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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Reis, A. H.; Miguel, A. F.;

    The worldwide scarcity of fossil fuels regarding primary energy demand together with growing environmental concerns have raised new challenges to the world economy, and led to changes in the energy paradigm. Industry, services, researchers, and the Academy are challenged to envisage new solutions through setting up new conversion processes, designing new power systems, and investigating and developing new energy sources and vectors. A broad and up-to-date views on flow systems, energy vectors, together with fuel cells, biomass, and energy recovery issues are covered in this collection. The Guest Editors are grateful to the authors who contributed to this special issue and to all colleagues who participated in the review process.

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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Repositório Científi...arrow_drop_down
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    Authors: Lima, Angélica Gomes; Silva, Ana Maria Mendes da; Soares, Cleir Elenir Coelho; Souza, Raquel Alves Xavier de; +1 Authors

    doi: 10.5216/ree.v12i3.6156A pele é um órgão externo e está sujeita a agressões diárias provocadas pela exposição solar. Os profissionais que exercem seu trabalho em ambientes externos estão sujeitos aos danos ocasionados pela exposição solar sem proteção, como os agentes comunitários de saúde e de combate a endemias. Nesse sentido, esse estudo teve como objetivo conhecer os hábitos de exposição solar de agentes comunitários de saúde e de combate a endemias que atuam no município de Ribeirão das Neves, Minas Gerais. Foi realizado um estudo exploratório, no ano de 2008 com a aplicação de um questionário semi-estruturado, com 7 agentes comunitários de saúde e 6 agentes de combate a endemias. Os resultados revelaram que a maior parte dos entrevistados expõe-se por mais de cinco horas diárias a radiação solar, sendo a totalidade em horário crítico; 46,17% não usam protetor solar e 23% associam métodos químicos e físicos e todos apresentaram algum agravo a pele em decorrência de sua atividade profissional. Os resultados apontam para a importância da criação e implementação de ações que motivem esses profissionais no uso de medidas de fotoproteção efetivas. Descritores: Radiação solar; Promoção da saúde; Saúde do Trabalhador. doi: 10.5216/ree.v12i3.6156La piel es un órgano externo y está sujeto a agresiones diarias provocadas por la exposición solar. Los profesionales que ejercen su trabajo en ambientes externos están sujetos a los daños causados por la exposición solar sin protección, como los agentes comunitarios de salud y de combate a las endemias. En ese sentido, ese estudio tuvo como objetivo conocer los hábitos de exposición solar de los agentes comunitarios de salud y de combate a las endemias que actúan en el municipio de Ribeirão das Neves, Minas Gerais. Fue realizado un estudio exploratorio en el año de 2008 con la aplicación de un cuestionario semiestructurado, con 7 agentes comunitarios de salud y 6 agentes de combate a las endemias. Los resultados revelaron que los entrevistados se exponen por más de cinco horas diarias a la radiación solar, siendo la totalidad en horario crítico; 46,17% no utilizan protector solar y 23% asocian métodos químicos y físicos y todos presentaron agravios a la piel resultantes de sus actividades profesionales. Los resultados apuntan para la importancia de la creación y implementación de acciones que motiven a esos profesionales a utilizar medidas eficaces de fotoprotección. Descriptores: Radiación solar; Promoción a la salud; Salud del trabajador. doi: 10.5216/ree.v12i3.6156 The skin is an external organ and is rateable to daily attack by sun exposure. Professionals who work in outdoor environments are at risk for occasional damage caused by sun exposure if unprotected, such as public health workers and endemic disease control workers. Therefore, this study aimed to discover the sun exposure habits of public health workers and endemic disease control workers who work in the municipality of Ribeirão das Neves, Minas Gerais. In 2008, an exploratory study was conducted using a semi-formal questionnaire with 7 public health workers and 6 endemic disease control workers. The results revealed that most part of those interviewed are exposed to sun radiation for more than five hours per day, all during the most critical exposure period; 46.17% do not use sun protection and 23% use chemical and physical methods and all displayed some kind of skin condition resulting from their professional activity. The results emphasize the importance of creating and implementing initiatives that motivate these professionals to use effective means of sun protection. Descriptors: Solar radiation; Health promotion; Worker Health.

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    Authors: Teixeira, Filipe Manuel Martins;

    Um nearly zero-energy building (nzeb) é um edifício que produz tanta ou mais energia quanto a que consome num ano típico. As medidas de eficiência assumem um papel de tal forma preponderante na redução das necessidades de consumo que, através da captação de energias renováveis, se torna possível alcançar um balanço de energia zero. Actualmente, a abordagem mais comum é usar a rede pública como fonte e dissipador dessa energia eléctrica. O conceito tem-se expandido de forma notória, dentro ou fora do território nacional, sendo hoje possível aprendermos os conceitos inerentes aos edifícios de energia zero a partir de importantes projectos, como é exemplo disso o edifício Solar XXI em Lisboa. Este documento procura abordar o tema de forma prática e acessível, do ponto de vista das preocupações da arquitectura. Para isso, contribui um caso de estudo que pretende compor uma lógica integradora de várias estratégias determinantes no comportamento térmico do edifício, com intenções de arquitetura contemporânea que se querem fiéis aos seus princípios. A nearly zero-energy building (nzeb) is a sort of building that produces as much or more energy than it consumes in an average year. The efficiency measures play an important role to reduce energy consumption such that the balance of energy needs can be supplied with renewable technologies in order to reach a zero energy result. Today’s approach is usually to use the public grid as a source and a way to dissipate this electric energy. This concept has been spreading in a notorious way in and outside our national territory. With this intention, it is possible today to learn the underlying concepts of the energy zero buildings through several projects, such as the Solar XXI building in Lisbon. This Document approaches this subject in a practical and accessible way, from the point of view of architecture concerns. Additionally it contributes with a case study that develops a set of several strategies that are determinant in the building’s thermal behaviour alongside with contemporary architecture intentions that are supposed to follow their own principles.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Márcia Ribeiro de Albuquerque; Jessé Luís Prange; Bárbara Françoise Cardoso;

