School of Biological, Physical, Mathematics & Actuarial Sciences: Recent submissions
Now showing items 201-220 of 254
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Functional convergence in water use of trees from different geographical regions: a meta-analysis
(Springer-Verlag Berlin Heidelberg, 2013-06)Functional convergence in water use of trees across species from diverse geographic locations was examined using data on tree water use parameters, with the intention of gaining an understanding on the capacity for water ... -
Membership in wildlife clubs of Kenya and its influence on beliefs about wildlife
(Taylor & Francis, 2008-05-16) -
Persistence and loss of cultural values of Tiriki Sacred Groves in Hamisi District, Kenya: Implications for management (RH: cultural values of Tiriki Sacred Groves)
(Taylor & Francis Online, 2017-10-24)Negligence and desecration observed among Tiriki sacred groves during causal visits by the authors in January 2007 was associated with their loss of cultural values and protection among local people. Household interviews ... -
Changes in forest soil properties in different successional stages in lower tropical China
(Plosone.org, 2013)Background: Natural forest succession often affects soil physical and chemical properties. Selected physical and chemical soil properties were studied in an old-growth forest across a forest successional series in Dinghushan ... -
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. ... -
Effects of nitrogen deposition on soil organic carbon fractions in the subtropical forest ecosystems of S China
(2012)Experiments were conducted between 2003 and 2008 to examine how N additions influence soil organic C (SOC) and its fractions in forests at different succession stages in the subtropical China. The succession stages included ... -
Diffuse PAR irradiance under clear skies in complex alpine terrain
(Elsevier, 2004)The diffuse component of photosynthetically active radiation (PAR) is important for models that calculate carbon dioxide uptake in photosynthesis by vegetation. Few PAR measurements are usually available, especially in ... -
Manipulative lowering of the water table during summer does not affect CO2 emissions and uptake in a fen in Germany
(Ecological Society of America, 2011)We simulated the effect of prolonged dry summer periods by lowering the water table on three manipulation plots (D1–3) in a minerotrophic fen in southeastern Germany in three years (2006–2008). The water table at this site ... -
Evaluation of seasonal variation of MODIS derived leaf area index at two European deciduous broadleaf forest sites
(Elsevier, 2005)We present an evaluation of the operational MODIS Leaf Area Index (LAI) product over two temperate deciduous forests and focus on the seasonal variation. Two EUROFLUX beech (Fagus sylvatica) sites, Hesse, France and Sorø, ... -
An ethnobotanical study of medicinal plants used by the Nandi people in Kenya
(Elsevier, 2007)Ethnopharmacological relevance The study of local knowledge about natural resources is becoming increasingly important in defining strategies and actions for conservation or recuperation of residual forests. Aims of the ... -
Finite element approach to the solution of fourth order beam equation
(IJESM, 2013-06)Finite element method is a class of mathematical tool which approximates solutions to initial and boundary value problems. Finite element, basic functions, stiffness matrices, systems of ordinary differential equations and ... -
Finite difference solution of (2+1)-dimensional sine-gordon equation: A model for investigating the effects of varying surface damping parameter on josephson current flowing through the long josephson junction
(International Journal of Science and Research (IJSR), 2015)Modeling of some physical phenomena and technological processes taking into account dissipation leads to the Sine-Gordon equation with the first time derivative. The (2+1) Sine-Gordon equation with the first time derivative ... -
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 ... -
Morphometric study of Senna didymobotrya (Fresen.) H. S. Irwin and Barneby in Kenya
(Journal of Natural Sciences Research, 2017)Herbal medicine has been used for many years and it remains widespread in developing countries while the use of complementary alternative medicine is increasing rapidly in developed countries. Senna didymobotrya is important ... -
Forensic estimation of time of death: A mathematical model
(International Journal of Management, IT and Engineering, 2013-07)In this paper we establish the exact time of death of a murdered person. This leads to an ordinary differential equation whose solution has been analyzed to provide the approximate time of death. Forensic expert will try ... -
Occurrence of nodulation in leguminous trees in Kenya
(Journal of Tropical Microbiology and Biotechnology, 2005)Exploitation of the potential for nitrogen fixing trees, soil improvement and multipurpose use, requires a good knowledge of their nodulation capabilities and agrosilvicultural manipulation. Nitrogen Fixation in some ... -
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 ... -
Morphological, genetic and symbiotic characterization of root nodule bacteria isolated from Bambara groundnuts (Vigna subterraneaL. Verdc) from soils of Lake Victoria basin, western Kenya.
(Journal of Applied Biology and Biotechnology, 2015)Low soil nitrogen (N) is a major constraint for sustainable crop production in smallholder farming systems in Africa. Grain legumes such as bambara groundnuts (Vigna subterraneaL. Verdc). can form N fixing symbiotic ... -
Functions of multi-pendula system spatial motion
(Published by The Standard International Journals, 2017)A study has been done using generalized coordinates system with the application of the Lagrangian formalism for n mass units linearly connected to move in space. Lagrangian equations have been developed and used throughout ... -
Competition in Kenyan soils between Rhizobium leguminosarum biovar phaseoli strain Kim5 and R. tropici strain CIAT899 using the gusA marker gene
(Kluwer Academic Publishers, 1998-07)The contribution of appropriate inoculum strains to more efficient nitrogen fixation by legumes has been difficult to assess due to the laborious nature of the assays involved in assessing establishment of inoculum strains ...
