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Now showing items 11-20 of 42
Measurements of total electron content near the magnetic equator
(1966-11)
The columnar electron content, nT, has been measured at Zaria for a 9-month period by the ‘close-spaced frequency’ method using the 40 and 41 Mc/s transmissions from the beacon satellite S-66 (BE-B). The ‘diurnal’ variation ...
The belt of equatorial spread-F
(University of Nairobi, 1960)
The morphology of the belt of equatorial spread-F at sunspot maximum is investigated, using I.G.Y. data, for magnetically quiet and magnetically disturbed conditions respectively. The belt is found to extend from about ...
The paleomagnetism of the Turkana lavas
(University of Nairobi, 1966-02)
Directions of magnetizations obtained after cleaning the Miocene lavas from northwest Kenya are presented. The pole position thus obtained, together with similar data from eastern Africa, indicates that no significant ...
Delayed Implantation in an Equatorial Fruit Bat
(1965)
AT Kampala, Uganda (latitude 0° 20' N.), there is an enormous roost of the fruit bat, Eidolon helvum Kerr. Numbers vary seasonally, with a maximum of about 250,000 during October-November
Gonadal Development And Reproductive Activity Of The Cichlid Fish Tilapia Leucosticta (trewavas) In An Equatorial Lake
(University of Nairobi, 1969)
THE most important external factors that influence gonadal development and reproductive activity are day length and temperature1. In temperate zones both factors show dramatic changes in the annual cycle. In the tropics, ...
Histological Studies On The Testis Of Tilapia Leucosticta And Other Species Of The Genus Tilapia (pisces: Teleoste)1
(University of Nairobi, 1969-04)
ABSTRACT: Histological studies carried out on specimens of the cichlid fishes T.
leucosticta, T. nigra, and T. zillii collected in the East African Rift Valley crater lake,
Lake Naivasha reveal that various
stages of ...