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Ding P, Li JY, Ye XL, Yin XH, Qian DN, Zhong CZ, Shi HY. [Independent and joint effect of chronotype and sleep duration on self-rated health in medical students]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1796-1803. [PMID: 36444465 DOI: 10.3760/cma.j.cn112338-20220426-00349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Objective: To investigate the independent and joint effects of chronotype and sleep duration on self-rated health in medical students. Methods: A cross-sectional study was conducted in 1 526 medical students selected through proportional stratified cluster random sampling from a medical university in Zhejiang province. A questionnaire survey was conducted to collect the information about their basic demographic characteristics, chronotype, sleep duration, and other lifestyle factors such as midnight snack, sedentary behavior, physical activity, meal time, and self-rated health. The independent and joint effects of chronotype and sleep duration on self-rated health were assessed by logistic regression model after controlling for confounding variables. Results: The numbers of the students with evening chronotype, neutral chronotype, and morning chronotype were 664 (43.5%), 442 (29.0%), and 420 (27.5%), respectively. Among the medical students, 42.8% (653) had poor self-rated health. Compared with those with the morning chronotype, the adjusted ORs for those with neutral chronotype and evening chronotype were 1.69 (95%CI: 1.23-2.31) and 2.43 (95%CI: 1.81-3.26), respectively, trend test P<0.001. Compared with those with sleep duration of 8 h or above per night, the adjusted ORs for those with sleep duration of 7 and ≤6 h per night were 1.40 (95%CI: 1.07-1.84) and 2.38 (95%CI: 1.69-3.37), respectively, trend test P<0.001. In the joint effect, compared with those with the morning chronotype and sleep duration of 8 h or above per night, the adjusted OR for those with evening chronotype and sleep duration of ≤6 h per night was 6.53 (95%CI: 3.53-12.09). Conclusions: Both evening chronotype and insufficient sleep were associated with increased odds of poor self-rated health in medical students, and they had joint effects. Therefore, it is necessary to promote early to bed, early to rise and adequate sleep in medical student to maintain their health.
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Affiliation(s)
- P Ding
- Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - J Y Li
- Renji College, Wenzhou Medical University, Wenzhou 325035, China
| | - X L Ye
- Publicity Department, Wenzhou Medical University, Wenzhou 325035, China
| | - X H Yin
- Renji College, Wenzhou Medical University, Wenzhou 325035, China
| | - D N Qian
- Renji College, Wenzhou Medical University, Wenzhou 325035, China
| | - C Z Zhong
- Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - H Y Shi
- Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
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He L, Zhang HM, Lyu B, Shen YC, Li CY, Yang WC, Fu J, Du XW, Wang FD, Wang QP, Yin XH, Wan SK, Bin B, Li YC, Dai SY, Liu B. Development and preliminary test of a space-resolved vacuum-ultraviolet spectroscopy in EAST. Rev Sci Instrum 2021; 92:043519. [PMID: 34243364 DOI: 10.1063/5.0040643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/17/2021] [Indexed: 06/13/2023]
Abstract
The impurity radiation from the divertor region of the EAST tokamak is dominantly in the wavelength range of vacuum ultraviolet (VUV) due to the elevated edge electron temperature. A space-resolved VUV spectroscopy is developed to measure impurity radiation in the divertor region. An eagle-type VUV spectrometer with a focal length of 1 m is adopted in this system, equipped with a spherical grating and a charged-coupled device (CCD) detector. The performance of the VUV spectrometer is preliminarily tested on a synchrotron radiation facility. The wavelength calibration is conducted near 65 nm. It is found that the wavelength range observed by the CCD detector is about 11.07 nm around the central wavelength of about 65 nm. With a linear dispersion of 0.0053 nm/pixel, it is possible to measure the ion temperature lower than 20 eV at the edge region by analyzing the Doppler broadening of a carbon line. These test results show that the performance of the VUV spectrometer is capable of measuring divertor radiation and analyzing the ion temperature of edge impurity ions.
