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Chemical Research in Chinese Universities 2007年第5期23卷 574-578页

作者： chen Jing-tao DI You-ying TAN Zhi-cheng SUN li-xian College of Chemistry and Chemical engineering Liaocheng University Liaocheng 252059 P. R. China department of Chemistry Shaanxi Educational College Xi＇an 710061 P. R. China Thermochemistry Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian i 16023 P. R. China

Low-temperature heat capacities of the solid compound NaCuAsO4·1.5H2O（s）were measured using a precision automated adiabatic calorimeter over a temperature range of T=78 K to T=390 K.A dehydration process occurred in the temperature range of T=368-374 *** peak temperature of the dehydration was observed to be TD=（371.828±0.146）K by means of the heat-capacity *** molar enthalpy and entropy of the dehydration were ΔDHm=（18.571±0.142）kJ/mol and ΔDSm=（49.946±0.415）J/（K·mol）,*** experimental values of heat capacities for the solid（Ⅰ）and the solid-liquid mixture（Ⅱ）were respectively fitted to two polynomial equations by the least square *** smoothed values of the molar heat capacities and the fundamental thermodynamic functions of the sample relative to the standard reference temperature 298.15 K were tabulated at an interval of 5 K.

关键词： NaCuAsO4·1.5H2O(s) Adiabatic calorimetry Heat capacity Thermodynamic function Dehydration process

Concentrations and contamination trends of heavy metals in the sediment cores of Taihu Lake,East china,and their relationship with historical eutrophication

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Chinese Journal Of Geochemistry 2010年第1期29卷 33-41页

作者： JIN Zhangdong cheng Hangxin chen li li xiangdong ZHU Guangwei ZHUANG Guangmin QIAN Na State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi 'an 710075 China Key Laboratory Lake Sedimentation and Environment Nanjing Institute of Geography & Limnology Chinese Academy of Sciences Nanjing 210008 China College of Chemistry and Molecular engineering Peking University Beijing 100871 China Institute of Geophysical and Geochemical Exploration Chinese Academy of Geological Sciences Langfang 065000 China lst Oil Production Company Jiangsu Oil Field S1NOPEC Yangzhou 225265 China department of Civil and Structural engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong

To assess the contamination trends and potential bio-availability of sediment-bound heavy metals,concentrations of heavy metals in acid-leaching fraction and in bulk sediments from the two typical bays(the Meiliang Bay and Xuhu Bay) of the Taihu Lake,East china,were *** and Zn showed elevated concentrations in the sediments from both areas,although sedimentation history and degree of pollution are different between the two *** the Meiliang Bay,both Pb and Zn pollutions started in the late 1970's,the same time as the beginning of eutrophication of the lake,while the in the Xuhu Bay the metal contamination started since recent 10 *** concentrations of acid-leachable Pb in the sediments from the Meiliang Bay are correlated with the historical eutrophication *** the eutrophication and heavy metal pollution,the chemical properties of the lake sediments were the same as the source compositions of the xiashu *** Pb and Zn in the sediments mainly occur in leachable forms by nitric or hydrochloric acid,whilst most of Cu is in residual *** results indicate that both Pb and Zn may have higher mobility and bioavailability in water and biology than Cu.

关键词：湖泊富营养化湖泊沉积物重金属含量浸出浓度污染趋势历史太湖中国

Metal-to-ligand charge transfer chirality-based sensing of mercury ions

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Photonics Research 2021年第2期9卷 213-221页

作者： xiONGBIN WANG QIUSHI WANG YULONG chen JIAGEN li RUIKUN PAN xiNG cheng KAR WEI NG xi ZHU TINGCHAO HE JIAJI cheng ZIKANG TANG RUI chen Institute of Applied Physics and Materials engineering University of MacaoAvenida da UniversidadeTaipaMacao 999078China department of Electrical and Electronic engineering Southern University of Science and TechnologyShenzhen 518055China School of Materials Science and engineering Hubei UniversityWuhan 430062China department of Materials Science and engineering Southern University of Science and TechnologyShenzhen 518055China Shenzhen Institute of Artificial Intelligence and Robotics for Society(AIRS) Shenzhen 518172China College of Physics and Optoelectronic engineering Shenzhen UniversityShenzhen 518060China

