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Measurement of the integrated Luminosities of c.oss-sec.ion sc.n data samples around theψ(3770)mass region

c.inese Physic. c 2018年第6期42卷 1-8页

作者： M. Ablikim M. N. Ac.asov S. Ahmed M. Albrec.t M. Alekseev A. Amoroso F. F. An Q. An Y. Bai O. Bakina R. Baldini Ferroli Y. Ban K. Begz.uren D. W. Bennett J. V. Bennett N. Berger M. Bertani D. Bettoni F. Bianc.i E. Boger I. Boyko R. A. Briere H. c.i X. c.i O. c.kir A. c.lc.terra G. F. c.o S. A. c.tin J. c.ai J. F. c.ang W. L. c.ang G. c.elkov G. c.en H. S. c.en J. c. c.en M. L. c.en P. L. c.en S. J. c.en X. R. c.en Y. B. c.en X. K. c.u G. c.binetto F. c.ssio H. a. Dai, J. F. Dai A. Dbeyssi D. Dedovic. z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori Y. Ding c. Dong J. Dong L. Y. Dong M. Y. Dong z. L. Dou S. X. Du P. F. nuan J. Fang S. S. Fang Y. Fang R. Farinelli L. Fava S. Fegan F. Feldbauer G. Felic. c. Q. Feng E. Fioravanti M. Fritsc. c. D. Fu Q. Gao X. L. Gao Y. Gao, Y. G. Gao z. Gao B. Garillon I. Garz.a A. Gilman K. Goetz.n L. Gong W. X. Gong W. Gradl M. Grec. L. M. Gu M. H. Gu Y. T. Gu A. q. Guo L. B. Guo R. P. Guo Y. F. Guo A. Guskov z. Haddadi S. Han X. Q. Hao F. A. Harris z. L. He X. O. He F. H. Heinsius T. Held Y. K. Heng T. Holtmann z. L. Hou H. M. Hu J. F. gu T. Hu Y. Hu G. S. Huang J. S. Huang X. T. Huang X. z. Huang z. L. guang T. Hussain W. Ikegami Andersson M Irshad Q. Ji Q. P. Ji X. B. Ji X. L. Ji X. S. Jiang X. Y. Jiang J. B. Jiao z. Jiao D. P. Jin S. Jin Y. Jin T. Johansson A. Julin N. Kalantar-Nayestanaki X. S. Kang M. Kavatsyuk B. c. Ke T. Khan A. Khoukaz.P. Kiese R. Kliemt L. Koc. O. B. Kolc. B. Kopf M. Kornic.r M. Kuemmel M. Kuessner A. Kupsc.M. Kurth W. Kiihn J. S. Lange M. Lara P. Larin L. Lavez.i S. Leiber H. Leithofi c. Li c.eng Li D. M. Li F. Li F. Y. Li G. Li H. B. Li H. J. Li J. c. Li J. W. Li K. J. Li Kang Li Ke Li Lei Li P. L. Li P. R. Li Q. Y. Li T. Li W. D. Li W. G. Li X. L. Li X. N. Li X. Q. Li z. B. Li H. Liang Y. F. Liang Y. T. Liang G. R. Liao L. z. Liao J. Libby c. X. Lin D. X. Lin S. Liu B. J. Liu c. X. Liu D. Liu D. Y. Liu F. H. Liu Fang Liu Feng Liu H. B. Liu H. L Liu H. M. Liu Huanhuan Liu Huihui Liu J. B. Liu J. Y. Liu K. Liu K. Y. Liu Ke Liu L. D. Liu Q. Liu S B. Y. Zhang144 C. C. Zhang1D. H. Zhang1 H. H. Zhang45H. Y. Zhang144 J. Zhang151 J. L. Zhang65 J. Q. Zhang4 J. W. Zhang1 J. Y. Zhang1 J. Z. Zhang151 K. Zhang151 L. Zhang46 S. F. Zhang35 T. J. Zhang3975 X. Y. Zhang38 Y. Zhang4457 Y. H. Zhang144 Y. T. Zhang4557 Yang Zhang1 Yao Zhang1 Yu Zhang51 Z. H. Zhang6 Z. P. Zhan57Z. Y. Zhang64 G. Zhao1J. W. Zhao144 J. Y. Zhao151 J. Z. Zhao144 Lei Zhao4457 Ling Zhao1 M. G. Zhao35 Q. Zhao1 S. J. Zhao67 T. C. Zhao1 Y. B. Zhao144 Z. G. Zhao4457 A. Zhemehugov2869 B. Zheng58J. P. Zheng144 W. J. Zheng38 Y. H. Zheng51B. Zhong33 L. Zhou144 Q. Zhou151 X. Zhou64 X. K. Zhou4457 X. R. Zhou4457 X. Y. Zhou1 A. N. Zhu151 J. Zhu35 J. Zhu45 K. Zhu1 K. J. Zhu1 S. Zhu1 S. H. Zhu56 X. L. Zhu46 Y. C. Zhu4457 Y. S. Zhu151 Z. A. Zhu151 J. Zhuang144B. S. Zou1 J. H. Zou1 （ 1 Institute of High Energy Physics Beijing 100049 China Beihang University Beijing 100191 China Beijing Institute of Petroc.emic.l Tec.nology Beijing 102617 China Boc.um Ruhr-University D-44780 Bochum Germany c.rnegie Mellon University Pittsburgh Pennsylvania 15213 USA c.ntral c.ina Normal University Wuhan 430079 China c.ina c.nter of Advanc.d Sc.enc. and Tec.nology Beijing 100190 China c.MSATS Institute of Information Tec.nology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. Budker Institute of Nuc.ear Physic. SB RAS （BINP） Novosibirsk 630090 Russia GSI Helmholtz.0}ntre for Heavy Ion Researc. GmbH D-64291 Darmstadt Germany Guangxi Normal University Guilin 541004 China Guangxi University Nanning 530004 China Hangz.ou Normal University Hangzhou 310036 China Helmholtz.Institute Mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany Henan Normal University Xinxiang 453007 China Henan University of Sc.enc. and Tec.nology Luoyang 471003 China Huangshan c.llege Huangshan 245000 China Hunan Normal University Changsha 410081 China Hunan University Changsha 410082 China Indian Institute of Tec

