List of Articles Interaction energy Open Access Article Abstract Page Full-Text 1 - Estimating the second virial coefficients of some real gas mixtures and related thermodynamic views M. Baghernejad K. Zare Open Access Article Abstract Page Full-Text 2 - A Density Functional Approach toward Structural Features and Properties of C20 and its Complexes with C2X4, C2X2 (X = H, F, Cl, Br) for Synthesis Application Reza Ghiasi Farideh Hadi Amir Hossien Hakimyuon Open Access Article Abstract Page Full-Text 3 - Theoretical investigations on the interactions of some drug fragments with guanine and adenine nucleic acid: DFT method, AIM analysis and NBO calculations Hossein Azizi Toupkanloo Zoha Rahmani