1. MORPHO-TEXTURAL AND FLUORESCENCE STUDIES ON SIO2 AND SIO2@Ce3+. Authors: ELENA-MIRELA PICIORUȘ, CĂTĂLIN IANĂȘI, ROXANA NICOLA, PAULA SFÎRLOAGĂ, PAULA SVERA, ANA-MARIA PUTZ.2. POROUS SILICAS FROM MIXTURES OF Na2Si3O7 AQUEOUS SOLUTION AND TEOS. INFLUENCE OF SODIUM SILICATE AMOUNT. Authors: ELENA-MIRELA PICIORUȘ, PAULA SVERA (IANASI), CATALIN IANASI.