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Inve.tigation of e.e.trostatically tunable.adhe.ion and instability of flying he.d slide.

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Friction 2024年第3期12卷 462-473页

作者： Fan ZHANG yu.WANG yu.qiang HU Mingquan ZHANG Baotong LI School of Me.hanical e.gine.ring Xi’an Jiaotong UniversityXi’an 710049China National e.gine.ring Re.e.rch Ce.te. for High e.ficie.cy Grinding College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China

The.inte.facial adhe.ion be.we.n microstructure. is ine.itable.in a micro-e.e.tro-me.hanical syste.(e.g.,hard disk drive.HDD)),which may le.d to complicate. microtribodynamics *** re.e.rch has inve.tigate. the.e.fe.t of surface.pote.tial on the.inte.facial adhe.ion and microtribodynamics of the.he.d–disk inte.face.HDI)in an HDD.A dynamic continuum surface.force.mode.,whe.e.the.e.e.trowe.ting is conside.e.,is propose. to e.aluate.the.inte.facial inte.action,and the. e.ploye. into a two-de.re.-of-fre.dom(2DOF)mode. to the.re.ically analyze.the.pote.tial influe.ce.me.hanism on the.*** re.ults confirm that the.e.imination of pote.tial can e.fe.tive.y re.re.s the.adhe.ion re.e.tion,which is furthe. prove. by the.me.sure. slide. re.ponse.with a lase. Dopple. vibrome.e.(LDV).More.ve.,the.e.fe.t of the.pote.tial on the.adhe.ion-induce. instability is also analyze. through the.phase.*** te.ls that the.critical stable.flying he.ght can be.lowe.e. with the.e.imination of pote.tial.

关键词： e.e.tric fie.d(e.) re.e.tion instability adhe.ion

Joine. AZ31B Magne.ium Alloys with Ag Inte.laye. by Ultrasonic-Induce. Transie.t Liquid Phase.Bonding in Air

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Acta Me.allurgica Sinica(e.glish Le.te.s) 2024年第7期37卷 1177-1185页

作者： Qian Wang Pe.g yu.Haoran Lin Chongzhi Guo Xiaoqiang Hu Ganjiang Innovation Acade.y Chinese Academy of SciencesGanzhou341119China School of Rare.e.rths University of Science and Technology of ChinaHefei230026China She.yang 7D Ne. Mate.ials e.uipme.t Co.LTD. Shenyang110076China She.yang National Laboratory of Mate.ials Scie.ce Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

AZ31B magne.ium alloys are.commonly use. in lightwe.ght structure. of automobile.and ae.ospace.*** this work,the.ultrasonic-induce. transie.t liquid phase.bonding te.hnique.is de.loye. to joint AZ31B magne.ium alloys at 490℃ with Ag inte.laye. in the.*** e.fe.t of ultrasonic vibration on microstructure.and me.hanical prope.tie. of we.ding se.m is *** vibration duration incre.se.,the.width of the.we.ding se.m incre.se. firstly and the. *** the.ultrasound vibration sustaine. for one.se.ond,the.e.te.tic re.ction occurre. in the.contacting inte.face.be.we.n Ag inte.laye. and the.base.me.al AZ31B,re.ulting in formation of liquid phase.and me.allurgical *** the.ultrasound vibration sustaine. for se.e. se.ond,the.width of the.we.ding se.m incre.se. to a maximum of about 303.1μm and the.ave.age.she.r bond stre.gth of the.we.ding joint attaine. the.pe.k value.of about 66.87 *** the.ultrasound vibration sustaine. ove. se.e. se.onds,the.liquid phase.is gradually sque.ze. out and the.width of the.we.ding se.m de.re.se..α-Mg and AgMg_(3) can be.obse.ve. in the.we.ding *** analysis shows thatα-Mg has a ce.tain stre.gthe.ing *** whole.proce.s of appe.rance.growth and inte.ration ofα-Mg is analyze..

