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

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

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10B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

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Nuclear Science and Techniques 2024年第8期35卷 58-68页

作者： Qiang li li‑Jiao Wang Jing‑Yu tang Xiang‑Biao Qiu Zhen chen Mao‑Yuan Zhao Chang‑Jun Ning Kai Pan Wei xu Tao li Su‑peng Lu Han Yi Rui‑Rui Fan Chang‑Qing Feng Rong zhang xiao‑yang Sun Qi An Hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping chen Yong‑Hao chen zeng‑Qi Cui An‑Chuan Fan Fan‑Zhen Feng min‑Hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑cheng He yang Hong Yi‑Wei Hu Han‑Xiong Huang Wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin ling Kang Bo li Gong li xiao li yang li Jie liu Rong liu Shu‑Bin liu Yi‑Na liu Guang‑Yuan Luan Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑Hui Song Kang Sun Zhi‑Xin Tan Sheng‑Da tang Jin‑cheng Wang peng‑cheng Wang Zhao‑Hui Wang Zhong‑Wei Wen xiao‑Guang Wu xuan Wu Cong Xia Yong‑Ji Yu Guo‑Hui zhang Hang‑Chang zhang lin‑Hao zhang Qi‑Wei zhang Xian‑peng zhang Yu‑liang zhang Yue zhang Zhi‑Yong zhang Zhi‑Hao Zhou Ke‑Jun Zhu Chong Zou 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 Physics Chinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China 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 North Night Vision Science and Technology(Nanjing)Research Institute Co.Ltd Nanjing 211106China 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 Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China China Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621900China 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 China Shipbuilding Trading Co. LtdBeijing 100044China

Neutron resonance imaging(NRI)has recently emerged as an appealing technique for neutron *** complexity surpasses that of conventional transmission imaging,as it requires a high demand for both a neutron source and ***,the progression of NRI technology has been sluggish since its inception in the 1980s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the China Spallation Neutron Source(CSNS)provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to ***-sensitive microchannel plates(MCP)have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions,high detection efficiency,and low *** this study,we report the development of a 10B-doped MCP detector,along with its associated electronics,data processing system,and NRI experiments at the *** heavy elements such as gold,silver,tungsten,and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1–100 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1–100 keV energy range can also be *** particular,results in the neutron energy range of dozens of keV(Aluminum)are reported here for the first time.

关键词： Neutron resonance imaging 10B doped MCP detector White neutron source Sample nuclide identification

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Centralized isolation of Helicobacter pylori from multiple centers and transport condition influences

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World Journal of Gastroenterology 2015年第3期21卷 944-952页

作者： Ya-Nan Gong You-ming li Ning-min yang Hong-zhang li Feng Guo Lang lin Qun-Ying Wang Jia-Kun zhang Zi-Zhong Ji Ji-Bo Mao Jun-liang Mao Zheng-Chao Shi Wu-Heng tang Xin-Jian Zhu Wei Shao xiao-Feng zhang Xing-Hua Wang Yue-Feng Tong Mi-Zu Jiang Guang-Lan chen Zhi-Yong Wang Hui-min Tu Guo-Fa Jiang Jian-Sheng Wu xu-peng chen Qiu-Long Ding Hong Ouyang Feng-Zhe Jin Yan-li xu Jian-Zhong zhang State Key Laboratory for Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and Prevention Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases The First Affiliated Hospital College of MedicineZhejiang University Zhiyuan Medical Inspection Institute Co. Ltd. Sanmen People’s Hospital The First People’s Hospital of xiaoshan District The First People’s Hospital of Cangnan Jinhua Municipal Central Hospital The First People’s Hospital of Pingyang The First Hospital of Jiaxing Zhoushan Hospital The First People’s Hospital of Wenling Rui’an People’s Hospital Maternal and Child Health Hospital of Zhoushan City Shangyu People’s Hospital People’s Hospital of Putuo District Zhoushan Hangzhou First People’s Hospital Qingtian People’s Hospital The First People’s Hospital of Yongkang The Children’s Hospital Zhejiang University School of Medicine lishui People’s Hospital The Affiliated Hospital of Hangzhou Normal University Wuxi No.4 Hospital Affiliated to Suzhou University Jinhua Wenrong Hospital The First Affiliated Hospital of Wenzhou Medical College Yueqing People’s Hospital Tiantai People’s Hospital lin’an people’s Hospital Rui’an City TCM Hospital Medical College of Hebei University of Engineering

