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  • 1
    Electronic Resource
    Electronic Resource
    A 41, XYY mouse (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 821-822 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Cytogenetic analyses of bone marrow and meiotic cells in an apparently normal male mouse clearly revealed the presence of an extra Y chromosome leading to 2n=41, XYY. During meiosis the sex chromosomes formed all possible types of combinations (XYY, XY/Y, YY/X and X/Y/Y). Compared to 40, XY normal mice, the sperm count was significantly less, but the incidence of sperm head abnormality was at the normal level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985659
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Precipitation of copper using Desulfovibrio sp. (1993)
    Springer
    World journal of microbiology and biotechnology 9 (1993), S. 280-281 
    Details
    ISSN: 1573-0972
    Keywords: Bioprecipitation ; copper ; Desulfovibrio ; sulphate-reducing bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Sulphate-reducing bacteria isolated from submerged soil samples of paddy fields effectively precipitated copper from aqueous solution with maximum effect (75%) at 25 ppm Cu2+. As the copper concentration was increased to 100 ppm, precipitation efficiency decreased significantly. The use of bacteria to precipitate heavy metal ions from aqueous effluents is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327855
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Microbial leaching of lateritic nickel ore (1993)
    Springer
    World journal of microbiology and biotechnology 9 (1993), S. 255-257 
    Details
    ISSN: 1573-0972
    Keywords: Aspergillus niger ; Bacillus circulans ; Bacillus licheniformis ; bacteria ; bioleaching ; fungi ; lateritic nickel ore ; Thiobacillus ferrooxidans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Lateritic nickel ore from the Sukinda Mines, Orissa, India, was leached using Thiobacillus ferrooxidans, Bacillus circulans, Bacillus licheniformis and Aspergillus niger at 5% (w/v) solid: liquid ratio for 5–20 days. Maximum leaching of Ni was achieved with B. circulans (85%) and Aspergillus niger (92%) after 20 days. Bacillus circulans showed significantly higher rate of leaching than the other organisms giving 80% Ni extraction after 15 days. The importance and usefulness of heterotrophic organisms in metal extraction are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327850
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    Paper (German National Licenses)
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