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Affiliation(s)
- L He
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - H M Zhang
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - B Lyu
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Y C Shen
- Hefei Normal University, Hefei 230601, China
| | - C Y Li
- Anhui Spectreation Instrument Co. Ltd., Hefei 230088, China
| | - W C Yang
- Anhui Spectreation Instrument Co. Ltd., Hefei 230088, China
| | - J Fu
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - X W Du
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - F D Wang
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Q P Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - X H Yin
- School of Electrical Engineering, University of South China, Hengyang 420001, China
| | - S K Wan
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - B Bin
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Y C Li
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - S Y Dai
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - B Liu
- Southwestern Jiaotong University, Chengdu 610031, China
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Zhu YW, Yang WC, Liu W, Yin XH, Luo XB, Zhang SA, Wang WC, Yang L. Effects of dietary rapeseed meal inclusion levels on growth performance, organ weight, and serum biochemical parameters in Cherry Valley ducks. Poult Sci 2020; 98:6888-6896. [PMID: 31347686 PMCID: PMC8913998 DOI: 10.3382/ps/pez419] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 07/12/2019] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to investigate the effects of the inclusion levels of different types of rapeseed meal (RSM) on performance, organ weight, and serum biochemical parameters in Cherry Valley ducks in the starter period and grower-finisher period. In Exp. 1, a total of 750 seven-day-old male ducklings were divided into 5 dietary treatments with 6 replicate pens of 25 birds per pen. The starter diets with the inclusion of 0, 5, 10, 15, or 20% of double-low RSM contained 0, 1.37, 2.15, 3.46, or 5.31 µmol glucosinolates (GLS)/g in the finished feed (from day 7 to 21). In Exp. 2, a total of 900 fifteen-day-old male ducklings were divided into 6 dietary treatments with 6 replicate pens of 25 birds per pen. The grower-finisher diets with the inclusion of 0, 5, 10, 15, 20, or 25% of Indian RSM contained 0, 7.67, 15.34, 24.66, 31.21, or 38.44 µmol GLS/g in the finished feed (from day 15 to 42). For ducklings in the starter period (Exp. 1), body weight gain and feed intake decreased linearly as the dietary double-low RSM inclusion level increased at day 7 to 14, while growth rate was not influenced by dietary double-low RSM inclusion levels at day 15 to 21 and day 7 to 21. For ducks in the grower-finisher period (Exp. 2), growth performance decreased linearly as the dietary RSM inclusion level increased from 5 to 20%. In addition, dietary RSM inclusion levels induced liver enlargement in ducklings at day 21 (5 to 20% double-low RSM with 1.37 to 5.31 µmol/g GLS) and thyroid enlargement accompanied by increased serum AST and ALP activities in ducks at day 42 (5 to 15% Indian RSM with 7.67 to 23.66 µmol/g GLS). Therefore, our results indicated that the upper limit of using RSM sources in feed formulation should consider the anti-nutritional factor of GLS content at different stages of duck growth.
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Affiliation(s)
- Y W Zhu
- Guangdong Provincial Key Laboratory of Animal Nutrition and Regulation, College of Animal Science, South China Agricultural University, Guangzhou 510000, China
| | - W C Yang
- Aonong Biological Technology Group Co. Ltd., Xiamen 361000, China
| | - W Liu
- Wens Foodstuff Group Co. Ltd., Yunfu 527300, China
| | - X H Yin
- Animal husbandry and veterinary bureau of Liangshan, Jining 272000, China
| | - X B Luo
- Wens Foodstuff Group Co. Ltd., Yunfu 527300, China
| | - S A Zhang
- Wens Foodstuff Group Co. Ltd., Yunfu 527300, China
| | - W C Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition and Regulation, College of Animal Science, South China Agricultural University, Guangzhou 510000, China
| | - L Yang
- Guangdong Provincial Key Laboratory of Animal Nutrition and Regulation, College of Animal Science, South China Agricultural University, Guangzhou 510000, China
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Wang B, Yin XH, Peng D, Lv RH, Na B, Liu HS, Gu XB, Wu W, Zhou JL, Zhang Y. Achieving thermally conductive low loss PVDF-based dielectric composites via surface functionalization and orientation of SiC nanowires. EXPRESS POLYM LETT 2020. [DOI: 10.3144/expresspolymlett.2020.2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Yang L, Li W, Yin XH, Wang JY. [External jugular vein grafting to reconstruct the continuity of common carotid-internal carotid artery: one case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 53:625-627. [PMID: 30122004 DOI: 10.3760/cma.j.issn.1673-0860.2018.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- L Yang
