993 resultados para Monocouche auto-assemblée


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Geonoma é um dos mais complexos gêneros de palmeiras neotropicais e possui aproximadamente 80 espécies distribuídas nos Neotrópicos. Espécies desse gênero apresentam pequeno a médio porte e são típicas de sub-bosque de florestas em áreas com grande pluviosidade. Este trabalho teve como objetivo analisar a auto-ecologia de Geonoma gamiova em duas escalas espaciais, relacionando sua estrutura populacional entre hábitats (fundo de vale x encosta) e microsítios (local de ocorrência clonal). O trabalho foi realizado no núcleo São Miguel Arcanjo do Parque Estadual Carlos Botelho que possui uma área de 37.794 ha e uma amplitude altitudinal de 50 a 975 metros. A área apresenta relevo de montanhas com vales profundos e morros paralelos e a vegetação presente no Parque é a Floresta Ombrófila Densa. Foram distribuídas 30 parcelas de 5 x 20m em três trilhas no Parque, onde foram quantificados os indivíduos de Geonoma gamiova em três estágios de desenvolvimento e foi caracterizado o hábitat. Foram marcados 42 indivíduos de Geonoma gamiova para avaliar o crescimento vegetativo e sua ecologia reprodutiva, avaliando-se também a estrutura dos microsítios em que esses indivíduos se encontravam. Os indivíduos apresentaram uma distribuição de tamanho populacional em forma de J invertido. Geonoma gamiova foi a segunda palmeira mais abundante na área estudada. O tamanho das moitas foi maior no fundo de vale, porém, os parâmetros mensurados para verificar a estrutura de comunidade, assim como a abundância dos indivíduos de G. gamiova não apresentaram diferença significativa (p > 0,05) entre os hábitats. Não houve nenhuma correlação significativa (p > 0,05) entre o número de estipes por moita e as variáveis microclimáticas e edáficas mensuradas. O crescimento dos estipes, avaliado pelo aumento do número de nós, apresentou diferença significativa, sendo maior.... (Resumo completo, clicar acesso eletrônico abaixo)

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The purpose of this project is to verify whether anaerobic reactors applied to sewage treatment are energetically self-sufficient. This evaluation can be made by balancing the methane produced through the anaerobic transformation stages (hydrolysis, acidogenesis, acetogenesis and methanogenesis) and the reactor energy consumption requirements. The original project included methanogenic activity tests, which could not be performed due to setbacks in the installation of an analytical instrument. Scientific articles about bench- and full-scale anaerobic reactors were investigated instead. An average substrate-to-methane conversion efficiency of 58,2±18,6% was found for the bench-scale reactors and higher efficiencies (89,2%) were found for the cases which had higher Organic Loading Rates (OLRs) values. The average energy output was 0,013 kWh/Lsewage, value unable to meet the energy needs for the reactor operation, considering equipments normally used such as temperature controller. This balance can become positive if few hypotheses are made, for example (i) to eliminate the use of temperature controller (ii) to alter the operation pattern from continuous to intermittent. Based on energy balance assessment of eight bench-scale reactors, it was observed that the implementation of a system for biogas utilization is not energetically feasible. However, interesting results were found for a full-scale sewage treatment plant, ETE Ouro Verde – Foz do Iguaçu, PR, Brazil. Even though its substrate-tomethane conversion efficiency was about 10% only, the energy balance was quite positive, with energy consumption of 68 kWh/month and energy production of 660 kWh/month. This analysis leads us to conclude that energy recovery from full-scale sewage treatment plants should be practiced by other plants

