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Nano-Micro Letters 2022年第6期14卷 219-233页

作者： Changyuan Yan Yangyang Wang Xianyu Deng Yonghang Xu Shenzhen Key Laboratory of Advanced Materials School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055People’s Republic of China School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China

Aqueous zinc ion batteries have high potential applicability for energy storage due to their reliable safety,environmental friendliness,and low cost.However,the freezing of aqueous electrolytes limits the normal operation of batteries at low temperatures.Herein,a series of high-performance and low-cost chloride hydrogel electrolytes with high concentrations and low freezing points are developed.The electrochemical windows of the chloride hydrogel electrolytes are enlarged by>1 V under cryogenic conditions due to the obvious evolution of hydrogen bonds,which highly facilitates the operation of electrolytes at ultralow temperatures,as evidenced by the low-temperature Raman spectroscopy and linear scanning voltammetry.Based on the Hofmeister effect,the hydrogen-bond network of the cooperative chloride hydrogel electrolyte comprising 3 M ZnCl_(2)and 6 M LiCl can be strongly interrupted,thus exhibiting a sufficient ionic conductivity of 1.14 mS cm;and a low activation energy of 0.21 e V at-50℃.This superior electrolyte endows a polyaniline/Zn battery with a remarkable discharge specific capacity of 96.5 mAh g;at-50℃,while the capacity retention remains~100%after 2000 cycles.These results will broaden the basic understanding of chloride hydrogel electrolytes and provide new insights into the development of ultralow-temperature aqueous batteries.

关键词： Chloride hydrogel Electrochemical window Cooperative effect Hydrogen-bond Ultralow temperature Aqueous zinc ion battery

A Trajectory Planning Method of Automatic Lane Change Based on Dynamic Safety Domain

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Automotive Innovation 2023年第3期6卷 466-480页

作者： Yangyang Wang Xiaolang Cao Yulun Hu School of Automotive Studies Tongji UniversityShanghai 200092China

Traditional research on automatic lane change has primarily focused on high-speed scenarios and has not considered the dynamic state changes of surrounding vehicles.This paper addresses this problem by proposing a trajectory planning method to enable automatic lane change at medium and low speeds.The method is based on a dynamic safety domain model,which takes into account the actual state change of surrounding vehicles,as well as the upper boundary of the safety domain for collision avoidance and the lower boundary of comfort for vehicle stability.The proposed method involves the quantification of the safety and comfort boundaries through parametric modeling of the vehicle.A quintic polynomial trajectory planning method is proposed and evaluated through simulation and testing,resulting in improved safety and comfort for automatic lane change.

关键词： Automatic lane change Dynamic safety domain Trajectory planning Autonomous driving

Evaluation of Automatic Lane-Change Model Based on Vehicle Cluster Generalized Dynamic System

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Automotive Innovation 2022年第1期5卷 91-104页

作者： Yangyang Wang Xiaolang Cao Xinyuan Ma School of Automotive Studies Tongji UniversityShanghaiChina

The lane-change transportation research usually focuses on the efficiency and stability of the macro traffic flow while ignoring the driving comfort of individual vehicles.And many studies of lane-change models are often limited to the performance of a single vehicle,which leads to a lack of macroscopic evaluation.To solve the above limitations,an automatic lane-change generalized dynamic model is adopted.In this model,the lane-change behavior of an individual vehicle is considered as the generalized excitation and the restraining force between vehicles is described with the car-following model.Macro and micro evaluation indexes are also adopted to evaluate the automatic lane-change behavior in traffic flow.Furthermore,this paper proposes a modified intelligent driver model(IDM)to describe the state change process during lane change.The hyperbolic tangent transition function is used to eliminate the vehicle state mutation.The simulation results show that the proposed automatic lane-change generalized dynamic model can reflect the macro and micro parameters of the traffic flow.And compared with the traditional IDM model,the proposed HC-IDM model achieves higher comfort performance and lower fluctuation of traffic flow.

