957 resultados para ênfase
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
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This study focused object a steam generation system, steam distribution and condensate return a textile plant located in Rio Grande do Norte. The work was based on the following objectives: Knowing the use of saturated water vapor in the dyeing and finishing processes in a textile plant; To study the various aspects of a steam distribution system to identify the ways in which energy losses occur; Obtain quantitative information of the main loss in steam generation system and steam distribution and to measure the losses, water and steam system; Using the flash steam as a means of cost reduction. For it was made use of the calculation of financial gains made in their respective improvements. As a database for the development of working registers are used in industrial processes, data from utility systems, laboratory data analysis and on-line analyzers, covering the period 2013. Using the principles set conservation laws mass and energy, those data showed that the loss of water and energy in the steam system are significant and that the environmental and economic gains to be obtained with improvement actions are quite significant. Based on the data and results suggest that future studies deem the continuity approach to steam generation systems, distribution and mainly condensate return.
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A practical approach to estimate rock thermal conductivities is to use rock models based just on the observed or expected rock mineral content. In this study, we evaluate the performances of the Krischer and Esdorn (KE), Hashin and Shtrikman (HS), classic Maxwell (CM), Maxwell-Wiener (MW), and geometric mean (GM) models in reproducing the measures of thermal conductivity of crystalline rocks.We used 1,105 samples of igneous and metamorphic rocks collected in outcroppings of the Borborema Province, Northeastern Brazil. Both thermal conductivity and petrographic modal analysis (percent volumes of quartz, K-feldspar, plagioclase, and sum of mafic minerals) were done. We divided the rocks into two groups: (a) igneous and ortho-derived (or meta-igneous) rocks and (b) metasedimentary rocks. The group of igneous and ortho-derived rocks (939 samples) covers most the lithologies de_ned in the Streckeisen diagram, with higher concentrations in the fields of granite, granodiorite, and tonalite. In the group of metasedimentary rocks (166 samples), it were sampled representative lithologies, usually of low to medium metamorphic grade. We treat the problem of reproducing the measured values of rock conductivity as an inverse problem where, besides the conductivity measurements, the volume fractions of the constituent minerals are known and the effective conductivities of the constituent minerals and model parameters are unknown. The key idea was to identify the model (and its associated estimates of effective mineral conductivities and parameters) that better reproduces the measures of rock conductivity. We evaluate the model performances by the quantity that is equal to the percentage of number of rock samples which estimated conductivities honor the measured conductivities within the tolerance of 15%. In general, for all models, the performances were quite inferior for the metasedimentary rocks (34% < < 65%) as compared with the igneous and ortho-derived rocks (51% < < 70%). For igneous and ortho-derived rocks, all model performances were very similar ( = 70%), except the GM-model that presented a poor performance (51% < < 65%); the KE and HS-models ( = 70%) were slightly superior than the CM and MW-models ( = 67%). The quartz content is the dominant factor in explaining the rock conductivity for igneous and ortho-derived rocks; in particular, using the MW-model the solution is in practice vi UFRN/CCET– Dissertação de mestrado the series association of the quartz content. On the other hand, for metasedimentary rocks, model performances were different and the performance of the KEmodel ( = 65%) was quite superior than the HS ( = 53%), CM (34% < < 42%), MW ( = 40%), and GM (35% < < 42%). The estimated effective mineral conductivities are stable for perturbations both in the rock conductivity measures and in the quartz volume fraction. The fact that the metasedimentary rocks are richer in platy-minerals explains partially the poor model performances, because both the high thermal anisotropy of biotite (one of the most common platy-mineral) and the difficulty in obtaining polished surfaces for measurement coupling when platyminerals are present. Independently of the rock type, both very low and very high values of rock conductivities are hardly explained by rock models based just on rock mineral content.
