187 resultados para Resistências adesivas
em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"
Resumo:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Resumo:
O artigo trabalha a noção de amizade em Foucault como um modo de vida que se opõe ao processo de normalização empreendido pelo biopoder. Inicia com uma caracterização acerca do Estado Moderno. Logo após, aborda a historicidade dos processos de subjetivação e de como a atitude frente a estes implica estados de maior autonomia ou sujeição. em seguida, aborda a amizade como resistência à normalização, situando-a em relação ao prazer e à sexualidade. Por fim, discute o papel da filosofia no processo de constituição da amizade, particularmente quanto à possibilidade de pensá-la por meio de uma teoria das relações.
Resumo:
Materiais restauradores que liberam íons flúor e/ou promovem adesão à estrutura dental têm sido relacionados com a inibição do desenvolvimento de lesões de cárie adjacentes às restaurações. A hipótese testada neste estudo foi a de que o uso de resina composta/sistema adesivo tem efeito cariostático semelhante a um material adesivo que libera íons flúor - cimento de ionômero de vidro - sobre a superfície radicular adjacente às restaurações. Foram utilizadas 20 raízes de terceiros molares humanos extraídos, embutidas em resina de poliestireno e planificadas. Cavidades padronizadas foram preparadas e restauradas aleatoriamente com (a) Chelon-Fil (Espe) ou (b) Z100/SingleBond (3M). Valores iniciais (KHNi) de microdureza superficial Knoop da dentina foram obtidos a 100, 200 e 300 mim da margem oclusal das restaurações. Uma área de 2,0 mm ao redor da restauração foi delimitada e submetida à indução de cárie artificial. Obtiveram-se, então, os valores finais (KHNf) de microdureza, nas mesmas condições e localizações da leitura inicial. As diferenças entre KHNi e KHNf foram consideradas para a análise estatística. As medianas de KHNi - KHNf nas distâncias de 100, 200 e 300 mim foram para (a): -3,8; -0,3; -1,0; e para (b): 3,3; 2,5; 1,7. O teste de Kruskal-Wallis não evidenciou diferença significativa entre as distâncias dentro de cada grupo. Às distâncias de 200 e 300 mim, não houve diferença significativa entre os materiais avaliados. À distância de 100 mim, (a) diferiu significativamente de (b) (p < 0,05). Sob as condições deste estudo, o cimento de ionômero de vidro apresentou maior potencial cariostático que a resina composta com sistema adesivo dentinário.
Resumo:
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Resumo:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Resumo:
Studies using bio(muco)adhesive drug delivery systems have recently gained great interest, which can promote drug targeting and more specific contact of the drug delivery system with the various absorptive membranes of the body. This technological platform associated with nanotechnology offers potential for controlling drug delivery; therefore, they are excellent strategies to increase the bioavailability of drugs. The objective of this work was to study nanotechnology-based polymeric bio(muco)adhesive platforms for controlling drug delivery, highlighting their properties, how the bio(muco)adhesion can be measured and their potential applications for different routes of administration.
Resumo:
Pós-graduação em Odontologia Restauradora - ICT
Resumo:
The connections in the wood structures are the places with high concentrations of stresses and therefore are more fragile than the rest of the structure. The connections between pieces of wood can be made by metal pins (nails or screws). The compression and embedment strength has significant influence on the calculation of the connections. The main aim of this work was to evaluate the compression and embedment strength in the directions parallel, inclined at 45° and normal to the grain, using standard specimens according to ABNT NBR 7190/1997 standard. The compression and embedment strength were initially evaluated according to ABNT NBR 7190/1997, which admits the deformation of 2‰ as limit of embedment and the ratio between the ultimate strength and the area of application of load in the specimen for the compressive strength. Afterward, the embedment strength was evaluated by the EUROCEDE 5 /1995 European standard, which use the limit of 5 mm of the displacement for the embedment. Specimens of Pinus oocarpa, Cumaru and Pinus taeda were used in tests to calibration of equipment and specimens of Pinus taeda and Eucalipto citriodora were used to compare the results of strength. The results of strength were evaluated based on statistical analysis. The results of compressive strength for the Pinus taeda showed no significant differences in embedment strength in the directions parallel and normal to the grain. For the Eucalipto citriodora only in the direction parallel to grain the compression strength was not significant compared with the embedment strength. For both species, only the parallel compression strength and inclined at 45o to the grain, which were to the grain, which were admitted the strain of 2‰ were not significantly different compared with the compression strength determined according to ABNT NBR 7190/1997. The normal compression strength obtained according to ABNT NBR 7190/1997 and ultimate compression strength not ...
