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23篇 您的检索式:作者名="Tieying Li"
    题名 作者 年代 出处 被引量
1Clinical efficacy and safety of moxifloxacin versus levofloxacin plus metronidazole for community-acquired pneumonia with aspiration factors显示文摘Sun Tieying Sun Li Wang Rongmei Ren Xiaoping Sui Dong-jiang Pu Chun Ren Yajuan Liu Ying Yang Zhuo Li Fengzhi 2014Chinese Medical Journal2014,,7:34
2Bioptical microcycles of laminated speleothems from China and their chronological significance显示文摘Interfaces of microlayers, in most stalagmites from China, consist of opaque and organic materials. Observed with microscope, the interfaces seem dark under transmitted light and luminiferous under reflected fluorescent light. Stalagmites in which the two optical characters are unified spatially would be most suitable for cross-dating use, and can play an important role in the study on speleochronology and speleoclimatology.Ming Tan Xiaoguang Qin Linmei Shen Xianfeng Wang Yongjin Wang Tieying Li Linhua Song Laihong Wang Dongsheng Liu 1999Chinese Science Bulletin1999,44,17:14
3Longitudinal parameter identification of a small unmanned aerial vehicle based on modified particle swarm optimization显示文摘This paper describes a longitudinal parameter identification procedure for a small unmanned aerial vehicle(UAV)through modified particle swam optimization(PSO).The procedure is demonstrated using a small UAV equipped with only an micro-electro-mechanical systems(MEMS)inertial measuring element and a global positioning system(GPS)receiver to provide test information.A small UAV longitudinal parameter mathematical model is derived and the modified method is proposed based on PSO with selective particle regeneration(SRPSO).Once modified PSO is applied to the mathematical model,the simulation results show that the mathematical model is correct,and aerodynamic parameters and coefficients of the propeller can be identified accurately.Results are compared with those of PSO and SRPSO and the comparison shows that the proposed method is more robust and faster than the other methods for the longitudinal parameter identification of the small UAV.Some parameter identification results are affected slightly by noise,but the identification results are very good overall.Eventually,experimental validation is employed to test the proposed method,which demonstrates the usefulness of this method.Jiang Tieying Li Jie Huang Kewei 2015Chinese Journal of Aeronautics2015,28,3:10
4Experimental study on electrical conductivity of dunite at high temperature and pressure——The evidence of electrical conductivity of cold mantle in the Gaize-Lugu area显示文摘The electrical conductivities of the dunite from the Qinghai-Xizang (Tibetan) Plateau were measured with the impedance spectra method at 1.0-4.0 GPa and 643-1093 K. The experimental results indicated that activation enthalpies of the dunite are smaller than 0.9 eV, the conduction mechanism in dunite may be attributed to the mixed electrical conduction involving grain interiors and boundaries. On the basis of the results of this experiment, we can deduce that there exists cold mantle in the area of Gaize-Lugu in the Qinghai-Xizang (Tibetan) Plateau by reverse methods from the magnetotelluric sounding data (conductivity-depths profile) available for western Tibet. The result provides the present cold mantle viewpoint with strong proof on the basis of high temperature and pressure experiments.WANG Duojun LI Heping LIU Congqiang ZHAO Zhidan MO Xuanxue GUO Tieying SU Gengli DING Dongye 2001Chinese Science Bulletin2001,46,24:5
5Preliminary study on climatic signals of stable isotopes from Holocene speleothems under monsoon condition显示文摘Within the East Asian monsoon zone the change in oxygen isotope of Holocene stalagmite is mainly related to monsoon rain rather than to temperature. And carbon isotope can be taken as a comprehensive signal which contains the natural information and the information of anthropogenic activity. Isotopic analysis is also compared with the annual layer records.Ming Tan Dongsheng Liu Hua Zhong Xiaoguang Qin Hongchun Li Shusen Zhao Tieying Li Jinbo Lu Xiangyang Lu 1998Chinese Science Bulletin1998,43,6:4
