Results 71 to 80 of about 3,757 (224)

Robust Active‐Flux Hybrid Observer With an Estimated dq‐Axes BEMF Observer for IPMSM Sensorless Control

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
A robust sensorless control scheme for IPMSMs is developed by combining an active‐flux hybrid observer with an estimated dq‐axes BEMF observer. The added BEMF observer estimates the position error caused by parameter mismatch and enables online angle compensation without signal injection.
Chao Yao, Sheng Huang, Dacheng Ni, Liangxing Jiang   +3 more
wiley   +1 more source

Association between ossification of the posterior longitudinal ligament and ossification of the nuchal ligament in the cervical spine.

PLoS ONE, 2019
ObjectivesTo investigate the association between ossification of the posterior longitudinal ligament (OPLL) and ossification of the nuchal ligament (ONL) in terms of incidence and size.MethodsThis retrospective study evaluated 297 patients who underwent ...
Myung Sub Kim, Hee Jin Park, So Yeon Lee, Ji Na Kim   +3 more
doaj   +1 more source

Ossification of the posterior longitudinal ligament: Etiology, prevalence, progression, and surgical strategies

Indian Spine Journal, 2019
Ossification of the posterior longitudinal ligament (OPLL) is characterized by replacement of the ligamentous tissue by ectopic new bone formation. OPLL often causes narrowing of the spinal canal and has been recognized as a cause of cervical myelopathy ...
Yoshiharu Kawaguchi
doaj   +1 more source

The HLA typing in OPLL families.

Orthopedics & Traumatology, 1988
The HLA typing in ten patients with ossification of the posterior longitudinal ligament (OPLL) in the cervical spine and their families was carried out to elucidate the genetic factor of OPLL onset. The HLA haplotypes were determined by segregation of the HLA phenotypes within a family. The results of the analysis of HLA haplotypes in the OPLL patients
Yamaguchi, Masao, Sakou, Takashi, Uehara, Hirofumi, Kishimoto, Hiroshi   +3 more
openaire   +2 more sources

Nonlinear Modeling and Transient Stability Analysis of SG–PV Infeed Systems

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
The system stability can be judged by comparing the TEF value with the critical energy at the initial state of early fault recovery, no necessary to wait until late fault recovery. This study provides a system‐level physical picture and a fast transient stability criterion for the transient stability analysis of SG‐PV infeed systems.
Qihao Shen, Meng Zhan
wiley   +1 more source

Long-Term Follow-Up of Patients with Neck Pain Associated with Ossification of the Posterior Longitudinal Ligament Treated with Integrative Complementary and Alternative Medicine: A Retrospective Analysis and Questionnaire Survey

Journal of Pain Research, 2022
Jin Namgoong,1 Yun-Ha Lee,1 Ah Ra Ju,1 Jiwon Chai,1 DongJoo Choi,1 Hyo Jung Choi,1 Ji-Yeon Seo,1 Kyoung Sun Park,2 Yoon Jae Lee,1,3 Jinho Lee,2 In-Hyuk Ha1,3 1Bucheon Jaseng Hospital of Korean Medicine, 414 KR in Sangdong, Bucheon-si, Gyeonggi-do ...
Namgoong J, Lee YH, Ju AR, Chai J, Choi D, Choi HJ, Seo JY, Park KS, Lee YJ, Lee J, Ha IH   +10 more
doaj  

“White Cord Syndrome”: A Reperfusion Injury Following Laminectomy and Spinal Decompression Surgery—A Case Report and Literature Review

Case Reports in Medicine, Volume 2026, Issue 1, 2026.
White cord syndrome (WCS) is a rare but serious postoperative complication characterized by new neurological deficits and hyperintense signal changes on T2‐weighted magnetic resonance imaging (MRI) following spinal decompression surgery. Since it was first described by Chin et al.
Iran Chanideh, Amirmohammad Khodaei, Masoud Ghadiri, Zeinab Shakibaee Fard, Mohammad Mehdi Falahi Tabar, Arian Yavari, Sepehr Niktash, Semonti Nandi   +7 more
wiley   +1 more source

Genotypic and allelic distributions of two SNPs between OPLL cases and controls.

, 2014
Genotypic and allelic distributions of two SNPs between OPLL cases and controls.
Xin Lin (149944), Yuan Ren (149908), Hu-cheng Zhao (626470), Bao-ge Liu (626468), Jia-mou Li (626467), Yao Zhang (134381), Lei Song (30203), Jiang Yang (626469), Ya-jie Wang (5660482)   +8 more
core   +1 more source

Correlation Between Facet Tropism and Ossification of the Posterior Longitudinal Ligament in the Cervical Spine

Global Spine Journal
Study Design Retrospective cohort study. Objectives To explore the correlation between Facet Tropism (FT) and OPLL in cervical spine. Methods One-hundred patients with OPLL of cervical spine and one-hundred normal participants without OPLL or cervical ...
Hao Zhou MD, Jianxi Wang MD, Wenyu Zhang MD, Chenfei Gao MD, Bo Hu MD, Genjiang Zhen MD, Xingyu Li MD, Hui Wang MD, Wen Yuan MD, PhD, Huajiang Chen MD, PhD, Lei Liang MD, PhD   +10 more
doaj   +1 more source

DFIG Low‐Voltage Ride‐Through in Weak Grids: Rotor Overcurrent, PLL Effects, and Crowbar Boundaries

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Doubly‐fed induction generator (DFIG) wind turbines can experience severe rotor overcurrent during low‐voltage ride‐through (LVRT) in weak grids because voltage magnitude and angle disturbances interact with converter and phase‐locked‐loop (PLL) dynamics.
Abdullah Alassaf, Ibrahim Alsaleh
wiley   +1 more source