1. Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemicals Institute (IPPI), Tehran, Iran;
2. Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), Tehran, Iran;
3. Department of Science, Iran Polymer and Petrochemical Institute (IPPI), Tehran, Iran;
4. Department of Medical Radiation Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran;
5. Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran