List of Articles biological activity Open Access Article Abstract Page Full-Text 1 - Electronic Structure, Biological Activity, Natural Bonding Orbital (NBO) and Non-Linear Optical Properties (NLO) of Poly-Functions Thiazolo [3,2-a]Pyridine Derivatives. DFT Approach Shimaa Hussien hussien moustafa Open Access Article Abstract Page Full-Text 2 - TD-DFT Calculations, Electronic Structure, Biological Activity, NBO, NLO Analysis and Electronic Absorption Spectra of Some 3-Formylchromone Derivatives Shimaa Hussien hussien moustafa Nabil H. Amin Magdy A. Ibrahima ELShimaa Ibrahima