Results 11 to 20 of about 1,372,433 (300)

Local Phase Velocity Based Imaging of Viscoelastic Phantoms and Tissues. [PDF]

open access: yesIEEE Trans Ultrason Ferroelectr Freq Control, 2021
Kijanka P, Urban MW.
europepmc   +2 more sources

Propagation Behavior of Love-Type Waves in a Poro-elastic Medium using Staggered Grid Finite Difference Scheme [PDF]

open access: yesMechanics of Advanced Composite Structures, 2021
The analysis of the propagation behaviour of seismic waves in porous medium requires a mathematical backup. That is pictured here. The present study investigates the propagation behavior of Love-type waves in a poro-elastic medium.
Jayantika Pal, Anjana Ghorai
doaj   +1 more source

Location of singular points in orthorhombic media

open access: yesГеофизический журнал, 2022
The dependence of the location of singular points of orthorhombic (ORT) media on the stiffness coefficients , and phase velocity  at the singularity point is studied under the assumption that  are larger than  and .
Yu.V. Roganov   +2 more
doaj   +1 more source

Velocity-dependent quantum phase slips in 1D atomic superfluids [PDF]

open access: yes, 2016
Quantum phase slips are the primary excitations in one-dimensional superfluids and superconductors at low temperatures but their existence in ultracold quantum gases has not been demonstrated yet.
Abbate, Simona Scaffidi   +7 more
core   +2 more sources

Vibrations in a Fluid-Loaded Poroelastic Hollow Cylinder Surrounded by a Fluid in Plane-Strain Form

open access: yesInternational Journal of Applied Mechanics and Engineering, 2013
Plane-strain vibrations in a fluid-loaded poroelastic hollow cylinder surrounded by a fluid are investigated employing Biot’s theory of wave propagation in poroelastic media.
B. Shanker   +3 more
doaj   +1 more source

Properties of singular points in a special case of orthorhombic media

open access: yesГеофизический журнал, 2023
The position of singular lines for orthorhombic (ORT) media with fixed diagonal elements of the elasticity matrix cij, i=1…6 is studied under the condition that c11, c22, c33>c66>c44>c55.
Yu.V. Roganov, A. Stovas, V.Yu. Roganov
doaj   +1 more source

Nonsubtractive spiral phase contrast velocity imaging [PDF]

open access: yesMagnetic Resonance in Medicine, 1999
Phase contrast velocity imaging is a standard method for accurate in vivo flow measurement. One drawback, however, is that it lengthens the scan time (or reduces the achievable temporal resolution) because one has to acquire two or more images with different flow sensitivities and subtract their phases to produce the final velocity image.
L C, Man   +3 more
openaire   +2 more sources

Measurement and control systems for an imaging electromagnetic flow meter [PDF]

open access: yes, 2014
Electromagnetic flow metres based on the principles of Faraday's laws of induction have been used successfully in many industries. The conventional electromagnetic flow metre can measure the mean liquid velocity in axisymmetric single phase flows ...
G. Lucas   +14 more
core   +1 more source

Experimental verification of stress-wave bands and negative phase velocity in layered media [PDF]

open access: yesTheoretical and Applied Mechanics, 2011
Based on a robust numerical method for calculation of band structure for stress-waves in heterogeneous media, a layered composite was designed and fabricated.
Amirkhizi Alireza V., Nemat-Nasser Sia
doaj   +1 more source

Dynamic structure selection and instabilities of driven Josephson lattice in high-temperature superconductors [PDF]

open access: yes, 2001
We investigate the dynamics of the Josephson vortex lattice in layered high-T$_{c}$ superconductors at high magnetic fields. Starting from coupled equations for superconducting phases and magnetic field we derive equations for the relative displacements [
Federal Aviation Administration (FAA)   +7 more
core   +2 more sources

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