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  • 1
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have studied eddy current heating and shielding for conducting materials in a cylindrical geometry, and we have performed numerical calculations as a function of the important parameters. Results are presented in graphical form. Eddy current heating in OFHC copper at low temperatures and means of suppressing it have been studied in a Bitter magnet in a field of 15 T. Results show that it is possible to use conducting materials for experiments in high magnetic fields at temperatures below 1 K.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 88 (1976), S. 255-275 
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The morphological, ultrastructural, biochemical and electro-physiological properties of B104-F, a clonal cell line derived from a nitrosoethylurea-induced neoplasm in a rat, were studied as a function of the growth phase of the culture. Cells in exponentially growing cultures are mononucleate and produce action potentials when stimulated electrically. Stationary phase cultures contain three types of cells: cells of the first type are mononucleate and have long processes containing microfilaments and many parallel microtubules; cells of the second type are mononucleate but contain no microtubules and few microfilaments; and cells of the third type have ultrastructural features typical of multinucleate, striated myotubes. Multinucleate cells generate action potentials with both sodium and calcium components and are depolarized by acetyl-choline. The acetylcholine response is blocked by d-tubocurarine. The specific activity of creatine phosphokinase is nine times higher in stationary phase cultures than in exponentially growing ones while the myokinase specific activity is unchanged. The gamma-aminobutyric acid content of the cells is 3.5- to 26-fold higher in stationary phase than in exponentially growing cultures, depending on the degree of fusion of the culture. The properties of B104-F are discussed in relation to the properties of developing skeletal muscle and of central nervous system cell lines.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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