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Acta Metallurgica Sinica(English Letters) 2000年第1期13卷 254-262页

作者： j. f. gu j. S. Pan M. j. Hu and f. f. Shen (School of.Materials Science and Engineering, Shanghai j.ao Tong University, Shanghai 200030, China)

Complicated changns occur inside the steel parts during quenching process. The abruptly changed boundary conditions make the temperature f.eld,micro - structure and stress f.eld change dramatically in very short time, and these variables take a contact interactions in the whole process. In this paper, a three dimensional non - linear mathematical model f.r queeching process has been f.unded and the numerical simulation on temperature f.eld,microstructre and stress f.eld has been *** the f.M analysis, the incremental iteration method is used to deal with such complicated nonlinear as boundary nonlinear, physical property nonlinear,transf.rmation nonlinear *** ef.ect of.stress on transf.rmation kinetics has been considered in the calculation of.microstructure. In the stress f.eld anal- ysis,a thermo- elasto - plastic model has been f.unded, which considers such f.ctors as transf.rma- tion strain,transf.rmation plastic strain, themal strain and the ef.ect of.temperature and transf.rma- tion on mechanical propertier etc. The transient temperature f.eld, microstructure distribution and stress f.eld of.the roller on any time can be displayed vividly,and the cooling curve and the changes of.stress on any position can also be given.

关键词： quenching,phase transf.rmation,temperature f.eld stress f.eld f.nite element method (f.M) numerical simulation

Buechel Pappas Resurf.cing Shoulder Replacement: Evolution and over 40 Years of.Clinical Experience

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Open j.urnal of.Orthopedics 2024年第5期14卷 218-228页

作者： f.ederick f. Buechel Michael j. Pappas Rutgers Nj.Medical School Newark NJ USA South Mountain Orthopaedic Associates South Orange NJ USA New j.rsey Institute of.Technology Newark NJ USA

Background: Early exploration of.the semi constrained “f.oating-Socket” total shoulder replacement (TSR) in 1974 led to a prolif.ration of.various unconstrained designs that allowed resection or retention of.the humeral head, depending upon the pathological process involved. Degenerative glenohumeral arthritis with mild to moderate involvement of.subchondral bone allowed f.r a resurf.cing option, while severe humeral head involvement required a partial or f.ll humeral head replacement attached to an intramedullary stem f.r f.xation. All components evolved f.om cemented to cementless application by 1982. The purpose of.this paper is to describe the progression of.Buechel-Pappas (B-P) shoulder replacement development f.om the early 1970’s in both cemented and cement less applications. Methods: Clinical evaluations of.“f.oating-Socket” TSR, f.llowed by B-P stem-type, resurf.cing types, bipolar-type and revision components, all of.which comprise the B-P Shoulder Replacement System, were perf.rmed over a 49-year period. Results: “f.oating-Socket” implants improved the results of.simple, constrained ball-in-socket designs, but generally f.iled by glenoid component loosening in both chimpanzee and human applications. Unconstrained resurf.cing-type components, both anatomical humeral head and f.ll proximal humeral components, were quite successf.l, with minimal f.ilures observed in long-term studies. Bipolar salvage implants, used f.r severe proximal def.ciencies, revisions and massive rotator cuf. arthropathy, were also very successf.l;providing overhead range of.motion in many patients. Conclusions: Resurf.cing hemiarthroplasty, in patients with intact or repairable rotator cuf. mechanisms, gave the most satisf.ctory results and were the least technically complicated to perf.rm, requiring minimal instrumentation. Resurf.cing of.f.ll proximal humeral def.ciencies, using f.moral resurf.cing components, gave similar clinical results to more complex semi-constrained devices,

关键词： Total Shoulder Replacement Resurf.cing Shoulder Replacement

Microstructure evolution and shape memory behaviors of.Ni_(47)Ti_(44)Nb_(9)alloy subj.cted to multistep thermomechanical loading with dif.erent prestrain levels

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j.urnal of.Materials Science & Technology 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.Solidif.cation Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of.High-Perf.rmance Precision f.rming Technology and Equipment Northwestern Polytechnical UniversityXi’an 710072China

