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Browsing Faculty of Applied Science and Technology by Issue Date

Browsing Faculty of Applied Science and Technology by Issue Date

Now showing items 1-20 of 94

Efforts to identify early spontaneous embryo mortality in the rhesus monkey (Macaca mulatta)

Mbai, Fiona N (1989)
Glutathione S-Transferases: α-Naphthyl Acetate Activity and Possible Role in Insecticide Resistance

Lalah, Joseph O; Chien, Cheng-I; Motoyama, Naoki; Dauterman, Walter C (1995)

Rat liver and house fly, Musca domestica L., glutathione S-transferases were purified by affinity chromatography and chromatofocusing. The specific activity with α-naphthyl acetate (a substrate, for general esterase activity) ...
Characterisation of Murine Endometrial Epithelium in Vitro: Effects of Epidermal Growth Factor.

Mbai, Fiona N (1997)
The metabolism and distribution of [14C‐phenyl]‐ethyl parathion in a tropical soil under field conditions

Lalah, Joseph O; Wandiga, Shem O (1999)

The persistence, distribution and metabolism of [l4C‐phenyl]‐ethyl parathion applied to soil columns in an agricultural farm were investigated under tropical field conditions. Volatilization, soil microbial activity, ...
Regioselective Synthesis of a Branched Isomer of Nonylphenol, 4-(3′,6′-Dimethyl-3′-heptyl)phenol, and Determination of its Important Environmental Properties

Lalah, Joseph O; Schramm, Karl-Werner; Lenoir, Dieter; Henkelmann, Bernhard; Hertkorn, Norbert; Kettrup, Antonius; Günther, Klaus (2001)

A method for the synthesis of a pure nonylphenol isomer, 4-(3′,6′-dimethyl-3′-heptyl)phenol, by Friedel–Crafts reaction between anisole and 3-bromo-3,6-dimethylheptane that gives a 47.3 % overall yield is reported. The ...
The effect of boiling on the removal of persistent malathion residues from stored grains

Lalah, Joseph O; Wandiga, Shem O (Elsevier, 2002)

This study aimed at finding the fate of malathion in maize grains and beans stored in a tropical laboratory for 12 months at temperatures of 20–24°C, relative humidity of 42–80% and grain moisture contents of 11.7–12.5% ...
Field Responses of Tsetse Flies (Glossinidae) and Other Diptera to Oils in Formulations of Deltamethrin

Mireji, PO; Mabveni, AM; Dube, BN; Ogembo, JG; Matoka, CM; Mangwiro, TNC (2003)

Investigations were conducted to establish field responses of Glossina pallidipes, G. m. morsitans, muscoids and tabanids to castor, raw linseed, paraffin and chlorinated paraffin oils in deltamethrin suspension concentrate ...
The bioaccumulation and fate of a branched 14C-p-nonylphenol isomer in Lymnaea stagnalis L.

Lalah, Joseph O.; Behechti, Akbar; Severin, Gabriele F; Lenoir, Dieter; Günther, Klaus; Kettrup, Antonius; Schramm, Karl-Werner (2003)

A single branched isomer of p-nonylphenol, 4(3′,6′-dimethyl-3′-heptyl)-phenol, previously identified by gas chromatography-mass spectrometry as one of the major constituent isomers in p-nonylphenol (constituting approximately ...
Polynuclear aromatic compounds in kerosene, diesel and unmodified sunflower oil and in respective engine exhaust particulate emissions

Lalah, Joseph O; Kaigwara, Peter N (2005)

Polynuclear aromatic compounds (PAC) were characterized in diesel fuel, kerosene fuel and unmodified sunflower oil as well as in their respective engine exhaust particulates. Diesel fuel was found to contain high amounts ...
Gender differences in cardiovascular disease: The effects of estrogen

Mbai, Fiona N; Hamilton, Karyn L; Knowlton, Anne A (2005)

Estrogen and its therapeutic application in cardiovascular disease are highly controversial. There has been a paucity of basic research on estrogen and its molecular effects, which has weakened the underpinnings of clinical ...
Astronomy in the cultural heritage of African societies

