Your search
Results 2,525 resources
-
NSPI JournalVolume 9, Issue 2 p. 6-19 Article The development of a programmed text for African Pupils† David G. Hawkridge, David G. Hawkridge Director of the Applied Educational Sciences Unit of the Open University, near London, England David g. Hawkridge has been directing national evaluation surveys of compensatory and vocational education for USOE at the American Institutes for Research in Palo Alto during the past two years, but he has continued to publish papers on educational...
-
Essay| March 01 1970 Storm Clouds Over the African Horn Keith Irvine Keith Irvine Associate Editor, Encyclopaedia Britannica Keith Irvine, who was Research Officer of the Ghana Mission to the United Nations from 1959 to 1969, is a frequent contributor to Current History. He is the author of the forthcoming book, The Rise of the Colored Races (New York: W. W. Norton). Search for other works by this author on: This Site PubMed Google Scholar Current History (1970) 58 (343): 142–147....
-
1. In rats and guinea‐pigs a subcutaneous or intraperitoneal injection of capsaicin, the substance responsible for the pungency of red pepper, produces profound hypothermia associated with skin vasodilatation. 2. After large doses of capsaicin rats and guinea‐pigs become insensitive to the hypothermic action of capsaicin. This densensitization is apparently irreversible since it is present months after the capsaicin treatment. 3. Capsaicin‐desensitized animals are no longer able to protect...
-
1. Children attending a boarding school in the New Guinea highlands, and receiving a protein-deficient diet of sweet potato and taro showed, when compared with village children, a progressive retardation of growth which was related to the number of years at school. 2. Feeding of supplementary protein resulted in a dramatic acceleration of growth in both height and weight, whereas the feeding of extra calories produced an increase in only weight and skinfold thickness. 3. This response to...
-
Summary Quartz-trachytic differentiates characterise volcanic islands on or near mid-ocean ridges, while phonolitic trends are found on islands rising from ocean basins. A large part of the Kenya Rift Valley is dominated by Plio-Pleistocene quartz-trachytes, which are underlain and flanked by variably nepheline-rich Miocene and Plio-Pleistocene lavas. Phonolitic and nephelinitic lavas dominate the assemblages of Miocene age, trachytes and olivine basalts those of Plio-Pleistocence age. This...
-
Population planning is as important as economic planning and should be applied both at the national and personal levels. Population control and socioeconomic development are intrinsic to each other. Proverty, illiteracy, political instability, and social retardation are found in the countries with high birth rates. Most African nations tend to think of the population in terms of density rather than growth potential. Family planning programs should be accorded the same priority as...