نتایج جستجو برای: like variable described below

تعداد نتایج: 1391586  

Journal: :Veins and Lymphatics 2022

The assessment of the saphenofemoral junction (SFJ) is important in diagnosis and treatment venous reflux great saphenous vein (GSV). In clinical practice medicine, SFJ used to represent region at which arch connects with common femoral (CFV). A number notable variations have been documented, rare variable courses GSV described recently. Our case study reports two unusual terminations. both cas...

2008
P. Arévalo I. M. McHardy A. Markowitz I. E. Papadakis T. J. Turner J. Reeves

We compute Fourier-resolved X-ray spectra of the Seyfert 1 Markarian 766 to study the shape of the variable components contributing to the 0.3–10 keV energy spectrum and their time-scale dependence. The fractional variability spectra peak at 1–3 keV, as in other Seyfert 1 galaxies, consistent with either a constant contribution from a soft excess component below 1 keV and Compton reflection com...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1372

a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...

Journal: :journal of applied and computational mechanics 0
dario abbondanza dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy daniele battista dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy francescogiuseppe morabito dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy chiara pallante dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy raffaele barretta dipartimento di strutture per l’ingegneria e l’architettura, università degli studi di napoli “federico ii”, naples, italy raimondo luciano dipartimento di ingegneria civile e meccanica, università degli studi di cassino e del lazio meridionale, cassino (fr), italy francesco marotti de sciarra

linear dynamic response of simply supported nanobeams subjected to a variable axial force is assessed by galerkin numerical approach. constitutive behavior is described by three functional forms of elastic energy densities enclosing nonlocal and strain gradient effects and their combination. linear stationary dynamics of nanobeams is modulated by an axial force which controls the global stiffne...

Journal: :international journal of fertility and sterility 0
marzieh shiva mitra frotan arezoo arabipoor elahe mirzaaga

in surrogate pregnancies genetic parents have little opportunity for early bonding with their infants either prenatally (in utero) or during the immediate postnatal period. procedures commonly used to induce lactation include both pharmacologic and nonpharmacologic methods often in combination. studies reporting induced lactation are sparse due to the rarity of augmented lactation. here we repo...

Journal: :روش های عددی در مهندسی (استقلال) 0
جعفر سلطانی و محمد فلاح j. soltani and m. fallah

in this paper, computer simulation of a three-phase synchronous motor drive is described. this drive/system is supplied with a new type of pulse-width modulated voltage source inverter (pwm vsi) whose amplitude of the first harmonic, compared to a conventional sinusoidal pwm vsi, is increased by about 17% and whose amplitude of higher harmonics is also reduced inversely proportional to their or...

A. R. Ashrafi F. Gholami-Nezhaad Katalin Nagy Mircea V. Diudea Monica L. Pop

Design of crystal-like lattices can be achieved by using some net operations. Hypothetical networks, thus obtained, can be characterized in their topology by various counting polynomials and topological indices derived from them. The networks herein presented are related to the Dyck graph and described in terms of Omega polynomial and PIv polynomials.

A global nonlinear stability analysis is performed for a couple-stress fluid layer heated from below saturating a porous medium with temperature-pressure dependent viscosity for different conducting boundary systems. Here, the global nonlinear stability threshold for convection is exactly the same as the linear instability boundary. This optimal result is important because it shows that lineari...

Laminar two dimensional forced convective heat transfer of Al2O3 –water nanofluid in a horizontal microchannel has been studied numerically, considering axial conduction, viscous dissipation and variable properties effects. The existing criteria in the literature for considering viscous dissipation in energy equation are compared for different cases and the most proper one is applied for the re...

A. K. ‎Singh‎ B. S. Bhadauria‎ I. Hasim‎ J. M. Jawdat‎ Vinod K‎. ‎Gupta‎,

‎In this paper‎, ‎we have investigated the chaotic behavior of thermal convection in couple stress liquid saturated porous layer subject to gravity‎, ‎heated from below and cooled from above‎, ‎based on theory of dynamical system‎. ‎A low dimensional Lorenz‎- ‎like model is obtained by using Galerkin-truncation approximation‎. ‎We found that there is proportional relation between scaled couple ...

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