School of Pure and Applied Sciences: Recent submissions
Now showing items 141-160 of 259
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Conditional Dependence Modellingwith Regular Vine Copulas
(Journal of Statistical and Econometric Methods, 2019)Modelling sophisticated high-dimensional dependence structures forfinancial assets in a portfolio framework require flexible dependencemodels. In this paper, a regular vine-copula based model is employed toanalyze financial ... -
Study of atrazine degradation in soil fromKenyan sugarcane-cultivated fields in controlledlaboratory conditions
(2009)A study to compare the extent of atrazine mineralization in soils from Kenyan sugarcane-cultivated fields with and without history of atrazine use was carriedout in the laboratory under controlled conditions. The study was ... -
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 ... -
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 ... -
METRIBUZIN MOBILITY IN SOIL COLUMN AS AFFECTED BY ENVIRONMENTAL AND PHYSICO-CHEMICAL PARAMETERS IN MUMIAS SUGARCANE ZONE, KENYA
(ARPN Journal of Agricultural and Biological Science, 2011)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. ... -
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 ... -
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 ... -
Residue levels and dis charge loads of antibiotics in waste water treatment plants (WWTPs), hospital lagoons, and rivers within Lake Victoria Basin, Kenya
(Environ Monit Assess, 2016)The detection of antibiotics in water systems has instigated great environmental concern due to the toxicological effects associated with these compounds. Their discharge into the environment results from the ubiquity of ... -
The dissipation of malathion and dimethoate from the pea plants (Pisum sativum) under controlled conditions
(Taylor and Francis, 2000)4C-malathion, [S-1,2-bis(ethoxycarbonyl)ethyl O,O-dimethyl phosphorodithioate] and 14C-dimethoate, [O,O-dimethyl S-(N-methylcarbamoylmethyl)phosphorodithioate] have been admin-istered to leaves of pea (Pisum ... -
THE MAJOR ENVIRONMENTAL FACTORS THAT INFLUENCE RAPID DISAPPEARANCE OF PESTICIDES FROM TROPICAL SOILS IN KENYA
(Toxicological & Environmental Chemistry, 2001)Results of field and laboratory studies on adsorption/desorption, leaching, dissipation, bound residue formation and metabolism of DDT, DDE, lindane, parathion, malathion, dimethoate and carbofuran in tropical soils in ... -
Dissipation Behavior of Malathion and DimethoateResidues from the Soil and Their Uptake by Garden Pea(Pisum sativum)
(Environmemental Contamination and Toxicology, 2000)The contamination of soil by pesticide chemicals can occur through direct application to control some inhabiting insect pests of a variety of economic plants while indirect avenues can occur through aerial ... -
Social Value Formation and Switching toTtithonia in Nzoia River drainage
(Global Business & Economics Anthology, 2010)Following Ozaki (2009) the paper examines positive social values for switching from inorganic fertilizers to* tithonia in the NRDB. The predominance of sugar cane production in the NRDB generates immense water 3 pollutants ... -
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 ... -
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, ... -
The Influence of Filter Mud Compost and Tithonia diversifolia Leaves on the Dissipation of Diuron in Soils within the Nzoia River Drainage Basin, Kenya
(Springer, 2012-05-22)The aim of the study was to evaluate the environmental impact of filter mud compost and Tithonia diversifoila amendments on the dissipation of diuron in sugarcane cultivated soils. Filter mud compost is the by-product of ... -
Heat and Mass Transfer Pasta Semi-Infinite Vertical Porous Plate in MHD Flows in Turbulent Boundary Layer
(World Journal of Research and Review (WJRR), 2018)This study addresses the problem of unsteady free convection incompressible MHD fluid flow past a semi-infinite vertical porous plate in the presence of a strong magnetic field inclined at an angle to the plate with Hall ... -
Simulation of Dimple Characteristics on the Trajectories of a Dimpled Sphere (Golf Ball) in Motion
(2018)A mathematical model describing the flight motion of a golf ball is developed, and the effects of dimple characteristics are studied. Using the Newton’s second law of motion, the equations governing the motion of the golf ... -
Modeling Traffic Flow on Multi-Lane Road: Effects ofLane-Change Manoeuvres Due to an On-ramp
(Global Journal of Pure and Applied Mathematics, 2018)Traffic breakdown is the main cause of vehicle traffic congestion in our multi-lane roads due to highway bottlenecks such as lane-drops, on and off-ramps. In this study the three phase traffic flow theory is outlined and ... -
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 ...
