The effect of water immersion on the shear bond strength between chairside reline and denture base acrylic resins: Basic science research

Purpose: The effect of water immersion on the shear bond strength (SBS) between 1 heat-polymerizing acrylic resin (Lucitone 550-L) and 4 autopolymerizing reline resins (Kooliner-K, New Truliner-N, Tokuso Rebase Fast-T, Ufi Gel Hard-U) was investigated. Specimens relined with resin L were also evaluated. Materials and Methods: One hundred sixty cylinders (20 × 20 mm) of L denture base resin were processed, and the reline resins were packed on the prepared bonding surfaces using a split-mold (3.5 × 5.0 mm). Shear tests (0.5 mm/min) were performed on the specimens (n = 8) after polymerization (control), and after immersion in water at 37°C for 7, 90, and 180 days. All fractured surfaces were examined by scanning electron microscopy (SEM) to calculate the percentage of cohesive fracture (PCF). Shear data were analyzed with 2-way ANOVA and Tukey's test; Kruskall-Wallis test was used to analyze PCF data (α = 0.05). Results: After 90 days water immersion, an increase in the mean SBS was observed for U (11.13 to 16.53 MPa; p < 0.001) and T (9.08 to 13.24 MPa, p = 0.035), whereas resin L showed a decrease (21.74 MPa to 14.96 MPa; p < 0.001). The SBS of resins K (8.44 MPa) and N (7.98 MPa) remained unaffected. The mean PCF was lower than 32.6% for K, N, and T, and higher than 65.6% for U and L. Conclusions: Long-term water immersion did not adversely affect the bond of materials K, N, T, and U and decreased the values of resin L. Materials L and U failed cohesively, and K, N, and T failed adhesively. © 2007 by The American College of Prosthodontists.

O Estado no sistema sociometabólico do capital: uma relação de complementaridade na base material

Pós-graduação em Ciências Sociais - FFC

A sociologia contemporânea na sala de aula: (re)pensando algumas perspectivas para o ensino das ciências sociais no ensino médio

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A Teoria dos jogos e as ciências sociais

Pós-graduação em Ciências Sociais - FFC

Drogas, violência e políticas sociais: estudo de uma comunidade terapêutica

Pós-graduação em Ciências Sociais - FFC

Os sentidos outorgados por docentes de cursos de licenciatura sobre a educação ambiental como possibilidade para se pensar a formação de professores

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Formação do profissional de educação física no contexto das atividades físicas de aventura na natureza

Pós-graduação em Ciências da Motricidade - IBRC

Entre a potência e a impotência do exercício profissional de médico perito no Intituto Nacional do Seguro Social (INSS): a importância do Estado como componente dilemático e paradoxal

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A interlocução do Serviço Social com os movimentos sociais no Brasil: uma análise a partir da produção teórica com enfoque no trabalho profissional

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O serviço social no Brasil: a reinstrumentalização necessária

Pós-graduação em Serviço Social - FCHS

Cultural consonance and arterial blood pressure in urban Brazil

In previous research in Brazil, we tested the hypothesis that cultural consonance is associated with arterial blood pressure. Cultural consonance is the degree to which individuals are able to approximate in their own behaviors the prototypes for behavior encoded in shared cultural models. Individuals who had higher cultural consonance in the domains of lifestyle and social support had lower blood pressures. The aim of the current research was to replicate and extend these findings. First, a more extensive cultural domain analysis was carried out, improving the description of cultural models. Second, more sensitive measures of cultural consonance were developed. Third, data were collected in the same community studied previously. The following findings emerged: (a) cultural domain analysis (using a mix of quantitative and qualitative techniques) indicated that cultural models for these domains are widely shared within the community; (b) the associations of cultural consonance in these domains with arterial blood pressure were replicated; and, (c) the pattern of the associations differed slightly from that observed in earlier research. This pattern of associations can be understood in terms of macrosocial influences over the past ten years. The results support the importance of long-term fieldwork in anthropology. (c) 2005 Elsevier Ltd. All rights reserved.

A luta em defesa da Sociologia no Ensino Médio: 1996-2007 : um estudo sobre a invenção das tradições

Pós-graduação em Educação Escolar - FCLAR

Desenvolvimento territorial, políticas públicas e inovação social no Alto Jequitinhonha - MG

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

História ambiental: um olhar prospectivo

Examination of methodological approaches and work possibilities for historians in the research and teaching of history of environment, its themes and potential objects of studies. The attention to books and articles helps on this balance and on the identification of future routes for the Environmental History in Brazil. This historiographical practice has been keeping, among us, a salutary opening for the dialogue with the foreign historiography, with an increasing valorization of the research in Latin America and with social science and natural subjects. The incipient Foreign Exchange Program suggests the tasks and the success found by this approach will be result of the interaction between researchers, projects in group, circulation of publications and institution strengthening of the historical knowledge in the beginning of the century.

Teoria e metodologia na escrita da História do Brasil: Afonso de Taunay e a Academia Brasileira de Letras

The history of historiography in recent decades has the breathing space needed in the concerns of historians and has been transformed into a research field with its own issues. Uploaded this in perspective, this paper aims to understand how aspects of the theory of history and methodology have been addressed by Afonso de Escragnolle Taunay (1876-1958). We selected the letters exchanged by the author, the speeches of acceptance at the ABL, some articles and books produced by Taunay in the 1930s. In the first decades of the twentieth century, when it sought to define the historiography and its limits in both the literature and social science sources, the subjectivity is presented as the final decision making of the author, especially those related to the new site production Taunay, the Brazilian Academy of Letters.