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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: Wood Junior, Thomaz; Oliveira, Dafne de;

    Egos Conference 2020 Sustainable development has become a major topic for public policy makers and managers as the impact of human actions on the environment generate increasingly dramatic consequences for society, the economy and for business. In parallel, the debate about alternative business models is growing in academia. Our research is aligned with the above movements. This article describes and analyzes a case of organizing for sustainable development that involved multiple social actors. The research focuses on a project that aimed to define guidelines for carrying out large-scale construction projects in the Amazon. As theoretical lens, we used the concept of territorial governance, defined as the co-joint process of engaging, organizing and coordinating social actors to develop territorial capital and cohesion in a sustainable way. We found that: first, the social technology that was employed in the case, which was based on transparency, strategic communication and convergence construction, was vital to the success of the project; second, the project fostered territorial cohesion and relationships between social actors; and third, the notion of territorial governance can be applied even in areas where the population density is low. We believe that this study makes a contribution to studies on sustainable development and territorial governance, as well as to organizational studies in a broader fashion. The use of territory as the locus of analysis offers opportunities for researchers that are interested in expanding their knowledge of new ways of organizing, especially ways that can provide solutions to grand economic, social and environmental challenges.

    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 Instituc...arrow_drop_down
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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 Instituc...arrow_drop_down
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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: Moreira, Heloísa Beatriz Cordeiro;

    Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Pós-graduação em Engenharia Mecânica - FEB Recently, because of the energy crisis, the environmental and economical problems, the politics of incentive of the natural gas and the growing importance of cogeration applications, a growing interest has been obseved toward application of absorption cycles, due to the possibility of energy use, for useful ends, of the residual heat of different processes. Coolers (chillers) of absorption have been used widely in industries of air conditioning, partly because they can be operated by hot water, vapor, natural gas, solar energy, biomass, among other, instead of electricity, since approximately 15% of all the electricity produced is globally used for refrigeration and air conditioning according to the International Institute of Refrigeration in Paris (IIF/IIR). Thir work has as the main objective to evaluate a cycle of refrigeration for absorption with solution of lithium bromide-water using biogas of sanitary landfill and mixtures of this with natural gas. By obtaining the energy potential of the biogas of sanitary landfill, natural gas and their mixtures, using the software Combust, it was simulated with the software EES (Engineering Equation Solver), a cycle of refrigeration for absorption with a refrigerating capacity in the range between 18 and 70 kW, which are actual data of equipment of refrigeration for commercial absorption. The analyses of the results showed that the energy viability of the system using in the generator biogas, natural gas and their mixtures when compared with equipments that use traditional fuels (GN, diesel oil, among other), for operation of equipments of refrigeration (chiller) commercial with capacity of refrigeration of 12900 kcal/h and temperature of the water in the... Recentemente, diante da crise energética, dos problemas ambientais e econômicos, da política de estímulo do gás natural e da importância crescente de aplicações de cogeração, tem-se observado um interesse renovado para aplicação de ciclos de absorção, devido à possibilidade de aproveitamento energético, para fins úteis, do calor residual de diferentes processos. Resfriadores chillers de absorção são extensamente utilizados em indústrias de ar condicionado, em parte porque eles podem ser acionados através de água quente, vapor, queima do gás natural, energia solar, biomassa, dentre outros, em vez de eletricidade3, já que aproximadamente 15% de toda a eletricidade produzida mundialmente é usada para refrigeração e condicionamento de ar de acordo com o Instituto de Refrigeração em Paris (IIF/iir). Este trabalho tem como objetivo principal avaliar o ciclo de refrigeração por absorção com solução de brometo de lítio-água utilizando biogás de aterro sanitário e misturas deste com gás natural. Com a obtenção do potencial energético do biogás de aterro sanitário, gás natural e suas misturas, utilizando o software Combust, simulou-se através do software EES (Engineering Equantion Solver), um ciclo de refrigeração por absorção com capacidade frigorífica variando entre 18 e 70 KW baseando-se em dados de equipamento de refrigeração por absorção comerciais. As análises dos resultados mostraram a viabilidade energética do sistema utilizando no gerador biogás, gás natural e suas misturas quando comparada com equipamento que utiliam combustíveis tradicionais (GN, óleo diesel, dentre outros), para acionamento de equipamentos de refrigeração (chiller) comerciais com capacidade de resfriamento de 12900 Kcal/h e temperatura da água na entrada....

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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: Laranjeiro, Joana Alcaide;

