Closed Cycle
Mostrando 13-24 de 100 artigos, teses e dissertações.
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13. Aeroelastic modeling and experimental analysis of a flexible wing for wind tunnel flutter test.
The objective of this work is to investigate the flutter phenomena experimentally, which will unify high aspect ratio wings design for wind tunnel flutter tests (Dowell and Tang, 2002), cheaper aeroelastic models construction and a procedure used by Sheta, Harrand, Thompson and Strganac (2002) to identify the flutter onset power spectral density versus the f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/12/2010
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14. Composição isotópica e fluxos de CO2 em área de Cerrado (Parque Estadual de Vassununga, SP) / Isotopic composition and carbon dioxide fluxes in an area of Cerrado (State Park of Vassununga, SP)
The presente study was carreid out in area o Cerrado strictu senso located at the State Park of Vassununga, closed to the Santa Rita do Passa Quatro city, São Paulo State, Brazil. The aim was of the present work was to measure de CO2 fluxes released through respiration processes of the vegetation and soil (heterotrophic and autotrophic) to check the relativ
Publicado em: 2010
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15. O uso de imagens do Sensor Aster no mapeamento de unidades vulcano-sedimentares do Platô da Ramada, Vila Nova do Sul, RS
The remote sensing products which are generated by orbitals sensors of middle spatial and spectral resolution and the development of new technique of digital image processing has been a auxiliary tool in the basic geological surveys. In this work was utilized images obtained from the ASTER sensor (Advanced Spaceborne Thermal Emission and Reflection Radiomete
Publicado em: 2010
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16. Study of reuse and recycling of rapid filter backwash water from water treatment plant in independent close cycle system / Estudo de reuso e reciclagem de agua de lavagem de filtro rapido de estação de tratamento de agua, em sistema de ciclo fechado, independente
The project was developed with the aim of studying the treatment and the reuse of rapid filter backwash water for recycling in this role, within a closed cycle, under system independent of production activities of a water treatment plant. The system was assembled with a polymer blending unit, a gravel preliminary upflow filter and a dual layer filter(F3), si
Publicado em: 2009
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17. Caracterização e dimensionamento de um sistema de cabotagem industrial. / Characterization and sizing of a industrial short sea system.
Surgiu em 2003 no Brasil uma modalidade de transporte aquaviário, destinada à movimentação de madeira na costa do país, cuja frota de embarcações navega entre dois portos, geralmente com carga em um sentido e vazio em outro. Esta modalidade permite a operação com um pequeno tempo de parada nos portos, operando com poucas interrupções e movimentand
Publicado em: 2009
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18. Estudo de reação da resina fenolica sob pressão / Study of phenolic resin reaction under pressure
This study analyzes a phenol formaldehyde resin and to develop it in order to reach a time reduction in the cycle time and, in second plane, to evaluate if it improves the resin characteristics in the application. The study concentrated on the condensation step, where the formation of the chain of polymer occurs. The comparison between the reaction of the ph
Publicado em: 2008
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19. Abordagens industriais ambientais : solucionar problemas de poluição ou buscar sustentabilidade ambiental? / The industrial environmental approaches : solving pollution problems or searching for environmental sustainability?
The industrial sector has began, in the 21st century, to rethink and redesign its production processes aiming to minimize natural resources depletion, to foster the use of environmental friendly materials, to research the impact related to the products throughout their life cycle, and to recognize the interdependence between environment and industrial system
Publicado em: 2008
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20. Um processo de formação continuada: das necessidades formativas às possibilidades de formação
The social, politics e economics changes that it comes in the last few decades accruing in our society have affected the education, the schools and specifically the teachers job. The professional knowledge acquired in the courses of initial formation shows off, usually, insufficient to answer to the challenges that the teacher finds in its teachers practice
Publicado em: 2008
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21. Ocorrência e bionomia de Ctenarytaina eucalypti (Maskell) (Hemiptera: Psyllidae) e seu inimigo natural Psyllaephagus pilosus Noyes (Hymenoptera: Encyrtidae) em plantas de Eucalyptus globulus / Occurrence and bionomy of Ctenarytaina eucalypti (Maskell) (Hemiptera: Psyllidae) and its natural enemy Psyllaephagus pilosus Noyes (Hymenoptera: Encyrtidae) in plants of Eucalyptus globulus.
Species of the genus Eucalyptus hosting several species of insects of the family Psyllidae. Among them, the specie Ctenarytaina eucalypti (Maskell) (Hemiptera: Psyllidae) is considered the most harmful, causing damage to culture wherever it has been introduced. To control these hemiptera phytophage, treatment with insecticides proved to be costly and unsusta
Publicado em: 2008
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22. Cyclical temporal variation in fish assemblages at one continental and one insular sandy beaches in the Sepetiba bay. / Variações temporais cíclicas nas assembléias de peixes de uma praia continental e uma insular na baía de Sepetiba.
Bays are semi-closed coastal systems that have beaches whose environmental characteristics, location and degree of anthropogenic influences determine fish assemblages that recruit in these systems and are modeled by seasonal e short term cyclical variation. Two sandy beaches in the outer zone of Sepetiba bay were sampled throughout seasonal, daily and tide c
Publicado em: 2008
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23. SUBSÍDIOS PARA O PLANEJAMENTO DA PRODUÇÃO DE Pinus elliottii Engelm. NA SERRA DO SUDESTE, RIO GRANDE DO SUL / ALLOWANCES FOR PLANNING THE PRODUCTION OF Pinus elliottii Engelm. IN SERRA DO SUDESTE, RIO GRANDE DO SUL
In Rio Grande do Sul, the Serra do Sudeste has been the target of large forest investments due to government programs for sectorial regional development in the three levels of the administration. One of the species with the largest planted area in the region is the Pinus elliottii Engelm. Two large neighboring counties with typical physiography areas of Serr
Publicado em: 2008
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24. Políticas públicas, educação, juventude e violência da escola : quais as dinâmicas entre os diversos atores envolvidos?
The present relates to Violence in School according three aspects: youth of popular urban groups; violence in school and education particularly referring to a medium cycle and public school. As effect of process of social fragmentation and economic and social exclusion, it has arisen practices of violence as a social rule of wide groups present in multiple d
Publicado em: 2007