Browsing School of Pure and Applied Sciences by Title
Now showing items 1-20 of 259
-
Advances in sample pretreatment and detection of PCBs in the environment
(Journal of Hazardous Materials Advances, 2021)Pollution of the environment by polychlorinated biphenyls (PCBs) continues to be a global concern because of their toxicity, persistence, long-range transport properties and ability to bioaccumulate in fatty tissues. PCBs ... -
An algorithm for simulation of a Chemical Transport Equation in an Aquifer
(2012)Dynamical systems can be predicted using mathematical models. These models are usually Partial Different Equations (PDEs). Examples include the wave equation, equations for diffusive processes, and the heat conduction equation. ... -
An alternative clean-up column for the determination of polychlorinated biphenyls in solid matrices
(RSC, 2015-11)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, ... -
An alternative clean-up column for the determination of polychlorinated biphenyls in solid matrices
(Royal Society of Chemistry, 2016)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 developed ... -
Amplification of the discharge current density of lithium-ion batterieswith spinel phase Li(PtAu)0.02Mn1.98O4nano-materials
(Elsevier, 2014)In this study the synergistic and catalytic properties of a novel nano-composite cathode material ofnominal composition Li(M)xMn2-xO4(M = Pt-Au; x # 0.2) has been explored. Li(PtAu)xMn2-xO4nano-material for use in lithium-ion ... -
Analysis of Head Loss in Pipe System Components
(Mathematical Theory and Modeling, 2014)The problem under investigation is to determine the flow-field variables that is the total head which is the sum total of Elevation head, velocity head and pressure head instantaneous distributions as a function of distance ... -
Analysis of Head Loss in Pipe System Components: Quasi-one-Dimensional Nozzle Flow
(2014)The problem under investigation is to determine the flow-field variables that is the total head which is the sum total of Elevation head, velocity head and pressure head instantaneous distributions as ... -
ANALYSIS OF THE CONSUMERS’ SWITCHING BEHAVIOR FOR DIGITAL SET TOP BOXES IN KENYA
(DBA Africa Management Review, 2016)We determine the consumers’ selection criteria and explore the effectiveness of selected attitudinal, behavioral and demographic variables in discriminating between switchers and continuers of particular digital set ... -
Analytical and numerical investigation of unsteady wind for enhanced energy capture in a fluctuating free-stream
(Elsevier, 2017)Unsteady wind is characterized by low energy content and large fluctuations. A Computational Fluid Dynamics (CFD)-based method for capturing wind energy in a fluctuating free-stream, supported by analytical formulations, ... -
Analyzing Expected Returns of a Stock Using The Markov Chain Model and the Capital Asset Pricing Model
(2017)The chances of success of an investor in the stock market depends heavily on the decisions he takes based on his knowledge of the behavior of the stock market. In this study, the behavior of a stock on the Nigerian stock ... -
Anti-trypanosomal effects ofAzadiracta indica(neem)extract onTrypanosoma brucei rhodesiense-infected mice
(Eastern Journal of Medicine, 2009)Anin vivostudy was carried out to determine the anti-typanosomal effect of aqueous extracts of the barkofAzadiracta indica(neem) inTrypanosoma brucei rhodesiense-infected mice. The extracts were orallyadministeredad ... -
Application of Central Composite Design to Optimize Spawns Propagation
(Scientific Research Publishing, 2020)Despite the increased recognition of the nutritional value of the Oyster mushroom, coupled with its ability to tolerate a wide range of climatic conditions, its production is still at infancy stage with low adoption rate ... -
Application of Conditional Autoregressive Value at Risk Model to Kenyan Stocks: A Comparative Study
(Science Publishing Group, 2017-05-22)Value at Risk (VaR) became the industry accepted measure for risk by financial institutions and their regulators after the Basel I Accords agreement of 1996. As a result, many methodologies of estimating VaR models used ... -
Application of Conditional Autoregressive Value at Risk Model to Kenyan Stocks: A Comparative Study
(Science Publishing Group, 2017-05-22)Value at Risk (VaR) became the industry accepted measure for risk by financial institutions and their regulators after the Basel I Accords agreement of 1996. As a result, many methodologies of estimating VaR models used ... -
An Application Of Extreme Value Theory In Modelling Electricity Production In Kenya
(IISTE, 2014)Extreme Value Theory provides a well-established statistical model for the computation of extreme risk measure which includes, Value at Risk and Expected Shortfall. In this paper we apply Univariate Extreme Value Theory ... -
Application of extreme value theory in the estimation of value at risk in Kenyan stock market
(Int. J. Cur. Tr. Res, 2013)Most financial institutions have faced a lot of losses due to the fluctuations of commodities prices. Traditionally normal distribution was applied and could not capture rare events which caused enormous losses. The ... -
Application of Nonparametric Methods in Studying Energy Consumption
(University of Rwanda, 2011)Consumer behaviour towards different forms of energy varies over time. The variance can be so large that the quality of the estimation functional relationship between the response variable and its associated explanatory ... -
Assessing the Challenge of Settlement in Budalangi and Yala Swamp Area in Western Kenya Using Landsat Satellite Imagery
(The Open Environmental EngineeringJournal, 2011)The Budalangi area of Kenya exhibits high levels of rural poverty despite its natural resources potential and favourable climate. The area was mapped using multi-temporal remote sensing image ... -
Assessment of photo-oxidative alterations to natural organic matter in water using fluorescence excitation emission matrices and liquid chromatography-organic carbon detection techniques
(RSC, 2015)Fluorescence excitation emission matrices (FEEMs) and liquid chromatography-organic carbon detection (LC-OCD) are relatively novel techniques currently used for analysing natural organic matter (NOM) in water. Regardless ... -
Atrazine and terbuthylazine mineralization by an Arthrobacter sp. isolated from a sugarcane-cultivated soil in Kenya
(Chemosphere, 2009)A tropical soil from a Kenyan sugarcane-cultivated field showed a very high capability to mineralize 14C-ring-labeled atrazine. In laboratory experiments this soil mineralized about 90% of the applied atrazinewithin98 ...
