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  • 1990-1994  (2)
  • 1965-1969
  • Bacterial immobilized cells  (1)
  • chromium  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Plasma reaction of group VI metal carbonyls (1992)
    Springer
    Plasma chemistry and plasma processing 12 (1992), S. 147-159 
    Details
    ISSN: 1572-8986
    Keywords: Metal carbonyls ; PECVD ; chromium ; molybdenum ; tungsten
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract The hexacarbonyl compounds of Cr, Mo, and W have been used as precursors in plasma-enhanced chemical vapor depositions (PECVD). They form films of good adherence on glass, ceramics, and a variety of polymers. The nature of the deposits depends very much on the composition of the gas, which forms the plasma. When pure argon is used, the resulting films contain considerable amounts of oxygen and carbon. Films deposited in hydrogen/argon mixtures consist of the metal and/or the carbide. With Ar/O2 mixtures, Mo(CO)6 and W(CO)6 are converted into films of MoO3 and WO3, respectively. When H2S/H2 mixtures are used as plasma gas, Mo(CO)6 yields films consisting of MoSx.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01447443
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Preservation of immobilized bacterial cell-matrix by drying for direct use in microbial sensors (1993)
    Springer
    World journal of microbiology and biotechnology 9 (1993), S. 243-247 
    Details
    ISSN: 1573-0972
    Keywords: Bacterial immobilized cells ; liquid-drying ; preservation ; microbial biosensors ; xenobiotics detection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A simple and effective method for the drying of immobilized bacterial cells to be used directly in a microbial biosensor for measurement of activity is reported. As a case example, plasmid-bearing cells of Alcaligenes eutrophus JMP 134, DSM 4058 were immobilized on various carriers and liquid-dried. The dried cell-matrix was used directly after rehydration/reactivation as the biological component of a biosensor for determining the concentration of xenobiotic compounds in the environment. Good viability results were obtained after long-term storage and cells exhibited no loss of plasmids responsible for the 2,4-dichlorophenoxyacetic acid (2,4-D) degradation. The activity of the cells for 2,4-D was proved using a respiration electrode. No time-consuming, repeated cell cultivation and harvesting was required, as the cells preserved from a single batch served as a continuous source for activity measurements. Many other microbial cultures can be preserved by this method and the cells preserved in the form of immobilized dried cell-matrix can be used directly to perform enzymatic tests, complex biochemical conversions and for production in the reactors. The dried cell-matrix can serve as a stable interchangeable component for a multipurpose biosensor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327847
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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