Browsing Faculty of Science & Technology (FST) by Title
Now showing items 2849-2868 of 4283
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Op-38 further diterpenes from the leaf exudate of psiadia punctulata.
(Department of Chemistry, University of Nairobi,, 2001) -
Optical and electrical properties dependence on thickness of screen-printed tio2 thin films.
(University of Nairobi, 2016)Effect of film thickness on the optical and electrical properties of TiO2 thin films were studied. Thin films of different thicknesses were deposited by screen printing method on fluorine doped tin oxide coated on glass ... -
Optical and Electrical Properties of Magnesium Doped Zinc Oxide for Photovolraic Applications
(2014)This research is an experimental design which came up with the opticaJ and electrical properties of magnesium eloped zinc oxide foi; photovoltaic applications. The specific objectives are to determine the Optical properties, ... -
Optical and electrical properties of Pd doped Sn02 thin films deposited by spray pyrolysis
(University of Nairobi, 2013)Thin films of Sn02: Pd have been deposited on glass substrate at 450°C using an alcoholic precursor solution consisting of Tin (IV) Chloride (SnCl4.5H20) and Palladium Chloride (PdCl2). The influence of increasing Pd ... -
Optical Characterization of Copper Oxide Thin Films Prepared By Reactive Dc Magnetron Sputtering For Solar Cell Applications
(Department of Physics, University of Nairobi,Pwani university college, physics departmentKenyatta University, physics department, 2012)Cu2O thin films have been deposited using reactive dc magnetron sputtering technique using an Edward Auto 306 Magnetron Sputtering System. Transmittance and reflectance data in the range 300 nm-2500 nm were obtained ... -
Optical Characterization Of TiO2-bound (CuFeMnO4) Absorber Paint For Solar Thermal Applications
(University of Nairobi, 2016)Abstract A composite thin film consisting of TiO 2 (binder), uniformly mixed CuFeMnO 4 paint (solar absorber) was coated on textured aluminum sheets by dip coating. The film’s elemental analysis ... -
Optical Properties and Raman Studies of Amorphous Se-Bi Thin Films
(University of Nairobi, 2014)Flash evaporated amorphous Se_____Bi_(x = 0, 1, 2, 3, and 4 at.%) thin films of 350 پ} 10__ thickness have been investigated in the wavelength range of 200nm − 3000nm. It is found that the effect of increasing bismuth ... -
Optical Properties Of Flash Evaporated Amorphous Se100-xinx Thin Films For Cuinse2 Solar Cell Applications
(University of Nairobi, 2012)Amorphous Se100-XInX thin films were prepared by flash evaporation of the pre-melt quenched bulk samples. The samples were characterised and the suitability of each composition assessed towards applications as a buffer ... -
Optical properties of TiO2 based multilayer thin films
(University of Nairobi, 2012)Dielectric thin films of TiO2 have found many applications in various areas such as antireflective coatings, optical filters and photocatalysis among others. Optimization of material combinations and. coating conditions ... -
An optimal approach for generation of time delay algorithms for anti-air missiles
(School of Biological and Physical Sciences, University of Nairobi, 2001)This paper sets out a new approach for generating time before detonation in anti-air missiles equipped with proximity fuses. Conventional algorithms for determining these delay times rely on human effort, knowledge and ... -
Optimal Vaccination Strategies in an SIR epidemic model with time scales
(School of Mathematics, University of Nairobi, 1998) -
Optimal Vaccination Strategies in periodic settings and Threshold conditions: A Survey
(University of Nairobi.School of Mathematics, 2010) -
Optimal vaccination strategies in periodic settings: An orbital stability analysis
(University of Nairobi.School of Mathematics, 2013)We analyse a periodically driven SIR epidemic model for childhood related diseases, where the contact rate and vaccination rate parameters are considered periodic. The aim is to define optimal vaccination strategies for ... -
Optimisation of ethanol yield from cassava
(Centre For Biotechnology & Bioinformatics Publications, 2009) -
Optimised germination protocol for jackfruit seeds and evaluation of methods for extraction of DNA suitable for genetic analysis
(JPPS, 2022-08-18)Jackfruit (Artocarpus heterophyllus) is an underutilised plant that is promising in curbing food and nutritional security in sub-Saharan Africa. However, high level of secondary metabolites in its tissues significantly ... -
Optimization of acid activation conditions for Athi River Bentonite clay and application of the treated clay in palm oil bleaching
(2014)Athi River bentonite clay was activated using Sulphuric acid at various acid concentrations, clay-acid ratio, temperature and contact times. Optimization was based on palm oil bleaching performance. the chemical compositions ... -
Optimization of C/N ratio for Mesophilic anaerobic digestion from food wastes found in Nairobi a lab-scale case study
(University of Nairobi, 2016)Extensive work has been done on Anaerobic digestion of single substrates and using codigestion. In a number of cultures around the world, the wastes that are discarded as household waste may not easily fit in the biogas ... -
Optimization of enzymatic conversion of maize stover to bioethanol
(Centre For Biotechnology & Bioinformatics Publications, 2009) -
Optimization of essential oil extraction from eucalyptus grandis leaves by clevenger distillation
(University of Nairobi, 2016)Abstract : Recent statistics have shown a rise in the margin of consumption and utilization of essential oils, over the past years this has been marked by a divergence in the dependence of allophaticallopathic ... -
Optimization of fuzzy evapotranspiration model through neural training with input-output examples
(University of NairobiCollege of Biological and Physical Sciences,University of Nairobi, 2001)In a previous study, we demonstrated that fuzzy evapotranspiration (ET) models can achieve accurate estimation of daily ET comparable to the FAO Penman-Monteith equation, and showed the advantages of the fuzzy approach ...