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人骨形成蛋白2真核表达载体的构建和体外表达

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中国组织工程研究与临床康复 2008年第50期12卷 9819-9822页

背景:骨形态发生蛋白2(bone morphogenetic protein2,BMP-2)是已知的所有生长因子中对骨的形成作用最强的生长因子,被认为是最具有前途的骨诱导物质。目的:构建人骨形成蛋白2真核表达载体并观察其体外表达情况。设计、时间及地点:自身... 详细信息

背景:骨形态发生蛋白2(bone morphogenetic protein2,BMP-2)是已知的所有生长因子中对骨的形成作用最强的生长因子,被认为是最具有前途的骨诱导物质。目的:构建人骨形成蛋白2真核表达载体并观察其体外表达情况。设计、时间及地点:自身对照实验,于2005-07/2006-05在华中科技大学同济医学院分子生物中心实验室完成。材料:pcDNA3.1(+)载体由华中科技大学同济医学院左石博士惠赠;成骨肉瘤组织由华中科技大学同济医学院附属协和医院骨科提供。方法:从人成骨肉瘤细胞中提取细胞总RNA,利用反转录-聚合酶链反应方法扩增获得人BMP-2基因cDNA,将基因片断重组到pGEM-T质粒中构建pGEM-T-hBMP-2重组质粒载体,转化到大肠杆菌DH5α后筛选阳性克隆,利用限制性酶切和DNA序列分析鉴定重组质粒。分别用RcoRI和NotI双酶切pGEM-T-hBMP-2质粒和pcDNA3.1真核表达载体,将克隆载体中人骨形成蛋白2基因重组到pcDNA3.1真核表达载体,提取质粒作酶切电泳、聚合酶链反应鉴定及DNA测序后,用脂质体体外转染小鼠骨髓基质细胞,反转录-聚合酶链反应检测BMP-2的表达。主要观察指标:①人骨肉瘤细胞总RNA反转录-聚合酶链反应结果。②重组质粒pGEM-T-hBMP-2和pcDNA3.1-hBMP-2的构建和酶切鉴定。③BMP-2在小鼠骨髓基质细胞内的表达。结果:人骨肉瘤细胞总RNA经反转录-聚合酶链反应扩增后,获得1.2kb条带。经酶切电泳、聚合酶链反应鉴定及DNA测序证实实验成功克隆BMP-2基因,重组质粒pcDNA3.1-hBMP-2构建正确;该重组质粒能在体外培养的小鼠骨髓基质细胞中有效表达BMP-2。结论:实验成功克隆人骨形成蛋白2基因并构建了此基因的真核表达载体。

关键词：骨形成蛋白2 真核表达载体基因克隆

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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三江源星星海水体中碳氮磷化学计量特征

四川农业大学学报 2016年第2期34卷 221-226页

作者：卢素锦武晓翠侯传莹袁坤宇周燕平乔娅杨洁孙树娇青海大学生态环境工程学院西宁810016

【目的】研究三江源星星海水体中碳氮磷化学计量特征,为揭示隆宝湖湿地的潜在富营养化进程提供依据。【方法】在星星海设置3个采样点采集水样,研究水体中总有机碳(TOC)、总氮(TN)、总磷(TP)的含量,对照《地表水环境质量标准》(GB3838-20... 详细信息

【目的】研究三江源星星海水体中碳氮磷化学计量特征,为揭示隆宝湖湿地的潜在富营养化进程提供依据。【方法】在星星海设置3个采样点采集水样,研究水体中总有机碳(TOC)、总氮(TN)、总磷(TP)的含量,对照《地表水环境质量标准》(GB3838-2002),采用超标率和超标倍数对水质进行了评价,分析了TOC与TN、TN与TP的相关性。【结果】星星海水体中TN含量为0.326 mg/L,NH4+-N含量为0.100 mg/L,NO3--N含量为0.109 mg/L,TP含量为0.014 mg/L,TOC含量为0.406 mg/L。对照《地表水环境质量标准》(GB3838-2002)TOC、TN、TP超过Ⅰ类水质标准,TN、TP超标倍数分别为0.63、0.4,超标率分别为66.7%、33.3%。相关性分析表明,TOC与TN、TN与TP的相关系数分别为R12﹦0.930 5,R22﹦0.693 2,说明碳、氮含量变化趋势相关性较好,氮、磷含量变化趋势相关性较差,水体中TN、TP来源不同。研究表明,C/N约为1.263,N/P约为23.28,表明有机质来源具有单一性,磷是星星海潜在营养化的限制因子。【结论】TN、TP的含量超过了《地表水环境质量标准》的Ⅰ类水质标准,达到了《地表水环境质量标准》的II类水质标准。星星海水体未达到富营养化状态。

