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Study of the response of 1.B-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 {1. {2. 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&{1.({2.)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear science and {1. University of Science and Technology of ChinaHefei 230027China state {1. {2. 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 {1. {2. of Nuclear Physics and technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China key {1. 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 {1.s Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.1.B-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 1. mol%1.B 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 1. 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 1.B-doped MCP Neutron response Wide-energy range neutrons

1.B-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 {1. {2. 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 {1. University of Science and Technology of ChinaHefei 230027China state {1. {2. of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China North Night Vision science and {1.({2.)Research Institute Co.Ltd Nanjing 211106China department of Modern Physics University of Science and Technology of ChinaHefei 230026China state {1. {2. of Nuclear Physics and technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China key {1. 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 {1.s 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 1.80s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the{1. 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 1.B-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 1.1.0 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1.1.0 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 1.B doped MCP detector White neutron source Sample nuclide identification

Variations in length of stay among survived very preterm infants admitted to Chinese neonatal intensive care units

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World Journal of Pediatrics 2022年第2期18卷 126-134页

作者： Min Zhang Yan-Chen Wang Jin-xing Feng Ai-zhen {2. jing-Wei Huang Si-yuan jiang xin-{2.e Gu jian-Hua sun {2.n cao Wen-{12. Zhou Shoo KLee Li-Li Wang Rong Yin Division of Neonatology The First Affiliated Hospital of Anhui Medical UniversityNo.218Jixi RoadShushan DistrictHefei 230022China NHC key {1. of Neonatal Diseases Fudan UniversityChildren's Hospital of Fudan UniversityShanghai 201102China Division of Neonatology Shenzhen Children's HospitalShenzhen 518038China Division of Neonatology.Children's Hospital of Fudan university 399 Wanyuan RoadMinhang DistrictShanghai 201102China Division of Neonatology Shanghai Children's Medical CenterShanghai Jiao Tong University School of MedicineShanghai 200127China Maternal-Infants Care Research Centre and department of Pediatrics Mount Sinai HospitalTorontoON M5G 1X5.Canada Professor Emeritus University of Toronto.TorontoON M5T 3M7Canada

Background This study aimed to describe length of stay(LOS)to discharge and site variations among very preterm infants(VPIs)admitted to 57 Chinese neonatal intensive care units(NICUs)and to investigate factors associated with LOS for *** This retrospective multicenter cohort study enrolled all infants2.weeks’gestation and admitted to 57 NICUs which had participated in the Chinese Neonatal Network,within 7 days after birth in *** criteria included major congenital anomalies,NICU deaths,discharge against medical advice,transfer to non-participating hospitals,and missing discharge *** multivariable linear models were used to estimate the association of infant characteristics and *** A total of 6580 infants were included in our *** overall median LOS was 46 days[interquartile range(IQR):35-60],and the median corrected gestational age at discharge was 36 weeks(IQR:35-38).LOS and corrected gestational age at discharge increased with decreasing gestational *** median corrected gestational age at discharge for infants at 2. weeks,2. weeks,2. weeks,2.-2. weeks,and 2.-31.weeks were 41.weeks,39 weeks,38 weeks,37 weeks and 36 weeks,*** site variation of LOS was identified with observed median LOS from 33 to 71.days in different *** The study provided concurrent estimates of LOS for VPIs which survived in Chinese NICUs that could be used as references for medical staff and *** variation of LOS independent of infant characteristics existed,indicating variation of care practices requiring further investigation and quality improvement.

关键词： Length of stay to discharge home Neonatal intensive care Preterm Risk factors

基于白光中子源的^(1.7)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2.块六棱BaF_(2.晶体和1.块五棱BaF_(2.晶体构成了外径2. cm,内径1. 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1.7Au(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1.7Au俘获反应的产额,利用SAMMY程序拟合得到了^(1.7)Au在1.1.0 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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Measurement of the ^(2.2.Th(n,f)cross section in the 1.2.0 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 {2.g-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-{2. Tan jing-yu Tang {2.-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 {1. {2. of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230027China key {1. of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear science and {1. University of Science and Technology of ChinaHefei 230027China state {1. {2. of Nuclear Physics and technology School of PhysicsPeking UniversityBeijing 100871China state {1. {2. 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 {1.s Beijing 100049China department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China

