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Brain development in newborns and infants after ECMO

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World Journal of Pediatrics 2024年第6期20卷 556-568页

作者： Kai Yan Lu-kun Tang Fei-Fan xiao Peng Zhang guo-Qiang Cheng Lai-Shuan Wang Chun-Mei Lu Meng-Meng Ge Li-Yuan hu Yuan-Feng zhou tian-tian xiao Yan xu zhao-qing Yin Gang-Feng Yan guo-Ping Lu Qi Li Wen-Hao zhou Department of Neonatology Children Hospital of Fudan UniversityShanghai 201102China kunming Medical University Affiliated Dehong Hospital DehongYunnanChina Graduate School Kunming Medical UniversityKunmingYunnanChina Department of Neurology Children's Hospital of Fudan UniversityShanghaiChina School of Medicine Chengdu Women's and Children's Central HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina Department of Intensive Care Medicine Children's Hospital of Fudan UniversityShanghaiChina Department of Intensive Care Medicine The Sixth Medical Center of PLA General HospitalBeijingChina Key Laboratory of Neonatology National Health Care CommissionShanghaiChina

Background Extracorporeal membrane oxygenation(ECMO)not only significantly improves survival rates in severely ill neonates but also is associated with long-term neurodevelopmental *** systematically review the available literature on the neurodevelopmental outcomes of neonates and infants who have undergone ECMO treatment,with a focus on motor deficits,cognitive impairments,sensory impairments,and developmental *** review aims to understand the incidence,prevalence,and risk factors for these problems and to explore current nursing care and management *** sources A comprehensive literature search was performed across PubMed,EMBASE,and Web of Science using a wide array of keywords and phrases pertaining to ECMO,neonates,infants,and various facets of *** initial screening involved reviewing titles and abstracts to exclude irrelevant articles,followed by a full-text assessment of potentially relevant *** quality of each study was evaluated based on its research methodology and statistical ***,citation searches were conducted to identify potentially overlooked *** the focus was primarily on neonatal ECMO,studies involving children and adults were also included due to the limited availability of neonate-specific *** About 50%of neonates post-ECMO treatment exhibit varying degrees of brain injury,particularly in the frontal and temporoparietal white matter regions,often accompanied by neurological *** occur in 18%–23%of neonates within the first 24 hours,and bleeding events occur in 27%–60%of ECMO procedures,with up to 33%potentially experiencing ischemic *** some studies suggest that ECMO may negatively impact hearing and visual development,other studies have found no significant differences;hence,the influence of ECMO remains *** terms of cognitive,language,and intellectual development,ECMO treatment may be associated with potential deve

关键词： Brain development Extracorporeal membrane oxygenation Infants Neonates Neurological outcomes

Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

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Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： Qiang Li Li‑Jiao Wang Xiang‑Biao qiu Jing‑Wen Li wei xu Tao Li Ze‑Bin Lin Chang‑Jun Ning Yong‑Hao Chen Rui‑Rui Fan Kang Sun Jing‑Yu Tang Rong Zhang Han‑Tao Jing Bo Mei Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Zhen Chen Zeng‑Qi Cui An‑Chuan Fan Chang‑qing Feng Fan‑Zhen Feng Ke‑qing Gao Min‑Hao Gu Chang‑Cai Han Zi‑Jie Han guo‑Zhu He Yong‑Cheng He Yang hong Yi‑wei hu Han‑Xiong huang wei‑hua Jia Hao‑Yu Jiang wei Jiang zhi‑Jie Jiang Zheng‑Yao Jin Ling Kang Bo Li Chao Li Gong Li Jia‑Wen Li xiao Li Yang Li Jie Liu Rong Liu Shu‑Bin Liu Guang‑Yuan Luan Bin‑Bin Qi Jie Ren zhi‑zhou Ren Xi‑Chao Ruan zhao‑hui Song zhi‑Xin Tan Sheng‑Da Tang Peng‑Cheng Wang zhao‑hui Wang Zhong‑wei Wen xiao‑Guang Wu xuan Wu Li‑kun Xie Yi‑wei Yang Han Yi Yong‑Ji Yu guo‑hui Zhang Lin‑Hao Zhang Mo‑Han Zhang Qi‑wei Zhang Xian‑Peng Zhang Yu‑Liang Zhang Yue Zhang zhi‑Yong Zhang Mao‑Yuan zhao Lu‑Ping zhou zhi‑Hao zhou Ke‑Jun Zhu Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.10B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 10 mol%10B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron *** neutron detection efficiency was calibrated at 1 eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 10 B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 10B-doped MCP Neutron response Wide-energy range neutrons

Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

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Nuclear Science and Techniques 2024年第1期35卷 178-187页

作者： Sheng-Da Tang Yong-Hao Chen Jing-Yu Tang Rui-Rui Fan Qiang Li Gong Li dong Liu Zheng-Yao Jin Xing-Zhu Cui tian-Xiang Chen Yi-wei Yang Rong Liu Han Yi Yang Li Zhen Yang Qi An Hao-Fan Bai Jiang-Bo Bai Jie Bao Ping Cao Qi-Ping Chen Zhen Chen Zeng-Qi Cui An-Chuan Fan Chang-qing Feng Fan-Zhen Feng Ke-qing Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han guo-Zhu He Yong-Cheng He Yang hong Yi-wei hu Han-Xiong huang wei-hua Jia Hao-yu Jiang wei Jiang zhi-jie Jiang Ling Kang Bo Li Chao Li Jia-Wen Li xiao Li Jie Liu Shu-Bin Liu Guang-Yuan Luan Chang-Jun Ning Bin-Bin Qi Jie Ren zhi-zhou Ren Xi-Chao Ruan zhao-hui Song Kang Sun zhi-Xin Tan Li-Jiao Wang Peng-Cheng Wang zhao-hui Wang Zhong-wei Wen xiao-Guang Wu xuan Wu Li-kun Xie Yong-Ji Yu guo-hui Zhang Lin-Hao Zhang Mo-Han Zhang Qi-wei Zhang Xian-Peng Zhang Yu-Liang Zhang Yue Zhang zhi-Yong Zhang Mao-Yuan zhao Lu-Ping zhou zhi-Hao zhou Ke-Jun Zhu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Institute of High-Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China USTC Archaeometry Laboratory University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Nondestructive and noninvasive neutron assays are essential applications of neutron *** resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an *** back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the China Spallation Neutron Source(CSNS)that provides neutrons in the eV to 300 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test *** results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at *** study reveals its potential future applications.

关键词： CSNS White neutron beam NRTA Nuclide identification Nondestructive method

Probing dark matter particles from evaporating primordial black holes via electron scattering in the CDEX-10 experiment

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Science China(Physics,Mechanics & Astronomy) 2024年第10期Mechanics & Astronomy) .卷 87-95页

作者： Zhenhua Zhang Litao Yang Qian Yue Kejun Kang Yuanjing Li Haipeng An Greeshma C. Jianping Chang Yunhua Chen Jianping Cheng Wenhan Dai zhi Deng Changhao Fang Xinping Geng hui Gong qiuju guo Tao guo xuyuan guo Li He Shengming He Jinwei hu Hanxiong huang Tuchen huang Lin Jiang S.Karmakar Haubin Li Hanyu Li Jianmin Li Jin Li Qianyun Li Renmingjie Li xueqian Li Yulan Li Yifan Liang Bin Liao FongKay Lin ShinTed Lin Jiaxuan Liu Shukui Liu Yandong Liu Yu Liu Yuanyuan Liu Hao Ma Yucai Mao Qiyuan Nie Jinhua Ning hui Pan Ningchun Qi Jie Ren Xichao Ruan Monoj Kumar Singh tianxi Sun Changjian Tang Yang tian Guangfu Wang Junzheng Wang Li Wang qing Wang Yufeng Wang Yunxiang Wang Henry Tsz-King Wong Shiyong Wu Yucheng Wu Haoyang Xing Rui xu Yin xu Tao xue Yulu Yan Nan Yi Chunxu Yu Haijun Yu Jianfeng Yue Ming Zeng zhi Zeng Bingtao Zhang Fengshou Zhang Lei Zhang Zhenyu Zhang Jizhong zhao Kangkang zhao Minggang zhao Jifang zhou Zuying zhou Jingjun Zhu CDEX Collaboration Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics Tsinghua University Department of Physics Tsinghua University Institute of Physics Academia Sinica NUCTECH Company YaLong River Hydropower Development Company College of Nuclear Science and Technology Beijing Normal University College of Physics Sichuan University School of Physics Peking University Department of Nuclear Physics China Institute of Atomic Energy Sino-French Institute of Nuclear and Technology Sun Yet-sen University School of Physics Nankai University Department of Physics Banaras Hindu University Department of Physics Beijing Normal University

Dark matter（DM） is a major constituent of the ***,no definite evidence of DM particles（denoted as “χ”） has been found in DM direct detection（DD） experiments to *** is a novel concept of detectingχfrom evaporating primordial black holes（PBHs）.We search forχemitted from PBHs by investigating their interaction with target *** examined PBH masses range from 1×1015to 7×1016g under the current limits of PBH abundance *** 205.4 kg·day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory,we exclude the χ-electron（χ-e） elastic-scattering cross section σχe～5×10-29cm2for χ with a mass ■ keV from our *** the higher radiation background but lower energy threshold（160 eV）,CDEX-10 fills a part of the gap in the previous *** (mχ,σχe) can be determined in the future,DD experiments are expected to impose strong constraints on fPBHfor large MPBHs.