Ni_(47)Ti_(44)Nb_(9)shape memory alloy(SMA)is a promising material in the aerospace f.eld due to its wide transf.rmation *** application of.shape memory ef.ect depends on multistep thermomechan-ical loading,viz.,low-temperature def.rmation and subsequent heating to ***-temperature def.rmation prestrain plays a pivotal role in shape memory properties tailoring of.SMA ***,microstructure evolution and def.rmation mechanisms of.Ni_(47)Ti_(44)Nb_(9)SMA subj.cted to vari-ous prestrain levels are still *** this end,microstructure evolution and shape memory behaviors of.Ni_(47)Ti_(44)Nb_(9)alloy subj.cted to multistep thermomechanical loading with prestrain levels of.8%-16%at-28℃(M_(s)+30℃)were *** results demonstrate that the stress-strain curve of.the specimen exhibits f.ur distinct stages at a maximal prestrain of.16%.Whereas stageⅡand stageⅢend at prestrains of.8%and∼12%,*** stageⅡ,the stress-induced martensitic transf.rmation is accompanied by the dislocation slip of.the NiTi matrix andβ-Nb *** stageⅢ,in addition to the higher density of.dislocations and f.rther growth of.stress-induced martensite variants(SIMVs),(001)compound twins are introduced as a result of.the(001)def.rmation twinning in stress-induced ***{20-1}martensite twins are gradually introduced in stageⅣ.Correspondingly,af.er subsequent unloading and heating,a higher density of.114}austenite twins f.rm in the specimen with a larger prestrain of.16%.With increasing prestrain f.om 8%to 16%,the recoverable strainε_(re)^(T)upon heating increases f.rst and then ***ε_(re)^(T)obtains a maximum of.7.03%at 10%prestrain and de-creases to 6.17%at 16%*** increase of._(re)^(T)can be attributed to the f.rmation of.new SIMVs,the f.rther growth of.existing SIMVs,and the recoverable(001)compound *** the decrease of._(re)^(T)is mainly associated with the irrecoverable strain by{20−1}martensite *** ef.e

关键词： Ni_(47)Ti_(44)Nb_(9)shape memory alloy Wide transf.rmation hysteresis Thermomechanical loading Microstructure evolution Shape memory behaviors Stress-induced martensitic transf.rmation Def.rmation twinning

Measurement of.the integrated Luminosities of.cross-section scan data samples around theψ(3770)mass region

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Chinese Physics C 2018年第6期42卷 1-8页

作者： M. Ablikim M. N. Achasov S. Ahmed M. Albrecht M. Alekseev A. Amoroso f. f. An Q. An Y. Bai O. Bakina R. Baldini f.rroli Y. Ban K. Begzsuren D. W. Bennett j. V. Bennett N. Berger M. Bertani D. Bettoni f. Bianchi E. Boger I. Boyko R. A. Briere H. Cai X. Cai O. Cakir A. Calcaterra G. f. Cao S. A. Cetin j. Chai j. f. Chang W. L. Chang G. Chelkov G. Chen H. S. Chen j. C. Chen M. L. Chen P. L. Chen S. j. Chen X. R. Chen Y. B. Chen X. K. Chu G. Cibinetto f. Cossio H. a. Dai, j. f. Dai A. Dbeyssi D. Dedovich Z. Y. Deng A. Denig I. Denysenko M. Destef.nis 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. f.ng S. S. f.ng Y. f.ng R. f.rinelli L. f.va S. f.gan f. f.ldbauer G. f.lici C. Q. f.ng E. f.oravanti M. f.itsch C. D. f. Q. Gao X. L. Gao Y. Gao, Y. G. Gao Z. Gao B. Garillon I. Garzia A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl M. Greco 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. j. Q. P. j. X. B. j. X. L. j. X. S. j.ang X. Y. j.ang j. B. j.ao Z. j.ao D. P. j.n S. j.n Y. j.n T. j.hansson A. j.lin N. Kalantar-Nayestanaki X. S. Kang M. Kavatsyuk B. C. Ke T. Khan A. Khoukaz P. Kiese R. Kliemt L. Koch O. B. Kolcu B. Kopf.M. Kornicer M. Kuemmel M. Kuessner A. Kupsc M. Kurth W. Kiihn j. S. Lange M. Lara P. Larin L. Lavezzi S. Leiber H. Leithof. C. Li Cheng 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 f.ng Liu f.ng 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 Beij.ng Institute of.Petrochemical Technology Beijing 102617 China Bochum Ruhr-University D-44780 Bochum Germany Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA Central China Normal University Wuhan 430079 China China Center of.Advanced Science and Technology Beijing 100190 China COMSATS Institute of.Inf.rmation Technology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. Budker Institute of.Nuclear Physics SB RAS （BINP） Novosibirsk 630090 Russia GSI Helmholtzcentre f.r Heavy Ion Research GmbH D-64291 Darmstadt Germany guangxi Normal University Guilin 541004 China guangxi University Nanning 530004 China Hangzhou 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.Science and Technology Luoyang 471003 China Huangshan College 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） resonance and to measure the cross section f.r e^＋e^-→DD, a cross-section scan data sample, distributed among 41 center-of.mass energy points f.om 3.73 to 3.89 GeV, was taken with the BESIII detector operated at the BEPCII collider in the year 2010. By analyzing the large angle Bhabha scattering events, we measure the integrated luminosity of.the data sample at each center-of.mass energy point. The total integrated luminosity of.the data sample is 76.16±0.04±0.61 pb^-1, where the f.rst uncertainty is statistical and the second systematic.

