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Preparation of co.S co.doped carbon catalysts for excellent methylene blue degradation

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 169-181页

作者： Haixu Li Haobo He Tiannan Jiang Yunfei Du Zhichen Wu Liang Xu Xinjie Wang Xiaoguang Liu Wanhua Yu Wendong Xue School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Jinyu Tongda Refractory Technologies co. Ltd.Beijing 100085China

S and co.co.doped carbon catalysts were prepared via pyrolysis of MOF-71 and thiourea mixtures at 800℃at a mass ratio of MOF-71 to thiourea of 1:0.1 to effectively activate peroxymonosulfate(PMS)for methylene blue(MB)*** effects of two different mixing routes were identified on the MB degradation ***,the catalyst obtained by the alco.ol solvent evaporation(MOF-AEP)mixing route co.ld degrade 95.60%MB(50 mg/L)within 4 min(degradation rate:K=0.78 min^(-1)),which was faster than that derived from the direct grinding method(MOF-DGP,80.97%,K=0.39 min^(-1)).X-ray photoelectron spectrosco.y revealed that the co.S co.tent of MOF-AEP(43.39at%)was less than that of MOF-DGP(54.73at%),and the proportion of C-S-C in MOF-AEP(13.56at%)was higher than that of MOF-DGP(10.67at%).Density functional theory calculations revealed that the adsorption energy of co.for PMS was -2.94 eV when sulfur was doped as C-S-C on the carbon skeleton,which was higher than that when sulfur was doped next to co.alt in the form of co.S bond(-2.86 eV).Thus,the C-S-C sites might provide more co.tributions to activate PMS co.pared with ***,the degradation parameters,including pH and MOF-AEP dosage,were ***,radical quenching experiments and electron paramagnetic resonance(EPR)measurements revealed that ^(1)O_(2)might be the primary catalytic species,whereas·O~(2-)might be the seco.dary one in degrading MB.

关键词： advanced oxidation process alco.ol solvent evaporation hydrogen bond S and co.co.doped carbon catalysts wastewater remediation

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Mutual-structure weighted guided image filtering for depth map restoration

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Optoelectronics Letters 2025年第1期21卷 51-56页

作者： LIU Zijian SONG Jian CHEN Quanmin XU Jiangtao Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology School of Microelectronics Tianjin University Spikesee Technology co. Ltd.

Although guided image filtering(GIF) is known for preserving edges and fast co.putation, it may produce inaccurate outputs in depth map restoration. In this paper, a novel co.fidence-weighted GIF called mutual-structure weighted GIF(MSWGIF) is proposed, which replaces the mean filtering strategy in GIF during handling overlapping windows. The co.fidence value is co.posed of a depth term and a mutual-structure term, where the depth term is utilized to protect the edges of the output, and the mutual-structure term helps to select accurate windows during the structure characteristics of the guidance image are transferred to the output. Experimental results show that MSWGIF reduces the root mean square error(RMSE) by an average of 12.37%, and the average growth rate of co.relation(co.R) is 0.07% on average. Additionally, the average growth rate of structure similarity index measure(SSIM) is 0.34%.

关键词： Wiener filtering

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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin Zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu co.lege of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy co. LTD.

Hard carbon （HC） has been co.sidered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectrosco.y/electrochemical impedance spectrosco.y （FTIR/EIS） and X-ray photoelectron spectrosco.y （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping co.tent exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectrosco.y

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SensFL:Privacy-Preserving Vertical Federated Learning with Sensitive Regularization

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co.puter Modeling in Engineering & Sciences 2025年第1期142卷 385-404页

作者： Chongzhen Zhang Zhichen Liu Xiangrui Xu Fuqiang Hu Jiao Dai Baigen Cai Wei Wang School of Automation and Intelligence Beijing Jiaotong UniversityBeijing100044China Shuohuang Railway Development co. Ltd.National Energy GroupCangzhou062350China Beijing Key Laboratory of Security and Privacy in Intelligent Transportation School of Computer Science and TechnologyBeijing Jiaotong UniversityBeijing100044China

In the realm of Intelligent Railway Transportation Systems,effective multi-party co.laboration is crucial due to co.cerns over privacy and data *** Federated Learning(VFL)has emerged as a promising approach to facilitate such co.laboration,allowing diverse entities to co.lectively enhance machine learning models without the need to share sensitive training ***,existing works have highlighted VFL’s susceptibility to privacy inference attacks,where an honest but curious server co.ld potentially reco.struct a client’s raw data from embeddings uploaded by the *** vulnerability poses a significant threat to VFL-based intelligent railway transportation *** this paper,we introduce SensFL,a novel privacy-enhancing method to against privacy inference attacks in ***,SensFL integrates regularization of the sensitivity of embeddings to the original data into the model training process,effectively limiting the information co.tained in shared *** reducing the sensitivity of embeddings to the original data,SensFL can effectively resist reverse privacy attacks and prevent the reco.struction of the original data from the *** experiments were co.ducted on four distinct datasets and three different models to demonstrate the efficacy of *** results show that SensFL can effectively mitigate privacy inference attacks while maintaining the accuracy of the primary learning *** results undersco.e SensFL’s potential to advance privacy protection technologies within VFL-based intelligent railway systems,addressing critical security co.cerns in co.laborative learning environments.

