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Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： Zhao-Jun Zhang Wen-wei Wang Jing-Shui Zhen Bo-Cheng Li De-Cheng Cai yang-yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

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GPSA:A Greedy Pull-based Scheduling Approach for P2P Live Streaming under Heterogeneous Environments

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China Communications 2010年第2期7卷 42-52页

作者： Chen wei Su Sen yang Fangchun shuang Kai State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

Pull-based P2P live streaming is a promising solution for the large scale streaming systems, like PPStream, PPlive, due to its high scalability, low cost and high resilience. However, they usually suffer from bad delay performance. In this paper, we seek to improve the delay performance under ensuring video display quality stemming from chunk scheduling. And so we model Pull-based chunk scheduling problem as a multi-objective optimization problem to minimize the video delay and maximize video display quality in the environment of heterogeneous upload bandwidths, heterogeneous and dynamic propagation delays. Finally we put up with a greedy Pull-based scheduling approach(GPSA) to solve the optimization problem. The evaluation shows GPSA can outperform two classical chunk scheduling approaches and adapt to dynamic variance of propagation delays.

关键词： P2P live streaming pull-based scheduling heterogeneous environments delay performaDce

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Application of FLUKA and OpenMC in coupled physics calculation of target and subcritical reactor for ADS

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Nuclear Science and Techniques 2019年第1期30卷 113-120页

作者： Ze-Long Zhao Yong-wei yang shuang Hong Institute of Modern Physics Chinese Academy of Sciences School of Nuclear Science and Technology University of Chinese Academy of Sciences University of Science and Technology Hefei

The study of accelerator-driven subcritical reactor systems(ADSs) has been an important research topic in the field of nuclear energy for years. The main code applied in ADS research is MCNPX, which was developed by Los Alamos National Laboratory. We studied the application of the open-source Monte Carlo codes FLUKA and OpenMC to a coupled ADS calculation. The FLUKA code was used to simulate the reaction of highenergy protons with the nucleus of the target material in the ADS, which produces spallation neutrons. Information on the spallation neutrons, such as their energy, position,direction, and weight, can be recorded by a user-defined routine called FLUSCW provided by FLUKA. Then, the information was stored in an external neutron source file in HDF5 format by using a conversion code, as required by the OpenMC calculation. Finally, the fixed-source calculation function of OpenMC was applied to simulate the transport of spallation neutrons and obtain the distribution of the neutron flux in the core region. In the coupled calculation, the high-energy cross-section library JENDL4.0/HE in ACE format produced by NJOY2016 was applied in the OpenMC transport simulation. The OECD–ADS benchmark problem was calculated, and the results were compared with those obtained using MCNPX. It was found that the flux calculations performed by FLUKA–OpenMC and MCNPX were in agreement, so the coupling calculation method for ADS is reasonable and feasible.

关键词： Accelerator-driven subcritical system MCNPX FLUKA OpenMC JENDL4.0/HE N JOY2016

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A New Coherent Integration Method for Frequency Jittering Radar

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Chinese Journal of Electronics 2017年第5期26卷 1008-1016页

作者： yang Gang TIAN Jing WU shuang CUI wei WU Siliang School of Information and Electronics Beijing Institute of Technology Beijing Institute of Remote Sensing Equipment

For the frequency jittering radar,the problems of range migration and phase jittering among different pulses may occur during the long-time integration,which will affect the target energy ***,a new coherent integration algorithm,namely,Frequency jittering based Radon-Fourier transform(FJ-RFT),is *** on jointly searching in the motion parameter space,the problems mentioned above can be simultaneously resolved and the coherent integration can be then *** Cramer-Rao lower bound(CRLB) and the Blind speed sidelobes(BSSL) of the proposed FJ-RFT are analyzed in ***,numerical experiments are provided to demonstrate the effectiveness of the proposed method.

