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Relat.onship bet.een seismic st.uct.res and t.e diverse rupt.re processes of t.e 2023 t.rkiye eart.quake doublet

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Science China Eart. Sciences 2024年第9期67卷 2810-2823页

作者： Zhi WANG Yi FU Shunping pei CAS Key Laborat.ry of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Sout.ern Marine Science and Engineering Guangdong Laborat.ry(Guangzhou) Guangzhou 511458China Key Laborat.ry of t.bet.n Plat.au Eart. Syst.m Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Universit. of Chinese Academy of Sciences Beijing 100049China

Recent.geodet.c and seismological observat.ons of t.o major eart.quakes in sout.east.rn t.rkiye in February 2023 have revealed complex rupt.re init.at.on,propagat.on,and segment.t.on along t.e East.Anat.lian Fault.Zone(EAFZ)and surrounding ***,t.e role of upper crust.st.uct.res along t.e EAFZ in det.rmining t.e diverse rupt.re processes of t.is eart.quake doublet.remains *** furt.er invest.gat. t.is,we employed double-difference locat.on and seismic t.mography t.chniques t. det.rmine high-resolut.on seismic velocit.es(V_(P),V_(S))and Poisson’s rat.o(σ)st.uct.res using a mult.paramet.r joint.t.mographic *** dat.set.includes 100,833 high-qualit. source-receiver t.avel-t.me pairs of P-and *** find t.at.t.e unique rupt.re processes of t.is eart.quake doublet.were primarily influenced by cont.ast.ng crust.l seismic st.uct.res and localized geological *** M_(w)7.8 mainshock was init.at.d wit.in a t.ansit.onal edge zone charact.rized by a rigid part.asperit.)of t.e seismogenic zone wit. sharp cont.ast.variat.ons in rock st.engt. ranging from low t. high along t.e *** comparison,t.e M_(w)7.6 rupt.re originat.d in a duct.le belt.feat.ring fluid sat.rat.on wit. low-VP,low-VS,and high-σvalues t.at.ext.nded parallel t. t.e Cardak *** pronounced cont.ast.st.uct.res observed along t.e former rupt.re can be at.ribut.d t. t.e oblique collision syst.m bet.een t.e weakened sect.on of t.e east.Anat.lian plat.au and t.e brit.le Arabian plat.orm,while t.e lat.er rupt.re was init.at.d wit.in t.e duct.le st.uct.re associat.d wit. fluid int.usion caused by t.e nort.ward subduct.on of t.e Cyprus slab and subsequent.***,t.e occurrence of t.e first.eart.quake(E1)serves t. alleviat. shear st.ess on t.e second eart.quake(E2)fault.pot.nt.ally impeding t.e init.at.on of an E2 *** t.e cont.ary,t.is event.also significant.y reduces t.e normal st.ess act.ng on t.e E2 fault.due t. a double left.lat.ral st.ike-slip syst.m

关键词： 2023 t.rkiye eart.quake doublet Joint.seismic t.mography t.mographic t.ansit.on edge Seismic rupt.re process St.ong fault.coupling

Performance analysis of a phot.volt.ic/t.ermal syst.m wit. lunar regolit.-based t.ermal st.rage for t.e lunar base

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Science China(t.chnological Sciences) 2024年第4期67卷 1113-1123页

作者： SUN WenGan ZHAO Bin pei Yu SHI LingFeng HU MaoBin LI MuJun REN Xiao pei Gang Deep Space Explorat.on Laborat.ry Hefei 230026China Depart.ent.of t.ermal Science and Energy Engineering University of Science and Technology of ChinaHefei 230026China Depart.ent.of Mechanical and Aerospace Engineering University of California San DiegoLa JollaCA 92093USA Depart.ent.of Precision Machinery and Precision Inst.ument.t.on University of Science and Technology of ChinaHefei 230026China College of New Energy China University of Petroleum(East China)Qingdao 266000China

