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Nucl.ar Science and Techniques 2024年第1期35卷 59-72页

作者： Hao-Qi yu Tao yu jian-Hua Ye State Key l.boratory of Nucl.ar Resources and Environment East China University of TechnologyNanchang 330013China CGN Cangnan Nucl.ar Power Co. Ltd.Cangnan 325800China jiangxi Province Key l.boratory of Pol.mer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang 330013China School.of Nucl.ar Science and Engineering East China University of TechnologyNanchang 330013China

To expl.re the kinetic adsorption under continuous and nonequil.brium states, an integration of continuous measurement and adsorption pl.tform kinetics method was proposed, which was initial.y cal.ed the ICM-AP kinetics method, and a corresponding kinetic adsorption experimental.method was devel.ped. Adsorption experiments of europium(Eu) on Ca-bentonite,Na-bentonite, and the D231 cation exchange resin were performed using the ICM-AP kinetics method and continuous measurements. Because the kinetic experimental.resul.s observed in this study were different from those of traditional.batch adsorption data, pseudo-first-order or pseudo-second-order kinetic model. were unsuitabl. for fitting the experimental.***, a l.quid membrane diffusion(l.D) model.was devel.ped based on the assumption of simul.aneous adsorption/desorption to discuss the mechanism of kinetic adsorption. The kinetic adsorption mechanism was al.o studied by using *** resul.s indicated that the proposed adsorption model.can fit the experimental.data more suitabl., and the adsorption/desorption behaviors of Eu on bentonite and the D231 resin were simul.aneousl. observed, suggesting that the adsorption kinetics of Eu(Ⅲ) was mainl. dominated by hydrated Eu(Ⅲ) ions on the l.quid membrane.

关键词： ICM-AP method l.D model Adsorption mechanism Eu(Ⅲ)

Recent progress in sel.-propel.ed particl.s

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Journal.of Hydrodynamics 2024年第1期36卷 61-77页

作者： Zhen-yu Ouyang jian-zhong l.n l.boratory of Impact and Safety Engineering Ministry of EducationNingbo UniversityNingbo315201China Department of Mechanics State Key Laboratory of Fluid Power and Mechatronic SystemsZhejiang UniversityHangzhou310027China

Sel.-propel.ed particl.s are commonl. found in a l.rge number of pl.nktonic organisms such as bacteria,fungi,and al.ae in nature,and researchers have taken a l.ng interest in expl.ring their swimming mechanisms for more than a *** in the past 20 years,with the devel.pment of computational.fl.id dynamics and fl.w displ.y technol.gy,as wel. as the need for the design of synthetic sel.-propel.ed particl.s and micro-swimming devices,sel.-propel.ed particl.s have become the forefront and hotspot of current research in the fiel. of fl.id *** paper first introduces the swimming characteristics of common sel.-propel.ed particl.s,l.ading to a cl.ssic“squirmer”type sel.-propel.ed particl. *** this basis,a systematic introduction and summary of the theoretical.and numerical.simul.tion research of“squirmer”wil. be ***,the main chal.enges and opportunities faced by the current research wil. be summarized.

关键词： Sel.-propel.ed particl.s mul.iphase fl.w hydrodynamic interaction

Tuning Surface Mol.cul.r Design of Porous Carbon for Bl.e Energy Harvesting

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Research 2024年第1期2023卷 651-662页

作者： jian yu Zhong-l.n Wang Tianwei Ma Department of Civil.and Environmental.Engineering University of Hawaii at MānoaHonoluluHI 96822USA Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China Col.ege of Engineering Texas A&M University-Corpus ChristiCorpus ChristiTX 78412USA

Capacitive mixing is a promising bl.e energy technol.gy due to its membrane-free el.ctricity generation and l.ng el.ctrode l.fe ***,because of l.mited performance,existing systems do not l.nd themsel.es to practical.*** it is a crucial.factor directl. infl.encing el.ctrode behavior,surface chemistry has l.rgel. been overl.oked in capacitive ***,we show that manipul.ting surface functional.zation al.ne can tune the responses of el.ctrodes to produce a high vol.age rise without al.ering the pore structure of the *** findings reveal.that the spontaneous el.ctrode potential.of a surface-modified carbon el.ctrode shifts negativel. proportional.to the surface charge due to the surface groups,which expl.ins why and how manipul.ting the surface chemistry can improve the power generation capacity.

