Compressible
Mostrando 1-12 de 102 artigos, teses e dissertações.
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1. Uterine artery embolization with highly compressible calibrated microspheres for the treatment of uterine fibroids
Resumo Objetivo: Avaliar a eficácia e segurança da embolização da artéria uterina (EAU) com microesferas calibradas de alta compressibilidade no tratamento de miomas uterinos. Materiais e Métodos: Este foi um estudo prospectivo e multicêntrico. Foram selecionadas 32 mulheres com miomas uterinos sintomáticos para EAU de janeiro de 2019 a março de 2
Radiologia Brasileira. Publicado em: 2022
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2. Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air
Abstract Partial discharges can occur in different types of electric equipment and cause progressive insulation deterioration, so there is interest in monitoring partial discharges for assessing the state of the isolation of an electric system and to predict failures. Techniques to detect partial discharges, such as detecting ultrasonic emission, have been p
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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3. Numerical analysis of soft soil improved with stone column technique
Abstract The present research aims to do a numerical study on the behavior of a test embankment reinforced with stone column spacing of 1.85 m in a square grid with an average diameter of 1.0 m and 11.35 m length. The case study investigated the work in a steel company (ThyssenKrupp), located in Santa Cruz, western region of Rio de Janeiro - Brazil, where a
REM, Int. Eng. J.. Publicado em: 2021-09
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4. Numerical and experimental evaluation of the thermally stratified atmospheric boundary layer in wind tunnels
Abstract The atmospheric boundary layer (ABL) flow occurs due to the interaction between the Earth’s surface and atmosphere, and it usually happens under thermal stratification. Therefore, in order to emulate this phenomenon, atmospheric wind tunnels need appropriate devices, such as spires and cubical roughness elements, at the entrance of the wind tunnel
REM, Int. Eng. J.. Publicado em: 2021-01
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5. Indicações e resultados para o uso expandido da oclusão ressuscitativa por balão endovascular da aorta - REBOA.
RESUMO A oclusão ressuscitativa por balão endovascular da aorta (REBOA) é utilizada para controlar hemorragias não compressíveis do tronco como uma opção menos invasiva e com menos distúrbios fisiológicos quando comparado à toracotomia de emergência com clampeamento da aorta. Isso permite a melhora dos parâmetros hemodinâmicos até que a cirurgi
Rev. Col. Bras. Cir.. Publicado em: 20/12/2019
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6. Avaliação térmica, física e mecânica de blocos de concreto com poliestireno expandido reciclado
Resumo A presente pesquisa produziu blocos de concretos com substituição parcial do agregado graúdo comumente utilizado por poliestireno expandido reciclado. Para tanto, uma dosagem experimentalé proposta a partir da associação do modelo de empacotamento compressível com a metodologia adaptada de Tango, publicada em 1994, produzindo-se quatro tipos de
Ambient. constr.. Publicado em: 03/10/2019
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7. Experimental and Numerical Study of the Unsteady Wake of a Supercritical Airfoil in a Compressible Flow
ABSTRACT Experimental investigations were carried out to study the wake profile of a supercritical airfoil at Mach numbers of 0.4 and 0.6 in a pitching motion. Both static and dynamic tests were conducted in a tri-sonic wind tunnel. Flow field inside the wake was measured by hot wire anemometry at downstream distances of 0.25 and 0.5 times the chord length f
J. Aerosp. Technol. Manag.. Publicado em: 10/12/2018
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8. Direct Numerical Simulation of a Compressible Flow and Matrix-Free Analysis of its Instabilities over an Open Cavity
ABSTRACT: This study takes a Jacobian-free approach based on the Arnoldi iteration to present a method to perform hydrodynamic instability analysis based on Direct Numerical Simulations. The method employs high order spatial and temporal discretizations for the flow simulation and has very low requirements of computational time and memory, compared to conven
J. Aerosp. Technol. Manag.. Publicado em: 19/07/2018
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9. Direct Numerical Simulation Code Validation for Compressible Shear Flows Using Linear Stability Theory
ABSTRACT: In order to simulate compressible shear flow stability and aeroacoustic problems, a numerical code must be able to capture how a baseflow behaves when submitted to small disturbances. If the disturbances are amplified, the flow is unstable. The linear stability theory (LST) provides a framework to obtain information about the growth rate in relatio
J. Aerosp. Technol. Manag.. Publicado em: 07/05/2018
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10. Further Development and Application of High-Order Spectral Volume Methods for Compressible Flows
Abstract: The present paper investigates the high-order spectral finite volume method with emphasis on applicability aspects for compressible flows. The intent is to improve the understanding and implementation of numerical techniques related to high-order unstructured grid schemes. In that regard, a hierarchical moment limiter and high-order mesh capability
J. Aerosp. Technol. Manag.. Publicado em: 20/07/2017
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11. Thermodynamic bounds for existence of normal shock in compressible fluid flow in pipes
Abstract The present paper is concerned with the thermodynamic theory of the normal shock in compressible fluid flow in pipes, in the lights of the pioneering works of Lord Rayleigh and G. Fanno. The theory of normal shock in pipes is currently presented in terms of the Rayleigh and Fanno curves, which are shown to cross each other in two points, one corresp
An. Acad. Bras. Ciênc.. Publicado em: 2017-06
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12. Modeling the Local Viscoelastic Behavior of Living Cells Under Nanoindentation Tests
Abstract Aiming at multiscale numerical investigations of fibrous connective tissues, the present work proposes a finite strain viscoelastic model suitable to represent the local mechanical response of living cells in conjunction with finite element simulations of nanoindentation tests. The material model is formulated in a thermodynamically consistent frame
Lat. Am. j. solids struct.. Publicado em: 2017-06