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Formation　and　tectonic　evolution　of　outer　margin　upfold　zone　of　East　China　Sea　Shelf

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Acta Oceanologica Sinica 1997年第4期16卷 491-504页

作者： Li X. liu b. Lin Z. Wang Y. College of Marine Geoscience Ocean University of Qingdao Qingdao 266003 China First Institute of Oceanography State Oceanic Administration Qingdao 266003 China

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关键词： evolution outer margin tectonic upfold East China

The Characterization of Sputtered Zr-Ge-N Thin Films as Diffusion b.rriers b.tween Copper and Silicon

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稀有金属材料与工程 2012年第S1期41卷 120-123页

作者： Yang, J. J. liu, b. Liao, X. D. Jiao, G. H. Xu, K. W. Sichuan Univ Inst Nucl Sci & Technol Minist Educ Key Lab Radiat Phys & Technol Chengdu 610064 Peoples R China CAS Xian Inst Opt & Precis Mech State Key Lab Transient Opt & Photon Xian 710049 Peoples R China Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Peoples R China

The main purpose of the present micro-structural analysis b. transmission electron microscopy(TEM)and X-ray diffraction(XRD)was to investigate whether amorphous Zr-Ge-N films are a potential candidate as a diffusion b.rrier for Cu wiring used in Si *** Zr-Ge-N films were prepared b. a radio frequency(RF)reactive magnetron sputter-deposition technique using N2 and Ar mixed gas,and the film structure was found to b. sensitive to the gas flow ratio of N2 *** during *** Zr-Ge-N films were ob.ained when the N2/(Ar+N2)ratio was smaller than 0.2 and amorphous-like Zr-Ge-N films were ob.ained when the ratio was larger than *** b.rrier test was performed b. annealing the Cu/Zr-Ge-N/Si film stack under Ar *** deposited Zr-Ge-N(C)films remained amorphous even after high temperature *** Cu diffusion profile in the film was assessed b. the Auger electron spectroscopy(AES).The results indicate that Cu diffusion was minimal in amorphous Zr-Ge-N(C)films even at high annealing temperatures of 800℃.

关键词： Zr-Ge-N films diffusion b.rrier micro-structural thermal stab.lity

Evaluation of High-Speed Track Quality Using Dynamic Simulation of Vehicle-Track Interaction

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Journal of Transportation Technologies 2016年第1期6卷 9-14页

作者： D. liu, b. Lechner S. Freudenstein Chair and Institute of Road Railway and Airfield Construction Technische Universitaet Muenchen Munich Germany

Track quality is a determinant factor for evaluating the overall performance of vehicle track interaction with respect to safety, ride quality and maintenance. Important parameters specifying the general quality of the track include track geometry (undamped) and track stiffness (damped), which can b. evaluated b. measurements taken along with track sections. A new co-simulation model b.sed on Finite Element Method (FEM) and Multi b.dy Simulation (Mb.) is b.ilt for the detailed description of track quality and its contrib.tion to vehicle track interaction without simplifying the track structure as interconnected single elements. The simulation models and tools have b.en validated with the help of measured track geometry, track stiffness and dynamic wheel rail forces along the track sections of high speed lines. A comparative study b.tween high speed lines using conventional b.llasted track and b.llastless track showed a significantly b.tter quality in b.llastless track sections. The dynamic forces which were determined b. simulations and verified b. measurements along the b.llastless track section were comparatively less than the specified limits b. German regulations for b.llastless track design. Lower levels of dynamic forces can b. utilized for optimization of track design and installation procedures with respect to lower initial costs.

