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您的检索式：作者名="Li Quankun"
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| 1 | Effects of Tightening Torque on Dynamic Characteristics of Low Pressure Rotors Connected by a Spline Coupling显示文摘A rotor dynamic model is built up for investigating the effects of tightening torque on dynamic characteristics of low pressure rotors connected by a spline coupling.The experimental rotor system is established using a fluted disk and a speed sensor which is applied in an actual aero engine for speed measurement.Through simulating calculation and experiments,the effects of tightening torque on the dynamic characteristics of the rotor system connected by a spline coupling including critical speeds,vibration modes and unbalance responses are analyzed.The results show that when increasing the tightening torque,the first two critical speeds and the amplitudes of unbalance response gradually increase in varying degrees while the vibration modes are essentially unchanged.In addition,changing axial and circumferential positions of the mass unbalance can lead to various amplitudes of unbalance response and even the rates of change. | Chen Xi Liao Mingfu Li Quankun | 2017 | Transactions of Nanjing University of Aeronautics and Astronautics2017，34，5： | 2 |
| 2 | Individual blade pitching system for horizontal axis tidal current turbine 显示文摘 | Xu Quankun Li Wei Liu Hongwei | 2013 | Journal of Zhejiang University (Engineering Science)2013，47，3： | 1 |
| 3 | An Electromagnetic Perspective of Artificial Intelligence Neuromorphic Chips显示文摘The emergence of artificial intelligence has represented great potential in solving a wide range of complex problems.However,traditional general-purpose chips based on von Neumann architectures face the“memory wall”problem when applied in artificial intelligence applications.Based on the efficiency of the human brain,many intelligent neuromorphic chips have been proposed to emulate its working mechanism and neuron-synapse structure.With the emergence of spiking-based neuromorphic chips,the computation and energy efficiency of such devices could be enhanced by integrating a variety of features inspired by the biological brain.Aligning with the rapid development of neuromorphic chips,it is of great importance to quickly initiate the investigation of the electromagnetic interference and signal integrity issues related to neuromorphic chips for both CMOS-based and memristor-based artificial intelligence integrated circuits.Here,this paper provides a review of neuromorphic circuit design and algorithms in terms of electromagnetic issues and opportunities with a focus on signal integrity issues,modeling,and optimization.Moreover,the heterogeneous structures of neuromorphic circuits and other circuits,such as memory arrays and sensors using different integration technologies,are also reviewed,and locations where signal integrity might be compromised are discussed.Finally,we provide future trends in electromagnetic interference and signal integrity and outline prospects for upcoming neuromorphic devices. | Er-Ping Li Hanzhi Ma Manareldeen Ahmed Tuomin Tao Zheming Gu Mufeng Chen Quankun Chen Da Li Wenchao Chen | 2023 | Electromagnetic Science2023，1，3： | 0 |
| 4 | Protective effect of 4-methyl-2-{[4-(toluene-4-sulfonyl)-thiomorpholine-3-carbonyl]-amino}-pentanoic acid isopropyl ester against cerebral ischemia显示文摘To investigate the effects of 4-methyl-2-{[4-(toluene-4-sulfonyl)-thiomorpholine-3-carbonyl]-amino}-pentanoic acid isopropyl ester(HD5-6)against cerebral ischemia in rodents,the models with global and focal ischemia were induced by bilateral common carotid artery occlusion plus hypotension(BCAOH)and permanent cerebral artery occlusion(p-MCAO)in mice(n=10–12 per group in BCAOH;n=8 per group in p-MCAO)and rats(n=10-11 in each group).HD5-6 prolonged lifetime and improved neurological function.Neurological deficits score in HD5-6(30 mg/kg)decreased significantly.Malonaldehyde(MDA)in HD5-6-treated mice with ischemia considerably dropped.The infarction volume of the HD5-6-treated rats with MCAO-induced ischemia decreased significantly in the high dose group(P<0.05,i.g.and P<0.01,i.v.).Immunohistochemistry showed that Brain derived neurotrophic factor(BDNF)in the ipsilateral hemisphere increased and Vascular endothelial growth factor(VEGF)decreased with HD5-6 treatment.HD5-6 has protective effects against experimental cerebral ischemia in rodents and the action mechanism may involve anti-oxidation and neurogenesis. | Tinghui Zhang Yihan Wang Xin Li Jinwei Dai Quankun Zhuang Xirui Song Junhai Xiao Lili Wang Yuyang Zhang | 2021 | Asian Journal of Traditional Medicines2021，16，3： | 0 |
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