Professor of Environmental Toxicology, Research Director and Deputy Director at the Environmental Research Center (CRE)
Professor of Comparative Anatomy and Cytology. Biology department, University of Naples Federico II. Chair of Interdepartmental Research center for Environnement, IRCEnv (C.I.R.A.M).
Professor of occupational medicine and environmental health at KU Leuven (Belgium), he is also affiliated with IDEWE, the Belgian external service for prevention and protection at work
Professor affiliated with the Lebanese American University (LAU). Director - International Environmental Services- Sydney- Australia (IESS)
Professor of Biochemistry, Active Biomolecule Sciences. Higher Institute of Applied Biology Medenine – University of Gabes Director of the research Laboratory BMA "Biodiversity, Molecules, Application"
University hospital professor and head of the toxicology department and the anti-poison center at the IBN Sina university hospital center, Annaba (Algeria).
Professor and director of the laboratory of Experimental Biotoxicology, Biodepollution and Phytoremediation (BTEBDPR) at the university ORAN 1 Ahmed Ben Bella - Algeria.
Professor Emeritus and Chairman of the Scientific Council of the Faculty of Sciences, Department of Biology, Badji Mokhtar-Annaba University. Laboratory of Ecobiology of Marine and Coastal Environments..
Professor of Immunology, Director of the Applied Molecular Biology and Immunology Laboratory at Abou Bekr Belkaid University, Tlemcen (Algeria)