issue 4 publication date 2021-03

• Evaluation of silica nanoparticles cytotoxicity (20-40 nm) on cancerous epithelial cell (A549) and fibroblasts cells of human normal lung fibroblast (MRC5)
• Influence of environmental conditions on the earth pit resistance using earth pit simulator
• Investigating shift work disorder among workers of Hamadan Glass Factory in 2017
• Assessment of safety climate status in personnel of Naeen Tile Industries Company in 2019
• Evaluation of the validity and reliability of the Persian version of the Eurocest Neurotoxic Symptoms Questionnaire
• Relationship between workplace ergonomics and musculoskeletal pain, range of motion and spinal deformities in employees: A case study, Kermanshah Oil Refinery
• A review of covid-19 disesse and Occupational Considerations