List of Articles Open Access Article Abstract Page Full-Text 1 - The Electrical Conductivity of charge carriers in Gallium Arsenide semiconductor doped with Cr and Co used in solar cell and optical fiber detectors hassan khaleghi Open Access Article Abstract Page Full-Text 2 - Numerical investigation of energy absorption semi apical angel in conical grooved tubes under dynamic axial load and comparing quasi-static and dynamic loading Nima Asadi Dehmirahmadi Mohammad Javad Rezvani Open Access Article Abstract Page Full-Text 3 - Experimental and numerical analysis of the impact of the size and location of Trombe wall dampers by phase-change material Abdollah Khalesi Doost mohammad amin khani ahad Abedini Esfahlani Open Access Article Abstract Page Full-Text 4 - Casimir Energy Calculation for Scalar Field on a Spherical Surface with S^3 Topology Madad Ali Valuyan Open Access Article Abstract Page Full-Text 5 - Thermodynamic analysis and optimization of the power piston Stirling engine beta can be used to increase the output power and efficiency سید بهمن حسین زاده ساداتی Hadi Kargar Sharifabad نادر رهبر Open Access Article Abstract Page Full-Text 6 - Behavior and mechanical properties of shape memory alloys in smart materials and its application in various industries Mahdi Rezvani Tavakol