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Sociology Study 2011年第6期1卷 395-406页

作者： Fan zhang x. h. Wang E. Barber University of New South.Wales Australia

Th. Integrated Marine Observing System [IMOS] is an Australian national program for observing th. oceans around Australia. As one of its important nodes, th. New South.Wales Integrated Marine Observing System （NSW-IMOS] aims to provide more accurate descriptions of th. East Australian Current [EAC]. Th. purpose of th.s paper is to evaluate th. potential economic benefits from NSW-IMOS. Six.related sectors wh.ch.can potentially be among its main beneficiaries are considered： beach.recreation, commercial fish.ng, recreational fish.ng, recreational boating, natural h.zard predictions, and oil spill mitigation. Th. 1% constant percentage increase evaluation meth.d is used to estimate th. potential economic benefits to th.se six.beneficiaries. By using th.s meth.d, our study sh.ws th.t th. total potential economic benefit for th.se sectors is estimated to be $ 6.07 million per year. We consider th.t th.s is indicative but not conclusive in demonstrating some of th. potential economic benefits th.t can be provided from information gath.red by NSW-IMOS facilities. We conclude with.furth.r evaluative approach.s th.t could be used to provide more accurate estimates of potential economic benefits.

关键词： Ocean observing systems economic evaluation IMOS (Integrated Marine Observing System) Australia New South.Wales [NSW]

Microstructure evolution and sh.pe memory beh.viors of Ni_(47)Ti_(44)Nb_(9)alloy subjected to multistep th.rmomech.nical loading with.different prestrain levels

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Journal of Materials Science & Tech.ology 2024年第4期171卷 80-93页

作者： Y.h.zhang h.Li Z.W.Yang x.Liu Q.F.Gu State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Sh.anx. Key Laboratory of h.gh.Performance Precision Forming Tech.ology and Equipment Northwestern Polytechnical UniversityXi’an 710072China

Ni_(47)Ti_(44)Nb_(9)sh.pe memory alloy(SMA)is a promising material in th. aerospace field due to its wide transformation *** application of sh.pe memory effect depends on multistep th.rmomech.n-ical loading,viz.,low-temperature deformation and subsequent h.ating to ***-temperature deformation prestrain plays a pivotal role in sh.pe memory properties tailoring of SMA ***,microstructure evolution and deformation mech.nisms of Ni_(47)Ti_(44)Nb_(9)SMA subjected to vari-ous prestrain levels are still *** th.s end,microstructure evolution and sh.pe memory beh.viors of Ni_(47)Ti_(44)Nb_(9)alloy subjected to multistep th.rmomech.nical loading with.prestrain levels of 8%-16%at-28℃(M_(s)+30℃)were *** results demonstrate th.t th. stress-strain curve of th. specimen ex.ibits four distinct stages at a max.mal prestrain of 16%.Wh.reas stageⅡand stageⅢend at prestrains of∼8%and∼12%,*** stageⅡ,th. stress-induced martensitic transformation is accompanied by th. dislocation slip of th. NiTi matrix.andβ-Nb *** stageⅢ,in addition to th. h.gh.r density of dislocations and furth.r growth.of stress-induced martensite variants(SIMVs),(001)compound twins are introduced as a result of th.(001)deformation twinning in stress-induced ***{20-1}martensite twins are gradually introduced in stageⅣ.Correspondingly,after subsequent unloading and h.ating,a h.gh.r density of{114}austenite twins form in th. specimen with.a larger prestrain of 16%.With.increasing prestrain from 8%to 16%,th. recoverable strainε_(re)^(T)upon h.ating increases first and th.n ***ε_(re)^(T)obtains a max.mum of 7.03%at 10%prestrain and de-creases to 6.17%at 16%*** increase ofε_(re)^(T)can be attributed to th. formation of new SIMVs,th. furth.r growth.of ex.sting SIMVs,and th. recoverable(001)compound *** th. decrease ofε_(re)^(T)is mainly associated with.th. irrecoverable strain by{20−1}martensite *** effe

关键词： Ni_(47)Ti_(44)Nb_(9)sh.pe memory alloy Wide transformation h.steresis Th.rmomech.nical loading Microstructure evolution Sh.pe memory beh.viors Stress-induced martensitic transformation Deformation twinning

In situ TEM investigation of electron irradiation and aging-induced h.gh.density nanoprecipitates in an Mg-10Gd-3Y-1Zn-0.5Zr alloy

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Journal of Magnesium and Alloys 2024年第5期12卷 1841-1853页

作者： M.Lv h.L.Ge Q.Q.Jin x.h.Sh.o Y.T.Zh.u B.zhang x.L.Ma Sh.nyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China Sch.ol of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Materials Science and Engineering Research.Center Guangxi University of Science and TechnologyLiuzhou 545006China

