1. MOLECULAR MASS EFFECT ON RHEOLOGICAL BEHAVIOR OF SOME AQUEOUS POLY (ETHILENE OXIDE) GELS. Authors: C.V. POP, L. UDRESCU, E. DINTE, M. TODICA.2. OBSERVATION OF THE EFFECTS OF UV EXPOSURE OF SOME PVA MEMBRANES. Authors: L. UDRESCU, C.V. POP, M. TODICA.3. UV VIS BEHAVIOR OF DOPED PVA TiO2 MEMBRANES UNDER GAMMA IRRADIATION. Authors: M. TODICA, C.V. POP, E. DINTE, L. UDRESCU.