    This paper means to present the Green GDP (Gross Domestic Product) as a measure of sustainability of one sugarcane mill located in the Central region of Paraná, analyzing its evolution from 2007 to 2011. This paper used the fundamental equation of the Green GDP adapting it to its measurement in the sugarcane industry, enabling the use of Green GDP as a sustainability indicator of the activity of the mill under study. Depletion of water resource and environmental degradation of the mill under study showed rising trend and consequently the Green GDP was lower than the conventional GDP. It reflects the loss of sustainability of the activity of this mill.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Economia & Regiã...arrow_drop_down
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    Economia & Região
    Article . 2013
    Data sources: DOAJ
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      Economia & Região
      Article . 2013
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  • Authors: Shikida, Pery Francisco Assis; Perosa, Bruno Benzaquen; Shikida, Pery Francisco Assis; Perosa, Bruno Benzaquen;

    Este trabalho tem como objetivo analisar a relação de path dependence no sistema econômico e institucional do álcool combustível no Brasil. O etanol, após fases de crescimento e desafios, tornou-se parte da matriz energética brasileira. Esta trajetória reflete a persistência de uma rota (caminho) traçada sob influência de organizações (usinas e destilarias, setor de máquinas e equipamentos, indústria automobilística, Estado, organizações corporativistas, P&D) e de agentes econômicos (consumidores) voltados, direta ou indiretamente, para a manutenção dessa rota escolhida. Este arranjo de “interesses” deu sustentação ao etanol brasileiro, mesmo em momentos em que a competitividade deste combustível era questionada como opção energética mais adequada para a substituição de gasolina/ diesel. Mesmo após a retomada do setor nos anos 2000, em que a tecnologia flex e as crescentes preocupações acerca das mudanças climáticas impulsionaram o setor no Brasil e no mundo, a escolha do etanol como substituto dos derivados do petróleo ainda se mostra ameaçada por novas tecnologias renováveis e mesmo pela descoberta de novas reservas de petróleo. Fica claro que, caso se deseje manter a liderança no mercado nacional de combustíveis e expandir o mercado internacional para estes produtos, a coalizão em torno do álcool combustível ainda precisará enfrentar diversas questões técnicas e institucionais......This study aims to analyze the relationship of path dependence in the economic and institutional system of ethanol in Brazil. Ethanol, after stages of growth and challenges, has become part of the Brazilian energy matrix. This trajectory reflects the persistence of a path shaped under the influence of organizations (mills and distilleries, machinery and equipment sectors, automotive industry, the government, corporatist organizations, R&D) and economic agents (consumers) interested, directly or indirectly, in the maintenance of the chosen route. This “interest arrangements” supported the Brazilian ethanol, even when this fuel competitiveness was questioned as the most appropriate energy option to substitute gasoline/diesel. Even after the recovery of this sector in the 2000s, when the flex-fuel technology and the GHG (Greenhouse Gases) emissions increased the ethanol demand in Brazil and abroad, the choice of ethanol as the main substitute of fossil fuels is still jeopardized by other renewable fuels and even by the discovery of new oil reserves in Brazil. In order to succeed, the collision supporting the expansion of ethanol in the international market will have to handle a myriad of technological and institutional barriers in Brazil and worldwide.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Santos, Luís M.; Couto, J. Pedro;

    Currently there is a growing concern about climate change resulting from increased CO2 emissions, leading to an increasing demand of buildings that are more sustainable and energy efficient. The AEC industry have been acquiring more demanding standards of sustainability and energy efficiency, requiring analysis processes to be more complex and integrated with each other. Therefore, it has become vital to implement BIM, enabling greater efficiency in the collaborative process between actors. Thus, the use of BIM can contribute to sustainability through forecasting energy consumption and their usage costs with credibility, reliability and consistency of results. The study of the benefits and barriers to the introduction of BIM in energy analysis of buildings and the analysis of the interoperability between BIM tools and specialized software for energy analysis becomes relevant, as well as the study of workflows that provide good efficiency, which will boost its correct implementation in the AEC industry Currently there is a growing concern about climate change resulting from increased CO2 emissions, leading to an increasing demand of buildings that are more sustainable and energy efficient. The AEC industry have been acquiring more demanding standards of sustainability and energy efficiency, requiring analysis processes to be more complex and integrated with each other. Therefore, it has become vital to implement BIM, enabling greater efficiency in the collaborative process between actors. Thus, the use of BIM can contribute to sustainability through forecasting energy consumption and their usage costs with credibility, reliability and consistency of results. The study of the benefits and barriers to the introduction of BIM in energy analysis of buildings and the analysis of the interoperability between BIM tools and specialized software for energy analysis becomes relevant, as well as the study of workflows that provide good efficiency, which will boost its correct implementation in the AEC industry

