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In.lusion.of CoTiO_(3) to ameliorate the re/dehy.rogen.tion.properties of the Mg–n.–Al sy.tem

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Journ.l of Magn.sium an. Alloy. 2024年第3期12卷 1215-1226页

作者： n.A.Ali n.y.y.sn.zam n.A.Sazelee Sami-ullah Rather Haizhen.liu M.Ismail En.rgy.Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Departmen. of Chemical an. Materials En.in.erin. King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guan.xi n.vel Battery.Materials Research Cen.er of En.in.erin. Techn.logy School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key.Laboratory.of Featured Metal Materials an. Life-Cy.le Safety.for Composite Structures Nanning 530004China

For the first time,the MgH_(2)–n.AlH_(4)(ratio 4:1)destabilized sy.tem with CoTiO_(3) addition.has been.*** CoTiO_(3)-doped MgH_(2)–n.AlH_(4) sample begin. to dehy.rogen.te at 130℃,which is declin.d by.40℃ compared to the un.oped MgH_(2)–n.AlH_(4).Moreover,the de/rehy.rogen.tion.kin.tics characteristics of the CoTiO_(3)-doped MgH_(2)–n.AlH_(4) were greatly.*** the in.lusion.of CoTiO_(3),the MgH_(2)–n.AlH_(4) composite absorbed 5.2 wt.%H_(2),higher than.un.oped MgH_(2)–n.AlH_(4).In.the con.ext of dehy.rogen.tion.the CoTiO_(3)-doped MgH_(2)–n.AlH_(4) sample desorbed 2.6 wt.%H_(2),almost doubled compared to the amoun. of hy.rogen.desorbed from the un.oped MgH_(2)–n.AlH_(4) *** activation.en.rgy.obtain.d by.the Kissin.er an.ly.is for MgH_(2) decomposition.was sign.fican.ly.lower by.35.9 kJ/mol than.the un.oped MgH_(2)–n.AlH_(4) *** reaction.mechan.sm demon.trated that n.w phases of MgCo an. AlTi_(3) were gen.rated in.situ durin. the heatin. process an. are likely.to play.a substan.ial cataly.ic fun.tion.an. be useful in.amelioratin. the de/rehy.rogen.tion.properties of the destabilized MgH_(2)–n.AlH_(4) sy.tem with the in.lusion.of CoTiO_(3).

关键词： Destabilize sy.tem Magn.sium hy.ride Sodium alan.te Hy.rogen.storage Additive.

Effect of Al_(2)O_(3)on.the Mechan.cal Properties of(B_(4)C+Al_(2)O_(3))/Al n.utron.Absorbin. Materials

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Acta Metallurgica Sin.ca(En.lish Letters) 2024年第8期37卷 1411-1420页

作者： J.X.Cai B.M.Shi n.Li y.liu Z.G.Zhan. y.n.Zan.Q.Z.Wan. B.L.Xiao Z.y.Ma Shi‑Chan.xu In.ovation.Cen.er for Advan.ed Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key.Laboratory.of n.clear Materials an. Safety.Assessmen. Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China n.clear Equipmen. Division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China Departmen. of Materials Scien.e School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)C/Al composites are widely.utilized as n.utron.absorbin. materials for the storage an. tran.portation.of spen. n.clear *** order to improve the high-temperature mechan.cal properties of B_(4)C/Al composites,in.situ n.n.-Al_(2)O_(3)was in.roduced utilizin. oxide on.Al powder *** this study.the Al_(2)O_(3)con.en. was adjusted by.utilizin. spheroid Al powder with vary.n. diameters,thereby.in.estigatin. the impact of Al_(2)O_(3)con.en. on.the ten.ile properties of(B_(4)C+Al_(2)O_(3))/Al *** was foun. that the pin.in. effect of Al_(2)O_(3)on.the grain.boun.aries could hin.er the recovery.of dislocation. an. lead to dislocation.accumulation.at high *** the result,with the in.rease in.Al_(2)O_(3)con.en. an. the decrease in.grain.size,the high-temperature stren.th of the composites in.reased *** fin.st Al powder used in.this in.estigation.had a diameter of 1.4μm,whereas the resultan. composite exhibited a maximum stren.th of 251 MPa at room temperature an. 133 MPa at 350℃,surpassin. that of tradition.l B_(4)C/Al composites.

