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Agricultural Sciences in China 2005年第11期4卷 865-871页

作者： liao yun-cheng zhang de-qi jia zhi-kuan zhang li lu yang-ming College of Agronomy Northwest A＆F University Yangling 712100 P.R. China

The effects of film mulching of millet on soil water content were studied in semi-arid areas in the Loess Plateau of South Ningxia, China. Different mulching methods including water micro-collecting farming （WF）, water micro-collecting farming in winter fallow （WW）, hole seeding on film （HF）, hole seeding on film in winter fallow （HW） were compared to determine the effects of mulching methods on soil water collecting and conservation during millet growth periods of 2003-2004, as well as the variation tendency of water content after rainfall, output of millet and water use efficiency （WUE）. The experimental results in the two successive years indicated that water micro-collecting farming had a better function of collecting water after rainfall, and side infiltrated water was stored under the ridges and the top layer 0-40 cm soil water changes were great. WF had obvious role in water collection and preservation of soil moisture. It effectively improved the water supply capacity by about 19.05% in the end of growth seasons. The storage of HW and WW increased by 24.9 and 7.1 mm compared with CK, and output of yield were obviously increased. Film mulching increased the yield of millet and enhanced water use efficiency （WUE）. During different growth periods, WF exhibited better water storage function with lower water consumption, and demonstrated optimal social and ecological benefits.

关键词： Millet Dynamic change of soil moisture Film mulching Water micro-collecting farming

The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： Xiao-yun Zhao Shao-lin Xiong Xiang-yang Wen Xin-qiao li Ce Cai Shuo Xiao qi luo Wen-Xi Peng Dong-Ya Guo Zheng-Hua An Ke Gong Jin-Yuan liao Yan-qiu zhang Yue Huang lu li Xing Wen Fei zhang Jing Duan Chen-Wei Wang Dong-li Shi Peng zhang qi-Bin Yi Chao-yang li Yan-Bing Xu Xiao-Hua liang Ya-qing liu Da-li zhang Xi-Lei Sun Fan zhang Gang Chen Huan-Yu Wang Sheng yang Xiao-Jing liu Min Gao Mao-Shun li Jin-Zhou Wang Xing Zhou Yi Zhao Wang-Chen Xue Chao Zheng jia-Cong liu Xing-Bo Han Jin-ling qi jia Huang Ke-Ke zhang Can Chen Xiong-Tao yang Dong-Jie Hou Yu-Sa Wang Rui qiao Xiang Ma Xiao-Bo li Ping Wang Xin-Ying Song li-ming Song Shi-Jie Zheng Bing li Hong-Mei zhang Yue Zhu Wei Chen jian-jian He Zhen zhang Jin Hou Hong-Jun Wang Yan-Chao Hao Xiang-Yu Wang Zong-Yuan yang zhi-Long Wen zhi Chang Yuan-Yuan Du Rui Gao Xiao-Fei Lan Yan-Guo li Gang li Xu-Fang li Fang-Jun lu Hong lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang Yu-Peng Xu jia-Wei yang Xue-Juan yang Shuang-Nan zhang Chao-Yue zhang cheng-Mo zhang zhi-cheng Tang cheng cheng Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space Science College China West Normal UniversityNanchong 637002China department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun University of Science and Technology Changchun 130022China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 december *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

Significant loss of soil inorganic carbon at the continental scale

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National Science Review 2022年第2期9卷 13-20页

作者： Xiao-Dong Song Fei yang Hua-Yong Wu Jing zhang de-cheng li Feng liu Yu-Guo Zhao Jin-ling yang Bing Ju Chong-Fa Cai Biao Huang Huai-Yu Long Ying lu Yue-Yu Sui qiu-Bing Wang Ke-Ning Wu Feng-Rong zhang ming-Kui zhang Zhou Shi Wan-Zhu Ma Gang Xin zhi-Ping qi qing-Rui Chang En Ci Da-Gang Yuan yang-Zhu zhang Jun-Ping Bai jia-Ying Chen Jie Chen Yin-Jun Chen yun-Zhong Dong Chun-Lan Han ling li li-ming liu jian-Jun Pan Fu-Peng Song Fu-Jun Sun deng-Feng Wang Tian-Wei Wang Xiang-Hua Wei Hong-qi Wu Xia Zhao qing Zhou Gan-lin zhang State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences College of Advanced Agricultural Sciences University of Chinese Academy of Sciences College of Resources and Environment Huazhong Agricultural University Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences College of Natural Resources and Environment South China Agricultural University Northeast Institute of Geography and Agroecology Chinese Academy of Sciences College of Land and Environment Shenyang Agricultural University School of Land Science and Technology China University of Geosciences College of Land Science and Technology China Agricultural University College of Environmental and Resource Sciences Zhejiang University Institute of Digital Agriculture Zhejiang Academy of Agricultural Sciences College of Agriculture Heilongjiang Bayi Agricultural University Tropical Crops Genetic Resources Institute Chinese Academy of Tropical Agricultural Sciences College of Natural Resources and Environment Northwest A & F University College of Resources and Environment Southwest University College of Resources Sichuan Agricultural University College of Resources and Environment Hunan Agricultural University Institute of Agricultural Product Quality Standard and Testing Research Tibet Academy of Agricultural and Animal Husbandry Sciences School of Agricultural Sciences Zhengzhou University Institute of Agriculture Environment and Resources Research Shanxi Academy of Agricultural Sciences College of Resources and Environment Henan Agricultural University College of Resources and Environment China Agricultural University College of Resources and Environmental Sciences Nanjing Agricultural University College of Resources and Environment Shandong Agricultural University Agricultural College Guangxi University College of Grassland and Environment Science Xinjiang Agricultural University College of Geographical Science Qinghai Normal University

