List of Articles Shielding tensor Open Access Article Abstract Page Full-Text 1 - An Ab initio Investigation of Pyrene Electronic Structure M. Monajjemi R. Zhiani H. H. Haeri F. Mollaamin Open Access Article Abstract Page Full-Text 2 - An Ab initio and chemical shielding tensors calculations for Nucleotide 5’-Monophosphates in the Gas phase M. Monajemi M.A Seyed Sajjadi R. Sayyadi G. Ghassemi Open Access Article Abstract Page Full-Text 3 - Ab Initio Quantum Chemical Studies of 15N and 13C NMR Shielding Tensors in Serine and Complexes of Serine- nH2O: Investigation on Strength of the CαH…O Hydrogen bonding in the Amino Acid Residue. M. Monajjemi T. Karimkeshteh F. Mollaamin Open Access Article Abstract Page Full-Text 4 - An ab initio study of metalated CMP,UMP& dTMP at HF level:Bond energies and isotropic NMR shielding of atoms M.A Seyed Sajjadi R. Sayadi G. Ghasem KH. Kalateh