| PHYSICS | | |
| Hazem Ali Attia | Unsteady Couette flow with heat transfer of a viscoelastic fluid considering the Hall Effect | 5 |
| Hazem Ali Attia | Effect of temperature dependent viscosity and thermal conductivity on the unsteady MHD Couette-Poiseulle flow Table | 23 |
Vladimir Ristić Mirko Radulović Jasna Stevanović | Transition rates dependence on the turning point | 31 |
Nebojša Danilović Vladimir Ristić Vladimir Cvjetković Vera Gal Mirjana Platiša Zorica Nestorović | Spectral analysis of heart rate variability in acromegaly | 39 |
CHEMISTRY | | |
J. G. Ayenimo C. E. Adeeyinwo I. A. Amoo | Heavy metal pollutants in Warri River, Nigeria | 43 |
Pablo R. Duchowicz Eduardo A. Castro | Comparison between two different approaches toward atomic radii | 51 |
| Ivan Gutman | What chemists could not see without mathematics - dependence of total π-electron energy on molecular structure | 57 |
Harishchandra S. Ramane Ivan Gutman Hanumappa B. Walikar Sabeena B. Halkarni | Equienergetic complement graphs | 67 |
Lionello Pogliani Douglas J. Klein Alexandru T. Balaban | The intriguing human preference for a ternary patterned reality | 75 |
BIOLOGY | | |
Rachel Waema Olorunsola E. Olowofeso | Mathematical modeling for human Immunodeficiency virus (HIV) transmission using generating function approach | 115 |
Nevena Đukić Gordana Matić Radomir Konjević | Biohemical analysis of gliadins of wheat Triticum диrит | 131 |
Danica Mićanović Desimir Knežević Veselinka Zečević | The effect of diazotrophs on grain yield of spring wheat | 139 |
Veselinka Zečević Desimir Knežević Danica Mićanović Biljana Dimitrijević | The investigation of some quality parameters of wheat grain in different maturity stages | 143 |
Snežana Pavlović Dragana Pavlović Marina Topuzović | Comparative analysis of heavy metal content in aquatic macrophytes in the reservoirs Gruža, Bubanj and Memorial Park | 147 |
Aleksandar M. Ostojić Vladica Simić | Contribution to knowledge of zooplankton in the rivers of Serbia: Summer aspect of Rotatoria in Morava and Western Morava | 157 |
| Bela F. Blesić | Further contribution to the knowledge of Protura on mountain Rudnik, Serbia | 163 |
Snežana Pešić Dragana Mladićević Katarina Živković | Weevils (Curculionoidea) in the Center for Small Grains Kragujevac collection | 167 |