999 resultados para Elica, motore elettrico, sensori, banco prova
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The knowledge of the dynamics of soil seed bank and seed rain is fundamental to understand the forest succession process, as well as for its conservation and restoration. This paper aimed at studying the role of the soil seed bank and seed rain in the dynamics of a riparian tropical seasonal forest fragment located on the hinterland of São Paulo State. The seed rain was studied by 30 litter traps installed at 50 cm from the floor, with an area of 50 cm x 50 cm. Between November of 2008 and October of 2009, 11364 seeds of 82 species belonging to 33 different families were collected. The deposition density of seeds was 126.27 individuals.m². With the data obtained from this research, the two seasons couldn’t be differed from each other hence 2009 was an atypical year considering the precipitation, which was constantly elevated. For the soil seed bank, fifty superficial soil samples will be taken at the end of both the rainy and dry seasons. The germination method was applied for the data analysis. It was observed a predominance of herbaceous habit species, with an average of 71% of the germinations in both seasons. The Sφrensen similarity index between the seasons was low (0,27). The density and species diversity were higher after the rainy season, unlike other published researches
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The need to know and to preserve the coastal ecosystems is justified by the whole importance that those ecosystems have for our society. Then, it is big the concern in guaranteeing that those places stay free from contaminations. Among the several types of potentials pollutants that can affect the coastal systems, the petroleum-derived are the ones that cause the worst impacts, given the frequency of these accidents. Rapid actions are necessary in order to minimize the oil negative effects . This answer is faster when the most sensitive areas are known and when it presents characteristics of larger importance, as for instance, the presence of sea harvesting or the habitat of an endemic specie. Besides, it is necessary to know which cleanup methods are recommended and which are not recommended for the reached areas, so, the corrected emergency plans for each coastal environment can be applied. It is in this context that this project was developed, implementing a geographical database for the different coastal environment of São Sebastião municipality, SP, and also the data about the best cleanup techniques for each segment of the coast. This database was made available by the internet, enabling the access for several types of users.
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Diante do fato da existência de inúmeros diásporos preservados em exsicatas nos herbários e da necessidade de se desenvolverem novas práticas conservacionistas esta pesquisa buscou avaliar a capacidade de um herbário de atuar como banco de germoplasma complemetar através da propagação de espécies vegetais pela germinação sementes retiradas de exsicatas. O estudo teve como foco espécies típicas do cerrado lato sensu, pois estas tiveram uma trajetória evolutiva com pressões de queimadas naturais, o que provavelmente proporciona às sementes destas espécies maior resistência à dessecassão provocada pelo processo de herborização. Foram utilizados apenas propágulos que apresentavam maturação completa no momento de coleta. Estes provieram de duplicatas do herbário ESA (sediado na ESALQ - USP – Piracicaba). Os testes de germinação foram realizados em substrato de vermiculita fina peneirada, previamente esterelizada, e conduzidos em câmaras de germinação tipo B.O.D. (Biochemical Oxygen Demand) sob fotoperíodo por 24 horas e temperatura constante de 25°C. Estes foram mantido e avaliados 3 vezes por semana durante 60 dias. A pesquisa abrangeu 80 espécies, 25 famílias e um total de 1346 sementes. O N amostral de cada espécie variou de 1 a 30, dependendo da disponibilidade do material. Não foram realizados métodos de quebra de dormência, mas mesmo assim praticamente todas as sementes apresentaram embebissão, com excessão de 8 sementes de Stryphnodendron adstringens. Sementes de cinco espécies germinaram, o que representa que representam 6,25% (N=80) do total de espécies. Elas petencem à duas famílias: Cochlospermum regium e Cochlospermum vitifolium da família Bixaceae e Bowdichia virgiloides, Hymenaea stigonocarpa e Stryphnodendron adstringens da família Fabaceae. A germinação ocorreu entre 10 e 30 dias após a montagem dos testes... (Resumo completo, clicar acesso eletrônico abaixo)
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O capítulo 1 trará as mais importantes correntes teóricas sobre inflação, desde meados do século XX até o fim deste século. Também será demonstrado o pensamento da corrente Cepalina, mais especificamente os autores brasileiros que escrevem acerca da inflação que era observada no período (década de 1980). Assim, chegaremos a como se é formulado o regime de metas de inflação. Após isso, foi efetuada uma cronologia desde a implementação do plano real no Brasil até a inserção do regime de metas de inflação em 1999. O capítulo 2 tem como seu conteúdo principal abordar a eficácia do regime de metas de inflação. Para isso, trará um modelo estatístico, mostrando e interpretando os resultados obtidos. Após isso, o capítulo trará um panorama geral de como evoluiu o regime de metas de inflação no Brasil nos anos em que o trabalho se situa. Na conclusão, serão trazidos os principais questionamentos do trabalho, bem como as respostas encontradas para este e os eventuais desafios que um aprofundamento maior poderá acarretar
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Over the last decades changes have occurred in communication within and between enterprises, made easier by technologies suchas E-commerce, Internet, ERP systems and remote meetings and there was a rapid progress in network technology, which has changed the way business is done. A standardized way to offer services over the internet is using web services. Web services are a kind of remote procedure call and are generally used to integrate systems, independent of language, both client and server. It is common to use several web services run in sequence to perform a business process. To this type of process, gives the name of workflow. Thus, Web services are the primary components of workflows. A tool that provides a way of visualizing the behavior of a workflow can assist the administrator and is required. The present work presents the development of a tool that allows the administrator to classify visually services components and evaluate their importance in the final performance of a workflow. As proof of concept we used several virtual servers and computers where each computer has received a set of web services. A proxy was added between each call of workflows collecting relevant information and storing them in a database for later analysis. The analysis was based on Quality of Service parameters
