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Progress in ceramic materials and structure design toward advanced thermal barrier coatings

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Journal of Advanced Ceramics 2022年第7期11卷 985-1068页

作者： Zhi-yuan WEI Guo-Hui MENG lin chen guang-rong li Mei-jun liU Wei-Xu ZHANG li-Na ZHAO Qiang ZHANG xiao-dong ZHANG Chun-Lei WAN Zhi-Xue qu lin chen Jing FENG ling liU Hui dong Ze-Bin BAO xiao-Feng ZHAO xiao-Feng ZHANG Lei GUO liang WANG Bo chenG Wei-Wei ZHANG Peng-Yun XU Guan-jun YANG hong-Neng CAI hong CUI You WANG Fu-xing YE Zhuang MA Wei PAN Min liU Ke-Song ZHOU Chang-Jiu li State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China State Key Laboratory for Strength and Vibration of Mechanical Structures Department of Engineering MechanicsSchool of Aerospace EngineeringXi’an Jiaotong UniversityXi’an 710049China xi’an Aerospace Composite Research Institute Xi’an 710025China AECC Beijing Institute of Aeronautical Materials Beijing 100095China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of New Ceramics&Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Faculty of Materials and Manufacturing Key Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China xi’an Key Laboratory of High Performance Oil and Gas Field Materials School of Materials Science and EngineeringXi’an Shiyou UniversityXi’an 710065China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming Shanghai Jiao Tong UniversityShanghai 200240China National Engineering Laboratory for Modern Materials Surface Engineering Technology the Key Lab of Guangdong for Modern Surface Engineering TechnologyInstitute of New MaterialsGuangdong Academy of SciencesGuangzhou 510650China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Integrated Computational Materials Research Centre Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China State Key Laboratory of Advanced Processing and Recycling of

Thermal barrier coatings(TBCs)can effectively protect the alloy substrate of hot components in aeroengines or land-based gas turbines by the thermal insulation and corrosion/erosion resistance of the ceramic top ***,the continuous pursuit of a higher operating temperature leads to degradation,delamination,and premature failure of the top *** new ceramic materials and new coating structures must be developed to meet the demand for future advanced TBC *** this paper,the latest progress of some new ceramic materials is first ***,a comprehensive spalling mechanism of the ceramic top coat is summarized to understand the dependence of lifetime on various factors such as oxidation scale growth,ceramic sintering,erosion,and calcium–magnesium–aluminium–silicate(CMAS)molten salt ***,new structural design methods for high-performance TBCs are discussed from the perspectives of lamellar,columnar,and nanostructure *** latest developments of ceramic top coat will be presented in terms of material selection,structural design,and failure mechanism,and the comprehensive guidance will be provided for the development of next-generation advanced TBCs with higher temperature resistance,better thermal insulation,and longer lifetime.

关键词： thermal barrier coatings(TBCs) ceramic material degradation and failure structure design long lifetime

Altered Retinal Dopamine Levels in a Melatonin-proficient Mouse Model of Form-deprivation Myopia

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Neuroscience Bulletin 2022年第9期38卷 992-1006页

作者： Kang-Wei Qian Yun-Yun li xiao-Hua Wu Xue Gong Ai-lin liu Wen-Hao chen Zhe Yang ling-Jie Cui Yun-Feng liu yuan-yuan Ma chen-xi Yu Furong huang Qiongsi Wang xiangtian Zhou Jia qu Yong-Mei Zhong xiong-li Yang Shi-jun Weng State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Institutes of Brain ScienceFudan UniversityShanghai200032China Discipline of Neuroscience and department of Anatomy and Physiology College of Basic Medical SciencesShanghai Jiao Tong University School of MedicineShanghai200025China School of Ophthalmology and Optometry and Eye Hospital Wenzhou Medical UniversityWenzhou325027China department of Immunology School of Basic Medical SciencesAnhui Medical UniversityHefei230032China

Reduced levels of retinal dopamine,a key regulator of eye development,are associated with experimental myopia in various species,but are not seen in the myopic eyes of C57BL/6 mice,which are deficient in melatonin,a neurohormone having extensive interactions with ***,we examined the relationship between form-deprivation myopia(FDM)and retinal dopamine levels in melatonin-proficient CBA/CaJ *** found that these mice exhibited a myopic refractive shift in form-deprived eyes,which was accompanied by altered retinal dopamine *** melatonin receptors were pharmacologically blocked,FDM could still be induced,but its magnitude was reduced,and retinal dopamine levels were no longer altered in FDM animals,indicating that melatonin-related changes in retinal dopamine levels contribute to ***,FDM is mediated by both dopamine level-independent and melatonin-related dopamine level-dependent mechanisms in CBA/CaJ *** previously reported unaltered retinal dopamine levels in myopic C57BL/6 mice may be attributed to melatonin deficiency.

