1. Department of Engineering and Geology
2. University G. d'Annunzio of Chieti-Pescara
3. 65127 Pescara
4. Italy
5. Microscopy Centre
6. University of L'Aquila
7. 67100 L'Aquila
8. Department of Philosophical, Educational and Economic Science
9. University G. d'Annunzio
10. 66100 Chieti Scalo