An SPH multi-fluid model based on quasi-buoyancy for interface stabilization up to high density ratios and realistic wave speed ratios
Sign Up to like & getrecommendations! Published in 2018 at "International Journal for Numerical Methods in Fluids"
DOI: 10.1002/fld.4498
Abstract: We introduce a Smoothed Particle Hydrodynamics (SPH) concept for the stabilization of the interface between two fluids. It is demonstrated that the change in the pressure gradient across the interface leads to a force imbalance.… read more here.
Keywords: wave speed; interface; speed ratios; multi fluid ... See more keywords
Effect of a Thin Fluid Layer on Surface Wave Speed Measurements: A Lung Phantom Study
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Ultrasound in Medicine"
DOI: 10.1002/jum.14802
Abstract: Lung ultrasound (US) surface wave elastography (SWE) is a novel technique that measures superficial lung tissue elastic properties. A thin pleural fluid layer covers a lung, but its effect on lung measurements in SWE is… read more here.
Keywords: wave speed; surface wave; surface; fluid layer ... See more keywords
Wave speed structure of the eastern North American margin
Sign Up to like & getrecommendations! Published in 2017 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2016.11.028
Abstract: Abstract The eastern North American margin (ENAM) is the result of nearly a billion years of continental collision and rifting. To the west of this margin lies thick continental lithosphere of the North American craton,… read more here.
Keywords: wave speed; american margin; eastern north; north american ... See more keywords
Minimal wave speed for a class of non-cooperative reaction-diffusion systems of three equations
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Differential Equations"
DOI: 10.1016/j.jde.2016.12.017
Abstract: Abstract In this paper, we study the traveling wave solutions and minimal wave speed for a class of non-cooperative reaction–diffusion systems consisting of three equations. Based on the eigenvalues, a pair of upper–lower solutions connecting… read more here.
Keywords: wave speed; non cooperative; class non; minimal wave ... See more keywords
Minimal wave speed of a competition integrodifference system
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Difference Equations and Applications"
DOI: 10.1080/10236198.2018.1442446
Abstract: Abstract In this paper, we study the minimal wave speed of a competitive system. By constructing upper and lower solutions, we confirm the existence of travelling wave solution at the critical wave speed. This completes… read more here.
Keywords: wave speed; minimal wave; integrodifference system; speed competition ... See more keywords
Robust and practical non-invasive estimation of local arterial wave speed and mean blood velocity waveforms.
Sign Up to like & getrecommendations! Published in 2017 at "Physiological measurement"
DOI: 10.1088/1361-6579/aa8de3
Abstract: OBJECTIVE Local arterial wave speed, a surrogate of vessel stiffness, can be estimated via the pressure-velocity (PU) and diameter-velocity (ln(D)U) loop methods. These assume negligible early-systolic reflected waves (RWes) and require measurement of cross-sectionally averaged… read more here.
Keywords: wave speed; velocity; local arterial; speed mean ... See more keywords
Left atrium substrate and wave speed mapping using Omnipolar technology in patients undergoing paroxysmal atrial fibrillation catheter ablation
Sign Up to like & getrecommendations! Published in 2023 at "Europace"
DOI: 10.1093/europace/euad122.186
Abstract: Abstract Funding Acknowledgements Type of funding sources: None. Background The new Ensite X Cardiac Mapping (Abbott) system, with the introduction of Omnipolar technology (OT), provides three-dimensional information on voltage, direction of activation and conduction velocity… read more here.
Keywords: wave speed; patients undergoing; left atrium; voltage ... See more keywords
Use of eddy viscosity in resolvent analysis of turbulent channel flow
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review Fluids"
DOI: 10.1103/physrevfluids.8.064601
Abstract: The predictions of resolvent analysis for turbulent channel flow are evaluated for a friction Reynolds number of Retau = 550. In addition to the standard resolvent operator with kinematic viscosity, a resolvent operator augmented with… read more here.
Keywords: eddy viscosity; wave speed; wall; viscosity ... See more keywords
Fourier-Domain Shift Matching: A Robust Time-of-Flight Approach for Shear Wave Speed Estimation
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2018.2811738
Abstract: Our primary objective of this work was to design and test a new time-of-flight (TOF) method that allows measurements of shear wave speed (SWS) following impulsive excitation in soft tissues. Particularly, under the assumption of… read more here.
Keywords: wave speed; shear wave; time flight; method ... See more keywords
Magma accumulation at depths of prior rhyolite storage beneath Yellowstone Caldera
Sign Up to like & getrecommendations! Published in 2022 at "Science"
DOI: 10.1126/science.ade0347
Abstract: Seismic tomography has provided key insight into Yellowstone’s crustal magmatic system that includes attempts to understand the melt distribution in the subsurface and the current stage of the volcano’s life cycle. We present new tomographic… read more here.
Keywords: yellowstone; wave speed; magmatic system; shear wave ... See more keywords
Measuring shear-wave speed with point shear-wave elastography and MR elastography: a phantom study
Sign Up to like & getrecommendations! Published in 2017 at "BMJ Open"
DOI: 10.1136/bmjopen-2016-013925
Abstract: Objectives To compare shear-wave speed (SWS) measured by ultrasound-based point shear-wave elastography (pSWE) and MR elastography (MRE) on phantoms with a known shear modulus, and to assess method validity and variability. Methods 5 homogeneous phantoms… read more here.
Keywords: wave speed; phantom; shear wave; point shear ... See more keywords