Faculty of Science & Technology (FST): Recent submissions
Now showing items 301-320 of 4283
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Understanding the Impacts of Climate Change in the Tana River Basin, Kenya
(University of Nairobi, 2018)In the Tana River Basin in Kenya, six Regional Circulation Models (RCMs) simulating two Representative Concentration Pathways (RCPs) (i.e., 4.5 and 8.5) were used as input to the Soil and Water Assessment Tool (SWAT) model ... -
In vitro regeneration of pigeon pea using leaf explants
(University of Nairobi, 2016)Pigeon pea (Cajanus cajan (L.) Millsp.) is a drought tolerant pulse legume, mainly grown for grain in the semiarid tropics, particularly in Africa. Pigeon pea production in countries like Kenya is faced with a number ... -
Postharvest practices of maize farmers in Kaiti District, Kenya and the impact of hermetic storage on populations of Aspergillus spp. and aflatoxin contamination.
(University of Nairobi, 2016)Aflatoxin contamination in maize by Aspergillus spp. is a major problem causing food, income and health concerns. A study was carried out in Kaiti District in Lower Eastern Kenya to evaluate the effect of three months storage ... -
Management of snap bean insect pests and diseases by use of antagonistic fungi and plant extracts.
(University of Nairobi, 2017)Use of synthetic pesticides reduces the competitiveness of Kenyan snap bean pods due to stringent regulations by importers as a result of presence of chemical residues. This study was conducted to determine the effectiveness ... -
The Chemistry of African Croton species
(University of Nairobi, 2016)The genus Croton is one of the largest of Euphorbiaceae sensu stricto, and consists of over 1300 species of trees, shrubs and herbs that are distributed worldwide in the warm tropics and subtropics. It is reported that 124 ... -
Antibacterial and antifungal activities of 10 Kenyan Plectranthus species in the Coleus clade
(University of Nairobi, 2017)Background Information: Plectranthus L’Hér. is an economically important genus with horticultural, medicinal and food uses. Most Plectranthus species are used in traditional medicine and have attracted the interest ... -
Phytoremediation using bamboo to reduce the risk of chromium exposure from a contaminated tannery site in Kenya
(University of Nairobi, 2017)Background. This study examines an intervention strategy to reduce the risk of chromium (Cr) exposure. It follows a previous Cr exposure investigation, which revealed that large volumes of Cr-contaminated waste were burnt ... -
Structural and optical properties of phosphorous and antimony doped ZnO thin films deposited by spray pyrolysis: a comparative study
(University of Nairobi, 2017)A study of structural and properties of pure (undoped) Zinc oxide (ZnO) and phosphorous (P) and Antimony (Sb) doped Zinc Oxide films has been carried out. The films were deposited by an automated spray pyrolysis equipment ... -
Use of intelligent agents in collaborative m-learning: case of facilitating group learner interactions
(University of Nairobi, 2017)Intelligent agents have been used in collaborative learning. However, they are rarely used to facilitate group interactions in collaborative m-learning environments. In view of this, the paper discusses the use of ... -
Regulating group cognitive conflicts using intelligent agents in collaborative M-learning
(University of Nairobi, 2017)Group cognitive conflicts occur when a learner in a collaborative mobile learning environment becomes aware of a discrepancy between his/her existing cognitive framework and new information or experience. The cognitive ... -
A model for evaluating e-learning systems quality in higher education in developing countries.
(University of Nairobi, 2017)The rapid growth of Information and Communication Technology (ICT) has brought about significant changes in the practice of e-learning globally. In recent years, there has been an increasing adoption of Learning Management ... -
Mobile learning: content format and packaging for effective teaching and learning in a learner-centered pedagogy
(University of Nairobi, 2017)When an instructor is able to identify, develop and apply appropriate digital media content that motivates learners and encourages them to learn, the process of learning is empowered. This study has identified multimedia ... -
Diterpenoids from the roots of Croton dichogamus Pax.
(University of Nairobi, 2017-12)Four previously undescribed diterpenoids including two crotofolanes, crotodichogamoin A and B, and two halimanes, crothalimene A and B, a new sesquiterpenoid, and fifteen previously reported compounds, including the ... -
Antimycoplasmal Activities of Compounds from Solanum aculeastrum and Piliostigma thonningii against Strains from the Mycoplasma mycoides Cluster.
(University of Nairobi, 2017-12)Infections caused by Mycoplasma species belonging to the 'mycoides cluster' negatively affect the agricultural sector through losses in livestock productivity. These Mycoplasma strains are resistant to many conventional ... -
Unclear association between levels of Plasmodium falciparum lactate dehydrogenase (PfLDH) in saliva of malaria patients and blood parasitaemia: diagnostic implications?
(University of Nairobi, 2018)The use of saliva in diagnosis of infectious diseases is an attractive alternative to procedures that involve blood drawing. It promises to reduce risks associated with accidental needle pricks and improve patient compliance ... -
Relative Deprivation, Protests and Voting in Kenya
(University of Nairobi, 2018)While protests and voting are forms of political participation, their theoretical and empirical literature has largely developed independently and remains unintegrated, despite a possible common causal mechanism. This ... -
Soil contamination from lead battery manufacturing and recycling in seven African countries.
(University of Nairobi, 2018-02)Lead battery recycling is a growing hazardous industry throughout Africa. We investigated potential soil contamination inside and outside formal sector recycling plants in seven countries. We collected 118 soil samples at ... -
Status of insecticide resistance in malaria vectors in Kwale County, Coastal Kenya.
(University of Nairobi, 2018-01)BACKGROUND: The strategy for malaria vector control in the context of reducing malaria morbidity and mortality has been the scale-up of long-lasting insecticidal nets to universal coverage and indoor residual spraying. ... -
Characterization and productivity profiles of Aedes aegypti (L.) breeding habitats across rural and urban landscapes in western and coastal Kenya.
(University of Nairobi, 2017)BACKGROUND: Aedes aegypti, the principal vector for dengue and other emerging arboviruses, breeds preferentially in various man-made and natural container habitats. In the absence of vaccine, epidemiological surveillance ... -
Characteristics of Aedes aegypti adult mosquitoes in rural and urban areas of western and coastal Kenya.
(University of Nairobi, 2017)Aedes aegypti is the main vector for yellow fever, dengue, chikungunya and Zika viruses. Recent outbreaks of dengue and chikungunya have been reported in Kenya. Presence and abundance of this vector is associated with the ...