关键词： Ultrasonic bonding Magne.ium alloy Silve. Microstructure Inte.me.allic compound

Highly e.ficie.t photo-the.mal syne.gistic catalysis of CO_(2)me.hanation ove. La1-xCe.NiO_(3)pe.ovskite.catalyst

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Nano Re.e.rch 2024年第9期17卷 7945-7956页

作者： Ting Li Zhe.-yu.Zhang De.Cun Luo Bo-yu.Xu Rong-Jiang Zhang Ji-Long Yao Dan Li Tao Xie Institute.of Industrial Catalysis School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049China

Solar-drive. photo-the.mal catalytic CO_(2)me.hanation re.ction is a promising te.hnology to alle.iate.the.proble.s pose. by gre.nhouse.gase. ***,de.igning advance. photo-the.mal catalysts re.ains a re.e.rch challe.ge.for CO_(2)me.hanation *** this work,a se.ie. of ABO3(A=lanthanide.B=transition me.al)pe.ovskite.catalysts with Ce.substitute. LaNiO3(La1-xCe.NiO3,x=0,0.2,0.5,0.8,1)we.e.synthe.ize. for CO_(2)*** La0.2Ce..8NiO3 e.hibite. the.highe.t CH4 formation rate.of 258.9 mmol·g^(-1)·hcat-1,CO_(2)conve.sion of 55.4%and 97.2%CH4 se.e.tivity at 300℃with the.light inte.sity of 2.9 W·cm^(-2).The. the.catalysts we.e.thoroughly analyze. by physicoche.ical structure.and optical prope.tie. *** partial substitution of the.A-site.provide. more.active.site. for the.adsorption and activation of CO_(2)/H_(2).The.source. of the.active.site. we.e.conside.e. to be.the.oxyge. vacancie.(Ov)cre.te. by lattice.distortions due.to diffe.e.t spe.ie. of ions(La^(3+),Ce.(4+),Ce.(3+))and e.solve. Ni0 by H_(2)*** catalysts have.e.ce.le.t light absorption absorbance.and low e.e.tron-hole.e./h+)re.ombination rate.which gre.tly contribute.to the.e.ce.le.t pe.formance.in photo-the.mal syne.gistic catalysis(PTC)CO_(2)*** re.ults of in situ irradiate. e.e.tron paramagne.ic re.onance.spe.trome.e.(ISI-e.R)and ISI-X-ray photoe.e.tron spe.troscopy(XPS)indicate. that the.aggre.ation of unpaire. e.e.trons ne.r the.de.e.ts and Ni me.al(from La and Ce.ions to Ov and Ni0)acce.e.ate. adsorption and activation of CO_(2)/H_(2).At last,the.catalyst prope.tie. and structure.we.e.corre.ate. with the.propose. re.ction me.hanism from the.in situ diffuse.re.le.tion infrare. Fourie. transform spe.trum(DRIFTS)*** in situ pre.ipitation of the.B-site.e.hance. the.dispe.sion of Ni,while.its e.riche. photoe.e.trons upon illumination furthe. promote.hydroge. *** H^(*)spillove. acce.e.ate. the.rate.de.e.mining ste.(RDS)of H

关键词： photo-the.mal catalysis CO_(2)me.hanation pe.ovskite A-site.substitution in situ diffuse.re.le.tion infrare. Fourie. transform spe.trum(DRIFTS)

Inte.re.ional Value.Adde. Tax in the.e.a of e.Comme.ce. Tax Policy De.ign Base. on Big Data from Online.Re.ailing

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Journal of Social Computing 2024年第1期5卷 46-57页

作者： yu.Che. Luwe. Xiang Hu Yang School of Public Finance.and Taxation Central University of Finance and EconomicsBeijing 100008China School of Manage.e.t and e.onomics The Chinese University of Hong KongShenzhen 518172China School of Information Central University of Finance and EconomicsBeijing 100008China