Baki, Paul (2006)

The African perspectives of astronomy are explored from the point of view of using indigenous knowledge of the night sky for purposes of addressing local challenges such as food insecurity and periodic natural weather ...
Differential induction of proteins in Anopheles gambiae sensu stricto (Diptera: Culicidae) larvae in response to heavy metal selection

Mireji, Paul O; Keating, Joseph; Kenya, Eucharia; Mbogo, Charles; Nyambaka, Hudson; Osir, Ellie; Githure, John; Beier, John (2006)

Investigations were conducted to establish the magnitude and pattern of differential expression of proteins due to generational selection of third instar Anopheles gambiae s.s. Giles larvae by cadmium, copper and lead heavy ...
Seasonal variation in concentrations of organochlorine pesticide residues in tropical estuarine sediments along the Indian Ocean Coast of Kenya

Barasa, MW; Wandiga, SO; Lalah, JO (2007)
Heavy metals in mosquito larval habitats in urban Kisumu and Malindi, Kenya, and their impact

Mireji, PO; Keating, Joseph; Hassanali, Ahmed; Mbogo, Charles M; Nyambaka, Hudson; Kahindi, Samuel; Beierf, John C (2008)

Concentrations and distribution of cadmium, chromium, copper, iron, lead, manganese and zinc in mosquito larval habitats in urban Kisumu and Malindi, Kenya and their effect on the presence of Anopheles gambiae, Aedes ...
Effects of Dietary Decosahexaenoic Acid (DHA) on eNOS in Human Coronary Artery Endothelial Cells

Stebbins, Charles L; Stice, James P; Hart, Michael; Mbai, Fiona N; Knowlton, Anne A (2008)

Endothelial dysfunction occurs in heart disease and may reduce functional capacity via attenuations in peripheral blood flow. Dietary decosahexaenoic acid (DHA) may improve this dysfunction, but the mechanism is unknown. ...
Seasonal variability of persistent organochlorine pesticide residues in marine fish along the Indian Ocean coast of Kenya

Lalah, Joseph O.; Barasa, M. W.; Wandiga, S. O. (Taylor & Francis, 2008-05-01)

The adsorption behaviour of DDT in a tropical silt-clay soil from Kenya showed that addition of increasing metal ion concentrations from 10 to 100 lg/g of soil, reduced the % DDT adsorption in the soil by factors ranging ...
Anthropogenic Sources of Heavy Metals in the Indian Ocean Coast of Kenya

Lalah, Joseph O. (Springer Science+Business Media, LLC, 2008-11-28)

Water and surface sediment samples from Rivers Sabaki, Ramisi and Vevesi that flow into the Indian Ocean coast of Kenya were analysed for heavy metals. The sediment concentrations of exchangeable cations (in μg/g) for ...
Spartial and Seasonal Variations in Concentrations of Polycyclic Aromatic Hydrocarbons in Water and Sediment of Kisumu City Bay of Winam Gulf, Lake Victoria-Kenya

Kwach, Bowa O; Lalah, Joseph O; Wandiga, O. Shem (2009)

Seasonal and offshore concentration variations for selected sixteen priority pollutant polycyclic aromatic hydrocarbons (PAHs) in surface sediments and water of Car Wash and Kisat areas of Winam Gulf, Lake Victoria, have ...
Trace metals in Lates niloticus and Rastrineobola argentea samples for human consumption at Winam Gulf of Lake Victoria

Ongeri, DMK; Lalah, JO; Wandiga, SO; Schrammc, K.-W; Michalke, B (2009)

Trace metals were determined in the two most abundant fish species in the Winam Gulf of Lake Victoria (Lates niloticus and Rastrineobola argentea). The results show that the concentratios of the metals have no significant ...
The dissipation of hexazinone in tropical soils under semi-controlled field conditions in Kenya

Lalah, Joseph O; Muendo, Bonface M.; Getenga, Zachary M (2009)

The dissipation of hexazinone (Velpar) in two tropical soil types in Kenya was studied under field and semi-controlled conditions for a period of 84 days. The dissipation was found to be very rapid and this could be ...

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