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  • LUNAR AND PLANETARY EXPLORATION  (1)
  • Physics  (1)
  • 2020-2024
  • 1980-1984
  • 1975-1979  (2)
  • 1979  (2)
Collection
Keywords
Publisher
Years
  • 2020-2024
  • 1980-1984
  • 1975-1979  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Some aspects of the polymerization of n-butyl vinyl ether by chromyl chloride (1979)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 17 (1979), S. 673-681 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The rate of n-butyl vinyl ether polymerization by chromyl chloride is first order in [catalyst] and second order in [monomer]. Added H2O (after a certain concentration) and HCl increase the rate, thiophene retards the rate, while pyridine inhibits the rate. DP is independent of [chromyl chloride] and increases with increasing [monomer] up to 1M, thereafter becoming independent of it. Both rate and DP increase over the range 10-32°C and decrease at higher temperatures.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1979.170170306
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Trace element contents of selected antarctic meteorites, 1 (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Data are reported for volatile/mobile Ag, As, Au, Bi, Cd, Co, Cs, Cu, Ga, In, Rb, Sb, Se, Te, T1 and Zn in exterior and/or interior samples of four Antarctic meteorites: 77005 (unique achondrite); 77257 (unreilite); 77278 (L3); 77299 (H3). Exterior samples reflect contamination and/or leaching by weathering but trace element (ppm-ppt) contents in interior samples seem reasonable for representatives of these rare meteoritic types. The 77005 achondrite seems related to shergottites; other samples extend compositional ranges previously known for their types. With suitable precautions, Antarctic meteorite finds yield trace element data as reliable as those obtained from previously known falls.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CR-158583
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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