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This dissertation analyses the Brazilian Supreme Court’s judgement in the Non-compliance Action of the Fundamental Precept 132/RJ and in the Direct Action of Unconstitutionality 4277/DF, which created in the country the same-sex civil union. In This decision, the STF interpreted according to the constitution Article 1.723 of the Civil Code, invoking several fundamentals reaffirmed in the Constitution. From all these laws invoked by the Supreme Court to support the pretorian creation, the content of consitutional Law regarding equality is the only that corresponds, and it is sufficient to evidence the necessity of the creation, by legislator, of the institute for civil rights, since the Constitution forbids distinctions that is not expressly provided for in the Constitution (Art. 3º, IV, of Federal Constitution). In this way, Article 226, § 3º is not an exception capable of satisfying the condition of the consitutional foresight because although it protect, according its content only the civil union “between the man and the woman”, it is not able to forbid the creation, by legislator, of another kinds of families, including the same-sex civil union. As such, the reasoning, now legitimate according to the legislator, is not support the creation of institute by Constitutional Court, because the Court may enforce the Law, interpreting in the purviews allowed by the legal text and its constitutionality. In regard to the civil union of individuos of the same sex, the Court could not deduce that such union was implied by Law, like the interpretation according to the Constitution given by judges, on grounds of semantic purviews of the words man and woman, existents in both articles. The Court could not created it either, exceeding the legal system role. So, upon the institute creation, the STF, exceeded two limits: the interpretation and Law enforcement.
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This paper evaluate the performance of a Wastewater Treatment Plant (WWTP) in sequential batch activated sludge modality with tertiary treatment step, located in high temperature region. It also presents the analysis of organic matter’s removal and the evaluation of sludge sedimentation conditions through reactors in bench scale, fed with different substrate’s and biomass’ concentrations, from the WWTP in study. The results showed high efficiency and stability of the treatment process using Sequential Batch Reactors for domestic sewage, even with sudden changes of organic and hydraulic load, reaching more than 90% of efficiency in the removal of biodegradable organic matter. The removal of organic matter and sedimentation tests in bench reactors showed the good performance in respect of the organic matter’s removal, however, the high concentration of micro-organism results in a lower sludge sedimentation rate, which can compromise the quality of the final effluent. The relation Food/Microorganism in the conditions of the WWTP’s current operation showed a value of 0.06 gCOD/gVSS.d. and zonal sedimentation velocity of 0.59 m/h, the great ratio of the concentration of the substrate by biomass concentration, which obtained the maximum operational efficiency, showed a value of 0.09 gCOD/gVSS.d. and zonal sedimentation velocity of 1.4 m/h.
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This paper evaluate the performance of a Wastewater Treatment Plant (WWTP) in sequential batch activated sludge modality with tertiary treatment step, located in high temperature region. It also presents the analysis of organic matter’s removal and the evaluation of sludge sedimentation conditions through reactors in bench scale, fed with different substrate’s and biomass’ concentrations, from the WWTP in study. The results showed high efficiency and stability of the treatment process using Sequential Batch Reactors for domestic sewage, even with sudden changes of organic and hydraulic load, reaching more than 90% of efficiency in the removal of biodegradable organic matter. The removal of organic matter and sedimentation tests in bench reactors showed the good performance in respect of the organic matter’s removal, however, the high concentration of micro-organism results in a lower sludge sedimentation rate, which can compromise the quality of the final effluent. The relation Food/Microorganism in the conditions of the WWTP’s current operation showed a value of 0.06 gCOD/gVSS.d. and zonal sedimentation velocity of 0.59 m/h, the great ratio of the concentration of the substrate by biomass concentration, which obtained the maximum operational efficiency, showed a value of 0.09 gCOD/gVSS.d. and zonal sedimentation velocity of 1.4 m/h.
