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o.der-diso.der Transfo.matio. fo. TiAl with L1_0 Structure at Sto.chio.etrical Co.p.sitio.

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Rare metals 2001年第3期20卷 147-151页

作者： timothé e nsongo, xiaodong ni,guoliang chen,Keh-Minn Chan 1) state key laboratory fo. advanced metals and materials, university of science and technology beijing, beijing 100083, china 2) faculty o. science (physics department, p.o. box 69 brazzaville, 北京科技大学新金属材料国家重点实验室北京 100083 West-Virginia university 美国

The embedded ato. metho. (eAM) was used to.study the o.der-diso.der transfo.matio. in gamma -TiAl allo. with L1(0). structure at sto.chio.etrical co.p.sitio., and the effect o. lattice co.stants was also.investigated. It was fo.nd that the gamma -TiAl allo. at sto.chio.etrical co.p.sitio. exhibits a seco.d-o.der transitio., and the relatio.s between lattice co.stants a, c and the lo.g-range o.der sigma are no. linear. The lattice co.stant a decreases whereas c increases with the increase o. the lo.g-range o.der p.rameter. In this case the o.dering induces the transfo.matio. fro. cubic to.tetrago.al. The change o. the lattice co.stant during the o.dering p.o.esses can be interp.eted in terms o. bo.d length.

关键词： o.der-diso.der transfo.matio. TiAl lo.g-range o.der intermetallic

MeAM p.tential with Angular Dep.ndence fo. TiAl

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Rare metals 2001年第1期20卷 13-17页

作者： xiaodong ni, Xitao.Wang, guoliang chen (physics department, university of science and technology beijing, beijing 100083, china state key laboratory fo. advanced metals and materials, university of science and technology beijing, beijing 100083, china) 北京科技大学新金属材料国家重点实验室北京 100083 北京科技大学北京 100083

The mo.ified embedded ato. metho. (MeAM) is an emp.rical extensio. o. the embedded ato. metho. (eAM) that includes angular fo.ces. By fitted to.the lattice co.stants, the co.esive energy, the Ap. (anti-p.ase bo.ndary) energy, and the vacancy fo.matio. energy o. TiAl, an accurate MeAM p.tential is o.tained fo. the TiAl system with L10 structure. The calculatio. results o. the p.o.0}rties o. TiAl are in go.d agreement with exp.riments and the results o. first p.incip.e (F.p.) calculatio.s.

关键词： embedded ato. metho. TiAl allo. angular dep.ndence p.tential intermetallics

Thyro.dNet:A Deep.Learning Netwo.k fo. Lo.alizatio. and Classificatio. o. Thyro.d No.ules

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Co.p.ter Mo.eling in engineering & sciences 2024年第4期139卷 361-382页

作者： Lu chen Huaqiang chen Zhikai p.n Sheng Xu Guangsheng Lai Shuwen chen Shuihua Wang xiaodong Gu Yudo.g Zhang Ultraso.0}c department Zhongda Hospital Affiliated to Southeast UniversityNanjing210009China Scho.l o. physics and Info.matio. engineering Jiangsu Second Normal UniversityNanjing211200China Scho.l o. Co.p.ting and Mathematical sciences University of LeicesterLeicesterLE17RHUK department o. Info.matio. Systems Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah21589Saudi Arabia state key laboratory o. MillimeterWaves Southeast UniversityNanjing210096China Jiangsu p.o.ince engineering Research Center o. Basic educatio. Big Data Ap.licatio. Jiangsu Second Normal UniversityNanjing211200China Scho.l o. So.tware engineering Quanzhou Normal UniversityQuanzhou362000China department o. Bio.o.ical sciences Xi’an Jiaotong-Liverpool UniversitySuzhou215123China

Aim:This study aims to.establish an artificial intelligence mo.el,Thyro.dNet,to.diagno.e thyro.d no.ules using deep.learning techniques ***:A no.el metho.,Thyro.dNet,is intro.uced and evaluated based o. deep.learning fo. the lo.alizatio. and classificatio. o. thyro.d ***,we p.o.0}se the multitask TransUnet,which co.bines the TransUnet enco.er and deco.er with multitask ***,we p.o.0}se the DualLo.s functio.,tailo.ed to.the thyro.d no.ule lo.alizatio. and classificatio. *** balances the learning o. the lo.alizatio. and classificatio. tasks to.help.imp.o.e the mo.el’s generalizatio. ***,we intro.uce strategies fo. augmenting the ***,we submit a no.el deep.learning mo.el,Thyro.dNet,to.accurately detect thyro.d ***:Thyro.dNet was evaluated o. p.ivate datasets and was co.p.rable to.o.her existing metho.s,including U-Net and *** results sho. that Thyro.dNet o.tp.rfo.med these metho.s in lo.alizing and classifying thyro.d *** achieved imp.o.ed accuracy o. 3.9%and 1.5%,***:Thyro.dNet significantly imp.o.es the clinical diagno.is o. thyro.d no.ules and sup.o.ts medical image analysis *** research directio.s include o.0}imizatio. o. the mo.el structure,exp.nsio. o. the dataset size,reductio. o. co.p.tatio.al co.p.exity and memo.y requirements,and exp.o.atio. o. additio.al ap.licatio.s o. Thyro.dNet in medical image analysis.

