Search
Now showing items 1-10 of 14
Influence of Localized Surface Plasmon Polaritons on Silver Nanoparticles
(ABC Journal of Advanced Research, 2020)
In this article, we present a theoretical study on localized surface Plasmon of spherical Ag nanoparticles (NPs) done by numerical simulation. A plane EM wave was used to determine absorption cross-section and results ...
Assessment of Levels of Natural Radioactivity in Sand Samples Collected from Ekalakala in Machakos County, Kenya
(Hindawi, 2020)
Construction sand is naturally polluted with radionuclides of terrestrial origin. In this study, specific activities of 238U, 232+, and
40K in 30 sand samples collected along the Ekalakala River, Machakos County, Kenya, ...
Excitation of the Lowest Autoionizing Level of Caesium Atoms by Positron Impact
(African Journal of Pure & Applied science (AJPAS), 2021)
We have obtained differential and integral cross sections for the excitation of caesium atom to the lowest autoionizing level by positron impact using the distorted wave approximation. We have also done calculations for ...
Measurement of Radon Activity Concentration in Underground Water of Bureti Sub-County of Kericho County Kenya
(Oxford Academic, 2020)
The activity concentration of radon in underground water of Bureti sub-county was measured using liquid scintillating counter device. The average radon activity concentration in all the water samples was 12.41 Bql−1. The ...
Environmental Assessment of Heavy Metal Pollutants in Soils and Water from Ortum, Kenya
(Springer, 2020)
Analysis of elemental concentration in soil and water was carried out in Ortum to ensure safe utilization of soil and water resources for agriculture, industrial, and household purposes. Elemental analysis of soil and water ...
Optical Characterization of Photocatalytic Copper Doped Thin Films of Anodized Titanium
(IOP Publishing, 2020)
Titanium oxide is used in a myriad of applications such as in capacitors, insulation paints among
others. It is a prime candidate for water splitting due to its photocatalytic properties. In this work,
undoped TiO2 thin ...
Cancer and Non-Cancer Health Risks from Carcinogenic Heavy Metal Exposures in Underground Water from Kilimambogo, Kenya
(Elsevier, 2020)
Water is very crucial for man, animals and plants because of its health implications in case it is polluted. Water has many uses like drinking for man and animals, domestic use and for agricultural use. The concentration ...
Opto-Electrical Properties of Chemical Bath Deposited Cu4SnS4 Thin Films
(International Journal of Thin Film Science and Technology, 2021)
: Thin films could be explained as a very thin layer of a substance deposited onto various substrates. Nowadays, a variety of
binary, ternary, quaternary and pent nary films have been produced by using different deposition ...
Effects of zinc oxide nanostructures on performance of natural dye sensitized solar cells
(Kenyatta University, 2022-06)
Dye Sensitized Solar Cell (DSSC) is a very promising development in photovoltaic technology. In DSSCs, dye molecules provide the charges, while a semiconductor collects and transports the charge. The performance of DSSCs ...
Positron impact elastic scattering by calcium atom using first order distorted wave born approximation with a complex potential
(Kenyatta University, 2022-06)
Precise positron scattering cross section data are essential for the development of a wide range of technological fields such as astrophysics, plasma sciences, material sciences and bio-medicine. Thus, lack of complete ...