School of Science: Recent submissions
Now showing items 461-480 of 491
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DETERMINATION OF DIFFUSION COEFFICIENTS OF FOOD
(2016-05-20)Food additives play a vital role in today’s bountiful and nutritious food supply and their transportation in water is a diffusion process governed by Fickian diffusion laws. The study looks into the rate of diffusion of ... -
EFFECTIVENESS OF ACID TOLERANT INDIGENOUS RHIZOBIA AND LIME APPLICATION ON THE PERFORMANCE OF GROUNDNUT IN WESTERN KENYA.
(2016-05-20)Rhizobia inhabit root nodules where they reduce atmospheric nitrogen into a form available to plants. High productivity of grain legumes depends on effective symbiotic nitrogen fixation through successful legume inoculation ... -
ANTIMICROBIAL PROPERTIES AND PHYTOCHEMICAL COMPOSITION OF SOLANUM NIGRUM COMPLEX (BLACK NIGHT SHADE)
(2016-05-20)Solanum nigrum complex is a group of plants used as indigenous vegetables and also a source of traditional medicine in Kenya and other parts of the world. There are many species in the S. nigrum complex which include Solanum ... -
VEGETATION COMPOSITION, REGENERATION AND ANTHROPOGENIC DISTURBANCES IN WESTERN MAU FOREST, KENYA
(2016-05-20)Western Mau Forest is located at an altitude of 2,000 and 2,600 m and between the latitudes 00 10’ 46” S to 00 17’ 42” S and longitudes of 350 27’ 05” E to 350 39’ 42” E. It was originally 22,712 ha, but has been subjected ... -
AN INVESTIGATION OF EFFECTS OF BOUNDARY LAYER THICKNESS
(2016-05-20)The motion of fluid substances can be described by the Navier-Stokes equations. These equations arise from the application of Newton's second Law of motion to a fluid. In this study, Navier-Stokes equations in two ... -
HEAVY METALS, PHOSPHATES AND NITRATES LEVELS IN VEGETABLES: A CASE STUDY OF KITALE MUNICIPALITY, TRANS-NZOIA COUNTY, KENYA
(2016-05-20)Effluents released from sewage treatment plant contain toxic metal pollutants whose uptake by vegetables is governed by their availability and concentration in the soil. Therefore such vegetables may accumulate pollutants ... -
SYNTHESIS OF A PHENYLETHYLTHIOUREA DERIVATIVE AS A POTENTIAL NON-NUCLEOSIDE INHIBITOR OF HIV-1 REVERSE TRANSCRIPTASE
(2016-05-20)The emergence of resistant strains of HIV-1 towards existing drugs has prompted a search for new compounds with good antiviral activity and favourable toxicological profile. This work reports the synthesis of a PETT ... -
SYNTHESIS OF A PHENYLETHYLTHIOUREA DERIVATIVE AS A POTENTIAL NON-NUCLEOSIDE INHIBITOR OF HIV-1 REVERSE TRANSCRIPTASE
(2016-05-20)The emergence of resistant strains of HIV-1 towards existing drugs has prompted a search for new compounds with good antiviral activity and favourable toxicological profile. This work reports the synthesis of a PETT ... -
TAXONOMY AND NUTRIENT COMPOSITION OF SPECIES IN THE Vernonia hymenolepis A. RICH. COMPLEX IN TROPICAL EAST AFRICA
(2016-05-20)Three Stengelioid species forming a complex in the genus Vernonia Schreber. in Tropical East Africa viz., Vernonia calvoana (Hook.f.) Hook.f., Vernonia hymenolepis A. Rich. and Vernonia tolypophora Mattf. were investigated ... -
AN INVESTIGATION ON MAGNETOHYDRODYNAMICS FLUID FLOW BETWEEN TWO PARALLEL INFINITE PLATES SUBJECTED TO AN INCLINED MAGNETIC FIELD AND VARYING TEMPERATURES
(2016-05-20)Magnetohydrodynamics (MHD) is the study of electrically conducting fluids in the presence of magnetic fields. This study examined the motion of a viscous, electrically conducting and incompressible fluid flowing steadily ... -
CHARACTERISATION, ANTIFUNGAL AND MOSQUITOCIDAL ACTIVITIES OF MORMODICA FOETIDA LEAF EXTRACTS AND THEIR FORMULATION INTO DROP PILLS.
(2016-05-20)The upsurge in the prevalence of resistance to many synthetic antifungal agents and incidence of multidrug resistant mosquito-borne diseases has spurred scientists to research for new plant-based antifungal and mosquitocidal ... -
INVESTIGATION OF POLLUTANT LEVELS AND EFFICIENCY OF HEAVY
(2016-05-19)An increase in population initiating rapid industrialization has been found to consequently increase the effluents and domestic wastewater into the aquatic system. This has resulted in heavy metal pollution which has become ... -
ROTATING OPTICAL BEAMS: DIGITAL HOLOGRAPHIC GENERATION, PROPERTIES AND SELF-RECONSTRUCTION DYNAMICS
(2016-05-19)This thesis reports on an experimental investigation of rotating optical beams. Superpositions of higher-order Bessel beams with rotating intensity profiles were generated using a digital holographic experimental technique ... -
POLLUTANT LEVELS IN WASTE WATER FROM TANNERY EFFLUENT: A
(2016-05-19)Wastewater from leather processing industries is very complex and leads to water pollution if discharged before treatment, especially due to its high organic loading and chromium content. Over the past years, Nakuru Tanners ... -
EFFECT OF HYPERTENSION ON RENAL FUNCTIONS IN DIABETICS
(2016-05-19)Hypertension affects and progressively reduces the filtering function of the kidney leading to chronic kidney disease. There are many incidences of people with high blood pressure hence chronic kidney disease is expected ... -
SYNTHESIS, SPECTRAL AND ELECTROCHEMICAL STUDIES OF
(2016-05-19)In this thesis, the synthesis, characterization and electrochemical studies of monometallic and bimetallic complexes of schiff base ligands have been undertaken. Synthesis of bimetallic complexes initially involved preparation ... -
OPTICAL NOISE PERFORMANCE IN SMF-REACH AND SMF-REDUCED SLOPE FOR RAMAN FIBRE AMPLIFICATION USING DIFFERENT PUMPING TECHNIQUES
(2016-05-19)Signal amplification in optical fibres during transmission has become one of the techniques in improving capacity and reach in telecommunication networks. Fibre Raman amplifiers (FRAs) are currently being adopted in many ... -
ALGEBRA OF COUPLED ELECTRONS IN THE CO-EXISTENCE OF
(2016-05-19)Superconductivity is a phenomenon in which the d.c electrical resistance of a material vanishes completely and instantly rather than gradually when it is cooled below a certain temperature called the superconducting ... -
SPATIAL AND TEMPORAL VARIATIONS IN PHYSICO-CHEMICAL
(2016-05-19)Increased human activities have led to water pollution, especially metals and nutrients. Therefore, prudent management of aquatic environments require information on their quality status that can be estimated by monitoring ... -
EVALUATION OF CHILDHOOD MALARIA MANIFESTATIONS, DIAGNOSTIC AND MANAGEMENT PRACTICES IN WESTERN KENYA HIGHLANDS
(2016-05-19)Malaria remains a major killer in many parts of the world and challenges in accurate malaria diagnosis regrettably encourage widespread presumptive malaria treatment. The study conducted between September 2009 and May 2011 ...
