1. NEW MACROCYCLES INCLUDING SPIRO-1,3-DIOXANE UNITS AS IONOPHORES FOR CATION SELECTIVE ELECTRODES. Authors: LILIANA OLENIC, GHEORGHE MIHĂILESCU, STELA PRUNEANU, ION GROSU, ELENA BOGDAN, LUMINIŢA DAVID, SIMINA DREVE.2. SYNTHESIS AND SPECTROSCOPIC INVESTIGATIONS OF NEW UO22+ POLYOXOMETALATE COMPLEXES. Authors: MARIANA RUSU, MIRCEA PUIA, SIMINA DREVE, OANA BABAN, DAN RUSU.3. IDENTIFICATION OF ALKALOIDS IN THE CLAVICEPS PURPUREA FUNGUS. Authors: SIMINA DREVE, IRINA KACSO, Z. MOLDOVAN, IOAN BRATU.