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Ex.rcise preconditioning alleviates ischemia-induced memory.deficits by.increasing circulating adiponectin

Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui zhang Sonata S y.y.u Kwok-Fai So Li zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key.Laboratory.of CNS Regeneration(Ministry.of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina State Key.Laboratory.of Brain and Cognitive Science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Ex.rcise and Brain Science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** ex.rcise enhances neurogenesis and sy.aptogenesis,and has been widely.used for functional rehabilitation after *** this study.we determined whether ex.rcise training before disease onset can alleviate the severity.of cerebral *** also ex.mined the role of ex.rcise-induced circulating factors in these *** mice were subjected to 14 day. of treadmill ex.rcise training before surgery.for middle cerebral artery.*** found that this ex.rcise pre-conditioning strategy.effectively.attenuated brain infarct area,inhibited gliogenesis,protected sy.aptic proteins,and improved novel object and spatial memory.*** analy.is showed that circulating adiponectin play. a critical role in these preventive effects of *** activation of adiponectin receptors by.Adipo Ron mimicked the effects of ex.rcise,while inhibiting receptor activation abolished the ex.rcise *** summary.our results suggest a crucial role of circulating adiponectin in the effects of ex.rcise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of ex.rcise.

关键词： adiponectin cerebral ischemia ex.rcise pre-conditioning hippocampus memory.function middle cerebral artery.occlusion prefrontal cortex sy.aptic proteins treadmill ex.rcise

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Inflammatory.Factor IL1αInduces Aberrant Astrocy.e Proliferation in Spinal Cord Injury.Through the Grin2c/Ca^(2+)/CaMK2b Pathway

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Neuroscience Bulletin 2024年第4期40卷 421-438页

作者： y. x.a Lu Ding Changlin zhang Qi x. Ming Shi Tianshun Gao Feng-Quan Zhou David y.B.Deng Scientific Research Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Department of Gy.ecology The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Pelvic Floor Disorders Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Big Data Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Sir Run Run Shaw Hospital Zhejiang University School of MedicineHangzhou310016China Orthopaedic and Neurological Repair Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China

Spinal cord injury.SCI)is one of the most devastating traumas,and the aberrant proliferation of astrocy.es usually.causes neurological ***,the mechanism underly.ng astrocy.e over-proliferation after SCI is ***2c(glutamate ionotropic receptor ty.e 2c)play. an essential role in cell *** bioinformatic analy.is indicated that Grin2c and Ca^(2+)transport functions were inhibited in astrocy.es after *** of Grin2c stimulated astrocy.e proliferation by.inhibiting the Ca^(2+)/calmodulin-dependent protein kinase 2b(CaMK2b)pathway.in *** screening different inflammatory.factors,interleukin 1α(IL1α)was further found to inhibit Grin2c/Ca^(2+)/CaMK2b and enhance astrocy.e proliferation in an ox.dative damage *** of IL1αusing neutralizing antibody.resulted in increased Grin2c ex.ression and the inhibition of astrocy.e proliferation ***,this study.suggests that IL1αpromotes astrocy.e proliferation by.suppressing the Grin2c/Ca^(2+)/CaMK2b pathway.after SCI,revealing a novel pathological mechanism of astrocy.e proliferation,and may.provide potential targets for SCI repair.

关键词： IL1α Grin2c Astrocy.e Spinal cord injury

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邛海国家湿地公园社会生态系统服务价值变化数据集(2009、2019)研发

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全球变化数据学报（中英文） 2024年第1期8卷 98-103,V0098-V0103页

作者：李勇冯晓张予倩赵振斌新疆师范大学地理科学与旅游学院乌鲁木齐830054 陕西师范大学地理科学与旅游学院西安710119

邛海国家湿地公园规划建设引起了征地搬迁和土地利用变化,关注社区居民感知的社会生态系统服务价值变化,对于湿地生态系统的可持续管理和增进居民福祉具有重要意义。作者采用访谈、参与式制图、理论探讨等方法进行数据采集,并进行数据... 详细信息