6Temperature-dependent evolution of surface charge screening and polarization at ferroelectric surfaces显示文摘The polarization and domain behavior on the surface of a ferroelectric material are significantly affected by the screening processes [1-12].Recently,there has been a notable increase in the theoretical calculations and experiments investigating the dynamics of polarization and domain behaviors coexisting in phase transitions of ferroelectric materials.LongFei Wang Yi Luo JieSu Wang XiuShi Huang ZhaoMeng Gao TieYing Yang XiaoLong Li Pei Li KuiJuan Jin WeiFeng Zhang HaiZhong Guo 2019Science China(Physics,Mechanics & Astronomy)2019,62,8:3
7Direct Growth of Graphene on Silicon by Metal-Free Chemical Vapor Deposition显示文摘The metal-free synthesis of graphene on singlecrystal silicon substrates, the most common commercial semiconductor, is of paramount significance for many technological applications. In this work, we report the growth of graphene directly on an upside-down placed,single-crystal silicon substrate using metal-free, ambientpressure chemical vapor deposition. By controlling the growth temperature, in-plane propagation, edge-propagation, and core-propagation, the process of graphene growth on silicon can be identified. This process produces atomically flat monolayer or bilayer graphene domains, concave bilayer graphene domains, and bulging few-layer graphene domains. This work would be a significant step toward the synthesis of large-area and layer-controlled, high-quality graphene on single-crystal silicon substrates.Lixuan Tai Daming Zhu Xing Liu Tieying Yang Lei Wang Rui Wang Sheng Jiang Zhenhua Chen Zhongmin Xu Xiaolong Li 2018Nano-Micro Letters2018,10,2:2
8Near-zero-dispersion soliton and broadband modulational instability Kerr microcombs in anomalous dispersion显示文摘The developing advances of microresonator-based Ker cavity solitons have enabled versatile applications ranging from communication,signal processing to high-precision measurements.Resonator dispersion is the key factor determining the Kerr comb dynamics.Near the zero group-velocity-dispersion(GVD)regime,low-noise and broadband microcomb sources are achievable,which is crucial to the application of the Kerr soliton.When the GVD is almost vanished,higher-order dispersion can significantly affect the Kerr comb dynamics.Although many studies have investigated the Kerr comb dynamics near the zero-dispersion regime in microresonator or fiber ring system,limited by dispersion profles and dispersion perturbations,the near-zero-dispersion soliton structure pumped in the anomalous dispersion side is still elusive so far.Here,we theoretically and experimentally investigate the microcomb dynamics in fiber-based Fabry-Perot microresonator with ultra-small anomalous GVD.We obtain 2/3-octave-spaning microcombs with~10 GHz spacing,>84 THz span,and>8400 comb lines in the modulational instability(MI)state,without any external nonlinear spectral broadening.Such widely-spanned Ml combs are also able to enter the soliton state.Moreover,we report the first observation of anomalous-dispersion based near-zero-dispersion solitons,which exhibits a local repetition rate up to 8.6 THz,an individual pulse duration<100 fs,a span>32 THz and>3200 comb lines.These two distinct comb states have their own advantages.The broadband MI combs possess high conversion efficiency and wide existing range,while the near-zero-dispersion soliton exhibits relatively low phase noise and ultra-high local repetition rate.This work complements the dynamics of Kerr cavity soliton near the zero-dispersion regime,and may stimulate cross-disciplinary inspirations ranging from dispersion-controlled microresonators to broadband coherent comb devices.Zeyu Xiao Tieying Li Minglu Cai Hongyi Zhang Yi Huang Chao Li Baicheng Yao Kan Wu Jianping Chen 2023Light(Science & Applications)2023,12,2:2
