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  • 1950-1954  (4)
  • 1
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Es wurden Untersuchungen über die Größe: Häufigkeitsbeziehung (size-frequency distribution) örtlich erzeugter, durchdringender Schauer in Seehöhe unter Aluminium und Blei ausgeführt. Die Verteilungen zeigen keinen irgendwie bemerkenswerten Unterschied, wie er nach der „Mehrfach“-Theorie vonHeitler undJanossy erwartet würde. Die experimentellen Ergebnisse sind eher in Übereinstimmung mit der Theorie echter „Vielfach“-Erzeugung, wie sie vonHeisenberg vorgeschlagen wurde.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 35-35 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Of forty-five specimens collected from different parts of Calcutta and examined, thirty-six adult insects and nymphs harboured in their guts a large number of trypanosomes in various stages of development. For the purpose of observation each insect was treated in the following manner. The entire ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 13 (1954), S. 461-469 
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The scattering of light by solutions of a well-fractionated sample of polymethyl methacrylate in acetone, methyl ethyl ketone, and benzene, have been measured using 4358 and 5461 A. wave lengths as incident radiations. The average molecular weights of the polymer from turbidity measurements and lengths determined from angular dissymmetries of scattered light are 571,000 and 760 A. in acetone, 38,400,000 and 715 A. in methyl ethyl ketone, and 408,000 and 375 A. in benzene. The abnormal molecular weight observed in methyl ethyl ketone solution may be ascribed to low μ - μ0 value of the medium. The greater molecular extension in ketone than in benzene solutions is explained in terms of the relative magnitudes of solute-solvent interaction. The depolarization ratios ρu, ρv and ρh have been measured and the decrease of ρv and ρh with increase in concentration of the polymer in ketonic solvents and little change under similar conditions in benzene, are discussed in the light of the “molecular field effect” of Gans.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 34 (1951), S. 652-677 
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die vorliegende Arbeit befasst sich mit der Konstitutionsaufklärung des Andrographolids, eines Bitterstoffes der indischen Medizinalpflanze Andrographis paniculata Nees. Verschiedene, in der früheren Literatur vorkommende Widersprüche und Unstimmigkeiten konnten dabei abgeklärt werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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