Processo de fabricação de selador endodôntico rápido e produto obtido

Processo de fabricação de selador endodôntico rápido e produto obtido formado por clinquer, inicialmente na forma de pelotas, e transformado em pó utilizando-se almofariz e pistilo ou moinho de bolas, sendo que, posteriormente o pó é peneirado, utilizando-se peneiras de mesh variando entre 200 e 400, de maneira que o pó de sulfato de bário ou de óxido de bismuto também passam pelo mesmo processo, de forma que, após o processo de pulverização e controle de tamanho de partículas, adiciona-se o radiopacificador ao pó clinquer na proporção que pode variar entre 10% a 30% em massa, sendo que, na preparação da emulsão, o carboximetil celulose (CMC) é misturado em água destilada na proporção para cada 100ml de água pode-se proporcionar entre 200 e 800 mg de CMC...

Metodologia de curvatura de bambu laminado colado (BLAC) para fabricação de mobiliário: diretrizes para o design

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estados de impurezas em semicondutores e nanoesetruturas sob campos externos

Pós-graduação em Ciência e Tecnologia de Materiais - FC

Avaliação de impactos ambientais de equipamentos eletroeletrônicos através de inventário dos materiais usados na fabricação

Pós-graduação em Engenharia Civil e Ambiental - FEB

Fabricação de filmes ultrafinos automontados para aplicações em células a combustível

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

Avaliação de qualidade de amidos de mandioca modificados utilizados na fabricação de pão de queijo

The food industry looks for new ways and strategies to standardize the marketing products in the customer market. The modification of the cornflour that are produced in the manufacturing of the cheese bread has been one of the these ways, since some raw materials that are used to make the cornflour present different features in each supplyed allotment. The present research had as a main purpose to analyse such features looking forward to improving the quality of the final product. Thus, some tests were done to verify the pH, humidity and acidity; it was checked the percentage of carbonyl and carboxylic groups and the power of expansion to five different allotments and to farina, for example: pre-gel, natural, expandex farina as the combination of the three cited kinds. After diversifying the allotments, different results were acquired, even to an unique kind of farina and it was not possible to correlate the results of acidity, the percentage of carbonyl and carboxylic groups and the power of expansion. The pH and humidity are proper for each kind of farina. This way, the raw materials that are used for each cheese bread manufacturing must be analysed in each allotment

Processo de fabricação de tarugos pelo método HotTop de ligas de alumínio da série 6XXX e as não conformidades desse processamento

The goal of this work is to report some problems that occur in the in the production of aluminum billets (series 6XXX) produced by the hot top process in the Alcoa aluminum Inc. The aluminum fabrication process is described from its first stage, since the mining until the reduction, smelting and treatment of the metal. One of the plant’s final product, are billets for clients that produce profiles by extrusion. The product’s final quality highly depends on the whole production process. Therefore it’s necessary to use good practices in the treatment of the metal, follow up its fabrication and control its thermal treatment, in order to meet the required standards to satisfy the clients. The billet’s production method and its variables will be detailed through temperature and casting speed, cone of water flow, cooling rate, duration of thermal treatment, degassing and metal “in line “filtering, in other words when it’s still found in its liquid state. The non-conformities of the process were studied by metallographic analysis, both macrostutural and microstructural that will be described and discussed in this work

Análise da deposição de filmes finos semicondutores de GaN e GaN e Ga1-xMnxN preparados por sputtering reativo

Thin films of Ga1-xMnxN have great interest in its potential for control of electron spin (spintronics), in most cases this material is synthesized by techniques that have a high degree of control the deposition parameters, such as molecular beam epitaxy (MBE) and deposition of metalorganic chemical vapor deposition (MOCVD). The sputtering technique is an alternative route to produce such materials. Here we study the film deposition Ga1-xMnxN by reactive sputtering technique and apply enhancements such as a glove box, a residual gas analyzer and temperature control system, in order to growth films epitaxially using an analysis of the preconditions of films analyzed by spectroscopic techniques and microscopic. These procedures helped to improve the technique of deposition by cleaning substrates in an inert environment, and by the analysis of trace gases and heating the substrate holder as explained in the literature. Through the applications and comparisons it can be pointed out that the technique has the advantage of its simplicity and relatively low cost compared to MBE and MOCVD, but produces polycrystalline material

Fabricação de rodas: uma análise comparativa

In our country, the majority of freight and people by road happens municipal, state and federal. Thus, the heavy vehicles like buses and trucks are the main means of transporting people and cargo. This graduate work aims to study the process of manufacturing wheels for trucks, because we can see the lack of literature on the manufacturing process of wheels and also the importance of the processes used to manufacture wheels, such as lamination, stamping, puckering, machining, welding and painting