关键词：星星海总有机碳总氮总磷相关性

基于药物体系的紫苏子特征图谱质量表征关联分析研究

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北京中医药大学学报 2015年第4期38卷 241-246,I0002页

作者：唐雪阳安琪孙道涵温静卢广英许舒娅黄亚婷李钢姜艳艳石任兵北京中医药大学中药学院北京国家中医药管理局中药经典名方有效物质发现重点实验室北京100102 首都医科大学中医药学院北京市教委中药质量控制技术工程中心

目的建立基于药物体系的紫苏子特征图谱质量表征关联分析方法与评价模式,有效、精准地评价紫苏子饮片质量。方法运用所建立的HPLC-PDA法表征紫苏子药物体系特征图谱质量,基于特征图谱中特征峰的数量及所属化学类型对15批紫苏子饮片进行... 详细信息

目的建立基于药物体系的紫苏子特征图谱质量表征关联分析方法与评价模式,有效、精准地评价紫苏子饮片质量。方法运用所建立的HPLC-PDA法表征紫苏子药物体系特征图谱质量,基于特征图谱中特征峰的数量及所属化学类型对15批紫苏子饮片进行质的表征,基于特征图谱中特征指标性成分木犀草素、芹菜素和迷迭香酸的含量及黄酮类(以木犀草素表征)、酚酸类(以迷迭香酸表征)的含量对15批紫苏子饮片进行量的表征,并基于基准饮片将15批紫苏子饮片质与量的表征结果分别进行关联性分析。结果以批号15的样品为基准饮片,紫苏子饮片特征图谱中共含有特征峰12个,其中黄酮类成分特征峰5个,酚酸类成分特征峰7个,15批饮片色谱图中均含有此12个特征峰。批号15、6、9、10、2、5、7样品特征指标性成分含量总体较高,批号6、12、11、7、4、14、10样品与基准饮片关联性最高,综合评价得出批号15、6、7、10、2、5、9、12、11、14样品优良度居前。结论对15批紫苏子饮片进行特征图谱质量表征,所建立的HPLC法简便、准确。所评价建立的基于药物体系的紫苏子特征图谱质量表征关联分析模式,关注了紫苏子饮片质量整体关联性与应用有效性,能有效精准地评价紫苏子饮片质量。

关键词：紫苏子特征图谱质量评价关联分析木犀草素芹菜素迷迭香酸

水貂IFN-α、IFN-β及IFN-γmRNA荧光定量RT-PCR检测方法的建立及应用

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动物医学进展 2015年第11期36卷 1-6页

作者：王洋胡博张海玲鲁荣光吕爽刘昊孙彦刚马凡舒赵建军张蕾薛向红史宁白雪徐淑娟范思宁凌明玉李欣彤闫喜军中国农业科学院特产研究所经济动物疫病研究室吉林长春130112 吉林农业大学动物科学技术学院吉林长春130118

为采用SYBR GreenⅠ染料建立检测水貂IFN-α、IFN-β和IFN-γmRNA荧光定量RT-PCR检测方法,根据GenBank中登录的MiIFN-α和MiIFN-β、MiIFN-γ和3-磷酸甘油脱氢酶(GAPDH)基因序列,分别设计合成特异性引物,通过RT-PCR扩增MiIFN-α、MiIFN-β、MiIFN-γ和MiGAPDH的基因片段,构建到pMD18-T载体中制备质粒标准品,建立了相应基因mRNA的荧光定量RT-PCR检测方法并建立标准曲线。结果表明,MiGAPDH、MiIFN-α和MiIFN-β和MiIFN-γ基因的Ct值与标准品稀释度在10拷贝质粒/μL^107拷贝质粒/μL内均呈良好的线性关系,相关系数(R2)均为1.00,熔解曲线均呈单一熔解峰,检测下限为10拷贝质粒/μL,重复性试验表明组内、组间变异系数均小于4.5%。临床样品检测结果表明水貂感染肠炎病毒后,MiIFN-α、MiIFN-β和MiIFNγ相对表达水平均在6d达到最高峰值,MiIFN-α相对表达量要比MiIFN-β和MiIFN-γ相对表达量高两个数量级,并且在感染期(4d^6d)MiIFN-α相对表达量明显提高。本研究为水貂IFN mRNA的定量分析提供了有效工具。

