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| 1 | MICROSTRUCTURE AND PROPERTY OF Al/TiC COMPOSITES PREPARED BY REACTION SYNTHESIS显示文摘A novel in-situ process-Reaction Synthesis has been used to fabricate Al/TiC compos-ites,the phase constitute,microstructure and mechanical property of the Al/TiC composite have been investigated by the use of XRD and SEM.It has been shown that the reaction synthesized TiC particu-late is submicron in size(about 0.1~0.8μpm),spherical in shape and smooth in surface.In macrostruc-ture the distribution of the TiC particulate in matrix is homogeneous,but in micostructure there is micro-segregation of the TiC particulate at the intergrannular.The cast structure become fine because of the existence of the TiC particulate.In addition«with the increasing of weight percentage of TiC partic-ulate in alloy,the yield strength and ultimate tensile strength of the composite increase significantly«e.g.at 15%TiC,117% and 103% increase respectively,in the same time the elongation of the composite is still more than 4.5%.In the end,the analysis has been done by SEM on the fracture morphology of the composite.The results show that the fracture is ductility,and mainly because of the cluster of TiC particulate to intergrannular and the synthesis of bar morphology Al_(3)Ti. | Zhang Erlin Zeng Xiaochun Zeng Songyan Li Qingchun | 1996 | Transactions of Nonferrous Metals Society of China1996，6，1： | 3 |
| 2 | Mathematical models for foam-diverted acidizing and their applications显示文摘Foam diversion can effectively solve the problem of uneven distribution of acid in layers of different permeabilities during matrix acidizing.Based on gas trapping theory and the mass conservation equation,mathematical models were developed for foam-diverted acidizing,which can be achieved by a foam slug followed by acid injection or by continuous injection of foamed acid.The design method for foam-diverted acidizing was also given.The mathematical models were solved by a computer program.Computed results show that the total formation skin factor,wellhead pressure and bottomhole pressure increase with foam injection,but decrease with acid injection.Volume flow rate in a high-permeability layer decreases,while that in a low-permeability layer increases,thus diverting acid to the low-permeability layer from the high-permeability layer.Under the same formation conditions,for foamed acid treatment the operation was longer,and wellhead and bottomhole pressures are higher.Field application shows that foam slug can effectively block high permeability layers,and improve intake profile noticeably. | Li Songyan Li Zhaomin Lin Riyi | 2008 | Petroleum Science2008，5，2： | 3 |
| 3 | FORMATION MECHANISM OF TiC IN Al/TiC COMPOSITES PREPARED BY DIRECT REACTION SYNTHESIS显示文摘FORMATIONMECHANISMOFTiCINAl/TiCCOMPOSITESPREPAREDBYDIRECTREACTIONSYNTHESIS①ZhangErlin,YangBo,ZengSongyanandLiQingchunNational... | Zhang, Erlin Bo, Yang Zeng, Songyan Li, Qingchun Ma, Mingzhen | 1998 | 中国有色金属学会会刊:英文版1998，8，1： | 3 |
| 4 | Dynamic simulation and safety evaluation of high-speed trains meeting in open air显示文摘Dynamic responses of a carriage under excitation with the German high-speed low-interference track spectrum together with the air pressure pulse generated as high-speed trains passing each other are investigated with a multi-body dynamics method.The variations of degrees of freedom(DOFs:horizontal movement,roll angle,and yaw angle),the lateral wheel-rail force,the derailment coefficient and the rate of wheel load reduction with time when two carriages meet in open air are obtained and compared with the results of a single train travelling at specifie speeds.Results show that the rate of wheel load reduction increases with the increase of train speed and meets some safety standard at a certain speed,but exceeding the value of the rate of wheel load reduction does not necessarily mean derailment.The evaluation standard of the rate of wheel load reduction is somewhat conservative and may be loosened.The pressure pulse has significan effects on the train DOFs,and the evaluations of these safety indexes are strongly suggested in practice.The pressure pulse has a limited effect on the derailment coefficien and the lateral wheel-rail force,and,thus,their further evaluations may be not necessary. | Songyan Li Zhijun Zheng Jilin Yu Chunqiang Qian | 2016 | Acta Mechanica Sinica2016，32，2： | 3 |
