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Journal of Wuh.n University of Tech.ology(Materials Science) 2024年第4期39卷 895-903页

作者：韩宗盈 dong h.i DING Guoyang zhang Jiale SONG Xiufang College of Energy Storage Tech.ology Shandong University of Science and TechnologyQingdao 266590China College of Ch.mical and Biological Engineering Shandong University of Science and TechnologyQingdao 266590China

Th. lignite-derived carbon from self-protection pyrolysis was employed to balance th. fracturing and cold-welding of magnesium during ball *** size analysis indicates th.t th. introduction of lignite-derived carbon can effectively reduce th. particle size of Mg wh.le th. introduction of graph.te does no ***,th. effect of lignite-derived carbon on crystallite size reduction of Mg is also better th.n graph.te.A moderate cold-welding ph.nomenon was observed after ball-milling Mg with.th. lignite-derived carbon,suggesting less Mg is wasted on th. milling vials and *** dynamic simulations reveal th.t th. balanced fracturing and cold-welding of magnesium during ball milling is mainly attributed to th. special structure of th. lignite-derived carbon:graph.tized sh.rt-range ordered stacking function as dry lubricant and irregular sh.pe/sh.rp edge function as milling *** preliminary findings in current study are expected to offer implications for designing efficient Mg-based h.drogen storage materials.

关键词： magnesium lignite-derived carbon cold-welding ball milling molecular dynamic

Tendencies of alloyed engineering in BiOX-based ph.tocatalysts:a state-of-th.-art review

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Rare Metals 2024年第4期43卷 1488-1512页

作者： Yan-dong Sun Ch.o Zeng Xue zhang Zi-Qi zhang Bo Yang Sh.ng-Qi Guo Tianjin Key Laboratory of Clean Energy and Pollutant Control School of Energy and Environmental EngineeringHebei University of TechnologyTianjin300401China State-Province Joint Engineering Laboratory of Zeolite Membrane Materials Institute of Advanced MaterialsCollege of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang330022China Anh.i Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation School of Physics and Electronic InformationAnhui Province Industrial Generic Technology Research Center for Alumics MaterialsHuaibei Normal UniversityHuaibei235000China

Energy-saving and environmentally friendly ph.tocatalysis h.s emerged as a popular research.area in response to issues with.energy scarcity and environmental *** to th. unique layer-like structure,BiOX(Cl,Br,I)is frequently used in ***,inh.rent flaws in BiOX,such.as an inappropriate band gap and low carrier separation efficiency,restrict its capacity for *** to th. tunable grouping layer,alloying engineering is employed to optimize th. intrinsic properties of BiOX and alloyed BiOX becomes a promising ph.tocatalytic *** review describes th. structure of BiOX,wh.re tunable h.logen layers provide favorable conditions for th. implementation of alloying engineering to improve intrinsic *** article compares th. effects and mech.nisms of alloying engineering on th. optimization of th. energy band structure and carrier beh.vior of BiOX,and lists various modification meth.ds used to improve th. optimization of th. intrinsic properties by alloying engineering,including defect engineering,morph.logy control as well as th. synergy between alloying and oth.r modification meth.ds(bismuth.rich.strategies,cation doping,construction of h.terojunctions and plasma resonance effects).Subsequently,applications of alloyed BiOX in energy and environmental fields are summarized,including contaminant degradation,antibacterial,CO_(2)reduction,nitrogen fixation and organic ***,we summarize th. current ch.llenges and future directions of alloyed *** is expected th.t th.s work will provide guidance and assistance for an in-depth.study and understanding of th. mech.nisms of alloying engineering to optimize intrinsic properties and design alloyed BiOX with.h.gh.r ph.tocatalytic activity.

关键词： Bismuth.oxyh.lide Ph.tocatalytic Alloyed engineering Microstructural regulation Application

Navigation for autonomous veh.cles via fast-stable and smooth.reinforcement learning

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Science Ch.na(Tech.ological Sciences) 2024年第2期67卷 423-434页

作者： zhang RuiXian YANG JiaNan LIANG Ye LU Sh.ngAo dong YiFei YANG BaoQing zhang LiXian Sch.ol of Astronautics Harbin Institute of TechnologyHarbin 150001China

Th.s paper investigates th. navigation problem of autonomous veh.cles based on reinforcement learning(RL)with.both.stability and smooth.ess *** introducing a data-based Lyapunov function,th. stability criterion in mean cost is obtained,wh.re th. Lyapunov function h.s a property of fast ***,an off-policy RL algorith. is proposed to train safe policies,in wh.ch.a more strict constraint is exerted in th. framework of model-free RL to ensure th. fast convergence of policy generation,in contrast with.th. existing RL merely with.stability *** addition,by simultaneously introducing constraints on action increments and action distribution variations,th. difference between th. adjacent actions is effectively alleviated to ensure th. smooth.ess of th. obtained policy,instead of only seeking th. similarity of th. distributions of adjacent actions as commonly done in th. past literature.A navigation task of a ground differentially driven mobile veh.cle in simulations is adopted to demonstrate th. superiority of th. proposed algorith. on th. fast stability and smooth.ess.

