Faculty of Science & Technology (FST): Recent submissions
Now showing items 3681-3700 of 4089
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A study of the electrochemical characteristics of a bentonite/polyaniline composite
(Depatment of Chemistry, University of Nairobi, 1996) -
Application of linear mixed models in microarray
(College of biological and physical sciences school of mathematics, 2007)This project captures the problem of large microarray datasets and seeks to identify a statistical model of microarray hybridization intensity data that describes;differential regulation, sample variability and measurement ... -
Modeling farmer's adoption of on-farm technologies
(College of biological and physical sciences school of mathematics, 2006)Soil fertility degradation has been a major issue attributed to poor crop yield among many small-scale holders in various parts of Kenya and other nations in developing countries. Adoption of new technologies to improve ... -
Trace gas emissions from biomass cookstoves in Kiambu and Bungoma districts. (A pilot study).
(Depatment of Chemistry, University of Nairobi, 2000)A study incorporating an opinion survey and quantification of selected trace gases (C02, CO and NO) emitted from biomass fires was conducted in Kiambu and Bungoma districts respectively between 1996 and 1997. The 3-stone ... -
Analysis and evaluation of forms of fluoride in milk from naturally high and low fluoride areas in Kenya and the effect of this intrinsic milk fluoride on teeth demineralisation.
(Depatment of Chemistry, University of Nairobi, 2001) -
Phytochemical investigation of Psiadia Punctulata in Kenya
(Depatment of Chemistry, University of Nairobi, 2000)The genus Psiadia belongs to the family Compositae (Asteraceae), which is the largest plant family in the world. It is composed of some 60 species, which is distributed throughout the world. Phytochemical studies have ... -
Antiplasmodial anthracene derivatives from some Kenyan Aloe and Bulbine species
(Depatment of Chemistry, University of Nairobi, 2005)The roots and stems of three Aloe species (A kilifiensis, A. lateritia and A. graminicola) and two Bulbine species tBulhine abvssinica and Bulhine frutescensi were serially extracted by cold percolation with n-hexane, ... -
Effects of solid supports on the kinetics of Ester hydrolysis.
(Depatment of Chemistry, University of Nairobi, 2000)Research into catalytic and adsorptive properties of various naturally occurring substances is crucial. Catalysis and adsorption plays a very important role in the industrial world, especially in the fields of synthesis ... -
Phytochemical investigation of Zanthoxylum Usambarense
(Depatment of Chemistry, University of Nairobi, 2001)The genus Zanthoxylum belongs to the family Rutaceae. This Family comprises some 150 genera and over 1,600 plant species. In Kenya, the Rutaceae is represented by 28 species in 10 genera. The genus, sometimes referred ... -
Studies on desmodium species for the allelochemicals involved in striga suppression
(Depatment of Chemistry, University of Nairobi, 2007)The fodder legumes Desmodium uncinatum and D. intortum suppress the growth of Striga hermonthica (witch-weed) via an allelopathic mechanism that involves Striga germination stimulants and post-germination growth inhibitors. ... -
The distribution and fate of 14C labeled DDT in a tropical marine environment.
(Depatment of Chemistry, University of Nairobi, 2000)A study on the fate of 1,1,1 trichloro-2, 2 bis (p-chlorophenyl) ethane (DDT) in the environment was conducted using a model ecosystem simulating a tropical marine ecosystem. The ecosystem comprised seawater, sediment, ... -
Semiochemical basis of feeding preferences on waterbuck kobus defassa, buffalo syncerus caffer and ox, by some glossina morsitans group of Tsetse
(Depatment of Chemistry, University of Nairobi, 1999)This study was carried out based on the speculation that gradation of hosts as sources of blood meal by tsetse flies is due to the absence and/or presence of specific semiochemicals. The study was carried out to establish ... -
Influence of selected co-solutes on copper (ii) removal from aqueous solutions using a micaceous mineral of Kenyan origin
(Depatment of Chemistry, University of Nairobi, 2005)In this study, a micaceous mineral (Micalvlx) (a local natural resource that occurs abundantly in Kenya), whose efficiency has been demonstrated for Cu2+ removal from water, was employed as an affordable adsorbent for ... -
A study on the extent to which lead and cadmium from motor vehicles have contaminated roadside soils and vegetation in Nairobi and Kiambu, Kenya.
(Depatment of Chemistry, University of Nairobi, 1992)The lead and cadmium concentrations in roadside soils and grass from six sites in Nairobi and four sites in Kiambu were determined by atomic absorption spectrometry. Results showed that both soil and grass contained ... -
Clay montmorillonite derivatized electrode as a template for electrosynthesis of conducting polymers and organic biomolecules
(Depatment of Chemistry, University of Nairobi, 2000)In this thesis the electrochemical studies of a special type of polymers namely conducting polymers (CPs) using cyclic voltammetry technique is reported. This is a fast electroanalytical tool capable of providing ... -
Electrocatalysis of ascorbic acid oxidation on a polyaniline derivatized electrode
(Depatment of Chemistry, University of Nairobi, 1993)The results presented in this thesis reveal marked improvement in the oxidation characteristics of ascorbic acid, when the latter 1.s oxidized on a polyaniline derivatized carbon graphite working electrode. The pH of the ... -
Studies on the dissipation and metabolism of some insecticides under Kenyan environmental conditions.
(Depatment of Chemistry, University of Nairobi, 1993) -
Determination of concentration of total suspended particulate matter and some gaseous air pollutants in Athi river urban area, in Kenya
(Depatment of Chemistry, University of Nairobi, 2002)A study for the assessment of air quality with respect to total suspended particulate matter, heavy metals (Zn, Cd, Pb, Cu, Mn, Fe) analysis together with S.02 H2S, and NH3 gases emitted in Athi-River town was carried ... -
Larvicidal and anti-plasmodial compounds from derris trifoliata, lonchocarpus eriocalyx and erythrina sacleuxii
(Depatment of Chemistry, University of Nairobi, 2006) -
Atmospheric emission budgets for domestic biomass burning in Kenya
(Depatment of Chemistry, University of Nairobi, 2000)The thesis is the culmination of a series of efforts designed to quantify the annual contribution of domestic biofuel burning in Kenya to local, regional and global atmospheric trace gas budgets in 1997, by way of a ...