1. Department of Materials Science and Engineering, Izmir Institute of Technology, Izmir 35430 Turkey
2. Course of Chemical Engineering, University of Ribeirão Preto (UNAERP), 14096-900 Ribeirão Preto, São Paulo, Brazil
3. Embrapa Agricultural Instrumentation, P.O. Box 741, 13560-970 São Carlos, São Paulo, Brazil
4. Dipartimento di Ingegneria Industriale, Università di Trento, Via Sommarive 9, 38123 Trento, Italy