1. Technological Sciences Area
2. UNIFRA
3. Santa Maria
4. Brazil
5. Federal University of Pampa
6. Unipampa
7. Chemistry Department
8. Federal University of Paraná
9. UFPR
10. Curitiba
11. Institute of Chemistry
12. Federal University of Rio Grande do Sul
13. UFRGS
14. Porto Alegre
15. Technology Development Center
16. Federal University of Pelotas
17. UFPEL
18. Pelotas