List of Articles Open Access Article Abstract Page Full-Text 1 - Numerical study on nanofluid natural convection in a vacuum tube solar collector with phase change materials seyed Alireza Nazem Iman Zahmatkesh Open Access Article Abstract Page Full-Text 2 - Investigating the use of TiO2 and TiO2 microparticles waterproofed with nanotechnology in epoxy paint composite coatings on X52 steel Amir Kazemi Ahmad Menshi Mehdi Boroujerdnia Open Access Article Abstract Page Full-Text 3 - Multivariate Analysis of Variance (MANOVA) and Multivariate Regression in Determining Thermal Conductivity of Nanofluid for Use in Mechanical Systems Mohammad Reza Ghalani Moslem Barzegari Ashkan Ghafouri Open Access Article Abstract Page Full-Text 4 - Construction and implementation of a cooling system to increase the efficiency of photovoltaic panels using the half pipe method Ali Sharafi Ebrahim Aghajari Alireza Tavakoli Open Access Article Abstract Page Full-Text 5 - Optimization of the shell and tube heat exchanger with perforated quatrefoil plate using the meta-heuristic algorithms seyed iman hashemi marghmaleki hadi eskandari Open Access Article Abstract Page Full-Text 6 - A review on the effects of combined stress cracking defects in steels Reza Navidnezhad Shahram Shahrooei Erfan mirshekari Pejman Taghipour birgani