Browsing School of Biological, Physical, Mathematics & Actuarial Sciences by Issue Date
Now showing items 81-100 of 246
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Finite difference solution of (1+1) sinegordon equation: A mathematical model for the rigid pendula attached to a stretched wire
(The SIJ Transactions on Computer Science Engineering & its Applications (CSEA), 2015-04)The nonlinear (1+1) Sine-Gordon equation that governs the vibrations of the rigid pendula attached to a stretched wire is solved. The equation is discretized and solved by Finite Difference Method with specific initial and ... -
Field Evaluation of a Push-Pull System to Reduce Malaria Transmission
(Plos One, 2015-04-29)Malaria continues to place a disease burden on millions of people throughout the tropics, especially in sub-Saharan Africa. Although efforts to control mosquito populations and reduce human-vector contact, such as long-lasting ... -
Effects of land use practices on soil organic carbon, nitrogen and phosphorus in river Nzoia drainage basin, Kenya
(Science Publishing Group, 2015-06-18)Land use activities along River Nzoia Drainage Basin, Kenya, include cultivation along the river banks, over grazing, deforestation, draining of wetlands for horticulture, harvesting of sand and brick-making. These activities ... -
Bioactive carbazole alkaloids from Alysicarpus ovalifolius (Schumach)
(The Korean Society for Applied Biological Chemistry, 2015-08-19)Phytochemical and biological evaluation of the stem bark of Alysicarpus ovalifolius led to the isolation of three carbazole alkaloids identified as mohanimbine (1), koenimbine (2) and koenidine (3) along with quercetin ... -
Innovative Tools and OpenHDS for Health and Demographic Surveillance on Rusinga Island, Kenya
(BMC, 2015-09-01)Health in low and middle income countries is on one hand characterized by a high burden associated with preventable communicable diseases and on the other hand considered to be under-documented due to improper basic health ... -
Construction of nominal yield curve for Nairobi securities exchange: an improvement on monotone preserving r(t)t interpolation method
(Scientific Research Publishing Inc., 2015-11)There is no agreed-upon method used to construct yield curves at the Nairobi Securities Exchange. The existing practice is that each financial company uses in-house methods to construct the yield curves for their pricing ... -
Conditional variations in temperature response of photosynthesis, mesophyll and stomatal control of water use in rice and winter wheat
(2016)Environmental responses of photosynthesis and CO2 diffusive conductance as fundamental information for photosynthesis-transpiration coupled model have been increasingly concerned while are still research areas with unanswered ... -
Nutritional and developmental influences on components of rice crop light use efficiency
(Elsevier, 2016)Light use efficiency (LUE) plays a vital role in determination of crop biomass and yield. Important components of LUE, i.e. canopy structure, nitrogen distribution, photosynthetic capacity and CO2 diffusion conductance ... -
Soil water availability and capacity of nitrogen accumulation influence variations of intrinsic water use efficiency in rice
(Elsevier, 2016)Leaf intrinsic water use efficiency (WUEi) coupling maximum assimilation rate (Amax) and transpirable water lost via stomatal conductance (gsc) has been gaining increasing concern in sustainable crop production. Factors ... -
Canopy scale CO2 exchange and productivity of transplanted paddy and direct seeded rainfed rice production systems in S. Korea
(Elsevier, 2016)Rice (Oryza sativa L.) is a primary food crop that supports more than half the world population. Paddy rice accounts for more than 75% of the total global rice production but requires large amounts of water for irrigation. ... -
Supplement understanding of the relative importance of biophysical factors in determination of photosynthetic capacity and photosynthetic productivity in rice ecosystems
(Elsevier, 2016)Extensive variation in gross primary production (GPP) among growing seasons in rice ecosystems, which has previously been reported, may be caused by a number of biophysical factors. Two field-based studies, one on Oryza ... -
On the Effects of Motocycle Accidents and its Trends (A Case of Kenya)
(JKUAT press, 2016)This study analyzes recent data of accidents’ prevalence in Kenya and investigates whether there might be new trends in areas formerly not prone to accidents. Polynomials of order 6 are found best suited for accidents’ ... -
Mathematical model for co-infection of HIV/AIDS and pneumonia with treatment
(International Journal of Scientific Engineering and Applied Science, 2016)Pneumonia occurs commonly in HIV-infected patients. In this paper, we study a simple mathematical model for the co-infection of HIV/AIDS and Pneumonia. We establish that the model is well presented epidemiologically and ... -
Numerical solution of dynamic vibration equation, ܠሷൌ ܐ܋܍ܛ ܠ
(IJEMS, 2016)In this paper, we examine conservative autonomous dynamic vibration equation, f(x) = sech x which is time vibration of the displacement of a structure due to the internal forces, with no damping or external forcing. Numerical ... -
Two dimensional mathematical models for convective-dispersive flow of pesticides in porous media
(International Journal of Engineering Science and Computing, 2016)The transport of solutes through porous media where chemicals undergo adsorption or change process on the surface of the porous materials has been a subject of research over the years. Use of pesticides has resulted in ... -
The effect of varying the capping agent of magnetic/luminescent Fe3O4–InP/ZnSe core–shell nanocomposite
(ELSEVIER, 2016-01)Magnetic–luminescent nanoparticles have shown great promise in various biomedical applications namely: contrast agents for magnetic resonance imaging, multifunctional drug carrier system, magnetic separation of cells, cell ... -
Development, characterization and antimalarial efficacy of dihydroartemisinin loaded solid lipid nanoparticles
(ELSEVIER, 2016-04)Effective use of dihydroartemisinin (DHA) is limited by poor water-solubility, poor pharmacokinetic profile and unsatisfactory clinical outcome especially in monotherapy. To reduce such limitations, we reformulated DHA ... -
Spatially Variable Risk Factors for Malaria in a Geographically Heterogeneous Landscape, Western Kenya: An Explorative Study
(Malaria Journal, 2016-06-01)Large reductions in malaria transmission and mortality have been achieved over the last decade, and this has mainly been attributed to the scale-up of long-lasting insecticidal bed nets and indoor residual spraying with ... -
Enhancing Attraction of African Malaria Vectors to a Synthetic Odor Blend
(SpringerLink, 2016-06-27)The deployment of odor-baited tools for sampling and controlling malaria vectors is limited by a lack of potent synthetic mosquito attractants. A synthetic mixture of chemical compounds referred to as “the Mbita blend” ... -
The Effect of Mass Mosquito Trapping on Malaria Transmission and Disease Burden (Solarmal): A Stepped-Wedge Cluster-Randomised Trial
(The Lancet, 2016-09)Odour baits can attract host-seeking Anopheles mosquitoes indoors and outdoors. We assessed the effects of mass deployment of odour-baited traps on malaria transmission and disease burden. We installed solar-powered ...