Aplicação de adesivos estruturais em painéis de carros

The automobile industry is increasingly interested in reducing vehicle weight for greater speed, lower fuel consumption and emissions, through innovation of materials and processes. One way to do this is to seek the replacement of conventional processes by the use of structural adhesives. Structural adhesives are highly resistant materials, which can replace rivets, bolts and welds allowing the substrate / adhesive assemble is stronger than the substrate itself. One of the major advantages of gluing with respect to welding is its esthetic appearance, since it does not leave marks. For this reason, parts to be soldered require a minimum thickness so that the marks do not appear, since the pieces from gluing have no restriction as to the thickness. By replacing the vibration welding process for gluing process of the instrument panel parts of an automobile, one obtains a reduction of the thickness of the parts and therefore it decreases the weight of the car. This work aims to study the various structural adhesives that already exist on the market to be applied on the instrument panel. The mechanical test performed to measure the maximum adhesive strength was the Lap Shear Test at 23°C (room temperature), -35°C and 85°C. The types of adhesives used were the hot-melt and the bi-component. By the results obtained, it is in favor using the bi-component for application to the union of instrument panel parts

Qualidade nutricional e aceitabilidade da geleia convencional e light de maná cubiu

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

O Ministério Público estadual e a justiciabilidade do direito à qualidade do ensino fundamental público no Brasil: funções e interpretações

Pós-graduação em Educação - FCT

Reflexiones sobre el papel de la contextualización en la enseñanza de ciencias

The contextualization and discussion about the science role in the social and economical development are unquestionably important for the science teaching process. It doesn’t mean, however, that the scientific-theoretic knowledge and the strategies involved in its construction and application might be neglected. In this way, a dangerous situation is created when the contextualization is assumed as a unique and primordial target in science education. This paper presents a research carried out with 15 future chemistry teachers and the results show a worrying «supervalorization» of the contextualization beside other equally important aspects of the chemical knowledge.

Representações para o processo de dissolução em livros didáticos de Química: o caso do PNLEM

Dissolution representations in Chemistry textbooks: the case of PNLEM. In Chemistry education, so as in other sciences, the use of images is fundamental in the process of teaching and learning. By virtue of this, the textbooks can be a vehicle of such importance, therefore contributing with many images and representations. In this context, the present work has as objective to promote the analysis of the six books approved by the “Programa Nacional do Livro do Ensino Médio, (PNLEM)”, being the main subject of investigation, the dissolution phenomena. Although the recognized importance of opperate in the theoretical and conceptual level to understand chemistry phenomena, our results suggest the need of greater reflection concerning the emphasis attributed to this hability. And so, this paper has as purpose contributing in the reflection of the professor during the choice and use of the LDs and in the process of evaluation of the same.

Infrared to visible up-conversion in biocellulose yttrium vanadate nanoparticle composite membranes. Demonstration of chloroaluminum phthalocyanine light emission under up-converted light excitation

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Occurrence of pathogenic environmental mycobacteria on surfaces in health institutions

The presence of environmental mycobacteria on surfaces in two public health institutions, namely a health center and a hospital in upstate São Paulo (Brazil), was identified by polymerase chain reaction-restriction enzyme analysis (PRA). The possible sources of contamination by these microorganisms were evaluated, contributing to epidemiology studies. Methods: From June 2005 to June 2006, a total of 632 samples were collected from exposed surfaces, such as washbasins, drinking fountains, and other accessible sites, and the mycobacteria present in the samples were isolated and cultured. Results: Sixty-five mycobacteria were isolated from the 632 samples; 47 of which were detected in samples from the health center and 18 in samples collected from the hospital. The isolates were identified by DNA restriction patterns obtained by PRA, and potentially pathogenic species were found to be prevalent among the identified mycobacteria. This study shows that the PRA technique can be employed as a fast and easy method for identification of nontuberculous mycobacteria in public areas. Conclusions: The isolation of environmental mycobacteria from the two health institutions demonstrates that these surfaces are reservoirs of potentially pathogenic mycobacteria and indicates the need for continuous maintenance and monitoring. These data will add to the study of the epidemiology of these microorganisms.

