Browsing Journal Articles (PAS) by Title
Now showing items 230-249 of 258
-
Species composition and distribution of mayflies (Ephemeroptera) in relation to land use systems along the Thika River, Kenya
(Taylor & Francis Group, 2021-02-26)Mayflies (order Ephemeroptera) are widely distributed and commonly used in biological assessment of water quality because of their sensitivity. Their application as bio-indicators in tropical streams and rivers, however, ... -
Spectrophotometric Determination of Traces of Lead (II) in Spinach Samples Marketed in Chuka, Kenya
(2015-11-15)Three hydroxytriazenes were synthesized and studied for the spectrophotometric determination of Lead (II) in spinach samples. Lead (II) reacts with hydroxytriazenes to form a 1:2 yellow complex, having a sensitive absorption ... -
Spiders (Arachnida: Araneae) from black cotton soil habitats of a highland savanna biome in Laikipia, central Kenya
(2004)Spiders were sampled at Mpala Research Centre, Laikipia, Kenya using pitfall trapping and sweep netting. Sampling was conducted from May 2001 to July 2002. A total of 10,487 individuals from 132 species belonging to 30 ... -
Stored Grains Protection Activity of Ocimum Suave Extracts and Compounds on Larger Grain Borer
(IOSR Journal of Biotechnology and Biochemistry (IOSR-JBB) Volume 8, Issue 4 (Jul. – Aug. 2022), PP 05-10, 2022)Post-harvest pests cause serious losses to agricultural products in Africa. The pests consist mostly of beetles or moths and infest the grains at the crop stage or during the storage. Larger grain borer, Prostephanus truncatus ... -
Strain variation in vitamin A (retinol) status of streptozotocin-induced diabetic rats.
(International Journal for Vitamin and Nutrition Research, 1996)Decreased plasma concentrations of vitamin A (retinol) and retinol-binding protein have been previously identified in human subjects with type I diabetes mellitus. The present study was undertaken to investigate the effects ... -
Streptozotocin-induced diabetes in rats is associated with impaired metabolic availability of vitamin A (retinol).
(The British Journal of Nutrition, 1996-04)Using streptozotocin-induced diabetic Wistar rats, studies were carried out to examine the metabolic availability of vitamin A in the plasma, liver and the retina of the eye. Control and diabetic rats were fed ad lib. on ... -
Streptozotocin-induced diabetes lowers retinol-binding protein and transthyretin concentrations in rats.
(The British Journal of Nutrition, 1996-12)Retinol-binding protein (RBP) and transthyretin (TTR) in the plasma, liver and kidney, retinol in plasma, and total vitamin A in the liver were measured in rats 6 weeks after diabetes mellitus had been induced by streptozotocin ... -
Structural and optical properties of novel CdSe nanoparticles produced via a facile synthetic route: Studies on the effects of cadmium sources
(2019-04)We report on the successful synthesis of CdSe nanoparticles (NPs) via a facile aqueous approach. Investigation on the effects of various cadmium sources in the precursor solution on the CdSe NPs is discussed. The structural ... -
Structural, optical and luminescence properties of CdTe quantum dots: Investigation on the effect of capping ligand ratio
(IOP Publishing Ltd, 2019-03)Well-crystallized cadmium telluride quantum dots (CdTe QDs) were fabricated by a simple wet chemical process under open air condition at a growth temperature of 100 °C. Various amounts of the capping ligands were used in ... -
Survey of sweet potato viruses in Western Kenya and detection of cucumber mosaic virus
(Journal of Plant Pathology, 2010)Sweet potato is an important food crop worldwide, but several pests and diseases limit its production. In eastern Africa, virus-induced diseases rank second to weevils in causing yield reduction. Symptomatic sweet potato ... -
Survival Analysis of Cancer Patients Using Weibull Parametric Model
(2019-05)Cancer incidence and mortality are rapidly growing worldwide. The reasons are complex but reflect both aging and growth of the population, as well as changes in the prevalence and distribution of the main risk factors for ... -
Synthesis, Antiplasmodial Activity, and β‑Hematin Inhibition of Hydroxypyridone−Chloroquine Hybrids
(American Chemical Society, 2013)A series of noncytotoxic 4-aminoquinoline-3-hydroxypyridin- 4-one hybrids were synthesized on the basis of a synergistic in vitro combination of a precursor N-alkyl-3-hydroxypyridin-4-one with chloroquine (CQ) and tested ... -
Synthesis, Reactivity and Stability of Aryl Halide Protecting Groups towards Di-Substituted Pyridines
(2016)This paper reports the synthesis and reactivity of different Benzyl derivative protecting groups. The synthesis and stability of Benzyl halides, 4-methoxybenzyl halides, 3,5-dimethoxybenzyl halides, 3,4-dimethoxybenzyl ... -
Termite species and functional groups in maize intercrop systems in Machakos County, Kenya
(Elsevier, 2022-03)Termites are important ecosystem engineers in the tropics but certain termite species cause damage to economically important crops. In Africa, termites cause >50% damage in maize. This study evaluated the effect of ... -
Th17 Cells as Potential Probiotic Therapeutic Targets in Inflammatory Bowel Diseases
(2015)Inflammatory bowel diseases (IBD) are characterized by wasting and chronic intestinal inflammation triggered by various cytokine-mediated pathways. In recent years, it was shown that T helper 17 (Th17) cells are involved ... -
Threats of Land Use Changes on Wetland and Water Areas of Murang’a County, Kenya
(2021-06)Globally, wetlands have declined in area by over 50% since 1900, due to changes in land-use patterns, converting them into farmlands, human settlements, urban centers, and infrastructure development. Land-use changes also ... -
Time series analysis of air pollution trends in Kenya using environmental Kuznets curve
(2020-12)Air pollution occurs when harmful or excessive quantities of substances including gases are introduced into Earth's atmosphere. It may cause diseases, allergies and even death to humans; it may also cause harm to other ... -
Time series analysis of Nandi county government revenue using seasonal autoregressive integrated moving average (SARIMA) model
(2020-10)In Kenya, there are two levels of government namely the National Government (NG) and County Governments (CGs). NG’s revenue is mainly from taxation, borrowing, and grants among other sources while CGs rely on allocation ... -
Time Series Analysis of Road Accidents Using Autoregressive Integrated Moving Average (ARIMA) Model
(2019-04)The road transport industry in Kenya plays a vital role in the life of the majority of her citizens. Many Kenyans utilize different transport modes to reach their various destinations daily. Nearly 3000 people killed on ...