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  • Electronic Resource  (3)
  • 1990-1994  (3)
  • 1975-1979
  • 1991  (3)
Material
  • Electronic Resource  (3)
Years
  • 1990-1994  (3)
  • 1975-1979
Year
  • 1
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An apparatus is described for the measurement of photo processes in mass-selected cluster ions. A gridless reflectron type of time-of-flight (TOF) mass spectrometer is used to select an ion of known mass. The selected ion is photoexcited with a pulsed dye laser. The charged fragments are mass separated in a second linear TOF. A new combination of reflectron and linear TOF is described, which allows one to measure the complete photofragment mass distribution over an arbitrary large mass range for each laser shot, which was not possible earlier. It is discussed how clusters with different temperatures can be prepared. The first measurement of a temperature-dependent effect for mass-selected free cluster ions is presented.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 32 (1991), S. 0 
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Abstract– The well known association between child and adolescent psychiatric disorders and chronic adversities was proved in a field sample. Children (356) were investigated at the ages of 8 and 13 years. The association between child psychiatric disorders and chronic adverse conditions in the familial environment—measured by the FAI—was analysed with respect to the variables: age, sex, psychiatric diagnoses, and course (stability) of disorder. The FAI proved to be predictive of psychiatric disorder, in particular of early onset disorder, of disorders in boys, and of conduct disorders. According to the results, the common assumption that chronic adversities cause child psychiatric disorders must be viewed cautiously.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 341 (1991), S. 412-415 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Adsorption of amino acids from aqueous solutions on TiO2 surfaces as a function of pH is monitored quantitatively by X-ray photoelectron spectroscopy (XPS). Because of the amphoteric character of the TiO2 and the “zwitterionic” behaviour of the amino acids the pH of adsorption indicates what chemical groups are involved in the adsorption reaction. The results confirm the ligand exchange model: in acidic milieu the carboxylic group replaces a basic surface hydroxyl group on a Ti site and binds to this Ti. For homocysteine the resulting position of the adsorbed molecule can also be concluded by comparing peak intensities.
    Type of Medium: Electronic Resource
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