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  • COMMUNICATIONS AND RADAR  (1)
  • Inorganic Chemistry  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Untersuchungen über aromatische Diazoverbindungen, II. Verfahren zur Herstellung Aromatischer Sulfonsäurechloride, Eine Neue Modifikation der Sandmeyerschen Reaktion (1957)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 90 (1957), S. 841-852 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine neue Modifikation der Sandmeyerschen Reaktion beschrieben, die auf dem Ersatz der Diazogruppe durch die Sulfochloridgruppe beruht. Die Reaktion verläuft im allgemeinen nur in Gegenwart von Kupfer(I)-chlorid. Nur die stark negativ substituierten Diazoniumchloride, wie die Dinitrobenzoldiazoniumchloride, reagieren mit Schwefeldioxyd auch bei Abwesenheit eines Katalysators. Diazobenzol- und Diazonaphthalin-sulfonsäuren liefern auch in Gegenwart von Chlorionen an Stelle der Sulfochlorid-sulfonsäuren Disulfonsäuren. Analog verhält sich die Diazoarsanilsäure.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19570900602
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Future DCS objectives in communication network timing and synchronization (1973)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The Defense Communication System will be moving rapidly toward providing switched digital service to it's users within the next ten years. The principal driving force in the transition to a digital system is the requirement for high performance secure voice service. Additionally, the anticipated data requirements in this time frame can be handled most effectively by a digital network. The characteristics of a switched digital network which impose timing and synchronization requirements on the system design are presented. Several alternative approaches to implementing a timing subsystem suitable for a switched digital communications system have been considered. These include pulse stuffing, independent stable clocks, and clock correction techniques. The advantages and disadvantages of each approach are discussed relative to both the strategic and tactical communication system requirements.
    Keywords: COMMUNICATIONS AND RADAR
    Type: NASA. Goddard Space Flight Center Proc. of the 5th Ann. NASA and DOD Precise Time and Time Interval Planning Meeting; p 529-541
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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