نتایج جستجو برای: vertical transversely isotropy vti

تعداد نتایج: 99233  

Journal: :Vietnam Journal of Mechanics 2021

In this paper, the nonlocal elasticity theory is applied to study propagation of plane wave and Rayleigh-type surface in an incompressible, rotating transversely isotropic material. The governing equations motion for rotating, elastic medium are specialized a plane. assumed about axis perpendicular transverse isotropy taken surface. first derive velocity equation homogeneous wave. along with tr...

Journal: :Journal of Geophysics and Engineering 2023

ABSTRACT Anisotropic pseudo-acoustic forward modeling and migration imaging are critical for high-precision seismic exploration. However, the wavefields simulated by traditional coupled anisotropic acoustic wave equation have problems of shear noise numerical simulation instability epsilon that is less than delta. Furthermore, although pure expressed differential operators can solve aforementio...

Journal: :Journal of applied physiology 1997
S Takeda E Y Wu R H Epstein A S Estrera C C Hsia

We examined the progression and topographical distribution of postpneumonectomy volume changes in immature foxhounds undergoing right pneumonectomy (R-Pnx, n = 5) or sham pneumonectomy (Sham, n = 6) at 2 mo of age and subsequently raised to maturity. Volumes of lung air (Vair) and tissue (Vti) were estimated by computerized tomography (CT) scan at 7, 22, and 52 wk after surgery at a transpulmon...

2017
Gianfilippo Dottore

Through tensile tests of uniaxial and planar type, was proceeded to the mechanical characterization of SBR rubber sheets filled with particles of carbon black. The analysis has allowed defining the elastic features, the storage modulus, the transversal contraction coefficient (both obtained from uniaxial testing) and the shear modulus (from the planar/pure shear tests). Due to the calendering p...

2016
Khuong Nguyen Khuong Xuan Nguyen Nigel B. Kaye

The dynamics of the subgrid-scale (SGS) stress and scalar flux in the convective atmospheric surface layer are studied using field measurements from the Advection Horizontal Array Turbulence Study (AHATS). We extend the array technique previously used to evaluate the SGS velocity and temperature to include measurements of the fluctuating pressure, enabling separation of the resolvableand subgri...

2001
PO-LING KUO PAI-CHI LI MENG-LIN LI

Elastic properties of tendon were assessed by two different approaches. Six fresh bovine Achilles tendon specimens were used. The first approach directly measured Young’s modulus along the transverse direction (Eperpendicular) and the longitudinal direction (Eparallel), using a cyclic compression–relaxation method. Young’s moduli were derived based on the measured strain and stress values. The ...

1999
Michael A. Schoenberg Maarten V. de Hoop

To decouple qP and qSV sheets of the slowness surface of a transversely isotropic (TI) medium, a sequence of rational approximations to the solution of the dispersion relation of a TI medium is introduced. Originally conceived to allow isotropic P-wave processing schemes to be generalized to encompass the case of qP-waves in transverse isotropy, the sequence of approximations was found to be ap...

1997
J. GALLOWAY R. E. MCINTOSH G. VALI

This paper presents airborne W-band polarimetric radar measurements at horizontal and vertical incidence on ice clouds using a 95-GHz radar on the University of Wyoming King Air research aircraft. Coincident, in situ measurements from probes on the King Air make it possible to interpret polarimetric results in terms of hydrometeor composition, phase, and orientation. One of the key polarimetric...

Journal: :Cardiology journal 2015
Li-Jin Pu Yu Wang Ling Zhao Zhi-Ling Luo Bao-Tong Hua Ming-Hua Han Shu-Min Li Jun Yang Lin Li Yun-Zhu Peng Tao Guo

BACKGROUND The aim of this study was to investigate the effect of cardiac resynchronization therapy (CRT) with right ventricular (RV) sense triggered left ventricular (LV) pacing for chronic heart failure (CHF). METHODS Thirty patients who were eligible for the Class I indication of CRT were enrolled and the informed consents were signed. Left ventricular ejection fraction (LVEF), diastolic m...

2017
John W. Petersen Jing Liu Yueh‐Yun Chi Melissa Lingis R. Stan Williams Alice Rhoton‐Vlasak Mark S. Segal Kirk P. Conrad

Various non-invasive methods are available to measure cardiac output (CO) during pregnancy. We compared serial measures of CO using various methods to determine which provided the least variability. Ten patients with spontaneous pregnancy had estimation of CO at baseline prior to becoming pregnant and at the end of the first and third trimesters. Echocardiographic data were used to estimate CO ...

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