Articles

Browse our published research articles

140 articles
81
Research Article

Production of uniformly disperse carbon nanotube/high density polyethylene nanocomposite using novel nanofeeder injection moulding machine

GADIMOH S.*, IBRAHIM H. D, Kolawole E. G., NKEONYE P.O, MUSTAPHA A.

Uniformly disperse single-walled carbon nanotube (SWCNT)/High density polyethylene (HDPE) nanocomposite has been produced using the developed nanofeeder injection mould machine. The dispersion state of SWCNTs in the HDPE matrix was evaluated by transmission electron microscope and Atomic force microscope images and confirmed with conductivity test. It was found that the dispersion state of SWC...

Jun, 2015 pp. 53-57
82
Research Article

Physical and Mechanical Properties of Filler Loading on Low- Density Polyethylene/Doum Fibre Composite

Abdulkadir S. A*, Wakala B, Okpanachi C B, Muktari S, Egere B.C, Yusuf L.O

This study investigates the physical and mechanical properties of low-density polyethylene (LDPE)/doum fibre composites with varying filler loadings. Six composite samples were fabricated using a metal mould of dimensions 120 × 120 × 3 mm, with LDPE and doum fibre mixed in ratios of 100:0, 90:10, 80:20, 70:30, 60:40, and 50:50. Processing was carried out at 120 °C for 5–10 minutes. The prepa...

Jun, 2024 pp. 54 - 60
83
Research Article

Modelling reliability of distribution network fault diagnostic tools using petri-nets

OKORIE P U*, ALIYU U O, JIMOH B, SANI S. M

The aim of the work presented in this paper is to evaluate and develop a framework for reliability analysis of distribution system modeling and simulation using Petri-Nets. The problem of detecting, isolating and restoring fault events in dynamic systems modeled is considered. As the complexity of power system increases, fault diagnosis become very difficult task therefore necessitate the devel...

Dec, 2014 pp. 54-59
84
Research Article

Gold Cyanidation and Characterization of Itagunmodi Gold Deposit using Cyanide from Cassava

Ogundare O. D.*, Adetunji A. R., Adeoye M. O.

This work has investigated gold cyanidation and characterization of Itagunmodi gold deposit using cyanide from cassava. The gold ore was subjected to selective removal of associated minerals, treated to varied concentrations of cyanide extracted from cassava and precipitation of the gold. The precipitated gold was characterized using optical microscope, SEM - EDX, EDXRF and XRFS. The result sh...

Dec, 2016 pp. 56-60
85
Research Article

Influence of Fibre Properties on the Absorption Behavior of Aqueous Solutions in Web Structures

ILIYA E. B*, Abdulraheem Giwa, Sunmonu O K

Ten cotton varieties indigenous to the region were evaluated for their physical characteristics under standardized conditions using established protocols. Parallel-laid, cross-laid, and random-laid fibre webs with defined weight and dimensions (specific mass) were prepared from raw (unscoured), scoured, and scoured-mercerized samples of each variety. The vertical plane capillary rise of a dye solu...

Jun, 2023 pp. 58-65
86
Research Article

Characterization of Some Selected Silica Sand Deposits in South West Nigeria for Sand Moulding in Foundry Industry

Omotajo Adewole Adeyemi*, Omotola Tobilola Emmanuel, Olawale J. Olawale, Isadare Dayo A, Adetunji A. R., Adekoya O., Adeyemo O.

This study determined the clay content, chemical composition, grain fineness number, distribution and shape of  some selected silica sand deposits in south west Nigeria. This is with a view to document the silica sand deposits in  Nigeria for sand moulding in the foundry industry. The silica sand deposits were collected from four river bed de posits in Igbokoda (Ondo State), Ote (Ogun State), Opa ...

Dec, 2021 pp. 58-69
87
Research Article

Synthesis of active methylene azo disperse dyes based on 4-Amino-3-Nitrobenzaldehyde as diazo component and their application on polyester and Nylon 6.6 fabric

SALISU A*, Bello K. A., Mohammed K. Yakubu

Active methylene azo disperse dyes were synthesized and characterized. A good percentage yield of each of the dyes were obtained in the range of 58-82 %. The dyes have well defined melting points in the range of 270 – 404 C. The visible absorption spectra of the dyes showed that the dyes absorbed maximally within the visible region of the electromagnetic spectrum. The results of halochromism o...

Jun, 2015 pp. 58-64
88
Research Article

Fuel properties of biodiesel from neem, cotton and jatropha binary and multi-blends with diese

Kaisan M. U.*, Anafi F. O., Umaru S., Kulla D. M., Nuszkowski J.

The physico-chemical properties of biodiesel are its specifications that define a set of quality standards. These properties include specific gravity, acid number, viscosity, cetane number, flashpoint, pour point, cloud point, cold filter flogging point, sulphated ash, carbon residue, sulphur content, copper strip corrosion and free fatty acid among others. This research presents the results of...

Jun, 2016 pp. 59-66
89
Research Article

Evaluation of the Effects of Weight Fraction on the Average Crystallite Size of ZnO Supported Bio-Waste Activated Carbon Composites

Onuoha David Chikaorama*, Egbe Evudiovo Apha Peter, Abdulrahman Asipita Salawu, Abdulkareem Ambali Saka

Metal nanoparticles are known to possess outstanding mechanical properties, relative to their bulk materials. However, due to large surface energy, nanoparticles tend to coalesce to each other, forming bulk particles and eventually deteriorate in quality. It is therefore, essential to immobilize nanoparticles on a support to help particles stay away from each other. This paper reports the effec...

Dec, 2020 pp. 60-67
90
Research Article

Electrical conduction and dielectric loss characteristics in natural ester dielectric fluid

ABDELMALIK A. A*

Alkyl ester derivatives of palm kernel oil have been prepared for use as bio-dielectrics in oil filled High Voltage (HV) electric equipment. Electrical conduction and loss characteristics of the ester derivatives were studied to understand the behaviour of the material under applied electric field. Frequency response analyzer was used to study electrical conduction within the fluids since diele...

Dec, 2014 pp. 60-67