School of Biological and Physical Science: Recent submissions
Now showing items 121-140 of 954
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Kinetic, sorption isotherms, pseudo-first-order model and pseudo-second-order model studies of Cu (II) and Pb (II) using defatted Moringa oleifera seed powder
(The Journal of Phytopharmacology, 2016)In the recent decades, there has been a concern on heavy metals in waste water and high cost of conventional methods of removing heavy metals, for this reason search on adsorbents of biological origin which is low cost and ... -
Comparative Studies of Alum, Maerua Subcordata Root Tuber Powder and Juice Extract as Coagulation/Flocculation Agents
(2016)Turbidity is a great problem in water treatment. Comparative study was done on alum a commercial coagulant; Maerua subcordata root powder and juice extract a locally available natural coagulant to reduce turbidity and ... -
Antimycobacterial and cytotoxic activities of extracts from fungal isolates of Lake Magadi
(AJOL, 2017)In this study, antimycobacterial and cytotoxic activities of ethyl acetate extracts of fungal isolates from Lake Magadi were evaluated. The extracts were tested against Mycobacterium madagascariense (MM) and M. indicus ... -
Structural and Optical Probe into Rare Earth Doped ZnO for Spectral Conversion in Solar Cells
(Jenny Stanford Publishing, 2022)This chapter examines the relationship between structure and optoelectronic properties of rare earth doped Zinc oxide (ZnO) thin films fabricated by RF magnetron sputtering for photovoltaic applications. A doped ZnO layer ... -
Anomalous photovoltaic behavior under illumination of γ-In2Se3 nanostructures used as hole transport layer in organic solar cell
(Pergamon, 2022)Indium selenide is currently receiving tremendous attention in device application and studies related to two dimensional nanostructured technologies. Non-layered γ-In2Se3, which is a stable phase at room temperature, was ... -
Accurate Ab-initio calculation of elastic constants of anisotropic binary alloys: A case of Fe–Al
(Solid State Communications, 2022)The final formed phases of alloys are functions of the chemical compositions of the mixture. The overall mechanical moduli of the alloy are also functions of the phases present. Most of the previous computed elastic constants ... -
Monoaminergic system involvement in the antidepressant-like and anxiolytic-like properties of novel β-dihydroagarofuran sesquiterpene alkaloid and triterpenes isolated from Gymnosporia heterophylla aerial parts in mice
(Pergamon, 2022)Gymnosporia heterophylla (synonym Maytenus) is widely used in folk medicine for the treatment of various illness including neurological diseases. This study presents the antidepressant-like and anxiolytic-like effects of ... -
Optimization of biodiesel synthesis from Jatropha curcas oil using kaolin derived zeolite Na–X as a catalyst
(Royal Society of Chemistry, 2022)Biodiesel is an alternative renewable green fuel obtainable from the reaction of plant or animal oil with a low molecular weight alcohol in the presence of a catalyst. However, the cost of its production remains high due ... -
The effect of inoculating Bradyrhizobium liaoningense on growth, chlorophyll concentration, nodulation and yield of soya beans
(SciCell publishing company, 2022)Soya bean is important staple food crops in Western Kenya. Legumes play a significant role in agriculture by fixing nitrogen. Currently Kenya is experiencing low yield of soya beans. Approximately 0.8 t/ha is under production ... -
Risk associations of submicroscopic malaria infection in lakeshore, plateau and highland areas of Kisumu County in western Kenya
(Public Library of Science, 2022-05)Persons with submicroscopic malaria infection are a major reservoir of gametocytes that sustain malaria transmission in sub-Saharan Africa. Despite recent decreases in the national malaria burden in Kenya due to vector ... -
Health facility practices and patterns of prescription influencing health-seeking behaviour among caregivers of children diagnosed with pneumonia in Endebess Sub-county, Kenya
(International Society of Global Health, 2022-06)Pneumonia accounts for 16% of all child deaths in Kenya, and it is the second killer of children under the age of five. Pneumonia burden is attributed to inadequate access to healthcare and poor health-seeking by caregivers. ... -
Health care provider practices in diagnosis and treatment of malaria in rural communities in Kisumu County, Kenya
(BioMed Central, 2022)Accurate malaria diagnosis and appropriate treatment at local health facilities are critical to reducing morbidity and human reservoir of infectious gametocytes. The current study assessed the accuracy of malaria diagnosis ... -
Application of Crude Enzymatic Extract In Mushroom Processing To Recover High Value Products
(Research square, 2021-10-21)In the present study, a fungal strain was isolated from mushroom waste dump-site and was described based on the morphological and molecular characteristics. The crude enzymatic extract was prepared by fermenting pineapple ... -
Synthesis, structural assignments and antiinfective activities of 3-O-benzyl-carvotacetone and 3-hydroxy-2-isopropyl-5-methyl-p-benzoquinone
(Taylor & Francis, 2021-11)In an attempt to synthesize carvotacetone analogues, new 3-O-benzyl-carvotacetone (10) and previously reported 3-hydroxy-2-isopropyl-5-methyl-p-benzoquinone (11) were synthesized from piperitone (7). In this work, we ... -
Utilization of fruit waste substrates in mushroom production and manipulation of chemical composition
(Elsevier, 2022-01)The current study evaluated the effect of mushroom cultivation using fruit waste substrates on yield performance and antioxidant activities. The total phenolic content and the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical ... -
Isolation and detailed 1H and 13C NMR structural assignment for three trachylobanes from Psiadia punctulata (Asteraceae) grown in Africa
(Elsevier, 2022-04-01)The first isolation of a trachylobane from an African specimen of Psiadia punctulata (Asteraceae) is presented in this paper. A complete 1H and 13C NMR spectral analysis of this compound and two other trachylobane diterpenes, ... -
A new gnidiflavanone-flavonol dimer and other constituents from Gnidia apiculata
(Taylor & Francis, 2022)A new 3,800-flavanone-flavonol dimer gnidiflavanone-flavonol (1) and 10 known compounds (2–11), including four rare primula type flavones 2–5, were isolated from the roots of Gnidia apicu lata. Compounds 2–5 and 7 were ... -
Synthesis of a pyrrolidine derivative of a carvotacetone and monoterpenes for anti-methicillin-resistant Staphylococcus aureus and anti-cryptococcal properties
(Taylor & Francis, 2022-05-03)Monoterpene derivatives are of great biological relevance in the pharmaceutical industry. In the present study, pyrrolidine deriva tive of a carvotacetone, 3-O-benzylcarvotacetone (1), and selected monoterpenes ... -
Temperature-Dependent Elastic Constants of Substrates for Manufacture of Mems Devices
(Kabarak university, 2022)We present a comparative computational study of temperature-dependent elastic constants of silicon (Si), silicon carbide (SiC) and diamond as substrates that are commonly used in the manufacture of Micro-Electromechanical ... -
Foliar Diseases and the Associated Fungi in Rice Cultivated in Kenya.
(MDPI, 2022)We conducted a survey to assess the occurrence and severity of rice blast and brown spot diseases on popular cultivars grown in the Busia, Kirinyaga, and Kisumu counties of Kenya in 2019. Working with agricultural extension ...