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RAPID SOLIDIFICATIOn.OF HYPEREUTECTIC SILVER-COPPERALLOY In.DROP TUBE

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Acta Metallurgica Sin.ca(En.lish Letters) 1999年第3期12卷 251-258页

作者： wang, n. Wei, B. n.rthwestern.Polytechn.cal Un.v Xi'an China

The Ag-50wt%Cu hypereutectic alloy was solidified an. in.estigated in.a 3 m drop tube, an. its n.cleation.an. microstructure characteristics were explored also. The results showed that (1) with the decrease of droplet size, the structural morphology tran.forms from the den.rites with lon. trun. an. thin.short secon.ary arms to fin. den.ritic structures; (2) the den.ritic growth is main.y con.rolled by solute diffusion.within.the whole un.ercoolin. regime, while the in.luen.e of thermal diffusion.con.rolled growth becomes stron.er above a critical un.ercoolin. about 268 K; (3) the refin.men. of den.ritic structure is caused by large amoun.s of n.clei within.droplet; (4) when.droplet diameter is smaller than.300 micron. the un.ercoolin. an. growth velocity were estimated to be greater than.268 K an. 290 mm/s respectively, while the solute trappin. effect may occur.

关键词： Eutectics Morphology Rapid solidification

An.in.elligen. active probin. an. trace-back scheme for IoT an.maly detection

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Digital Commun.cation. an. n.tworks 2024年第1期10卷 168-181页

作者： Luyin. wang Lin.yi Chen.n.al n.Xion. An.en. Liu Tian.wang Mian.ion. Don. School of Computer Scien.e an. En.in.erin. Central South UniversityChangsha 410083China Departmen. of Computer Scien.e an. Mathematics Sul Ross State UniversityAlpineTX 79830USA Artificial In.elligen.e an. Future n.tworks Beijing Normal University&UICZhuhai 519087China Departmen. of In.ormation.an. Electron.c En.in.erin. Muroran Institute of TechnologyMuroran 050-8585Japan

Due to their simple hardware,sen.or n.des in.IoT are vuln.rable to attack,leadin. to data routin. blockages or malicious tamperin.,which sign.fican.ly disrupts secure data *** In.elligen. Active Probin. an. Trace-back Scheme for IoT An.maly Detection.APTAD)is proposed to collect in.egrated IoT data by recruitin. Mobile Edge Users(MEUs).(a)An.in.elligen. un.upervised learn.n. approach is used to iden.ify an.malous data from the collected data by MEUs an. help to iden.ify an.malous n.des.(b)Recruit MEUs to trace back an. propose a series of trust calculation.methods to determin. the trust of n.des.(c)The last,the n.mber of active detection.packets an. detection.paths are design.d,so as to accurately iden.ify the trust of n.des in.IoT at the min.mum cost of the n.twork.A large n.mber of experimen.al results show that the recruitin. cost an. average an.maly detection.time are reduced by 6.5 times an. 34.33%respectively,while the accuracy of trust iden.ification.is improved by 20%.

关键词： An.maly detection In.ern.t of thin.s In.egratin. data collection Mobile edge users In.elligen.

A Learn.n.-based Con.rol Framework for Fast an. Accurate Man.pulation.of a Flexible Object

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Journ.l of Bion.c En.in.erin. 2024年第4期21卷 1761-1774页

作者： Jun.i wang Xiaofen. Xion. Silvia Tolu Stan.slav n.Gorb Departmen. of Electrical an. Photon.cs En.in.erin. Technical University of DenmarkAnker Engelunds Vej 101Kongens LyngbyZealand2800Denmark SDU Biorobotics Mærsk Mc-Kinney Møller InstituteUniversity of Southern Denmark(SDU)Campusvej 55Odense MFunen5230Denmark Departmen. Fun.tion.l Morphology an. Biomechan.cs Zoological InstituteUniversity of KielAm Botanischen Garten 1–9D-24118KielSchleswig-HolsteinGermany

This paper presen.s a learn.n.-based con.rol framework for fast(3 times of others).Besides,motion.trackin. errors are greatly reduced to 13.29 an. 22.36 of con.tan. impedan.e con.rol by the OIAC of the proposed *** ad... 详细信息

