نتایج جستجو برای: rwm
تعداد نتایج: 141 فیلتر نتایج به سال:
DIII-D experiments show that the resistive wall mode (RWM) can remain stable in high β scenarios despite a low net torque from nearly balanced neutral beam injection (NBI) heating. The minimization of magnetic field asymmetries is essential for operation at the resulting low plasma rotation of less than 20 krad/s (measured with charge exchange recombination spectroscopy using C VI emission) cor...
This paper describes the modeling of the feedback control and rotational stabilization of the resistive wall mode (RWM) in tokamaks. A normal mode theory for the feedback stabilization of the RWM has been developed for an ideal plasma with no toroidal rotation. This theory has been numerically implemented for general tokamak geometry and applied to the DIII-D tokamak. It is found that feedback ...
Methods Patients referred for assessment of ARVD/C were evaluated. Using 2010 ARVD/C Task Force criteria, clinical history, family history, ECG and other test results were evaluated with and without CMR findings to determine definite, borderline or possible ARVD/C. CMR included assessment of right ventricular(RV) size, function, and regional wall motion(RWM). For alternative diagnoses, tissue c...
BACKGROUND Experimental evidence indicates that magnesium sulfate may have potential cardioprotective properties as an adjunct to coronary reperfusion. The present study was designed to examine the hypothesis that magnesium might have beneficial effects on left ventricular (LV) function and coronary microvascular function in patients with acute myocardial infarction (AMI). METHODS AND RESULTS...
A general circuit formulation of resistive wall mode ~RWM! feedback stabilization developed by Boozer @Phys. Plasmas 5, 3350 ~1998!# has been used as the basis for the VALEN computer code that calculates the performance of an active control system in arbitrary geometry. The code uses a finite element representation of a thin shell structure in an integral formulation to model arbitrary conducti...
BACKGROUND Electrocardiographic gated 13N-ammonia positron emission tomography (PET) enables simultaneous assessment of myocardial blood flow and left ventricular (LV) function. The aim of this study was to assess the accuracy of gated 13N-ammonia PET for evaluating global and regional LV function in patients with coronary artery disease (CAD) in comparison with conventional left ventriculograp...
METHODS Reinjection-g-SPECT, MIBI-g-SPECT, and three-dimensional magnetic resonance imaging (3DMRI) were conducted in 20 patients with coronary artery disease. Regional wall motion (RWM) and wall thickening (RWT) were analyzed using semiquantitative visual scoring by each g-SPECT and 3DMRI. The left ventricular end-systolic and end-diastolic volumes (EDV, ESV) and LVEF estimated by reinjectiona...
This paper focuses on Indo-Iranian merchandise trade for a period of 30 years from1980-81 to 2009-10. The study is based on econometric modeling comprising 3 versions of the RWM model and alternative forms and specification of regression functions. RWM model(s) evaluates the stationary nature of time series data relating to GNP, Exports, Imports and total merchandise Indo-Iranian trade. Dickey-...
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