نتایج جستجو برای: velocity of longitudinal wave

تعداد نتایج: 21216035  

حمدی‌پور, محمد, شوکرینف, یوری, کلاه‌چی, محمدرضا ,

Charge creation in superconductor layers affects current–voltage characteristics (CVC) of the Josephson junction array and creates a breakpoint region in CVC. This charge may oscillate in the form of longitudinal plasma wave, (LPW), or nonregularity. In this paper we intend to distinguish the region with LPW from the nonregular region.

Love-type wave generation in a fiber-reinforced medium placed over an inhomogeneous orthotropic half-space is analysed. The upper and lower boundary surfaces of the fiber reinforced medium are periodically corrugated. Inhomogeneity of half-space is caused by variable density and variable shear modules. Displacement components for layer and half-space are derived by applying separable variable t...

2003
Takahiro Kudoh Shantanu Basu

We perform numerical simulations of nonlinear MHD waves in a gravitationally stratified molecular cloud that is bounded by a hot and tenuous external medium. We study the relation between the strength of the turbulence and various global properties of a molecular cloud, within a 1.5-dimensional approximation. Under the influence of a driving source of Alfvénic disturbances, the cloud is lifted ...

Journal: :archives of cardiovascular imaging 0
leila bigdelu department of cardiology, ghaem hospital, school of medicine, mashhad university of medical sciences, ir iran ali azari department of cardiac surgery, ghaem hospital, school of medicine, mashhad university of medical sciences, mashhad, ir iran afsoon fazlinezhad department of cardiology, ghaem hospital, school of medicine, mashhad university of medical sciences, ir iran; department of cardiology, ghaem hospital, school of medicine, mashhad university of medical sciences, ir iran

background pulmonary artery hypertension is the presentation of various types of cardiovascular and systematic diseases. there are different kinds of noninvasive methods to determine right ventricular function, pulmonary artery pressure, and effect of pulmonary hypertension on right ventricular function. these methods include the tissue doppler imaging (tdi) of the tricuspid annulus and the lon...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2013
J S Hansen

This paper studies the relaxation of the molecular spin angular velocity in the framework of generalized extended Navier-Stokes theory. Using molecular dynamics simulations, it is shown that for uncharged diatomic molecules the relaxation time decreases with increasing molecular moment of inertia per unit mass. In the regime of large moment of inertia the fast relaxation is wave-vector independ...

R.R Gupta, R.R. Gupta

The present paper concerns with the effect of initial stress on the propagation of plane waves in a rotating transversely isotropic medium in the context of thermoelasticity theory of GN theory of type-II and III. After solving the governing equations, three waves propagating in the medium are obtained. The fastest among them is a quasi-longitudinal wave. The slowest of them is a thermal wave. ...

ژورنال: مهندسی دریا 2016

Caspian Sea is one of the most low-lying areas of the region which is located between latitudes 36.34 and 47.13 degrees north. Its considerable vast area and depth have provided an opportunity to gain renewable energy by different methods. This paper analyzes the performance and mechanism of a floating wave energy converter known as WaveStar, in the above-mentioned sea. Different parts of mecha...

Journal: :civil engineering infrastructures journal 0
rasoul ghobadian hydraulic structures ali fattahi water resource engineering milad farmanifard young researchers club, kermanshah branch, islamic azad university arash ahmadi water civil engineering

different construction materials with different roughness used to make circular weirs highly affect surface roughness and, in turn, flow hydraulics passing over these structures.  in the present research, numerous experiments under different hydraulic conditions were performed on a physical model to study the effects of roughness on flow hydraulics over a circular weir. the flow hydraulics incl...

Journal: :Journal of physics 2021

The propagation of plane longitudinal waves in a fluid-saturated porous medium with cavities is considered linear elastic approximation. It has been shown that as distinct from the classical (Biot's medium) where two dispersionless can propagate (a fast wave and slow wave), porous-cavity media three dispersive one them solely induced due to material. study carried out by obtaining analyzing dis...

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