نتایج جستجو برای: critical blood velocity

تعداد نتایج: 1267391  

Journal: :Mathematical modelling of engineering problems 2021

The research work explores blood flow into a stenosed artery, or one with abnormal growth within it. At the throats and at critical height of stenosis, mathematical computational models have been developed to calculate various associated parameters such as rate, pressure gradient, impedance, wall shear stress. Modeling power law fluid showed dependency these quantities on temporal spatial varia...

2013
Sabino Scolletta Bonizella Biagioli Federico Franchi Luigi Muzzi

Echocardiography is considered as the procedure of choice for the evaluation of cardiac performance and to gather other critical information both in the pre, intra and postoperative phases. Also, echo-Doppler-based methods can be used to calculate the flow velocity and volume and hence systemic blood flow. Unfortunately, due to intrinsic nature, echocardiog‐ raphy cannot be considered a bedside...

The concept of floating submerged tunnels becomes increasingly attractive idea to cross the straits. The structural solution in these bridges includes buoyancy force on tunnel body plus tension in mooring tethers. This paper investigates the effect of submergence on the dynamic response of submerged floating tunnels due to moving load. The inertial effect of the fluid on the submerged structure...

Journal: :مکانیک سیالات و آیرودینامیک 0
محمدرضا شاه نظری زهرا احمدی سیروس اقانجفی

in this paper, changes of casson non-newtonian fluid velocity profile, for different distribution of porosity, have been investigated. for distribution of porosity, fixed, radial and exponential variations has been considered. for all three states, brinkman model has been used as momentum equation. since the casson fluid is a good model for blood, this analysis can be used in studying about cho...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان کرمان 1386

چکیده ندارد.

Journal: :journal of computational applied mechanics 0
ali ghorbanpour arani professor, faculty of mechanical engineering, university of kashan, kashan, iran saeed amir assistant of professor, faculty of mechanical engineering, university of kashan, kashan, iran abbas karamali ravandia ms graduate, faculty of mechanical engineering, university of kashan, kashan, iran

in this study, nonlocal nonlinear instability and the vibration of a double carbon nanotube (cnt) system have been investigated. the visco-pasternak model is used to simulate the elastic medium between nanotubes, on which the effect of the spring, shear and damping of the elastic medium is considered. both of the cnts convey a viscose fluid and a uniform longitudinal magnetic field is applied t...

Journal: :Data Science Journal 2009
Satoru UeNo Katsunari Shibata Reizaburo Kitai K. Ichimoto S. Nagata H. Isobe G. Kimura Y. Nakatani M. Kadota T. T. Ishii Satoshi Morita K. Otsuji

The Flare Monitoring Telescope (FMT) was constructed in 1992 at Hida Observatory in Japan to investigate the long-term variation of solar activity and explosive events. It has five solar imaging telescopes that simultaneously observe the full-disk Sun at different wavelengths around the H-alpha absorption line or in different modes. Therefore, the FMT can measure the three-dimensional velocity ...

1998
Neta A. Bahcall Xiaohui Fan

The existence of the three most massive clusters of galaxies observed so far at z > 0.5 is used to constrain the mass density parameter of the universe, Ω, and the amplitude of mass fluctuations, σ 8. We find Ω=0.2 −0.4 (95 %). We show that the existence of even the single most distant cluster at z=0.83, MS1054–03, with its large gravitational lensing mass, high temperature, and large velocity ...

Journal: :Journal of science and medicine in sport 2011
Argyris G Toubekis Anthoula Vasilaki Helen Douda Vassilios Gourgoulis Savvas Tokmakidis

OBJECTIVES The purpose of this study was to examine the physiological responses on three interval training sets performed at intensities relative to the critical velocity which was calculated from two different combinations of distances using a 2-parameter linear model. METHODS In a controlled repeated measures design, ten male well trained swimmers (age: 15.2 ± 1.2 years) swam 5 × 400-m, 10 ...

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