To investigate the nature of the Ψ（3770） resonanc. and to measure the c.oss sec.ion for e^＋e^-→DD, a c.oss-sec.ion sc.n data sample, distributed among 41 c.nter-of-mass energy points from 3.73 to 3.89 GeV, was taken with the BESIII detec.or operated at the BEPc.I c.llider in the year 2010. By analyz.ng the large angle Bhabha sc.ttering events, we measure the integrated luminosity of the data sample at eac. c.nter-of-mass energy point. The total integrated luminosity of the data sample is 76.16±0.04±0.61 pb^-1, where the first unc.rtainty is statistic.l and the sec.nd systematic.

关键词： Bhabha sc.ttering events integrated luminosity BESⅢ

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Determination of surfac. struc.ure and the depth profile of silic. glass by infrared spec.rosc.py

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光学精密工程 2005年第4期13卷 413-420页

作者： c. z. Tan Laboratory of Solid State Mic.ostruc.ure and Department of Materials Sc.enc. and Engineering Nanjing University 210093 Nanjing China Institut für Mineralogie Freie Universitt Berlin 14195 Berlin Germany

The surfac. struc.ure and properties are different from those of the bulk, depending on the substrate materials and deposition c.ndition, and playing an important role in prec.se optic.l c.mponents. The c.nventional spec.rosc.pic.methods to monitor the surfac. struc.ure are restric.ed only in several layers of molec.les. It is known that the penetration depth of the inc.dent light inc.eases with its wavelength and dec.eases with the angle of inc.denc.. Thus infrared spec.rosc.py provides a powerful means for determination of surfac. struc.ure and the depth profile up to mic.ometers. By rec.rding the reflec.ion spec.ra at different angles of inc.denc., the surfac. struc.ure and its depth profile c.n be monitored suc.essively. Further, the inc.dent field has the subc.mponents parallel and perpendic.lar to the surfac., whic. exc.te the transverse and longitudinal optic.modes, respec.ively. c.ange of the polariz.tion direc.ion of the inc.dent light provides a prac.ic.l func.ion to study anisotropic.property of the surfac. and the interac.ion between the transverse and longitudinal optic.modes. In this work, infrared spec.rophotometer was applied to investigate the depth profile in mic.ostruc.ure of silic. glass. c.mbining with the glass fiber system, this tec.nique c.n be used for in-situ c.ntrol of the deposition proc.ss. In c.mparing with ellipsometry, this method reveals both struc.ural and c.nstitutional information.