Resumo:
Given the increasing demand for fossil fuels to power the engines of the global economy, and also the slow process of synthesis of oil, it becomes necessary to develop new sources of renewable energy in addition to improve promising sources that already exist, turning them competitive. Based on this, biomass is shown very promising between the most popular energy sources due to its availability, applicability, and above all, the fact of not emitting green house gases when analyzing the whole carbon cycle. In this sense, this work presents, through an environmental, technical and economic analysis, the impact in an aluminum mill of replacing the use of electricity, in one process, by a boiler fueled with biomass from waste process of packaging the finished product with pallets. Thus, besides the reduction of CO2 emissions, financial gains are targeted, since the main goal of the corporations that require such power is to maximize its profits
Resumo:
O município de Rio Claro, localizado na região central do estado de São Paulo, durante o auge da era do café, da imigração tanto estrangeira como regional e da instalação de várias empresas, dentre elas a Companhia Paulista de Estradas de Ferro se urbanizou num acelerado ritmo, assim como tantas outras cidades do Brasil. Como resultado o aglomerado urbano cresceu, necessitando que seu perímetro expandisse para a zona rural, comprometendo tanto o seu patrimônio histórico quanto o cultural. Antigas propriedades datadas do final do século XIX que resistem à ação do tempo e mantém viva a riqueza e a cultura da época dão lugar à cidade. Esse processo é observado no bairro rural do Sobrado, localizado na região norte de Rio Claro, que vem sofrendo diretamente com a expansão urbana através da criação de novos loteamentos residenciais e comerciais. Portanto, o avanço da urbanização tem provocado à degradação e/ou desaparecimento dos fatos históricos e culturais ainda presentes nos bairros rurais do município
Resumo:
Pós-graduação em Genética e Melhoramento Animal - FCAV
Resumo:
The present study aimed to analyze the effects of tooth bleaching with 10% carbamide peroxide (CP) gel on the bond strength of resin composite restorations to dentin. Material and Methods: Twenty cavities were prepared on the buccal surface of bovine teeth. After acid etching and application of bonding agent on dentin and enamel, the cavities were restored with composite resin. The specimens were divided into groups according to treatment on the surface of enamel / restoration: G1 - control (no treatment) and G2 (10% PC gel application for 8h/day during 14 days). After this period, the teeth were cut to produce beams with 0.81 mm2 cross-sectional area, which were subjected to microtensile test. The fractures were examined with a stereomicroscope and classified as cohesive in resin or dentin, adhesive, or mixed. Results: The statistical analysis (ANOVA / χ2) revealed that the factor treatment interfered with the bond strength, which was significantly higher for specimens of G2 (p <0.05). Adhesive fractures occurred in most of specimens of both groups with values ranging from 48.3% to 75%. Mixed fractures were the second more frequent in G1 and cohesive resin failure in G2. Conclusion: It was concluded that tooth bleaching with 10% of PC increased the bond strength of adhesive restorations to dentin.
Resumo:
In this research, we discuss important aspects related to the scope of the adult female prostitution in a municipality located in the State of São Paulo, Brazil. We rely on the theoretical contributions provided by the Cultural Studies, the Queer Theory and other aspects referenced by gender studies, by sexualities and other subjective processes, in parallel with the analysis of the reported life stories of two women linked to the context of commercial sexual practice in the studied city. From the presented informations, we observed multiple stories of women in the process of resistance to some standards of femininity, and come to the conclusion that the economic factor is not always preponderant for the entry/residence in female commercial sex practice, especially today, when relationships tend be established by the confluence of multiple interests.
Resumo:
This article approaches the questions about the sexes, genders, desires and sexual standardization practices, starting from the appearance of new sexual identities that can be classified as queer – travesty, transsexual and transgender people. Still, we problematize how the manners of established forms of subjectivity and the hegemonic institutions marginalize such forms of existences, because of the immense difficulty in the encounter with the stranger, the different and the unusual. With those analyses, we are trying to provide the creation of devices to reduce the intensities of the discrimination, of the stigmatization, of the violence, so frequently lived by the people dissident from the heterosexual gender normative, what was reported about their own lived experiences.