The ^(2.2.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^(2.2.Th(n,f)cross sec-tion relative to^(2.5)U in the 1.2.0 MeV range was performed at the{1. Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(2.2.Th and^(2.5)U fission cells were measured in the single-bunch *** 2.2.h/2.5U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2.2. MeV range and 3.6–6.2.for energies in the 2.–2.0 MeV ***^(2.2.Th(n,f)cross section was obtained by introducing the standard cross section of^(2.5)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 2.2.h fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 2.2.h fission resonances were observed in the 1.3 MeV *** present results provide^(2.2.Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 2.2.h(n f)cross section Fast-fission ionization chamber Back-n white neutron source

A draft sequence of the rice (Oryza sativa ssp. indica) genome

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Chinese science Bulletin 2001年第23期46卷 1937-1942页

作者： yu Jun, HU Songnian, WANG Jun,LI Songgang WONG Ka-Shu Gane, LIU Bin,DENG Yajun, DAI Li, ZHOU Yan,ZHANG Xiuqing, cao Mengliang, LIU jing,sun jiandong , TANG Jiabin, CHEN Yanjiong,HUANG Xiaobing, LIN Wei, YE Chen, TONG Wei,CONG Lijuan, GENG jianing, HAN yujun, LI Lin,LI Wei, HU Guangqiang, HUANG Xiangang,LI Wenjie, LI jian, LIU Zhanwei, LI Long,LIU jianping, Ql Qiuhui, LIU Jinsong, LI Li,WANG Xuegang, LU Hong, WU Tingling,ZHU Miao, Nl Peixiang, HAN Hua, DONG Wei,REN Xiaoyu, FENG Xiaoli, GUI Peng,LI Xianran, WANG hao, XU xin, ZHAI Wenxue,XU Zhao, ZHANG Jinsong, HE Sijie,ZHANG jianguo, XU Jichen, ZHANG Kunlin,zhenG Xianwu, DONG jianhai, ZENG Wanyong,TAO Lin, CHEN Xuewei, HE Jun, LIU Daofeng,TIAN Wei, TIAN Chaoguang, XIA Hongai,LI Gang, GAO Hui, LI Ping, CHEN Wei ,WANG Xudong, ZHANG Yong, HU jianfei,WANG jing, LIU Song, YANG jian,ZHANG Guangyu, XIONG yuqing, LI Zhijie,MAO Long, ZHOU Chengshu, ZHU zhen,CHEN Runsheng, hao Bailin,zhenG Weimou, CHEN Shouyi, QUO Wei,LI Guojie, LIU Siqi, HUANG Guyang,TAO Ming, WANG jian, ZHU Lihuang,yuan Longping& YANG HuanmingBeijing Genomics Institute/Center of Genomics & Bioinformatics, Chinese Academy of sciences, Beijing 101300, china Hangzhou Genomics Institute/Institute of Bioinformatics of Zhejiang university/key laboratory of Bioinformatics of Zhejiang Province, Hangzhou 310007, china Institute of Genetics, Chinese Academy of sciences, Beijing 100101, china National Hybrid Rice R & D Center, Changsha 410125, china laboratory of Bioinformatics, Institute of Biophysics, Chinese Academy of sciences, Beijing 100101, china College of Life sciences, Peking university, Beijing 100871, china Institute of Theoretical Physics, Chinese Academy of sciences, Beijing 1Q0080, china Digital china Ltd., Beijing 100080, china Institute of Computing technology, Chinese Academy of sciences, Beijing 100080, china Medical College, Xi’an Jiaotong university, Xi’an 710061, chinaThese authors contributed equally to this work.Corresponding author.Corresponden Beijing Genomics Institute/Center of Genomics & Bioinformatics Chinese Academy of Sciences Beijing China Hangzhou Genomics Institute/Institute of Bioinformatics of Zhejiang {1./{2. laboratory of Bioinformatics of Zhejiang Province Hangzhou China College of Life sciences Peking University Beijing China Medical College Xi’an Jiaotong University Xi’an China Institute of Genetics Chinese Academy of Sciences Beijing China laboratory of Bioinformatics Institute of Biophysics Chinese Academy of Sciences Beijing China National Hybrid Rice R & D Center Changsha China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Digital china Ltd. Beijing China Institute of Computing technology Chinese Academy of Sciences Beijing China

The sequence of the rice genome holds fundamental information for its biology, including physiology, genetics, development, and evolution, as well as information on many beneficial phenotypes of economic significance. Using a "whole genome shotgun" approach, we have pro-duced a draft rice genome sequence of Oryza sativa ssp. in-dica, the major crop rice subspecies in china and many other regions of Asia. The draft genome sequence is constructed from over 4.3 million successful sequencing traces with an accumulative total length of 2.1..9 Mb. The initial assembly of the non-redundant sequences reached 409.76 Mb in length, based on 3.30 million successful sequencing traces with a total length of 1.97.4 Mb from an indica variant cultivar 93-1., giving an estimated coverage of 95.2.% of the rice genome with an average base accuracy of higher than 99%. The coverage of the draft sequence, the randomness of the sequence distribution, and the consistency of BIG-ASSEM-BLER, a custom-designed {1. package

关键词： rice genome draft sequences.

