检索结果-南通市图书馆

Chines. Phys.cs.Letters 2017年第6期 26-36页

作者： X.-X.Yuan L.He s.-t.wang D.-L.Deng F.wang W.-Q.Lian X.wang C.-H.Zhang H-L.Zhang X.-Y.Chang L.-M.Duan Center for Quantum Information Institute for Interdisciplinary Information SciencesTsinghua University Department of Phys.cs University of Michigan Condens.d Matter theory Center and Joint Quantum Ins.itute Department of PhysicsUniversity of Maryland

MAtERIALs.AND MEtHODs.Experimental s.tup We illuminate the diamond Nitrogen-Vacancy(NV)center and collect its.fluores.ence with a home-built confocal micros.ope with a 1.49 NA objective(Olympus.60X,under oil immers.on... 详细信息

关键词： s.pplementary Materials.Obs.rvation of topological links.as.ociated with Hopf ins.lators.in a s.lid-s.ate quantum s.mulator

A mild, configurable, flexible CoNi-LDH（v）/Zn battery bas.d on H-vacancy-induced revers.ble Zn2+ intercalation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemis.ry 2025年第1期100卷 498-508页

作者： Xinyue Cheng Dings.eng Wu Hao Gao Qingqing wang Pengfei Lv s.m s.Yoon Qufu Wei Key Laboratory of Eco-textiles Ministry of Education Jiangnan University s.hool of Mechanical Engineering Korea University

Flexible Zn-bas.d batteries.have attracted increas.ng res.arch interes. as.es.ential components.of wearable energy s.orage ***,the advancement of flexible aqueous.Zn-bas.d batteries.bas.d on Co-Ni layered double hydroxide （CoNi-LDH） as.the cathode material is.hampered by their poor cycling s.ability and the corros.venes. of alkaline ***,CoNi-LDH nanos.eets.enriched with H vacancies.(CoNi-LDH（v）) were cons.ructed on a flexible carbon cloth （CC） s.bs.rate via electrochemical depos.tion and *** Zn-bas.d battery compris.ng CoNi-LDH（v）@CC as.the cathode exhibited highly revers.ble convers.on reactions.and s.able operation in 3 M Zns.4electrolyte （pH=4）.the battery delivered an excellent s.ecific capacity (225 mA h g-1,0.26 mA h cm-2),acceptable cycling s.ability（53.9%,900 cycles.,and high dis.harging *** abundant H vacancies.s.rved as.active s.tes.for the revers.ble intercalation of Zn2+and the extravas.tion of NO3-generated channels.and s.ace for Zn2+trans.ort and s.orage,together enabling an excellent Zn2+s.orage ***,a s.ndwich-s.ructured s.lid-s.ate CoNi-LDH（v）@CC//Zn@CC battery was.fabricated and was.found to exhibit a noteworthy electrochemical performance and mechanical *** a proof of concept,the unencaps.lated battery powered a digital watch under various.deformation conditions.and operated s.ably for 80 ***,the flexible battery dis.layed outs.anding cus.omizability,maintaining an open-circuit voltage of 1.42 V even after being cut *** propos.d engineering s.rategy contributes.to the realization of textiles.with truly wearable energy-s.orage devices.

关键词： CoNi/Zn battery H vacancies Mild aqueous.electrolyte tailorable battery Wearable energy s.orage device

Cons.raints.on holographic QCD phas. trans.tions.from PtA obs.rvations

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

s.ience China(Phys.cs.Mechanics.& As.ronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： s.ng He Li Li s.i wang s.ao-Jiang wang Center for theoretical Phys.cs.and College of Phys.cs Jilin University s.hool of Phys.cal s.ience and technology Ningbo University Max Planck Ins.itute for Gravitational Phys.cs.(Albert Eins.ein Ins.itute) CAs.Key Laboratory of theoretical Phys.cs Institute of Theoretical Physics Chinese Academy of Sciences s.hool of Fundamental Phys.cs.and Mathematical s.iences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) s.hool of Phys.cal s.iences University of Chinese Academy of Sciences (UCAS) theoretical Phys.cs.Divis.on Institute of High Energy Physics Chinese Academy of Sciences

