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A Position Detection Method for Dynamic Wireless Inspection Robots Charging
Xue Ming,Yang Qingxin,Zhu Gaojia,Li Longnv 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.1
The paper proposes a new structure of the receiving coil, which features horizontal and vertical position detection of inspection robot, which eliminates the system dependence on complex detection control circuit and simplifi es the circuit design of the receiving end. The proposed design obtains the position information by comparing the induced voltage diff erence of the four-coil sets. Besides, the receiving coil is optimized in terms of the shape, dimension and the magnetic shielding structure by fi nite element analysis. Finally, the eff ectiveness of the receiving coil position detection is verifi ed by the experiment with misalignment disturbance. The results illustrate the eff ectiveness of the four-coil system to detect the load position and the position adjustment by the adjustment control system
Ke-Ming Wang,Feng Chen,Hui Hu,Hui-Hao Xia,Xue-Lin Wang,Bo-Rong Shi,Qing-Ming Lu 한국진공학회(ASCT) 2003 Applied Science and Convergence Technology Vol.12 No.S1
Both LiNbO₃ and KTiOPO₄ samples were implanted with 350 keV H^+ and He^+ ions at different doses ranging from 1×10^(16) to of 5×10^(16) ions/㎠. Single and multi-energy implantations were performed at room temperature. Mono-mode or a few modes in both LiNbO₃ and KTiOPO₄ waveguides were observed. The effect of temperature on the refractive index profiles of LiNbO₃ and KTiOPO₄ waveguids was studied. The temperature covered from room temperature, 200℃, 194.5 K (dry ice) and 77K (liquid nitrogen). Different mechanisms are needed to interpret the observed behavior. A n_e increased mono-mode LiNbO₃ waveguide was formed by multi-energy keV He^+ ions.
Yan-Ming Mu,Xue-Ming He,Zongde Fang 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.22 No.12
To improve the dynamic performance of spiral bevel gear transmission, an ease-off flank modification method of the high-contact-ratio spiral bevel gear is proposed. First, the high-contact-ratio spiral bevel gear is designed by increasing the angle between the contact path and the pitch cone of a pinion tooth surface with ease-off technology. Second, the meshing performance of the high-contact-ratio spiral bevel gear designed utilizing ease-off technology is compared with the HCR spiral level gear designed by the local synthesis method. Finally, the loaded transmission error (the main vibration excitation of the gear transmission in the low-speed range), the meshing impact (the main vibration excitation of the gear transmission in the high-speed range) and the dynamic performance of the high-contact-ratio spiral bevel gear are compared with that of a low-contact-ratio spiral bevel gear. A simulation analysis based on the ease-off technology shows that the design contact ratio of the spiral bevel gear can be improved by increasing the angle between the contact path and the pitch cone of the pinion tooth surface; compared with the local synthesis method, the high-contact-ratio spiral bevel gear transmission designed by the ease-off flank modification method has a better meshing performance; increasing the design contact ratio can effectively reduce the loaded transmission error, and meshing impact, and obtain a spiral bevel gear transmission with good dynamic performance over the whole speed range.
Ding-Ming Xue,Shi-Chao Qi,Xin Liu,Yu-Xia Li,Xiao-Qin Liu,Lin-Bing Sun 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-
N-doped porous carbon-based materials (NPCMs) with hierarchical pore structures have beenconsidered to be a suitable alternative to meet the ever-increasing demands for supercapacitors;however, the universally low yield of the NPCMs has restricted their practical applications. Herein, aseries of NPCMs with hierarchical pore structures are synthesized with significantly increased yieldsthrough the carbonization of the copolymer made from 2,4,6-tris(chloromethyl)mesitylene and pphenylenediamine. The development of the hierarchical pore structures and the N content of the NPCMsshow opposite dependences on the increasing carbonization temperature. The NPCM exhibits the bestcapacitive ability only if the sufficiently developed hierarchical structures and moderate N content areachieved simultaneously. Therefore, NPCM-600 that is carbonized at 600 C with an excellent yield of53.6% (wt.), large specific surface area of 1778 m2 g 1, and N content of 4.13% (wt.) yields an ideal specificcapacitance of 298 F g 1 at the current density of 1 A g 1 and a perfect cycling stability of the capacitanceafter 10,000 cycles at 10 A g 1. The yield of the NPCM-600 is considerably higher than those for manyother recently reported NPCMs. NPCM-600 also shows better capacitance than those of the otherreported NPCMs, such as NOPC-bis-CN-3 (167 F g 1) and CHCPB-K-600 (260 F g 1).
