Browsing Faculty of Science & Technology (FST) by Title
Now showing items 1188-1207 of 4283
-
Effect of morphology on electron drift mobility in porous TiO2
(Department of Physics, University of Nairobi,School of Mechanical, Materials, Manufacturing Engineering and Management, University of Nottingham, Nottingham NG7 2RD, UKDepartment of Materials, Imperial College London, SW7 2BP, UK, 2004)Porous titanium dioxide is an attractive material for solar cell application on account of its stability, electron transport properties, and the possibilities for controlling surface morphology as well as for its ease of ... -
Effect of Nairobi industrial area's effluents on levels of Ngong River pollution
(2009)The study focused on the levels of pollution in industrial effluents discharged into the section of Ngong River flowing adjacent to Nairobi's industrial area and how this pollution affected the river pollution levels. -
EFFECT OF NITRATION ON PRESSED TIO2 PHOTOELECTRODES FOR DYE-SENSITIZED SOLAR CELLS
(Department of Physics, University of Nairobi,, 2007)TiO2 films made by the pressing method and then nitrogen-doped by heat-treatment in nitrogen, oxygen and argon gas mixture have been studied and the effects of structural characteristics, optical and electrical properties ... -
Effect of nitrogen and water uptake on yield of wheat
(Kluwer Academic PublishersCollege of Biological Sciences, University of NairobiDepartment of Soils, Punjab Agricultural University, 141004, Ludhiana, India, 1992)For 2 years, field experiments were conducted to study the direct and interactive effects of water and nitrogen uptake at different growth stages on grain yield of wheat, grown on coarse textured alluvial soil of Ludhiana. ... -
The effect of non-prey food, mainly pollen, on the development, survival and fecundity of Ambylseius gossipi (Acarina: Phytoseiidae). Ent. Exp. & Appl., 11: 269
(School of Biological Sciences, 1968) -
The effect of oocytic atresia on the fecundity estimates of Siganus sutor off Kenyan marine inshore waters
(1992)n the strongly group-synchronized oocyte development ofSiganus sutor (Valenciennes, 1835) the group of oocytes to be released in the following spawning, is identified. The smallest size of oocyte belonging to this group ... -
Effect of organic and chemical fertilization on the distribution of soil predacious mites and nematodes in a citrus orchard.
(University of NairobiSchool of Biological and Physical Sciences, 1997)Abstract Not Available -
The Effect of Organic-Based Nutrient Management Strategies on Soil Nutrient Availability and Maize Performance in Njoro, Kenya
(2011)A field experiment based on the concept of organic nutrient management was conducted in Njoro, Kenya, to test the effect of improved legume fallows, crotalaria (CR), lablab (LB), garden pea (GP) and natural fallow (NF, as ... -
The Effect of overfishing on the life- history strategy of Nile tilapia, Oreochromis niloticus in the Nyanza Gulf of Lake Victoria, Kenya
(School of Physical Sciences, 2007)Studies were conducted on reproductive characteristics of Oreochromis niloticus from 1998 to 2000. The results were combined with published work on growth parameters of O. niloticus from 1985 to 1999 in order to establish ... -
Effect of permethrin-impregnated nets on exiting behavior, blood feeding success, and time of feeding of malaria mosquitoes (Diptera: Culicidae) in western Kenya
(School of Biological Sciences, 2001)The impact of permethrin-treated bednets on the feeding and house entering/exiting behavior of malaria vectors was assessed in two studies in western Kenya. In one study, matched pairs of houses were allocated randomly to ... -
Effect of photoperiod, light intensity and temperature on the development and reproduction of the predacious mite Amblyseius brazilli (Mesostigmata
(School of Biological and Physical sciences, 1977) -
Effect of plant-derived organic binders on fracture toughness and fatigue of kaolin-based refractories
(Department of Physics, University of Nairobi,, 2008)The fracture properties of kaolin-based refractories prepared using plant-derived binders from okra and “mrenda” have been investigated and compared. It was observed that the MOR of fired samples improved from 37.5 ± 0.1 ... -
Effect of Plasmodium falciparum on the feeding behaviour of naturally infected Anopheles mosquitoes in Western Kenya
(University of NairobiCollege of biological and physical science, 1992) -
The effect of pollen feeding on the predatory efficiency of Amblyseius gossipi (Acarina: Phytoseiidae)
(1968)A positive correlation between rate of prey consumption by A. gossipi and the prey density T. cinnabarinus was found at presence or absence of pollen of Zea mays. Pollen had no effect on prey consumption at prey concentrations ... -
Effect of Post-Treatment Temperature on the Insecticidal Activity of Melia volkensii (Gurke) Fruit Extract Against the African Migratory Locust Locusta migratoria (Reiche & Fairmaire)
(College of Biological Sciences, University of Nairobi, 2002)The influence of post- treatment temperature on the insecticidal activity of Melia volkensii (Gurke) fruit extract against the African migratory locust, Locusta migratoria (Reiche & Fairmaire) is reported. In laboratory ... -
Effect of Post-Treatment Temperature on the Insecticidal Activity of Neem, Azadirachta Indica A. Juss. Seed extract on Schistocerca Gregaria (Forskal): A preliminary Report
(Department of Zoology, University of NairobiResearch and Extension Division, Egerton University, 2000)The influence of post-treatment temperature on the insecticidal activity of Azadirachta indica (A. Juss) seed extract against the desert locust, Schistocerca gregaria (Forskål) is reported. In tests on adults, the toxicity ... -
Effect of process-related parameters on band gap of electrophoretically deposited tio2nb2o5 composite thin films
(University of Nairobi, 2014)Nano-crystalline composite thin films of titanium dioxide and niobium (v) oxide (TiO2/Nb2O5 ) were successfully deposited on fluorine-doped tin oxide (FTO) coated glass substrate using electrophoretic deposition (EPD) ... -
Effect of puparia incubation temperature: increased infection rates of Trypanosoma congolense in Glossina morsitans centralis, G. fuscipes fuscipes and G. brevipalpis
(School of Biological Sciences, 1992)Puparia of Glossina morsitans centralis (Machado), G.fuscipes fuscipes (Newstead) and G.brevipalpis (Newstead) were incubated at 25 +/- 1 degrees C, 28 +/- 1:25 +/- 1 degrees C, day:night or 29 +/- 1 degrees C throughout ... -
Effect of pyridine on the porosity and redox properties of polythiophene
(Department of Chemistry, University of Nairobi, 1989)