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  • 1
    Electronic Resource
    Electronic Resource
    The spatial distribution of desmids in lakes in northern Minnesota, U.S.A. (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 4 (1974), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: As a result of studies in certain lakes in northern Minnesota it has been found that the spatial distribution of desmids in them depends especially on the following factors: the constitution, abundance and distribution of the lakes' submerged aquatic flora and the morphometry and consequent patterns of their water circulation. The study has also shown a positive relationship between the size of desmid cells present in the plankton and the extent of water circulation. The latter factor may determine the composition and hence the diversity of lake phytoplankton.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1974.tb00114.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Monovalent—divalent cation ratios and the occurrence of phytoplankton, with special reference to the desmids (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 13 (1983), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. We have analysed data from ninety-nine Scottish freshwater lochs, to explore the relationship between water chemistry and phytoplankton assemblages. Our results confirm that there are strong correlations both between the phytoplankton quotient and divalent cation concentrations, particularly Ca++, and also between the phytoplankton quotient and the (Na++ K+)/(Ca+++ Mg++) ratio. However, the latter is evidently a spurious relationship, arising from the former association, together with an association between Ca++ and the (Na++K+)/ (Ca+++ Mg++) ratio. The observed correlation does not persist if account is taken of concomitant variations in the Ca++concentration. This conclusion is suggested both by relatively informal analyses (median polish, partial correlation coefficients) and by more formal modelling and testing (stepwise regression, all-subsets regression).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1983.tb00667.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Occurrence of the Terrestrial Alga, Fritschiella tuberosa , Iyengar, in Africa (1952)
    [s.l.] : Nature Publishing Group
    Nature 169 (1952), S. 754-754 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Khartoum plants, though in general agreeing well with the descriptions of lyengar and Singh, differ, however, in the poor development of the secondary projecting system. Observations in the field and under laboratory conditions suggest that this is due to the very dry atmospheric conditions and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/169754a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Oscillating Combustion of Gun Propellants in the Closed Vessel. I. preliminary investigation (1985)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 10 (1985), S. 97-104 
    Details
    ISSN: 0721-3115
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The oscillating combustion, which takes place in the closed vessel when certain colloidal gun propellants are fired has been investigated. The amplitude of the oscillation depended on the geometry and flame temperature of the propellant. For propellants having the same composition but different geometry, the amplitude of the oscillation varied inversely with the maximum pressure in the vessel. This was tentatively ascribed to vortex formation during combustion.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prep.19850100403
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    Paper (German National Licenses)
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