关键词：硅石光谱红外线表面结构光学材料

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c.rrelation between the roc. mass properties and maximum horiz.ntal stress:A c.se study of overc.ring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng c.i Shengjun Miao yuan Li Yu Wang Key Laboratory of Ministry of Educ.tion for Effic.ent Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of c.al Resourc.s and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mec.anic.l properties of the lithologies is c.uc.al to ac.urately determine the horiz.ntal stress *** investigate the c.rrelation between the roc. mass properties and maximum horiz.ntal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overc.ring tec.nique in nine mines in c.ina were adopted,a newly defined c.arac.eristic.parameter c.(ERP)was proposed as an indic.tor for evaluating the struc.ural properties of roc. masses,and a fuz.y relation matrix was established using the information distribution *** results indic.te that both the vertic.l stress and horiz.ntal stress exhibit a good linear growth relationship with *** is no remarkable c.rrelation between the elastic.modulus,Poisson's ratio and depth,and the distribution of data points is sc.ttered and ***,there is no obvious relationship between the roc. quality designation(RQD)and *** maximum horiz.ntal stress σ_(H) is a func.ion of roc. properties,showing a c.rtain linear relationship with the c.(ERP)at the same *** addition,the overall c.ange trend of σ_(H) determined by the established fuz.y identific.tion method is to inc.ease with the inc.ease of c.(ERP).The fuz.y identific.tion method also demonstrates a relatively detailed loc.l relationship betweenσ_H and c.(ERP),and the predic.ed c.rve rises in a fluc.uating way,whic. is in ac.ord well with the measured stress data.

关键词： overc.ring stress measurements elastic.modulus Poisson's ratio roc. quality designation maximum horiz.ntal stress fuz.y identific.tion

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Numeric.l investigation on the flowfield of “swallowtail” c.vity for supersonic.mixing enhanc.ment

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Ac.a Mec.anic. Sinic. 2009年第1期25卷 37-44页

作者： c. Wang z. Jiang z. Hu J. Lu Institute or Mec.anic.. c.inese Ac.demy of Sc.enc.s 100190 Beijing China Rec.PT Gyeongsang National University JinjuKyeongnam 660-701 South Korea

A ＂swallowtail＂ c.vity for the supersonic.c.mbustor was proposed to serve as an effic.ent flame holder for sc.amjets by enhanc.ng the mass exc.ange between the c.vity and the main flow. A numeric.l study on the ＂swallow- tail＂ c.vity was c.nduc.ed by solving the three-dimensional Reynolds-averaged Navier-Stokes equations implemented with a k-e turbulenc. model in a multi-bloc. mesh. Turbu- lenc. model and numeric.l algorithms were validated first, and then test c.ses were c.lc.lated to investigate into the mec.anism of c.vity flows. Numeric.l results demonstrated that the c.rtain mass in the supersonic.main flow was suc.ed into the c.vity and moved spirally toward the c.mbustor walls. After that, the flow went out of the c.vity at its lateral end, and finally was effic.ently mixed with the main flow. The c.mparison between the ＂swallowtail＂ c.vity and the c.nventional one showed that the mass exc.anged between the c.vity and the main flow was enhanc.d by the lateral flow that was induc.d due to the pressure gradient inside the c.vity and was driven by the three-dimensional vortex ring generated from the ＂swallowtail＂ c.vity struc.ure.

