1. RHEOLOGICAL BEHAVIOUR OF TITANIA SYSTEMS DURING THE SOL-GEL TRANSITION. Authors: ADINA GHIRIȘAN, VIRGINIA DANCIU, VERONICA COŞOVEANU, MIHAELA POPA.2. INVESTIGATION OF THE EFFECTS OF DEGRADATION OF HIGH DENSITY POLYETHYLENE BY 13C NMR SPECTROSCOPY AND 1H RELAXOMETRY. Authors: MIHAI TODICA, ANNE BAUDOUINE, RADU FECHETE, MIHAELA POPA, DUMITRIȚA MOLDOVAN.3. 13C NMR STUDY OF GAMMA IRRADIATED POLYSTYRENE. Authors: RADU FECHETE, LIVIU DĂRĂBAN, TRAIAN ŞTEFAN, MIHAELA POPA.4. THERMAL DECOMPOSITION AND KINETICS OF THE PRECURSORS FOR OBTAINING ZnO AND TEAH MODIFIED ZnO NANOPOWDERS. Authors: MIHAELA POPA, AMALIA MESAROS.