Faculty of Science & Technology (FST): Recent submissions
Now showing items 881-900 of 4283
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Process optimization for production of biodiesel from croton oil using two-stage process
(University of Nairobi, 2014)Croton oil was extracted from dry seeds by a mechanical pressing machine then filtered to remove solid impurities. Biodiesel was prepared from the oil through a two-stage process in a biodiesel reactor. The optimum ... -
Absorption of Congo red dye from aqueous solutions using roots of eichhornia crassipes: kinetic and equilibrium studies
(University of Nairobi, 2014)Absorption of Congo red (CR) from aqueous solution using dried roots of Eichhornia crassipes was studied. Batch experiments were carried out for sorption kinetics and isotherms. Experimental results obtained showed that ... -
Antibacterial activity of five medicinal plant extracts used by the Maasai people of Kenya
(University of Nairobi, 2014)Five locally known plants, Solanum aculeastrum, Erythrina abyssinica, Carissa edulis, Croton megalocarpus and Myrica salicifolia used by Maasai traditional healers for treatment of bacterial infections were extracted ... -
Effects of monocular deprivation on the dendritic features of retinal ganglion cells
(University of Nairobi, 2015)SUMMARY: Monocular deprivation results in anatomical changes in the visual cortex in favor of the non-deprived eye. Although the retina forms part of the visual pathway, there is scarcity of data on the effect of monocular ... -
A note on planarity stratification of hurwitz spaces
(University of Nairobi, 2014-08)Abstract. One can easily show that any meromorphic function on a comple x closed Riemann surface can be represented as a composition o f a birational map of this surface to CP 2 and a projection of the image curve ... -
On a Zeuthen-type problem
(University of Nairobi, 2014) -
Evaluation of multiplex pcr in detection of crop alleles and differential hybridization among weedy sorghum populations
(University of Nairobi, 2014)Utility of the PCR methodology in detection of crop alleles in weedy species has the potential for improvement through techniques that improve efficiency and minimize the cost and time required. This study evaluated the ... -
Real time pcr mediated determination of the spontaneous occurrence of sorghum bicolor (l. Moench) alleles in wild sorghum populations
(University of Nairobi, 2014)The study evaluates the utility of Real Time PCR (RT - PCR) in quantitative and qualitative analysis of alleles in sorghum populations and the spontaneous occurrence of Sorghum bicolor alleles in wild populations ... -
Utility of CT Scan and CA 19-9 in Predicting Non –Resectability in Malignant Obstructive Jaundice.
(University of Nairobi, 2014)Background: Most patients with malignant obstructive jaundice (MOJ) present with non-resectable disease. Non curative laparotomy has been associated with adverse outcome. There is need to predict non-resectable disease ... -
Interleukin - 1 polymorphisms and chronic periodontitis in a rural Kenyan population
(University of Nairobi, 2015-02)Susceptibility to Chronic periodontitis (CP) has been associated with genetic polymorphisms in the proinflammatory cytokine, interleukin-1 (IL-1A and IL-1B) isoforms but little is known about their role in rural Africans. ... -
Experimental investigation on performance, emission and combustion characteristics of croton megalocarpus biodiesel blends in a direct injection diesel engine
(University of Nairobi, 2015-01-01)The emission, performance and combustion characteristics of croton biodiesel blends were tested in a direct injection (DI) single cylinder four stroke diesel engine. The physico-chemical properties of the biodiesel blends ... -
Micro factors influencing use of electronic information resources among postgraduate students in institutions of higher learning in Kenya
(University of Nairobi, 31.01.2015)Library Hi Tech News, Volume 32, Issue 1, March 2015. Purpose To evaluate micro factors influencing use of electronic information resources among postgraduate students in institutions of higher learning in Kenya, and suggest ... -
Biochemical changes in the plasma of vervet monkeys (Chlorocebus aethiops) experimentally infected with Trypanosoma brucei rhodesiense
(University of Nairobi, 2008-05-16)Biochemical evaluation of plasma during disease conditions gives an indication of the functional status of the various body organs. Biochemical analysis of plasma from 32 vervet monkeys (Chlorocebus aethiops) infected ... -
Dynamic channel sharing strategies through game-theoretic reinforcement learning
(University of Nairobi, 2014-03)—Random access protocols are used by multiple nodes in wireless networks to effectively share a wireless channel for data transmission. While competing for the channel, the nodes seek to achieve an individual or group ... -
Antimicrobial activity and bioactive constituents of alectra sessiliflora (vahl) kuntze methanol extract
(University of Nairobi, 2013)Alectra sessiliflora (Vahl) Kuntze (Scrophulariaceae) is traditionally used in western Kenya in the management of microbial infections. The water, chloroform and methanol extracts of A. sessiliflora whole plant exhibited ... -
Antifungal activity, brine shrimp cytotoxicity and phytochemical screening of gladiolus watsonoides baker (iridaceae)
(University of Nairobi, 2014)Plants and plant products are by far the most utilized by humans as source of medicine. They are used by various cultures in various ways. Although the beginning of the usage was by trial and error, accessibility may ... -
Castration causes progressive reduction of length of the rabbit penis
(University of Nairobi, 2014)Androgenic hormones are important in normal embryonic development and maintenance of the structural integ rity of the penis . This structural integrity is vital in the physiology of penile erection. Its alteration may ... -
Determination of selected micro and macronutrients in sugarcane growing soils at Kakamega north district, Kenya
(University of Nairobi, 2014)Kakamega North district is situated in Kakamega County in the western region of the Republic of Kenya. It is a major sugarcane producing area. The soils in the area were analyzed for selected macro and micronutrients. ... -
Cytotoxic and antioxidant flemingins g-p from the leaves of flemingia grahamiana
(University of Nairobi, 2014)The known flemingins A-C (1-3) and nine new chalcones, named flemingins G-O (4-12), along with deoxyhomoflemingin (13) and emodin (14) were isolated from a leaf extract of Flemingia grahamiana. The isolated chalcones were ...