Seagrass meadows are efficient carbon dioxide (CO2) sinks sequestering about 10% of the annual or... more Seagrass meadows are efficient carbon dioxide (CO2) sinks sequestering about 10% of the annual organic carbon (Corg) burial in the global oceans. Corg sequestered by seagrass beds in Marine Protected Areas (MPAs) in Western Indian Ocean (WIO) region is poorly understood.The purpose of the study was to determine carbon sequestration in living seagrass biomass and sediments in the seagrass meadows of Malindi Marine Park (MMP) and Malindi Marine Reserve (MMR). Seagrass was sampled using 10 cm x 10 cm, 20 cm long corer while sediments was sampled using a PVC corer 2 cm diameter, 20 cm long during South East Monsoon (SEM) and North East Monsoon (NEM). Seagrass biomass was determined and converted into Corg while sediment Corg was determined by loss on ignition (LOI). Results showed that the dominant seagrass species was Thalassodendron ciliatum with over 80% cover. Other seagrass species present in MMP and MMR were Thalassia hemprichii, Enhalus acoroides, Syringodium isoetifolium and Hal...
Olkaria is a high temperature geothermal system located within the central sector of the Kenya Ri... more Olkaria is a high temperature geothermal system located within the central sector of the Kenya Rift System, and associated with a region of Quaternary volcanism. Recharge into the system is exclusively by meteoric water, derived primarily from the high-altitude rift escarpments. Tectonic structures play without a doubt a pivotal role in enhancing fluid flow within the geothermal system. For this study, data and samples from four wells, OW-905A, OW-910, OW-917 and OW-922, have been used. Wells OW-905A, OW-910 and OW-917 were drilled within and along the proposed caldera structure. Well OW-922 is a step-out vertical well, drilled to the east of the proposed caldera structure. This study largely focuses on well OW-922, while, the other three wells have been included for comparison purposes. The study presents a comprehensive look at the borehole geology and hydrothermal mineralisation, sub-surface petrochemistry and microprobe analysis. Lithologies intersected by the study well include...
Contemporary organizations in Africa have continued to embrace strategic management in their ques... more Contemporary organizations in Africa have continued to embrace strategic management in their quest to boost performance in the risky business environments so as to maximize returns on their investments. The government of Kenya has currently embarked on an elaborate plan to expand its economic viability through the maritime sector, which is largely untapped, to achieve its Vision 2030 and Big Four Agenda for sustainability. Strategic leadership thus plays a pivotal role in the achievement of these objectives. This research proposal intended to find out the effect of strategic leadership as it applies to the maritime sector in Kenya. The research intended to collect primary data using random and stratified sampling of key informants. The respondents were approached open mindedly, and a reliable induction done just before their responses could be recorded. Structured, open and close-ended questionnaires were administered to the key informants who were sampled from all the ranks of lead...
Submitted in part fulfillment of the requirements for the Degree of Master of Commerce (Forensic ... more Submitted in part fulfillment of the requirements for the Degree of Master of Commerce (Forensic Accounting)
College of Biological and Physical Science School of Mathematics Masters of Science in Biometry M... more College of Biological and Physical Science School of Mathematics Masters of Science in Biometry MODELING GENOTYPE AND ENVIRONMENT INTERACTION FOR PERFORMANCE STABILITY AND ADAPTABILITY OF SUGARCANE CULTIVARS by Otieno Victor Ouma
.................................................................................................... more ..................................................................................................................................... v LIST OF TABLES ........................................................................................................................ viii LIST OF FIGURES ........................................................................................................................ ix CHAPTER ONE .............................................................................................................................. 1 1.0 INTRODUCTION ............................................................................................................... 1 1.1 Statement of the problem ................................................................................................. 4 1.2 RESEARCH OBJECTIVES ............................................................................................ 5 1.3 SIGNIFICANCE OF THE STUDY ................................................................................. 6 CHAPTER TWO ............................................................................................................................. 8 2.0 LITERATURE REVIEW .................................................................................................... 8 2.
Background Malaria and schistosomiasis present considerable disease burden in tropical and sub-tr... more Background Malaria and schistosomiasis present considerable disease burden in tropical and sub-tropical areas and severity is worsened by co-infections in areas where both diseases are endemic. Although pathogenesis of these infections separately is well studied, there is limited information on the pathogenic disease mechanisms and clinical disease outcomes in co-infections. In this study, we investigated the prevalence of malaria and schistosomiasis co-infections, and the hematologic and blood chemistry abnormalities in asymptomatic adults in a rural fishing community in western Kenya. Methods This sub-study used samples and data collected at enrollment from a prospective observational cohort study (RV393) conducted in Kisumu County, Kenya. The presence of malaria parasites was determined using microscopy and real-time-PCR, and schistosomiasis infection by urine antigen analysis (CCA). Hematological analysis and blood chemistries were performed using standard methods. Statistical a...