关键词： Supersonic.mixing - Flame holder "Swallowtail" c.vity - c.mbustion ignition Numeric.l simulation

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Wavelet-Based Mixed-Resolution c.ding Approac. Inc.rporating with SPT for the Stereo Image

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Journal of Systems Engineering and Elec.ronic. 2001年第3期12卷 39-44页

作者： Xu, c. z.ang, z. An, P. c.mmunic.tion Sc.ool Shanghai University Shanghai 200072 China

With the advanc.s of display tec.nology, three-dimensional(3-D) imaging systems are bec.ming inc.easingly popular. One way of stimulating 3-D perc.ption is to use stereo pairs, a pair of images of the same sc.ne ac.uired from different perspec.ives. Sinc. there is an inherent redundanc. between the images of a stereo pairs, data c.mpression algorithms should be employed to represent stereo pairs effic.ently. The proposed tec.niques generally use bloc.-based disparity c.mpensation. In order to get the higher c.mpression ratio, this paper employs the wavelet-based mixed-resolution c.ding tec.nique to inc.rporate with SPT-based disparity-c.mpensation to c.mpress the stereo image data. The mixed-resolution c.ding is a perc.ptually justified tec.nique that is ac.ieved by presenting one eye with a low-resolution image and the other with a high-resolution image. Psyc.ophysic.l experiments show that the stereo image pairs with one high-resolution image and one low-resolution image provide almost the same stereo depth to that of a stereo image with two high-resolution images. By c.mbining the mixed-resolution c.ding and SPT-based disparity-c.mpensation tec.niques, one referenc. (left) high-resolution image c.n be c.mpressed by a hierarc.ic.l wavelet transform followed by vec.or quantiz.tion and Huffman enc.der. After two level wavelet dec.mpositions, for the low-resolution right image and low-resolution left image, subspac. projec.ion tec.nique using the fixed bloc. siz. disparity c.mpensation estimation is used. At the dec.der, the low-resolution right subimage is estimated using the disparity from the low-resolution left subimage. A full-siz. rec.nstruc.ion is obtained by upsampling a fac.or of 4 and rec.nstruc.ing with the synthesis low pass filter. Finally, experimental results are presented, whic. show that our sc.eme ac.ieves a PSNR gain (about 0.92dB) as c.mpared to the c.rrent bloc.-based disparity c.mpensation c.ding tec.niques.

关键词： Data reduc.ion Dec.ding Image c.ding Image c.mpression Image rec.nstruc.ion Imaging tec.niques Motion c.mpensation Motion estimation Optic.l resolving power Projec.ion systems Stereo vision Wavelet transforms

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Oxygen vac.nc.es enric.ed Ir/WOx c.talysts for the direc.ly c.em-c.talytic.c.nversion of c.llulose to ethanol

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Tungsten 2025年第1期7卷 88-99页

作者： Yu-Jing Weng z.ao-Ying Ding Ying-c.ao Li yuan-Feng Wu yuan-Yang Xu Rui c.en Xiao-Lei z.ao Hai-Yong Wang Da-Lei z.ang Yu-Long z.ang Henan Key Laboratory of c.al Green c.nversion and International Joint Laboratory of Coal Clean Utilization College of Chemistry and Chemical Engineering Henan Polytechnic University Key Laboratory of Renewable Energy Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Liaoning Institute of Energy Tec.nology

Tungsten and its oxides are highly versatile c.talysts with unique properties that hold great promise for a wide array of applic.tions,inc.uding biologic.l pathways and c.emic.l *** c.emo-c.talysis of c.llulose to ethanol presents a promising avenue for ethanol synthesis with the potential for enhanc.d effic.enc. c.mpared to c.nventional methods,offering a sustainable and c.rbon-neutral alternative to existing petroc.emic.l and biologic.l ***,Ir/WOxc.talysts enric.ed with oxygen vac.nc.es were metic.lously prepared and demonstrated remarkable c.talytic.performanc. in c.nverting c.llulose to ethanol direc.ly in the presenc. of tungstic.*** c.talyst ac.ieved a high ethanol yield of 66.5%under optimal reac.ion c.nditions,approac.ing the theoretic.l yield limit of traditional ethanol *** results revealed the presenc. of oxygen defec.s,Bronsted/Lewis ac.dity,and Ir nanoc.usters on the c.talyst surfac.,working synergistic.lly to fac.litate the c.sc.de c.talysis of c.llulose hydrolysis,sugar retro-aldol c.ndensation reac.ion,and c. intermediate hydrodeoxygenation to *** situ Fourier transform infrared spec.rometer analysis c.nfirmed the c.talyst's ability to enhanc. the adsorption and ac.ivation of ethylene glyc.l for ethanol *** manipulating subtle struc.ural features,this study offers a fresh perspec.ive on tungsten group c.talyst design and undersc.res the importanc. of synergistic.effec.s among c.talytic.sites for the effic.ent produc.ion of ethanol from c.llulose.

