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  • 1975-1979  (4)
  • 1960-1964  (1)
  • 1
    Electronic Resource
    Electronic Resource
    ZINC INTERFERENCE WITH COPPER, IRON AND MANGANESE IN YOUNG JAPANESE QUAIL (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: TO identify the most sensitive adverse effects of high dietary zinc, day-old Japanese quail (Coturnix coturnix juponica) were fed diets marginally deficient, adequate or slightly elevated in copper with supplements of 15.6–2000 ppm zinc. By 14 days of age, sensitive zinc antagonisms of copper, iron and manganese were evident. The supplemental zinc caused depressed growth, decreased feather pigmentation, mild perosis and anemia; the first three generally being more severe when dietary copper was marginally deficient. The duodenum and liver accumulated zinc in relation to the dietary zinc level. Supplemental zinc caused decreased levels of iron, manganese and copper in the liver. The adequacy of copper intake is important when zinc intake is increased by use of dietary supplements or fortification of foods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1979.tb08488.x
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  • 2
    Electronic Resource
    Electronic Resource
    Scheinbare Viskosität von menschlichem Gesamtblut bei verschiedenen hydrostatischen Drucken. I. Untersuchungen an mit antikoagulierender Substanz versetztem Blut unter Verwendung eines neuen Kapillarviskosimeters (1977)
    Springer
    Colloid & polymer science 255 (1977), S. 513-513 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01536491
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ein transistorisiertes Kugelfall-Viskosimeter zur schnellen Untersuchung von biologischen und technologischen Systemen (1977)
    Springer
    Colloid & polymer science 255 (1977), S. 830-830 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01664607
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The year cycle of Eudiaptomus vulgaris (Schmeil, 1896) (Copepoda, Calanoida) in a small, acid water body during 1973. Development in the natural habitat and relationships between temperature and duration of development stages (1979)
    Springer
    Hydrobiologia 64 (1979), S. 17-36 
    Details
    ISSN: 1573-5117
    Keywords: Eudiaptomus ; year cycle ; sex ratio ; eggs ; spermatophores ; temperature ; development time
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The development of a population of Eudiaptomus vulgaris (Schmeil, 1896) in the Meeuwenven, a shallow acid guanotrofic moorland pool, has been described during one year. The population hibernates as copepodite 5 stages, adults and, to a small extent as naupliar stages N1, N2 and N3 (which could not develop further at low temperatures in autumn). In spring the population development starts at temperatures above 10°C and shows 3 or 4 pulses a year. An attempt has been made to explain seasonal changes in the size of adult males and females and in the sex ratio. In order to establish the duration of the various development stages, the animals have been cultured at different temperatures under illumination with 2000 Lux at a daylength of 14 hours. An adequate quantity of food from the natural habitat was available. Total egg development and total naupliar and copepodite development have been compared with the results of other workers, especially with those from Eckstein (1964), who studied Eudiaptomus vulgaris in the deep Schluchsee. The duration curves do not differ markedly with those of Eckstein and are strongly temperature dependent. The relation between the development times of the various stages with temperature can be generally expressed as parabolic regressions of the type D = a + b1T + b2T2, the C5 and adult stages being the only exception at higher temperatures. Comparison of the relative duration of the stages at different temperatures did show that younger stages can take a larger share of the total development time at lower temperatures, stage N6 being the most temperature-sensitive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00015450
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Prediction of pressure drop in two-phase single-component fluid flow (1962)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 8 (1962), S. 18-25 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Data on pressure drop in two-phase, single-component fluid flow, both with and without heat transfer, are presented in terms of the Lockhart and Martinelli correlation parameters. The fluids used were trichloromonofluoromethane and hydrogen.The results are compared with the correlation curve recommended by Martinelli and Nelson and give frictional pressure drops that are about 40% lower than the curve. The reasons for the deviations are discussed in terms of the effects of friction factors, the existence of metastable equilibrium, accuracy of data and instrumentation, and calculation procedures.It is concluded that the Martinelli and Nelson correlation and a simple momentum pressure drop computation can be superposed to predict roughly the total pressure drop in tubes containing steady state, two-phase, single-component fluid flow with appreciable vaporization.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690080108
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    Paper (German National Licenses)
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