We present for our readers the 33rd volume of the International Journal of Engineering Research in Africa which contains articles describing the results of engineering research and solutions in the fields of the applied mechanics, research of materials and processing technologies in the mechanical engineering, construction materials and technologies, equipment design, power electronics, power distribution, technological processes in the chemical 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.

"We present for our readers the 33rd volume of the International Journal of Engineering Research in Africa which contains articles describing the results of engineering research and solutions in the fields of the applied mechanics, research of materials and processing technologies in the mechanical engineering, construction materials and technologies, equipment design, power electronics, power distribution, technological processes in the chemical 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."

We present to our readers the 38th volume of the International Journal of Engineering Research in Africa which contains scientific articles describing the results of engineering research and solutions in the fields of materials and processing technologies in the mechanical engineering, construction and chemical technologies, ergonomics, environmental engineering and engineering management. The articles will be useful for the professionals concerned with mechanical engineering, materials science, chemical engineering, engineering management as well as for academic teachers and students majoring in these fields of engineering science.

We are glad to provide our readers with the 43rd 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 and control, communication and power supply in communication, construction materials and technologies, water treatment and biodiesel production, 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.

The 71st volume of the journal is dedicated to recent achievements in engineering practice and scientific research results in a wide range of industrial branches. The transport mechanism in the diffusion layer in proton exchange membrane fuel cell, mechanical characteristics and performance of various green building materials, predictive control for biomass boiler and automatic generation control in power system, and also analysis of efficient resource allocation in cloud computing are the topics of this issue. This journal's volume will be helpful to many engineers in the modern production sector and construction.

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

This volume reflects on the recent political developments in Zimbabwe and their current and future impact on the agrarian sector. Utilising new empirical data gathered across Zimbabwe, the contributors shed light on the liberalisation of agricultural policy after Mugabe. Chapters examine how the adoption of neo-liberal orthodoxy in agrarian policy making will affect the new agrarian structure, looking at issues such as productivity, the impact on vulnerable groups, changing land tenure arrangements, joint ventures and land grabbing. Providing a new way of conceptualising Zimbabwe’s agrarian futures, this book will be of interest to researchers, NGOs and policymakers interested in the politics of land and agriculture in Zimbabwe and southern Africa.