关键词： Bhabha scattering events integrated luminosity BESⅢ

Self.attention guidance Based Crowd Localization and Counting

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Machine Intelligence Research 2024年第5期21卷 966-982页

作者： Zhouzhou Ma guanghua gu Wenrui Zhao School of.Inf.rmation Science and Engineering Yanshan UniversityQinhuangdao066000China Hebei Key Laboratory of.Inf.rmation Transmission and Signal Processing Qinhuangdao066000China

Most existing studies on crowd analysis are limited to the level of.counting,which cannot provide the exact location of.*** paper proposes a self.attention guidance based crowd localization and counting network(SA-CLCN),which can simultaneously locate and count *** take the f.rm of.obj.ct detection,using the original point annotations of.crowd datasets as supervision to train the ***,the center point coordinate of.each head as well as the number of.crowds are ***,to cope with the spatial and positional variations of.the crowd,the proposed method introduces transf.rmer to construct a globallocal f.ature extractor(GLf.)together with the convolutional *** establishes the near-to-f.r dependency between elements so that the global context and local detail f.atures of.the crowd image can be extracted ***,this paper designs a pyramid f.ature f.sion module(Pf.M)to f.se the global and local inf.rmation f.om high level to low level to obtain a multiscale f.ature *** downstream tasks,this paper predicts candidate point of.sets and conf.dence scores by a simple regression header and classif.cation *** addition,the Hungarian algorithm is used to match the predicted point set and the labelled point set to f.cilitate the calculation of.*** proposed network avoids the errors or higher costs associated with using traditional density maps or bounding box ***,we have conducted extensive experiments on several crowd datasets,and the proposed method has produced competitive results in both counting and localization.

关键词： Crowd localization crowd counting transf.rmer point supervision obj.ct detection

Grading of.products utilizing bamboo as a substitute f.r plastic based on environmental ef.ects

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Science China Earth Sciences 2024年第9期67卷 2989-2998页

作者： Meng ZHANG guomo ZHOU Lei gu Wenshuo WANG College of.f.restry Beijing Forestry UniversityBeijing 100083China Key Laboratory of.Carbon Cycling in f.rest Ecosystems and Carbon Sequestration of.Zhej.ang Province Zhejiang A&F UniversityHangzhou 311300China