This paper presen.s a learn.n.-based con.rol framework for fast(n. accurate man.pulation.of a flexible object,i.e.,whip *** framework con.ists of a motion.plan.er learn.d or optimized by an.algorithm,On.in. Impedan.e Adaptation.Con.rol(OIAC),a sim2real mechan.sm,an. a visual feedback *** experimen.al results show that a soft actor-critic algorithm outperforms three Deep Rein.orcemen. Learn.n.(DRL),a n.n.in.ar optimization.an. a gen.tic algorithm in.learn.n. gen.ralization.of motion.*** can.greatly reduce average learn.n. trials(ton. maximize average rewards(to>3 times of others).Besides,motion.trackin. errors are greatly reduced to 13.29 an. 22.36 of con.tan. impedan.e con.rol by the OIAC of the proposed *** addition.the trajectory similarity between.simulated an. physical whips is *** presen.ed framework provides a n.w method in.egratin. data-driven.an. physics-based algorithms for con.rollin. fast an. accurate arm man.pulation.of a flexible object.

关键词： Deep rein.orcemen. learn.n. Deformable object man.pulation Variable impedan.e con.rol Sim2real Visual trackin.

STRUCTURE An. MAGn.TIC PROPERTIES OF YFe_(12-x)Ti_x COMPOUn.S

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Acta Metallurgica Sin.ca(En.lish Letters) 2001年第3期14卷 171-176页

作者： B. Fuquan. J.L. wang, n. Tan., W.Q. wang, Z.Z. Guo, G.H. Wu an. F.M. Yan. (State Key Laboratory of Magn.tism, In.titute of Physics, The Chin.se Academy of Scien.es, Beijin. 100080, Chin.) (Departmen. of Physics, In.er Mon.olia n.rmal Un.versity, Huhhot 01 State Key Lab. of Magn.tism Inst. of Phys. Chinese Acad. of Sci. Beijing 100080 China

The structure an. magn.tic properties of the YFe12-xTix compoun.s (x=0.85, 1.00, 1.10, 1.20 an. 1.30) have been.in.estigated. Both the thermomagn.tic an.lysis an. X-ray diffraction.pattern. show that all compoun.s studied are almost sin.le phase an. crystallize in.the ThMn.2-type structure. The lattice parameters a, c an. un.t cell volume V in.rease mon.ton.usly with the in.rease of Ti con.en.. Curie temperature Tc is almost in.epen.en. on.the Ti con.en. while the spon.an.ous magn.tization.M0, the an.sotropy field Ba an. the an.sotropy con.tan. K1 decrease mon.ton.usly with the in.rease of Ti con.en. an. the temperature in.reases from 1.5 K to 293 K.

关键词： Iron Magn.tic properties Structure (composition. Titan.um Yttrium

Fast an. Accurate Predictor-Corrector Methods Usin. Feedback-Accelerated Picard Iteration.for Stron.ly n.n.in.ar Problems

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Computer Modelin. in.En.in.erin. & Scien.es 2024年第5期139卷 1263-1294页

作者： Xuechuan.wang Wei He Haoyan. Fen. Satya n.Atluri School of Astron.utics Northwestern Polytechnical UniversityXi’an710072China Departmen. of Mechan.cal En.in.erin. Texas Tech UniversityLubbock79409USA

Although predictor-corrector methods have been.exten.ively applied,they might n.t meet the requiremen.s of practical application. an. en.in.erin. tasks,particularly when.high accuracy an. efficien.y are n.cessary.A n.vel class of correctors based on.feedback-accelerated Picard iteration.FAPI)is proposed to further en.an.e computation.l *** optimal feedback terms that do n.t require in.ersion.of matrices,sign.fican.ly faster con.ergen.e speed an. higher n.merical accuracy are achieved by these correctors compared with their coun.erparts;however,the computation.l complexities are comparably *** advan.ages en.ble n.n.in.ar en.in.erin. problems to be solved quickly an. accurately,even.with rough in.tial guesses from elemen.ary *** proposed method offers flexibility,en.blin. the use of the gen.rated correctors for either bulk processin. of collocation.0}des in.a domain.or successive correction. of a sin.le n.de in.a fin.te differen.e *** our method,the fun.tion.l formulas of FAPI are discretized in.o n.merical forms usin. the collocation.*** collocated iteration.formulas can.directly solve n.n.in.ar problems,but they may require sign.fican. computation.l resources because of the man.pulation.of *** address this,the collocated iteration.formulas are further con.erted in.o fin.te differen.e forms,en.blin. the design.of lightweight predictor-corrector algorithms for real-time *** gen.rality of the proposed method is illustrated by derivin. n.w correctors for three common.y employed fin.te-differen.e approaches:the modified Euler approach,the Adams-Bashforth-Moulton.approach,an. the implicit Run.e-Kutta ***,the updated approaches are tested in.solvin. stron.ly n.n.in.ar problems,in.ludin. the Matthieu equation.the Duffin. equation.an. the low-earth-orbit trackin. *** n.merical fin.in.s con.irm the computation.l accuracy an. efficien.y of the derived predictor-correc

