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MULTIFRACTAL ANALYSIS OF PARTICLE-FLUID SYSTEM IN A CIRCULATING FLUIDIZED BED

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Particuology 2005年第Z1期 80-83+6页

作者： Liping Ma, Weixing Huang, Yanfu Shi, Huarui Yu and Jingxu Zhu Department of Chemical Engineering, Sichuan university, Chengdu 610065, P. R, China Department of Chemical & Biochemical Engineering, the university of Western Ontario, canada N6A 5B9

In this paper, multifractal analysis together with wavelet transform modulus maxima (WTMM) method is used to analyze the fluctuating signals of circulating fluidized bed (CFB). Singularity spectrum shows that the gas-particle flow in CFB has multifractal character. Motion behavior of the particle-fluid system of CFB can be described by singularity spectrum. Intermittency index can be used to determine the transition of flow regime from fast fluidization to pneumatic conveying.

关键词： multifractal analysis wavelet transform singularity spectrum intermittency index circulating fluidized bed

Detonation nanodiamond and its applications:A case from China

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金刚石与磨料磨具工程 2008年第S1期28卷 44-49页

作者： Annie Hui~1,Wang Guangzu~2 (1.Carleton university,canada KAL Superabrasives Co.,Ltd,canada) (2.Zhengzhou Research Institute for Abrasives and Grinding,Zhengzhou 450013,China)

Nanodiamond is a new material which has the dual properties of diamond and *** dual properties have contributed to its wide applications in many industrial *** paper briefly reviews the development of nanodiamond,describes its synthesis technology under dynamic high-temperature and high-pressure conditions,and introduces its properties as well as *** are made about nanodiamond’ s potentially successful applications in the future.

关键词： Explosion Detonation Nanodiamond

General Compartmental Epidemic Models

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Chinese Annals of Mathematics,Series B 2010年第3期31卷 289-304页

作者： Fred BRAUER Department of Mathematics University of British Columbia

The age of infection approach introduced by Kermack and Mckendrick in 1927 gives a unified way of describing and analyzing a variety of epidemic models, including models with multiple stages, treatment, and heterogeneous mixing. The author gives a description of the main results for such models, emphasizing the use of the final size relation to estimate the size of the epidemic.

关键词： Epidemic models Treatment models Basic reproduction number Final size relation

Thermal Flexure Measurement and Inverse Characterization for a Tri-layer Thin Plate

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实验力学 2011年第5期26卷 540-555页

作者： Alireza Shirazi Ahmad Varvani-Farahani Department of Mechanical and Industrial Engineering Ryerson University

The paper presents a new study on a tri-layer thin *** moiré implemented with an advanced phase unwrapping technique is employed to obtain actual flexural deformation of a real-life plate sample subjected to thermal *** analytical model is re-formulated to provide the plate with global closed-form solutions of the plate deflection as well as the interfacial stress and *** the measurements and the solutions available,an inverse iterative approach is developed to evaluate and maximize the correlation between the measured and the predicted thermal flexure,leading to ascertained materials' constitutive and thermal *** inverse search algorithm starts with estimated ranges of material property parameters and progressively updates them to finally approach the respective true *** established model solutions along with the optimized material properties matrix enable an accurate evaluation of the interfacial stresses/strains for the specific plate sample.

关键词：英文摘要内容介绍编辑工作期刊

Novel delay-distribution-dependent stability analysis for continuous-time recurrent neural networks with stochastic delay

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Chinese Physics B 2012年第12期21卷 161-167页

作者：王申全冯健赵青 College of Information Science and Engineering Northeastern University Department of Electrical and Computer Engineering University of Alberta

In this paper, the problem of delay-distribution-dependent stability is investigated for continuous-time recurrent neural networks （CRNNs） with stochastic delay. Different from the common assumptions on time delays, it is assumed that the probability distribution of the delay taking values in some intervals is known a priori. By making full use of the information concerning the probability distribution of the delay and by using a tighter bounding technique （the reciprocally convex combination method）, less conservative asymptotic mean-square stable sufficient conditions are derived in terms of linear matrix inequalities （LMIs）. Two numerical examples show that our results are better than the existing ones.