Powering a moon base,especially keeping it.warm during t.e long lunar night.is a big *** paper int.oduces a phot.volt.ic/t.ermal(PV/t.syst.m incorporat.ng regolit. t.ermal st.rage t. solve t.e challenge of power and heat.provision for t.e lunar base *** vacuum of space around t.e moon helps t.is syst.m by reducing heat.*** t.e moon's dayt.me,t.e syst.m not.only generat.s elect.icit. but.also capt.res *** st.red heat.in t.e regolit. is t.en used at.night.reducing t.e amount.of equipment.we need t. send from *** spect.ally select.ve PV/t.panels are designed t. absorb a wide range of sunlight.0.3–2.5μm)while minimizing heat.loss in t.e infrared range(3–30μm).Simulat.on result. of t.e hybrid solar energy syst.m indicat. t.e average value of t.e overall efficiency is 45.9%,which relat.vely elevat.s 56.1%compared t. t.e PV *** launch mass of t.e proposed PV/t.syst.m is only 8.4%of a t.adit.onal phot.volt.ic-lit.ium bat.ery syst.m wit. t.e same amount.of energy *** t.e t.t.l specific energy of t.e proposed syst.m is 7.3 kWh kg^(-1),while t.at.of t.e phot.volt.ic-lit.ium bat.ery syst.m is about.0.3 kWh kg^(-1).In summary,t.is st.dy proposes an alt.rnat.ve combined heat.and elect.icit. supply syst.m for t.e lunar base,which can great.y reduce t.e launch mass and free up load for ot.er scient.fic research equipment.

关键词： in-sit. resource ut.lizat.on(IRSU) regolit. t.ermal st.rage phot.volt.ic/t.ermal(PV/t. spect.al select.vit.

Cryst.l st.uct.re,phase t.ansit.ons,and t.ermodynamic propert.es of magnesium met.vanadat.(MgV_(2)O_(6))

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Journal of Magnesium and Alloys 2024年第4期12卷 1449-1460页

作者： Guishang pei Cheng Pan Dapeng Zhong Junyi Xiang Xuewei Lv College of Mat.rials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laborat.ry of Vanadium-t.t.nium Met.llurgy and Advanced Mat.rials Chongqing UniversityChongqing 400044China Pangang Group Research Inst.t.t. Co. Ltd.Panzhihua 617000China

As a promising anode mat.rial for magnesium ion rechargeable bat.eries,magnesium met.vanadat.(MgV_(2)O_(6))has at.ract.d considerable research int.rest.in recent.years.A MgV_(2)O_(6)sample was synt.esized via a facile solid-st.t. react.on by mult.st.p-firing st.ichiomet.ic mixt.res of MgO and V2O5 powder under an air *** solid-st.t. phase t.ansit.on fromα-MgV_(2)O_(6)t.β-MgV_(2)O_(6)occurred at.841 K and t.e ent.alpy change was 4.37±0.04 kJ/*** endot.ermic effect.at.1014 K and t.e ent.alpy change was 26.54±0.26 kJ/mol,which is relat.d t. t.e incongruent.melt.ng ofβ-MgV_(2)O_(6).In sit. XRD was performed t. invest.gat. phase t.ansit.on of t.e as-prepared MgV_(2)O_(6)at.high *** cell paramet.rs obt.ined by Riet.eld refinement.indicat.d t.at.it.cryst.llizes in a monoclinic syst.m wit. t.e C2/m space group,and t.e lat.ice paramet.rs of a=9.280 A°,b=3.501 A°,c=6.731 A°,β=111.76°.t.e solid-st.t. phase t.ansit.on fromα-MgV_(2)O_(6)t.β-MgV_(2)O_(6)was furt.er st.died by t.ermal kinet.cs,indicat.ng t.at.t.is process is cont.olled first.by a fibril-like mechanism and t.en by a spherulit.c-t.pe mechanism wit. an increasing heat.ng ***,t.e ent.alpy change of MgV_(2)O_(6)at.high t.mperat.res was measured ut.lizing t.e drop calorimet.y,heat.capacit. was calculat.d and given as:Cp=208.3+0.03583t.4809000t.(−2)(298-923 K)(J mol^(−1)K^(−1)),t.e high-t.mperat.re heat.capacit. can be used t. calculat. Gibbs free energy of MgV_(2)O_(6)at.high t.mperat.res.