关键词： Predictor-corrector method feedback-accelerated Picard iteration n.n.in.ar dyn.mical system real-time computation

FORMATIOn.OF MAn.An.SE SILICIDE THIn.FILMS BY SOLID PHASE REACTIOn

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Acta Metallurgica Sin.ca(En.lish Letters) 2002年第2期15卷 221-226页

作者： E. Q. Xie, W. W. wang, n. Jian. an. D. Y. He Departmen. of Physics, Lan.hou Un.versity, Lan.hou 730000, Chin. Departmen. of Physics Lanzhou UniversityLanzhou 730000China

Man.an.se silicide Mn.i_(2-x) thin.films have been.prepared on.0}type silicon.ubstrates through solid phase reaction. The heterostructures were an.lyzed by X-ray diffraction.Rutherford backscatterin. spectroscopy, Fourier tran.form in.rared tran.mittan.e spectroscopy an.the four-poin. probe techn.que. The results show that two man.an.se silicides have been.formedsequen.ially via the reaction.of thin.layer Mn.with Si substrate at differen. irradiation.an.ealin.stages, i.e., Mn.i at 450 deg C an. Mn.i_(1.73) at 550 deg C. Mn.i_(1.73) phase exhibits preferredgrowth after irradiation.with in.rared. In.situ four-poin. probe measuremen.s of sheet resistan.edurin. in.rared irradiation.an.ealin. show that n.cleation.of Mn.i an. phase tran.formation.of Mn.ito MaSi_(1.73) occur at 410 deg C an. 530 deg C, respectively; the Mn.i phase shows metallicbehavior, while Mn.i_(1.73) exhibits semicon.uctin. behavior. Characteristic phon.n.ban.s ofMn.i_(2-x) silicides, which can.be used for phase iden.ification.alon. with con.en.ion.l XRDtechn.ques, have been.observed by FTIR spectroscopy.

关键词： man.an.se silicide in.situ sheet resistan.e solid phase reaction in.rared spectra

The in.eraction.of the structure-directin. agen. with the zeolite framework determin.s german.um distribution.in.SCM-15 german.silicate

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Fron.iers of Chemical Scien.e an. En.in.erin. 2024年第5期18卷 105-114页

作者： Stoyan.P.Gramatikov Petko St.Petkov Zhen.on. wang Weimin.Yan. Georgi n.Vayssilov Faculty of Chemistry an. Pharmacy University of Sofia1126 SofiaBulgaria State Key Laboratory of Green.Chemical En.in.erin. an. In.ustrial Catalysis Sinopec Shanghai Research Institute of Petrochemical Technology Co.Ltd.Shanghai 201208China

We report results from computation.l modelin. of the relative stability of german.silicate SCM-15 structure due to differen. distribution.of german.um heteroatoms in.the double four-member rin.s(D4Rs)of the framework an. the orien.ation.of the structure directin. agen.(SDA)molecules in.the as-syn.hesized *** calculated relative en.rgies of the bare zeolite framework suggest that structures with german.um ion. clustered in.the same D4Rs,e.g.,with large n.mber of Ge–O-Ge con.acts,are the most *** simulation. of various orien.ation. of the SDA in.the pores of the german.silicate zeolite show differen. stability order-the most stable models are the structures with german.um spread amon. all ***,for SCM-15 the stabilization.due to the presen.e of the SDA an. their orien.ation.is thermodyn.mic factor directin. both the formation.of specific framework type an. Ge distribution.in.the framework durin. the *** relative stability of bare structures with differen. german.um distribution.is of min.r *** differs from SCM-14 german.silicate,reported earlier,for which the stability order is preserved in.presen.e of ***,even.for zeolites with the same chemical composition.an. SDA,the characteristics of their framework lead to differen. en.rgetic preferen.e for german.um distribution.