    Dissertação de Mestrado em Reabilitação de Edifícios apresentada à Faculdade de Ciências e Tecnologia A eficiência energética do parque imobiliário é um tema que tem ganho expressão nos últimos anos. O Sistema de Certificação Energética, que surge na sequência da implementação da diretiva europeia EPBD, permitiu estabelecer medidas para atingir os requisitos mínimos relativos à eficiência energética nos edifícios. Porém, existe um grupo de imóveis que estão excluídos deste sistema de certificação como é o caso dos Edifícios de Elevado Valor Patrimonial.Este trabalho teve como objetivo analisar as implicações da adoção de medidas de eficiência energética em intervenções que devem salvaguardar os valores existentes. Para esta análise foi necessário avaliar as Orientações, Cartas e publicações da UNESCO a fim de investigar quais as orientações relacionadas com a salvaguarda dos valores culturais, arquitetónicos e construtivos, assim como a existência ou não de linhas orientadoras quanto ao desempenho e eficiência dos edifícios classificados; a legislação europeia a fim de perceber quais as metas e considerações estabelecidas pela Europa para a diminuição do CO2; e a legislação portuguesa esclarecendo o que é que está abrangido pelo Sistema de Certificação Energética. Foram também estudadas algumas boas práticas de intervenções em edifícios europeus com valor cultural reconhecido.O caso de estudo utilizado para este trabalho foi o Real Colégio das Artes, pertencente ao conjunto Universidade de Coimbra – Alta e Sofia, inserido na Lista de Património Mundial da UNESCO em 2013. Com base na legislação europeia, nacional e orientações da UNESCO, foram traçadas algumas medidas de intervenção que pretendem melhorar a gestão energética do edifício fazendo um equilíbrio entre a preservação dos valores culturais e a eficiência energética.Foi possível constatar que, no caso do Real Colégio das Artes, existem várias opções projetuais passíveis de serem aplicadas para cada um dos elementos construtivos equacionados, com maior ou menor impacto nos valores culturais e arquitetónicos e com maior ou menor resultados ao nível do desempenho térmico. Para este caso específico, é possível afirmar que pode existir uma correlação entre o grau de desempenho energético que se pretende atingir e o seu impacto nos valores culturais e arquitetónicos do edifício. The energy efficienncy of the building stock is a theme that has been developed in recente years. The Energy Certification System, wich follow on from the implementation of the European Directive EPBD, has enabled the establishment of measures to meet the minimum requirements for energy efficiency in Buildings. However, there is a group of buildings that are excluded from this certification system: High-Value Buildings.This paper aimed to analyze the impact of energy efficiency measures in interventions that should safeguard existing values. For this analysis it was necessary to study the UNESCO Guidelines, Letters and Publications in order to know wich guidelines are related to the safeguarding of cultural, architectural and constructive values, as well as the existence or not of guidelines regarding the performance and efficiency of classified buildings. It was necessary to study also European legislation to understand the goals and considerations set by Europe for the reduction of CO2 and Portuguese legislation clarifying what is covered by the Energy Certification System. Some good practices of interventions in European buildings with recognized cultural value were also studied.The case study used in this project was the Royal College of Arts, belonging to the plot Universidade de Coimbra – Alta e Sofia, included in the UNESCO World Heritage List in 2013. Based on European National and UNESCO guidelines, some intervention measures were proposed to improve the energy management of the building by balancing the preservation of cultural values and Energy efficiency.It was possible to realized that in Royal College of Arts, there are several design options that can be applied, with more or less impact on cultural and architectural values and with more or less results in terms of termal performance. For this particular case, it’s possible to say that can exist a correlation between the degree of Energy performance to be achieved and its impact oh the building’s cultural and architectural values.

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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: SOUZA FILHO, João Sales de.;

    Submitted by Lucienne Costa (lucienneferreira@ufcg.edu.br) on 2019-07-30T17:26:15Z No. of bitstreams: 1 JOÃO SALES DE SOUZA FILHO – DISSERTAÇÃO (PPGEQ) 2008.pdf: 1886477 bytes, checksum: a5a898e359e79a05b77f767d8c55e064 (MD5) Made available in DSpace on 2019-07-30T17:26:15Z (GMT). No. of bitstreams: 1 JOÃO SALES DE SOUZA FILHO – DISSERTAÇÃO (PPGEQ) 2008.pdf: 1886477 bytes, checksum: a5a898e359e79a05b77f767d8c55e064 (MD5) Previous issue date: 2008-07-31 Capes O hidrogênio surgiu como uma fonte de energia renovável não poluente, que possivelmente substituirá os combustíveis fósseis. Nesse sentido, este trabalho visa estudar o desempenho de um eletrolisador bipolar para produção de hidrogênio a partir da eletrólise da água, fazendo uso da energia elétrica convencional e energia solar fotovoltaica. O eletrolisador é constituído de 47 células, usando como eletrólito uma solução de KOH, e foi testado inicialmente com a energia elétrica convencional. Observou-se que o sistema teve seu funcionamento ótimo com uma corrente de 42,5 A, e uma tensão de 96,6 V. Isto corresponde a uma potência de 4,10 kW e uma vazão de 0,763 m3/h de hidrogênio. A energia consumida é de 5,37 kWh/m3 de hidrogênio, o que necessitaria de um sistema de energia com 64 painéis que forneceria uma vazão máxima de 0,012 m3/h de hidrogênio por painel. Também foram realizados experimentos com diversas configurações de painéis fotovoltaicos para avaliar o desempenho do eletrolisador. Com 6 painéis conectados em série, a mínima produção de hidrogênio foi obtida com uma tensão de 82,8 V e uma corrente de 1,1 A. Uma máxima produção de hidrogênio de 0,068 m3/h é obtida com uma configuração de 15 painéis solares em série, gerando uma tensão de 90,0 V e uma corrente de 4,49 A. Hydrogen emerges as a clean renewable energy source that will replace fossil fuels. In this way, this work studies the performance of a bipolar electrolyser to produce hydrogen from the water electrolysis, using conventional electricity and photovoltaic solar energy. The electrolyser is constituted of 47 cells working with a KOH solution electrolyte. First, the electrolyser was tested with conventional electricity and showed its best production at a current of 42.5 A and a tension of 96.6 V. This corresponds to a power of 4.10 kW with a hydrogen flow rate of 0.763 m3/h, meaning a energy consumption of 5.67 kWh/m3 which would need 64 photovoltaic panels at a maximum flow rate of 0.012 m3/h.panel. In the second part, the electrolyser is tested with several configurations of photovoltaic panels. With 6 panels connected in series, a minimum hydrogen production is obtained with a tension of 82.8 V and a current of 1,1 A. A maximum hydrogen production of 0,068 m3/h is reached with a solar configuration of 15 panels in series, giving a tension of 90.0 V and a current of 4.49 A.

    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/ LAReferencia - Red F...arrow_drop_down
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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/ LAReferencia - Red F...arrow_drop_down
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    Authors: NASCIMENTO, José Wallace Barbosa do.;