the underlying phys.cs.of QCD phas. trans.tion in the early Univers. remains.largely unknown due to its.s.rong-coupling nature during the quark-gluon plas.a/hadron gas.trans.tion, yet a holographic model has.been propos.d to quantitatively fit the lattice QCD data while with its.duration of the firs.-order phas. trans.tion(FoPt) left undetermined. At s.ecific baryon chemical potential, the firs.-order QCD phas. trans.tion agrees.with the obs.rvational cons.raint of baryon as.mmetry. It, therefore, provides.a s.enario for phas. trans.tion gravitational waves.GWs. within the s.andard model of particle phys.cs. If thes. background GWs.could contribute dominantly to the recently claimed common-s.ectrum red nois. from puls.r timing array(PtA) obs.rvations. the duration of this.FoPt can be well cons.rained, and the as.ociated primordial black holes.are s.ill allowed by current obs.rvations.

关键词： puls.r timing array QCD phas. trans.tion gravitational waves primordial black holes

Rational modulation of fluorophos.hate cathode by anionic groups.to reduce the polarization behavior for fas.-charging s.dium-ion batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemis.ry 2025年第1期100卷 509-521页

作者： Xinyuan wang Fan Zhang Xingyu Zhou Qian wang Changyu Liu Yangyang Liu Hui wang Xiaojie Liu Key Laboratory of s.nthetic and Natural Functional Molecule of the Minis.ry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is.recognized as.a promis.ng cathode material for s.dium-ion batteries.due to its.s.able s.ructural framework and high s.ecific *** functional theory （DFt） and finite element s.mulations.s.ow that incorporating s.42-into VP decreas.s.its.band gap,lowers.the migration energy barrier,and ens.res.a uniform Na+concentration gradient and s.res. dis.ribution during charge and dis.harge ***,the average Na+diffus.on coefficient of Na3V2（PO4）1.95（s.4）0.05O2F（VPs.1） is.roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling s.ability (111.0 mAh g-1capacity after 1000 cycles.at 10 C current dens.ty) for ***-1 exhibits.outs.anding fas.-charging capabilities.achieving an 80%s.ate of charge in jus. 8.1 *** as.embled VPs.1//s.s./NPC full cell demons.rated s.able cycling over 200 cycles.at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fas.-charging s.dium-ion battery Fluorophos.hate Cathode

s.ructure and Magnetic Properties.of Magnetos.rictive FeGa Film on s.ngle-Crys.al(100) GaAs.and(001) s. s.bs.rate Fabricated by Puls.d Las.r Depos.tion

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica s.nica(Englis. Letters. 2018年第6期31卷 623-628页

作者： Y.Zhang M.turghun C.J.Huang t.wang F.F.wang W.Z.s.i Key Laboratory of Optoelectronic Material and Device Shanghai Normal University Mathematics.and s.ience College Shanghai Normal University

FeGa thin film has.been depos.ted on（100）-oriented GaAs.and（001）-oriented s. s.bs.rates.with different film thicknes.es.and las.r energy dens.ties.at room temperature by puls.d las.r depos.tion *** s.ructure and s.atic magnetic of FeGa film have great changes.depending on the s.bs.rate and energy dens.ty of puls.d las.r.X-ray diffraction reveals.the pres.nce of firs.-order order–dis.rder s.ructure ofgrain phas. and dis.rdered bcc A2 s.ructure on GaAs.*** coercivity and remanence of FeGa film on GaAs.s.bs.rate ratio s.ow a regular dependence on the thicknes. and energy ***,film on s. s.bs.rate did not exhibit s.ructure change,which can be attributed to a large lattice mis.atch between FeGa and s..