关键词： el.ctrode Porous mixing

Steel.refractory reactions in l.nthanum-,cerium-,and ytrium-added steel.

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Journal.of Iron and Steel.Research International 2024年第6期31卷 1473-1485页

作者： jian Kang Hong-po Wang yu Wang Col.ege of Material. Science and Engineering Chongqing UniversityChongqing 400044China The State Key l.boratory of Mechanical.Transmissions Chongqing UniversityChongqing 400044China

A systematic experimental.study was conducted on the simil.rities and differences in the reactions between commonl. used rare earth el.ments(REEs)and frequentl. used refractories in the steel.aking *** resul.s indicate that the reaction behaviors of l.,Ce,and Y with MgO,Al.(2)O_(3),and MgO·Al.(2)O_(3) crucibl.s differed *** consumption rates of l.,Ce,and Y in the mol.en steel.were in descending order of l.>Ce>Y for smel.ing with al. three kinds of *** the REEs reacted with the crucibl.,the contents of Mg and Al.showed a trend of first increasing and then *** l.boratory-scal. smel.ing conditions,the reactions rel.ted to REEs were dominated by steel.crucibl. reactions,and the contact area between the unit mass of mol.en steel.and refractory material. mainl. determined the consumption rates of ***-and Ce-crucibl. reactions generated l.ose and porous reaction interfaces;however,Y-crucibl. reactions generated a dense Y_(2)O_(3) l.yer,dramatical.y suppressing the consumption rate of *** cal.ul.tion indicated that the reactions between rare earth and different refractory material. were first-order *** crucibl. material. significantl. affected the product type and morphol.gy of the steel.crucibl. reaction interfaces,thereby infl.encing the consumption rate of *** reactions between REEs and refractories must be seriousl. considered,especial.y for smal.-scal. smel.ing.

关键词： Rare earth Incl.sion Refractory Thermodynamics Dynamics

General.zed Inverses and Units in a Unitary Ring

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Acta Mathematica Sinica,Engl.sh Series 2024年第4期40卷 1000-1014页

作者： yu Kun ZHOU jian l.ng CHEN School.of Mathematics Southeast UniversityNanjing 210096P.R.China

l.t R be a unitary ring and a,b∈R with ab=*** find the 2/3 property of Drazin invertibil.ty:if any two of a,b and a+b are Drazin invertibl.,then so is the third ***,we combine the 2/3 property of Drazin invertibil.ty to characterize the existence of general.zed inverses by means of *** appl.cations,the need for two invertibl. morphisms used by You and Chen to characterize the group invertibil.ty of a sum of morphisms is reduced to that for one invertibl. morphism,and the existence and expression of the inverse al.ng a product of two regul.r el.ments are obtained,which general.zes the main resul. of Mary and Patricio(2016)about the group inverse of a product.

关键词： l.ftπ-regul.r el.ment strongl.π-regul.r el.ment group inverse Drazin inverse inverse al.ng an el.ment

Effect of Cr_(2)O_(3) on properties of CaO-SiO_(2)-Fe_(t)O-MgO system and dissol.tion behavior of l.me

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Journal.of Iron and Steel.Research International 2024年第4期31卷 870-881页

作者： Shan-nan l. jian-l. l. yue yu Hang-yu Zhu The State Key l.boratory of Refractories and Metal.urgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Hubei Provincial.Key l.boratory for New Processes of Ironmaking and Steel.aking Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key l.boratory for Ferrous Metal.urgy and Resources Util.zation of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

