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  • 1975-1979  (2)
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Material
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  • 1
    Electronic Resource
    Electronic Resource
    Comparative studies on the fine structure of purple membrane fromHalobacterium cutirubrum andHalobacterium halobium (1978)
    Springer
    The journal of membrane biology 43 (1978), S. 277-294 
    Details
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Direct comparison of the absorption and circular dichroic spectra of dark- and light-adapted purple membrane fromHalobacterium cutirubrum andHalobacterium halobium indicated no apparent species differences. In addition, sequential bleaching and regeneration of the purple membrane with concomitant monitoring of the absorption and circular dichroic spectra showed no species differences as well. Furthermore, perturbation of the structure of the purple membrane from either species with a detergent, Triton X-100, yielded similar spectral changes. It was concluded: (i) no apparent differences exist in the molecular organization and protein fine structure of the two purple membranes, (ii) if exciton interaction among the retinal chromophores is a reasonable possibility in the case of the purple membrane fromHalobacterium halobium, it must be similarly so for the membrane fromHalobacterium cutirubrum, (iii) the effects of light adaptation on the membrane structure of both species are essentially the same, and (iv) the underlying molecular mechanisms for the bleaching and regenerative processes must be similar, if not identical, for the purple membranes of the two species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01933483
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Empirische Untersuchung von Schwerpunkten der OR-Praxis in 525 Industriebetrieben der BRD (1978)
    Springer
    Mathematical methods of operations research 22 (1978), S. B185 
    Details
    ISSN: 1432-5217
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Summary The empirical study has shown that the modern decisiontechniques of Operations Research have found favour on a large scale in western-german industrial firms. The main application of Operations Research, however, is concentrated relatively narrow on a few problems. These are: productionplanning, storing, and sales forecasting. With increasing size of business the spectrum of OR-application extends to financial problems, investment problems and at least to corporate models.
    Notes: Zusammenfassung Die Untersuchung zeigt, daß die modernen quantitativen Entscheidungstechniken, wie sie von Operations-Research zur Verfügung gestellt werden, in beachtlichem Umfang in Industrieunternehmen Fuß gefaßt haben. Jedoch sind die Gebiete, in denen die Anwendung von Operations Research ihren Schwerpunkt hat, relativ eng begrenzt. Es sind dies die Fertigungsplanung und Fertigungssteuerung, die Lagerhaltung sowie die Absatzprognose. Mit zunehmender Unternehmensgröße erweitert sich das Spektrum in Richtung Finanzbereich, Investitionsbereich sowie integrierte Gesamtplanungsmodelle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01917685
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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