IMPEDANCE

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Effect of impedance boundary-controlled casing treatment on performance of a fan subjected to inlet swirls
《Chinese Journal of Aeronautics》2025年第2期1-14,共14页Yuqing WANG Dakun SUN Jia LI Chunwang GENG Xu DONG Xiaofeng SUN 
supported by the National Natural Science Foundation of China(Nos.52306035 and 52325602);the Science Center for Gas Turbine Project,China(Nos.P2022-A-II-002-001 and P2022-C-II-003-001);the National Science and Technology Major Project,China(Nos.Y2022-II-0002-0005 and Y2022-II-0003-0006);the Key Laboratory of Pre-Research Management Centre,China(No.6142702200101)。
An experimental investigation is conducted to evaluate the performance and the stalling process of a fan subjected to inlet swirls,as well as the effectiveness of an Impedance Boundary-Controlled(IBC)Casing Treatment(...
关键词：Axial fan/compressor Swirl inlet distortion Casing treatment Flow stability Unsteady flow 
Stability Improvement Method for Multi-Converter Distribution Systems Based on Impedance Sensitivity
《CSEE Journal of Power and Energy Systems》2025年第1期318-328,共11页Yang Li Zhikang Shuai Junbin Fang Xiangyang Wu 
supported in part by National Natural Science Foundation of China under Grant 52125705;in part by the China Postdoctoral Science Foundation under Grant 2021M701137.
This paper uses impedance sensitivity to identify the parameters that have dominant influences on the stability of multi-converter systems, which can then efficiently improve system stability. A modified 400 V IEEE 13...
关键词：CONVERTER impedance sensitivity small-signal model stability analysis stability improvement. 
Universal Modeling Method of Electrical Impedance Response During Respiration
《Journal of Shanghai Jiaotong university(Science)》2024年第6期967-978,共12页LIU Enkang MA Yixin BAI Zixuan ZHOU Xing ZHANG Mingzhu JIANG Zeyi 
the Interdisciplinary Program of Shanghai Jiao Tong University(No.YG2021QN37)。
In recent years,significant progress has been made through impedance pneumography(IP)in diagnosing pulmonary function.Since there is no need to measure inhalation and exhalation air flow through a pipeline,IP does not...
关键词：impedance pneumography pulmonary function test multiple regression 
Anisotropic impedance holographic metasurface for near-field imaging
《Photonics Research》2024年第10期2226-2234,共9页XIANGSHUAI MENG HAOYU ZHANG TAO WU YU LI ANXUE ZHANG LEI RAN XIAOMING CHEN 
National Natural Science Foundation of China(62101426,62301417);China Postdoctoral Science Foundation(2020M683482);Foundation of National Key Laboratory of Radar Signal Processing(JKW202306)。
In this paper,the concept of anisotropic impedance holographic metasurface is proposed and validated by realizing holographic imaging with multipoint focusing techniques in near-field areas at the radio frequency doma...
关键词：SURFACE HOLOGRAPHIC IMPEDANCE 
Preparation and characterization of Ti-Zr-V-Cu getter films
《Radiation Detection Technology and Methods》2024年第2期1298-1305,共8页Yuchen Yang Tao Huang Na Wang Jia’ou Wang Saike Tian Sen Yue Haichang Duan Yongsheng Ma Yu Liu Jun Ren Xiaohua Peng Haiyi Dong Ping He 
supported by High Energy Photon Source(HEPS),a major national science and technology infrastructure,and Xie Jialin Research Fund(No.E2546HU210);National Development and Reform Commission(2017)No.2173。
Introduction Non-evaporable getter is now widely employed in many accelerators to mitigate the resistive-wall effect of the Ti-Zr-V getter coated vacuum chambers in the next generation accelerators.Methods and discuss...
关键词：GETTER NEG TiZrVCu IMPEDANCE CONDUCTIVITY SRPES Pumping speed 
A low-profile metamaterial absorber with ultrawideband reflectionless and wide-angular stability
《Defence Technology（防务技术）》2024年第4期258-268,共11页Feihong Lin Zhongming Yan Ping Wang Yu Wang Hongcheng Zhou Haoran Lu 
An ultrawideband reflectionless metamaterial absorber(MA)is proposed by replacing the metallic ground with the complementary split-ring resonator(CSRR)structure.The proposed MA exhibits-10 d B reflectivity spectrum fr...
关键词：Metamaterial absorber(MA) Magnetic material(MM) High-impedance surface(HIS) Scattering cancellation technology ULTRAWIDEBAND Wide-angular stable 
Novel method for identifying the stages of discharge underwater based on impedance change characteristic
《Plasma Science and Technology》2024年第4期133-145,共13页高崇 康忠健 龚大建 张扬 王玉芳 孙一鸣 
provided by the shale gas resource evaluation methods and exploration technology research project of the National Science and Technology Major Project of China(No.2016ZX05034);Graduate Innovative Engineering Funding Project of China University of Petroleum(East China)(No.YCX2021109)。
It is difficult to determine the discharge stages in a fixed time of repetitive discharge underwater due to the arc formation process being susceptible to external environmental influences. This paper proposes a novel...
关键词：discharge underwater discharge stage identification impedance characteristics strong tracking filter 
Ambiently fostering solid electrolyte interphase for low-temperature lithium metal batteries被引量：3
《Journal of Energy Chemistry》2023年第12期473-478,I0012,共7页Jia-Yue Duan Jin-Xiu Chen Fang-Fang Wang Jin-Hao Zhang Xiao-Zhong Fan Liping Wang Yingze Song Wei Xia Yusheng Zhao Long Kong 
supported by the National Natural Science Foundation of China (22379121);Shenzhen Foundation Research Fund granted by the Shenzhen Science and Technology Innovation Committee (JCYJ20220530112812028);Fundamental Research Funds for the Central Universities (G2022KY0606);Zhejiang Province Key Laboratory of Flexible Electronics Open Fund (No. 2023FE005)。
Despite being a leading candidate to meet stringent energy targets,lithium(Li) metal batteries(LMBs)face severe challenges at low temperatures such as dramatic increase in impedance,capacity loss and dendrite growth.U...
关键词：Li matel batteries Ambiently fostering SEI Charge transfer impedance Low temperature kinetics 
On the improvement of power conversion efficiency of parametric arrays
《Chinese Journal of Acoustics》2023年第4期450-463,共14页LU Zhimiao MENG Jin WANG Bo ZHAO Zhihua HU Anqi 
Due to the low power conversion efficiency of parametric array, the proposed method can be used to improve the power conversion efficiencies of parametric arrays by adjusting the specific acoustic impedance. The Kuzne...
关键词：PARAMETRIC IMPEDANCE METHOD 
Vibration Isolation Characteristics of Impedance-balanced Ship Equipment Foundation under Unbalanced Excitation
《Sustainable Marine Structures》2023年第1期37-47,共11页Yuxuan Qin Yinbing Wang Fuzhen Pang Zhiqi Fu Haichao Li 
funded by the National Natural Science Foundation of China(Grant Numbers.U2006229 and 52101351)。
A new type of impedance-balanced ship equipment foundation structure based on the principle of impedance balancing using a“discontinuous panel-vibration isolation liquid layer-foundation structure”is proposed to sol...
关键词：Ship equipment foundation Impedance-balanced design Vibration isolation and reduction methods 
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