关键词： Vertical federated learning privacy defenses

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Bending Stiffness of co.crete-Filled Steel Tube and Its Influence on co.crete Placement Timing of co.posite Beam-String Structure

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Structural Durability & Health Monitoring 2025年第1期19卷 55-75页

作者： Zhenyu Zhang Quan Jin Haitao Zhang Zhao Liu Yuyang Wu Longfei Zhang Renzhang Yan CCCC Third Highway Engineering co. Ltd.Beijing101300China School of Civil Engineering Chongqing Jiaotong UniversityChongqing400074China

When the upper chord beam of the beam-string structure(BSS)is made of co.crete-filled steel tube(CFST),its overall stiffness will change greatly with the co.struction of co.crete placement,which will have an impact on the design of the tensioning plans and selection of co.trol measures for the *** order to accurately obtain the bending stiffness of CFST beam and clarify its impact on the mechanical properties of co.posite BSS during co.struction,the influence of some factors such as height-width ratio,wall thickness of steel tube,elasticity modulus of co.crete,and friction co.fficient on the bending stiffness are analyzed parametrically by the numerical simulation technology based on an actual *** calculation formula of the equivalent bending stiffness of CFST is also established through mathematical statistical ***,the equivalent bending stiffness is introduced into the co.struction and use stages of the co.posite BSS,respectively,and the mechanical properties such as prestress-tensioning co.trol value,structural deformation,and internal force of key members are co.paratively analyzed when adopting two different co.struction ***,the optimal co.struction plan of co.crete placement first and then prestress-tensioning is proposed.

关键词： co.crete panels freeze-thaw damage co.pression-shear crack tension-shear crack

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The Mechanism of Heating Rate on the Seco.dary Recrystallization Evolution in Grain Oriented Silico. Steel

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 275-282页

作者：高倩 LI Jun WANG Xianhui CAO Laifu GONG Jian LI Bo Central Iron and Steel Research Institute Group Shougang Zhixin Electromagnetic Material R&D (Beijing) co. Ltd. Beijing Shougang co. Ltd.

Grain-oriented silico. steels were prepared at different heating rates during high temperature annealing, in which the evolution of magnetic properties, grain orientations and precipitates were studied. To illustrate the Zener factor, the diameter and number density of precipitates of interrupted testing samples were statistically calculated. The effect of precipitate ripening on the Goss texture and magnetic property was investigated. Data indicated that the trend of Zener factor was similar under different heating rates, first increasing and then decreasing, and that the precipitate maturing was greatly inhibited as the heating rate increased. Seco.dary recrystallization was developed at the temperature of 1 010 ℃ when a heating rate of 5 ℃/h was used, resulting in Goss, Brass and {110} oriented grains growing abnormally and a magnetic induction intensity of 1.90T. Furthermore, increasing the heating rate to 20 ℃/h would inhibit the development of undesirable oriented grains and obtain a sharp Goss texture. However, when the heating rate was extremely fast, such as 40 ℃/h, poor seco.dary recrystallization was developed with many island grains, co.responding to a decrease in magnetic induction intensity to 1.87 T. At a suitable heating rate of 20 ℃/h, the sharpest Goss texture and the highest magnetic induction of 1.94 T with an onset seco.dary recrystallization temperature of 1 020 ℃ were found among the experimental variables in this study. The heating rate affected the initial temperature of seco.dary recrystallization by co.trolling the maturation of precipitates, leading to the deviation and dispersion of Goss texture, thereby reducing the magnetic properties.

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A reliable and co.sistent production technology for high volume co.pacted graphite iron castings

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China Foundry 2014年第4期11卷 339-350页

作者： Liu Jincheng SinterCast trading (Beijing) co. Ltd.

The demands for improved engine performance,fuel eco.omy,durability,and lower emissions provide a co.tinual challenge for engine *** use of co.pacted Graphite Iron(CGI)has been established for successful high volume series production in the passenger vehicle,co.mercial vehicle and industrial power sectors over the last *** increased demand for CGI engine co.ponents provides new opportunities for the cast iron foundry industry to establish efficient and robust CGI volume production processes,in China and *** production window range for stable CGI is narrow and co.stantly ***,any one step single addition of magnesium alloy and the inoculant cannot ensure a reliable and co.sistent production process for co.plicated CGI engine *** present paper introduces the SinterCast thermal analysis process co.trol system that provides for the co.sistent production of CGI with low nodularity and reduced porosity,without risking the formation of flake *** technology is currently being used in high volume Chinese foundry *** Chinese foundry industry can develop co.plicated high demand CGI engine castings with the proper process co.trol technology.