The.value.adde. tax(VAT)in China is le.ie. and allocate. base. on the.origin *** the.background of the.incre.sing substitution of online.re.ail for traditional offline.re.ail,this me.hanism will e.ace.bate.the.disparity of re.ional tax re.e.ue.and inte.sify tax compe.ition among local ***,re.onside.ing the.allocation me.hanism of value.adde. tax in China can be.an important policy de.ision,and it is influe.ce. by various e.onomic and social ***,we.utilize.large.scale.re.ail transaction data from an e.comme.ce.platform to me.sure.re.ional disparitie. in re.ail and consumption among diffe.e.t re.ions and the. re.e.ls pre.e.t tax policy re.ults in re.e.ue.imbalance.in diffe.e.t ***,we.e.tablish a mode. base. on game.the.ry to illustrate.how the.origin principle.le.ds to fie.ce.tax compe.ition among ***,by e.tablishing and solving tax allocation mode.s be.we.n local gove.nme.ts and the.ce.tral gove.nme.t,this study simulate. and calculate. the.de.re. of re.e.ue.imbalance.unde. diffe.e.t sce.arios and atte.pts to propose.policy *** re.ults indicate.that imple.e.ting the.de.tination principle.will re.uce.re.ional tax ***,adjusting the.allocation ratio be.we.n the.ce.tral gove.nme.t and local gove.nme.ts base. on city le.e.s is advantage.us for furthe. re.ucing re.ional tax re.e.ue.disparitie..

关键词： value.adde. tax e.comme.ce de.tination principle origin principle

De.e.opme.t of a scintillating-fibe.-base. be.m monitor for the.cohe.e.t muon-to-e.e.tron transition e.pe.ime.t

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Nucle.r Scie.ce.and Te.hnique. 2024年第4期35卷 156-164页

作者： yu.Xu yu.-Song Ning Zhi-Zhe. Qin Yao Te.g Chang-Qing Fe.g Jian Tang yu.Che. Yoshinori Fukao Satoshi Mihara Kou Oishi School of Physics Sun Yat-sen UniversityGuangzhou 510275China State.Ke. Laboratory of Particle.De.e.tion and e.e.tronics University of Science and Technology of ChinaHefei 230026China De.artme.t of Mode.n Physics University of Science and Technology of ChinaHefei 230026China High e.e.gy Acce.e.ator Re.e.rch Organization(Ke.) Ibaraki 305‑0801Japan De.artme.t of Physics Imperial College LondonLondon SW72AZUK

The.cohe.e.t muon-to-e.e.tron transition(COMe.)e.pe.ime.t is a le.ding e.pe.ime.t for the.cohe.e.t conve.sion of μ^(-)N→e.(-)N using a high-inte.sity pulse. muon be.mline.produce. using innovative.slow-e.traction ***,it is critical to me.sure.the.muon be.m *** se. up a muon be.m monitor(MBM),whe.e.scintillating fibe.s wove. in a cross shape.we.e.couple. to silicon photomultiplie.s to me.sure.the.spatial profile.and timing structure.of the.e.tracte. muon be.m for the.*** MBM de.e.tor was te.te. succe.sfully with a proton be.mline.at the.China Spallation Ne.tron Source.and took data with good pe.formance.in the.commissioning *** de.e.opme.t of the.MBM,including its me.hanical structure.e.e.tronic re.dout,and be.m me.sure.e.t re.ults,are.discusse..

关键词： Be.m instrume.tation Profile.monitor Scintillating fibe. Silicon photomultiplie.s

Re.e.t advance. and re.aining challe.ge. in lung cance. the.apy

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Chine.e.Me.ical Journal 2024年第5期137卷 533-546页

作者： Tasha Barr Shoubao Ma Zhixin Li Jianhua yu De.artme.t of He.atology and He.atopoie.ic Ce.l Transplantation City of Hope National Medical CenterLos AngelesCalifornia 91010USA Compre.e.sive.Cance. Ce.te. City of HopeLos AngelesCalifornia 91010USA De.artme.t of Immuno-Oncology Beckman Research InstituteLos AngelesCalifornia 91010USA

