999 resultados para Energia incorporada nos materiais de construção
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The so-called "residential tourism" came to intensify the previous occupation of the coastal zones, characterized by traditional beach houses, and brought significant consequences for their spatial configuration, and especially for its scenic value of the landscape. Although there is the intention to regulate the activities of enterprising groups by some legal instruments to control the use and occupation of land, and to contain some negative effects, the actions of government are still inefficient in trying to follow the implications on the landscape from the accelerated growth of the real estate and touristic sectors. Supported in the speech of economic development and income generation, public managers prioritize areas to attract tourists to the detriment of preserving important physical attributes of the natural environment that contribute significantly to the quality of life. The result can be noticed in the use of natural elements as one of the major components in the land valorization, and in the immediate attraction of investors and enterprising. Therefore, the objective of this work is to contribute to the debate on the landscape preservation a little detailed thematic in view of their relevance in the current context - by indicating subsidies to the creation of a methodology for the evaluation and protection of coastal zones that may assist the government in creating new instruments, and better prepare it in control of the occupation of these areas. For such, was followed two ways to analysis: the indirect method and the direct method. The first is grounded in the evaluation of landscape attributes, which is based on the work of Raquel Tardin (2008) and Eduardo Cuesta, Encarnacin Algarra and Isabel Pastor (2001). The second, based on the research of Leticia and Carlos Hardt (2010) and on the concepts of phenomenology - expressed by Antonio Christofoletti (1985) and Yi-Fu Tuan (1983) - considers the population perspective on the quality of the natural scenery. Developed through cartographic materials, photographic collections and quantitative tables, this dissertation utilized as a case study the beaches of Barra de Tabatinga and Camurupim, located in the city of Nsia Floresta/RN. Despite already being sighted spaces of advanced stage of landscape degradation in these locations, areas of remarkable scenic value can still be found, what reinforce the urgency in adopting preservationists actions. The absence of laws focused on the management and protection of the landscape singularities associated with the inefficiency of the government to invigilate the land occupation in coastal zones, encourage the excessive action of the real estate-tourism, and consequently make the government the main responsible for the environmental and landscape impacts in these areas - by its omission or by their connivance. Therefore, the legislation permeates this entire process and constitutes itself as the most effective way to guarantee the right to the landscape to present and future generations. Are also pointed some important considerations to build a methodology, especially concerning possibilities of improvements and adaptations of its applicability in each case
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Dissertao (mestrado)Universidade de Braslia, Faculdade de Tecnologia, Departamento de Engenharia Mecnica, 2016.
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Tese (doutorado)Universidade de Braslia, Faculdade de Tecnologia, Programa de Ps-Graduao em Geotecnia, 2016.
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This study has the purpose of investigating the term reader-creator , on the textual aspects of the dramatical works A Morte nos Olhos , A Memria Ferida and Na Outra Margem (2010) by Antonia Pereira Bezerra. In this sense, we propose an analysis of these works based on author‟s life experience as creative matter for a autofictional narrative, highlighting the relations between the autobiographical elements (LEJEUNE, 2008; DOSSE, 2009) and fictional elements in the construction of dramatic narratives. The theoretical analysis pervades the studies fields of Reception Aesthetics (ISER, 1996), memory (RICOUER, 2007) and narrative (RICOEUR, 2010), evidencing the relation between the author and the pursuit of her memories and life experiences, the matter to elaboration of writing. Then we intend thinking a reader-creator of herself, that at the same time she seeks in her memories the biographic aspects to her narrative, she converts this reality with the insertion of fictional elements from the imagination (SARTRE, 2008)
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The fast pyrolysis of lignocellulosic biomass is a thermochemical conversion process for production energy which have been very atratactive due to energetic use of its products: gas (CO, CO2, H2, CH4, etc.), liquid (bio-oil) and charcoal. The bio-oil is the main product of fast pyrolysis, and its final composition and characteristics is intrinsically related to quality of biomass (ash disposal, moisture, content of cellulose, hemicellulose and lignin) and efficiency removal of oxygen compounds that cause undesirable features such as increased viscosity, instability, corrosiveness and low calorific value. The oxygenates are originated in the conventional process of biomass pyrolysis, where the use of solid catalysts allows minimization of these products by improving the bio-oil quality. The present study aims to evaluate the products of catalytic pyrolysis of elephant grass (Pennisetum purpureum Schum) using solid catalysts as tungsten oxides, supported or not in mesoporous materials like MCM-41, derived silica from rice husk ash, aimed to reduce oxygenates produced in pyrolysis. The biomasss treatment by washing with