Chiral ligand conjugated transition metal oxide nanoparticles(NPs) are a promising platform for chiral recognition, biochemical sensing, and chiroptics. Herein, we present chirality-based strategy for effective sensing of mercury ions via ligand-induced chirality derived from metal-to-ligand charge transfer(MLCT) effects. The ligand competition effect between molybdenum and heavy metal ions such as mercury is designated to be essential for MLCT chirality. With this know-how, mercury ions, which have a larger stability constant(Kf) than molybdenum, can be selectively identified and quantified with a limit of detection(LOD) of 0.08 and 0.12 nmol/L for D-cysteine and L-cysteine(Cys) capped Mo O2 NPs. Such chiral chemical sensing nanosystems would be an ideal prototype for biochemical sensing with a significant impact on the field of biosensing, biological systems,and water research-based nanotoxicology.

关键词： mercury molybdenum charge

Combining magnetocaloric and elastocaloric effects in a Ni45Co5Mn37In13 alloy

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Journal of Materials Science & Technology 2021年第35期94卷 47-52页

作者： Pengtao cheng Zhenjia Zhou Jiaxing chen Zongbin li Bo Yang Kun Xu Zhe li Jun li Zhengming Zhang Dunhui Wang Suxin Qian Youwei Du National Laboratory of Solid State Microstructures and department of Physics Nanjing UniversityNanjing 210093China Jiangsu Provincial Key Laboratory for Nanotechnology Nanjing UniversityNanjing 210093China Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and EngineeringNortheastern UniversityShenyang 110819China Center for Magnetic Materials and Devices Key Laboratory for Advanced Functional and Low Dimensional Materials of Yunnan Higher Education Institute Qujing Normal UniversityQujing 655011China School of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China department of Refrigeration and Cryogenic engineering Xi'an Jiaotong UniversityXi'an 710049China

*** Refrigeration plays an essential role in nowadays ***,conventional refrigeration based on vapor compression cooling shows high energy consumption,complicated structure and even environmental *** for an environmentalfriendly and energy-saving refrigeration technology has become a matter of concern[1,2].In the past few decades,the solid-state refrigeration technologies mainly represented by magnetocaloric effect(MCE),electrocaloric effect(ECE)and elastocaloric effect(e CE)have been regarded as promising candidate to replace traditional vapor compression refrigeration technology owing to environmental friendliness and high efficiency[1-9].

关键词： alloy effect replace

Electrochemical reaction mechanism of porous Zn_(2)Ti_(3)O_(8)as a high-performance pseudocapacitive anode for li-ion batteries

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Chinese Chemical Letters 2022年第11期33卷 4776-4780页

作者： Weijie cheng Qi Feng Zhanglin Guo Guanjun chen Yong Wang lixiong Yin Jiayin li xingang Kong School of Materials Science and engineering Shaanxi University of Science and TechnologyXi'an 710021China Graduate School of engineering Toin University of YokohamaKanagawa 225-8503Japan department of Advanced Materials Science Faculty of EngineeringKagawa University2217-20 Hayashi-choTakamatsu-shi 761-0396Japan

