Oil Peak
Mostrando 25-36 de 65 artigos, teses e dissertações.
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25. Numerical Simulation of Accidental Explosions in Offshore Production Plant
The production of oil and gas is an inherently hazardous task. Therefore it is crucial to provide reliable estimates of the risks involved. The major contributors to the risk level of an offshore installation, for example, arise from accidents involving explosion and fire. Computational Fluid Dynamics (CFD) can be a powerful tool to help with the calculation
Publicado em: 2009
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26. Microestrutura e deformação a quente de um aço dinx20cr13 na laminação de tubos sem costura
The DIN X20Cr13 stainless steel is a high technological alloy usually used in oil industry for onshore and offshore tubing applications. In this study DIN X20Cr13 equilibrium diagrams were made by Thermo-Calc software to study transformation reactions in solid state phases. This stainless steel was submitted to different heat treatments in order to generate
Publicado em: 2008
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27. Preliminary study of the influence of CO2 extraction conditions on the ester, aldehyde, ketone and hydrocarbon content of grape bagasses from jam production
The main objective of this work was to assess the influence of temperature and pressure on the chemical characteristics of the essential oil obtained from CO2 extraction of grape bagasses in the production of jam. The experiments were performed in a laboratory-scale unit, where the effect of temperature (290 and 303 K) and pressure (15 and 25 Mpa) was invest
Brazilian Journal of Chemical Engineering. Publicado em: 2007-12
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28. Petróleo e segurança internacional : aspectos globais e regionais das disputas por petróleo na África Subsaariana
A importância do petróleo tem sido revisada nos últimos anos, principalmente pelo reconhecimento de sua função estratégico-militar, tanto no século XX, onde o controle sobre este recurso permitiu a ascensão de grandes potências, como em alguns dos conflitos atuais. Estes passaram a incluir a África nas disputas globais por petróleo. O contexto mun
Publicado em: 2007
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29. Longitudinal evaluation of repellent activity of Ocimum gratissimum (Labiatae) volatile oil against Simulium damnosum
To determine the repellent activity of Ocimum gratissimum volatile oil against Simulium damnosum (blackflies), a 12 month (January-December 2003) field study was conducted in three onchocerciasis endemic communities (Idomido, Obio camp, and Ikot Adaha) in Ini Local Government Area of Akwa Ibom State, Nigeria. The result revealed that topical application of 2
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-03
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30. Coffee peel extract and thyme oil in the control of Cercospora coffeicola Berk &Cooke in coffee / Extrato de casca de cafà e Ãleo de tomilho no controle de Cercospora coffeicola Berk &Cooke em cafeeiro
The objectives of this work were: (i) to assess the effect of different doses of coffee berry husk extract (CHE) and thyme essential oil (TEO) on the germination and mycelial growth of Cercospora coffeicola; (ii) to assess the efficiency of CHE and TEO as possible resistance inducers in green house conditions; (iii) to biochemically characterize the effects
Publicado em: 2006
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31. Composição e atividade antifúngica do óleo essencial de hortelã-pimenta (Mentha piperita L.) / Composition and antifungal activity of pepper mint (Mentha piperita L.) essential oil
Pepper mint (Mentha piperita L.) essential oil (EO), obtained by hydro distillation of dry leaves, was evaluated in vitro through a poison food assay (0.1; 0.2 and 0.3%) presented antifungal activity against Aspergillus flavus, A. ochraceous, A. niger, A. glaucus, Fusarium oxysporum, F. semitectum, Colletotrichum musae and C. gloeosporioides. The EO was frac
Publicado em: 2006
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32. Emergy analysis of "Fazenda Ipanema" settlement : land reform and sustainable development. / Analise emergetica do assentamento Fazenda Ipanema : reforma agraria e desenvolvimento sustentavel.
The food availability from the so called "industrial" agriculture depends on a constant flow of materials, specially fossil energy. Experts believe we are in the maximum peak of the oil production which is expected to start decreasing soon. Industrial agriculture becomes more fragile due to increasing of oil crisis, facing the risk of total lack of food supp
Publicado em: 2006
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33. Estudo da interferência de diferentes dietas nutricionais sobre as ações antiinflamatória e analgésica do Etoricoxib (Arcóxia) / Study of the interference of different nutritional diets in the anti-inflammatory and analgesic actions of Etoricoxib (Arcoxia)
Etoricoxib is a new medicine expected to lead the next generation of selective inhibitors of COX-2 Presently the focus of many clinical assays it is a potent fast-action second generation coxib and the most selective of all The purpose of this study was to evaluate the interference of different nutritional diets in the anti-inflammatory and analgesic actions
Publicado em: 2006
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34. PRESSURE DROP IN AXIAL FLOW THROUGH ANNULAR REGION WITH INNER CYLINDER ROTATION / QUEDA DE PRESSÃO EM ESCOAMENTO AXIAL ATRAVÉS DE REGIÃO ANULAR COM ROTAÇÃO DO CILINDRO INTERNO
The present work investigated the pressure drop generated by the flow through an annular configuration with rotation of the inner cylinder. The motivation for the work comes from the several industrial application of the configuration, such as chemical reactors, filters and in drilling operations for oil and gas wells. The experimental study was conducted in
Publicado em: 2005
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35. PolinizaÃÃo e fenologia reprodutiva de Byrsonima gardnerana A. Juss. (Malpighiaceae) em Ãrea de Caatinga/Nordeste do Brasil
The flowers, which offer onlu oil as floral reward for their pollinators or pollen added to oil, are agrouped in nine families (Iridaceea e Orchidaceae â Monocots; Cucurbitaceae, Primulaceae, Krameriaceae, Malpighiaceae, Solanaceae, Calceolariaceae e Plantaginaceae - Eudicots), 79 genera and about 2.400 species, and are widespread for the entire world. The
Publicado em: 2004
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36. Desenvolvimento de uma sistematica para SPME-GC com injetores de controle eletronico
In this work the effects of the injection parameters for the application of Gas Chromatography with Pulsed Splitless Injection (PSI GC) to Solid Phase Microextraction (SPME) using extracting fibers coated with films with different properties - polydimethylsiloxane - PDMS (extraction by partition) and polydimethylsiloxane / divinylbenzene - PDMS-DVB (extracti
Publicado em: 2004