905 resultados para materiais de construção e tipo de cobertura


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Increasingly, people searches for an efficient and economic way for transporting bulk materials. Transport through belts is now the most widely used mean for transporting bulk materials, used by companies from various sectors such as mining, quarrying, agribusiness, etc. There are many advantages of using a conveyor belt as compared to rail or by truck. Trucks needs a driver, have a high risk of accidents as well as a high cost for maintenance and as well as trains, after making the downloading of the material, return empty to the next load. The cost for the construction of a railway is very high, making it often impossible. The conveyor belt have a high cost of installation, but it works 24 hours a day, 365 days a year. The upper side of the belt is always loaded, the maintenance cost is average and the risk of accidents is low, causing it to be the ideal way to transport bulk materials. This monography aims to interest the reader about what is a conveyor belt, what are its main components and demonstrate the basic calculations for their sizing and selection of components. Throughout the work, scaled a belt conveyor for use in the mining sector, but the concepts demonstrated apply to the transport of any material

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Alguns estudiosos e pesquisadores nos últimos anos têm voltado atenção para a formação de professores, no que se refere sobretudo as questões dos saberes docentes, tentando, assim, compreender que saberes estão presentes na prática pedagógica. No âmbito desse processo e com o ingresso no PIBID (Programa Institucional de Bolsas de Iniciação à Docência), tive um contato mais próximo com a escola, especificamente com os professores em exercício. Assim algumas indagações surgiram sobre o fato dos estudantes apresentarem um tipo de saber (discursivo) e os professores outros (pragmático). Embora ambos possam compartilhar algumas experiências comuns vinculadas ao processo de escolarização, cada um fala de um lugar diferente. Isto aponta para outro questionamento: qual é o lugar que o estudante, os professores da escola e da universidade ocupam no campo da formação. A partir deste contexto, o presente trabalho abrange a formação dos professores, a prática docente e os saberes docentes. Dessa forma objetiva-se compreender como os estudantes da disciplina de estágio supervisionado na escola e os professores da escola constroem/constituem/apontam os saberes que são mobilizados na prática de ensino. Especificadamente se busca (a) identificar os saberes que são mobilizados por estudantes de Educação Física na construção dos Projetos de Ensino e da Prática de Ensino no estágio;(b) analisar a origem desses saberes, tomando como referência a elaboração do Projeto de Ensino, a Prática de Ensino na escola e as Experiências no processo de escolarização;(c) estabelecer relações, se possível entre a aquisição desses saberes e a identidade docente;(d) apontar a compreensão que os professores da escola que recebem estagiários têm sobre os saberes docentes.Trata-se de uma pesquisa qualitativa, descritiva, que utiliza como técnicas para a coleta, a entrevista e a fonte documental, tendo na análise do conteúdo a...

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The objective of this work was collect information of articles published previously and carry out a study about them, including contents and interesting stuff that bring growth regarding the construction residues utilization and demolition (RCD), that today provides many environmental impacts. The need of utilization of the RCD in Brazil and in the world earned bigger attention world speaking, therefore the industry of the civil construction is had as one of the biggest present residues output springs. For it present a point that can be applied the RCD, is discussed in that work the kinds and structures of floors, where are presented the layers and, finally, a short argument about the possible and economic feasabilities job of the residues recycled in some layers of the structure of floor

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The Companhia Energetica de Sao Paulo - CESP owns six hydroelectric dams in the state of São Paulo. The dams, both in its construction and in operation, cause some environmental impacts, most of them negatives, for example, the flooding in regions before not flooded, deviation of the river’s course, among others, bringing harm to flora and fauna of these environments. As a way to compensating these damages, the CESP has acquired a region that was influenced by Sérgio Motta Hydroelectric Plant Engineer, or Porto Primavera, and turned it into Reserva Particular do Patrimônio Natural Foz do Rio Aguapeí. By law it fits in a Conservation Unit, and thus should be contemplate for a management plan, ie, a multidisciplinary technical document which allows, simply, the practice of actions within and around in a sustainably way. This work aimed at developing a land cover map of the reserve for this plan can be made and executed more efficiently. Initially, the project included field visits and meetings with members of the CESP to be specified classes contained on the map. Later, we ran different types of classifications of multispectral images (TM / Landsat 5)... (Complete abstract click electronic access below)

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The large volume of waste generated by construction and demolition has become increasingly a matter of concern to society. The handling and disposal of RCD's to gain prominence as over the years intensified the requirements for a sustainable world. This paper presents the positive and negative factors that the management of construction and demolition waste can bring in the municipality of Guaratinguetá-SP. This study examines the methods used in waste management since he was not done any treatment to the present day. Presents comparative tables on the feasibility of installing a central crushing of inert waste and implementation of an inert waste landfill in the municipality of Guaratinguetá and Cachoeira Paulista. And yet the work being done by the city of Guaratinguetá reuse the material in class A in paving roads

