Faculty of Science & Technology (FST): Recent submissions
Now showing items 3261-3280 of 4284
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Is the fast growth of an equatorial Micropterus salmoides population explained by high water temperature
(School of Biological Sciences, University of Nairobi, Nairobi, KenyaDepartment of Biology, University of Leicester, Leicester, UKCentre for Conservation Ecology and Environmental Change, School of Conservation Sciences, Bournemouth University, Poole, Dorset, UK, 2010)Marginal increment analysis of scales collected from the introduced Micropterus salmoides population of Lake Naivasha, Kenya revealed the formation of an annual growth check, validating their use to age individual fish. ... -
Climate information in decisionmaking in the Greater Horn of Africa: lessons and experiences
(College of Biological Sciences, University of Nairobi, 2009)The Intergovernmental Authority on Development (IGAD) Climate Prediction and Applications Centre (ICPAC) is a specialized regional centre charged with the responsibility of climate monitoring, prediction, early ... -
The dissipation of malathion and dimethoate from the pea plants (Pisum sativum) under controlled conditions
(University of NairobiDepartment of Chemistry, University of NairobiDepartment of Chemistry, Maseno University, 2000)14C‐malathion, [S‐1,2‐bis(ethoxycarbonyl)ethyl O,O‐dimethyl phosphorodithioate] and 14C‐dimethoate, [O,O‐dimethyl S‐(N‐methylcarbamoylmethyl)phosphorodithioate] have been administered to leaves of pea (Pisum sativum) plants ... -
The dissipation and degradation of methoxy‐14C malathion in soil under tropical conditions
(University of NairobiDepartment of Chemistry, University of NairobiDepartment of Chemistry, Maseno University, 2000)l4C‐malathion[S‐1,2‐bis(ethoxycarbonyl) ethyl O,O‐dimethyl phosphorodithioate] has been studied in soil under tropical field conditions by applying the 14C‐malathion pesticide to soil in Polyvinyl chloride (PVC) pipes and ... -
Seasonal variation in concentrations of organochlorine pesticide residues in tropical estuarine sediments along the Indian Ocean Coast of Kenya
(University of NairobiDepartment of Chemistry, Faculty of Science and Engineering, Western University College of Science and TechnologyDepartment of Chemistry, Faculty of Science, College of Biological and Physical Sciences, University of NairobiDepartment of Chemistry, Faculty of Science, Maseno University, 2007) -
Heavy Metals in Water and Surface Sediments in Winam Gulf of Lake Victoria, Kenya
(University of NairobiDepartment of Chemistry, College of Biological and Physical Sciences, University of NairobiDepartment of Chemistry, Maseno University, 2006-09) -
Water Quality and Trace Metal Distribution in a Pristine Lake in the Lake Basin in Kenya
(University of NairobiDepartment of Chemistry, College of Biological and Physical Sciences, University of NairobiDepartment of Chemistry, Maseno University, 2008-04)Water and surface sediment samples taken from various locations within Lake Kanyaboli in the Lake Victoria basin were analysed to determine the concentration and distribution of heavy metals. There were wide ranges in ... -
Studies of dioxamide and dithio-oxamide metal complexes. Part 2. Synthesis and spectral characterisation of RNHC(S)C(S)NHR (R = alkyl or aryl) complexes with SbX3(X = Cl or Br), BiCl3, SnX4(X = Cl or Br), and TiCl4. Crystal and molecular structures of NN′-di-isopropyldithio-oxamide (L3) and SbCl3(L3)1.5
(University of NairobiCollege of Biological and Physical Sciences, 1984)The synthesis and characterisation of a variety of SbX3L1.5(X = Cl or Br), BiCl3L2, SnX4L (X = Cl or Br), and TiCl4L complexes [where L = RNHC(S)C(S)NHR for R = Me, Et, Pri, Bun, cyclo-C6H11, or CH2Ph] is described. In all ... -
Effect of soil fertility manangement practices and Bacillus subtilis on plant parasitic nematodes associated with common bean, Phaseolus vulgaris
(School of Biological Sciences, 2011) -
Some group VB chloride complexes with thiourea and N,N′-diethyl-dithiooxamide
(University of NairobiDepartment of Chemistry,Department of Chemistry and Molecular Sciences, University of Warwick, 1979)The following complexes of thiourea(tu) and N,N′-diethyl-dithioxamide (Et2DH2) with phosphorous (III), arsenic(III), antimony(III) and bismuth(III) have been prepared and characterises: PCl3(tu) (DMF)2; AsCl3(tu)3(DMSO)3: ... -
Distribution and Dissipation of Carbofuran in a Paddy Field in the Kano Plains of Kenya
(University of NairobiDepartment of Chemistry, College of Biological and Physical Sciences, University of Nairobi, 1996-04) -
Use of geographical information system to determine incidence of Aspergillus section flavi in different soils in Kaiti, Kenya
(School of Biological Sciences, 2012) -
Status of organochlorine (DDT) pollutants and steps toward electrocatalytic reductions
(University of NairobiDepartment of Chemistry, University of Nairobi, 2001)The accumulation of DDT in the environment over the years is a major concern in the world today. The extent to which DDT may be absorbed and translocated from 14C-p,p¢-DDT contaminated soils into cowpea plant tissues, and ... -
Cost sharing in public universities: a Kenyan case study
(University of NairobiDepartment of Chemistry, University of Nairobi, 1997)This case study posits a model of key policy issues in the cost and financing of University Education. Within this framework we review government policy and existing cost sharing mechanisms. This is then analysed within ... -
Adsorption/Desorption and Mobility of Carbofuran in Soil Samples from Kenya
(University of NairobiDepartment of Chemistry, College of Biological and Physical Sciences, University of Nairobi, 1996-04) -
The effect of boiling on the removal of persistent malathion residues from stored grains
(University of NairobiDepartment of Chemistry, College of Biological and Physical Sciences, University of Nairobi, 2002)This study aimed at finding the fate of malathion in maize grains and beans stored in a tropical laboratory for 12 months at temperatures of 20–24°C, relative humidity of 42–80% and grain moisture contents of 11.7–12.5% ... -
Fate of 14c‐P,P'‐DDT in Kenyan tropical soils
(University of NairobiDepartment of Chemistry College of Biological and Physical Sciences, University of Nairobi, 1994)The dissipation and degradation of 14C‐p,p'‐DDT in tropical soils of Nairobi were studied under field and laboratory conditions for a period of six months. DDT was found to dissipate much more rapidly from the soil under ... -
Populations in nests of the termite Macrotermes jeanneli in Kenya
(University of NairobiCollege of Biological and Physical Sciences, 1992)Estimates were made of the populations of seven nests of Macrotermes jeanneli of different sizes in Kenya. Caste and instar composition were examined, and relationships of these to the dimensions of the mound were investigated. ... -
Meteorological Aspects of Gaussian Diffusion Modelling in Tropical Areas (A case study)
(Department of Metereology, 1986) -
Regeneration of spent bleaching earth and its adsorption of copper (II) ions from aqueous solutions
(Department of Chemistry, Kenyatta UniversityDepartment of Chemistry, University of Nairobi,, 2009)This study was designed to provide a comprehensive investigation into heat and acid reactivation of spent bleaching earth (SBE) and adsorption of Cu(II) ions from aqueous solutions. Heat treatment was the master variable ...