Widespread soil acidification due to atmospheric acid deposition and agricultural fertilization may greatly accelerate soil carbonate dissolution and ***,to date,few studies have addressed these ***,we use meta-analysis and nationwide-survey datasets to investigate changes in soil inorganic carbon(SIC) stocks in *** observe an overall decrease in SIC stocks in topsoil(0-30 cm)(11.33 g C m-2yr-1) from the 1980 s to the 2010 *** SIC stocks have decreased by～8.99±2.24%(1.37±0.37 Pg C).The average SIC losses across China(0.046 Pg C yr-1) and in cropland(0.016 Pg C yr-1) account for～17.6%-24.0% of the terrestrial C sink and 57.1% of the soil organic carbon sink in cropland,*** deposition and climate change have profound influences on SIC *** estimate that～19.12%-19.47% of SIC stocks will be further lost by *** consumption of SIC may offset a large portion of global efforts aimed at ecosystem carbon sequestration,which emphasizes the importance of achieving a better understanding of the indirect coupling mechanisms of nitrogen and carbon cycling and of effective countermeasures to minimize SIC loss.

关键词： China soil inorganic carbon stocks global change carbonate soil acidification

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

Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

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Research in Astronomy and Astrophysics 2021年第3期21卷 193-204页

作者： He-Xin liu Yue Huang Guang-cheng Xiao qing-Cui Bu Jin-lu Qu Shu zhang Shuang-Nan zhang Shu-Mei jia Fang-Jun lu Xiang Ma lian Tao Wei zhang li Chen li-ming Song Ti-Pei li Yu-Peng Xu Xue-Lei Cao Yong Chen Cong-Zhan liu Ce Cai zhi Chang Gang Chen Tian-Xiang Chen Yi-Bao Chen Yu-Peng Chen Wei Cui Wei-Wei Cui Jing-Kang deng Yong-Wei Dong Yuan-Yuan Du Min-Xue Fu Guan-Hua Gao He Gao Min Gao ming-Yu Ge Yu-Dong Gu Ju Guan cheng-cheng Guo Da-Wei Han jia Huo lu-Hua jiang Wei-Chun jiang Jing Jin Yong-Jie Jin ling-Da Kong Bing li cheng-Kui li Gang li Mao-Shun li Wei li Xian li Xiao-Bo li Xu-Fang li yang-Guo li Zheng-Wei li Xiao-Hua liang Jing-Yuan liao Bai-Sheng liu Guo-qing liu Hong-Wei liu Xiao-Jing liu Yi-Nong liu Bo lu Xue-Feng lu qi luo Tao luo Bin Meng Yi Nang jian-Yin Nie Ge Ou Na Sai Ren-cheng Shang Xin-Ying Song liang Sun Ying Tan You-li Tuo Chen Wang Guo-Feng Wang Juan Wang ling-Jun Wang Weng-Shuai Wang Yu-Sa Wang Xiang-yang Wen Bai-yang Wu Bo-Bing Wu Mei Wu Shuo Xiao Shao-lin Xiong He Xu jia-Wei yang Sheng yang Yan-Ji yang Yi-Jung yang qi-Bin Yi qian-qing Yin Yuan You Ai-Mei zhang cheng-Mo zhang Fan zhang Hong-Mei zhang Juan zhang Tong zhang Wan-Chang zhang Wen-Zhao zhang Yi zhang Yi-Fei zhang Yong-Jie zhang Yuan-Hang zhang Yue zhang Zhao zhang zhi zhang Zi-liang zhang Hai-Sheng Zhao Xiao-Fan Zhao Shi-Jie Zheng Yao-Guang Zheng deng-Ke Zhou jian-Feng Zhou Yu-Xuan Zhu Ren-lin Zhuang Yue Zhu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls Universität72076 TubingenGermany department of Astronomy Beijing Normal UniversityBeijing 100088China department of Astronomy Tsinghua UniversityBeijing 100084China department of Physics Tsinghua UniversityBeijing 100084China department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of Physics Sciences&Technology Hebei UniversityBaoding 071002Hebei ProvinceChina

