Fluid Lines
Mostrando 1-12 de 142 artigos, teses e dissertações.
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1. NUMERICAL STUDY OF VISCOPLASTIC FLOW IN A T-BIFURCATION: IDENTIFICATION OF STAGNANT REGIONS
Abstract Identification of stagnant regions of viscoplastic fluid flows in production lines and equipment is of paramount importance owing to potential material degradation and process contamination. The present work introduces an assessment strategy to identify, classify and quantify unyielded regions with the objective of optimizing the flow conditions wit
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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2. Sobre o surgimento das equações de Maxwell
Resumo Em seu Sobre linhas de força físicas Maxwell apresentou a primeira versão de suas equações eletromagnéticas, quando a luz foi então encarada como distúrbio cisalhante em um éter fluido e elástico. No presente artigo procuro discutir os detalhes deste modelo mecânico que serviu de trampolim para Maxwell propor a teoria eletromagnética da lu
Rev. Bras. Ensino Fís.. Publicado em: 01/07/2019
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3. New flavone and other compounds from Tephrosia egregia: assessing the cytotoxic effect on human tumor cell lines
ABSTRACT The organic extracts from stems, roots and leaves of Tephrosia egregia Sandwith, Fabaceae, provided a new flavone, 5-hydroxy-8-(1",2"-epoxy-3"-hydroxy-3"-methylbutyl)-7-methoxyflavone (1), in addition to eleven known compounds: pongaflavone (2), praecansone B (3), 12a-hydroxyrotenone (4), praecansone A, 2',6'-dimethoxy-4',5'-(2",2"-dimethyl)-pyranoc
Rev. bras. farmacogn.. Publicado em: 2018-06
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4. Natural products from endophytic fungi found in association with Asteraceae species and antibiotic assay in the "Caenorhabditis elegans" infection model / Produtos naturais de fungos endofíticos associados a espécies de Asteraceae e ensaio antibiótico no modelo de infecção em "Caenorhabditis elegans"
The search for small bioactive molecules from under-explored natural sources that possess specific ecological interaction in their respective habitat has been emphasized as strategic for the discovery of bioactive compounds. Endophytic microorganisms are still relatively under-explored sources of natural products. These microorganisms live inside the host pl
Publicado em: 2010
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5. Pulse oximetry wave variation as a noninvasive tool to assess volume status in cardiac surgery
OBJECTIVE: To compare variations of plethysmographic wave amplitude (ΔPpleth) and to determine the percent difference between inspiratory and expiratory pulse pressure (ΔPp) cutoff values for volume responsiveness in a homogenous population of postoperative cardiac surgery patients. INTRODUCTION: Intra-thoracic pressure variations interfere with stroke vol
Clinics. Publicado em: 2009-04
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6. Modelo hidro-elástico para simular as vibrações induzidas por vórtices em cabos submersos. / Hidro-elastic model to stimulate vortex-induced vibrations in submerged cables.
The present work proposes a qualitative numerical study of a hydro-elastic model in order to simulate vortex-induced vibrations in submerged cables. The model is composed of a coupled system of equations describing the structure and the fluid. The structure is modeled through a classical elastic oscillator and discretized using a lumped mass approach. The fl
Publicado em: 2009
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7. Prostasin, a potential tumor marker in ovarian cancer: a pilot study
INTRODUCTION: Ovarian cancer is generally diagnosed at advanced stages of the disease; therefore, poor prognoses are typical. The development of tumor markers is thus of utmost importance. Prostasin is a protease that in normal tissues is highly expressed only in the prostate gland and seminal fluid. A previous study showed that prostasin is highly overexpre
Clinics. Publicado em: 2009
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8. Modificação do LLDPE através de silanos viabilizando a aplicação em camadas plásticas de linhas flexíveis / Study of silane grafting reactions of low density polyethylene for pipe applications
The flexible lines are flexible structures manufactured through plastic and steel layers that allows its use in order to permit fluid flow in exploration and production of hydrocarbon between offshore oil units and sea bed and/or coast. Nowadays these pipes are one of the main ways to permit the exploration of hydrocarbon in deepwater. The present study aims
Publicado em: 2009
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9. Characterization of cytotoxic heat-stable enterotoxin (ST-L) produced by Escherichia coli isolated from drinking water / Caracterização da enterotoxina citotoxica termoestavel (ST-L) produzida por Escherichia coli isoladas de agua de consumo
Studies on the virulence properties of Escherichia coli associated with intestinal infections are important for the understanding of diarrheic diseases mechanisms. In a previous work we have described a factor presenting enterotoxic and cytotoxic activities in the culture supernatants of E. coli isolated from drinking water in the city of Ouro Preto, MG. Thi
Publicado em: 2009
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10. Avaliação da perda de carga e do fator de atrito no escoamento de fluidos de perfuração em geometrias circular e anulares concêntricos / Load loss and friction factor in the disposal of drilling fluids in circular geometry and concentric rings
The constant search for new technologies of drilling oil wells has reinforced the research and development of drilling fluids and the specific study of their disposal, particularly with regard to the load loss caused by the different geometries. Within this context, this study focused on the load loss and friction factor in the disposal of the drilling fluid
Publicado em: 2008
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11. Compósitos cerâmicos porosos de alumina - zircônia para aplicação em sistemas de controle térmico para satélites: obtenção e caracterização / Alumina-zirconia porous ceramic composites for application in satellite thermal control systems: obtaining and characterization
To control the temperature of satellites are used various thermal control heat systems. The Loop Heat pipe (LHP) are being developed at the DEM (Space Mechanic and Control Division) of the INPE (National Institute for Space Research) an apparatus for passive heat control of the satellites components. The main components of the LHP system are: capillary evapo
Publicado em: 2008
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12. Miopatia dorsal cranial em frangos de corte: caracterização anatomopatológica, colheita e análise de dados
¿Miopatia dorsal cranial¿ (MDC) or dorsal cranial myopathy affects broiler chickens as early as their 33rd day of life, occurring almost exclusively on slaughter lines and in different slaughterhouses in the three southern states of Brazil where it has been causing economical losses, due to the resulting condemnation or downgrading of carcasses. It is caus
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2008