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Development of multi-functional anchorage support dynamic-static coupling performance test system and its application

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International Journal of Mining Science and Technology 2024年第3期34卷 339-349页

作者： Qi Wang Shuo Xu Bei Jiang Chong Zhang zhe sun Jingxuan Liu Cailin Jiao State Key Laboratory for Tunnel Engineering China University of Mining&Technology-BeijingBeijing 100083China Research Center of Geotechnical and Structural Engineering Shandong UniversityJinan 250061China

In underground engineering with complex conditions,the bolt(cable)anchorage support system is in an environment where static and dynamic stresses coexist,under the action of geological conditions such as high stresses and strong disturbances and construction conditions such as the application of high prestress.It is essential to study the support components performance under dynamic-static coupling conditions.Based on this,a multi-functional anchorage support dynamic-static coupling performance test system(MAC system)is developed,which can achieve 7 types of testing functions,including single component performance,anchored net performance,anchored rock performance and so on.The bolt and cable mechanical tests are conducted by MAC system under different prestress levels.The results showed that compared to the non-prestress condition,the impact resistance performance of prestressed bolts(cables)is significantly reduced.In the prestress range of 50–160 k N,the maximum reduction rate of impact energy resisted by different types of bolts is 53.9%–61.5%compared to non-prestress condition.In the prestress range of 150–300 k N,the impact energy resisted by high-strength cable is reduced by76.8%–84.6%compared to non-prestress condition.The MAC system achieves dynamic-static coupling performance test,which provide an effective means for the design of anchorage support system.

关键词： Anchorage support system Development of test system Dynamic-static coupling test Combined stress

Local quantum Fisher information and quantum correlation in the mixed-spin Heisenberg XXZ chain

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Frontiers of physics 2024年第2期19卷 235-245页

作者： Peng-Fei Wei Qi Luo Huang-Qiu-Chen Wang Shao-Jie Xiong Bo Liu zhe sun School of Physics Hangzhou Normal UniversityHangzhou 310036China zhejiang Institute of Modern Physics and School of Physics Zhejiang UniversityHangzhou 310027China School of Information and Electrical Engineering Hangzhou City UniversityHangzhou 310015China zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change Hangzhou 311121China

We study the local quantum Fisher information(LQFI)in the mixed-spin Heisenberg XXZ chain.Both the maximal and minimal LQFI are studied and the former is essential to determine the accuracy of the quantum parameter estimation,the latter can be well used to characterize the discord-type quantum correlations.We investigate the effects of the temperature and the anisotropy parameter on the maximal LQFI and thus on the accuracy of the parameter estimation.Then we make use of the minimal LQFI to study the discord-type correlations of different site pairs.Different dimensions of the subsystems cause different values of the minimal LQFI which reflects the asymmetry of the discord-type correlation.In addition,the site pairs at different positions of the spin chains have different minimal LQFI,which reveals the influence of the surrounding spins on the bipartite quantum correlation.Our results show that the LQFI obtained through a simple calculation process provides a convenient way to investigate the discord-type correlation in high-dimensional systems.

关键词： local quantum Fisher information quantum correlation mixed-spin Heisenberg XXZ chain

A Heterozygous Phospholamban Variant(p.R14del)Leads to Left Ventricular Involvement and Heart Failure Phenotypes in Arrhythmogenic Right Ventricular Cardiomyopathy

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Phenomics

Phenomics 2024年第1期4卷 13-23页

作者： Han Mo Xiumeng Hua Mengni Bao zhe sun Xiao Chen Mengda Xu Jiangping Song Shenzhen Key Laboratory of Cardiovascular Disease Fuwai Hospital Chinese Academy of Medical SciencesShenzhen 518057China State Key Laboratory of Cardiovascular Disease Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical College167A Beilishi RoadXi Cheng DistrictBeijing 100037China Beijing Key Laboratory of Preclinical Research and Evaluation for Cardiovascular Implant Materials Animal Experimental CentreFuwai HospitalNational Center for Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

This study aimed to determine the prevalence and clinical features of Arrhythmogenic Right Ventricular Cardiomyopathy(ARVC)caused by pathogenic mutations in the Phospholamban(PLN)gene.The study included 170 patients who had a confrmed diagnosis of ARVC and underwent PLN genetic screening using next-generation sequencing.The fndings of this study provide valuable insights into the association between PLN mutations and ARVC,which can aid in the development of more efective diagnostic and treatment strategies for ARVC patients.Out of the patients evaluated,six had a rare pathogenic mutation in PLN with the same p.R14del variant.Family screening revealed that heterozygous carriers of p.R14del exhibited a defnite ARVC phenotype.In clinical studies,individuals with the p.R14del mutation experienced a similar rate of malignant arrhythmia events as those with classic desmosome mutations.After adjusting for covariates,individuals with PLN mutations had a two point one seven times greater likelihood of experiencing transplant-related risks compared to those who did not possess PLN mutations(95%CI 1.08–6.82,p=0.035).The accumulation of left ventricular fat and fbers is a pathological marker for ARVC patients with p.R14del mutations.In a cohort of 170 Chinese ARVC patients,three point fve percent of probands had the PLN pathogenic variant(p.R14del)and all were female.Our data shows that PLN-related ARVC patients are at high risk for ventricular arrhythmias and heart failure,which requires clinical diferentiation from classic ARVC.Furthermore,carrying the p.R14del mutation can be an independent prognostic risk factor in ARVC patients.

