914 resultados para statistical data analysis
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Pós-graduação em Serviço Social - FCHS
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Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV
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Pós-graduação em Educação - FFC
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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The purpose of this study was to compare the microhardness of four indirect composite resins. Forty cylindrical samples were prepared according to the manufacturer s recommendations using a Teflon mold. Ten specimens were produced from each tested material, constituting four groups (n=10) as follows: G1 - Artglass; G2 - Sinfony; G3 - Solidex; G4 - Targis. Microhardness was determined by the Vickers indentation technique with a load of 300g for 10 seconds. Four indentations were made on each sample, determining the mean microhardness values for each specimen. Descriptive statistics data for the experimental conditions were: G1 - Artglass (mean ±standard deviation: 55.26 ± 1.15HVN; median: 52.6); G2 - Sinfony (31.22 ± 0.65HVN; 31.30); G3 - Solidex (52.25 ± 1.55HVN; 52.60); G4 - Targis (72.14 ± 2.82HVN; 73.30). An exploratory data analysis was performed to determine the most appropriate statistical test through: (I) Levene's for homogeneity of variances; (II) ANOVA on ranks (Kruskal-Wallis); (III) Dunn's multiple comparison test (0.05). Targis presented the highest microhardness values while Sinfony presented the lowest. Artglass and Solidex were found as intermediate materials. These results indicate that distinct mechanical properties may be observed at specific materials. The composition of each material as well as variations on polymerization methods are possibly responsibles for the difference found in microhardness. Therefore, indirect composite resin materials that guarantee both good esthetics and adequate mechanical properties may be considered as substitutes of natural teeth.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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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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Pós-graduação em Odontologia Preventiva e Social - FOA
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This study aims to understand if intellectual work provides conditions for the emergence of psychic suffering inuniversity teachers in a public institution of higher education. Use is made of the philosophical assumptions ofhistorical materialism, work as a category of nuclear analysis of human phenomena, and also the categories ofalienated labor and intellectual work. It also refers to mental illnesses as a social production. The research subjectswere teachers with contracts of employment in exclusive dedication (RDIDP). It is used as an instrument for datacollection, a questionnaire with closed and opened questions of opinative character. Responses were categorized andanalyzed qualitatively and had not intention of giving statistical data. However, in order to better display, the samepercentage of the sample are presented, among which one third (29.6%) have some health problem after enteringuniversity. Of those, 15,5% are related to the organization of work, 5,6% to the working conditions, 2,8%concomitantly to the conditions and the organization of work. The results indicate that the organization of work in apublic university has shown itself as a space of psychic suffering, but also of alienation.