关键词： Frequency jittering Coherent integration Cramer-Rao lower bound(CRLB) Blind speed sidelobes(BSSL)

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Solar cycles during the seventeenth century revealed by equatorial aurora records

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Earth and Planetary Physics 2025年第1期9卷 182-187页

作者： Yong wei LiMei Yan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

Solar cycles are fundamental to astrophysics,space exploration,technological infrastructure,and Earth's climate.A better understanding of these cycles and their history can aid in risk mitigation on Earth,while also deepening our knowledge of stellar physics and solar system *** the solar cycles between 1600 and 1700-especially the post-1645 Maunder Minimum,characterized by significantly reduced solar activity-poses challenges to existing solar activity *** study utilizes a new red equatorial auroral catalog from ancient Korean texts to establish solar cycle patterns from 1623 to ***,a further reevaluation of the solar cycles between 1610 and 1755 identified a total of 13 cycles,diverging from the widely accepted record of 12 cycles during that *** research enhances our understanding of historical solar activity,and underscores the importance of integrating diverse historical sources into modern analyses.

关键词： solar cycle Maunder Minimum solar activity red equatorial aurora West Pacific geomagnetic anomaly

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Cucurbit[n]urils(n=7,8)can strongly bind neutral hydrophilic molecules in water

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Science China Chemistry 2022年第9期65卷 1733-1740页

作者： Ming-shuang Li Mao Quan Xi-Ran yang wei Jiang School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001China Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of CatalysisDepartment of ChemistrySouthern University of Science and TechnologyShenzhen 518055China

It is challenging to recognize neutral hydrophilic molecules in *** use of hydrogen bonds in water is generally accepted to be the key to *** contrast,hydrophobic cavity is usually considered to play an insignificant role or only to provide a nonpolar microenvironment for hydrogen ***,we report that hydrophobic cavity alone can also strongly bind neutral,highly hydrophilic molecules in *** found that cucurbit[n]urils(n=7,8)bind 1,4-dioxane,crown ethers and monosaccharides in water with remarkable *** best binding constant reaches 10^(7) M^(−1) for cucurbit[8]uril,which is higher than its binding affinities to common organic *** functional theory(DFT)calculations and control experiments reveal that the hydrophobic effect is the major contributor to the binding through releasing the cavity water and/or properly occupying the weakly hydrated ***,hydrophobic cavity still prefers nonpolar guests over polar guests with similar size and shape.

关键词： molecular recognition the hydrophobic effect hydrophilic molecules cucurbit[n]uril naphthotube

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From text to image:challenges in integrating vision into ChatGPT for medical image interpretation

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Neural Regeneration Research 2025年第2期20卷 487-488页

作者： Shunsuke Koga wei Du Department of Pathology and Laboratory Medicine Hospital of the University of PennsylvaniaPhiladelphiaPAUSA

Large language models(LLMs),such as ChatGPT developed by OpenAI,represent a significant advancement in artificial intelligence(AI),designed to understand,generate,and interpret human language by analyzing extensive text *** potential integration into clinical settings offers a promising avenue that could transform clinical diagnosis and decision-making processes in the future(Thirunavukarasu et al.,2023).This article aims to provide an in-depth analysis of LLMs’current and potential impact on clinical *** ability to generate differential diagnosis lists underscores their potential as invaluable tools in medical practice and education(Hirosawa et al.,2023;Koga et al.,2023).

关键词： image diagnosis text

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The role of fibronectin in multiple sclerosis and the effect of drug delivery across the blood-brain barrier

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Neural Regeneration Research 2023年第10期18卷 2147-2155页

作者： shuang-shuang wei Le Chen Feng-Yuan yang Si-Qi Wang Peng Wang Ningxia Key Laboratory of Craniocerebral Diseases School of Clinical MedicineNingxia Medical UniversityYinchuanNingxia Hui Autonomous RegionChina Ningxia Key Laboratory of Craniocerebral Diseases Ningxia Medical UniversityYinchuanNingxia Hui Autonomous RegionChina

