Chuka University Institutional Repository: Recent submissions
Now showing items 601-620 of 15505
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Screening of Plant Extracts Possessing Methylenedioxyphenyl (MDP) Group as Potential Synergists in Insecticide Formulations using the Maize Weevil, Sitophilus Zea-mais (Motsch.)
(Merit Research Journals, 2020)Synergists are compounds that are either negligibly toxic or non-toxic to insects when applied on their own, but enhance the efficacy of an insecticide. Many insects are able to detoxify insecticide molecules and survive ... -
Variation in Seagrass Carbon Stocks Between Tropical Estuarine and Marine Mangrove-Fringed Creeks
(Frontiers in Marine Science, 2020)Seagrass and associated blue carbon ecosystems are important carbon sinks, and hence understanding their spatial and temporal variability is vital in appreciating their potential roles in climate change mitigation and ... -
Nutrient management options for enhancing productivity and profitability of conservation agriculture under on-farm conditions in central highlands of Kenya
(AIMS Agriculture and Food, 2020)Decline in soil fertility is one of the major constraints to sustainable crop production and profitability. To meet the increasing demand for the growing population the issue of low soil fertility needs to be addressed. ... -
Loss and grief counseling as a coping mechanism of widowhood: A comparative study of widowers and widows in Meru County Kenya
(academic Journals, 2020)Widowhood has been on increase globally and Kenya as nation is not exceptional. The state of widowhood globally has been made worse during this period of Corona Virus Disease which started in Wuhan in China in December ... -
Socio-Demographic, Nutritional and Adherence as Determinants of Nevirapine Plasma Concentration among HIV-1 Patients from Two Geographically Defined Regions of Kenya
(IISTE, 2020-10)Data are skewed on the role of Socio-demographic, nutritional and adherence related factors on the influence of nevirapine plasma concentrations among Kenyan population. This study rigorously determined these three factors ... -
Generating, Rectifying and Stepping Up the Voltage Output of Piezoelectric Plate
(International Journal of Research Publications, 2020)Energy is required in all sectors that either supports or improves human life. However, some of the methods of power generation e.g. the fossils fuels are non-renewable and have byproducts that harms the environment. For ... -
Characterization of rice husk ash prepared by open air burning and furnace calcination
(Academic Journals, 2020)Rice husk (RH) is an agricultural waste, and easily available in rice growing areas. The husk is mostly burnt as a way of getting rid of it. The ash obtained after burning or calcination may have economic application, ... -
Optical and scanning kelvin probe microscopic characterization of sol-gel synthesized aluminum doped zinc cobalt ferrite nanoparticles
(academic Journals, 2020)In this work, Zn1-xCoFe2AlxO4 (x=0, 0.2, 0.4, 0.6, 0.8 and 1.0) ferrites were synthesized using the sol-gel method. XRD analysis was done and confirmed the formation of spinel structure, where the particle size and lattice ... -
Surface potential, fermi level and band gap energy of copper doped magnesium nickel ferrite nanoparticles
(Sami Publishing Compan, 2020)Optical, electrical, and electronic properties of materials are essential in the fabrication of electronic devices. These properties can be improved through doping and reduction of the size of a material to nanoscale. ... -
Restoration of degraded grasslands, but not invasion by Prosopis julifora, avoids trade‑ofs between climate change mitigation and other ecosystem services
(Nature research, 2020)Grassland degradation and the concomitant loss of soil organic carbon is widespread in tropical arid and semi-arid regions of the world. Aforestation of degraded grassland, sometimes by using invasive alien trees, has ... -
Dietary diversity interventions and its impact on iron status of preschool children 36-59 months in Emali, Kenya
(Food Science & Nutrition Research, 2020)Background: Dietary diversity is considered crucial in ensuring adequate micronutrient intake, especially among children since they have increased nutrient requirements. Iron deficiency is the most common nutrient deficiency ... -
Multi-Mycotoxin Occurrence in Dairy Cattle and Poultry Feeds and Feed Ingredients from Machakos Town, Kenya
(MDPI, 2020-12)Mycotoxins are common in grains in sub-Saharan Africa and negatively impact human and animal health and production. This study assessed occurrences of mycotoxins, some plant, and bacterial metabolites in 16 dairy and 27 ... -
Assessment of the Effect of Solar Powered Milk Cooling Technology on Small Holder Dairy Farmer Earnings, Siaya County, Kenya
(IAR Journal of Agriculture Research and Life Sciences, 2020)The dairy industry in Kenya is dominated by small-scale farmers and is the most developed of the livestock sub-sectors. Yet, 85% of the approximately 850,000 small-scale dairy farmers have no access to electricity. The ... -
Factors Affecting Profitability of Agribusiness Activities: A Case Study of Smallholder Pig Farming in Tharaka-Nithi County, Kenya
(Asian Journal of Agricultural Extension, Economics & Sociology, 2020)Aims: There have been concerted efforts to commercialize the pig sub-sector so as to make it more profitable to farmers, especially smallholder farmers. Despite the development, the profitability in the sector has not ... -
Are the AgriTech Technologies Available, Adaptable and Practical to Young Farmers? Lessons from Tomato farmers in Kirinyaga County, Kenya
(Journal of Agricultural Science and Food Research, 2020)Information and communication technologies (ICTs) in particular mobile phone applications and internet are transforming how agribusiness is carried out in some parts of developing countries including Kenya. The spread ... -
Physicochemical Proprieties of Pond Water in the Economic Stimulus Programme (ESP) Fish Ponds in Tharaka-Nithi County, Kenya
(International Journal of Interdisciplinary Research and Innovations, 2020)In an effort to attain food security, Kenya has embraced aquaculture as one of its strategies. From 2009, the Government established thousands of fish ponds through the Economic Stimulus Programme (ESP). TharakaNithi ... -
EVALUATION OF TOMATO VARIETIES FOR RESISTANCE TO TOMATO LEAFMINER (TUTA ABSOLUTA) IN KIRINYAGA COUNTY, KENYA
(African Journal of Horticultural Science, 2020-07)The tomato leafminer (Tuta absoluta) (Meyrick) (Lepidoptera: Gelechiidae) is an invasive insect pest of tomato crops in many parts of Africa. It causes substantial economic losses to tomato crops in Kenya. Majority of ... -
NEW METALLOCHROMIC INDICATORS FOR COMPLEXOMETRIC TITRATION OF COPPER (II) IN PRESENCE OF INTERFERING SPECIES
(Life Science Informatics Publications, 2020-09)Six hydroxytriazenes has been introduced as a metallochromic indicator in the complexometric titration with EDTA and applied successfully to the titration of copper (II). A direct method of titration of Cu (II) with EDTA ... -
Fine Mapping and Transcriptome Analysis of Virescent Leaf Gene v-2 in Cucumber (Cucumis sativus L.)
(Frontiers in Plant Science, 2020)Leaf color mutants are the ideal materials to explore the pathways of chlorophyll metabolism, chloroplast development and photosynthesis system. In this study, a new virescent leaf mutant 104Y was identified by spontaneous ... -
Food safety knowledge and practices of street food vendors in selected locations within Kiambu County, Kenya
(African Journal of Food Science, 2020)The safety of street foods remains a public health concern especially in developing countries like Kenya where foodborne illnesses associated with these foods have often been reported. This study determined the food ...