نتایج جستجو برای: wave

تعداد نتایج: 218105  

ژورنال: مهندسی دریا 2011
منشی زاده, مرتضی , نجفی جیلانی, عطااله ,

The visco-elastic properties of asphaltic layers make it appropriate for application in coastal protection in embankments. In this research, an experimental set up of a coastal embankment is developed to investigate the characteristics of lean stone asphalt layer on coastal embankments. More than 100 laboratory tests were carried out considering various loading conditions on the asphalt protect...

On the basis of the continuity equation and the Bernoulli equation in the steady form, a differential equation is developed to evaluate the successive water levels within compartments of an upright perforated wave absorber. Then the initial and boundary conditions are introduced and the differential equation is solved as an initial value problem. Finally the reflection coefficient from the wave...

R Kumar, R. Kumar

The present article deals with the study of propagation of plane waves in isotropic generalized thermoelastic diffusion with voids under initial stress. It is found that, for two dimensional model of isotropic generalized thermoelastic diffusion with voids under initial stress, there exists four coupled waves namely, P wave, Mass Diffusion (MD) wave, thermal (T) wave and Volume Fraction (VF) wa...

In this study, torsional wave propagation is investigated in a rod that are made of one and two dimensional functionally graded material. Firstly, the governing equations of the wave propagation in the functionally graded cylinder derived in polar coordinate. Secondly, finite difference method is used to discretize the equations. The Von Neumann stability approach is used to obtain the time ste...

Journal: :caspian journal of neurological sciences 0
sahar memar-montazerin fariborz khorvash majid ghasemi associate professor of neurology, department of neurology, isfahan neuroscience research center, alzahra hospital, isfahan university of medical sciences, isfahan, iran ; [email protected] samira mirzaei mahdis khazaeili seyed-morteza mousavi

background: f-wave study, part of electrodiagnostic study, has had a controversial sensitivity in the diagnosis of lumbosacral radiculopathy. objectives: we aimed to compare f wave parameters obtained from the tibial nerve of both extremities in patients with unilateral s1 radiculopathy. materials and methods: the study was done from march to september 2015 in the electrodiagnostic laboratory o...

Journal: :cell journal 0

introduction: clostridium difficile is the etiologic agent of several infections such as pseudomembranous colitis in human. these diseases are frequently associated with antibiotic useage but many infections with this organisms are seen without antibiotic administration. in addition it is believed that clostridium difficile is one of the most important bacteria involved in acquired hospital inf...

In this paper, Exp-function and (G′/G)expansion methods are presented to derive traveling wave solutions for a class of nonlinear space-time fractional differential equations. As a results, some new exact traveling wave solutions are obtained.

Journal: :یادگیری الکترونیکی (مدیا) 0
ونوس صابرزاده venous saberzadeh shiraz university of medical sciencesدانشگاه علوم پزشکی شیراز

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Journal: :iranian journal of radiology 0
jin young chang hallym sacred heart hospital, anyang, republic of korea jin hee moon hallym sacred heart hospital, anyang, republic of korea; hallym sacred heart hospital, anyang, republic of korea. tel: +82-313805969 sung hye koh hallym sacred heart hospital, anyang, republic of korea sun-young park hallym sacred heart hospital, anyang, republic of korea kwan seop lee hallym sacred heart hospital, anyang, republic of korea

results of the 133 breast lesions, 32 were malignant and 101 were benign. in the differentiation of benign and malignant lesions, conventional us resulted in sensitivity of 100 %, specificity of 43.0 %, ppv of 57.1 %, npv of 36.7 %, and accuracy of 100 %. regarding swe, the sensitivity, specificity, ppv, npv, and accuracy values based on emax were 84.4 %, 89.1 %, 71.1 %, 94.7 %, and 88.0 %, res...

Journal: :آب و خاک 0
رضا بدیع زادگان کاظم اسماعیلی محمود فغفور مغربی مجتبی صانعی

abstract one of the most frequently encountered cases of rapid varied flow is the hydraulic jump. it occurs when a supercritical open channel flow changes into sub critical flow. in the present research, the experimental study of the hydraulic jump on seven sinusoidal corrugated beds with different wave steepness. the wave steepness of sinusoidal corrugated beds is in the range of 0.1667 to 0.7...

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