9Structural and temporal dynamics analysis on drug-eluting stents: History, research hotspots and emerging trends显示文摘Purpose:This review aims to explore the history,research hotspots,and emerging trends of drug-eluting stents(DES)in the last two decades from the perspective of structural and temporal dynamics.Methods:Publications on DES were retrieved from WoSCC.The bibliometric tools including CiteSpace and HistCite were used to identify the historical features,the evolution of active topics,and emerging trends on the DES field.Results:In the last 20 years,the field of DES is still in the hot phase and there is a wide range of extensive scientific collaborations.In addition,active topics emerge in different periods,as evidenced by a total of 41 disciplines,511 keywords,and 1377 papers with citation bursts.Keyword clustering anchored five emerging research subfields,namely#0 dual antiplatelet therapy,#3 drug-coated balloon,#4 bifurcation,5#rotational atherectomy,and 6#quantitative flow ratio.The keyword alluvial map shows that the most persistent research concepts in this field are thrombosis,restenosis,etc.,and the emerging keywords are paclitaxel eluting balloon,coated balloon,drug-eluting balloon,etc.There are 7 recent research subfields anchored by reference clustering,namely#2 dual antiplatelet therapy,#4 drug-coated balloon,#5 peripheral artery disease,#8 fractional flow reserve,#10 bioresorbable vascular scaffold,#13 intravascular ultrasound,#14 biodegradable polymer.Conclusion:The findings based on the bibliometric studies provide the current status and trends in DES research and may help researchers to identify hot topics and explore new research directions in this field.Lili Tan Xiangxiu Wang Kungshan Yuan Tieying Yin Ruolin Du Li Shen Zhirong Zhu Suhua Yu Haijun Zhang Guixue Wang 2023Bioactive Materials2023,,5:2
10Integrated lens auto-focus system driven by a nut-type ultrosonic motor (USM)显示文摘This paper introduces an integrated optical auto-focus system driven by a nut-type ultrasonic motor (USM). The system comprises an optical lens as a rotor (M6 or M7), a polyhedral tube of copper as a stator; an image sensor, and a driver IC of the motor. The sizes of the AF (auto-focus) module are 8.5 mm×8.5 mm×5.9 mm. The piezoelectric elements are bonded on the external surface of the stator. The rotor has external screw thread that engages with the inner screw thread of the stator. When the piezoelectric elements are excited by the driver IC, a bend traveling wave in plane is generated on the stator along the circle direction, that drives the lens rotor to rotate and then to move axially. The driver IC is controlled by an image feedback of an image sensor centered on the axis of the casing, then the optical focusing is realized. The power consumption is zero at rest and is less than 0.25 W in motion; focusing precision <10 μm; speed >3 r/s(180 r/min); response <10 ms; high reliability: resistant to shock and fall off; directly driven by the driver IC without transmission mechanism; the friction force is namely the driving force and noiseless. The integrated optical auto-focus system is very useful, especially for cellular phones. The image resolution of 3―5 MP has been obtained in the module prototypes of the cellular phone.ZHOU TieYing CHEN Yu LU CunYue FU DeYong HU XiaoPing LI Yi TIANBin 2009Science China(Technological Sciences)2009,52,9:2
11A nut-type ultrasonic motor and its application in the focus system显示文摘This article reports a screw-driven polyhedron linear ultrasonic motor(USM) of nut-type.It is comprised of a stator,which is a threaded metal nut bonded with piezoelectric plates on its external surface,and a rotor with external threads,which engage with the internal threads of the stator.A traveling wave in the plane is stimulated on the stator when harmonic electric signals are applied to the piezoelectric plates.The traveling wave drives the rotor to rotate,and the threads transform the rotation into a linear motion.The lens can be fixed in the rotor and realize the integrated design of the auto focus system.This structure can omit retarder and directly drive to obtain a high accuracy of positioning,and it is shockproof.A mini AF cellular phone module(8.5 mm×8.5 mm×5.9 mm) driven by this motor was made and an image resolution of 3-5 MP was obtained in the module prototypes of the cellular phone.ZHOU TieYing ZHANG Yun CHEN Yu LU CunYue FU DeYong LI Yi HU XiaoPing 2009Chinese Science Bulletin2009,54,20:1
12Grey characteristics of microbanding of stalagmite in Shihua Cave, Beijing and its climatic signification(I)显示文摘Xiaoguang Qin Dongsheng Liu Ming Tan Tieying Li Jinpo Zhaoyan Gu Houyuan Zhongli Ding Zhengtang Guo Jiaqi Liu Gaozhong Nie 1998Science in China Series D: Earth Sciences1998,,2:1
