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  • Chemistry  (1)
  • oscillation  (1)
  • Nuclear reactions
  • Post-translational processing
  • Arylsulfatase
  • Protein sequence
  • Membrane vesicle release
  • 1990-1994  (2)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Influence of dry operating conditions: observation of oscillations and low temperature CO oxidation over Co3O4 and Au/Co3O4 catalysts (1994)
    Springer
    Catalysis letters 25 (1994), S. 257-264 
    Details
    ISSN: 1572-879X
    Keywords: Co3O4 ; gold ; CO oxidation ; oscillation ; moisture effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The effect of dry operating conditions upon the oxidation of CO over Co3O4 and Au/Co3O4 has been studied. Under dry conditions (with pretreatment and reaction gases dried at −76°C using molecular sieve traps) oxidation of CO over Co3O4 can be observed at temperatures as low as −54°C. However, without sufficient drying Co3O4 rapidly deactivates. On the other hand, the Au/Co3O4 catalyst is resistant to the presence of moisture even at low temperatures. For both the Co3O4 and Au/Co3O4 catalytic systems, strong and periodic oscillations in percentage conversion and catalyst bed temperature have been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00816305
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  • 2
    Electronic Resource
    Electronic Resource
    On-line combination of supercritical-fluid chromatography with fast-atom bombardment mass spectrometry (1990)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 4 (1990), S. 381-383 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Studies on combined supercritical-fluid chromatography (SFC) using a packed column, with fast-atom bombardment mass spectrometry (FAB-MS) are described. The interfacing was successfully carried out by simply coupling a frit interface between the liquid chromatograph (LC) and the mass spectrometer. The interface was equipped with a pneumatic splitter and post-column addition device delivering FAB matrix material to a release valve which maintained a constant back-pressure at the column outlet. Using a 1% glycerol solution as a matrix compound in the release valve, the SFC/FAB-MS combination operates as well as a normal LC/MS instrument. The performance was demonstrated with a mixture of α-, β- and γ-tocopherol and Triton X-100 (poly(ethylene glycol) p-isooctylphenyl ether).
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290041007
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    Paper (German National Licenses)
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