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The use of electricity for obtaining light has been quite an issue currently discussed, either through new technologies that are emerging, the quest for greater efficiency, reduced waste and rational use. This work comprises a lighting design applied to a metallurgical based Brazilian Standard 5413 which mentions levels of luminance for interior and, in the case of this work, for a sandblasting booth. Ways to improve the workplace and luminosity presented before the project and also after its implementation are discussed. Technologies are chosen guided by technical calculations according to the illuminance values they want to reach for the environment studied. All pertinent design features are critically analyzed and discussed, and at the end proposals are presented, relating to each other in a comparative framework, so the best solution is applied in a practical way in the enclosure. Results are also presented concerning the maintenance of a bank of capacitors to correct the power factor for the metals studied company
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Pós-graduação em Medicina Veterinária - FCAV
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O presente trabalho propõe uma reflexão que é uma tentativa de resgatar a matriz temática do estrangeiro como questão relacionada com a própria estrutura do texto literário. Essa relação parte essencialmente da noção de alteridade, ou seja, da relação com o outro – o estranho-estrangeiro da obra no original – e que está presente desde o momento de sua gênese. Um exemplo concreto do desafio que se apresenta ao tradutor será analisado a partir do próprio título da obra em questão: L’épreuve de l’étranger nos coloca num impasse – é a experiência, ou a prova? Do estrangeiro ou do estranho?
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The success obtained by the Toyota Company in implementing the Toyota Production System was a global case of study that generated different new approaches, such as Lean Thinking. This approach was already successfully applied to various sectors, breeding methodologies as Lean Service, Lean Office or Lean IT. In this paper, the main concepts of Lean Thinking were applied in an information flow through an action research, more specifically in the sending and return of mailing process from a bank. The objectives were to create changes that led to the decrease of the mail returning indexes and ultimately to cost reduction and waste elimination. For this purpose the actual situation was mapped, and after data collection and analysis, a future proposed state was generated for the information flow. Alongside, indicators were conceived for managing process control and a set of implemented and proposed improvements were delivered. The applied Lean Thinking concepts were considered efficient for the application, and the proposed objectives were achieved
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Introduces technical, economic and environmentally competitive solutions in the energy market is a great challenge for society. This work examines each of these aspects considering the production of electrolytic hydrogen with energy from wind power, solar and hydropower, in order to ensure an overview of this energy carrier. Initially, an assessment of the technical aspects is made addressing existing electrolysers technologies, its main characteristics and differences. The geographical distribution of wind, solar and hydroelectric potential in Brazil is also mapped, and a configuration scheme of a hydrogen production system is discussed. Subsequently, the economic analysis calculates the cost of investment in the alkaline electrolyser of 60 Nm³ / h, similar to the Brazilian bus powered by hydrogen project, coordinated by EMTU. Since the main input of electrolysis is electricity, is analyzed the latest energy auctions of each primary source and it is calculated the cost of production of the wind, solar and hydropower hydrogen. Postponed to this, are investigated the intrinsic environmental impacts of electricity generation process, proposing a readjustment of an indicator of ecological efficiency for the production of hydrogen. Finally, the work discusses the concept of externalities and demonstrates how the incorporation of external costs can leverage the hydrogen economy. In short, it is evident that the wind and hydroelectric hydrogens are more promising compared to solar hydrogen, whether in the economic aspect, because it achieved lower costs, whether in the environmental aspect, because it reached the highest ecological efficiency
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The search for more reliable security systems and information management of these systems is leading to a growing progress in new technologies investments that allow the implementation of equipment with a high level of reliability, but also have an agile and practical operation. This led people to turn increasingly looking for home automation systems, enterprise and industry for the automation and integration of their systems. The identification by radio frequency is very widespread today for ensuring both agility in handling records data, the reliability of their identification systems, which are increasingly advanced and less susceptible to fraud. Attached to this technology, the use of the database is always very important for the storage of information collected, the area where the MySQL platform is widely used. Using the open source Arduino platform for programming and manipulation of RFID module and LabVIEW software for the union of all these technologies and to develop a user-friendly interface, you can create a highly reliable access control and agility places a high turnover of people. This project aims to prove the advantages of using all these technologies working together, thus improving a flawed system effectively safety, cheaper and quicker
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Pós-graduação em Ciências Sociais - FFC
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Pós-graduação em Odontologia Preventiva e Social - FOA
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The renewable energy sources presents an important role on the world's current context, its growing is essentially connected to the environmental issues and the energetic security, guided by the search for alternatives of energy. Among the alternative energy sources, the wind energy shows great importance in the brazilian territory, it has a great potential still unexplored and constant growth in the national electric matrix. The specific factor of generation, the conjuncture and the incentive politics influence on the expansion of wind energy in Brazil. Thus, the brazilian wind sector shows features which can be evaluated enable its developing. Keeping that in mind, the present work aims identify which are the advantages and the difficulties for the expansion of this energy source in the brazilian electric matrix. For that, the work studies the different parameters: features of electric generation of the different energy sources, incentive politics, generation costs, CO2 emission, evolution of wind energy in Brazil, the brazilian wind potential, and the regime of complementarily hydro-wind