1. THE INFLUENCE OF THE HEAT TREATMENT ON THE PHOTOACTIVITY OF THE TIO2-SIO2 AEROGELS. Authors: A. PETER, IONEL CĂTĂLIN POPESCU, E. INDREA, P. MARGINEAN, V. DANCIU.2. PHOTOCATALYTIC ACTIVITY OF METAL DOPED TIO2 AEROGELS PREPARED BY SOL-GEL PROCESS. Authors: M. POPA, IONEL CĂTĂLIN POPESCU, V. DANCIU.3. SYNTHESIS AND MORPHO-STRUCTURAL ANALYSIS OF TIO2-AU COMPOSITES. Authors: G. MELINTE, L. BAIA, V. DANCIU, M. BAIA.4. ANNEALING INDUCED TEXTURAL PARTICULARITIES ON TIO2-Au NANOCOMPOSITES. Authors: L. BAIA, V. DANCIU, M. BAIA, G. MELINTE.5. THE EFFECT OF ALKALI AND SURFACTANT CONCENTRATION, TEMPERATURE AND STIRRING ON THE CLEANING EFFICIENCY OF THE CARBON STEEL SURFACE. Authors: L. BAIA, K. MAGYARI, LIVIU COSMIN COTET, SEPTIMIU CASSIAN TRIPON, M.V. RACOLȚA-PAINA, ISTVAN-ATTILA SZÉKELY, C.A. SALAGEAN, V. DANCIU, ALIN GRIG MIHIS.