List of Articles Risk index Open Access Article Abstract Page Full-Text 1 - Contamination Evaluation, Health and Ecological risk index assessment of Potential Toxic Elements in the surface soils Case Study: Central Part of Bandar Abbas County Tahereh Moghtaderi SHAHLA MAHMOUDI ata shakeri mohamadhassan masihabadi Open Access Article Abstract Page Full-Text 2 - Environmental and Sanitary Risk Assessment of the waste water treatment plant in west of Ahwaz Using AHP and TOPSIS methods hamidreza pourkhabbaz azin azizi saeide javanmardi Ali Reza Pourkhabbaz 10.22034/jest.2021.29334.3793 Open Access Article Abstract Page Full-Text 3 - The test of the Fama-MacBeth model to measure the relationship between the expected investment risk metrics and the expected rate of return for knowledge-based companies active in the Tehran Stock Exchange Shabnam Shayestehfar Open Access Article Abstract Page Full-Text 4 - The Impact of Country Risks Index on Commercial Insurance Demand (Case Study: MENA Countries) Ali Dehghani Niloufar Sheikh Rezaie