- Department of Otorhinolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W Li
- Department of Otorhinolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X H Yin
- Department of Otorhinolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China; Department of Ophthalmology and Otorhinolaryngology, Xichang Renming Hospital, Xichang 615000 China
| | - J Y Wang
- Department of Otorhinolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China; Department of Otorhinolaryngology Head and Neck Surgery, Ningbo Hospital of Traditional Chinese Medicine, Ningbo 315000, China
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Yin XH, Ju L, Wu W, Xiao Y, Ying SB, Zhang M, Lou JL, Jia ZY, Xia HL, Zhu LJ, Zhang X. [Changes of microRNAs profiling in mesothelial cells exposed to multi-walled carbon nanotubes]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 34:531-534. [PMID: 27682492 DOI: 10.3760/cma.j.issn.1001-9391.2016.07.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the cytotoxicities of MWCNT to the mesothelial cells and screen the changes of microRNA profile after exposure to MWCNT. Methods: A LDH method was used to test the cytotoxicities of MWCNT to MeT-5A cell lines. And then the differentially expressed miRNAs between mesothelioma cells and normal mesothelial cells were selected from previous work of research group. Among the significant expression changed miRNAs, 5 were verified by RT-qPCR in mesothelioma cells. The same five ones were further tested in MeT-5A cells exposed to 10 μg/cm2 MWCNT for 8, 24, 48, 72 h by RT-qPCR. Target genes of 5 miRNAs were predicted using Targetscan and miRanda softwares. David6.7 was used to perform GO enrichment and KEGG pathway analysis of target genes. All the data were analyzed by one-way ANOVA and Dunnett-T test in SPSS17.0. Results: After 24 h exposure to MWCNT, cell proliferation was significantly suppressed at more than 20 μg/cm2 concentration. Among the differentially expressed miRNAs, 5 were chosen to further vestified, namely hsa-miR-155 (up-regulated) , hsa-miR-30 d-5p, hsa-miR-34c-5p, hsa-miR-28-5p and hsa-miR-324-5p (down-regulated) , which were consistent with the miRNA array results. The 5 miRNAs also had the same expression changes in MeT-5A cells after exposure to 10 μg/cm2 MWCNT for different time periods. The potential target genes of the 5 miRNAs may be AKAP13, CCND3, Twist and E-Cadherin, which mainly involved in TGF-β signal pathway, small cell lung cancer, etc. Conclusion: MWCNT could induce to MeT-5A cells, and also cause miRNA expression changes. The differential changed miRNAs may involve in cancer related signal pathways.
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Affiliation(s)
- X H Yin
- Institute of occupational diseases prevention and control, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, 310013, China
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Li JW, Yin XH, Luan QX. [Comparative study of proliferative and periodontal differentiation propensity of induced pluripotent stem cells at different passages]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:16-24. [PMID: 28202998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To compare the proliferative and periodontal specific differentiation abilities of induced pluripotent stem cells (iPSCs) at different passages, and to investigate whether long term culturing would have a negative influence on their proliferation and specific differentiation capacity, thus providing a theoretical basis for further in-depth research on periodontal regeneration and the possible clinical applications of iPSCs. METHODS IPSCs derived from human gingival fibroblasts at passages 5, 10, 15 and 20 were recovered and cultured in vitro. Their morphology and proliferation rates were observed respectively. We further induced the iPSCs at different passages toward periodontal tissue under the treatment of growth/differentiation factor-5 (GDF-5) for 14 days through the EB routine, then compared the periodontal differentiation propensities between the different passages of iPSCs by detecting their calcified nodules formation by Alizarin red staining and assaying their relative periodontal tissue related marker expressions by qRT-PCR and immunofluorescence staining, including bone related markers: osteocalcin (OCN), bone sialoprotein (BSP); periodontal ligament related markers: periostin, vimentin; and cementum related markers: cementum attachment protein (CAP), cementum protein 1 (CEMP1). The untreated spontaneous differentiation groups were set as negative controls respectively. RESULTS iPSCs at different passages all showed a high proliferative capacity when cultured in vitro and turned into a spindle-like shape similar to fibroblasts upon periodontal specific differentiation. All iPSCs formed typical calcified nodules upon GDF-5 induction by Alizarin red staining in comparison to their untreated controls. The relative calcium deposition at all