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Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

Nuclear Science and Techniques 2024年第1期35卷 178-187页

作者： Sheng-Da Tang yong-Hao Chen jing-Yu Tang Rui-Rui Fan qiang Li Gong Li Dong Liu zheng-Yao jin Xing-Zhu Cui Tian-Xiang Chen Yi-Wei Yang Rong Liu Han Yi Yang Li zhen Yang Qi An Hao-Fan Bai Jiang-Bo Bai Jie Bao ping Cao Qi-ping Chen zhen Chen Zeng-Qi Cui An-Chuan Fan Chang-Qing Feng Fan-zhen Feng Ke-Qing Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He yong-cheng He Yang Hong Yi-Wei Hu Han-Xiong Huang Wei-Hua Jia Hao-yu Jiang Wei Jiang zhi-jie Jiang Ling Kang Bo Li Chao Li Jia-wen Li Xiao Li Jie Liu Shu-Bin Liu Guang-yuan Luan Chang-Jun Ning Bin-Bin Qi Jie Ren zhi-Zhou Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun zhi-Xin Tan Li-Jiao wang Peng-cheng wang Zhao-Hui wang Zhong-Wei wen Xiao-Guang Wu Xuan Wu Li-Kun Xie yong-Ji Yu Guo-Hui zhang Lin-Hao zhang Mo-Han zhang Qi-Wei zhang Xian-Peng zhang Yu-Liang zhang Yue zhang zhi-yong zhang Mao-yuan Zhao Lu-ping Zhou zhi-Hao Zhou Ke-Jun Zhu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Institute of High-Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China USTC Archaeometry Laboratory University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Nondestructive and noninvasive neutron assays are essential applications of neutron *** resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an *** back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the China Spallation Neutron Source(CSNS)that provides neutrons in the eV to 300 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test *** results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at *** study reveals its potential future applications.

关键词： CSNS White neutron beam NRTA Nuclide identification Nondestructive method

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Ionic-Liquid-Gating Induced Protonation and Superconductivity in FeSe,FeSe0.93S0.07, ZrNCl, 1T-TaS2 and Bi2Se3

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Chinese Physics Letters 2019年第7期36卷 90-93页

作者： Yi Cui Ze Hu jin-Shan zhang wen-Long Ma Ming-Wei Ma zhen Ma Cong wang Jia-qiang Yan Jian-ping Sun jin-Guang cheng Shuang Jia yuan Li jin-Sheng wen He-Chang Lei Pu Yu Wei Ji Wei-qiang Yu School of Mathematics and Physics North China Electric Power University Beijing 102206 Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices Renmin University Beijing 100872 International Center for Quantum Materials School of Physics Peking University Beijing 100871 National Laboratory of Solid State Microstructures and Department of Physics Nanjing University Nanjing 210093 Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 7Collaborative Innovation Center of Quantum Matter Beijing 100871 Innovative Center for Advanced Microstructures Nanjing University Nanjing 210093 State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing 100084

We report protonation in several compounds by an ionic-liquid-gating method, under optimized gating *** leads to single superconducting phases for several compounds. Non-volatility of protons allows post-gating magnetization and transport measurements. The superconducting transition temperature Tc is enhanced to 43.5 K for FeSe0.93S0.07, and 41 K for Fe Se after protonation. Superconducting transitions with Tc^15 K for ZrNCl,~7.2 K for 1-TaS2, and ~3.8 K for Bi2Se3 are induced after protonation. Electric transport in protonated FeSe0.93S0.07 confirms high-temperature superconductivity. Our ^1H nuclear magnetic resonance(NMR)measurements on protonated Fe Se1-xSx reveal enhanced spin-lattice relaxation rate 1/^1T1 with increasing x,which is consistent with the LDA calculations that H+ is located in the interstitial sites close to the anions.

关键词： compounds by an optimized gating conditions close to the anions

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Measurement of Br(n,γ)cross sections up to stellar s-process temperatures at the CSNS Back‑n

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Nuclear Science and Techniques 2023年第11期34卷 226-241页

