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  • 2000-2004
  • 1995-1999
  • 1955-1959  (4)
  • 1958  (4)
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  • 2000-2004
  • 1995-1999
  • 1955-1959  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    The Thermal Dimerization of Perfluoropropene1 (1958)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 80 (1958), S. 842-845 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01537a023
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal Syntheses of Telomers of Fluorinated Olefins. III. Perfluoropropene Telomer Bromides1 (1958)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 80 (1958), S. 851-853 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01537a025
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic response ofAntirrhinum majus to acute and chronic plant irradiation (1958)
    Springer
    Molecular genetics and genomics 89 (1958), S. 7-13 
    Details
    ISSN: 1617-4623
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Clonal lines ofAntirrhinum majus heterozygous for flower color have been used to study somatic mutations induced by irradiating plants with chronic gamma rays from cobalt-60 and acute X rays. Pink or white flecks and sectors of various sizes on the purple flowers are interpreted as resulting from mutational events at different times in flower development. Acute X-ray treatment of pre-flowering stages caused no visible change in flowers opening prior to the 15th day thereafter. On the 16th to 19th days there was dense mottling, and by the 20th or 21st day numerous eight-cell mutant spots could be counted. The number of spots induced by 1,000 r of X rays was used to obtain a preliminary estimate of an average mutation rate for the three genes studied of 6.33×10−6 per cell per roentgen. Chronic irradiation in a gamma radiation field and greenhouse showed a linear response of mutation rate to daily dose rate, the actual rate being subject to seasonal variation. There were occasional indications of non-linearity but further tests have failed to show any significantly higher mutagenic efficiency of dose rates below 6 r/day. In plants removed from chronic gamma irradiation the frequency of mutation spots returns to the spontaneous level after about six weeks. The appearance, however, of mutant sectors on plants several months after exposure to both acute and chronic radiation indicates the induction of persistent genetic changes. Progeny tests of seeds and cuttings are planned to test the nature of these genetic events.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00888497
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Synthese und Abbau cytostatisch wirksamer cyclischer N-Phosphamidester des Bis-(β-chloräthyl)-amins (1958)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 70 (1958), S. 539-544 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird über die Synthese sowie über hydrolytische und enzymatische Abbauuntersuchungen von neuartigen, cytostatisch wirksamen Diamidophosphorsäure-monoestern mit cyclischer Struktur berichtet. Als gemeinsames Merkmal enthalten sie den N, N-Bis-(β-chloräthyl)-amin-Rest in phosphamidischer Bindung. Mit Hilfe verschiedener Methoden und Versuchsanordnungen wird nachgewiesen, daß diese Cytostatica der N-Lost-Reihe im wäßrigen Milieu in ganz bestimmter Weise aufgespalten werden.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19580701705
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    Paper (German National Licenses)
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