关键词： Al matrix composites n.utron.absorbin. materials (B_(4)C+Al_(2)O_(3))/Al composites High-temperature stren.th

Hard y.t tough an. self-lubricatin.(Cun.Tin.Cr)C_(x) high-en.ropy.n.n.composite films:Effects of carbon.con.en. on.structure an. properties

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Journ.l of Materials Scien.e & Techn.logy 2024年第6期173卷 20-30页

作者： y.T.Li X.M.Chen.X.K.Zen. M.liu X.Jian. y.X.Len. Key.Laboratory.of Advan.ed Techn.logies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Key.Laboratory.of n.ise an. Vibration.Research Institute of AcousticsChinese Academy of SciencesBeijing 100190China State Key.Laboratory.of Acoustics Institute of AcousticsChinese Academy of SciencesBeijing 100190China School of Mechan.cal an. Electrical En.in.erin. Mianyang Teachers’CollegeMianyang 621000China

The sin.le-phase high-en.ropy.alloy.film is difficult to meet severe friction.con.ition. due to its low hardn.ss an. high friction.***-composite structure film is composed of at least two separated phases,showin. the properties of stren.th an. toughn.ss in.egration.an. excellen. wear *** design.of n.n.composite structures can.effectively.improve the mechan.cal properties an. tribological properties of high-en.ropy.alloy.*** this study.the(Cun.Tin.Cr)C_(x) n.n.composite high-en.ropy.films(HEFs)in.egrated with high hardn.ss,high toughn.ss,an. self-lubrication.were sy.thesized by.the double-target co-sputterin. *** effect of carbon.con.en. on.microstructure,mechan.cal properties,an. tribological properties of(Cun.Tin.Cr)C_(x) films was *** the in.rease of carbon.con.en. in.the HEFs,the carbon.atoms preferen.ially.react with Ti,n.,an. Cr to form a(Tin.Cr)C ceramic-rein.orced phase,an. then.the excess carbon.atoms precipitate in.the form of amorphous carbon.a-C)lubricatin. phase in.the *** structure of the HEFs chan.es from an.amorphous structure to a n.n.composite structure of amorphous(amorphous Cun.Tin.Cr phase+a-C phase)/n.n.cry.tallin.(Tin.bCr)C *** the carbon.con.en. is about 21.2 at.%,the carbide phase in.the film reaches saturation.an. the hardn.ss an. modulus of the films are highest,which are 18 GPa an. 228 GPa,*** HEFs with a carbon.con.en. of 44.0 at.%show the best toughn.ss an. tribological properties with a friction.coefficien. of 0.16 an. a wear rate of 2.4×10^(-6) mm^(3)/(n.m),which is main.y.attributed to the excellen. resistan.e to fatigue crack growth an. the in.erfacial lubricatin. lay.r formed in.the friction.*** n.n.composite(Cun.Tin.Cr)C_(x) HEFs show very.promisin. application.prospect in.the field of friction.protection.

关键词： High-en.ropy.films n.n.composite Double-target co-sputterin. Stren.then.n.-toughen.n. Tribological properties

Solution.of the Cen.er Problem for a Class of Poly.omial Differen.ial Sy.tems

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Acta Mathematica Sin.ca,En.lish Series 2024年第7期40卷 1685-1696页

作者： Chan. Jian.liu Jaume Llibre Rafael Ramírez Valen.ín.Ramírez School of Mathematics(Zhuhai) Sun Yat-sen UniversityZhuhai519086P.R.China Departamen. de Matemàtiques Universitat Autònoma de Barcelona08193BellaterraBarcelonaCataloniaSpain Departamen. d’En.in.0}ria In.ormàtica i Matemàtiques Universitat Rovira i VirgiliAvinguda dels Paiïsos Catalans 2643007TarragonaCataloniaSpain

Con.ider the poly.omial differen.ial sy.tem of degree m of the form x=-y.1+μ(a_(2)x-a_(1)y.)+x(v(a_(1)x+a_(2)y.+Ω_(m-1)(x,y.),y.x(1+μ(a_(2)x-a_(1)y.)+y.v(a_(1)x+a_(2)y.+Ω_(m-1)(x,y.),whereμan.νare real n.mbers such that(μ^(2)+v^(2))(μ+v(m-2))(a_(1)^(2)+a_(2)^(2))≠m>2 an.Ω_(m−1)(x,y.is a homogen.us poly.omial of degree m−1.A con.ecture,stated in.*** Equation. 2019,suggests that when.=1,this differen.ial sy.tem has a weak cen.er at the origin.if an. on.y.if after a con.en.en. lin.ar chan.e of variable(x,y.→(X,y.the sy.tem is in.arian. un.er the tran.formation.X,y.t)→(−X,y.−t).For every.degree m we prove the exten.ion.of this con.ecture to an.0}value ofνexcept for a fin.te set of values ofμ.

关键词： Cen.er problem poly.omial differen.ial sy.tem

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： Luy.n. Wan. Lin.y. Chen.n.al n.Xion. An.en. liu Tian.Wan. 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.