heated water (CEL) or washing with acid solution (CELix) and application of tungsten catalysts on vapors from the pyrolysis process was designed to improve the pyrolysis products quality. Conventional and catalytic pyrolysis of biomass was performed in a micro-pyrolyzer, Py-5200, coupled to GC/MS. The synthesized catalysts were characterized by X ray diffraction, infrared spectroscopy, X ray fluorescence, temperature programmed reduction and thermogravimetric analysis. Kinetic studies applying the Flynn and Wall model were performed in order to evaluate the apparent activation energy of holoceluloce thermal decomposition on samples elephant grass (CE, CEL and CELix). The results show the effectiveness of the treatment process, reducing the ash content, and were also observed decrease in the apparent activation energy of these samples. The catalytic pyrolysis process converted most of the oxygenate componds in aromatics such as benzene, toluene, ethylbenzene, etc
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Aiming to reduce and reuse waste oil from oily sludge generated in large volumes by the oil industry, types of nanostructured materials Al-MCM-41 and Al-SBA-15, with ratios of Si / Al = 50, were synthesized , and calcined solids used as catalysts in the degradation of oily sludge thermocatalytic oil from oilfield Canto do Amaro, in the state of Rio Grande do Norte. Samples of nanostructured materials were characterized by thermogravimetric analysis (TG / DTG), X-ray diffraction (XRD), scanning electron microscopy (SEM), absorption spectroscopy in the infrared Fourier transform (FT-IR) and adsorption nitrogen (BET). The characterization showed that the synthesized materials resulted in a catalyst nanostructure, and ordered pore diameter and surface area according to existing literature. The oily sludge sample was characterized by determining the API gravity and sulfur content and SARA analysis (saturates, aromatics, resins and asphaltenes). The results showed a material equivalent to the average oil with API gravity of 26.1, a low sulfur content and considerable amount of resins and asphaltenes, presented above in the literature. The thermal and catalytic degradation of the oily sludge oil was performed from room temperature to 870 C in the ratios of heating of 5, 10 and 20 C min-1. The curves generated by TG / DTG showed a more accelerated degradation of oily sludge when it introduced the nanostructured materials. These results were confirmed by activation energy calculated by the method of Flynn-Wall, in the presence of catalysts reduced energy, in particular in the range of cracking, showing the process efficiency, mainly for extraction of lightweight materials of composition of oily sludge, such as diesel and gasoline
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Durante os ltimos 1O anos, em particular, tem-se assistido descoberta e desenvolvimento de materiais com propriedades nicas e potencialmente teis em vrios domnios da Cincia e Tecnologia. Quer seja na rea das Cincias Biomdicas e do Ambiente, na rea das Novas Tecnologias de Informao e Comunicao ou nas Novas Tecnologias relacionadas com sistemas de Converso e Armazenamento de Energia Elctrica, encontram-se inmeros exemplos de Novos Materiais com propriedades muito interessantes, e cujas aplicaes inovadoras podem revolucionar o nosso Mundo. O presente trabalho uma proposta de contextualizao e experimentao do tema "Materiais Electrocrmicos e Mecaelectroqumicos" no Programa de Qumica de 12 Ano, nomeadamente na terceira Unidade - Plsticos, Vidros e Novos Materiais. Neste, apresentada uma sub-unidade que possa integrar a unidade referida. Faz-se especial referncia s aplicaes dos polmeros condutores, que pela sua inovao e actualidade tomam a leccionao do tema mais apelativa, interessante e facilitadora de uma literacia cientfica. So apresentadas experincias laboratoriais demonstrativas e elucidativas do tema em questo. Como forma de apoiar a leccionao do referido tema, apresentada a proposta de uma animao grfica animada em Power Point. ABSTRACT: During the past 1O years, in particular, it has witnessed to the discovery and development of materials with unique properties and potentially useful in various fields of Science and Technology. There are numerous examples of new materials in different areas, such as Biomedical, Energy and Environmental Sciences and New information and Communication Technologies, with very interesting properties, and whose innovative applications can have an outstanding impact in our world. This dissertation is a proposal of contextualization and experimentation of theme "Electrochromic Materials and Electrochemical Artificial Muscles" in the Program of Chemistry, in 12th year, particularly in the third unit - Plastics, Glass and New Materials. lt will present a sub-unit that can integrate the unit above. The definitions and some applications of the Electrochromic Materials and Electrochemical Artificial Muscles are showed. Demonstrative and illustrative laboratory experiments of the theme are proposed. ln order to support the teaching of that subject, it is presented an animated graphical presentation in Power Point.
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Esta pesquisa objetiva compreender os diferentes mecanismos de construção do sentimento topoflico no sub-bairro de Amovila, de acordo com o tempo de moradia de seus moradores.Para isso, se investigou os marcos materiais e as imaterialidades imanentes do sub-bairro de Amovila, o qual faz parte do bairro de Vista-Alegre. O termo topofilia um neologismo criado por Yi-Fu Tuan e consiste no elo afetivo entre o indivduo e o seu lugar, que pode ser uma infinidade de possibilidades, como um objeto, um cmodo de uma casa, uma cidade ou um bairro. A metodologia consistiu na anlise e na comparao dos discursos dos moradores a partir de entrevistas exploratrias e semi-estruturadas.
