Results 1 to 10 of about 23,863,144 (226)

Measurement, Analysis and Interpretation of Pressure/Flow Waves in Blood Vessels

Frontiers in Physiology, 2020
The optimal performance of the cardiovascular system, as well as the break-down of this performance with disease, both involve complex biomechanical interactions between the heart, conduit vascular networks and microvascular beds.
Jonathan P. Mynard, Jonathan P. Mynard, Jonathan P. Mynard, Jonathan P. Mynard, Avinash Kondiboyina, Avinash Kondiboyina, Remi Kowalski, Remi Kowalski, Remi Kowalski, Michael M. H. Cheung, Michael M. H. Cheung, Michael M. H. Cheung, Joseph J. Smolich, Joseph J. Smolich   +13 more
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Prognostic Value of Carotid and Radial Artery Reservoir‐Wave Parameters in End‐Stage Renal Disease

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2019
Background Reservoir‐wave approach is an alternative model of arterial hemodynamics based on the assumption that measured arterial pressure is composed of volume‐related (reservoir pressure) and wave‐related components (excess pressure).
Catherine Fortier, Gabrielle Côté, Fabrice Mac‐Way, Rémi Goupil, Louis‐Charles Desbiens, Marie‐Pier Desjardins, Karine Marquis, Bernhard Hametner, Siegfried Wassertheurer, Martin G. Schultz, James E. Sharman, Mohsen Agharazii   +11 more
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Optimization design of dual microjets for the shock wave/boundary layer interaction control in the supersonic flow

AIP Advances, 2023
The shock wave/boundary layer interaction phenomenon is harmful to the performance improvement of the hypersonic vehicle, and the microjet flow control scheme was introduced to minimize the total volume of the separation bubble and maximize the total ...
Hao Xu, Wei Huang, Yu-shan Meng, Shan-shan Tian, Li Yan   +4 more
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2.2 RE-REFLECTION OF BACKWARD PROPAGATING WAVES LEADS TO AMPLIFICATION OF THE FORWARD PRESSURE WAVE IN WAVE SEPARATION ANALYSIS

Artery Research, 2015
Introduction: In wave separation analysis, the pressure wave is decomposed into a single forward and backward component, which actually compounds all forward and backward propagating waves.
Patrick Segers*, Liesbeth Taelman, Joris Degroote, Jan Vierendeels   +3 more
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Gravity wave amplification and phase crest re-organization over a shoal [PDF]

Natural Hazards and Earth System Sciences, 2011
In this experimental work, both wave amplification and phase evolution, due to a submerged mound, are studied. In addition to the classical surface wave measurements, the experimental study takes advantage of photographs that underline crest re ...
N. Jarry, V. Rey, F. Gouaud, D. Lajoie
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Flow Separation Control in a Curved Diffuser with Rigid Traveling Wave Wall and Its Mechanism

Energies, 2019
Traveling wave wall is a useful method to suppress flow separation. However, the interaction between the traveling wave wall and unsteady separation flow is complex, which causes difficulty in discovering the corresponding mechanism.
Weiyu Lu, Guoping Huang, Jinchun Wang, Yuxuan Yang   +3 more
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Phase Separation and Pairing Fluctuations in Oxide Materials

Condensed Matter, 2020
The microscopic mechanism of charge instabilities and the formation of inhomogeneous states in systems with strong electron correlations is investigated.
Andreas Bill, Vladimir Hizhnyakov, Reinhard K. Kremer, Götz Seibold, Aleksander Shelkan, Alexei Sherman   +5 more
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P8.2 ARTERIAL WAVE REFLECTIONS: LOOKING BEYOND THE FIRST HARMONIC AND PRESSURE INFLECTION POINTS TO ASSESS LATE-SYSTOLIC VENTRICULAR LOADING

Artery Research, 2015
Background: Late-systolic ventricular loading is associated with impaired relaxation and adverse remodeling. Standard indices of relative wave reflections such as augmentation index (AIx) and reflection magnitude (RM) from wave separation analysis blend ...
Timothy Phan*, John Li, Zoubair Ahmed, Ejaz Shah, Vandan Panchal, Julio Chirinos   +5 more
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Mode Separation for Multimodal Ultrasonic Lamb Waves Using Dispersion Compensation and Independent Component Analysis of Forth-Order Cumulant

Applied Sciences, 2019
Ultrasonic Lamb wave testing has been successfully applied in nondestructive testing. However, because of Lamb wave multimodal and dispersion characteristics, the received signals are often multimodal and overlapping, which makes them very complicated ...
Xiao Chen, Dandan Ma
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Determination of wave vectors using the phase differencing method [PDF]

Annales Geophysicae, 2013
Due to the collisionless nature of space plasmas, plasma waves play an important role in the redistribution of energy between the various particle populations in many regions of geospace. In order to fully comprehend such mechanisms it is necessary to
S. N. Walker, I. Moiseenko
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