Browsing School of Pure and Applied Sciences by Issue Date
Now showing items 41-60 of 259
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Modulation of the interfacial electrochemistry of surfactant-functionalised polypyrrole chemical sensor systems
(Pergamon, 2011)The redox properties of electro-polymerized polypyrrole (Ppy) doped with different surfactants were studied in acid medium. It was found out that the addition of different surfactants affect the redox properties as evidenced ... -
Prediction of the Likelihood of Households Food Security in the Lake Victoria Region of Kenya
(2011)This paper considers the modeling and prediction of households food security status using a sample of households in the Lake Victoria region of Kenya. A priori expected food security factors and their measurements are ... -
Attitude of teachers and students towards the use of punishment in secondary schools in Kaloleni District of Coast province, Kenya
(2011)This study was carried out in 14 secondary schools in Kaloleni District. A descriptive approach was employed. Data were collected through the questionnaires designed for the teachers and students. The target population ... -
A silver Nanoparticle/Poly (8-Anilino-1-Naphthalene Sulphonic Acid) Bioelectrochemical Biosensor System for the Analytical Determination of Ethambutol
(2011)Ethambutol (2S, 2′S)-2, 2′-(ethane-1, 2-diyldiimino) dibutan-1-ol) is a first-line antitubercular drug effective against actively growing Mycobacterium tuberculosis. Resistance of the mycobacterium to ethambutol among ... -
Mathematical Model for DetectingDiabetes in the Blood
(2011)This study presents a new mathematical model for Blood Glucose Regulatory System(BGRS) which includes epinephrine as a third variable in the form, ˙ Y = AY, and whose solution has been analyzed for equilibrium and stability ... -
Biodegradation of phenylurea herbicide diuron by microorganisms from long-term-treated sugarcane-cultivated soils in Kenya
(Taylor & Francis, 2011)The phenylurea herbicide diuron [N-(3,4-dichlorophenyl)-N,N-dimethylurea] is widely used alone or in a broad range of herbicide formulations. Its degradation in sugarcane-cultivated soils which have been impacted by the ... -
Environmental Applications of Poly(amic acid)-based Nanomaterials
(Electronic Supplementary Material (ESI) for Journal of Environmental Monitoring, 2011) -
Mathematical Model for Detecting Diabetes in the Blood
(2011)This study presents a new mathematical model for Blood Glucose Regulatory System(BGRS) which includes epinephrine as a third variable in the form, Y˙ = AY, and whose solution has been analyzed for equilibrium and stability ... -
The Impact of Land Use Activities on Vegetation Cover and Water Quality in the Lake Victoria Watershed
(The Open Environmental EngineeringJournal, 2011)The impact of land use activities on loss of vegetation cover and water quality was assessed in three selected sites within the Lake Victoria Basin using remote sensing technologies and standard water quality ... -
Impedimetry and microscopy of electrosyntheticpoly(propylene thiophenoimine)-co-poly(3,4 ethylenedioxythiophene) dendritic star copolymer
(International Journal of Electrochemical Science, 2011)The electrochemical impedance spectroscopy of generation 2 poly(propylenethiophenoimine)-co-poly(3,4 ethylene dioxythiophene) dendritic star copolymer(G2PPT-co-PEDOT) film was studied in LiClO4solution. The results show ... -
Impedimetric Response of a Label-Free Genosensor Prepared on a 3-Mercaptopropionic Acid Capped Gallium Selenide NanocrystalModified Gold Electrode
(2011)Biocompatible and water soluble 3-mercaptopropionic acid cappedgallium selenide nanocrystals were synthesized from hydrated gallium (III) perchlorate and selenide ions. The nanocrystals were non-fluorescent but ... -
Metribuzin mobility in soil column as affected by environmental and physico-chemical parameters in Mumias sugarcane zone, Kenya
(Asian Research Publishing Network (ARPN)., 2011-03)The physico-chemical parameters of soil, influences the soil solution characteristics and that may affect the sorption of soil applied herbicides. The present investigation reports the influence of physico-chemical parameters ... -
Biodegradation of s-triazine herbicide atrazine by Enterobacter cloacae and Burkholderia cepacia sp. from long-term treated sugarcane-cultivated soils in Kenya
(Taylor & Francis, 2011-09-26)In this study soils from sugarcane-cultivated fields were screened for bacterial species capable of atrazine (6-chloro-N2-ethyl-N4isopropyl-1,3,5-triazine-2,4-diamine)degradationduetolongexposureofthesoilstothisherbicide. ... -
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. ... -
Indifference Pricing of Contingent Claims on NIG L´evy Model
(2012)We develop an attractive and tractable model to describe the financial time series of stock prices observed at the Nairobi exchange market then price financial derivatives on the underlying stock. The stock price process is ... -
Reduction of Hexavalent Chromium Using Naturally-Derived Flavonoids
(American Chemical Society, 2012)Quercetin is a naturally occurring flavonoid that is known to form complexes with metals; a process that reduces the environmental availability of toxic metals such as chromium. We hereby report the first evidence of the ... -
Bootstrap Uniform Confidence Bands for A Local Linear Nonparametric Estimator and Applications to Financial Risk Management
(2012)This paper considers the problem of bootstrapping a local linear estimator in conditional quantile estimation of a financial time series assuming independent and identically distributed errors. A nonparametric ... -
Conditional CAPM in Financial Risk Management: A Quantile Autoregression approach
(2012)The study aims to provide a comprehensive description of dependence pattern of a stock by studying a range of betas derived as quantiles of conditional return distribution using quantile regression based on moving window ... -
Kinetic derivation of a Hamilton-Jacobi traffic flow model
(2012)Kinetic models for vehicular traffic are reviewed and considered from the point of view of deriving macroscopic equations. A derivation of the associated macroscopic traffic flow equations leads to different types of ... -
Characterization of antibiotic resistance in environmental enteric pathogens from Kibera slum in Nairobi-Kenya
(Academic Journals, 2012)Kibera slum is characterized by poor sanitation hence the frequent outbreaks of diarrheal diseases. Emergence of antibiotic resistance by diarrhoea-causing bacteria is an inevitable challenge in the area. Diarrhea-causing ...