Browsing PHD-Chemistry by Title
Now showing items 1-20 of 38
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ADH/ADLH polymorphism as biochemical and genetic markers in study of alcohol tolerance in selected Kenyan populations
(2011-08-16)Excessive alcohol consumption is a major health hazard worldwide. Alcohol is commonly used and often abused in Kenya, especially by the youth. For European, Asian, Australian and American populations, studies have shown ... -
Antimicrobial efficacy of selected medicinal peanuts used by Kenyan herbal doctors
(2012-05-07)Herbal medicine is practiced by many countries of the world including Kenya, but scientific data to support the efficacy of herbal preparations has been lacking. Sixteen indigenous plants used by herbal doctors in Kenya ... -
Biomass-Based Fertilizer Formulation Using Chemically Decomposed Agricultural Wastes and Evaluation of Its Efficacy in Growing Maize
(Kenyatta University, 2020)Utilization of the conventional fertilizers such as NPK, DAP, CAN and Urea by smallholder farmers in developing countries like Kenya has remained dismal due to high retail prices as well as environmental and soil related ... -
Biomass-Based Fertilizer Formulation Using Chemically Decomposed Agricultural Wastes and Evaluation of Its Efficacy in Growing Maize
(Kenyatta University, 2020-11)Utilization of the conventional fertilizers such as NPK, DAP, CAN and Urea by smallholder farmers in developing countries like Kenya has remained dismal due to high retail prices as well as environmental and soil related ... -
Bioprospecting for Anti-Mosquito Phytochemicals Associated With Olfaction and Larvicidal Activities From Selected Kenyan Plants
(Kenyatta University, 2020)Mosquitoes are of high public health concern since they are significant disease vectors of different tropical and subtropical life-threatening diseases like malaria, dengue, yellow fever, chikungunya, zika virus and ... -
Bioprospecting for Anti-Mosquito Phytochemicals Associated with Olfaction and Larvicidal Activities from Selected Kenyan Plants
(Kenyatta University, 2020-01)Mosquitoes are of high public health concern since they are significant disease vectors of different tropical and subtropical life-threatening diseases like malaria, dengue, yellow fever, chikungunya, zika virus and ... -
Characterisation of Kenyan honey and a design model for processing equipment
(2011-07-26)Honey production potential in Kenya is estimated to be 100,000 metric tonnes which can earn the country between Ksh 15-20 billion in foreign exchange. This production potential is not met because of poor apiculture practices. ... -
Computational chemistry studies of (1,7) sigmatropics hydrogen shiftd in Z,Z-1,3,5- heptatrien systems and esterification reactions
(2011-07-19)Density functional theory has been used to study mechanisms of the reactions involving [1,7]-sigmatropic hydrogen shift in Z,Z-1,3,5-heptatriene systems, esterification of acetyl chloride with methanol and acid-catalyzed ... -
Concentration of iron in laterites using in-situ carbonized biomass
(2014-08-28)Iron occurs in more than 85 minerals. However, among these, only a few are important ores of the element. For economical extraction of iron, the iron ore must contain over 55% iron. These ores must be concentrated before ... -
Determination of heavy metals in Kenyan cigarettes, tobacco leaves and intercropped plants by atomic absorption spectrophotometry.
(2012-05-07)Recent studies have indicated an increasing concern for the role that cadmium and lead play or are suspected to play in biological and physiological disorders such as emphysema of the lungs, renal tubular damage, cancer ... -
Diammonium Phosphate Fertilizer from Bone–Phosphate Enriched Phosphoric Acid and Ammonia from Lithium Nitride and its Efficacy in Tomato Growing
(Kenyatta University, 2021)obtained from finite rock phosphate is one of the essential elements for food production and modern agriculture. Therefore, for sustainability of food supply and development in agriculture, management of phosphorus is key. ... -
Diversity and distribution of the afroalpine flora of Eastern Africa with special reference to the taxonomy of the genus pentaschistis (poaceae)
(2013-08-14)The African tropic−alpine system, consists of a number of geographically separated ‘sky−islands’ and constitutes an excellent system in which to investigate the interaction between the geographical and ecological components ... -
Effects of dehydration of dark-greenn, leafy vegetables on bioavailability and bioconversion of serum beta-carotene among preschool children
(2011-10-25)Vitamin A, an essential micronutrient has its deficiency remaining as a major public health problem in developing countries. The deficiency is caused by insufficient intake of foods rich in vitamin A or pro-vitamin A ... -
Effects of selected media on novel portland pozzolana cement
(2011-07-19)Cement is subject to degradation by aggressive media found in the environment. Durability tests are therefore necessary for any cementitious material in a given environment. The work reported in this thesis involved the ... -
Efficacy and kinetics of adsorption of single and multiple heavy metal cations from aqueous solutions by fruit waste products
(Kenyatta University, 2016-12)Removal of toxic heavy metals from water has been a major challenge, especially in rural areas. Various methods have been used for this purpose; among them is biosorption based technology. The technology has been recognized ... -
Fabrication and characterization of magneto responsive carbon nanotube-infused polysulfone (cnt-ipsf) nanocomposites for water purification
(2017-09)The search for materials for purification of polluted water is growing daily with the advent of nanoparticles. This is particularly important because many populations of people in the developing countries lack clean water ... -
Facile Remediation of Fluoride in Aquatic Media Using Modified Polyethylene Container
(Kenyatta University, 2020-07)Development of environmentally friendly and economically viable water treatmet techniques for remediation of fluoride ions in drinking water has gained a huge research interest. Floridated water is associated with dental ... -
Flouride levels in water sources of Gilgil area in Kenya: Deflouridation using locally available geomaterials
(Kenyatta University, 2015)ABSTRACT High prevalence of fluorosis resulting from consumption of drinking water containing excessive fluoride levels continues to affect many communities in Kenya. Low in come rural communities are most affected because ... -
Isolation and characterization of antimalarial compounds from selected medicinal plants used in Coastal Kenya
(2011-08-12)Malaria remains a devastating scourge on the lives and livelihoods to the millions of global citizens living in the tropics. Plant-derived antimalarials have made and continue to make an immense contribution to malaria ... -
Isolation and structural elucidation of bioactive metabolites from Fungi, Trichoderma species and a higher plant, Tephrosia Aequilata
(2012-02-14)The tea plant, Camellia sinensis (L.) O. Kuntze is an important crop in the agriculturally based economy of Kenya. It ranks second to tourism as an earner of foreign exchange and provides a livelihood for more than a ...
