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  • 1985-1989  (2)
  • 1950-1954
  • General theories and computational techniques  (1)
  • Non-autotrophic sulfur bacteria  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Liouville operator resolvent method applied to the hubbard dimer (1986)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 8 (1986), S. 625-634 
    Details
    ISSN: 0392-6737
    Keywords: General theories and computational techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si considera il problema di due loci atomici tipo idrogeno (statis solamente) accoppiati con una matrice hopping. Si impiega un nuovo formalismo, il metodo risolutore dell’operatore di Liouville, per valutare la funzione termodinamica di Green per la particella singola per questo sistema. Si discutono anche dettagli del metodo.
    Notes: Summary The problem of two hydrogenlike atomic sites (s-shells only) coupled via a hopping matrix is considered. We employ a new formalism, the Liouville operator resolvent method, to evaluate the single-particle thermodynamic Green’s function for this system. Details of the method are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02451087
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Occurence and regulation of Calvin cycle enzymes in non-autotrophic Beggiatoa strains (1988)
    Springer
    Archives of microbiology 151 (1988), S. 15-19 
    Details
    ISSN: 1432-072X
    Keywords: Begglatoa spp. ; Ribulose-1,5-bisphosphate carboxylase ; Phosphoribulokinase ; Regulation of Calvin-cycle enzymes ; Heterologous gene-probe hybridization ; Non-autotrophic sulfur bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract To date only marine strains of the genus Beggiatoa have been proven to have the capacity for lithoautotrophic growth. The two best characterized freshwater strains (B18LD and OH-75-2a) — previously tested with no evidence of autotrophic potential — were reinvestigated in the current study. Heterotrophically grown cells from exponential or early stationary phase showed extremely low ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) activities (0.002–0.2 nmol CO2·mg prot-1 min-1). After acetate limitation terminated growth both strains demonstrated increased RuBisCO activity with a maximum achieved 1–3 days into stationary phase. For a single growth cycle, activity could increase by more than 100-fold (strain OH-75-2a), but the highest activity achieved was less than 5% of that observed in a lithoautotrophic control. Phosphoribulokinase activity was approximately an order of magnitude greater than the corresponding RuBisCO activity and showed a similar pattern of regulation. A gene probe derived from the RuBisCO large subunit gene of Anacystis nidulans hybridized strongly with DNA from strain OH-75-2a and the autotrophic marine control but not with DNA from strain B18LD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00444662
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    Paper (German National Licenses)
    Fulltext
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