Redução do tempo de setup de máquinas de usinagem em uma industria automobilística

Continuous improvement of industrial processes is one way to become companies more competitive in the market. For this, a fairly widespread use is the methodology of lean production systems, by eliminating waste. One of the tools of these systems is the method of rapid exchange of die or also called SMED, which will be applied in this study. The study aims to develop proposals for reducing the time of set up of two machines in two machining lines, watching also the ergonomics and safety conditions in this operations. The set up time reduction is justified among others, due to increase the machine productivity. In applying the connecting rod machining line, there were two types of exchange. Reductions in time to set up proposals reached values of 47% to one of them, and 55% to the other. It is important to underline that to reach this result, there was no need for large investments. In the application in block machining line, was developed an improvement in the ergonomic area. It was placed a pulley block that came to increase the time of tool change. Aiming to improve the security of the exchange, without productivity loss, the method was applied to reduce this time. It was developed two proposals.: the first would reduce that time by 19%, and does not require many resources of the company. The second involves the parallelization of the exchange, so that the reduction is 48%. However, this proposal requires one more manpower at the time of exchange and it is not always possible

Estudo da deposição de energia das radiofrequências através do método das diferenças finitas dependentes do tempo Monografia

Radiotherapy in veterinary practice is already known and widely distributed in large specialized centers of developed countries. In early 2000, there were about 30 radiotherapy equipment specifically designed for the veterinary clinic in the United States. In Brazil, the veterinary radiotherapy is still confined to research in universities, where most of the procedures is radiation therapy performed with superficial x-ray machines, with a voltage between 50 and 150 kVp, focus-distance surface (DFS) between 20,0cm and 40,0cm. As that occurs in human medicine, new research strengthens the development and prospects for the use of radiotherapy as a safe option for treating cancer in animals. This paper presents a methodology for calculating the exposure time for superficial radiotherapy procedures in veterinary medicine for small animals (dogs and cats). The dosimetric parameters of X-rays are determined using a spreadsheet tool for Microsoft Office Excel, developed in this paper for a device Dermopan 2, Veterinary Hospital of UNESP in Araçatuba. Using the worksheet helps the veterinarian to determine the time of exposure to radiation determined for each clinical case, optimize the workflow for professionals in veterinary radiotherapy procedures, which often lack the medical physics in team and at the time of radiotherapy. The correct use of spreadsheet decreases the chances of errors in dose rates of radiation, providing a higher quality of care

Subsídios para implantação de trincheiras de infiltração na área urbana de Rio Claro/SP

The purpose of this work is to study the theme “infiltration trenches” in some of its main aspects, such as sizing methods and parameters related to this, in order to subsidize the installation of these structures in the urban area of Rio Claro/SP. For purposes of sizing, the “rain-envelope method” was used for its simplicity and direct application from the local characterization data and the IDF (intensity-duration-frequency) curve data. The method bases on the determination of the tributary volume of input and output device. The curve of values accumulated over time of the volumes tributaries to the device, which is built on the flow rates obtained from the local IDF curve, is compared with the value curve of his effluent volumes determined from the flow characteristics obtained from the infiltration soil. The maximum difference between the curves is the volume sizing. Five locations were chosen in the urban area of Rio Claro for implementation of these devices, considering the soil type, hydraulic conductivity of each area and lot size according to the Master Plan of Rio Claro. This work also presented an estimated reduction of the runoff in urban lots by using infiltration trenches.

Redução de tempo de setup de uma máquina de encartuchamento pela técnica SMED

Currently the market requires companies to adapt for they can have the lowest possible cost in their manufacturing, be it a good or service, thus obtaining a greater profit. For this profit the Toyota Production System applies lean manufacturing practices actions with reduced spending, smaller lots and stocks, generated by market demand. The technique allows SMED with few actions, changes and investments that time does not exceed one digit on your total time. This case study shows that only with standardization and use of inexpensive improvements, could reduce setup time on a machine for 70 minutes to time of approximately 48 minutes with little investment, demonstrating the viability of the tool presented

Análise da curva de resfriamento da liga de alumínio AA 356

It is very important to study the macrostructure of a material in the crude state of solidification due to influence the mechanical properties, as well as the study of their cooling curve. In the present work was to study the alloy AA 356, its macrostructure and its cooling curve. The material was cast in two different molds, a sand and other metallic. In this paper we study the differences in its macrostructure and its cooling curves. In macrostructure can observe the absence of the three zones of solidification and the presence of large pores because of moisture in the sand. In the sample taken from the metal mold can observe the three zones of solidification: a coquilhada, columnar and equiaxed

