Institution: | 1.Polymer Group, Faculty of Technical and Engineering, Golestan University, P.O. Box 155, Gorgan, Golestan, Iran ;2.Caspian Faculty of Engineering, College of Engineering, University of Tehran, P.O. Box 43841-119, Guilan, Rezvanshar, Iran ;3.Department of Biology, Golestan University, Shahid Beheshti Ave, Gorgan, Iran ; |