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  • 2000-2004
  • 1980-1984  (2)
  • 1965-1969
  • 1983  (2)
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  • 2000-2004
  • 1980-1984  (2)
  • 1965-1969
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  • 1
    ISSN: 1432-1440
    Keywords: Ehrlich ascites-tumor ; Hypercaloric feeding ; Proliferation kinetics of tumor cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Oral feeding of mice with hypercaloric diets inhibited growth of a hyperdiploid Ehrlich ascites tumor significantly and modified proliferation kinetics of tumor cells if feeding started 7 days before tumor transplantation. Furthermore, the tumor take rate was significantly reduced. The 4 hypercaloric diets contained as main energy sources carbohydrates, or unsaturated fatty acids, or saturated fatty acids, or a mixture of these substrates. Inhibition of tumor growth was not observed if hypercaloric feeding started on the same day the tumor transplantation occurred. Tumor bearing animals lived significantly longer compared to controls if they are on a hypercaloric diet with unsaturated fatty acids as main energy source. Survival was not influenced by the time feeding started. That means that partial prevention of cachexia was the main reason for longer survival. Feeding with a diet poor in proteins led in both experimental sets to a statistically not significant shortening of the median survival time compared to controls.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Heat and mass transfer 17 (1983), S. 115-119 
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Bewegungen von Gasblasen in einem vertikalen Temperaturgradienten werden experimentell untersucht. Die neben der Erdschwere als Bewegungsursache auftretende Grenzflächenkonvektion (Marangonikonvektion) an der Grenzfläche Blase/Medium wird im Lichte der Theorie von Young et al. diskutiert. Die Größe der Marangonizahl im Blaseninnern (N i Ma) bzw. im äußeren Medium (N e Ma) wird als Kriterium für die Anwendbarkeit der Theorie eingeführt. Die Experimente demonstrieren die Anwendbarkeit der Young-Theorie bis zur MarangonizahlN i Ma=10−2 bzw.N e Ma=2.
    Notes: Abstract This is an experimental study on gas bubble motion in a vertical temperature gradient. Surface tension convection (Marangoni convection) superimposing gravity is discussed with respect to the theory of Young et al. as another cause for bubble motion. The Marangoni numbers for the convection inside the bubble (N i Ma) and outside the bubble in the medium (N e Ma) are introduced as criterion for the applicability of the theory. It is shown by the experiments that the Young theory holds up to Marangoni numbersN i Ma=10−2 and Ne Ma=2, respectively.
    Type of Medium: Electronic Resource
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