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Mostrando 13-24 de 230 artigos, teses e dissertações.
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13. TLP Structural Health Monitoring Based on Vibration Signal of Energy Harvesting System
Abstract Structural Health Monitoring (SHM) of Tension Leg Platform (TLP) is very crucial for preventing catastrophic and sudden collapse of the structures. One of the methods of monitoring these structures is implementing SHM sensors. Supplying energy for these sensors for a long period is a challenging problem. So, one of the new methods of supplying energ
Lat. Am. j. solids struct.. Publicado em: 2016-05
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14. Comparison of the Incident Solar Energy and Battery Storage in a 3U CubeSat Satellite for Different Orientation Scenarios
ABSTRACT In CubeSats, because the size is limited, the estimation of the incident solar energy according to the orbital parameters and satellite attitude is more critical for the design process of the electrical power system. This estimation is helpful either for sizing of the power sources and energy storage or for defining the operation modes of the CubeSa
J. Aerosp. Technol. Manag.. Publicado em: 2016-03
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15. Velocidad de corrosión de una aleación base plomo en una solución de ácido sulfúrico a diferentes temperaturas
Car batteries are not only affected by their use and wear but also by other factors such as electrolyte concentration, water loss and temperature that can be exposed, the latter being the most influential factor causing an increase in the corrosion rate of lead alloys (battery components), and affecting their service time. Therefore, for the industry of auto
Matéria (Rio J.). Publicado em: 2014-06
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16. Acúmulo de cargas elétricas em propelente sólido compósito com matriz de polibutadieno líquido hidroxilado
Composite solid propellants prepared with HTPB prepolymer - Hydroxyl Terminated Polybutadiene, AP - Ammonium Perchlorate as oxidizer and aluminum particles as an additive metal, have characteristics of high electrical resistivity. The loading process of the polymer matrix did not obtain homogeneity, resulting in clusters, mainly of metal particles. The effec
Quím. Nova. Publicado em: 2014
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17. Inovação para a sustentabilidade
The transition to sustainable standards of production and consumption within a scenario of decreased availability of natural resources, growing population and climate change is essential to meet current challenges facing mankind. A strategy to meet these challenges should contain elements different from current approaches for industrial production. This work
Quím. Nova. Publicado em: 2013
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18. Diferenciação da cobrança pelo uso de recursos hídricos no setor rural em função do custo de produção de uma cultura e a vazão captada / Differentiation of charging for the use of water resources in rural areas due to the cost of crop production and water drawn flow
A Lei nº 9.433/1997 institui a Política Nacional de Recursos Hídricos e cria o Sistema Nacional de Gerenciamento de Recursos Hídricos. Essa estabelece instrumentos que possibilitam a sua implementação e tem como fundamentos estimular a racionalização do uso dos recursos hídricos, o entendimento da água como bem dotado de valor econômico, o uso mú
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/10/2012
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19. Development and evaluation of a range anxiety - reducing business model for connected full electric vehicles
This thesis develops and evaluates a business model for connected full electric vehicles (FEV) for the European market. Despite a promoting political environment, various barriers have thus far prevented the FEV from becoming a mass-market vehicle. Besides cost, the most noteworthy of these barriers is represented by range anxiety, a product of FEVs’ limit
Publicado em: 27/09/2012
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20. Fabricação e caracterização de dispositivos baseados em nanofitas de Óxido de Estanho (SnO2)
The structural and transport features of tin oxide nanobelts synthesized by the vapor-solid method combined with the carbothermal reduction process were investigated in this work. The samples synthesized were characterized by using experimental techniques such as scanning and transmission electron microscopy and x-ray diffraction. The nanobelts were found to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/08/2012
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21. SOUND SYMBOLISM IN THE LETTERS EXCHANGED BETWEEN GUIMARÃES ROSA AND HIS TRANSLATORS / SIMBOLISMO SONORO NA CORRESPONDÊNCIA DE GUIMARÃES ROSA COM SEUS TRADUTORES
This work examines the letters exchanged between Guimarães Rosa and his German, Italian and American translators,aiming to apprehend and analyse Rosa s perspectives on sound symbolism. It examines the reflections on the theme that can be inferred from (a) the general considerations that Rosa elaborates in the body of the letters sent to his translators, and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2012
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22. Valoração, cobrança pelo uso da água e a gestão das bacias hidrográficas do Alto Iguaçu e afluentes do Alto Ribeira : uma abordagem econômico-ecológica / Valuation, charging for water use and managemente of Alto Iguaçu and tributaries of the Alto Ribeira watersheds : an economic-ecological approach
The degradation of the natural system throughout the century XX can be characterized by the upward trend and close relationship with the scale of economic activity, which requires increasing amounts of natural resources as a source of inputs as a source for the absorption of waste. Thus, what was once considered a good or service provided free by the natural
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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23. Credit card risk behavior on college campuses: evidence from Brazil
College students frequently show they have little skill when it comes to using a credit card in a responsible manner. This article deals with this issue in an emerging market and in a pioneering manner. University students (n = 769) in São Paulo, Brazil's main financial center, replied to a questionnaire about their credit card use habits. Using Logit model
BAR - Brazilian Administration Review. Publicado em: 2012-09
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24. A gestão hídrica no estado de Roraima a partir da utilização de instrumentos econômicos
Nowadays, economic science has applied concepts and theories in environmental issues for the better use of natural resources, aiming at sustainable development, i.e. ensuring that future generations can also have the environment. The economy has tools that can be used in water management to optimize water use and preserve the environment. International exper
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012