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  • 1
    Electronic Resource
    Electronic Resource
    Origin of hydrocarbons in triassic serpiano oil shales: Hopanoids
    Amsterdam : Elsevier
    Organic Geochemistry 10 (1986), S. 943-949 
    Details
    ISSN: 0146-6380
    Keywords: Serpiano ; benzohopanes ; hopanes ; hopenes ; hydrous-pyrolysis ; methylbenzohopanes ; methylhopanes ; methylhopenes ; methylsecohopanes ; secohopanes
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0146-6380(86)80031-6
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Activity and adaptation of nitrilotriacetate (NTA)-degrading bacteria: field and laboratory studies (1990)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: Adaptation of bacterial activity for the degradation of nitrilotriacetate (NTA) was studied using natural sediment samples and an NTA-degrading bacterium (strain ATCC 29600). Sediment samples from a river with persistent levels of NTA had much higher NTA-degradative activity than comparable samples from a less contaminated control site. When sediment from the control site was exposed to high levels of NTA a 5 day lag preceded an abrupt increase in NTA degradation while strain 29600 colonized on sand and grown in the absence of NTA became induced within eight hours. The induction of strain 29600 was compared between bacteria in suspension and cells attached to sand. The sand-associated bacteria became induced 4 to 5 h before the planktonic suspension and displayed over threefold greater specific activity. Suspensions of strain 29600 became adapted within 8 h when placed in membrane diffusion chambers that were immersed within a municipal wastewater reactor containing NTA. These findings support the concept that induction is a part of the process of bacterial adaptation to degrade NTA and sand-associated bacteria can adapt more quickly to and have a greater degradative activity for NTA than planktonic cells.
    Keywords: Environment Pollution
    Type: Water research (ISSN 0043-1354); Volume 24; 7; 875-81
    Format: text
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    NASA TECHNICAL REPORTS
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