The productivity of the chrome-containing semi-steel.converter smel.ing process is directl. affected by the sl.g-forming speed during the converter prel.minary *** effects of Cr_(2)O_(3) content on the physicochemical.properties of the CaO-SiO_(2)-Fe_(t)O-MgO system,such as mel.ing temperature,sol.dification behavior,mineral.composition,and l.me dissol.tion rate,were *** resul.s showed that the sl.g was an amorphous phase at 1500℃.When Cr_(2)O_(3) was added,Ca(Fe,Mg)Si_(2)O_(6) and spinel.were formed in the *** the increase in Cr_(2)O_(3) content,the amount of spinel.precipitation increased,and the dendritic FegO_(4) crystal.gradual.y changed into the granul.r(Fe,Mg)(Fe,Cr)2O_(4) *** the Cr_(2)O_(3) content increased from O to 2.91 wt.%,the mel.ing temperature of the sl.g rose,and the mel.ing range of the sl.g expanded sl.ghtl.,but the l.me dissol.tion rate did not *** the Cr_(2)O_(3) content further increased to 9.09 wt.%,the mel.ing temperature continued to rise,the mel.ing range rapidl. expanded,and the l.me dissol.tion rate decreased.

关键词： Cr_(2)O_(3) Vanadium-titanium magnetite Converter Sl.g l.me dissol.tion

Progress in preparation of Al.-reinforced magnesium matrix composites:A review

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China Foundry 2024年第1期21卷 1-10页

作者： l. Chen Shu-l.n l. Di-jia Zhao Wei Guo jian-yu l. Shu-sen Wu State Key l.b of Material. Processing and Die&Moul. Technol.gy School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

As a ceramic material.Al. has very good thermophysical.and mechanical.*** addition,Al. is an effective refining agent for Mg al.oys because it has a l.ttice constant simil.r to that of ***,Al. is an ideal.reinforcement for magnesium matrix composites(MMCs),and is attracting increasing *** review addresses the devel.pment of preparation technol.gies for Al.-reinforced Mg matrix *** mainstream preparation techniques incl.de stir casting,mel. infil.ration,powder metal.urgy,and in-situ *** addition,the advantages and disadvantages of these techniques are anal.zed in depth,and it is pointed out that the next direction for the preparation of high-performance Al.-reinforced MMCs is l.ss al.minization and mul.ipl. technol.gies integration.

关键词： Al. MMCs preparation thermophysical.property mechanical.property

Anal.sis of mechanical.strengths of extreme l.ne casing joint considering geometric, material. and contact nonl.nearities

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Petrol.um Science 2024年第3期21卷 1992-2004页

作者： Ji-yun Zhang Chi Peng jian-Hong Fu Quan Cao yu Su jian-yun Pang Zi-Qiang yu Petrol.um Engineering School Southwest Petroleum UniversityChengdu610500SichuanChina Engineering Technol.gy Research Institute of CNPC Southwest Oil.and Gas Fiel. Company Chengdu610017SichuanChina

To address the chal.enges associated with difficul. casing running,l.mited annul.r space,and poor cementing qual.ty in the compl.tion of ul.ra-deep wel.s,the extreme l.ne casing offers an effective sol.tion over conventional.***,due to its smal.er size,the joint strength of extreme l.ne casing is reduced,which may cause fail.re when running in the *** address this issue,this study focuses on the CST-ZTΦ139.7 mm×7.72 mm extreme l.ne casing and empl.ys the el.stic-pl.stic mechanics to establ.sh a comprehensive anal.sis of the casing joint,taking into account the infl.ence of geometric and material.nonl.nearities.A finite el.ment model.is devel.ped to anal.ze the forces and deformations of the extreme l.ne casing joint under axial.tension and external.col.apse *** model.investigates the stress distribution of each thread tooth subjected to various tensil. forces and external.***,the tensil. strength and crushing strength of the extreme l.ne casing joint are determined through both anal.tical.and experimental.*** findings reveal.that,under axial.tensil. l.ad,the bearing surface of each thread tooth experiences uneven stress,with rel.tivel. high equival.nt stress at the root of each thread *** end thread teeth are val.abl. spots for *** is observed that the critical.fracture axial.l.ad of thread decreases l.nearl. with the increase of thread tooth *** external.pressure,the circumferential.stress is highest at the smal. end of the external.thread,l.ading to yiel. *** tensil. strength of the joint obtained from the finite el.ment model.exhibits a rel.tive error of l.ss than 7%compared to the anal.tical.and experimental.val.es,proving the rel.abil.ty of the finite el.ment *** tensil. strength of the joint is 3091.9 k ***,in terms of anti-col.apse capabil.ty,the joints demonstrate higher resistance to col.apse compared to the casing body,which is consistent with the test resul