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A tecnologia democratizou o acesso à informação, a competitividade das empresas do século XXI cada dia mais se baseia em conhecimento e as gestões das ações da administração pública ampliam a busca por um sistema coordenado, preocupado com a gestão eficiente que possa maximizar o retorno social, levando-se em consideração os direitos humanos fundamentais na esfera das relações informáticas. A administração pública avança em seus processos de aproximação com a sociedade, pautando-se cada dia mais nos benefícios proporcionados pela evolução dos processos de Tecnologia da Informação e Comunicação (TICs), os serviços disponibilizados pelo governo eletrônico vêm ganhando espaço na vida da população (G2C). Diante desta evolução os aspectos de acessibilidade são uma diretriz clara e o Decreto Lei nº 5.296, define como barreiras nas comunicações e informações “qualquer entrave ou obstáculo que dificulte ou impossibilite a expressão ou o recebimento de mensagens por intermédio dos dispositivos, meios ou sistemas de comunicação, sejam ou não de massa, bem como aqueles que dificultem ou impossibilitem o acesso à informação; “ (BRASIL 2004). Após mais de 10 anos de promulgação da lei de Acessibilidade, é evidente que a qualidade dos serviços prestados pelo governo eletrônico só será efetiva se o instrumento de comunicação utilizado for realmente o facilitador da interação entre o cidadão e o governo, sem distinção do público utilizador de tais serviços. Esta pesquisa pretende avaliar aspectos de acessibilidade dos principais portais públicos brasileiros, sob a ótica de pessoas com limitação visual, avaliando ações, atividades e iniciativas conforme a abordagem da Engenharia Semiótica em prol das tecnologias assistivas de inclusão, permitindo a recomendação de requisitos para a construção de Portais Web Acessíveis em Multiplataforma, favorecendo a inclusão digital e maior independência dos mesmos.
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Considerando a importância da escola na constituição do sujeito enquanto ser social, busca-se, nesta dissertação, perceber a realidade da educação sob o reflexo desta no contexto de uma determinada escola, visando apreender o cenário atualmente existente, em especial, na formação docente, tendo por objetivo geral, a verificação da importância dada pelos docentes à incorporação dos valores humanos em sala de aula, com ênfase no respeito às diferenças e na responsabilidade das escolhas. Para tanto, atribui-se como objetivos específicos a identificação no campo teórico das possíveis articulações entre os conceitos de: valores humanos, respeito às diferenças e escolhas e a verificação, nas Diretrizes Curriculares da Educação Básica/2013, de como os conceitos de valores humanos, respeito às diferenças e escolhas estão retratadas e articuladas, destacando os conceitos que, no caso em estudo, estão sendo contextualizados nas ações docentes. Com este enfoque, a pesquisa de campo levantou dados por meio de questionário com perguntas de resposta aberta, aplicado no corpo docente da instituição em estudo, sendo as respostas transcritas, seu conteúdo analisado e os resultados representados graficamente.
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The building envelope is the principal mean of interaction between indoors and environment, with direct influence on thermal and energy performance of the building. By intervening in the envelope, with the proposal of specific architectural elements, it is possible to promote the use of passive strategies of conditioning, such as natural ventilation. The cross ventilation is recommended by the NBR 15220-3 as the bioclimatic main strategy for the hot and humid climate of Natal/RN, offering among other benefits, the thermal comfort of occupants. The analysis tools of natural ventilation, on the other hand, cover a variety of techniques, from the simplified calculation methods to computer fluid dynamics, whose limitations are discussed in several papers, but without detailing the problems encountered. In this sense, the present study aims to evaluate the potential of wind catchers, envelope elements used to increase natural ventilation in the building, through CFD simplified simulation. Moreover, it seeks to quantify the limitations encountered during the analysis. For this, the procedure adopted to evaluate the elements implementation and efficiency was the CFD simulation, abbreviation for Computer Fluid Dynamics, with the software DesignBuilder CFD. It was defined a base case, where wind catchers were added with various settings, to compare them with each other and appreciate the differences in flows and air speeds encountered. Initially there has been done sensitivity tests for familiarization with the software and observe simulation patterns, mapping the settings used and simulation time for each case simulated. The results show the limitations encountered during the simulation process, as well as an overview of the efficiency and potential of wind catchers, with the increase of ventilation with the use of catchers, differences in air flow patterns and significant increase in air speeds indoors, besides changes found due to different element geometries. It is considered that the software used can help designers during preliminary analysis in the early stages of design
