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(1989). Desegregating Schools in South Africa: The Case of The Catholic “Open” Schools. Discourse: Studies in the Cultural Politics of Education: Vol. 10, No. 1, pp. 87-101.

The suite of alkalic basalts and differentiates (hawaiites, mugearites and trachytes) erupted at Jebel Marra volcano, Sudan, provides an excellent opportunity to examine the differentiation history of mantle-derived magmas. Crystal fractionation exerts a control on major element compositions although variations in incompatible element and isotopic ratios among the more evolved volcanic rocks require open system behavior. The basement at Jebel Marra is compositionally unlike the basalts, with...

This study provides an analytical framework for the monitoring and evaluation of extension projects through an examination of the applicability of the training and visit (T&V) extension in Ethiopia. The field evaluation reveals the T&V system's effectiveness in disseminating innovations and increasing yields among contact farmers, upgrading extension agents' skills, and imparting valuable lessons for other extension systems in Ethiopia. At same time, the system's reliance on small groups of...

An epidemiological survey of intestinal helminthiases was conducted on 766 primary school children aged 5-16 years from Ile-Ife, Nigeria. On the basis of stool examinations, the prevalence of Ascaris lumbricoides, Trichuris trichiura, hookworm and Strongyloides stercoralis was 88.5, 84.5, 33.1 and 3% respectively. Intensity of infection was measured indirectly by egg counts for each species of helminth and also by counting worms passed after chemotherapy in the case of A. lumbricoides. The...

The drug and toxicology information service (DaTIS), at the Department of Pharmacy, University of Zimbabwe Medical School, was set up in 1979. The service is mainly delivered to health professionals and to a lesser extent to the community. The DaTIS is designed to help solve complex clinical questions. Most of the requests are made by telephone. Urgent questions may be initially answered by telephone, or a phone call can be returned after in-depth documentation. A complete answer with...

This article analyzes the effects offamily background on students' achievement in Third World countries and uses measures of social class that are both broader than previous work and more valid for developing countries. Study 1 examined panel data on the backgrounds and mathematics achievement of approximately 4,000 Grade 8 studentsfrom 99 schools in Thailand. Itfound thatfamily background and prior achievement affected students' educational expectations, perceptions of ability, and effort,...

The volcanic rocks from the Lake Kivu volcanic province (southeastern Zaire and Rwanda) are part of the western branch of the east African Rift system and were emplaced from early Miocene to sub-Recent times. The lavas are mainly of basaltic composition and range from quartz-normative tholeiites through alkali basalts and basanites to melilite nephelinites. They were derived from a heterogeneous upper mantle source by variable degrees of melting. The inferred source compositions are highly...

For over thirty years Birmingham University has offered training courses for teachers wishing to specialise in the education of the visually handicapped. In addition to a large national intake it has consistently attracted students from all parts of the world, with African countries very well represented. In the last three years for example, teachers from Botswana, Ethiopia, Kenya, Malawi, Mali, Nigeria and Tanzania have attended the one-year full time course. In 1986 a tutor was appointed...

Prior to 1956 As has happened throughout the world, environmental and pollution problems related to developing towns and industries and the associated accumulation of waste in built-up areas were the main factors that contributed to sanitary awareness in this country. Initially the control of water pollution in South Africa was closely associated with the development of sewage disposal methods and practice. In a development similar to that in many other countries, bucket sanitation systems...

The ancient Egyptians knew many of the therapeutical effects of the medicinal plants. This knowledge was taught at home from father to son. So, these houses formed the first primitive pharmacy and medicine schools. Century after century, the ancient Egyptians became more and more interested in medical sciences. Temples began to establish medical and pharmaceutical schools. Priests of good and honest character with scientific background were chosen to become teachers and professors in these...

A survey of body lice in three different altitudinal zones of Ethiopia was conducted. The survey population consisted of primary school children of both sexes ranging in age from 6-25 years. The areas of study were Gambela, Kemise and Debre-Berhan. Only 33.2% of the school children were found to be free from infestation and the rest, 66.8%, harboured body lice ranging in number of 1 to 598. The prevalence in Debre-Berhan (76.2%) was found to be significantly higher (p less than 0.001) than...

Unplanned pregnancies are of great concern to the government of Zimbabwe. In Zimbabwe, at least 1/3rd of the women (15-19 years) had been pregnant at least once; and only 27% of married Zimbabwe women use some form of contraception. Various North American researchers believe that erotophobia (negative feelings about sex) is in some way responsible for increase sexual relations and lack of concern over contraception. A study was conducted on 178 Zimbabwean students (104 males, 74 females),...

The Wodaabe of Niger are pastoral ‘nomads’ inhabiting the West African Sahel, a region characterised by low and uncertain rainfall. Drought poses a recurrent threat to the well-being of livestock and adaptations to seasonal, year-to-year and long-term cycles of drought permeate Wodaabe economics and social organisation. The first part of this chapter explores traditional Wodaabe mechanisms for coping with drought. Responses to individual years of low rainfall are often an extension of...

Abstract In this study American preservice science TEACHERS' responses on Kimball's Nature of Science Survey (NOSS) were used as a basis for analyzing the sense of the nature of science held by a group of Nigerian preservice science teachers. From an item‐by‐item comparison two salient differences were noted. These differences are quite interesting and important, and one would expect to see replication attempts in the near future. The primary difference was that the Nigerian students were...

Fertility and pregnancy outcome among 141 Nigerian women with uterine leiomyomas and 270 married gynaecological subjects matched for age and parity were studied. The preoperative spontaneous abortion incidence and fetal salvage among the 68 women in the study group who had previously been pregnant were 61.8% and 78.8%, respectively. Corresponding figures among women in the comparison group were 5.3% and 95.6%. Macroscopic evidence of pelvic sepsis was found at operation in 36.2% of all the...