关键词： Arrhythmogenic right ventricular cardiomyopathy Phospholamban Left ventricular involvement Heart failure Risk stratifcation

Persistence of charge density wave against variation of band structures in V_(x)Ti_(1−x)Se_(2)(x=0–0.1)

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Nano Research 2024年第3期17卷 2129-2135页

作者： Zhanfeng Liu Tongrui Li Wen Zhu Hongwei Shou Mukhtar Lawan Adam Qilong Cui Yuliang Li Sheng Wang Yunbo Wu Hongen Zhu Yi Liu Shuangming Chen Xiaojun Wu Shengtao Cui Li Song zhe sun National Synchrotron Radiation Laboratory CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230029China CAS Key Laboratory of Strongly-coupled Quantum Matter Physics University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China School of Chemistry and Materials Sciences CAS Key Laboratory of Materials for Energy Conversionand CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230026China School zhejiang Institute of Photonelectronics Jinhua 321004China

Charge density wave(CDW)is a phenomenon that occurs in materials,accompanied by changes in their intrinsic electronic properties.The study of CDW and its modulation in materials holds tremendous significance in materials research,as it provides a unique approach to controlling the electronic properties of materials.TiSe_(2) is a typical layered material with a CDW phase at low temperatures.Through V substitution for Ti in TiSe_(2),we tuned the carrier concentration in V_(x)Ti_(1-x)Se_(2) to study how its electronic structures evolve.Angle-resolved photoemission spectroscopy(ARPES)shows that the band-folding effect is sustained with the doping level up to 10%,indicating the persistence of the CDW phase,even though the band structure is strikingly different from that of the parent compound TiSe_(2).Though CDW can induce the band fold effect with a driving force from the perspective of electronic systems,our studies suggest that this behavior could be maintained by lattice distortion of the CDW phase,even if band structures deviate from the electron-driven CDW scenario.Our work provides a constraint for understanding the CDW mechanism in TiSe_(2),and highlights the role of lattice distortion in the band-folding effect.

关键词： charge density wave band structure lattice distortion

Poly(ionic liquid)-Based Energy and Electronic Devices

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Chinese Journal of Chemistry 2022年第9期40卷 1099-1108页

作者： Jiangna Guo zhe sun Yingjie Zhou Feng Yan Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Poly(ionic liquid)s(PILs)refer to a polymeric architecture with repeating ionic liquid species in each unit.They are attracting rapidly increasing interest because of their diverse structures and facial processability.Our group focused on the design and synthesis of PILs for various applications in the past decade,including polyelectrolytes,biomedical materials,and other related fields.In this review,we briefly summarized our recent studies on the application of PiLs for energy and electronic devices,emphasizing the controllable synthesis and regulation of specific structures and functions.The unique properties and designable structures of PILs will inspire further investigation in an extensive variety of potential applications.

关键词： Poly(ionic liquid)s Energy device Sensors Polymers Materials science

A systemic review of hydrogen supply chain in energy transition

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Frontiers in Energy 2023年第1期17卷 102-122页

作者： Haoming MA zhe sun zhenqian XUE Chi ZHANG Zhangxing CHEN Department of Chemical and Petroleum Engineering University of CalgaryCalgaryAB T2N 1N4Canada

Targeting the net-zero emission(NZE)by 2050,the hydrogen industry is drastically developing in recent years.However,the technologies of hydrogen upstream production,midstream transportation and storage,and downstream utilization are facing obstacles.In this paper,the development of hydrogen industry from the production,transportation and storage,and sustainable economic development perspectives were reviewed.The current challenges and future outlooks were summarized consequently.In the upstream,blue hydrogen is dominating the current hydrogen supply,and an implementation of carbon capture and sequestration(CCS)can raise its cost by 30%.To achieve an economic feasibility,green hydrogen needs to reduce its cost by 75%to approximately 2$/kg at the large scale.The research progress in the midterm sector is still in a preliminary stage,where experimental and theoretical investigations need to be conducted in addressing the impact of embrittlement,contamination,and flammability so that they could provide a solid support for material selection and largescale feasibility studies.In the downstream utilization,blue hydrogen will be used in producing value-added chemicals in the short-term.Over the long-term,green hydrogen will dominate the market owing to its high energy intensity and zero carbon intensity which provides a promising option for energy storage.Technologies in the hydrogen industry require a comprehensive understanding of their economic and environmental benefits over the whole life cycle in supporting operators and policymakers.

