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

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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First experimental constraints on WIMP couplings in the effective field theory framework from CDEX

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Science China(Physics,Mechanics & Astronomy) 2021年第8期64卷 15-22页

作者： Yi Wang zhi Zeng Qian yue liTao Yang KeJun Kang yuanjing li Mehment Agartioglu HaiPeng An JianPing Chang jingHan Chen yunHua Chen JianPing cheng cheng Yi Chiang WenHan Dai zhi Deng ChangHao Fang XinPing Geng Hui Gong QiuJu Guo Xuyuan Guo HongJian He li He ShengMing He jinWei Hu TuChen Huang HanXiong Huang HaiTao Jia liPing Jia Xi Jiang HauBin li JianMin li jin li MingXuan li RenMingJie li Xia li yuLan li Bin liao FongKay lin ShinTed lin ShuKui liu Yandong liu yu liu yuanyuan liu Zhongzhi liu Hao Ma yuCai Mao Qiyuan nie jinHua ning Hui Pan ningChun Qi Jie Ren XiChao Ruan ChangSong Shang Vivek Sharma Ze She Lakhwinder Singh Monoj Kumar Singh TianXi Sun ChangJian Tang WeiYou Tang Yang Tian GuangFu Wang li Wang Qing Wang yu Chen Wang yunXiang Wang zhen Wang Henry Tsz-King Wong ShiYong Wu yucheng Wu HaoYang Xing Yin Xu Tao xue yuLu Yan Nan Yi ChunXu yu HaiJun yu JianFeng yue Ming Zeng BingTao zhang Lei zhang FengShou zhang zhenyu zhang KangKang Zhao MingGang Zhao JiFang Zhou ZuYing Zhou jingJun Zhu Key Laboratory of Particle and Radiation Imaging(Ministry of Education) Department of Engineering PhysicsTsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Institute of Physics Academia SinicaTaipei 11529China NUCTECH Company Beijing 100084China YaLong River Hydropower Development Company Chengdu 610051China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China College of Physics Sichuan UniversityChengdu 610065China School of Physics Peking UniversityBeijing 100871China Sino-French Institute of Nuclear and Technology Sun Yet-sen UniversityZhuhai 519082China Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China Department of Physics Banaras Hindu UniversityVaranasi 221005India Department of Physics Beijing Normal UniversityBeijing 100875China School of Physics Nankai UniversityTianjin 300071China

We present weakly interacting massive particles(WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment(CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level(C.L.) and improve over the current bounds in the low mχregion. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m_(χ)<6 GeV/c^(2) region.

关键词： WIMP EFT CDEX dark matter annual modulation

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Performances of a prototype point-contact germanium detector immersed in liquid nitrogen for light dark matter search

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Science China(Physics,Mechanics & Astronomy) 2019年第3期62卷 58-65页

作者： Hao Jiang liTao Yang Qian yue KeJun Kang JianPing cheng yuanjing li Henry Tsz-King Wong M.A?artio?lu HaiPeng An JianPing Chang jingHan Chen yunHua Chen zhi Deng Qiang Du Hui Gong li He jin Wei Hu Qingdong Hu HanXiong Huang liPing Jia HauBin li Hong li Jian Min li jin li Xia li xueQian li yuLan li Bin liao FongKay lin ShinTed lin ShuKui liu Yandong liu yuanyuan liu Zhongzhi liu Hao Ma jingLu Ma Hui Pan Jie Ren XiChao Ruan B.Sevda Vivek Sharma ManBin Shen Lakhwinder Singh Monoj Kumar Singh TianXi Sun ChangJian Tang WeiYou Tang Yang Tian GuangFu Wang JiMin Wang li Wang Qing Wang Yi Wang ShiYong Wu yucheng Wu HaoYang Xing Yin Xu Tao xue SongWei Yang Nan Yi ChunXu yu HaiJun yu JianFeng yue XiongHui Zeng Ming Zeng zhi Zeng FengShou zhang yunHua zhang MingGang Zhao JiFang Zhou ZuYing Zhou jingJun Zhu ZhongHua Zhu Key Laboratory of Particle and Radiation Imaging (Ministry of Education)and Department of Engineering Physics Tsinghua University College of Nuclear Science and Technology Beijing Normal University Institute of Physics Academia Sinica Department of Physics Dokuz Eylül University Department of Physics Tsinghua University NUCTECH Company Ya Long River Hydropower Development Company College of Physical Science and Technology Sichuan University Department of Nuclear Physics China Institute of Atomic Energy School of Physics Nankai University Department of Physics Banaras Hindu University Department of Physics Beijing Normal University

