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  • 1970-1974  (8)
  • 1
    Electronic Resource
    Electronic Resource
    Locke, Don: Memory : The Macmillan Press Ltd., 1971 (1972)
    Cambridge : Cambridge University Press
    Philosophy 47 (1972), S. 285-286 
    Details
    ISSN: 0031-8191
    Source: Cambridge Journals Digital Archives
    Topics: Philosophy
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0031819100041139
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Quantitative evidence concerning the stabilization of sediments by marine benthic diatoms (1974)
    Springer
    Marine biology 27 (1974), S. 191-196 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Six species of benthic diatoms and a natural benthic diatom community were cultured in flasks on a variety of sediments. Diatom species which secreted large quantities of mucilage were effective sediment stabilizers. These mucilage-secreting species significantly reduced resuspension and retarded laminar flow of the sediments when the culture flasks were agitated. Diatom species which secreted little or no mucilage were not effective sediment stabilizers. These non-mucilage-secreting species did not significantly effect resuspension or laminar flow of the sediments when the culture flasks were agitated. A sediment stabilizing mechanism based on the secretion of mucilage by pennate benthic diatoms is proposed. The effect such a process may have on distributional patterns of benthic invertebrates in areas where extensive diatom or other microalgal films occur is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391943
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Fluorescent antibody staining of 1–2 μm sections of hyphae of Ophiobolus graminis sacc. embedded in glycol methacrylate (1971)
    Springer
    Archives of microbiology 75 (1971), S. 281-284 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. Various fixation and embedding procedures were tested on the retention of immunofluorescent staining. Intact hyphae of Ophiobolus graminis Sacc. were fixed in various aldehyde solution both before and after indirect immunofluorescent staining. Paraformaldehyde and glutaraldehyde solutions did not affect the intensity of fluorescence while acrolein quenched fluorescence slightly. 2. Immunofluorescent stained hyphae fixed in 3% glutaraldehyde, dehydrated, embedded in glycol methacrylate and sectioned at 1–2 μm retained fluorescence allowing more precise location of the antigen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00407689
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Immunoelectrophoretic characteristics ofOphiobolus graminis Sacc. as an aid in classification and determination (1970)
    Springer
    Antonie van Leeuwenhoek 36 (1970), S. 541-548 
    Details
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Antigens from four cultures ofO. graminis were compared immunoelectro-phoretically. Each culture produced a characteristic immunogram. More common antigens were found between the two cultures isolated from wheat or the two cultures isolated from oat than between a wheat and an oat isolate. Cell-wall antigens were the best reference antigens for serologic analysis of strain relationship. O. graminis antisera were cross-reacted with antigens from a number of other species of fungi. Relatively few of these cross-reacted with antisera to cell-wall antigens whereas more cross-reacted with antisera to whole-cell antigens. Immunoelectrophoretic analysis of antigens from a range of isolates ofO. graminis indicates specific immunograms which can be determined and separated from the immunograms developed by all other fungi when tested againstO. graminis antiserum. Immunoelectrophoresis can therefore be used as an aid in determiningO. graminis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02069056
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Direct and indirect fluorescent antibody staining ofOphiobolus graminis Sacc. in culture and in the rhizosphere of cereal plants (1970)
    Springer
    Antonie van Leeuwenhoek 36 (1970), S. 549-554 
    Details
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fluorescein isothiocyanate (FITC) conjugates were prepared to whole-cell and cell-wall fractions of four cultures ofOphiobolus graminis W1, W2, O1 and O2. Homologous and heterologous direct and indirect FA staining of the four cultures ofO. graminis gave positive staining in all reactions. This indicated that the four cultures could not be differentiated by fluorescent antibody (FA) staining. Species specificity of the conjugates was shown by the staining ofO. graminis hyphae in the rhizosphere of wheat and oat roots. Plant tissues were not stained. Furthermore out of 52 rhizosphere isolates stained with whole-cell and cell-wall conjugates of the four cultures ofO. graminis, only 7 cross-reacted with the whole-cell conjugates whereas none cross-reacted with the cell-wall conjugates. These results indicate the potentiality of the FA staining technique as a serological tool in localizing, and identifyingO. graminis amongst mixed fungal populations in the rhizosphere of roots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02069057
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Immunodiffusion and fluorescent antibody methods to distinguish rod from coccoid forms of a species ofArthrobacter (1972)
    Springer
    Antonie van Leeuwenhoek 38 (1972), S. 169-176 
    Details
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Immunological methods for distinguishing rod from coccus forms of anArthrobacter species are presented. Diffusion precipitation tests indicate that the rod form is antigenically more complex than the coccus form with respect to both soluble and cell-wall fractions. Antisera prepared against fractions of coccus and rod forms are able, after cross absorption, to specifically label rod and coccus forms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02328089
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Competition between soil- and seed-borneRhizobium trifolii in nodulation of introducedTrifolium subterraneum (1970)
    Springer
    Plant and soil 32 (1970), S. 293-302 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Native rhizobia associated withTrifolium albopurpureum, T. bifidum, T. ciliolatum, T. depauperatum, T. dichotomum, T. flavulum, T. melanthum, T. microcephalum, T. microdon, T. oliganthum andT. tridentatum were found in Northern California range soils. These rhizobia nodulate subterranean clover but are ineffective in nitrogen fixation with this host. Native rhizobia compet with those in commercial inoculants to form nodules. To ensure effective nodulation by nitrogen fixing rhizobia, commercial inoculants should be applied at rates greater than those recommended by the manufacturerse Effective nodulation was achieved by an application of 7.5×104 rhizobia per seed, four times the recommended rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01372870
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Competition between soil- and seed-borneRhizobium trifolii in nodulation of introducedTrifolium subterraneum (1970)
    Springer
    Plant and soil 32 (1970), S. 293-302 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Native rhizobia associated withTrifolium albopurpureum, T. bifidum, T. ciliolatum, T. depauperatum, T. dichotomum, T. flavulum, T. melanthum, T. microcephalum, T. microdon, T. oliganthum andT. tridentatum were found in Northern California range soils. These rhizobia nodulate subterranean clover but are ineffective in nitrogen fixation with this host. Native rhizobia compet with those in commercial inoculants to form nodules. To ensure effective nodulation by nitrogen fixing rhizobia, commercial inoculants should be applied at rates greater than those recommended by the manufacturerse Effective nodulation was achieved by an application of 7.5×104 rhizobia per seed, four times the recommended rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01372870
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    Paper (German National Licenses)
    Fulltext
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