Zn_(2)Ti_(3)O_(8),as a new type of anode material for lithium-ion batteries,is attracting enormous attention because of its low cost and excellent *** decent capacities have been reported,the electrochemical reaction mechanism of Zn_(2)Ti_(3)O_(8)has rarely been *** this work,a porous Zn_(2)Ti_(3)O_(8)anode with considerably high capacity(421 mAh/g at 100 mA/g and 209 mAh/g at 5000 mA/g after 1500 cycles)was reported,which is even higher than ever reported titanium-based anodes materials including li_(4)Ti_(5)O_(12),TiO_(2)and li_(2)ZnTi_(3)O_(8).Here,for the first time,the accurate theoretical capacity of Zn_(2)Ti_(3)O_(8)was confirmed to be 266.4 mAh/*** was also found that both intercalation reaction and pseudocapacitance contribute to the actual capacity of Zn_(2)Ti_(3)O_(8),making it possibly higher than the theoretical *** importantly,the porous structure of Zn_(2)Ti_(3)O_(8)not only promotes the intercalation reaction,but also induces high pseudocapacitance capacity(225.4 mAh/g),which boosts the reversible ***,it is the outstanding pseudocapacitance capacity of porous Zn_(2)Ti_(3)O_(8)that accounts for high actual capacity exceeding the theoretical *** work elucidates the superiorities of porous structure and provides an example in designing high-performance electrodes for lithium-ion batteries.

关键词： Zn_(2)Ti_(3)O_(8) lithium-ion battery Electrochemical reaction mechanism Theoretical capacity Pseudocapacitance

基于血流储备分数和冠脉造影评估冠脉微血管阻力的血流动力学新方法

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心脏杂志 2024年第2期36卷 150-156页

作者：陈焱赵帅高好考张瑞晨郭晓熊李玮昊李梓涵廉坤李成祥谢辛舟中国人民解放军海军第九七一医院心血管内科山东青岛266000 西部战区空军医院心血管内科四川成都610000 空军军医大学西京医院心血管内科陕西西安710032 西北工业大学电子信息学院信息工程系陕西西安710100 空军航空大学初级飞行训练基地辽宁锦州121000

目的探讨一种结合血流储备分数(FFR)和冠脉造影图像评估冠状动脉微血管阻力的血流动力学新方法。方法入选2020年11月~2021年6月在空军军医大学西京医院行冠脉造影但无明显冠脉狭窄(FFR>0.8)或冠脉狭窄经PCI术治疗后FFR>0.8,且冠脉造影1... 详细信息

目的探讨一种结合血流储备分数(FFR)和冠脉造影图像评估冠状动脉微血管阻力的血流动力学新方法。方法入选2020年11月~2021年6月在空军军医大学西京医院行冠脉造影但无明显冠脉狭窄(FFR>0.8)或冠脉狭窄经PCI术治疗后FFR>0.8,且冠脉造影1月内行SPECT静息心肌灌注显像检查的患者。共纳入33例患者,35支血管。基于目标血管分区总评分(summed rest score of target vessel,SRSTV)将患者分为心肌灌注正常组(SRSTV≤1,n=21)和心肌灌注异常组(SRSTV>1,n=12)。35支血管中,SPECT静息心肌灌注正常组23支,异常组12支。通过多角度造影图像重建目标血管三维模型,基于FFR测量静息态和充血态的远近端压力,采用血流动力学方法分别计算目标血管对应血流量Q,并进一步计算微血管阻力R、归一化微循环阻力指数Rn、冠状动脉血流储备(CFR)和冠状动脉阻力储备(RRR)。比较两组间上述血流动力学参数的差异。结果两组患者年龄、性别、BMI、收缩压、舒张压、心率、住院天数、吸烟史、饮酒史、高血压、糖尿病史、心律失常史心、肌梗死史、脑血管病史、PCI史、CABG史、心血管病家族史、LVEF及用药史均无统计学差异。充血态条件下,归一化微血管阻力指数Rn在SPECT静息心肌灌注正常组和异常组间存在统计学差异,正常组显著低于异常组(P1),但在静息态条件下,Rn在两组间差异不显著。其它项目两组间有数值上差异,无统计学意义。Spearman相关分析显示:微血管阻力R与SRSTV并无显著相关性,但归一化微血管阻力指数Rn在充血态与SRSTV呈现强相关关系(rho=0.602,95%CI:0.336~0.779,P1),在静息态与SRSTV呈现弱相关关系(rho=0.335,95%CI:0.002~0.601,P<0.05),而CFR、RRR与SRSTV间均无显著相关性。结论在排除心外膜大血管功能学阻塞的患者中,结合FFR和冠脉造影图像的充血态归一化微循环阻力指数可很好区分心肌供血状态,为精准评估冠状动脉微血管阻力提供一种新的技术手段。

