Submarine
Mostrando 13-24 de 60 artigos, teses e dissertações.
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13. Métodos de navegação inercial aplicados a lançamentos submarinos. / Inertial navigation methods applied to submarine launching.
A demanda crescente por petróleo impulsiona a exploração marítima desta riqueza para águas cada vez mais profundas. O aumento da lâmina dágua exige novas soluções de engenharia principalmente no que se refere à operação de unidades flutuantes de produção. Dentre os desafios impostos pelos novos ambientes de prospecção, destaca-se o processo d
Publicado em: 2011
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14. Estudo geoquímico e microfaunístico da região circunjacente ao emissário submarino de esgoto das Cigarras, São Sebastião, SP / Geochemistry and microfaunistic study of the area around the submarine outfall of Cigarras, São Sebastião, SP
The influence of submarine outfall of domestic sewage on the benthic foraminifera and sediments quality at Cigarras, São Sebastião, SP, is evaluated in this dissertation. Twenty water and bottom sediment samples were collected around the outfall in September 2006 (ten samples) and 2007 (ten samples). Another two samples were collected in the São Sebastiã
Publicado em: 2010
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15. Influência de efluentes domésticos e petroquímicos em sedimentos e carapaças de foraminíferos do Canal de São Sebastião, SP / Influence of domestic and petrochemical sewage in tests of foraminifera and sediments of the São Sebastião Channel, SP
O presente estudo teve por objetivo avaliar a influência de esgotos domésticos e petroquímicos, dispostos por via de emissário submarino, nas composições físico-químicas e microbiológicas da coluna dágua e na geoquímica dos sedimentos, bem como investigar uma possível relação entre o meio e a composição química das carapaças do foraminífer
Publicado em: 2010
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16. COMPARAÇÃO ENTRE CONTROLES LOOK-AND-MOVE E SERVO-VISUAL UTILIZANDO TRANSFORMADAS SIFT EM MANIPULADORES DO TIPO EYE-IN-HAND / COMPARISON BETWEEN LOOK-AND-MOVE AND VISUAL SERVO CONTROL USING SIFT TRANSFORMS IN EYE-IN-HAND MANIPULATOR SYSTEMS
Computer vision can be used to calibrate and self-localize robots. There are many applications in self-localization and control applied to industrial manipulators and mobile robots. In particular, visual control can be useful in submarine interventions, where a robotic manipulator is mounted on a Remote Operated Vehicle (ROV) to execute tasks at high depths,
Publicado em: 2009
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17. Comportamento à fratura de defeitos circunferenciais em dutos submarinos instalados por bobinamento
This study aims to evaluate the limit of the fracture instability for submarine pipelines installed by the Reeling Method, determining the maximum allowable ductile tearing for use in analysis of structural integrity through correlations with SENT specimens (Single Edge Notched Tension). The Standard DNV-RP-F108, which gives guidance to testing and analysis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2009
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18. CONSIDERATIONS ON THE MODELING OF CONNECTIONS FOR REPAIR OF PIPELINES / CONSIDERAÇÕES SOBRE A MODELAGEM DE CONEXÕES PARA REPARO DE DUTOS
The reduction of pipeline wall thickness caused by corrosion is one of the defects that more affect pipeline structural integrity. These defects can take place in the metal base, in the longitudinal and circumferential welding. With the expansion of the rigid submarine pipelines mesh already installed and considering the advanced time of using, the oil indus
Publicado em: 2008
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19. Marcadores orgânicos de contaminação por esgotos sanitários em sedimentos superficiais da baía de Santos, São Paulo
Organic markers, such as sterols and ketones, were used to assess sewage contamination in sediments from the Santos Bay, SP, and its continental shelf. These compounds were analyzed by GC/FID after soxhlet extraction, clean up and derivatization. The concentration of coprostanol and ratios between selected sterols were used to evaluate fecal contamination. T
Química Nova. Publicado em: 2008
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20. O modelo do sistema viável na concepção da arquitetura de sistemas de informação: aplicação no contexto de incidentes em instalação de pesquisa na área nuclear. / The Viable System Model (VSM) in the conception of information system architectures - an application in the context of incidents for a research nuclear installation.
The present work presents a study aiming to verify the applicability of the Viable System Model (VSM) in a robust architecture for an Information System targeting nuclear naval area. The emphasis of the study is in assessing an alternative modeling for the Information System (IS) architecture specification, incorporating a set of functionalities defined by t
Publicado em: 2008
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21. Development of intelligent controllers for the VASPS system / Desenvolvimento de controladores inteligentes para o sistema VASPS
The oil production scenario has been becoming more and more complex and severe in the recent years. Plenty discoveries in deeper and more diversified formations have been requiring cutting edge technological solutions., such that the production has been deployed side by side with the technological development. Thus, the need for the enhancement of the recupe
Publicado em: 2008
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22. Estimação de posição e quantificação de erro utilizando geometria epipolar entre imagens. / Position estimation and error quantification using epipolar geometry between images.
Position estimation is the direct result of scene reconstruction, one of computer visions fields. It is also an important information for the control of mechanical systems - specially the autonomous robotic systems. As an engineering application, those systemsperformance must be evaluated in terms of efficiency and effectiveness, measured by processing costs
Publicado em: 2007
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23. 228Ra and 226Ra in coastal seawater samples from the Ubatuba region: Brazilian southeastern coastal region
O presente trabalho apresenta os resultados de 226Ra e 228Ra obtidos durante o 4º experimento de intercomparação referente à descarga submarina de água subterrânea (Submarine Groundwater Discharge, SGD) realizado em Ubatuba (SP), em novembro/2003. Este experimento visava testar, em um sistema de rochas cristalinas fraturadas, as diferentes metodologias
Journal of the Brazilian Chemical Society. Publicado em: 2006-08
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24. Mapeamento de recifes no Rio Grande do Norte: Touros e Macau/RN / Mapeamento de recifes no Rio Grande do Norte: Touros e Macau/RN
Studies on the Brazilian continental shelf were developed between Touros and Macau-RN (NE Brazil) with the aim to mapping carbonate buildups, and especially, reef ecosystems. Remote sensing, submarine movies, bathymetric survey and diving were the methods used. This paper will focus on three main aspects of the Rio Grande do Norte reefs: 1) characterization
Publicado em: 2006