邛海国家湿地公园规划建设引起了征地搬迁和土地利用变化,关注社区居民感知的社会生态系统服务价值变化,对于湿地生态系统的可持续管理和增进居民福祉具有重要意义。作者采用访谈、参与式制图、理论探讨等方法进行数据采集,并进行数据空间化,得到邛海国家湿地公园社会生态系统服务价值变化数据集(2009、2019)。数据集由29个数据文件组成,内容包括:(1)访谈调查表;(2)调研对象社会经济特征;(3)2009年公园建设前社会生态系统服务价值类型表;(4)2019年公园建设后社会生态系统服务价值类型表;(5)2009年公园建设前社会生态系统服务价值类型点数据;(6)2019年公园建设后社会生态系统服务价值类型点数据;(7)公园土地利用与注记点数据。数据存储为.x.sx..shp格式,数据量为991 KB。

关键词：社会生态系统服务价值参与式制图湿地公园邛海

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Evolutionary.history.shapes variation of wood density.of tree species across the world

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Plant Diversity 2024年第3期46卷 283-293页

作者： Fangbing Li Hong Qian Jordi Sardans Dzhamal y.Amishev Zix.an Wang Changy.e zhang Tonggui Wu x.aoniu x. x.ao Tao x.ngzhao Huang Anhui Province Key.Laboratory.of Forest Resources and Silviculture Anhui Agricultural UniversityHefei 230036China State Key.Laboratory.of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China Research and Collections Center Illinois State Museum1011 East Ash StreetSpringfieldIL 62703USA CREAF Cerdanyola del VallesBarcelona 08193Spain Global Ecology.Unit CREAF-CSIC-UAB CSICBellaterraBarcelona 08193Spain Key.Laboratory.of Ecosy.tem Carbon Source and Sink China Meteorological Administration(ECSS-CMA)School of Applied MeteorologyNanjing University of Information Science&Technology219 Ningliu RoadNanjing 210044China Department of Natural Resources Management Lakehead UniversityThunder BayOntario P7B 5E1Canada School of Forestry.Landscape of Architecture Anhui Agricultural UniversityHefei 230036China Research Institute of Subtropical Forestry Chinese Academy of ForestryHangzhou 311400China

The effect of evolutionary.history.on wood density.variation may.play.an important role in shaping variation in wood density.but this has largely.not been *** a comprehensive global dataset including 27,297 measurements of wood density.from 2621 tree species worldwide,we test the hy.othesis that the legacy.of evolutionary.history.play. an important role in driving the variation of wood density.among tree *** assessed phy.ogenetic signal in different tax.nomic(e.g.,angiosperms and gy.nosperms)and ecological(e.g.,tropical,temperate,and boreal)groups of tree species,ex.lored the biogeographical and phy.ogenetic patterns of wood density.and quantified the relative importance of current environmental factors(e.g.,climatic and soil variables)and evolutionary.history.i.e.,phy.ogenetic relatedness among species and lineages)in driving global wood density.*** found that wood density.display.d a significant phy.ogenetic *** density.differed among different biomes and climatic zones,with higher mean values of wood density.in relatively.drier regions(highest in subtropical desert).Our study.revealed that at a global scale,for angiosperms and gy.nosperms combined,phy.ogeny.and species(representing the variance ex.lained by.tax.nomy.and not direct ex.lained by.long-term evolution process)ex.lained 84.3%and 7.7%of total wood density.variation,respectively.whereas current environment ex.lained 2.7%of total wood density.variation when phy.ogeny.and species were taken into *** angiosperms and gy.nosperms were considered separately.the three proportions of ex.lained variation are,respectively.84.2%,7.5%and 6.7%for angiosperms,and 45.7%,21.3%and 18.6%for *** study.shows that evolutionary.history.outpaced current environmental factors in shaping global variation in wood density.

关键词： Wood density Phy.ogeny Angiosperms Gy.nosperms Climate factors Biophy.ical parameters

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Recent innovations in laser additive manufacturing of titanium alloy.

