R. Maina
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Design and Analysis of a Miniaturized-Metamaterial-Based Monopole Antenna for Ultra-Wide Band Wireless Communication System Using Machine Learning Open
This research presents a miniaturized microstrip Ultra-Wideband (UWB) antenna based on double square ring Metamaterial (MTM) for modern wireless communication devices. The MTM unit cells are placed on the back of the antenna to help improv…
ASSESSMENT OF GROUNDWATER QUALITY NEAR HOSPITAL WASTE TREATMENT PLANT Open
The study conducted a comprehensive assessment of the quality of selected groundwater sources around the liquid waste treatment plant of Ahmadu University Teaching Hospital Shika, Nigeria. Water samples were collected from four (4) hand-du…
View article: Understanding the Ageing Performance of Alternative Dielectric Fluids
Understanding the Ageing Performance of Alternative Dielectric Fluids Open
Mineral oil has traditionally been used as a cooling fluid in power transformers, but its low biodegradability and low fire point have motivated the search of alternatives. In this work, six different dielectric fluids have been studied, i…
View article: Investigation of the Degradation of a Wood Pulp-Cotton Presspaper in Different Biodegradable Oils
Investigation of the Degradation of a Wood Pulp-Cotton Presspaper in Different Biodegradable Oils Open
New insulating materials, as biodegradable oils and upgraded paper, need to be investigated. In this paper, the ageing of a wood pulp - cotton presspaper is studied. Solid insulation is impregnated and aged with three different fluids: a m…
Simultaneous determination of five common additives in insulating mineral oils by high‐performance liquid chromatography with ultraviolet and coulometric detection Open
Dielectric mineral oils are used to impregnate power transformers and large electrical apparatus, acting as both liquid insulation and heat dissipation media. Antioxidants and passivators are frequently added to mineral oils to enhance oxi…