1. The time evolution of the hard and soft acids and bases theory / Nazmul Islam and Dulal C. Ghosh -- 2. Magneto hydrodynamic effects on an atherosclerotic artery : a theoretical study / Ratan Kumar Bose -- 3. A fast solver for the backward heat conduction problem in unbounded domains / Rafael G. Campos and Adolfo Huet -- 4. Steganographic method for color images using variance field estimation and scaling factor for energy conservation / Blanca E. Carvajal-Gamez, Francisco J. Gallegos-Funes, and J. Lopez-Bonilla -- 5. Overview of quantum computation / Hernando Efrain Caicedo-Ortiz and Elizabeth Santiago-Cortes -- 6. Classical charged particles in arbitrary motion / J.H. Caltenco, J. Lopez-Bonilla, and Laurian Ioan Piscoran -- 7. Second-order linear differential equation in its exact form / A. Hernandez-Galeana and J.M. Rivera-Rebolledo -- 8. On the operator exp (2 (p + q)) / J. Morales, G. Ovando, R. Cruz-Santiago, and J. Lopez-Bonilla -- 9. Quantum computational studies on porphycene / Nazmul Islam -- 10. The evaluation of protonation energy of molecules in terms of quantum theoretical descriptors / Sandip Kumar Rajak and Dulal C. Ghosh -- 11. Analysis of casson fluid model for blood flow in externally applied magnetic field / Ratan Kumar Bose.