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Now showing items 381-400 of 3337
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Novel source of sorghum tolerance to the African stem borer, Busseola fusca
(Academic Journals, 2012-08)Sorghum (Sorghum bicolor) is an important cereal food crop in semi-arid tropics, but its productivity is curtailed mainly by insect pests and diseases. The African stem borer, Busseola fusca Fuller (Lepidopteran: Noctuidae), ... -
Kenya and distance education: a model to advance graduate nursing
(Blackwell Publishing Ltd, 2012-08)Africa is faced with a myriad of challenges, such as HIV/AIDS, malaria, tuberculosis, and a variety of political and historical complications that have affected the educational system for advanced nursing practice. In ... -
Characterization of antibiotic resistance in environmental enteric pathogens from Kibera slum in Nairobi-Kenya
(2012-08)Kibera slum is characterized by poor sanitation hence the frequent outbreaks of diarrheal diseases. Emergence of antibiotic resistance by diarrhoea-causing bacteria is an inevitable challenge in the area. Diarrhea-causing ... -
The drying of onion slices in two types of hot-air convective dryers
(Academic Journals, 2012-08-07)Drying experiments were carried out using two types of convective hot-air dryers such that the hot air passed perpendicularly through a thin layer of onion slices in one dryer while the air passed parallel to the thin layer ... -
Comparison of a gas fired hot-air dryer with an electrically heated hot-air dryer in terms of drying process, energy consumption and quality of dried onion slices
(Academic Journals, 2012-08-14)Onion slices were dried in either a gas-fired hot air dryer or an electrically heated hot air dryer at air temperatures of 50, 60 or 70°C, and at air flow velocities of 0.5, 1.0 or 2.0 m/s. Records of the drying rates and ... -
Yield Selection within Coffea arabica cv. Ruiru 11
(SCIENCEDOMAIN international, 2012-08-17)Aims: This study was aimed at identifying high yielding Ruiru 11 sibs in varying growing conditions. The study also intended to measure the extent to which cherry yields of Ruiru 11 are affected by the environment. Study ... -
Biology of Invasive Termites: A Worldwide Review
(published online, 2012-09)The number of recognized invasive termite species has increased from 17 in 1969 to 28 today. Fourteen species have been added to the list in the past 44 years; 10 have larger distributions and 4 have no reported change ... -
Comparative Analysis of Velocity Decomposition Methods for Internal Combustion Engines
(Scientific Research, 2012-09)Different signal processing technique performances are compared to each other with regard to separating the mean and fluctuating velocity components of a simulated one-dimensional unsteady velocity signal comparable to ... -
Coevolutionary fine-tuning: evidence for genetic tracking between a specialist wasp parasitoid and its aphid host in a dual metapopulation interaction
(2012-09)In the interaction between two ecologically-associated species, the population structure of one species may affect the population structure of the other. Here, we examine the population structures of the aphid Metopeurum ... -
Performance of sweet potato varieties across environments in Kenya
(2012-09)Sweetpotato is an important food, feed and cash crop in Eastern Africa but its adoption as a dual purpose crop has not been exploited. Varieties giving high tuber and vine yields would be ideal for small scale farmers who ... -
Fish Species Composition and Diversity of Small Riverine Ecosystems in the Lake Victoria Basin, Kenya
(2012-09)Riverine ecosystems in the Lake Victoria Basin (LVB) significantly contribute to the lake’s water budget and aquatic biodiversity. Despite their significance to the lakes fisheries, only limited biodiversity studies have ... -
Fish Species Composition and Diversity of Small Riverine Ecosystems in the Lake Victoria Basin, Kenya
(International Journal of Science and Technology, 2012-09)Riverine ecosystems in the Lake Victoria Basin (LVB) significantly contribute to the lake’s water budget and aquatic biodiversity. Despite their significance to the lakes fisheries, only limited biodiversity studies have ... -
Selection within Coffea arabica cv. Ruiru 11 for high cup quality
(Academic Journals, 2012-09-26)In recent years, consumer awareness about the quality of different coffees has increased and therefore production and supply of coffee with excellent quality attach more significance. As a result, many coffee producing ... -
Mutated elements of a complex promoter (Amh) can help to demonstrate the role of certain elements in controlling differential gene expression
(Springer Science+Business Media, 2012-10)Amh is a single copy gene which is expressed in different ways during mammalian development. Several potential promoter elements have been identified using physiological experimentation and on the basis of interspecific ... -
SPOC domain of mint protein induces hematopoietic differentiation via Bmp4/Smad5 pathway
(Scientific Research Publishing, 2012-10)Mint is a newly identified molecule that mediates signal transduction and modulates chromatin repression. Mint family members contain a highly conserved C-terminus SPOC domain (SpenParalog and OrthologsC-terminal domain) ... -
Biocatalytic production of chitosan polymers from shrimp shells, using a recombinant enzyme produced by pichia pastoris
(Scientific Research Publishing, 2012-10)Chitosan has a unique chemical structure with high charge density, reactive hydroxyl and amino groups, and extensive hydrogen bonding. Chitin deacetylase (EC 3.5.1.41) catalyzes the hydrolysis of the N-acetamido groups of ... -
Chimeric oncogenic interferon regulatory factor-2 (IRF-2): Degradation products are biologically active
(Scientific Research Publishing, 2012-10)Interferon Regulatory Factor-2 (IRF-2) belongs to IRF family, was identified as a mammalian transcrip-tion factor involved in Interferon beta (IFNβ) gene regulation. Besides that IRF-2 is involved in ... -
Early expression of the tbx22 gene in zebrafish influences positioning of pharyngeal arch cartilages
(Scientific Research Publishing, 2012-10)Mutations in human TBX22 cause X-linked cleft palate with anklyoglossia syndrome. The two zebrafish tbx22 splice isoforms, tbx22-1 and tbx22-2, encode proteins of 444 and 400 amino acids, respectively. Zebrafish tbx22 mRNA ... -
GAPDH expression as a measurement of transfection efficiency for p16INK4a gene silencing (siRNA) in senescent human diploid fibroblasts
(Scientific Research Publishing, 2012-10)Human diploid fibroblasts (HDFs) undergo a limited number of cell divisions in culture. After certain population doublings, they reach a state of irreversible growth arrest known as replicative senescence. Senescent HDFs ... -
Genetic variation may play a crucial role in non-coding RNA biogenesis
(Scientific Research Publishing, 2012-10)Transcription, post-transcriptional modification, translation, post-translational modification, DNA replication, and signaling interaction of intra- and extra- cellular components are the relevant mechanisms in gene ...