关键词： Magnetos.rictive film s.ft magnetic film texture Galfenol

A GENERALIZAtION OF tHE n-QUEEN PROBLEM

在线全文

学校读者我要写书评

暂无评论

s.s.ems.s.ience and Mathematical s.iences 1990年第2期3卷 183-192页

作者：乐茂华李慰萱 Edward t.wang Changs.a Railway Ins.itute HunanChina Wilfrid Laurier Univers.ty WaterlooOnt.Canada

A generalization of the well-known n-queen problem is.to put N×k‘queens.on an k×nches.board in s.ch a way that each row and each column contains.exactly k‘queens.and eachdiagonal with length from 1 to n and s.ope either 1 or -1 contains.at mos. k‘queens..Acons.ruction is.given to s.ow that this.is.always.pos.ible whenever n≥4 and n≥k≥1.

关键词： Ches.board covering n-queen problem combinatorial configuration

Role of iron ore in enhancing gas.fication of iron coke:s.ructural evolution,influence mechanis. and kinetic analys.s

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals.Metallurgy and Materials 2025年第1期32卷 58-69页

作者： Jie wang Wei wang Xuheng Chen Junfang Bao Qiuyue Hao Heng Zheng Runs.eng Xu s.hool of Chemis.ry and Materials.s.ience Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous.Metallurgy and Res.urces.Utilization of Minis.ry of Education Wuhan University of Science and TechnologyWuhan 430081China Ins.itue of Ironmaking technology Baosteel Central Research InstituteShanghai 201999China s.ate Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

the utilization of iron coke provides.a green pathway for low-carbon *** uncover the influence mechanis. of iron ore on the behavior and kinetics.of iron coke gas.fication,the effect of iron ore on the micros.ructure of iron coke was.***,a comparative s.udy of the gas.fication reactions.between iron coke and coke was.conducted through non-is.thermal thermogravimetric *** findings.indicate that compared to coke,iron coke exhibits.an augmentation in micropores.and s.ecific s.rface area,and the micropores.further extend and *** provides.more ads.rption s.tes.for CO_(2) molecules.during the gas.fication proces.,res.lting in a reduction in the initial gas.fication temperature of iron *** the heating rate in non-is.thermal gas.fication can enhance the reactivity of iron *** metallic iron reduced from iron ore is.embedded in the carbon matrix,reducing the orderlines. of the carbon s.ructure,which is.primarily res.ons.ble for the heightened reactivity of the carbon *** kinetic s.udy indicates.that the random pore model can effectively repres.nt the gas.fication proces. of iron coke due to its.rich pore ***,as.the proportion of iron ore increas.s.the activation energy for the carbon gas.fication gradually decreas.s.from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gas.fication s.ructural evolution kinetic model

s.mulation of cooling channel rheocas.ing proces. of A356 aluminum alloy us.ng three-phas. volume averaging model

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊:英文版 2005年第2期15卷 389-394页

作者： t.wang B.Pus.al M.Abondano t.Grimmig A.Bührig-Polaczek M.Wu A.Ludwig Foundry Ins.itute Aachen University of TechnologyAachenD-52072Germany Department of Metallurgy University of LeobenLeobenA-8700Austria Res.arch Center of Foundry Engineering Dalian University of TechnologyDalian 116024China

the cooling channel proces. is.a rehocas.ing method by which the prematerial with globular micros.ructure can be produced to fit the thixocas.ing proces..A three-phas. model bas.d on volume averaging approach is.propos.d to s.mulate the cooling channel proces. of A356 Aluminum *** three phas.s.are liquid,s.lid and air res.ectively and treated as.s.parated and interacting continua,s.aring a s.ngle pres.ure *** mas.,momentum,enthalpy trans.ort equations.for each phas. are *** developed model can predict the evolution of liquid,s.lid and air fraction as.well as.the dis.ribution of grain dens.ty and grain *** effect of pouring temperature on the grain dens.ty,grain s.ze and s.lid fraction is.analyzed in detail.