passages had been significantly upgraded under the treatment of GDF-5 (P5: t=2.125, P=0.003; P10: t=2.246, P=0.021; P15: t=3.754, P=0.004; P20: t=3.933, P=0.002), but no significant difference in their calcium deposition were detected within passages 5, 10, 15 and 20 (periodontal differentiation: F=2.365, P=0.109; spontaneously differentiation: F=2.901, P=0.067). Periodontal tissue related marker expressions of iPSCs at all passages had also been significantly upgraded under the treatment of GDF-5 (P<0.05), but still, no significant difference in their expression levels of periodontal tissue related proteins were detected within passages (BSP: F=0.926 7, P=0.450; vimentin: F=0.917 1, P=0.455; CEMP1: F=2.129, P=0.1367). CONCLUSION Our results preliminarily confirmed that long term culturing won't influence the proliferation capacity and periodontal specific differentiation propensity of iPSCs, as they can still proliferate and differentiate toward periodontal cells with high efficiency upon growth factor induction after continuous passaging. Therefore, iPSCs could be recognized as a promising cell source for future possible application in periodontal tissue regeneration.
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Affiliation(s)
- J W Li
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - X H Yin
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q X Luan
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Yin XH, Shi M, Wu H, Zhou L, Xu B. Role of HAND2 gene and protein expression in endometrial carcinoma. EUR J GYNAECOL ONCOL 2017; 38:95-101. [PMID: 29767873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To explore the relationship between HAND2 gene and protein expression and the development of endometrial carcinoma (EC). MATERIALS AND METHODS The expression of HAND2 protein was detected by immunohistochemistry in 77 cases of EC paraffin block and their matched adjacent tissues. Western blot, real-time polymerase chain reaction (RT-PCR) were used to detect the expression of HAND2 protein and mRNA HAND2 expression in 34 cases of EC fresh tissue and paired adjacent tissues. RESULTS The expression of HAND2 protein and the content of HAND2 mRNA in EC tissue were significantly lower than those in the non-tumorous tissue adjacent to EC. The positive expression rates of HAND2 protein in type I and type II EC were 19.67% and 50.00%, respectively. The expression of HAND2 protein in G1, G3, and G2 EC were 30.43%, 26.32%, 18.75%, respectively, with no statistically difference. The positive expression rates of HAND2 in the two groups of specimens with shallow and deep muscularis infiltrating were 40.63% and 15.56%, respectively. With the increase of EC FIGO stage, the positive expression rates of HAND2 protein decreased, and the difference was statistically significant (p <0.05). CONCLUSIONS HAND2 mRNA and protein low expressed in EC tissues, which suggested the degree of endometrial malignancy. HAND2 may be helpful to the early diagnosis, treatment, and to evaluate the prognosis of endometrial cancer.
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Yin XH, Wang ZQ, Guo QH, Wu H, Shi M. Overexpressed LEDGF is a novel biomarker of poor prognosis in patients with cervical cancer. EUR J GYNAECOL ONCOL 2017; 38:245-250. [PMID: 29953789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Lens epithelium-derived growth factor (LEDFG) can prevent cells apoptosis by activating stress proteins and anti-apoptotic protein, which are involved in the development of a variety of malignancies as some studies have shown. However, little is known about the role of LEDGF in cervical cancer. In this study, the authors collected 95 cases of the cervical cancer tissue samples and its matching tissue adjacent to carcinoma diagnosed by the Department of Pathology. mRNA expression of LEDFG in randomly selected 20 cervical can- cer tissues and 20 adjacent normal tissues was detected by quantitative real-time PCR (qRT-PCR). LEDFG protein expression in randomly selected 20 cervical cancer tissues and 20 adjacent normal tissues was detected by immunohistochemistry (IHC) and Western Blot (WB). All patients were followed up for about three years. The authors found that both mRNA and protein expression level of LEDFG was significantly higher in cancer tissues compared with normal controls (p < 0.05) and this overexpression was significantly correlated with the histologic grade, the immersion depth of interstitial, the invasion of vessel, and lymph node status of cervical cancer. Furthermore, the three-year survival rate of 34 patients with LEDGF positive expression having a survival rate of three years was 57.6%. The survival rate of three years with negative expression was 91.7%. The survival rate of patients with LEDGF positive ex- pression was significantly lower than those of the negative expression (p <0.01). In conclusion, the present results suggest that LEDFG expression is an independent prognostic biomarker for cervical cancer.
