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Durable Ru Nanocrystal with HfO_(2)Modification for Acidic Overall Water Splitting

Nano-Micro Letters 2024年第9期16卷 462-477页

作者： Xiangkai Kong jie Xu Zhicheng Ju Changle chen School of Materials and Physics China University of Mining and TechnologyXuzhou 221116JiangsuPeople’s Republic of China Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation Huaibei Normal UniversityHuaibei 235000AnhuiPeople’s Republic of China School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026AnhuiPeople’s Republic of China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210023JiangsuPeople’s Republic of China

Durable and efficient bi-functional catalyst,that is capable of both oxygen evolution reaction and hydrogen evolution reaction under acidic condition,are highly desired for the commercialization of proton exchange membrane water ***,we report a robust L-Ru/HfO_(2)heterostructure constructed via confining crystalline Ru nanodomains by HfO_(2)*** assembled with a proton exchange membrane,the bi-functional L-Ru/HfO_(2)catalyst-based electrolyzer presents a voltage of 1.57 and 1.67 V to reach 100 and 300 mA cm^(-2)current density,prevailing most of previously reported Ru-based materials as well as commercial Pt/C||RuO_(2)*** is revealed that the synergistic effect of HfO_(2)modification and small crystalline domain formation significantly alleviates the over-oxidation of *** importantly,this synergistic effect facilitates a dual-site oxide path during the oxygen evolution procedure via optimization of the binding configurations of oxygenated *** a result,the Ru active sites maintain the metallic state along with reduced energy barrier for the rate-determining step(^(*)O→^(*)OOH).Both of water adsorption and dissociation(Volmer step)are strengthened,while a moderate hydrogen binding is achieved to accelerate the hydrogen desorption procedure(Tafel step).Consequently,the activity and stability of acidic overall water splitting are simultaneously enhanced.

关键词： Ruthenium Hafnium dioxide Oxygen evolution catalysis Anti-oxidation

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In Vivo Voltammetric Imaging of Metal Nanoparticle-Catalyzed Single-Cell Electron Transfer by Fermi Level-Responsive Graphene

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Research 2024年第1期2023卷 271-280页

作者： Qing Xia Rui Liu Xueqin chen Zixuan chen Jun-jie Zhu State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023P.R.China Shenzhen Research Institute of Nanjing University Shenzhen 518000P.R.China

Metal nanomaterials can facilitate microbial extracellular electron transfer(EET)in the electrochemically active ***,the role of nanomaterials/bacteria interaction in this process is still ***,we reported the single-cell voltammetric imaging of Shewanella oneidensis MR-1 at the single-cell level to elucidate the metal-enhanced EET mechanism in vivo by the Fermi level-responsive graphene *** oxidation currents of~20 fA were observed from single native cells and gold nanoparticle(AuNP)-coated cells in linear sweep voltammetry *** the contrary,the oxidation potential was reduced by up to 100 mV after AuNP *** revealed the mechanism of AuNP-catalyzed direct EET decreasing the oxidation barrier between the outer membrane cytochromes and the *** method offered a promising strategy to understand the nanomaterials/bacteria interaction and guide the rational construction of EET-related microbial fuel cells.

关键词： Fermi voltammetry Electron

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Single-structure 3-axis Lorentz force magnetometer based on an AlN-on-Si MEMS resonator

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Microsystems & Nanoengineering 2024年第3期10卷 75-86页

作者： cheng Tu Xu-heng Ou-Yang Ying-jie Wu Xiao-sheng Zhang School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

This work presents a single-structure 3-axis Lorentz force magnetometer(LFM)based on an AlN-on-Si MEMS *** operation of the proposed LFM relies on the flexible manipulation of applied excitation currents in different directions and frequencies,enabling the effective actuation of two mechanical vibration modes in a single device for magnetic field measurements in three ***,the excited out-of-plane drum-like mode at 277 kHz is used for measuring the x-and y-axis magnetic fields,while the in-plane square-extensional mode at 5.4 MHz is used for measuring the z-axis magnetic *** different configurations of applied excitation currents ensure good crossinterference immunity among the three *** to conventional capacitive LFMs,the proposed piezoelectric LFM utilizes strong electromechanical coupling from the AlN layer,which allows it to operate at ambient pressure with a high *** understand and analyze the measured results,a novel equivalent circuit model for the proposed LFM is also reported in this work,which serves to separate the effect of Lorentz force from the unwanted capacitive *** demonstrated 3-axis LFM exhibits measured magnetic responsivities of 1.74 ppm/mT,1.83 ppm/mT and 6.75 ppm/mT in the x-,y-and z-axes,respectively,which are comparable to their capacitive counterparts.

