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  • MACHINE ELEMENTS AND PROCESSES  (1)
  • Polymer and Materials Science
  • 2000-2004
  • 1980-1984
  • 1970-1974  (2)
  • 1972  (2)
Collection
Publisher
Years
  • 2000-2004
  • 1980-1984
  • 1970-1974  (2)
Year
  • 1
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The enthalpy in the ring-cleavage polymerization of liquid cyclopentene to solid trans-polypentenamer (TPR) was calculated to be 4.2 kcal/mole; in the polymerization of liquid cyclopentene to solid cis-polypentenamer it was found to be 3.2 kcal/mole. The value of 4.5 kcal/mole determined calorimetrically in the polymerization of cyclopentene to trans-polypentenamer with a trans content of 65% agrees well with the calculated values.
    Notes: Für die Polymerisationsenthalpie der ringöffnenden Polymerisation von flüssigem Cyclopenten zu festem trans-Polypentenamer (TPR) wurde ein Wert von 4,2 Kcal/Mol errechnet; für die Polymerisation des flüssigen Cyclopentens zu festem cis-Polypentenamer ergibt die Berechnung eine Wert von 3,2 Kcal/Mol. Der kalorimetrisch bestimmte Wert von 4,5 Kcal/Mol für die Polymerisation von Cyclopenten zu trans-Polypentenamer mit einem trans-Gehalt von 65% stimmt mit den berechneten Werten gut überein.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2019-06-27
    Description: The criteria for cargo handling at the operational site of space shuttles are presented, based on assumed program requirements. The concepts for the following functions are described: maintenance and checkout facility, transfer to launch pad, and launch pad. The requirements for the ground equipment are given along with the general sequences for cargo loading.
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Type: NASA-TM-X-68572 , KSC-TR-1145
    Format: application/pdf
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