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Yin XH, Li YY, Fu J, Jiang D, Feng SY, Gu YQ, Cheng Y, Lyu B, Shi YJ, Ye MY, Wan BN. Improved spatial calibration for the CXRS system on EAST. Rev Sci Instrum 2016; 87:11E539. [PMID: 27910672 DOI: 10.1063/1.4962054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A Charge eXchange Recombination Spectroscopy (CXRS) diagnostic system has been developed to measure profiles of ion temperature and rotation since 2014 on EAST. Several techniques have been developed to improve the spatial calibration of the CXRS diagnostic. The sightline location was obtained by measuring the coordinates of three points on each sightline using an articulated flexible coordinate measuring arm when the vessel was accessible. After vacuum pumping, the effect of pressure change in the vacuum vessel was evaluated by observing the movement of the light spot from back-illuminated sightlines on the first wall using the newly developed articulated inspection arm. In addition, the rotation of the periscope after vacuum pumping was derived by using the Doppler shift of neutral beam emission spectra without magnetic field. Combining these techniques, improved spatial calibration was implemented to provide a complete and accurate description of the EAST CXRS system. Due to the effects of the change of air pressure, a ∼0.4° periscope rotation, yielding a ∼20 mm movement of the major radius of observation positions to the lower field side, was derived. Results of Zeeman splitting of neutral beam emission spectra with magnetic field also showed good agreement with the calibration results.
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Affiliation(s)
- X H Yin
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - Y Y Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - J Fu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - D Jiang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - S Y Feng
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - Y Q Gu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Y Cheng
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - B Lyu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Y J Shi
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - M Y Ye
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
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Li YY, Yin XH, Fu J, Jiang D, Feng SY, Lyu B, Shi YJ, Yi Y, Zhou XJ, Hu CD, Ye MY, Wan BN. First measurement of the edge charge exchange recombination spectroscopy on EAST tokamak. Rev Sci Instrum 2016; 87:11E501. [PMID: 27910523 DOI: 10.1063/1.4955279] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An edge toroidal charge exchange recombination spectroscopy (eCXRS) diagnostic, based on a heating neutral beam injection (NBI), has been deployed recently on the Experimental Advanced Superconducting Tokamak (EAST). The eCXRS, which aims to measure the plasma ion temperature and toroidal rotation velocity in the edge region simultaneously, is a complement to the exiting core CXRS (cCXRS). Two rows with 32 fiber channels each cover a radial range from ∼2.15 m to ∼2.32 m with a high spatial resolution of ∼5-7 mm. Charge exchange emission of Carbon VI CVI at 529.059 nm induced by the NBI is routinely observed, but can be tuned to any interested wavelength in the spectral range from 400 to 700 nm. Double-slit fiber bundles increase the number of channels, the fibers viewing the same radial position are binned on the CCD detector to improve the signal-to-noise ratio, enabling shorter exposure time down to 5 ms. One channel is connected to a neon lamp, which provides the real-time wavelength calibration on a shot-to-shot basis. In this paper, an overview of the eCXRS diagnostic on EAST is presented and the first results from the 2015 experimental campaign will be shown. Good agreements in ion temperature and toroidal rotation are obtained between the eCXRS and cCXRS systems.