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O desenvolvimento da moral na criança inicia-se muito cedo, na medida em que vivencia experiências sociomorais. Piaget observou num jogo infantil fases do desenvolvimento moral relativos à prática e a consciência da regra, a partir das quais é possível fazer uma analogia com toda a sociedade. A escola é um espaço privilegiado para manifestações de caráter eminentemente morais, podendo assim influenciar significativamente no desenvolvimento moral dos sujeitos. Uma prática comum nesse sentido é o estabelecimento de combinados de regras nas classes de Educação Infantil. Assim objetivou-se neste trabalho estudar como essa forma de construção de regras tem se constituído. Para tanto se realizaram observações sistemáticas em duas salas de aula em escolas públicas em um município do interior de São Paulo (em que se implantou o PROEPRE) e se aplicou questionário às professoras a fim de caracterizá-las enquanto sujeitos de pesquisa. Tais observações ocorreram entre fevereiro e maio de 2009, em momentos distintos da rotina de cada classe. Os dados coletados nos permitiram concluir que o tempo de experiência e formação dos sujeitos não se constituíram necessariamente em fatores relevantes para o tipo de trabalho desenvolvido com relação à construção de regras em suas salas de aula. Concluímos também que a maneira com que os professores conduziram a construção de regras com seus alunos não contribuiu significativamente para o desenvolvimento moral das crianças e para a superação da heteronomia e egocentrismo infantil segundo o referencial piagetiano

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As brincadeiras infantis fazem parte da vida de toda criança, seja na escola ou em casa. A partir desse tipo de atividade, a criança possui inúmeras possibilidades, como por exemplo, trabalhar com regras, mesmo inconscientemente, utilizar sua criatividade para criar situações diversas. Exemplo disso são as brincadeiras de faz-de-conta, onde a criança tem a possibilidade de ser quem ela quiser ou até mesmo, modificar o significado real de um determinado objeto, transformando-o em outro de acordo com seu desejo. Através do brinquedo, a criança exterioriza aquilo que ela interiorizou de sua cultura, de forma a representar o mundo em que vive. O presente estudo tem por objetivo discutir a importância das brincadeiras, para o desenvolvimento cognitivo e de linguagem da criança, levando em consideração o meio social em que vive. Onde, através de pesquisa bibliográfica será analisado a concepção de diferentes autores, que abordam essa temática e mostram que o ato de brincar deve fazer parte da infância, em benefício do desenvolvimento constante da criança

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Como todo fenômeno de massa, os acontecimentos esportivos são, atualmente, um dos preferidos da mídia, sobretudo por questões de ordem mercadológica ou simbólica, já que o esporte tem papel fundamental na construção de identidades e subjetividades. Tendo como base este fato, o objetivo desta pesquisa consistiu em identificar como a mídia esportiva refere-se ao atletismo, quando da veiculação de reportagens jornalísticas. Para tanto, foram coletadas reportagens do jornal “Folha de São Paulo”, mais especificamente, do caderno “Pequim/2008” num período de 15 dias antes dos Jogos Olímpicos de Pequim/2008, durante o seu desenvolvimento e 15 dias após o término desse evento, isto é, de 22/07/2008 a 08/09/2008. Nesse período, foram coletadas 49 edições desse jornal, nas quais analisamos 88 reportagens relacionadas ao atletismo. Em revisão bibliográfica e com base na Análise de Conteúdo foram identificadas as principais características dessas reportagens, além dos temas mais recorrentes (unidades de registro) e o contexto (unidades de contexto) de cada uma delas. Foram criados 5 blocos de categorias, a saber: 1. Breves notas informativas sobre o atletismo; 2. Curiosidades acerca do atletismo mundial; 3. Resultados obtidos nas provas do atletismo; 4. Preparação dos atletas e expectativa em relação ao desempenho e 5. Destaques do atletismo nos Jogos Olímpicos de Pequim. A descrição de cada um dos blocos de categorias favoreceu a exposição dos resultados, dentre os quais: a falta de informação que é dedicada ao atletismo pela mídia em períodos em que não ocorrem grandes competições esportivas, a ênfase dada por ela por ocasião de eventos de repercussão internacional e a atenção especial voltada aos atletas que estão no auge da carreira e que, de alguma forma, passam a ser reconhecidos...(Resumo completo, clicar acesso eletrônico abaixo)