关键词： MgV_(2)O_(6) Cryst.l st.uct.re Phase t.ansit.ons t.ermodynamic funct.ons

Molecular Dynamics Simulat.on St.dies on t.e Micromorphology and Prot.n t.ansport.of Nafion/t._(3)C_(2)t.(x) Composit. Membrane

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Chinese Journal of Polymer Science 2024年第3期42卷 373-387,I0009页

作者： Zhi-Yue Han Su-Peng pei Chun-Yang Yu Yong-Feng Zhou School of Chemical and Environment.l Engineering Shanghai Institute of TechnologyShanghai 201418China School of Chemist.y&Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China Key Laborat.ry of Green and High-end Ut.lizat.on of Salt.Lake Resources Chinese Academy of SciencesXining 810008China

t.e perfluorosulfonic acid(PFSA) membrane doped wit. t.o-dimensional conduct.ve filler t._(3)C_(2)t.(x) is a fuel cell prot.n exchange membrane wit. high applicat.on pot.nt.al. Experiment.l st.dies showed t.at.t.e prot.n conduct.vit. of Nafion/t._(3)C_(2)t.(x) composit. membrane is improved significant.y compared wit. t.at.in pure Nafion. However, t.e microscopic mechanism of doping on t.e enhancement.of membrane performance is remain unclear now. In t.is work, molecular dynamics simulat.on was used t. invest.gat. t.e microscopic morphology and prot.n t.ansport.behaviors of Nafion/t._(3)C_(2)t.(x) composit. membrane at.t.e molecular level. t.e result. shown t.at.t.ere were significant.differences about.t.e diffusion kinet.cs of wat.r molecules and hydroxium ions in Nafion/t._(3)C_(2)t.(x) at.low and high hydrat.on levels in t.e nanoscale *** t.e increase of wat.r cont.nt. t._(3)C_(2)t.(x) in membrane was gradually surrounded by ambient.wat.r molecules t. form a hydrat.on layer, and forming a relat.vely cont.nuous prot.n t.ansport.channel bet.een Nafion polymer and t._(3)C_(2)t.(x) monomer. t.e cont.nuous prot.n t.ansport.channel could increase t.e number of binding sit.s of prot.n and t.us achieving high prot.n conduct.vit. and high mobilit. of wat.r molecules at.higher hydrat.on level. t.e current.work can provide a t.eoret.cal guidance for designing new t.pe of Nafion composit. membranes.

关键词： Nafion/t._(3)C_(2)t.(x)composit. membrane Prot.n t.ansport Molecular dynamics simulat.on

Close-packed layer spacing as a pract.cal guideline for st.uct.re symmet.y manipulat.on of IV-VI/I-V-VI_(2) t.ermoelect.ics

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InfoMat 2024年第2期6卷 99-106页

作者： t.o Jin Long Yang Xinyue Zhang Wen Li Yanzhong pei Int.rdisciplinary Mat.rials Research Cent.r School of Materials Science and EngineeringTongji UniversityShanghaithe People's Republic of China

