Shock Waves
Mostrando 1-12 de 56 artigos, teses e dissertações.
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1. Penser l’art au present : Baudelaire et Le Peintre de la Vie Moderne
Resumo O presente artigo propõe retomar o que constitui sem dúvida um dos mais importantes aportes de Baudelaire ao pensamento sobre a arte moderna: a promoção de uma teoria do presente, que não pode ser pensada sem uma reconfiguração do tempo - notadamente na referência ao passado e à tradição - nem sem uma reflexão sobre a memória. O exemplo d
Alea. Publicado em: 29/07/2019
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2. Methods of Hearing Preservation during Cochlear Implantation
Abstract Introduction Recent advances in surgical techniques and electrode design have made residual hearing preservation during cochlear implantation (CI) possible, achievable, and desirable. Objectives The objective of this study was to review the literature regarding methods used for hearing preservation during CI surgery. Data Synthesis We performe
Int. Arch. Otorhinolaryngol.. Publicado em: 2017-09
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3. 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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4. A New Dynamic Powder Consolidation Technique Using Shock Waves
Techniques for shock consolidation of powders have been developed for different purposes, including the synthesis of diamond from carbon powder. In this work, a new device configuration for dynamic consolidation is proposed. It consists of three coaxial tubes, with a conical cover made of explosive at the top of the device. The inner tube contains the powder
Mat. Res.. Publicado em: 13/07/2017
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5. Experimental Investigation of Ionization Sensors under Shock Tube Stagnation Conditions
ABSTRACT: Recently, there has been a growing interest in studies concerning ionization sensors for aerospace applications, power generation, and fundamental research. In aerospace research, they have been used for studies of shock and detonation waves. Two key features of these sensors are their short response time, of the order of microseconds, and the fact
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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6. Achieving effective confinement through utilization of non-Newtonian fluid mixture as stemming structure
Abstract The economics of a mining operation is directly influenced by blasting outcomes, where blasting aims to comminute the rock mass in order to attain smaller grain sizes to be loaded and hauled at a minimum cost for its first processing stage. In order to promote adequate rock breakage, the stemming structure needs to provide proper confinement for the
REM, Int. Eng. J.. Publicado em: 2017-03
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7. A New Algorithm for Shock Sensor Calculation at Supersonic Speeds on a 3D-Unstructured Grid
ABSTRACT In this paper, 3-Dsupersonic flow around two types of wings is solved using a new algorithm for shock sensor calculation. A dual-time-stepping implicit method with 2nd-order accuracy is used for time integration of the equations. In each real time step, the non-linear system of equations is solved by iterating in pseudo-time, using a multi-step inte
J. Aerosp. Technol. Manag.. Publicado em: 2016-12
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8. Dynamic Properties of Coupled Tube-Array Structures with the Axial Loads
Abstract The tube-array structures coupled both with the fluid and the axial load is focused. In a heat exchanger, the tubes are frequently affected by cold and hot fluid shock waves. Thus, tubes are often found to be vibrated and even to be worn out. This vibration may not only alter the performance of the tubes but also introduce the damage in the heat exc
Lat. Am. j. solids struct.. Publicado em: 2016-12
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9. EXTRACORPOREAL SHOCKWAVE TERAPY TO TREAT CHRONIC MUSCLE INJURY
Objective:To evaluate the low energy extracorporeal shock waves therapy (ESWT) associated with physical therapy in the treatment of chronic muscle injuries classified as grades 2 and 3 in the lower limbs of amateur athletes.Methods:Eight athletes presenting with lower limb muscle injury for more than three weeks were treated with physiotherapy and ESWT. We e
Acta ortop. bras.. Publicado em: 2015-10
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10. Is quantitative diffusion-weighted MRI a valuable technique for the detection of changes in kidneys after extracorporeal shock wave lithotripsy?
Objective The aim of this study was to evaluate the capability and the reliability of diffusion-weighted imaging (DWI) in the changes of kidneys occurring after extracorporeal shock wave lithotripsy (ESWL) treatment for renal stones. Materials and Methods A total of 32 patients who underwent ESWL treatment for renal stone disease between June and December 2
Int. braz j urol.. Publicado em: 2015-02
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11. A study on the extension of an upwind parallel solver for turbulent flow applications
The present work is primarily concerned with studying the influence of an upwind spatial discretization on the capability of representing turbulent flows on aerospace applications, in the context of a flow simulation code that is fairly close to a production code. Therefore, the work addresses the issues of implementing and validating an advanced turbulence
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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12. Elasticidade não linear com simetria radial para materiais pré-esticados / Nonlinear elastodynamics with radial symmetry for pre-stressed materials
Nesta tese expomos uma investigação qualitativa e quantitativa sobre a propagação de ondas com simetria radial em materiais elásticos pré-esticados, isotrópicos e homogêneos. Esse tipo de modelo se aproxima a uma explosão em um sólido como, por exemplo, uma fonte em sísmica. Além disso, o comportamento qualitativo da dinâmica radial ajuda o melh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011