1. NO2 DISPERSION PROCESS SIMULATION IN URBAN AREAS BY ANALITICAL-EXPERIMENTAL METHODS. Authors: DELIA PERJU, GABRIELA-ALINA DUMITREL, GHEORGHIŢA JINESCU, HARIETA PÎRLEA, DANA SILAGHI-PERJU.2. WATER ACTIVITY – INDICATOR OF FOOD SAFETY AND THE FACTORS THAT INFLUENCE THE BIOCHEMICAL STABILITY OF SOFT DRINKS. Authors: MIREL GLEVITZKY, DELIA PERJU, GABRIELA-ALINA DUMITREL, MARIA POPA, MIHAELA LAURA VICĂ.3. THE STUDY OF THE RHEOLOGICAL BEHAVIOR AND THE OXIDATION STABILITY OF SOME COSMETIC EMULSIONS. Authors: ADELA MANEA, ANDRA TAMAȘ, SABINA NIȚU, DELIA PERJU.