School of Biological and Physical Science: Recent submissions
Now showing items 421-440 of 954
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A Critical Overview of the Kenyan Prisons System: Understanding the Challenges of Correctional Practice
(International Journal of Innovation and Scientific Research, 2014)Kenya has been widely criticized for its on-going abuse of human rights and corruption in government administration. Moreover, the prison system in Kenya has been termed to be dilapidated since they were adopted from ... -
Perceived Impact of the Youth Enterprise Development Fund on the Youth Towards the Establishment of Small Scale Rural Enterprises in Turbo Division, Uasin-gishu County, Kenya
(Universitas Sulawesi Barat, 2017)The inception of the Youth Enterprise Development Fund has seen the rise of youth groups in rural areas. This paper is thus aimed at understanding the impact of the fund towards the youth establishment of small scale ... -
Devolved ethnicity in the Kenya: Social, economic and political perspective
(Sciendo, 2018)act This paper examines the ethnicity as an issue prevailing upon the Kenyan society and its implication on the social, economic and political dimensions in Kenya. Devolved ethnicity has been seen to be on the arise since ... -
The plight of the house-helps (domestic workers) in selected estates in Eastland’s area, Nairobi County, Kenya
(International Journal of Social Sciences, 2019)In Kenya, households in the middle class suburbs have increasing involvement of house-helps who in most cases take care of household chores. Moreover house helps have borne the brunt of being among the least paid in the ... -
Accessing public transportation policies for persons living with disabilities in Kenya
(International Journal of Social Sciences, 2019)Despite the fact that the constitution of 2010 has given priority to persons with disabilities with specific focus to bill of right, their right to movement is still curtailed in the public transportation sector system in ... -
Supporting Information for: Rheological Properties of Blends of Isotactic Polystyrene–
(2013)Figure S1: Optical micrographs and atomic force microscopy (AFM) images for the 95% iPpMS–5% iPS binary system dewetted at 𝑇dew= 240℃ and at different incubation times.(a) shows a 200 nm film before the dewetting ... -
Effect of Ga Incorporation and Film Thickness on the Optical Properties of as-Deposited Amorphous GaxSel-x Thin Films
(University if Nairobi Research archive, 2014)Flash evaporated amorphous GaxSe1-x (x = 0, 1, 2, 3, and 4 atomic %) on glass substrates have been investigated within a 500nm-1500nm spectral range. Film thicknesses explored were ; 200±10nm, 265±10nm, 330±10nm, and ... -
Optical properties and Raman studies of amorphous Se-Bi thin films
(The African Review of Physics, 2014)Flash evaporated amorphous Se Bi (x = 0, 1, 2, 3, and 4 at. %) thin films of 350 ± 10 thickness have been investigated in the wavelength range of 200nm − 3000nm. It is found that the effect of increasing bismuth ... -
Investigation of the Effect of Film Thickness on the Optical Properties of Amorphous Se85-xTe15Sbx Thin Films
(Africa Journal of Physical Sciences, 2014)Amorphous thin films of Se85-xTe15Sbx (x = 0.0, 0.5, 2.5, and 5.0 at. %) deposited by flash evaporation technique, have been investigated in the wavelength range of 500nm-3000nm. It is found that the effect of increasing ... -
Stability Investigation in the Optical Properties of Thermally Evaporated Ge5Se95-x Znx Thin Films
(University of Nairobi, Kenya, 2015)Selenium-based chalcogenides are useful in telecommunication devices like infrared optics and threshold switching devices. The investigated system of Ge5Se95-xZnx (0.0 ≤ x ≤ 4 at.%) has been prepared from high purity ... -
Role of bismuth and substrate temperature on the optical properties of some flash evaporated se100-x bix glassy system
(University of Nairobi, Kenya, 2015)Chalcogenide glasses are very important in the modern technology especially selenium-based. These glasses are sensitive to electromagnetic radiation useful in the infrared optics. The study investigated the effect of ... -
Compositional and Thickness Effects on the Optical Properties of Zinc–Doped Selenium–Antimony Thin Films
(Tanzania Journal of Science, 2018)Chalcogenide system of antimony (Sb)-selenium (Se)-zinc (Zn) system is a promising semiconductor for phase change memory devices due to its thermal stability and low power consumption. The study investigated the effect of ... -
Dewetting Rheology for Determining Viscoelastic Properties of Nonequilibrated Thin Polymer Films
(American Chemical Society, 2019)We performed systematic dewetting experiments on isotactic poly(para-methylstyrene) (iPpMS) films to explore the temperature dependence of the viscoelastic behavior of these films. We quantified the amount of residual ... -
Rheological Properties of Blends of Isotactic Polystyrene–Isotactic Poly(para-methylstyrene) Films Derived from a Comparative Dewetting Study
(American Chemical Society, 2020)We examined changes in rheological properties of nonequilibrated spin-coated thin films of isotactic polystyrene (iPS) and isotactic poly(para-methylstyrene) and blends thereof by dewetting experiments. For 200 nm thick ... -
Comparative efficacies of closantel, ivermectin, oxfendazole, thiophanate and levamisole against thiabendazole resistant Haemonchus contortus in sheep
(University of Nairobi., 1996)Forty-nine sheep artificially exposed to a thiabendazole (TBZ) resistant isolate of Haemonchus contortus were assigned to 7 groups of 7 animals each and used to conduct a controlled anthelmintic trial. One group of sheep ... -
A Geographic Information System Applied To A Malaria Field Study In Western Kenya
(Masaimara university, 1998)This paper describes use of the global positioning system (GPS) in differential mode (DGPS) to obtain highly accurate longitudes, latitudes, and altitudes of 1,169 houses, 15 schools, 40 churches, four health care centers, ... -
Halitusis: Analysis of the various contribution sites
(university of Nairobi reaserch archive, 2002)o remove or modify fluorotic enamel stains using a combined chemical micro-abrasion and bleaching technique. Design: An in-vivo study was carried out. A sample of 21 participants was randomly selected from patients ... -
Gastrointestinal Parasite Infections Of Sheep And Goats In A Semi-arid Area Of Machakos District, Kenya
(University of Nairobi University archive, 2004)A survey of gastrointestinal parasite and liver fluke infections of small ruminants was conducted for 18 months on two farms in Kathiani Division of Machakos District, Kenya. The effects of host species, season and age on ... -
Prevalence of porcine cysticercosis and risk factors for Taenia solium taeniosis in Funyula Division of Busia District, Kenya
(Kenya veterinarian, 2005)The prevalence of Cysticercus cellulosae in pigs was studied by antemortem lingual examination while the risk factors for Taenia solium taeniosis were evaluated by administration of a standard questionnaire. Antemortem ... -
Prevalence of porcine cysticercosis and risk factors for Taenia solim cysticercosis/taeniosis in three divisions of Busia district, Kenya
(Inter-African Bureau for Animal Resources, 2006)Prevalence of porcine cysticercosis and risk factors for Taenia solim cysticercosis/taeniosis in three divisions of Busia district, Kenya.
