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Non-isothermal deco.position kinetics and lifetime of Tb2(0-MBA)6(PHEN)2

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Rare Metals 2003年第3期22卷 155-159页

作者： ZHANGJianjun BAIJihai WANGRuifen WANGShuping LIJibiao ExperimentalCenter NormalUniversityShijiazhuang050016China departmentofco.puter HebeiNormalCollegeofScienceandTechnologyChangli066600China departmentofChemistry HebeiNormalUniversityShijiazhuang050091China

The thermal deco.position of Tb_2(O-MBA)_6(PHEN)_2 (O-MBA: o-methylbenzoate;PHEN: 1,10-phenanthroline) and its kinetics were studied under the non-isothermal co.dition bythermogravimetry-derivative thermogravimetry (TG-DTG) techniques. Kinetic parameters were obtainedfrom analysis of TG-DTG curves by the Achar method and the Madhusudanan-Krishnan-Ninan (MKN) *** most probable mechanism function was suggested by co.paring the kinetic parameters. The kineticequation for the first stage can be expressed as dα/dt = Aexp(-E/RT)·3(1 - α)^(2/3). Thelifetime equation at mass loss of 10% was deduced as lnτ= -28.7429 + 19797.795/T by isothermalthermogravimetric analysis.

关键词： thermochimica non-isothermal kinetics TG-DTG terbium co.plex O-methylbenzoate 1,10-phenanthroline

Improvement of Lithium Interface Stability with 1,4-dioxane Pretreatment

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Journal of Wuhan University of technology(Materials science) 2007年第3期22卷 494-498页

作者：丁飞 department of Applied Chemistry Harbin Institute of Technology

1,4-dioxane （DOA） was originally used to pretreat the lithium metal electrode in order to improve its interface stability. Electrochemical impedance spectra （EIS） measurements reveal that with DOA pretreatment, lithium electrode has a low and stable interfacial resistance during the storage in electrolyte for a long time. And it is also found that the pretreated lithium electrode has an improved interfacial performance in repeated charge/discharge cycles. Furthermore, it is proved by SEM that the pretreated one has smooth morphology after long-time storage or repeated charge/discharge cycles. co.sequentially, because of more stable interface characteristics of lithium electrode, the rechargeable lithium cell with DOA pretreated lithium anode has an obviously enhanced discharging performance and a better cycleability, co.pared with that of the cell using the untreated lithium anode.

关键词： lithium battery interface film stability 1,4-dioxane pretreatment EIS

1,3-dioxolane pretreatment to improve the interfacial characteristics of a lithium anode

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Rare Metals 2006年第4期25卷 297-302页

作者： DING Fei LIU Yuwen HU Xinguo department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Research Centre JJJ Battery Co. Lid. Jiangmen 529000 China

1,3-dioxolane （DOL） was originally used to pretreat a lithium metal electrode to improve its interfacial characteristics. Electrochemical impedance spectra （EIS） meastLrements revealed that, after the DOL pretreatment, the lithium electrode had better interfacial stability during immersion in electrolyte and as repeated charge/discharge cycles. It was proved by SEaM that the pretreated one has smoother morphology and less dendrite after repeated charge/discharge cycles. co.sequentially, benefiting from the better interface characteristics of the lithium electrode, the rechargeable lithium cell with a DOL-pretreated lithium anode had the obviously enhanced discharging performance and better cyclability.

关键词： lithium battery interfacial stability 1,3-dioxolane pretreatment EIS

An improved approach to the efficient co.struction of and search operations in motion graphs

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science china(Information sciences) 2012年第5期55卷 1042-1051页

作者： GAO Yan 1,CHEN ZhiHua 2,CHEN MinGang 3 & SHEN Yang 3 1 Software Engineering Institute,East china Normal University,Shanghai 200062,china 2 department of co.puter science and Engineering,East china University of science and technology,Shanghai 200237,china 3 department of co.puter science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,china 1. Software Engineering Institute East China Normal University Shanghai 200062 China2. Department of Computer Science and Engineering East China University of Science and Technology Shanghai 200237 China3. Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

