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  • COMMUNICATIONS AND RADAR  (1)
  • Cell & Developmental Biology  (1)
  • base metalbenzyliccatalyzedmolecular oxygenoxygenation  (1)
Collection
Keywords
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Years
  • 1
    Electronic Resource
    Electronic Resource
    Stolonization in autolytus varians (1900)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 16 (1900), S. 269-322 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050160202
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Base metal-catalyzed benzylic oxidation of (aryl)(heteroaryl)methanes with molecular oxygen (2016)
    Beilstein-Institut
    Details
    Publication Date: 2016-01-28
    Description: The methylene group of various substituted 2- and 4-benzylpyridines, benzyldiazines and benzyl(iso)quinolines was successfully oxidized to the corresponding benzylic ketones using a copper or iron catalyst and molecular oxygen as the stoichiometric oxidant. Application of the protocol in API synthesis is exemplified by the alternative synthesis of a precursor to the antimalarial drug Mefloquine. The oxidation method can also be used to prepare metabolites of APIs which is illustrated for the natural product papaverine. ICP–MS analysis of the purified reaction products revealed that the base metal impurity was well below the regulatory limit. Beilstein J. Org. Chem. 2016, 12, 144–153. doi:10.3762/bjoc.12.16
    Keywords: base metalbenzyliccatalyzedmolecular oxygenoxygenation
    Electronic ISSN: 1860-5397
    Topics: Chemistry and Pharmacology
    Published by Beilstein-Institut
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    PAPER CURRENT
  • 3
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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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