t.e cryst.l-st.uct.re symmet.y in real space can be inherit.d in t.e reciprocal space,making high-symmet.y mat.rials t.e t.p candidat.s for t.ermoelect.ics due t. t.eir pot.nt.al for significant.elect.onic band degeneracy.A pract.cal indicat.r t.at.can quant.t.t.vely describe st.uct.ral changes would help facilit.t. t.e advanced t.ermoelect.ic mat.rial *** face-cent.red cubic st.uct.res,t.e spat.al environment.of t.e same cryst.llographic plane family is isot.opic,such t.at.t.e dist.nces bet.een t.e close-packed layers can be derived from t.e at.mic dist.nces wit.in t.e *** by t.is,t.e relat.onship bet.een int.r-and int.a-layer geomet.ic informat.on can be used t. compare cryst.l st.uct.res wit. t.eir desired cubic *** close-packed layer spacing was found t. be a pract.cal guideline of cryst.l st.uct.re symmet.y in IV-VI chalcogenides and I-V-VI_(2) t.rnary semiconduct.rs,bot. of which are hist.rically import.nt.*** cont.nuous st.uct.ral evolut.on t.ward high symmet.y can be described by t.e layer spacing when t.mperat.re or/and composit.on change,which is demonst.at.d by a series of prist.ne and alloyed t.ermoelect.ic mat.rials in t.is *** layerspacing-based guideline provides a quant.t.t.ve pat.way for manipulat.ng cryst.l st.uct.res t. improve t.e elect.ical and t.ermal propert.es of t.ermoelect.ic mat.rials.

关键词： phase t.ansit.on st.uct.re manipulat.on t.ermoelect.ic mat.rials x-ray diffract.on

High densit. dislocat.ons enhance creep ageing response and mechanical propert.es in 2195 alloy sheet

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Journal of Cent.al Sout. Universit. 2024年第7期31卷 2194-2209页

作者： WEI Shuo MA pei-pei CHEN Long-hui YANG Jian-shi ZHAN Li-hua LIU Chun-hui Light.Alloy Research Inst.t.t. Central South UniversityChangsha 410083China St.t. Key Laborat.ry of Precision Manufact.ring for Ext.eme Service Performance Central South UniversityChangsha 410083China School of Mechanical and Elect.ical Engineering Central South UniversityChangsha 410083China Advancd Research Cent.r Central South UniversityChangsha 410083China Light Alloy Research

t.e creep st.ain of convent.onally t.eat.d 2195 alloy is very low,increasing t.e difficult. of manufact.ring Al-Cu-Li alloy sheet.part. by creep age ***,finding a solut.on t. improve t.e creep formabilit. of Al-Cu-Li alloy is vit.l.A t.orough comparison of t.e effect. of cryo-deformat.on and ambient.t.mperat.re large pre-deformat.on(LPD)on t.e creep ageing response in t.e 2195 alloy sheet.at.160℃wit. different.st.esses has been *** evolut.on of dislocat.ons and precipit.t.s during creep ageing of LPD alloys are revealed by X-ray diffract.on and t.ansmission elect.on ***-qualit. 2195 alloy sheet.largely pre-deformed by 80%wit.out.edge-cracking is obt.ined by cryo-rolling at.liquid nit.ogen t.mperat.re,while severe edge-cracking occurs during room t.mperat.re *** creep formabilit. and st.engt. of t.e 2195 alloy are bot. enhanced by int.oducing pre-exist.ng dislocat.ons wit. a densit. over 1.4×10^(15)m^(−2).At.160℃and 150 MPa,creep st.ain and creep-aged st.engt. generally increases by 4−6 t.mes and 30−50 MPa in t.e LPD sample,respect.vely,compared t. convent.onal t. alloy *** elongat.on of creep-aged LPD sample is low but.remains relevant.for *** high-densit. dislocat.ons,t.ough exist.ng in t.e form of dislocat.on t.ngles,promot. t.e format.on of refined t. precipit.t.s wit. a uniform dispersion.

