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THEORETICAL CALCULATION OF POINT DEFECTS IN Ni_3Al

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Acta Metallurgica Sinica(English Letters) 1993年第5期6卷 332-336页

作者： sun jian lin dongliang shanghai jiaotong university,shanghai,China {2. {2.,professor,department of materials science,shanghai jiaotong university,shanghai 2.0030,China

Equilibrium equation of point defects in Ll_2.type intermetallic compounds was established to calculate the relations of the concentration of antisite defects and vacancies and bulk composi- tion in Ni_*** examination of temperature effects on the point defects cleared up the mis. understanding of the properties of the“constitutional point defects”in Ni_3Al.

关键词： intermetallic compound Ni_3Al vacancy antisite defect

One-year status of hepatic venous pressure gradient measurement from 85 hospitals in China

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Portal Hypertension & Cirrhosis 2024年第2期3卷 116-123页

作者： Jitao Wang Ting Cui linpeng Zhang Zhiping Yan Lei Li Jinjun Chen Junhui sun Hua Xiang He Zhu Hao Wu {2.cuo Gengzang Feng Zhang Wei Wu Guohong Cao Wuhua Guo Haibin Shi Hui Xue Guangjun Huang Qiang Yu Meng Niu Huiling Xiang Derun Kong Wei Gou Xuefeng Luo Fuliang He Min Yuan Wei Liu Yong Wang Hongjie Hu Xiaoli Zhu Tao Yu Qinxue sun Wei Qu Ting Lu Deqiang Ma Li Zhang Jun Ma Jun Yang Ketao Mu Xiaoliang Zhu Kai Xiong Huiguo Ding Shengjuan Yao Mingsheng Huang Fang Wang Zexin Wang Yong Huang {2.an Li Hongfeng Yi Birun Huang Zhongwei Zhao Duiping Feng Yanming Lei Changlong Hou Wenbo Guo Shirong Liu Gaojun Teng Kangshun Zhu Fan Wu Xiaogang Hu Wenfeng Zhang Shaoqi Yang Zhouchao Hu Pengfei Pang Shaowu Zhuang Weidong Wang Qingliang Zhu Kunpeng Zhang Chengyu Liu {2. Li Chao Ma Hong {2.g Xingong Zhao Weixin Ren Zhiwei Wang Lei Yu Fuhuang lin Chaoguang Yan Feng Wang Lei Yu Hui Huan Wenyong Shen Shaofei He Chengda Zhang Jinlun Bao {2.gtao Liu Jun Wu {2.bo Zhao {2. Zhang Xiaolong Qi Hebei Provincial Key Laboratory of Cirrhosis&Portal Hypertension Xingtai People's HospitalXingtaiHebeiChina Center of Portal Hypertension Department of RadiologyZhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsuChina department of Interventional Therapy Beijing Shijitan Hospital Affiliated to Capital Medical UniversityBeijingChina department of Intervention Taiyuan Third People's HospitalTaiyuanShanxiChina department of Intervention Zhongshan Hospital Affiliated to Fudan UniversityShanghaiChina department of Interventional Medicine The First Hospital of Lanzhou UniversityLanzhouGansuChina department of Infectious Diseases Nanfang Hospital of Southern Medical UniversityGuangzhouGuangdongChina Hepatobiliary and Pancreatic Intervention Center The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiangChina Interventional Vascular Surgery Hunan Provincial People's HospitalChangshaHunanChina department of Intervention Sixth People's Hospital of ShenyangShenyangLiaoningChina department of Gastroenterology West China Hospital of Sichuan UniversityChengduSichuanChina department of Intervention The Fourth People's Hospital of Qinghai ProvinceXiningQinghaiChina department of Gastroenterology Nanjing Drum Tower HospitalNanjingJiangsuChina department of Gastroenterology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiangChina department of Radiology Shulan(Hangzhou)HospitalHangzhouZhejiangChina department of Intervention Mengchao Hepatobiliary Hospital of Fujian Medical UniversityFuzhouFujianChina department of Interventional Radiology The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina department of Gastroenterology The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxiChina department of Gastroenterology Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina department of Interventional Radiology Fifth Medical Center