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Affiliation(s)
- Y Y Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
| | - X H Yin
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
| | - J Fu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
| | - D Jiang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
| | - S Y Feng
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
| | - B Lyu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
| | - Y J Shi
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, China
| | - Y Yi
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, China
| | - X J Zhou
- Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
| | - C D Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
| | - M Y Ye
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
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Huang YF, Shi ZW, Liu Y, Xiao H, Yin XH. Synthesis, crystal structure, and thermal properties of three novel complexes based on 2,3-Pdc. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415050036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Li YY, Fu J, Lyu B, Du XW, Li CY, Zhang Y, Yin XH, Yu Y, Wang QP, von Hellermann M, Shi YJ, Ye MY, Wan BN. Development of the charge exchange recombination spectroscopy and the beam emission spectroscopy on the EAST tokamak. Rev Sci Instrum 2014; 85:11E428. [PMID: 25430335 DOI: 10.1063/1.4890408] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Charge eXchange Recombination Spectroscopy (CXRS) and Beam Emission Spectroscopy (BES) diagnostics based on a heating neutral beam have recently been installed on EAST to provide local measurements of ion temperature, velocity, and density. The system design features common light collection optics for CXRS and BES, background channels for the toroidal views, multi-chord viewing sightlines, and high throughput lens-based spectrometers with good signal to noise ratio for high time resolution measurements. Additionally, two spectrometers each has a tunable grating to observe any wavelength of interest are used for the CXRS and one utilizes a fixed-wavelength grating to achieve higher diffraction efficiency for the BES system. A real-time wavelength correction is implemented to achieve a high-accuracy wavelength calibration. Alignment and calibration are performed. Initial performance test results are presented.
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Affiliation(s)
- Y Y Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - J Fu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - B Lyu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - X W Du
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - C Y Li
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Y Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - X H Yin
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Y Yu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Q P Wang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - M von Hellermann
- FOM-Institute for Plasma Physics "Rijnhuizen," Association EURATOM, Trilateral Euregio Cluster, 3430BE Nieuwegein, The Netherlands
| | - Y J Shi
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - M Y Ye
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
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Fu J, Li YY, Lyu B, Sheng P, Zhang Y, Yin XH, Shi YJ, Yu Y, Ye MY, Wan BN. Preparations for the motional Stark effect diagnostic on EAST. Rev Sci Instrum 2014; 85:11D410. [PMID: 25430173 DOI: 10.1063/1.4893996] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Measurement and control of the current profile is essential for high performance and steady state operation of Experimental Advanced Superconducting Tokamak (EAST). For this purpose, a conventional Motional Stark Effect (MSE) diagnostics utilizing photoelastic modulators is proposed and investigated. The pilot experiment includes one channel to verify the feasibility of MSE, whose sightline intersects with Neutral Beam Injection at major radius of R = 2.12 m. A beam splitter is adopted for simultaneous measurements of Stark multiplets and their polarization directions. A simplified simulation code was also developed to explore the Stark splitting spectra. Finally, the filter is optimized based on the viewing geometry and neutral beam parameters.
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Affiliation(s)
- J Fu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Y Y Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - B Lyu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - P Sheng
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Y Zhang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - X H Yin
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Y J Shi
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Y Yu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - M Y Ye
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
