994 resultados para Processos de fabrico


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Pós-graduação em Design - FAAC

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Currently productivity is a concern in large firms and in heavy machining industries could not be otherwise . The issue of time in the process becomes a relevant and worthy of analysis point , especially that the setup time becomes a critical issue to be addressed . Due to the size of the equipment studied ( heavy machining ) and especially with regard to the characteristics of the machine tool and the parts to be machined , generally robust and large parts , the preparation of such parts shall be made accurately to the machining has a good result as planned . With the setup acting as a limiter of productivity growth in this sector , actions constantly in search of reducing downtimes and optimization are taken . This study aimed to conduct a study that confirms increased productivity by reducing the machining time , especially setup time and also with the implementation of organizational tools. Actions taken in heavy machining industry Arm L- 580 Liebherr company in Brazil specifically in CNC Boring PAMA Speedram 3000 were analyzed . Through a qualitative study using the method of case study , it was examined before and after the sector and reducing setup times . Evidencing the shares through figures and collection times . The end result of this analysis was to verify that through simple actions productivity and organization in the area were directly affected in a positive way , and supporting organizational change throughout training were taught to be incorporated into the company culture

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A cachaça é uma bebida exclusivamente brasileira que vem conquistando espaço no mercado dentre as bebidas alcoólicas destiladas. Porém, o Brasil é responsável pelo consumo de 99% do total produzido por ano e apenas 1% é exportado. Isso se deve à falta de padronização na produção e de conhecimento por parte dos produtores, que levam a contaminação por compostos indesejáveis produzindo uma bebida de baixa qualidade, tanto físico-química quanto sensorialmente. Os métodos de redestilação e filtração em carvão ativado vêm sendo alternativas para melhoria da qualidade. Amostras de cachaças foram submetidas a esses métodos e avaliadas quanto à composição química e a qualidade sensorial. As análises químicas de acidez volátil, aldeídos, ésteres, metanol, álcoois superiores e carbamato de etila foram realizadas em triplicatas utilizando cromatografia gasosa. Para a análise sensorial, as amostras foram submetidas ao Teste de Aceitação utilizando escala hedônica híbrida de nove pontos e avaliadas pelo Teste de Kruskal-Wallis. Foi aplicado também o Teste de Ordenação para avaliar a preferência entre as amostras e a Intenção de Compra foi avaliada utilizando-se uma escala de cinco pontos, de certamente não compraria a certamente compraria. A redestilação reduziu os níveis de acidez volátil, cobre e carbamato de etila enquanto a filtração diminuiu as concentrações de aldeídos e ésteres. Os processos de redestilação e filtração em carvão ativado não alteraram a aceitação da bebida, mantendo seu perfil sensorial e melhoraram a composição química.

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The substitution of diesel by biodiesel meets the current scenario to increase the consumption of alternative energy sources promoting sustainable development of a country. However, the production of biodiesel concurrently generates the formation of glycerine in the process is a by-product. The main application of glycerine is in the food industry, cosmetics, soaps, pharmaceuticals, among others, but these segments are not capable of absorbing the generated volume of glycerine, whereas the total volume of the biodiesel produced about 10% correspond to glycerine. Glycerine obtained from the transesterification reaction (necessary for production of biodiesel) triglycerides and alcohol contains certain impurities such as water, salts, esters, alcohol, and residual oil, which decrease the value. Thus, the purification process or the direct use of glycerine become essential to make it competitive biodiesel production process. This work aims to evaluate the different processes of purification and the use of glycerine obtained as by-product in the production of biodiesel. The research was theoretical, based on technical articles and theses published on this subject, and from these databases was established a summary of the most important processes

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This article presents and analyzes the configuration of a project of university extension, developed in partnership with public schools, which has as themes sexuality and gender issues. We seek to understand to which extent sexuality and gender issues contributes to the continuity of the trio teaching / research / extension, while acting as promoter of knowledge of emancipation of those envolved (under graduates, faculty and the community). We based our presuppositions on action research, with document analysis and questionnaires responded to by participants in the project during the period 2005 to 2011 as the instrument of data collection. We constituted that formative processes that disrupt the predominant perspectives in the educational processes of a stereotypical, biologizing and heteronormative nature of sexuality and gender issues were favoured. Moreover, the experience of inseparability of teaching/research/extension was favoured, based on the understanding of knowledge as something constructed in and through social relations.

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This text aims to present some ideas of the philosopher Walter Benjamin, one of the most intriguing intellectuals of our time, trying to outline in his work the relationship that the author establishes between childhood playing and ludic culture, more precisely regarding the memory of playing, childhood, culture, history and memory in contemporary society after the twentieth century. Thus, in order to identify reinterpreted experiments, as places, forms of playing and types of toys made out of this paradigm, we were guided by the notes, essays, translations and articles in which Benjamin identified conceptions of childhood and ludic culture. Benjamin's view of childhood is not childish, simplistic or reductive. His works allow us to discuss and justify the need for a more detailed analysis on the phenomenon of development and teaching practice within the everyday schoolchildren. By revisiting the original ideas, and irreverent criticism of Benjamin, thinking education from his account, we hope to contribute with other studies in the field of education, by elucidating the process of development and teaching practice in relation to the ludic childhood culture, specifically regarding childhood and the places of childhood in the contemporary context.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Psicologia - FCLAS

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