2.1.—2.2.年1.0例儿童肺炎链球菌脑膜炎临床流行病学多中心研究

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中国当代儿科杂志 2024年第2期26卷 131-138页

作者：王彩云许红梅刘钢刘静俞蕙陈必全郑帼舒敏杜丽君徐志伟黄丽素李海波汪东白松婷单庆文朱春晖田健美郝建华林爱伟林道炯吴谨准张新华曹清陶仲宾陈源朱国龙薛萍汤正珍苏学文曲政海赵仕勇庞琳邓慧玲舒赛男陈英虎浙江大学医学院附属儿童医院感染科浙江杭州310052 重庆医科大学附属儿童医院感染科重庆400014 首都医科大学附属北京儿童医院感染科北京100045 湖南省儿童医院感染科湖南长沙410007 复旦大学附属儿科医院感染科上海201102 安徽省儿童医院感染科安徽合肥230022 南京医科大学附属儿童医院神经科江苏南京210008 四川大学华西第二医院儿科四川成都610044 山西省儿童医院神经内科山西太原030006 温州医科大学附属第二医院/育英儿童医院普儿科浙江温州325027 上海交通大学医学院附属新华医院感染科上海200092 吉林大学第一医院儿科门诊吉林长春130061 西安交通大学附属儿童医院陕西西安710002 郑州大学第一附属医院儿科河南郑州450052 广西医科大学第一附属医院儿科广西南宁530021 江西省儿童医院感染科江西南昌330006 苏州大学附属儿童医院感染科江苏苏州215002 河南开封市儿童医院感染科河南开封475000 山东大学儿童院感染科山东济南250022 海南省妇幼保健院感染科海南海口571103 厦门大学附属妇女儿童医院儿科福建厦门361003 山西省儿童医院新生儿科山西太原030006 上海交通大学医学院附属上海儿童医学中心感染科上海200127 兰州大学第一医院儿科甘肃兰州730013 河北医科大学第二医院儿科河北石家庄050004 青海省妇女儿童医院感染消化科青海西宁810007 太原市妇幼保健院儿内科山西太原030012 遵义市第一人民医院儿科贵州遵义563099 内蒙古自治区人民医院儿科内蒙古呼和浩特750306 青岛大学附属医院儿科山东青岛266003 杭州市儿童医院感染科浙江杭州310005 首都医科大学附属北京地坛医院儿科北京100102 西安市中心医院儿科陕西西安710004 华中科技大学同济医学院附属同济医院儿科湖北武汉430030

目的研究中国儿童肺炎链球菌脑膜炎(pneumococcal meningitis,PM)的临床特征、转归和分离菌株肺炎链球菌(Streptococcus pneumoniae,SP)的药物敏感性。方法回顾性分析2.1.年1.—2.2.年1.月全国33家三级甲等医院1.0例<1.岁的PM住院患儿... 详细信息