Sugarcane breeding all over the world aims at improving cane yield and sugar content to get new v... more Sugarcane breeding all over the world aims at improving cane yield and sugar content to get new varieties that gets into the market. Kenya is not left out since the demand by the stakeholders in the Kenya sugar industry for new improved sugarcane varieties is high. The economic value of improving such sugarcane traits has not been incorporated in many of the sugarcane selection program including the one for Kenya Sugar Research Foundation (KESREF). This research was designed to construct an economic selection index that combines both cane and sugar yields according to their economic values. Breeding experimental trial was established and the convectional KESREF sugarcane breeding program followed from stage 1 to 5, though the selection index was used in stage 3 to 5.A randomized complete block (RCBD) was used in all the stages to randomize the treatments and agronomic and quality traits data were collected. An Analysis of Variance was performed to estimate the heritability, genotypi...
The presence of heavy metals in the marine environment is a major concern because of their toxici... more The presence of heavy metals in the marine environment is a major concern because of their toxicity and threat to the wellbeing of flora and fauna and the disturbance to the ecological balance. Heavy metals such as lead and cadmium are bioaccumulative, relatively stable and carcinogenic so they require close monitoring. Seven edible fish species Scomberoides commersonnianus; (Pandu) n=2, Chaetodon species;(Matuguu) n=3, Leiognathus equulus;(Viramba) n=3, Gerres oyena; (chaa) n=3, Carangoides gymnostethus; (kole kole) n=3, Koro koro, n=2 and Gnathodentex aureolineatus; (Changu) n=1 were bought from the local fishermen at the sampling station, Makupa Creek, Mombasa in February, 2011 for the determination of the concentration of heavy metals lead and cadmium in gills and muscles. The study area receives a wide variety of wastes generated by Mombasa City Council and the industries such as the Changamwe oil refinery. Atomic Absorption Spectrophotometer PG 990 series was used in the deter...
Seagrass meadows are efficient carbon dioxide (CO2) sinks sequestering about 10% of the annual or... more Seagrass meadows are efficient carbon dioxide (CO2) sinks sequestering about 10% of the annual organic carbon (Corg) burial in the global oceans. Corg sequestered by seagrass beds in Marine Protected Areas (MPAs) in Western Indian Ocean (WIO) region is poorly understood.The purpose of the study was to determine carbon sequestration in living seagrass biomass and sediments in the seagrass meadows of Malindi Marine Park (MMP) and Malindi Marine Reserve (MMR). Seagrass was sampled using 10 cm x 10 cm, 20 cm long corer while sediments was sampled using a PVC corer 2 cm diameter, 20 cm long during South East Monsoon (SEM) and North East Monsoon (NEM). Seagrass biomass was determined and converted into Corg while sediment Corg was determined by loss on ignition (LOI). Results showed that the dominant seagrass species was Thalassodendron ciliatum with over 80% cover. Other seagrass species present in MMP and MMR were Thalassia hemprichii, Enhalus acoroides, Syringodium isoetifolium and Hal...
Olkaria is a high temperature geothermal system located within the central sector of the Kenya Ri... more Olkaria is a high temperature geothermal system located within the central sector of the Kenya Rift System, and associated with a region of Quaternary volcanism. Recharge into the system is exclusively by meteoric water, derived primarily from the high-altitude rift escarpments. Tectonic structures play without a doubt a pivotal role in enhancing fluid flow within the geothermal system. For this study, data and samples from four wells, OW-905A, OW-910, OW-917 and OW-922, have been used. Wells OW-905A, OW-910 and OW-917 were drilled within and along the proposed caldera structure. Well OW-922 is a step-out vertical well, drilled to the east of the proposed caldera structure. This study largely focuses on well OW-922, while, the other three wells have been included for comparison purposes. The study presents a comprehensive look at the borehole geology and hydrothermal mineralisation, sub-surface petrochemistry and microprobe analysis. Lithologies intersected by the study well include...
