List of Articles Open Access Article Abstract Page Full-Text 1 - The methods of determining the mechanical modulus of the line, in order to optimally design railway lines and its role in minimizing the cost index and prioritizing railway development plans. علی نادران مرتضی نوروزی جبارعلی ذاکری کامران رحیم اف Open Access Article Abstract Page Full-Text 2 - Investigating the role of the air conditioning system in the architectural design of educational spaces, in promoting the learning of students and analyzing mutual solutions سارا طاهرسیما Open Access Article Abstract Page Full-Text 3 - Study of thermal conductivity and temperature distribution under different boundary conditions in composite reinforced with carbon nanotubes سید علیرضا موسوی شیرازی عزام اظم الشیبانی Open Access Article Abstract Page Full-Text 4 - Thermoelastic stability of functionally graded ceramic-metal cylindrical shells محمد مهدی نجف زاده B. اسدی A. H. نژادی پیام خزائی نژاد Open Access Article Abstract Page Full-Text 5 - Factors affecting the use of bacteria in the mechanical properties of self-healing concrete کیارش عبدالهی