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  • COMMUNICATIONS AND RADAR  (1)
  • PACS: 81.15.Fg; 64.60.My; 61.66.Dk  (1)
  • base metalbenzyliccatalyzedmolecular oxygenoxygenation  (1)
  • ddc:330
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  • 1
    Electronic Resource
    Electronic Resource
    Thin film mixtures synthesized by cross-beam PLD (1999)
    Springer
    Applied physics 69 (1999), S. S463 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 81.15.Fg; 64.60.My; 61.66.Dk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Fabrication of metastable binary solid state film mixtures with continuously variable composition by asymmetric cross-beam PLD is demonstrated. In this technique, the materials are mixed directly in the intersection region of colliding plasmas of individual target materials. This technique can be advantageous for synthesis of solid state quasi-solutions of partially miscible materials, where one can expect interesting mechanic properties and magnetic transformations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051439
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    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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    Unknown
    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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