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Information on the type and quantity of industrial pollutants from major land-based sources entering the marine environment through direct coastal discharges or indirectly through rivers, as well as on the present status of industrial waste management (treatment and disposal) practices, are provided for the West African region. Most of the data utilized in this analysis were collected by six UNIDO experts who visited the eighteen countries of the West African region during the period of...
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ABSTP.ACT: The African clawed frog, Xenopus laevis, was studied in experiments designed to examine the effect of daily repetition of a locomotor task on the time required to perform that task. Frogs forced to swim a 1.5 m sprint on 18 consecutive days decreased the time required to swim that distance during the first few days of training to 70% of the initial value. Frogs forced to swim 51 m on 56 consecutive days decreased the time required to swim that distance an average of 0.72 s d-1. By...
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ABSTP.ACT: The African clawed frog, Xenopus laevis, was studied in experiments designed to examine the effect of daily repetition of a locomotor task on the time required to perform that task. Frogs forced to swim a 1.5 m sprint on 18 consecutive days decreased the time required to swim that distance during the first few days of training to 70% of the initial value. Frogs forced to swim 51 m on 56 consecutive days decreased the time required to swim that distance an average of 0.72 s d-1. By...
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The levels of the heavy elements cadmium, copper, cobalt, iron, manganese, nickel, lead, and zinc in the major streams and man-made lakes in and around Ibadan City were determined at roughly two monthly intervals between August 1977 and February 1979. They were found to be in the ppb and sub-ppb level except for iron and manganese which were in the ppm range. To assess the quality of these waters with respect to heavy metal contamination, a comparison is made between our results, world...
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In connection with an invasion of cold air from the north over the Sudan in April 1973, a major dust storm, or rather, a dust storm complex, passed over most of the Sudan. The weather development during this dust storm period is described and illustrated in detail with the aid of synoptic weather and visibility maps, as well as time sections based on SYNOP, METAR, and radiosonde reports from Sudanese meteorological stations. With the aid of the synoptic maps it has been possible to follow...
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This project is to develop an agricultural training school as part of a larger primary/secondary school complex for refugee children from Mozambique near Shamva in northeastern Zimbabwe. The end of the war and the coming of independence has left Zimbabwe with the task of reorienting old structures and institutions. This is particularly true in agriculture and education. Alternative models must be developed in order to provide the skills and experience necessary to rebuild the country along...
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This project is to develop an agricultural training school as part of a larger primary/secondary school complex for refugee children from Mozambique near Shamva in northeastern Zimbabwe. The end of the war and the coming of independence has left Zimbabwe with the task of reorienting old structures and institutions. This is particularly true in agriculture and education. Alternative models must be developed in order to provide the skills and experience necessary to rebuild the country along...
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The purpose of this paper is to discuss briefly the current reconstruction efforts in Zimbabwe. The historical roots of prevailing social problems will be outlined and, government attempts in addressing these problems, both now and in the future, will be reviewed. The emphasis will be factual rather than analytical, in the hope that the information provided will contribute to the formulation of solutions to the many problems facing the new nation of Zimbabwe. It is difficult to do justice to...
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The purpose of this paper is to discuss briefly the current reconstruction efforts in Zimbabwe. The historical roots of prevailing social problems will be outlined and, government attempts in addressing these problems, both now and in the future, will be reviewed. The emphasis will be factual rather than analytical, in the hope that the information provided will contribute to the formulation of solutions to the many problems facing the new nation of Zimbabwe. It is difficult to do justice to...
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Available in print form, Eat Africana Collection, Dr. Wilbert Chagula Library,(THS EAF LB1737.T3M9)
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Based on a sample of nearly 1,500 secondary school students in Bendel State, Nigeria, this study shows that students disapprove of most forms of drug use among their peers and that very few of them actually use drugs. No clear evidence emerged for the use of heroin, morphine and cocaine. One finds, however, that chlordiazepoxide (Librium) and diazepam (Valium) are among the most frequently used drugs. One important finding is that there is a kind of "coalescence of drug use" in which certain drugs tend to go together.