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Journal of Wuhan University of Technology(Materials Science) 2023年第2期38卷 401-407页

作者： li Changxin li Xiaoya li chaoyang li li College of Chemical Engineering and Pharmacy Jingchu University of TechnologyJingmen448000China College of Safety Science and Engineering Nanjing Tech UniversityNanjing211816China

A blast furnace slag zeolite(BFSZ)material was successfully synthesized from BFS by alkaline fusion and hydrothermal treatment.Via the analyses of XRD,FT-IR,FE-SEM,XRF,CEC and BET surface area measurement,when zeolite was synthesized at a crystallization temperature of 100℃with initial Si/Al ratio of 1:1,the main composition in the product is Na-A zeolite.Under the above conditions,the BFSZ was synthesized with CEC of 3.06 meq/g and maximum BET surface area of 37.55 m^(2)·g^(-1).Moreover,the incorporating of BFS-derived minor metals(such as Mg,Fe,and Ca)are found to be of little importance for the synthesis of BFSZ.Thus the obtained BFSZ material has a great adsorption performance for removing Mn^(2+),Cu^(2+),and NH_(4)^(+)ions diluted in water,owing to the higher CEC.

关键词： blast furnace slag conversion zeolite characterization adsorption

Thermo-Rheological Structure and Passive Continental Margin Rifting in the Qiongdongnan Basin, South China Sea, China

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Journal of Ocean University of China 2022年第2期21卷 347-360页

作者： li chaoyang JIANG Xiaodian GONG Wei School of Ocean Science and Technology Dalian University of TechnologyPanjin 124221China Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

To investigate the thermo-rheological structure and passive continental margin rifting in the Qiongdongnan Basin(QDNB),thermo-rheological models of two profiles across the western and eastern QDNB are presented.The continental shelf of western QDNB,having the lowest crustal extension factor,is recognized as the initial non-uniform extension crust model.This regime is referred to as the jelly sandwich-1(JS-1)regime,having a lower crustal ductile layer.The oceanward part of the western QDNB changes from the relatively strong JS-1 to the weak crème brûlée-1(CB-1)regime with a significantly thinned lower crust.However,the crustal extension in the eastern QDNB is significantly higher than that in the western QDNB,with conjugate faults extending deep into the lower crust.The central depression zone of the eastern QDNB is defined as the much stronger JS-2 regime,having a brittle deformation across the entire crust and upper mantle and characteristics of a cold and rigid oceanic crust.Unlike the widespread lower crustal high-velocity layers(HVLs)in the northern margin of the South China Sea,the HVLs are confined to the lower crustal base of the central depression zone of the QDNB.The HVLs of QDNB are the results of non-uniform extension with mantle underplating during the lower crustal-necking stage,which is facilitated by the lower crustal ductile layer and derived by mantle lat-eral flowing.The gigantic mantle low-velocity zone related to the Red River Fault should be a necessary factor for the east-west differential margin rifting process of QDNB,which may drive the lateral flowing in the mantle.

关键词： Qiongdongnan Basin thermo-rheological structure continental margin rifting high-velocity layer

Influence of Wind Turbine Structural Parameters on Wind Shear and Tower Shadow Effect

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Energy Engineering 2023年第2期120卷 501-510页

作者： Yajing Zhang chaoyang Song Zhiguo li School of Transportation and Municipal Engineering Inner Mongolia Technical College of ConstructionHohhot010070China School of Mechanical Engineering Inner Mongolia University of TechnologyHohhot010051China

To overcome the problems of natural decreases in power quality,and to eliminate wind speed fluctuation due to wind shear and tower shadow effect arising from wind turbine structural parameters,an improved prediction model accounting for the dual effect of wind shear and tower shadow is,in this paper,built.Compared to the conventional prediction model,the proposed model contains a new constraint condition,which makes the disturbance term caused by the tower shadow effect always negative so that the prediction result is closer to the actual situation.Furthermore,wind turbine structural parameters such as hub height,rotor diameter,the diameter of the tower top,and rotor overhang on wind shear and tower shadow effect are also explored in detail.The results show that the wind shear effect became weaker with the increase in hub height.The hub height is independent of the tower shadow effect.The rotor diameter is positively correlated with the wind shear and tower shadow effect.The tower shadow effect is positively correlated with the diameter of the tower top and negatively correlated with the rotor overhang.

