Faculty of Science & Technology (FST): Recent submissions
Now showing items 181-200 of 4283
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A mixed model approach to vegetation condition prediction using artificial neural networks (ANN): case of Kenya’s Operational Drought Monitoring
(MDPI, 2019-05-08)Droughts, with their increasing frequency of occurrence, especially in the Greater Horn of Africa (GHA), continue to negatively affect lives and livelihoods. For example, the 2011 drought in East Africa caused massive ... -
Drug Resistance Mutations Among Antiretroviral-Treated Female Sex Workers In Nairobi, Kenya
(African Journal of Health Sciences, Volume, 2013-12)Antiretroviral drug resistance remains an important and a growing challenge in HIV management as it almost always lead to treatment failure. Sex workers face persistent exposures to the different HIV-1 variants and in ... -
Projected Climatic and Hydrologic Changes to Lake Victoria Basin Rivers under Three RCP Emission Scenarios for 2015–2100 and Impacts on the Water Sector
(MDPI, 2019-07-13)Abstract: Rivers in the Lake Victoria Basin support a multitude of ecosystem services, and the economies of the riparian countries (Kenya, Tanzania, Uganda, Rwanda, and Burundi) rely on their discharge, but projections ... -
On Local Linear Regression Estimation In Sampling Surveys
(2017-10)A model-based survey is employed to estimate the unknown values of the survey variable, using the local linear regression approach. In particular, a local linear regression estimator in model-based surveys is studied. ... -
On Comparison of Local Polynomial Regression Estimators for P=0 and P=1 in a model based framework
(Canadian Center of Science and Education, 2018-07)This article discusses the local polynomial regression estimator for P=0 and the local polynomial regression estimator for P=1 in a finite population. The performance criterion exploited in this study focuses on the ... -
Zoonotic Pathogen Seroprevalence in Cattle in a Wildlife-Livestock Interface, Kenya.
(University of Nairobi, 2019)A cross-sectional study was conducted to determine the seroprevalence of Brucella spp. and Leptospira spp. and risk factors of exposure in cattle in three zones with varying land use types and wildlife-livestock interactions. ... -
Aflatoxin-producing fungi associated with pre-harvest maize contamination in Uganda.
(University of Nairobi, 2020)Maize is an important staple crop for the majority of the population in Uganda. However, in tropical and subtropical climates, maize is frequently contaminated with aflatoxins, a group of cancer-causing and immuno-suppressive ... -
Environmental assessment of heavy metal pollutants in soils and water from Ortum, Kenya.
(University of Nairobi, 2020)Analysis of elemental concentration in soil and water was carried out in Ortum to ensure safe utilization of soil and water resources for agriculture, industrial, and household purposes. Elemental analysis of soil and water ... -
Synthesis, structural assignments and antiinfective activities of 3-O-benzyl-carvotacetone and 3-hydroxy-2-isopropyl-5-methyl-p-benzoquinone.
(University of Nairobi, 2020)In an attempt to synthesize carvotacetone analogues, new 3-O-benzyl-carvotacetone (10) and previously reported 3-hydroxy-2-isopropyl-5-methyl-p-benzoquinone (11) were synthesized from piperitone (7). In this work, we ... -
Effects of Supplemental Irrigation on Crop Yields: Case Study Kales (Brassica Oleracea) Crop
(Journal of Ecological Engineering, 2020-02)The aim of this study was to investigate the effects that supplemental irrigation (SI) has on Kale (Brassica Oleracea) crop yields as compared to wholly rain-fed crop. The experiments were conducted in Kieni, Central Kenya ... -
Ecological, recreational and educational potential of a small artificial wetland in an urban environment
(University of Nairobi, 2019)Pertinent questions remain on whether small, artificial wetlands, such as abandoned quarries play any ecological or socio-economic role in the environment. To increase information on roles played by small-sized artificial ... -
Availability and prices of antimalarials and staffing levels in health facilities in Embu County, Kenya
(East and Central African Pharmaceutical Sciences, 2019)Effective treatment of malaria relies on the availability of quality medicines while pricing is a major determinant of affordability. In addition, adequate numbers of competent staff of different cadres is essential for ... -
Household characteristics as predictors of access to paediatric malaria treatment in Homa-Bay County, Kenya.
(University of Nairobi, 2019)OBJECTIVE: To investigate the influence of socioeconomic household characteristics on access to paediatric malaria treatment in Homa Bay County, Kenya. RESULTS: From univariate analysis, treatment with analgesics ... -
Medicinal Plants of the Maasai of Kenya: A Review.
(University of Nairobi, 2019)The use of medicinal plants for treatment of humans and animals is entrenched in the Maasai culture and traditional knowledge related to it is passed on from one generation to the next. A handful of researchers have in the ... -
Investigation of flow dynamics of porous clinkers in a ball mill using technitium-99m as a radiotracer.
(University of Nairobi, 2019)A radiotracer investigation was carried out in a ball mill of a cement plant in Kenya. Residence time distribution (RTD) of raw feed to the mill was measured using Technetium-99m adsorbed on the clinkers as a radiotracer. ... -
Near Real-time Tropospheric Water Vapour Profiling Using A Ground-based GPS Receiver
(University of Nairobi, 2017)This article presents a remote-sensing tool employing an artificial neural networks algorithm for near real-time determination of the relative humidity (RH) profile above a site using global positioning system (GPS) data ... -
On Analysis And Synthesis Operators And Characterization Of The Synthesis Matrix Of A Frame In Terms Of The Frame Operator
(University of Nairobi, 2018)In this research paper we introduce the operators associated with a frame. That is the Analysis and the Synthesis Operators and their basic properties. The structure of matrix representation of the Synthesis operator is ... -
A Neoarchean paleomagnetic pole from the Kisii Series of western Kenya: Implications for crustal mobility
(University of Nairobi, 2016)The Kisii Series lavas of western Kenya were the target of a paleomagnetic study. The Kisii Series is a volcano-sedimentary sequence dated to 2531 ± 3 Ma (U–Pb) that rests unconformably over the Mesoarchean–Neoarchean ... -
Device Simulation of Sb2S3 Solar Cells by SCAPS-1D Software
(University of Nairobi, 2019)Antimony sulphide (Sb2S3) has drawn research interest due to its promising properties for photovoltaic applications. The progress in developing highly efficient Sb2S3 solar cells has stimulated this study to a great extent. ... -
A Multi-dimensional Model for Determining Susceptibility to Unintentional Insider Threats: the Case of Social Engineering Through Phishing
(University of Nairobi, 2019)Many of the information security incidents that make headlines around the world are perpetrated by authorized users of the information systems. These users are commonly referred to as insiders. The Unintentional Insider ...