Horizontal tube-side condensation of steam in the presence' of a non-condensable gas.

An apparatus was constructed for experimental work on condensation of steam-air mixtures in a horizontal tube.The effects of inlet fluid temperature,air mass concentration and tube diameter on the rate of condensation were investigated. It was found that condensation heat transfer coefficient drops by approximately 50% within an air mass of 3% and there after the drop in the heat transfer coefficient became gradual. For fixed air mass concentration and inlet fluid temperature, the heat transfer coefficient increased with a decrease in tube diameter.

The development of Islam in Kendu-Bay from 1912 to 1992

This study traces the development of Islam in Kendu-Bay from the beginning of the 20th century to 1992.

Analysis of 'staygreen' characteristics associated with drought tolerance in cassava (manihot esculenta crantz) under greenhouse conditions

Cassava (Manihot esculenta Crantz) ranks as the fourth most important staple food cultivated and consumed mainly in the tropics and other developing countries. The crop yields well in areas with uncertain rainfall patterns and prolonged drought. Leaf retention or longevity (staygreen) has been associated with sustained cassava production under drought. This study analyzed and screened for this characteristic in both transgenic and non transgenic cassava genotypes under greenhouse conditions.

Feeding practices for children aged 0-24 months and feeding alternatives for those born to hiv positive mothers and their association with nutritional status: a case study of Kisii district Hospital -Kenya

Poor breastfeeding and infant feeding practices have adverse effects on the health and nutritional status of children, HIV being one of the major confounding circumstances in infant feeding. Against the backdrop of this realization, efforts are therefore required to protect, promote and support appropriate infant feeding practices. The study was designed to assess the infant feeding practices and feeding alternatives available for children of the untested mothers and those born to HIV positive mothers, and the factors determining choice of infant feeding alternatives.

Sesame (sesamum indicum l.)response to nitrogen and phosphorus fertilizers as influenced by mycorrhizal infection

Response of sesame to varying rates of nitrogen (0, 100, 200 and 300 kg ha"), phosphorous (0, 50, 100 and 200 kg ha') and farmyard manure (0, 3, 6 and 9 Tonnes ha') was studied in a series of experiments conducted at University of Nairobi's Kibwezi dryland field station and at Siaya Farmers Training Centre (F. T. C.) during the short rains of November 1993 to February 1994 and the long rains of April 1994 to July 1994.

Rainfall characteristics for planning maize production in Swaziland

The estimation of missing climatic data was done using the arithmetic mean method. It is important to ascertain the homogeneity of any meteorological data before such data are used in any research work. To investigate whether the data sets were homogeneous or not, the mass curve method was employed. Two graphical methods, the cumulative and the effective methods were used to determine the times of onset and cessation of the rains in the growing season for the four agro-ecological regions namely; Highveld, Middleveld, Lubombo Plateau and the Lowveld.

Sediment yield studies in the Mathare River catchment

The Mathare catchment comprises an area of 26 Km2 and is located in the Western suburbs of Nairobi, Kenya. It is currently fitted with instruments for both rainfall measurement and runoff gauging at the Kabete field station. For the purpose of sediment gauging, a bridge was constructed for sediment sampling; two sets of staff gauges installed and a steel container erected for storage of equipment.

Characterisation of the soils of Mashuru area with respect to their genesis and classification

Soils are a component of the ecosystem vital for the maintenance of the land-based life-support systems and hence, reliable soil information is essential in planning for sustainable development and environmental conservation. Nevertheless, reliable soil information required for development planning is scarce. A semi- detailed soil survey of an area in Mashuru division, Kajiado district was conducted with the principal objective of mapping and characterizing the soils. Specifically, the morphology, mineralogy, physical and chemical properties of the soils were studied.

Effect of Farmyard manure on soil surface sealing and crusting of disturbed topsoils - a case study of West Pokot, Kenya

The effects of two farmyard manure application rates (5 and 10 t ha-1) on infiltration, runoff, soil loss and soil crust strength of four disturbed topsoil samples from luvisols (FAD/UNESCO, 1974 classification) were investigated under laboratory conditions for 60 days. The experiment was conducted in three experimental phases of 20 days each. The four topsoil samples were packed in soil trays and subjected to simulated rainfall of a constant intensity of 360 mm h-1 for three minutes on four consecutive days.

Participatory epidemiology of common diseases with special reference to cryptosporidiosis in dairy calves and children attending health facilities in Malindi district, coast province, kenya

Cryptosporidium is an important parasite that causes a potentially life-threatening disease in immunocomprornised individuals worldwide. The disease also contributes significantly to morbidity among calves and children in developing countries. Diagnosis of infection with this parasite was previously based on identification of acid-fast oocysts in stool; however, of late immunoassay techniques and peR-based assays have been used to increase the sensitivity of detection. The organism is a major public health concern as its oocysts are resistant not only to common antiseptics.


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