Faculty of Science & Technology (FST): Recent submissions
Now showing items 921-940 of 4283
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Water Resources
(2013)Fresh water is one of the basic necessities without which human beings cannot survive since water is key to the sustainability of all kinds of lifeforms. Water has multiple uses namely; nutritional, domestic, recreational, ... -
Maturity, fecundity and the effect of reduced rainfall on the spawning rhythm of a siluroid catfish, Clarias mossambicus (Peters)
(University of Nairobi, 1989-10)Five maturity stages in the male and six in the female Clarias mossambicus (Peters) are described based on macroscopic and histological analysis of the gonads. During the study period (September 1984-August 1985) the species ... -
Diet and food utilization in Oreochromis esculentus (Graham) in Lake Kanyaboli, Kenya
(University of Nairobi, 1994-08)Blue-green algae (Cyanophyta) and green algae (Chlorophyta) were the principal food items ingested by Oreochromis esculentus (Graham) in Lake Kanyaboli. Diatoms (Bacillariophyta), euglenoids (Euglenophyta) and zooplankton ... -
Investigation of the Effect of film Thickness on the Optical Properties of Amorphous Se 85-xTe15Sbx
(University of Nairobi, 2014)Amorphous thin films of Se85-xTe15Sbx (x = 0.0, 0.5, 2.5, and 5.0 at. %) deposited by flash evaporation technique, have been investigated in the wavelength range of 500nm-3000nm. It is found that the effect of increasing ... -
Effect of temperature on the phenology of Chilo partellus (Swinhoe) (Lepidoptera, Crambidae); simulation and visualization of the potential future distribution of C. partellus in Africa under warmer temperatures through the development of life-table parameters.
(University of Nairobi, 2014)Maize (Zea mays) is a major staple food in Africa. However, maize production is severely reduced by damage caused by feeding lepidopteran pests. In East and Southern Africa, Chilo partellus is one of the most damaging ... -
ICT and Food Security: Case of GIS in Food Emergency Response
(University of Nairobi, 2013)This paper presents a framework for food emergency response and demonstrates the use of Geographical Information Systems as a solution to planning for and managing food emergencies. This is particularly critical in countries ... -
Busseola segeta, a Potential New Pest of Maize in Western Kenya
(2014)In sub-Saharan Africa, Busseola fusca (Fuller) (Lepidoptera, Noctuidae) is considered as one of the major stem borer pests of maize (Zea mays) and sorghum (Sorghum bicolor) [1]. Recent surveys in Western Kenya indicated ... -
Methylene Blue Adsorption onto Coconut husks/Polylactide Blended Films: Equilibrium and Kinetic Studies
(2014)The removal of cationic methylene blue (MB) from aqueous solutions by coconut husks/polylactide blended films was studied in a batch system. Experiments were modeled as a function of contact time, initial dye concentration, ... -
Effects of Foliar Fertilizer Application on Quality of Tea (Camellia sinensis) Grown in the Kenyan Highlands
(2014)In Kenya, foliar fertilizers have not found use in tea production despite their numerous advantages as exhibited in other crops. A fertilizer trial test was established in three sites of the major tea growing regions, with ... -
Towards the development of a citizen-centric framework for evaluating the impact of eGovernment: A case study of developing countries
(2014)eGovernment has emerged as one of the innovative ways of providing information and delivering services to citizens. It is providing governments with new opportunities of bringing services closer to the citizen in cost-effective, ... -
Mobile Learning: A Bridging Technology for varying Learner Entry Behavior
(2014)The use of technology in teaching and learning processes has brought a major shift in the way instructors have to design instructions. The cost of mobile devices has declined with time making the devices affordable. All ... -
Thidiazuron-induced somatic embryogenesis and shoot regeneration in cotyledon explants Of melia volkensii gürke
(University of Nairobi, 2014) -
Litter Fall Dynamics of Restored Mangroves (Rhizophora mucronata Lamk. and Sonneratia alba Sm.) in Kenya
(2014)Mangrove forests are active carbon sinks and important for nutrient cycling in coastal ecosystems. Restoration of degraded mangrove habitats enhances return of ecosystem goods and services, including carbon sequestration. ... -
Synergistic repellent activity of plant essential oils against Aedes aegypti on rabbit Skin
(2014)Mosquito-borne diseases are the major causes of mortality particularly in tropics. Due to drug and insecticide resistance, personal protection by use of skin repellents has become a common approach of control. The purpose ... -
Surface passivation effect on CO2 sensitivity of spray pyrolysis deposited Pd-F: SnO2 thin film gas sensor
(2014)Different thin films samples made of SnO2, F:SnO2, Pd: SnO2 and and co-doped Pd-F: SnO2 were deposited at a substrate temperature of 450oC using optimized doping concentrations of F and Pd, thereafter the samples were ... -
Lead Exposure and Blood Pressure among Workers in Diverse Industrial Plants in Kenya
(2014)The study evaluated airborne exposures and blood lead (BPb) levels in 233 production workers at six diverse industrial plants in Kenya. Blood and personal breathing zone air samples were collected and analyzed for lead ... -
Cloud Computing in Kenya A 2013 Baseline Survey
(University of Nairobi, 2014) -
The selection of a standard STR panel for DNA profiling of the African elephant (Loxodonta africana) in Kenya
(University of Nairobi, 2014-10-26)Abstract The African elephant (Loxodonta africana) population in Kenya is declining at an alarming rate due to habitat destruction, human-elephant conflicts and the current escalation of poaching for ivory. This study ... -
Flemingins G–O, Cytotoxic and Antioxidant Constituents of the Leaves of Flemingia grahamiana
(2014)The known flemingins A–C (1–3) and nine new chalcones, named flemingins G–O (4–12), along with deoxyhomoflemingin (13) and emodin (14) were isolated from a leaf extract of Flemingia grahamiana. The isolated chalcones were ...