作者： Gao‑Le Yang zhen‑Dong An Wei Jiang Xian‑Kai Li Wei‑Wei Qiu zheng‑Fa Liao Zi‑Yue Zhuang Xiao‑ping zhang Sheng‑Li Chen Chen‑Chen Guo Er‑Xi Xiao Xiao Fang Xin‑Xiang Li Xin‑Rong Hu Bing Jiang jin‑cheng wang Jie Ren wen Luo zhi‑Chao Zhu Hao‑Yang Lan Zong‑Wei Cao Xu Ma Ying‑Du Liu Pu‑Sen wang Yi Yang ping Su Xian‑Gai Deng Wan‑Bing He Chun‑wang Ma Yu‑Ting wang zhi‑Tao Dai Peng‑Qin He Ren‑Guang Tang Tao Zhou jing wang Han Yi Yue zhang yong‑Hao Chen Rui‑Rui Fan Ke‑Qing Gao qiang Li Kang Sun zhi‑Xin Tan Min‑Hao Gu Han‑Tao jing jing‑Yu Tang School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and TechnologyMacao 999078China CNSA Macao Center for Space Exploration and Science Macao 999078China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China School of Nuclear Science and Technology University of South ChinaHengyang 421001China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411100China Key Laboratory of Nuclear Physics and Ion‑beam Application(MOE) Institute of Modern PhysicsDepartment of Nuclear Science and TechnologyFudan UniversityShanghai 200433China Institute of Particle and Nuclear Physics Henan Normal UniversityXinxiang 453007China School of Physics Henan Normal UniversityXinxiang 453007China Shenzhen Center Cancer hospitalChinese Academy of Medical SciencesShenzhen 518100China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China

The neutron capture cross sections(n,γ)of bromine were obtained using the time-of-flight technique at the Back-n facility of the China Spallation Neutron ***γ-rays originating from neutron-induced capture events were detected using four C_(6)D_(6) *** pulse-height weighting technique and double-bunch unfolding method based on Bayesian theory were used in the data *** deductions,normalization,and corrections were carefully considered to obtain reliable measurement *** multilevel R-matrix Bayesian code SAMMY was used to extract the resonance parameters in the resolved resonance region(RRR).The average cross sections in the unresolved resonance region(URR)were obtained from 10 to 400 *** experimental results were compared with data from several evaluated libraries and previous experi-ments in the RRR and *** TALYS code was used to describe the average cross sections in the *** astrophysical Maxwell average cross sections(MACSs)of ^(79,81)Br from kT=5 to 100 keV were calculated over a sufficiently wide range of neutron *** a thermal energy of kT=30 keV,the MACS value for ^(79)Br 682±68 mb was in good agreement with the KADoNiS v1.0 recommended *** contrast,the value of 293±29 mb for ^(81)Br was substantially higher than that of the evaluated database and the KADoNiS v1.0 recommended value.

关键词： Time-of-flight technique Neutron capture cross sections Maxwell average cross sections

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Single-photon computational 3D imaging at 45 km

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Photonics Research 2020年第9期8卷 1532-1540页

作者： zhenG-ping LI XIN HUANG yuan CAO BIN wang YU-HUAI LI WEIJIE jin CHAO YU JUN zhang qiang zhang cheng-zhi PENG FEIHU XU AND JIAN-WEI PAN Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Shanghai Branch CAS Center for Excellence in Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaShanghai 201315China Shanghai Research Center for Quantum Sciences Shanghai 201315China

Single-photon light detection and ranging(lidar)offers single-photon sensitivity and picosecond timing resolution,which is desirable for high-precision three-dimensional(3 D)imaging over long *** important progress,further extending the imaging range presents enormous challenges because only a few echo photons return and are mixed with strong ***,we tackled these challenges by constructing a high-efficiency,low-noise coaxial single-photon lidar system and developing a long-range-tailored computational algorithm that provides high photon efficiency and good noise *** this technique,we experimentally demonstrated active single-photon 3 D imaging at a distance of up to 45 km in an urban environment,with a low return-signal level of^1 photon per *** system is feasible for imaging at a few hundreds of kilometers by refining the setup,and thus represents a step towards low-power and high-resolution lidar over extra-long ranges.

关键词： photon lidar return

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Measurement of the ^(232)Th(n,f)cross section in the 1-200 MeV range at the CSNS Back-n

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Nuclear Science and Techniques 2023年第8期34卷 142-153页

作者： zhi-Zhou Ren Yi-Wei Yang yong-Hao Chen Rong Liu Bang-Jiao Ye Jie wen Hai-Rui Guo Zi-Jie Han Qi-ping Chen Zhong-Wei wen Wei-Li Sun Han Yi Xing-Yan Liu Tao Ye Jiang-Bo Bai Qi An Jie Bao Yu Bao ping Cao Hao-Lei Chen zhen Chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Ke-Qing Gao Xiao-Long Gao Min-Hao Gu Chang-Cai Han Guo-Zhu He yong-cheng He Yang Hong Yi-Wei Hu Han-Xiong Huang Xi-Ru Huang Hao-Yu Jiang Wei Jiang zhi-Jie Jiang Han-Tao jing Ling Kang Bo Li Chao Li Jia-wen Li qiang Li Xiao Li Yang Li Jie Liu Shu-Bin Liu Ze Long Guang-yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi Jie Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun zhi-Jia Sun zhi-Xin Tan jing-Yu Tang Xin-Yi Tang Bin-Bin Tian Li-Jiao wang Peng-cheng wang Zhao-Hui wang Xiao-Guang Wu Xuan Wu Li-Kun Xie Xiao-Yun Yang Li Yu Tao Yu yong-Ji Yu Guo-Hui zhang Lin-Hao zhang Qi-Wei zhang Xian-Peng zhang Yu-Liang zhang zhi-yong zhang Lu-ping Zhou zhi-Hao Zhou Ke-Jun Zhu Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Applied Physics and Computational Mathematics Beijing 100088China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230027China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China