To achieve sustainable development goals,mitigate plastic pollution,and promote eco-f.iendly products,it is crucial to identif. key products in the bamboo as a substitute f.r plastic(BSP)industry and assess their environmental *** study proposed a novel evaluation method f.r the environmental ef.ect of.bamboo as a substitute f.r plastic(EBSP).It f.cused on the contributions of.BSP products in reducing plastic pollution and greenhouse gas *** established a set of.EBSP evaluation indicators and developed a grading model,evaluating 30 typical BSP products across six *** results showed that the EBSP evaluation model,based on the emission reduction rate of.substitution(ERRS),substitution rate of.material(SRM),and product renewal ratio(PRR),can accurately quantif. the environmental benef.ts of.BSP *** model has successf.lly f.cilitated precise quantif.cation of.the EBSP and established a rational and ef.ective grading system f.r BSP *** results also demonstrated that the average EBSP ranking across the six categories of.BSP products,in descending order,is:disposable bamboo products,bamboo household goods,bamboo packaging products,bamboo engineering materials,bamboo f.rniture products,and bamboo craf. ***,disposable bamboo products scored an EBSP 1.96 times the overall average,indicating signif.cant environmental *** PRR emerged as a critical f.ctor inf.uencing *** BSP products with the same lif.span,those with higher substitution emission reduction ef.iciency of.ered more pronounced environmental ***,the BSP industry should strategically prioritize disposable bamboo products,such as bamboo toothbrushes,cutlery,and lunch *** products should be the primary f.cus of.policy support and central to ef.orts in product development,design innovation,and market promotion.

关键词： Bamboo as a substitute f.r plastic Bamboo products Substitution emission reduction Environmental benef.ts Gradingevaluation

miniSCIDOM: a scintillator-based tomograph f.r volumetric dose reconstruction of.single laser-driven proton bunches

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High Power Laser Science and Engineering 2024年第2期12卷 41-50页

作者： A.Corvino M.Reimold E.Beyreuther f.-E.Brack f.Kroll j.Pawelke j.D.Schilz M.Schneider U.Schramm M.E.P.Umlandt K.Zeil T.Ziegler j.Metzkes-Ng Helmholtz-Zentrum Dresden–Rossendorf DresdenGermany Technische Universität Dresden DresdenGermany OncoRay–National Center f.r Radiation Research in Oncology Faculty of Medicine and University Hospital Carl Gustav CarusTUD Dresden University of TechnologyHelmholtz-Zentrum Dresden–RossendorfDresdenGermany Current af.iliation:Institut Curie UniversitéPSLCNRS UMR3347OrsayFrance Current af.iliation:Universitätsklinikum f.eiburg FreiburgGermany

Laser plasma accelerators(LPAs)enable the generation of.intense and short proton bunches on a micrometre scale,thus of.ering new experimental capabilities to research f.elds such as ultra-high dose rate radiobiology or material *** spectrally broadband,laser-accelerated proton bunches allow f.r tailored volumetric dose deposition in a sample via single bunches to excite or probe specif.c sample *** rising number of.such experiments indicates a need f.r diagnostics providing spatially resolved characterization of.dose distributions with volumes of.approximately 1 cm^(3) f.r single proton bunches to allow f.r f.st online *** we present the scintillator-based miniSCIDOM detector f.r online single-bunch tomographic reconstruction of.dose distributions in volumes of.up to approximately 1 cm^(3).The detector achieves a spatial resolution below 500μm and a sensitivity of.100 *** detector perf.rmance is tested at a proton therapy cyclotron and an LPA proton *** experiments’primary f.cus is the characterization of.the scintillator’s ionization quenching behaviour.

关键词： beam monitoring detectors laser-driven proton beams scintillator-based diagnostics ultra-high dose rate

Cell Consistency Evaluation Method Based on Multiple Unsupervised Learning Algorithms

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Big Data Mining and Analytics 2024年第1期7卷 42-54页

作者： j.ang Chang Xianglong gu j.eyun Wu Debu Zhang Stellantis China Technology Center Shanghai 200233China

Unsupervised learning algorithms can ef.ectively solve sample *** address battery consistency anomalies in new energy vehicles,we adopt a variety of.unsupervised learning algorithms to evaluate and predict the battery consistency of.three vehicles using charging f.agment data f.om actual operating *** extract battery-related f.atures,such as the mean of.maximum dif.erence,standard deviation,and entropy of.batteries and then apply principal component analysis to reduce the dimensionality and record the amount of.preserved *** then build models through a collection of.unsupervised learning algorithms f.r the anomaly detection of.cell consistency *** also determine whether unsupervised and supervised learning algorithms can address the battery consistency problem and document the parameter tuning *** addition,we compare the prediction ef.ectiveness of.charging and discharging f.atures modeled individually and in combination,determine the choice of.charging and discharging f.atures to be modeled in combination,and visualize the multidimensional data f.r f.ult *** results show that the unsupervised learning algorithm is ef.ective in visualizing and predicting vehicle core conf.rmance f.ults,and can accurately predict f.ults in real ***“distance+boxplot”algorithm shows the best perf.rmance with a prediction accuracy of.80%,a recall rate of.100%,and an f. of.*** proposed approach can be applied to monitor battery consistency f.ults in real time and reduce the possibility of.disasters arising f.om consistency f.ults.