AIM:To evaluate the efficacy of centralized culture and possible influencing ***:From January 2010 to July 2012,66452 patients with suspected Helicobacter pylori(***) infection from 26 hospitals in Zhejiang and Jiangsu Provinces in China underwent gastrointestinal *** mucosal biopsies were taken from the antrum for *** biopsies were transported under natural environmental temperature to the central laboratory in Hangzhou city and divided into three groups based on their transport time:5,24 and 48 *** culture results were reported after 72 h and the positive culture rates were analyzed by a χ2 *** additional 5736 biopsies from ***-positive patients(5646 rapid urease test-positive and 90 14C-urease breath test-positive) were also cultured for quality control in the central laboratory ***:The positive culture rate was 31.66%(21036/66452) for the patient samples and 71.72%(4114/5736) for the ***-positive quality control *** the 5 h transport group,the positiveculture rate was 30.99%(3865/12471),and 32.84%(14960/45553) in the 24 h transport *** contrast,the positive culture rate declined significantly in the 48 h transport group(26.25%; P lined from 36.67%(1462/3987) to 24.12%(1799/7459).When the temperature exceeded 24℃,the positive culture rate decreased significantly,especially in the 48 h transport group(23.17%).CONCLUSION:Transportation of specimens within 24 h and below 24℃ is reasonable and acceptable for centralized culture of multicenter *** samples.

关键词： Centralized isolation Helicobacter pylori Influenc

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Metatranscriptome of human lung microbial communities in a cohort of mechanically ventilated COVID-19 Omicron patients

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Signal Transduction and Targeted Therapy 2023年第12期8卷 5919-5930页

作者： lin Wang Jia-Bao Cao Bin-Bin Xia Yue-Juan li xuan zhang Guo-Xin Mo Rui-Juan Wang Si-Qi Guo Yu-Qing zhang Kun xiao Guang-Fa Zhu peng-Fei liu li-cheng Song Xi-Hui Ma Ping-Chao Xiang Jiang Wang Yu-Hong liu Fei Xie xu-Dong zhang Xiang-Xin li Wan-Lu Sun Yan Cao Kai-Fei Wang Wen-Hui zhang Wei-Chao Zhao peng Yan Ji-Chao chen Yu-Wei yang Zhong-Kuo Yu Jing-Si tang li xiao Jie-min Zhou li-Xin Xie Jun Wang College of Pulmonary&Critical Care Medicine 8th Medical Center of Chinese PLA General HospitalBeijing 100091China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Faculty of Biological Science and Technology Baotou Teacher’s CollegeBaotou 014030China Department of Respiratory Medicine PLA Strategic Support Force Medical CenterBeijing 100101China Department of Respiratory and Critical Care Medicine Beijing Anzhen HospitalCapital Medical UniversityBeijing Institute of HeartLung and Blood Vessel DiseasesBeijing 100029China Respiratory Research Institute Department of Pulmonary&Critical Care MedicineBeijing Key Laboratory of OTIRthe 8th Medical Center of Chinese PLA General HospitalBeijing 100091China Shougang hospital of Peking University Beijing 100144China Department of Respiratory Medicine Beijing Changping HospitalBeijing 102200China Department of Respiratory and Critical Care Medicine Beijing Institute of Respiratory Medicine and Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China Pulmonary research institute Senior Department of Respiratory and Critical Care Medicinethe 8th medical center of Chinese PLA general hospitalBeijing 100091China College of Pulmonary&Critical Care Medicine Chinese PLA General HospitalBeijing 100853China China Aerospace Science&Industry Corporation 731 hospital Beijing 100074China Department of Respiratory and Critical Care Medicine Aerospace Center HospitalBeijing 100049China Vision Medicals Center for Infectious Diseases Guangzhou 510700China

The Omicron variant of the severe acute respiratory syndrome coronavirus 2(SARS‑CoV‑2)infected a substantial proportion of Chinese population,and understanding the factors underlying the severity of the disease and fatality is valuable for future prevention and clinical *** recruited 64 patients with invasive ventilation for COVID-19 and performed metatranscriptomic sequencing to profile host transcriptomic profiles,plus viral,bacterial,and fungal content,as well as virulence factors and examined their relationships to 28-day mortality were *** addition,the bronchoalveolar lavage fluid(BALF)samples from invasive ventilated hospital/community-acquired pneumonia patients(HAP/CAP)sampled in 2019 were included for *** analysis revealed that all Omicron strains belong to BA.5 and BF.7 sub-lineages,with no difference in 28-day mortality between *** to HAP/CAP cohort,invasive ventilated COVID-19 patients have distinct host transcriptomic and microbial signatures in the lower respiratory tract;and in the COVID-19 non-survivors,we found significantly lower gene expressions in pathways related viral processes and positive regulation of protein localization to plasma membrane,higher abundance of opportunistic pathogens including bacterial Alloprevotella,Caulobacter,Escherichia-Shigella,Ralstonia and fungal Aspergillus sydowii and Penicillium *** analysis further revealed significant associations between host immune responses and microbial compositions,besides synergy within viral,bacterial,and fungal *** study presents the relationships of lower respiratory tract microbiome and transcriptome in invasive ventilated COVID-19 patients,providing the basis for future clinical treatment and reduction of fatality.