关键词： Myopia Refractive development Dopamine Melatonin Mouse Retina

Experimental Study on High-Spin States in ^(119)Xe

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Chinese Physics Letters 2000年第7期17卷 483-484页

作者： huang Wen-xue GUO ying-xiang SUN xiang-Fu LEI xiang-guo ZHOU xiao-hong liU Zhong ZHANG Yu-Hu ZHU Shao-Fei XU xiac FENG xi-chen liUMing-Yi LUO Yi-xiao WEN Shu-xian WU xiao-guang yuan Guan-jun li guang-Sheng YANG Chun-xiang Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 China Institute of Atomic Energy Beijing 102413

High-spin states of^(119)Xe have been investigated by in-beam γ-ray spectroscopy via the reaction of ^(16)O bombarding a ^(106)Cd target at beam energies of 67-80MeV. No enhanced E1 transition was observed, the non-e... 详细信息

关键词： beam transition

Nνdex-100 conceptual design report

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Nuclear Science and Techniques 2024年第1期35卷 18-33页

作者： xi-guang Cao Yan-Long Chang Kai chen Emilio Ciuffoli li-Min Duan dong-liang Fang Chao-Song Gao Surja K.Ghorui Peng-Chong Hu Qiang Hu Si-yuan huang Ze-Yu huang Lei Lang Yu-Lan li Zhi-Jie li Tian-Yu liang jun liu chen-Gui Lu Fa-Tai Mai yuan Mei Hao Qiu xiang-Ming Sun xiao-xing Tang Hu-lin Wang Qian-Ming Wang Le xiao Mu-Yun xiao Jian-Yu xin Nu Xu Peng Yang Yi-chen Yang Zhen Yang Zong-Yang Yu dong-liang Zhang jun-Wei Zhang cheng-xin Zhao Dou Zhu Nνdex-100 collaboration Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Lanzhou University Lanzhou 730000China Central China Normal University Wuhan 430079China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Lawrence Berkeley National Laboratory BerkeleyCA 94720USA North China University of Water Resources and Electric Power Zhengzhou 450045China 不详

Observing nuclear neutrinoless double beta (0vββ) decay would be a revolutionary result in particle *** such a decay would prove that the neutrinos are their own antiparticles,help to study the absolute mass of neutrinos,explore the origin of their mass,and may explain the matter-antimatter asymmetry in our universe by lepton number *** propose developing a time projection chamber (TPC) using high-pressure ^(82)SeF_(6) gas and Topmetal silicon sensors for readout in the China Jinping Underground Laboratory (CJPL) to search for neutrinoless double beta decay of82Se,called the Nvdex *** being located at CJPL with the world’s thickest rock shielding,Nvdex combines the advantages of the high Qββ(2.996 MeV) of82Se and the TPC’s ability to distinguish signal and background events using their different topological *** makes Nvdex unique,with great potential for low-background and high-sensitivity 0 vββ***-100,a Nvdex experiment phase with 100 kg of SeF_(6)gas,is being built,with plans to complete installation at CJPL by *** report introduces 0 vββ physics,the Nvdex concept and its advantages,and the schematic design of Nvdex-100,its subsystems,and background and sensitivity estimation.

