Browsing School of Biological and Physical Sciences by Issue Date
Now showing items 1-20 of 59
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The natural pyrethrins and carotenoid pigments
(University of Nottingham, 1983)The thesis describes the chemistry of some commercial natural products obtained from plants indigenous to Kenya. The natural products are the insecticidal 'pyrethrins' obtained from flower heads of Chrysanthemum ... -
Stability of Lie Groups of Nonlinear Hyperbolic Equations
(University of Pretoria, 1997)Nonlinear theories, started in the 1960's, provided for the first time in the literature global generalized solutions for arbitrary continuous nonlinear partial differential equations (PDEs). These theories have now been ... -
Study of dissipation and degradation of malathion and dimethoate from the soil and the pea plant (Pisum sativum) using a radioisotope tracer technique
(Maseno University, 1999)The dissipation and degradation of 14C-malathion {S-l, 2- bis (ethoxy carbonyl) ethyl 0, 0- dimethyl phosphorodithioate} and T'Csdimethoate {O, O-dimethyl S-methyl carbamoyl methyl phosphorodithioate} from the soil and ... -
Distribution of the water hyacinth(Eichhornia Crossipes) (mart) solms.] its carpet characteristics, some of its diseases and pests in the Winam gulf of lake Victoria
(Maseno University, 2002)The occurrence of the Water hyacinth (Eichhornia crassipes [Mart.] Sohns) in the Winam gulfhas created numerous negative attributes that make its control an urgent priority. Little has been reported about its carpet ... -
Distribution of the Water Hyacinth [Eichhornia Crassipes (Mart.) Solms.], Its Carpet Characteristics, Some of Its Diseases and Pests in the Winam Gulf of Lake Victoria
(Maseno University, 2002)Theoccurrence of the Water hyacinth (Eichhornia crassipes [Mart.] Solms) in the Winam gulfhas created numerous negative attributes that make its control an urgent priority. Little hasbeen reported about its carpet ... -
Screening Some Parameters of the C3 Species and C4 Species Influencing their Distribution along the Altitudinal Gradient in arid and Semi arid Ecosystems of Western Kenya
(Maseno University, 2005)Studiesof the parameters determining the mechanism of photosynthesis and theirimpacton the distribution of the plant species has been reported in literature \ in the Poaceae and Cyperaceae groups. Novel observations Oft ... -
Local adaptations, comparative trophic ecology and phylogenetic analysis of the haplochromine Cichlids of lake Kanyaboli, a satellite lake of lake Victoria,Kenya
(Maseno University, 2005)The satellite lakes of Lake Victoria region have been noted as potential refugia of haplochromine cichlids that have gone extinct in Lake Victoria. These lakes include lakes Kanyaboli, Sare and Namboyo in Kenya, Nawampasa, ... -
Drug susceptibilities and mechanisms of drug resistance Among salmonella typhimurium isolates from persons in Western Kenya
(Maseno University, 2007)Drug resistant microorganisms are a major worldwide health issue, as a number of important human pathogens have now acquired mechanisms that make them largely resistant to most currently available treatment regimens. The ... -
A comparative study of ecological factors that influence potential transmission of malaria in the Highlands and lowlands of western Kenya
(Maseno University, 2007)Vectored malaria, a major cause of morbidity and mortality in Africa South of the Sahara presently still prevails in highland areas. Malaria was eradicated from highland areas in the late 1950s using DDT against mosquitoes. ... -
Comparative seed longevity studies in selected Succullent genera: euphorbia, kalanchoe and edithcolia
(Maseno University, 2008)The future utility value of seeds of Euphorbia, Kalanchoe and Edithcolia pose challenges as none has been investigated for storage longevity under seed bank conditions yet their wild populations are threatened by ... -
Physicochemical parameters heavy metal residue levels and their speciation studies in the Victoria basin
(Maseno University, 2008)The occurrence of heavy metal contaminants in excess of natural loads is a problem of increasing concern in aquatic ecosystems. This has been caused by anthropogenic, industrial and urban wastes as well as natural geochemical ... -
Bacterial pollution indicators and their Physico-chemical environment in the inshore Waters of Lake Victoria, Kisumu city in Relation to enteric diseases
(Maseno University, 2008)Studies on Lake Victoria especially on the Nyanza Gulf has focused on fish kills, fish pathogens, algal blooms, limnological studies and eutrophication. This may be due to the fact that surveying water for faecal indicators ... -
On the design and functionality of a solar chimney, Solar pressure-staged wind tunnel electric power Generating plant and an integrating sphere Calorimeter. I . I \
(Maseno University, 2009)The design and application of solar chimney and solar pressure-staged wind tunnel electric power generating plants involve the understanding of parameters which affect their operations and utilization. The size and ... -
Effects of Intercropping Bambara Groundnut (Vigna subterranea (L) Verdic) and NERICA rice (Oryza sativa L.) on their Productivity and Soil Fertility
(Maseno University, 2010)Agricultural production in Kenya has stagnated since 1980s resulting in malnutrition in over 89% of Kenya's population. Food insecurity has been identified as the prime cause of malnutrition. Low agricultural productivity ... -
Field and laboratory evaluation of newly-introduced Long-lasting insecticide treated nets (llins) for malaria Vector control
(Maseno University, 2010)Insecticide treated nets (ITNs) have been proven to substantially reduce morbidity and mortality due to malaria among children and pregnant women in Sub-Sahara Africa. However, the disadvantages with ITNs are that they ... -
Repulsive electron interaction and nuclear charge screening:- Ground state of two electron atoms
(Maseno University, 2010) -
Relativistic dynamics based on Finsler geometry
(Maseno University, 2010) -
Detection of Sweet Potato Viruses in Western Kenya, Development of a Multiplex PCR Technique for Detection of Major Viruses and Evaluation of Medicinal Plants for Antifungal and Antibacterial Activities against the Crop Pathogens
(Maseno University, 2011)Sweet potato is an important food crop worldwide since it is drought tolerant and acts as a famine relief crop. However, its production is limited by viral, fungal and bacterial infections. Lack of rapid and sensitive ... -
A Comparative Study of B-Cell Homeostasis and Epstein-Barr Virus Reactivation in Cidldren from areas Experiencing Divergent Plasmodium, Falciparumexposure and Endemic Burkitt's Lymphoma Patients
(Maseno University, 2011)Endemic Burkitt's lymphoma (BL) is a pediatric B-cell malignancy.associated with a lot of mortality. Although studies have implicated Plasmodium falciparum and Epstein Barr VIT,uS(EBV).infections iIlBL pathogenesis.their ... -
Genetic Basis of Heat Induced Sex Determination in Nile Tilapia (Oreochromis Niloticus L.), and Genetic Variability of the Species Local Populations
(Maseno University, 2011)Oreochromis niloticus commonly known as Nile tilapia is the most cultured tilapine cichlid in the sub-Saharan Africa. Most of the culture practices are of mixed sexes with the inherent problem of overpopulation leading ...