关键词： Lane change model Generalized dynamic system IDM car-following model

Enhancing fly ash utilization in backfill materials treated with CO_(2)carbonation under ambient conditions

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International Journal of Mining Science and Technology 2023年第3期33卷 323-337页

作者： Ichhuy Ngo Liqiang Ma Jiangtao Zhai Yangyang Wang Key Laboratory of Deep Coal Resource Mining China University of Mining&TechnologyXuzhou 221116China

The environmental concerns resulting from coal-fired power generation that produces large amounts of CO_(2)and fly ash are of great interest.To mitigate,this study aims to develop a novel carbonated CO_(2)-fly ash-based backfill(CFBF)material under ambient conditions.The performance of CFBF was investigated for different fly ash-cement ratios and compared with non-CO_(2)reacted samples.The fresh CFBF slurry conformed to the Herschel-Bulkley model with shear thinning characteristics.After carbonation,the yield stress of the fresh slurry increased significantly by lowering fly ash ratio due to gel formation.The setting times were accelerated,resulting in approximately 40.6%of increased early strength.The final strength decreased when incorporating a lower fly ash ratio(50%and 60%),which was related to the existing heterogeneous pores caused by rapid fluid loss.The strength increased with fly ash content above 70%because additional C-S(A)-H and silica gels were characterized to precipitate on the grain surface,so the binding between particles increased.The C-S(A)-H gel was developed through the pozzolanic reaction,where CaCO_(3)was the prerequisite calcium source obtained in the CO_(2)-fly ash reaction.Furthermore,the maximum CO_(2)uptake efficiency was 1.39 mg-CO_(2)/g-CFBF.The CFBF material is feasible to co-dispose CO_(2)and fly ash in the mine goaf as negative carbon backfill materials,and simultaneously mitigates the strata movement and water lost in post-subsurface mining.

关键词： Fly ash utilization CO_(2)carbonation Ambient conditions Water conservative backfill mining Negative carbon backfill materials

Calculation of 3D transient Eddy current by the face-smoothed finite element-boundary element coupling method

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High Voltage 2020年第6期5卷 747-752页

作者： Yangyang Wang Xingliang Jiang State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing UniversityChongqing 400044People's Republic of China

To calculate the distribution of the magnetic field and eddy current density on the surface of an aluminium plate, a method that couples the face-smoothed finite element method (FS-FEM) to the boundary element method (BEM) is proposed in this study. This method combines the advantages of the FS-FEM and BEM, which can rapidly and accurately calculate the distributions of vertical magnetic field and eddy current field on the surface of an aluminium plate. The structural parameters and material properties of the coil and aluminium plate are considered. An accurate three-dimensional calculation model is established. Then, the vertical magnetic field and eddy current field distributions are calculated in this study. In the case of the same grid density, compared with the finite element-boundary element coupling algorithm, the simulation results show that the FS-FEM and the boundary element coupling method have obvious advantage in improving the calculation accuracy. The maximum relative error between the calculated results and measured results is only 4%. The proposed method in this study is available for reference to the transient open-domain eddy current field analysis.

关键词： element boundary coupling

SENEX-mediated CDK4/6 inhibition promotes senescence and confers apoptosis resistance in B-cell non-Hodgkin lymphoma

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BIOCELL 2024年第3期48卷 453-462页

作者： JIYU wang LIUYING YI KEKE HUANG Yangyang Wang HUIPING wang ZHIMIN ZHAI Department of Hematology The Second Affiliated Hospital of Anhui Medical UniversityHefei230601China Department of Hematology The Fourth Affiliated HospitalZhejiang University School of MedicineYiwu322000China

Background:The primary cause of treatment failure in patients with refractory or relapsed B-cell non-Hodgkin lymphoma(r/r B-NHL)is resistance to current therapies,and therapy-induced senescence(TIS)stands out as a crucial mechanism contributing to tumor drug resistance.Here,we analyzed SENEX/Rho GTPase Activating Protein 18(ARHGAP18)expression and prognostic signiﬁcance in doxorubicin-induced B-NHL-TIS model and r/r B-NHL patients,investigating its target in B-NHL cell senescence and the effect of combining speciﬁc inhibitors on apoptosis resistance in B-NHL-TIS cells.Methods:Raji cells were transfected with the human SENEX shRNA recombinant lentiviral vector(Sh-SENEX)and the empty vector negative(NC)to construct a stable transfection cell line with knockdown of SENEX.Effect of SENEX-silencing on B-NHL-TIS formation,cell function and cell cycle-related pathways was analyzed.Using doxorubicin(DOX)-inducible senescent B-NHL cells combined with the speciﬁc cyclin dependent kinase 4/6(CDK4/6)inhibitor Palbociclib to observe that blocking CDK4/6 effects on TIS formation.SENEX expression of 21 B-NHL patients and 8 healthy controls were analyzed by qRT-PCR,and the correlation between its expression and clinical indicators were evaluated.Results:The downregulation of SENEX expression promotes G1-S phase transition and apoptosis while inhibiting cell proliferation,collectively suppressing the formation of TIS in B-NHL.Blockade of CDK4/6 promotes the DOX-induced G1 phase arrest to enhance TIS formation in B-NHL cells which can reverse the regulatory effect of silencing SENEX on B-NHL cell cycle regulation and senescence.The expression levels of SENEX were notably elevated in B-NHL patients compared to healthy controls,and Elevated expression levels of SENEX were associated with poor prognosis of B-NHL patients.Conclusions:SENEX enhances apoptosis resistance in B-NHL by inhibiting CDK4/6,thereby preventing G1-S phase transition and promoting TIS formation.