关键词： Neutrinoless double beta decay Time projection chamber ^(82)SeF_(6) China Jinping Underground Laboratory

Who can benefit more from its twelve-week treatment:A prospective cohort study of blonanserin for patients with schizophrenia

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World Journal of Psychiatry 2024年第11期14卷 1735-1745页

作者： Bao-Yan Xu Kun Jin Hai-Shan Wu Xue-jun liu xi-Jin Wang hong Sang Ke-Qing li Mei-Juan Sun Hua-Qing Meng Huai-li deng Zhi-yuan Xun xiao-dong Yang lin Zhang Guan-jun li Rui-ling Zhang Duan-Fang Cai Jia-hong liu Gui-jun Zhao Long-Fa liu Gang Wang Chang-lie Zhao Bin Guo Sheng-Chun Jin ling-Yun huang Fu-de Yang Jian-Min Zheng Gui-Lai Zhan Mao-Sheng Fang xiang-jun Meng guang-Ya Zhang Hai-Min li xiang-Lai liu Ju-hong li Bin Wu Hai-Yun li Jin-dong chen department of Psychiatry National Clinical Research Center for Mental DisordersNational Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangsha 410011Hunan ProvinceChina department of Psychiatry Hebei Provincial Mental Health CenterHebei Key Laboratory of Major Mental and Behavioral DisordersThe Sixth Clinical Medical College of Hebei UniversityBaoding 071000Hebei ProvinceChina department of Psychiatry Brain Hospital of Hunan ProvinceChangsha 410000Hunan ProvinceChina department of Psychiatry The First Psychiatric Hospital of HarbinHarbin 150000Heilongjiang ProvinceChina Mental Health Center Changchun Sixth HospitalChangchun 130000Jilin ProvinceChina department of Pharmacy Daqing Third HospitalDaqing 163000Heilongjiang ProvinceChina department of Physical and Psychological Rehabilitation Guangda Rehabilitation HospitalChongqing 400000China department of Psychology Shanxi Provincial Mental Health CenterTaiyuan 030000Shanxi ProvinceChina department of Psychiatry Tianjin Anding HospitalTianjin 300000China department of Psychiatry Shandong Mental Health CenterJinan 250000Shandong ProvinceChina department of Psychiatry Fuzhou Shenkang HospitalFuzhou 350000Fujian ProvinceChina department of Psychiatry Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghai 200000China department of Psychiatry The Second Affiliated Hospital of Xinxiang Medical UniversityXinxiang 453000Henan ProvinceChina department of Psychiatry The Fifth People’s Hospital of ZigongZigong 643000Sichuan ProvinceChina department of Psychiatry The Affiliated Kangning Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina department of Psychiatry Guangyuan Mental Health CenterGuangyuan 628000Sichuan ProvinceChina department of Psychiatry Jilin Sixth People’s HospitalJilin 132000Jilin ProvinceChina The National Clinical Research Center for Mental Disorders&Beijing Key Laboratory of Mental Disorders Beijing Anding Hospital

BACKGROUND Blonanserin(BNS)is a well-tolerated and effective drug for treating *** To investigate which types of patients would obtain the most benefit from BNS *** A total of 3306 participants were evaluated in a 12-week,prospective,multicenter,open-label post-marketing surveillance study of *** psychiatric rating scale(BPRS)scores were calculated to evaluate the effectiveness of BNS,and its safety was assessed with the incidence of adverse drug *** regression was used to screen the influencing factors for the reduction of BPRS total score,and logistic regression was used to identify patients with a better response to *** The baseline BPRS total score(48.8±15.03)decreased to 27.7±10.08 at 12 weeks(Pquent adverse drug *** acute phase,baseline BPRS total score,current episode duration,number of previous episodes,dose of concomitant antipsychotics,and number of types of sedative-hypnotic agents were found to be independent factors affecting the reduction of BPRS total score after treatment ***,patients in the acute phase with baseline BPRS total score≥45,current episode durationdes derived greater benefit from 12-week treatment with *** Patients in the acute phase with more severe symptoms,shorter current episode duration,fewer previous episodes,and a lower psychotropic drug load derived the greatest benefit from treatment with BNS.

关键词： Schizophrenia Blonanserin Effectiveness Psychosocial functioning Prospective cohort study

Measurement of the neutron total cross section of carbon at the Back-n white neutron beam of CSNS

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Nuclear Science and Techniques 2019年第9期30卷 73-82页

