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Acta Mechanica Sinica 2016年第6期32卷 1075-1087页

作者： J.gong L.Thompson g.li Department of Mechanical Engineering Clemson University

A semi-analytical model for determining the equilibrium configuration and the radial breathing mode (RBM) frequency of single-wall carbon nanotubes (CNTs) is presented. By taking advantage of the symmetry characteristics, a CNT structure is represented by five independent variables. A line search optimization procedure is employed to determine the equilibrium values of these variables by minimizing the potential energy. With the equilibrium configuration obtained, the semi-analytical model enables an efficient calculation of the RBM frequency of the CNTs. The radius and radial breathing mode frequency results obtained from the semi-analytical approach are compared with those from molecular dynamics (MD) and ab initio calculations. The results demonstrate that the semi-analytical approach offers an efficient and accurate way to determine the equilibrium structure and radial breathing mode frequency of CNTs.

关键词： Carbon nanotubes Equilibrium structure Radial breathing mode frequency

Damage smear method for rock failure process analysis

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Journal of Rock Mechanics and geotechnical Engineering 2019年第6期11卷 1151-1165页

作者： g.li X.F.Cheng H.Pu C.A.Tang state key laboratory of coastal and offshore engineering dalian university of technologydalian116024china state key laboratory for geomechanics and deep underground engineering china university of mining and technologyxuzhou221116china ocean engineering joint research center of dut-uwa dalian university of technologydalian116024china

Damage smear method(DSM)is adopted to study trans-scale progressive rock failure process,based on statistical meso-damage model and finite element *** statistical approach is utilized to reflect the mesoscopic rock *** constitutive law of representative volume element(RVE)is established according to continuum damage mechanics in which double-damage criterion is *** damage evolution and accumulation of RVEs are used to reveal the macroscopic rock failure *** single RVE will be represented by one unique *** initiation,propagation and coalescence of meso-to macro-cracks are captured by smearing failed *** above ideas are formulated into the framework of the DSM and programed into self-developed rock failure process analysis(RFPA)*** laboratory-scale examples are conducted and the well-known engineering-scale tests,*** Energy of Canada limited’s(AECL’s)Underground Research Laboratory(URL)tests,are used for *** shows that the simulation results match with other experimental results and field observations.

关键词： Failure process Smear method Meso-damage Finite element method (FEM) Rock failure process analysis (RFPA)

Service-oriented infrastructure for flood mapping using optical and SAR satellite data

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International Journal of Digital Earth 2014年第10期7卷 829-845页

作者： N.Kussul A.Shelestov S.Skakun g.li O.Kussul J.Xie Department of Space Information Technologies and Systems Space Research Institute NASU-NSAUKyivUkraine Departemnt of Information Security Physics and Technology InstituteNational Technical University of Ukraine“Kyiv Polytechnic Institute”KyivUkraine Department of Software Engineering National University of Life and Environmental Sciences of UkraineKyivUkraine Data Technology Division Center of Earth Observation and Digital EarthChinese Academy of SciencesBeijingChina

In this paper,we present the service-oriented infrastructure within the Wide Area grid project that was carried out within the Working group on Information Systems and Services of the Committee on Earth Observation *** developed infrastructure integrates services and computational resources of several regional and national grid systems:Ukrainian Academician grid(with satellite data processing grid segment,UASpacegrid)and grid system at the Center on Earth Observation and Digital Earth of Chinese Academy of *** study focuses on integrating geo-information services on flood mapping provided by Ukrainian and Chinese entities to benefit from information acquired from multiple *** also describe services for workflow automation and management in grid environment and provide an example of workflow automation for generating flood maps from optical and synthetic-aperture radar satellite *** also discuss issues of enabling trust for the infrastructure using certificates and reputation-based *** of utilizing the developed infrastructure for operational flood mapping in Ukraine and China are given as well.

关键词： earth observation geoinformatics geospatial data integration image processing remote sensing

Single Crystal growth and Magnetoresistivity of Topological Semimetal CoSi

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Chinese Physics Letters 2019年第7期36卷 77-81页

作者： D.S.Wu Z.Y.Mi Y.J.li W.Wu P.L.li Y.T.Song g.T.liu g.li J L.Luo Institute of Physics and Beijing National Laboratory for Condensed Matter Physics Chinese Academy of Sciences Beijing 100190 School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 Songshan Lake Materials Laboratory Dongguan 523808

We report single crystal growth of CoSi, which has recently been recognized as a new type of topological semimetal hosting fourfold and sixfold degenerate nodes. The Shubnikov–de Haas quantum oscillation(QO) is observed on our crystals. There are two frequencies originating from almost isotropic bulk electron Fermi surfaces, in accordance with band structure calculations. The effective mass, scattering rate, and QO phase difference of the two frequencies are extracted and discussed.

