Articles

Browse our published research articles

147 articles
61
Research Article

Oil-water flows characteristics in pipes of different diameter

EDOMWONYI-OTU L C*, HERNANDEZ-BARRAL A, ANGELI P

The flow patterns during oil-water flows were investigated in two acrylic pipes that had different diameters, 38 mm ID and 14 mm ID respectively. Water (ρ = 1000 kgm-3, μ = 0.001 kgm-1s-1) and Exxsol D140 oil (ρ = 830 kgm-3, μ = 0.0055 kgm-1s-1) were used as test fluids, while the patterns were recorded with a high speed camera. Dispersed and rivulet flows were seen in the small pipe but not in...

Dec, 2014 pp. 35-40
62
Research Article

Physicochemical and Heavy Metals Analysis of Water from Different Sources in Usen, Edo State, Nigeria.

Maliki Muniratu*, Abel Inobeme, Kelani Tawakalit Omolara, Eziukwu Chinenye A.

The study investigated the physicochemical properties and heavy metal contents of water samples from three major  sources; river (sample A), borehole (sample B), and well (sample C), in Usen using standard procedures. The heavy metal  content was analyzed using Atomic Absorption Spectrometer. The results obtained were compared to permissible limits  based on WHO standard. The pH of the water sampl...

Jun, 2020 pp. 37-41
63
Research Article

The Re-Imagination of Electrochemical Power: A Global Awakening and Thoughts from Obafemi Awolowo University, Ile-Ife.

Aremo Bolaji*, Adeoye M. O., Obioh Imoh B, Okuwa Charles T, Oyinseye Shola I, Isadare Dayo A, Ayodeji Sodrudeen A, Abiodun Bukunmi J, Adeboye Odun A

From its humble beginnings as Alessandro Volta’s “voltaic pile”, electrochemical power (EP) has been power ing paradigm shifts in technology for the past 150 years. From the life-support systems in manned space explo ration of the 1960s, to the electric vehicles of the last 20 years, EP has been the unsung hero. EP is enjoying  renewed focus and a flurry of R&D activities in today’s resource-const...

Dec, 2021 pp. 39-51
64
Research Article

Application of response surface methodology in adsorption of lead ion from laboratory simulated wastewater using Eucalpytus tereticornis leaves

AMINU Z. I*, GALADIMA M.S, ISA M. T, AMEH A. O, SANNI M. I

This study is aimed at modeling of lead adsorption on Eucalyptus tereticornis (locally known as Turare) leaves from laboratory simulated wastewater through the application of response surface methodology (RSM). Batch studies were performed to evaluate the different parameters considered: contact time and adsorbent dosage. Central Composite Design (CCD) in Response Surface Methodology was emplo...

Jun, 2015 pp. 39-42
65
Research Article

Fabrication and Characterisation of Aluminium Alloy/Rice Husk Ash Composites for Lightweight Automobile Wheels

Adamu M. A*, Mijinyawa A. A, Hassan U, Okafor C. A, Abdullahi M. B

This study focuses on the development of an aluminium alloy composite reinforced with rice husk ash (RHA) for automobile wheel applications. Aluminium piston scrap was used as the base matrix, and RHA was introduced at 5%, 10%, and 15% weight fractions using the stir-casting method. The produced composites were subjected to hardness, tensile strength, impact energy, density, and wear tests to e...

Jun, 2025 pp. 40-49
66
Research Article

Evaluating the Effectiveness of Using Coconut Shell as Coarse Aggregate for Self-compacting Lightweight Concrete

Ogunsina Emmanuel Seun*, Ayeola Oluwafemi Michael, Morakinyo Abayomi Bright, Oluwaseun A. Adetayo

This study investigates the structural properties of concrete when coconut shell is used as a partial replacement for coarse aggregate. The objective is to evaluate the effect of this replacement on workability, compressive strength, and flexural strength of concrete. Mix designs were prepared by replacing conventional coarse aggregate with coconut shell at varying perce...

Jun, 2024 pp. 40-47
67
Research Article

Safety and Accident Prevention in the Textile Industry

ILIYA E. B*, Abdulraheem Giwa

This paper emphasizes the importance of safety in manufacturing and the various consequences of accidents in the textile industry. It explores different types of accidents in these environments, including slips, falls, and machine-related incidents. The impact of accidents extends beyond injured workers, affecting production, finances, and company reputation. The key to preventing accidents lies i...

Jun, 2023 pp. 40-45
68
Research Article

Extraction of atili (blackdate) oil from the pulp using aqueous biphase system

MAINA N. S*, OKOKO O. J

In this research, Atili (blackdate) oil (Canarium Schweinfurthii) was extracted from the pulp using aqueous biphasic system (ABS) prepared from fixed concentration (40%) of polyethylene glycol (PEG) and varying concentrations of salt (di-sodium hydrogen phosphate (Na2HPO4)) at 10%, 20%, 30%, 40% and 50% respectively. The partitioning of the atili oil to the PEG-rich phase for the various combin...

Dec, 2014 pp. 41-44
69
Research Article

Impedance and Modulus Spectroscopy of Nanocrystallite Barium Titanate Ceramic Using Mechanochemical Method.

Muazu Alhassan*, Ahmadu Umaru, Auwalu Inusa A, Zangina Tasiu, Nura Abdullahi, Maharaz M. Nasir

Nanocrystalline BaTiO (BT) powder was synthesized by a combination of the solid-state and mechanochemical  method. X-ray diffraction, field emission scanning electron microscopy, and impedance spectroscopy utilised  appropriately to characterize the BT sample (ceramic). The X-ray diffraction confirmed a single-phase perovskite  compound of cubic symmetry with space group Pm-3m. The crystallite siz...

Jun, 2020 pp. 42-50
70
Research Article

The effects of hybridization on the mechanical properties of bagasse/sisal/coir hybrid fibre-reinforced epoxy composite

Ogabi R. T.*, Dauda B. M., Lawal A. S., GADIMOH S., Abdulrahim M., Oladiran S.

Biomass fibres obtained from agricultural wastes have found application in the production of structural reinforcement for bio-composites used for manufacturing engineering components because of their low cost, biodegradable and eco-friendly advantages. The effects of hybridization on the mechanical properties of bagasse/sisal/coir reinforced epoxy hybrid composites have been studied. Bagasse ha...

Jun, 2016 pp. 42-50