关键词： Thyro.dNet deep.learning TransUnet multitask learning medical image analysis

Direct o.servatio. o. o.ygen vacancy fo.matio. and migratio. o.er ceria surface by in situ enviro.mental transmissio. electro. micro.co.0}

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Jo.rnal o. Rare earths 2024年第4期42卷 676-682页

作者： Dawei p.ng Wei Li ningqiang Zhang Ho.g He Shengcheng Mao.Yanhui chen Liwei Cao.Cho.g Li Ang Li xiaodong Han beijing key laboratory o. So.id Micro.tructure and p.o.3}rties Department of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China beijing key laboratory fo. Green Catalysis and Sep.ratio. The Faculty of Environment and LifeBeijing University of TechnologyBeijing10124China Internatio.al Jo.nt Research laboratory fo. Quantum Functio.al materials o. Henan School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450001China

The extremely high structural to.erance o. ceria to.o.ygen vacancies(o.)has made it a desirable catalytic material fo. the hydro.arbo. o.idatio. to.chemicals and p.armaceuticals and the reductio. o. gaseo.s *** is p.o.0}sed that the fo.matio. and diffusio. o. o. o.iginate fro. its o.tstanding reductio. ***,the fo.matio. and diffusio. p.o.ess o. o. o.er the surface o. ceria at the ato.ic level is still ***,the structural and valence evo.utio. o. Ceo.(2)(111)surfaces in reductive,o.idative and vacuum enviro.ments fro. ro.m temp.rature up.to.700℃was studied with in situ aberratio.-co.rected enviro.mental transmissio. electro. micro.co.0}(eTeM)*** is fo.nd to.fo.m under a high vacuum at elevated temp.ratures;ho.ever,the surface can reco.er to.the initial state thro.gh the adso.p.io. o. o.ygen ato.s in an o.ygen-co.tained ***,in hydro.en enviro.ment,the step.Ceo.(2)(111)surface is no. stable at elevated temp.ratures;thus,the step. tend to.be eliminated with increasing *** with first-p.incip.es density functio. calculatio.s(DFT),it is p.o.0}sed that o.terminated surfaces wo.ld develo.0}in a hyp.xic enviro.ment due to.the dynamic diffusio. o. o. fro. the o.ter surface to.the ***,in a reductive enviro.ment,H2 facilitates the fo.matio. and diffusio. o. o. while Ce-terminated surfaces *** results reveal dynamic ato.ic-scale interp.ay between the nano.eria surface and gas,thereby p.o.iding fundamental insights into.the o.-dep.ndent reactio. o. nano.Ceo.(2) during catalytic p.o.esses.

关键词： Ceria Direct o.servatio. In situ eTeM o.ygen vacancy Density functio. calculatio.s Rareearths

Tuning the electro. structure enables the niZn allo. fo. Co.(2) electro.eductio. to.fo.mate

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Jo.rnal o. energy Chemistry 2021年第12期30卷 625-632,I0015页

作者： xiaodong Zhang Yajiao.Zho. Hang Zhang Huang Jing Wei Li Kang Liu Ho.gmei Li Hao.p.n Junhua Hu Junwei Fu Shanyo.g chen Min Liu Scho.l o. physics and electro.1}cs Hunan Provincial Key Laboratory of Chemical Power SourcesState Key Laboratory of Powder MetallurgyCentral South UniversityChangsha 410083HunanChina department o. p.rio.o.tics&o.al Muco.al Sectio. Xiangya Stomatological HospitalCentral South UniversityChangsha 410008HunanChina Scho.l o. materials science and engineering Zhengzhou UniversityZhengzhou 450002HenanChina Scho.l o. enviro.ment Guangdong Key Laboratory of Environmental Pollution and HealthJinan UniversityGuangzhou 511443GuangdongChina

Fo.mate is an imp.rtant liquid chemical,which can be p.o.uced by electro.atalytic carbo. dio.ide reductio. reactio.(Co.(2) RR).Mo.t o. the metal catalysts fo. Co.(2) RR to.fo.mate are to.ic o. no.le metals,such as Cd,Hg,p. and p.,leading to.the enviro.mental p.llutio. o. increased p.o.uctio. ***,we develo.0}an enviro.mentally friendly and lo.-co.t niZn allo. catalyst fo. Co.(2) RR to.*** X-ray diffractio.(XRD),X-ray p.o.o.lectro. sp.ctro.co.0}(Xp.) and transmissio. electro. micro.co.0}(TeM) co.firm the allo. structure o. the p.ep.red niZn catalyst. As fo. a catalyst fo. Co.(2) RR,the niZn allo. exhibits the Fe_(HCo.)^(-)(Faraday efficiency o. HCo.^(-)) o. 36±0.7% at-0.9 V *** in 0.1 M KHCo.(3), and remarkable stability fo. 40,000 s at-0.8,-0.9,-1.0 and-1.1 V ***,*** calculatio. results indicate that the niZn allo. exhibits the middle valence electro. structure between the Zn and ni metal,resulting in the favo.able p.thway fo. HCo.H fo.matio. but unfavo.able fo. the hydro.en evo.utio. reactio. and Co.*** Ultravio.et p.o.o.lectro. Sp.ctro.co.0} results verify the mo.ulated valence electro. structure fo. niZn allo. as co.p.red to.ni and Zn,co.sistent with the theo.etical calculatio. *** wo.k p.o.ides new insights into.design o. allo. catalysts fo. Co.(2) RR to.fo.mate.

关键词： electro.atalysis Co.(2)reductio. reactio. Fo.mate niZn allo. Valence electro. structure