Very small implanted permanent magnets guided by large electromagnetic coils have been proposed previously as a method for delivering hyperthermia to or guiding catheters through brain tissue. This procedure is termed “magnetic stereotaxis.” Early efforts employed a single coil on a movable boom, a design that proved logistically difficult to use on human patients. The present work deals instea...

In electric vehicle applications, the torque density of motor plays an important role in improving performance vehicle. The main objective this paper is to investigate a possible method for permanent magnet synchronous used vehicles. At same time, other machine specifications were taken into account and kept within acceptable level. This was achieved by incorporating enhancement strategies such...

This study presents a simple design for a mobile, single-sided nuclear magnetic resonance (NMR) apparatus which uses the magnetic flux parallel to the magnetization direction of a single, disc-shaped permanent magnet polarized in radial direction. The stray magnetic field above the magnet is approximately parallel to the magnetization direction of the magnet and is utilized as the B(0) magnetic...

the effects of high temperature homogenization and low temperature annealing treatments on the microstructure and magnetic properties of sintered magnets of an nd17fe76.5b5cu1.5 type alloy have been investigated. the microstructure of the as-cast alloy, consisted of three phases including a nd2fe14b1 (2:14:1- type) matrix phase cu-containing nd-rich phase and free α-iron. the as-sintered magnet...

In modern magnetic resonance imaging (MRI), patients are exposed to strong, nonuniform static magnetic fields outside the central imaging region, in which the movement of the body may be able to induce electric currents in tissues which could be possibly harmful. This paper presents theoretical investigations into the spatial distribution of induced electric fields and currents in the patient w...

Magnetic field therapy has recently become a widely used complementary/alternative medicine for the treatment of vascular, as well as other musculoskeletal pathologies, including soft tissue injuries. Recent studies in our laboratory and others have suggested that acute static magnetic field (SMF) exposure can have a modulatory influence on the microvasculature, acting to normalize vascular fun...

The follow-up of the construction of superconducting magnets for accelerators requires setting up of powerful diagnostic tools to detect weak electrical points in the superconducting coils at various stages of their fabrication. In particular some electrical short circuits well detectable after collaring of the magnet often disappear after the coil is uncollared for repair; therefore it is pref...