关键词： patients mortality prevention

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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

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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

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Ambient Temperature and Years of life Lost:A National Study in China

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The Innovation 2021年第1期2卷 3-10页

作者： Tao liu Chunliang Zhou Haoming zhang Biao Huang Yanjun xu lifeng lin lijun Wang Ruying Hu Zhulin Hou Yize xiao Junhua li xiaojun xu Donghui Jin mingfang Qin Qinglong Zhao Weiwei Gong peng Yin Yiqing xu Jianxiong Hu Jianpeng xiao Weilin zeng Xing li Siqi chen lingchuan Guo Zuhua Rong Yonghui zhang Cunrui Huang Yaodong Du Yuming Guo Shannon Rutherford min Yu Maigeng Zhou Wenjun Ma Guangdong Provincial Institute of Public Health Guangdong Provincial Center for Disease Control and PreventionGuangzhou511430China Hunan Provincial Center for Disease Control and Prevention Changsha410005China Yunnan Center for Disease Control and Prevention Kunming650022China Health Hazard Factors Control Department Jilin Provincial Center for Disease Control and PreventionChangchun130062China Guangdong Provincial Center for Disease Control and Prevention Guangzhou511430China The National Center for Chronic and Noncommunicable Disease Control and Prevention Beijing100050China Zhejiang Center for Disease Control and Prevention Hangzhou310051China School of Public Health Sun Yat-sen UniversityGuangzhou510080China Guangdong Provincial Climate Center Guangzhou510080China Department of Epidemiology and Preventive Medicine School of Public Health and Preventive MedicineMonash UniversityMelbourne3800Australia School of Medicine Griffith UniversityGold Coast4214Australia

Although numerous studies have investigated premature deaths attributable to temperature,effects of temperature on years of life lost(YLL)remain *** estimated the relationship between temperatures and YLL,and quantified the YLL per death caused by temperature in *** collected daily meteorological and mortality data,and calculated the daily YLL values for 364 locations(2013–2017 in Yunnan,Guangdong,Hunan,Zhejiang,and Jilin provinces,and 2006–2011 in other locations)in China.A time-series design with a distributed lag nonlinear model was first employed to estimate the location-specific associations between temperature and YLL rates(YLL/100,000 population),and a multivariate meta-analysis model was used to pool location-specific ***,YLL per death caused by temperatures was *** temperature and YLL rates consistently showed U-shaped associations.A mean of 1.02(95%confidence interval:0.67,1.37)YLL per death was attributable to *** temperature caused 0.98 YLL per death with most from moderate cold(0.84).The mean YLL per death was higher in those with cardiovascular diseases(1.14),males(1.15),younger age categories(1.31 in people aged 65–74 years),and in central China(1.34)than in those with respiratory diseases(0.47),females(0.87),older people(0.85 in people R75 years old),and northern China(0.64)or southern China(1.19).The mortality burden was modified by annual temperature and temperature variability,relative humidity,latitude,longitude,altitude,education attainment,and central heating *** caused substantial YLL per death in China,which was modified by demographic and regional characteristics.

关键词： TEMPERATURE YEARS OF liFE LOST MORTAliTY BURDEN DISTRIBUTED LAG NONliNEAR MODEL MULTIVARIATE META-ANALYSIS CHINA

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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

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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

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Chemoprophylaxis, diagnosis, treatments, and discharge management of COVID-19: An evidence-based clinical practice guideline(updated version)