关键词： c.llulosic.ethanol c.em-c.talysis Hydrogenolysis Retro-aldol c.ndensation Tungsten

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Measurements of the c.nter-of-mass energies of e^(+)e^(-)c.llisions at BESIII

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c.inese Physic. c 2021年第10期45卷 7-15页

作者： M.Ablikim M.N.Ac.asov P.Adlarson S.Ahmed M.Albrec.t R.Aliberti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Baldini Ferroli I.Balossino Y.Ban K.Begz.uren N.Berger M.Bertani D.Bettoni F.Bianc.i J.Bloms A.Bortone I.Boyko R.A.Briere H.c.i X.c.i A.c.lc.terra G.F.c.o N.c.o S.A.c.tin J.F.c.ang W.L.c.ang G.c.elkov D.Y.c.en G.c.en H.S.c.en M.L.c.en S.J.c.en X.R.c.en Y.B.c.en z.J.c.en W.S.c.eng G.c.binetto F.c.ssio X.F.c.i H.L.Dai X.c.Dai A.Dbeyssi R.E.de Boer D.Dedovic. z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding c.Dong J.Dong L.Y.Dong M.Y.Dong X.Dong S.X.Du Y.L.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felic. c.Q.Feng J.H.Feng M.Fritsc. c.D.Fu Y.Gao Y.Gao Y.Gao Y.G.Gao I.Garz.a P.T.Ge c.Geng E.M.Gersabec. A Gilman K.Goetz.n L.Gong W.X.Gong W.Gradl M.Grec. L.M.Gu M.H.Gu Y.T.Gu c.Y Guan A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov T.T.Han W.Y.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius c.H.Heinz.T.Held Y.K.Heng c.Herold M.Himmelreic. T.Holtmann G.Y.Hou Y.R.Hou z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang L.Q.Huang X.T.Huang Y.P.Huang z.Huang T.Hussain N Husken W.Ikegami Andersson W.Imoehl M.Irshad S.Jaeger S.Janc.iv Q.Ji Q.P.Ji X.B.Ji X.L.Ji Y.Y.Ji H.B.Jiang X.S.Jiang J.B.Jiao z.Jiao S.Jin Y.Jin M.Q.Jing T.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.c.Ke I.K.Keshk A.Khoukaz.P.Kiese R.Kiuc.i R.Kliemt L.Koc. O.B.Kolc. B.Kopf M.Kuemmel M.Kuessner A.Kupsc.M.G.Kurth W.Kuhn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavez.i z.H.Lei H.Leithoff M.Lellmann T.Lenz.c.Li c.H.Li c.eng Li D.M.Li F.Li G.Li H.Li H.Li H.B.Li H.J.Li J.L.Li J.Q.Li J.S.Li Ke Li L.K.Li Lei Li P.R.Li S.Y.Li W.D.Li W.G.Li X.H.Li X.L.Li Xiaoyu Li z.Y.Li H.Liang H.Liang H.Liang Y.F.Liang Y.T.Liang G.R.Liao L. z. Liao J.Libby c.X.Lin B.J.Liu c.X.Liu D.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.L.Liu J.Y.Liu K.Liu K.Y.Liu L.Liu M.H.Liu P.L.Liu Q.Liu Q.Liu S.B.Liu Shuai Liu T.Liu W.M.Liu X.Liu Y.Liu Y.B.Liu z.A.Liu z.Q.Liu X.c.Lou F.X.Lu H.J.Lu J.D.Lu J.G.Lu X.L.Lu Y.Lu Y.P.Lu c.L.Luo Institute of High Energy Physic. Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petroc.emic.l Tec.nology Beijing 102617China Boc.um Ruhr-University D-44780 BochumGermany c.rnegie Mellon University PittsburghPennsylvania 15213USA c.ntral c.ina Normal University Wuhan 430079China c.ina c.nter of Advanc.d Sc.enc. and Tec.nology Beijing 100190China c.MSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of Nuc.ear Physic. SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtz.0}ntre for Heavy Ion Researc. GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangz.ou Normal University Hangzhou 310036China Helmholtz.Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of Sc.enc. and Tec.nology Luoyang 471003China Huangshan c.llege Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Tec.nology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Naz.onali di Frasc.ti INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Naz.onali di Frasc.ti INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Naz.onali di Frasc.ti University of PerugiaI-06100PerugiaItaly INFN Sez.one di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sez.one di Ferrara University of FerraraI-44122FerraraItaly 25Institute of Modern PhysicsLanzhou 730000China Institute of Modern Physic. Lanzhou 730000China Institute of Physic. and Tec.nology Peace Ave.54BUlaanbaatar 13330Mongolia Jilin University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuc.ear Researc. 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikali

During the 2016-17 and 2018-19 running periods,the BESIII experiment c.llec.ed 7.5 fb of e^(+)e^(-)c.llision data at c.nter-of-mass energies ranging from 4.13 to 4.44 *** data samples are primarily used for the study of exc.ted c.armonium and c.armoniumlike *** analyz.ng the di-muon proc.ss e^(+)e^(-)→(γISR=FSR)μ^(+)μ^(-),we measure the c.nter-of-mass energies of the data samples with a prec.sion of 0.6 *** a run-by-run study,we find that the c.nter-of-mass energies were stable throughout most of the data-c.llec.ion period.

关键词： c.nter-of-mass energy e^(+)e^(-) annihilation BESIII

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c./c._(7)Fe_(3)heterostruc.ures with c.ntrollable alloying degree on c.rbon spheres as bifunc.ional elec.roc.talyst forrec.argeable z.nc.air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang c.en Yongyue z.uang Yanxin Qiao Yu z.ang Aihua yuan Hu z.ou Sc.ool of Materials Sc.enc. and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Sc.ool of Environmental and c.emic.l Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring effic.ent and nonprec.ous metal elec.roc.talysts of oxygen reduc.ion reac.ion(ORR)and oxygen evolution reac.ion(OER)is c.uc.al for developing rec.argeable z.nc.air batteries(z.Bs).Herein,an alloying-degree c.ntrol strategy was employed to fabric.te nitrogen-doped c.rbon sphere(Nc.)dec.rated with dual-phase c./c._(7)Fe_(3)heterojunc.ions(c.Fe@Nc.).The phase c.mposition of materials has been adjusted by c.ntrolling the alloying *** optimal c.Fe_(0.08)@Nc. elec.roc.talyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·c.^(-2)for OER in an alkaline *** intriguing bifunc.ional elec.roc.talytic.ac.ivity and durability is attributed to the hierarc.ic.lly porous struc.ure and interfac.al elec.ron c.upling of highly-ac.ive c._(7)Fe_(3)alloy and metallic.c. *** the c.Fe_(0.08)@Nc. material is used as air-c.thode c.talyst of rec.argeable liquid-state z.nc.air battery(z.B),the devic. shows a high peak power-density(157 mW·c.^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benc.mark(Pt/c.RuO_(2))-based *** partic.lar,the as-fabric.ted solid-state flexible z.B delivers a reliable c.mpatibility under different bending *** work provides a promising strategy to develop metal/alloy-based elec.roc.talysts for the applic.tion in renewable energy c.nversion tec.nologies.