关键词： SENEX B-cell non-Hodgkin lymphoma CDK4/6 G1-S phase transition Therapy-induced senescence Apoptosis resistance

Tetrahedral framework nucleic acids promote cognitive impairment recovery post traumatic brain injury

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Chinese Chemical Letters 2023年第4期34卷 141-147页

作者： Yangyang Wang Weiqiang Jia Jianwei Zhu Ruxiang Xu Yunfeng Lin Department of Neurosurgery Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 611731China Department of Neurosurgery The First People’s Hospital in Shuangliu District/West China Airport HospitalSichuan UniversityChengdu 610299China State Key Laboratory of Oral Diseases National Clinical Research Center for Oral Disease West China Hospital of StomatologySichuan UniversityChengdu 610041China

Cognitive impairment often occurs after post traumatic brain injury. In addition, recovery of cognitive impairment is largely dependent on spontaneous repair and the severity of secondary insult. The tetrahedral framework nucleic acid is a novel nanostructure has been shown to have a positive biological effect in promoting regeneration and anti-inflammation. To explore the treatment effect of tetrahedral framework nucleic acids for cognitive impairment recovery post traumatic brain injury, we established a mouse model of traumatic brain injury and verified the efficacy of tetrahedral framework nucleic acids in promoting cognitive impairment recovery post traumatic brain injury. The results show that the tetrahedral framework nucleic acids promoted the recovery of post-traumatic cognitive function by enhancing the proliferation of endogenous neural stem cells. Besides, tetrahedral framework nucleic acids modulated the neuroinflammatory response in the acute phase by inhibiting excessive astrocyte and microglial activation. Taken together, the results of the study indicate tetrahedral framework nucleic acids for treatment of cognitive impairment post traumatic brain injury.

关键词： Tetrahedral framework nucleic acids Traumatic brain injury Cognitive impairment Neural stem cell Neuroinflammation

Intelligent Voltage Control Method in Active Distribution Networks Based on Averaged Weighted Double Deep Q-network Algorithm

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Journal of Modern Power Systems and Clean Energy 2023年第1期11卷 132-143页

作者： Yangyang Wang Meiqin Mao Liuchen Chang Nikos D.Hatziargyriou Research Center for Photovoltaic System Engineering Ministry of EducationSchool of Electrical Engineering and AutomationHefei University of TechnologyHefei 230009China University of New Brunswick FrederictonNB E3B 5A3Canada National Technical University of Athens Athens 15780Greece IEEE

High penetration of distributed renewable energy sources and electric vehicles(EVs)makes future active distribution network(ADN)highly variable.These characteristics put great challenges to traditional voltage control methods.Voltage control based on the deep Q-network(DQN)algorithm offers a potential solution to this problem because it possesses humanlevel control performance.However,the traditional DQN methods may produce overestimation of action reward values,resulting in degradation of obtained solutions.In this paper,an intelligent voltage control method based on averaged weighted double deep Q-network(AWDDQN)algorithm is proposed to overcome the shortcomings of overestimation of action reward values in DQN algorithm and underestimation of action reward values in double deep Q-network(DDQN)algorithm.Using the proposed method,the voltage control objective is incorporated into the designed action reward values and normalized to form a Markov decision process(MDP)model which is solved by the AWDDQN algorithm.The designed AWDDQN-based intelligent voltage control agent is trained offline and used as online intelligent dynamic voltage regulator for the ADN.The proposed voltage control method is validated using the IEEE 33-bus and 123-bus systems containing renewable energy sources and EVs,and compared with the DQN and DDQN algorithms based methods,and traditional mixed-integer nonlinear program based methods.The simulation results show that the proposed method has better convergence and less voltage volatility than the other ones.