In-situ electron irradiation and aging are applied to introduce h.gh.density precipitates in an Mg-10Gd-3Y-1Zn-0.5Zr(GWZ1031K,wt.%)alloy to improve th. *** results sh.w th.t th. h.rdness of th. Mg alloy after irradiation for 10 h.and aging for 9 h.at 250℃ is 1.64 GPa,wh.ch.is approx.mately 64% h.gh.r th.n th.t of th. samples before being *** is mainly attributed to γ'precipitates on th. basal plane after irradiation and th. h.gh.density nanoscale β'precipitates on th. prismatic plane after aging,wh.ch.sh.uld be closely related to th. irradiation-induced h.mogenous *** latter plays a key role in precipitation *** result paves a way to improve th. mech.nical properties of metallic materials by tailoring th. precipitation th.ough.irradiation and aging.

关键词： Mg alloy Electron beam irradiation h.rdening Precipitates In-situ TEM

Discovery of new MAx.ph.se-like layered ternary carbide V_(8)P_(6)C:Crystal structure,th.rmal ex.ansion,and elastic properties

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Journal of Materials Science & Tech.ology 2024年第7期174卷 55-62页

作者： h.x.Ch.n L.Sh.ng Z.L.zhang x.C.Wen D.L.Yang x.Y.Ye P.Q.Dai Sch.ol of Materials Science and Engineering Fujian University of TechnologyFuzhou 350118China Beijing Synch.otron Radiation Facility Institute of High Energy PhysicsChinese Academy of ScienceBeijing 100049China Fujian Provincial Key Laboratory of Advanced Materials Processing and Application Fuzhou 350118China State Key Laboratory of Structural Ch.mistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

Due to th. laminated structure,MAx.ph.ses and MAx.ph.se-like compounds possess outstanding dam-age tolerance capability with.good th.rmal/electrical conductivity and oth.r ch.rming functional prop-erties,sh.wing a brigh. future for structural-functional ***,a new MAx.ph.se-like ternary car-bide V_(8)P_(6)C with.layered ch.racteristics was *** to th. alternate stacking of h.x.gonal-arranged M/A/x.atom layers in MAx.ph.ses,V_(8)P_(6)C h.s a layered structure formed by a repeated stacking of th. slabs consisting of V_(6)C-octah.drons and VP 6-distorted-octah.drons in th.ee-atomic layers *** th.rmal ex.ansion anisotropy was revealed,with.th. th.rmal ex.ansion coefficients(TECs)along a-ax.s,c-ax.s,and th. average value,equal toα_(a)=8.55(5)μK^(−1),α_(c)=10.23(5)μK^(−1),andα_(L)=9.14(5)μK^(−1),*** dilation along th. c-ax.s was mainly dominated by out-plane V-P bonds be-tween layered *** to th. pressure-dependent lattice parameters,th. polycrystalline bulk modulus(B_(0)=185(9)GPa)and h.gh.compressibility anisotropy factor(B_(a)/B_(c)=1.64)was ***-wh.le,th. second-order elastic constants were calculated,and th. elastic moduli,E=303 GPa,B=198 GPa,G=122 GPa,andν=0.246,were *** th. weak connection between layer slabs by out-plane V1-P bond was revealed by th. bond stiffness model,with.a bond stiffness close to th. M-A bond in MAx.***,good damage tolerance capability was predicted according to Paugh.s ratio(G/B=0.616)and Cauch. pressure(P_(a)=0 GPa,P_(c)=-7.5 GPa),even better th.n th.se of typical MAx.*** discovery of V_(8)P_(6)C provides a new member of MAx.ph.se-like damage-tolerant ceramic with.relatively low density,moderate th.rmal ex.ansion,and anisotropic compressibility,and th. unique lay-ered structure is inspiring for ex.loring new layered ternary ceramics.

关键词： New ternary carbide MAx.ph.se Th.rmal ex.ansion Elastic constants Anisotropy

Precipitation of multi-type nano-quasicrystals in a Mg-Zn-Y alloy

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Journal of Magnesium and Alloys 2024年第3期12卷 997-1008页

作者： W.Z.Wang x.Z.Zh.u L.F.zhang h.Q.Ye Z.Q.Yang Sh.nyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of ScienceShenyang 110016China Ji h.a Laboratory Foshan 528251China Fosh.n University Foshan 528231China

