726 resultados para Fragilidade osmótica


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Pós-graduação em Ciência e Tecnologia Animal - FEIS

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

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The diversity of social relations in the Amazon region is responsible for the complexity that generalized and simplified ideas conceal in the understanding of its Environmental History. Recent historiography on the North of Brazil shows that this diversity is not to be neglected, under the risk of perpetuating stereotypes and reproducing in common sense social and economic aspects that often lie at the basis of cultural actions, projects and values that push the destruction of the environment, the fragility of citizenship and the uncertainties about the future that hover over the Amazon in the 21st century.

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This paper presents the main achievements in the field of children and youngsters social rights and provides some data on Brazilian education that show the discrepancy between the legal guidelines and the educational situation of children and youngsters within public schools. It presents a critical approach to the ways production and attendance of school problems have been interpreted and shows the dimension in which social facilities established to provide protection to children and adolescents have not been able to ensure a good quality schooling. It highlights the Guardian Council as addressee of school demands and stands out the urgency of debating the violation of fundamental rights such as the lack of quality in education, the repeated situations of failure, and dropping out experienced by a significant number of poor students. The analyzes developed point to the fragility of the relationship between school and Guardian Council revealing an institutional dynamic that individualize social issues. The analyzes developed also suggest the possibility of including Psychology mediation to school, family and Guardian Council. These aim to break the hegemony of the gaze individualizing approach that blame individual and / or family for school failures. This all present to professionals the urgenct for a critical attitude, based on theoretical and practical approaches able to research and propose critical interventions in order to overcome the production of educational exclusion.

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What became accustomed to call “paganism” is undoubtedly one of the most significant forms of what is designated as “popular religiosity”. This expression, which seems useful when a generalization is required, shows all its weakness when a more precise and objective observation of a particular religion is attempted. Would the official visigothic kingdom’s “conversion” to Catholicism, with Recardo (586-601) at the Council of Toledo of 589 have effectively matched to the “conversion” of this kingdom’s population? Firstly, it is necessary to consider, in beyond the exalting intentions of the sources of that moment, that mass conversions do not imply a radical change in the convictions and religious practices of an entire people. Secondly, that “conversion” and “Christianization” are not synonymous. “Religiosity”, which includes the “conversion”, implies a fundamental religious attitude, which can simply be interior and personal. On the other hand, “religion”, in which “Christianization” is included, would correspond to a public aspect, institutionalized, which elaborates a set of techniques aiming, as in the case of “religiosity”, the guarantee of the supernatural Thus, elevated to the position of “official religion,” Catholic Christianity would live with a series of rites, rituals, devotions, from the previous “religiosity” that, through its ecclesiastical perspective, would be reprehensible, considered marginal and something that would lead to error. However, on the eve of the Muslim invasion in 711, not only among the laity but even in ecclesiastical segments, the manifestations of the “paganism” still were aim of coactive condemnation in the Catholic kingdom of Toledo’s councils.

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Pós-graduação em Psicologia - FCLAS

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The disadvantages generated by the acid etching of the dentin, such as an increase in its permeability, in the surface moisture and in the potential to denature the external dentinal collagen, the formation of a fragility zone and the citotoxicity of the adhesive monomers; which are all aggravated by the depth of the dentin, have stimulated new and different treatment philosophies of the dentin. The purpose of the present study, therefore, was to investigate the effects of three dentin treatments: laser irradiation, acid etching and hypermineralization, in the shear bond strength of the SMP Plus bonding system. Sixty bovine incisors were extracted and randomly selected immediatly alter the animal's death. They were kept frozen (-18°C) for no longer than 14 days. After buccal dentinal surface had been exposed, X-Rays were taken to control the dentin thickness. The specimens were separated into two groups: (1) Control, kept in distilled water at 4ºC; (2) Mineralized, kept in hypermineralized solution at 4°C for 14 days. Each group was divided into three sub-groups according to the type of dentin treatment used: group F - followed the manufacturer instructions (acid-etching + primer + bond), group AL (acid-etching + primer + bond + laser) and group LA (laser + (laser + acid-etching + primer + bond). A composite resin standard cylinder (Z100-3M) was bond to the dentinal surface and the shear bond strength performed on a Universal lnstron machine 4301, with 500 Kg load and at 0,5mm/min. speed. The analysis of variance (ANOVA) determined that the treatments influenced the shear bond strength values (p<0,05) with the following average shearing load at failure: AL (9,96 MPa), F (7,28MPa) e LA (4,87 MPa). The interaction between the two factors analyzed Group (control and mineralized) and treatment (F, AL, LA) also influenced the shear bond strength (p<0,05). The highest values were obtained...

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Ciência Animal - FMVA

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Pós-graduação em Docência para a Educação Básica - FC

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The free-end removable partial dentures (RPD) shows a complicated and peculiar biomechanical behavior that impose high occlusion forces to the abutment teeth. By this way, the aim of this study was to evaluate the several factors that influence the clasps indication to free-end RPD. It was analysed 84 designed and planned study models of 71 patients, involving 130 clasps near-by a free-end; followed by clinical and radiographical informations. It was observed that bar clasps (“T”, “Tmod”, “i”) were used in 88.46% of abutment teeth. In the others (11.55%), it was used simple, combinated or ring circumferential clasps, and MDL. In abutment teeth with high equator line the “i” clasps were predominant (48.48%). The “Tmod” clasps were predominant in abutment teeth with low equator line (50%) or in middle third (51.35%) and “T” clasps were predominant in inclined equators with mesio-buccal (56.52%) or disto-buccal (66.66%) retention. In the posterior abutment teeth, it was prevalent the distal rest (63.52%) and embracing to the adjacent tooth. Some others factors like long clinical crown (5.38%), wrong position of abutment teeth (4.61%), aesthetics (3.07%), retention in alveolar ridge (2.3%), fragility of abutment teeth (1.53%), short clinical crown (0.76%) and short space to the clasp (0.76%) influenced directly during the clasps selection. Factors like mobility of abutment teeth, height of muscular insertions, depth of buccal fornix and antagonist arch acted like secondary factors. After the informations analysis it may be concluded that the bar clasps with distal rest and embracing to the adjacent tooth were the most indicated to free-end RPD

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