Dr. Hamid R. Naji started his career as a lecturer at Ilam University in 1999. In early 2013, he was graduated at Ph.D. level from Universiti Putra Malaysia. From the first day of 2015 up to now is working at the Department of Forest Sciences, Ilam University, Iran as a senior lecturer. His research interests are tree biology especially the effects of biotic and abiotic stresses on cellular structures.