for the scholarship provided; I would like to express my special thanks to my supervisor, Prof. Jorge Tenório, and co-supervisor, Prof. Denise Espinosa, for their kind guidance and support throughout the PhD's program. All of their words lead me to learn a lot about how to be a professor, a researcher, a professional, and human;To my first children in academia, Iara Anes, José Helber Vinco, Lívia Martins and Lucas Guimarães for all learning and for letting me be a part of your careers;To my children of LAREX-Tupy project,