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  • 1995-1999  (1)
  • 1975-1979  (1)
  • 1965-1969  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 136 (1968), S. 129-136 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zusammenfassung Es werden über die bei den Untersuchungen angewandte Methodik zur Bestimmung der Gesamtcarotinoide und einzelner Carotinoidfraktionen im Eidotter Einzelheiten mitgeteilt. Weiter wird über Fütterungsversuche mit Zusätzen vonβ-Carotin und Bixin zum Futter berichtet. Bixin führt zu keinerlei Anstieg oder Veränderungen der Dottercarotinoide. Bei Verfütterung von 20 mgβ-Carotin/kg Futter resultiert ein Anstieg der Carotinfraktion des Dotters auf durchschnittlich 1,0 mg/kg; dies entspricht einer Ausnutzungsrate von 0,230%. Die Erhöhung des Carotinzusatzes im Futter führte zu keiner wesentlichen Steigerung des Vitamin A-Gehaltes im Dotter.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 136 (1968), S. 203-214 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zusammenfassung Zusätze vonβ-Apo-8′-carotinal,β-Apo-8′-carotinsäureäthylester, Canthaxanthin und Paprika zum Hühnerfutter beeinflußten die Dotterfarbe in unterschiedlichem Umfang. Die ersten beiden Carotinoide führten zu goldgelben, Canthaxanthin und Paprika zu rötlichen Dottern. Die Ausnutzungsraten betrugen fürβ-Apo-8′-carotinal 6,4–11,5, für den Ester 15,3–28,0, für Canthaxanthin 15,8–24,9 und für die Paprikacarotinoide 2,2–3,6%. Von den eingesetzten Carotinoiden wurde lediglich Canthaxanthin in unveränderter Form im Dotter abgelagert. Dem Futter zugesetztesβ-Apo-8′-carotinal ließ sich nur in Spuren als solches im Dotter nachweisen, dagegen lagen erhebliche Mengen seines Oxydationsproduktesβ-Apo-8′-carotinsäure (C 30) vor.β-Apo-carotinsäureäthylester trat im Dotter überwiegend unverändert auf, neben geringen Mengen von freierβ-Apo-8′-carotinsäure (C 30). Die mit dem Paprikazusatz zugeführten durchweg veresterten Carotinoide wurden erst nach Hydrolyse deponiert. Die Provitamineβ-Apo-8′-carotinal undβ-Apo-8′-carotinsäureäthylester bewirkten unter den gegebenen Fütterungsbedingungen keinen Vitamin A-Anstieg im Dotter.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 410 (1999), S. 177-184 
    ISSN: 1573-5117
    Keywords: urban runoff ; pollution ; sewer ; treatment ; real time control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Traditional design of urban run-off systems is based on fixed rules with respect to the points of demarcation between the three systems involved: the sewer system, the treatment plant and the receiving water. An alternative to fixed rules is to model the total system. There is still uncertainty with respect to a more rational formulation of demands on the performance of combined sewer overflows and the performance of separate drainage outlets during rain. There are two approaches to management: The prediction-design approach: models play an essential role in the prediction of performance and evaluation of competing alternatives for design. However, the complexity of these systems is such that the parameters associated with pollution are hardly identifiable on the basis of reasonable monitoring programmes. The empirical-iterative approach: structures are built on simplified assumptions and their performance is evaluated. If inadequate, improvements are made by another trial on an empirical basis. When monitoring has proven the performance to be inadequate, improvements can be achieved by real time control of the whole system, which combines the two approaches. Due to the complexity of the real system, the experience is that simplicity and on-line adaptation are essential features of the real time control system.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Scientometrics 1 (1979), S. 387-404 
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract In this paper, international team research (ITR) is discussed as an object for measurement, systems analysis, and management. The paper is intended as a contribution to the development of a “problem” orientation in scientometrics. In the authors' view, scientometric studies can help solve the problem of efficient ITR in several ways-for instance, by identifying needed improvements in (a) international scientific communication in general, (b) scientific interactions within and among research teams as part of the creative process, and (c) the overall international usage of existing scientific knowledge. The paper discusses the machinery of ITR, models of scientific communication, and some original experience in using computers and telecommunications as tools for scientific interaction. All of these are potential objects for scientometric investigation. The paper itself performs some first steps in obtaining economic parameters for the different forms of international team research.
    Type of Medium: Electronic Resource
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