In.tial Experien.e of n.R-II Fluorescen.e Imagin.-Guided Surgery.in.Foot an. An.le Surgery

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En.in.erin. 2024年第9期40卷 19-27页

作者： Xiaoxiao Fan.Jie y.n. Huwei n. Qimin. Xia Xiaolon. liu Tian.ian. Wu Lin.Li Paras n.Prasad Chao liu Hui Lin.Jun.Qian Departmen. of Gen.ral Surgery Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou 310016China Cen.re for Optical an. Electromagn.tic Research&In.ern.tion.l Research Cen.er for Advan.ed Photon.cs College of Optical Science and EngineeringZhejiang UniversityHangzhou 310058China Departmen. of Orthopedics Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou 310016China In.titute for Lasers Photonicsand BiophotonicsDepartment of ChemistryState University of New YorkBuffaloNY 14260-3000USA Zhejian. En.in.erin. Research Cen.er of Cogn.tive Healthcare Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou 310016China College of Biomedical En.in.erin. an. In.trumen. Scien.e Zhejiang UniversityHangzhou 310027China

Optical imagin. in.the secon. n.ar-in.rared(n.R-II;900-1880 n.)win.ow is curren.ly.a popular research topic in.the field of biomedical *** study.aimed to explore the application.value of n.R-II fluorescen.e imagin. in.foot an. an.le surgeries.A lab-established n.R-II fluorescen.e surgical n.vigation.sy.tem was developed an. used to n.vigate foot an. an.le surgeries which en.bled obtain.n. more high-spatial-frequen.y.in.ormation.an. a higher sign.l-to-backgroun. ratio(SBR)in.n.R-II fluorescen.e images compared to n.R-I fluorescen.e images;our result demon.trates that n.R-II imagin. could provide higher-con.rast an. larger-depth images to *** ty.es of clin.cal application.scen.rios(diabetic foot,calcan.al fracture,an. lower extremity.trauma)were in.luded in.this *** the n.R-II fluorescen.e imagin. techn.que,we observed the ischemic region.in.the diabetic foot before morphological alteration.,accurately.determin.d the boun.ary.of the ischemic region.in.the surgical in.ision.an. fully.assessed the blood supply.con.ition.of the ***-II fluorescen.e imagin. can.help surgeon. precisely.judge surgical margin.,detect ischemic lesion. early.an. dy.amically.trace the perfusion.*** believe that portable an. reliable n.R-II fluorescen.e imagin. equipmen. an. addition.l fun.tion.l fluorescen. probes can.play.crucial roles in.precision.surgery.

关键词： Secon. n.ar-in.rared fluorescen.e imagin. Foot an. an.le surgery In.ocy.n.n. green Imagin.-guided surgery

Metagen.mic an.ly.is revealin. the metabolic role of microbial commun.ties in.the free amin. acid biosy.thesis of Mon.scus rice vin.gar durin. fermen.ation

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Food Scien.e an. Human.Welln.ss 2024年第4期13卷 2317-2326页

作者： Han. Gao Jian.Zhan. Li liu Lijun.Fu y.n.Zhao Germán.Mazza Xin.Zhan. Beijin. Academy.of Food Scien.es 100068 BeijingChina In.titute for Research an. Developmen. in.Process En.in.erin. Biotechnology and Alternative Energies(PROBIENCONICET-UNCo)8300 NeuquénArgentina

Free amin. acid(FAA)is the importan. compon.n. of vin.gar that in.l uen.es quality.perception.an. con.umer *** is on. of the major metabolites produced by.microorgan.sms;however,the microbial metabolic n.twork on.FAA biosy.thesis remain. *** metagen.mic an.ly.is,this work aimed to elucidate the roles of microbes in.FAA biosy.thesis durin. Mon.scus rice vin.gar *** profiles from fun.tion.l an.ly.es showed 14 domin.n. gen.ra with high con.ribution. to the metabolism *** metabolic n.twork for FAA biosy.thesis was then.con.tructed,an. the microbial distribution.in.differen. metabolic pathway. was *** results revealed that 5 fun.tion.l gen.ra were closely.in.olved in.FAA *** study.illumin.ted the metabolic roles of microorgan.sms in.FAA biosy.thesis an. provided crucial in.ights in.o the fun.tion.l attributes of microbiota in.vin.gar fermen.ation.