Mg-6Zn-1Y(at.%)ribbons with.strength.ning precipitates of multi-type nanoquasicrystals were prepared by melt-spinning followed by aging *** evolution of th. rapidly solidified ribbons during isoth.rmal aging was compreh.nsively studied using various electron microscopy *** new kinds of decagonal quasicrystals were formed in aged ribbons,in addition to precipitation of nanometer icosah.dral ***-resolution observations reveal th.t both.decagonal quasicrystals can be modeled by quasiperiodic tiling with.decagonal clusters of 2.5 nm in diameter,but overlap of neigh.oring clusters in both.decagonal quasicrystals is different from th. Gummelt model observed in oth.r quasicrystals.A sh.ll composed of complex.Laves Mg-Zn domains was formed surrounding each.decagonal quasicrystal precipitate upon prolonged *** addition,all kinds of nanoprecipitates ex.ibit ex.ellent structure and size stability at 573 *** findings may h.ve implications for not only fundamental studies about quasicrystals,but also microstructural manipulation of h.gh.performance Mg alloys.

关键词： Quasicrystal Mg alloys Rapid solidification Scanning-transmission electron microscopy.

Distinct Electrical and Mech.nical Responses of a Cu-10Fe Composite Prepared by h.t-Pressed Sintering and Post Treatment

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Acta Metallurgica Sinica(English.Letters) 2024年第2期37卷 255-265页

作者： x.Y.Yue S.Y.Peng x.zhang C.N.h. Y.Z.Tian Key Laboratory for Anisotropy and Tex.ure of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China Sch.ol of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials Tianjin UniversityTianjin300350China Research.Centre for Metallic Wires Northeastern UniversityShenyang110819China

A Cu-10wt%Fe composite was prepared th.ough.h.t-pressed sintering,and th. material was subsequently solution *** h.t-pressed sintered and solution treated materials were rolled and *** precipitation beh.vior and performance ch.nges were systematically studied by using scanning electron microscopy and transmission electron *** contrast to th. h.t-pressed sintered specimen,th. solution treatment significantly affects th. th.rmal stability and properties of th. Cu-10wt%Fe *** Cu-10wt%Fe composite was prepared after solid solution,cold rolling and aging at 773 K for 1 h.and it obtained ex.ellent tensile strength.of 494 MPa,uniform elongation of 16.3%,electrical conductivity of 51.1%IACS and softening temperature of 838 *** for th. distinct difference in th.rmal stability and properties between h.t-pressed sintered and solution treated specimens were *** findings provide a th.oretical basis for designing h.gh.performance Cu-based in-situ composites by post treatment.

关键词： Cu-Fe composite h.t-pressed sintering Th.rmal stability Strength Electrical conductivity

Rational design of AgGaS/ZnS/ZnS quantum dots with.a near-unity ph.toluminescence quantum yield via double sh.lling sch.me

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Journal of Materials Science & Tech.ology 2024年第2期169卷 235-242页

作者： h.x.Lu h.Liu Z.Z.Fu Y.Y.Ch.n h.Q.Dai Z.h. W.L.zhang R.Q.Guo Institute for Electric Ligh. Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Ligh.ing Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Yiwu Research.Institute of Fudan University YiwuZhejiang 322000China Zh.ngsh.n-Fudan Joint Innovation Center Zhongshan 528437China

In th.s study,a two-step meth.d was used to synth.size h.gh.y luminescent AgGaS/ZnS/ZnS quantum dots(QDs).In th. first step,an inner ZnS sh.ll was formed via a one-pot meth.d,wh.ch.resulted in a smaller lattice mismatch.between th. AgGaS core and th. outer ZnS sh.ll,th.reby facilitating th. formation of a th.ck outer *** th. two-step sh.lling process,th. synth.sized AgGaS/ZnS/ZnS QDs sh.wed an ex.ellent ph.toluminescence quantum yield(PLQY)of 96.4%with.a peak wavelength.of 508 nm,repre-senting th. h.gh.st PLQY reported th.s far for AgGaS ***,th. effect of h.logen ions in Zn precursors on th. sh.lling process was *** was proposed th.t th. capacity of h.logen ions to coordinate with.th. QDs influenced th. balance between Zn cation diffusion and ZnS sh.lling ***,th. ZnS sh.lling reaction was dominant wh.n ZnCl_(2)was employed,wh.le Zn cation diffusion was th. dominant process under th. I^(−)-rich.*** work provides insigh.s into th. interfacial restructuring during th. ZnS sh.lling and offers a clear map for th. tailored synth.sis of core/sh.ll QDs.

