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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 98 (1993), S. 6102-6120 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The resonant two-photon ionization spectra of the first benzene–Arn (n≤8) clusters are interpreted in the light of a model calculation, including local energy minima determinations and Monte Carlo simulations. Based on spectral shift information, two types of structures are distinguished: the argon cluster either only solvates one side of the substrate molecule or covers simultaneously both sides. The "wettest'' structures are assigned to sandwich-type forms for n≤4 and to clamshell-type forms beyond. Such a 2D–3D transition in the n=5–8 size range is shown to be specific to small substrate size. In the one-sided forms, the argon cluster geometry is strongly influenced by the presence of the Bz molecule since it adopts a quasiplanar geometry, more or less tightly bound to the substrate depending on its size: the small argon clusters exhibit two types of complexation sites (c and s forms) which are simultaneously visited (surface decoupling) even at low temperature (∼7 K). As the size increases, the c form becomes prevalent and the surface decoupling becomes inhibited. At n=8 a 2D–3D transition is observed: beyond the n=7 species, characterized by a caplike close-packed structure, the one-sided conformers disappear in favor of bridged forms. Additional results on the ionization behavior of the one-sided species show regular variation of the ionization potential with the cluster size.
    Type of Medium: Electronic Resource
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  • 2
    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
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Inorganic chemistry 32 (1993), S. 5053-5057 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 96 (1992), S. 2404-2406 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 96 (1992), S. 4131-4133 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 35 (1994), S. 0 
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Abstract The predictive power of early visual attention in terms of later cognitive functioning was compared to standard developmental test scores and further early predictors of later development. In a longitudinal study of 226 infants at risk visual attention in a habituation-dishabituation paradigm was assessed at 3 months and cognitive development was measured at 3, 24 and 54 months. The results indicated that response decrement and response recovery measures are related lo cognitive outcome in later childhood, but failed to support their superiority over standard developmental test scores or early biological and psychosocial predictors of later IQ. Methodological shortcomings of previous studies and theoretical weaknesses of the habituation concept were discussed as a possible explanation.
    Type of Medium: Electronic Resource
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  • 7
    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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  • 8
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 8 (1975), S. 47-49 
    ISSN: 1432-0630
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have measured the stress distribution at He temperature on two epitaxial GaAs wafers which were compressed along one edge. The stress was determined non-destructively at different points on the wafer surface by using the line-splitting and the lineshifts of the photoluminescence spectra of the acceptor-bound excitons in comparison with calibration spectra at known uniaxial stress.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European child & adolescent psychiatry 3 (1994), S. 267-276 
    ISSN: 1435-165X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La psychose schizophrène atteint les hommes en moyenne 4 à 5 ans plus tot que les femmes bien que le risque de contracter la maladie durant leur vie soit le meme pour les deux sexes. Comme cette observation n'a pas été confirmée ni pour l'enfance ni pour l'adolescence, ce travail a pour objet d'examiner cette question en comparant les données de la litérature et les résultats d'une étude réalisée à Mannheim. Parmi les 28 publications revisées, il y avait huit études qui ont utilisé des critères diagnostiques standardisés en se limitant à l'age de 11 à 18 ans. Ni l'analyse de ces huit publications ni les résultats de l'étude de Mannheim ne mettent en evidence l'existence d'une affection précoce des adolescents schizophrènes masculins. Differentes raisons, qui peuvent expliquer ceci, sont envisagées.
    Abstract: Zusammenfassung Bei gleichem Lebenszeitrisiko erkranken erwachsene Männer durchschnittlich 4–5 Jahre früher als Frauen an einer schizophrenen Psychose. Ob dieser Befund auch für das Kindes- und Jugendalter zutrifft ist unbekannt und soll in der vorliegenden Untersuchung mittels Daten aus der Literatur sowie einer eigenen Studie (n=118) überprüft werden. Von insgesamt 28 Studien verwendeten nur acht operationalisierte Diagnosekriterien und beschränkten sich auf den Altersbereich 11–18 Jahre. Weder aus den Daten dieser acht Studien noch aus der Mannheim-Studie ergaben sich Hinweise auf ein früheres Erkranken der männlichen schizophrenen Jugendlichen. Mögliche Gründe werden diskutiert.
    Notes: Abstract Schizophrenia in male adults starts on average 4–5 years earlier than in females. The lifetime risk for both sexes is equal. It is still unknown, whether this observation is also valid for children and adolescents. This question was examined in the present study by means of data from the literature and a study of our own (n=118). From a total of 28 studies, only eight used standardized diagnostic criteria and confined the age range from 11 to 18 years. Neither the data of these eight studies nor those of the Mannheim-Study indicate an earlier onset of schizophrenia in male adolescents. Possible reasons are discussed.
    Type of Medium: Electronic Resource
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