International Conference of Agricultural Engineering XXXVII Congresso Brasileiro de Engenharia Agrícola ASABE ILES VIII Iguassu Falls City – Brazil – August 31 to September 04, 2008 Paper title (Include here your sponsor logo or the logo of the research instituition) (Include here your institution logo) Authors and institutions ABSTRACT INTRODUCTION RESULTS AND DISCUSSION (Compare your results and the available date) (Describe the purpose of the paper and it´s importance into the theme and for the objectives of the event) METHODOLOGY (Describe the area of study and the used methodology) CONCLUSION (Compare your results with the stablished objectives) REFERENCES ACKNOWLEGEMENTS