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This project aimed to analyze the feasibility of the methane yield associated to the anaerobic digestion of brewery residues, checking whether the energetic balance of the system is favorable. The methane yield efficiency was calculated for the parameters of two papers that treated solids with a particle-size <1mm. Theses solids are not degraded in conventional treatment systems. Calculations were based in the reactions of anaerobic degradation of the macromolecules that compose brewery residues, considering the theoretical production and the effective production of methane. The results were 50.44% and 52.86%. Regarding to the energy balance of the anaerobic treatment, we noted the high influence of the selection and operating regime of electrical equipment over the potential energy. The best situation, in which the energetic self-sufficiency was reached, was observed when using the mixer under an intermittent regime (1min/h), without employing the heating recirculator, for the maximum organic loading of 4.0 gVS/L.day (days 248-258). In this case, the system would generate an amount of energy equal to 0.0356 kWh/day, able to overcome the energy required by the equipment in about 6.5 times. Moreover, we also noted the interference of the application of different solid loadings in the reactors, once the application of the higher organic load generated 5 times more energy than the application of the smaller one

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This study aimed at evaluating the perception of leprosy patients, the disease, with regard to its concept and self-care practice, as well as their knowledge concerning drug therapy. Fifteen patients participated in the study, of whom 11 were classified as multibacillary and 04 as paucibacillary. Semi-structure interviews containing six guiding questions were used for data collection, and the Collective Subject Discourse (CSD) was utilized as a theoretical framework. Analysis was performed based on the Theory of Complexity. It showed that patients suffer pain, a fact that is reflected on the need to change habits and prevent disability. It also showed that patients have doubts and feel insecure about treatment and prognosis, and that they are also the target of social prejudice even thought the term leprosy has been replaced by Hansen‟s disease. As regards self-care, the subjects showed lack of autonomy, limitations and subjection to instructions from health care professionals, who, according to the discourse that emerged, are mostly responsible for transmitting the knowledge concerning self-care practice. This fact can be explained by evidence of self-knowledge deficit by the the subjects. Concerning polychemotherapy treatment, which is recommended by the Ministry of Health, it was observed that the knowledge concerning its action and adverse effects is precarious. This information is provided during consultation; however, CSD showed that the subjects do not apprehend it. Therefore, health care professionals must instruct their clients not only as regards conventional treatment practices, but they must also help them to know themselves and to improve their critical judgment so that they can choose the best form of living after being diagnosed with the disease, thus guiding self-care by taking such choice into account

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In 2008 the United States had suffered from a financial crisis due to the real estate market, this movement affected other countries whose economy depends on the USA. Brazil suffered this crisis, but to avoid a greater turmoil in national territory the government launched some public policies to allow the market to keep working, that way allowing a cash flow more stable. One of these policies is called Inovar-Auto where automakers get benefits in form of taxes redution since some investiments are made in tecnology in Brazil made. This study does a qualitative reaserch to identify how companies are adapting to the Inovar-Auto, its dificulties and the real benefits trough colected data along these years

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This work deals with the stages of the process of renewal of a Notice of Inspection of Fire Department (AVCB) set of structural measures, technical and organizational integrated to ensure the building an optimum level of protection in the security segment fire and panic according to the laws of fire safety standards. The work presented all the literature about the process, their justifications to force deploy in a company to fire safety, the benefits that this standard offers, the facilities in a company that has a AVCB and the great importance in society, presents some examples where there contained the fire safety regulations and their unhappy outcomes, difficulties encountered, examples of how to proceed, step by step and the lesson that this process requires great care, dedication, professionals with the required knowledge and severity to completion

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Engenharia Civil - FEIS

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This work deals with the stages of the process of renewal of a Notice of Inspection of Fire Department (AVCB) set of structural measures, technical and organizational integrated to ensure the building an optimum level of protection in the security segment fire and panic according to the laws of fire safety standards. The work presented all the literature about the process, their justifications to force deploy in a company to fire safety, the benefits that this standard offers, the facilities in a company that has a AVCB and the great importance in society, presents some examples where there contained the fire safety regulations and their unhappy outcomes, difficulties encountered, examples of how to proceed, step by step and the lesson that this process requires great care, dedication, professionals with the required knowledge and severity to completion

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)