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Your search keyword '"Yang, Qiankun"' showing total 283 results
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283 results on '"Yang, Qiankun"'

17. Multi-omics analysis reveals a feedback loop amplifying immune responses in acute graft-versus-host disease due to imbalanced gut microbiota and bile acid metabolism

Author

Han, Lijie, Sun, Xianlei, Kong, Jingjing, Li, Jin, Feng, Kai, Bai, Yanliang, Wang, Xianjing, Zhu, Zhenhua, Yang, Fengyuan, Chen, Qingzhou, Zhang, Mengmeng, Yue, Baohong, Wang, Xiaoqian, Fu, Liyan, Chen, Yaoyao, Yang, Qiankun, Wang, Shuya, Xin, Qingxuan, Sun, Nannan, Zhang, Danfeng, Zhou, Yiwei, Gao, Yanxia, Zhao, Junwei, Jiang, Yong, and Guo, Rongqun

Published
2024
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30. Characteristics of thoracic and lumbar mobility in patients with degenerative spinal deformity

Author

LI Kai, YANG Sen, WU Wenjie, YANG Qiankun, and WEI Xiaoyu

Subjects
degenerative spinal deformity, thoracic vertebrae, lumbar vertebrae, range of motion, Medicine (General), R5-920
Abstract

Objective To explore the characteristics of thoracic and lumbar mobility in patients with degenerative spine deformity (DSD). Methods A total of 60 patients with degenerative spine deformity (DSD) admitted in our hospital from May 2018 to May 2021 were recruited in the study, and another 40 healthy individuals who taking physical examination during same period served as control group. The patients including 39 cases of scoliosis convex to the left and 21 cases to the right. A handheld joint actiometer was used to measure thoracic vertebrae left-right lateral flexion, left-right rotation, and lumbar vertebrae flexion and extension, left and right lateral flexion in the deformed group and control group. The parameters, including coronal Cobh angle (CA) and apical vertebra (AV) were measured on the X-ray films of the whole spine in the standing position. The apical vertebra rotation (AVR) was measured on the cross-sectional T2W1 image of MRI. Differences in thoracic and lumbar vertebrae range of motion (ROM) were compared between the 2 groups, and the correlation of thoracic and lumbar vertebrae ROM with AVR and CA angle were analyzed in the deformed group. Results The overall ROM of the lumbar lateral flexion, flexion, extension and the ROM of the thoracic vertebra rotation were significantly smaller than those of the control group (P < 0.01). In the left-sided curved deformities, the lumbar flexion, extension, lateral flexion (concave) and thoracic rotation (concave, convex) were significantly smaller than those in the control group (P < 0.05). In the right-sided curved deformities, the lumbar extension, lumbar flexion (concave, convex), and thoracic rotation (concave, convex) were significantly small than in the control group (P < 0.05). In the deformed group, the lumbar lateral flexion (convex) was significantly negatively correlated with both CA angle (r=-0.282, P=0.035) and AVR (r=-0.343, P=0.010). Conclusion DSD patients have limitations in spinal mobility in all directions. The mobility limitation for lumbar spine mainly focuses on flexion and extension (sagittal plane) and lateral flexion (coronal plane), while mobility limitation for thoracic vertebrae mainly concentrates on rotation. The lateral flexion mobility on the convex side are closely associated with the Cobb angle and AVR.

Published
2022
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33. Modification of Inclusions by Adding Mg to 16MnCrS5 Gear Steel

Author

Liu, Hui, Xie, Yikui, Yang, Qiankun, Zhou, Qi, Ma, Jie, Peng, Zhiwei, editor, Hwang, Jiann-Yang, editor, Downey, Jerome P., editor, Gregurek, Dean, editor, Zhao, Baojun, editor, Yücel, Onuralp, editor, Keskinkilic, Ender, editor, Jiang, Tao, editor, White, Jesse F., editor, and Mahmoud, Morsi Mohamed, editor

Published
2020
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39. Study on vdW Epitaxy Mechanism and Stress Modulation of Large-Size GaN Microwave Material.

Author

LI Chuanhao, LI Zhonghui, PENG Daqing, ZHANG Dongguo, YANG Qiankun, and LUO Weike

Subjects
SAPPHIRES, MICROWAVE materials, METAL organic chemical vapor deposition, GALLIUM nitride, EPITAXY
Abstract

Based on metal organic chemical vapor deposition (MOCVD), growth mechanism and stress modulation of van der Waals (vdW) heteroepitaxial GaN microwave material were studied with few-layer BN as an interlayer on 4-inch sapphire substrates. The influence of AlN nucleate process on growth mechanism of GaN buffer layer and its correlation with crystalline quality, stress, and electrical properties were discussed. A stress modulation scheme based on AlN/ AlGaN composite nucleation process is proposed, achieving stress well in control for large-size vdW heteroepitaxy firstly. The as-grown GaN microwave material possesses a wafer bow of + 20. 4 μm, fullwidth at half maximum of GaN (002) / (102) peaks of 471. 6/933. 5 arcsec, root-mean-square roughness of 0. 52 nm and electron mobility of 2 000 cm² / (V·s). Finally, largesize wafe-scale GaN microwave material was successfully separated from sapphire substrate by a mechanical lift-off process, providing convenience for transfering to high thermal conductivity substrates and creating conditions for fabricating high-power RF devices. [ABSTRACT FROM AUTHOR]

Published
2024

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