Search

Your search keyword '"Xu, Chun-yan"' showing total 211 results
Start Over Author "Xu, Chun-yan"
211 results on '"Xu, Chun-yan"'

2. Research of Equipment Corrosion in Spent Fuel Reprocessing Plant of Japan and Enlightenment

Author

ZHANG Chun-long, DONG Yong-chang, LYU Dan, SONG Feng-li, CHEN Si-zhe, XU Chun-yan, and LIU Xin-hua

Subjects
spent fuel reprocessing, corrosion resistant material, equipment corrosion, leakage incidents, Nuclear engineering. Atomic power, TK9001-9401, Chemical technology, TP1-1185
Abstract

In severe operating conditions of spent fuel reprocessing plants, such as strong acid and high temperature, equipment corrosion problems are common. The corrosion problems/incidents in Japanese reprocessing plants and some relevant experimental research, evaluation and investigation work carried out by Japanese institutions and scholars were summarized in this paper. The related research results and experience from Japan will provide our country with some reference and technical basis for the design and manufacture, life prediction, preventive maintenance of key equipment, periodic safety evaluation of reprocessing facilities, etc.

Published
2022
Full Text
View/download PDF

4. Effect of High Suspension and Low Incision Surgery Based on Traditional Ligation of Chinese Medicine in Treatment of Mixed Haemorrhoids: A Multi-centre, Randomized, Single-Blind, Non-inferiority Clinical Trial

Author

Jia, Xiao-qiang, Cao, Wei-wei, Quan, Long-fang, Zhao, Wei-bing, Cheng, Fang, Jia, Shan, Feng, Liu-quan, Wei, Xu-feng, Xie, Zhen-nian, Wang, Dong, Xu, Chun-yan, Cui, Chun-hui, Cai, Xing-juan, He, Lan-ye, Wang, Zhan-jun, Tian, Ying, Shi, Shu-min, Sun, Si-miao, Su, Liang, and Zhai, Meng-fan

Published
2021
Full Text
View/download PDF

11. A novel type of facultative and plasminogen independent thrombolytic enzyme from the ancient marine organism, Sipunculus nudus

Author

Ma, Guoxing, primary, tang, mingqing, additional, Xu, Chun-Yan, additional, Yang, Hui, additional, Lin, Hongjun, additional, Bian, Chao, additional, Hu, Chengjia, additional, Lu, Meiling, additional, Chen, Lei, additional, Jie, Wen-cai, additional, Yue, Zhen, additional, Jian, Jianbo, additional, Sun, Yuqing, additional, Zhou, Jingjing, additional, Huang, Yiwen, additional, Li, Zhaofa, additional, Cai, Shuangfeng, additional, Wu, Yaqing, additional, Yang, Kexin, additional, Yan, Hui, additional, Xiong, Yanan, additional, Zhao, Yonggang, additional, Lv, Zhimin, additional, Xu, Xiaoming, additional, Liu, Chuang, additional, Xin, Pengliang, additional, Ye, Lichao, additional, Cuil, Xiuling, additional, Shi, Qiong, additional, Chen, Xi, additional, and XU, Ruian, additional

Published
2023
Full Text
View/download PDF

18. Chromosome-level genome assembly and resequencing of camphor tree (Cinnamomum camphora) provides insight into phylogeny and diversification of terpenoid and triglyceride biosynthesis of Cinnamomum

Author

Wang, Xin-Dong, primary, Xu, Chun-Yan, additional, Zheng, Yong-Jie, additional, Wu, Yan-Fang, additional, Zhang, Yue-Ting, additional, Zhang, Ting, additional, Xiong, Zhen-Yu, additional, Yang, Hai-Kuan, additional, Li, Jiang, additional, Fu, Chao, additional, Qiu, Feng-Ying, additional, Dai, Xiao-Ying, additional, Liu, Xin-Liang, additional, He, Xiao-San, additional, Zhou, Song-Song, additional, Li, Sheng-Xing, additional, Fu, Tao, additional, Xie, Han, additional, Chen, Yan-Ling, additional, Zhang, Qian-Qian, additional, Wang, Hong-Qi, additional, Wang, Yang-Dong, additional, Zhou, Cheng, additional, and Jiang, Xiang-Mei, additional

