subjectTerm: III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS__enauthor: Ntziachristos, Leonidas_or_Patsourakos, Spyros_or_Nintos, Alexandros_or_Mousiopoulos, Nikolaos_or_Chasapis, Dimitrios