Faculty of Science & Technology (FST): Recent submissions
Now showing items 3761-3780 of 4213
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Influence of composition and firing temperature on physio-mechanical properties of a Kenyan triaxial (quartz-feldspar-kaolin) porcelain
(Department of Physics, University of Nairobi, 2000)In this study, the effect of composition and sintering temperature on material properties (physical and mechanical) of porcelain composed of 0-50 wt% silica, 10-70 wt% kaolin and 20-50 wt% feldspar have been investigated. ... -
Assessment of quality assurance in diagnostic radiology in selected hospitals in Nairobi
(2007)Available data at the Radiation Protection Board of Kenya Laboratories (RPBL), indicates an increasing trend in the installation of medical x-ray facilities in the country, particularly in Nairobi. This is an indication ... -
Passive solar energy-efficient building design in Kenya
(Department of Physics - University of Nairobi., 1998)This work aims at providing thermal comfort specifications for buildings Kenya without the use of expensive active conditioning devices. It utilizes a computer proqram , ARCHIPAK, together with the climatic data for ... -
Mobility and hydrodynamics of Selected heavy metals and coliforms on a cross-section of Nairobi river
(Depatment of Chemistry, University of Nairobi, 2010)The current study was aimed at investigating the mobility and hydrodynamics of selected heavy metals and coliforms on a section of Nairobi River, from Waiyaki way-Riverside junction to Kamukunji grounds. It also explored ... -
Assessment of mammography practise in Kenya and optimization of its Radiation protection aspects
(Institute of Nuclear Science and Technology, 2008)All mammography units in the country, totaling fourteen in number at the time, were evaluated on the basis of performance and practice to come up with useful data for summing up the mammography practice in Kenya. This ... -
Hypersurface orthogonal decomposition and analysis of the skew sector of a massive nonsymmetric gravitational theory linearized on a curved background
(Department of Physics, University of Nairobi,, 1999)Although General Relativity still provides the best classical description of gravitational phenomenon it leads to the following unfortunate predictions about the Universe :- (i) that there was a singularity in the ... -
Essential oils of some plants of the family capparidaceae. as repellents for the brown ear tick, rhipicephalus appendiculatus and the maize weevil, sitophilus zeamais.
(Depatment of Chemistry, University of Nairobi, 1995)This thesis describes a chemical and bioactivity study of the essential oils of five tropical plant species of the family capparidaceae, namely Boscia angustifolia A. Rich var. angustifolia, Boscia mossambicensis Klotzsch, ... -
Characterization of elemental densities of Selected herbal haematinics and antiacids Used in the Masai region of Kenya.
(Institute of nuclear science and technology, University of Nairobi, 2007) -
Relativity in complex spacetime
(Department of physics, University of Nairobi, 1998)general theory of Relativity has been developed on the basis of a complexified spacetime and its scale equivalence principle. The results are in agreement with the familiar Schwarzschild solution (as derived from Einstein's ... -
E-voting readiness in Kenya: A case study of Nairobi
(School of Computing and Informatics, 2011)Developing countries have established promising e-voting initiatives with the objective of enhancing the democracy for their citizens. However, governments tend to design and launch systems based on their understanding ... -
Energy dispersive x-ray fluorescence spectrometry of light element matrices
(Department of Physics - University of Nairobi., 1996)The utility of Energy Dispersive X-ray Fluorescence (EDXRfo) spectrometry has revealed that accurate trace clement analysis in light clement matrices is limited by scattering and the associated high background radiations; ... -
Investigation of the major chemical Components in the roots of Vernonia galamensis SSP. Nairobensis
(Depatment of Chemistry, University of Nairobi, 1997) -
Assessment of human exposures to natural sources of radiation in Kenya
(Department of Physics University of Nairobi, 1999)Exposures of human beings to the natural background radiation in Kenya are assessed using measured activity concentrations of natural radionuc1ides and dose conversion factors; The sampling locations for geological ... -
Computer aided sizing of PV systems to suit different geographical regions in Kenya
(Department of Physics - University of Nairobi., 1998)In theory, Photovoltaic (PV) systems can be sized to meet any load demand. The size and viability of such systems depend on the load demand and its variability, availability of solar resource at the site, and the efficiency ... -
Evaluation studies on the Application of vernonia and other epoxidized Vegetable oils in alkyd and epoxy coatings.
(Depatment of Chemistry, University of Nairobi, 1992)Vernonia oil and other epoxidized vegetable oils were studied for their characteristics and evaluated for their applications as reactive diluents in alkyd coatings and in elastomers for toughening epoxy coatings. These ... -
An investigation of computer security status at the University of Nairobi
(School of Computing and Informatics, 2000)The problem addressed in this study is inadequacy in the current security mechanism in the relation to the three control mechanisms of physical control, logical control and administrative control. Solution to the study ... -
Release kinetics of a synthetic tsetse Allomone based on waterbuck odour from a Tygon silicon dispenser
(Depatment of Chemistry, University of Nairobi, 2006)This study was conducted in order to develop an appropriate dispenser for the waterbuck-derived repellent for tsetse flies. The waterbuck-derived repellent consisted of pentanoic, hexanoic and heptanoic acids, guaiacol, ... -
Fate of chlorothalonil on snowpeas and assessment of its residues in french beans and passion fruits in Nairobi
(Depatment of Chemistry, University of Nairobi, 2010)Chlorothalonil (2, 4, 5, 6-tetrachlorophthalonitrile) is a broad spectrum contact fungicide. It has both agricultural and household uses. Residues of chlorothalonil are regularly found on farm produce of plants that are ... -
Cellular Communication Security System (CCSS)
(School of Computing and Informatics, 2006)Wireless communications is a huge field, encompassing everything from radio and television broadcasting through pagers, mobile phones, and satellite communications. With expansion of this mode of communication, more and ... -
Particle retention and ionic strength effects in thermel field-flow fractionation
(Depatment of Chemistry, University of Nairobi, 2001)Field-Flow Fractionation (FFF) of which thermal field-flow fractionation (ThFFF) is a member of, is a family of separation techniques applicable to the separation of macromolecules and particles. FFF spans a wide mass/size ...
