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Histological studies on the testes of pond specimens of Tilapia nigra (Gunther) (Pisces: Cichlidae) and their implications of the pituitary-testis relationship
(University of Nairobi, 1970)
T. nigra pond specimens were studied histologically and histochemically to investigate the relative development of the spermatogenetic and the interstitial tissue elements. The earliest phases showed active spermatogenesis ...
Effect of thyroxine on the ultrastructure of the hypophyseal proximal pars distalis in Tilapia zillii
(University of Nairobi, 1975)
The effects of exogenous L-thyroxine on the fine structure of the proximal pars distalis cells were examined in Tilapia zillii. In thyroxine-treated animals the thyrotrophic cells appeared marginally smaller and less active ...
Sequence and geochronology of the Kenya rift volcanics
(University of Nairobi, 1971)
The Upper Cenozoic volcanic formations associated with the Kenya rift valley are divided into seven main stratigraphic groups representing widespread ‘plateau’ formations, and a number of central volcano groups of more ...
The Distribution Of Geophilic Dermatophytes In Kenyan Soils
(University of Nairobi, 1978)
Two hundred and eighty one soil samples from different provinces of Kenya were examined for dermatophytes by the hair baiting technique. Dermatophytes were recovered from 84 samples. Microsporum gypseum constituted 75.8% ...
Control of gliding angle in Rüppell's Griffon Vulture Gyps rüppellii
(University of Nairobi, 1970-11)
1. The drag of the frozen, wingless body of a Rüppell's griffon vulture was measured in a wind tunnel with a simple drag balance. The drag coefficient with feet and neck retracted was 0.43, based on the greatest cross-sectional ...
A method of identifying individual lions Panthera leo with an analysis of the reliability of identification
(University of Nairobi, 1970-04)
A method is described of identifying lions from the patterns of vibrissa spots. “Reliability” of identification is discussed in terms of the probability of there being more than one individual with a given spot pattern in ...
Failure of mammalian TRH to stimulate thyroid function in the
(University of Nairobi, 1973)
Synthetic TRH in doses as high as 100 μg per 50 g (average) lungfish produced no change in radioiodine metabolism in the thyroid gland. In similar animals 1.0 IU of bovine TSH clearly was stimulatory.
The Kenya Rift volcanics: A note on volumes and chemical composition
(University of Nairobi, 1972)
Cainozoic alkaline volcanics associated with the Kenya Rift Valley have an estimated total volume of about 144,000 km3. Basalts were erupted repeatedly and account for more than half this volume. The most strongly alkaline ...
Report on airmagnetic surveys of two areas in the Kenya rift valley ag
(University of Nairobi, 1972)
Airmagnetic surveys have been carried out in two areas within the Kenya Rift system: the Lake Magadi region and the region south of Lake Hannington. In both regions, but particularly in the area south of Lake Hannington, ...
The South Turkana Expedition: Scientific Papers III. A Geological Reconnaissance of South Turkana
(University of Nairobi, 1970)