关键词： autonomous veh.cles navigation reinforcement learning smooth.ess stability

Prediction of dissolved gas content in transformer oil based on multi-information fusion

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h.gh.Voltage 2024年第3期9卷 685-699页

作者： Tongliang Yang Yun Fang Ch.ngming zhang Ch.o Tang dong h. College of Engineering and Tech.ology Southwest UniversityChongqingChina International R&D Center for New Tech.ologies of Smart Grid and Equipment Southwest UniversityChongqingChina

In order to accurately predict th. content and variation trend of dissolved gas in trans-former oil and guide th. condition maintenance of power transformers,a combined prediction model based on multi-information fusion is proposed and its effectiveness is *** of all,based on th. possibility of path.logical and missing h.storical sample data,a detection and filling meth.d based on variable weigh. combination samples is ***,th. auth.rs propose two *** at th. non-linear and non-stationary ch.racteristics of gas content,a univariate decomposition prediction mode h.A-VMD-TCN wh.ch.based on th. h.ney Badger algorith.,variational mode decomposition and time convolutional network(TCN)is *** th. multi-variate Informer prediction model is establish.d for gas content affected by multiple ***,th. cross-entropy th.ory is used to determine th. weigh. coefficients of th. two models,and th. multi-information fusion combined prediction model is ***,on th. basis of th. above,a meth.d to determine th. time step and th. position information of th. transition point adaptively in th. process of prediction is proposed to furth.r improve th. prediction *** results sh.w th.t,th.ough.a series of simulation experiments of model comparison and transformer anomaly prediction,th. accuracy and effectiveness of th. combined prediction model are verified.

关键词： content prediction dissolved

Investigating th. Absorption and Desorption Beh.vior of Meth.lene Ch.oride in th. Poly(aryl eth.r ketone) Film with.Different Crystallinities

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Ch.nese Journal of Polymer Science 2024年第2期42卷 239-246,I0009页

作者： h.ng-Ru Yang Jin-dong zhang dong-Ting Gao Gang Liu Ch.n-h.i Ch.n Jia-Nan Yao Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai201620China

Poly(aryl eth.r keton e)(PAEK) films with.different crystallinities were obtained by controlling th. cooling rate,wh.ch.were subjected to th. absorption and desorption of meth.lene ch.oride(Ch.(2)Cl_(2)).We employed attenuated total reflection Fourier transform infrared(ATR-FTIR)spectroscopy analyses to investigate th. diffusion beh.vior of Ch.(2)Cl_(2) in PAEK films with.different *** to th. Fickian diffusion model,th. calculated diffu sion coefficients of Ch.(2)Cl_(2) in PAEK films were observed to decrease with.increasing *** effect of Ch.(2)Cl_(2)absorption and desorption on th. mech.nical properties of PAEK films with.different crystallinity was furth.r analyzed using tensile *** tensile tests exh.bited th.t Ch.(2)Cl_(2) h.s two concurrent effects:plasticization and solvent-induced *** scanning calorimetry(DSC) and wide-angle X-ray diffraction(WXRD) tech.iques furth.r confirmed solvent-induced crystallization *** results would be beneficial to understand th. solvent resistance of PAEK materials and consequently provide th. practical application conditions of PAEK with.a th.oretical basis.

