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Acta Metallurgica Sinica(English Letters) 2018年第5期31卷 503-514页

作者： H.Q.Huang H.S.Di N.Yan j.c.zhang Y.G.Deng R.D.K.Misra j.P.Li State Key Laboratory of Rolling and Automation Northeastern University Laboratory for Excellence in Advanced Steel Research Department of Metallurgical Materials and Biomedical Engineering University of Texas at El Paso

Hot deformation behavior of a high Al-low Si transformation-induced plasticity（TRIP） steel was studied by an MMS-300 thermo-simulation machine at the temperature range of 1050–1200℃ and strain rate range of 0.01–10s^（-1）. The constitutive equations of the TRIP steel were established at high temperature by fitting the strain factor with a sixth-order polynomial. The instability during hot rolling was discussed using processing maps. The results reveal that two types of flow stress curves（dynamic recrystallization and dynamic recovery） were observed during the hot compression of the high Al-low Si TRIP steel. Flow stress decreased with increasing deformation temperature and decreasing strain rate. The predicted flow stress of experimental TRIP steel is in agreement with the experimental values with an average absolute relative error of 4.49% and a coefficient of determination of 0.9952. According to the obtained processing maps, the TRIP steel exhibits a better workability at strain rate of 0.1s^（-1） and deformation temperature of 1200℃ as compared to other deformation conditions.

关键词： TRIP steel Hot compression constitutive equation Processing maps

On the formation of shear bands in a metallic glass under tailored complex stress fields

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journal of Materials Science & Technology 2020年第18期52卷 112-117页

作者： S.H.chen T.Li W.j.chang H.D.Yang j.c.zhang H.H.Tang S.D.Feng F.F.Wu Y.c Wu School of Mechanical Engineering Hefei University of TechnologyHefei 230009China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China School of Materials Science and Engineering Liaoning University of TechnologyJinzhou 121001China School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China

The formation of shear bands in metallic glasses(MGs)was examined by tailoring localized complex stress fields(LcSFs).The findings have shown that the LcSFs in MGs can increase the localization of strained atoms and accelerate the release of accumulated deformation energy for initiating a shear band in confined and thin-layered *** findings not only add more knowledge to the formation mechanisms of shear bands in MGs,but also provide possible rationale for the discrepancies in the mechanical properties of different-sized *** compared with the bulk samples,the higher strength and larger elastic limits in nanoscaled MGs could be attributed to the elimination of stress-concentrators,which can serve as LcSFs.

关键词： Localized complex stress field Shear band Metallic glass Molecular dynamics simulation Size effect

Magnetic phase transitions and magnetocaloric properties of Gd5Si0.4ln3.6 compound

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Magnetic phase transitions and magnetocaloric properties of ...

Sea salt aerosols as a reactive surface for inorganic and organic acidic gases in the arctic troposphere

2012 china Functional Materials Technology and Industry Forum

作者： c.jing X.L.Wang D.H.Yu Y.j.Yang B.j.Kang S.X.cao j.c.zhang Z.Li j.Zhu B.Lu Department of Physics Shanghai University college of Physics and Electronic Engineering Key Laboratory of Yunnan Higher Education Institutes for Advanced Functional and Low Dimensional MaterialsQujing Normal University State Key Laboratory of Surface Physics and Department of Physics Fudan University Laboratory for Microstructures Shanghai University

The magnetic phase transitions and magnetocaloric properties of GdSiIn compound have been *** measurements performed at different conditions reveal that the sample undergoes two magnetic phase *** is a second-order transition from paramagnetic to ferromagnetic state at about 197 K,the other is a first-order transition when the temperature is reduced to 75 *** magnetocaloric effect around curie temperature(T) was calculated in terms of isothermal magnetic entropy change by using Maxwell’s equation,which remains over a quite wide temperature span of 70 K between the temperature region from 160 to 240 K,and thus makes this material attractive for magnetic refrigerator applications.

关键词： Gd5Si0.4In3.6 compound magnetocaloric effect magnetic entropy change

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Sea salt aerosols as a reactive surface for inorganic and or...