关键词： Mon.scus rice vin.gar Metagen.mic an.ly.is Free amin. acid sy.thesis Metabolic pathway Microbial distribution

Modelin. of ion.cy.lotron.reson.n.e frequen.y.heatin. of proton.boron.plasmas in.EHL-2 spherical tokamak

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Plasma Scien.e an. Techn.logy 2024年第10期26卷 39-48页

作者： Xian.hu WU Jin.chun.LI Jiaqi DOn. y.ejian. SHI Guoqin. liu y.n. liu Zhiqian. LOn. Buqin. ZHAn. Baoshan.y.An.y.K.Martin.PEn. Min.hen. liu Shen.hen.Key.Laboratory.of n.clear an. Radiation.Safety Institute for Advanced Study in Nuclear Energy&SafetyCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 510640People’s Republic of China Departmen. of Earth an. Space Scien.es Southern University of Science and TechnologyShenzhen 518055People’s Republic of China En. Scien.e an. Techn.logy.Developmen. Co. Ltd.and Hebei Key Laboratory of Compact FusionLangfang 065001People’s Republic of China Siemen. Shen.hen.Magn.tic Reson.n.e Ltd. Shenzhen 518057People’s Republic of China

Ion.cy.lotron.reson.n.e heatin.(ICRH)stan.s out as a widely.utilized an. cost-effective auxiliary.method for plasma heatin.,bearin. sign.fican. importan.e in.achievin. high-performan.e discharges in.p-^(11)B *** light of the specific con.ext of p-^(11)B plasma in.the EHL-2 device,we con.ucted a comprehen.ive scan.of the fun.amen.al phy.ical parameters of the an.en.a usin. the full-wave simulation.program *** prelimin.ry.result in.icated that for p-^(11)B plasma,optimal ion.heatin. parameters in.lude a frequen.y.of 40 MHz,with a high toroidal mode n.mber like n.(?)=28 to heat the majority.H *** addition.we discussed the impact of con.en.ration.of min.rity.ion.species on.ion.cy.lotron.reson.n.e heatin. when.(11)B serves as the heavy.min.rity.*** sign.fican. differen.e in.charge-to-mass ratio between.boron.an. hy.rogen.ion. results in.a con.iderable distan.e between.the hy.rid reson.n.e lay.r an. the tow in.erted cy.lotron.reson.n.e lay.r,n.cessitatin. a quite low boron.ion.con.en.ration.to achieve effective min.rity.*** also con.idered an.ther method of direct heatin. of hy.rogen.ion. in.the presen.e of boron.ion.*** is foun. that at appropriate boron.ion.con.en.ration.(X(^(11)B)~17%),the position.of the hy.rid reson.n.e lay.r approaches that of the hy.rogen.ion.cy.lotron.reson.n.e lay.r,thereby.alterin. the polarization.at this position.an. sign.fican.ly.en.an.in. hy.rogen.ion.fun.amen.al absorption.

关键词： ICRF hy.rogen.boron.fusion mode con.ersion fun.amen.al absorption

Revealin. the role of electrode poten.ial micro-en.iron.en.s in.sin.le Mn.atoms for carbon.dioxide an. oxy.en.electroly.is

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n.n. Research 2024年第9期17卷 7957-7966页

作者： Pen.chen. liu an.1} liu Kaili Wan. Shuai Shi Men.men. Jin.Jin.xiu liu Tao Qin.Qian.liu Xijun.liu Jia He Tian.in.Key.Laboratory.of Organ.c Solar Cells an. Photochemical Con.ersion School of Chemistry and Chemical EngineeringInstitute of New-Energy Materials and Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China School of Chemistry.an. Chemical En.in.erin. an. En.iron.en.al En.in.erin. Weifang UniversityWeifang 261061China Departmen. of Electrical En.in.erin. an. Automation Luoyang Institute of Science and TechnologyLuoyang 471023China In.titute for Advan.ed Study Chengdu UniversityChengdu 610106China State Key.Laboratory.of Featured Metal Materials an. Life-cy.le Safety.for Composite Structures Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China

Elucidation.the relation.hip between.electrode poten.ials an. heterogen.ous electrocataly.ic reaction. has attracted widespread *** we con.truct the well-defin.d Mn.sin.le-atom(Mn.A)cataly.t with four n.coordin.tion.through a simple thermal py.oly.is preparation.method to in.estigate the electrode poten.ial micro-en.iron.en.s effect on.carbon.dioxide reduction.reaction.(CO_(2)RR)an. oxy.en.reduction.reaction.(ORR).Mn.A cataly.ts gen.rate higher CO production.Faradaic efficien.y.of exceedin. 90%at-0.9 V for CO_(2)RR an. higher H_(2)O_(2)y.eld from 0.1 to 0.6 V with excellen. ORR *** fun.tion.l theory.DFT)calculation. based on.con.tan. poten.ial models were performed to study.the mechan.sm of Mn.A on.CO_(2)*** thermody.amic en.rgy.barrier of CO_(2)RR is lowest at-0.9 V *** hy.rogen.electrode(RHE).Similar DFT calculation. on.the H_(2)O_(2)y.eld of ORR showed that the H_(2)O_(2)y.eld at 0.2 V was *** study.provides a reason.ble explan.tion.for the role of electrode poten.ial micro-en.iron.en.s.

关键词： electrode poten.ial micro-en.iron.en.s Mn.sin.le-atom cataly.t carbon.dioxide reduction.reaction oxy.en.reduction.reaction con.tan. poten.ial models