116 resultados para Saw filing.


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Because of the great metallurgical advances, the welded tubes by HF / ERW (High Frequency / Electrical Resistance Welding) have played a more active role in the oil and gas, gradually replacing tubes produced by other processes (UOE, SAW, and others) to deep water applications, in high and extremely low temperatures, highpressure conditions and in highly corrosive environments. However, studies have revealed that defects in the welded joints are in one of main causes of failures in pipelines. Associated with damage external and the stringent requirements of this sector, the welded joints become particularly critical for his toughness and the determination of this particular property is fundamental. This study aims to evaluate the toughness of the HF / ERW pipes in HSLA steel API X70 class, used in pipelines transport systems of gas and oil from data obtained with CTOD tests (Crack Tip Opening Displacement). The main objectives of this project are: mechanical and microstructural characterization of steels API X70 manufactured in Brazil; and evaluation of the toughness of weld process by HF / ERW steel API X70 national. After having the tests done, mechanical, chemical and metallurgical, we have the conclusion that those pipe are in agreement to API 5L 42ª edition for X70MO and the toughness behaves like the expected

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Considering the necessity of implementation of the Information Technologies and Communication (ICT) in the public Brazilian schools, the São Paulo State government hearing the call of the federal government and, with the objective to promote the digital inclusion, created the Programa Acessa Escola. The research that we realized and bring expressed on this text, is about such program and allowed us comprehend how it had been developed in the public state schools of the city of Guaratinguetá. By visiting the schools, we saw the manner that each school make use of his informatics laboratory; how they understand the government Project; how they develop actions of use of the laboratory and, particularly, how they use the informatics laboratory to the teaching and learning of mathematics helping the professor and the students. To make possible to understand this use, was realized interviews with the responsible intern of each one of the 14 (fourteen) schools of Guaratinguetá; with the pedagogical coordinator or director of the school and with the mathematics teacher. By the analysis, realized using a qualitative approach of phenomenological nature, we understand that the intern see himself as an auxiliary of the student and professor in the use of the laboratory. The director or pedagogical coordinator understand that the laboratory is an excellent resource to the school, but still exist the necessity of more resources that allow to attend properly the community; and the mathematics teacher consider important the program in the school as much for the students digital inclusion as for the teaching but they feel not safe to use into his classes, because they consider that there is a lack of capacitation and collaboration to make their activities relevant to the learning. That make possible to recognize what is the function of the intern and what is the way that the students and professor ... ( Complete abstract click eletroctronic access below)

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The objective of this study was to find and discuss the possibilities of action of a public relations professional in social media, taking as an example, the most popular, Facebook and Twitter, to work the organizational communication with the public consumer. Social media are gaining more followers, who are seeking information on companies before consuming your products or hire your services, getting attention for any kind of promotion or crisis of this organization. We saw how public relations mediate communication between company and consumer, being responsible for the clear, objective and correct posting of your organization in social media

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This work describes and contextualizes the PROESF - Special Program for Teacher Training Exercise in the early grades of elementary school and children education in municipal schools of metropolitan region of Campinas. The PROESF was organized by University of Campinas (UNICAMP) and remained from 2002 to 2005 graduated about 1600 teachers. The objetives of this course was provide pedagogy formation to teachers in activity in elementary schools and children schools from municipalities of this region. The course also intended to improve the quality of the education and teachers formation. At the final part of course, the teachers had to elaborating a memorial of formation. These materials can be accessed on the website of UNICAMP. The contribution of these memorial of formations can help to think about the teachers formation. This study was a qualitative research from these materials for 2008, and the objective is to identify the marks the formation perceived by these teachers and contributions for them formation. It is understood by marks the formation school memories significant for this group of teachers, stressing the points of what the academic formation contributes for the teacher in day-to-day in the school and what life in the classroom as a teacher marked the teaching practice. After reading the memorials I saw the marks, socialize my memorial, in which one perceives the same brands, presenting a reflection from the living

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Delivering to the customers a product or service with the expected quality associated to the huge competitiveness that exists in the market nowadays, has been making organizations increasingly focus on quality planning using techniques which are directed towards the continuous improvement process and production optimization. Thus, this paper aims to improve a machining process using the techniques of experimental design to the optimization and this also includes the analysis of the measurement system. For this purpose, the alloy Nimonic 80A, a nickel base superalloy, was used in the process due to its widespread use for high temperatures, applying this study the robust method proposed by Genichi Taguchi, determining the influence of the factors considered input variables, cutting speed, feed rate, depth of cut, type of tool, lubrication, and material hardness, in the output or response variable, surface roughness, concluding with the use of Taguchi orthogonal array L16 and by analysis of ANOVA that the factor feed rate is significant and offers greater effect on the response variable studied, should be set to 0,12mm/rev. Moreover, the factor type of tool has more influence on the process when compared to other factors, being CP250 the one more suitable to the process. Lastly, the interaction feed rate x cutting speed provides greater significance in the process regarding to surface roughness variable, being the best match between them 0,12mm/rev to the feed rate and 90m/min to the cutting speed. In order to evaluate the measurement system, it was applied the repeatability and reproducibility method (R&R), through which we saw that the system needs improvement (R & R = 88.04% >>> 30%) as the value found in the study was well above compared to the one that classifies the system as inappropriate

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This work seeks to explain the historical perspective of the building temporal western, showing the concepts of morphogenesis and morphodynamics as contemporary representations of geographical science for the synthesis forged about time. In this sense, it is the perspective of time in the Middle Ages, its implications and social substantiality, as interposed to time erected by the rise of a merchant class in Europe, we seek to present the social conception of this category in the West, stating that this not constituted as a supra-social element, but built by the organization itself and internal contradiction of European society. Finally, we saw the delineations drawn by geography, set in propositions about the dynamics of nature and society, such being the latest concepts in terms of the logic of assimilation weather prevailing. For this, we use literature review and comparison of temporal models at different times for the delineation of the contours of the research... (Complete abstract click electronic access below)

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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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Pós-graduação em Educação - FCT

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In this paper we deal with the one-dimensional integer cutting stock problem, which consists of cutting a set of available objects in stock in order to produce ordered smaller items in such a way as to optimize a given objective function, which in this paper is composed of three different objectives: minimization of the number of objects to be cut (raw material), minimization of the number of different cutting patterns (setup time), minimization of the number of saw cycles (optimization of the saw productivity). For solving this complex problem we adopt a multiobjective approach in which we adapt, for the problem studied, a symbiotic genetic algorithm proposed in the literature. Some theoretical and computational results are presented.

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Pós-graduação em Engenharia Mecânica - FEG

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Pós-graduação em Ciências Sociais - FCLAR

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Pós-graduação em História - FCHS

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Pós-graduação em Biociências e Biotecnologia Aplicadas à Farmácia - FCFAR

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