Published
2022
Full Text
View/download PDF

27. Early Treatment Effect of Chinese Herbal Medicine Formula Huashibaidu Granule on Mild COVID-19 Patients in Fangcang Hospital: An Unblinded, Cluster-Randomized Clinical Trial

Author

Zhao, Chen, primary, Li, Li, additional, Yang, Wei, additional, Lv, Wen-liang, additional, Wang, Jian, additional, Guo, Jing, additional, Dong, Yu, additional, Shi, Nan-nan, additional, Lu, Cheng, additional, Li, Zhi-qiang, additional, Shi, Zhan, additional, Chen, Ren-bo, additional, Huo, Rui-li, additional, Che, Qian-zi, additional, Tian, Ya-xin, additional, Xiang, Xing-hua, additional, Zhou, Jun-hui, additional, Bian, Yong-jun, additional, Chen, Su-ping, additional, Chen, Yang, additional, Chen, Ying-ying, additional, Cong, Xiao-dong, additional, Dong, Guo-ju, additional, Hu, Li-jie, additional, Jiang, Jian-xin, additional, Leng, Lu-xing, additional, Li, Bin, additional, Li, Dong-xu, additional, Li, Hao, additional, Li, Jing, additional, Qi, Wen-sheng, additional, Miao, Qing, additional, Shi, Hua-xin, additional, Shi, Jia-heng, additional, Wang, Bing, additional, Wang, Gang, additional, Wang, Wei, additional, Xian, Yong-yue, additional, Xie, Xiao-lei, additional, Xu, Chun-yan, additional, Xu, Ming, additional, Yan, Bei, additional, Yang, Jin-liang, additional, Zhang, Li, additional, Zhou, Zhen-qi, additional, Zhu, Hao-ning, additional, Xiong, Yi-bai, additional, Liu, Bin, additional, and Huang, Lu-qi, additional

Published
2021
Full Text
View/download PDF

35. Studies on Anti-Depressant Activity of Four Flavonoids Isolated from Apocynum venetum Linn (Apocynaceae) Leaf in Mice

Author

Yan, Shao-Xiao, Lang, Jun-Lian, Song, Yan-Ying, Wu, Yu-Ze, Lv, Meng-Han, Zhao, Xia, Liu, Yan-Hong, and Xu, Chun-Yan

Subjects
Kaempferol, Quercetin, Forced swimming test, Tail suspension test, Locomotor activity test, Neurotransmitters
Abstract

Purpose: To investigate the anti-depressant activity of kaempferol, quercetin, kaempferol-3-O-β-Dglucose and quercetin-3-O-β-D-glucose isolated from Apocynum venetum Linn. (Apocynaceae) leaf and their mechanisms of action.Methods: The four flavonoids were isolated from Apocynum venetum leaf by chromatography. Mice were divided into vehicle, fluoxetine, kaempferol, quercetin, kaempferol-3-O-β-D-glucose and quercetin- 3-O-β-D-glucose groups (n = 10). Forced swimming (FST), tail suspension (TST) and locomotor activity (LAT) tests were used to evaluate the effects of the four flavonoids (0.35 mM/kg) on immobility time, monoamine neurotransmitters, viz, norepinephrine (NE), dopamine (DA) and 5-hydroxytryptamine (5- HT), as well as on the metabolite (5-HIAA) in mice brain and central nervous system (CNS) with the aid of video camera, HPLC-ECD and activity-monitoring system.Results: The four flavonoids significantly (p < 0.05) reduced mice immobility time (72.58 - 90.24; 52.58 - 70.24 s), 5-HIAA levels (940.8 - 1244.7; 880.8 - 1164.1 ng/g) and 5-HIAA/5-HT ratio (1.77 - 4.76; 1.83 - 4.16), but increased NE, DA and 5-HT levels (238.7 - 405.7, 308.4 - 528.1, 261.4 - 531.9; 243.9 - 423.6, 296.7 - 534.9, 279.8 - 481.4 ng/g) in FST and TST, compared with control group (146.18, 126.18 s; 1363.4, 1240.9 ng/g; 7.43, 6.16; 138.4, 235.4, 183.4 and 143.7, 218.6, 201.4 ng/g). The effects of the four flavonoids on the above indices were significant (p < 0.05) and positively related to their polarity. They had no CNS-stimulating effects in LAT.Conclusion: The anti-depressant activities of the four flavonoids are positively related to their polarity, and the mechanisms may be due to increased NE, DA and 5-HT and reduced 5-HT metabolism.Keywords: Kaempferol, Quercetin, Forced swimming test, Tail suspension test, Locomotor activity test, Neurotransmitters