关键词： Wind turbine wind shear tower shadow effect dual effect structural parameters

Stackelberg Game-Based Resource Allocation with Blockchain for Cold-Chain Logistics System

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Computers, Materials & Continua 2023年第5期75卷 2429-2442页

作者： Yang Zhang Chaoyang Li Xiangjun Xin College of Food and Bioengineering Zhengzhou University of Light IndustryZhengzhou450002China College of Software Engineering Zhengzhou University of Light IndustryZhengzhou450002China

Cold-chain logistics system(CCLS)plays the role of collecting and managing the logistics data of frozen food.However,there always exist problems of information loss,data tampering,and privacy leakage in traditional centralized systems,which influence frozen food security and people’s health.The centralized management form impedes the development of the cold-chain logistics industry and weakens logistics data availability.This paper first introduces a distributed CCLS based on blockchain technology to solve the centralized management problem.This system aggregates the production base,storage,transport,detection,processing,and consumer to form a cold-chain logistics union.The blockchain ledger guarantees that the logistics data cannot be tampered with and establishes a traceability mechanism for food safety incidents.Meanwhile,to improve the value of logistics data,a Stackelberg game-based resource allocation model has been proposed between the logistics data resource provider and the consumer.The competition between resource price and volume balances the resource supplement and consumption.This model can help to achieve an optimal resource price when the Stackelberg game obtains Nash equilibrium.The two participants also can maximize their revenues with the optimal resource price and volume by utilizing the backward induction method.Then,the performance evaluations of transaction throughput and latency show that the proposed distributed CCLS is more secure and stable.The simulations about the variation trend of data price and amount,optimal benefits,and total benefits comparison of different forms show that the resource allocation model is more efficient and practical.Moreover,the blockchain-based CCLS and Stackelberg game-based resource allocation model also can promote the value of logistic data and improve social benefits.

关键词： Cold-chain logistics resource allocation Stackelberg game blockchain

MXene fibers for electronic textiles:Progress and perspectives

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中国化学快报:英文版 2023年第8期34卷 82-89页

作者： Jianmin li chaoyang Miao Jing Bian Shayan Seyedin Ke li College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Engineering Newcastle UniversityNewcastle upon Tyne NE17RUUnited Kingdom Centre for Research on Adaptive Nanostructures and Nanodevices(CRANN)&Advanced Materials and BioEngineering Research(AMBER)Centre School of ChemistryTrinity College DublinDublinDublin 2Ireland

The rapid evolution of portable and wearable electronic devices has fueled the development of smart functional textiles that are able to conduct electricity,sense body movements,or store energy.One main challenge inhibiting the further development of functional textile-based electronics is the lack of robust functional fibers with suitable electrical,electrochemical and sensing functionalities.MXenes,an emerging family of two-dimensional(2D)materials,have shown to be promising candidates for producing functional fibers due to their exceptional electrical and electrochemical properties combined with solution processability.The unique ability of MXenes to readily form liquid crystal phases in various solvents has allowed them to generate additive-free fibers using a wet spinning process.In this work,we review the recent exciting developments in the fabrication of neat MXenes fibers and present a critical evaluation of practical challenges in MXenes processing that influence the macroscale material properties and the performance of the subsequent devices.We also provide our assessment for the future opportunities and challenges in producing MXene fibers to help pave the way for their widespread use in advanced wearable applications.

关键词： MXene liquid crystal Wet spinning Conductive fiber Functional textile Flexible electronics

Analysis of oil shedding and ligaments formation on bearing rotary elements

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Chinese Journal of Aeronautics 2023年第2期36卷 377-387页

作者： Donglei ZHU Guoding CHEN Yanjun li chaoyang ZHANG lin WANG School of Mechanical Engineering Northwestern Polytechnical UniversityXi'an 710072China China Gas Turbine Establishment Chengdu 610500China

For designing efficient lubrication system of an aeroengine bearing chamber,sufficient knowledge on oil/air two-phase flow characteristics is required.When analyzing bearing chamber two-phase flow,the essential prerequisite is quantifying the oil ligaments,which are detached from bearing rotary elements and shed into the bearing chamber.Related investigations are mainly targeted at liquid shedding on the rotating disk as opposed to the bearing rotary elements.Moreover,the research based on bearing rotary elements is conducted by experiment.Due to the limited operating conditions,experimental studies cannot guide engineering applications.To overcome these limitations,a theoretical model is established in this paper,for revealing the mechanism of oil shedding from bearing rotary elements and quantifying the shedding ligaments.The theoretical model is validated against experimental results from classical studies.In addition,the correlation for shedding ligaments number based on aeroengine bearing structural and operational parameters is obtained via theoretical analysis.The analytical results demonstrate that oil shedding and ligaments formation appear at the edge of bearing inner race outer-periphery.The number of shedding ligaments increases with the rise of shaft rotational speed while decreases with the growth of oil viscosity.

关键词： Aeroengine bearing chamber ligaments Lubrication Mechanical analysis Shedding Wave

A 3D CFD simulation of oil spray-collection and delivery process in an aeroengine inter-shaft bearing

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Chinese Journal of Aeronautics 2022年第9期35卷 366-378页

Under-race lubrication applied to the inter-shaft bearing of aeroengine is characterized by spray oil collection and oil delivery to the bearing via flow-path structure. Droplet splashing induced by the collision between spray oil and the scoop as well as oil flowing characteristics in the flow-path influence bearing lubrication efficiency. In previous investigations, the spray oil collection and oil delivery analysis were separated, and the effect of droplet splashing on bearing lubrication efficiency was not considered. Moreover, time-varying characteristics of oil delivered to the bearing were not accounted for. This is caused by time variations of the circumferential position of rollers and under-race feed holes. To overcome these limitations, a numerical model which integrates the spray oil collection and oil delivery analysis is proposed in this paper. The model is embedded with the function of calculating the flow rate of splashing droplets and analyzing time-varying characteristics of the oil fed to the bearing. Furthermore, the numerical model is validated by experimental investigation. The proposed numerical model facilitates the accurate calculation of bearing lubrication efficiency as well as the design of an efficient lubrication structure.