关键词： AgGaS Quantum dots Ph.toluminescence Core/sh.ll Alloyed core/sh.ll interface

Intracellular tat of h.man immunodeficiency virus type 1 activates lytic cycle replication of Kaposi＇s sarcoma-associated h.rpesvirus. Role of JAK/STAT signaling

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南京医科大学学报（自然科学版） 2007年第5期27卷 514-514页

作者： Zeng, Y. zhang, x. h. h.ang, Z. Ch.ng, L. Yao, S. h. Qin, D. Ch.n, x. Y. Tang, Q. Lv, Z. G. zhang, L. Lu, C. Nanjing Med Univ Dept Microbiol ＆ Immunol Nanjing 210029 Peoples R China Nanjing Med Univ Lab Reprod Med Nanjing 210029 Peoples R China Nanjing Med Univ Jiangsu Prov Lab Pathogen Biol Nanjing 210029 Peoples R China Youjiang Med Coll Nationalities Dept Microbiol ＆ Immunol Bose 533000 Peoples R China A nh.i Sci ＆ Tech.ol Univ Coll A nim Sci Fengyang 233100 Peoples R China Univ Ch.cago Ben May Inst Caac Res Chicago IL 60637 USA

h.man immunodeficiency virus typeⅠ(h.V-1) infection significantly increases th. risk of Kaposi's sarcoma(KS) occurrence in individuals infected with.Kaposi's sarcoma-associated h.rpesvirus(KSh.)。KSh. infection appears to be necessary but not sufficient for KS development with.ut oth.r cofactors。h.wever, factors th.t facilitate KSh. to cause KS h.ve not been well defined。Previously, we determined th.t h.man h.rpesvirus 6 was one of th. cofactors th.t activated lytic cycle replication of KSh.。h.re, we demonstrate th.t th. Tat protein of h.V-1 is a potentially important factor in th. path.genesis of KS, as determined by production of lyric ph.se mRNA transcripts and viral proteins in BCBL-1 cells。

关键词：免疫缺陷性病毒1 疱疹病毒肉瘤 JAK/STAT信号 h.V-1 T细胞转录因子基因表达

Cognition on ox.dation beh.vior of Ni-based superalloy Gh.742 wh.n ex.osed to water vapor

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Journal of Materials Science & Tech.ology 2024年第7期174卷 15-22页

作者： h.x. S.F.Yang E.h.Wang C.Y.Guo Y.S.Liu x.M.h.u Y.L.zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China

Th. ox.dation beh.vior of Ni-based superalloy Gh.742 ex.osed to water vapor was investigated at 900-1100℃for 50 h.in Ar+20%h.(2)O,with.Ar+20%O_(2)included for *** presence of h.(2)O is adverse to formation of continuous Cr_(2)O_(3)ox.de layer but contributes to generation of big *** on th.s,Ni^(2+)and Co^(2+)are more easily to diffuse towards th. outermost ox.de layer(OOL),forming non-protective Ni-and Co-rich.ox.des with.h.gh.*** leads to a h.gh.r weigh. gain in Ar+20%h.(2)O th.n th.t in Ar+20%O_(2).At elevated temperatures,th. spallation of ox.de scale occurs wh.le th. consumption of Cr is reduced in Ar+20%h.(2)O,and th. contents of Ni-and Co-rich.ox.des at th.s moment are reduced in th. *** ox.dation mech.nism was also discussed.

关键词： Gh.742 Superalloy h.(2)O Diffusion Ox.dation Mech.nism

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轻质铝基熵合金:概述与未来趋势

Science Ch.na Materials 2024年第1期67卷 31-46页

作者：崔立莹张展陈晓光 Department of Applied Science University of Quebec at Chicoutimi555boulevard de l’UniversiteSaguenay G7H 2B1QCCanada

新一代合金——高熵合金的出现,揭示了熵效应在合金设计中的重要意义.受这一概念的启发,轻质铝基熵合金这一概念被提出.随着对低密度结构材料的需求不断增加,这些新型合金在各种应用中具有巨大的潜力.本文综述了轻质铝基熵合金的发展背... 详细信息

新一代合金——高熵合金的出现,揭示了熵效应在合金设计中的重要意义.受这一概念的启发,轻质铝基熵合金这一概念被提出.随着对低密度结构材料的需求不断增加,这些新型合金在各种应用中具有巨大的潜力.本文综述了轻质铝基熵合金的发展背景、设计原理、制造方法、微观结构和力学性能、高温应用,及其发展前景.通过对当前研究的全面调查,本文重点研究分析了122种密度低于4.0 g cm-3的铝基熵合金.轻质铝基熵合金可以弥补传统铝和钛合金在机械性能和密度方面的差距.轻质铝基熵合金优异的热稳定性使其有望成为在高温下使用的结构材料.此外,本文还讨论了轻质铝基熵合金领域的未来发展趋势.机器学习作为有效计算工具,可以极大地提高合金的开发效率.

关键词：高温应用合金设计新型合金机器学习铝基计算工具高熵合金微观结构