关键词： CDEX primordial black hole light dark matter particle dark matter-electron scattering high purity germanium detector

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CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci xiao-Jun Bi Yuanjie Bi tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai huacheng Cai Lorenzo Calibbi Junsong Cang guofu Cao Jianshe Cao Antoine Chance xuejun Chang Yue Chang Zhe Chang Xinyuan Chang wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen guoming Chen hua-Xing Chen huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen tianlu Chen wei Chen Xiang Chen xiaoyu Chen Xin Chen xun Chen xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui xiaohao Cui zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng wei-tian Deng zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhu&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

Lung transplantation as therapeutic option in acute respiratory distress syndrome for coronavirus disease 2019-related pulmonary fibrosis

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Chinese Medical Journal 2020年第12期133卷 1390-1396页

作者： Jing-Yu Chen kun Qiao Feng Liu Bo Wu Xin xu guo-qing Jiao Rong-guo Lu hui-Xing Li Jin zhao Jian huang Yi Yang xiao-Jie Lu Jia-Shu Li Shu-Yun Jiang Da-Peng Wang Chun-xiao hu Gui-Long Wang dong-xiao huang guo-hui Jiao dong wei Shu-Gao Ye Jian-An huang Li zhou xiao-Qin Zhang Jian-Xing He Wuxi Lung Transplant Center Wuxi People’s Hospital Affiliated to Nanjing Medical UniversityWuxiJiangsu 214023China Department of Thoracic Surgery Shenzhen Third People’s HospitalShenzhenGuangdong 518100China Department of Thoracic Surgery/Oncology State Key Laboratory and National Clinical Research Center for Respiratory DiseaseThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong 510120China Department of Cardiothoracic Surgery Wuxi People’s Hospital Affiliated to Nanjing Medical UniversityWuxiJiangsu 214023China Department of Critical Care Medicine Zhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsu 210009China Wuxi Fifth Hospital WuxiJiangsu 214000China Department of Respiratory Medicine and Critical Care Medicine The First People’s Hospital of Lianyungang CityLianyungangJiangsu 222061China Department of Critical Care Medicine Wuxi People’s Hospital Affiliated to Nanjing Medical UniversityWuxiJiangsu 214023China Department of Anesthesiology Wuxi People’s Hospital Affiliated to Nanjing Medical UniversityWuxiJiangsu 214023China Department of Respiratory Medicine The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215006China

Background:Critical patients with the coronavirus disease 2019(COVID-19),even those whose nucleic acid test results had turned negative and those receiving maximal medical support,have been noted to progress to irreversible fatal respiratory *** transplantation(LT)as the sole therapy for end-stage pulmonary fibrosis related to acute respiratory distress syndrome has been considered as the ultimate rescue therapy for these ***:From February 10 to March 10,2020,three male patients were urgently assessed and listed for *** conducting a full ethical review and after obtaining assent from the family of the patients,we performed three LT procedures for COVID-19 patients with illness durations of more than one month and extremely high sequential organ failure assessment ***:Two of the three recipients survived post-LT and started participating in a rehabilitation *** of the LT team collaboration and perioperative logistics were summarized and continually *** pathological results of the explanted lungs were concordant with the critical clinical manifestation,and provided insight towards better understanding of the *** health affair systems,virology detection tools,and modern communication technology all play key roles towards the survival of the patients and their ***:LT can be performed in end-stage patients with respiratory failure due to COVID-19-related pulmonary *** confirmed positive-turned-negative virology status without organ dysfunction that could contraindicate LT,LT provided the final option for these patients to avoid certain death,with proper protection of transplant surgeons and medical *** ensuring instant seamless care for both patients and medical teams,the goal of reducing the mortality rate and salvaging the lives of patients with COVID-19 can be attained.

