List of Articles Open Access Article Abstract Page Full-Text 1 - An Investigation on the Efficiency of SBR In Different Operation Conditions Afshin Takdastan Naser Mehrdadi Ali Torabian Open Access Article Abstract Page Full-Text 2 - Investigating the Performance of Biological Treatment of Textile of Wastewater by a Moving Bed Bio-Reactor (MBBR) Mehdi Borghei Amir Hesam Hasani Roya Sharifi Open Access Article Abstract Page Full-Text 3 - Investigation on the Effect of Various Parameters on Optimum Performance of Engine Management System (EMS) based on DoE Method Farideh Atabi Mostafa Khezri Hamid Irani Open Access Article Abstract Page Full-Text 4 - Bio-Absorption of Lead by Isolated Bacteria from Petrochemical Waste water Bita Karim Salmani Mohammad Ali Amozegar Javad Hamedi Open Access Article Abstract Page Full-Text 5 - Investigation on quality of water of jajrood and karaj rivers for recreation uses Ali Torabian Amir hessam Hassani Samira Izad panah Open Access Article Abstract Page Full-Text 6 - Investigation on Social Benefits of Substitution of Gasoline with CNG in Tehrans Taxis Zahra Abedi Farideh Atabi Mohammad Soofi Open Access Article Abstract Page Full-Text 7 - Recognition of Geographical diffusion of Stomach Cancer in Gilan province Bahman Ramezani Gourabi Azam Hanifi Open Access Article Abstract Page Full-Text 8 - The Impression of Nature & Environment on Iranian Music Hamid Majedi Shabnam Shamlou-Kia