    Submitted by Deyse Queiroz (deysequeirozz@hotmail.com) on 2019-03-06T15:58:18Z No. of bitstreams: 1 JOSÉ WALLACE BARBOSA DO NASCIMENTO - DISSERTAÇÃO PPGEA 1991..pdf: 2804248 bytes, checksum: 2cf2a5bba1f1ab84f979c68e5838ba35 (MD5) Made available in DSpace on 2019-03-06T15:58:18Z (GMT). No. of bitstreams: 1 JOSÉ WALLACE BARBOSA DO NASCIMENTO - DISSERTAÇÃO PPGEA 1991..pdf: 2804248 bytes, checksum: 2cf2a5bba1f1ab84f979c68e5838ba35 (MD5) Previous issue date: 1991 Estudou-se o funcionamento de um motor estacionário com gasogênio de fluxo transversal descendente que aciona um ventilador centrifugo e recebe a energia térmica cedida pelos gases do gaseificador mediante um trocador de calor gás-ar, sendo esta energia utilizada para a secagem dos grãos de milho em camada estacionária. Os dados experimentais foram comparados com os simulados pelos modelos de Hukill e Thompson, usando-se o programa SASG-3 para microcomputador desenvolvido pelo o Núcleo de Tecnologia em Armazenagem. Para os três testes experimentais de secagem de milho, com o resfriamento dos gases, obteve-se temperaturas médias do ar de secagem de 51 e C , 54 "C e 56 *C e vazões de ar de 9,87, 9,30 e 8,69 nrVmin/ m= de secador, respectivamente, sendo as alturas da camada de secagem de 0,50m, 0,30m e 0,50m e teores iniciais de umidade de 24,537., 32,627. e 40,447. em base seca. Concluir que é possível secar, em média, 0,35 tonelada de milho em aproximadamente 11 horas, utilizando-se uma temperatura de 51 a 56 'C proveniente da energia térmica de um gaseificador de fluxo transversal descendente e que os modelos de simulação de secagem de Hukill e Thompson superestimaram os teores de umidades experimentais, em função do tempo. It was investgated the perfomance of a stacionary motor with downword -flow gas gerator which moves a centrifugal fan and receive thermal energy scatterad dor gaseificator gases, beyond thermal energy scattered for gases of motor escape though of heat gases-air, being this energy used for grain drying in stationary layer. The experimental data were compered with simulated data through Hukill and Thompson models, using the 5ASG-3 programa to microcomputer developed by Storage Tecnology Nucleus. For three experimental tests of corn drying, with the gas cooling, it was obtained average temperature of dryng air about 51°C, 54°C and 56°C and air flow about B.B7, 9.30 and 8.65 m3/min/m= of drier, respectively, being the heighs about 0.50 m, 0.30 m and 0.50m and initial moisture contents of 24.53"/., 32.62/i and 40.44X in drier basis. It was concluded that is possible to dry, on average, 0.35 ton of corn in about 11 horas, using temperatures of 51 to 56"C fron thermal energy of a downword transversal flow gaseificator and that tha Hukill and Thompson drying simulate models superestimated the experimental moisture cintent in funcion of the time.

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    Authors: Barbosa, Amanda Saldanha;

    Submitted by Maicon Juliano Schmidt (maicons) on 2015-06-05T16:57:51Z No. of bitstreams: 1 Amanda Saldanha Barbosa.pdf: 1110620 bytes, checksum: ca79658c72904b34bd463d8a587dbd0e (MD5) Made available in DSpace on 2015-06-05T16:57:51Z (GMT). No. of bitstreams: 1 Amanda Saldanha Barbosa.pdf: 1110620 bytes, checksum: ca79658c72904b34bd463d8a587dbd0e (MD5) Previous issue date: 2015-02-25 CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior PROSUP - Programa de Suporte à Pós-Gradução de Instituições de Ensino Particulares UNEMAT - Universidade do Estado de Mato Grosso O conceito de rio continuo (RCC) afirma que ocorrem alterações das características físicas e químicas ao longo do gradiente longitudinal de arroios, o que induz ao acréscimo de espécies de diferentes hábitos alimentares. Neste sentido o objetivo deste estudo é a caracterização trófica de espécies de peixes de cabeceira de arroios subtropicais e a identificação do fluxo de energia entre macroinvertebrados e peixes. Espera-se que a biomassa de peixes detritívoros aumente conforme o gradiente longitudinal, devido ao aumento da produção primaria neste sentido. O estudo foi desenvolvido em 32 sítios de 1ª a 4ª ordem pertencentes a oito microbacias da Bacia do Rio dos Sinos. As coletas de ictiofauna foram realizadas utilizando pesca elétrica em uma área de 100m2. Macroinvertebrados foram coletados com amostrador Surber, para avaliar a disponibilidade de recurso e biomassa de consumidores primários. A riqueza e a diversidade da comunidade íctica foram calculadas. Foi avaliada a dieta das espécies de peixes mais abundantes e calculados os índices de importância relativa e de amplitude de nicho. Para verificar a transferência de energia entre consumidores primários e secundários foi quantificada a biomassa seca de peixes e macroinvertebrados. Os resultados demonstram que a diversidade, a riqueza e a biomassa aumentaram conforme o gradiente longitudinal que arroios de cabeceira, corroborando as previsões do RCC. Também constatou-se que a comunidade íctica é composta por duas guildas alimentares (insetívoros e detritívoros). Estes últimos, por sua vez, elevaram a biomassa íctica e estabeleceram duas vias de fluxo de energia atuando como consumidores primários e secundários. The River Continuum Concept (RCC) suggests that changes in physico-chemical factors across the stream longitudinal gradient leads to the adding of species of different feeding habits. In this sense, the aim of the study is the trophic characterization of fish headwater species from subtropical streams and to identify energy flow between macroinvertebrate and fishes. It is expected that detritivorous fish standing crop increase across stream longitudinal gradient due to increase in primary production in the same direction. This study was carried out in 32 streams from 1st to 4thorder in eight microbasins in the Sinos River basin. Ichthyofauna was sampled with electric fishing in 100m2 sections. Macroinvertebrates were sampled with Surber sampler to assess resource availability and primary consumer standing crop. Richness and diversity of fish communities were also calculated. The diet of the most abundant fish species was assessed as well as relative importance and niche amplitude indexes. The results displayed that fish diversity, richness and standing crop increased across stream longitudinal gradient corroborating RCC postulates. It was also indicated that fish communities was composed by two feeding groups (insetivorous and detritivorous). The detritivorous fishes have in turn increased fish standing crop and established two directions of energy flow which act as both primary and secondary consumers.