Contemporary organizations in Africa have continued to embrace strategic management in their ques... more Contemporary organizations in Africa have continued to embrace strategic management in their quest to boost performance in the risky business environments so as to maximize returns on their investments. The government of Kenya has currently embarked on an elaborate plan to expand its economic viability through the maritime sector, which is largely untapped, to achieve its Vision 2030 and Big Four Agenda for sustainability. Strategic leadership thus plays a pivotal role in the achievement of these objectives. This research proposal intended to find out the effect of strategic leadership as it applies to the maritime sector in Kenya. The research intended to collect primary data using random and stratified sampling of key informants. The respondents were approached open mindedly, and a reliable induction done just before their responses could be recorded. Structured, open and close-ended questionnaires were administered to the key informants who were sampled from all the ranks of lead...
Submitted in part fulfillment of the requirements for the Degree of Master of Commerce (Forensic ... more Submitted in part fulfillment of the requirements for the Degree of Master of Commerce (Forensic Accounting)
College of Biological and Physical Science School of Mathematics Masters of Science in Biometry M... more College of Biological and Physical Science School of Mathematics Masters of Science in Biometry MODELING GENOTYPE AND ENVIRONMENT INTERACTION FOR PERFORMANCE STABILITY AND ADAPTABILITY OF SUGARCANE CULTIVARS by Otieno Victor Ouma
.................................................................................................... more ..................................................................................................................................... v LIST OF TABLES ........................................................................................................................ viii LIST OF FIGURES ........................................................................................................................ ix CHAPTER ONE .............................................................................................................................. 1 1.0 INTRODUCTION ............................................................................................................... 1 1.1 Statement of the problem ................................................................................................. 4 1.2 RESEARCH OBJECTIVES ............................................................................................ 5 1.3 SIGNIFICANCE OF THE STUDY ................................................................................. 6 CHAPTER TWO ............................................................................................................................. 8 2.0 LITERATURE REVIEW .................................................................................................... 8 2.
Background Malaria and schistosomiasis present considerable disease burden in tropical and sub-tr... more Background Malaria and schistosomiasis present considerable disease burden in tropical and sub-tropical areas and severity is worsened by co-infections in areas where both diseases are endemic. Although pathogenesis of these infections separately is well studied, there is limited information on the pathogenic disease mechanisms and clinical disease outcomes in co-infections. In this study, we investigated the prevalence of malaria and schistosomiasis co-infections, and the hematologic and blood chemistry abnormalities in asymptomatic adults in a rural fishing community in western Kenya. Methods This sub-study used samples and data collected at enrollment from a prospective observational cohort study (RV393) conducted in Kisumu County, Kenya. The presence of malaria parasites was determined using microscopy and real-time-PCR, and schistosomiasis infection by urine antigen analysis (CCA). Hematological analysis and blood chemistries were performed using standard methods. Statistical a...
Sugarcane breeding all over the world aims at improving cane yield and sugar content to get new v... more Sugarcane breeding all over the world aims at improving cane yield and sugar content to get new varieties that gets into the market. Kenya is not left out since the demand by the stakeholders in the Kenya sugar industry for new improved sugarcane varieties is high. The economic value of improving such sugarcane traits has not been incorporated in many of the sugarcane selection program including the one for Kenya Sugar Research Foundation (KESREF). This research was designed to construct an economic selection index that combines both cane and sugar yields according to their economic values. Breeding experimental trial was established and the convectional KESREF sugarcane breeding program followed from stage 1 to 5, though the selection index was used in stage 3 to 5.A randomized complete block (RCBD) was used in all the stages to randomize the treatments and agronomic and quality traits data were collected. An Analysis of Variance was performed to estimate the heritability, genotypi...
The presence of heavy metals in the marine environment is a major concern because of their toxici... more The presence of heavy metals in the marine environment is a major concern because of their toxicity and threat to the wellbeing of flora and fauna and the disturbance to the ecological balance. Heavy metals such as lead and cadmium are bioaccumulative, relatively stable and carcinogenic so they require close monitoring. Seven edible fish species Scomberoides commersonnianus; (Pandu) n=2, Chaetodon species;(Matuguu) n=3, Leiognathus equulus;(Viramba) n=3, Gerres oyena; (chaa) n=3, Carangoides gymnostethus; (kole kole) n=3, Koro koro, n=2 and Gnathodentex aureolineatus; (Changu) n=1 were bought from the local fishermen at the sampling station, Makupa Creek, Mombasa in February, 2011 for the determination of the concentration of heavy metals lead and cadmium in gills and muscles. The study area receives a wide variety of wastes generated by Mombasa City Council and the industries such as the Changamwe oil refinery. Atomic Absorption Spectrophotometer PG 990 series was used in the deter...
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