关键词： Poly(aryl eth.r ketone) Diffusion beh.vior Infrared spectra Solvent-induced crystallization Mech.nical properties

Th.oretical prediction of ground settlements due to sh.eld tunneling in multi-layered soils considering process parameters

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Underground Space 2024年第3期16卷 29-43页

作者： Liqiang Cao Xiangsh.ng Ch.n Dech.n Lu Dingli zhang dong Su Institute of Geotech.ical and Underground Engineering Beijing University of TechnologyBeijing 100124China Underground Polis Academy Shenzhen UniversityShenzhen 518060China Key Laboratory of Urban Underground Engineering of Ministry of Education Beijing Jiaotong UniversityBeijing 100044China Key Laboratory for Resilient Infrastructures of Coastal Cities(MOE) Shenzhen UniversityShenzhen 518060China

Th.s paper conducts a th.oretical analysis of ground settlements due to sh.eld tunneling in multi-layered soils wh.ch.are usually encountered in urban *** proposed th.oretical solution wh.ch.is based on th. general form of th. Mindlin’s solution and Loganath.n-Poulos formula can compreh.nsively consider th. in-process tunneling parameters including:unbalanced face pressure,sh.eld-soil friction,unbalanced tail grouting pressure,unbalanced secondary grouting pressure,overloading during tunneling and th. ground volume *** meth.d is verified by comparing with.th. field data from th. Qingh.ayuan Tunnel Project in terms of th. ground surface settlements along th. longitudinal and transverse *** to th. local settlement or h.ave caused by th. certain tunneling parameters,th. ground surface settlements calculated using current solution along th. longitudinal direction presents an irregular S-sh.ped curve instead of th. traditional S-sh.ped *** also find th.t th. effect of th. unbalanced secondary grouting pressure and th. overloading during tunneling cannot be ignored.

关键词： Tunneling Sh.eld Ground settlements Th.oretical analysis Urban areas Multi-layered soils Qingh.ayuan Tunnel

Exceptional points enh.nce sensing in silicon micromech.nical resonators

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Microsystems & Nanoengineering 2024年第1期10卷 17-25页

作者： Man-Na zhang Lei dong Li-Feng Wang Qing-An h.ang Key Laboratory of MEMS of th. Ministry of Education Southeast UniversityNanjing 210096China

Exceptional points(EPs)h.ve recently emerged as a new meth.d for engineering th. response of open ph.sical systems,th.t is,systems th.t interact with.th. *** systems at th. EPs exh.bit a strong response to a small ***,we sh.w a meth.d by wh.ch.th. sensitivity of silicon resonant sensors can be enh.nced wh.n operated at *** our experiments,we use a pair of mech.nically coupled silicon micromech.nical resonators constituting a parity-time(PT)-symmetric *** perturbations introduced on th. mech.nically coupled spring cause th. frequency to split from th. EPs into th. PT-symmetric regime with.ut broadening th. two spectrum linewidth.,and th.s frequency splitting scales with.th. square root of th. perturbation *** overall signal-tonoise ratio is still greatly enh.nced,alth.ugh.th. measured noise spectral density of th. EP sensing sch.me h.s a sligh. increase comparable to th. traditional *** results pave th. way for resonant sensors with.ultrah.gh.sensitivity.

关键词： resonant symmetric points

Imitation Learning Based Real-time Decision-making of Microgrid Economic Dispatch.Under Multiple Uncertainties

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Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1183-1193页

作者： Wei dong Fan zhang Meng Li Xiaolun Fang Qiang Yang Sch.ol of Automation Hangzhou Dianzi UniversityHangzhou 310018China College of Electrical Engineering Zhejiang UniversityHangzhou 310027China

Th. intermittency of renewable energy generation,variability of load demand,and stoch.sticity of market price bring about direct ch.llenges to optimal energy management of *** cope with.th.se different forms of operation un-certainties,an imitation learning based real-time decision-mak-ing solution for microgrid economic dispatch.is *** th.s solution,th. optimal dispatch.trajectories obtained by solv-ing th. optimal problem using h.storical deterministic operation patterns are demonstrated as th. expert samples for imitation *** improve th. generalization performance of imita-tion learning and th. expressive ability of uncertain variables,a h.brid model combining th. unsupervised and supervised learn-ing is *** denoising autoencoder based unsupervised learning model is adopted to enh.nce th. feature extraction of operation ***,th. long sh.rt-term memory network based supervised learning model is used to efficiently ch.racterize th. mapping between th. input space composed of th. extracted operation patterns and system state variables and th. output space composed of th. optimal dispatch.*** numerical simulation results demonstrate th.t under vari-ous operation uncertainties,th. operation cost ach.eved by th. proposed solution is close to th. minimum th.oretical *** with.th. traditional model predictive control meth.d and basic clone imitation learning meth.d,th. operation cost of th. proposed solution is reduced by 6.3%and 2.8%,respective-ly,overa test period of th.ee month..

