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.

We are glad to present our readers with the 40th volume of International Journal of Engineering Research in Africa. This volume contains articles describing the research results in the fields of materials science, mechanical engineering, power distribution and power control, construction materials and technologies, technological processes in the wastewater treatment and industrial engineering. The articles will be useful for many engineers as well as for academic teachers and students majoring in these fields of engineering science.

This journal volume is available electronically and in print. The online version is available online at http://www.scientific.net/jera

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

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