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Aflatoxins B 1 , B 2 , G 1 and G 2 , highly toxic mycological metabolic products occurring as food contaminants, were capable in minute quantities of causing delayed hypersensitivity in guinea pigs. Structurally related compounds, sterigmatocystin (a mycotoxin), coumarin, 8-methoxypsoralen and furazolium chloride were also equally or more active in causing delayed hypersensitivity in guinea pigs. Animals which were strongly sensitized to aflatoxin B 1 showed cross-reactivity to other...
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Economic RecordVolume 46, Issue 4 p. 497-516 The Private Demand for Education in New Guinea: Consumption or Investment?* J. D. CONBOY, J. D. CONBOY University of Papua and New GuineaSearch for more papers by this author J. D. CONBOY, J. D. CONBOY University of Papua and New GuineaSearch for more papers by this author First published: December 1970 https://doi.org/10.1111/j.1475-4932.1970.tb02508.xCitations: 8 *The writer is indebted to the Myer Foundation for financial assistance which made...
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Based on past experience in adult education (largely literacy education) in Tanzania, a new approach is suggested. Adult education activities should be organized around skills which are reinforcing in their own right, such as masonry, mechanics, carpentry, or vegetable growing, and with immediate use in the post-training environment. Literacy teaching should be a follow-up and not a first step. Initially all teaching of illiterates should be by auditory means; having got the people involved...
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Summary An adaptation of Friedman's dilatation‐time curve (mean curve of labour) was used in Uganda to help medical students recognize abnormal labour. A printed form allowed all important aspects of labour to be recorded at regular intervals. Students were expected to predict the time of delivery, based on the normal sigmoid curve. At weekly seminars these records were analyzed and students quickly learned to detect protracted labour and to determine the cause. While especially helpful in...
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(1970). Primary School Curriculum Development in Africa—Hopes and Facts. Journal of Curriculum Studies: Vol. 2, No. 2, pp. 108-117.
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The schools part in the process of health education with respect to family planning was evaluated with regard to: 1)teachers knowledge of human reproductive physiology demography and family planning and 2)positive teacher attitude towards the objectives of the national family planning program. Meetings were held throughout the district and results showed the majority of the headmasters questioned did not have sufficient knowledge of human reproductive physiology to teach the subject...
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Abstract Hepatic disposition of sulfobromophthalein sodium (BSP) was studied in newborn guinea pigs from the second to the sixteenth day of life after intravenous administration of doses of unconjugated and conjugated dye sufficient to achieve maximal rates of dye excretion into bile. Neonatal guinea pigs injected with unconjugated BSP showed a marked reduction in the maximal rate of dye excretion into bile when compared to adult animals given comparable weight-adjusted doses of unconjugated...
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Journal Article The Political Dilemma of Popular Education: An African Case, Patterns of Dominance, Educational Problems of Developing Societies: With Case Studies of Ghana and Pakistan and Language Problems of Developing Nations Get access The Political Dilemma of Popular Education: An African Case. By David B. Abernethy. Stanford, Calif.: Stanford University Press. 1969. 357 pp. Bibliog. Index. 95s.Patterns of Dominance. By Philip Mason. London, New York, Toronto: Oxford University Press...
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Our understanding of educational processes is often obscured by ideological considerations. This is very well illustrated in the common term, ‘assimilation’, used to characterise European colonial policy towards Africa. Thus it is often asserted that French authorities promoted the emergence of a class of ‘black Frenchmen’, with values, aspirations, and cognitive styles analogous to those of European educational institutions. In contrast, the British have been viewed as repudiating such a...
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Journal Article Ultrabasic Xenoliths and Lava from the Lashaine Volcano, Northern Tanzania Get access J. B. DAWSON, J. B. DAWSON 1Department of Geology, University of St. AndrewsScotland Search for other works by this author on: Oxford Academic Google Scholar D.G. POWELL, D.G. POWELL 1Department of Geology, University of St. AndrewsScotland Search for other works by this author on: Oxford Academic Google Scholar A.M. REID A.M. REID 2Scripps Institution of Oceanography La JollaCalifornia,...
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American AnthropologistVolume 72, Issue 5 p. 1120-1121 Free Access ETHNOLOGY: Education since Uhuru: The Schools of Kenya. Ernest Stabler Philip Foster, Philip Foster University of ChicagoSearch for more papers by this author Philip Foster, Philip Foster University of ChicagoSearch for more papers by this author First published: October 1970 https://doi.org/10.1525/aa.1970.72.5.02a00310AboutPDF ToolsExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text...
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British Journal of Educational TechnologyVolume 1, Issue 3 p. 217-225 Programmed Learning in Africa, 1963–1969 David Hawkridge, David Hawkridge Dr Hawkridge is Director of the Institute of Educational Technology at the Open University.Search for more papers by this author David Hawkridge, David Hawkridge Dr Hawkridge is Director of the Institute of Educational Technology at the Open University.Search for more papers by this author First published: October 1970...
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Previous aerosol studies have shown that large quantities of dust are often present in the trade winds entering the Caribbean area; indirect evidence suggested that this material was derived from arid regions in Africa. We report here on a dust event which we observed at Barbados on June 12, 1967, and which we have traced to a dust storm covering a large area of West Africa on June 7, 1967; the storm is clearly visible in an ESSA 5 satellite photograph. The composition of the dust from this...