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT,NICER and *** outburst can be classified roughly into four different ***-C quasi-periodic oscillations(QPOs)observed by NICER(about 0.1-6 Hz)and Insight-HXMT(about 0.7-8 Hz)are also reported in this ***,we study various physical quantities related to QPO *** QPO rms-frequency relationship in the energy band 1-10 keV indicates that there is a turning pointing in frequency around2 Hz,which is similar to that of GRS 1915+105.A possible hypothesis for the relationship above may be related to the inclination of the source,which may require a high inclination to explain *** relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources,which can indicate that the origin of type-C QPOs is non-thermal.

关键词： X-ray binaries black hole candidate QPO EXO 1846–031

Paired quasi-periodic pulsations of hard X-ray emission in a solar flare

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Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 195-206页

作者： Hai-Sheng Zhao Dong li Shao-lin Xiong Yan-qiu zhang yang Su Wei Chen Yi Zhao Xiao-Bo li jia-Cong liu Wen-Xi Peng Rui qiao Xin-qiao li Xiang-yang Wen li-ming Song Shi-Jie Zheng Xin-Ying Song Xiao-yun Zhao Yue Huang Shuang-Nan zhang Shuo Xiao Ce Cai Zheng-Hua An Can Chen Gang Chen Wei Chen Yan-qi Du Min Gao Ke Gong Dong-Ya Guo zhi-Wei Guo jian-jian He Bin li Chao li Chao-yang li Gang li jian-Hui li lu li qing-Xin li Yan-Guo li Jing liang Xiao-Hua liang Jin-Yuan liao Xiao-Jing liu Ya-qing liu qi luo Xiang Ma Bin Meng Ge Ou Dong-li Shi Jing-Yan Shi Gong-Xing Sun Xi-Lei Sun You-li Tuo Chen-Wei Wang Hui Wang Jin Wang Jin-Zhou Wang Ping Wang Wen-Shuai Wang Hong Wu Sheng-lun Xie Yan-Bing Xu Yu-Peng Xu Wang-Chen Xue Sheng yang Min Yao jian-Ying Ye qi-Bin Yi Chao-Yue zhang Da-li zhang Fan zhang Fei zhang Hong-Mei zhang Kai zhang Peng zhang Xiao-lu zhang Zhen zhang Guo-Ying Zhao Shi-Yi Zhao Chao Zheng Xing Zhou Yue Zhu Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China department of Astronomy Beijing Normal UniversityBeijing 100875China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China Physics and Space Science College China West Normal UniversityNanchong 637002China Key Laboratory of Stellar and Interstellar Physics and department of Physics Xiangtan UniversityXiangtan 411105China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Changchun University of Science and TechnologyChangchun 130022China College of Physics and Engineering Qufu Normal UniversityQufu 273165China College of Physics Sciences&Technology Hebei UniversityBaoding 071002China

We investigate high time resolution data obtained by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)during the flare event on 2022 April 21 at 01:52 *** subpeaks with durations of 4-6 s have been detected in the hard X-ray precursor phase,and the key feature is that they appear in pairs and seem like double-peak *** subpeaks are rarely observed in hard X-ray band and confirmed by the microwave obtained by Nobeyama Radio Polarimeters(NoRP)and Radio Solar Telescope Network(RSTN).While an exponential function can describe the continuum component of the time profile from the precursor to part of the impulsive *** periods of quasi-periodic pulsations(QPPs)are detected to be about 7.3 and 12.8 s for the precursor and impulsive phase,respectively,with at least 95%confidence *** paired QPPs are assumed to be double-peak QPPs and then the scenario of current loop coalescence model is found to be in good agreement with our *** precursor phase can be interpreted as the oscillating coalescence of two islands,while the impulsive phase can be interpreted as more islands to coalesce one by one to form larger islands.