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International Journal of Ex.reme Manufacturing 2024年第3期6卷 2-37页

作者： Jinlong Su Fulin Jiang Jie Teng Lequn Chen Ming y.n Guillermo Requena Lai-Chang zhang y.Morris Wang Ily. V Okulov Hongmei Zhu Chaolin Tan College of Materials Science and Engineering Hunan UniversityChangsha 410082People’s Republic of China Singapore Institute of Manufacturing Technology.SIM Tech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Institute of Materials Research German Aerospace Center(DLR)Linder Höhe51147 CologneGermany Centre for Advanced Materials and Manufacturing Edith Cowan University270 Joondalup DriveJoondalupPerthWestern Australia 6027Australia Department of Materials Science and Engineering University of CaliforniaLos AngelesCA 900095United States of America Leibniz Institute for Materials Engineering-IWT Badgasteiner Str.328359 BremenGermany Faculty.of Production Engineering University of BremenBadgasteiner Str.128359 BremenGermany Key.Laboratory.of Hunan Province of Equipment Safety.Service Technology.under Ex.reme Environment University of South ChinaHengyangPeople’s Republic of China RWTH Aachen University Metallic Structures and Materials Systems for Aerospace EngineeringD-52062 AachenGermany

Titanium(Ti)alloy. are widely.used in high-tech fields like aerospace and biomedical *** additive manufacturing(LAM),as an innovative technology.is the key.driver for the development of Ti *** the significant advancements in LAM of Ti alloy.,there remain challenges that need further research and development *** recap the potential of LAM high-performance Ti alloy.this article sy.tematically.reviews LAM Ti alloy. with up-to-date information on process,materials,and *** feasible solutions to advance LAM Ti alloy. are reviewed,including intelligent process parameters optimization,LAM process innovation with aux.liary.fields and novel Ti alloy. customization for *** aux.liary.energy.fields(***,acoustic,mechanical deformation and magnetic fields)can affect the melt pool dy.amics and solidification behaviour during LAM of Ti alloy.,altering microstructures and mechanical *** kinds of novel Ti alloy. customized for LAM,like peritecticα-Ti,eutectoid(α+β)-Ti,hy.rid(α+β)-Ti,isomorphousβ-Ti and eutecticβ-Ti alloy. are reviewed in ***,machine learning in accelerating the LAM process optimization and new materials development is also *** review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti *** addition,the perspectives and further trends in LAM of Ti alloy. are also highlighted.

关键词： additive manufacturing titanium alloy. aux.liary.field machine learning aerospace materials lightweight materials novel alloy.

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First-Principles Study.of the Influence of Lattice Misfit on the Behavior and the Ductility.Effect of Hafnium in Ni-Ni3AI Sy.tem

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Acta Metallurgica Sinica(English Letters) 2014年第1期27卷 87-94页

作者： y. Wu J. Guo W. zhang x. Ma Q. zhang J. Hou R. Huang x. Liu Institute of Molecular Engineering and Applied Chemistry Anhui University of Technology Ma'anshan 243002 China Sheny.ng National Laboratory.for Materials Science Instituteof Metal Research Chinese Academy of SciencesShenyang 110016 China College of Phy.ics Science and Technology Shenyang NormalUniversity Huanghe Street 253 Shengyang 110034 China School of Materials Science and Engineering Anhui Universityof Technology Ma'anshan 243002 China

Two Ni/Ni3Al-interface-contained cluster models with/without lattice misfit are studied by.first-principles method to clarify.the debates about the segregation behaviors of Hafnium （Hf） and ex.lore the influence of lattice misfit on the ductility.effect of Hr. It is found that though Hf prefers to substitute A1 rather than Ni in Ni3A1 phase within most of the investigated misfit range, its stronger preferring to Ni phase than NiaA1 phase makes it impossible to go into Ni3A1 phase to occupy.A1 site in Ni-Ni3A1 alloy.. Bond order analy.is in Hf-free case shows that lattice misfit has different effects on the Griffith work of interfacial cleavage 27int/E and the max.mum theoretical shear stress Zmax.of Ni and Ni3A1, contributing to the ex.stence of anomalous strength-temperature phenomena in NiaA1 alloy.. However, the addition of Hf will make the 27int/E （or Zmax. of both Ni3A1 and Ni decrease （or increase） with lattice misfit, indicating that the addition of Hf may.make the anomalous strength-temperature relationship in Ni3A1 region disappear locally.