이명학 ( Ming Xue Li ) 단국대학교 법학연구소 2013 법학논총 Vol.37 No.1
本文通過魯迅的文學活動考察魯迅的法律思想。關于魯迅法律文化思想的硏究一直沒有得到學術界的關注, 涉及此嶺域的硏究論述부是局部的探討. 本文作爲分析魯迅法律文化思想的嘗試, 主要從三個方面探究魯迅法律文化思想的內涵和重大的啓示意義. 第一部分探討了魯迅法律文化思想的基石. 第二部分是分析魯迅法律文化思想的構成要素. ?反對封建法律與制度、追求革命的民主主義法律制度、第三部分是通過作品分析魯迅對民國法律文化的透徹認識和法制意識及實踐.
Roles of NMDA NR2B Subtype Receptor in Prefrontal Long-Term Potentiation and Contextual Fear Memory
Zhao, Ming-Gao,Toyoda, Hiroki,Lee, Yong-Seok,Wu, Long-Jun,Ko, Shanelle W.,Zhang, Xue-Han,Jia, Yongheng,Shum, Fanny,Xu, Hui,Li, Bao-Ming,Kaang, Bong-Kiun,Zhuo, Min Elsevier 2005 Neuron Vol.47 No.6
<P><B>Summary</B></P><P>Cortical plasticity is thought to be important for the establishment, consolidation, and retrieval of permanent memory. Hippocampal long-term potentiation (LTP), a cellular mechanism of learning and memory, requires the activation of glutamate N-methyl-D-aspartate (NMDA) receptors. In particular, it has been suggested that NR2A-containing NMDA receptors are involved in LTP induction, whereas NR2B-containing receptors are involved in LTD induction in the hippocampus. However, LTP in the prefrontal cortex is less well characterized than in the hippocampus. Here we report that the activation of the NR2B and NR2A subunits of the NMDA receptor is critical for the induction of cingulate LTP, regardless of the induction protocol. Furthermore, pharmacological or genetic blockade of the NR2B subunit in the cingulate cortex impaired the formation of early contextual fear memory. Our results demonstrate that the NR2B subunit of the NMDA receptor in the prefrontal cortex is critically involved in both LTP and contextual memory.</P>
Yan-Ming Mu,Xiang-ying Hou,Si-wei Yang,Xue-Ming He 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.5
For upgrading the transmission performance of spiral bevel gear and extending the time between overhauls of the helicopter reducer, an innovative multi-objective collaborative optimization strategy of shape and performance is put up for the super-high-contact-ratio spiral bevel gear transmission with the contact path along tooth width based on ease-off. Firstly, according to the preset contact path curve along tooth width and the symmetrical transmission error curve, the pinion optimal surface satisfying the preset functions is obtained based on ease-off. Secondly, based on the basic principles of simulated annealing and gravitational search, the simulated annealing-gravity search cooperative intelligent optimization algorithm is set up for the calculation of the multi-objective collaborative optimization model of the spiral bevel gear transmission, and the modified surface of pinion satisfying the function requirements is obtained based on the collaborative optimization of shape and performance. Finally, combined with the tooth contact analysis method, meshing impact analysis method and dynamic analysis method, the loaded transmission error, meshing impact and dynamic performance of the super-high-contact-ratio spiral bevel gear transmissions are discussed. The simulation result shows the contact path of the collaborative designed spiral bevel gear transmission is along the tooth width, and the contact ratio reaches the maximum. The loaded transmission error, meshing impact, dynamic load factor and root mean square of vibration acceleration of the collaborative design spiral bevel gear transmission are all smaller than the original design and optimized design spiral bevel gear transmissions. The feasibility of the innovative multi-objective collaborative optimization strategy of shape and performance for the spiral bevel gear is verified, and the super-high-contact-ratio design can greatly cut down the contact vibration of the spiral bevel gear transmissions and better the helicopter’s performance.