The CDEX-10 experiment searches for light weakly interacting massive particles, a form of dark matter, at the China jinping Underground Laboratory, where approximately 10 kg of germanium detectors are arranged in an array and immersed in liquid nitrogen. Herein, we report on the experimental apparatus, detector characterization, and spectrum analysis of one prototype detector. Owing to the higher rise-time resolution of the CDEX-10 prototype detector as compared with CDEX-1 B, we identified the origin of an observed category of extremely fast events. For data analysis of the CDEX-10 prototype detector, we introduced and applied an improved bulk/surface event discrimination method. The results of the new method were compared to those of the CDEX-1 B spectrum. Both sets of results showed good consistency in the 0-12 ke Vee energy range, except for the 8.0 keV K-shell X-ray peak from the external copper.

关键词： WIMP pPCGe liquid nitrogen bulk/surface event discrimination extremely fast events

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The GECAM ground search system for gamma-ray transients

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： Ce Cai Yan-Qiu zhang Shao-lin Xiong Ping Wang Jian-Hui li xiao-Bo li cheng-Kui li yue Huang Shi-Jie zheng li-Ming Song Shuo xiao Qi-Bin Yi Yi Zhao Sheng-Lun Xie Rui Qiao Yan-Qi Du zhi-Wei Guo Wang-Chen xue Chao zheng Jia-Cong liu Chen-Wei Wang Wen-Jun Tan yue Wang jin-Peng zhang Chao-Yang li Guo-Ying Zhao xiao-yun Zhao xiao-Lu zhang zhen zhang Wen-Xi Peng Xiang Ma jing-Yan Shi dong-Ya Guo jin Wang Xin-Qiao li Xiang-Yang Wen zheng-Hua An Fan zhang College of Physics and Hebei Key Laboratory of Photophysics Research and Application Hebei Normal University Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences University of Chinese Academy of Sciences School of Physics and Electronic Science Guizhou Normal University Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal University School of Physics and Optoelectronics Xiangtan University School of Computer and Information Dezhou University Institute of Astrophysics Central China Normal University

In the era of time-domain,multi-messenger astronomy,the detection of transient events on the high-energy electromagnetic sky has become more important than *** gravitational wave high-energy electromagnetic counterpart all-sky monitor （GECAM）is a dedicated mission to monitor gamma-ray transients,launched in December,2020.A real-time on-board trigger and location software,using the traditional signal-to-noise ratio （SNR） method for blind search,is constrained to relatively bright signals due to the limitations in on-board computing resources and the need for real-time *** this work,we developed a ground-based pipeline for GECAM to search for various transients,especially for weak bursts missed by on-board *** pipeline includes both automatic and manual mode,offering options for blind search and targeted *** targeted search is specifically designed to search for interesting weak bursts,such as gravitational wave-associated gamma-ray bursts （GRBs）.From the ground search of the data in the first year,GECAM has been triggered by 54 GRBs and other transients,including soft gamma-ray repeaters,X-ray binaries,solar flares,terrestrial gamma-ray *** report the properties of each type of triggers,such as trigger time and light *** this search pipeline and assuming a soft Band spectrum,the GRB detection sensitivity of GECAM is increased to about 1.1×10-8erg cm-2s-1（10-1000 keV,burst duration of 20 s）.These results demonstrate that the GECAM ground search system （both blind search and targeted search） is a versatile pipeline to recover true astrophysical signals which were too weak to be found in the on-board search.

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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67卷 83-91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 UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Institute of Physics Academia SinicaTaipei 11529China NUCTECH Company Beijing 100084China YaLong River Hydropower Development Company Chengdu 610051China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China College of Physics Sichuan UniversityChengdu 610065China School of Physics Peking UniversityBeijing 100871China Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China Sino-French Institute of Nuclear and Technology Sun Yet-sen UniversityZhuhai 519082China School of Physics Nankai UniversityTianjin 300071China Department of Physics Banaras Hindu UniversityVaranasi 221005India Department of Physics Beijing Normal UniversityBeijing 100875China 不详

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 1×10^(15)to 7×10^(16)g 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 theχ-electron(χ-e)elastic-scattering cross sectionσ_(χe)~5×10^(-29)cm^(2)forχwith 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 ***(m_(χ),σ_(χe))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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复方五味子素B及其成分体外抑制胃癌细胞的增殖

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世界华人消化杂志 2007年第23期15卷 2526-2529页