关键词：冠状动脉微血管阻力血流动力学

Tumor-derived neomorphic mutations in ASXL1 impairs the BAP1-ASXL1-FOXK1/K2 transcription network

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Protein & Cell 2021年第7期12卷 557-577页

作者： Yu-Kun xia Yi-Rong Zeng Meng-li Zhang Peng liu Fang liu Hao Zhang chen-xi He Yi-Ping Sun Jin-Ye Zhang cheng Zhang Lei Song chen Ding Yu-Jie Tang Zhen Yang chen Yang Pu Wang Kun-liang Guan Yue xiong Dan Ye Huashan Hospital Fudan Universityand Molecular and Cell Biology LabInstitutes of Biomedical Sciencesand the Shanghai Key Laboratory of Medical Epigeneticsand the Key Laboratory of Metabolism and MolecularMinistry of EducationShanghai 200032China The International Co-Laboratory of Medical Epigenetics and Metabolism Ministry of Science and TechnologyShanghai 200032China department of Neurosurgery Huashan HospitalFudan UniversityShanghai 200032China Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education Department of PathophysiologyShanghai Jiao Tong University School of MedicineShanghai 200025China Key Laboratory of Synthetic Biology Institute of Plant Physiology and EcologyShanghai 200032China Institutes for Biological Sciences Chinese Academy of SciencesShanghai 200032China State Key Laboratory of Proteomics Beijing Proteome Research CenterBeijing Institute of Radiation MedicineBeijing 102206China National Center for Protein Sciences(The PHOENIX Center Beijing)Beijing 102206China State Key Laboratory of Genetic engineering and Collaborative Innovation Center for Genetics and Development School of Life SciencesInstitutes of Biomedical SciencesFudan UniversityShanghai 200032China department of Pharmacology and Moores Cancer Center University of California San DiegoLa JollaCAUSA lineberger Comprehensive Cancer Center Department of Biochemistry and BiophysicsUniversity of North CarolinaChapel HillNCUSA department of General Surgery Huashan HospitalFudan UniversityShanghai 200032China

Additional sex combs-like 1(ASXL1)interacts with BRCA1-associated protein 1(BAP1)deubiquitinase to oppose the polycomb repressive complex 1(PRC1)-mediated histone H2A *** BAP1 mutations are found in a spectrum of human malignancies,while ASXL1 mutations recurrently occur in myeloid neoplasm and are associated with poor *** all ASXL1 mutations are heterozygous frameshift or nonsense mutations in the middle or to a less extent the C-terminal region,resulting in the production of C-terminally truncated mutant ASXL1 *** ASXL1 regulates specific target genes and how the C-terminal truncation of ASXL1 promotes leukemogen-esis are ***,we report that ASXL1 interacts with forkhead transcription factors FOXK1 and FOXK2 to regulate a subset of FOXK1/K2 target *** show that the C-terminally truncated mutant ASXL1 proteins are expressed at much higher levels than the wild-type protein in ASXL1 heterozygous leukemia cells,and lose the ability to interact with FOXK1/*** deletion of the mutant allele eliminates the expression of C-termi-nally truncated ASXL1 and increases the association of wild-type ASXL1 with BAP1,thereby restoring the expression of BAP1-ASXL1-FOXK1/K2 target genes,particularly those involved in glucose metabolism,oxygen sensing,and JAK-STAT3 signaling *** addition to FOXK1/K2,we also identify other DNA-bind-ing transcription regulators including transcription factors(TFs)which interact with wild-type ASXL1,but not C-terminally truncated *** results suggest that ASXL1 mutations result in neomorphic alleles that contribute to leukemogenesis at least in part through dominantly inhibiting the wild-type ASXL1 from interacting with BAP1 and thereby impairing the function of ASXL1-BAP1-TF in regulating target genes and leukemia cell growth.