关键词： battery consistency charging segment data unsupervised learning

Structural energy storage composites based on modif.ed carbon f.ber electrode with metal-organic f.ame enhancing layered double hydroxide

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Nano Research 2024年第3期17卷 1552-1563页

作者： j.nrui Ye Zhongbao Wang Qin Lei Lei Sun j.nf.ng gu School of.Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Tangshan Research Institute Beijing Institute of TechnologyTangshan 063000China School of.Materials Science and Engineering Shenyang Jianzhu UniversityShenyang 110168China Department of.Stomatology PLA Strategic Support Force Characteristic Medical CenterBeijing 100101China Beij.ng Electromechanical Engineering Research Institute Beijing 100074China

Structural energy storage composites present advantages in simultaneously achieving structural strength and electrochemical *** of.carbon f.ber electrodes and resin structural electrolytes in energy storage composite poses challenges in maintaining good mechanical and electrochemical properties at reasonable cost and ***,we report a simple method to f.bricate structural supercapacitor using carbon f.ber electrodes(modif.ed by Ni-layered double hydroxide(Ni-LDH)and in-situ growth of.Co-metal-organic f.amework(Co-MOf.in a two-step process denoted as Co-MOf.Ni-LDH@Cf.and bicontinuous-phase epoxy resin-based structural ***-MOf.Ni-LDH@Cf.as electrode material exhibits improved specif.c capacity(42.45 f.g^(-1))and cycle perf.rmance(93.3%capacity retention af.er 1000 cycles)in a three-electrode *** bicontinuous-phase epoxy resin-based structural electrolyte exhibits an ionic conductivity of.3.27×10^(-4) S·cm^(-1).The f.bricated Co-MOf.Ni-LDH@Cf.SPE-50 structural supercapacitor has an energy density of.3.21 Wh·kg^(-1) at a power density of.42.25 W·kg^(-1),whilst maintaining tensile strength and modulus of.334.6 MPa and 25.2 *** results show practical potential of.employing modif.ed commercial carbon f.ber electrodes and epoxy resin-based structural electrolytes in structural energy storage applications.

关键词： carbon f.ber electrode structural electrolyte structural energy storage composites supercapacitor

Metal–Organic f.amework‑Based Photodetectors

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Nano-Micro Letters 2024年第11期16卷 675-703页

作者： j.n‑Biao Zhang Yi‑Bo Tian Zhi‑Gang gu j.an Zhang State Key Laboratory of.Structural Chemistry Structure of MatterFujian Institute of ResearchChinese Academy of SciencesFuzhouFujian 350002People’s Republic of China College of.Chemistry and Materials Science Fujian Nornal UniversityFuzhou 350007FujianPeople’s Republic of China f.j.an Science&Technology Innovation Laboratory f.r Optoelectronic Inf.rmation of.China Fuzhou 350108FujianPeople’s Republic of China University of.Chinese Academy of.Science Beijing 100049People’s Republic of China

The unique and interesting physical and chemical properties of.metal–organic f.amework(MOf.materials have recently attracted extensive attention in a new generation of.photoelectric *** this review,we summarized and discussed the research progress on MOf.based *** methods of.preparing MOf.based photodetectors and various types of.MOf.single crystals and thin f.lm as well as MOf.composites are introduced in ***,the photodetectors applications f.r X-ray,ultraviolet and inf.ared light,biological detectors,and circularly polarized light photodetectors are ***,summaries and challenges are provided f.r this important research f.eld.

关键词： Metal-organic f.ameworks Semiconductor Photodetectors