Results 101 to 110 of about 3,593 (213)

Fault-Tolerant Redesign of a Quad-Winding PMSM to Prevent Irreversible Partial Demagnetization

Actuators
This paper proposes a fault-tolerant optimal design method for quad-winding permanent magnet synchronous motors (PMSMs) considering irreversible demagnetization under fault conditions.
Min-Seong Jo, Young-Joon Song, Kyung-il Woo, Kyu-Yun Hwang   +3 more
doaj   +1 more source

Dansgaard‐Oeschger Events Recorded in Low‐Latitude Marine Sediments and Teleconnection With High‐Latitude Climate Variations

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Dansgaard‐Oeschger (D‐O) events are millennial‐scale high‐latitude climate oscillations with abrupt climate transitions between stadial and interstadial conditions, which are well recorded in and outside of high northern latitudes. However, their signal propagation mechanisms from high to low latitudes are uncertain.
Zhanjie Liu, Zhaoxia Jiang, Long Chen, Andrew P. Roberts, Sanzhong Li, Liang Chen, Zhengxin Yin, Wanxin Liu, Yulong Guan, Yuzhen Zhang   +9 more
wiley   +1 more source

Synchronous Advance of the Alpine Glaciation Across the Northern and Southern Tibetan Plateau During the Mid‐Pleistocene Transition

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Chronological studies of glacial sediments from the Shishapangma and Yarlung Tsangpo River valley indicate that Quaternary glaciation on the southern Tibetan Plateau commenced at ∼0.75–0.83 Ma. However, the oldest glacial deposits in the northern plateau are dated to only ∼0.46 Ma, markedly later than the Middle Pleistocene glacial ...
Chengying Liu, Benhong Guo, Wenjiao Xiao, Zaijun Li, Linkai Wang, Fei Wang   +5 more
wiley   +1 more source

Pressure demagnetization: Electromagnetism meets thermodynamics

AIP Advances
By pressure demagnetization, take iron as an example, we mean either that, given an external magnetic field under a certain temperature, the magnetization becomes weaker as the pressure increases, which can be referred to as pressure demagnetization ...
S. F. Xiao, H. Zhao, Y. X. Wei, J. Z. Tan, Q. H. Liu   +4 more
doaj   +1 more source

Statistical Evaluation of a Foreshock Transient Model Using Ground‐Based ULF Wave Observations

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Hot flow anomalies and foreshock bubbles are discontinuity–driven foreshock transients that generate significant geospace disturbances. A recently developed analytical model can predict their upstream perturbations. In this study, we further evaluate this model by comparing its predictions with geomagnetic disturbances measured by ground‐based
Terry Zixu Liu, Vassilis Angelopoulos, Hui Zhang, Ying‐Dong Jia, Siqi Zhao   +4 more
wiley   +1 more source

Demagnetization analysis of outer-rotor-type BLDC motors considering permanent magnet overhang structure

AIP Advances
This paper presents an analysis of demagnetization of an outer rotor type brushless DC (BLDC) motor with a permanent magnet (PM) overhang structure.
Tae-Seong Kim, Hyo-Seob Shin, Jun-Won Yang, Yong-Joo Kim, Kyung-Hun Shin, Jang-Young Choi   +5 more
doaj   +1 more source

Paleomagnetic Constraints on the Separation of the Olongbuluke Block From the North China Block During the Late Cambrian–Middle Ordovician and Its Tectonic Significance

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract The collisional evolution of the micro‐blocks in the northeastern Tibetan Plateau is relatively well constrained. However, the reason why a fragment of the North China Block, the Olongbuluke Block, became separated from North China by the Central Qilian Block (a fragment of the South China Block) remains unclear.
Teng Wang, Yanan Zhou, Ruiyang Chai, Xin Cheng, Hanning Wu   +4 more
wiley   +1 more source

Research into methods of pipe end demagnetization under main pipeline repair

Electrical engineering & Electromechanics, 2014
Efficiency of pipe end demagnetization methods is experimentally investigated to avoid arc magnetism at repair welding jobs on main pipelines. It is found that multi-polar biased static and dynamic demagnetization provides an acceptable level of magnetic
P.N. Dobrodeyev
doaj  

Demagnetization of electromagnets [PDF]

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1872
openaire   +1 more source

Electronic mechanism of sub-100-fs demagnetization induced by a femtosecond light pulse. [PDF]

Sci Rep
Kapcia KJ, Tkachenko V, Capotondi F, Lichtenstein A, Molodtsov S, Piekarz P, Ziaja B.   +6 more
europepmc   +1 more source