关键词： hydrogen production hydrogen transportation and storage hydrogen economy carbon capture and sequestration(CCS) technology assessment

Formation of Slipped Dimer in 6-Pentafluorophenyl-substituted Olympicenyl Radical

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Chinese Journal of Chemistry 2023年第22期41卷 3025-3030,I0002页

作者： Qin Xiang Yupeng Guo Jinlian Hu Zhaoyang Li zhe sun Institute of Molecular Plus Departmentof ChemistryTianjin University92 Wejin RoadTianjin300072China School of Materials Science and Engineering Nankai University38 Tongyan RoadHaihe Educational ParkTianjin 300350China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Introduction of substituents to organic radical is important to increase the stability and realize its applications as multifunctional materials.In this work,pentafluorophenyl group was introduced to 6-position of olympicenyl radical(OR)via a newly designed synthetic strategy to afford the fourth OR derivative,OR4.Due to the combined electro-withdrawing effect and steric hindrance of pentafluorophenyl,OR4 was stable and isolable in crystalline state.

关键词： Radical Odd-alternant hydrocarbon Dimerization Electrostatic interaction Pentafluorophenyl substituent

Attack-Resilient Control Against FDI Attacks in Cyber-Physical Systems

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IEEE/CAA Journal of Automatica Sinica 2022年第6期9卷 1099-1102页

作者： Bo Chen Yawen Tan zhe sun Li Yu IEEE Department of Automation Zhejiang University of TechnologyHangzhou 310023 Institute of Cyberspace Security Zhejiang University of TechnologyHangzhou 310023China

Dear editor,This letter is concerned with the control of cyber-physical systems(CPSs)in the presence of malicious false data injection(FDI)attacks on actuators.The FDI attacks on actuators may result in faults of actuators or even the instability of CPSs.To tackle this problem,an unknown input observer(UIO)is proposed to estimate the system states and attack signals.For the aim of suppressing the impact of FDI attacks,a discrete-time sliding mode control(DSMC)algorithm is correspondingly put forward,where its reaching law is constructed based on the n-th order difference of the estimation of attack signals.Finally,two simulation instances are presented to show the effectiveness of the proposed method.

关键词： editor instance concerned

Alternating influences of the Westerlies and Indian Summer Monsoon on the hydroclimate of the source region of the Yarlung Tsangpo over past 4000 yr

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Frontiers of Earth Science 2023年第4期17卷 933-944页

作者： zhe sun Zirui HUANG Kejia JI Mingda WANG Juzhi HOU Institute of Geography and Resources Science Sichuan Normal UniversityChengdu 610066China Group of Alpine Paleoecology and Human Adaptation(ALPHA) State Key Laboratory of Tibetan Plateau Earth SystemResources and Environment(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences(CAS)Beijing 100101China School of Geography Liaoning Normal UniversityDalian 116029China

The Yarlung Tsangpo,the longest river in the southern Tibetan Plateau(TP),has attracted much research attention aimed at understanding the factors controlling its modern hydrology and possible future discharge in the context of ongoing climate change.However,partly due to the complex regional climatic background,no consistent conclusions have been reached,especially for its upper reaches.Paleohydrological reconstructions of the source region of the Yarlung Tsangpo can potentially improve our understanding of the history of humidity and its response to climatic variability.In this study,we used a 97 cm gravity core from Gongzhu Co to reconstruct the hydrology change during the late Holocene.The core was dated using AMS ^(14)C and Pb/Cs methods,and we used measurements of element contents(determined by high-resolution XRF scanning),grain size,IC/TOC,and magnetic susceptibility to reconstruct hydroclimatic changes in the source of the Yarlung Tsangpo watershed since~4000 yr ago.Combined with a modern meteorological data set,we found that PC1 of the XRF data,the Ca/(Fe+Ti)ratio,and EM1 of the grain size data were indicative of changes in humidity.Our records demonstrate a wet interval during~4-1.7 ka BP(ka=1000 yr,BP represents years before 1950 AD),followed by a dry period during since~1 ka BP.Comparison with independent regional paleoclimatic records revealed shifts in the dominant factors controlling humidity.The wet interval during~4-1.7 ka BP was coeval with a strengthened Westerlies,implying a dominant moisture supply from northern high latitudes.However,the extremely low values of Ca/(Fe+Ti)ratio during~4-2.5 ka BP indicate potential glacial freshwater source,which is corroborated by the concurrent high magnetic susceptibility values and increased grain size.The rapid drying trend during~1.7-1 ka BP suggests a switch in moisture supply from the Westerlies to the Indian Summer Monsoon(ISM).We attribute the drought conditions after~1 ka BP to a weakened ISM,although a Westerlies influence and the potential effec

关键词： late Holocene humidity changes Westerlies ISM Yarluang Tsangpo