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    Authors: Leva, Flavia Fernandes de;

    The aim of this research was to evaluate and compare the behavior of temperature inside poultry sheds with bell jar type gas conventional heating and heating in the floor with use of a heat exchanger. It was used the public domain program FEMM 4.2 for the analysis of temperature through the use of finite elements techniques with data collected from two lots. Heating in the floor is made with the hot water flowing through a heat exchanger, which is installed below the bed; this hot water is from solar heaters. From the results obtained with the simulations can be observed that the heating through the floor provides a more homogeneous distribution breast when compared with the bell jar type heating. The flow of heat is upwards supplying thus the most needed heating of the bird that is the pectoral part. Energy consumption evaluation was made with use of LPG; this has enabled a comparative analysis of the quantity of electric energy necessary to provide the same thermal energy and the financial expenses obtained with the heating though LPG or electric energy for each lot. Essa pesquisa foi conduzida com o objetivo de avaliar e comparar o comportamento da temperatura dentro do galpão avícola com aquecimento convencional tipo campânula a gás com o aquecimento pelo piso com o uso de serpentina. Foi utilizado para a análise do comportamento da temperatura o programa de computador de domínio público FEMM 4.2 que utiliza técnicas de elementos finitos, com base em 2 dos lotes coletados. O aquecimento pelo piso se dá com a utilização de água quente passando por um sistema tipo serpentina, que é instalada abaixo da cama, essa água quente é proveniente de aquecedor solar. A partir dos resultados obtidos com as simulações nota-se que o aquecimento através do piso fornece uma distribuição mais homogênea da temperatura quando comparado com o aquecimento tipo campânula. O fluxo de calor se dá de baixo para cima suprindo assim a necessidade maior de aquecimento da ave que é na parte peitoral. Foi realizada uma avaliação do consumo energético com a utilização do GLP, o que possibilitou uma análise comparativa da quantidade de energia elétrica necessária para fornecer a mesma energia térmica e os gastos financeiros obtidos com o aquecimento via GLP ou energia elétrica para cada lote. Doutor em Ciências

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    Authors: M.P. Simões; L. Gazarini; M. Madeira;

    Estudou-se a produção de biomassa e a variação sazonal da partição de carbono pelos seus componentes, numa comunidade arbustiva de Cistus ladanifer L. Avaliaram-se ainda os fluxos anuais de devolução de nutrientes ao solo, através da folhada e da precipitação, assim como os efeitos dos arbustos nas características do solo. A produção (1038 g m- ano-l) e acumulação (980 g m-2 ano-l) anuais de biomassa atingiram valores elevados, embora inferiores aos apontados para as espécies arbóreas presentes neste tipo de formações. A massa anual de folhada (451 g m-1 ano-l), por seu lado, foi da mesma ordem de grandeza da geralmente indicada para espécies arbóreas perenifólias ou mesmo caducifólias. Grande parte da biomassa produzida foi investida em folhas (44%), as quais constituíram o componente maioritária da folhada (88%). As quantidades de nutrientes armazenados na biomassa aérea (10,50, 1,41, 6,79, 17,71 e 1,90 g m-2, de N, P, K, ca e Mg, respectivamente) enquadram-se nos intervalos obtidos para formações florestais, o mesmo se passando com os fluxos anuais de retorno ao solo, através da folhada (1,72, 0,41, 1,55, 4,64 e 0,95 g m-2) e da precipitação (0, 15, 0,01, 0,94, 0,82 e 0,25 gm-2). Os teores de C e de N, assim como os de Ca, Mg e K de troca, e de P e K extraíveis foram mais elevados sob as copas dos arbustos do que na área fora da sua influência. Os resultados indicam uma elevada capacidade de C. ladanifer para a assimilação de carbono, assim como uma elevada eficiência de utilização de água e nutrientes. Para além disso, as quantidades de nutrientes envolvidas nos fluxos anuais são comparáveis às determinadas para espécies mediterrânicas arbóreas. - Biomass production and seasonal variation of carbon allocation were assessed in a Cistus ladanifer shrubland. Nutrient fluxes in litterfall and water-related pathways along with the effects of shrub presence on soil properties were also examined. Annual biomass production (1038 g m- yr-l) and accumulation (980 g m yr-l) were high, although smaller than those reported for Mediterranean trees. Litterfall mass 451 g m- yr-l) was of the same magnitude than generally found for evergreen and even deciduous forests. A great proportion of biomass production was allocated to foliage (44%) and leaf litter was the main component of litterfall (88%). Nutrient pools in aboveground standing biomass (10.50, 1.41, 6.79, 17.71 e 1.90 g mo, for N, P, K, Ca and Mg, respectively), as well as annual nutrient fluxes to the soil through litterfall (1.72, 0.41, 1.55, 4.64 and 0.95 g m-2) and throughfall (0.15, 0.01, 0.94, 0.82 e 0.25 g m-2) are in the ranges reported for forests. Total organic C and N, as well as exchangeable Ca, Mg and K, and extractable P and K were more concentrated in the soil under the shrubs than in the shrub interspaces. The results indicate that C. ladanifer shrubs have a high carbon assimilation capacity, as well as a high water and nutrient use efficiency. Moreover, annual nutrient fluxes involved are ofthe same magnitude as those found for Mediterranean trees.

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    Authors: Passos, Clotilde;

    A ética tem vindo de forma crescente a ganhar importância e espaço nas organizações e a inovação assume-se cada vez mais como um fator chave da sustentabilidade empresarial. Várias abordagens teóricas, desenvolvidas nos últimos anos, sustentam os inegáveis benefícios, económicos, ambientais, humanos e sociais da ética empresarial. Outras, afirmam que as empresas geram e conservam as suas vantagens competitivas primordialmente através da inovação. Neste contexto, o objetivo deste artigo é propor um modelo conceptual que permita perceber a relação existente entre os dois conceitos e, analisar, em que medida a implementação da gestão ética nas empresas promove a inovação e a sustentabilidade organizacional. A crescente importância da ética e da inovação nas organizações e a necessidade de novos modelos de gestão na economia moderna, justificam o interesse do estudo. Ethics importance has been growing in organizations, and innovation is seen ever more as a key factor in enterprise sustainability. Several theoretical approaches developed in recent years support the undeniable economic, social and human benefits of enterprise ethics. Other approaches sustain that enterprises create and retain their competitive advantages mostly through innovation. On this context, the goal of this article is to propose a conceptual model which allows understanding of the existing relationship between these two concepts, analyzing how the implementation of ethical management in enterprises promotes organizational sustainability and innovation. The growing importance of ethics and innovation in organizations and the need for new management models in modern economy are the reasons for this study.

