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55 results on '"Huo, Feng"'

12. Chinese expert consensus on organ protection of transplantation (2022 edition)

Author

Li, Jian-Hui, primary, Xu, Xiao, additional, Wang, Yan-Feng, additional, Xie, Hai-Yang, additional, Chen, Jing-Yu, additional, Dong, Nian-Guo, additional, Badiwala, Mitesh, additional, Xin, Li-Ming, additional, Ribeiro, Roberto Vanin Pinto, additional, Yin, Hao, additional, Zhang, Hao, additional, Zhang, Jian-Zheng, additional, Huo, Feng, additional, Yang, Jia-Yin, additional, Yang, Hong-Ji, additional, Pan, Hui, additional, Li, Shao-Guang, additional, Qiao, Yin-Biao, additional, Luo, Jia, additional, Li, Hao-Yu, additional, Jia, Jun-Jun, additional, Yu, Hao, additional, Liang, Han, additional, Yang, Si-Jia, additional, Wang, Hao, additional, Liu, Zhong-Yang, additional, Zhang, Li-Cheng, additional, Hu, Xiao-Yi, additional, Wu, Hao, additional, Hu, Yi-Qing, additional, Tang, Pei-Fu, additional, Ye, Qi-Fa, additional, and Zheng, Shu-Sen, additional

Published
2022
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32. Simultaneous Determination of Hexoestrol, Diethylstilbestrol, Estrone and 17-Beta-estradiol in Feed by Gas Chromatography-mass Spectrometry

Author

Huo Feng, Lin Xiao-Li, and Li Ning

Subjects
021110 strategic, defence & security studies, Chromatography, Chemistry, 010401 analytical chemistry, Extraction (chemistry), Relative standard deviation, 0211 other engineering and technologies, Diethylstilbestrol, Ether, Estrone, 02 engineering and technology, Mass spectrometry, 01 natural sciences, 17 beta estradiol, 0104 chemical sciences, chemistry.chemical_compound, medicine, Gas chromatography–mass spectrometry, medicine.drug
Abstract

A method was developed for the simultaneous determination of four kinds of estrogens (hexoestrol, diethylstilbestrol, estrone, and 17-beta-estradiol) in feed by gas chromatography-mass spectrometry (GC-MS). After the sample was extracted by ethyl ether and cleaned-up on HLB phase extraction column, four kinds of estrogens were derived and quantified in gas chromatography-mass spectrometry. The results showed that the linear detectable ranged from 2.5 ng · mL −1 to 250 ng · mL −1 for hexoestrol and from 5 ng · mL −1 to 500 ng · mL −1 for three other estrogens with the correlation coefficients ( R 2 ) were no less than 0.990. The recoveries were in the range of 76.34%–96.33% and the relative standard deviation was no more than 22.7%. The limits of quantitation (LOQ) for all analytics were between 10 ug · kg −1 and 20 ug · kg −1 . The method was accurate and sensitive and could meet the actual requirements for the analyses of feed samples.

Published
2016

33. Corona loss of the bundle conductors on EHV/UHV AC power lines under sandy and dusty conditions in high-altitude areas

Author

Li Yongshuang, Tang Jian, Huo Feng, Chen Sijia, Liu Chen, Huang Shilong, Liu Daran, Liu Yunpeng, and Chen Shaoshuai

Subjects
010302 applied physics, Materials science, Field strength, AC power, Condensed Matter Physics, 01 natural sciences, 010305 fluids & plasmas, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Conductor, Corona (optical phenomenon), Electric power transmission, Altitude, Bundle, 0103 physical sciences, Electrical and Electronic Engineering, Atomic physics, Electrical conductor, Biotechnology
Abstract

Corona loss (CL) of bundle conductors is a key parameter to evaluate the economy and reliability of AC Power lines. In spring and autumn, sandstorms frequently occur in north-west China, the presence of sand particles affects CL characteristics on AC power lines. Based on a UHV corona cage built in Xining, Qinghai Province, China at an altitude of 2200 m, this study experimentally investigated CL of bundle conductors generally used in EHV/UHV power lines under sandy and dusty conditions. Furthermore, changes of CL with sub-conductor radii r, bundle number n, field strength E, dust concentration g, and particle size rd were revealed. It was found that CL quasi-linearly changed with increases in r2, n, and E2, CL non-linearly changed and showed a certain saturated trend with increases in rd and g. In addition, the empirical expression for calculating CL by considering r, n, E, g, and rd was proposed. Finally, CL of typical actual double-circuit UHV AC power lines on the same tower under sandy and dusty conditions in high-altitude areas was evaluated. The research results can provide references for evaluating the economy and conductor selecting on EHV/UHV AC power lines in high-altitude areas where sandy and dusty weather frequently occurs.

Published
2020

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