作者： xing-Yan liu Yi-Wei Yang rong liu Jie Wen Zhong-Wei Wen Zi-Jie Han Zhi-Zhou Ren Qi An Huai-Yong Bai Jie Bao Ping Cao Qi-Ping chen Yong-Hao chen Pin-Jing cheng Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Min-Hao Gu Feng-Qin Guo Chang-Cai Han Guo-Zhu He Yong-cheng He Yue-Feng He Han-xiong huang Wei-ling huang xi-Ru huang xiao-Lu Ji Xu-Yang Ji Hao-Yu Jiang Wei Jiang Han-Tao Jing ling Kang Ming-Tao Kang Bo li Lun li Qiang li xiao li Yang li Yang li Shu-Bin liu guang-yuan Luan ying-lin Ma Chang-jun Ning Bin-Bin Qi Jie Ren xi-Chao Ruan Zhao-Hui Song hong Sun xiao-Yang Sun Zhi-Jia Sun Zhi-xin Tan hong-Qing Tang Jing-Yu Tang Peng-cheng Wang Qi Wang Tao-Feng Wang Yan-Feng Wang Zhao-Hui Wang Zheng Wang Qing-Biao Wu xiao-guang Wu Xuan Wu li-Kun xie Han Yi li Yu Tao Yu Yong-Ji Yu Guo-Hui Zhang Jing Zhang lin-Hao Zhang li-ying Zhang Qing-Min Zhang Qi-Wei Zhang xian-Peng Zhang Yu-liang Zhang Zhi-Yong Zhang ying-Tan Zhao liang Zhou Zu-ying Zhou Dan-Yang Zhu Ke-jun Zhu Peng Zhu Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics State Key Laboratory of Particle detection and Electronics Chinese Academy of Sciences(CAS) department of Modern Physics University of Science and Technology of China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking University Key Laboratory of Nuclear Data China Institute of Atomic Energy Institute of High Energy Physics Chinese Academy of Sciences(CAS) Spallation Neutron Source Science Center University of South China Northwest Institute of Nuclear Technology department of Engineering and Applied Physics University of Science and Technology of China Beihang University xi’an Jiaotong University

To verify the performance of the neutron total cross-sectional spectrometer, the neutron total cross section of carbon is initially measured in the energy range of 1 eV to 20 MeV using the time-of-flight method. The measurement is performed at the Back-n white neutron source with a 76-m time-of-flight path using the China Spallation Neutron Source. A multilayer fast fission chamber with 235U and 238U is employed as the neutron detector. The diameter and thickness of the natural graphite sample are 70 mm and 40 mm, respectively. Signal waveforms are collected using a data acquisition system. Off-line data processing was used to obtain the neutron time-of-flight spectra and transmissions. The uncertainty of the counting statistics is generally approximately 3% for each bin in the energy range of 1–20 MeV. It is determined that the results for the neutron total cross section of carbon obtained using ^235U cells are in good agreement with the results obtained using 238U cells within limits of statistical uncertainty. Moreover, the measured total cross sections show good agreement with the broadening evaluated data.

关键词： CSNS Back-n white neutron source NTOX Neutron total cross section Carbon Multilayer fast fission chamber

Measurement of the ^(232)Th(n,f)cross section in the 1-200 MeV range at the CSNS Back-n

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Nuclear Science and Techniques 2023年第8期34卷 142-153页

作者： Zhi-Zhou Ren Yi-Wei Yang Yong-Hao chen rong liu Bang-Jiao Ye Jie Wen Hai-Rui Guo Zi-Jie Han Qi-Ping chen Zhong-Wei Wen Wei-li Sun Han Yi xing-Yan liu Tao Ye Jiang-Bo Bai Qi An Jie Bao Yu Bao Ping Cao Hao-Lei chen Zhen chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Ke-Qing Gao xiao-Long Gao Min-Hao Gu Chang-Cai Han Guo-Zhu He Yong-cheng He Yang hong Yi-Wei Hu Han-xiong huang xi-Ru huang Hao-Yu Jiang Wei Jiang Zhi-Jie Jiang Han-Tao Jing ling Kang Bo li Chao li Jia-Wen li Qiang li xiao li Yang li Jie liu Shu-Bin liu Ze Long guang-yuan Luan Chang-jun Ning Meng-chen Niu Bin-Bin Qi Jie Ren xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-xin Tan Jing-Yu Tang xin-Yi Tang Bin-Bin Tian li-Jiao Wang Peng-cheng Wang Zhao-Hui Wang xiao-guang Wu Xuan Wu li-Kun xie xiao-Yun Yang li Yu Tao Yu Yong-Ji Yu Guo-Hui Zhang lin-Hao Zhang Qi-Wei Zhang xian-Peng Zhang Yu-liang Zhang Zhi-Yong Zhang Lu-Ping Zhou Zhi-Hao Zhou Ke-jun Zhu department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Applied Physics and Computational Mathematics Beijing 100088China State Key Laboratory of Particle detection and Electronics University of Science and Technology of ChinaHefei 230027China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China