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O presente artigo se baseia na alterao da paisagem provocada pela construção das barragens, tendo em vista a paisagem analisada de uma forma holstica. O objetivo principal relatar a perda do patrimnio material e principalmente patrimnio imaterial atrelado ao trao cultural das comunidades atingidas pelas barragens, para gerao de energia eltrica. Para tal utilizaremos da paisagem cultural, aqui entendida como as interaes dos povos que vivem com seu ambiente, ao qual o homem e a vida reproduzam marcas e atribuem valores de sua cultura, memria, religiosidade que nela esto caracterizadas no cotidiano dessas pessoas, a qual possui suas formas tradicionais de se ocuparem no territrio.A construção de grandes barragens provoca impactos sociais, ambientais e em patrimnios materiais e imateriais, onde os deslocamentos compulsrios dos povos que habitam as margens do rio provocam impactos nas populaes, onde esses povos possuem um pertencimento com aquela localidade, que compartilham de uma recproca sacralidade com o lugar ao qual vivem. No que diz respeito aos modos de criar, fazer e viver, se expressando nas suas prticas, representaes, conhecimentos e tcnicas, ou seja, os componentes dos processos genunos na arte e cincia, contribuindo para desenvolver a diversidade cultural e criatividade humana.
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Os desafios que catadores e catadoras de materiais reciclveis enfrentam no seu dia a dia j so inmeros e a introduo de tecnologias que queimam resduos slidos para captar energia significa outro fator que pe em risco a sobrevivncia desta populao. Seguindo a lgica da globalizao econmica, grandes empresas multinacionais de saneamento ambiental esto entrando no mercado da gesto de resduos slidos nos pases em desenvolvimento. Coleta, separao, transformao e venda de materiais reciclveis por grupos organizados de catadores geram trabalho e renda: trata-se de capital social e humano. Nos pases da Amrica Latina e da sia, em particular, milhares de pessoas dependem desse setor. Essa atividade oferece oportunidades para a incluso social com resgate da cidadania. A implantao de incineradores significa uma ameaa a estes postos de trabalho, sem mencionar os problemas ambientais gerados pelos gases e cinzas txicas eliminados durante o processo da queima. A presente pesquisa-ao utiliza mtodos participativos e analisa dados secundrios, tendo como objetivos desconstruir a lgica tecnocrata de gesto de resduos slidos e apontar a importncia do compromisso social e ambiental dos governantes e da sociedade com a coleta seletiva e a reciclagem, aumentando desta forma a sustentabilidade social, econmica e ecolgica.
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Prope discusso sobre o papel da educao a distncia e suas contribuies para a prtica profissional no Sistema nico de Sade SUS, utilizando quadros narrativos.
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Mdulo 3 do Curso de Especializao em Sade Mental, da UNA-SUS/UFMA, considera alguns marcos histricos relevantes para a construção do diagnstico psiquitrico, as formas de examinar sistematicamente o estado mental de um paciente, levando em conta, alguns fatores que, combinados, so indispensveis formulao do diagnstico.
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Atualmente no contexto da Estratgia Sade da Famlia (ESF), o acolhimento representa um importante dispositivo para a humanizao da ateno sade. Assim, o objetivo deste trabalho foi elaborar uma proposta de protocolo de acolhimento para a Unidade de Sade da Famlia de Pingo D'gua. O estudo partiu de uma reviso bibliogrfica narrativa, e os dados foram colhidos de livros, peridicos impressos, base de dados do Google e de artigos cientficos encontrados atravs de consulta eletrnica de materiais publicados nos ltimos dez anos na Biblioteca Virtual em Sade. Utilizou-se tambm dados secundrios levantados pelas Equipes de Sade da Famlia no perodo de janeiro de 2010 a maro de 2011. Os resultados demonstram os benefcios da utilizao do protocolo de acolhimento no processo de trabalho da Equipe de Sade de Pingo D'gua. Conclui-se que, o acolhimento uma instncia potente para a organizao do servio medida que vai ao encontro dos princpios do Sistema nico de Sade (SUS), e que um protocolo para efetivao do mesmo pode em muito contribuir para a qualidade da assistncia prestada aos usurios.
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The behaviour of Nafion polymeric membranes containing acid-base dyes, bromothymol blue (BB) and methyl violet (MV), were studied aiming at constructing an optical sensor for pH measurement. BB revealed to be inadequate for developing sensing phases due to the electrostatic repulsion between negative groups of their molecules and the negative charge of the sulfonate group of the Nafion, which causes leaching of the dye from the membrane. On the other hand, MV showed to be suitable due to the presence of positive groups in its structure. The membrane prepared from a methanolic solution whose Nafion/dye molar ratio was 20 presented the best analytical properties, changing its color from green to violet in the pH range from 0.6 to 3.0. The membrane can be prepared with good reproducibility, presenting durability of ca. 6 months and response time of 22 s, making possible its use for pH determination in flow analysis systems.
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Fundamental aspects of the conception and applications of ecomaterials, in particular porous materials in the perspective of green chemistry are discussed in this paper. General recommendations for description and classification of porous materials are reviewed briefly. By way of illustration, some case studies of materials design and applications in pollution detection and remediation are described. It is shown here how different materials developed by our groups, such as porous glasses, ecomaterials from biomass and anionic clays were programmed to perform specific functions. A discussion of the present and future of ecomaterials in green chemistry is presented along with important key goals.