作者：刘晓霓张承玉李月珍金秀东郑学芝李丽牡丹江医学院生理教研室黑龙江省牡丹江市157011

目的：筛选复方五味子素组方最佳配比，比较复方五味子素B及其成分对胃癌细胞的增殖抑制作用．方法：采用L4（2^3）正交设计的方法筛选药物的最佳配比．用MTT的方法观察组方及其成分对胃癌细胞的增殖抑制作用．空白对照组加培养液：阴... 详细信息

目的：筛选复方五味子素组方最佳配比，比较复方五味子素B及其成分对胃癌细胞的增殖抑制作用．方法：采用L4（2^3）正交设计的方法筛选药物的最佳配比．用MTT的方法观察组方及其成分对胃癌细胞的增殖抑制作用．空白对照组加培养液：阴性对照和阳性对照组分别加DMSO和5-氟尿嘧啶（5-FU）结果：高浓度五味子乙素（100mg／L）、低浓度芦荟大黄素（50mg／L）、低浓度黄芪多糖（50mg／L）组方为复方五味子素B的药物最佳配比．同阴性对照组（0．427±0．018）相比，五味子乙素低浓度（0．296±0．011）和高浓度组（0．260±0．012）、芦荟大黄素低浓度（0．376±0．017）和高浓度组（0．334±0．013），复方五味素B组（0．162±0．007）在波长490nm处的吸光觑值均显著性降低（P〈0．01）：增殖抑制率结果显示，五味子乙素低浓度（26．26％±4．65％）和高浓度组（39．11％±5．13％），芦荟大黄素高浓度组（21．78％±3．67％），复方五味素B组（52．06％±9．87％）抑制率均明显增高．结论：合理的中药有效成分组方可能有效提高单纯中药有效成分的作用，将中药有效成分合理组方可能是开发现代化复方中药的有效方法和途径之一．

关键词：五味子乙素芦荟大黄素黄芪多糖 MTT法胃癌

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Space-to-Ground Quantum Key Distribution Using a Small-Sized Payload on Tiangong-2 Space Lab

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Chinese Physics Letters 2017年第9期34卷 18-23页

作者： Sheng-Kai liao jin lin Ji-Gang Ren Wei-yue liu Jia Qiang Juan Yin Yang li Qi Shen liang zhang xue-Feng liang Hai-lin Yong Feng-zhi li Ya-yun Yin yuan Cao Wen-Qi Cai Wen-Zhuo zhang Jian-Jun Jia jin-Cai Wu xiao-Wen Chen Shan-Cong zhang xiao-Jun Jiang Jian-Feng Wang Yong-Mei Huang Qiang Wang Lu Ma li li Ge-Sheng Pan Qiang zhang yu-Ao Chen Chao-Yang Lu Nai-Le liu Xiongfeng Ma Rong Shu cheng-zhi Peng Jian-yu Wang Jian-Wei Pan Department of Modern Physics and Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026 Shanghai Branch CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum PhysicsShanghai 201315 Key Laboratory of Space Active Opto-Electronic Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083 Beijing UCAS Space Technology Co. LtdBeijing 100190 National Astronomical Observatories Chinese Academy of SciencesBeijing 100012 Key Laboratory of Optical engineering Institute of Optics and ElectronicsChinese Academy of SciencesChengdu 610209 Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011

Quantum technology establishes a foundation for secure communication via quantum key distribution （QKD）. In the last two decades, the rapid development of QKD makes a global quantum communication network feasible. In order to construct this network, it is economical to consider small-sized and low-cost QKD payloads, which can be assembled on satellites with different sizes, such as space stations. Here we report an experimental demonstration of space-to-ground QKD using a small-sized payload, from Tiangong-2 space lab to Nanshan ground station. The 57.9-kg payload integrates a tracking system, a QKD transmitter along with modules for synchronization, and a laser communication transmitter. In the space lab, a 50MHz vacuum＋weak decoy-state optical source is sent through a reflective telescope with an aperture of 200mm. On the ground station, a telescope with an aperture of 1200mm collects the signal photons. A stable and high-transmittance communication channel is set up with a high-precision bidirectional tracking system, a polarization compensation module, and a synchronization system. When the quantum link is successfully established, we obtain a key rate over 100bps with a communication distance up to 719km. Together with our recent development of QKD in daylight, the present demonstration paves the way towards a practical satellite-constellation-based global quantum secure network with small-sized QKD payloads.

