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  • 1990-1994  (3)
  • 1970-1974
  • 1991  (3)
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  • 1990-1994  (3)
  • 1970-1974
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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 95 (1991), S. 6261-6270 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The excited state dynamics of the indole(Ar)1, indole(d1)(Ar)1, indole(Ar)2, and indole(CH4)1 van der Waals clusters have been investigated in a free jet expansion. Excited state vibrational frequencies were determined using multiphoton ionization and fluorescence excitation spectroscopy. Time resolved emission spectroscopic techniques were used to determine vibrational predissociation rates and product state distributions. All of the clusters were found to predissociate when excited with sufficient vibrational energy in the S1 state. The predissociation dynamics were found to be consistent with a serial model in which energy transfer from the indole skeletal modes to the van der Waals modes precedes the dissociation step. The density of van der Waals vibrational states was found to be the most important factor in determining the predissociation dynamics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Social psychiatry and psychiatric epidemiology 26 (1991), S. 245-251 
    ISSN: 1433-9285
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Findings for unselected samples of the elderly in two urban populations — one in Mannheim, Germany (n=418) and the other in Sao Paulo, Brazil (n=111)-are compared and contrasted. Each study was restricted to persons aged over 65 years living in private households, and each employed a single-stage method of psychiatric case-identification, based on the Clinical Interview Schedule (CIS). Apart from marked differences in educational standards and proportions living alone the two samples were broadly similar in their recorded socio-demographic characteristics. Comparison revealed no significant difference in total prevalence, though there was a trend towards a higher case-frequency in Sao Paulo (29.7%) than in Mannheim (23.3%). The clinical-item profiles for the two samples indicated a higher rate of symptom reporting in Sao Paulo, whereas the Mannheim sample had higher mean scores for a number of psychiatric abnormalities observed at interview. Separate cluster analyses carried out on the two data sets divided the samples into four pairs of sub-groups with similar clinical profiles, which were designated respectively as ‘organic’, ‘depressive’, ‘neurotic’ and ‘normal’. While a more careful standardization of method would probably reduce the observed disparities between the samples, some of these are thought to be real and to relate to sociocultural differences, as well as to the greater stresses of daily life in Sao Paulo.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The urban review 23 (1991), S. 101-115 
    ISSN: 1573-1960
    Source: Springer Online Journal Archives 1860-2000
    Topics: Education
    Notes: Abstract Proponents of private schooling claim that private high schools, on the average, more effectively promote measured academic achievement than public high schools. They have also argued that private high schools increase high school completion rates and improve college enrollment rates among high school graduates. Their antagonists, typically, hold that there is little or no difference between public and private high schools with respect to any of these outcomes. We address two of these school effectivenes issues by applying multiple-regression analysis to two SAT data sets for Florida and a national SAT data set. We ask whether there are differences between public and private high schools in promoting achievement as measured by the high-profile SAT verbal and math tests. At the same time, we are asking, at least implicity, if either public or private high schools provide an SAT soore advantage in promoting college enrollments. Our analysis finds a consistent advantage for public high schools with respect to SAT math attainment. For high schools generally, however, it seems clear that school effects outweigh the impact of socially ascribed traits, such as race, ethnicity, gender, and social class.
    Type of Medium: Electronic Resource
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