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  • Biochemistry and Biotechnology  (1)
  • rocks  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Rock mechanics and rock engineering 4 (1972), S. 79-87 
    ISSN: 1434-453X
    Keywords: Testing ; tensile strength ; split-cylinder method ; double-punch method ; rocks ; research
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Description / Table of Contents: Zusammenfassung Ein neu entwickeltes „double-punch“-Verfahren für die Bestimmung der Zugfestigkeit von Gesteinen wird beschrieben. Die Vorbereitung der Versuchsobjekte und die Durchführung der Versuche werden erläutert. Außerdem werden die Zugfestigkeiten nach dem „double-punch“- und „split-cylinder“-Verfahren verglichen.
    Abstract: Résumé Dans cet article une nouvelle méthode de double poinçonnement permettant de déterminer la résistance à la traction des roches est présentée. La préparation des éprouvettes ainsi que la méthode d'essai sont décrites. Une comparaison est faite entre la résistance à la traction obtenue par double poinçonnement et par fendage d'un dylindre (compression diamétrale).
    Notes: Summary This paper presents an experimental study of the newly developed double-punch test method for determination of the tensile strength of rocks. The method for preparation of test specimens and test procedure is reported and discussed. Comparisons of tensile strength determined from double-punch and split-cylinder tests are also presented.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 18 (1976), S. 1557-1572 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Tower cycling fermentors for the production of single-cell protein from volatile substrates were studied. The mass transfer, mixing and circulation patterns, and residence time distribution (RTD) curves were investigated in these vessels. This study suggests that the tower cycling fermentors for volatile substrates fermentation may improve product yields and at the same time reduce the power consumption, thereby resulting in a significant increase in operating cost savings and capital profits. The results of this research further indicate a future potential for commercial scale tower cycling fermentors.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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