关键词： ASXL1 BAP1 FOXK1/K2 leukemia epigenetics

Review on lithium metal anodes towards high energy density batteries

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Green Energy & Environment 2023年第6期8卷 1509-1530页

作者： Jun-Fan Ding Yu-Tong Zhang Rui Xu Rui Zhang Ye xiao Shuo Zhang chen-xi Bi cheng Tang Rong xiang Ho Seok Park Qiang Zhang Jia-Qi Huang School of Materials Science and engineering Beijing Institute of TechnologyBeijing100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing100081China School of Chemical engineering and Advanced Materials The University of AdelaideAdelaideSA5005 Australia department of Mechanical engineering The University of TokyoTokyo113-8656Japan State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou310027China School of Chemical engineering Sungkyunkwan UniversitySuwon440-746Republic of Korea department of Chemical engineering Tsinghua UniversityBeijing100084China

lithium metal anode(LMA) is a promising candidate for achieving next-generation high-energy-density batteries due to its ultrahigh theoretical capacity and most negative electrochemical potential. However, the practical application of lithium metal battery(LMB) is largely retarded by the instable interfaces, uncontrolled dendrites, and rapid capacity deterioration. Herein, we present a comprehensive overview towards the working principles and inherent challenges of LMAs. Firstly, we diligently summarize the intrinsic mechanism of li stripping and plating process. The recent advances in atomic and mesoscale simulations which are crucial in guiding mechanism study and material design are also summarized. Furthermore, the advanced engineering strategies which have been proved effective in protecting LMAs are systematically reviewed, including electrolyte optimization, artificial interface, composite/alloy anodes and so on. Finally, we highlight the current limitations and promising research directions of LMAs. This review sheds new lights on deeply understanding the intrinsic mechanism of LMAs, and calls for more endeavors to realize practical li metal batteries.

关键词： lithium metal anode Solid electrolyte interphase Advanced electrolytes Artificial interface Composite anodes Theoretical simulations

Neutron Powder Diffraction Study on the Non-Superconducting Phases of ThFeAsN1-xOx（x=0.15,0.6）Iron Pnictide

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Chinese Physics Letters 2019年第10期36卷 77-80页

作者： Hui-Can Mao Bing-Feng Hu Yuan-Hua xia xi-Ping chen Cao Wang Zhi-cheng Wang Guang-Han Cao Shi-liang li Hui-Qian Luo department of Physics and Center for Advanced Quantum Studies Beijing Normal UniversityBeijing 100875 Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 Key Laboratory of Neutron Physics Institute of Nuclear Physics and ChemistryChina Academy of Engineering PhysicsMianyang 621999 department of Physics Shandong University of TechnologyZibo 255049 department of Physics and State Key Lab of Silicon Materials Zhejiang UniversityHangzhou 310027 Collaborative Innovation Centre of Advanced Microstructures Nanjing 210093 Songshan Lake Materials Laboratory Dongguan 523808 School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190

We use neutron powder diffraction to study the non-superconducting phases of ThFeAsN1-xOx with x = 0.15,*** our previous results of the superconducting phase ThFeAsN with Tc = 30 K,no magnetic transition is observed by cooling down to 6 K,and possible oxygen occupancy at the nitrogen site is shown in the refinement[***.117(2.17)57005].Here in the oxygen doped system ThFeAsN1-xOx,two superconducting regions(0≤x≤0.1 and 0.25≤x≤0.55)are identified by transport experiments[***.:***30(2.18)255602].However,within the resolution of our neutron powder diffraction experiment,neither the intermediate doping x= 0.15 nor the heavily overdoped compound x = 0.6 shows any magnetic order from 300 K to 4 ***,while it shares the common phenomenon of two superconducting domes as most 1111-type iron-based superconductors,the magneticall.y ordered parent compound may not exist in this nitride family.

