Inorganic Graphenylene: A Porous Two-Dimensional Material With Tunable Band Gap

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Arte e filosofia como disciplinas das multiplicidades: problema filosóficos e problemas estéticos em interferência intrínseca, segundo Deleuze

The most challenging Deleuze/Guattari’s lesson regar- ding art is that it is an autonomous way of thinking and bears of no lack relatively to philosophy and science. In fact, creating artistically is thinking. Throughout this article, I will try to show that art and philosophy are autonomous modes of thinking, as far as the statute of their creations is multiplicity. The multiplicity that characterizes philosophy is concept; the multiplicity that characterizes art is sen- sation. Both of them have their multiplicity character guaranteed by the instance of the problems, to which they are solutions. The most important is that the problems although independent constitute in- terference channels through which two modalities of meeting could happen. First, sensations point out how could a thinker endures in the instance of problems, avoiding both to deprive the concept and to fall in philosophical illusions. In second place in the instance of the problem philosophy and art exchange, so that either a thinker takes an art sensation and extracts from it its generating problem to be philosophically solved or, vice-versa, an artist takes a concept and solves its problem creating new art sensations.

Análise por computação gráfica das alterações produzidas em próteses totais superiores imersas diretamente em água e pela termociclagem

Objectives: This study aimed to assess dimensional changes in acrylic resin base and artificial teeth position after water storage and thermocycling using computer graphics measurements. Methods: Twenty-four waxed replicas were obtained from a previous upper complete denture. For linear measurements, points in cusps tips of left central incisor and second premolars and molars were marked in one of the prostheses with graphite and transferred to the others using an acrylic resin guide. The prostheses were scanned after waxing, polymerization and treatments and the images were exported to “AutoCad 2002 Today®” software for measurements. Results: There was no statistically significant difference in changes of each segment for each group and between the phases evaluated after polymerization and thermocycling. In groups I and III, the values after polymerization are higher than those after treatment, which suggests shrinkage while the prostheses in group II have expanded. Conclusion: The three groups exhibited artificial teeth movement after tests in comparison to the polymerized prosthesis. The prostheses submitted to water storage in kiln at 36ºC during seven days showed different behavior than the other groups.