Faculty of Science & Technology (FST): Recent submissions
Now showing items 3001-3020 of 4284
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Fluoride content in some Kenyan tea leaves
(Department of Chemistry, 1994)Different grades and clones oftea from various parts of Kenya were analysed for total, acid and water labile fluoride using ion selectiveelectrode. It was found that, about 80-99% of total fluoride was acid labile while ... -
Ticks and tick-borne parasites associated with indigenous cattle in Didtuyura Ranch, southern Ethiopia
(University of Nairobi.School of Biological Sciences, 1998)Tick populations were monitored between October 1991 and September 1992 at monthly intervals on 10 Boran (Bos indicus) heifers at Didtuyura ranch, Yabelo district, Ethiopia. Twelve different tick species in four genera ... -
Lithostratigraphy, provenance and facies distribution of Archaean cratonic successions in western Kenya
(Elsevier,Department of Geology, University of Nairobi, 1995)The greenstone belt of the Tanzanian shield in Western Kenya is composed of two supracrustal successions, which form the Nyanzian and Kavirondian Groups. The Nyanzian Group at the base is composed of mafic tholeiitic ... -
Analysis of fluoride in locally available beverages: Comparison of direct, oven diffusion and hexamethyldisiloxane diffusion methods
(Department of Chemistry, 2004)Analysis of fluoride in a variety of beverages was carried out using three different methods inconjunction with a fluoride ion selective electrode. The three methods gave comparable results for 26samples of fruit juices. ... -
Prospects for Transgenic and Molecular Breeding for Cold Tolerance in Canola (Brassica napus)
(University of NairobiCollege of biological and physical science, 2012) -
Determination of labile fluoride in Kenyan soils
(Department of Chemistry, 2005) -
Drop-off patterns for engorged adult females, nymphs and larvae of Rhipicephalus appendiculatus
(University of Nairobi.School of Biological Sciences, 1991-12)A drop off rhythm of engorged Rhipicephalus appendiculatus Neumann was demonstrated for females and engorged nymphs, but not for larvae. Seventy per cent of 1279 engorged R. appendiculatus females dropped off the animals ... -
Production of Anthocyanins in Grape Cell Cultures: A potential Source of Raw Material for Pharmaceutical, Food, and Cosmetic Industries
(University of NairobiCollege of biological and physical science, 2013) -
Accumulation of fluoride in plants and vegetables
(Department of Chemistry, 1994)Fluoride in plant and vegetable samples has beendetermined using the ion selective electrode.The analysis was carried out after ashingthe samples onan open flame, adding perchloric acid and allowing the hydrogen fluoride ... -
Pest status of bean stem maggot (Ophiomyia sp.) and Black bean aphid (Aphis fabae) in Taita District, Kenya
(school of biological sciences, university of Nairobi, 2011)On-station and on-farm studies were carried out in 2008 during the long rains (March – May), in Taita region, Kenya, to assess the effect of various soil fertility regimens on bean stem maggot (BSM) (Ophiomyia spp.) and ... -
Further observations on survival and fertility of Glossina morsitans morsitans maintained on immunized rabbits
(University of Nairobi.School of Biological Sciences, 1984)A significant increase in mortality was observed in Glossina morsitans morsitans maintained for approx. 45 days on rabbits immunized with tsetse or bovinetrypsin. Tsetse and bovine trypsin were observed to cross-react when ... -
Prospects of using tick parasitoids (Insecta) for tick management in Africa
(University of Nairobi.School of Biological Sciences, 1997)Since the first report of tick parasitoids by Howard (1907), sevens pecies belonging to the genus Ixodiphagus have been described. Apart from a few parasitoid releases in the USA and Europe in the first third of the century, ... -
Effects of bacteria, antibacterial compounds and trypanosomes on tsetse reproduction and longevity
(University of Nairobi.School of Biological Sciences, 1987-04)Haemocoelic injections of live Escherichia coli and oral administration of three tetracycline compounds, namely Reverin, Maxitet and Terramycin to female Glossina morsilans morsitans prior to their first larviposition, ... -
Prospects for Innovative Tick Control Methods in Africa
(University of Nairobi.School of Biological Sciences, 2003-03)Ticks, and the diseases they transmit, are of great economic and medical importance worldwide, and especially in Africa, where they are considered to be the greatest animal disease problem. The four major genera of ticks ... -
INSECT SPECIES ASSOCIATED WITH SWEET POTATOES ( Ipomoea batatas (L.) LAMK) IN EASTERN KENYA
(Department of Plant Science and Crop Protection, University of Nairobi, 2008)This study was conducted in Kibwezi, Eastern Ke nya during 20 November 2002 to 04 June 2003 to document the insects associated with sweet potatoes (Ipomoea batatas (L.) Lamk) and delineate the most important pests ... -
A review of the progress made in recent years on research and understanding of immunity in insect vectors of human and animal diseases
(University of Nairobi.School of Biological Sciences, 1989-12)Different modes of immune reactions of insect vectors of human and animal diseases to nematode and protozoan parasites, fungi, bacteria, viruses and to other biological materials e.g. xenografts are discussed in this paper. ... -
Dark J-V Characterization of a Dye-Sensitized Module
(university of Nairobicollege of biological nd physical science, 2012) -
Relative equilibria of Hamiltonian systems with symmetry: Linearization, smoothness, and drift
(Springer, 1995)A relative equilibrium of a Hamiltonian system with symmetry is a point of phase space giving an evolution which is a one-parameter orbit of the action of the symmetry group of the system. The evolutions of sufficiently ... -
Relative equilibria in Hamiltonian systems: The dynamic interpretation of nonlinear stability on a reduced phase space
(Elsevierdepartment of mathematics, university of Nairobi, 1992)Stability of relative equilibria for Hamiltonian systems is generally equated with Liapunov stability of the corresponding fixed point of the flow on the reduced phase space. Under mild assumptions, a sharp interpretation ... -
Multisymplectic Geometry, Variational Integrators, and Nonlinear PDEs
(1998)This paper presents a geometric-variational approach to continuous and discrete mechanics and field theories. Using multisymplectic geometry, we show that the existence of the fundamental geometric structures as well as ...