关键词： solar flare QPPs loop coalescence circular-ribbon flare

Advances in nuclear detection and readout techniques

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Nuclear Science and Techniques 2023年第12期34卷 281-358页

作者： Rui He Xiao‑yang Niu Yi Wang Hong‑Wei liang Hong‑Bang liu Ye Tian Hong‑lin zhang Chao‑Jie Zou zhi‑Yi liu yun‑Long zhang Hai‑Bo yang Ju Huang Hong‑Kai Wang Wei‑jia Han Bei Cao Gang Chen Cong Dai li‑Min Duan Rui‑Rui Fan Fang‑Fa Fu jian‑Hua Guo Dong Han Wei jiang Xian‑qin li Xin li Zhuo‑Dai li Yu‑Tie liang Shun liao de‑Xu lin cheng‑ming liu Guo‑Rui liu Jun‑Tao liu Ze Long Meng‑Chen Niu Hao qiu Hu Ran Xiang‑ming Sun Bo‑Tan Wang jia Wang Jin‑Xiang Wang qi‑lin Wang Yong‑Sheng Wang Xiao‑Chuan Xia Hao‑qing Xie He‑Run yang Hong Yin Hong Yuan Chun‑Hui zhang Rui‑Guang Zhao Ran Zheng cheng‑Xin Zhao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China Key Laboratory of Particle and Radiation Imaging Department of Engineering PhysicsTsinghua UniversityBeijing 100084China School of Integrated Circuits Dalian University of TechnologyDalian 116020China Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China State Key Laboratory of Particle detection and Electronics University of Science and Technology of ChinaHefei 230026China department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Electronic Engineering School Heilongjiang UniversityHarbin 150080China Spallation Neutron Source Science Center Dongguan 523803China Micro‑electronic department Harbin Institute of TechnologyHarbin 150001China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210034China liaoning Academy of Materials Shenyang 110167China Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly School of Mathematics and Physics Chengdu University of TechnologyChengdu 620035China PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China School of Electronics and Information Northwestern Polytechnical UniversityXi’an 710129China State Key Lab of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China School of Computer Science Northwestern Polytechnical UniversityXi’an 710129China

“A Craftsman Must Sharpen His Tools to Do His Job,”said *** detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the ***,they are being increasingly used in other disciplines like nuclear power generation,life sciences,environmental sciences,medical sciences,*** article reviews the short history,recent development,and trend of nuclear detection and readout techniques,covering Semiconductor detector,Gaseous detector,Scintillation detector,Cherenkov detector,Transition Radiation detector,and Readout *** explaining the principle and using examples,we hope to help the interested reader underst and this research field and bring exciting information to the community.

关键词： Silicon detector Wide bandgap detector Time projection chamber(TPC) Multigap resistive plate chamber detector(MRPC) Scintillation detector Calorimeters Cherenkov detector Transition radiation detector Artificial intelligence Trigger-less readout

Data processing and data products from 2017 to 2019 campaign of astronomical site testing at Ali,Daocheng and Muztagh-ata

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Research in Astronomy and Astrophysics 2020年第6期20卷 109-130页

作者： Zi-Huang Cao Jin-Xin Hao lu Feng Hugh RAJones jian li Jing Xu li-Yong liu Teng-Fei Song jian-Feng Wang Hua-lin Chen Yan-Jie Xue Huang Shen Yong-Heng Zhao Zhao-Xiang qi jian-Rong Shi Yuan Tian Zheng Wang Xia Wang Jin-liang Hou Jin-ming Bai Ji yang Xu Zhou Yong-qiang Yao jia Yin Ali Esamdin Guang-Xin Pu Peng Wei Chun-Hai Bai Guo-Jie Feng lu Ma Xuan zhang Yu liu Chong Pei zhi-Xia Shen yun-Ying jiang jian-Feng Tian Xian-Qun Zeng zhi-Gang Hou Xu yang Jun-Bo zhang Shi-Long liao Dong-Wei Fan yun-Fei Xu jian-Ping Xiong Tai-Sheng Yan Xi zhang Chang-Hua li Yi-Han Tao Si-cheng Yu zhi-Song Cao Hong-Shuai Wang National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Centre for Astrophysics University of HertfordshireHatfieldUK School of Journalism Communication University of ChinaBeijing 100024China Nanjing Institute of Astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China yunnan Observatories Chinese Academy of SciencesKunming 650216China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210033China Beijing Kaiyang Space Technology Co. LtdBeijing 100085China

Based on previous site testing and satellite cloud data,Ali,Daocheng and Muztagh-ata have been selected as candidate sites for the Large Optical/Infrared Telescope(LOT) in *** present the data collection,processing,management and quality analysis for our site testing based on using similar *** analyze meteorological data,seeing,background light,cloud and precipitable water vapor data from 2017 March 10 to 2019 March *** also investigated the relative usefulness of our all-sky camera data in comparison to that from the meteorological TERRA satellite data based on a night-by-night comparison of the correlation and consistency between *** find a 6% discrepancy arising from a wide range of factors.

关键词： LOT Site-selection-data processing

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

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