Padronização da técnica de PCR em tempo-real na avaliação da pluripotência de células-tronco mesequimais caninas

Este relatório final tem como objetivo apresentar as atividades desenvolvidas no período de janeiro/2009 a março/2010, pela aluna Thaila Isabel Wodewotzky, relativas ao projeto de conclusão de curso intitulado “Padronização da Técnica de PCR em tempo-real na Avaliação da Pluripotência de Células-tronco Mesenquimais Caninas”, para fins de obtenção do título de Bacharel em Ciências Biológicas. O referido projeto objetiva avaliar a quantificação e relevância dos níveis de expressão gênica do fator de transcrição Oct4 em CTM´s, por meio da padronização da técnica de PCR em tempo-real. Para tanto, o RNA total das CTM´s obtidas, isoladas e cultivadas a partir da medula óssea de cães foi extraído a partir da medula óssea de cães a fim de avaliar a quantificação e relevância dos níveis de expressão gênica do Oct4 por meio da utilização da técnica de PCR em tempo-real com transcrição reversa (RT-qPCR). O RNA total foi extraído e submetido à reação de transcriptase reversa, para a obtenção do cDNA. Posteriormente esse cDNA foi utilizado na padronização da técnica de qPCR utilizando primers desenhados a partir de sequências obtidas no genebank. . Como normalizador utilizou-se o RNA codificante de GAPDH.Verificou-se desempenho satisfatório dos primers para Otc4 na avaliação de CTM´s de cães. Também o RNAm do GAPDH foi adequado como normalizador. Dessa forma, esse sistema pode ser utilizado na realização de testes quantitativos utilizando amostras de células-tronco embrionárias caninas

O mal-estar docente e os limites da experiência no tempo presente: uma leitura frankfurtiana

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

Um tempo para a literatura ou a vida entre o labirinto e a bússola

Since the priors, man has been trying to understand the concept of time. From myth to quantum physics, time is something that inspires reflections on our own lives. Do we exist in time or for time? Literature, a peculiar form of knowledge, deals with the experience of time in many ways. By avoiding categorizations, literature converges time and space in a dimension in which labyrinth and compass converge: at the reading time, in the reader’s space, in the universe of the book, where Cronos, Kairos, and their heir, by excellence, the literary word, constellate. In this way, in this essay, I discuss some aspects of the relationship between literature and time, or still, what literature can teach us about the time.

Degradação da manipueira utilizando reator de lodo ativado em batelada sequencial com elevado tempo de paralisação intermitente da aeração

Conselho Nacional de Desenvolvimento em Pesquisa (CNPq)

Machado de Assis, jornalista: o homem, o texto, o tempo.

This article analyses some of Machado de Assis’ newspaper chronicles written in 1878 for O Cruzeiro. We intend to show that behind their extremely free literary composition, those texts show the author’s deepest critical point of views. Respecting the narrator fictional status, we are trying to see, as carefully as this subject demands on us, the man behind the journalist.

Estudo para correção dos sensores da rede de monitoramento do campo elétrico em função do campo elétrico de tempo bom

A monitoring network of atmospheric electric field covering the Vale do Paraiba region was implemented. The sensors were located on different sites with different altitude and geographic topology. The present work reports the study carried on those sensors in order to verify the necessity of using some correction factor to the measured local electric field intensity due to effects of local environment. The measurements were done in continuous 24 hours per day with the data recorded on registers in each device accumulating information during a period of four months. The relation between the electric field values by each sensor was compared to the reference located on Sao Jose dos Campos city using the same period. In a graphical analysis using the local field intensity and the reference, the data were fitted to a straight line obtained by minimum square method. Variation up to 95% was observed between the field values in some sensors. Another method was proposed, comparing the mean values of the electric field in a function of time. The variation in some sensors reached up to 133%. We conclude that the variations are due to local atmospheric conditions and no correction factor is required on the electric field sensors

Expressão de genes no embrião e endosperma durante a germinação de sementes de lobeira (Solanum lycocarpum St. Hill)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Vida e morte em diálogo com a voz narrativa, o tempo e o espaço em Mrs. Dalloway, To The Lighthouse e Between the Acts de Virginia Woolf

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Determinação do tempo de vida de restaurações totalmente cerâmicas (y-tzp/porcelana) com incidência da carga em diferentes regiões de contato

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito da escovação utilizando dentifrícios com diferentes graus de abrasividade no desgaste do esmalte após o uso de agentes clareadores com e sem cálcio, em diferentes intervalos de tempo

Pós-graduação em Odontologia Restauradora - ICT