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  • Digitale Medien  (4)
  • 1970-1974  (3)
  • 1960-1964
  • 1935-1939  (1)
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Materialart
  • Digitale Medien  (4)
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    Synthesis and characterization of a nitrogen-bridged [12]annulene (1970)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 92 (1970), S. 4468-4470 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja00717a062
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Radioactive Isotopes of Copper (1937)
    [s.l.] : Nature Publishing Group
    Nature 139 (1937), S. 1110-1110 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN view of the fact that copper has only two stable isotopes ... and ..., it is difficult to account for the large number of different half-life periods reported for radioactive copper isotopes. Of the two short periods of 6 min. and 10.5 min., the latter has been satisfactorily attributed to ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/1391110a0
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  • 3
    Digitale Medien
    Digitale Medien
    Adenine requirement for nodulation of pea by an auxotrophic mutant of Rhizobium leguminosarum (1974)
    Springer
    Archives of microbiology 100 (1974), S. 219-238 
    Details
    ISSN: 1432-072X
    Schlagwort(e): Rhizobium ; Nodulation ; Symbiosis ; Adenine ; Thiamine ; Auxotroph ; Prototroph
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A non-nodulating auxotroph (L4-73) derived from an effective strain (L4) of Rhizobium leguminosarum has a growth requirement for adenine and thiamine. The auxotroph was able to infect the roots of the host plant Pisum sativum L. but formed root nodules (ineffective in nitrogen fixation) only when adenine and, to a lesser extent, thiamine were added to the plant substrate. Nodules formed in the presence of adenine were structurally abnormal, containing small cells in which infection threads appeared to have aborted. In the presence of thiamine the auxotroph produced a smaller number of nodules which were slightly more developed and were able to reduce trace amounts of acetylene to ethylene. The adenine effect predominated when both growth factors were added together or separately in different sequences. Adenine amendment was required during the first 6 days following inoculation to achieve the maximum number of nodules. The block in symbiosis could not be fully overcome by sequential addition or removal from the root medium of either compound or by addition of some other adeninecontaining compounds. Partial prototroph revertants requiring adenine but not thiamine induced a nodulation response similar to that of the original auxotroph in the presence of thiamine; partial prototrophs requiring thiamine only were almost fully effective. Bioassay of pea root tissue indicated the presence of significant amounts of both adenine and thiamine or related substances in the roots. The auxotroph was able to compete with the parent strain L4 in nodulation on roots of pea only in the presence of exogenous adenine.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00446319
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  • 4
    Digitale Medien
    Digitale Medien
    The method in the madness (1973)
    Springer
    Journal of religion and health 12 (1973), S. 367-377 
    Details
    ISSN: 1573-6571
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Theologie und Religionswissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01532425
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