| 5 | On the source of the quasi-Carrington Rotation periodic magnetic variations on the Martian surface: InSight observations and modeling显示文摘In a recent paper(Luo H et al.,2022),we found that the peak amplitudes of diurnal magnetic variations,measured during martian days(sols)at the InSight landing site,exhibited quasi Carrington-Rotation(qCR)periods at higher eigenmodes of the natural orthogonal components(NOC);these results were based on~664 sols of magnetic field measurements.However,the source of these periodic variations is still unknown.In this paper we introduce the neutral-wind driven ionospheric dynamo current model(e.g.,Lillis et al.,2019)to investigate the source.Four candidates-the draped IMF,electron density/plasma density,the neutral densities,and the electron temperature in the ionosphere with artificial qCR periodicity,are applied in the modeling to find the main factor likely to be causing the observed surface magnetic field variations that exhibit the same qCR periods.Results show that the electron density/plasma density,which controls the total conductivity in the dynamo region,appears to account for the greatest part of the surface qCR variations;its contribution reaches about 67.6%.The draped IMF,the neutral densities,and the electron temperature account,respectively,for only about 12.9%,10.3%,and 9.2%of the variations.Our study implies that the qCR magnetic variations on the Martian surface are due primarily to variations of the dynamo currents caused by the electron density variations.We suggest also that the timevarying fields with the qCR period could be used to probe the Martian interior's electrical conductivity structure to a depth of at least 700 km. | Hao Luo AiMin Du ShaoHua Zhang YaSong Ge Ying Zhang ShuQuan Sun Lin Zhao Lin Tian SongYan Li | 2022 | Earth and Planetary Physics2022，6，3： | 2 |
| 6 | Utilization of sudae- tant-stabilized foam for enhaneed oil recovery by adding nanopartieles 显示文摘 | SUN Qian LI Zhaomin LI Songyan | 2014 | Energy Fuels2014，28，4： | 1 |
| 7 | To Learn or Not to Learn:Deep Learning Assisted Wireless Modem Design显示文摘Deep learning is driving a radical paradigm shift in wireless communications,all the way from the application layer down to the physical layer.Despite this,there is an ongoing debate as to what additional values artificial intelligence(or machine learning)could bring to us,particularly on the physical layer design;and what penalties there may have?These questions motivate a fundamental rethinking of the wireless modem design in the artificial intelli gence era.Through several physicallayer case studies,we argue for a significant role that machine learning could play,for instance in parallel errorcontrol coding and decoding,channel equalization,interference cancellation,as well as multiuser and multiantenna detection.In addition,we discuss the fundamental bottlenecks of machine learning as well as their potential solutions in this paper. | XUE Songyan LI Ang WANG Jinfei YI Na MA Yi Rahim TAFAZOLLI Terence DODGSON | 2019 | ZTE Communications2019，17，4： | 1 |
| 8 | Oil displace- ment performance of stabilized foam systemby SiO2 nanop- articles 显示文摘 | SUN Qian LI Zhaomin LI Songyan | 2014 | Journal of China University of Petroleum ( E- dition of Natural Science)2014，38，4： | 1 |
| 9 | A nitrogen foam fluid with low formation damage for CBM fracturing treatment显示文摘 | LI Zhaomin LI LI Songyan | 2013 | Journal of China University of Petroleum ( Edition of Natural Science)2013，37，5： | 1 |
| 10 | Preparation, microstructure and mechanical properties of porous titanium sintered by Ti fibres显示文摘 | Chunming Zou Erlin Zhang Mingwei Li Songyan Zeng | 2008 | Journal of Materials Science: Materials in Medicine2008，，1： | 1 |
| 11 | A study on the kinetic process of reaction synthesis of TiC: Part I. Experimental research and theoretical model显示文摘 | Erlin Zhang Songyan Zeng Qingchun Li Yang Bo Mingzhen Ma | 1999 | Metallurgical and Materials Transactions A1999，，4： | 1 |
| 12 | PHASE CONSTITUTE AND MICROGRAPHY OF REACTION SYNTHESIS OF Al+Ti+C SYSTEM显示文摘PHASECONSTITUTEANDMICROGRAPHYOFREACTIONSYNTHESISOFAl+Ti+CSYSTEM￥ZHANGErlin;ZENGSongyan;ZENGXiaochun;LIQingchun(Harbininstitut... | ZHANG Erlin ZENG Songyan ZENG Xiaochun LI Qingchun(Harbin institute of Technology,Harbin,China | 1995 | Acta Metallurgica Sinica(English Letters)1995，8，2： | 1 |