关键词： creep ageing Al-Cu-Li alloy high dislocat.on densit. cryogenic rolling dislocat.on st.engt.ening

Bimet.llic CoNi single at.ms support.d on t.ree-dimensionally ordered mesoporous chromia: highly act.ve cat.lyst. for n-hexane combust.on

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Green Energy & Environment 2024年第7期9卷 1122-1137页

作者： Xiuqing Hao Yuxi Liu Jiguang Deng Lin Jing Jia Wang Wenbo pei Hongxing Dai Beijing Key Laborat.ry for Green Cat.lysis and Separat.on Key Laboratory of Beijing on Regional Air Pollution Control Key Laboratory of Advanced Functional Materials Education Ministry of China Laboratory of Catalysis Chemistry and Nanoscience Department of Chemical Engineering Faculty of Environment and Life Beijing University of Technology

Developing t.e alt.rnat.ve support.d noble met.l cat.lyst. wit. low cost.high cat.lyt.c efficiency,and good resist.nce t.ward carbon dioxide and wat.r vapor is crit.cally demanded for t.e oxidat.ve removal of volat.le organic compounds （VOCs）.In t.is work,we prepared t.e mesoporous chromia-support.d bimet.llic Co and Ni single-at.m （Co1Ni1/meso-Cr2O3） and bimet.llic Co and Ni nanopart.cle (CoNPNiNP/mesoCr2O3) cat.lyst. adopt.ng t.e one-pot.polyvinyl pyrrolidone （PVP）-and polyvinyl alcohol （PVA）-prot.ct.ng approaches,*** result. indicat. t.at.t.e Co1Ni1/meso-Cr2O3cat.lyst.exhibit.d t.e best.cat.lyt.c act.vit. for n-hexane (C6H14) combust.on (t.0%and t.0%were 239 and 263℃ at.a space velocit. of 40,000 mL g-1h-1;apparent.act.vat.on energy and specific react.on rat. at.260℃ were 54.7 kJ mol-1and 4.3×10-7mol g-1cat.-1,respect.vely),which was associat.d wit. it. higher (Cr5++Cr6+) amount.large n-hexane adsorpt.on capacit.,and good lat.ice oxygen mobilit. t.at.could enhance t.e deep oxidat.on of n-hexane,in which Ni1was beneficial for t.e enhancement. in surface lat.ice oxygen mobilit. and low-t.mperat.re reducibilit.,while Co1preferred t. generat. higher cont.nt. of t.e high-valence st.t.s of chromium and surface oxygen species as well as adsorpt.on and act.vat.on of n-hexane.n-Hexane combust.on t.kes place via t.e Mars van Krevelen（MvK） mechanism,and it. react.on pat.ways are as follows:n-hexane→olefins or 3-hexyl hydroperoxide→3-hexanone,2-hexanone or 2,5-dimet.ylt.t.ahydrofuran→2-met.yloxirane or 2-et.yl-oxet.ne→acrylic acid→COx→CO2and H2O.

关键词： t.ree-dimensional ordered mesoporous chromium oxide Support.d bimet.llic single-at.m cat.lyst Cobalt.nickel single at.ms n -Hexane combust.on Cat.lyt.c react.on mechanism

Enhanced mechanical propert. by int.oducing bimodal grains st.uct.res in Cu-t. alloys fabricat.d by mechanical alloying

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Journal of Mat.rials Science & t.chnology 2024年第5期172卷 104-112页

作者： Ningyu Li Yongqin Chang Mingyang Li Yuxiang Chen Xinrui Luo Shichao pei Fan Yang School of Mat.rials Science and Engineering University of Science and Technology BeijingBeijing 100083China Xi’an Rare Met.l Mat.rials Inst.t.t. Co.Lt. Xi’an 710016China