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Universidade do Minh...arrow_drop_down
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  • Authors: Fonseca, Marcia Batista; Paixao, Marcia Cristina; Maia, Sinezio Fernandes; Fonseca, Marcia Batista; +2 Authors

    No início do século XXI, notadamente os EUA e UE discutem e promovem o uso de políticas específicas de estímulo à substituição de combustíveis fósseis por fontes renováveis de origem de biomassa. No Brasil desde os anos 70 a produção do etanol representa uma alternativa ecológica geradora de emprego e renda. A produção de etanol brasileira, de baixo custo e alta produtividade, dadas as vantagens existentes junto aos recursos naturais e mão de obra, é destinada principalmente para o mercado norte americano e o mercado europeu. O objetivo geral deste estudo é obter a previsão de produção do etanol brasileiro para exportação entre 2007-2010 através de uma aplicação de Vetores Auto-Regressivos (VAR), a partir das variáveis captadas pelo modelo Mundell-Fleming, Produto Interno Bruto Agropecuário, taxa de juros, câmbio, preço e exportações do etanol. Os resultados apontam para uma tendência crescente de produção iniciada em 2006. A taxa de crescimento da produção prevista de etanol brasileiro para exportação entre 2007-2010 situa-se na ordem de 44,89%.----------------------------------------------Since the beginning of the 21st century, especially the USA and EU have been discussing and promoting the use of specific incentive politics to substitute fossil fuels for renewable sources of biomass origin. In Brazil since the seventies the production of ethanol has been representing an ecological alternative generating employment and income. The production of Brazilian ethanol, of low cost and high productivity, given the existent advantages combined with the natural resources and manual work, is destined mainly for the North American and the European market. The general objective of this study is to obtain the forecast of Brazilian ethanol production for export in the 2007-2010 period through an application of Vector Auto Regression Analysis (VAR), starting from the variables captured by the Mundell-Fleming model, the agricultural gross domestic product, interest rate, exchange, price and ethanol exports. The results appear to have a tendency of growth for the production initiated in 2006. The growth rate of the foreseen Brazilian ethanol production of Brazilian for the export from 2007 to 2010 is about 44.89%.

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    Authors: Dantas, Stefano Giacomazzi; Pompermayer, Fabiano Mezadre;

    This work discusses the economic viability of photovoltaic systems usage in distributed generation of electricity and its possible impacts on electrical network. We present the current situation and perspectives of distributed generation in Brazil. Besides that, we developed a financial analysis of grid-tie photovoltaic systems, considering factors such as local solar radiation and conventional energy cost, using data from the National Agency of Electrical Energy (ANEEL). Overall, the usage of photovoltaic systems in Brazil is economically attractive. Despite this, we have to discuss the impacts on the electrical network that might happen due to energy supply variability and economic losses of electric companies and users. However, we show that there is still a lot of room for development of photovoltaic systems in Brazil, especially within regions with high solar radiation.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ EconStorarrow_drop_down
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    EconStor
    Research . 2018
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      EconStor
      Research . 2018
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    Authors: Sousa, Afonso Marques de;

    Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia O conforto térmico é algo cada vez mais valorizado pelo ser humano, sendo fundamental para a sua produtividade e o seu bem-estar. Porém, assegurar condições de conforto térmico tem consequências energéticas, económicas e ambientais. Os órgãos de governo da União Europeia consideram que o aumento da eficiência energética dos edifícios é algo de extrema importância, devido a estes serem grandes consumidores de energia. Logo, um método eficaz de reduzir custos energéticos e económicos e impactos ambientais passa por tornar os edifícios muito eficientes energeticamente. A eficiência energética de um edifício está diretamente relacionada com a qualidade das suas soluções construtivas. Uma forma de melhorar as características das soluções construtivas é o uso de isolamento térmico, de modo a diminuir as trocas de calor entre o exterior e o interior de um edifício. O presente estudo tinha como objetivo a realização de uma análise económica, energética e ambiental da aplicação do isolamento térmico aos edifícios do continente europeu. Esta análise permitiu compreender a influência da aplicação de isolamento térmico na eficiência energética dos edifícios e assim perceber a influência desta medida nos custos energéticos, económicos e ambientais do ciclo de vida completo dos edifícios localizados no continente europeu. Adicionalmente, fez-se uma verificação de qual o material isolante térmico mais adequado. A análise foi efetuada segundo as perspetivas económica, energética e ambiental. Os custos do conforto térmico dependem da tipologia de uso do edifício e do tipo de clima. Assim, de forma a representar as tipologias do edificado europeu foram selecionados seis edifícios diferentes, sendo estes: um apartamento e uma moradia (edifícios residenciais), uma clínica (edifício de serviços com funcionamento permanente), uma escola e uma agência bancária (edifícios de serviços com funcionamento intermitente) e um supermercado (edifício de comércio com funcionamento intermitente. Para representar o clima do continente europeu foram selecionadas 5 localizações, em função do número de graus-dia de aquecimento e de arrefecimento, envolvendo assim 5 tipos de clima: Málaga (quente), Lisboa (moderado), Valladolid (frio), Varsóvia (muito frio), Reykjavik (extremamente frio). Recorreu-se à folha de cálculo CalProTerm para a obtenção das propriedades termofísicas das soluções construtivas opacas e ao software SEnergEd para a realização da simulação do comportamento energético, económico e ambiental do ciclo de vida dos edifícios. A versão do software SEnergEd disponibilizada não realizava a análise ambiental do ciclo de vida do edifício, pelo que foi necessário proceder à implementação desta vertente, munindo este software com os algoritmos necessários à realização do cálculo de impactos ambientais.Os resultados obtidos mostram, em termos muito genéricos, que a aplicação de isolamento térmico à envolvente opaca dos edifícios do continente europeu é mais benéfica em termos energéticos e em termos ambientais do que sob a perspetiva económica. Adicionalmente, a espessura ótima de isolamento térmico depende da tipologia de edifício, do tipo de clima e da perspetiva com que foi efetuada a análise (energética, ambiental ou económica). Thermal comfort is something increasingly valued by the human being, being fundamental for their productivity and well-being. However, ensuring thermal comfort conditions has energy, economic and environmental consequences. The Governing Bodies of the European Union consider that increasing the energy efficiency of buildings is extremely important, especially due to being one of the major energy consumers. Therefore, an effective method of reducing energy and economic costs and environmental impacts is to make buildings very energy efficient. The energy efficiency of a building is directly related to the quality of its constructive solutions. One way to improve the characteristics of constructive solutions is the use of thermal insulation, so as to decrease heat exchanges between the outside and the interior of a building.The present study aimed to carry out an economic, energy and environmental analysis of the application of thermal insulation to buildings on the European continent. This analysis made it possible to understand the influence of the application of thermal insulation on the energy efficiency of buildings and thus to understand the influence of this measure on the energy, economic and environmental costs of the complete life cycle of buildings located on the European continent. Additionally, a verification was made of which is the most suitable thermal insulating material. The analysis was carried out according to the economic, energy and environmental perspectives. Thermal comfort costs depend on the type of use of the building and the type of climate. Thus, to represent the typologies of European buildings, six different buildings were selected, namely: an apartment and a house (residential buildings), a clinic (service building with permanent operation), a school and a bank branch (buildings of services with intermittent operation) and a supermarket (commercial building with intermittent operation. To represent the climate of the European continent, 5 locations were selected, depending on the number of degree-days of heating and cooling, thus involving 5 types of climate: Malaga (hot), Lisbon (moderate), Valladolid (cold), Warsaw (very cold), Reykjavik (extremely cold).The CalProTerm spreadsheet was used to obtain the thermophysical properties of the opaque constructive solutions, the SEnergEd software was used to simulate the energy, economic and environmental behavior of the buildings' life cycle. The version of the SEnergEd software initially available did not carry out the environmental analysis of the building's life cycle, therefore it was necessary to implement this aspect, providing this software with the algorithms necessary to carry out the calculation of environmental impacts.The results obtained showed, in very general terms, that the application of thermal insulation to the opaque envelope of buildings on the European continent is more beneficial in energy and environmental terms than from an economic perspective. Additionally, the optimal thickness of thermal insulation depends on the type of building, the type of climate and the perspective from which the analysis was carried out (energy, environmental or economic).

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    Estudo Geral
    Master thesis . 2022
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      Estudo Geral
      Master thesis . 2022
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    Authors: Sottomayor, Ana; Castro, Joana Vidal; Carvalho, António; Brito, Carlos; +2 Authors

    As parcerias em saúde global ocupam um importante lugar na discussão da saúde global. Durante o 5º Congresso Nacional de Medicina Tropical foram discutidos alguns pontos centrais desta área: investigação, implementação e financiamento. O objetivo deste artigo é, com base nas ideias apresentadas e do debate gerado, refletir sobre cada um dos temas, sobressaindo os aspetos mais relevantes para a atualidade e futuro das parcerias em saúde global. O artigo tem por base as apresentações, a discussão gerada e a revisão bibliográfica sobre as três temáticas centrais referidas. As parcerias em saúde global pretendem reverter e superar as assimetrias Norte/Sul em diversos níveis: capacitação, acesso, conhecimento, financiamento, investigação, ensino e desenvolvimento de ciência; contribuindo para a construção de uma sociedade baseada no conhecimento e com vista ao desenvolvimento sustentável e cobertura universal em saúde. Estas parcerias são crescentemente reconhecidas como um elemento fundamental para alcançar os ODS, existindo, no entanto, a necessidade de assegurar que não prejudicam nenhum dos intervenientes. Devem ser equilibradas e simétricas, espelhando os interesses de todas as partes envolvidas, reforçando as capacidades existentes e prezando pela transparência e inclusão de todos os parceiros em todas as fases. Assim, as parcerias em saúde global poderão ser verdadeiramente efetivas, levando a novas formas de articulação, implementação e financiamento. Partnerships in global health stand in an important position when discussing global health. During the 5th National Congress of Tropical Medicine, some central themes in this area were discussed: research, implementation and funding. This paper aims to reflect upon each theme, highlighting the most relevant aspects for the future and present of global health partnerships. It is based on the various presentations and the ensuing discussion, also relying on a literature review on the referred three central themes. Global health partnerships aim to reverse and overcome the North/South asymmetries at different levels: training, access, knowledge, funding, research, education and science development; contributing towards the construction of a knowledge-based society, aiming at sustainable development and universal health coverage. These partnerships are increasingly understood as critical to attaining all SDGs, but there is also the need to ensure that they do not harm any of the stakeholders. They must be balanced and symmetrical, reflecting the interests of all parties involved, fostering the inclusion of all partners in every stage. Therefore, partnerships in global health may be truly effective, leading to innovative ways of articulation, implementation and funding. publishersversion published

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    Authors: Reis, A. H.; Miguel, A. F.;

    The worldwide scarcity of fossil fuels regarding primary energy demand together with growing environmental concerns have raised new challenges to the world economy, and led to changes in the energy paradigm. Industry, services, researchers, and the Academy are challenged to envisage new solutions through setting up new conversion processes, designing new power systems, and investigating and developing new energy sources and vectors. A broad and up-to-date views on flow systems, energy vectors, together with fuel cells, biomass, and energy recovery issues are covered in this collection. The Guest Editors are grateful to the authors who contributed to this special issue and to all colleagues who participated in the review process.