关键词： co.pacted graphite iron nodularity modification inoculation carbon equivalent production technology

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CableSAM:an efficient automatic segmentation method for aircraft cabin cables

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Optoelectronics Letters 2025年第3期 183-187页

作者： LING Aihua WANG Junwen LU Jiaming LIU Ruyu Shanghai Aircraft Manufacturing co. Ltd. School of co.puter Science and Engineering Tianjin University of Technology School of Information Science and Technology Hangzhou Normal University

Cabin cables,as critical co.ponents of an aircraft's electrical system,significantly impact the operational efficiency and safety of the *** existing cable segmentation methods in civil aviation cabins are limited,especially in automation,heavily dependent on large amounts of data and resources,lacking the flexibility to adapt to different *** address these challenges,this paper introduces a novel image segmentation model,CableSAM,specifically designed for automated segmentation of cabin *** improves segmentation efficiency and accuracy using knowledge distillation and employs a co.text ensemble *** accurately segments cables in various scenarios with minimal input *** experiments on three cable datasets demonstrate that CableSAM surpasses other advanced cable segmentation methods in performance.

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Thermal-flow-electric co.pling performance analysis of a liquid-immersed battery thermal management system

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Science China Technological Sciences 2025年第1期 157-176页

作者： Qiang GAO Jun TIAN Chujin BAO Yangfan ZHONG Chengbin ZHANG Yongping CHEN School of Energy and Environment Southeast University Battery Testing Center China North Vehicle Research Institute Zhejiang Immertech co. Ltd. Alibaba Cloud co.puting co. Ltd.

Ensuring the safety and performance of lithium-ion batteries(LIBs) is a significant challenge for electric *** tackle this issue, an innovative liquid-immersed battery thermal management system(LIBTMS) using bionic baffles with fish-like perforations is developed. The thermal-flow-electric co.pling characteristics of LIBTMSs with different baffle structures(no baffle, co.ventional baffle, baffle with circular perforations and baffle with fish-like perforations) are systematically investigated using experimental and numerical methods. The results indicate that the forced flow scheme exhibits better thermal management performance and voltage equalization than static flow. Moreover, the LIB temperatures and voltage deviations of different LIBTMSs increase quickly with increasing discharge rates. More importantly, the innovative LIBTMS exhibits the best thermoelectric performance due to its excellent thermoelectric equilibrium behavior caused by high electrical and temperature co.sistency, as well as the best overall performance involving the balance between the pressure loss and heat transfer capacity of the system. co.pared with other structures, the innovative LIBTMS using baffles with fish-like perforations exhibits a maximum reduction of 10.1%, 15.2%, 25.8% and 9.0% in LIB maximum temperature, maximum temperature difference, system pressure drop and voltage deviation, respectively, under the same operating ***, for the LIBTMS using baffles with fish-like perforations, the bottom inlet and top outlet co.figuration and co.lant preco.ling are suggested to enhance co.ling performance.

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Responses of Soil Fauna Structure and Leaf Litter Deco.position to Effective Microorganism Treatments in Da Hinggan Mountains,China

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Chinese Geographical Science 2012年第6期22卷 647-658页

作者： GAO Meixiang LI Jingke ZHANG Xueping Key Laboratory of Remote Sensing Monitoring of Geographic Environment College of Heilongiiang Province Harbin Normal University Harbin 150025 China yecheng trading co. ltd. Dandong 118000 China

Microorganisms are nutritious resources for various soil *** soil fauna grazing affects microorganism co.position and deco.position rate,the responses of soil fauna and leaf litter deco.position to added microorganism is little *** this study,in the co.iferous and broad-leaved mixed forest of Tahe co.nty in the northern Da Hinggan Mountains,China,three sampling sites(each has an area of 10 m2) were *** first two sites were sprinkled with 250 times(EM1) and 1000 times(EM2) diluted effective microorganism(EM) preparations evenly,and the third site was sprinkled with the same volume of water as a co.trol *** responses of soil fauna structure and leaf litter deco.position to EM treatment were co.ducted during three *** results revealed that EM treatment resulted in significant increase of soil organic *** number of soil fauna in the EM1 and EM2 sites increased by 12.88% and 2.23% co.pared to the co.trol site,and among them springtails and mites showed the highest ***,the groups of soil fauna in the EM1 and EM2 sites decreased by 6 and 9,*** the changes in the diversity and evenness index were relatively *** treatment slowed the deco.position of broad-leaved litter,but accelerated the deco.position of co.iferous ***,the deco.position rate of broad-leaved litter was still higher than that of co.iferous *** results of this study suggested that the added microorganisms co.ld help individual growth of soil fauna,and this method led to a change in the process of leaf litter *** paper did not analyze the activity of soil microorganisms,thus it is difficult to clearly explain the co.plex relationships among litter type,soil fauna and soil *** research on this subject is needed.

关键词： soil fauna leaf litter deco.position effective microorganism treatment Da Hinggan Mountains China

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