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  • 1985-1989  (2)
  • 1985  (2)
  • 1
    ISSN: 1432-072X
    Keywords: Rhizobium isolates ; Uptake hydrogenase ; Native ecosystem ; Cow pea miscellany hosts ; Hup+ and Hup- Rhizobium strains ; Acetylene reduction activity (ARA) ; Competence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rhizobium strains nodulating summer legumes cow pea [Vigna unguiculata (L.)], green gram [V. radiata (L.) (Wilczek)], black gram [V. mungo (L.) (Hepper)] and cluster bean [Cyamopsis tetragonoloba (L.) (Taub)] and a winter legume chick pea [Cicer arietinum (L.)] were surveyed in the Northern Plains of India and screened for hydrogenase activity to determine distribution of Hup character in the native ecosystem. It was observed that 56% of the Rhizobium strains of summer legumes were Hup+ whereas that of the winter legume, chick pea, were all Hup-. Ex planta acetylene reduction activity was observed in most of the Hup+ but not in the Hup- strains of any of the host species. In summer legume, mixed inoculation of Hup+ and Hup- strains, under sterilized as well as unsterilized soil conditions, showed that the host species were predominantly nodulated with Hup+ strain.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    ISSN: 0748-8025
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: Steady-state finite plane strain deformations of a uniformly rotating rubber-covered roll contacting a rigid plane surface have been studied by the finite element method. The rubberlike material has been modelled by a constitutive relation recently proposed by Christensen. Both the hydrostatic pressure within an element and the nodal displacements are taken as independent variables. For a constant indentation of the roll cover, the effect of the change in the thickness of the rubberlike layer, the speed of rotation and the values of the material moduli on the total load required to cause the indentation are presented.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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