Journal Articles: Recent submissions
Now showing items 6821-6840 of 29992
-
The Impact of Real Exchange Rate Misalignment on Economic Growth; Kenyan Evidence
(University of Nairobi,, 2014)This paper examines Real Exchange Rate (RER) Misalignment on economic growth in Kenya by using Johansen Cointegration, and Error Correction Model Technique to establish the factors that determine equilibrium real exchange ... -
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% ... -
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, ... -
Methallibure studies on tilapia. III. Effects of tilapian partially purified pituitary gonadotrophic fractions on the testes of Methallibure-treated Sarotherodon spirulus (= Tilapia nigra)
(University of Nairobi, 1979-12)Tilapian fish Sarotherodon spirulus (= Tilapia nigra) were treated with the gonadotrophic inhibitor, methallibure, for 9 weeks during the last 2 of which they were divided into a control group and 8 experimental groups. ... -
Methallibure studies on Tilapia: II. Effect of tilapia pituitary homogenate (TPH), human chorionic gonadotropin (HCG) and testosterone propionate (TP) on the testes of Methallibure-treated Tilapia nigra
(University of Nairobi, 1974-07)In Methallibure-suppressed T. nigra testes high and low doses of TPH and HCG stimulate a qualitatively similar reactivation of spermatogenesis resulting in a significant elevation of testicular weight and G.S.I.; interstitial ... -
Effect of chorionic gonadotrophin on testicular histology and testosterone production in Tilapia leucosticta (Teleostei: Cichlidae
(University of Nairobi, 1970-10)Eight adult male T. leucosticta were given daily injections of 500 IU human chorionic gonadotrophin (Pregnyl, Organon) intraperitoneally for 1 week. These fish showed marked increases in testicular size, gonosomatic index, ... -
Regulation of plasma Na+ and K+ concentrations in five African species of Tilapia fishes
(1974-08)1. Five species of the genus Tilapia were collected from five localities in the vicinity of Nairobi, Kenya. Two species, T. alcalica and T. grahami, were obtained from concentrated “soda” lakes (Lakes Natron and Magadi ... -
Gonadal and reproductive patterns in Tilapia leucosticta (Teleostei: Cichlidae) in an equatorial lake, Lake Naivasha (Kenya)
(University of Nairobi, 2009-08)The cichlid fish T. leucosticta (Trewavas) was studied by fortnightly seining an area of an equatorial lake (Lake Naivasha) in Kenya to study their reproductive and gonadal patterns. The study lasted 16 months during which ... -
The Effect of 3,6,bis-Dimethylaminoacridine on Cultured Bovine Lymphoid Cells Infected with Theileria Parva and in Cattle Experimentally Infected with East Coast Feuer
(University of Nairobi,, 1975)The cytocidal effect of 3,6,bis-dimethylaminoacridine (A. O.) on Theileria parva — infected bovine lymphoblastoid cells was investigated by growing the cells in media containing varying concentrations of the drug for 24 ... -
Structure and fine structure of the hypophyseal pars distalis in endigenous African species of the genus Tilapia
(University of Nairobi, 1974)The structure and fine structure of the pars distalis hypophyseos was examined in five species of Tilapia fishes (T. alcalica, T. grahami, T. leucosticta, T. zillii, T. nigra) which were collected from lakes of a wide range ... -
Compensatory Hypertrophy Of The Remaining Ovary And The Effects Of Methallibure In The Unilaterally Ovariectomized Tilapia Aurea
(University of Nairobi, 1976)In Tilapia aurea unilateral ovariectomy resulted in a compensatory hypertrophy of the remaining ovary. The compensatory hypertrophy is manifested by: (a) an increase in the number of dividing oogonia; and (b) hypertrophy ... -
Prevalence and associated factors of pulmonary hypertension in Kenyan children with adenoid or adenotonsillar hypertrophy
(University of Nairobi, 2014)Objectives Adenotonsillar hypertrophy is a common condition in childhood, whose serious complications of pulmonary hypertension and cor pulmonale are devastating but local prevalence is unknown. This study determined ... -
Enhancement of fruit quality in Capsicum annum through pollination by Hypotrigona gribodoi in Kakamega, Western Kenya
(University of Nairobi,, 2014)A study was carried out in Kakamega forest, in the western region of Kenya, to evaluate the effectiveness of the stingless bee Hypotrigona gribodoi (Magretti, 1884) on the pollination of green pepper. Three treatments were ... -
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 ... -
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 ... -
Pre-exposure prophylaxis for HIV-1 prevention does not diminish the pregnancy prevention effectiveness of hormonal contraception.
(University of Nairobi, 2014)BACKGROUND: For women at risk of HIV-1, effective contraception and effective HIV-1 prevention are global priorities. METHODOLOGY: In a clinical trial of pre-exposure prophylaxis (PrEP) for HIV-1 prevention in ... -
Endocrine regulation of reproduction in Tilapia
(University of Nairobi, 1972)Tilapia, the dithiocarbamoylhydrazine derivative Methallibure (I. C. I. 33828), added as a suspension in 6 daily doses of 1 mg/liter of aquarium water each week, effectively suppresses gonadotrophin production after 5 ... -
Growth features of Acacia tortilis and Acacia xanthophloea seedlings and their response to cyclic soil drought stress
(University of Nairobi,, 2001)Seedlings of Acacia tortilis (Forsk) Hyne and Acacia xanthophloea Benth. were raised under controlled glasshouse conditions. Control plants were watered daily while other treatments involved withholding water for 2, 4 and ... -
Reproductive Biology Of Lions (panthera Leo Massaica Neumann) In Nairobi National Park
(University of Nairobi, 1973-12)This study was conducted from June 1968 to July 1969 and from August 1970 to December 1972 with information available for the intervening period as well as for the first half of 1968, giving records for approximately 5 ... -
The haemoglobin content of autotransfused blood in acute ectopic pregnancy
(University of Nairobi,, 1972)Haemoglobin concentration and packed cell volume estimations were made on the intraperitoneal blood from 12 patients with acute ectopic pregnancy. The derived values for mean corpuscular haemoglobin concentration were ...