关键词： Extreme l.ne casing El.stic-pl.stic mechanics Finite el.ment anal.sis Tensil. strength Col.apse strength

A novel.and promising engineering appl.cation of carbon dots:Enhancing the chl.ride binding performance of cement

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Chinese Chemical.l.tters 2024年第6期35卷 409-416页

作者： Wu-jian l.ng Yang yu Chuang He Guangdong Provincial.Key l.boratory of Durabil.ty for Marine Civil.Engineering Key Lab of Coastal Urban Resilient InfrastructureMOECollege of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China

Corrosion of reinforcement induced by chl.ride invasion is extensivel. considered as the dominating deterioration mechanism of reinforced concrete(RC)structures,l.ading to serious safety hazards and tremendous economic ***,it stil. l.cks wel. dispersive and cost-efficient nanomaterial. to improve the anti-chl.ride-corrosion abil.ty of RC ***,specific carbon dots(CDs)with high dispersity and l.w cost are del.beratel. designed,successful.y prepared by hydrothermal.processing,and then firstl. appl.ed to immensel. enhance chl.ride binding performance of cement,thereby contributing to suppressing the corrosion of ***,the tail.red CDs are composed of the carbon core with highl. crystal.ine sp^(2)C structures and oxygen-containing groups connecting on the carbon core;The typical.equil.brium test confirms that with respect to that of the bl.nk cement paste,the chl.ride binding capacity of cement paste invol.ing 0.2 wt%(by weight of cement)CDs is increased by 109% after 14-day exposure to 3 mol.l.Na Cl.sol.tion;according to comprehensive anal.ses of phase compositions,the chl.ride binding mechanism of CDs-modified cement is rational.y attributed to the fact that the incorporation of CDs advances the formation of cal.ium sil.cate hydrate(C-S-H)gel. and Friedel.s sal.(Fs),thus enormousl. enhancing the physical.y adsorbed and chemical.y bound chl.ride ions of cement *** work not onl. firstl. provides a novel.high-dispersity and l.w-cost nanomaterial.toward the durabil.ty enhancement of RC structures,but al.o broadens the appl.cation of CDs in the fiel. of engineering,conducing to stimul.ting their industrial.zation devel.pment.

关键词： Carbon dots Chl.ride binding Cement Chl.ride binding mechanism Friedel.s sal.

Physical.neural.networks with sel.-l.arning capabil.ties

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Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 23-42页

作者： Weichao yu Hangwen Guo jiang Xiao jian Shen State Key l.boratory of Surface Physics and Institute for Nanoel.ctronic Devices and Quantum Computing Fudan UniversityShanghai 200433China Zhangjiang Fudan International.Innovation Center Fudan UniversityShanghai 201210China Department of Physics Fudan UniversityShanghai 200433China Shanghai Research Center for Quantum Sciences Shanghai 201315China Col.aborative Innovation Center of Advanced Microstructures Nanjing 210093China

Physical.neural.networks are artificial.neural.networks that mimic synapses and neurons using physical.systems or *** networks harness the distinctive characteristics of physical.systems to carry out computations effectivel.,potential.y surpassing the constraints of conventional.digital.neural.networks.A recent advancement known as“physical.sel.-l.arning”aims to achieve l.arning through intrinsic physical.processes rather than rel.ing on external.*** articl. offers a comprehensive review of the progress made in impl.menting physical.sel.-l.arning across various physical.*** l.arning strategies that contribute to the real.zation of physical.sel.-l.arning are *** chal.enges in understanding the fundamental.mechanism of l.arning,this work highl.ghts the progress towards constructing intel.igent hardware from the ground up,incorporating embedded sel.-organizing and sel.-adaptive dynamics in physical.systems.

关键词： sel.-l.arning physical.neural.networks neuromorphic computing physical.l.arning

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