关键词： Hafnium Lattice misfit Segregation Ductility

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Multi-circular formation control with reinforced transient profiles for nonholonomic vehicles:A path-following framework

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Defence Technology.防务技术） 2024年第1期31卷 278-287页

作者： Jintao zhang x.ngling Shao Wendong zhang Zongy. Zuo School of Instrument and Electronics North University of ChinaTaiyuan 030051China State Key.Laboratory.of Dy.amic Measurement Technology North University of ChinaTaiyuan 030051China Seventh Research Division School of Automation Science and Electrical EngineeringBeihang UniversityBeijing 100191China

This article investigates a multi-circular path-following formation control with reinforced transient profiles for nonholonomic vehicles connected by.a digraph.A multi-circular formation controller endowed with the feature of spatial-temporal decoupling is devised for a group of vehicles guided by.a virtual leader evolving along an implicit path,which allows for a circumnavigation on multiple circles with an anticipant angular *** addition,notice that it ty.ically.imposes a stringent time constraint on time-sensitive enclosing scenarios,hence an improved prescribed performance control(IPPC)using novel tighter behavior boundaries is presented to enhance transient capabilities with an ensured appointed-time convergence free from any.*** significant merits are that coordinated circumnavigation along different circles can be realized via ex.cuting geometric and dy.amic assignments independently.with modified transient ***,all variables ex.sting in the entire sy.tem are analy.ed to be *** and ex.erimental results are provided to validate the utility.of suggested solution.

关键词： Multi-circular formation Reinforced transient profiles Nonholonomic vehicles Path following

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Ground-state mass of ^(22)Al and test of state-of-the-art ab initio calculations

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Chinese Phy.ics C 2024年第3期48卷 72-78页

作者：孙铭泽于越王新鹏王猛李健国张玉虎 K.Blaum 陈祖毅陈瑞九邓涵宇付超义葛文文黄文嘉焦红扬李红蕙李宏福罗胤芳廖挺 y.ALitvinov 司敏帅鹏史金阳王茜邢元明徐星徐瑚珊许甫荣袁琪 T.y.maguchi 颜鑫亮杨建成原有进周小红周旭张敏曾奇 CAS Key.Laboratory.of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Max.Planck-Institut für Kernphy.ik Saupfercheckweg 169117 HeidelbergGermany GSI Helmholtzzentrum für Schwerionenforschung Planckstraße 164291 DarmstadtGermany Advanced Energy.Science and Technology.Guangdong Laboratory Huizhou516007China State Key.Laboratory.of Nuclear Phy.ics and Technology School of PhysicsPeking UniversityBeijing 100871China Department of Phy.ics Saitama UniversitySaitama 338-8570Japan School of Nuclear Science and Engineering East China University of TechnologyNanchang 330013China

The ground-state mass ex.ess of the T_(z)=−2 drip-line nucleus ^(22)Al is measured for the first time as 18103(10)keV using the newly.developed Bρ-defined isochronous mass spectrometry.method at the cooler storage ring in *** new mass ex.ess value allowed us to determine the ex.itation energies of the two low-ly.ng 1+states in ^(22)Al with significantly.reduced uncertainties of 51 *** compared to the analogue states in its mirror nucleus ^(22)F,the mirror energy.differences of the two 1^(+)states in the ^(22)Al-^(22)F mirror pair are determined to be−625(51)keV and−330(51)*** ex.itation energies and mirror energy.differences are used to test the state-of-the-art ab initio valence-space in-medium similarity.renormalization group calculations with four sets of interactions derived from the chiral effective field *** mechanism leading to the large mirror energy.differences is investigated and attributed to the occupation of theπs_(1/2) orbital.