引用

Military Medical Research 2020年第3期7卷 249-282页

作者： Ying-Hui Jin Qing-Yuan Zhan Zhi-Yong peng xue-Qun Ren xun-Tao Yin lin Cai Yu-Feng Yuan Ji-Rong Yue xiao-Chun zhang Qi-Wen yang Jianguang Ji Jian Xia Yi-Rong li Fu-Xiang Zhou Ya-Dong Gao Zhui Yu Feng xu ming-li Tu li-ming Tan min yang Fang chen xiao-Ju zhang Mei zeng Yu Zhu Xin-Can liu Jian yang Dong-Chi Zhao Yu-Feng Ding Ning Hou Fu-Bing Wang Hao chen Yong-Gang zhang Wei li Wen chen Yue-Xian Shi Xiu-Zhi yang xue-Jun Wang Yan-Jun Zhong ming-Juan Zhao Bing-Hui li lin-Lu Ma Hao Zi Na Wang Yun-Yun Wang Shao-Fu Yu Lu-Yao li Qiao Huang Hong Weng Xiang-Ying Ren li-Sha Luo Man-Ru Fan Di Huang Hong-yang xue lin-Xin Yu Jin-Ping Gao Tong Deng Xian-Tao zeng Hong-Jun li Zhen-Shun cheng xiao-Mei Yao Xing-Huan Wang Center for Evidence-Based and Translational Medicine Zhongnan Hospital of Wuhan UniversityWuhan 430071China National Clinical Research Center for Respiratory Diseases China-Japan Friendship HospitalBeijing 100029China Department of Pulmonary and Critical Care Medicine China-Japan Friendship HospitalBeijing 10029China Leishenshan Hospital in Wuhan Wuhan 430200China Department of Critical Care Medicine Zhongnan Hospital of Wuhan UniversityWuhan 430071China Institutes of Evidence-based Medicine and Knowledge Translation Henan UniversityKaifeng 475000HenanChina Department of Medical Imaging Guizhou Provincial People’s HospitalGuiyang 550002China Departments of Orthopedics Zhongnan Hospital of Wuhan UniversityWuhan 430071China Department of Hepatobiliary Surgery Zhongnan Hospital of Wuhan UniversityWuhan 430071China National Clinical Research Center for Geriatrics West China Hospital of Sichuan UniversityChengdu 610041China Department of Geriatrics West China Hospital of Sichuan UniversityChengdu 610041China Department of Radiology Zhongnan Hospital of Wuhan UniversityWuhan 430071China Department of Clinical Laboratory Peking Union Medical College Hospital(PUMCH)Peking Union Medical CollegeChinese Academy of Medical Sciences(CAMS)Beijing 100730China Center for Primary Health Care Research Lund University and Region Skåne25002 MalmöSweden Emergency Center Zhongnan Hospital of Wuhan UniversityWuhan 403371China Department of Allergology Zhongnan Hospital of Wuhan UniversityWuhan 430071China Department of Radiation and Medical Oncology Zhongnan Hospital of Wuhan UniversityWuhan 43071China Department of Critical Care Medicine Renmin Hospital of Wuhan UniversityWuhan 430060China Department of Emergency Medicine and Chest Pain Center Qilu Hospital of Shandong UniversityJinan 250002China Department of Respiratory and Critical Care Medicine Suizhou Central HospitalHubei University of MedicineSuizhou 441300HubeiChina Department of Clinic Pharmacy Second People’s Hospital of Huaihua Ci

The novel severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is the cause of a rapidly spreading illness,coronavirus disease 2019(COVID-19),affecting more than seventeen million people around the *** and treatment guidelines for clinicians caring for patients are *** the early stage,we have issued"A rapid advice guideline for the diagnosis and treatment of 2019 novel coronavirus(2019-nCoV)infected pneumonia(standard version)";now there are many direct evidences emerged and may change some of previous recommendations and it is ripe for develop an evidence-based *** formed a working group of clinical experts and *** steering group members proposed 29 questions that are relevant to the management of COVID-19 covering the following areas:chemoprophylaxis,diagnosis,treatments,and discharge *** searched the literature for direct evidence on the management of COVID-19,and assessed its certainty generated recommendations using the Grading of Recommendations,Assessment,Development and Evaluation(GRADE)*** were either strong or weak,or in the form of ungraded consensus-based ***,we issued 34 *** them,6 were strong recommendations for,14 were weak recommendations for,3 were weak recommendations against and 11 were ungraded consensus-based *** covered topics of chemoprophylaxis(including agents and Traditional Chinese Medicine(TCM)agents),diagnosis(including clinical manifestations,reverse transcription-polymerase chain reaction(RT-PCR),respiratory tract specimens,IgM and IgG antibody tests,chest computed tomography,chest X-ray,and CT features of asymptomatic infections),treatments(including lopinavirritonavir,umifenovir,favipiravir,interferon,remdesivir,combination of antiviral drugs,hydroxychloroquine/chloroquine,interleukin-6 inhibitors,interleukin-1 inhibitors,glucocorticoid,qingfei paidu decoction,lianhua qingwen granules/capsules,convalescent plasma,lung

关键词： COVID-19 SARS-CoV-2 Recommendation Chemoprophylaxis Diagnosis Treatment Discharge management Traditional Chinese medicine guideline

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