The Rubik's cube is one of the most popular puzzles in the world. It is estimated that one in seven people have already played with the cube. There are several ways to solve the cube problem and some people solve without a technique help, however, this is a laborious and tiring practice. The existing methods range from the simplest to the most complex, and it influences the time that will be spent in the solution. A robotic solution can implement one or more of these methods to solve the Rubik's cube in an automatic way. Considering this, this work proposes a low-cost micro controlled system to solve Rubik's cube. This prototype is intended to be used in classrooms for the teachinglearning process improvement, and consequently also improve the students' performance in disciplines of logic and algorithms.
Resumo: O polígono de Willis é uma estrutura arterial importante para a circulação cerebral, pois, além de distribuir o fluxo sanguíneo cerebral, provê passagens colaterais de sangue em casos de estenose e oclusão das artérias a jusante. Este estudo tem como objetivo simular a hemodinâmica do polígono de Willis e compará-la com os dados da literatura. Para isso, foram criados modelos em 3D em SOLIDWORKS 2017 e simulados em ANSYS FLUENT 15.0. Os dados das seções de saída foram extraídos e seções específicas foram analisadas. Comparando os modelos, notou-se que, em regime permanente, a estenose de 75% não tem impacto significativo sobre o fluxo sanguíneo cerebral. Além disso, a tensão de cisalhamento foi inferior a que causaria estenose em um polígono de Willis em ambos os modelos.
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