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  • 1
    Electronic Resource
    Electronic Resource
    Binary and ternary ion-exchange equilibriums. Sodium-cesium-manganese-Dowex 50W-X8 and cesium-manganese-strontium-Dowex 50W-X8 systems (1973)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 77 (1973), S. 1288-1293 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100629a022
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Role of Photodegradation in Pentachlorophenol Decontamination in Soils (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 665 (1992), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1992.tb42604.x
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of early social deprivation on rhesus monkeys: Social responsiveness (1980)
    Springer
    Primates 21 (1980), S. 510-514 
    Details
    ISSN: 0032-8332
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Twelve rhesus infants were subjected to early total social deprivation in a free-ranging environmental situation for the periods of 6, 12, and 18 months. After the termination of treatment at the end of each period, a group of four subjects was tested for social responsiveness with six stimulus animals belonging to both the sexes and three age groups. Responses of the subjects were compared with similarly tested, naturally reared controls. Purpose of the experiment was to separate the effect of social deprivation from that of physical restrictions which had confounded the results of earlier experiments. It is concluded that the deficit in social responsiveness indicated by quantitative measures should be interpreted in the light of qualitative observations. Subjects were found deficit in “social communication” and “social manners” that interfered with social interactions. It is suggested that appropriate social experience enabling the subjects to learn social communication should benefit them as they possess primary social response tendencies to an appreciable degree.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02373839
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  • 4
    Electronic Resource
    Electronic Resource
    Coalescence frequencies in Waldhof-agitated systems (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 17 (1975), S. 1697-1703 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260171112
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  • 5
    Electronic Resource
    Electronic Resource
    Regulation phenomena in methanol consuming yeasts: An experiment with model discrimination (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 23 (1981), S. 499-521 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Assimilation as well as dissimilation of methanol in yeasts takes place through its oxidative intermediate formaldehyde which is several times more toxic to the growth of microorganisms than methanol itself. Still, the role of formaldehyde, produced during methanol assimilation, upon growth of yeasts is not clear. In the present paper, an attempt has been made to throw some light upon this aspect. Starting with a basic frame work for methanol uptake by yeasts, several models were developed assuming different modes of regulation of key enzymes by methanol and/or formaldehyde. The main feature of the basic framework consists in consideration of two routes for oxidation of formaldehyde to CO2, one associated and the other not associated with production of energy. Further, the rate of energy production form the energy-associated oxidation of formaldehyde is assumed to be controlled by the rate of energy consumption by anabolic reactions. The models were discriminated by subjecting these to biological constraints. As a result, the successful model suggests that in spite of higher inherent toxicity of formaldehyde, methanol exerts the controlling influence upon growth under normal conditions.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260230304
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  • 6
    Electronic Resource
    Electronic Resource
    Evaluation of feeding strategies in carbon-regulated secondary metabolite production through mathematical modeling (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 23 (1981), S. 717-738 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: There is now growing evidence that the production of many secondary metabolic by microorganisms is subjected to carbon-catabolite regulation. Even though the exact mode of this regulation is not yet clear, an engineering analysis of the production process is still possible based upon a suitable hypothesis. By way of simulation of penicillin fermentation data obtained from the literature, a mechanistic model involving a substrate inhibition kinetics of product formation has been verified in this paper. Such a model has been found successful not only in predicting simple sugar-feeding strategy, but also a complicated computer guided strategy based upon controlling biomass growth rates in the tropo and idiophases. Using this model, for strategies for sugar feeding into penicillin fermentation have been investigated. These results show that similar penicillin productivities can be obtained using any of these strategies provided fermentations are carried out under optimal conditions corresponding to the strategy chosen. Effect of maximum oxygen transfer capacity of the fermentor under the conditions of fungal growth has been incorporated using an upper limit of biomass concentration on achievement of which the fermentations must be stopped due to serious oxygen limitations. Results of model simulations with such limits throw light upon the way in which different fermentors may behave with respect to product formation.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260230406
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  • 7
    Electronic Resource
    Electronic Resource
    An induction-repression model for growth of yeasts on glucose-cellobiose mixtures (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 20 (1978), S. 927-935 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260200614
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  • 8
    Electronic Resource
    Electronic Resource
    A new method for measuring drop-size distribution in hydrocarbon fermentations (1974)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 16 (1974), S. 1557-1564 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260161114
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  • 9
    Electronic Resource
    Electronic Resource
    Purification of sugars through microbial rejection (1977)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 19 (1977), S. 605-610 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260190418
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  • 10
    Electronic Resource
    Electronic Resource
    Dispersions in hydrocarbon fermentation. A retrospective study (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 17 (1975), S. 541-556 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A nondimensionalized plot, obtained by normalizing the drop-size distribution in the hydrocarbon phase using the Sauter mean diameter, shows a tendency towards self-preservation of the distribution. Changes of distribution in time during the course of fermentation, initial dispersed phase fraction, speed of rotation, and reactor size were taken into account. Using this self-preserving property, an empirical (single parameter) equation has been proposed for drop-size distribution. Data, available from the literature, are presented for non-biological and biological systems (gas-oil, n-hexadecane, and n-hexadecane dissolved in dewaxed gas oil as dispersed phases). The parameter, Sauter mean diameter, has been correlated with the operating conditions, and a critical review presented. Cell density was found to have significant effect on Sauter mean diameter. This effect has also been empirically explained. The possibilities of using generalized distribution in predicting the performance of fermenters is outlined.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260170407
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