关键词： recurrent neural networks stochastic delay mean-square stability linear matrix inequal- ity

A　Blind　Equalizer　Based　on　Unsupervised　Gaussian　Cluster　Formation　with　an　Adaptive　Non-Linearit

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通信学报 1997年第3期18卷 19-26页

作者： Liu Hanyu (Dept of Electrical and Computer Engineering university of Manitoba Winnipeg, MB,canada R3T 2N2) Tong Wen E I Plotkin (Dept of Electrical and Computer Engineering Concordia university Montreal, QUE, canada H3G 1M8)

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关键词： Cluster

Study on the alkylation reaction of guanine and N-acetylguanine and the synthesis of 1'-C alkylated carba-DHPG analogues

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Chinese Journal of Chemistry 1994年第1期12卷 85-94页

作者： LIU, Yu-Gang FEI, Chang-PeiInstitute of Chemistry, Chinese Academy of Sciences, Beijing 100080, ChinaCHAN, Tak-HangDepartment of Chemistry, McGill university, Montreal, PQ, canada H3A 2K6 Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Department of Chemistry McGill University Montreal PQ Canada H3A 2K6

The alkylation reaction of guanine and N-acetylguanine with model compounds such as isopropyl bromide or 4-heptyl tosylate were studied. The reaction conditions such as temperature, solvent, base, and catalyst were examined for their effects on the reaction rate, and the yield and regioselectivity of the coupling reaction. The highest yield was obtained by using DMSO as the solvent. The reaction proceeded in a homogenous manner to give higher yield of 9-N and 7-N substituted product in a mole ratio of 1:1. The ratio could be raised to 2:1 if dibenzo-18-crown-6 was used as a catalyst. Using the above procedure, three carba-DHPG analogues bearing different 1'-C alkyl side chains were synthesized.

关键词： Acyclonucleoside alkylation N-acetylguanine carba-DHPG.

Mineralogical Zonation of Wall-Rock Alteration in Jiaodong Gold Province, North China

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Journal of Earth Science 1999年第1期18卷 20-24页

作者： Chen Guangyuan Sun Daisheng Shao Wei Li Shengrong Division of Genetic Mineralogy, China university of Geosciences, Beijing 100083 Fyfe S. William Department of Earth Sciences, university of Western Ontario, London, Ontario, canada, N6A 5B7 Chen

Mineralogical zonation of wall rock alterations in Mesozoic granitoids is summarized from 18 gold deposits in Jiaodong gold province on the Asian mobile continental margin of the west circum Pacific rim. This paper deals with wall rock alterations developed around gold mineralizations of the quartz vein type in granitoids and the wall rock alteration type in granitoid basement contacts along Mesozoic fault zones trending mostly NNE SSW and NE SW. Five alteration zones are distinguished from host rock to ore zone, namely the chloritization and sericitization zone, the hematitization rutilization and microclinization zone, the quartz sericitization zone, the pyrite quartz sericitization zone and the pyrite silicification zone. The former two are outer zones marked by incomplete alteration of first mafic and then felsic minerals of the granitoids, while the later three are inner zones marked by complete alteration of both mafic and felsic minerals of the granitoids leading to retrogressive sericitization and progressive silicification with participation of ore elements. The whole process proceeds under dynamometamorphism with high fugacity of volatiles. Wall rock alteration is the intermediate link between unaltered host rock and ore mineralization both in time and space. Development of the alteration zonation and its mineral composition controls genetic type of mineralization, size and grade of the deposit and location of the ore zones.

关键词： gold province wall rock alteration zonation mineralogy Jiaodong.

Stationary Classical Chaos of Trapped Two-Component Bose-Einstein Condensates in 1-D Optical Lattice Potentials

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Communications in Theoretical Physics 2007年第7期48卷 125-131页

作者： FANG Jian-Shu LIU Wing-Ki ZHU Shan-Hua1 Institute of Physics,Hunan university of Technology,Zhuzhou 412008,China2 Department of Physics,Hunan Normal university,Changsha 410081,China3 Department of Physics,university of Waterloo,Waterloo,Ontario,canada N2L 3G1 Institute of Physics Hunan University of Technology Zhuzhou 412008 China Department of Physics Hunan Normal University Changsha 410081 China Department of Physics University of Waterloo Waterloo Ontario Canada N2L 3G1

We study the nonlinear dynamics of two-component Bose-Einstein condensates in one-dimensional pe-riodic optical lattice *** stationary state perturbation solutions of the coupled two-component nonlinearSchr?dinger/Gross-Pitaevskii equations are constructed by using the direct perturbation *** analysisrevels that the perturbation solution is the chaotic one,which indicates the existence of chaos and chaotic region inparameter *** corresponding numerical calculation results agree well with the analytical *** applying thechaotic perturbation solution,we demonstrate the atomic spatial population and the energy distribution of the systemare chaotic generally.

关键词： stationary state classical chaos two-component Bose-Einstein condensates optical lattice potential