Motion graphs have been widely used as an effective technique in the synthesis of human *** synthesize well-formed motions,motion graphs require smooth transitions and good ***,the time and co.ts grow quadratically as the graph size *** this paper,we present a method to set up a hierarchical structure,called a structure *** co.rse level of this graph models different motion categories and their transitions,and the fine level mainly captures different motion *** interpolation space method is used to improve the graph co.nectivity at the fine *** structure guides the establishment of a faster and more realistic graphical *** the building process,this structure also helps with searching the motion graph,by performing a traverse search and placing the findings into a direct look-up table or local search ***,when there is no direct link between the different motions,a navigation map is introduced to co.duct an appropriate search path via a series of transition motion *** experimental results indicate that our approach co.ld lower the co.putation time in co.struction and searching,while simultaneously providing a richer variety of motion styles.

关键词： motion graph structure table registration curve motion interpolation

Fusion tracking in co.or and infrared images using joint sparse representation

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science china(Information sciences) 2012年第3期55卷 590-599页

作者： LIU HuaPing1,2,3 & SUN FuChun1,2,3 1department of co.puter science and technology, Tsinghua University, Beijing 100084, china 2State Key Laboratory of Intelligent technology and Systems, Beijing 100084, china 3Tsinghua National Laboratory for Information science and technology, Beijing 100084, china 1. department of co.puter science and technology Tsinghua University Beijing 100084 China2. State Key Laboratory of Intelligent Technology and Systems Beijing 100084 China3. Tsinghua National Laboratory for Information Science and Technology Beijing 100084 China

Currently sparse signal reco.struction gains co.siderable interest and is applied in many fields. In this paper, a similarity induced by joint sparse representation is designed to co.struct the likelihood function of particle filter tracker so that the co.or visual spectrum and thermal spectrum images can be fused for object tracking. The proposed fusion scheme performs joint sparse representation calculation on both modalities and the resultant tracking results are fused using min operation on the sparse representation co.fficients. In addition, a co.learning approach is proposed to update the reference templates of both modality and enhance the tracking robustness. The proposed fusion scheme outperforms state-of-the-art approaches, and its effectiveness is verified using OTCBVS database.

关键词： joint sparse representation fusion tracking co.or image infrared image

Motion behavior of particles in air-solid magnetically stabilized fluidized beds for separation

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International Journal of Mining science and technology 2012年第5期22卷 725-729页

作者： Song Shulei a,,Zhao Yuemin a,Luo Zhenfu a,Tang Ligang b a School of Chemical Engineering and technology,china University of Mining & technology,Xuzhou 221116,china b co.l Mining and Designing department,Tiandi science & technology co.pany co.ltd.,Beijing 100013,china [a] School of Chemical Engineering and technology China University of Mining & Technology Xuzhou 221116 China [b] co.l Mining and Designing department Tiandi Science & Technology Company Co. Ltd. Beijing 100013 China

In order to study the settling mechanism of particles in an air-solid magnetically stabilized fluidized bed(MSFB) for separation,we carried out free settling and quasi-zero settling tests on the tracing *** results show that the main resistance forces as the tracing particles settled in an air-solid MSFB were motion resistance force and yield *** motion resistance and yield forces greatly hindered the free settling of the particles by greatly decreasing the acceleration for settling process of the *** acceleration decreased from 3022.62 cm/s 2 to zero in 0.1 s,and in the end,the particles stopped in the air-solid *** yield force on particles increased with increasing the magnetic field intensity,resulting in decrease of the quasi-zero settling ***,the yield force on particles decreased with increasing the fluidized air velocity,leading to increase of the quasi-zero settling *** the structure and operating parameters of the air-solid MSFB were set up,the yield stress on particles stopped in an air-solid MSFB was a function of diameter and density of *** settling displacements of equal diameter particles increased with increasing their densities,and the settling displacements of equal density particles increased with increasing their diameters.

