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Vol. 22, Issue 1, March 2025
Vol. 22 No. 1 (2025)This issue (v22, i1, 2025) of the Nigerian Journal of Technological Development (NJTD) is highly enriched with contributions from a wide field of research covering engineering, technology, environmental sciences, and computational modelling. Many of the studies focus on materials science and sustainable energy solutions, with some of the articles exploring the preparation and characterisation of novel materials such as gold nanoparticle-based corrosion inhibitors, magnesium oxide-doped hydroxyapatite, and tensile-strengthened stainless-steel mesh. With respect to energy, this issue contains the optimisation of biodiesel production from waste sources, including how used vegetable oil and ram fat, demonstrate innovative approaches to renewable energy development. The studies on tribological analysis of recycled vegetable oil-based lubricants and process optimisation in food-based energy applications, such as dehulling African breadfruit seeds, further highlight the issue’s focus on sustainability. Additionally, this issue also discusses how computational and numerical analyses contribute to fields such as Couette-Poiseuille flow simulations, higher-order sliding mode control in power networks, and structural dynamics of Rayleigh beams.
This issue also features advancements in biomedical engineering, environmental monitoring, and artificial intelligence. The development of metamaterial-based biosensors and feature selection techniques for high-dimensional data analysis underscores the growing role of machine learning in medical and engineering applications. Research on efficient adsorption methods for wastewater treatment, flood hazard assessment, and ICT infrastructure development for Nigerian universities collectively reflect a commitment to environmental and technological progress. Meanwhile, mechanical engineering studies in wire-arc additive manufacturing, suspension system modelling, and investment casting design improvements contribute to industrial innovation. The integration of experimental research, computational methods, and real-world applications across these disciplines provides a valuable resource for academics, industry professionals, and policymakers striving to advance scientific and technological frontiers.
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Volume 21, Issue 4, December 2024
Vol. 21 No. 4 (2024)This issue presents a diverse advancement in technology, materials science, and sustainability. Some of the papers explore novel approaches to energy efficiency and optimisation, including a particle swarm-optimized adaptive PID controller for precise DC motor control and a protocol improving battery efficiency in LoRa-based wireless sensor networks. Another study focused on high-voltage crosslinked polyethylene cables which provide insights into partial discharge behaviour and predictive maintenance, while research on an Aluminium-Zinc alloy study highlights how process parameters like pouring height influence material properties. The issue also presents a study on robotics demonstrating how a Hector SLAM outperforms Gmapping in navigating slippery surfaces in order to achieve optimal performance in challenging environments. Sustainability and material innovations are also featured with some studies focusing on using CoNiFe coatings to enhance mild steel’s corrosion resistance and mechanical properties, while silver-doped ZnO nanoparticles were demonstrated for their potential in optoelectronics and environmental applications. You will also learn in this issue on how biodegradable food packaging film combines quaternized starch and polyvinyl alcohol for improved mechanical strength and water resistance. Furthermore, biodiesel production from waste ram fat utilised kaolinite clay and eggshell-derived catalyst to achieve high yields. These studies collectively address pressing global challenges in technology, energy, and environmental management.
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Volume 21, Issue 2, 2024
Vol. 21 No. 2 (2024) -
Volume 20, Issue 4, December 2023
Vol. 20 No. 4 (2023) -
Volume 20, Issue 3, September 2023
Vol. 20 No. 3 (2023) -
Volume 20, Issue 2, June 2023
Vol. 20 No. 2 (2023) -
Volume 20, Issue 1, March 2023
Vol. 20 No. 1 (2023)
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