Dispersion-st.engt.ened copper alloys can achieve ult.a-high st.engt.,but.usually at.t.e expense of *** t.is st.dy,a st.at.gy for overcoming st.engt.-duct.lit. t.adeoffof Cu alloys is realized t.rough t.e int.oduct.on of bimodal grains ***-t. alloys wit. only 0.5 at.%t. cont.nt.were successfully prepared by mechanical alloying combined wit. spark plasm *** samples prepared by one-st.p and t.o-st.p ball milling met.ods are named as Cu-t.(Ⅰ)and Cu-t.(Ⅱ),*** microst.uct.ral charact.rizat.ons revealed t.at.ult.a-fine equiaxed grains wit. uniformly dispersed t. precipit.t.s were obt.ined in t.e Cu-t. *** st.engt. of 377 MPa for yield st.engt. t.get.er wit. elongat.on of∼8%was obt.ined in Cu-t.(Ⅰ).Bimodal grains st.uct.res composed of fine-grain zones and coarse-grain zones were successfully int.oduced int. Cu-t.(Ⅱ)by a t.o-st.p ball milling approach,and bot. yield st.engt.(463 MPa)and elongat.on(∼15%)were significant.y synergist.c *** hardness values of bot. Cu-t.(Ⅰ)and Cu-t.(Ⅱ)were almost.kept.nearly const.nt.wit. t.e increase of annealing t.me,and t.e soft.ning t.mperat.res of Cu-t.(Ⅰ)and Cu-t.(Ⅱ)are 1018 and 1013℃,reaching 93.9%and 93.5%t.m of pure Cu(1083℃),*** reveals t.at.t.e Cu-0.5 at.%t. alloys exhibit.excellent.t.ermal st.bilit. and except.onal soft.ning *** nanoclust.rs wit. semi-coherent.st.uct.res play an essent.al role in enhancing t.e st.engt. and microst.uct.ral st.bilit. of *** st.uct.res are beneficial t. t.e act.vat.on of back st.ess st.engt.ening and t.e init.at.on and propagat.on of microcracks,t.us obt.ining t.e ext.aordinary combinat.on of st.engt. and *** st.dy provides a new way t. fabricat. dispersion-st.engt.ened Cu alloys wit. high st.engt.,high elongat.on,excellent.t.ermal st.bilit. and soft.ning resist.nce,which have pot.nt.al applicat.on value in t.e field of t.e fut.re fusion react.r.

关键词： Cu-t. alloy Mechanical alloying t. precipit.t.s Bimodal st.uct.res Mechanical propert.

Hybridizat.on-mediat.d quasipart.cle and phonon dynamics in single cryst.l cerium films

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Science China(Physics,Mechanics & Ast.onomy) 2024年第4期67卷 146-153页

作者： Yunhe pei Yi Wu Kai Hu Zhengxing Wei YiFeng Yang Yang Liu Jingbo Qi St.t. Key Laborat.ry of Elect.onic t.in Films and Int.grat.d Devices University of Electronic Science and Technology of ChinaChengdu 611731China Cent.r for Correlat.d Mat.er and Depart.ent.of Physics Zhejiang UniversityHangzhou 310058China Beijing Nat.onal Laborat.ry for Condensed Mat.er Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Universit. of Chinese Academy of Sciences Beijing 100049China Songshan Lake Mat.rials Laborat.ry Dongguan 523808China Collaborat.ve Innovat.on Cent.r of Advanced Microst.uct.res Nanjing UniversityNanjing 210093China

We report.t.e ult.afast.opt.cal pump-probe spect.oscopy measurement. on t.e single-cryst.l cerium *** experiment.l result. of t.mperat.re-dependent.quasipart.cle dynamics reveal development.of t.e hybridizat.on bet.een localized f moment. and conduct.on elect.ons,i.e.,evolving from fluct.at.ng hybridizat.on t. collect.ve *** phonon renormalizat.on is discovered t. appear at.t.e emerging t.mperat.re(t.(+))of fluct.at.ng hybridizat.on apart.from it. known presence at.t.e coherent.t.mperat.re(t.(*)),and can hardly be explained by t.e mean-field *** quasipart.cle relaxat.on at.high t.mperat.res indicat.s coexist.nce of nont.ermal elect.on-elect.on scat.ering and inelast.c Kondo scat.ering,while it. behavior at.low t.mperat.res suggest. onset.ofαphase in t.eγ-phase dominat.d *** also ext.act.t.e indirect.gap below t.(*),represent.ng t.e appearance of collect.ve *** findings provide novel informat.on about.t.e hybridizat.on and phase evolut.on in t.e heavy fermion syst.ms.

关键词： cerium quasipart.cle dynamics hybridizat.on phonon renormalizat.on