Faculty of Science & Technology (FST): Recent submissions
Now showing items 1441-1460 of 4284
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Pre-selection of markers for genomic selection.
(University of NairobiSchool of Computing and Informatics, 2011)BACKGROUND: Accurate prediction of genomic breeding values (GEBVs) requires numerous markers. However, predictive accuracy can be enhanced by excluding markers with no effects or with inconsistent effects among crosses ... -
The distribution of large herbivore hotspots in relation to environmental and anthropogenic correlates in the Mara region of Kenya.
(University of NairobiSchool of Computing and Informatics, 2012)1. The distributions of large herbivores in protected areas and their surroundings are becoming increasingly restricted by changing land use, with adverse consequences for wildlife populations. 2. We analyse changes in ... -
A stage-wise approach for the analysis of multi-environment trials.
(University of NairobiSchool of Computing and Informatics, 2012)Plant breeders and variety testing agencies routinely test candidate genotypes (crop varieties, lines, test hybrids) in multiple environments. Such multi-environment trials can be efficiently analysed by mixed models. A ... -
Influence of beta-blockade with beta-1-selectivity or intrinsic sympathomimetic activity on some metabolic responses to exercise.
(1993)Beta-blockers that are non-selective, beta-1-selective or possess intrinsic sympathomimetic activity (ISA) are thought to differ in their effects on serum potassium, glucose and lactate during exercise. In a randomized, ... -
The effects of maternal and infant vitamin A supplementation on vitamin A status: a randomised trial in Kenya.
(2007)Postpartum vitamin A supplementation of mothers and infants is recommended, but the efficacy has been questioned. In this double-blind, placebo-controlled trial, Kenyan mother-infant pairs were randomised to maternal vitamin ... -
Assessing family planning service-delivery skills in Kenya.
(University of NairobiDepartment of Chemistry, 1997-06)This report demonstrates the use of Lot Quality Assurance Sampling (LQAS) to evaluate the technical competence of two cohorts of family planning service providers in Kenya trained with a new curriculum. One cohort had just ... -
Phylogenetic analysis of the microbial populations in the wild herbivore gastrointestinal tract: insights into an unexplored niche
(College of Biological and Physical Sciences ,Department of Biological Science, 2003)At present, there is little information on the phylogenetic diversity of microbial species that inhabit the gastrointestinal tracts of wildlife. To increase understanding in this area, we initiated a characterization of ... -
Specific PCR assay for a tannin-tolerant selenomonas ruminantium isolate, derived from helicase coding sequences
(College of Biological and Physical Sciences ,Department of Biological Science, 2004)Sequences from a tannin-tolerant Selenomonas ruminantium isolate (EAT2) that hydrolyzes gallic acid were identified. Two exhibited identity to helicases with a wide phylogenetic distribution. PCR amplification by using ... -
Subunit vaccine based on the p67 major surface protein of Theileria parva sporozoites reduces severity of infection derived from field tick challenge
(College of Biological and Physical Sciences ,Department of physics, 2005)Two recombinant vaccines against Theileriaparva, based on a near full-length version of the sporozoite surface antigen p67 (p67(635)), or an 80 amino acid C-terminal section (p67C), were evaluated by exposure of immunized ... -
Reuse of samples: ethical issues encountered by two institutional ethics review committees in Kenya.
(University of NairobiDepartment of Chemistry, 2005-10)There is growing concern about the reuse and exploitation of biological materials (human tissues) for use in research worldwide. Most discussions about samples have taken place in developed countries, where genetic ... -
Screening mosquito house entry points as a potential method for integrated control of endophagic filariasis, arbovirus and malaria vectors
(College of Biological and Physical Sciences ,Department of Biological Science, 2010)BACKGROUND: Partial mosquito-proofing of houses with screens and ceilings has the potential to reduce indoor densities of malaria mosquitoes. We wish to measure whether it will also reduce indoor densities of vectors ... -
Half-precessional dynamics of monsoon rainfall near the East African Equator.
(University of Nairobi,institute for climate change and adaption, 2009-12)External climate forcings-such as long-term changes in solar insolation-generate different climate responses in tropical and high latitude regions. Documenting the spatial and temporal variability of past climates is ... -
Antiparasitic and anticancer carvotacetone derivatives of Sphaeranthus bullatus.
(University of NairobiDepartment of Chemistry, 2012-09)The CH2Cl2-MeOH (1:1) extract of the aerial parts of Sphaeranthus bullatus, an annual herb native to tropical East Africa, showed activity against chloroquine sensitive D6 (IC50 9.7 microg/mL) and chloroquine resistant W2 ... -
Anthraquinones of the roots of Pentas micrantha
(University of NairobiDepartment of Chemistry, 2012-12)Pentas micrantha is used in the East African indigenous medicine to treat malaria. In the first investigation of this plant, the crude methanol root extract showed moderate antiplasmodial activity against the W2- (3.37 ... -
Binding and water solubility enhancement of 14C-benzo[a]pyrene by dissolved organic matter in freshwater in Kenya.
(University of Nairobi,Department of Chemistry,, 2006-12) -
Brain aging in a sample of normal Egyptians cognition, education, addiction and smoking.
(School of Biological Sciences, 1997-05)The impact of duration of education, cannabis addiction and smoking on cognition and brain aging is studied in 211 normal Egyptian volunteers with mean age 46.4+/-3.6 years (range: 20-76 years). Subjects were classified ... -
Identifying human and livestock sources of fecal contamination in Kenya with host-specific Bacteroidales assays.
(University of NairobiDepartment of Geology, University of Nairobi, 2009-11)Microbial source tracking to distinguish between human, livestock and wildlife fecal pollution using molecular techniques is a rapidly evolving approach in many developed countries, but has not previously been applied on ... -
Highly Structured TiO2/In(OH)xSy/PbS/PEDOT:PSS to be used in Photovoltaic
(University of Nairobi,, 1986-09)