关键词： QKD Space-to-Ground Quantum Key Distribution Using a Small-Sized Payload on Tiangong-2 Space Lab

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The first data release(DR1) of the LAMOST regular survey

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Research in Astronomy and Astrophysics 2015年第8期15卷 1095-1124页

作者： A-li Luo Yong-Heng Zhao Gang Zhao li-Cai Deng xiao-Wei liu Yi-Peng jing Gang Wang Hao-Tong zhang Jian-Rong Shi Xiang-Qun Cui Yao-Quan Chu Guo-Ping li Zhong-Rui Bai yue Wu Yan Cai Shu-yun Cao Zi-Huang Cao Jeffrey L.Carlin Hai-yuan Chen Jian-Jun Chen Kun-Xin Chen li Chen xue-Lei Chen xiao-Yan Chen Ying Chen Norbert Christlieb Jia-Ru Chu Chen-Zhou Cui Yi-Qiao dong Bing Du dong-Wei Fan Lei Feng Jian-ning Fu Peng Gao xue-Fei Gong Bo-Zhong Gu Yan-Xin Guo Zhan-Wen Han Bo-liang He jin-liang Hou Yong-Hui Hou Wen Hou Hong-Zhuan Hu ning-Sheng Hu Zhong-Wen Hu zhi-Ying Huo Lei Jia Fang-Hua Jiang Xiang Jiang zhi-Bo Jiang Ge jin xiao Kong Xu Kong Ya-Juan Lei Ai-Hua li Chang-Hua li Guang-Wei li Hai-ning li Jian li Qi li Shuang li Sha-Sha li Xin-Nan li Yan li Yin-Bi li Ye-Ping li yuan liang Chien-cheng lin Chao liu Gen-Rong liu Guan-Qun liu zhi-Gang liu Wen-zhi Lu yu Luo Yin-Dun Mao Heidi Newberg Ji-Jun ni Zhao-Xiang Qi Yong-Jun Qi Shi-Yin Shen Huo-Ming Shi jing Song Yi-Han Song Ding-Qiang Su Hong-Jun Su zheng-Hong Tang Qing-Sheng Tao yuan Tian Dan Wang Da-Qi Wang Feng-Fei Wang Guo-Min Wang Hai Wang Hong-Chi Wang Jian Wang Jia-ning Wang Jian-ling Wang Jian-Ping Wang Jun-Xian Wang Lei Wang Meng-Xin Wang Shou-Guan Wang Shu-Qing Wang Xia Wang Ya-Nan Wang You Wang yue-Fei Wang You-Fen Wang Peng Wei Ming-zhi Wei Hong Wu Ke-Fei Wu xue-Bing Wu yu-Zhong Wu xiao-zheng Xing ling-Zhe Xu Xin-Qi Xu Yan Xu Tai-Sheng Yan De-Hua Yang Hai-Feng Yang Hui-Qin Yang Ming Yang zheng-Qiu Yao Yong yu Hui yuan Hai-Bo yuan Hai-Long yuan Wei-Min yuan Chao Zhai En-Peng zhang Hua-Wei zhang Jian-Nan zhang li-Pin zhang Wei zhang Yong zhang Yan-Xia zhang zheng-Chao zhang Ming Zhao Fang Zhou Xu Zhou Jie Zhu Yong-Tian Zhu Si-cheng Zou Fang Zuo National Astronomical Observatories Chinese Academy of Sciences Department of Astronomy Peking University Shanghai Astronomical Observatory Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical ObservatoriesChinese Academy of Sciences University of Science and Technology of China Department of Physics Applied Physics and AstronomyRensselaer Polytechnic InstituteTroyNY 12180USA Department of Physics and Astronomy Earlham CollegeRichmondIN 47374USA Universitt Heidelberg Zentrum für AstronomieLandessternwarteKnigstuhl 1269117 HeidelbergGermany Department of Astronomy Beijing Normal University yunnan Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

The Large sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST） general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in June 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in June 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio（SNR） ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters： late A,FGK-type stars with high quality spectra（1 061 918 entries）, A-type stars（100 073 entries）, and M-type stars（121 522 entries）. This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided.

