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Mt Cameroon is an active basanite composite volcano on the West African coast which has erupted five times this century, the latest in October/November 1982. An interesting aspect of Mt Cameroon region seismicity is the regular occurrence of deep, near-constant magnitude, low-frequency microearthquakes near the volcano. The near-regularity of occurrence of these limited magnitude range microearthquakes in a relatively small area, and the closeness of the region to the equator, where tidal...

Estimates of source parameters (seismic moment, source radius and stress drop) for a representative sample of 33 Mt Cameroon region microearthquakes, with magnitudes in the range MD = 0.8–2.8, have been obtained from the analysis of their far-field displacement amplitude spectra. The spectral character of these events seems to be characterized by a lack of high frequencies. The computed seismic moments lie between 1011 and 1011 N m and vary linearly with magnitude, albeit with some scatter....

Abstract In Algeria, as in many other places, the lack of reliable macroseismic and instrumental information makes the study of long-term seismicity difficult. The earthquake of 24 June 1910 provides an example of these difficulties, and demonstrates the uncritical way in which such information is often used in the preparation of earthquake catalogues. This earthquake, with a magnitude ( M s ) of 6.6. is equal in size to the Orleansville (El Asnam) earthquake of 9 September 1954, and is the...

The paper reviews the state-of-the-art papers and posters on water pollution in Eastern Africa presented during the symposium.

Central to the curriculum of the University of Ilorin's medical school is the Community-Based Education and Service (COBES) program. This program is consistent with the emphasis of the government health care system on primary health care services targeted at problems such as poor nutrition, parasitic disease, and infection, especially among mothers and children. The CORES program, instituted in 1978, places medical students in both urban and rural clinics to impart awareness of the unique...

Once they are in an Integrated school, visually handicapped pupils become members of groups of age-mates, usually within the same class The purpose of the present pilot study was to examine the pattern of friendships of three blind pupils in grade 12N of a prestigious secondary school in Zambia The conclusion reached is that functional interaction does not guarantee social interaction, and that the needs of the visually handicapped pupils may be construed by their sighted peers as...

This article proposes age and gender as a way of classifying music; it raises awareness of the importance of age–gender classifications of West African musics; and introduces examples of West African musics. It is argued that the classifications could help in selecting musics for curricular use: they could be used as a framework to choose African musics for school curricula; while the musical examples may be of some use to teachers. Three curricular perspectives – musical, intercultural and...

Developing nations like Ghana, cannot afford to adopt a “wait to see” policy with their water environment. We must develop and/or strengthen infrastructure needed to maintain a healthy environment. In our eagerness to industrialize, care must be taken not to repeat mistakes of industrialized nations. Water quality monitoring activities should be streamlined and properly coordinated to develop good pollution control measures. We must research into and provide pollution control alternatives suitable for our particular environment.

The “Lisbon” earthquake of November 1, 1755, the effects of which have been described at length in the Iberian Peninsula, was likewise strongly felt in Morocco, especially on the Atlantic coast, which was laid waste not only through the direct agency of seismic waves, but also through that of a formidable tsunami. The study of these effects in Morocco, based on a critical analysis of European and Arab sources entailing, whenever possible, a consultation of the original sources, has lead to...

Since dust storm frequency in the African Sahel is considered an indicator of drought phases, this paper points out basic interrelations of annual and interannual dust storm, rainfall and temperature variability in the region, as well as some large-scale patterns of atmospheric control. The normal seasonal pattern is characterized by a temperature maximum in June/July, a rainfall maximum in August, and a dust storm maximum in April which is linked to a negative soil water budget towards the...

Critical accumulation of cellular calcium in ischaemic myocardium is involved in irreversible cell damage. In human right atrial trabeculae and in rat and guinea-pig left atria, we investigated whether direct calcium overload by increasing the extracellular calcium concentration, [Ca2+]o, leads to similar impairment of function and ultrastructure as observed after ischaemia. The force of contraction was measured during two consecutive cumulative increases in [Ca2+]o (1-25 mmol/l) separated...

Botswana is at the moment industrializing and developing rapidly due to favorable economical conditions. Unfortunately, this development has also some negative impacts. Pollution hazards are increasing and more systematic and sound approach to pollution control is needed. Recently the new strategy for water pollution control was developed. Several areas of development were identified. Actions plans are based on rather practical and pragmatic approach with parallel activities in several areas...

Between August 1986 and July 1989, a total of 70 patients (M:F = 1:6) with thyrotoxicosis were prospectively studied at a weekly endocrine clinic of Tikur Anbessa Teaching Hospital (T.A.H.) in Addis Ababa, Ethiopia. 39 patients (55.7%) had Graves' hyperthyroidism, 20 (28.6%) had toxic multinodular goitre while the rest had toxic adenoma (7.1%), Jodbasedow phenomenon (5.7%) and thyroiditis (2.9%). The mean age was 29.4 +/- 9.8 years for Graves' cases and 48.0 +/- 10.9 years for toxic...

This paper examines the relationship between parental education and child mortality in Burundi using data collected in the 1987 Demographic and Health Survey. Proportional hazards models are estimated to examine this relationship, while holding constant other known child mortality determinants. Parental education proves to be a key factor in explaining differences in child mortality, the effect of maternal education being particularly strong compared to paternal education.Data collected in...

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Studies indicate that teaching has become a complex and demanding task it lies within the cognitive, affective and psychomotor domains. Because .of' itscomplexity and demanding nature, the teaching profession requires people with moral, physical · and intellectual qualities, and professional competence,which can only be acquired through special training. It is the responsibility of specific training establishements to provide this. Regarding the preparation of' senior secondary School...