关键词： SYBR GreenⅠ 实时荧光定量PCR 水貂 α干扰素 β干扰素 γ干扰素

基于药物体系质量评价模式的蒲黄质量表征关联分析研究

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北京中医药大学学报 2015年第6期38卷 393-399,410,I0002页

作者：李钢许舒娅赵丽敏卢广英孙道涵王亚利唐雪阳彭平姜艳艳石任兵北京中医药大学中药学院国家中医药管理局中药经典名方有效物质发现重点实验室北京100102 北京市教委中药质量控制技术工程中心

目的建立基于药物体系的蒲黄饮片质量表征及关联分析方法,全面评价蒲黄饮片质量。方法采用HPLC同时测定16批蒲黄饮片中香蒲新苷、异鼠李素-3-O-新橙皮苷、异鼠李素、β-谷甾醇、豆甾醇等5种主要有效指标性成分及其和的含量。采用三氯化... 详细信息

目的建立基于药物体系的蒲黄饮片质量表征及关联分析方法,全面评价蒲黄饮片质量。方法采用HPLC同时测定16批蒲黄饮片中香蒲新苷、异鼠李素-3-O-新橙皮苷、异鼠李素、β-谷甾醇、豆甾醇等5种主要有效指标性成分及其和的含量。采用三氯化铁-铁氰化钾显色法测定蒲黄中以黄酮类为主的酚类含量,香草醛-高氯酸显色法测定蒲黄总甾醇含量,并使用非关联系数δ、非关联度、关联度等相关概念表征各批号蒲黄饮片与基准饮片质量关联性。结果批号7、3、5、4、10、13有效指标性成分总体含量高于基准批号8,批号5、7、6、10、1、13与基准批号8关联性最高,综合评价得出批号7、5、10、13优良度居前。结论基于药物体系质量评价模式,通过将有效指标性成分含量、组成大类总含量及其相对比值与具有确切药效的基准饮片的关联度结合分析,可综合精准评价蒲黄饮片质量优次,为蒲黄饮片筛选、药物原料质量控制及应用提供了依据,同时为中药质量评价提供了方法学及其应用借鉴。

关键词：蒲黄质量评价关联分析香蒲新苷异鼠李素-3-O-新橙皮苷异鼠李素 β-谷甾醇豆甾醇

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太赫兹自由电子激光的受激饱和实验

物理学报 2018年第8期67卷 82-90页

作者：黎明杨兴繁许州束小建鲁向阳黄文会王汉斌窦玉焕沈旭明单李军邓德荣徐勇柏伟冯第超吴岱肖德鑫王建新罗星周奎劳成龙闫陇刚林司芬张鹏张浩和天慧潘清李相坤李鹏刘宇杨林德刘婕张德敏李凯陈亚男中国工程物理研究院应用电子学研究所绵阳621900 四川省国防科技工业办公室成都610051 北京应用物理与计算数学研究所北京100094 北京大学重离子物理研究所北京100871 清华大学工程物理系北京100084

中国工程物理研究院基于半导体光阴极高压直流电子枪和超导直线加速器的高平均功率太赫兹自由电子激光达到了受激饱和,并实现了太赫兹光输出频率可调.在1.99,2.41和2.92 THz三个频率点上进行测试,测得太赫兹宏脉冲内平均功率大于10 W,... 详细信息

中国工程物理研究院基于半导体光阴极高压直流电子枪和超导直线加速器的高平均功率太赫兹自由电子激光达到了受激饱和,并实现了太赫兹光输出频率可调.在1.99,2.41和2.92 THz三个频率点上进行测试,测得太赫兹宏脉冲内平均功率大于10 W,最高达17.9 W.本文介绍了太赫兹自由电子激光装置的主要组成部分及受激饱和实验的结果.