关键词： x=0 compound refinement

Evidence for particle acceleration approaching PeV energies in the W51 complex

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Science Bulletin 2024年第18期69卷 2833-2841页

作者： LHAASO Collaboration Zhen Cao F.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao J.chang J.F.chang A.M.chen E.S.chen H.X.chen liang chen lin chen Long chen M.J.chen M.L.chen Q.H.chen S.chen S.H.chen S.Z.chen T.L.chen Y.chen N.cheng Y.D.cheng M.Y.Cui S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu X.Q.Dong K.K.Duan J.H.Fan Y.Z.Fan J.Fang J.H.Fang K.Fang C.F.Feng H.Feng L.Feng S.H.Feng X.T.Feng Y.Feng Y.L.Feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu F.L.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han M.Hasan H.H.He H.N.He J.Y.He Y.He Y.K.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu S.C.Hu D.H.Huang T.Q.Huang W.J.Huang X.T.Huang X.Y.Huang Y.Huang X.L.Ji H.Y.Jia K.Jia K.Jiang X.W.Jiang Z.J.Jiang M.Jin M.M.Kang I.Karpikov D.Kuleshov K.Kurinov B.B.li C.M.li cheng li Cong li D.li F.li H.B.li H.C.li Jian li Jie li K.li S.D.li W.L.li W.L.li X.R.li xin li Y.Z.li Zhe li Zhuo li E.W.liang Y.F.liang S.J.lin B.liu C.liu D.liu D.B.liu H.liu H.D.liu J.liu J.L.liu M.Y.liu R.Y.liu S.M.liu W.liu Y.liu Y.N.liu Q.Luo Y.Luo H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao Z.Min W.Mitthumsiri H.J.Mu Y.C.Nan A.Neronov L.J.Ou P.Pattarakijwanich Z.Y.Pei J.C.Qi M.Y.Qi B.Q.Qiao J.J.Qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng F.W.Shu H.C.Song Yu.V.Stenkin V.Stepanov Y.Su D.X.Sun Q.N.Sun X.N.Sun Z.B.Sun J.Takata P.H.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang J.C.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.J.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu Q.W.Wu S.Wu X.F.Wu Y.S.Wu S.Q.xi J.xia G.M.xiang D.X.xiao G.xiao Y.L.xin Y.xing D.R.xiong Z.xiong D.L.Xu R.F.Xu R.X.Xu W.L.Xu L.Xue D.H.Yan J.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang R.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.Yue H.D.Zeng T.X.Zeng W.Zeng M.Zha B.B.Zhang F.Zhang H.Zhang 不详 Key Laboratory of Particle Astrophysics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduChina Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Physics P.O.Box 103980Heidelberg 69029Germany School of Physical Science and Technology&School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nuclear Research of Russian Academy of Sciences Moscow 117312Russia Hebei Normal university Shijiazhuang 050024China university of Science and Technology of china Hefei 230026China State Key Laboratory of Particle Detection and Electronics China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Physics and Astronomy Yunnan UniversityKunming 650091China Key Laboratory of Cosmic Rays(Tibet university) Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Physics and Astronomy(Zhuhai)&School of Physics(Guangzhou)&Sino-French Institute of Nuclear engineering and Technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays(CRs)accelerated by the shock of supernova remnant(SNR)W51C and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability of W51C for CRs remains *** on observations conducted with the Large High Altitude Air Shower Observatory(LHAASO),we report a significant detection ofγrays emanating from the W51 complex,with energies from 2 to 200 *** LHAASO measurements,for the first time,extend theγ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay bump"featured data from Fermi-LAT,the broadbandγ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~200 TeV in the CR proton spectrum,most likely providing the first evidence of SNRs serving as CR accelerators approaching the PeV ***,two young star clusters within W51B could also be theoretically viable to produce the most energeticγrays observed by *** findings strongly support the presence of extreme CR accelerators within the W51 complex and provide new insights into the origin of Galactic CRs.

关键词： UHE c-ray Cosmic rays SNR W51C Star clusters