Aims:Surveys and research on the applications of the hepatic venous pressure gradient(HVPG)are important for understanding the current status and future development of this technology in *** article aimed to investigate the status of hepatic venous pressure gradient measurement in China in ***:We investigated the overall status of HVPG technology in China-including hospital distribution,hospital level,annual number of cases,catheters used,average cost,indications,and current challenges by using online *** counting the number and percentages of cases of these results,we hope to clarify the current status of HVPG measurements in ***:According to the survey,85 hospitals in China used HVPG technology in 2.2. distributed across 2. provinces.A total of 4989 HVPG measurements were performed in all of the surveyed hospitals in 2.2.,of which 2.13 cases(56.4%)were measured *** average cost of HVPG measurement was 5646.8±2.2..9 *** the clinical teams who performed the measurements(sometimes multiple per hospital),94.3%(82.87)used the balloon method,and the majority of the teams(72.4%,63/87)used embolectomy ***:This survey clarified the clinical application status of HVPG in China and confirmed that some medical institutions in China have established a foundation for this *** is still necessary to continue promoting and popularizing this technology in the future.

关键词： application status hepatic vein pressure gradient questionnaire survey

Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao Zhang Wen Huang Fu-Jie Yu Qi Zhao Xin-Dong Zhu Tao Feng Yao jiang Xiao-Ming Li Xue-Fei Miao He Zhu Si Lan Xue-Qian Wang Bao-Long Shen Zhe Jia Feng-Qi Zhang Wei Wang Qi Liu Yang Ren Xun-Li Wang Xiao-Ya Cui Xiao-Yang Wang Ya-Nan Chen Bing-Bing Fan Meng-Ru Li Qi-Long Gao Jia-Ming Guo Zeng-Bao Jiao Zhi-Min Guo Yu-Ping Zhao Qian Yu Rui Huang ling-Kun Zhang Yi-Ping Lu Xu-Bo Li Huai-Jun lin Yan Ma Wei-Ming Yang Zhi-Hua Shen Hai-Yan He Yong-Gang sun Yong-jiang Huang De-Zhuang Wang Qing-Feng Liu Fei-Yang Wang Hui Liu Hong-Hui Wu Li-Qiang Wang Yang Lu Nan Wang Tian-Li Wang Wei-Bing Liao Yi-Han Wang Yuan Wu Yu-Zhen Yin Jie Pan Yi Zhang Qing Wang jian-Yang Zhang Tao Yang Yasir Sohail Jin-Yu Zhang Hua Ji Qiang Li Wei-Di Liu Zhi-Gang Chen Xiong-Jun Liu Wen Ma Liang Mao Zhen-Duo Wu School of materials science and Engineering Nanjing University of Science and Technology jiangsu Key Laboratory for Advanced Metallic materials School of Materials Science and Engineering Southeast University department of Physics City University of Hong Kong School of materials science and Engineering Tianjin University School of Physics and Microelectronics Zhengzhou University department of Mechanical Engineering Research Institute for Advanced Manufacturing The Hong Kong Polytechnic University Center of Electron Microscopy and State Key Laboratory of Silicon materials School of Materials Science and Engineering Zhejiang University Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province) School of Materials Science and Engineering Dalian University of Technology Institute of Advanced Wear & Corrosion Resistance and Functional materials Jinan University School of Mechanics and Civil Engineering China University of Mining and Technology School of Physical sciences Great Bay University School of materials science andEngineering Harbin Institute of Technology State Key Laboratory of materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Beijing Advanced Innovation Center for materials Genome Engineering Research Institute for Carbon Neutrality University of Science and Technology Beijing department of Mechanical Engineering The University of Hong Kong School of Computing Macquarie University Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University State Key Laboratory for Advanced Metals and materials University of Science and Technology Beijing State Key Laboratory of materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Institute of materials Shanghai University department of materials science and Engineering C

