A permanent magnet synchronous motor (PMSM) with rotor embedded segmented permanent magnet was analyzed. The structural features and flux weakening principle are introduced. The shape of the rotor is optimized to get a sinusoidal air gap magnetic density waveform and reduce the toque ripple. The whole-permanent-magnet (PM) motor and the segmented-permanent-magnet motor are compared from the asp...

BACKGROUND It is not clear whether Magnet recognition by the American Nurses Credentialing Center (nursing excellence program) is associated with improved patient outcomes. We investigated whether hospitalization in a Magnet hospital is associated with improved outcomes for patients with ischemic stroke. METHODS AND RESULTS We performed a cohort study of patients with ischemic stroke from 200...

Internally-balanced Magnetic Unit (IB Magnet) has been developed as a fundamental technique of wall climbing robots. This unit comprises of a permanent magnet which generates a strong sticking force, and a spring unit which cancels the internal force so that the unit can provide easy sticking and releasing actions. In this paper, the authors aim to enlarge usefulness of IB Magnet by several app...

A p o l y h e l i x magnet w i t h a B i t t e r c o i l (duplex magnet) o r w i t h a superconducting c o i l ( h y b r i d magnet) f o r the background f i e l d generat ion, i s known t o produce the h ighest magnetic f i e l d s . Numerical ca lcu la t ions i n v o l v i n g system parameters establ ished i n the course o f 1000 hours o f operat ion o f the Grenoble duplex magnet a re used ...

A common problem for elliptically polarizing undulators (EPUs) is that the magnetic forces give a mechanical deflection in the magnet holder construction when changing the undulator phase. Gluing horizontally and vertically magnetized blocks together can increase the mechanical stability of the magnet holders. The gluing process of pairs of magnetized magnet blocks is time-consuming, expensive ...

BACKGROUND The superconducting cyclotron is of great importance to treat cancer parts of the body. To reduce the operation costs, a superconducting magnet system for the 250 MeV proton cyclotron was designed to confirm the feasibility of the superconducting cyclotron. FINDINGS The superconducting magnet system consists of a pair of split coils, the cryostat and a pair of binary high temperatu...

Is there a difference in the level of job satisfaction among clinical nurses employed at magnet versus nonmagnet hospitals, and is it linked to nurse executive leadership? To answer these questions, 305 clinical nurses employed at magnet and nonmagnet hospitals rated their perceptions of job satisfaction while 16 leaders from the same hospitals were interviewed for their perception of their rol...

This study looked at the effect of an external magnet on the biodistribution of magnetoliposomes intravenously administrated in mice (8 mg iron/kg) with and without induced acute inflammation. Our results showed that due to enhanced vascular permeability, magnetoliposomes accumulated at the site of inflammation in the absence of an external magnetic field, but the amount of iron present increas...