Foreign body ingestion is a common paediatric problem. In the majority of cases spontaneous passage occurs. Magnet ingestion is rare and solitary magnet ingestion usually does not cause any complications. A number of gastrointestinal complications have been reported, such as fistula formation, perforation and volvulus following multiple magnet ingestion. We review magnet ingestion and describe ...

“One day in the year of 1820, walking to his lecture at the University of Copenhagen, Oersted got an idea. If static electricity did not affect magnets in any way, maybe things would be different if one tried electricity moving through the wire connecting the two poles of the Volta pile. Arriving at the classroom filled with a crowd of young students, Oersted placed on the lecture table his Vol...

Zebrafish (Danio rerio) offer advantages as model animals for studies of inner ear development, genetics and ototoxicity. However, traditional assessment of vestibular function in this species using the vestibulo-ocular reflex requires agar-immobilization of individual fish and specialized video, which are difficult and labor-intensive. We report that using a static magnetic field to directly s...

www.expert-reviews.com ISSN 1473-7175 © 2010 Expert Reviews Ltd 10.1586/ERN.10.95 Transcranial magnetic stimulation Description of the method & devices Transcranial magnetic stimulation (TMS) involves inducing an electrical current within the brain using pulsating magnetic fields, which are generated outside the brain near the scalp. The essential feature is using electricity to generate a rapi...

One of the main challenges in developing magnetic resonance imaging (MRI) systems is to create a static coil that needs to generate magnetic field density along with the characteristics of optimal homogeneity and magnitude size. To do this, two N42 Block PMs are used and the iron core is designed and optimized in accordance with the dimensions of PM pieces using ANSYS Maxwell software. Then, al...

Abstract This paper presents the robust detection of interturn short circuit fault double redundant permanent magnet synchronous motor. In static coordinate system and dq-axis system, mathematical model state is established. Further, residual signal current caused by turn-to-turn predicted using Luenberger observer. Next, marker phase are obtained processing signal. Finally, processor performs ...

Yunkai Huang 1, Baocheng Guo 1,*, Ahmed Hemeida 2 and Peter Sergeant 2 1 Engineering Research Center for Motion Control of Ministry of Education, Southeast University, Nanjing 210096, China; [email protected] 2 Department of Electrical Energy, Systems and Automation, Ghent University, Ghent B-9000, Belgium; [email protected] (A.H.); [email protected] (P.S.) * Correspondence: guobaocheng...

The objectives of this survey were to examine the effectiveness of 4UlcerCare in preventing recurrence of leg ulcers after healing and also to estimate the potential cost savings to the significant UK National Health System (NHS) spending each year on ulcer management. Subjects surveyed had ulcers for on average 4.4 years before use of 4UlcerCare but these ulcers healed within an average of 3.5...