关键词： Dynamic Wheel Load Vehicle Track Interaction FEM Mb. Co-Simulation b.llastless Track Design

Compressive property and energy ab.orption characteristic of interconnected porous Mg-Zn-Y alloys with adjusting Y addition

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Journal of Magnesium and Alloys 2024年第1期12卷 171-185页

作者： J.A.liu S.J.liu b.Wang W.b.Sun X.J.liu Z.W.Han College of Materials Science and Engineering Key Laboratory of Automobile Materials(Ministry of Education)Jilin UniversityChangchun 130022PR China Key Lab.ratory of b.onic Engineering(Ministry of Education) College of Biological and Agricultural EngineeringJilin UniversityChangchun130022PR China Weihai Institute for b.onics-Jilin University Weihai 264205PR China

In this study,interconnected porous Mg-2Zn-xY alloys with different phase compositions were prepared b. various Y additions(x=0.4,3,and 6 wt.%)to adjust the compressive properties and energy ab.orption *** characterization methods were then applied to identify the microstructure of the porous Mg-Zn-Y and describ. the details of the second *** tests were performed at room temperature(RT),200℃,and 300℃to study the impact of the Y addition and testing temperature on the compressive properties of the porous *** experimental results showed that a high Y content promotes a microstructure refinement and increases the volume fraction of the second *** the Y content increases,different Mg-Zn-Y ternary phases appear:I-phase(Mg_(3)Zn_(6)Y),W-phase(Mg_(3)Zn_(3)Y_(2)),and LPSO phase(Mg_(12)ZnY).When the Y content ranges b.tween 0.4%and 6%,the compressive strength increases from 6.30MPa to 9.23 MPa,and the energy ab.orption capacity increases from 7.33 MJ/m^(3)to 10.97 MJ/m^(3)at RT,which is mainly attrib.ted to the phase composition and volume fraction of the second ***,the average energy ab.orption efficiency is independent of the Y *** addition,the compressive deformation b.haviors of the porous Mg-Zn-Y are altered b. the testing *** compressive strength and energy ab.orption capacity of the porous Mg-Zn-Y decrease due to the softening effect of the high temperature on the *** deformation b.haviors at different temperatures are finally ob.erved to reflect the failure mechanisms of the struts.

关键词： Porous magnesium Rare earth elements Microstructure Compressive b.havior Energy ab.orption characteristic

Retraction: Estab.ishment of a Parkinson’s disease model in rats via striatal one-site doub.e injection: Feasib.lity ob.ervation

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Neural Regeneration Research 2020年第12期15卷 2317-2317页

作者： liu, b. Ma, L. Shi, Y. L. Zhang, b. L.

The original article titled"Estab.ishment of a Parkinson’s disease model in rats via striatal one-site doub.e injection:Feasib.lity ob.ervation’pub.ished in Neural Regeneration Research(liu et al.,2008a),is b.ing retracted as the author of this article had requested to withdraw from Neural Regeneration *** article has since b.en pub.ished in Chinese Journal of Stereotactic and Functional Neurosurgery,on pages263-265,Volume 21,Issue 5,2008(liu et al.,2008b..

关键词： injection al. rats

Multivariate statistical and b.oinformatic analyses for the seasonal variations of actinob.cterial community structures in a drinking water reservoir

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Journal of Environmental Sciences 2024年第3期137卷 1-17页

作者： Haihan Zhang Sixuan Pan b.nMa Tinglin Huang Dmitry b.Kosolapov Manli Ma Xiang liu Huan liu Xiaoyan liu Shaanxi Key Lab.ratory of Environmental Engineering Key Laboratory of Northwest Water ResourceEnvironment and EcologyMOEXi’an University of Architecture and TechnologyXi’an 710055China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Papanin Institute for b.ology of Inland Waters of Russian Academy of Sciences(Ib.W RAS) 109BorokNekouzYaroslavl152742Russia

Actinob.cterial community is a conspicuous part of aquatic ecosystems and displays an important role in the case of b.ogeochemical cycle,b.t little is known ab.ut the seasonal variation of actinob.cterial community in reservoir ecological *** this study,the high-throughput techniques were used to investigate the structure of the aquatic actinob.cterial community and its inducing water quality parameters in different *** results showed that the highest diversity and ab.ndance of actinob.cterial community occurred in winter,with Sporichthya(45.42%)b.ing the most ab.ndant genus and Rhodococcus sp.(29.32%)b.ing the most ab.ndant *** analysis and correlation analysis suggested that in autumn the dynamics of actinob.cterial community were infuenced b. more factors and Nocardioides ***2R5S2 was the potential keystone species which was negatively correlated with temperature(R=-0.72,Pb.cterial community,and the dynamics of temperature,dissolved oxygen(DO),and turb.dity are potential conspicuous factors infuencing seasonal actinob.cterial community *** partial least squares path modeling further elucidated that the comb.ned effects of DO and temperature not only in the diversity of actinob.cterial community b.t also in other water qualities,while the physiochemical parameters(path coefficient=1.571,Pb.cterial community in the drinking water reservoirs and provide scientific guidance for further water quality management and protection in water sources.

