scholarly journals Recycling of Rare Earth Magnet Scraps as Magnetic Materials

2004 ◽  
Vol 51 (3) ◽  
pp. 160-164
Author(s):  
Ken-ichi Machida ◽  
Masahiro Itoh ◽  
Masahiro Masuda ◽  
Seiji Kojima
Keyword(s):  
Rare Earth ◽  
Magnetic Materials ◽  
Rare Earth Magnet

scholarly journals Special Issue: Advances in Computational Electromagnetics

2021 ◽  
Vol 7 (6) ◽  
pp. 89
Author(s):  
Valerio De Santis
Keyword(s):  
Rare Earth ◽  
Magnetic Materials ◽  
Permanent Magnets ◽  
Computational Electromagnetics ◽  
Superconducting Materials ◽  
Special Issue ◽  
Full Characterization ◽  
Recent Advances

Recent advances in computational electromagnetics (CEMs) have made the full characterization of complex magnetic materials possible, such as superconducting materials, composite or nanomaterials, rare-earth free permanent magnets, etc [...]

scholarly journals Retrospective analysis of pediatric patients with multiple rare-earth magnets ingestion: a single-center experience from China

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yucan Zheng ◽  
Zhihua Zhang ◽  
Kunlong Yan ◽  
Hongmei Guo ◽  
Mei Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Digestive Tract ◽  
Foreign Bodies ◽  
Clinical Symptoms ◽  
Medical Center ◽  
Rare Earth Magnet ◽  
Gastrointestinal Obstruction ◽  
Asymptomatic Patients ◽  
Significant Difference ◽  
Surgical Group

Abstract Background The aim of this study was to characterize patients who ingested multiple rare-earth magnets, reveal the harm of rare-earth magnet foreign bodies in the digestive tract, and develop a clinical management algorithm. Methods This was a retrospective review of patients with rare-earth magnet foreign bodies in the digestive tract admitted to a university-affiliated pediatric medical center in China, between January 2016 and December 2019; the subset of medical data evaluated included clinical symptoms, signs, treatments and outcomes. Results A total of 51 cases were included in this study, including 36(70.6%) males and 15(29.4%) females. The magnets were passed naturally in 24(47.1%) patients and removed by intervention in 27(52.9%) patients, including 5(9.8%) cases by endoscopy and 22(43.1%) cases by surgery. Twenty-two (43.1%)cases had gastrointestinal obstruction, perforation, and fistula. Compared with the non-surgical group, the time of the surgical group from ingestion to arriving at the hospital was longer([80(5–336) vs 26(2–216)]hours, p < 0.001) while there was no significant difference in the mean age or the number of magnets swallowed. Conclusions Magnets are attractive to children, but lead to catastrophic consequences including gastrointestinal obstruction, perforation, and surgical interventions when ingested multiple magnets. Endoscopic resection should be urgently performed in the presence of multiple magnets as early as possible within 24 h, even in asymptomatic patients.

ChemInform Abstract: Mesoporous Magnetic Materials Based on Rare Earth Oxides.

ChemInform ◽  
2010 ◽  
Vol 31 (11) ◽  
pp. no-no
Author(s):  
Mitsunori Yada ◽  
Hirohumi Kitamura ◽  
Akira Ichinose ◽  
Masato Machida ◽  
Tsuyoshi Kijima
Keyword(s):  
Rare Earth ◽  
Magnetic Materials ◽  
Rare Earth Oxides

scholarly journals A Three-Dimensional Magnetic Force SolutionBetween Axially-Polarized Permanent-Magnet Cylinders for Different Magnetic Arrangements

2020 ◽  
Vol 7 ◽  
Keyword(s):  
Experimental Data ◽  
Rare Earth ◽  
Field Strength ◽  
Permanent Magnet ◽  
Magnetic Force ◽  
Three Dimensional ◽  
Method Of Images ◽  
Field Equations ◽  
Rare Earth Magnet ◽  
Finite Sums

A three-dimensional field solution is presented foraxially polarized permanent magnet cylinders. The fieldcomponents are expressed in terms of finite sums of elementaryfunctions and are easily programmable. They can be used todetermine the operating point of rare-earth magnet cylinders.They are also useful for performing rapid parametriccalculations of field strength as a function of materialproperties and dimensions. The field components aredeveloped for different magnet arrangements by taking intoaccount the back iron. Also the method of images is used. Usingthe field equations, three-dimensional analytical expressionsare derived for computing the magnetic force between axiallypolarized permanent-magnet cylinders for different magneticarrangements. The field calculated results are in goodagreement with the experimental data.

Technology Development for Transition Metal-Rare Earth High-Performance Magnetic Materials

1973 ◽  
Author(s):  
J. J. Becker ◽  
M. G. Benz ◽  
R. E. Cech ◽  
R. J. Charles ◽  
M. Doser
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Magnetic Materials ◽  
High Performance ◽  
Technology Development
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