关键词： resonator Lorentz structure

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Optimal extent of lymphadenectomy improves prognosis and guides adjuvant chemotherapy in esophageal cancer: A propensity scorematched analysis

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1537-1547页

作者： Ji-Ming Tang Shu-jie Huang Qi-Bin chen Han-sheng Wu Gui-Bin Qiao Department of Thoracic Surgery Guangdong Provincial People’s HospitalGuangzhou 510080Guangdong ProvinceChina Department of Thoracic Surgery The First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina

BACKGROUND The optimal extent of lymphadenectomy in esophageal squamous cell carcinoma(ESCC)patients remained *** To explore the ideal number of cleared lymph nodes in ESCC patients undergoing upfront *** In this retrospective,propensity score-matched study,we included 1042 ESCC patients who underwent esophagectomy from November 2008 and October *** who underwent neoadjuvant therapy were *** collected pa-tients’clinicopathological features and information regarding lymph nodes,in-cluding the total number of resected lymph nodes(NRLN),and pathologically diagnosed positive lymph nodes(RPLN).SPSS and R software were used for statistical *** Among the included 1042 patients,two cohorts:≤21(n=664)and>21 NRLN(n=378)were *** final prognostic model included four variables:T stage,N,venous thrombus,and the number of removed lymph *** them,NRLN>21 was determined as an independent prognosticator after surgery for esophageal cancer(hazards regression=0.66,95%confidence interval:0.50-0.87,P=0.004).A nomogram was created based on the regression coefficients of the variables in the final *** the training cohort,the predictive model dis-played an uncorrected five-year overall survival C-index of 0.659,with a bootstrap-corrected C-index of *** the subgroup analysis,adjuvant chemotherapy was beneficial in the subgroup with NRLN>21 and RPLN≤0.16 and NRLN≤21 and RPLN>*** NRLN>21 was an independent prognostic factor after ESCC *** combination of NRLN and RPLN may provide a reference for adjuvant chemotherapy use in potential beneficiaries.

关键词： Esophageal squamous cell carcinoma Lymphadenectomy Adjuvant chemotherapy Prognosis Nomogram

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Control of 2-D Semi-Markov Jump Systems:A View from Mode Generation Mechanism

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 258-260页

作者： Yunzhe Men Jian Sun jie chen the National Key Laboratory of Autonomous Intelligent Unmanned Systems the School of AutomationBeijing Institute of TechnologyBeijing 100081 the Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China the Department of Control Science and Engineering Tongji UniversityShanghai 201804 the National Key Laboratory of Autonomous Intelligent Unmanned Systems Beijing Institute of TechnologyBeijing 100081China

Dear Editor,Two-dimensional(2-D) systems have wide applications in image data processing,gas absorption and fluid dynamics analysis [1]-[3].When there exist abrupt changes in 2-D systems,they are usually modeled by 2-D Markov jump systems(MJSs) or 2-D semi-Markov jump systems(SMJSs).This letter investigates the control of 2-D SMJSs based on a novel mode generation mechanism,which could avoid mode ambiguousness phenomenon caused by the evolution of system mode in two different *** criterion that guarantees the almost surely exponential stability of the system is obtained.A thermal process is studied to demonstrate the availability of the proposed method.

关键词： Markov mode system

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氧化苦参碱减轻糖尿病肾病小鼠肾组织炎症及纤维化反应的机制研究

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中国现代医学杂志 2024年第6期34卷 31-37页

作者：代云莉彭灿梁丹李志阳冯昭卫王一凡冯莉陈佳佳陈圣杰肖瑛贵州省常见慢性疾病发病机制及药物研究重点实验室贵州贵阳550025 宁波市临床病理诊断中心浙江宁波315021 贵阳市第二人民医院科研管理科贵州贵阳550023

目的通过观察氧化苦参碱(OMT)对同源结构域相互作用蛋白激酶2 (HIPK2)、Toll样受体4(TLR4)、NOD样受体热蛋白结构域相关蛋白3(NLRP3)、上皮钙黏素(E-cadherin)、纤维连接蛋白(Fibronectin)、白细胞介素-1β(IL-1β)和IL-18表达的影响,... 详细信息