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    Authors: Lima, Valdeci Candido de;

    This article, focusing on construction technology, investigates and identifies the sustainability of the Amazon rubber tapper's home, built within the rubber tree forest of the Brazilian State of Acre from the late 19th century to the second half of the 20th century. This study also surveys bibliographical information, historical, determinant and constructive facts that attributed meanings to this model of construction, identifying it as sustainable housing. The latex collector was a crude individual, usually a migrant from the country's Northeast, driven by the droughts in the Northeastern backwoods, in search of wealth. When these people reached the Amazon regions to tap rubber trees and produce rubber, they entered the dense and lush forests, rich in rubber trees, Brazil nut trees, bamboo, palm trees and all types of hardwood. It was an unknown world. As a result of a war for latex hegemony, Acre emerged as important to Brazil and the whole world. Lacking a good financial situation and due to the basic needs and memories of their homeland, the rubber tappers built their houses similar to the Amazon native's housing, using raw materials from the forest - such as wood, paxiúba, palm straws, cipó and bamboo - without destroying the environment. They learned how to protect their homes from the storms by interacting with nature through open, integrated and windy spaces. These findings are based on the history of Acre's settlement, and the descriptions of the tappers' homes are evidence of dwellings that are fully self-sustainable. Este artículo, con área de concentración en Tecnología de las Construcciones, se propone investigar e identificar la sostenibilidad de la casa del cauchero amazónico, en las zonas caucheras de estado de Acre, en Brasil, a partir del final del siglo 19 hasta la segunda mitad del siglo 20. Se buscó traer subsidios bibliográficos e históricos, y factores constructivos determinantes, los que han atribuido significados a ese modelo de construcción, y lo han identificado como habitación sostenible. El cauchero, hombre tosco, en su mayoría migrantes, empujados por la sequía del Nordeste brasileño, en busca de riquezas, al llegar a las regiones de la Amazonia para cortar caucho y producir el látex, se introdujo en la enmarañada selva abundante en fauna y flora, un territorio rico en árboles de siringas, castañas, bambúes, palmeras y toda especie de maderas nobles. Era un mundo desconocido. Fue en ese momento, como resultado de la batalla por el control del látex, que el Acre surgió para Brasil y el mundo. Los nordestinos, sin ninguna condición financiera y con las necesidades del inicio de la ocupación, han tomado como modelo la habitación indígena amazónica, a la que han mezclado los recuerdos de las viviendas de sus lugares de origen. Así, fue utilizando técnicas rudimentales que han construido sus casas, cerca de las matas de caucho, con materiales retirados de la selva, tales como la madera y la paja de las palmeras, los bejucos y el bambú, todo sin agredir el medio ambiente. Aprendió a proteger su casa de la intemperie imprimiendo a esta habitación una interacción con la naturaleza, aprovechando los espacios abiertos, integrados y ventilados. Esos datos han sido recogidos de la historia de la creación del Acre, que trae descripciones del modelo arquitectónico de las viviendas que, al final, van a diseñar la casa del cauchero acreano como una habitación sostenible. Este artigo, com área de concentração em tecnologia das construções, propõe-se a pesquisar e identificar a sustentabilidade da casa do seringueiro amazônico, construída nos seringais acreanos, a partir do final do século 19 e segunda metade do século 20. Busca trazer subsídios bibliográficos, históricos e fatores construtivos determinantes, os quais atribuíram significados a esse modelo de construção, identificando-o como habitação sustentável. O seringueiro, homem rude, migrante em sua maioria, tangido pelas secas dos sertões nordestinos, em busca de riquezas, ao chegar às regiões da Amazônia, para cortar seringa e produzir a borracha, embrenhou-se nas densas florestas, ricas em fauna e flora. Um território abundante em seringueiras, castanheiras, bambus, palmeiras e toda espécie de madeiras nobres, um mundo desconhecido. A partir dessa ocupação passa a ser conhecido em decorrência da batalha pelo controle da borracha. Assim, o Acre surge para o Brasil e para o mundo. A população nordestina, sem condição financeira, e considerando as necessidades iniciais na época da ocupação, toma como modelo de habitação a oca indígena, misturando-a às lembranças das casas de seus locais de origem. Desse modo, com técnicas rudimentares construíram, nas colocações dos seringais, suas casas, com matéria-prima retirada da floresta, tais como a madeira, paxiúba, a palha da palmeira, o cipó, o bambu, tudo sem agredir o meio ambiente. Aprendeu a protegê-la das intempéries, imprimindo a essa habitação uma interação com a natureza, por meio de espaços abertos, integrados e ventilados. Esses dados têm como fonte a história de formação do Acre, cujas descrições apresentam o modelo arquitetônico das moradias que, ao final, vão desenhar a casa do seringueiro acreano como habitação sustentável.

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    Authors: Wood Junior, Thomaz; Oliveira, Dafne de;

    Egos Conference 2020 Sustainable development has become a major topic for public policy makers and managers as the impact of human actions on the environment generate increasingly dramatic consequences for society, the economy and for business. In parallel, the debate about alternative business models is growing in academia. Our research is aligned with the above movements. This article describes and analyzes a case of organizing for sustainable development that involved multiple social actors. The research focuses on a project that aimed to define guidelines for carrying out large-scale construction projects in the Amazon. As theoretical lens, we used the concept of territorial governance, defined as the co-joint process of engaging, organizing and coordinating social actors to develop territorial capital and cohesion in a sustainable way. We found that: first, the social technology that was employed in the case, which was based on transparency, strategic communication and convergence construction, was vital to the success of the project; second, the project fostered territorial cohesion and relationships between social actors; and third, the notion of territorial governance can be applied even in areas where the population density is low. We believe that this study makes a contribution to studies on sustainable development and territorial governance, as well as to organizational studies in a broader fashion. The use of territory as the locus of analysis offers opportunities for researchers that are interested in expanding their knowledge of new ways of organizing, especially ways that can provide solutions to grand economic, social and environmental challenges.