关键词： Air-solid MSFB Free settling Quasi-zero velocity settling Motion of particles

Effect of Initial Microstructure on Warm Deformation Behavior of 45 Steel

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Journal of Iron and Steel Research International 2012年第8期19卷 75-78页

作者： ZHAO Xin1, YANG Xiao-ling2, JING Tian-fu3 (1. The Sixth department, Zhengzhou Institute of Aeronautics, Zhengzhou 450015, Henan, china 2. Zhengzhou Zhongxing Basic co.structions Development co.ltd. Zhengzhou 450015, Henan, china 3. State Key Laboratory of Metastable Materials science and technology, Qinhuangdao 066004, Hebei, china) [a] The Sixth department Zhengzhou Institute of Aeronautics Zhengzhou 450015 Henan China [b] Zhengzhou Zhongxing Basic co.structions Development co.ltd Zhengzhou 450015 Henan China [c] State Key Laboratory of Metastable Materials science and technology Qinhuangdao 066004 Hebei China

In order to investigate the effect of initial microstructure on warm deformation behavior, some specimens of 45 steel were annealed and some quenched. Then the specimens were isothermally co.pressed on a Gleeble 3500 machine. The deformation temperature range was 550 to 700 ℃ and the strain rate range was 0.001 to 0.1 s-1. An optical microsco.e (OM) and a transmission electron microsco.e (TEM) were used to study the microstructures. The results show that the microstructure of annealed specimens is ferrite and pearlite and that of quenched specimens is martensite. The flow stress of quenched specimens is higher than that of annealed ones at 550 ℃ when strain rates are greater than 0.001 s-1. However, at 600 to 700 ℃ and strain rate of 0.001 s-1, the whole flow curves of quenched specimens are below that of annealed ones. Under the rest co.ditions, the flow stress of quenched specimens is higher at the beginning of co.pression and then the opposite is true after the strain is greater than a critical value. The microstructure examination proves that the tempering and dynamic recrystallization easily occur in the specimens with martensite during warm co.pression, which results in the above phenomena.

关键词： warm deformation flow stress steel microstructure

Hamiltonian type Lie bialgebras

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science china Mathematics 2007年第9期50卷 1267-1279页

作者： Bin XIN~(1+) Guang-ai SONG~2 Yu-cai SU~3 1 department of Mathematics,Shanghai Jiao Tong University,Shanghai 200240,china 2 co.lege of Mathematics and Information science,Shandong Institute of Business and technology,Yantai 264005,china 3 department of Mathematics,University of science and technology of china,Hefei 230026,china department of Mathematics Shanghai Jiao Tong University Shanghai 200240 China co.lege of Mathematics Information science Shandong Institute of Business technology Yantai 264005 China department of Mathematics University of Science technology of china Hefei 230026 China

We first prove that,for any generalized Hamiltonian type Lie algebra H,the first co. homology group H^1(H,H(?)H) is *** then show that all Lie bialgebra structures on H are triangular.

关键词： Lie bialgebra Yang-Baxter equation Hamiltonian Lie algebra 17B62 17B05 17B37 17B66

Epithermal Ageing Mechanism of Gussasphalt

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Journal of Wuhan University of technology(Materials science) 2009年第3期24卷 466-470页

作者：郝增恒 School of Traffic science and Engineering Harbin Institute of Technology Chongqing co.munications Research and Design Instituts

The normal asphalt index test, DSR test, FTIR and the GPC distribution analysis of molecular weight on the extraction and reco.ery of asphalt of the gussasphalt, SMA extraction and reco.ery of asphalt and the rotary-thin-film-oven-aged asphalt above 240 ℃ were introduced. The results indicate the rutting factor and fatigue factor of the extraction and reco.ery of asphalt of the gussasphalt are greatly improved, and an obvious absorption peak of carbonyl and a further decrease of the SBS molecular weight of the gussasphalt are found.

关键词： gussasphalt epithermal ageing rheolagical performance fourier transforms infrared spectrosco.y gel permeation chromatography