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Tian WM, Wei CY, Peng CH, Liang P, Xiao H, Yin XH. Two novel four-coordinated zinc(II) polymers: Synthesis, structures, and properties. RUSS J COORD CHEM+ 2014. [DOI: 10.1134/s1070328414080119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Wei SQ, Lin CW, Yin XH, Du YJ, Xiong ZY. Hydrothermal synthesis, crystal structure of three novel complexes based on thiabendazole and 1,4-benzenedicarboxylate ligands. RUSS J COORD CHEM+ 2013. [DOI: 10.1134/s1070328413090091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang Z, Yin XH. Hydrothermal synthesis, crystal structure of two new coordination polymer {[Ni2(Imazameth)2(4,4′-Bipy)] · (ClO4) · CH2OH · H2O} n and [Cu2(PDA)1.5(2,2-Bipy)2](H2O)5(NO3). RUSS J COORD CHEM+ 2013. [DOI: 10.1134/s1070328413050114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
BACKGROUND Ravuconazole (BMS-207147) is a long-lasting triazole antifungal agent active against a broad spectrum of fungal pathogens including non-albicans Candida, Aspergillus, Cryptococcus and key dermatophytic fungi. METHODS The efficacy of ravuconazole was evaluated using an experimental intraabdominal abscess model in rats caused by Candida albicans (E81022). Two hundred milligrams of cyclophosphamide per kilogram was injected intraperitoneally into 40 rats. Four days (96 h) after the injection of cyclophosphamide, a mixture of C. albicans and autoclaved rat cecal contents [C. albicans 1.7 x 10(8) colony-forming units/rat] was inoculated into the peritoneal cavity. The rats were divided into four groups: ravuconazole treated, fluconazole treated, itraconazole treated and untreated. Each antifungal was given orally at a dose of 10 mg/kg twice a day for 5 days. On the day after the last administration, the rats were dissected and the viable fungi in the abscesses were determined. The number of C. albicans in each abscess was determined by a quantitative culture technique. RESULTS Ravuconazole inhibited abscess formation and significantly decreased the viable cell counts in abscesses in comparison with the untreated group. It's efficacy was at least equivalent to fluconazole and itraconazole against this pathogen. The rank order of potency (inhibition) was ravuconazole > itraconazole > fluconazole. CONCLUSION Taking into consideration the antifungal spectrum of ravuconazole, which includes non-albicans Candida as well as C. albicans and Aspergillus, it is suggested that ravuconazole would be a good agent for the treatment of fungal peritonitis.
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Affiliation(s)
- H Mikamo
- Department of Obstetrics and Gynecology, School of Medicine, Gifu University, Gifu, Japan.
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Abstract
The region located upstream of the alpha-amylase gene (amlB) of Streptomyces lividans TK24 (Yin et al., 1997) contains a 2978-bp-long ORF divergent from amlB, and designated amlC. amlC Encodes a 993amino acid (aa) protein with a calculated molecular weight of 107.054kDa. On the basis of sequence similarity as well as enzymatic activity, AmlC is likely to belong to the 1, 4-alpha-D-glucan glucanohydrolase family. amlC is transcribed as a unique 3kb leaderless monocistronic mRNA. Primer extension experiments allowed the identification of promoter sequences that do not resemble the typical eubacterial promoter sequences. amlC was successfully disrupted and was mapped at approx. 700kb from a chromosomal end of S. lividans TK24, 100kb on the right of the amplifiable unit AUD1 (Volff et al., 1996). Nevertheless, amlC disruption seemed to be accompanied by extensive rearrangements of the 2500-kb DraI-II fragment of the chromosome.
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Affiliation(s)
- X H Yin
- Laboratoire de Biologie et Génétique Moléculaire, Institut de Génétique et Microbiologie, CNRS URA D2225 Bâtiment 400, Université Paris-Sud, F-91405, Orsay, Cedex, France
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Abstract
Streptomyces lividans TK24 possesses a very weak amylolytic activity, nevertheless Southern blot analysis carried out at high stringency revealed that this strain does contain a gene strongly related to the well expressed alpha-amylase gene (amlSL) of Streptomyces limosus. To clone this related gene, three genomic banks of S. lividans TK24 were constructed into the multicopy plasmid vector pIJ699 and transformed into the same strain. Two different genes were isolated. One (amlA) has been previously described, whereas the other (amlB) has never been described. Sub-cloning experiments localized amlB to a 3 kb BamHI-NotI fragment that was sequenced. Frame analysis on sequence data revealed the presence of a 1719 bp long open reading frame encoding a 573 amino acid protein of 61214 kDa. Northern blot analysis identified a unique 1.8 kb monocistronic transcript. Primer extension allowed the localization of the transcription start point 108 bp upstream of the translational start codon and demonstrated that the gene was transcribed from a unique typical eubacterial-like promoter. AmlB shares 74.7% amino acid identity with the alpha-amylase of S. limosus and only 27.2% with the amylolytic enzyme encoded by amlA.
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Affiliation(s)
- X H Yin
- Laboratoire de Biologie et Génétique Moléculaire, Institut de Génétique et Microbiologie, CNRS URA1354, Université Paris-Sud, Orsay, France
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