Browsing Faculty of Science & Technology (FST) by Title
Now showing items 1228-1247 of 4283
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The effect of temperature and gonadotropin on testicular steroidogenesis in Sarotherodon (tilapia) mossambicus in vitro
(University of Nairobi, 1983-04)Testes of sexually mature Sarotherodon mossambicus were incubated at 15, 22, 30, and 40° with (a) tritiated testosterone and (b) salmon pituitary extract. Formation of 11-keto- and 11β-hydroxytestosterone from the tritiated ... -
Effect of Temperature and Season on Food-transmission Activity of Three Ant Species as Shown by Radioactive Tracers
(Department of Zoology, University of Nairobi,, 1971)Investigations into the effect of temperature and seasonal changes on the food-transmission activities of three ant species (Formica polyctena, Lasius niger and Myrmica ruginodis) using radioactive P32were carried out at ... -
Effect of temperature on the life history parameters of noctuid lepidopteran stem borers, busseola fusca and sesamia calamistis
(University of Nairobi, 2014-10-06)The influence of temperature on the development, mortality, fecundity and life table parameters of two important noctuid African cereal pests, Busseola fusca and Sesamia calamistis was investigated under laboratory conditions. ... -
Effect of temperature on the phenology of Chilo partellus (Swinhoe) (Lepidoptera, Crambidae); simulation and visualization of the potential future distribution of C. partellus in Africa under warmer temperatures through the development of life-table parameters.
(University of Nairobi, 2014)Maize (Zea mays) is a major staple food in Africa. However, maize production is severely reduced by damage caused by feeding lepidopteran pests. In East and Southern Africa, Chilo partellus is one of the most damaging ... -
The effect of temperature on the rate of transmission of Theileria parva parva infection to cattle by its tick vector, Rhipicephalus appendiculatus
(1988)A steer was infected with Theileria parva parva Kilae stabilate; nymphal Rhipicephalus appendiculatus ticks were applied to its ears so that they completed repletion when the steer had a high piroplasm parasitaemia. The ... -
Effect of the cassava green mite, Mononychellus progresivus, on the development and reproduction of the introduced predatory mite, Phytoseiulus longipes (Acari: Tetranychidae; Phytoseiidae), at different temperatures
(© 2012 Systematic & Applied Acarology SocietySchool of biological sciences, 2012-11)The cassava green mite (CGM), Mononychellus progresivus Doresta allowed for a limited development of the predatory mite, Phytoseiulus longipes Evans at three experimented temperatures. When the predators were confined with ... -
Effect of the nymph prey density of the two spotted spider mite, Tetranychus urticae Koch on the consumption and reproduction rates of the predacious mite, Cydnoseius negevi ( Swirsiki & Amitai) in absence and presence of nymphs of Bemisia tabaci ( Genn.)
(University of NairobiSchool of Biological and Physical Sciences, 1999)Abstract Not Available -
The Effect of the Operational Parameters on the Draft Requirement of Ripping in a Sandy Clay Soil
(2016)This study set out to investigate the effect of operational parameters (i.e. ripping depth and operational speed) during a ripping operation on the draft requirement during ripping in a sandy-clay soil. Field experiments, ... -
Effect of thyroxine on the ultrastructure of the hypophyseal proximal pars distalis in Tilapia zillii
(University of Nairobi, 1975)The effects of exogenous L-thyroxine on the fine structure of the proximal pars distalis cells were examined in Tilapia zillii. In thyroxine-treated animals the thyrotrophic cells appeared marginally smaller and less active ... -
Effect of trichoderma harzianum and arbuscular mycorrhizal fungi on growth in tomato (lycopersicum esculentum mill) seedlings, napier (pennisetum purpureum l) and tea (camellia sinensisl) cuttings
(School of Biological Sciences, 2009)A green-house study was conducted to investigate the ability of an isolate of Trichoderma harzianum (P52) and arbuscular mycorrhizal fungi (AMF) in enhancing growth in tomato seedlings, tea and napier grass cuttings. The ... -
Effect of type of prey on the life parameters of the soil predacious mite,Gamasiphis tylophagous ( Mesostigmata: Ologamasidae), a predator of the citrus parasitic nematode, Tylenchus semipenetrans ( Tylenchide : Tylenchulidae ).
(University of NairobiSchool of Biological and Physical Sciences, 1999)Abstract Not Available -
The effect of vaccinating S. mansoni-infected BALB/c mice either before or after treatment
(2006)In Schistosoma mansoni endemic areas, there are people with ongoing S. mansoni infection, others have been infected and treated while others have never been infected. What would happen if these different groups of people ... -
Effect of water glass treatment on the mechanical and thermooxidative properties of kenaf and sisal fibres
(2013-06-26)In this article, the effect of water glass on the mechanical and thermooxidative properties of kenaf and sisal fibres has been investigated. Single fibres were manually separated from the bundles and immersed in liquid ... -
Effective Biotransformation Of Reactive Black 5 Dye Using Crude Protease From Bacillus Cereus Strain KM201428
(University of Nairobi, 2018)Effective effluent treatment is a paramount step towards conserving the dwindling clean water resources. The present study describes the use of crude protease extract from Bacillus Cereus Strain KM201428 biotransformation ... -
Effective integration of biodiversity resources and management as a tool for promoting rural agricultural reform
(University of NairobicCollege of biological and physical science, 2003) -
Effective thermal conductivity of loose particulate systems
(School of Physical Sciences, 1996)The effective thermal conductivity for several loose particulate insulation systems has been measured in the temperature range from 273 K–900 K and the results compared to those predicted from three different models. The ... -
EFFECTIVENESS OF AMODIAQUINE AS TREATMENT FOR CHLOROQUINE-RESISTANT PLASMODIUM FALCIPARUM INFECTIONS IN KENYA
(ElsevierDepartment of pharmacy, University of Nairobi, 1984)Studies were conducted in Malindi, Kenya, to assess the response of Plasmodium falciparum to chloroquine and amodiaquine in vivo (by an extended 14-day test) and in vitro (with the Rieckmann micro test). In-vivo resistance ... -
Effectiveness of entomopathogenic nematodes against sweet potato weevil (Cylas puncticollis) Boheman (Coleoptera: Apionidae) under semi-field conditions in Kenya
(University of NairobiCollege of Biological and Physical Sciences,University of Nairobi, 2009)Sweet potato (Ipomoea batatas (L.) Lam.) ranks second in production and value after cassava among the root crops in Kenya. Its production has been declining mainly due to the damaging effects of Cylas puncticolis Boheman ... -
The effectiveness of metrifonate in reducing hookworm infection in Kenyan school children.
(1986)The reduction in hookworm egg counts was determined in children treated with 1 and 2 doses of metrifonate. Kenyan primary school children were allocated to receive either 10.0 mg (n = 53) or 7.5 mg (n = 53) of metrifonate ...