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    Authors: Lima, Angélica Gomes; Silva, Ana Maria Mendes da; Soares, Cleir Elenir Coelho; Souza, Raquel Alves Xavier de; +1 Authors

    doi: 10.5216/ree.v12i3.6156A pele é um órgão externo e está sujeita a agressões diárias provocadas pela exposição solar. Os profissionais que exercem seu trabalho em ambientes externos estão sujeitos aos danos ocasionados pela exposição solar sem proteção, como os agentes comunitários de saúde e de combate a endemias. Nesse sentido, esse estudo teve como objetivo conhecer os hábitos de exposição solar de agentes comunitários de saúde e de combate a endemias que atuam no município de Ribeirão das Neves, Minas Gerais. Foi realizado um estudo exploratório, no ano de 2008 com a aplicação de um questionário semi-estruturado, com 7 agentes comunitários de saúde e 6 agentes de combate a endemias. Os resultados revelaram que a maior parte dos entrevistados expõe-se por mais de cinco horas diárias a radiação solar, sendo a totalidade em horário crítico; 46,17% não usam protetor solar e 23% associam métodos químicos e físicos e todos apresentaram algum agravo a pele em decorrência de sua atividade profissional. Os resultados apontam para a importância da criação e implementação de ações que motivem esses profissionais no uso de medidas de fotoproteção efetivas. Descritores: Radiação solar; Promoção da saúde; Saúde do Trabalhador. doi: 10.5216/ree.v12i3.6156La piel es un órgano externo y está sujeto a agresiones diarias provocadas por la exposición solar. Los profesionales que ejercen su trabajo en ambientes externos están sujetos a los daños causados por la exposición solar sin protección, como los agentes comunitarios de salud y de combate a las endemias. En ese sentido, ese estudio tuvo como objetivo conocer los hábitos de exposición solar de los agentes comunitarios de salud y de combate a las endemias que actúan en el municipio de Ribeirão das Neves, Minas Gerais. Fue realizado un estudio exploratorio en el año de 2008 con la aplicación de un cuestionario semiestructurado, con 7 agentes comunitarios de salud y 6 agentes de combate a las endemias. Los resultados revelaron que los entrevistados se exponen por más de cinco horas diarias a la radiación solar, siendo la totalidad en horario crítico; 46,17% no utilizan protector solar y 23% asocian métodos químicos y físicos y todos presentaron agravios a la piel resultantes de sus actividades profesionales. Los resultados apuntan para la importancia de la creación y implementación de acciones que motiven a esos profesionales a utilizar medidas eficaces de fotoprotección. Descriptores: Radiación solar; Promoción a la salud; Salud del trabajador. doi: 10.5216/ree.v12i3.6156 The skin is an external organ and is rateable to daily attack by sun exposure. Professionals who work in outdoor environments are at risk for occasional damage caused by sun exposure if unprotected, such as public health workers and endemic disease control workers. Therefore, this study aimed to discover the sun exposure habits of public health workers and endemic disease control workers who work in the municipality of Ribeirão das Neves, Minas Gerais. In 2008, an exploratory study was conducted using a semi-formal questionnaire with 7 public health workers and 6 endemic disease control workers. The results revealed that most part of those interviewed are exposed to sun radiation for more than five hours per day, all during the most critical exposure period; 46.17% do not use sun protection and 23% use chemical and physical methods and all displayed some kind of skin condition resulting from their professional activity. The results emphasize the importance of creating and implementing initiatives that motivate these professionals to use effective means of sun protection. Descriptors: Solar radiation; Health promotion; Worker Health.

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    Authors: Teixeira, Filipe Manuel Martins;

    Um nearly zero-energy building (nzeb) é um edifício que produz tanta ou mais energia quanto a que consome num ano típico. As medidas de eficiência assumem um papel de tal forma preponderante na redução das necessidades de consumo que, através da captação de energias renováveis, se torna possível alcançar um balanço de energia zero. Actualmente, a abordagem mais comum é usar a rede pública como fonte e dissipador dessa energia eléctrica. O conceito tem-se expandido de forma notória, dentro ou fora do território nacional, sendo hoje possível aprendermos os conceitos inerentes aos edifícios de energia zero a partir de importantes projectos, como é exemplo disso o edifício Solar XXI em Lisboa. Este documento procura abordar o tema de forma prática e acessível, do ponto de vista das preocupações da arquitectura. Para isso, contribui um caso de estudo que pretende compor uma lógica integradora de várias estratégias determinantes no comportamento térmico do edifício, com intenções de arquitetura contemporânea que se querem fiéis aos seus princípios. A nearly zero-energy building (nzeb) is a sort of building that produces as much or more energy than it consumes in an average year. The efficiency measures play an important role to reduce energy consumption such that the balance of energy needs can be supplied with renewable technologies in order to reach a zero energy result. Today’s approach is usually to use the public grid as a source and a way to dissipate this electric energy. This concept has been spreading in a notorious way in and outside our national territory. With this intention, it is possible today to learn the underlying concepts of the energy zero buildings through several projects, such as the Solar XXI building in Lisbon. This Document approaches this subject in a practical and accessible way, from the point of view of architecture concerns. Additionally it contributes with a case study that develops a set of several strategies that are determinant in the building’s thermal behaviour alongside with contemporary architecture intentions that are supposed to follow their own principles.