Lung cance. re.ains the.most common cause.of cance. *** the.continue. re.e.rch into ne. drugs and combination the.apie.,outcome. in lung cance. have.be.n improve.,and clinical be.e.its have.be.n e.pande. to a broade. patie.t ***,the.ove.all cure.and survival rate. for lung cance. patie.ts re.ain low,e.pe.ially in me.astatic *** the.available.lung cance. tre.tme.t options,such as surge.y,radiation the.apy,che.othe.apy,targe.e. the.apie.,and alte.native.the.apie.,immunothe.apy has shown to be.the.most *** e.pone.tial progre.s in immuno-oncology re.e.rch and re.e.t advance.e.ts made.in the.fie.d of immunothe.apy will furthe. incre.se.the.survival and quality of life.for lung cance. *** progre.s has be.n made.in targe.e. the.apie. using tyrosine.kinase.inhibitors and monoclonal antibody immune.che.kpoint inhibitors with many US Food And Drug Administration(FDA)-approve. drugs targe.ing the.programme. ce.l de.th ligand-1 prote.n(e.g.,durvalumab,ate.olizumab),the.programme. ce.l de.th-1 re.e.tor(e.g.,nivolumab,pe.brolizumab),and cytotoxic T-lymphocyte.associate. antige. 4(e.g.,tre.e.imumab,ipilimumab).Cytokine.,cance. vaccine.,adoptive.T ce.l the.apie.,and Natural kille. ce.l mono-and combinational the.apie. are.rapidly be.ng studie.,ye. to date.the.e.are.curre.tly none.that are.FDA-approve. for the.tre.tme.t of lung *** this re.ie.,we.discuss the.curre.t lung cance. the.apie. with an e.phasis on immunothe.apy,including the.challe.ge. for future.re.e.rch and clinical applications.

关键词： Lung cance. The.apy Immunothe.apy Combination the.apy Adoptive.T ce.l the.apie.

Cu,N codope. carbon nanoshe.ts e.capsulating ultrasmall Cu nanoparticle. for e.hancing se.e.tive.1,2-propane.iol oxidation

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Journal of e.e.gy Che.istry 2024年第4期91卷 27-35页

作者： Yonghai Fe.g Min yu.Minjia Me.g Le. Liu De.e. Rao Institute.for Advance. Mate.ials School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013JiangsuChina School of Che.istry and Che.ical e.gine.ring Jiangsu UniversityZhenjiang 212013JiangsuChina

In the.se.e.tive.oxidation of biomass-base. 1,2-propane.iol(PDO)with oxyge. as the.te.minal oxidant,it is challe.ging to improve.the.lactic acid(LA)se.e.tivity for nonnoble.me.al nanoparticle.(NPs)due.to the.r limite. oxyge. re.uction rate.and e.sy C-C *** the.high e.onomic fe.sibility of nonnoble.me.als,i.e.,Cu,in this work,coppe. and nitroge. codope. porous carbon nanoshe.ts e.capsulating ultrafine.Cu nanoparticle.(Cu@Cu-N-C)we.e.de.e.ope. to re.lize.highly se.e.tive.of PDO oxidation to *** carbon-e.capsulate. ultrasmall Cu^(0)NPs in Cu@Cu-N-C have.high PDO de.ydroge.ation activity while.N-coordinate. Cu(Cu-N)site. are.re.ponsible.for the.high oxyge. re.uction ***,the.pe.formance.of catalytic PDO conve.sion to LA is optimize. by a propose. pathway of PDO→hydroxylace.one.lactalde.yde.***,the.e.hance. LA se.e.tivity is 88.5%,and the.PDO conve.sion is up to 75.1%in an O_(2)-pre.surize. re.ction syste.(1.0 MPa O_(2)),supe.ior to othe. Cu-base. catalysts,while.in a milde. nonpre.surize. syste.(O_(2)flow rate.of 100 mL min-1),a re.arkable.LA se.e.tivity(94.2%)is obtaine. with 39.8%PDO conve.sion,2.2 time. highe. than that of supporte. Au nanoparticle.(1%Au/C).More.ve.,carbon e.capsulation offe.s Cu@Cu-N-C with strong le.ching re.istance.for be.te. re.ycling.

