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  • Artikel: DFG Deutsche Nationallizenzen  (2)
  • 1990-1994
  • 1985-1989  (2)
  • 1989  (2)
Datenquelle
  • Artikel: DFG Deutsche Nationallizenzen  (2)
Materialart
Erscheinungszeitraum
  • 1990-1994
  • 1985-1989  (2)
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    A class of glyphosate-selected mutants of the cyanobacterium Nostoc muscorum showing loss of ammonium transport activity (Amt−), heterocyst formation (Het−) and nitrogenase activity (Nif−) (1989)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 60 (1989), S. 0 
    Details
    ISSN: 1574-6968
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: Abstract Glyphosate was considerably more growth inhibitory to N2-assimilating than to ammonium-assimilating cultures of N. muscorum. The herbicide, while inhibiting nitrogenase activity and ammonium [14C]-methylammonium) uptake activity caused significant increase in the biosynthetic activity of in vivo glutamine synthetase (GS) in N2-assimilating or ammonium-assimilating cultures and nearly 50% derepression of heterocyst formation and nitrogenase activity in ammonium assimilating cultures. The differential toxicity of the herbicide to N2-fixing cultures led us to use this herbicide as selective agent to isolate a class of mutant clones on ammonium-supplemented medium which lacked heterocyst differentiation (Het−), nitrogenase activity (Nif−) and ammonium [14C]-methylammonium) uptake activity (Amt−). It is concluded that heterocyst differentiation, nitrogenase activity and ammonium uptake activity are all under the regulatory control of common genetic determinants in the cyanobacterium.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1574-6968.1989.tb03443.x
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Prediction of Thermal Conductivity of Fruit Juices by a Thermal Resistance Model (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 54 (1989), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A model for prediction of thermal conductivity of fruit juices was developed. The model was based on the concept of thermal resistances in parallel and compared with other models and experimental values. Effect of temperature and solid concentration on thermal conductivity was discussed. Extension of the model to predict thermal conductivity of fruit juices below the freezing temperature was briefly discussed. The model gave error of less than 10% from the experimental values for juices for which such values were available.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.1989.tb07933.x
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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