The ^(232)Th(n,f)cross section is very important in basic nuclear physics and applications based on the Th/U fuel *** the time-of-flight method and a multi-cell fast-fission ionization chamber,a novel measurement of the^(232)Th(n,f)cross sec-tion relative to^(235)U in the 1–200 MeV range was performed at the China Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(232)Th and^(235)U fission cells were measured in the single-bunch *** 232Th/235U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2–20 MeV range and 3.6–6.2%for energies in the 20–200 MeV ***^(232)Th(n,f)cross section was obtained by introducing the standard cross section of^(235)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 232Th fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 232Th fission resonances were observed in the 1–3 MeV *** present results provide^(232)Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 232Th(n f)cross section Fast-fission ionization chamber Back-n white neutron source

Lung-protective Ventilation in Patients with Brain Injury： A Multicenter Cross-sectional Study and questionnaire Survey in China

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Chinese Medical Journal 2016年第14期129卷 1643-1651页

作者： Xu-ying Luo ying-hong Hu xiang-yuan Cao Yan Kang li-Ping liu Shou-hong Wang rong-Guo Yu xiang-You Yu xia Zhang Bao-Shan li Zeng-xiang Ma Yi-Bing Weng Heng Zhang de-Chang chen Wei chen Wen-Jin chen xiu-Mei chen Bin Du Mei-li Duan Jin Hu Yun-Feng Hoang Gui-jun Jia li-hong li Yu-Min liang Bing-Yu Qin xian-dong Wang Jian xiong li-Mei Yan Zheng-Ping Yang chen-Ming dong dong-xin Wang Qing-yuan Zhan Shuang-lin FU lin Zhao Qi-Bing huang ying-guang xie xiao-Bo huang Guo-Bin Zhang Wang-Bin Xu yuan Xu Yaling liu He-ling Zhao rong-Qing Sun Ming Sun Qing-hong cheng xin qu xiao-Feng Yang Ming Xu Zhong-Hua Shi Han chen Xuan He Yan-lin Yang guang-Qiang chen xiu-Mei Sun Jian-xin Zhou department of Critical Care Medicine Beijing Tiantan Hospital Capital Medical University Beijing 100050 China department of Critical Care Medicine Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou Zhejiang 310009 China department of Critical Care Medicine General Hospital of Ningxia Medical University Yinchuan Ningxia 750004 China department of Critical Care Medicine West China Hospital Sichuan University Chengdu Sichuan 610041 China Neurological Intensive Care Unit Beijing Tiantan Hospital Capital Medical University Beijing 100050 China department of Critical Care Medicine Guangdong General Hospital Guangzhou Guangdong 510000 China Surgical Intensive Care Unit Fujian Province Hospital Fuzhou Fujian 350000 China department of Critical Care Medicine First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang 830054 China department of Critical Care Medicine Bethune International Peace Hospital Shijiazhuang Hebei 050000 China department of Critical Care Medicine Yuncheng Central Hospital Yuncheng Shanxi 044000 China department of Emergency and Critical Care Medicine Cangzhou People's Hospital Cangzhou Hebei 061000 China department of Critical Care Medicine Beijing Luhe Hospital Capital Medical University Beijing 101100 China department of Critical Care Medicine First Hospital of China Medical University Shenyang Liaoning 110000 China department of Critical Care Medicine Shanghai Changzheng Hospital Shanghai 200000 China department of Critical Care Medicine Beijing Shijitan Hospital Capital Medical University Beijing 100038 China department of Critical Care Medicine Xuanwu Hospital Capital Medical University Beijing 100053 China department of Critical Care Medicine Miyun County Hospital Beijing 100038 China Medical Intensive Care Unit Peking Union Medical College Hospital Beijing 101500 China department of Critical Care Medicine Beijing Friendship Hospital Capital Medical University Beijing 100050 Chin