目的研究中国儿童肺炎链球菌脑膜炎(pneumococcal meningitis,PM)的临床特征、转归和分离菌株肺炎链球菌(Streptococcus pneumoniae,SP)的药物敏感性。方法回顾性分析2.1.年1.—2.2.年1.月全国33家三级甲等医院1.0例1.岁的PM住院患儿的临床信息、实验室资料和微生物学资料。结果1.0例PM患儿中,男1.3例,女57例;年龄1. d至1.岁,其中3月龄至1.9例(68.1.)。脑脊液培养分离SP菌株95例(59.4%),血培养分离SP菌株57例(35.6%)。脑脊液宏基因组二代测序和脑脊液SP抗原检测阳性率分别为40%(35/87)、2.%(2.0}78)。55例(34.4%)患儿存在1.或多个化脓性脑膜炎高危因素;1.3例(70.6%)患儿有1.或多个颅外感染病灶;1.例(1..3%)有明确基础疾病。临床症状以发热最常见(1.7例,91.9%),其次是精神萎靡(98例,61.3%)、呕吐(61.,38.1.)等。69例(43.1.)患儿住院期间发生颅内并发症,常见并发症为硬膜下积液和/或积脓(43例,2..9%)、脑积水(2.例,1..0%)、脑脓肿(2.例,1..4%)、脑出血(8例,5.0%)。硬膜下积液和/或积脓和脑积水主要发生在1.患儿,分别为91.(39/43)、83%(2./2.)。SP菌株对万古霉素(1.0%,75/75)、利奈唑胺(1.0%,56/56)、厄他培南(1.0%,6/6)完全敏感;对左氧氟沙星(81.,2./2.)、莫西沙星(82.,1./1.)、利福平(96%,2./2.)和氯霉素(91.,2.0}2.)敏感率高;对青霉素(1.%,1./68)、克林霉素(6%,1.1.)敏感率低;对红霉素完全耐药(1.0%,31.31.。痊愈和好转出院率分别为2..5%(36/1.0)、66.2.(1.6/1.0);1.例(1..3%)出现不良结局。结论儿童PM多见于3月龄至1.患儿,发热是PM患儿最常见的临床表现,硬膜下积液和/或积脓、脑积水是最常见的并发症。脑脊液非培养检测方法有助于提高病原菌检出率。超过1.%PM患儿出现不良结局。SP菌株对万古霉素、利奈唑胺、厄他培南、左氧氟沙星、莫西沙星、利福平、氯霉素敏感率高。

关键词：肺炎链球菌脑膜炎流行病学多中心研究儿童

Interfacial photoconductivity effect of type-Ⅰ and type-Ⅱ Sb2.e3/Si heterojunctions for THz wave modulation

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Chinese Physics B 2023年第11期32卷 82-86页

作者：曹雪芹黄媛媛席亚妍雷珍王静刘昊楠史明坚韩涛涛张蒙恩徐新龙 Shaanxi Joint laboratory of Graphene State Key Laboratory Incubation Base of Photoelectric Technology and Functional MaterialsInternational Collaborative Center on Photoelectric Technologyand Nano Functional MaterialsInstitute of Photonics&Photon-TechnologyNorthwest UniversityXi’an 710069China

An in-depth understanding of the photoconductivity and photocarrier density at the interface is of great significance for improving the performance of optoelectronic devices. However, extraction of the photoconductivity and photocarrier density at the heterojunction interface remains elusive. Herein, we have obtained the photoconductivity and photocarrier density of 1.3 nm Sb2.e3/Si(type-Ⅰ heterojunction) and 90 nm Sb2.e3/Si(type-Ⅱ heterojunction) utilizing terahertz(THz) time-domain spectroscopy(THz-TDS) and a theoretical Drude model. Since type-Ⅰ heterojunctions accelerate carrier recombination and type-Ⅱ heterojunctions accelerate carrier separation, the photoconductivity and photocarrier density of the type-Ⅱ heterojunction(2.0}8×1.^(4)S·m^(-1.,1.5 × 1.^(1.)cm^(-3)) are higher than those of the type-Ⅰ heterojunction(1..8×1.^(4)S·m^(-1.,0.8×1.^(1.)cm^(-3)). These results demonstrate that a type-Ⅱ heterojunction is superior to a type-Ⅰ heterojunction for THz wave modulation. This work highlights THz-TDS as an effective tool for studying photoconductivity and photocarrier density at the heterojunction interface. In turn, the intriguing interfacial photoconductivity effect provides a way to improve the THz wave modulation performance.

关键词： photoconductivity Sb2.Se3/Si heterojunctions THz-TDS Drude model

Prevalence, awareness, treatment, and control of hypertension in the non-dialysis chronic kidney disease patients

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Chinese Medical Journal 2013年第12期126卷 2276-2280页

