999 resultados para Corpo - Temperatura


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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O objetivo deste trabalho é exibir corpos com infinitas ordens e exibir uma estrutura topológica ao conjunto das ordens de um corpo. Como cada ordem em um corpo está associada de modo único a um subgrupo de índice dois do grupo multiplicativo do corpo, ela fica associada, de modo natural, com uma funç˜ao de F \ {0} em {±1}, (onde F é o corpo em quest˜ao). Assim uma ordem é um elemento do produto cartesiano Πx∈F˙ {±1}x. Usando a topologia produto, será provado que o conjunto das ordens é um espaço booleano, isto é, um espaço topológico de Hausdorff, compacto e totalmente desconexo.

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Distribution networks are formed by long lines that carry electricity substations to homes and industries. These lines have associated impedance and depending on operating conditions of the network these impedances may vary. This paper provides a detailed analysis of the effects observed in studies of voltage drop, short circuit and electrical losses, when considered the drivers sequence impedances used in primary distribution network at different temperatures. Therefore, it is initially presented a calculation methodology and details the factors that influence the final values. The methodology presented tackles in a practical way the main factors that directly or indirectly influence the values of the impedances as an emblematic example and will be properly dealt with throughout the paper is the effect of temperature on the values of the sequence impedances. More specifically is dealt with the case of XLPE cables protected, by having a higher maximum operating temperature than the operating temperature of the network. The effects observed in the power flow generated when considering the impedance values at both temperatures were analyzed. The impedance drivers tend to increase with increasing temperature. Thus the impedance of the conductor XLPE protected will tend to be greater for the maximum operating temperature for which the operating temperature of the network, resulting in greater voltage drop and higher electrical losses

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In this work are discussed the main types of rivets, their characteristics and applicability within the Aeronautical Industry branch. Here are highlighted the solid rivets, showing off its layout, forms and limits of installation, that are required by aviation regulators. The riveting is a popular and simple procedure of fixing and joining two or more parts, and like any other manufacturing process is subject to process deviations that in some situations are beyond the limits of tolerance. One of these deviations is when the hole diameter exceeds the one proposed in project and which is limited by the rule of edge distance. The overall objective here is to study a possible solution to this problem: the installation of a rivet that has his diameter previously increased by compression. Observe the hole filling after riveting, detect the presence of cracks, discover the yield curve of the fasteners and their the crushing limits for failure prediction are tools used to verify this proposal. They demonstrate, at the end of study, the inefficiency of this procedure, with results that go against the safe fixing of parts in a structure

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Pós-graduação em Ciências Sociais - FFC

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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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For centuries have studied the man in a segmented manner, which today, even with the emergence of new forms of research, holistic, we see that the influence of centuries of construction of scientific knowledge has taken root in such a way that even now with new understandings about matter and its structure pointing to systemic relations, studies are still largely dichotomized by dividing body, mind and environment. This paper is a literature review on several sources of knowledge, seeking an interdisciplinary way in physics, chemistry, biology, psychology and physical education, relate the body, mind and their interactions with the environment, building a more current concept of body. The studies showed that the physical, cognitive, emotional, social and environmental aspects involve an interaction continues between human been with the world, which changes shapes, balances and transactions, and thus human behavior. So when we speak of the body should relate all this that makes us conscious organisms in constant internal and external dynamic with the universe

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This work deals with the stages of the process of renewal of a Notice of Inspection of Fire Department (AVCB) set of structural measures, technical and organizational integrated to ensure the building an optimum level of protection in the security segment fire and panic according to the laws of fire safety standards. The work presented all the literature about the process, their justifications to force deploy in a company to fire safety, the benefits that this standard offers, the facilities in a company that has a AVCB and the great importance in society, presents some examples where there contained the fire safety regulations and their unhappy outcomes, difficulties encountered, examples of how to proceed, step by step and the lesson that this process requires great care, dedication, professionals with the required knowledge and severity to completion

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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This article intends to contribute to a reflection about the relationship between the body, media and femininities, thus seeking to indicate some elements in order to clarify how the media currently interferes in this relationship, especially for the construction of female identity with the presentation of styles of femininity that are part of a particular body standard. In order to do so, we present a brief bibliographical debate on media issues, identity, discourse and power, electing as empirical choices examples of print media aimed at the female segment in Brazil and Barbie dolls.