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    Authors: Moreira, Heloísa Beatriz Cordeiro;

    Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Pós-graduação em Engenharia Mecânica - FEB Recently, because of the energy crisis, the environmental and economical problems, the politics of incentive of the natural gas and the growing importance of cogeration applications, a growing interest has been obseved toward application of absorption cycles, due to the possibility of energy use, for useful ends, of the residual heat of different processes. Coolers (chillers) of absorption have been used widely in industries of air conditioning, partly because they can be operated by hot water, vapor, natural gas, solar energy, biomass, among other, instead of electricity, since approximately 15% of all the electricity produced is globally used for refrigeration and air conditioning according to the International Institute of Refrigeration in Paris (IIF/IIR). Thir work has as the main objective to evaluate a cycle of refrigeration for absorption with solution of lithium bromide-water using biogas of sanitary landfill and mixtures of this with natural gas. By obtaining the energy potential of the biogas of sanitary landfill, natural gas and their mixtures, using the software Combust, it was simulated with the software EES (Engineering Equation Solver), a cycle of refrigeration for absorption with a refrigerating capacity in the range between 18 and 70 kW, which are actual data of equipment of refrigeration for commercial absorption. The analyses of the results showed that the energy viability of the system using in the generator biogas, natural gas and their mixtures when compared with equipments that use traditional fuels (GN, diesel oil, among other), for operation of equipments of refrigeration (chiller) commercial with capacity of refrigeration of 12900 kcal/h and temperature of the water in the... Recentemente, diante da crise energética, dos problemas ambientais e econômicos, da política de estímulo do gás natural e da importância crescente de aplicações de cogeração, tem-se observado um interesse renovado para aplicação de ciclos de absorção, devido à possibilidade de aproveitamento energético, para fins úteis, do calor residual de diferentes processos. Resfriadores chillers de absorção são extensamente utilizados em indústrias de ar condicionado, em parte porque eles podem ser acionados através de água quente, vapor, queima do gás natural, energia solar, biomassa, dentre outros, em vez de eletricidade3, já que aproximadamente 15% de toda a eletricidade produzida mundialmente é usada para refrigeração e condicionamento de ar de acordo com o Instituto de Refrigeração em Paris (IIF/iir). Este trabalho tem como objetivo principal avaliar o ciclo de refrigeração por absorção com solução de brometo de lítio-água utilizando biogás de aterro sanitário e misturas deste com gás natural. Com a obtenção do potencial energético do biogás de aterro sanitário, gás natural e suas misturas, utilizando o software Combust, simulou-se através do software EES (Engineering Equantion Solver), um ciclo de refrigeração por absorção com capacidade frigorífica variando entre 18 e 70 KW baseando-se em dados de equipamento de refrigeração por absorção comerciais. As análises dos resultados mostraram a viabilidade energética do sistema utilizando no gerador biogás, gás natural e suas misturas quando comparada com equipamento que utiliam combustíveis tradicionais (GN, óleo diesel, dentre outros), para acionamento de equipamentos de refrigeração (chiller) comerciais com capacidade de resfriamento de 12900 Kcal/h e temperatura da água na entrada....

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    Authors: Laranjeiro, Joana Alcaide;

    Dissertação de Mestrado em Reabilitação de Edifícios apresentada à Faculdade de Ciências e Tecnologia A eficiência energética do parque imobiliário é um tema que tem ganho expressão nos últimos anos. O Sistema de Certificação Energética, que surge na sequência da implementação da diretiva europeia EPBD, permitiu estabelecer medidas para atingir os requisitos mínimos relativos à eficiência energética nos edifícios. Porém, existe um grupo de imóveis que estão excluídos deste sistema de certificação como é o caso dos Edifícios de Elevado Valor Patrimonial.Este trabalho teve como objetivo analisar as implicações da adoção de medidas de eficiência energética em intervenções que devem salvaguardar os valores existentes. Para esta análise foi necessário avaliar as Orientações, Cartas e publicações da UNESCO a fim de investigar quais as orientações relacionadas com a salvaguarda dos valores culturais, arquitetónicos e construtivos, assim como a existência ou não de linhas orientadoras quanto ao desempenho e eficiência dos edifícios classificados; a legislação europeia a fim de perceber quais as metas e considerações estabelecidas pela Europa para a diminuição do CO2; e a legislação portuguesa esclarecendo o que é que está abrangido pelo Sistema de Certificação Energética. Foram também estudadas algumas boas práticas de intervenções em edifícios europeus com valor cultural reconhecido.O caso de estudo utilizado para este trabalho foi o Real Colégio das Artes, pertencente ao conjunto Universidade de Coimbra – Alta e Sofia, inserido na Lista de Património Mundial da UNESCO em 2013. Com base na legislação europeia, nacional e orientações da UNESCO, foram traçadas algumas medidas de intervenção que pretendem melhorar a gestão energética do edifício fazendo um equilíbrio entre a preservação dos valores culturais e a eficiência energética.Foi possível constatar que, no caso do Real Colégio das Artes, existem várias opções projetuais passíveis de serem aplicadas para cada um dos elementos construtivos equacionados, com maior ou menor impacto nos valores culturais e arquitetónicos e com maior ou menor resultados ao nível do desempenho térmico. Para este caso específico, é possível afirmar que pode existir uma correlação entre o grau de desempenho energético que se pretende atingir e o seu impacto nos valores culturais e arquitetónicos do edifício. The energy efficienncy of the building stock is a theme that has been developed in recente years. The Energy Certification System, wich follow on from the implementation of the European Directive EPBD, has enabled the establishment of measures to meet the minimum requirements for energy efficiency in Buildings. However, there is a group of buildings that are excluded from this certification system: High-Value Buildings.This paper aimed to analyze the impact of energy efficiency measures in interventions that should safeguard existing values. For this analysis it was necessary to study the UNESCO Guidelines, Letters and Publications in order to know wich guidelines are related to the safeguarding of cultural, architectural and constructive values, as well as the existence or not of guidelines regarding the performance and efficiency of classified buildings. It was necessary to study also European legislation to understand the goals and considerations set by Europe for the reduction of CO2 and Portuguese legislation clarifying what is covered by the Energy Certification System. Some good practices of interventions in European buildings with recognized cultural value were also studied.The case study used in this project was the Royal College of Arts, belonging to the plot Universidade de Coimbra – Alta e Sofia, included in the UNESCO World Heritage List in 2013. Based on European National and UNESCO guidelines, some intervention measures were proposed to improve the energy management of the building by balancing the preservation of cultural values and Energy efficiency.It was possible to realized that in Royal College of Arts, there are several design options that can be applied, with more or less impact on cultural and architectural values and with more or less results in terms of termal performance. For this particular case, it’s possible to say that can exist a correlation between the degree of Energy performance to be achieved and its impact oh the building’s cultural and architectural values.

