Browsing Staff Publications by Issue Date
Now showing items 21-40 of 908
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Use of Computer-Based Technologies and Internet-Based Audio Material in Instruction in K-12 Classrooms
(Association for the Advancement of Computing in Education (AACE), 2004)The Historical Voices Educators' Forum project concerns itself with the educational use of authentic aural artifacts in a bid to improve teachers' practices and pedagogy. The Forum aims to disseminate digitized materials ... -
Kinetics of the Alkaline Phosphatase Catalyzed Hydrolysis of Disodium p-Nitrophenyl Phosphate: Effects of Carbohydrate Additives, Low Temperature, and Freezing
(PubMed, 2004)The alkaline phosphatase catalyzed hydrolysis of disodium-p-nitrophenyl phosphate was studied in four model systems comprising sucrose, maltodextrin, carboxymethylcellulose (CMC), and CMC-lactose in a temperature range of ... -
Proinflammatory cytokine expression in the early phase of Trypanosoma brucei rhodesiense infection in vervet monkeys (Cercopithecus aethiops)
(2004)A vervet monkey model of trypanosomiasis was used to study inflammatory cytokine responses in serum and cerebrospinal fuid (CSF). Gamma interferon levels were transiently up-regulated in serum between days 6 and 8 of ... -
Seasonal time series forecasting: A comparative study of ARIMA and ANN models
(African Journal of Science and Technology (AJST), 2004)This paper addresses the concerns of Faraway and Chatfield (1998) who questioned the forecasting ability of Artificial Neural Networks (ANN). In particular the paper compares the performance of Artificial Neural Networks ... -
Influence of cyclophosphamide on the haematological profile of laboratory bred African soft-furred rats (Mastomys natalensis)
(2005)The African soft-furred rat (Mastomys natalensis) has been shown to be a possible model for propagation of Trypanosoma brucei gambiense. This study aimed at determining the baseline biological reference values and reproductive ... -
Seasonal time series data imputation: comparison between feed forward neural networks and parametric approaches
(JKUAT Press Ltd, 2005)Missing data in a time series may be an obstacle that may prevents further analysis of the available series either for control, explanations or forecasting. This paper addresses the problem of "‘filling in"' missing data ... -
Population levels of indigenous bradyrhizobia nodulating promiscuous soybean in two Kenyan soils of the semi-arid and semi-humid agroecological zones
(Journal of Agriculture and Rural Development in the Tropics and Subtropics (JARTS), 2006)Soybeans grown in Africa have been selected to nodulate effectively with indigenous Bradyrhizobium spp. populations since Bradyrhizobium japonicum populations are considered absent or in very low numbers in African soils. ... -
Antibiotic resistance of bacteria isolated from Nairobi River
(2006)This study aimed to evaluate the antibiotic resistance of bacteria isolated from six sites along the pollution gradient of Nairobi River. Bacteria were isolated by standard Methods and grouped into 3 categories; enteric ... -
Isolation, molecular characterization and evaluation of local isolates of bacillus thuringiensis against the larger grain borer Prostephanus Truncatus (Horn) And The Maize Weevil Sitophilus Zeamais (Motsch)
(Kenya Agricultural Research Institute, Nairobi (Kenya), 2006) -
Haematology of experimental Trypanosoma brucei rhodesiense infection in vervet monkeys
(African Journal of Health Sciences,, 2006)Haematological aberrations associated with human infective trypanosomes were investigated in the vervet monkey model of the Rhodesian sleeping sickness. Four monkeys were infected intravenously with 104 Trypanosoma brucei ... -
Non-response weighting adjustment approach in survey sampling
(JKUAT Press Ltd, 2006)Non-response problem is an issue of great concern to all the researchers because it pervades almost all survey research. This ultimately creates potential for bias. The higher the non-response rate the greater the bias if ... -
Evaluation of nitrogen fixation using 15N dilution methods and economy of a maize-tepary bean intercrop farming system in semi-arid SE-Kenya
(Springer, Dordrecht, 2007)Tepary bean has become popular among poor small-scale farmers in semi-arid Kenya, where it is intercropped with maize. This study aimed at i) evaluating the N-economy of maize/tepary bean intercrop versus sale crop using ... -
A botanical inventory and diversity assessment of Mt. Marsabit forest, a sub-humid montane forest in the arid lands of northern Kenya
(African Journal of Ecology, 2007)A botanical inventory and diversity of trees, shrubs (‡5cm diameter at breast height [dbh]), herbs, climbers and lianas was assessed in plots (154) of 20 · 5 m in Mt. Marsabit forest, northern Kenya. We recorded 52 species ... -
Hematological changes in vervet monkeys (Chlorocebus aethiops) during eight months' adaptation to captivity
(American Journal of Primatology, 2007)This study investigated fluctuations in hematological values of 50 wild-caught vervet monkeys (African green monkeys, grivets, Chlorocebus aethiops) during habituation to captivity. The monkeys were categorized into four ... -
Development of a rodent model for late stage rhodesian sleeping sickness
(National Research Center for Protozoan Diseases, 2007)A mouse model of Trypanosoma brucei rhodesiense that can be used in pathogenesis and drug studies for Human African Trypanosomosis (HAT) has so far not been developed. In an attempt to develop such a model, a study was ... -
Lymphosarcoma in Adult African Green Monkeys (Chlorocebus Aethiops)
(Journal of Laboratory Animal Scienc, 2007)The clinical observations and pathological manifestations of lymphosarcoma in two African green monkeys are described. Monkeys had been caught from the wild. Prior to the development of neoplasms one monkey had been ... -
Polyploidy Breeding of African Nightshade (Solanum section Solanum)
(International Journal of Plant Breeding, 2007)The perception of African nightshades (Solanum section Solanum) as “healthy” foods, supported by documentation of their high nutritional and medicinal benefits, has led to a sudden and steady upsurge in their consumption, ... -
Nonparametric model assisted model calibrated estimation in two stage survey sampling
(JKUAT Press Ltd, 2007) -
Partial Fertility Restoration as Affected by Night Temperature in a Season-dependent Male-sterile Mutant Tomato, Lycopersicon esculentum Mill.
(Journal of the Japanese Society for Horticultural Science, 2007-03-13)This study was conducted to investigate the influence of night temperature on the restoration of fertility in a season-dependent male-sterile tomato mutant (T-4). Plants were grown in greenhouses, in which minimum and ... -
Floral Genetics of African Nightshade (Solanum section Solanum)
(International Journal of Plant Developmental Biology, 2007-04-09)Solanum section Solanum, centering on the species commonly known as African nightshade, and botanically known as the “Solanum nigrum complex” is composed of a large number of morphogenetically distinct taxa, with certain ...