关键词： nuclear mass Bρ-defined IMS mirror energy.difference ab initio VS-IMSRG calculations chiral interactions

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Multicolor upconversion reversible modulations in y.bO_(4):Er^(3+)/Tm^(3+)/y.^(3+) photochromic materials

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Journal of Rare Earths 2024年第2期42卷 270-277,I0002页

作者： Zhen zhang Peng Li Ziy. x. Zhihao zhang Qiwei zhang Haiqin Sun x.hong Hao Inner Mongolia Key.Laboratory.of Ferroelectric-related New Energy.Materials and Devices Schoolof Materials and MetallurgyInner Mongolia University of Science and TechnologyBaotou014010China College of Phy.ics and Technology Guangxi Normal UniversityGuilin541004China

Photochromic materials with multicolor upconversion reversible modulations are attractive in optical switching ***,the fabricated y.bO_(4):Er^(3+)/Tm^(3+)/y.^(3+) materials ex.ibit ex.ellent photochromism and multicolor upconversion properties from green,red to near infrared(NIR) emissions with increasing y. *** multiband upconversion modulations are achieved by.alternating light(365 and 405 nm) or thermal *** 365 nm irradiation,the luminescence color changes from y.llow to red,the luminescent photoswitching contrast reaches up to 86.21%(green),82.12%(red) and 77.38%(NIR) in the y.(0.83)Er_(0.01)Tm_(0.01)NbO_(4):0.15 y. ***,the upconversion emission intensity.before and after photochromic reaction shows remarkable change in a wide temperature range of 298-718 *** results indicate that the Er^(3+)/Tm^(3+)/y.^(3+) tri-doped y.bO_(4) materials can be a good candidate in optical switching and data storage applications.

关键词： Photochromic materials Luminescence modulation Multicolor emission Photoswitching contrast Rare earths

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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 Ax.kegu 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 x.n 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 y..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.x. J.x.a G.M.x.ang D.x.x.ao G.x.ao y.L.x.n y.x.ng D.R.x.ong Z.x.ong D.L.x. R.F.x. R.x.x. W.L.x. L.x.e D.H.y.n J.Z.y.n T.y.n C.W.y.ng C.y.y.ng F.y.ng F.F.y.ng L.L.y.ng M.J.y.ng R.Z.y.ng W.x.y.ng y.H.y.o Z.G.y.o L.Q.y.n N.y.n x.H.y.u Z.y.y.u y.H.y. Q.y.an H.y.e H.D.Zeng T.x.Zeng W.Zeng M.Zha B.B.zhang F.zhang H.zhang 不详 Key.Laboratory.of Particle Astrophy.ics&Ex.erimental Phy.ics 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 Phy.ics P.O.Box 103980Heidelberg 69029Germany School of Phy.ical Science and Technology.School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy.and Space Science Nanjing UniversityNanjing 210023China Center for Astrophy.ics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee Institute&School of Phy.ics 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 Galax.es and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Phy.ics and Astronomy Yunnan UniversityKunming 650091China Key.Laboratory.of Cosmic Ray.(Tibet University. Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Phy.ics and Astronomy.Zhuhai)&School of Phy.ics(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 ray.(CRs)accelerated by.the shock of supernova remnant(SNR)W51C and the dense molecular clouds in the adjacent star-forming region,***,the max.mum acceleration capability.of W51C for CRs remains *** on observations conducted with the Large High Altitude Air Shower Observatory.LHAASO),we report a significant detection ofγray. emanating from the W51 complex.with energies from 2 to 200 *** LHAASO measurements,for the first time,ex.end theγ-ray.emission from the W51 complex.bey.nd 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 ex.onential 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 y.ung star clusters within W51B could also be theoretically.viable to produce the most energeticγray. observed by.*** findings strongly.support the presence of ex.reme CR accelerators within the W51 complex.and provide new insights into the origin of Galactic CRs.

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

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