关键词： zeolite den.ity fun.tion.l theory structure-directin. agen. SCM-15

A core-satellite self-assembled SERS aptasen.or con.ain.n. a“biological-silen. region.Raman.tag for the accurate an. ultrasen.itive detection.of histamin.

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Food Scien.e an. Human.Welln.ss 2024年第2期13卷 1029-1039页

作者： Chen.Chen.Yin.fan. Zhan. Ximo wang Xuguan. Qiao Geoffrey I.n.Waterhouse Zhixian. Xu Key Laboratory of Food Processin. Techn.logy an. Quality Con.rol in.Shan.on. Provin.e College of Food Science and EngineeringShandong Agricultural UniversityTai’an 271018China School of Chemical Scien.es The University of AucklandAuckland 1142New Zealand

Herein.a n.vel in.erferen.e-free surface-en.an.ed Raman.spectroscopy(SERS)strategy based on.magn.tic n.n.particles(Mn.s)an. aptamer-driven.assemblies was proposed for the ultrasen.itive detection.of histamin..A core-satellite SERS aptasen.or was con.tructed by combin.n. aptamer-decorated Fe_(3)O_(4)@Au Mn.s(as the recogn.ze probe for histamin.)an. complemen.ary Dn.-modified silver n.n.particles carryin. 4-mercaptoben.on.trile(4-MBn.(Ag@4-MBn.Ag-c-Dn.)as the SERS sign.l probe for the in.irect detection.of *** an.applied magn.tic field in.the absen.e of histamin.,the assembly gave an.in.en.e Raman.sign.l at“Raman.biological-silen.”region.due to *** the presen.e of histamin.,the Ag@4-MBn.Ag-c-Dn. SERS-tag was released from the Fe_(3)O_(4)@Au Mn.s,thus decreasin. the SERS *** optimal con.ition.,an.ultra-low limit of detection.of 0.65×10^(-3)n./mL an. a lin.ar ran.e 10^(-2)-10^5 n./mL on.the SERS aptasen.or were *** histamin. con.en. in.four food samples were an.lyzed usin. the SERS aptasen.or,with the results con.isten. with those determin.d by high performan.e liquid *** presen. work highlights the merits of in.irect strategies for the ultrasen.itive an. highly selective SERS detection.of small biological molecules in.complex matrices.

关键词： Surface-en.an.ed Raman.spectroscopy Raman.biological-silen. region Aptamer Histamin. detection Un.versal SERS-tag

Recen. developmen.s in.three-dimen.ion.l Zn.metal an.des for battery application.

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In.oMat 2024年第1期6卷 1-30页

作者： Jian.u Chen.Yizhou wang Zhen.n.n.Tian.Jin.Zhao Yan.en.Ma Husam n.Alshareef State Key Laboratory of Organ.c Electron.cs an. In.ormation.Displays(KLOEID)an. Jian.su Key Laboratory for Biosen.ors Institute of Advanced Materials(IAM)Nanjing University of Posts&Telecommunications(NUPT)Nanjingthe People's Republic of China Materials Scien.e an. En.in.erin. King Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia Suzhou Vocation.l In.titute of In.ustrial Techn.logy Suzhouthe People's Republic of China

Aqueous zin.(Zn.ion.batteries(AZIBs)are regarded as on. of the promisin. can.idates for n.xt-gen.ration.electrochemical en.rgy storage systems due to their low cost,high safety,an. en.iron.en.al ***,the commercialization.of AZIBs has been.severely restricted by the growth of den.rite at the Zn.metal *** the plan.r-structured Zn.an.des in.o threedimen.ion.l(3D)structures has proven.to be an.effective way to modulate the platin./strippin. behavior of Zn.an.des,resultin. in.the suppression.of den.rite *** review provides an.up-to-date review of 3D structured Zn.metal an.des,in.ludin. workin. prin.iples,design.curren. status,an. future *** aim to give the readers a comprehen.ive un.erstan.in. of 3D-structured Zn.an.des an. their effective usage to en.an.e AZIB performan.e.

关键词： 3D metal an.des aqueous Zn.ion.batteries den.rite suppression Zn.den.rite Zn.metal an.des