We present the 53rd volume of the "International Journal of Engineering Research in Africa" to our readers. This volume contains the articles reflecting the research results in the fields of structural alloys, applied mechanics and mechanical engineering, assessment of the potential efficiency of use the cleaner electricity generation, materials and technologies in construction, biofuel production and chemical treatment of the industrial wastewater, remote sensing, and industrial engineering. The articles will be useful for many engineers as well as for academic teachers and students majoring in the mentioned fields of engineering science.

In this volume of journal "International Journal of Engineering Research in Africa" are collected articles which describe the results of engineering solutions of actual problems in mechanical engineering, materials processing technologies and chemical technologies, researching and designing of machines, in the designing of control systems for technological processes and engineering management of modern production. Published articles will be useful for professionals from field of mechanical engineering, chemical engineering, engineering management and for students and academic teachers of the related specialties.

The 64th volume of the journal represents the research results of mechanical properties and delamination mode of a carbon-fibre-reinforced polymer composite, experimental and numerical studies of viscoelastic behaviour of bituminous mixture with a high rate of reclaimed asphalt pavement, optimisation of energy consumption for a synthetic ammonia's production, modelling of heat processes in the systems that use solar energy and energy management in a related microgrid. There are articles devoted to image processing for automatic navigation technology in agricultural machines and the development of a hybrid artificial Intelligence-based system for supporting the eco-industrialisation of complex manufacturing processes. The volume will be helpful to specialists in machinery, construction, thermal engineering, usage of solar energy, renewable energetics and industrial automation.

The 44th volume of International Journal of Engineering Research in Africa contains articles describing the research results in the fields of materials science, mechanical engineering, applied and computational mechanics, construction materials and technologies, technological processes and materials in the petroleum production, natural resources exploration and environmental engineering, robotics, renewable energy, power engineering and control, production management. The articles will be useful for many engineers as well as for academic teachers and students majoring in these fields of engineering science.

This periodical edition includes peer-reviewed papers based on results of scientific research and engineering solutions in different areas of modern engineering science.

The 57th volume of "International Journal of Engineering Research in Africa" are included peer-reviewed manuscripts reflecting the research results in the fields of materials science, applied and fluid mechanics, power engineering and power management, ecology safety and agriculture, communication, road construction, building materials, and geotechnical engineering. The presented scientific articles can be appreciated by the majority of engineers, academic teachers, and students majoring in the fields of engineering science.

This new conference series aims at presenting state-of-the-art research in the development of offshore energy machines and devices. Topics covered include: Present and future offshore wind and wave devices; innovations in modelling, design, control, operation and testing of offshore energy machines, and the impact of these devices on the marine environment. Keywords: Oscillating Water Column, Monitoring of Wind Turbines, Coriolis Effect, Internal Ocean Waves, Rapid Distortion Theory, Modelling of Ocean Wave Energy Converters, Pendulum-Type Vibration, Wind Turbine Fault Prediction, Short-Term Wind Power Forecasting, Floating Tidal Energy Conversion, Antarctic Circumpolar Current, Shallow Water Large Scale Modelling.