The ^(232)Th(n,f)cross section is very important in basic nuclear physics and applications based on the Th/U fuel *** the time-of-flight method and a multi-cell fast-fission ionization chamber,a novel measurement of the^(232)Th(n,f)cross sec-tion relative to^(235)U in the 1–200 MeV range was performed at the China Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(232)Th and^(235)U fission cells were measured in the single-bunch *** 232Th/235U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2–20 MeV range and 3.6–6.2%for energies in the 20–200 MeV ***^(232)Th(n,f)cross section was obtained by introducing the standard cross section of^(235)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 232Th fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 232Th fission resonances were observed in the 1–3 MeV *** present results provide^(232)Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 232Th(n f)cross section Fast-fission ionization chamber Back-n white neutron source

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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

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A combined pre- and intra-operative nomogram in evaluation of degrees of liver cirrhosis predicts post-hepatectomy liver failure: a multicenter prospective study

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Hepatobiliary Surgery and Nutrition 2024年第2期13卷 198-213,I0001-I0003页

作者： Bin-yong Liang Er-Lei zhang Jian Li Xin Long wen-qiang wang Bi-Xiang zhang zhi-Wei zhang Yi-Fa Chen Wan-Guang zhang Bin Mei zhen-Yu Xiao jin Gu Zun-Yi zhang Shuai Xiang Han-Hua Dong Lei zhang Peng Zhu Qi cheng Lin Chen Zhan-Guo zhang Bin-Hao zhang Wei Dong Xiao-Feng Liao Tao Yin Dong-De Wu Bin Jiang Yu-Feng yuan Zhong-Lin zhang Yao-Bing Chen Kai-Yan Li Wan Yee Lau Xiao-ping Chen zhi-yong Huang Hepatic Surgery Center Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of General Surgery Xiangyang Central HospitalAffiliated Hospital of Hubei University of Arts and ScienceXiangyangChina Department of Hepato-biliary Surgery Hubei Cancer HospitalWuhanChina Department of Hepato-pancreato-biliary Surgery Treatment Center Taihe HospitalHubei University of MedicineShiyanChina Department of Hepato-biliary Surgery Zhongnan Hospital of Wuhan UniversityWuhanChina Institute of Pathology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Ultrasound Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Faculty of Medicine The Chinese University of Hong KongPrince of Wales HospitalShatinN.T.Hong Kong SARChina

Background:Adequate evaluation of degrees of liver cirrhosis is essential in surgical treatment of hepatocellular carcinoma(HCC)*** impact of the degrees of cirrhosis on prediction of post-hepatectomy liver failure(PHLF)remains poorly *** study aimed to construct and validate a combined pre-and intra-operative nomogram based on the degrees of cirrhosis in predicting PHLF in HCC patients using prospective multi-center’s ***:Consecutive HCC patients who underwent hepatectomy between May 18,2019 and Dec 19,2020 were enrolled at five tertiary *** cirrhotic severity scoring(CSS)and intra-operative direct liver stiffness measurement(DSM)were performed to correlate with the Laennec histopathological grading *** performances of the pre-operative nomogram and combined pre-and intra-operative nomogram in predicting PHLF were compared with conventional predictive models of ***:For 327 patients in this study,histopathological studies showed the rates of HCC patients with no,mild,moderate,and severe cirrhosis were 41.9%,29.1%,22.9%,and 6.1%,*** CSS or DSM was closely correlated with histopathological stages of ***-three(10.1%)patients developed *** 30-and 90-day mortality rates were 0.9%.Multivariate regression analysis showed four pre-operative variables[HBV-DNA level,ICG-R15,prothrombin time(PT),and CSS],and one intra-operative variable(DSM)to be independent risk factors of *** pre-operative nomogram was constructed based on these four pre-operative variables together with total *** combined pre-and intra-operative nomogram was constructed by adding the intra-operative *** pre-operative nomogram was better than the conventional models in predicting *** prediction was further improved with the combined pre-and intra-operative ***:The combined pre-and intra-operative nomogram further improved prediction of PHLF when compared with the pre-operat

关键词： Cirrhosis post-hepatectomy liver failure(PHLF) hepatectomy nomogram hepatocellular carcinoma(HCC)

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Back-n white neutron source at CSNS and its applications

