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  • 1
    Electronic Resource
    Electronic Resource
    NQR on Gallium Single Crystals for Absolute Thermometry at Very Low Temperatures (1999)
    Springer
    Journal of low temperature physics 114 (1999), S. 203-230 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that NMR/NQR-thermometry on Ga single crystals can serve the need of absolute thermometry in a temperature range from below 20 μK to above 1 mK. Thus, the sensitive range includes all phase transition temperatures around 1 mK of solid and fluid 3 He, a necessity for an extension of the 3 He-melting-pressure temperature scale towards lower temperatures. The experiments were performed in magnetic fields of 50 to 200 mT and at temperatures down to 200 μK using single rf-pulses. Special care was taken for the orientation of the magnetic field with respect to crystal orientation which was obtained by in-situ pulsed NMR-experiments. It has been shown that in the investigated parameter range nonlinear effects in NMR due to high spin alignment had no significant influence. In pulsed NMR as well as in specific heat experiments it could be shown that spin-spin interactions are only weak in Ga and do not influence nuclear paramagnetism, at least at temperatures above 100 μK. The advantages of using Ga instead other elements for population difference thermometry are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021810105778
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Synthese und Reaktionen von Steroidspirothiazolidinen (1964)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 23 (1964), S. 149-156 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Gesättigte 3-Ketosteroide reagieren mit Cysteamin (β-Mercaptoäthylamin) zu 3,2′-Spirothiazolidinen, deren Reaktionsverhalten beschrieben wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19640230306
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    Paper (German National Licenses)
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  • 3
    Book
    Book
    Druckebenenübergreifende Grundsatzplanung von Gasverteilungsnetzen /; 127 (2009)
    Aachen :Klinkenberg,
    Details
    Title: Druckebenenübergreifende Grundsatzplanung von Gasverteilungsnetzen /; 127
    Author: Hübner, Michael
    Edition: 1. Aufl.
    Publisher: Aachen :Klinkenberg,
    Year of publication: 2009
    Pages: IX, 108 S. : , graph. Darst.
    Series Statement: Aachener Beiträge zur Energieversorgung 127
    Dissertation note: Zugl.: Aachen, Rheinisch-Westfälische Techn. Hochsch., Diss., 2009
    ISBN: 978-3-934318-26-7
    Type of Medium: Book
    Language: German
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    ZIB Catalog
    Zuse Institute Berlin get availability status
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