List of Articles Open Access Article Abstract Page Full-Text 1 - Investigation of the Effect of Graphene-Silica Nanoparticles on Rheological and Thermo-physical Properties of Water-based Drilling Fluid Mohammad Gholamhosein zadeh Ashkan Ghafouri Open Access Article Abstract Page Full-Text 2 - Experimental investigation of cooling photovoltaic panels using phase change material at different angles maziar mirakhorlo Mehran Rajabi Zargarabadi mohammad sadegh valipour Open Access Article Abstract Page Full-Text 3 - Experimental study of the effect of silica nanoparticles on thermal and tribological properties of industrial lubricants Abbas Taghipoor Hasan Sabooei Open Access Article Abstract Page Full-Text 4 - Thermodynamic analysis of two dual-purpose compression refrigeration systems with eco-friendly refrigerants in different climates Alireza Zarabadi Mostafa Mafi Open Access Article Abstract Page Full-Text 5 - Performance prediction of a steam single-effect absorption chiller by the artificial neural network Farshad Panahizadeh Mahdi Hamzehei Mahmood Farzaneh-Gord Open Access Article Abstract Page Full-Text 6 - The Effect of Ferrule on Stress distribution in a Two-Rooted Maxillary First Premolar with Cast post and core; A Finite Element Study محمد شیشه ساز Reza Amirimoghadam Asadollah Ahmadzadeh