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ROBUST ESTIMATION OF VARIANCE IN THE PRESENCE OF NEAREST NEIGHBOUR IMPUTATION
(African Journal of Science and Technology, 2003)
The problem of estimating the variance of an estimator of the population total when missing values have been filled using a Nearest Neighbour (NN) imputation method is considered. The estimator is developed assuming a more ...
Robust estimation of variance in the presence of nearest neighbour imputation
(African Network of Scientific and Technical Institutions (ANSTI), 2003)
The problem of estimating the variance of an estimator of the population total when missing values have been filled using a Nearest Neighbour (NN) imputation method is considered. The estimator is developed assuming a more ...
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. ...
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 ...
Development of a Non-Mist Vegetative Propagation Protocol for Eucalyptus Hybrid Clones
(Journal of East African Natural Resources Management, 2009)
Eucalyptus trees have proved to be a popular species for farm forestry,however their vegetative propagation has not been optimised mainly due to the high cost of infrastructure used to propagate them in mist ...
Somatic embryogenesis and plant regeneration from immature embryos of tropical maize (Zea mays L.) inbred lines
(2008)
Somatic embryogenesis and plant regeneration was achieved from immature embryos of six maize (Zea mays L.) inbred lines (CML216, CML78, CML331, TL18, TL27 and MU25). Callus was initiated on N6 medium supplemented with ...
Microwave Expansion of Imitation Cheese Containing Resistant Starch
(Elsevier, 2008)
The objective of this study was to manufacture an imitation cheese that expands to a crispy product when heated in a microwave oven. Imitation cheese (∼18% w/w protein and 60% w/w moisture content) was formulated with ...
Effects of Refrigerated Storage on Water Mobility and Microwave Expansion of Imitation Cheese containing Resistant Starch
(Elsevier, 2008)
The effects of storage time prior to microwave heating on expansion of imitation cheese containing functional fibre was studied. Cheese was formulated to contain 60% moisture and 17.3% w/w resistant starch. Cheese samples ...
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 ...
Impact of the invader Ipomoea hildebrandtii on grass biomass, nitrogen mineralisation and determinants of its seedling establishment in Kajiado, Kenya
(African Journal of Range and Forage Science, 2008)
The invasive coloniser Ipomoea hildebrandtii aggravates the problem of inadequate grass forage in Kajiado district, Kenya. To test
its impact on grass biomass, nitrogen (N) mineralisation and seedling establishment, grazing ...