Owing to their exceptional properties, high-entropy alloys(HEAs) and high-entropy materials have emerged as promising research areas and shown diverse applications. Here,the recent advances in the field are comprehensively reviewed,organized into five sections. The first section introduces the background of HEAs, covering their definition, significance,application prospects, basic properties, design principles, and microstructure. The subsequent section focuses on cutting-edge high-entropy structural materials, highlighting developments such as nanostructured alloys, grain boundary engineering,eutectic systems, cryogenic alloys, thin films, micro-nano-lattice structures, additive manufacturing, high entropy metallic glasses, nano-precipitate strengthened alloys, composition modulation, alloy fibers, and refractory systems. In the following section, the emphasis shifts to functional materials, exploring HEAs as catalysts, magneto-caloric materials, corrosion-resistant alloys, radiation-resistant alloys, hydrogen storage systems, and materials for biomedicine. Additionally, the review encompasses functional high-entropy materials outside the realm of alloys, including thermoelectric, quantum dots, nanooxide catalysts, energy storage materials, negative thermal expansion ceramics,and high-entropy wave absorption materials. The paper concludes with an outlook, discussing future directions and potential growth areas in the field. Through this comprehensive review,researchers, engineers, and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： Cutting-edge structural materials Cutting-edgefunctional materials High entropy alloys

Establishment and validation of a computer-assisted colonic polyp localization system based on deep learning

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World Journal of Gastroenterology 2021年第31期27卷 5232-5246页

作者： Sheng-Bing Zhao Wei Yang Shu-ling Wang Peng Pan Run-Dong Wang Xin Chang Zhong-Qian sun Xing-Hui Fu Hong Shang {2.-Rong Wu Li-Zhu Chen Jia Chang Pu Song Ying-Lei Miao Shui-Xiang He lin Miao Hui-Qing {2.g Wen Wang Xia Yang Yuan-Hang Dong Han lin Yan Chen Jie Gao Qian-Qian Meng Zhen-Dong Jin Zhao-Shen Li Yu Bai Changhai Hospital Second Military Medical University/Naval Medical UniversityShanghai 200433China Tencent AI Lab National Open Innovation Platform for Next Generation Artificial Intelligence on Medical ImagingShenzhen 518063Guangdong ProvinceChina department of Gastroenterology Changhai HospitalSecond Military Medical University/Naval Medical UniversityShanghai 200433China Tencent Healthcare(Shenzhen)Co.LTD. Shenzhen 518063Guangdong ProvinceChina department of Gastroenterology The First Affiliated Hospital of Kunming Medical UniversityKunming 650000Yunnan ProvinceChina department of Gastroenterology The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Institute of Digestive Endoscopy and Medical Center for Digestive Disease The Second Affiliated Hospital of Nanjing Medical UniversityNanjing 210011Jiangsu ProvinceChina department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyShijiazhuang 050000Hebei ProvinceChina department of Gastroenterology 900th Hospital of Joint Logistics Support ForceFuzhou 350025Fujian ProvinceChina department of Gastroenterology No.905 Hospital of The Chinese People's Liberation ArmyShanghai 200050China

BACKGROUND Artificial intelligence in colonoscopy is an emerging field,and its application may help colonoscopists improve inspection quality and reduce the rate of missed polyps and *** deep learning-based computer-assisted detection(CADe)techniques were established from small single-center datasets,and unrepresentative learning materials might confine their application and generalization in wide *** CADes have been reported to identify polyps in colonoscopic images and videos in real time,their diagnostic performance deserves to be further validated in clinical *** To train and test a CADe based on multicenter high-quality images of polyps and preliminarily validate it in clinical *** With high-quality screening and labeling from 55 qualified colonoscopists,a dataset consisting of over 71000 images from 2. centers was used to train and test a deep learning-based *** addition,the real-time diagnostic performance of CADe was tested frame by frame in 47 unaltered full-ranged videos that contained 86 histologically confirmed ***,we conducted a selfcontrolled observational study to validate the diagnostic performance of CADe in real-world colonoscopy with the main outcome measure of polyps per colonoscopy in Changhai *** The CADe was able to identify polyps in the test dataset with 95.0%sensitivity and 99.1%*** colonoscopy videos,all 86 polyps were detected with 92.2.sensitivity and 93.6%specificity in frame-by-frame *** the prospective validation,the sensitivity of CAD in identifying polyps was 98.4%(185/188).Folds,reflections of light and fecal fluid were the main causes of false positives in both the test dataset and clinical *** can detect more polyps(0.90 vs 0.82.P2.vs 0.30,P=0.045)with the aid of CADe,particularly polyps<5 mm and flat polyps(0.65 vs 0.57,P<0.001;0.74 vs 0.67,P=0.001,respectively).However,high effica