Identidades brasileiras: composições e recomposições

O livro integra a coleção “Desafios Contemporâneos”, cujo objetivo é apresentar e discutir temas de interesse da sociedade em linguagem acessível ao grande público, sem prejuízo do rigor científico. No caso desta obra, os vários autores lançam um olhar panorâmico sobre a questão da identidade nacional, de modo a contribuir para o debate sobre o que é o Brasil e quem são os brasileiros. O trabalho foi dividido em cinco núcleos temáticos: a questão racial, o corpo, a língua, a religião e a cultura. Os ensaios procuram sempre adotar uma perspectiva ampla, do ponto de vista temporal e temático, tendo como horizonte a compreensão dos desafios sociais, políticos, econômicos e culturais do Brasil contemporâneos. É feito ainda um amplo balanço das diferentes formas de entender a identidade nacional, a partir da confrontação dos principais pensadores que se dedicaram ao assunto ao longo da história, e uma análise do estado atual das pesquisas sobre a identidade brasileira e os seus possíveis desdobramentos na área de ciências humanas do país.

Brazilian identities: compositions and recompositions

The Contemporary Challenges series - originally sponsored by the Research Deanship of the State University of São Paulo (Unesp) - aims at providing access to essays on crucial issues concerning the Brazilian society as a whole. With the publication of those titles, which systematically avoid unnecessary academic jargon though preserving scientific rigour, the university fulfills one of its essential tasks: that of disseminating the skills and knowledge reared within its quarters. In the present volume, focused upon sociological questions, the authors face the difficult job of grasping the intricate horizon of complexities of Brazilian identity and their presence in the current national dilemmas.

Análise in vitro da atividade antimicrobiana, citotoxicidade e genotoxicidade de um princípio ativo (Timol) e de um enxaguatório bucal (LISTERINE® ZERO™)

Pós-graduação em Biopatologia Bucal - ICT

Avaliação do potencial biotecnológico de microorganismos da biodiversidade brasileira: biodegradação de herbicidas benzonitrilados

Pós-graduação em Química - IQ

Implicações nacionais da integração regional: as eleições diretas do Parlamento do Mercosul

The process of institutionalization of MERCOSUR in recent years has increased the weight of regional integration in the internal policies of the Member States. In the Brazilian case, the bill that regulates direct elections for the MERCOSUR Parliament (Parlasul) in 2014 is an example of this influence, because it includes aspects that are related to discussions on the reform of the Brazilian political system, generating intense debate and controversy within the Congress. This article discusses the possible impacts that its adoption will have on the conduct of political reform in Brazil, on the assumption that this project represents a spillover of political reform for Brazilian regional plan. We assume that its approval can become a test of political reform planned to perform at the regional changes still under discussion in the brazilian legislature. We remind that the decision and approval of the criteria for the Parlasul direct elections is a competence of each Member-State.

Parlamento do Mercosul, integração e déficit democrático

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Parlamento do Mercosul: mudança ou continuidade?

The parliamentary representation in the Southern Cone integration is the main issue in this article, which analyzes some implications of the institutionalization of Mercosur Parliament (Parlasur). Consolidation and deepening of the integration process are related to the very weakness of congressional action under the Joint Parliamentary Committee and even the Parlasur. The hypothesis is that the creation of the Mercosur Parliament could contribute to the integration process only insofar as it could overcome the limitations experienced by the Joint Parliamentary Commission and go forward in building a democratic and representative body of regional integration.

Los parlamentos regionales en la integración de América del Sur: análisis de la percepción popular

Este artículo tiene por objeto discutir la percepción popular sobre el déficit democrático y la eficiencia de los parlamentos regionales en la integración regional, principalmente en los procesos del Mercosur y la Comunidad Andina. Por tanto, el trabajo busca revelar el impacto de la institucionalización de un parlamento regional en la percepción que la sociedad presenta sobre el proceso de integración. Analizando tres casos distintos: Parlandino, Parlasur y Parlamento Europeo, el trabajo busca comprender en qué medida la existencia de una representación política regional contribuiría a aumentar el grado de conocimiento y de interés de la población sobre el tema de la integración. Partimos del supuesto de que los parlamentarios tendrían un papel positivo en la democratización, y buscamos demostrarlo por medio de dos variables principales: las elecciones directas y su influencia en el proceso de toma de decisiones.