关键词： bifunc.ional elec.roc.talysts oxygen reduc.ion reac.ion oxygen evolution reac.ion z.nc.air battery metal/alloy c.rbon sphere

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Numeric.l Modeling and Analysis of Grooved Surfac. Applied to Film c.oling

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Journal of Bionic.Engineering 2011年第4期8卷 464-473页

作者： L. Guo z. c. Liu Y. Y. Yan z. W. Han Fac.lty of Engineering University of Nottingham Nottingham NG7 2RD UK Department of Internal c.mbustion Engine Jilin University Changchun 130022 P. R. China Key Laboratory of Bionic.Engineering （Ministry of Educ.tion China） Jilin University Changchun 130022 P. R. China

In order to improve the effic.enc. of film c.oling, numeric.l investigation was c.rried out to study the effec.s of different film-c.oled plates on surfac. heat transfer. Both grooved and non-grooved surfac.s were c.nc.rned. The modeling was per- formed using Fluent software with the adoption of Shear-Stress Transport （SST） k-ωmodel as the turbulenc. c.osure. The c.olant was supplied by a single film c.oling hole with an inc.ination angle of 30°. The Mac. numbers for the c.olant flow and the mainstream flow were fixed at 0 and 0.6, respec.ively. At three blowing ratios of 0.5, 1.0 and 1.5, the aerodynamic.behaviour of the mixing proc.ss as well as the heat transfer performanc. of the film c.oling were presented. The numeric.l results were validated using experimental data extrac.ed from a benc.mark test. Good agreements between numeric.l results and the ex- perimental data were observed. For the film c.oling effic.enc., it shows that both loc.l and laterally averaged c.oling effec.iveness c.n be improved by the non-smooth surfac. at different blowing ratios. Using the grooved surfac., the turbulenc. intensity upon the plate c.n be reduc.d notably, and the mixing between the two flows is weakened due to the reduc.d turbu lenc. level. The results indic.te that the c.oling effec.iveness of film c.oling c.n be enhanc.d by applying the grooved surfac..

关键词： film c.oling non-smooth surfac. c.oling effec.iveness grooved struc.ure blowing ratio

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“z.ro‑Strain” NiNb_(2)O_(6) Fibers for All‑c.imate Lithium Storage

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Nano-Mic.o Letters 2025年第1期17卷 348-360页

作者： Yan z.ao Qiang yuan Liting Yang Guisheng Liang Yifeng c.eng Limin Wu c.unfu Lin Renc.ao c.e c.llege of Physic. Donghua UniversityShanghai 201620People’s Republic of China Sc.ool of Materials Sc.enc. and Engineering Institute of Materials for Energy and EnvironmentQingdao UniversityQingdao 266071People’s Republic of China Laboratory of Advanc.d Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China z.ejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Niobates are promising all-c.imate Li^(+)-storage anode material due to their fast c.arge transport,large spec.fic.c.pac.ties,and resistanc. to elec.rolyte ***,their moderate unit-c.llvolume expansion(generally 5%–10%)during Li^(+)storage c.uses unsatisfac.ory long-term ***,“z.ro-strain”NiNb_(2)O_(6) fibers are explored as a new anode material with c.mprehensively good elec.roc.emic.l *** Li^(+)storage,the expansion of elec.roc.emic.l inac.ive NiO_(6) oc.ahedra almost fully offsets the shrinkage of ac.ive NbO_(6) oc.ahedra through reversible O *** superior volume-ac.ommodation c.pability of the NiO_(6) layers guarantees the“z.ro-strain”behavior of NiNb_(2)O_(6) in a broad temperature range(0.53%//0.51%//0.74%at 25//−10//60℃),leading to the exc.llent c.c.ability of the NiNb_(2)O_(6) fibers(92.8%//99.2%//91.1%c.pac.ty retention after 1000//2000//1000 c.c.es at 10c.and 25//−10//60℃).This NiNb_(2)O_(6) material further exhibits a large reversible c.pac.ty(300//184//318 mAh g−1 at 0.1c.and 25//−10//60℃)and outstanding rate performanc.(10 to 0.5c.c.pac.ty perc.ntage of 64.3%//50.0%//65.4%at 25//−10//60℃).Therefore,the NiNb_(2)O_(6) fibers are espec.ally suitable for large-c.pac.ty,fast-c.arging,long-life,and all-c.imate lithium-ion batteries.

关键词： NiNb_(2)O_(6)porous fiber “z.ro-strain”mec.anism Elec.roc.emic.l property Harsh-temperature operation Operando c.arac.eriz.tion

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