1. Laboratory of Applied Mechanics, Department of Naval Science, Hellenic Naval Academy, 185 39 Piraeus, Greece
2. School of Civil Engineering, National Technical University of Athens, Zografou Campus, 9 Iroon Polytechniou str, 157 72 Athens, Greece
3. Piraeus Chemical Service, General Chemical State Laboratory, Independent Authority for Public Revenue, 185 45 Piraeus, Greece
4. Fuels and Lubricants Laboratory, Department of Naval Science, Hellenic Naval Academy, End of Hadjikyriakou Avenue, 185 39 Piraeus, Greece