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  • 1980-1984  (3)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    On-line estimation of cell growth for glutamic acid fermentation system (1983)
    Springer
    Applied microbiology and biotechnology 17 (1983), S. 168-172 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary For glutamic acid fermentation system using molasses, on-line estimation of cell growth during the exponential growth phase was investigated based on the measurement of carbon dioxide evolution rate (CER). The CER was continuously calculated using microcomputer together with O2 and CO2 analyzers. It was found that a linear relationship existed between CER and cell concentration. Therefore it was possible to determine specific growth rate and specific CER accurately by measuring CER with time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00505883
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dynamic mechanical properties of interpenetrating polymer networks of polyurethane and poly(styrene-co-acrylonitrile) (1983)
    Springer
    Polymer bulletin 10 (1983), S. 126-133 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Interpenetrating polymer networks (IPN's) of a combination of polyurethane (PU) and poly(styrene-co-acrylonitrile) (PSAN) were prepared by the simultaneous polymerization process. To observe the relative rate effect of the simultaneous polymerization, the polymerization kinetics of PU and PSAN were studied. The gel-times of PU and PSAN network were theoretically calculated, and three types of SIN's with different rates of network formation in each component were prepared for comparison. IPN's with Mc=3000 and Mc=4900 were prepared to observe the influence of the crosslink density. The glass transition behavior studied by the dynamic mechanical analysis showed larger shifts in Tg's in SIN's with similar gel-times and smaller Mc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275845
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of temperature on the kinetics of ethanol production by Saccharomyces uvarum (1980)
    Springer
    Biotechnology letters 2 (1980), S. 141-146 
    Details
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary In view of the interest in high productivity fermentations at increased temperatures, the effect of temperature on the kinetics of ethanol production by Saccharomyces uvarum was investigated in the range 25–43°C. Using a mathematical model and a nonlinear computer simulation package, the kinetic parameters at each temperature were estimated. It was found that the optimal temperature for growth was 34°C, while the specific ethanol production rate was maximal at 37–43°C. Up to 37°C, the inhibitory effects of ethanol on growth and specific ethanol production rate were unaffected by temperature. However, above this temperature, ethanol inhibition increased significantly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00162935
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    Paper (German National Licenses)
    Fulltext
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