Výsledky vyhledávání - "David K. Kariuki"

Akademický článek

Synthesis and characterization of ionomer-type cements from alkaline-activated kaolinite

Autor: Olivia A. Osiro, David K. Kariuki, Loice W. Gathece

Publikováno v: Journal of Non-Crystalline Solids: X, Vol 13, Iss , Pp 100079- (2022)

The objective was to synthesize ionomer-type cements from alkaline-activated kaolinite and describe their setting characteristics, compressive strength and fluoride ion releasing properties. Aluminosilicate phases were visible on XRD spectra with min

Externí odkaz: https://doaj.org/article/dd2a6b59416c4986995c375fb062732c

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Occurrence and Distribution of Aflatoxin in Maize from Selected Counties, Eastern Region, Kenya

Autor: Nicholas M. Jacob, Shem O. Wandiga, Vincent O. Madadi, David K. Kariuki

Publikováno v: Journal of Agricultural Policy. 3:7-20

Purpose: The study aimed to assess the occurrence and distribution of aflatoxin contamination on dry maize in different types of stores in Meru, Embu, Isiolo, Makueni and Machakos Counties of Eastern region of Kenya.Methodology: Automatic spear sampl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47ecd82cd93dc1f3b81e7ed80f729dcf
https://doi.org/10.47941/jap.438

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Effect of Farm Additives on the Potential Bioavailability of Some Nutritional Elements from Kenyan Wild Plants

Autor: David K. Kariuki, Z. M. Getenga, Richard Mogwasi

Publikováno v: Biological Trace Element Research. 195:658-668

In this study, the effects of farm additives on eight wild plants from Nyamira County, Kenya were evaluated for their release of iron, copper, calcium, potassium and magnesium. A hundred and sixty traditional medicinal practitioners were surveyed and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4694d010672eee3f211940cb050c231b
https://doi.org/10.1007/s12011-019-01855-8

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Comparison of aqueous and enzymatic extraction combination with sequential filtration for the profiling of selected trace elements in medicinal plants from Kenya

Autor: David K. Kariuki, M. Z. Getenga, Volker Nischwitz, Richard Mogwasi

Publikováno v: Journal of Trace Elements in Medicine and Biology. 54:1-7

This work presents results for the profiling of eight essential elements (Co, Cu, Ni, V, Mo, Mn, Zn and Cr) in aqueous and enzymatic extracts of eight anti-diabetic medicinal plants, used by Traditional Medicine Practitioners from Nyamira County, Ken

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5332bbf2c6dcda25d62e5a6bc9563d7
https://doi.org/10.1016/j.jtemb.2019.03.003

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Electronically Divergent Triscyclometalated Iridium(III) 2-(1-naphthyl)pyridine Complexes and Their Application in Three-Component Methoxytrifluoromethylation of Styrene

Autor: Lydia W. Njenga, Ola F. Wendt, Peter Fodran, Carl-Johan Wallentin, Rachael E.N. Njogu, Ivan G. Scheblykin, Yuxi Tian, Amir O. Yusuf, David K. Kariuki

Publikováno v: Synlett. 30:792-798

A systematic study of the photophysical and electrochemical properties of triscyclometalated homoleptic iridium(III) complexes based on 2-(1-naphthyl)pyridine (npy) ligands is presented. A systematic investigation of ligand substitution patterns show

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04f4400f798f3c671f5d8a1e0e0c8a75
https://doi.org/10.1055/s-0037-1611716

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Spectrophotmetric evaluation of rotenone extraction from leaves and seeds of mature Tephrosia vogelii plant

Autor: S. N. Njiru, David K. Kariuki

Publikováno v: African Journal of Pure and Applied Chemistry. 12:50-53

The percentage yield of rotenone extracted from Tephrosia vogelii leaves and seeds was investigated. Ten samples of well ground leaves and seeds were each subjected to extraction in soxhlet extraction system using trichloromethane, ethanol and methan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::882bd1bdb44c507e451b4315f4e8d9a6
https://doi.org/10.5897/ajpac2018.0760

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First comprehensive study on total contents and hot water extractable fraction of selected elements in 19 medicinal plants from various locations in Nyamira County, Kenya

Autor: Richard Mogwasi, Z. M. Getenga, Klaus Günther, Volker Nischwitz, Salim Zor, David K. Kariuki

Publikováno v: Journal of trace elements in medicine and biology 39, 54-61 (2017). doi:10.1016/j.jtemb.2016.08.001

A large number of medicinal plants is traditionally known in Kenya and used for treatment of various diseases, for example diabetes, where metals are supposed to be involved in pathogenesis and therapy. Therefore, detailed investigation of the concen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e1b223913bc1c3ea2477f66e3d09084
https://doi.org/10.1016/j.jtemb.2016.08.001

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Photocatalytic Degradation of 4-Chlorophenol by Titanium Dioxide: Role of Annealing Temperature and Morphology

Autor: David K. Kariuki, Patrick Kimutai Tum

Publikováno v: International Journal of Innovative Research and Development. 8

This work investigates the degradation rate of 4-cholorophenol using Titanium dioxide photocatalysts. Chlorophenols and their compounds are a nuisance as they are recalcitrant to degradation in the environment. Three morphologically different Titaniu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89cf9b8345ab099645868883afb5b722
https://doi.org/10.24940/ijird/2019/v8/i11/nov19078

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