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  • 1990-1994  (3)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 26 (1992), S. 266-275 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Social psychiatry and psychiatric epidemiology 29 (1994), S. 165-171 
    ISSN: 1433-9285
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Using prospective data on 3,170 respondents aged 18 years and over who were at risk for a first-onset major depression from the New Haven site of the Epidemiologic Catchment Area (ECA) study, these analyses assessed the effects of social status, physical health status, and social isolation on first-onset depression in a 1-year. period, controlling for demographic characteristics and baseline psychiatric factors. Among the assessed potential risk factors, poverty status [odds ratio (OR=2.034,P〈0.05)] and confinement to a bed or chair (OR=4.015,P〈0.05) were independently associated with an increased risk for a first-onset depressiveepisode when controlling for gender, age, past history of substance abuse, and subclinical depressive symptoms. The effects of poverly, and to a lesser degree homebound status, were substantially reduced when controlling for degree of isolation from friends and family, suggesting that social isolation mediates some of the relationships between social and physical statuses and major depression.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The gross morphological changes in the salivary glands ofIxodes ricinus (L.) were investigated at the light microscopic level in various phases off the host with emphasis on the engorged nymph, in order to relate the capability of active vapour uptake in the course of postembryonal development to degeneration and regeneration of salivary-gland alveoli. Agranular alveoli in engorged immatures ofI. ricinus, from detachment to the following early pharate phase, do not appear different from those of the unfed instars. This is also true for the female up to approximately the end of oviposition. During moulting, the agranular alveoli of the immatures degenerate and new ones are formed which are apparently already functional in teneral nymphs and adults. In contrast, granular alveoli, much enlarged in freshly detached immatureI. ricinus, shrivel in the early post-repletion period and soon reach a highly reduced state which is maintained until apolysis. Subsequently, they disintegrate completely. The finding that engorged and detached immatures ofI. ricinus with markedly atrophied granular alveoli are capable of active vapour uptake until some days after initiation of apolysis suggests that only agranular alveoli are responsible for producing the primary secretion involved in vapour uptake.
    Type of Medium: Electronic Resource
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