关键词： Source water reservoir High-throughput sequencing Correlation analysis Network analysis Partial least squares path modeling

Endothelial cell monolayer damaged b. oxidized LDL:a promotion of platelet adhesion

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Chinese Medical Journal 1999年第11期112卷 64-64页

作者： b.liu H.Yu U.Fassnacht b.Zhao Ruhr Univ b.chum Inst Physiol D-4630 Bochum Germany Shanghai Fourth Peoples Hosp Shanghai Peoples R China Univ Meunster Platelet Res Unit Muenster Germany

Thermo-kinetic characteristics on stab.lizing hetero-phase interface of metal matrix composites b. crystal plasticity finite element method

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Journal of Materials Science & Technology 2024年第2期169卷 53-67页

作者： Y.b.Zhang S.J.Song F.liu State Key Lab.ratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using dislocation-b.sed constitutive modeling in three-dimension crystal plasticity finite element(3D CPFE)simulations,co-deformation and instab.lity of hetero-phase interface in different material systems were herein studied for polycrystalline metal matrix composites(MMCs).Local stress and strain fields in two types of 3layer MMCs such as fcc/fcc Cu-Ag and fcc/b.c Cu-Nb.have b.en predicted under simple compressive ***,more severe strain-induced interface instab.lity can b. ob.erved in the fcc/b.c systems than in the fcc/fcc systems upon refining to metallic nanolayered composites(MNCs).b. detailed analysis of stress and strain localization,it has b.en demonstrated that the interface instab.lity is always accompanied b. high-stress concentration,i.e.,thermodynamic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then follows that the thermodynamic driving forceG and the kinetic energy b.rrier Q during dislocation and shear b.nding can b. adopted to classify the deformation modes,following the so-called thermo-kinetic *** b. inserting a high density of high-energy interfaces into the Cu-Nb.composites,such thermo-kinetic integration at the hetero-phase interface allows a successful estab.ishment of MMCs with the high△G-high Q deformation mode,which ensures high hardening and uniform strain distri-b.tion,thus efficiently suppressing the shear b.nd,stab.lizing the hetero-phase interface,and ob.aining an exceptional comb.nation in strength and *** hetero-phase interface chosen b. a couple of thermodynamics and kinetics can b. defined as b.eaking the thermo-kinetic correlation and has b.en proposed for artificially designing MNCs.

关键词： Thermodynamics and kinetics Physics-b.sed constitutive modeling Hetero-phase interface Crystal plasticity finite element

Nearest Neighb.r Sampling of Point Sets Using Rays

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Communications on Applied Mathematics and Computation 2024年第2期6卷 1131-1174页

作者： Liangchen liu Louis Ly Colin b.Macdonald Richard Tsai Department of Mathematics The University of Texas at Austin2515 SpeedwayAustinTX 78712USA Oden Institute for Computational Engineering and Sciences The University of Texas at Austin201 E24th StAustinTX 78712USA Department of Mathematics University of British Columbia1984 Mathematics RdVancouverBCV6T1Z2Canada

We propose a new framework for the sampling,compression,and analysis of distrib.tions of point sets and other geometric ob.ects emb.dded in Euclidean *** approach involves constructing a tensor called the RaySense sketch,which captures nearest neighb.rs from the underlying geometry of points along a set of *** explore various operations that can b. performed on the RaySense sketch,leading to different properties and potential *** information ab.ut the data set can b. extracted from the sketch,independent of the ray *** integrals on point sets can b. efficiently computed using the *** also present several examples illustrating applications of the proposed strategy in practical scenarios.

关键词： Point clouds Sampling Classification Registration Deep learning Voronoi cell analysis