1000 resultados para tecnologia ambiental
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The objective of this study was to evaluate environmental impacts on the Ribeirão Preto basin in order to define the most degraded areas and their causes and to propose solutions and management strategies for them. An impacts indicator questionnaire was designed, that allowed us to establish a direct relationship between reactions achieved and environmental factors by attributing value to some impacting parameters obtained by simple visualization in the field. The questionnaire was applied at 22 points, based on the influence area of the sub-basin and variability in land use. It was determined that the main environmental impacts that affect the basin are in nature effluent wastewater released into water bodies, the disposal of waste and deforestation. These factors were mainly noticed near to Ribeirão Preto city (State of São Paulo), the most populated region. Such information provides subsidies necessary to environmental management in this basin to decreasing environmental degradation. Among the management strategies suggested, it is possible to highlight that related to the accomplishment of environmental legislation, recuperation of degraded areas and adequate treatment and disposal of effluents.
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The main purpose of this article is to relate two among the most important themes of the current organizational dynamic: organizational culture, innovation and environmental management. Great part of the literature about environmental management and environmental innovation refers to organizational culture as the most arduous wall or the most significant element to develop effective practices of business environmental management. However, relationship among such concepts is, many times, superficial or camouflaging the necessary analytic depth. To solve this challenge, this article integrates the levels of the organizational culture (workmanships, values and presupposed unconscious), the typologies of environmental innovation (total productivity of resources, innovations for the segregation of materials and articulation of bio-systems), and the environmental technologies (end-of-pipe, environmental measurement, pollution prevention and zero-impact technology). Recommendations and challenges for the continuity of this research are registered.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Ciências Cartográficas - FCT
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Esta tese tem como tema principal o discurso ambiental local. Trata-se de uma proposta de análise, que pode ser aplicada a este tipo de discurso em qualquer localidade, e um estudo de caso, que aplicou a análise proposta na tese. O objetivo geral desta pesquisa foi analisar a informação local sobre meio ambiente veiculada por meio dos discursos jornalístico, político e empresarial, estabelecendo relações históricas, sociais e ideológicas do discurso ambiental que permeiam as três áreas em questão. A metodologia incluiu três fases: pesquisa bibliográfica e revisão de literatura sobre os principais conceitos levantados no trabalho; levantamento de discursos locais disponíveis na mídia para análise no estudo de caso; análise dos discursos a partir de protocolo elaborado com base na Análise do Discurso de linha francesa. O estudo de caso traz a análise do discurso ambiental no município de Frutal-MG, onde hoje estão em andamento várias pesquisas e projetos na área ambiental. A principal conclusão do trabalho confirma a hipótese da pesquisa de que a informação ambiental fruto dos discursos político, jornalístico e empresarial em âmbito local tem caráter predominantemente situacional, mercadológico e propagandístico, pouco focada em conscientizar e educar e com ênfase em interesses comerciais e eleitorais e na resolução de problemas emergenciais.
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O sistema microPET/CT é um importante equipamento utilizado nas pesquisas de imagem diagnóstica em pequenos animais. O radiofármaco mais usado nesta tecnologia é o fluordeoxiglicose marcado com flúor-18. Este estudo tem como objetivo efetuar o controle radiológico no laboratório de pesquisa microPET/CT do Centro de Radiofarmácia do IPEN-CNEN/SP, de forma a satisfazer tanto as normas nacionais como as recomendações internacionais. O laboratório está classificado pela equipe de radioproteção da instalação como área supervisionada, nas quais embora não seja obrigatória a adoção de medidas específicas de proteção e segurança, devem ser submetidas reavaliações regulares das condições do ambiente de trabalho. Visando assegurar a proteção radiológica dos trabalhadores diretamente envolvidos no manuseio do equipamento, realizou-se o monitoramento do local de trabalho e a avaliação do controle de dose individual. Inicialmente foi feito o monitoramento pré-operacional, isto é, o levantamento radiométrico no laboratório. Além disso, mediu-se nível de radiação externa nas instalações do laboratório e suas adjacências, por meio da colocação de nove dosímetros termoluminescentes (TL) de CaSO4:Dy, em locais previamente selecionados. Os indivíduos ocupacionalmente expostos foram avaliados mensalmente por meio do uso de dosímetros TL posicionados no tórax e por medidas de corpo inteiro, tomadas a cada seis meses. O período do estudo foi de dois anos, com início em abril de 2014. Para o controle do microPET/CT realizou-se testes de desempenho de acordo com o protocolo padrão do equipamento e em conformidade com a norma desenvolvida pela força tarefa para estudos com PET em animais Animal PET Standard Task Force. O presente estudo permitiu demonstrar que os níveis de radiação das áreas (estimativas de dose ambiente e dose efetiva), assim como a blindagem do equipamento estão adequados de acordo com os limites da exposição ocupacional. Ressalta-se a importância de se seguir rigorosamente os princípios de radioproteção, já que se trata de pesquisas com fontes radioativas não seladas.