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    Authors: Márcia Ribeiro de Albuquerque; Jessé Luís Prange; Bárbara Françoise Cardoso;

    This paper means to present the Green GDP (Gross Domestic Product) as a measure of sustainability of one sugarcane mill located in the Central region of Paraná, analyzing its evolution from 2007 to 2011. This paper used the fundamental equation of the Green GDP adapting it to its measurement in the sugarcane industry, enabling the use of Green GDP as a sustainability indicator of the activity of the mill under study. Depletion of water resource and environmental degradation of the mill under study showed rising trend and consequently the Green GDP was lower than the conventional GDP. It reflects the loss of sustainability of the activity of this mill.

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    Economia & Região
    Article . 2013
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      Economia & Região
      Article . 2013
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  • Authors: Shikida, Pery Francisco Assis; Perosa, Bruno Benzaquen; Shikida, Pery Francisco Assis; Perosa, Bruno Benzaquen;

    Este trabalho tem como objetivo analisar a relação de path dependence no sistema econômico e institucional do álcool combustível no Brasil. O etanol, após fases de crescimento e desafios, tornou-se parte da matriz energética brasileira. Esta trajetória reflete a persistência de uma rota (caminho) traçada sob influência de organizações (usinas e destilarias, setor de máquinas e equipamentos, indústria automobilística, Estado, organizações corporativistas, P&D) e de agentes econômicos (consumidores) voltados, direta ou indiretamente, para a manutenção dessa rota escolhida. Este arranjo de “interesses” deu sustentação ao etanol brasileiro, mesmo em momentos em que a competitividade deste combustível era questionada como opção energética mais adequada para a substituição de gasolina/ diesel. Mesmo após a retomada do setor nos anos 2000, em que a tecnologia flex e as crescentes preocupações acerca das mudanças climáticas impulsionaram o setor no Brasil e no mundo, a escolha do etanol como substituto dos derivados do petróleo ainda se mostra ameaçada por novas tecnologias renováveis e mesmo pela descoberta de novas reservas de petróleo. Fica claro que, caso se deseje manter a liderança no mercado nacional de combustíveis e expandir o mercado internacional para estes produtos, a coalizão em torno do álcool combustível ainda precisará enfrentar diversas questões técnicas e institucionais......This study aims to analyze the relationship of path dependence in the economic and institutional system of ethanol in Brazil. Ethanol, after stages of growth and challenges, has become part of the Brazilian energy matrix. This trajectory reflects the persistence of a path shaped under the influence of organizations (mills and distilleries, machinery and equipment sectors, automotive industry, the government, corporatist organizations, R&D) and economic agents (consumers) interested, directly or indirectly, in the maintenance of the chosen route. This “interest arrangements” supported the Brazilian ethanol, even when this fuel competitiveness was questioned as the most appropriate energy option to substitute gasoline/diesel. Even after the recovery of this sector in the 2000s, when the flex-fuel technology and the GHG (Greenhouse Gases) emissions increased the ethanol demand in Brazil and abroad, the choice of ethanol as the main substitute of fossil fuels is still jeopardized by other renewable fuels and even by the discovery of new oil reserves in Brazil. In order to succeed, the collision supporting the expansion of ethanol in the international market will have to handle a myriad of technological and institutional barriers in Brazil and worldwide.

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    Authors: Santos, Luís M.; Couto, J. Pedro;

    Currently there is a growing concern about climate change resulting from increased CO2 emissions, leading to an increasing demand of buildings that are more sustainable and energy efficient. The AEC industry have been acquiring more demanding standards of sustainability and energy efficiency, requiring analysis processes to be more complex and integrated with each other. Therefore, it has become vital to implement BIM, enabling greater efficiency in the collaborative process between actors. Thus, the use of BIM can contribute to sustainability through forecasting energy consumption and their usage costs with credibility, reliability and consistency of results. The study of the benefits and barriers to the introduction of BIM in energy analysis of buildings and the analysis of the interoperability between BIM tools and specialized software for energy analysis becomes relevant, as well as the study of workflows that provide good efficiency, which will boost its correct implementation in the AEC industry Currently there is a growing concern about climate change resulting from increased CO2 emissions, leading to an increasing demand of buildings that are more sustainable and energy efficient. The AEC industry have been acquiring more demanding standards of sustainability and energy efficiency, requiring analysis processes to be more complex and integrated with each other. Therefore, it has become vital to implement BIM, enabling greater efficiency in the collaborative process between actors. Thus, the use of BIM can contribute to sustainability through forecasting energy consumption and their usage costs with credibility, reliability and consistency of results. The study of the benefits and barriers to the introduction of BIM in energy analysis of buildings and the analysis of the interoperability between BIM tools and specialized software for energy analysis becomes relevant, as well as the study of workflows that provide good efficiency, which will boost its correct implementation in the AEC industry

