BACKGROUND End-stage renal disease (ESRD) patients exhibit an extraordinarily high annual mortality secondary to cardiac and vascular causes, particularly sudden cardiac death (SCD). Left ventricular (LV) hypertrophy is a frequent finding and constitutes an independent predictor of mortality risk in these patients. Mineralocorticoid receptor antagonists (MRAs) are cardioprotective in heart fail...

BACKGROUND AND PURPOSE Blood flow in an intracranial stent cannot be visualized with 3D time-of-flight MR angiography owing to magnetic susceptibility and radiofrequency shielding. As a novel follow-up tool after stent-assisted coil embolization, we applied MRA by using a Silent Scan algorithm that contains an ultrashort TE combined with an arterial spin-labeling technique (Silent MRA). The pur...

− Accurate knowledge of stator resistance is of utmost importance for correct operation of a number of speed sensorless induction motor control schemes in the low speed region. Since stator resistance inevitably varies with operating conditions, stable and accurate operation at near-zero speed requires an appropriate on-line identification algorithm for the stator resistance. The paper proposes...

This paper seeks to analyse stability and dynamics of back EMF MRAS based approach used in sensorless control of induction motors. Stability analysis is investigated to show unstable zones and it is explored using a state representation. A new rotor speed estimator is designed to achieve the stability in the various operating modes except for the inobservability line. c ⃝ 2015 International Ass...

A speed estimation method is presented in this paper for a grid-connected doubly-fed slipring induction machine drive. The proposed method is formulated with reactive power based model reference adaptive system (MRAS). The method does not require the estimation of stator/rotor flux. So, the integrator related problems at synchronous speed are overcome. Also, the estimation method is independent...

OBJECTIVE Developmental venous anomalies (DVAs) are benign anatomic variations; therefore, they are usually discovered incidentally. The aim of this article was to describe radiological findings of DVAs. METHODS A retrospective search for DVAs of the brain was performed in 1899 patients who had undergone magnetic resonance imaging (MRI) with contrast enhancement between January 1, 2005 and Ap...

This paper evaluates different types of AC machines and various control techniques for their suitability for the drive system of Alternative Energy Vehicles (AEV). An Indirect Field Oriented (IFO) drive system for the AEV application is chosen and its major problem of detuning is addressed by designing an offline and an online rotor resistance adaptation technique. The offline scheme sets the s...

A mutual Model Refereme Adaptive System, (MRAS) con,tainmg two m,odeBs is proposed to i m plem:ent a! position! sensorless Field Orientat ion Control (FOC) of a n in8duction, mack,in,e. For the rotor speed estim,ation,, one m#odel is used as a reference model and m o t h e r is the ad@stahk m.odel. Pure integration and stator leakage indu.ctance are rem,oved f r o m th,e refere n w model, re.su...

Madagascine (3-isopentenyloxyemodin) can be chemically synthesized or purified from several Rhamnus species, and it is found to have more potent biological activities than the parent compound emodin. The aim of this study is to characterize the vasodilatory effect of madagascine on vasoconstriction and sphingosylphosphorylcholine induced vasospasm in ex vivo and reveal the potential mechanisms ...