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    Authors: SOUZA FILHO, João Sales de.;

    Submitted by Lucienne Costa (lucienneferreira@ufcg.edu.br) on 2019-07-30T17:26:15Z No. of bitstreams: 1 JOÃO SALES DE SOUZA FILHO – DISSERTAÇÃO (PPGEQ) 2008.pdf: 1886477 bytes, checksum: a5a898e359e79a05b77f767d8c55e064 (MD5) Made available in DSpace on 2019-07-30T17:26:15Z (GMT). No. of bitstreams: 1 JOÃO SALES DE SOUZA FILHO – DISSERTAÇÃO (PPGEQ) 2008.pdf: 1886477 bytes, checksum: a5a898e359e79a05b77f767d8c55e064 (MD5) Previous issue date: 2008-07-31 Capes O hidrogênio surgiu como uma fonte de energia renovável não poluente, que possivelmente substituirá os combustíveis fósseis. Nesse sentido, este trabalho visa estudar o desempenho de um eletrolisador bipolar para produção de hidrogênio a partir da eletrólise da água, fazendo uso da energia elétrica convencional e energia solar fotovoltaica. O eletrolisador é constituído de 47 células, usando como eletrólito uma solução de KOH, e foi testado inicialmente com a energia elétrica convencional. Observou-se que o sistema teve seu funcionamento ótimo com uma corrente de 42,5 A, e uma tensão de 96,6 V. Isto corresponde a uma potência de 4,10 kW e uma vazão de 0,763 m3/h de hidrogênio. A energia consumida é de 5,37 kWh/m3 de hidrogênio, o que necessitaria de um sistema de energia com 64 painéis que forneceria uma vazão máxima de 0,012 m3/h de hidrogênio por painel. Também foram realizados experimentos com diversas configurações de painéis fotovoltaicos para avaliar o desempenho do eletrolisador. Com 6 painéis conectados em série, a mínima produção de hidrogênio foi obtida com uma tensão de 82,8 V e uma corrente de 1,1 A. Uma máxima produção de hidrogênio de 0,068 m3/h é obtida com uma configuração de 15 painéis solares em série, gerando uma tensão de 90,0 V e uma corrente de 4,49 A. Hydrogen emerges as a clean renewable energy source that will replace fossil fuels. In this way, this work studies the performance of a bipolar electrolyser to produce hydrogen from the water electrolysis, using conventional electricity and photovoltaic solar energy. The electrolyser is constituted of 47 cells working with a KOH solution electrolyte. First, the electrolyser was tested with conventional electricity and showed its best production at a current of 42.5 A and a tension of 96.6 V. This corresponds to a power of 4.10 kW with a hydrogen flow rate of 0.763 m3/h, meaning a energy consumption of 5.67 kWh/m3 which would need 64 photovoltaic panels at a maximum flow rate of 0.012 m3/h.panel. In the second part, the electrolyser is tested with several configurations of photovoltaic panels. With 6 panels connected in series, a minimum hydrogen production is obtained with a tension of 82.8 V and a current of 1,1 A. A maximum hydrogen production of 0,068 m3/h is reached with a solar configuration of 15 panels in series, giving a tension of 90.0 V and a current of 4.49 A.

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    Authors: NASCIMENTO, José Wallace Barbosa do.;

    Submitted by Deyse Queiroz (deysequeirozz@hotmail.com) on 2019-03-06T15:58:18Z No. of bitstreams: 1 JOSÉ WALLACE BARBOSA DO NASCIMENTO - DISSERTAÇÃO PPGEA 1991..pdf: 2804248 bytes, checksum: 2cf2a5bba1f1ab84f979c68e5838ba35 (MD5) Made available in DSpace on 2019-03-06T15:58:18Z (GMT). No. of bitstreams: 1 JOSÉ WALLACE BARBOSA DO NASCIMENTO - DISSERTAÇÃO PPGEA 1991..pdf: 2804248 bytes, checksum: 2cf2a5bba1f1ab84f979c68e5838ba35 (MD5) Previous issue date: 1991 Estudou-se o funcionamento de um motor estacionário com gasogênio de fluxo transversal descendente que aciona um ventilador centrifugo e recebe a energia térmica cedida pelos gases do gaseificador mediante um trocador de calor gás-ar, sendo esta energia utilizada para a secagem dos grãos de milho em camada estacionária. Os dados experimentais foram comparados com os simulados pelos modelos de Hukill e Thompson, usando-se o programa SASG-3 para microcomputador desenvolvido pelo o Núcleo de Tecnologia em Armazenagem. Para os três testes experimentais de secagem de milho, com o resfriamento dos gases, obteve-se temperaturas médias do ar de secagem de 51 e C , 54 "C e 56 *C e vazões de ar de 9,87, 9,30 e 8,69 nrVmin/ m= de secador, respectivamente, sendo as alturas da camada de secagem de 0,50m, 0,30m e 0,50m e teores iniciais de umidade de 24,537., 32,627. e 40,447. em base seca. Concluir que é possível secar, em média, 0,35 tonelada de milho em aproximadamente 11 horas, utilizando-se uma temperatura de 51 a 56 'C proveniente da energia térmica de um gaseificador de fluxo transversal descendente e que os modelos de simulação de secagem de Hukill e Thompson superestimaram os teores de umidades experimentais, em função do tempo. It was investgated the perfomance of a stacionary motor with downword -flow gas gerator which moves a centrifugal fan and receive thermal energy scatterad dor gaseificator gases, beyond thermal energy scattered for gases of motor escape though of heat gases-air, being this energy used for grain drying in stationary layer. The experimental data were compered with simulated data through Hukill and Thompson models, using the 5ASG-3 programa to microcomputer developed by Storage Tecnology Nucleus. For three experimental tests of corn drying, with the gas cooling, it was obtained average temperature of dryng air about 51°C, 54°C and 56°C and air flow about B.B7, 9.30 and 8.65 m3/min/m= of drier, respectively, being the heighs about 0.50 m, 0.30 m and 0.50m and initial moisture contents of 24.53"/., 32.62/i and 40.44X in drier basis. It was concluded that is possible to dry, on average, 0.35 ton of corn in about 11 horas, using temperatures of 51 to 56"C fron thermal energy of a downword transversal flow gaseificator and that tha Hukill and Thompson drying simulate models superestimated the experimental moisture cintent in funcion of the time.