关键词： techniques: spectroscopic survey—data release—catalog

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First results on ^(76)Ge neutrinoless double beta decay from CDEX-1 experiment

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Science China(Physics,Mechanics & Astronomy) 2017年第7期60卷 53-59页

作者： li Wang Qian yue KeJun Kang JianPing cheng yuanjing li TszKing Henry Wong ShinTed lin JianPing Chang jingHan Chen QingHao Chen yunHua Chen zhi Deng Qiang Du Hui Gong li He QingJu He jinWei Hu HanXiong Huang TengRui Huang liPing Jia Hao Jiang HauBin li Hong li JianMin li jin li Jun li Xia li xueQian li yuLan li FongKay lin ShuKui liu Hao Ma jingLu Ma Xingyu Pan Jie Ren XiChao Ruan ManBin Shen Vivek Sharma Lakhwinder Singh Manoj Kumar Singh Manoj Kumar Singh Arun Kumar Soma ChangJian Tang WeiYou Tang ChaoHsiung Tseng JiMin Wang Qing Wang ShiYong Wu yucheng Wu HaoYang Xing Yin Xu Tao xue liTao Yang SongWei Yang Nan Yi ChunXu yu HaiJun yu WeiHe Zeng XiongHui Zeng zhi Zeng Lan zhang yunHua zhang MingGang Zhao Wei Zhao JiFang Zhou ZuYing Zhou jingJun Zhu WeiBin Zhu ZhongHua Zhu Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics Tsinghua University Institute of Physics Academia Sinica School of Physical Science and Technology Sichuan University NUCTECH Company YaLong River Hydropower Development Company Department of Nuclear Physics China Institute of Atomic Energy School of Physics Nankai University Department of Physics Banaras Hindu University

We report the first results on 76Ge neutrinoless double beta decay from stage one of the China dark-matter experiment （CDEX）. A p-type point-contact high-purity germanium detector with a mass of 994g has been installed to detect neutrinoless double beta decay events, as well as to directly detect dark matter particles. An exposure of 304kgd has been analyzed over a wide spectral band from 500keV to 3MeV. The average event rate obtained was about 0.012 counts per keV per kg per day over the 2.039MeV energy range. The half-life of76Ge neutrinoless double beta decay derived based on this result is 70v2〉6.4× 1022 yr （90%C.L.）. An upper limit on the effective Majorana-neutrino mass of 5.0eV has been achieved.

关键词： neutrinoless double beta decay CDEX point-contact germanium detector 76Ge isotope

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2019 Chinese expert consensus statement on diagnosis and treatment of syphilis

引用

Chinese Medical Journal 2020年第19期133卷 2335-2337页

作者：无 Qian-Qiu Wang Rui-li zhang yue-Ping Yin Quan-Zhong liu Shu-zhen Qi dong-Mei Xu yu-Ye li xiao-Fang li xiao-Hong Su Min-zhi Wu Xian-Biao Zou li-Gang Yang Xiang-Sheng Chen Ping-yu Zhou jin-Hua Xu Xiang-dong Gong Guo-Jun liang Juan Jiang Hao cheng Feng-Qin Ge National Center for Sexually Transmitted Disease Control China Centers for Disease Control and Prevention Committee of Sexually Transmitted Disease Branch of DermatovenereologyChinese Medical Association Committee of Sexually Transmitted Disease Branch of DermatologistsChinese Medical Doctor Association Institute of Dermatology Chinese Academy of Medical Science&Peking Union Medical CollegeNational Center for Sexually Transmitted Disease ControlChina Centers for Disease Control and PreventionNanjingJiangsu 210042China Department of Dermatology The Second Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210011China Department of Dermatology General Hospital of Tianjin Medical UniversityTianjin 300052China Department of Neurology Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Department of Dermatology The First Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650032China Department of Dermatology The 5th People’s Hospital of SuzhouSuzhouJiangsu 215131China Department of Dermatology The First Affiliated Hospital of General Hospital of People’s Liberation ArmyBeijing 100037China Department of Dermatology Dermatology Hospital of Southern Medical UniversityGuangzhouGuangdong 510091China Department of Sexually Transmitted Disease Institute Shanghai Skin Disease HospitalShanghai 200071China Department of Dermatology Huashan Hospital of Fudan UniversityShanghai 200040China Department of Dermatology Sir Run Run Shaw Hospital of Zhejiang University School of MedicineHangzhouZhejiang 310016China

Syphilis,caused by Treponema pallidum subsp pallidum(***),is a chronic,systemic human disease transmitted through sexual *** incidence and prevalence of syphilis is still high in China.[1]To guide the prevention measures and management of this disease,we renew the guidelines on diagnosis and treatment of syphilis[Supplementary file,http://***/CM9/A292].Manifestations and diagnosis of all stages of syphilis are presented in Table 1,and management in Table 2.

关键词： diagnosis prevention treatment

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