School of Biological and Physical Science: Recent submissions
Now showing items 861-880 of 954
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Susceptibility patterns and the role of extracellular DNA in Staphylococcus epidermidis biofilm resistance to physico-chemical stress exposure
(2018-04)Over 65% of human infections are ascribed to bacterial biofilms that are often highly resistant to antibiotics and host immunity. Staphylococcus epidermidis is the predominant cause of recurrent nosocomial and biofilm-related ... -
Chlorophyll fluorescence parameters and photosynthetic pigments of four Glycine max varieties under Aluminium chloride stress
(PSCI Publications, 2015)Soil acidity limits agricultural production globally. Different kinds of stresses, mainly Al stress, generated from acid soils affect plant growth and result in food shortage and production. General effects of Al toxicity ... -
Growth changes of seven Amaranthus (spp) during the vegetative and reproductive stages of development as influenced by variations in soil water deficit
(International Journal of Research and Innovations in Earth Science, 2015)Soil water deficit is a principal a biotic factor that limits plant growth and development in dry areas. Insufficient moisture contributes to soil water deficit and some negative effects on Amaranthus (spp) such as reduced ... -
Comparative analysis of phenotypic characterization of Kenya and Pacific Islands tarogen germplasm collections Colocasia esculenta L.(Schott)
(PSCI Publisher, 2015)Fifty accessions of taro germplasm collections Colocasia esculenta L. (Schott) were collected from Kenya and Pacific Islands tarogen germplasm collections. Twenty five accessions of Kenyan taro germplasm were collected ... -
Genotype and Environment Interactions of Yields and Yield Components of Tea (Camellia sinensis) Cultivars in Kenya
(Scientific Research Publishing, 2016-04-05)The tea crop provides income and employment to rural populations in many countries. In Kenya, tea, which is the leading export commodity crop, is grown in highlands east and west of the Rift Valley at altitudes ranging ... -
Environmental Management Practices amongst Tobacco Farmers in Migori County, Kenya
(SCIENCEDOMAIN International, 2017-04-17)Aim: To assess environmental management practices carried out by both tobacco farmers and companies. Methodology: Purposive sampling was employed for data collection where by tobacco farmers were randomly selected from the ... -
Ab Initio study of the electronic and optical properties of hexagonal and cubic Ge2Sb2Te5
(African Review of Physics, 2015-04)The electronic and optical properties of hexagonal and cubic Ge 2 Sb 2 Te 5 have been calculated using the QUANTUM ESPRESSO and Yambo codes. The study has considered the variation of electronic band gaps with lattice ... -
Variations in Camellia sinensis (L) Leaf Nutrients and Polyphenols Levels with Genotypes, Nitrogenous Fertilizer Rates, Season and Plucking Intervals in Eastern Africa Tea Growing Regions
(Mase University, 2013)In Eastern Africa, teas are grown in high rainfall areas causing fast nutrients depletion. Foliar nutrients diagnostic limits developed for seedling tea have been in use since 1970s and they have been adopted for clonal ... -
Response of Clonal Tea to Different Tea Growing Locations, Nitrogenous Fertiliser Rates and Plucking Intervals in the Kenya Highlands
(Maseno University, 2010)Tea Camellia sinensis, is widely grown in the highlands of Kenya for manufacture of mainly black tea. The most costly inputs in tea cultivation are nitrogenous fertiliser and plucking which are key determinants of yield ... -
INFLUENCE OF AREA OF PRODUCTION, NITROGENOUS FERTILIZER RATES AND PLUCKING INTERVALS ON THE PRODUCTION OF FATTY ACIDS IN CLONAL TEA (Camellia sinensis (L.O) Kuntze) LEAVES
(Maseno University, 2010)Tea, Camellia sinensis, is widely grown in the highlands of Kenya for manufacture of mainly black tea. The most costly inputs in tea cultivation are nitrogenous fertiliser and plucking which are key determinants of yield ... -
Clonal Variations in the Response of Hard Physically Withered Leaf to Rehydration Following Long Chemical Wither Durations
(The International Society of Tea Science, 2017)Long chemical wither durations and hard physical wither reduce the quality of plain black tea, through reduction in total theaflavins production while encouraging thearubigins formation. Such quality reduction may vary ... -
Changes in the Composition of Elements in Non-Aerated Green Teas Processed from Seedling Tea (Camellia sinensis) Due to Variations in Nitrogenous Fertilizer Rates and Seasons.
(International Journal of Tea Science, 2017)Soil nutrients are lost to the plant with harvested crop in tea production with most ending up as minerals and contribute to human nutrition upon tea consumption. Production of non-aerated green tea in Kenya has been low. ... -
Spatial distribution and habitat characterization of mosquito species during the dry season along the Mara River and its tributaries, in Kenya and Tanzania
(BioMed Central, 2018-01-12)Vector-borne diseases are increasingly becoming a major health problem among communities living along the major rivers of Africa. Although larger water bodies such as lakes and dams have been extensively researched, ... -
Variations in the Precursors of Plain Black Tea Quality Parameters Due to Location of Production and Nitrogen Fertilizer Rates in Eastern African Clonal Tea Leaves
(Cambridge University Press, 2016-04)Summary Theaflavins contribute to astringency and brightness while thearubigins contribute to colour and mouth feel of black tea. Green leaf flavan-3-ols influence levels and distribution of theaflavins and thearubigins ... -
Effects of location of production, fertilizer rates and plucking intervals on mature leaf nutrients of clone TRFK 6/8 in East Africa.
(Tea Research Foundation of Kenya, 2011)Mature tea leaf has been adopted in East Africa for nutrients diagnosis to guide remedial applications of nutrients and cushion the plants from possible deficiencies that would affect yields and quality. Although it ...
