1. Postgraduate Programme in Materials Science and Engineering, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
2. Graduate Programme in Mining, Metallurgical and Materials Engineering, Federal University of Rio Grande Do Sul, Porto Alegre, Rio Grande Do Sul, Brazil
3. Engineering Centre, Federal University of Pelotas, Pelotas, Rio Grande Do Sul, Brazil
4. Department of Horticulture and Forestry, Federal University of Porto Alegre, Rio Grande Do Sul, Brazil