Now showing items 21-30 of 49
Alkaloids of Teclea nobilis
(University of Nairobi, 1988)
A new furoquinoline alkaloid to which we have assigned the trivial name nobiline, and seven other quinonline alkaloids were isolated and identified from the leaves and fruits of Teclea nobilis, an African medicinal plant.
Behavioral Strategies Used by Macrotermes michaelseni foragers to Avoid Ant Predation (lsoptera: Macrotermitinae)
Macrotermes michae/seni, a dominant invertebrate herbivore in the semi-arid savanna of Kajiado, Kenya, was studied to establish what measures its foragers adopt to counteract ant predation while insuring adequate ...
Instrument-based distortions of leaf/air temperature differences and interpretations of bean drought stress resistance
The adaxial leaf temperatures of 3 cultivars of Phaseolus vulgaris and 1 cultivar of Tepary bean (Phaseolus acutifolius) were measured from 0600 to 1800 hours. 2 instruments having different measurement principles were ...
The spatial and temporal patterns of the East African seasonal rainfall derived from principal component analysis
this study, rotated principal component analysis (RPCA) was used to study the spatial and temporal characteristics of asonal rainfall over East Africa during the period 1922-1983. The RPCA solutions were derived from both ...
Stochastic modelling of regional annual rainfall anomalies in East Africa
ARIMA (p, d, q) models were fitted to areal annual rainfall of two homogeneous regions in East Africa with rainfall records extending between the period 1922-80. The areal estimates of the regional rainfall were derived ...
Teleconnection between Seasonal Rainfall over East Africa and Global Sea Surface Temperature Anomalies
In this study, global sea surface temperature anomalies within ±300 latitudes of the equator were correlated with the time series of the major rotated principal component analysis (RPCA) modes of the seasonal rainfall ...
Transonic integro-differential and integral equations with artificial viscosity
(University of Nairobi., 1989)
From the two-dimensional transonic small disturbance equation, with artificial viscosity, we derive an integro-differential equation and subsequently an integral equation. The computational domain is discretized into ...
Skeletal neuromuscular and smooth muscle effects of whole venom of the green mamba, Dendroaspis angusticeps - I.
Dendroaspis angusticeps venom (75 micrograms/ml) caused an irreversible blockade of the directly as well as directly evoked contractions of the rat hemidiaphragm and indirectly evoked contractions of the chick biventer ...
Statistical Characteristics of Wind Power in Kenya
The statistical characteristics of wind power in Kenya were investigated in this study with the data consisting of daily maximum, minimum and mean wind speed values from 24 sites in Kenya. The method of Principal ...