Browsing Faculty of Science & Technology (FST) by Title
Now showing items 3759-3778 of 4283
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Strategies for Maintenance and Improvement of Soil Productivity Under Continuous Maize and Beans Cropping System in the Sub-humid Highlands of Kenya: Case Study of the Long-Term Trial at Kabete
(2012)Inappropriate soil management practices are cited as the main causes of soil fertility decline of cultivated lands in sub-Saharan Africa (SSA). Small-scale farmers are faced with daunting challenges and limited opportunities ... -
Strategies for Managing Cognitive Load and Enhancing Motivation in E-Learning
(University of Nairobi, 2021)Cognitive load and motivation are two factors that have been established as mediators of learning. It has been established that learners who experience low cognitive loads and are highly motivated to succeed in learning. ... -
Stream flow regionalization using discordancy and heterogeneity measure statistics
(Department of Meteorology, 2002) -
Strength training in endurance runners.
(2010)This study examined effects of periodized maximal versus explosive strength training and reduced strength training, combined with endurance training, on neuromuscular and endurance performance in recreational endurance ... -
Strengthening technology risk management in mobile money lending
(University of Nairobi, 2020)Innovative mobile money services have grown tremendously in the East African market. While there are positive effects of technology-enabled financial inclusion, risks exist. This study sought to strengthen the capacity of ... -
Strongly coupled quantum Magnetic Polarizability Tensor
(University of NairobiDepartment of Physics, 1991) -
Structural and Optical Characterization of Nitrogen-doped TiO2 Thin Films Deposited by Spray Pyrolysis on Fluorine Doped Tin Oxide (FTO) Coated Glass Slides
(School of Physical Sciences, 2012)Undoped and nitrogen-doped titanium dioxide (TiO2) thin films of 400 nm thick deposited by spray pyrolysis were structurally and optically characterized. The effect of substrate temperature on the optical properties of ... -
Structural and Optical Characterization of Tin Oxide Codoped with Aluminum and Sulphur
(2015)Thin films of Tin oxide co-doped with 28at%Aluminum and varied concentration of Sulphur were prepared on 1mm thick, 1 × 1 cm2 glass substrates at 470℃ by spray pyrolysis technique. Films were produced from 2.0 M solution ... -
Structural and optical properties of phosphorous and antimony doped ZnO thin films deposited by spray pyrolysis: a comparative study
(University of Nairobi, 2017)A study of structural and properties of pure (undoped) Zinc oxide (ZnO) and phosphorous (P) and Antimony (Sb) doped Zinc Oxide films has been carried out. The films were deposited by an automated spray pyrolysis equipment ... -
Structural Elucidation of New Flavanones Isolated from Erythrina abyssinica
(University of Nairobi, 1996)Three new prenylated flavanones, abyssinin I (1), II (2), and III (3), have been isolated from the African medicinal plant Erythrina abyssinica, together with six known flavanones. The structural elucidation of 1−3 by ... -
Structural, Electronic And Magnetic Properties Of The Heusler Alloy Mn 2 VIn: A Combined DFT And Experimental Study
(University of Nairobi, 2018)Structural, electronic and magnetic properties of the Heusler alloy Mn 2 VIn have been investigated using the density functional theory and experimental techniques. Unlike many other Heusler ... -
Structural, Optical and Photoelectrochemical Properties of Cuprous Oxide Synthesized by Low Temperature Thermal Oxidation
(University of Nairobi, 2016)Ultrathin films (50-150nm thick) cuprous oxide (Cu2O) thin films were deposited by low temperature thermal oxidation technique. The structural, optical and photoelectrochemical properties of the thin films were investigated. ... -
Structure and Composition of Acacia xanthophloea woodland in Lake Nakuru National Park, Kenya
(Department of Chemistry, 2006)The woody vegetation of Lake Nakuru National Park occurs along rivers, lakeshores and flood plains. Four different sites within the Acacia xanthophloea woodlands were selected for the study. Vegetation structure was not ... -
Structure and evolution of the Kenya Rift Valley
(University of Nairobi, 1971)Geological evidence makes possible a reconstruction of events since Miocene times, with about 10 km of crustal separation and the pressure beneath the central rift of an upward intrusion from the mantle. -
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 ... -
Structure of the 40s ribosomal subunit of plasmodium falciparum by homology and de novo modeling.
(University of Nairobi, 2017)Generation of three dimensional structures of macromolecules using in silico structural modeling technologies such as homology and de novo modeling has improved dramatically and increased the speed by which tertiary ... -
Structure of the Kenya rift from seismic refraction
(University of Nairobi,Department of Physics, 1987) -
Structure Revision Of Isoline (Ruwenine), Bisline And Isolinecic Acid
(University of Nairobi, 2000-08)X-ray crystallography of bisline, and the chemical interconversion of bisline and isoline (ruwenine), revealed that the structures previously assigned to these alkaloids required revision; as did that of isolinecic acid. -
Structure, Composition, and Morphology of Photoelectrochemically Active TiO2-xNx Thin Films Deposited by Reactive DC Magnetron Sputtering
(American Chemical Society, 2004)Films of nitrogen-doped TiO2 were made by reactive DC magnetron sputtering in a mixture of argon, oxygen, and nitrogen. The nitrogen gas ratio Φ was varied in the 0 < Φ < 0.025 range during the depositions, resulting in ...