نتایج جستجو برای: magnet

تعداد نتایج: 18990  

2014
F. Hassepass V. Stabenau S. Arndt R. Beck S. Bulla T. Grauvogel A. Aschendorff

Purpose: Cochlear implantation (CI) represents the gold standard in the treatment of children born deaf and postlingually deafened adults. Initial magnetic resonance imaging (MRI) was contraindicated in CI users. Meanwhile, there are specific recommendations concerning MRI compatibility depending on the type of CI system and the device manufacturer. Some CI systems are even approved for MRI wit...

Journal: :IEEE Trans. Industrial Electronics 2012
Ackim Zulu Barrie C. Mecrow Matthew Armstrong

Investigation of the dq-Equivalent Model for Performance Prediction of Flux-Switching Synchronous Motors With Segmented Rotors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Zulu, B. C. Mecrow, and M. Armstrong 2393 Modeling and Parametric Design of Permanent-Magnet AC Machines Using Computationally Efficient Finite-Element Analysis . . . . . . . . . . . . . . . . ...

Journal: :TEION KOGAKU (Journal of the Cryogenic Society of Japan) 2011

Journal: :iranian journal of science and technology (sciences) 2014
a. hekmati

superconducting materials are capable of trapping extremely high magnetic fields. this property and meissner effect of superconductors causes a levitation force between bulk superconductors and a permanent magnet (pm). this levitation force has possible industrial applications such as permanent magnet guideways (pmg). because of the high price of permanent magnets, the optimization of pmg desig...

In this paper particle swarm optimization (PSO) is used for a design optimization of a linear permanent magnet synchronous motor (LPMSM) considering ultra low thrust force ripples, low magnet consumption, improved efficiency and thrust. The influence of PM material is discussed, too and the modular poles are proposed to achieve the best characteristic. PM dimensions and material, air gap and mo...

Journal: :TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 1988

2012
Kimberly E. Wooten Charles W. Hartin Doruk E. Ozgediz

INTRODUCTION Most foreign bodies that a child ingests pass harmlessly through the gastrointestinal tract. However, ingesting multiple magnets places a child at risk for serious viscus injury. CASE DESCRIPTION A 16-y-old boy swallowed multiple magnets and presented with abdominal pain and emesis. Upon laparoscopy, the boy was found to have malrotation with volvulus caused by a cecal magnet att...

2012
Krzysztof Falkowski

There will be presented a model of a passive magnetic bearing. The model uses the ring with molecular current as a source of external magnetic field (the unmovable magnet mounts in a case of machine). The next ring with molecular current moves in external field generated by unmovable ring (the magnet connects with the shaft of machine). The density of magnetic field is obtained from the Biota-S...

2003
Mark K. Gardner Wu-chun Feng Michael Broxton Adam Engelhart Justin Gus Hurwitz

As computing systems grow in complexity, the cluster and grid communities require more sophisticated tools to diagnose, debug and analyze such systems. We have developed a toolkit called MAGNET (Monitoring Apparatus for General kerNel-Event Tracing) that provides a detailed look at operating-system kernel events with very low overhead. Using the fine-grained information that MAGNET exports from...

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