نتایج جستجو برای: wave velocity for applying avo technique

تعداد نتایج: 10629470  

Journal: :فیزیک زمین و فضا 0
فرزام یمینی فرد استادیار، پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران علی مرادی استادیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران

tehran, iran’s capital with a population of more than 10 million is located in the southern foothills of the alborz collision zone. the alborz mountain belt of northern iran results from the collision of a piece of the gondwana with eurasia in the late triassic (sengor et al., 1988). the alborz active mountain range which consists of several sedimentary and volcanic layers, with east-west trend...

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...

2012
A. S. Alofi

The Benjamin-Bona-Mahony equation has improved short-wavelength behaviour, as compared to the Korteweg-de Vries equation, and is another uni-directional wave equation with cnoidal wave solutions. Cnoidal wave solutions can appear in other applications than surface gravity waves as well, for instance to describe ion acoustic waves in plasma physics. Using a computerized symbolic computation tech...

M.G Gorla R Kumar, R Vohra,

The present study is concerned with the variational principle and plane wave propagation in double porous thermoelastic infinite medium. Lord-Shulman theory [2] of thermoelasticity with one relaxation time has been used to investigate the problem. It is found that for two dimensional model, there exists four coupled longitudinal waves namely longitudinal wave (P), longitudinal thermal wave (T),...

Journal: :international journal of civil engineering 0
f. hajivalie no.23, golsar alley, sharifi st., beheshti st., karaj a. yeganeh bakhtiary iran university of science and technology

in this paper, a two-dimensional reynolds averaged navier-stokes (rans) model is developed to simulate the shoaling, breaking and overtopping of a solitary wave over a vertical breakwater. turbulence intensity is described by using a k turbulence closure model and the free surface configuration is tracked by volume of fluid (vof) technique. to validate the numerical model the simulation result...

بادامچی‌زاده, زهره, تجلی‌زاده خوب, یاسر, جعفرآقایی, فاطمه, درودیان, زهرا, شریفی, فرشاد, فخرزاده, حسین, محمودی, محمد جعفر, مهرداد, ندا,

Background: The relationship between serum homocysteine levels and cardiovascular diseases has been elucidated since many years ago. In this study, the association between serum levels of homocysteine, folic acid, and vitamin B12 with the pulse wave velocity and Buckberg index or subendocardial viability ratio was assessed in individuals with diabetes and also non-diabetic subjects. Metho...

A Singhal S Chaudhary, S.A Sahu

In this study, we consider the propagation of the Love-type wave in piezoelectric gradient covering layer on an elastic half-space having an imperfect interface between them. Dispersion relation has been obtained in the form of determinant for both electrically open and short cases. The effects of different material gradient coefficients of functionally graded piezoelectric material (FGPM) and ...

Journal: :int. journal of mining & geo-engineering 2012
roohollah parvizi gholam hossain norouzi fereydoun sahabi

avo as a known methodology is used to identify fluid type and reservoir lithology in subsurface exploration. method discussed in this paper, consists of three stages, including: direct modeling, inverse modeling and cross plot interpretation. by direct modeling we can clarify lithology or fluid dependent attributes. analysis performed using both p-p and p-sv attributes. inverse modeling deals w...

Mohammad Farough Hosseini Mojtaba Ganji Soroush Fouladchi

Wave propagation is used as an advanced tool of determining elastic properties of rocks. In spite of being cheap and non destructive tests of rock mechanics, due to its modernity method is not yet replacing the traditional dear and destructive tests. In order to pave ways of replacing this test and making best use of it all effective factors of such method are to be assessed. One fundamental fa...

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