Book excerpt: We present to our readers the 36th volume of the International Journal of Engineering Research in Africa. This volume contains articles describing the results of engineering research and technical solutions in the fields of the applied mechanics, research of materials and processing technologies in the mechanical engineering, construction materials, optimization of reactive power dispatch, technological processes in the chemical and food production, environmental engineering and engineering management. The articles will be useful for the professionals concerned with mechanical engineering, materials science, chemical engineering, power production and engineering management as well as for academic teachers and students majoring in these fields of engineering science.