关键词： Computer-assisted detection Artificial intelligence Deep learning Colonoscopy Clinical validation Colorectal polyp

Expert consensus on digital guided therapy for endodontic diseases

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International Journal of Oral science 2023年第4期15卷 540-551页

作者： Xi Wei Yu Du Xuedong Zhou lin Yue Qing Yu Benxiang Hou Zhi Chen Jingping Liang Wenxia Chen Lihong Qiu Xiangya Huang Liuyan Meng Dingming Huang Xiaoyan Wang Yu Tian Zisheng Tang Qi Zhang Leiying Miao Jin Zhao Deqin Yang jian Yang Junqi ling department of Operative Dentistry and Endodontics Hospital of StomatologyGuanghuaSchool of StomatologySun Yat-Sen University&Guangdong Provincial Key Laboratory of StomatologyGuangzhouChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&department of Cariology and Endodontics West China Hospital of StomatologySichuan UniversityChengduChina department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina department of Operative Dentistry&Endodontics School of StomatologyThe Fourth Military Medical UniversityXi’anChina department of Endodontics Beijing Stomatological HospitalSchool of StomatologyCapital Medical UniversityBeijingChina The State Key Laboratory Breeding Base of Basic science of Stomatology(Hubei-MOST)&Key Laboratory of Oral Biomedicine Ministry of Education School and Hospital of StomatologyWuhan UniversityWuhanChina department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Clinical Research Center for Oral DiseasesNational Center for StomatologyShanghai Key Laboratory of StomatologyShanghaiChina College of Stomatology Hospital of StomatologyGuangxi Medical UniversityNanningChina department of Endodontics School of StomatologyChina Medical UniversityShenyangChina department of Stomatology Xinhua HospitalShanghai Jiaotong University School of MedicineShanghaiChina department of Endodontics Stomatological Hospital and Dental School of Tongji UniversityShanghai Engineering Research Center of Tooth Restoratio

Digital guided therapy(DGT)has been advocated as a contemporary computer-aided technique for treating endodontic diseases in recent *** concept of DGT for endodontic diseases is categorized into static guided endodontics(SGE),necessitating a meticulously designed template,and dynamic guided endodontics(DGE),which utilizes an optical triangulation tracking *** on cone-beam computed tomography(CBCT)images superimposed with or without oral scan(OS)data,a virtual template is crafted through software and subsequently translated into a 3-dimensional(3D)printing for SGE,while the system guides the drilling path with a real-time navigation in *** was reported to resolve a series of challenging endodontic cases,including teeth with pulp obliteration,teeth with anatomical abnormalities,teeth requiring retreatment,posterior teeth needing endodontic microsurgery,and tooth *** reports and basic researches all demonstrate that DGT stand as a precise,time-saving,and minimally invasive approach in contrast to conventional freehand *** expert consensus mainly introduces the case selection,general workflow,evaluation,and impact factor of DGT,which could provide an alternative working strategy in endodontic treatment.

关键词： template utilize precise

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong jianin AGH university of science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing Computational science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang university HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China university of Geosciences Beijing China university of Geosciences WuhanHubei China university of Mining and Technology XuzhouJiangsu China West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China university Of science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2.s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2.15)and the Conceptual Design Report(CDR,2.18),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2.2.-2.2.,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2.30s.