Background： Over the years, the mechanical ventilation （MV） strategy has changed worldwide. The aim of the present study was to describe the ventilation practices, particularly lung-protective ventilation （LPV）, among brain-injured patients in China. Methods： This study was a multicenter, 1-day, cross-sectional study in 47 Intensive Care Units （ICUs） across China. Mechanically ventilated patients （18 years and older） with brain injury in a participating ICU during the time of the study, including traumatic brain injury, stroke, postoperation with intracranial tumor, hypoxic-ischemic encephalopathy, intracranial infection, and idiopathic epilepsy, were enrolled. demographic data, primary diagnoses, indications for MV, MV modes and settings, and prognoses on the 60th day were collected. Multivariable logistic analysis was used to assess factors that might affect the use of LPV. Results： A total of 104 patients were enrolled in the present study, 87 （83.7%） of whom were identified with severe brain injury based on a Glasgow Coma Scale 〈8 points. Synchronized intermittent mandatory ventilation （SIMV） was the most frequent ventilator mode, accounting for 46.2% of the entire cohort. The median tidal volume was set to 8.0 ml/kg （interquartile range [IQR], 7.0-8.9 ml/kg） of the predicted body weight; 50 （48.1%） patients received LPV. The median positive end-expiratory pressure （PEEP） was set to 5 cmH20 （IQR, 5-5 cmH20）. No PEEP values were higher than 10 cmH20. Compared with partially mandatory ventilation, supportive and spontaneous ventilation practices were associated with LPV. There were no significant differences in mortality and MV duration between patients subjected to LPV and those were not. Conclusions： Among brain-injured patients in China, SIMV was the most frequent ventilation mode. Nearly one-half of the brain-injured patients received LPV. Patients under supportive and spontaneous ventilation were more likely to receive LPV.

关键词： Brain Injury Epidemiology Lung-protective Ventilation Mechanical Ventilation

Back-n white neutron source at CSNS and its applications

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Nuclear Science and Techniques 2021年第1期32卷 95-104页

作者： Jing-Yu Tang Qi An Jiang-Bo Bai Jie Bao Yu Bao Ping Cao Hao-Lei chen Qi-Ping chen Yong-Hao chen Zhen chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Ke-Qing Gao xiao-Long Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-cheng He Yang hong Yi-Wei Hu Han-xiong huang xi-Ru huang Hao-Yu Jiang Wei Jiang Zhi-Jie Jiang Han-Tao Jing ling Kang Bo li Chao li Jia-Wen li Qiang li xiao li Yang li Jie liu rong liu Shu-Bin liu xing-Yan liu Ze Long guang-yuan Luan Chang-jun Ning Meng-chen Niu Bin-Bin Qi Jie Ren Zhi-Zhou Ren xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-xin Tan xin-Yi Tang Bin-Bin Tian li-Jiao Wang Peng-cheng Wang Zhao-Hui Wang Zhong-Wei Wen xiao-guang Wu Xuan Wu li-Kun xie xiao-Yun Yang Yi-Wei Yang Han Yi li Yu Tao Yu Yong-Ji Yu Guo-Hui Zhang lin-Hao Zhang Qi-Wei Zhang xian-Peng Zhang Yu-liang Zhang Zhi-Yong Zhang Lu-Ping Zhou Zhi-Hao Zhou Ke-jun Zhu 无 State Key Laboratory of Particle detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle detection and Electronics University of Science and Technology of ChinaHefei 230026China The CSNS Back-n Collaboration

Back-streaming neutrons from the spallation target of the China Spallation Neutron Source(CSNS)that emit through the incoming proton channel were exploited to build a white neutron beam facility(the so-called Back-n white neutron source),which was completed in March *** Back-n neutron beam is very intense,at approximately 29107 n/cm2/s at 55 m from the target,and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the *** addition,the excellent energy spectrum spanning from 0.5 eV to 200 MeV,and a good time resolution related tothe time-of-flight measurements make it a typical white neutron source for nuclear data measurements;its overall performance is among that of the best white neutron sources in the *** with advanced spectrometers,detectors,and application utilities,the Back-n facility can serve wide applications,with a focus on neutron-induced cross-sectional *** article presents an overview of the neutron beam characteristics,the experimental setups,and the ongoing applications at Backn.

关键词： White neutron source Nuclear data measurements Experimental setups Neutron applications