关键词： Energy management imitation learning datadriven decision economic dispatch

Green Synth.sis of Iron(Ⅱ,Ⅲ)-polyph.nol Nanoparticles and Th.ir Adsorption of Malach.te Green

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Journal of Wuh.n University of Tech.ology(Materials Science) 2024年第4期39卷 1025-1030页

作者：胡玉 Zh.U Fan zhang Nan PAN Xiaobin LI Sh.ying zhang dong LI Li 张玲帆 Department of Ch.mistry and Environmental Engineering Hanjiang Normal UniversityShiyan 442000China Sh.yan h.drological and Water Resources Survey Bureau of h.bei Province Shiyan 442000China Sch.ol of Ch.mistry and Molecular Engineering East China University of Science and TechnologyShanghai 200237China

Th.ee kinds of iron nanoparticles(FeNPs)were prepared via green route based on pomegranate(PG),green tea(GT),and mulberry(ML)extracts under ambient *** obtained materials were ch.racterized by scanning electron microscopy(SEM),transmission electronic microscopy(TEM),X-ray energy-dispersive spectrometer(EDS),X-ray diffraction(XRD),fourier transform infrared spectroscopy(FTIR),and X-ray ph.toelectron spectroscopy(XPS)*** experimental results sh.w th.t FeNPs were in th. form of amorph.us iron(Ⅱ,Ⅲ)-polyph.nol complex with.different dispersity and ***-Fe h.s th. smallest size range of 25-35 nm,PG-Fe h.s a moderate size-distribution of 30-40 nm,wh.le ML-Fe formed a tuberous net-type with.a sh.eting ***-Fe displays th. h.gh.st removal efficiency of 90.2%in 20 min towards cationic dye of malach.te green(16.6%by ML-Fe and 69.3%by GT-Fe),wh.ch.is attributed to its h.gh.st polyph.nol content,lowest zeta potential,as well as th. most Fe^(2+)on th. surface of *** removal mech.nism was mainly induced by electrostatic adsorption based on ph.and zeta potential tests.

关键词： iron nanoparticles pomegranate green tea mulberry adsorption

Mech.nical properties and acoustic emission ch.racteristics of soft rock with.different water contents under dynamic disturbance

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International Journal of Coal Science & Tech.ology 2024年第3期11卷 135-148页

作者： Yujing Jiang Lugen Ch.n dong Wang h.ngjie Luan Guangch.o zhang Ling dong Bin Liang State Key Laboratory of Mining Disaster Prevention and Control Co-Founded By Sh.ndong Province and th. Ministry of Science and Tech.ology Shandong University of Science and TechnologyQingdao266590China State Key Laboratory for Geomech.nics and Deep Underground Engineering China University of Mining and TechnologyBeijing100083China Inner Mongolia Sh.ngh.imiao Mining Co. Ltd.Ordos016299China

Uniaxial compression tests and cyclic loading acoustic emission tests were conducted on 20%,40%,60%,80%,dry and saturated muddy sandstone by using a creep impact loading system to investigate th. mech.nical properties and acoustic emission ch.racteristics of soft rocks with.different water contents under dynamic *** mech.nical properties and acoustic emission ch.racteristics of muddy sandstones at different water contents were *** of experimental studies sh.w th.t water is a key factor in th. mech.nical properties of rocks,softening th.m,increasing th.ir porosity,reducing th.ir brittleness and increasing th.ir *** uniaxial compression,th. macroscopic damage ch.racteristics of th. muddy sandstone ch.nge from mono-bevel sh.ar damage and‘X’type conjugate bevel sh.ar damage to a roadway bottom-drum type damage as th. water content *** perturbation h.s a strength.ning effect on th. mech.nical properties of samples with.60%and less water content,and a weakening effect on samples with.80%and more water content,but th. weakening effect is not *** damage ch.racteristics of dry samples remain unch.nged,water samples from sh.ar damage and tensile–sh.ar composite damage gradually transformed into cleavage damage,until saturation transformation monoclinic sh.ar *** evolution of acoustic emission energy and event number is mainly divided into four stages:loading stage(Ⅰ),dynamic loading stage(Ⅱ),yield failure stage(Ⅲ),and post-peak stage(Ⅳ),th. acoustic emission ch.racteristics of th. stages were different for different water *** ch.racteristic value of acoustic emission key point frequency gradually decreases,and th. damage degree of th. specimen increases,corresponding to low water content—h.gh.main frequency—low damage and h.gh.water content—low main frequency—h.gh.damage.

关键词： Dynamic disturbance Soft rock Cyclic loading Acoustic emission Water content