Browsing School of Pure and Applied Sciences by Title
Now showing items 71-90 of 259
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Ecology and Management of Lake Naivasha, Kenya, in Relation to Climatic Change, Alien Species' Introductions, and Agricultural Development
(University Of Nairobi, 1990)Lake Naivasha is an important freshwater resource for Kenya's foreign-currency-earning agriculture and tourism, and for water-supply. It has always experienced extensive water-level fluctuations as a consequence of irregular ... -
The efect of various fuels on the yield, structural and optical properties zinc zirconate nanocomposite
(Springer Berlin Heidelberg, 2020)Various types of fuels were used in a low-temperature solution combustion synthesis of zinc zirconate nanocomposite at a pH of 7. In the synthesis, the fuels used were citric acid, glycine, urea, hydrazine hydrate, and ... -
Effect of Occupation on the Levels of Lead in Human Blood in Kenya
(Chemistry and Materials Research, 2013)The occupation an individual is involved in exposes him or her to different levels of lead from the work environment. The main occupation of the study subjects included working in the petrol stations, ... -
Effects of carbon amendment on in situ atrazine degradation and total microbial biomass
(ARPN Journal of Agricultural and Biological Science, 2013)This study elucidates the effects of carbon amendment on metabolic degradation of atrazine (6-chloro-N2-ethyl-N4-isopropyl-1,3,5triazine-2,4-diamine) and total microbial biomass in soil. Degradation of 14C-ring-labelled ... -
Effects of Magnetic Induction on MHD Boundary LayerFlow of Dusty Fluid over a Stretching Sheet
(2018)This paper investigates effects of induced magnetic field on the MHD laminar boundary dusty fluid flow over a stretching flat plate surface. The dusty fluid flow is influenced by an external uniform magnetic ... -
Effects of the direction of a transverse magnetic field on unsteady MHD Couette flow with suction and injection
(International Journal of Education and Research, 2015)In this paper, the problem of an unsteady magnetohydrodynamic viscous incompressible electrically conducting fluid flow subjected to a constant pressure gradient in the presence of a uniform transverse magnetic field applied ... -
Electrochemical Aptasensor for Endocrine Disrupting 17β-Estradiol Based on a Poly(3,4-ethylenedioxylthiopene)-Gold Nanocomposite Platform
(Molecular Diversity Preservation International, 2010)A simple and highly sensitive electrochemical DNA aptasensor with high affinity for endocrine disrupting 17β-estradiol, was developed. Poly(3,4-ethylenedioxylthiophene) (PEDOT) doped with gold nanoparticles (AuNPs) was ... -
Electrochemical Aptasensor for Endocrine Disrupting 17β-Estradiol Based on a Poly(3,4-ethylenedioxylthiopene)-Gold Nanocomposite Platform
(Molecular Diversity Preservation International, 2010)A simple and highly sensitive electrochemical DNA aptasensor with high affinity for endocrine disrupting 17β-estradiol, was developed. Poly(3,4-ethylenedioxylthiophene) (PEDOT) doped with gold nanoparticles (AuNPs) was ... -
Electrochemical detection of dioctyl phthalate using molecularly imprinted polymer modified screen-printed electrodes
(Elsevier, 2022)We report the investigation of electropolymerised molecularly imprinted polymers (E-MIPs) for the determination of dioctyl phthalate (DOP). Low-cost and eco-friendly commercially available screenprinted electrodes (SPEs) ... -
Electrochromism in Self-Assembled Porous Thin Films of Hexagonal Tungsten Trioxide Microspheres Prepared by Aqueous Chemical Growth
(International Journal of ELECTROCHEMICAL SCIENCE, 2014-03)WO3 thin films were grown by self-assembly, at 80-90 ˚C, on un-seeded conductive SnO2:F-glass through the method of Aqueous Chemical Growth (ACG). The thin films produced contained urchin-like microspheres of WO3, 1-2 μm ... -
Electronics of Conjugated Polymers (I): Polyaniline
(International Journal of ELECTROCHEMICAL SCIENCE, 2012-12)Conducting polymers have elicited much interest among researchers because of their reasonably good conductivity, stability, ease of preparation, affordability and redox properties compared to other organic compounds. In ... -
Elliptic Curve Digital Signatures and Their Application in the Bitcoin Crypto-currency Transactions
(2017-10)The Elliptic Curve Digital Signature Algorithm (ECDSA), defines a technique for generating and validating digital signatures. We start by reviewing the mathematics behind the Digital Signature Algorithm (DSA) and its ... -
Empirical and numerical analysis of small wind turbine aerodynamic performance at a plateau terrain in Kenya
(2016)Kenya's energy depends on fossil fuels and the country is yet to embrace alternative sources that are environmentally friendly. In this paper, empirical and computational approaches are presented to investigate aerodynamic ... -
Enhanced hexazinone degradation by a Bacillus species and Staphylococcus species isolated from pineapple and sugarcane cultivated soils in Kenya
(Environmental Chemistry and Ecotoxicology, 2022)In this work, hexazinone-degrading bacterial strains from Kenyan tropical soils with long term application history were isolated and identified. Non-sterile soils from sugarcane and pineapple cultivated fields with over ... -
Environmental Applications of Poly(amic acid)-based Nanomaterials
(Electronic Supplementary Material (ESI) for Journal of Environmental Monitoring, 2011) -
Estimating Dependence Structure and Risk of Financial Market Crash
(Canadian Center of Science and Education, 2016-10)In this paper, we estimate the dependence structure between international stock markets using copulas. Different relationships that exist in normal and extreme periods were estimated using Clayton copula. The Inference ... -
Estimation of Conditional Weighted Expected Shortfall under Adjusted Extreme Quantile Autoregression
(Scientific Research Publishing Inc., 2021-07-14)In this paper, we present an estimator that improves the well-calibrated coherent risk measure: expected shortfall by restructuring its functional form to incorporate dynamic weights on extreme conditional quantiles used ... -
Estimation of Critical Streamflow Discharge Level Using Nonparametric Quantile Regression Model
(2016)Various parametric models have been designed to analyze volatility in river flow time series data. For maximum likelihood estimation these parametric methods assumes a known conditional distribution. This paper considers ... -
ESTIMATION OF EXTREME VALUE AT RISK IN RWANDA EXCHANGE RATE
(European Centre for Research Training and Development UK, 2014-12)Estimating the probability of rare and extreme events is a crucial issue in the risk estimation of exchange rate returns. Extreme Value Theory (EVT) is a well-developed theory in the field of probability that studies the ... -
Estimation of Risk in Rwanda Exchange Rate
(2014)Generalized Autoregressive Conditional Heteroskedasticity (GARCH) approach was applied to Rwanda Exchange rate returns to estimating current volatility. We fitted autoregressive (AR) model with GARCH errors to the daily ...