目的通过观察氧化苦参碱(OMT)对同源结构域相互作用蛋白激酶2 (HIPK2)、Toll样受体4(TLR4)、NOD样受体热蛋白结构域相关蛋白3(NLRP3)、上皮钙黏素(E-cadherin)、纤维连接蛋白(Fibronectin)、白细胞介素-1β(IL-1β)和IL-18表达的影响,初步探讨OMT在糖尿病肾病(DKD)中抗炎抗纤维的可能保护机制。方法健康6周龄的db/db小鼠适应性喂养2周,随机分为糖尿病组(DM组)和OMT组,每组10只。OMT组给予腹腔注射氧化苦参碱[120 mg/(kg·d)],持续8周,并设同月龄同背景db/m小鼠为正常对照组(NC组)。处死小鼠前收集血液和尿液,检测各项生化指标,HE和Masson染色观察小鼠肾组织病理形态学改变,Western blotting检测、免疫组织化学染色观察各组小鼠肾皮质TLR4、HIPK2、NLRP3、Ecadherin、Fibronectin的表达水平及部位;酶联免疫吸附试验检测各组小鼠血清IL-1β、IL-18水平。采用Pearson法对HIPK2与TLR4、NLRP3蛋白表达进行相关性分析。结果 DM组体重、血糖、24 h尿蛋白量、总胆固醇、甘油三酯水平较NC组均升高(P <0.05),OMT组24 h尿蛋白量、总胆固醇、甘油三酯水平较DM组降低(P <0.05)。病理染色显示,DM组可见肾小球系膜区节段性增生,基底膜无明显增厚,肾小管管腔明显扩张,肾小管上皮细胞空泡样变性,间质区炎症细胞浸润和蓝色胶原纤维沉积;经OMT治疗后,相较于DM组,OMT组肾小球系膜区增生程度减轻,肾小管病变有所改善,间质区炎症细胞浸润减少。DM组TLR4、HIPK2、NLRP3、Fibronectin蛋白相对表达量较NC组升高(P <0.05),E-cadherin蛋白相对表达量较NC组降低(P <0.05);OMT组小鼠TLR4、HIPK2、NLRP3、Fibronectin蛋白相对表达量较DM组降低(P <0.05),E-cadherin蛋白相对表达量较DM组升高(P <0.05)。DM组血清中IL-1β、IL-18相对表达量较NC组升高(P <0.05),OMT组较DM组降低(P <0.05)。Pearson相关相关性分析显示,DM组肾组织中HIPK2蛋白与TLR4、NLRP3蛋白表达均呈正相关(r=0.881和0.774,均P <0.05)。OMT组HIPK2蛋白与TLR4、NLRP3蛋白表达均呈正相关(r=0.814、0.871,均P <0.05)。结论 OMT抑制DM小鼠肾组织的炎症反应和纤维化程度,可能与抑制HIPK2及炎症信号通路的活化有关。

关键词：糖尿病肾病氧化苦参碱 Toll样受体4 同源结构域相互作用蛋白激酶2 含NOD样受体热蛋白结构域相关蛋白3

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A survey of decision making in adversarial games

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Science China(Information Sciences) 2024年第4期67卷 85-112页

作者： Xiuxian LI Min MENG Yiguang HONG jie chen College of Electronics and Information Engineering Tongji University Shanghai Research Institute for Intelligent Autonomous Systems

In many practical applications, such as poker, chess, drug interdiction, cybersecurity, and national defense, players often have adversarial stances, i.e., the selfish actions of each player inevitably or intentionally inflict loss or wreak havoc on other players. Therefore, adversarial games are important in realworld applications. However, only special adversarial games, such as Bayesian games, are reviewed in the literature. In this respect, this study aims to provide a systematic survey of three main game models widely employed in adversarial games, i.e., zero-sum normal-form and extensive-form games, Stackelberg(security) games, and zero-sum differential games, from an array of perspectives, including basic knowledge of game models,(approximate) equilibrium concepts, problem classifications, research frontiers,(approximate) optimal strategy-seeking techniques, prevailing algorithms, and practical applications. Finally, promising future research directions are also discussed for relevant adversarial games.

