List of Articles Open Access Article Abstract Page Full-Text 1 - Free Vibration of Functionally Graded Cylindrical Shells Based on the First Order Shear Deformation Theory Open Access Article Abstract Page Full-Text 2 - Development of numerical solution of radiant catalytic heater and comparison with laboratory sample حسین افشار سعید اقامحمد نظری Open Access Article Abstract Page Full-Text 3 - Influence of N2/Ar flow ratio on the structural, mechanical properties and corrosion behavior of TaN films مهدی منوچهریان Open Access Article Abstract Page Full-Text 4 - An optimization model for prioritizing railway development plans, based on effective indicators and based on sustainable development, taking into account economic, environmental and mechanical aspects. علی نادران مرتضی نوروزی جبارعلی ذاکری کامران رحیم اف Open Access Article Abstract Page Full-Text 5 - Magnetic Hydrodynamic Flow of nanofluid in a square cavity جلیل جمالی Basim Jaber Jwode Alssaray Open Access Article Abstract Page Full-Text 6 - The flexibility of architectural design in schools, with a comparative study of traditional to contemporary schools in the effect of the environment, mechanical installations and air conditioning, in increasing learning, and improving skills (Case studies: Maravi, Dar al-Funun and Alborz schools) سارا طاهرسیما