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As coberturas são um elemento fundamental na maioria dos edifícios. A evolução das técnicas e dos materiais, e das exigências funcionais e arquitetónicas, permitiram o apareci-mento das coberturas planas. A evolução dos materiais e das técnicas fez também com que se começasse a ter em conta os impactes ambientais que a produção dos materiais a utilizar nos edifícios provocam. Nesta dissertação, pretende-se fazer uma comparação do ciclo de vida de várias soluções de impermeabilização que se pode utilizar em coberturas planas, a nível ambiental. Existem atualmente declarações ambientais que auxiliam essa comparação, nomeadamente as Declarações Ambientais de Produto (DAP) individuais ou médias, que podem ser encontradas em bases de dados a nível Europeu. No entanto, também é possível encontrar dados relevan-tes para este tipo de estudos em bases de dados genéricas. Depois de recolhidos os dados disponíveis, fez-se uma avaliação dos impactes ambientais de cada solução de impermeabilização. Teve-se em conta as categorias de impacte ambiental definidas e posteriormente tratou-se os dados das três categorias com mais relevância ambiental. Após a recolha dos custos dos vários tipos de material de impermeabilização, fez-se ainda a avaliação económica. Nesta fase, foi necessário ter em conta que cada membrana apresenta uma durabilidade diferenciada, obrigando a substituições em momentos diferentes. Utilizou-se o Valor Atualizado Líquido para prever o custo do ciclo de vida das membranas, incluindo os custos de aquisição, de aplicação e de substituição. Para finalizar, conciliou-se as avaliações ambiental e económica. Na vertente ambiental, teve-se em consideração apenas as duas categorias de impacte mais importante. Utilizando uma análise multicritério, foi possível ordenar as soluções de impermeabilização para cada tipologia de cobertura plana. No caso de estudo, propôs-se a aplicação da solução com melhor desempenho ambiental e económico, para determinado tipo de cobertura.
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Relatório de estágio, Mestrado, Contabilidade e Fiscalidade, Instituto Politécnico de Santarém, Escola Superior de Gestão e Tecnologia, 2016
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O ambiente hospitalar é veículo de grande parte das infeções. Muitas destas infeções são originadas pelos microrganismos multirresistentes requerendo soluções de controlo difíceis e dispendiosas. Em Portugal, dos pacientes admitidos em hospitais, 5 a 10% adquirem infeções agudas que correspondem a cerca de 3 milhões de pacientes/ano. A existência de têxteis com eficiência antimicrobiana no contacto entre o doente e os profissionais de saúde poderia constituir uma barreira à propagação de tais microrganismos, com um relevante impacto na redução da infeção nosocomial. Alguns destes têxteis são descontaminados durante o seu ciclo de higienização (lençóis), outros são eliminados (batas e máscaras), acarretando custos substanciais e elevado impacto ambiental. Neste projeto pretende-se conjugar as necessidades atuais de têxteis hospitalares com alta eficiência antimicrobiana, sendo reutilizáveis e versáteis. Esta conjugação surge da necessidade de obter equipamento de proteção cirúrgica: a bata, a touca e a máscara. Todo este processo de estudo e criação, passa pela inserção da metodologia de design, desde a pesquisa das necessidades até à prototipagem, como também a validação do resultado obtido.