关键词： Se.e.tive.oxidation Coppe. and nitroge. dope. carbon 1,2-Propane.iol Ultrasmall Cu nanoparticle. Lactic acid

De.e.t-mode.and Fabry-Pe.ot re.onance.induce. multi-band nonre.iprocal the.mal radiation

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Scie.ce.China(Te.hnological Scie.ce.) 2024年第8期67卷 2405-2412页

作者： CHe. ZiHe.yu.ShiLv yu.N Che.g CUI XinYou HU Run School of e.e.gy and Powe. e.gine.ring Huazhong University of Science and TechnologyWuhan 430074China Wuhan Fibe.home.Fuhua e.e.tric Co. Ltd.Wuhan 430074China

According to Kirchhoff's radiation law,the.spe.tral-dire.tional absorptivity(α)and spe.tral-dire.tional e.issivity(e.of an obje.t are.wide.y be.ie.e. to be.ide.tical,which place. a fundame.tal limit on photonic e.e.gy conve.sion and *** introduction of We.l se.ime.als and magne.o-optical(MO)mate.ials into photonic crystals make. it possible.to violate.Kirchhoff's law,but most e.isting work only re.ort the.une.ual absorptivity and e.issivity spe.tra in a single.band,which cannot me.t the.re.uire.e.ts of most practical ***,we.introduce.a de.e.t laye. into the.structure.compose. of one.dime.sional(1D)magne.ophotonic crystal and a me.al laye.,which re.lize. dual-band nonre.iprocal the.mal radiation unde. a 3-T magne.ic fie.d with an incide.t angle.of 60°.The.re.lization of dual-band nonre.iprocal radiation is mainly due.to the.Fabry-Pe.ot(FP)re.onance.occurring in the.de.e.t laye. and the.e.citation of Tamm plasmon,which is prove. by calculating the.magne.ic fie.d *** addition,the.e.fe.ts of incide.t angle.and structural parame.e.s on nonre.iprocity are.also *** is more.the.numbe. of nonre.iprocal bands could be.furthe. incre.se. by tuning the.de.e.t laye. *** the.de.e.t laye. thickne.s incre.se. to 18.2μm,tri-band nonre.iprocal the.mal radiation is re.lize. due.to the.e.hance. numbe. of de.e.t mode. in the.photonic band gap and the.FP re.onance.occurring in the.de.e.t ***,the.e.fe.t of de.e.t location on nonre.iprocity is also *** pre.e.t work provide. a ne. way for the.de.ign of multi-band or e.e. broad-band nonre.iprocal the.mal e.itte.s.

关键词： Kirchhoff's law multi-band nonre.iprocal the.mal radiation magne.ophotonic crystal Tamm plasmon de.e.t laye. Fabry-Pe.ot re.onance

De.e.tralize. Primary Fre.ue.cy Re.ulation for Hybrid Multi-te.minal Dire.t Curre.t Powe. Syste.s Conside.ing Multi-source.e.hance.e.t

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Journal of Mode.n Powe. Syste.s and Cle.n e.e.gy 2024年第3期12卷 958-970页

作者： Jialiang Wu Zhe. Wang Ruixu Liu yu.Shan Che.xuan Wang the.Colle.e.of e.e.trical e.gine.ring Zhejiang UniversityHangzhou 310027China the.e.onomic Re.e.rch Institute.of State.Grid Zhe.iang e.e.tric Powe. Co. Ltd.Hangzhou 310016China

Hybrid multi-te.minal dire.t curre.t(MTDC)transmission te.hnology has be.n a re.e.rch focus,and primary fre.ue.cy re.ulation(FR)improve.e.t in the.re.e.ving-e.d syste. is one.of the.proble.s to be.*** pape. pre.e.ts a de.e.tralize. primary FR sche.e.for hybrid MTDC powe. syste.s conside.ing multi-source.e.hance.e.t to he.p suppre.s fre.ue.cy disturbance.in the.re.e.ving-e.d *** the.conve.te.s only ne.d local fre.ue.cy or DC voltage.signal input to re.pond to syste. disturbance.without communication or a control ce.te.,i.e.,a de.e.tralize. control *** propose. sche.e.can activate.appropriate.powe. source. to assist in FR in various syste. disturbance.se.e.itie. with fine.de.igne. thre.holds,e.suring sufficie.t utilization of e.ch powe. *** be.te. balance.FR pe.formance.and FR re.ource.participation,an e.aluation inde. is propose. and the.parame.e. optimization proble. is furthe. ***,the.validity of the.propose. sche.e.is ve.ifie. by simulations in MATLAB/Simulink.

关键词： De.e.tralize. control sche.e primary fre.ue.cy re.ulation(FR) rate.of change.of fre.ue.cy(ROCOF) syste. fre.ue.cy disturbance