Um Estudo de caso sobre a fabricação de engrenagens

Human evolution has always been linked to personal or group needs. This statement is based on observations of the day to day. With time, we can now choose from among many excellent techniques and materials that can be employed in the construction of this part of the machinery so important to the functionality of machines and equipment. When we look at a machine, we see that this is usually designed by combining a set of pre-determined in your project. Among the many pieces that we can highlight one of them is of fundamental importance, the gear. Gears are an example of the mechanical devices used by the older man, and are currently the most important components in the transmission technique. This is responsible for transmitting rotary motion from one shaft to another. Gears are one of the best among the various means available for the transmission of motion. Gears are the most important components of modern technique of transmission. The main purpose of a transmission gear is precisely transmit torque and speed. The requirements have increased significantly due to pollution and energy conservation. Nowadays, gear transmissions are required to transmit high strength through all his life together with the high demand on performance and sound properties. An optimal design for the gear you need a set of the most modern fabrication machines and cutting tools. In the following work is studied on the manufacture of gears, making the monitoring of a case study of the try out the installation of a gear grinding machine

Otimização de custo no processo de fabricação de mangueira hidráulica

A large part of hydraulic hoses is produced on a mandrel. The mandrel has longer length and circular profile being produced by extrusion of polyamide polymer, which in this case is imported, then the process is depending on the import process, which entails high shipping costs and fees. This work studies the production of recycled mandrel, using the mandrel that is out of dimensional to produce hoses. After the production of recycled mandrel mechanical tensile and hardness were performed both in the natural and recycled mandrel to compare them. It was observed that recycled mandrel presents the tensile properties and hardness superior to natural mandrel. Thus, this work will directly impact the company`s business ultimately reducing costs, reducing waste and reducing environmental impacts

Estudo de casos de seleção dos materiais e processos para a fabricação de fuselagens

This work proposes a study on the materials selections and processes for the manufacture of aircraft and showing a methodology to reduce the manufacturing cost. The DFMA can be understood as a methodology that aims at reducing manufacturing and assembly costs and coupled with the increase of product quality through design simplifications. The most commonly material used in the manufacture of aircraft is aluminum alloys due to these possess great structural strength, good elasticity, and being stainless having a low specific weight (about 1/3 that of steel), reducing the weight of the aircraft. A case study in which an operation in the process of verifying the quality was generating unnecessary costs time / man for the company was also developed. The problem solution was simple, just removing the attachment process. It was found that the DFMA methodology is extremely important for the simplification of processes and projects, contributing to the reduction of manufacturing costs of aircraft

Avaliação das boas práticas de fabricação em linha de processamento de queijos Minas frescal e ricota

In order to assure the maintenance of foods integrity and quality, for avoiding chemical, physical or biological contamination, it is essential to follow the Good Manufacturing Practices (GMP). Among the techniques used for evaluating GMP there is the observational analysis carried out by means of a check-list form application. The present study evaluated the suitability of GMP in a dairy industry producer of Minas fresh and ricotta cheeses, located in São José do Rio Preto, SP, by applying a check-list form. A significant improvement in conformity was evidenced, increasing from 43% to 78%. Neither the blocks related to the handlers nor the existing documentation in the company showed any improvements, as poor conditions unchanged. All of the other evaluated blocks showed significant improvement after applying the GMPrelated corrective measures. Based on these findings, the observance of corrective measures by the dairy industry on dairy products, physical environment, GMP, and handlers training was crucial for assuring the improvements and to increase the product quality and consumers safety.

Diodo planar orgânico Schottky: construção e caracterização

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Corporalidade brasileira na fabricação da identidade nacional

This paper discusses how, through the creation of Embratur (Brazilian Tourism Company) in 1966, an idealized Brazilian female body was constructed and used to help manufacture a national identity, reinforcing the stereotype of the sexualized Brazilian woman. As it was often associated with sex tourism, this stereotype received much criticism and led to a negative image of Brazil abroad. However, in the 1990s the official tourism lobby softened the “sexy tone” of its discourse, and in 1999 Embratur received an award from the World Tourism Organization for its campaign to help fight the exploitation of children and youth by sexual tourism. In order to better understand how this change in the idealized Brazilian female body unfolded, it is important to deconstruct beauty standards – focusing on those that apply to Brazilian women as seen from abroad – and their relationship to modern consumer culture. Assuming that the cultural analysis of the female body emerges as an important issue in the field of Social Science, the focus on body image can be viewed as a key element in discussions about the construction of national identity.