نتایج جستجو برای: nodal force

تعداد نتایج: 207195  

امین الشریعه نجفی , سروش, بداغ آبادی , فخری, خوری , وحید, صالحی , عارف, علی زاده , علی محمد, علی زاده , فاطمه, نایب پور , سیدمحسن, پورابوک , منا, چنگیزی , شیما,

Background and purpose: Several previous studies have shown the direct and indirect effects of statins on supraventricular and ventricular arrhythmia. The purpose of the present study is to determine (1) whether Simvastatin modifies the rate-dependent properties of the ÂV node, (2) to what extent such changes are related to effect of Simvastatin on the basic properties of ÂV nodal conduction ...

Journal: :Journal of the Acoustical Society of America 2021

The dynamical motion of a pair microparticles exposed to acoustic standing waves and located at the pressure nodal plane is studied using numerical simulations experiments. insight into their behavior along due competition between axial primary radiation interparticle forces elucidated. An expression for force acting on particle derived, dynamics simulated fluid-structure interaction model base...

M. Ghayeni, R. Ghazi,

This paper presents a method to allocate the transmission network costs to users based on nodal pricing approach by regulating the nodal prices from the marginal point to the new point. Transmission nodal pricing based on marginal prices is not able to produce enough revenue to recover the total transmission network costs. However, according to the previous studies in this context, this met...

Introduction: Clinical examination and even anatomical imaging may fail to identify primary site of malignancy in patients presenting with cervical nodal metastasis. 18F-Fluorodeoxyglucose Positron Emission Computed Tomography (18F-FDG PET-CT) is known to overcome the limitations of anatomic imaging. Methods: Sixty-three (63) patient...

Journal: :research in cardiovascular medicine 0
maryam shojaeifard echocardiography research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran mohammadali sadr-ameli cardiac electrophysiology research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran; cardiac electrophysiology research center, rajaie cardiovascular medical and research center, vali-asr ave., niyayesh blvd., p. o. box: 1996911151, tehran, ir iran. tel: +98-2123923017, fax: +98-2122663213 sadaf sadr-ameli medical engineering faculty, department of medical engineering, sciences and research branch, islamic azad university, tehran, ir iran mona heidarali cardiac electrophysiology research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran monireh soltani rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran behshid ghadrdoost rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran

conclusions echocardiography and 2d speckle tracking strain imaging shows improvements in left ventricular deformation indices in atrioventricular reentrant tachycardia (avrt) and atrioventricular nodal reentrant tachycardia (avnrt) patients for the mean systolic strain and strain rate at 24 hours and the three-month follow-up. in spite of the normal lvef, even during sinus rhythm, deformation ...

Introduction: The aim of the present study was to determine direct effects of NO modulation on protective electrophysiological properties of atrioventricular node (AV node) in the experimental model of AF in rabbit. Methods: Isolated perfused rabbit AV nodal preparations were used in two groups. In the first group (N=7), LNAME (50μM) was applied. In the second group (N=12), different concent...

Journal: :journal of sciences, islamic republic of iran 2013
g. h. shirdel shirdel

in the maximum flow network interdiction problem, an attacker attempts to minimize the maximum flow by interdicting flow on the arcs of network. in this paper, our focus is on the nodal interdiction for network instead of the arc interdiction. two path inequalities for the node-only interdiction problem are represented. it has been proved that the integrality gap of relaxation of the maximum fl...

Aref Salehi, elnaz rakhshan, mohsen nayebpour, vahid khori,

Objectives: Dual pathways have a determinant role in the occurrence of atrio nodal tachyarrhythmia (AVNRT). The aim of present study is to determine the role of slow pathway (SP) in the concealment zone and protective role of AV node during atrial fibrillation (AF). Material &Methods: In 7 isolated nodal rabbit preparation zone of concealment and concealed conduction is quantified by Specif...

Journal: :The Journal of General Physiology 1960
Akira Watanabe Theodore H. Bullock

A direct demonstration is given of interaction between specific neurons without impulses, via graded slow potentials electrotonically spread from one cell to another. Repetitive polarizing or depolarizing current pulses of 50 to 200 msec. and subthreshold intensity were passed through an intracellular electrode in the soma of a follower cell of the isolated ganglion. When the frequency is near ...

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