作者： zhenG Ying CAI Guang-yan CHEN Xiang-mei FU Ping CHEN jiang-hua DING Xiao-qiang {2. Xue-qing LIN Hong-li LIU jian XIE Ru-juan WANG Li-ning NI Zhao-hui LIU Fu-you YIN Ai-ping xinG Chang-ying WANG Li SHI Wei LIU jian-she HE Ya-ni DING Guo-hua LI Wen-ge WU Guang-li MIAO Li-ning CHEN Nan SU zhen MEI Chang-lin Zhao Jiu-yang GU Yong BAI {2.n-kai LUO Hui-min LIN Shan CHEN Meng-hua gong Li YANG Yi-bin YANG Xiao-ping LI Ying WAN jian-xin WANG Nian-song LI Hai-ying XI Chun-sheng hao Li XU Yan FANG jing-ai LIU Bi-cheng LI Rong-shan WANG Rong ZHANG jing-hong WANG jian-qin LOU Tan-qi Shao Feng-min MEI Feng LIU Zhi-hong yuan Wei-jie sun Shi-ren ZHANG Ling ZHOU Chun-hua CHEN Qin-kai JIA Shun-lian gong Zhi-feng GUAN Guang-ju XIA Tian ZHONG Liang-bao department of Nephrology State key Laboratory of Kidney Disease Chinese PLA General Hospital Beijing 100853 China Nephrology Institute of the Chinese People's Liberation Army Chinese People's Liberation Army Key Laboratory of Nephrology Beijing 100853 China department of Nephrology West China Hospital of Sichuan University Chengdu Sichuan 610041 China department of Nephrology First Affiliated Hospital School of Medicine Zhejiang University Hangzhou Zhejiang 310003 China department of Nephrology Zhongshan Hospital Fudan University Shanghai 200032 China department of Nephrology First Affiiated Hospital of Sun Yat-sen University Guangzhou Guangdong 510080 China department of Nephrology First Affiliated Hospital of Dalian Medical University Dalian Liaoning 116011 China department of Nephrology First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang 830054 China department of Nephrology First Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China department of Nephrology First Afftiated Hospital of China Medical University Shenyang Liaoning 110001 China department of Nephrology Renji Hospital School of Medicine Shanghai Jiao Tong University Shanghai 200025 China department of Nephrology Second Xiangya Hospital Central South University Changsha Hunan 410000 China department of Nephrology First Affiliated Hospital of Medical College Xi'an Jiaotong University Xi'an Shaanxi 710061 China department of Nephrology First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital) Nanjing Jiangsu 210029 China department of Nephrology Sichuan Provincial People's Hospital Chengdu Sichuan 610072 China department of Nephrology Guangdong Provincial People's Hospital Guangzhou Guangdong 510030 China department of Nephrology Affliated Xiehe Hospital Tongji Medical College Huazhong Science and Technology University Wuhan Hubei 430022 China department of Nephrology Daping Hospital Third Military Medi

Background Data on the epidemiology of hypertension in Chinese non-dialysis chronic kidney disease （CKD） patients are *** aim of the present study was to investigate the prevalence,awareness,treatment,and control of hypertension in the non-dialysis CKD patients through a nationwide,multicenter study in *** The survey was performed in 61.tertiary hospitals in 31.provinces,municipalities,and autonomous regions in{2. （except Hong Kong,Ma{1.,and Taiwan）.Trained physicians collected demographic and clinical data and measured blood pressure （BP） using a standardized *** was defned as systolic BP ≥1.0 mmHg and/or diastolic BP ≥90 mmHg,and/or use of antihypertensive *** 〈1.0/90 mmHg and 〈1.0/80 mmHg were used as the 2.thresholds of hypertension *** multivariate logistic regression with adjustment for sex and age,we analyzed the association between CKD stages and uncontrolled hypertension in non-dialysis CKD *** The analysis included 892. non-dialysis CKD *** prevalence,awareness,and treatment of hypertension in non-dialysis CKD patients were 67.3%,85.8%,and 81.0%,*** hypertensive CKD patients,33.1. and 1..1. had controlled BP to 〈1.0/90 mmHg and 〈1.0/80 mmHg,*** successive CKD stages,the prevalence of hypertension in non-dialysis CKD patients increased,but the control of hypertension decreased （P〈0.001..When the threshold of BP 〈1.0/80 mmHg was considered,the risk of uncontrolled hypertension in CKD 2.3a,3b,4,and 5 stages increased 1.3,1.4,1.4,2.5,and 4.0 times compared with CKD 1.stage,respectively （P〈0.05）.Using the threshold of 〈1.0/90 mmHg,the risk of uncontrolled hypertension increased in advanced stages （P〈0.05）.Conclusions The prevalence of hypertension Chinese non-dialysis CKD patients was high,and the hypertension control was *** successive CKD stages,the risk of uncontrolled hypertension increased.

关键词： non-dialysis chronic kidney disease chronic kidney disease stages hypertension epidemiology