Lactation performance of murrah-improved dairy buffalo grazing on improved pasture

第十二届全国气溶胶会议暨第十三届海峡两岸气溶胶技术研讨会

作者： j.W.chi W.j.Li D.Z.zhang j.c.zhang Y.T.Lin X.j.Shen j.Y.Sun j.M.chen X. Y.zhang Y.M.zhang W.X.Wang Environment Research Institute Shandong University Faculty of Environmental and Symbiotic Sciences Prefectural University of Kumamoto Key Laboratory of the Earth' Deep Interior Institute of Geology and GeophysicsChinese Academy of Sciences Key Laboratory of Atmospheric chemistry of cMA Institute of Atmospheric CompositionChinese Academy of Meteorological Sciences

Sea salt aerosols(SSA) are dominant particles in the arctic atmosphere and determine the polar radiative balance. SSA react with acidic pollutants that lead to changes of physical and chemical properties of their surface, which in turn alter their hygroscopic and optical properties. Transmission electron microscopy with energy-dispersive X-ray spectrometry was used to analyze morphology, composition, size, and mixing state of individual SSA at Ny-?lesund, Svalbard in summertime. Individual fresh SSA contained cubic Nac l coated by certain amounts of Mg cl2 and ca SO4. Individual partially aged SSA contained irregular Nac l coated by a mixture of NaN O3, Na2SO4, Mg(NO3)2, and MgS O4. The comparison suggests the hydrophilic Mg cl2 coating in fresh SSA likely intrigued the heterogeneous reactions at the beginning of SSA and acidic gases. Individual fully aged SSA normally had Na2SO4 cores and an amorphous coating of NaN *** mappings of individual SSA particles revealed that as the particles ageing cl gradually decreased but the c, N, O, and S content increased. 12c-mapping from nanoscale secondary ion mass spectrometry indicates that organic matter increased in the aged SSA compared with the fresh SSA. 12c- line scan further shows that organic matter was mainly concentrated on the aged SSA surface. These new findings indicate that this mixture of organic matter and Na NO3 on particle surfaces likely determines their hygroscopic and optical properties. These abundant SSA as reactive surfaces absorbing inorganic and organic acidic gases can shorten acidic gas lifetimes and influence the possible gaseous reactions in the arctic atmosphere, which need to be incorporated into atmospheric chemical models in the arctic troposphere.

关键词： Individual sea salt aerosols TEM heterogeneous reaction Arctic

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Lactation performance of murrah-improved dairy buffalo grazi...

A functional tacrolimus-releasing nerve wrap for enhancing nerve regeneration following surgical nerve repair

ⅩⅪ International Grassland congress and the Ⅷ International Rangeland congress

作者： O.R.Yang~* A.K.Wang j.c.zhang M.F.Fu B.Z.Huang X.P.Yuan S.P.Yang Yunnan Beef cattle & Pasture Research center Kunming 650212 P.R.china

＜正＞Introduction Water buffalo are heat-tolerant and tick-resistant,which is favorable to breeding in some tropical and sub-tropical areas where the Holstein dairy cattle don’t perform ***,the function of water buffalo is changing from draught into milking use to supply high quality milk,that increases farmer household *** experiment studied the milking producing

关键词： lactation dairy buffalo grazing improved pasture

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Neural Regeneration Research 2025年第1期20卷 291-304页

作者： Simeon c.Daeschler Katelyn j.W.So Konstantin Feinberg Marina Manoraj jenny cheung jennifer zhang Kaveh Mirmoeini jPaul Santerre Tessa Gordon Gregory HBorschel SickKids Research Institute Neuroscience and Mental Health ProgramTorontoONCanada Institute of Biomaterials and Biomedical Engineering University of TorontoTorontoONCanada Indiana University School of Medicine IndianapolisINUSA Division of Plastic and Reconstructive Surgery the Hospital for Sick ChildrenTorontoONCanada Translational Biology and Engineering Program Ted Rogers Centre for Heart ResearchInstitute of Biomedical EngineeringFaculty of DentistryUniversity of TorontoTorontoONCanada

Axonal regeneration following surgical nerve repair is slow and often incomplete,resulting in poor functional recovery which sometimes contributes to lifelong ***,there are no FDA-approved therapies available to promote nerve *** accelerates axonal regeneration,but systemic side effects presently outweigh its potential benefits for peripheral nerve *** authors describe herein a biodegradable polyurethane-based drug delivery system for the sustained local release of tacrolimus at the nerve repair site,with suitable properties for scalable production and clinical application,aiming to promote nerve regeneration and functional recovery with minimal systemic drug *** is encapsulated into co-axially electrospun polycarbonate-urethane nanofibers to generate an implantable nerve wrap that releases therapeutic doses of bioactive tacrolimus over 31 *** and drug loading are adjustable for applications in small and large caliber nerves,and the wrap degrades within 120 days into biocompatible *** released from the nerve wrap promotes axon elongation in vitro and accelerates nerve regeneration and functional recovery in preclinical nerve repair models while off-target systemic drug exposure is reduced by 80%compared with systemic *** its surgical suitability and preclinical efficacy and safety,this system may provide a readily translatable approach to support axonal regeneration and recovery in patients undergoing nerve surgery.