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This work describes the design process of a small recreational gated community in Pium, Nísia Floresta/RN, from concept to final design stages, with emphasis on low environmental impact, thermal comfort and the spatial quality of housing. The process consisted in a review of the literature and relevant standards, studies of design references and architectural programming. The project development was initially focused on the project’s feasibility, with the definition of the number of units, implantation, size and location of the dwellings and the common areas of the development. Two types of houses (four low rise and five duplex units) have been proposed in order to attend the premises of architectural programming. The conception of the architectural design began with the rooms’ zoning according to the lots. This resulted in the pre-selection of three alternatives that were evaluated in terms of spatial quality and environmental performance. The development of sketches focused on the envelope consistent with the bioclimatic guidelines and on the language of the compatible proposal with the lowest possible environmental impact of the building system, which resulted in the selection of the eucalyptus wood type. During the working drawings, the Quality Technical Regulation for the Level of Energy Efficiency Residential Buildings (RTQ -R) was adopted for the evaluation of the envelope, which resulted in "B" level of efficiency for the first case. After minor adjustments, mainly in frames, the efficiency level rose to "A", demonstrating that early project decisions contributed to the envelope energy performance. Besides the design of the two types of units, the final proposal of the gated community includes the design of the equipment for the common areas (entrance, multipurpose room and support and service sector), and the descriptive texts explaining the project and construction’s details.
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In recent years, the Universidade Federal do Rio Grande do Norte (UFRN) has come through an intense process of expansion, common for the Instituições Federais de Ensino Superior (IFES) - Higher Education Institutions – since the implantation of the Programa de Reestruturação e Expansão das Universidades Federais (REUNI), a program of restructuring and expansion of the federal universities. The incentives made at UFRN can be seen into the expansion of the fields of teaching, research and extension, besides hiring human resources and adaptation / expansion of physical spaces. The focus of the UFRN at the technological area through the project (REUNI) has reflected in a significant expansion of the physical structure of the Center of Technology, area where the section of classes IV remains being the main set of rooms that supports the demand of the courses in the technological area, in which highlights the lack of classrooms. In this sense, the work presented here, proposes an architectural blueprint for expanding the physical space of this sector, based in this main parameters: (i) the spatial flexibility that attends the varying numbers of students per class; (ii) the environmental comfort, using the parameters and guidelines constructive for the Bioclimatic Zone 8; (iii) the requirements contained in the rules of ABNT NBR 9050:2004, 9077:2001 and NBR NBR 15220-3:2003. The architectural proposal used the maximum template allowed by the UFRN Central Campus Master Plan, four floors, considering the existing building (area equal to 7413.95 m²) as the ground floor and the extension proposed distributed on three floors, with an area of around 2,535, 00 m² each, making up a total of 7602.65 m² of total area built
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Heavy metals are present in industrial waste. These metals can generate a large environmental impact contaminating water, soil and plants. The chemical action of heavy metals has attracted environmental interest. In this context, this study aimed to test t he performance of electrochemical technologies for removing and quantifying heavy metals. First ly , the electroanalytical technique of stripping voltammetry with glassy carbon electrode (GC) was standardized in order to use this method for the quantificatio n of metals during their removal by electrocoagulation process (EC). A nalytical curves were evaluated to obtain reliability of the determin ation and quantification of Cd 2+ and Pb 2+ separately or in a mixture. Meanwhile , EC process was developed using an el ectrochemical cell in a continuous flow (EFC) for removing Pb 2+ and Cd 2+ . The se experiments were performed using Al parallel plates with 10 cm of diameter ( 63.5 cm 2 ) . The optimization of conditions for removing Pb 2+ and Cd 2+ , dissolved in 2 L of solution at 151 L h - 1 , were studied by applying different values of current for 30 min. Cd 2+ and Pb 2+ concentrations were monitored during electrolysis using stripping voltammetry. The results showed that the removal of Pb 2 + was effective when the EC pro cess is used, obtaining removals of 98% in 30 min. This behavior is dependent on the applied current, which implies an increase in power consumption. From the results also verified that the stripping voltammetry technique is quite reliable deter mining Pb 2+ concentration , when compared with the measurements obtained by atomic absorption method (AA). In view of this, t he second objective of this study was to evaluate the removal of Cd 2+ and Pb 2+ (mixture solution) by EC . Removal efficiency increasing current was confirmed when 93% and 100% of Cd 2+ and Pb 2+ was removed after 30 min . The increase in the current promotes the oxidation of sacrificial electrodes, and consequently increased amount of coagulant, which influences the removal of heavy metals in solution. Adsortive voltammetry is a fast, reliable, economical and simple way to determine Cd 2+ and Pb 2+ during their removal. I t is more economical than those normally used, which require the use of toxic and expensive reagents. Our results demonstrated the potential use of electroanalytical techniques to monitor the course of environmental interventions. Thus, the application of the two techniques associated can be a reliable way to monitor environmental impacts due to the pollution of aquatic ecosystems by heavy metals.
