Faculty of Science & Technology (FST): Recent submissions
Now showing items 4181-4200 of 4284
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Effective thermal conductivity of loose particulate systems
(School of Physical Sciences, 1996)The effective thermal conductivity for several loose particulate insulation systems has been measured in the temperature range from 273 K–900 K and the results compared to those predicted from three different models. The ... -
Thermal Conductivity of Particulate Insulators: Effect of Particle Size Distribution, Moisture Content and Binders
(School of Physical Sciences, 1996) -
Spectral Analysis of Acousto-Ultrasonic Waves for Defect Sizing
(School of Physical Sciences, 1996)A study of the feasibility of employing acousto-ultrasonic (AU) testing to size defects has been carried out using a model system consisting of a single defect in a glass matrix. A through-transmission mode was used for ... -
Monitoring the Effects of Inclusions in Model Glass Systems Using Acousto-Ultrasonic Techniques
(School of Physical Sciences, 1996)The feasibility of employing acousto-ultrasonic techniques for monitoring the effects of inclusions in ceramics has been studied using model glass matrix composites. Two brittle inclusions, namely alumina and silicon ... -
The Role of Aspect Ratio in the Elastic Modulus-Porosity Relationship of a Triaxial Porcelain
(School of Physical Sciences, 2000)The effect of pore geometry on the elastic modulus–porosity relationship of a triaxial porcelain has been studied using the experimentally measured aspect ratio as a fitting parameter. The experimental elastic modulus data ... -
Ceramic Transactions
(School of Physical Sciences, 2000) -
Survey of predacious phytoseiid mites (Acari: Phytoseiidae) inhibiting coffee trees in Kenya with descriptions of some new species
(School of Biological Sciences, 2009)During a comprehensive survey of predacious mites in the different coffee zones of Kenya 33 species of phytoseiid mites were reported from 122 coffee farms: eight species of Euseius Wainstein, three Ueckermannseius Chant ... -
Nocturnal activities of Phlebotomine sandflies (Diptera: Psydhodidae) in Baringo District, Kenya. Submitted to TAF Preventive Medicine Bulletin
(School of Biological Sciences, 2010) -
In vitro effects of Warburgia ugandensis, Psiadia punctulata and Chasmanthera dependens on Leishmania major promastigotes.
(School of Biological Sciences, 2010)Plant extracts from Warburgia ugandensis Sprague (Family: Canellaceae), Psiadia punctulata Vatke (Family: Compositae) and Chasmanthera dependens Hoschst (Family: Menispermaceae) were tested for activity on Leishmania major ... -
Anthocyanin Sensitized Nanoporous TiO2 PEC Solar Cells
(School of Physical Sciences, 2004)Photoelectrochemical solar cells comprising a colloidal TiO2 photoelectrode and sensitized with anthocyanin pigments, delphinidin purple and cyanidin 3,5-diglucose extracted from Hibiscus sabdariffa and Ribes nigra plants, ... -
Materials Science, Promotion of Science and Technology (POST)
(School of Physical Sciences, 2006)This study investigated the effectiveness of three physical-chemical methods namely; pH adjustment, precipitation with alum and the use of polyelectrolytes. In the treatment of diary wastewater from Brookeside milk processing ... -
Electron Transportand Recombination in Dye Sensitized Solar Cells Fabricated from Obliquely Sputter Deposited and Thermally Annealed
(School of Physical Sciences, 2007)This study investigated the effectiveness of three physical-chemical methods namely; pH adjustment, precipitation with alum and the use of polyelectrolytes. In the treatment of diary wastewater from Brookeside milk processing ... -
Intensity and Temperature Dependent Characterization of eta Solar Cell
(School of Physical Sciences, 2008)This study investigated the effectiveness of three physical-chemical methods namely; pH adjustment, precipitation with alum and the use of polyelectrolytes. In the treatment of diary wastewater from Brookeside milk processing ... -
Effects of vegetation disturbance on small mammals diversity and distribution in Oloolua forest, Kenya
(University of NairobiSchool of Biological Sciences, 2010)ThIs thesis describes investigations carried out from October 2008 to March 2009 to asses the effects of vegetation disturbance on diversity and distribution of small mammals in Oloolua forest, Kenya. Four different ... -
The performance of plant species in removing nutrients from stormwater in biofiltration systems in Cape Town
(Chemistry, 2012)In 2009, the City of Cape Town (CoCT) adopted a stormwater policy which mandates that new and existing developments should reduce the concentration of phosphorus and suspended solids in stormwater runoff by 45% and 80%, ... -
Quinolizidine Alkaloids from Sophora velutina subsp. zimbabweensis (Fabaceae: Sophoreae)
(Natural Product CommunicationsChemistry, 2012)Three novel quinolizidine alkaloids, N-methylenehydroxycytisine (1), 6,7-dihydroxylupanine (2), and velutinine (3) have been isolated from the fruits and pods (1 and 2) and stem bark (3) of Sophora velutina subsp. ... -
The changing conceptions and focus of health research in East Africa
(Chemistry, 2006-06)Perceptions in health research are a product of the circumstances within the society, where the research activities are situated. In East Africa there has been a change in conceptualization over a period of time from an ... -
Distribution of applied cadmium in different size fractions of soils after incubation
(Chemistry, 2006)The size fraction of soils is one of the important factors that influence the retention of heavy metals. The sorptive properties of soils for heavy metals are principally associated with clay and silt-size fractions. ...