关键词： Integrated Inter-shaft bearing Splash-spray Time-varying Under-race lubrication

Hepatitis C virus-induced prion protein expression facilitates hepatitis C virus replication

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Virologica Sinica 2017年第6期32卷 503-510页

作者： Huixia Zhang Shanshan Gao Rongjuan Pei Xinwen Chen Chaoyang Li State Key Laboratory of Virology Center for Molecular Virology Wuhan Institute of VirologyChinese Academy of SciencesWuhan 430071China University of the Chinese Academy of Sciences Beijing 100000China

Hepatitis C virus(HCV) infects approximately 180 million people worldwide. Significant progress has been made since the establishment of in vitro HCV infection models in cells. However, the replication of HCV is complex and not completely understood. Here, we found that the expression of host prion protein(Pr P) was induced in an HCV replication cell model. We then showed that increased Pr P expression facilitated HCV genomic replication. Finally, we demonstrated that the KKRPK motif on the N-terminus of Pr P bound nucleic acids and facilitated HCV genomic replication. Our results provided important insights into how viruses may harness cellular protein to achieve propagation.

关键词： hepatitis C virus(HCV) NS3 NS5B prion protein(PrP)

Modeling of microstructure evolution of AZ80 magnesium alloy during hot working process using a unified internal state variable method

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Journal of Magnesium and Alloys 2022年第1期10卷 299-313页

作者： Zexing Su chaoyang Sun Mingjia Wang lingyun Qian Xintong li School of Mechanical Engineering University of Science and Technology Beijing30 Xueyuan RoadHaidian DistrictBeijing 100083China Beijing Key Laboratory of lightweight Metal Forming Beijing 100083China College of Nuclear Equipment and Nuclear Engineering Yantai UniversityYantai 264005China Shunde Graduate School of University of Science and Technology Beijing Foshan528000China

In this paper, a unified internal state variable(ISV) model for predicting microstructure evolution during hot working process of AZ80 magnesium alloy was developed. A novel aspect of the proposed model is that the interactive effects of material hardening, recovery and dynamic recrystallization(DRX) on the characteristic deformation behavior were considered by incorporating the evolution laws of viscoplastic flow, dislocation activities, DRX nucleation and boundary migration in a coupled manner. The model parameters were calibrated based on the experimental data analysis and genetic algorithm(GA) based objective optimization. The predicted flow stress, DRX fraction and average grain size match well with experimental results. The proposed model was embedded in the finite element(FE) software DEFORM-3 D via user defined subroutine to simulate the hot compression and equal channel angular extrusion(ECAE) processes. The heterogeneous microstructure distributions at different deformation zones and the dislocation density evolution with competitive deformation mechanisms were captured.This study can provide a theoretical solution for the hot working problems of magnesium alloy.

关键词： AZ80 magnesium alloy Internal state variable model Microstructure evolution Dynamic recrystallization Hot working process Finite element simulation

The Subduction Structure Beneath the New Britain Island Arc and the Adjacent Region from Double-Difference Tomography

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Journal of Ocean University of China 2023年第1期22卷 107-118页

作者： ZHANG Hao GONG Wei XING Junhui XU Chong li chaoyang Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China

We applied double-difference tomography to relocate seismic events and determine the lithospheric velocity structure beneath the New Britain Island arc and the South Bismarck Sea Basin,based on the local P wave arrival time dataset collected by the International Seismological Centre.Results of the seismic relocation and velocity inversion show that the subduction of Solomon Sea Plate along the New Britain Trench is spatially different above 150 km,and the subduction angle of the slab on the west side is higher than that on the east side.The relocated earthquakes also show that there are double seismic zones at the depths of about 30–90km beneath the New Britain Island Arc.The velocity structure shows that the dehydration of the subducting slab caused the low-velocity anomalies in mantle wedge above the slab,which are associated with the magmatic activities around the New Guinea-New Britain Island arc.Moreover,it shows that there is another low-velocity anomaly zone beneath the Bismarck mid-oceanic ridge with spatial variation.Beneath the west of the Bismarck mid-oceanic ridge,the low-velocity anomaly is weakly connected to the subducted Solomon Sea slab.Conversely,the low-velocity anomaly beneath the Manus Sea Basin is highly intertwined to the subducting slab and its mantle wedge,indicating that the subduction of the Solomon Sea Plate might be a key deep dynamic factor that drives the spreading of the Manus Sea Basin and the separation of the Bismarck Plate.

关键词： New Britain Trench Bismarck Sea Basin Manus Sea Basin double-difference tomography