关键词： biodegradable local drug delivery nerve injury nerve regeneration nerve wrap tacrolimus

Effects of carbon content on the microstructure and tensile properties of a low-density steel

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International journal of Minerals,Metallurgy and Materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu Fan Shuyong jiang Zhongwu zhang Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Metal Material for Marine Equipment and Application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-jaoul(c-j)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)c carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

Sleep as a window to understand and regulate Alzheimer's disease:emerging roles of thalamic reticular nucleus

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Neural Regeneration Research 2025年第6期20卷 1711-1712页

作者： Haoqi Sun Shiqian Shen Robert j.Thomas M.Brandon Westover can zhang Department of Neurology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA center for Translational Pain Research Department of AnesthesiaCritical Care and Pain MedicineMassachusetis General HospitalHarvard Medical SchoolBostonMAUSA Division of Pulmonary Critical Care and Sleep MedicineDepartment of MedicineBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA Genetics and Aging Research Unit McCance Center for Brain HealthMass General Institute for Neurodegenerative DiseaseDepartment of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMAUSA

Introduction:Alzheimer 's disease(AD) is a common neurodegenerative disorder and the primary cause of dementia. considerable evidence supports the “amyloid hypothesis,” stating that the pathogenesis of AD is primarily caused by the deposition of amyloid-β(Aβ), which drives tau phosphorylation, neuroinflammation, and neurodegeneration in the brain. The amyloid hypothesis is strengthened by the significant and moderate benefit of lecanemab, a humanized antibody through an anti-amyloid mechanism,showing slowed clinical decline(van Dyck et al.,2023). The recent positive results of anti-amyloid trials have brought back focus on the amyloid hypothesis through biochemical, genetic, and pharmacological approaches(zhang, 2023).

关键词： Alzheimer inflammation hypothesis

Dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

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journal of Energy chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang jian Wang Panpan zhang Xiaomin cheng Qinghua Guan jing Dong Bixian chen Lujie jia jing zhang Yongzheng zhang Yunjian Liu Hongzhen Lin School of Materials Science and Engineering Jiangsu University i-Lab & cAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) School of Materials Science and Engineering Xi'an University of Technology State Key Laboratory of chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMBs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （SEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNB@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关键词： Zn metal battery Dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

Synergistically enhanced ORR and HER performance on co-N-c coupled in-situ generated Ptco intermetallic

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journal of Energy chemistry 2025年第1期100卷 721-729页

作者： Guanyu Luo Min Song Lulu An Xiao Huang Qian zhang chenhao zhang Tao Shen Shuang Wang Deli Wang Key Laboratory of Material chemistry for Energy conversion and Storage (Huazhong University of Science and Technology) Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology

Integrating multi-scale sites in a composite catalyst is vital to realize efficient ***,a synergistic composite catalyst consisting of co atomic sites and in-situ generated Ptco intermetallic compounds （IMcs）(o-Ptco@coNc) is proposed through co pre-anchoring and subsequent impregnation-reduction *** loading of co atoms provides a chance for in-situ generating Ptco ordered intermetallic *** remaining co single atoms and Ptco IMcs construct synergistic electrocatalytic *** from the ordered structure,synergistic effect of Pt co IMcs and co single atoms,o-Ptco@coNc exhibits excellent electrocatalytic performance for oxygen reduction reaction （ORR） and hydrogen evolution reaction （HER） with mass activity of 1.21 A mgPt-1（at 0.9 V） and5.70 A mgPt-1（at an overpotential of 100 mV）,***,o-Ptco@coNc delivers negligible loss of half-wave potential and overpotential during long-term stability test in acid solutions,with 13 mV decay after 50,000 potential cycles for ORR and a 2.7 mV decay after 20,000 potential cycles for *** integration strategy of single-atomic sites coupled IMcs paves the way for enhancing the activity and durability of Pt-based electrocatalysts.

关键词： Electrolytic reduction