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Standardization and sustainability: these two apparently antagonistic words find the challenge of uniting in a flexible architectonic proposal. This was the idea that motivated the proposal of this assignment, whose appearing is bound up with the necessity of thinking about standardized spaces that attend on functional criterias and environmental sustainability, in reply to an existing real demand. The assignment consists of an architectonic proposal for a flexible standard of a Basic Unit of Health for the bioclimatic zone 7 of RN (UBS RN-7), with emphasis in the environmental sustainability. The project contemplates innumerable involved variables, such as: obedience to the current law of the Health Ministry for the UBSs; formal/aesthetic aspects; criterias of expansiveness of the UBS I for the UBS II; relative aspects to the constructive rationality and, mainly, sustainability aspects. With the intention to unite the variables and, also, glimpsing a proposal that could reach a good functional performance, aesthetic, of environment comfort and energetic efficiency, it was also necessary to consider concepts about the flexibility of the envelopment. The elaboration of the architecture first draft was based on bibliographical research, conceptual studies and references, elaboration of the architectonic program and the draft development for the UBS port I and the UBS port II. To the end, an implantation data sheet for the project is proposed for the UBS standard project, where strategies of thermal isolation, shadowing and thermal inertia are adopted and combined to three possible types of lot, resulting in 24 possibilities of implantation
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This research covers the topic of social housing and its relation to thermal comfort, so applied to an architectural and urban intervention in land situated in central urban area of Macaíba/RN, Brazil. Reflecting on the role of design and use of alternative building materials in the search for better performance is one of its main goals. The hypothesis is that by changing design parameters and choice of materials, it is possible to achieve better thermal performance results. Thus, we performed computer simulations of thermal performance and natural ventilation using computational fluid dynamics or CFD (Computational Fluid Dynamics). The presentation of the thermal simulation followed the methodology proposed in the dissertation Negreiros (2010), which aims to find the percentage of the amount of hours of comfort obtained throughout the year, while data analysis was made of natural ventilation from images generated by the images extracted from the CFD. From model building designed, was fitted an analytical framework that results in a comparison between three different proposals for dwellings housing model, which is evaluated the question of the thermal performance of buildings, and also deals with the spatial variables design, construction materials and costs. It is concluded that the final report confirmed the general hypotheses set at the start of the study, it was possible to quantify the results and identify the importance of design and construction materials are equivalent, and that, if combined, lead to gains in thermal performance potential.
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A presente dissertação de mestrado teve como fenômeno de estudo a Ênfase em Gestão do Patrimônio Socioambiental do curso de História Bacharelado da Universidade Federal do Rio Grande – FURG, buscando compreender o processo de constituição e desenvolvimento desta Ênfase e suas articulações com a Educação Ambiental. Para tanto, foram elencadas três hipóteses: (a) a Ênfase em Gestão do Patrimônio Socioambiental do curso de Bacharelado em História da FURG não é estruturada e nem desenvolvida a partir das emergências da crise estrutural da qual a crise ambiental é um aspecto latente; (b) os saberes desenvolvidos na Ênfase não possibilitam que o egresso desenvolva a criticidade e a formação necessária para o cumprimento de sua função socioambiental; (c) a Educação Ambiental desenvolvida na Ênfase em Gestão do Patrimônio Socioambiental do curso de História – Bacharelado da Universidade Federal do Rio Grande – FURG não é expressão de uma ciência que se pretenda a serviço da classe trabalhadora e que se proponha a encarar os desafios das