Remyelination failure is one of the main characteristics of multiple sclerosis and is potentially correlated with disease *** research has shown that the extracellular matrix is associated with remyelination failure because remodeling of the matrix often fails in both chronic and progressive multiple *** aggregates are assembled and persistently exist in chronic multiple sclerosis,thus inhibiting *** many advances have been made in the mechanisms and treatment of multiple sclerosis,it remains very difficult for drugs to reach pathological brain tissues;this is due to the complexity of brain structure and function,especially the existence of the blood-brain ***,herein,we review the effects of fibronectin aggregates on multiple sclerosis and the efficacy of different forms of drug delivery across the blood-brain barrier in the treatment of this disease.

关键词： blood-brain barrier brain delivery exosomes extracellular matrix fibronectin aggregates fibronectin intestinal flora multiple sclerosis remyelination failure remyelination

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Synergistic promotion strategy of “dual-site” and “dual-path” to enhance the C–C coupling between CO2 and HCHO driven by photoelectrocatalysis

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Journal of Energy Chemistry 2025年第1期100卷 39-49页

作者： Hongqiang yang Jianfeng Zheng Guoyu Wang Yifei Gao Yatao yang Jia Li Xiaojin Han Yan Cui Zhanggen Huang National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal Institute of Coal Chemistry Chinese Academy of Science University of Chinese Academy of Science Shenyang University of Chemical Technology

Photoelectrocatalytic coupling CO2and volatile organic compounds （VOCs） is a promising green strategy for the synergistic conversion of the two carbon-containing resources to *** catalytic efficiency is always at the mercy of chemical inertness of CO2and the competitive hydrogen evolution of ***,a modified g-C3N4/ZnAl-LDH Z-scheme heterojunction catalyst with dual reaction site was rationally designed and precisely *** Faraday efficiency of ethanol reached 68.67%with a corresponding formation rate of 227.3μmol *** revealed by in-situ characterizations and density functional theory calculations,CO2and HCHO were absorbed at Zn site and N site,***,*CO generated from CO2and HCHO was converted to*CH3O and*CHO on the dual-active-site *** detailed reaction mechanism experiments indicated that C–C coupling only occurred between*CO and*CH3O in electrocatalysis *** from the“*CO+*CH3O”path,another“*CO+*CHO”coupling path was also detected in photoelectrocatalytic *** selectivity of ethanol was significantly enhanced due to the synthesis of dual-site catalyst and the dual-path coupling path between CO2and HCHO simultaneously driven by light and electricity.

关键词： Photoelectrocatalysis Z-scheme C–C coupling Ethanol

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马来酸罗格列酮固体分散体及其溶出速率

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沈阳药科大学学报 2002年第5期19卷 316-319页

作者：邹艳霜陈大为杨雯姝沈阳药科大学药学院辽宁沈阳110016

目的提高难溶性药物马来酸罗格列酮的体外溶出速率 ,满足脉冲制剂的设计要求。方法选用PVPK3 0为载体 ,用溶剂法制备了马来酸罗格列酮固体分散体 ,比较考察了原料药及其物理混合物和固体分散体的溶出差别 ,并通过红外光谱及X 射线粉末... 详细信息

目的提高难溶性药物马来酸罗格列酮的体外溶出速率 ,满足脉冲制剂的设计要求。方法选用PVPK3 0为载体 ,用溶剂法制备了马来酸罗格列酮固体分散体 ,比较考察了原料药及其物理混合物和固体分散体的溶出差别 ,并通过红外光谱及X 射线粉末衍射对固体分散体进行了鉴定。结果体外溶出结果表明固体分散体能显著增加药物在水中及人工肠液中的溶出速率 ;红外光谱分析结果表明药物与载体之间没有发生化学反应 ;X 射线粉末衍射图谱表明药物以无定形状态分散于载体PVPK3 0中。结论固体分散体体外溶出速率的提高可以满足脉冲制剂的设计要求。

关键词：马来酸罗格列酮固体分散体溶剂法溶出速率

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