1. ABOUT MESOPOROSITY CHARACTERISTICS OF IRON CONTAINING HYDROTALCITE-LIKE MATERIAL STUDIED BY USING N2 ADSORPTION METHOD. Authors: GABRIELA CARJA, NECULAI AELENEI, IGOR CREŢESCU, DOINA SIBIESCU, DANIEL MARECI.2. PRELIMINARY STUDY FOR DEGRADATION CHARACTERISTICS OF HYDROXYAPATITE COATINGS ON TITANIUM IN RINGER SOLUTION. Authors: DANIEL MARECI, NECULAI AELENEI, IGOR CREŢESCU.