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This paper discusses geologic models dealing with the formation of carbonatites from recent lavas of the Oldoninyo Lengai volcano, Tanzania. This paper also acts as a rebutal to an earlier writing which discussed potential flaws in the collection and dating of the carbonatites. The paper goes on to provide activity ratios from different carbonatites and discussion the lack of evidence for fractional crystallization in a olivine sovite magma.
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The pattern of use of khat (Catha edulis Forsk), alcohol, cigarettes and tranquillizers among 479 medical and paramedical students in a boarding college in northwestern Ethiopia was studied by an anonymous self-administered questionnaire. The survey coverage rate was 98.8%. The majority of students were males (82.6%) and their average age was 21.2 years. The prevalence rate of current use of alcohol, cigarettes, khat and tranquillizers was 31.1%, 26.3%, 22.3% and 7.7%, respectively. These...
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The selection procedure at one medical faculty in the RSA was investigated. Students were admitted to the M.B. Ch.B. course on the basis of school results. Four groups were studied: matriculants; those selected after completing the 1st year of a B.Sc. course; those who had completed a full B.Sc. course; and those who had experience and other qualifications after leaving school. The matriculants were by far the largest group and the analysis of their marks received emphasis. Students who...
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Four methods were used to learn about the sexual behavior, knowledge and use of contraception, and sexually transmitted diseases (STD) among 230 students aged 11-16 years in two bilingual schools in Yaounde. First, students discussed letters to an aunt explaining a teen's sexually-related problem. Premarital sex and the fear of STDs were at issue. Second, students filled in missing information on a line drawing relating to pregnancy. Most participants knew that a baby depends upon its mother...
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More than a year has passed since the second national meeting of the National Education Crisis Committee (NECC) and its articulation of the slogan ’People’s Education for People’s Power’ (1). Much has changed in this short time-span. The heady euphoria and fervour of last year, effectively nipped by severe state repression, has sobered into the realisation that not only is liberation not around the corner, but also that the NECCs proposed strategy of transformation from within state schools...
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Preface Foreword Bradford Morse Part I. Physical and Social Setting: 1. Global climate change and variability: effects on drought and desertification in Africa Eugene M. Rasmusson 2. some aspects of meteorological drought in Ethiopia Workineh Degefu 3. Drought and economic development in sub-Saharan Africa Michael H. Glantz 4. African pastoralism and poverty: some implications for drought and famine Michael M. Horowitz and Peter D. Little 5. Part II. Internal-External Perspectives: 5. The...
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The results of an assignment to examine local government finance and training in Benue State, Nigeria are presented in this case study. The financial and management techniques which need to be developed are discussed. A résumé of the financial and administrative condition is given and policy and organisational issues are discussed. Target areas — revenue, budgeting and accounts — are identified, as are training requirements and problems encountered.
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Research Article| March 01, 1988 Drought-related changes to geomorphologic processes in central Mali P. A. JACOBBERGER P. A. JACOBBERGER 1Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, D.C. 20560 Search for other works by this author on: GSW Google Scholar Author and Article Information P. A. JACOBBERGER 1Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, D.C. 20560...
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In this article the author describes the home‐based learning programme of the Zimcare Trust, which is directed by Lilian Mariga in Zimbabwe. The programme aims to help families living in rural areas, far removed from schools and services. He reflects on the lessons for services in developed countries.
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Abstract A survey of ecology teaching in randomly selected secondary schools in five States of Nigeria was undertaken. The survey led to identification and categorization of the major difficulties perceived by teachers in their teaching of ecology. The difficulties had to do with provision of appropriate training for teachers, syllabus difficulties, and problems of approach by the teachers themselves. The perceived difficulties served as a guide for making suggestions on how these difficulties might be overcome.