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Due to greater productivity in the auto industry and the high competition in the current market, employees are required to perform repeated movements and often, with short intervals of rest. This daily exposure causes muscle tension and overloads occasional, thus creating problems and psychosocial stress. Currently companies are concerned with the welfare of the employee, where the main focus is product quality and life of the worker, thus justifying such a study. Therefore , this technical work to assist the master's thesis of graduate student Daniel Rodriguez , was developed with the objective is to analyze , develop, design and construct a coupled to a load cell device simulating a stitcher to be used in an industry the posts stapling upholstery of seats . Are the stages of design and construction detailed in this work and its positive results in relation to the technical part of the study

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This research aims to understand how students of Early Childhood Education (considering the range of 2-3 years) build the space - geometric notions from the interaction established with the school routine. The venue was a municipal school Miners Tietê, within the State of São Paulo. The interest in this research took place from two reasons: the first because of course taken “Mathematics in Early Childhood Education” and the second stemmed from my professional work in a school for early childhood education. This research is initially composed by bibliographic studies concerning the topic and was grounded in a qualitative interpretive approach, aiming to investigate the psychological process of building space - geometric notions in children. The procedures used in the initial research to collect data were interviews using the method of clinical type and Piagetian tests. Thus allows us to understand the construction of the geometric space by children in their topological, projective and Euclidean relations

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This work approaches the main eco-efficient techniques and materials that can be used to ensure the proper functioning of the habitat with the main objective of preserving energy and reducing the ecological impact. The harnessing of energy to run a house using materials in a correct way makes it possible to achieve the goals related to its rational use. So, the more consolidated techniques need to be studied separately to determine the global effect on housing. The results obtained, with the aid of standard NBR15220 ABNT, were a series of ecotécnicas that can be used in 8 relatively homogeneous zones. This study was made to create a public awareness of the current environmental problems that society is facing nowadays and the urgent need to practice responsible use of energy

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The construction industry is booming, and the federal government is heavily financially supporting public housing. This scenario is very favorable for the development of construction materials, especially low-cost construction. Thus, this study aims to develop a new class of unfired clay masonry bricks: GGBS stabilized bricks. Studies show that the ground granulated blast furnace slag, a material used as raw material in cement manufacture, can be used together with calcium oxide in soil stabilization for the manufacture of bricks. This study aims to test and identify the best parameters for the manufacture of unfired bricks, adapting its composition to the materials found in Brazil and identify the optimum curing conditions for our climate. So far preliminary studies were done to verify the technical feasibility of the material. Future studies should be done to ascertain the economic feasibility and environmental gains of such material

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This paper aims to present the design, development and construction of a reducer / multiplier speeds low cost, sturdy and easy operation. The beginning of the project was given to research on issues related to mechanisms and machine elements, and these theories of fundamental importance in the development of items of equipment which, together with the aid of AutoCAD software, enabled the construction of it. Parallel to the sizing of equipment, were also investigated and taken into account the costs of materials used in the project. Made to mount the reducer / multiplier speeds it was at the evidence through experiments involving the use of torque wrench, tachometer and weights, getting proven applicability in situations that are small or medium loads required

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The nickel superalloys are known as being a material with poor machinability, they have some properties like high hardness, good resistance at high temperature, tendency to weld with the tool material at high temperature, etc. In the aerospace, biomedical and petrochemical industry, are increasing the need to use materials that resist to aggressive process and environment. In these uses, it has increased the use of nickel-based superalloys like Inconel 718 and consequently the need to research new techniques and tools to improve the machinability of this material. For the superalloys and resistant alloys at high temperatures is considered that the difficulty in the machining regards to the combination of the relatively high cutting forces and high temperatures that grow during the machine process, causing deformation or breakage of the cutting tool. This work purpose is to develop the study of the machining of external cylindrical turning of the nickel based alloy Inconel 718, using ceramic tools, seeking the optimization of machining this alloy, looking to provide real productive increases without the need of investments in new production means. The machining test were accomplished using commercials hard metal tools and the results were compared each other to find the best tool and the best parameter. The conclusion is that the tool TNMG160408-23 -class 1005- was the better one, when used with the parameter 60_15_08

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In a supplier of building products were identified difficulties in communication between the Product Development area and other areas of the company that could spoil projects and processes. The process of product development is important in placing the company in the market, and through research and planning, design new products and seek to comply with the costumer in relation to deadlines, quality and cost-effective. The development of a product involves many areas in the company and communication is essential in this process. The goal of this study was to identify possible communication problems permeated by organizational culture and structure of project management working in the company. A survey was applied using a Likert scale in three different areas of the company, with questions including the topics: communication, culture and organizational structure of project management and subsequently conducted the median test and the Spearman test to analysis of responses. With the understanding and analysis of the survey it was confirmed the difficulties of communication between people and the areas of the company, besides there is an influence of the type of culture acting in the company and the current management structure of the project in a good performance of internal communication