Faculty of Science & Technology (FST): Recent submissions
Now showing items 501-520 of 4283
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Application of Raman spectroscopy in detection of Aflatoxin B1 in maize kernels
(University of Nairobi, 2015)Use of Raman spectroscopy in detecting aflatoxin B1 (AFB1) in maize kernels is reported. Distinct difference between AFB1 contaminated and uncontaminated kernels were observed from Raman spectral profiles obtained after ... -
Optical Properties Of Flash Evaporated Amorphous Se100-xinx Thin Films For Cuinse2 Solar Cell Applications
(University of Nairobi, 2012)Amorphous Se100-XInX thin films were prepared by flash evaporation of the pre-melt quenched bulk samples. The samples were characterised and the suitability of each composition assessed towards applications as a buffer ... -
Stability Investigation in the Optical Properties of Thermally Evaporated Ge5Se95-x Znx Thin Films
(University of Nairobi, 2015)Selenium-based chalcogenides are useful in telecommunication devices like infrared optics and threshold switching devices. The investigated system of Ge5Se95-xZnx (0.0 ≤ x ≤ 4 at.%) has been prepared from high purity ... -
Regional differences in the mural structure of the human coronary sinus
(2016)Regional differences in the mural structure of the coronary sinus are important in understanding its physico-mechanical properties and the basis for extent of atrial fibrillation and ablation. These features are only ... -
Anatomical features of renal artery in a black Kenyan population: Correlation with markers of atherosclerosis
(2016)Knowledge of anatomical features of the renal artery is important in prediction, management and control of atherosclerotic renal artery stenosis. These features show population variations but data from black African ... -
Comparing the Performance of Naïve Bayes and Support Vector Machines in Text Classification
(2015)Classification is a supervised learning task whose goal is to infer a prediction model using a training dataset containing instances whose category membership is known, and then using the model to assign class labels to ... -
E-Waste Management in Kenya: Challenges and Opportunities
(2015-12)The production and use of Electrical and Electronic Equipment (EEE) continues to grow in both developing and developed countries therefore increasing the amount of Waste Electrical and Electronic Equipment (WEEE) at its ... -
A Stochastic Model for Planning a Compartmental Education System and Determining Stable Student Population Distribution
(2014)In most developing countries, populations grow exponentially thus directly impacting on student populations in education systems. In an ecosystem, a stable predator/prey population ensures the survival and sustenance of ... -
Hydromagnetic Steady Flow of Liquid Between Two Parallel Infinite Plates Under Applied Pressure Gradient when Upper Plate is Moving with Constant Velocity Under the Influence of Inclined Magnetic Field
(2014)This paper studies steady laminar flow of viscous incompressible fluid between twoparallel infinite plates when a constant pressure gradient is imposed on the system and upperplate is also moving with constant velocity ... -
Fabrication of Dye Sensitized Solar Cell Based on Titanium Dioxide (TiOz)
(2015)The Dye Sensitized Solar Cell (DSSC)plays an important role because of low material cost, ease of production and high conversion efficiency as compared to other thin-film solar cell technologies. The main objective is ... -
Controlled Texturing of Aluminum Sheet for Solar Energy Applications
(University of Nairobi, 2015)Aluminum sheets were polished to reduce ruggedness and then textured in varying acid-ethanol concentration etchant to form pores. The textured surface was characterized structurally by using X-ray diffraction (XRD)which ... -
The wintering and moult of ruffs philomachus pugnax in the Kenyan rift valley
(University of Nairobi, 1981)Some 5700 Ruffs were ringed in the southern Kenyan rift valley during 1967–79, mainly at Lakes Nakuru and Magadi. These have produced 15 recoveries outside East Africa, 14 in Siberia between 73° and 154°E and one in ... -
An alternative clean-up column for the determination of polychlorinated biphenyls in solid matrices.
(2015-12)The need for continuous monitoring of polychlorinated biphenyls (PCBs) has necessitated the development of analytical techniques that are sensitive and selective with minimal reagent requirement. In light of this, we ... -
Isolation and characterization of an antifungal compound 5-hydroxy-7,4'-dimethoxyflavone from Combretum zeyheri
(University of Nairobi, 2015)BACKGROUND: Combretum zeyheri, belongs to the family Combretaceae and is one of the most popular herbal plants in tropical and subtropical countries. The leaves of Combretum zeyheri have been used as herbal medicine and ... -
Trypanosoma Infection Rates in Glossina Species in Mtito Andei Division, Makueni County, Kenya.
(University of Nairobi, 2015-11)African Animal Trypanosomiasis (AAT) transmitted cyclically by tsetse fly (Glossina spp.) is a major obstacle to livestock production in the tropical parts of Africa. The objective of this study was to determine the infection ... -
Bentonite used as a host matrix in the study of ester hydrolysis
(University of Nairobi, 2015)Abstract: In this paper results obtained on the kinetics of este r adsorption on raw, acid treated and pre - heated bentonite have bee n presented. T he infra - red profiles and the XRF spectra of ... -
Multistate modelling vertical transmission and determination of r0 using transition intensities
(University of Nairobi, 2015)In this paper multi-state modelling is used to determine the proba- bility distribution of the di erent states of vertical transmission of HIV. We start with a healthy-infected-dead three state model which we then modify ... -
Variant anatomy of intracranial part of middle meningeal artery in a Kenyan population
(University of Nairobi, 2015)Anatomy of the intracranial part of middle meningeal artery is important during ligation or embolization in epidural haematomas, and in surgical approach to the middle cranial fossa. It shows population variations, but ... -
A one-health approach to control the incidence of rabies in the slums of Nairobi
(University of Nairobi, 2015-11)Rabies is a zoonotic disease causing 55,000 human deaths every year and the domestic dog is a main reservoir in Africa. Vaccination of the dog population effectively reduces the incidence of rabies in dog and human population. ... -
Antileishmanial Activity of Kenyan Medicinal Plants
(University of Nairobi, 2008)The EtOH extracts of two hundred thirteen medicinal plants, collected in various parts of Kenya, were tested for in vitro antileishmanial activity using Leishmania donovanii promastigotes. Thirty five plant extracts (i.e., ...