The coil-to-globule transition of two poly(N-isopropylacrylamide) (PNIPAM) ionomers with different ionic contents (0.8 and 4.5 mol %), but similar weight average molar masses, in deionized water was investigated by a combination of static and dynamic light scattering. In spite of the large difference in their ionic contents, both the ionomers have a nearly same lower critical solution temperatu...

INTRODUCTION Transmit array spatial encoding (TRASE) is a novel MRI technique that utilizes B1-field phase gradients as the means for traversing k-space [1-3]. This method allows MRI to be performed without the usual application of B0-field amplitude gradients, thereby possibly eliminating the equipment, complexity, power consumption and acoustic noise associated with traditional static-field g...

This study aims to establish a hysteretic model order reduction method for electric machines using the Cauer ladder network (CLN) method. The first inductor of CLN represents hysteresis effect, which is computed scalar play identified from static I– ϕ (current–magnetic flux) loops. An iron-core was analyzed, and pulse-width modulation (PWM) voltage input applied coil. proposed yielded results t...

H. H. Hu, A. J. Madhuranthakam, D. G. Kruger, J. F. Glockner, S. J. Riederer MRI Research Lab and Department of Radiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States Introduction: SENSE is a parallel imaging method [1] that has been used to provide reduction in acquisition time or improvement in spatial resolution in a variety of clinical applications. The basis for SE...

Magnetic resonance elastography (MRE) is a recently developed technique for determining the mechanical properties of biological tissue. In dynamic MRE, electromagnetic units (actuators) are widely used to generate shear waves in tissue. These actuators exploit the interaction between the static magnetic field B(0) and an annular coil supplied with alternating currents. Therefore, coil movements...

I N RECENT TIMES, wireless power charging of electric vehicles (EV) has gained huge attentions. Static wireless charging for EVs has seamlessly been achieved using the inductive power transfer (IPT) technology. More recently, dynamic (also termed in-motion) wireless charging with IPT technology has been successfully demonstrated for electric mass transportation means like electric trains, trams...

Upper airway MRI can provide a noninvasive assessment of speech and swallowing disorders and sleep apnea. Recent work has demonstrated the value of high-resolution three-dimensional imaging and dynamic two-dimensional imaging and the importance of further improvements in spatio-temporal resolution. The purpose of the study was to describe a novel 16-channel 3 Tesla receive coil that is highly s...

The active magnetic bearing (AMB) is an integral part of the industrial rotational machine. The paper deals with simulation study of three and four coil AMB utilizing Finite Element Method (FEM). This paper also presents how ANSYS software (Ver. 12.1) can be used to perform the magnetic field analysis in the AMB. This work reports ANSYS simulation for two different structure of AMB that uses th...

Nowadays, MRI is focused on using ultra-high static magnetic fields (> 7 T) to increase the signal-to-noise ratio. The use of high fields, other hand, requires novel technical solutions as well more stringent design criteria for specific absorption rate levels, reducing radiative effect and coil resistance. In this paper, two flexible RF coils T human resonance, 298 MHz frequency operations wer...