نتایج جستجو برای: wave velocity

تعداد نتایج: 341742  

P Sharma R Kumar,

In this paper the propagation of harmonic plane waves in a homogeneous anisotropic magneto-piezothermoelastic diffusive body with fractional order derivative is studied. The governing equations for a homogeneous transversely isotropic body in the context of the theory of thermoelasticity with diffusion given by Sherief et al. [1] are considered as a special case. It is found that three types of...

2006
Masanobu Kawakami

momanometer that provides arterial pressures (brachial systolic and diastolic pressure) is coming under question. The concerns extend well beyond the familiar issue of “white coat” hypertension, home and 24-h blood pressure recordings, and the phase-out of mercury based instruments. These concerns relate to the inaccuracy of all cuff devices for measuring pressure within the brachial artery, th...

Journal: :فیزیک زمین و فضا 0
احمد ادیب دانشیار، گروه مهندسی نفت، دانشکده فنی، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران، ایران

summary based on the results of the analysis of site effects, mostly those with shear wave velocity and the fundamental period chosen as the basis for classification. in revision of earthquake resistant design regulations for buildings, classification of lands should be subject to the field conditions, geological, geotechnical, geophysical, and laboratory tests.in this context, the average shea...

D.S Pathania K Singh, R Kumar,

This paper studies the propagation of shear waves in a composite structure consisting of a piezoelectric layer perfectly bonded over a micropolar elastic half space. The general dispersion equations for the existence of shear waves are obtained analytically in the closed form. Some particular cases have been discussed and in one special case the relation obtained is in agreement with existing r...

Journal: :Hypertension 2015

Journal: :the journal of tehran university heart center 0
seyed reza hashemi modarres hospital, cardiovascular research center, shahid beheshti university of medical sciences, t mohammadreza motamedi modarres hospital, cardiovascular research center, shahid beheshti university of medical sciences, t mohammad khani modarres hospital, cardiovascular research center, shahid beheshti university of medical sciences, t manouchehr hekmat modarres hospital, cardiovascular research center, shahid beheshti university of medical sciences, t latif gachkar modarres hospital, cardiovascular research center, shahid beheshti university of medical sciences, t atieh rezaeefar modarres hospital, cardiovascular research center, shahid beheshti university of medical sciences, t

background: although percutaneous coronary intervention (pci) is an excellent therapy for coronary artery disease, there is a paucity of information on the efficacy of pci in improving diastolic function, especially in iran. because of the high prevalence of left diastolic dysfunction in coronary artery disease patients and its probable progression to heart failure, an evaluation of the role of...

Journal: :the journal of tehran university heart center 0
manijhe mokhtari dizaji department of medical physics, tarbiat modares university, tehran, iran. mehdi maerefat department of mechanical engineering, tarbiat modares university, tehran, iran. saeed rahgozar department of mechanical engineering, kashan university, kashan, iran.

background: pulse wave velocity (pwv) is widely used for estimating the stiffness of an artery. v arious invasive and non-invasive methods have been developed to determine pwv over the years. in the present research , the non-invasive estimation of the pwv of large arteries was used as an index for arterial stiffness. methods: a dynamic model based on the navier-stokes equations coupled to elas...

Journal: :annals of military and health science research 0
محمد حسین لشکری mohammad hossein lashkari 1department of surgery, aja university of medical sciences, tehran, iran.دانشگاه علوم پزشکی آجا کامبیز کنگرلو kambiz kangarlou amir kabir university of technologyدانشگاه صنعتی امیرکبیر محمد تفضلی شادپور mohammad tafazzoli- shadpour amir kabir university of technologyدانشگاه صنعتی امیرکبیر

purpose: since explosive blasts continue to cause casualties in both civil and military environments, there is a need for an understanding of the mechanisms of blast trauma at the human organ level, plus a more detailed predictive methodology. the primary goal of this research was to develop a finite element model capable of predicting primary blast injury to the lung so as to assist in the dev...

This paper examines the generation and propagation of a Third order solitary water wave along the channel. First the Incompressible Smoothed Particle Hydrodynamics (ISPH) numerical method is described and the boundary condition handling method is presented. The numerical model is then used to simulate solitary wave propagation along the fixed depth channel. The numerical results are compared wi...

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