关键词：自由电子激光太赫兹光光阴极高压直流电子枪射频超导加速器

Mortality and Morbidity of Extremely Low Birth Weight Infants in the Mainland of China： A Multi-center Study

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Chinese Medical Journal 2015年第20期128卷 2743-2750页

作者： Hui-Jia Lin Li-Zhong Du Xiao-lu Ma Li-Ping Shi Jia-Hua Pan Xiao-Mei Tong Qiu-Ping Li Jian-Guo Zhou Bing Yi Ling Liu Yun-Bing Chen Qiu-Fen Wei Hui-Qing Wu Mei Li Cui-Qing Li Xi-Rong Gao Shi-Wen Xia Wen-Bin Li Chao-Ying Ya Ling He kun Liang Xiao-Yu Zhou shu-Ping Han Qin Lyu Yin-Ping Qiu Wen Li Dong-Mei Chen Hong-Ru lu Xiao-Hong Liu Hong Liu Zhen-Lang Lin Li Liu Jia-Jun Zhu Hong Xiong Shao-Jie Yue Si-Qi Zhuang Department of Neonatal Intensive Care Unit Children's Hospital of Zhejiang University School of Medicine Hangzhou Zhejiang 310053 China Department of Neonatology Anhui Provincial Hospital Hefei Anhui 230001 China Department of Pediatrics Peking University Third Hospital Beijing 100191 China Department of Neonatology BaYi Children's Hospital of the General Military Hospital of Beijing People's Liberation Army Beijing 100000 China Department of Neonatology Children's Hospital of Fudan University Shanghai 200032 China Department of Neonatology Gansu Provincial Maternity and Children-care Hospital Lanzhou Gansu 730050 China Department of Neonatotogy Guiyang Maternal and Child Health Care Hospital Guiyang Guizhou 550003 China Department of Neonatology Women and Children Hospital of Guangdong Province Guangzhou Guangdong 510010 China Department of Neonatology Guangxi Maternal and Child Health Hospital Nanning Guangxi 530003 China Department of Neonatology The Third Affiliated Hospital of Guangzhou Medical University Guangzhou Guangdong 510150 China Department of Neonatology Harbin Children's Hospital Harbin Heilongjiang 150010 China Department of Neonatology Children's Hospital of Hebei Province Shijiazhuang Hebei 050031 China Department of Neonatology Hunan Children's Hospital Changsha Hunan 410007 China Department of Neonatology Hubei Maternity and Child Heath Hospital Wuhan Hubei 430070 China Department of Pediatrics Tongji Hospital Affiliated to Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China Department of Neonatology The First Hospital of Jilin University Changchun Jilin 130021 China Department of Neonatology Jiangxi Provincial Children's Hospital Nanchang Jiangxi 330006 China Department of Pediatric First Affiliated Hospital of Kunming Medical University Kunming Yunnan 650032 China Department of Neonatotogy Nanjing Children's Hospital of Nanjing Medical University Nanjing Jiangsu 320100 China De

Background： With the progress ofperinatal medicine and neonatal technology, more and more extremely low birth weight （ELBW） survived all over the world. This study was designed to investigate the short-term ontcomes of ELBW infants during their Neonatal Intensive Care Unit （NICU） stay in the mainland of China. Methods： All infants admitted to 26 NICUs with a birth weight （BW）〈1000 g were included between January 1,2011 and December 31,2011. All the data were collected retrospectively from clinical records by a prospectively designed questionnaire. The data collected from each NICU transmitted to the main institution where the results were aggregated and analyzed. Categorical variables were performed with Pearson Chi-square test. Binary Logistic regression analysis was used to detect risk factors. Results： A total of 258 ELBW infants were admitted to 26 NICUs, of whom the mean gestational age （GA） was 28.1 ± 2.2 weeks, and the mean BW was 868 ± 97 g. The overall survival rate at discharge was 50.0%. Despite aggressive treatment 60 infants （23.3%） died and another 69 infants （26.7%） died after medical care withdrawal. Furthermore, the survival rate was significantly higher in coastal areas than inland areas （53.6% vs. 35.3%, P = 0.019）. BW 〈750 g and GA 〈28 weeks were the largest risk factors, and being small for gestational age was a protective factor related to mortality. Respiratory distress syndrome was the most common complication. The incidence of patent ductus arteriosus, intraventricular hemorrhage, periventricular leukomalacia, bronchopulmonary dysplasia, retinopathy of prematurity was 26.2%, 33.7%, 6.7%, 48.1%, and 41.4%, respectively. Ventilator associated pneumonia was the most common hospital acquired infection during hospitalization. Conclusions： Our study was the first survey that revealed the present status of ELBW infants in the mainland of China. The mortality and morbidity of ELBW infants remained high as compared to other developed countries.

关键词： Extremely Low Birth Weight Infant Mortality National Survey

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