13Grey characteristics of microbanding of stalagmite in Shihua Cave, Beijing and its climatic signification(I)显示文摘Xiaoguang Qin Dongsheng Liu Ming Tan Tieying Li Jinpo Zhaoyan Gu Houyuan Zhongli Ding Zhengtang Guo Jiaqi Liu Gaozhong Nie 1998Science in China Series D: Earth Sciences1998,,2:1
14Grey characteristics of microbanding of stalagmite in Shihua Cave, Beijing and its climatic signification(I)显示文摘Xiaoguang Qin Dongsheng Liu Ming Tan Tieying Li Jinpo Zhaoyan Gu Houyuan Zhongli Ding Zhengtang Guo Jiaqi Liu Gaozhong Nie 1998Science in China Series D: Earth Sciences1998,,2:1
15FLEXIBLE MULTIBODY SYSTEM DYNAMICS-FINITE SEGMENT METHOD显示文摘FLEXIBLEMULTIBODYSYSTEMDYNAMICS-FINITESEGMENTMETHOD¥ZhangDajun;LiuYouwu;YunChao;WangShuxin;JiangTieying;LiYangmin(TianjinUniv...Zhang Dajun Liu Youwu Yun Chao Wang Shuxin Jiang Tieying Li Yangmin(Tianjin University) 1994Chinese Journal of Mechanical Engineering1994,7,2:1
16A〈100〉directionfront-etched membrane structure for a micro-bolometer显示文摘Ma Tieying Liu Yidong Li Tie 2009J Micromech Microeng2009,19,3:1
17Thermodynamic property of gases in the sonoluminescing bubble显示文摘With the theory of statistical physics dealing with chemical reaction (the law of mass action), the different thermodynamic property of noble gases (mono-atomic gases) in a small bubble and diatomic gases in a small bubble semi-quantitatively are analyzed. As bubbles of the mono-atomic and the diatomic gases are compressed, shock waves are produced in both bubbles. Though shock wave leads to sharp increase of pressure and temperature of gases in the bubble, diatomic gas will excitated vibrations and dissociate themselves to mono-atomic gas, these processes will consume many accumulated heat energy and block the further increase of the temperature. Therefore, compare with the mono-atomic gases in the bubble, there will be no enough charged particles ionized to flash for diatomic gases in the bubble, this may be the reason why a bubble of diatomic gases has no single bubble sonoluminescence while a bubble of noble gases has.AN Yu,LI Guiqin,ZHOU Tieying (Physics Department, Tsinghua University Beijing 100084) 2001Chinese Journal of Acoustics2001,20,1:0
18Evaluation on the Value of Coastal Recreational Resources in Qingdao显示文摘Coastal recreational resources are public goods without market price or with lower price,which have competitive service and irreversible decision on development.It is an important aspect for the sustainable use to evaluate the economic value of the recreational resources using the existing environment and resources valuation methods.This paper focuses on evaluating the value of coastal recreational resources in Qingdao by adopting Travel Cost Method(TCM),which is a relative mature evaluation technique in developed countries.Through questionnaire in main sight-seeing spots along coastal line in Qingdao,correlation equation between visitation rate and travel cost is established.The related data are processed by Eviews,and the demanding curve of tour is fitted and regressed.Then,the economic value of coastal recreational resources in Qingdao is calculated by adding actual tour cost to consumer surplus. It provides scientific evidence for making policies on development and administration and benefits the rational utilization of coastal recreational resources.Li Jingmei Professor,College of Economic of Ocean University of China. Liu Tieying Ocean University of China. Li Lei Ocean University of China. 2009中国海洋经济评论2009,,1:0
19Opportunities and Challenges for the Chinese Economy in the 21^(st) Century显示文摘本文认为,中国取得改革开放与经济建设巨大成就的基本经验,就是中国共产党纠正了1978年以前的“左”的错误,坚持实事求是、解放思想的方针。坚持从中国的国情出发,把是否有利于生产力的发展,是否有利于人民群众生活水平的提高,是否有利于增强综合国力作为判断改革开放和一切工作的基本标准,从而探索出一条以邓小平理论为指导的,建设有中国特色的社会主义道路。文章总结了20年来中国经济发展与改革的主要成就;分析了21世纪中国经济发展面临的机遇和挑战;提出了本世纪中国经济发展的主要任务。Li Tieying 2002Social Sciences in China2002,23,3:0
20The Beautiful and Richly Endowed Jingpo Lake显示文摘TheBeautifulandRichlyEndowedJingpoLakeAlandofnationalsplendorinChina'sNortheast.ByMATIEYING&LICHANGQINGJINGPOLAKEislocatedbet...MA TIEYING LI CHANGQING 1996China Today1996,45,2:0
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