关键词： Averaged weighted double deep Q-network(AWDDQN) deep Q learning active distribution network(ADN) voltage control electrical vehicle(EV)

Nondestructive determination of IMP content in chilled chicken based on hyperspectral data combined with chemometrics

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International Journal of Agricultural and Biological Engineering 2022年第1期15卷 277-284页

作者： Yangyang Wang Hongju He Shengqi Jiang Hanjun Ma School of Food Science Henan Institute of Science and TechnologyXinxiang 453003HenanChina

This study was conducted to investigate the potential of hyperspectral imaging technique(900-1700 nm)for nondestructive determination of inosinic acid(IMP)in chicken.Hyperspectral images of chicken flesh samples were acquired,and their mean spectra within the images were extracted.The quantitative relationship between the mean spectra and reference IMP value was fitted by partial least squares(PLS)regression algorithm.A PLS model(MAS-PLS)built with moving average smoothing(MAS)spectra showed better performance in predicting IMP content,leading to correlation coefficients(RP)of 0.951,root mean square error(RMSEP)of 0.046 mg/g,and residual predictive deviation(RPD)of 3.152.Regression coefficient(RC),successive projections algorithm(SPA),stepwise,competitive adaptive reweighted sampling(CARS),and uninformative variable elimination(UVE)were used to select the optimal wavelengths to optimize the MAS-PLS model.Based on the 18 optimal wavelengths(907.14,917.02,918.67,926.90,930.20,936.78,956.54,1004.28,1135.89,1211.56,1302.07,1367.94,1397.60,1488.31,1680.17,1683.49,1686.80 and 1695.10 nm)selected from MAS spectra by SPA,the MAS-SPA-PLS model was built with R_(P) of 0.920,RMSEP of 0.056 mg/g and RPD of 3.220,which was similar to the MAS-PLS model.The overall study indicated that hyperspectral imaging in the 900-1700 nm range combined with PLS and SPA could be used to predict the IMP content in chicken flesh.

关键词： near-infrared hyperspectral imaging chicken inosinic acid partial least squares successive projections algorithm

Highly stable,stretchable,and transparent electrodes based on dualheaded Ag@Au core-sheath nanomatchsticks for non-enzymatic glucose biosensor

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Nano Research 2023年第1期16卷 1558-1567页

作者： Yangyang Wang Jingyi Kong Ruifang Xue Jianping wang Min Gong Xiang Lin Liang Zhang Dongrui wang School of Chemistry and Biological Engineering University of Science and Technology BeijingBeijing 100083China

Stretchable and transparent electrodes(STEs)based on silver nanowires(AgNWs)have garnered considerable attention due to their unique optoelectronic features.However,the low oxidation resistance of AgNWs severely limits the reliability and durability of devices based on such STEs.The present work reports a type of core-sheath silver@gold nanowires(Ag@Au NWs)with a morphology resembling dual-headed matchsticks and an average Au sheath thickness of 2.5 nm.By starting with such Ag@Au NWs,STEs with an optical transmittance of 78.7%,a haze of 13.0%,a sheet resistance of 13.5Ω·sq.−1,and a maximum tensile strain of 240%can be formed with the aid of capillary-force-induced welding.The resultant STEs exhibit exceptional oxidation resistance,high-temperature resistance,and chemical/electrochemical stability owing to the conformal and dense Au sheath.Furthermore,non-enzymatic glucose biosensors are fabricated employing the Ag@Au NW STEs.The electrocatalytic oxidation currents are proportional to glucose concentrations with a high sensitivity of 967μA·mM−1·cm−2 and a detection limit of 125μM over a detection range of 0.6 to 16 mM.Additionally,the biosensors demonstrate an appealing robustness and antiinterference characteristics,high repeatability,and great stability that make them adequate for practical use.

关键词： Ag@Au core-sheath nanowire stretchable transparent electrode glucose biosensor capillary force stretchable electronics