic Resource
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