关键词： adversarial games zero-sum games Stackelberg games differential games Nash equilibrium correlated equilibrium regret

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A Method of Emergency Volunteer Team Internal Participation in Rescue Decision-Making Considering Psychological Behavior

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Journal of Systems Science and Information 2024年第1期12卷 64-80页

作者： jie BAI shengqun chen College of Computer and Information Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002China School of Information Engineering Fujian Business UniversityFuzhou 350506China Engineering Research Center of Big Data Analytics for Business Intelligence Fujian Province UniversityFuzhou 350506China

A method for internal participation in rescue decision-making of emergency volunteer teams considering psychological behavior is proposed to address the time sequence of rescue ***,the problem of multi-tasking and multi-operation within the emergency volunteer team is ***,considering that task leaders are influenced by behavioral and psychological factors in the evaluation,the required time for the job is used as a reference point,and the expected time that volunteers can complete the job is used as an attribute *** task leader's prospect satisfaction value for each volunteer is calculated based on prospect theory,and the perceived utility values of disappointment theory and regret theory are calculated to measure the task leader's satisfaction with each ***,a multilayer coded genetic algorithm is used to construct an optimization model for emergency volunteer decision-making with the objective of maximizing the satisfaction ***,the feasibility and effectiveness of this method are illustrated by an example *** result shows that the efficiency of rescue tasks can be improved through decision optimization within the volunteer team.

关键词： emergency volunteers rescue task multi-layer coding genetic algorithm satisfaction value psychological behavior

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Determination of ice jam thickness—A new approach

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Journal of Hydrodynamics 2024年第3期36卷 570-581页

作者： Jun Wang Lian-sheng Sang Fei-hu Song Tie-jie cheng Jueyi Sui School of Civil and Water Engineering Hefei University of TechnologyHefei230009China School of Engineering University of Northern British ColumbiaPrince GeorgeCanada

In winter,rivers in cold regions often experience flood disasters resulted from ice jams or ice *** of the variation of ice jam thickness and water level during an ice jammed period are not only a practical need for ice prevention to avoid disaster and plan water resource,but also essential for the development of any mathematical model for predicting the evolution of ice *** far,some equations based on the energy equation have been proposed to describe the relationship between ice jam thickness and water ***,in the derivation of these equations,the local head loss coefficient at the ice jam head and the riverbed slope factor were ***,those reported equations cannot be used to preciously describe the flow energy equation with ice jams and accurately calculate the ice jam thickness and water *** the present study,a more comprehensive theoretical model for hydraulic calculation of ice jam thickness has been derived by considering important and essential factors including riverbed slope and local head loss coefficient at the ice jam ***,based on the data collected from laboratory experiments of ice jam accumulation,the local head loss coefficient at the ice jam head has been calculated,and the empirical equation for calculating the local head loss coefficient has been established by considering flow Froude number and the ratio of ice discharge to flow *** results of this study not only provide a new reference for calculating ice jam thickness and water level,but also present a theoretical basis for accurate CFD simulation of ice jams.

关键词： Energy equation ice jam thickness local head loss coefficient ice jam head riverbed slope

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A Microstrip Leaky-Wave Antenna with Scanning Beams Horizontal to the Antenna Plane

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Chinese Journal of Electronics 2024年第5期33卷 1218-1223页

作者： Henghui WANG Peiyao chen sheng SUN School of Electronic Science and Engineering University of Electronic Science and Technology of China

A leaky-wave antenna with horizontal scanning beams and broadside radiation is presented on the periodically modulated microstrip. The horizontal radiation is realized by periodically etching a set of resonant open-ended slots on the ground plane. Dispersion diagrams and Bloch impedance are first analyzed to investigate the propagation and radiation characteristics of the periodic structure. Subsequently, shunt matching stubs are installed aiming to obtain seamless beam scanning property through the broadside. Finally, a prototype is implemented as verification of the presented antenna. Results of the simulations and measurements agree well with each other, indicating the elimination of the open-stop band effect and the horizontal radiation beams. The fabricated antenna exhibits a beam range from -62° to +34°, and provides a maximum measured gain about 14.6 dBi at 10 GHz.

关键词： Antenna measurements Wireless communication Prototypes Microstrip antennas Gain measurement Leaky wave antennas Reflection coefficient Bloch impedance Horizontal radiation Leaky-wave antenna Microstrip line Seamless beam scanning ASYMMETRY

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