| 13 | Identification of differentially expressed genes response to TCDD in rat brain after long-term low-dose exposure显示文摘Several cohort studies have reported that dioxin and dioxin-like polychlorinated biphenyls might impair the nervous system and lead to neurological or neurodegenerative diseases in the elder people, but there is limited research on the involved mechanism. By using microarray analysis, we figured out the differentially expressed genes between brain samples from SD rats after low-dose(0.1 μg/(kg?bw)) dioxin exposure for six months and controls. To investigate the function changes in the course of dioxin exposure, Gene Ontology(GO) annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway analysis were performed on the differentially expressed genes. And the changes of several picked genes have been verified by real-time PCR. A total of 145 up-regulated and 64 down-regulated genes were identified. The metabolic processes, interleukin-1 secretion and production were significantly associated with the differentially expressed genes. And the genes regulated by dioxin also clustered to cholinergic synapse and long-term potentiation. Candidate biomarker genes such as egr1, gad2, gabrb3, abca1, ccr5 and pycard may be toxicological targets for dioxin. Furthermore, synaptic plasticity and neuro-immune system may be two principal affected areas by dioxin. | Yangsheng Chen Li Xu Heidi Q.H.Xie Tuan Xu Hualing Fu Songyan Zhang Rui Sha Yingjie Xia Bin Zhao | 2017 | Journal of Environmental Sciences2017，29，12： | 1 |
| 14 | Accurate determination of the CO2-brine interfacial tension using graphical alternating conditional expectation显示文摘 | LI Zhaomin WANG Shuhua LI Songyan | 2014 | Energy&Fuels2014，28，1： | 1 |
| 15 | A study on the kinetic process of reaction synthesis of TiC: Part I. Experimental research and theoretical model显示文摘 | Erlin Zhang Songyan Zeng Qingchun Li Yang Bo Mingzhen Ma | 1999 | Metallurgical and Materials Transactions A1999，，4： | 1 |
| 16 | Performances of dif- ferent recovery methods for orinoco belt heavy oil after solu- tion gas drive显示文摘 | Lu Teng Li Zhaomin Li Songyan | 2013 | Energy Fuels2013，27，6： | 1 |
| 17 | The research on low damage nitrogen foam fracturing fluid for CBM显示文摘 | LI Zhaomin LU Qichao LI Songyan | 2013 | Journal of China University of Petroleum (Edition of Natural Science)2013，37，5： | 1 |
| 18 | Modeling of lifting heavy oil assisted by enclosed thermal fluid circulation in hollow rod显示文摘 | Songyan Li Zhaomin Li Binfei Li Riyi Lin | 2010 | Journal of Petroleum Science and Engineering2010，，1： | 1 |
| 19 | Implications of Stahl's Theorems to Holomorphic Embedding Part II: Numerical Convergence显示文摘What has become known as Stahl's Theorem in power-engineering circles has been used to justify a convergence guarantee of the Holomorphic Embedding Method(HEM)as it applies to the power-flow problem.In this,the second part of a two-part paper,we examine implications to numerical convergence of the HEM and the numerical properties of a Pade approximant algorithm.We show that even if the point of interest is within the convergence domain,numerical convergence of the sequence of Pade approximants computed with finite precision is not guaranteed.We propose a convergence factor equation that can be used to both estimate the convergence rate and the capacity of the branch cut.We also show that the study of convergence properties of the Pade approximant is the study of the location of the branch-points of the function,which in turn dictate branch-cut topology and capacity and,therefore,convergence rate. | Abhinav Dronamraju Songyan Li Qirui Li Yuting Li Daniel Tylavsky Di Shi Zhiwei Wang | 2021 | CSEE Journal of Power and Energy Systems2021，7，4： | 1 |
| 20 | Wide-field aurora imager onboard Fengyun satellite:Data products and validation显示文摘New observations of auroras based on the wide-field aurora imager(WAI)onboard Fengyun-3D(FY-3D)satellite are exhibited in this paper.Validity of the WAI data is analyzed by comparing auroral boundaries derived from WAI observations with results obtained from data collected by the Special Sensor Ultraviolet Spectrographic Imager(SSUSI)aboard the Defense Meteorological Satellite Program(DMSP F18).Dynamic variations of the aurora with the solar wind,interplanetary magnetic field(IMF)parameters,and the SYM-H index are also investigated.The comparison of auroral boundaries indicates that the WAI data are morphologically valid and suitable to the study of auroral dynamics.Effective responses to solar wind parameters indicate that the WAI data can be useful to monitor and predict the Earth’s space weather.Since the configuration of aurora is a good indicator of the solar wind–magnetosphere–ionosphere(SW-M-I)coupling system,and can reflect the disturbance of the space environment,the WAI will provide important data to help us to study the physical processes in space. | GuangXing Ding JiaWei Li XiaoXin Zhang Fei He LingPing He KeFei Song Liang Sun Shuang Dai ShiJie Liu Bo Chen Chao Yu XiuQing Hu SongYan Gu ZhongDong Yang Peng Zhang | 2021 | Earth and Planetary Physics2021，5，1： | 1 |
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