关键词： Coronavirus disease 2019 Lung transplantation Acute respiratory distress syndrome Pulmonary fibrosis Sequential Organ Failure Assessment score

基于白光中子源的^(197)Au中子辐射俘获截面测量及共振参数分析

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物理学报 2024年第7期73卷 104-113页

作者：罗淏天张奇玮栾广源王晓宇邹翀任杰阮锡超贺国珠鲍杰孙琪黄翰雄王朝辉吴鸿毅顾旻皓余滔解立坤陈永浩安琪白怀勇鲍煜曹平陈昊磊陈琪萍陈裕凯陈朕崔增琪樊瑞睿封常青高可庆韩长材韩子杰何泳成洪杨黄蔚玲黄锡汝季筱璐吉旭阳蒋伟江浩雨姜智杰敬罕涛康玲康明涛李波李超李嘉雯李论李强李晓李样刘荣刘树彬刘星言穆奇丽宁常军齐斌斌任智洲宋英鹏宋朝晖孙虹孙康孙晓阳孙志嘉谭志新唐洪庆唐靖宇唐新懿田斌斌王丽娇王鹏程王琦王涛峰文杰温中伟吴青彪吴晓光吴煊羊奕伟易晗于莉于永积张国辉张林浩张显鹏张玉亮张志永赵豫斌周路平周祖英朱丹阳朱科军朱鹏朱兴华中国原子能科学研究院核数据重点实验室北京102413 中国科学院高能物理研究所北京100049 散裂中子源科学中心东莞523803 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系核探测与核电子学国家重点实验室合肥230026 北京大学物理学院核物理与核技术国家重点实验室北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 西北核技术研究院西安710024 中国科学院大学北京100049 中国科学技术大学工程与应用物理系合肥230026 北京航空航天大学物理学院北京100083 华能山东石岛湾核电有限公司荣成264312

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室... 详细信息

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室建立了伽马全吸收装置(Gamma total absorption facility,GTAF),该装置用28块六棱BaF_(2)晶体和12块五棱BaF_(2)晶体构成了外径25 cm,内径10 cm的球壳,覆盖了95.2%的立体角.利用GTAF在中国散裂中子源Back-n束线上,测量了197Au(n,γ)的反应截面数据.测量数据通过能量筛选、PSD方法、晶体多重性筛选进行了初步本底扣除,随后结合对^(nat)C及空样品的测量数据对本底进行了分析及扣除,获得了197Au俘获反应的产额,利用SAMMY程序拟合得到了^(197)Au在1—100 e V的共振能量、中子共振宽度和伽马共振宽度参数.实验测量结果与ENDF/B-VIII.0数据库符合良好,其共振参数存在一定差异,分析原因可能与GTAF能量分辨率、Back-n的中子能谱测量精度、以及实验本底扣除方法相关,这也是下一步工作的重点.

关键词：中子辐射俘获截面共振参数白光中子源伽马全吸收装置

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Disappearance of Superconductivity and a Concomitant Lifshitz Transition in Heavily Overdoped Bi_2Sr_2CuO_6 Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy

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Chinese Physics Letters 2019年第1期36卷 60-64页

作者： Ying Ding Lin zhao hong-Tao Yan Qiang Gao Jing Liu Cheng hu Jian-wei huang Cong Li Yu xu Yong-qing Cai hong-Wao Rong Ding-Song Wu Chun-Yao Song hua-xue zhou xiao-Li dong guo-dong Liu qing-Yan Wang Shen-Jin Zhang zhi-Min Wang Feng-Feng Zhang Feng Yang Qin-JunPeng Zu-Yan xu Chuang-tian Chen X.J.zhou Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Technical Institute of Physics and Chemistry Chinese Academy of Sciences Collaborative Innovation Center of Quantum Matter

By partially doping Pb to effectively suppress the superstructure in single-layered cuprate Bi_2Sr_2CuO_(6+δ)(Pb-Bi2201) and annealing them in vacuum or in high pressure oxygen atmosphere, a series of high quality Pb-Bi2201 single crystals are obtained with T_c covering from 17 K to non-superconducting in the overdoped region. High resolution angle resolved photoemission spectroscopy measurements are carried out on these samples to investigate the evolution of the Fermi surface topology with doping in the normal state. Clear and complete Fermi surfaces are observed and quantitatively analyzed in all of these overdoped Pb-Bi2201 samples. A Lifshitz transition from holelike Fermi surface to electron-like Fermi surface with increasing doping is observed at a doping level of ~0.35. This transition coincides with the change that the sample undergoes superconducting-to-non-superconducting *** results reveal the emergence of an electron-like Fermi surface and the existence of a Lifshitz transition in heavily overdoped Bi2201 samples. This provides important information in understanding the connection between the disappearance of superconductivity and the Lifshitz transition in the overdoped region.