questões impostas pela crise ambiental. Em decorrência destas, foi desenvolvido um objetivo geral e três objetivos específicos, sendo eles: (a) Entender as condições sociais de crise ambiental em meio as quais surge a necessidade de gestores do patrimônio socioambiental; (b) Analisar os aspectos teóricos do campo da Educação Ambiental e a compreensão de ciência presentes na formação dos gestores do patrimônio socioambiental; (c) Identificar, no Projeto Pedagógico do curso de História Bacharelado, os aspectos políticos que demonstrem a função social do egresso. Ainda no sentido de atender ao objetivo geral foram organizadas quatro questões de pesquisa, a saber: (a) Quais as emergências da necessidade de criação da Ênfase em Gestão do Patrimônio Socioambiental no curso de História - Bacharelado da Universidade Federal do Rio Grande - FURG? (b) Que perspectiva de Educação Ambiental tem os professores da Ênfase em Gestão do Patrimônio Socioambiental do curso de História - Bacharelado da Universidade Federal do Rio Grande - FURG? (c) Que compreensão de ciência e de Educação Ambiental está vinculada à formação dos egressos da Ênfase em Gestão do Patrimônio Socioambiental do curso de História - Bacharelado da Universidade Federal do Rio Grande - FURG? (d) Quais saberes são fundamentais na formação dos gestores do patrimônio socioambiental para que compreendam os fundamentos da crise que faz emergir a necessidade da função social de tal ênfase? Nesta pesquisa foram utilizados, prioritariamente, os referenciais teóricos e epistemológicos com vinculação à compreensão de mundo marxista. Após o processo de revisão bibliográfica foram desenvolvidas entrevistas semi-estruturadas com sete professores atuantes na ênfase em estudo. Na sequência, para apreciação das informações, foi utilizado o referencial metodológico da Análise de Conteúdo de Laurence Bardin. Concluiu-se no processo de pesquisa que a ênfase se relaciona com a oferta de novas possibilidades de atuação profissional do historiador gestor. Bem como os saberes desenvolvidos na ênfase possibilitam parcialmente a constituição da criticidade dos egressos. Por fim, a Educação Ambiental desenvolvida na ênfase não pode, em sua totalidade, estar a serviço da classe trabalhadora, pois está circunscrita, no presente momento histórico, aos limites do Capital.
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This paper presents a differential approach of financial mathematics developed in high school, focusing on financial education. We seek through the insertion of texts, analysis of some financial products and by the interpretation of problems to contribute to the financial training of students. Aiming to make financial mathematics more attractive and accessible to the day-today, there are available for studies some practical tools like the citizen calculator which are available for computers and mobile phones. As well as spreadsheets and software Geogebra, that allow you to compare and analyze the financial costs of consortia, financing and financial applications,in addition to being allied in the preparation and control of personal and family budget. By applying the teaching sequence proposed in a nocturnal class of high school, we realized some difficulties that have limited the financial learning of math concepts.Yet identified progress regarding the financial education of students. These observations were made through qualitative and quantitative analysis from notes in the field diary and also answers given by students in specific form.
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O presente trabalho traz uma analise exploratória a cerca da situação do setor de construção civil e seu impacto ambiental, assim como, o problema da falta de gestão adequada, que possibilite através de politicas públicas e instrumentos econômicos, formas sustentáveis de lidar com os resíduos gerados em todo território nacional. Analisou-se o Plano Nacional de Resíduos Sólidos (PNRS), elaborado para nortear os municípios brasileiros na adequação da Politica Nacional dos Resíduos Sólidos. O PNRS expõe um histórico da situação dos resíduos, e apresenta alternativas especificas para corrigir as externalidades geradas por sua disposição indiscriminada, além de propor metas de gestão eficiente, e alertar quanto as punições estabelecidas pelo não cumprimento da Lei 12.305, que entrou em vigor no dia 02 de agosto de 2010, dando um prazo de quatro anos para que os municípios encontrassem maneiras de descartar de forma correta seus resíduos sólidos, dentre outras abordagens. Também foi realizado levantamento bibliográfico com uso de conceitos microeconômicos envolvendo externalidades, pelo qual se podem notar as diferentes formas negativas com que o setor impacta o meio ambiente.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Departamento de Saúde Coletiva, Programa de Pós-Graduação em Saúde Coletiva, 2015.