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J. Cent. South Univ. (2012) 19: 2674-2680 DOI: 10.1007/s11771-012-1326-5 Influence of explosion parameters on wavelet packet frequency band energy distribution of blast vibration ZHONG Guo... of millisecond detonator). The results show that more than 95% frequency band energy of the signals s1-s8 concentrates at 0-200 Hz and the main vibration frequency bands of the signals s1-s8 are 70.313-125......
Infrared-to-Visible Frequency up-Conversion in Trivalent Erbium Ions Doped Fluoride Glasses (ZnF2-AlF3-PbF2-LiF) 刘晃清1,黄世华1,赵丹1,吴长峰1,秦伟平1,秦冠仕1 (1.Changchun Institute of Optics, Fine Mechanics and Physics, Key Laboratory of Excited States Processes, Chinese Academy of Sciences, Changchun 130022, China) Abstract:High-efficiency frequency up-conversion in trivalent erbium ion doped new fluoride......
Mathematical model of electromagnetic elimination in tubule with high frequency magnetic field GUO Qing-tao(郭庆涛), JIN Jun-ze(金俊泽), LI Ting-ju(李廷举), WANG Tong-min((王同敏), ZHANG Qi(张 琦), CAO Zhi... 10 April 2006; accepted 25 April 2006 Abstract: In order to find the ways to improve the elimination efficiency with high frequency magnetic field, a mathematical model of electromagnetic elimination......
Effect of Sm-doping on the morphology and magnetic properties of radio frequency magnetron sputtered Ni-Mn-Ga filmsFeng-hua Chen, Min-gang Zhang, Yue-sheng Chai, and Chang-wei Gong College... by radio frequency (RF) magnetron sputtering. The effect of Sm do-pant on the morphologic and magnetic properties of Ni55.5Mn21Ga23.5 films was investigated. Sm doping can refine the particle size......
Low Frequency Electromagnetic Casting of 2195 Aluminum-Lithium Alloy and Its Effects on Microstructure and Mechanical PropertiesFu-Yue Wang,Xiang-Jie Wang,Wei Sun,Fang Yu,Jian-Zhong CuiKey Lab of Electromagnetic Processing of Materials,Ministry of Education , Northeastern University摘 要:In this study,the low frequency electromagnetic casting(LFEC......
Mechanism of Residual Stress Reduction in Low Alloy Steel by a Low Frequency Alternating Magnetic TreatmentYanli Song and Lin Hua School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China摘 要:Residual stress reduction in low alloy steel by a low frequency alternating magnetic treatment and its mechanism were......
J. Cent. South Univ. (2018) 25: 2150-2163 DOI: https://doi.org/10.1007/s11771-018-3904-7 Power-line interference suppression of MT data based on frequency domain sparse decomposition TANG Jing-tian... distortion at the fundamental frequency and its odd harmonics, and may also affect other frequency bands. Although trap circuits are designed to suppress such noise in most of the modern acquisition devices......
Piezoelectric Properties and Stability of Resonant Frequency of Cr Modified PSZN-PZT Ceramics Nie Qiang1,Sun Qingchi2,Wang Lifeng2 (1.School of Chemical Engineering and Technology, Tianjin... coefficient of resonant frequency of( Pb0. 97Pr0. 03 ) [ ( Zn1/3 Nb2/3 )0.06 ( Sn1/3 Nb2/3 )0.06 ( Zr0. 43 Ti0.45 )0. 88] O3 + 0.5wt% MnO2 ceramics were investigated as a function of Cr dopant content. X-ray......
J. Cent. South Univ. (2018) 25: 241-250 DOI: https://doi.org/10.1007/s11771-018-3733-8 Theoretical analysis of adaptive harmonic window and its application in frequency extraction of vibration... of this paper is to find an excellent adaptive window function for extracting the weak vibration signal and high frequency vibration signal under strong noise. The relationship between windowing transform......
Energy transfer and frequency upconversion in Er3+-Yb3+ codoped oxy-fluoro-tungstosilicate glasses揭光涛,赵高凌,汪建勋,韩高荣State Key Lab of Silicon Material and Department of Materials Science and Engineering,Zhejiang University摘 要:Er3+-Yb3+ codoped oxy-fluoro-tungstosilicate glasses with infrared-to-visible frequency upconversion luminescence were prepared......
