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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of science education and technology 2 (1993), S. 435-443 
    ISSN: 1573-1839
    Keywords: Bilingual higher education ; limited English proficient undergraduates ; science education ; second language acquisition ; college science ; minorities in science ; adjunct model ; tutorial model ; sheltered science
    Source: Springer Online Journal Archives 1860-2000
    Topics: Natural Sciences in General , Technology
    Notes: Abstract Between 1980 and 1990, the total number of Asian, Hispanic, American Indian, and foreign undergraduates increased by more than 50% at public and private, four-year and two-year colleges. Many of these students may be of limited English proficiency, suggesting that the traditional science lecture/lab format may need modification to incorporate the theory of second language acquisition as it pertains to the practice of content instruction. Various methods exist to improve science instruction for limited English proficient undergraduates. These included the adjunct and tutorial models, sheltered or bridge science instruction, faculty development, and science instruction in the students' native language. Any plan for science education reform at the collegiate level or for increasing minority participation in science must address the needs of the growing population of undergraduates who speak English as a second language.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 85 (1975), S. 235-242 
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Studies were carried out on confluent cultures of human fibroblasts to explore the effect of insulin on basal and hormone-induced elevations of intracellular cyclic AMP content during short-term incubations in serum-free medium. Insulin tended to decrease basal levels of cyclic AMP but this was not statistically significant. Similarly, insulin was unable to block the elevations of intracellular cyclic AMP content induced by PGE1, epinephrine and glucagon. Paradoxically, when cells were preincubated with insulin, PGE1-stimulated cyclic AMP elevation was potentiated, possibly because insulin was conserving factors needed for a maximal PGE1 stimulus or retarding the leakage of cAMP itself. The results indicate that insulin has little or no direct effect on cyclic AMP metabolism in cultured human fibroblasts and is consistent with the known insensitivity of these cells to insulin for other parameters.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 1975-04-01
    Print ISSN: 0021-9541
    Electronic ISSN: 1097-4652
    Topics: Biology , Medicine
    Published by Wiley
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