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The present dissertation aims to analyze the evaluation process of environmental performance inside an organization from the building construction section of civil construction based on the NBR ISO 14031 guidelines, which provide orientation regarding the implementation of this project towards the internal organizational management. The theoretical research has addressed concepts and historical development of environmental management inside organizations, from the emergence of the first models to the strengthening of environmental management through the standardization of the Environmental Management System caused by the publication of ISO 14001. It has also addressed the evaluation of environmental performance, the NBR ISO 14031 (concepts, types of indicators of evaluation of environmental performance, the elaboration process of such indicators, as well as its use and evaluation by the high administration). The research has an applied character, with exploratory and descriptive goals, and a qualitative approach based on case study. The data collection will be made through questionnaires, interviews, and documental analysis. Through the present research project, one expects to learn the elements taken into consideration by the organization for the elaboration and selection of indicators; to identify which interested parties contribute in the aforementioned process; to discover which sources are taken into consideration by the organization while establishing its environmental performance goals; to learn how the different kinds of environmental indicators are handled by organizations on daily basis, considering the existence of interferences on the decision making process, whether or not the interested parties are integrated, and if there is an periodical evaluation of environmental performance and how it is handled. One also expects to identify the opportunities for improvement regarding the organization that is object of study.
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This thesis proposes environmental education as a strategy for the inclusion of sustainability in the academic education of higher level. The dentistry course has been the object of study, which is justified by the recognition of the need for reflection on environmental issues in the dental academia, initially based on professional experience of the author as a dental surgeon. The aim of this study is to investigate the scientific production of dentistry and its content related to environmental issues, in addition to expanding discussions and reflections on the need to insert environmental education as academic content. With the specific purpose of verifying the amount and analyze the content of scientific articles involving issues related to sustainability in dentistry, Chapter 01 presents research in leading journals portals available on the internet. Works were surveyed where sustainability and related issues were present and placed in a theoretical framework that analyzes the dental service inclusion in the dominant economic model. These procedures are intended to prove the hypothesis that the dental profession does not produce significant scientific content that relates the profession to the environment and sustainability. A literature review was conducted with the statement of dentistry changes from its origins to the front position to the dominant development model and exemplification of the deleterious effects of this model on the environment. In addition, there was a scientific research in journals portals available on the internet and investigated the amount and content of scientific articles involving issues related to sustainability in dentistry. Chapter 02 has the specific purpose of providing content to expand discussions and reflections on the need to insert environmental education in undergraduate courses in dentistry, such as insertion strategy into a new development model guided by sustainability. In this, students questionnaires were given the 8th dentistry course of the period the Federal University of Rio Grande do Norte (UFRN), to be understood environmental perception of learners and were obtained grants for proof of the thesis that environmental education applied dentistry has the potential to make people aware and willing to act practicing and propagating sustainability in their conduct. The overall results indicate little scientific production, as the research and work that relates to dentistry to sustainability and the issues related to the environment have not significantly been present in the syllabus of the undergraduate courses in dentistry, despite the interest shown by survey respondents When such issues are addressed. In this context, it is proposed fostering actions to environmental education, so that dental professionals are engaged in the construction of a new development model based on sustainability, as despite the environmental theme seems to be little explored in the academic and scientific world of dentistry, there interest from students and great potential multiplier for appropriate environmental behavior. After proving the hypothesis that the environment-related content are poorly explored in the academic and scientific world of dentistry, the main conclusions were recognizing the importance of environmental education as an interdisciplinary tool for environmental thematic approach in undergraduate courses dentistry, in addition to implementing this new pedagogical proposal in the professional practice of dentists, given their potential multiplier for environmental knowledge.
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Relatório de estágio, Mestrado, Contabilidade e Fiscalidade, Instituto Politécnico de Santarém, Escola Superior de Gestão e Tecnologia, 2016