نتایج جستجو برای: relaxation
تعداد نتایج: 77120 فیلتر نتایج به سال:
Semidefinite optimization relaxations are among the widely used approaches to find global optimal or approximate solutions for many nonconvex problems. Here, we consider a specific quadratically constrained quadratic problem with an additional linear constraint. We prove that under certain conditions the semidefinite relaxation approach enables us to find a global optimal solution of the unde...
Crocus sativus L. (saffron) is a widely used food additive for its color and taste. The hypotensive effects of saffron have been shown in previous studies. The aim of this study was to evaluate the mechanism of vasodilatory effects induced by saffron on isolated rat aorta.To study the vasodilatory effects of saffron aqueous extract (0.5, 1 and 2 mg/mL), isolated rat thoracic aorta rings were co...
Background and objective: In the nursing profession, there are numerous factors which altogether cause occupational stress and as a result occupational exhaustion in nurses and decrease the quality of patient care. Regarding the importance of this issue which influences the health indices of the society, this study investigates the effect of progressive muscle relaxation on the occupational str...
In this study, for the first time, a comparison of single-relaxation-time, multi-relaxation-time and entropic lattice Boltzmann methods on non-uniform meshes is performed and application of these methods for simulation of two-dimensional cavity flows, channel flows and channel flows with sudden expansion is studied in the slip and near transition regimes. In this work, Taylor series expansion a...
Background and purpose: Anorectal manometry is a suitable diagnostic method in children with chronic constipation and could provide useful information on the causes of constipation. This study was done to evaluate the therapeutic response of standard treatment and improve the diagnostic method via assessment of manometric parameters before and after the standard treatment. Materials and method...
Objective(s): Relevance between magnetic resonance imaging (MRI) relaxation rate and concentration of magnetic nanoparticles determines the capability of a nanomaterial to provide MRI contrast. In the present study, alginate was conjugated to gadolinium/graphene oxide nanocomposite to form gadolinium/graphene oxide/alginate nanocomposite, aiming to investigate its effect on the relevance betwee...
Background: Dialysis adequacy is one of the determining factors for survival in elderly patients. Improving the dialysis adequacy highly affects the remission and prognosis of old dialysis patients. Current study was conducted to evaluate the effects of Jacobson relaxation technique on dialysis adequacy in elderly people, who are under dialysis treatment. Methods: ods: This is a clinical trial...
Introduction: Nano-indentation has recently been employed as a powerful tool for determining the mechanical properties of biological tissues on nano and micro scales. A majority of soft biological tissues such as ligaments and tendons exhibit viscoelastic or time-dependent behaviors. The constitutive characterization of soft tissues is among very important subjects in clinical medicine and espe...
The dynamics in highly asymmetric mixtures with large difference Tg of the two components are complex. At low values lower-Tg2 component only ?1-relaxation and its Tg?1 were found together a fast relaxation. Three different interpretations relaxation given. first one interpreted as JG ?-relaxation, ?2-relaxation is present but not resolved. second it localized noncooperative ??-relaxation low-T...
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