关键词： Angular resolved light emission spectrometry Concomitant Lifshitz Transition Bi2Sr2CuO6

Prevalence of Nontraumatic Osteonecrosis of the Femoral Head and its Associated Risk Factors in the Chinese Population： Results from a Nationally Representative Survey

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Chinese Medical Journal 2015年第21期128卷 2843-2850页

作者： De-wei zhao Mang Yu Kai hu wei Wang Lei Yang Ben-Jie Wang xiao-hong Gao Yong-Ming guo Yong-qing xu Yu-Shan wei Si-Miao tian Fan Yang Nan Wang Shi-Bo huang hui Xie xiao-wei wei Hai-Shen Jiang Yu-Qiang Zang Jun Ai Yuan-Liang Chen Guang-hua Lei Yu-Jin Li Geng Tia Zong-Sheng Li Yong Cao Li Ma Orthopedic Medical Research Center Dalian University Dalian Liaoning 116001 China Department of Orthopaedics Affiliated Zhongshan Hospital of Dalian University Dalian Liaoning 116001 China Department of Pathology Stanford University School of Medicine Stanford CA USA Medical Clinic I University Hospital Wurzburg Worzburg Germany Department of Epidemiology and Statistics School of Public Health Dalian Medical University Oalian Liaoning 116044 China Department of Orthopaedics Xi'an 521 Hospital Xi'an Shaanxi 710065 China Department of Orthopaedics Kunming General Hospital of Chengdu Military Region Kunming Yunnan 650032 China Department of Clinical Laboratory Affiliated Zhongshan Hospital of Dalian University Dalian Liaoning 116001 China Department of Orthopaedics The First People's Hospital of Horqin District Tongliao Inner Mongolia 028000 China Department of Orthopaedics The People's Hospital of Changhai County Dalian Liaoning 116500 China Department of Health Kunming Kun Lu Hospital Kunming Yunnan 650217 China Department of Orthopaedics The People's Hospital of Haikou Haikou Hainan 570208 China Department of Orthopaedics Xiangya Hospital of Central South University Changsha Hunan 410008 China Department of Orthopaedics The People's Hospital of Fangzheng County Harbin Heilongjiang 150800 China Department of Orthopaedics The People's Hospital of Qionghai Qionghai Hainan 571400 China Department of Imaging Traditional Chinese Medicine Orthopedics Hospital of Xiaoshan Hangzhou Zhejiang 311261 China Department of Imaging Red Star Hospital of Agricultural Thirteen Division of Hami Hami Xinjiang 839000 China

Background： Nontraumatic osteonecrosis of the femoral head （NONFH） is a debilitating disease that represents a significant financial burden for both individuals and healthcare systems. Despite its significance, however, its prevalence in the Chinese general population remains unknown. This study aimed to investigate the prevalence of NONFH and its associated risk factors in the Chinese population. Methods： A nationally representative survey of 30,030 respondents was undertaken from June 2012 to August 2013. All participants underwent a questionnaire investigation, physical examination of hip, and bilateral hip joint X-ray and/or magnetic resonance imaging exalnination. Blood samples were taken after overnight fasting to test serum total cholesterol, triglyceride, and high-density lipoprotein （HDL） and low-density lipoprotein （LDL） levels. We then used multivariate logistic regression analysis to investigate the associations between various metabolic, demographic, and lifestyle-related variables and NONFH. Results： NONFH was diagnosed in 218 subjects （0.725%） and the estimated NONFH cases were 8.12 million among Chinesepeople aged 15 years and over. The prevalence of NONFH was significantly higher in males than in females （1.02% vs. 0.51%, x^2 = 24.997, P 〈 0.001 ）. Among NONFH patients, North residents were subjected to higher prevalence of NONFH than that of South residents （0.85% vs. 0.61%,x^2= 5.847, P = 0.016）. Our multivariate regression analysis showed that high blood levels oftriglycerides, total cholesterol, LDL-cholesterol, and non-H DL-cholesterol, male, urban residence, family history of osteonecrosis of the femoral head. heavy smoking, alcohol abuse and glucocorticoid intake, overweight, and obesity were all significantly associated with an increased risk of NONFH. Conclusions： Our findings highlight that NONFH is a significantpublic health challenge in China and underscore the need for policy measures on the national level. Furthermore, NONFH shares a n

关键词： Nontraumatic Osteonecrosis of the Femoral Head Prevalence Risk Factors