1. CHARACTERISATION OF OXIDIC MATERIALS WITH LUMINESCENT PROPERTIES. Authors: LAURA UNGUR, ELISABETH-JEANNE POPOVICI, MARIA VĂDAN, LIGIA PASCU, MARILENA VASILESCU, M. NAZAROV.2. SPECTROSCOPICAL INVESTIGATION OF SOME CALIX[N]ARENES DERIVATIVES UTILISABLE AS METAL EXTRACTING AGENTS. Authors: CRISTINA CIOCAN, ELISABETH-JEANNE POPOVICI, CRINA DAN, MARIA VĂDAN, R. GRECU, N. POPOVICI.