Prof. Mohammed El Hadi Attia is a professor at the Department of Physics, Faculty of Exact Sciences, El Oued University. Ranked first nationally during the forty-seventh session of the National University Committee for the promotion of Class A Lecturers to the rank of Professor of Higher Education. Prof. Mohammed El Hadi Attia, a research professor in the field of renewable energies, specializing in water desalination and drying agricultural crops… He has published more than seventy international papers in international journals of great influence. He also participated in more than forty international conferences, and contributed to the organization and success of many of them. He also supervises several doctoral students.