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  • Authors: Fonseca, Marcia Batista; Paixao, Marcia Cristina; Maia, Sinezio Fernandes; Fonseca, Marcia Batista; +2 Authors

    No início do século XXI, notadamente os EUA e UE discutem e promovem o uso de políticas específicas de estímulo à substituição de combustíveis fósseis por fontes renováveis de origem de biomassa. No Brasil desde os anos 70 a produção do etanol representa uma alternativa ecológica geradora de emprego e renda. A produção de etanol brasileira, de baixo custo e alta produtividade, dadas as vantagens existentes junto aos recursos naturais e mão de obra, é destinada principalmente para o mercado norte americano e o mercado europeu. O objetivo geral deste estudo é obter a previsão de produção do etanol brasileiro para exportação entre 2007-2010 através de uma aplicação de Vetores Auto-Regressivos (VAR), a partir das variáveis captadas pelo modelo Mundell-Fleming, Produto Interno Bruto Agropecuário, taxa de juros, câmbio, preço e exportações do etanol. Os resultados apontam para uma tendência crescente de produção iniciada em 2006. A taxa de crescimento da produção prevista de etanol brasileiro para exportação entre 2007-2010 situa-se na ordem de 44,89%.----------------------------------------------Since the beginning of the 21st century, especially the USA and EU have been discussing and promoting the use of specific incentive politics to substitute fossil fuels for renewable sources of biomass origin. In Brazil since the seventies the production of ethanol has been representing an ecological alternative generating employment and income. The production of Brazilian ethanol, of low cost and high productivity, given the existent advantages combined with the natural resources and manual work, is destined mainly for the North American and the European market. The general objective of this study is to obtain the forecast of Brazilian ethanol production for export in the 2007-2010 period through an application of Vector Auto Regression Analysis (VAR), starting from the variables captured by the Mundell-Fleming model, the agricultural gross domestic product, interest rate, exchange, price and ethanol exports. The results appear to have a tendency of growth for the production initiated in 2006. The growth rate of the foreseen Brazilian ethanol production of Brazilian for the export from 2007 to 2010 is about 44.89%.

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    Authors: Dantas, Stefano Giacomazzi; Pompermayer, Fabiano Mezadre;

    This work discusses the economic viability of photovoltaic systems usage in distributed generation of electricity and its possible impacts on electrical network. We present the current situation and perspectives of distributed generation in Brazil. Besides that, we developed a financial analysis of grid-tie photovoltaic systems, considering factors such as local solar radiation and conventional energy cost, using data from the National Agency of Electrical Energy (ANEEL). Overall, the usage of photovoltaic systems in Brazil is economically attractive. Despite this, we have to discuss the impacts on the electrical network that might happen due to energy supply variability and economic losses of electric companies and users. However, we show that there is still a lot of room for development of photovoltaic systems in Brazil, especially within regions with high solar radiation.

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    EconStor
    Research . 2018
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      Research . 2018
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    Authors: Sousa, Afonso Marques de;

    Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia O conforto térmico é algo cada vez mais valorizado pelo ser humano, sendo fundamental para a sua produtividade e o seu bem-estar. Porém, assegurar condições de conforto térmico tem consequências energéticas, económicas e ambientais. Os órgãos de governo da União Europeia consideram que o aumento da eficiência energética dos edifícios é algo de extrema importância, devido a estes serem grandes consumidores de energia. Logo, um método eficaz de reduzir custos energéticos e económicos e impactos ambientais passa por tornar os edifícios muito eficientes energeticamente. A eficiência energética de um edifício está diretamente relacionada com a qualidade das suas soluções construtivas. Uma forma de melhorar as características das soluções construtivas é o uso de isolamento térmico, de modo a diminuir as trocas de calor entre o exterior e o interior de um edifício. O presente estudo tinha como objetivo a realização de uma análise económica, energética e ambiental da aplicação do isolamento térmico aos edifícios do continente europeu. Esta análise permitiu compreender a influência da aplicação de isolamento térmico na eficiência energética dos edifícios e assim perceber a influência desta medida nos custos energéticos, económicos e ambientais do ciclo de vida completo dos edifícios localizados no continente europeu. Adicionalmente, fez-se uma verificação de qual o material isolante térmico mais adequado. A análise foi efetuada segundo as perspetivas económica, energética e ambiental. Os custos do conforto térmico dependem da tipologia de uso do edifício e do tipo de clima. Assim, de forma a representar as tipologias do edificado europeu foram selecionados seis edifícios diferentes, sendo estes: um apartamento e uma moradia (edifícios residenciais), uma clínica (edifício de serviços com funcionamento permanente), uma escola e uma agência bancária (edifícios de serviços com funcionamento intermitente) e um supermercado (edifício de comércio com funcionamento intermitente. Para representar o clima do continente europeu foram selecionadas 5 localizações, em função do número de graus-dia de aquecimento e de arrefecimento, envolvendo assim 5 tipos de clima: Málaga (quente), Lisboa (moderado), Valladolid (frio), Varsóvia (muito frio), Reykjavik (extremamente frio). Recorreu-se à folha de cálculo CalProTerm para a obtenção das propriedades termofísicas das soluções construtivas opacas e ao software SEnergEd para a realização da simulação do comportamento energético, económico e ambiental do ciclo de vida dos edifícios. A versão do software SEnergEd disponibilizada não realizava a análise ambiental do ciclo de vida do edifício, pelo que foi necessário proceder à implementação desta vertente, munindo este software com os algoritmos necessários à realização do cálculo de impactos ambientais.Os resultados obtidos mostram, em termos muito genéricos, que a aplicação de isolamento térmico à envolvente opaca dos edifícios do continente europeu é mais benéfica em termos energéticos e em termos ambientais do que sob a perspetiva económica. Adicionalmente, a espessura ótima de isolamento térmico depende da tipologia de edifício, do tipo de clima e da perspetiva com que foi efetuada a análise (energética, ambiental ou económica). Thermal comfort is something increasingly valued by the human being, being fundamental for their productivity and well-being. However, ensuring thermal comfort conditions has energy, economic and environmental consequences. The Governing Bodies of the European Union consider that increasing the energy efficiency of buildings is extremely important, especially due to being one of the major energy consumers. Therefore, an effective method of reducing energy and economic costs and environmental impacts is to make buildings very energy efficient. The energy efficiency of a building is directly related to the quality of its constructive solutions. One way to improve the characteristics of constructive solutions is the use of thermal insulation, so as to decrease heat exchanges between the outside and the interior of a building.The present study aimed to carry out an economic, energy and environmental analysis of the application of thermal insulation to buildings on the European continent. This analysis made it possible to understand the influence of the application of thermal insulation on the energy efficiency of buildings and thus to understand the influence of this measure on the energy, economic and environmental costs of the complete life cycle of buildings located on the European continent. Additionally, a verification was made of which is the most suitable thermal insulating material. The analysis was carried out according to the economic, energy and environmental perspectives. Thermal comfort costs depend on the type of use of the building and the type of climate. Thus, to represent the typologies of European buildings, six different buildings were selected, namely: an apartment and a house (residential buildings), a clinic (service building with permanent operation), a school and a bank branch (buildings of services with intermittent operation) and a supermarket (commercial building with intermittent operation. To represent the climate of the European continent, 5 locations were selected, depending on the number of degree-days of heating and cooling, thus involving 5 types of climate: Malaga (hot), Lisbon (moderate), Valladolid (cold), Warsaw (very cold), Reykjavik (extremely cold).The CalProTerm spreadsheet was used to obtain the thermophysical properties of the opaque constructive solutions, the SEnergEd software was used to simulate the energy, economic and environmental behavior of the buildings' life cycle. The version of the SEnergEd software initially available did not carry out the environmental analysis of the building's life cycle, therefore it was necessary to implement this aspect, providing this software with the algorithms necessary to carry out the calculation of environmental impacts.The results obtained showed, in very general terms, that the application of thermal insulation to the opaque envelope of buildings on the European continent is more beneficial in energy and environmental terms than from an economic perspective. Additionally, the optimal thickness of thermal insulation depends on the type of building, the type of climate and the perspective from which the analysis was carried out (energy, environmental or economic).

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    Master thesis . 2022
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    Authors: Sottomayor, Ana; Castro, Joana Vidal; Carvalho, António; Brito, Carlos; +2 Authors

    As parcerias em saúde global ocupam um importante lugar na discussão da saúde global. Durante o 5º Congresso Nacional de Medicina Tropical foram discutidos alguns pontos centrais desta área: investigação, implementação e financiamento. O objetivo deste artigo é, com base nas ideias apresentadas e do debate gerado, refletir sobre cada um dos temas, sobressaindo os aspetos mais relevantes para a atualidade e futuro das parcerias em saúde global. O artigo tem por base as apresentações, a discussão gerada e a revisão bibliográfica sobre as três temáticas centrais referidas. As parcerias em saúde global pretendem reverter e superar as assimetrias Norte/Sul em diversos níveis: capacitação, acesso, conhecimento, financiamento, investigação, ensino e desenvolvimento de ciência; contribuindo para a construção de uma sociedade baseada no conhecimento e com vista ao desenvolvimento sustentável e cobertura universal em saúde. Estas parcerias são crescentemente reconhecidas como um elemento fundamental para alcançar os ODS, existindo, no entanto, a necessidade de assegurar que não prejudicam nenhum dos intervenientes. Devem ser equilibradas e simétricas, espelhando os interesses de todas as partes envolvidas, reforçando as capacidades existentes e prezando pela transparência e inclusão de todos os parceiros em todas as fases. Assim, as parcerias em saúde global poderão ser verdadeiramente efetivas, levando a novas formas de articulação, implementação e financiamento. Partnerships in global health stand in an important position when discussing global health. During the 5th National Congress of Tropical Medicine, some central themes in this area were discussed: research, implementation and funding. This paper aims to reflect upon each theme, highlighting the most relevant aspects for the future and present of global health partnerships. It is based on the various presentations and the ensuing discussion, also relying on a literature review on the referred three central themes. Global health partnerships aim to reverse and overcome the North/South asymmetries at different levels: training, access, knowledge, funding, research, education and science development; contributing towards the construction of a knowledge-based society, aiming at sustainable development and universal health coverage. These partnerships are increasingly understood as critical to attaining all SDGs, but there is also the need to ensure that they do not harm any of the stakeholders. They must be balanced and symmetrical, reflecting the interests of all parties involved, fostering the inclusion of all partners in every stage. Therefore, partnerships in global health may be truly effective, leading to innovative ways of articulation, implementation and funding. publishersversion published

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