List of Articles Open Access Article Abstract Page Full-Text 1 - Optimization of energy consumption in methanol unit using pinch technology and modification of heat exchanger arrangement Payam Barzegar Amin Ahmadpour Hamid Kazemi Esfeh Mohammad Sharei S.M. Peyghambarzadeh Open Access Article Abstract Page Full-Text 2 - Analysis and simulation of temperature distribution on the roller body during the hot rolling process Amirheshmat Khedmati Bazkiaei Ali Sozangar Open Access Article Abstract Page Full-Text 3 - Power and weight optimization of spur gears using metaheuristics and finite element method Mohammad Sadeghi Ali Sadollah Open Access Article Abstract Page Full-Text 4 - Theoretical and Numerical Study of ultrasonic guided waves reflection from corrosion defect in the pipe Pezhman Taghipour Birgani Open Access Article Abstract Page Full-Text 5 - Analysis of strain and stress in composite layered plate using shear deformation theory and secant function Iman Najimi Saeed Jafari Mehrabadi Peyman Yousefi Open Access Article Abstract Page Full-Text 6 - Optimizing the cost of asphalt road pavement using particle swarm optimization algorithm (PSO) and compare it with the Shell method Mansour Tohidi Navid Khayat Abdoulrasoul Telvari