Results 11 to 20 of about 64,050 (264)
Artery Research, 2009 In vivo measurements of wall shear stress (WSS), a determinant of endothelial cell function and gene expression, have shown that theoretical assumptions regarding WSS in the arterial system and its calculation are invalid. In humans mean WSS varies along
Robert S. Reneman +2 more
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The Effect of Wall Shear Stress and Viscous Heating on Nanoscale Flow [PDF]
Port Said Engineering Research Journal, 2018 The effect of wall shear stress and viscous heating on nano scale flow properties and boundary conditions is presented. Molecular dynamics (MD) simulations is implemented to handle nano scale force-driven Poiseuille flow bounded by two parallel planner ...
Mohamed Elsabahy +2 more
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Machine Learning-Based Segmentation of the Thoracic Aorta with Congenital Valve Disease Using MRI
Bioengineering, 2023 Subjects with bicuspid aortic valves (BAV) are at risk of developing valve dysfunction and need regular clinical imaging surveillance. Management of BAV involves manual and time-consuming segmentation of the aorta for assessing left ventricular function,
Elias Sundström, Marco Laudato
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Shear stress fluctuation measurements using an electrochemical method in pipe flow
Journal of Fluid Science and Technology, 2019 Wall shear stress fluctuations are measured using an electrochemical method in pipe flow. The relationship between the mass transfer and the momentum transfer, studied by Hanratty and Campbell (1983) and the Chilton–Colburn analogy (Chilton and Colburn ...
Tong TONG +2 more
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Development of a Flexible MEMS Sensor for Subsonic Flow
Micromachines, 2022 Detection and control of flow separation is a key to improving the efficiency of fluid machinery. In this study, we developed a flexible MEMS (microelectromechanical systems) sensor for measuring the wall shear stress and flow angle in subsonic airflow ...
Koichi Murakami +7 more
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Hemodynamics of Cerebral Aneurysm Initiation: The Role of Wall Shear Stress and Spatial Wall Shear Stress Gradient [PDF]
American Journal of Neuroradiology, 2011 Cerebral aneurysms are preferentially located at arterial curvatures and bifurcations that are exposed to major hemodynamic forces, increasingly implicated in the life cycle of aneurysms. By observing the natural history of aneurysm formation from its preaneurysm state, we aimed to examine the hemodynamic microenvironment related to aneurysm initiation
Kulcsár Z +5 more
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Vascular Wall Shear Stress in Clinical Practice
Current Vascular Pharmacology, 2007 Wall shear stress is a fluid dynamic quantity that is gradually emerging as a potentially important factor of coronary atherosclerosis. Methods, therefore, of estimation of shear stress in the arterial system are of clinical relevance. The purpose of this review is to define wall shear stress, review the various methods that have been used for its ...
Pantos, J. +2 more
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Artery Research, 2009 Background: Venous grafts commonly develop myointimal hyperplasia, which can lead to stenoses and, ultimately, with expression of adhesion molecules, lumenal occlusion.
Mark Jackson +8 more
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Aortic wall shear stress in Marfan syndrome [PDF]
Magnetic Resonance in Medicine, 2012 The aim of this study was to quantify changes in thoracic aortic wall shear stress (WSS) in asymptomatic patients with Marfan syndrome (MFS) compared with healthy controls. WSS in the thoracic aorta was quantified based on time‐resolved 3D phase contrast MRI with three‐directional velocity encoding (4D flow MRI, temporal resolution ∼44 ms, spatial ...
Julia, Geiger +7 more
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