关键词： initiated exceeding precise

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波长编码的单次高时空分辨全光学探针

物理学报 2023年第22期72卷 102-110页

作者：易友建丁福财朱坪张栋俊梁潇孙美智郭爱林杨庆伟康海涛姚修宇李兆良谢兴龙朱健强中国科学院上海光学精密机械研究所高功率激光物理联合实验室上海201800 中国科学院大学材料与光电研究中心北京100049 西安交通大学物理学院西安710049 上海理工大学光电与计算机工程学院上海200093

激光探针法是捕捉超快动力学过程的主要方法之一,在等离子体物理、光化学、生物医学等领域都有着广泛的应用.本文提出一种时间波长编码的探针光产生方案,该方案通过级联不同相位匹配角的倍频晶体和独立的延迟线来实现时间波长编码,具有... 详细信息

激光探针法是捕捉超快动力学过程的主要方法之一,在等离子体物理、光化学、生物医学等领域都有着广泛的应用.本文提出一种时间波长编码的探针光产生方案,该方案通过级联不同相位匹配角的倍频晶体和独立的延迟线来实现时间波长编码,具有单次高时空分辨率、高帧率、时间窗口可调范围广、时间分辨率和时间窗口参数独立可调的优点.在实验中搭建了一套探针光产生装置,具有2.7 fs的时间分辨率、4μm的空间分辨率、4.05 THz的最高帧率、时间窗口从亚皮秒到3 ns可调,将该装置用于捕捉飞秒激光诱导的光丝的动力学过程,证明该探针光产生方案用于捕捉超快动力学过程的可行性.在讨论中,分析了探针光关键参数能达到的极限帧率为35.7 THz,极限时间分辨率为2. fs,时间窗口的范围可以从百飞秒到几十个纳秒进行调节.探针光的高时空分辨率和参数互相独立可调的优点,为多时间尺度的超快动力学过程的单次高时空分辨捕捉提供了一种可行方案.

关键词：单次波长时间编码高时空分辨全光学探针

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 2.0 *** 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~2.0 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

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中国改革开放以来的高分子物理和表征研究

高分子学报 2019年第10期50卷 1047-1067页

作者：安立佳陈尔强崔树勋董侠傅强韩艳春何嘉松胡文兵胡祖明江明李宝会李良彬李林李卫华林嘉平吕中元门永锋沈志豪孙平川童真王笃金武培怡谢续明徐坚徐志康薛奇闫寿科杨玉良俞炜俞燕蕾张广照张军张俐娜张平文张文科赵江郑强周东山中国科学院长春应用化学研究所长春130022 北京大学化学与分子工程学院北京100871 西南交通大学材料先进技术教育部重点实验室成都610031 中国科学院化学研究所北京100090 四川大学高分子科学与工程学院成都610065 南京大学化学化工学院南京210023 东华大学纤维材料改性国家重点实验室上海200051 复旦大学高分子科学系上海200433 南开大学物理学院天津300071 中国科技大学国家同步辐射实验室合肥230026 北京师范大学化学学院北京100875 华东理工大学材料科学与工程学院上海200237 吉林大学理论化学研究所长春130023 华南理工大学材料科学与工程学院广州510640 清华大学化工系北京100084 浙江大学高分子科学与工程学系杭州310027 北京化工大学材料科学与工程学院北京100029 上海交通大学化学化工学院上海200240 武汉大学化学与分子科学学院武汉430072

本综述介绍了改革开放四十多年来中国大陆学者在高分子物理和表征领域所取得的部分成就.按照时间顺序,分别从概念的突破、理论的发展和技术的创新三个方面选取具有代表性研究成果进行简短的介绍,以期展示当代中国学者在这一基础研究领... 详细信息

本综述介绍了改革开放四十多年来中国大陆学者在高分子物理和表征领域所取得的部分成就.按照时间顺序,分别从概念的突破、理论的发展和技术的创新三个方面选取具有代表性研究成果进行简短的介绍,以期展示当代中国学者在这一基础研究领域所表现出来的拼搏意志和创新精神,激励新一代学者共同努力,勇攀科学高峰,为国民经济和社会发展作出更大的贡献.

关键词：高分子物理高分子表征相分离结晶流变和力学性质