Published
2016

36. A new model for the profiles of optical turbulence outer scale and Cn2 on the coast

Author

Xu Chun-Yan, Wu Xiao-Qing, Cai Jun, Zhan Guo-Wei, Li Xue-Bin, Qing Chun, and Wu Peng-Fei

Subjects
Scale (ratio), Turbulence, General Physics and Astronomy, Wind direction, Atmospheric sciences, 01 natural sciences, Wind speed, law.invention, 010309 optics, Depth sounding, law, Wind shear, 0103 physical sciences, Radiosonde, Environmental science, 010303 astronomy & astrophysics, Scale model, Physics::Atmospheric and Oceanic Physics
Abstract

Atmospheric optical turbulence severely restricts the performances of electro-optical systems. The turbulent atmosphere causes the intensity of a light beam to fluctuate or scintillate, leads the light beam to wander and makes the images randomly displace, which directly relates to the refractive index structure parameter Cn2. Therefore the knowledge of Cn2 is essential to evaluate and to predict the effects of optical turbulence on electro-optical imagery systems. During the period from December 13, 2016 to January 2, 2017, 30 sets of sounding data, which include temperatures, humidities, pressures, wind speeds, wind directions and atmospheric refractive index structure parameters, are obtained by using a self-developed meteorological radiosonde for turbulence at Marine Meteorological Science Experiment Base at Bohe of Maoming. On the basis of the HMNSP99 outer scale model, an atmospheric optical turbulence outer scale formula of Maoming is obtained by fitting the sounding data. At the same time, the experimental data of the turbulence profiles are statistically averaged, and then based on the Hufnagel-Valley model, a statistical model is obtained, which is appropriate to the variation of the turbulence profile on the coast. According to Tatarski turbulence parameterization and the Maoming outer scale formula, the new estimated Cn2 values are compared with their experimental observations and the results from other already defined models, respectively. Statistical analysis shows that the overall correlation coefficients of log10(Cn2) between observed values and estimated values by using the new fitting Maoming outer scale formula, the HMNSP99 model, the Dewan model and the Coulman model are 0.924, 0.848, 0.763 and 0.651, respectively. Also, both the trends and magnitudes for these four outer scale models are consistent with each other. The errors of the above four outer scale models are very small:their overall average absolute errors and average relative errors are 0.514 and 2.963%, 0.627 and 3.612%, 0.943 and 5.439%, 0.766 and 4.417%, respectively, and the error of the Maoming outer scale model is smallest. The reliabilities and validities of the new outer scale and Cn2 models are further verified. In addition, it is found that the occurrence of upper air optical turbulence is closely related to wind shear and temperature gradient. The results support the prediction of the atmospheric optical turbulence profile required for electro-optical engineering on the coast.

Published
2018

41. Perturbation study via rotational-resolved spectrum in the triplet band d 3 Δ− a 3 Π (2, 1) of CO

Author

Li Wei, Wu Ling, Chen Yang-Qin, Yang Xiao-Hua, Xu Chun-Yan, and Guo Ying-Chun

Subjects
Physics, Near-infrared spectroscopy, General Physics and Astronomy, Perturbation (astronomy), Molecule, Atomic physics
Abstract

The triplet band d3Δ−a3Π (2, 1) of the CO molecule in the near infrared region of 12350–12850cm−1 has been observed and analysed by taking into account the perturbation interaction between the d3Δ(v= 2) and a3Π (v= 9) states. The most perturbed lines and most precise perturbation parameters, α2 and β2 and electronic perturbation constants, ξe and ηe, for the d3Δ (v= 2) and a3Π (v= 9) states have been obtained.

Published
2005

46. OCT4B modulates OCT4A expression as ceRNA in tumor cells

Author

LI, DONG, primary, YANG, ZHENG-KAI, additional, BU, JING-YI, additional, XU, CHUN-YAN, additional, SUN, HUI, additional, TANG, JIE-BING, additional, LIN, PING, additional, CHENG, WEN, additional, HUANG, NING, additional, CUI, RONG-JUN, additional, YU, XIAO-GUANG, additional, and ZHENG, XIU-LAN, additional

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results