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    Authors: Barbosa, Amanda Saldanha;

    Submitted by Maicon Juliano Schmidt (maicons) on 2015-06-05T16:57:51Z No. of bitstreams: 1 Amanda Saldanha Barbosa.pdf: 1110620 bytes, checksum: ca79658c72904b34bd463d8a587dbd0e (MD5) Made available in DSpace on 2015-06-05T16:57:51Z (GMT). No. of bitstreams: 1 Amanda Saldanha Barbosa.pdf: 1110620 bytes, checksum: ca79658c72904b34bd463d8a587dbd0e (MD5) Previous issue date: 2015-02-25 CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior PROSUP - Programa de Suporte à Pós-Gradução de Instituições de Ensino Particulares UNEMAT - Universidade do Estado de Mato Grosso O conceito de rio continuo (RCC) afirma que ocorrem alterações das características físicas e químicas ao longo do gradiente longitudinal de arroios, o que induz ao acréscimo de espécies de diferentes hábitos alimentares. Neste sentido o objetivo deste estudo é a caracterização trófica de espécies de peixes de cabeceira de arroios subtropicais e a identificação do fluxo de energia entre macroinvertebrados e peixes. Espera-se que a biomassa de peixes detritívoros aumente conforme o gradiente longitudinal, devido ao aumento da produção primaria neste sentido. O estudo foi desenvolvido em 32 sítios de 1ª a 4ª ordem pertencentes a oito microbacias da Bacia do Rio dos Sinos. As coletas de ictiofauna foram realizadas utilizando pesca elétrica em uma área de 100m2. Macroinvertebrados foram coletados com amostrador Surber, para avaliar a disponibilidade de recurso e biomassa de consumidores primários. A riqueza e a diversidade da comunidade íctica foram calculadas. Foi avaliada a dieta das espécies de peixes mais abundantes e calculados os índices de importância relativa e de amplitude de nicho. Para verificar a transferência de energia entre consumidores primários e secundários foi quantificada a biomassa seca de peixes e macroinvertebrados. Os resultados demonstram que a diversidade, a riqueza e a biomassa aumentaram conforme o gradiente longitudinal que arroios de cabeceira, corroborando as previsões do RCC. Também constatou-se que a comunidade íctica é composta por duas guildas alimentares (insetívoros e detritívoros). Estes últimos, por sua vez, elevaram a biomassa íctica e estabeleceram duas vias de fluxo de energia atuando como consumidores primários e secundários. The River Continuum Concept (RCC) suggests that changes in physico-chemical factors across the stream longitudinal gradient leads to the adding of species of different feeding habits. In this sense, the aim of the study is the trophic characterization of fish headwater species from subtropical streams and to identify energy flow between macroinvertebrate and fishes. It is expected that detritivorous fish standing crop increase across stream longitudinal gradient due to increase in primary production in the same direction. This study was carried out in 32 streams from 1st to 4thorder in eight microbasins in the Sinos River basin. Ichthyofauna was sampled with electric fishing in 100m2 sections. Macroinvertebrates were sampled with Surber sampler to assess resource availability and primary consumer standing crop. Richness and diversity of fish communities were also calculated. The diet of the most abundant fish species was assessed as well as relative importance and niche amplitude indexes. The results displayed that fish diversity, richness and standing crop increased across stream longitudinal gradient corroborating RCC postulates. It was also indicated that fish communities was composed by two feeding groups (insetivorous and detritivorous). The detritivorous fishes have in turn increased fish standing crop and established two directions of energy flow which act as both primary and secondary consumers.

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    Authors: Leva, Flavia Fernandes de;

    The aim of this research was to evaluate and compare the behavior of temperature inside poultry sheds with bell jar type gas conventional heating and heating in the floor with use of a heat exchanger. It was used the public domain program FEMM 4.2 for the analysis of temperature through the use of finite elements techniques with data collected from two lots. Heating in the floor is made with the hot water flowing through a heat exchanger, which is installed below the bed; this hot water is from solar heaters. From the results obtained with the simulations can be observed that the heating through the floor provides a more homogeneous distribution breast when compared with the bell jar type heating. The flow of heat is upwards supplying thus the most needed heating of the bird that is the pectoral part. Energy consumption evaluation was made with use of LPG; this has enabled a comparative analysis of the quantity of electric energy necessary to provide the same thermal energy and the financial expenses obtained with the heating though LPG or electric energy for each lot. Essa pesquisa foi conduzida com o objetivo de avaliar e comparar o comportamento da temperatura dentro do galpão avícola com aquecimento convencional tipo campânula a gás com o aquecimento pelo piso com o uso de serpentina. Foi utilizado para a análise do comportamento da temperatura o programa de computador de domínio público FEMM 4.2 que utiliza técnicas de elementos finitos, com base em 2 dos lotes coletados. O aquecimento pelo piso se dá com a utilização de água quente passando por um sistema tipo serpentina, que é instalada abaixo da cama, essa água quente é proveniente de aquecedor solar. A partir dos resultados obtidos com as simulações nota-se que o aquecimento através do piso fornece uma distribuição mais homogênea da temperatura quando comparado com o aquecimento tipo campânula. O fluxo de calor se dá de baixo para cima suprindo assim a necessidade maior de aquecimento da ave que é na parte peitoral. Foi realizada uma avaliação do consumo energético com a utilização do GLP, o que possibilitou uma análise comparativa da quantidade de energia elétrica necessária para fornecer a mesma energia térmica e os gastos financeiros obtidos com o aquecimento via GLP ou energia elétrica para cada lote. Doutor em Ciências

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