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Nuclear Science and Techniques 2021年第1期32卷 95-104页

作者： jing-Yu Tang Qi An Jiang-Bo Bai Jie Bao Yu Bao ping Cao Hao-Lei Chen Qi-ping Chen yong-Hao Chen zhen Chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Ke-Qing Gao Xiao-Long Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He yong-cheng He Yang Hong Yi-Wei Hu Han-Xiong Huang Xi-Ru Huang Hao-Yu Jiang Wei Jiang zhi-Jie Jiang Han-Tao jing Ling Kang Bo Li Chao Li Jia-wen Li qiang Li Xiao Li Yang Li Jie Liu Rong Liu Shu-Bin Liu Xing-Yan Liu Ze Long Guang-yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi Jie Ren zhi-Zhou Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun zhi-Jia Sun zhi-Xin Tan Xin-Yi Tang Bin-Bin Tian Li-Jiao wang Peng-cheng wang Zhao-Hui wang Zhong-Wei wen Xiao-Guang Wu Xuan Wu Li-Kun Xie Xiao-Yun Yang Yi-Wei Yang Han Yi Li Yu Tao Yu yong-Ji Yu Guo-Hui zhang Lin-Hao zhang Qi-Wei zhang Xian-Peng zhang Yu-Liang zhang zhi-yong zhang Lu-ping Zhou zhi-Hao Zhou Ke-Jun Zhu 无 State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China The CSNS Back-n Collaboration

Back-streaming neutrons from the spallation target of the China Spallation Neutron Source(CSNS)that emit through the incoming proton channel were exploited to build a white neutron beam facility(the so-called Back-n white neutron source),which was completed in March *** Back-n neutron beam is very intense,at approximately 29107 n/cm2/s at 55 m from the target,and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the *** addition,the excellent energy spectrum spanning from 0.5 eV to 200 MeV,and a good time resolution related tothe time-of-flight measurements make it a typical white neutron source for nuclear data measurements;its overall performance is among that of the best white neutron sources in the *** with advanced spectrometers,detectors,and application utilities,the Back-n facility can serve wide applications,with a focus on neutron-induced cross-sectional *** article presents an overview of the neutron beam characteristics,the experimental setups,and the ongoing applications at Backn.

关键词： White neutron source Nuclear data measurements Experimental setups Neutron applications

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Metformin accelerates bone fracture healing by promoting type H vessel formation through inhibition of YAP1/TAZ expression

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Bone Research 2023年第3期11卷 625-637页

作者： Zhe Ruan Hao Yin Teng-Fei Wan zhi-Rou Lin Shu-Shan Zhao Hai-Tao Long cheng Long Zhao-Hui Li Yu-Qi Liu Hao Luo Liang cheng Can Chen Min Zeng zhang-yuan Lin Rui-Bo Zhao Chun-yuan Chen zhen-Xing wang zheng-Zhao Liu Jia Cao Yi-Yi wang Ling jin Yi-Wei Liu Guo-qiang Zhu jing-Tao Zou Jiang-Shan Gong Yi Luo Yin Hu yong Zhu Hui Xie Department of Orthopedics Xiangya HospitalCentral South UniversityChangshaHunan 410008China Movement System Injury and Repair Research Center Xiangya HospitalCentral South UniversityChangshaHunan 410008China Hunan Key Laboratory of Angmedicine ChangshaHunan 410008China Angmedicine Research Center of Central South University ChangshaHunan 410008China The First Affiliated Hospital Department of Metabolism and EndocrinologyHengyang Medical SchoolUniversity of South ChinaHengyangHunan 421001China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan 410008China

Due to increasing morbidity worldwide,fractures are becoming an emerging public health *** study aimed to investigate the effect of metformin on the healing of osteoporotic as well as normal *** H vessels have recently been identified as a bone-specific vascular subtype that supports ***,we show that metformin accelerated fracture healing in both osteoporotic and normal ***,metformin promoted angiogenesis in vitro under hypoxia as well as type H vessel formation throughout fracture ***,metformin increased the expression of HIF-1α,an important positive regulator of type H vessel formation,by inhibiting the expression of YAP1/TAZ in calluses and hypoxia-cultured human microvascular endothelial cells(HMECs).The results of HIF-1αor YAP1/TAZ interference in hypoxia-cultured HMECs using si RNA further suggested that the enhancement of HIF-1αand its target genes by metformin is primarily through YAP1/TAZ ***,overexpression of YAP1/TAZ partially counteracted the effect of metformin in promoting type H vessel-induced angiogenesis-osteogenesis coupling during fracture *** summary,our findings suggest that metformin has the potential to be a therapeutic agent for fractures by promoting type H vessel formation through YAP1/TAZ inhibition.

关键词： YAP1 healing fracture

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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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