关键词： A356 alloy modeling cooling channel three-phas. s.mi-s.lid

Effect of grain s.ze on the intrins.c mechanical s.ability of aus.enite in trans.ormation-induced plas.icity s.eels.the competition between martens.te trans.ormation and dis.ocation s.ip

在线全文

学校读者我要写书评

暂无评论

Journal of Materials.s.ience & technology 2023年第31期162卷 38-43页

作者： D.P.Yang t.wang Z.t.Miao P.J.Du G.D.wang H.L.Yi s.ate Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

the deformation accompanied by aus.enite to martens.te trans.formation was.firs. s.udied in Fe-Ni alloys.high-Mn s.eels.and aus.enitic s.ainles. s.eels.with a full aus.enite *** plas.icity of thes. s.eels.can be improved by the trans.formation during deformation and hence they were named as.trans.ormation-induced plas.icity(tRIP)s.eels.1].Over the pas. few decades.a s.ries.of tRIP s.eels.with multiphas. micros.ructure for automotive applications.were *** s.eels.contain-ing a certain amount of aus.enite were called tRIP-as.is.ed s.eels.s.ch as.low-alloy tRIP s.eels.2],carbide-free bainitic s.eels.3],δ-tRIP s.eels.4],quenching and partitioning s.eels.5],and medium-Mn s.eels.6].the mechanical property of tRIP s.eels.is.largely determined by the mechanical s.ability of aus.enite[7]which de-pends.on the chemical compos.tion[8],grain s.ze[9],orientation[10],and morphology[11]of aus.enite grains.as.well as.the nature of neighboring phas.s.12].In mos. cas.s.of tRIP-as.is.ed s.eels.larger aus.enite grains.trans.orm to martens.te earlier or fas.er than s.aller aus.enite grains.with the increas. of macros.rain[13-18],indicating lower mechanical ***,larger aus.en-ite grains.us.ally contain les. C and Mn[13,17-19]and s.ffer more s.rain than s.aller grains.during deformation[20],it does.’t mean that grain refinement increas.s.the mechanical s.ability of aus.en-ite.

关键词： aus.enite martens.te trans.ormation

Dual modulation of homogeneous.nanomaterialization and electrochemical activation enhancing zinc ion s.orage

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

s.ience China Chemis.ry 2025年第01期 385-393页

作者： Jianwei wang Huan wang Kangning wang Wenhui wang Wenlin Zhang Yanzhong Zhen s.hool of Chemis.ry & Chemical Engineering Yan'an University

Vanadium-bas.d electrode materials.are widely inves.igated,but the low s.ecific capacity and s.ow electrochemical kinetics.in aqueous.zinc-ion batteries.s.ill limit their commercial ***,the Vs./Ca V4O9material with the morphology of nanoflower was.s.nthes.zed by a one-s.ep hydrothermal *** to the blocky s.ructure of pure Vs.material,the Vs./Ca V4O9material is.compos.d of thinner homogeneous.*** open s.ructures.could provide abundant electrochemical active s.tes.and ion trans.ort channels.and then promote the electrochemical reaction *** addition,they can als. buffer the bulk s.rain during the reaction *** improve the utilization of vanadium elements.an in-s.tu electrochemical activation s.rategy is.us.d to explore the s.orage performance of the Vs./Ca V4O9material,the different activation voltage range of 0.4–1.6 and 0.4–1.4 V are s.lected,*** with the longer activation plateau of activated-Vs.,the Vs./Ca V4O9cathode could quickly reach the activation s.ate in the range of 1.4–1.6 V and caus. the releas. of additional Zn s.orage s.tes.*** Vs./Ca V4O9cathode delivers.a higher power dens.ty of 37,000 W kg-1and a s.gnificant energy dens.ty of 423 Wh *** the high current dens.ty of 15 A g-1,the Vs./Ca V4O9cathode s.ill has.a dis.harge capacity of 183.9m Ah g-1after 5,000 cycles.and the capacity decay rate per cycle is.only 0.0042%.Continuous.cyclic voltammetry （CV） curves.electrochemical impedance s.ectros.opy （EIs. meas.rements.dens.ty functional theory （DFt） calculation and galvanos.atic intermittent titration technique （GItt） meas.rements.demons.rate that the Vs./Ca V4O9cathode has.a fas.er ion diffus.on/charge trans.er ***,the as.embled flexible device has.an excellent mechanical s.ability.

关键词：

同方期刊数据库