关键词： single crystal growth been recognized as extracted and discussed

STCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng S.Cheng T.g.Cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.Z.Ding L.Y.Dong W.H.Dong V.Druzhinin D.S.Du Y.J.Du Z.g.Du L.M.Duan D.Epifanov Y.L.Fan S.S.Fang Z.J.Fang g.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.gao Y.N.gao P.S.ge C.Q.geng L.S.geng A.gilman L.gong T.gong B.gou W.gradl J.L.gu A.guevara L.C.gui A.Q.guo F.K.guo J.C.guo J.guo Y.P.guo Z.H.guo A.guskov K.L.Han L.Han M.Han X.Q.Hao J.B.He S.Q.He X.g.He Y.L.He Z.B.He Z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua g.S.Huang J.S.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia Z.K.Jia H.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.Lei E.Levichev C.H.li C.li D.Y.li F.li g.li g.li H.B.li H.li H.N.li H.J.li H.L.li J.M.li J.li L.li L.li L.Y.li N.li P.R.li R.H.li S.li T.li W.J.li X.li X.H.li X.Q.li X.H.li Y.li Y.Y.li Z.J.li H.liang J.H.liang Y.T.liang g.R.liao L.Z.liao Y.liao C.X.lin D.X.lin X.S.lin B.J.liu C.W.liu D.liu F.liu g.M.liu H.B.liu J.liu J.J.liu J.B.liu K.liu K.Y.liu K.liu L.liu Q.liu S.B.liu T.liu X.liu Y.W.liu Y.liu Y.L.liu Z.Q.liu Z.Y.liu Z.W.liu I.Logashenko Y.Long C.g.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu Z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko Z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov g.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.S.Qin T.L.Qiu J.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of geosciences Wuhan 430074China China University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China goethe University Frankfurt D-60325 Frankfurt am MainGermany guangxi Normal University Guilin 541004China guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mong.lia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 geV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** STCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

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gaN载流子浓度和迁移率的光谱研究

物理学报 2000年第8期49卷 1614-1619页

作者：李志锋陆卫叶红娟袁先璋沈学础 g.li S.J.Chua 中国科学院上海技术物理研究所 InstituteofMaterialsResearchandEngineering

用红外反射光谱的方法对生长在蓝宝石衬底上的α gaN外延薄膜的载流子浓度和迁移率进行了研究 .通过测量蓝宝石衬底和不同Si掺杂浓度的一系列gaN外延膜的远红外反射谱并进行理论计算和拟合 ,得到gaN中的声子振动参量和等离子振荡的频率... 详细信息

用红外反射光谱的方法对生长在蓝宝石衬底上的α gaN外延薄膜的载流子浓度和迁移率进行了研究 .通过测量蓝宝石衬底和不同Si掺杂浓度的一系列gaN外延膜的远红外反射谱并进行理论计算和拟合 ,得到gaN中的声子振动参量和等离子振荡的频率及阻尼常量 ,并由此计算得到其载流子浓度和迁移率 .计算结果 ,红外方法得到的载流子浓度与Hall测量相一致 ,但迁移率比Hall迁移率要低约二分之一 .同时红外谱与喇曼谱上明显观察到LO声子与等离子体激元耦合模 ,(LPP)

关键词：外延薄膜载流子浓度迁移率氧化镓光谱

Excellent strength-ductility combination in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)multi-principal element alloys by dual-morphology B2 precipitates strengthening

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Journal of Materials Science & Technology 2023年第3期134卷 60-66页

作者： X.S.liu R.li X.F.Fan Q.Q.liu X.Tong A.X.li S.Xu H.Yang S.B.Yu M.H.Jiang C.Huo P.F.Yu M.T.Dove g.li State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China College of Computer Science Sichuan UniversityChengdu 610065China School of Physical and Chemical Sciences Queen Mary University of LondonMile End RoadLondon E14NSUnited Kingdom School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Precipitation strengthening provides one of the most widely-used mechanisms for strengthen-ing multi-principal-element alloys(MPEAs).Here,we report dual-morphology B2 precipitates in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)MPEA obtained by thermo-mechanical *** microscopy charac-terization reveals that the dual-morphology B2 precipitates are either recrystallized B2 particles formed at the grain boundaries or triple junctions with recrystallization process,or rod-like within the non-recrystallized FCC *** dual-morphology B2 precipitates enhance the yield strength and ultimate tensile strength up to 1120 MPa and 1480 MPa,*** work suggests the mechanical proper-ties of the alloy can be optimized by B2 precipitation strengthening to meet the needs of engineering applications.

关键词： Multi-principal element alloys B2 precipitates Heterogeneous nucleation Precipitation strengthening

Cloning and Expression Analysis of Two MADS-Box genes from Strawberry Fruit

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Cloning and Expression Analysis of Two MADS-Box Genes from S...

Syndiotactic polymerization of styrene with homogeneous metallocene catalysts

第七届世界草莓大会

作者： H.C.Zhou Z.R.Kang X.Zhao g.li L.li Zhengzhou Fruit Research Institute Chinese Academy of Agricultural Sciences(CAAS) College of Horticulture and Landscape Architecture Southwest University

A MADS-box protein gene named FaMADSl was isolated from fruit tissue of strawberry（Fragaria ×ananassa Duch.’Toyonoka’） by RT-PCR and *** result of the sequencing showed that the nucleotide sequence of FaMADSl gene has98%similarity with the Fv-MADS-9 gene sequences from the *** cDNA gene sequence is 1,167 bp in length with a 747 bp open reading frame encoding 249 amino acid proteins which displayed the structure of typical plant MADS-box proteins,and 100 bp in the 5’UTR,320 bp in the 3’UTR,and 30 bp in the poly（A）*** SqRT-PCR experiment showed that the FaMADSl gene is only expressed in fruit tissue,with no expression detected in flower *** expression levels in different stages of fruit development and ripening are from low in young flower receptacles to high as fruit receptacles begin turning red with brown achenes,and then expression is lower at the full red fruit *** MADS-box protein gene named FaMADS2 from strawberry fruit was simultaneously cloned by RT-PCR and3’*** cDNA sequence length is 870 bp with a 617 bp coding frame,254 bp in the 3’UTR,and 27 bp in the poly（A） *** nucleotide sequence of the FaMADS2 gene has 96%identity with the FcMADS2 gene *** expression pattern of FaMADSl and FaMADS2 genes is different in tissues and stages of berry ***2 expression appears to be high in flower organs,and shows two peaks of expression in the young flower receptacle and white receptacle *** information provides new clues to aid in understanding the ripening process in strawberry fruit.

关键词： strawberry(Fragaria×ananassa Duch.) MADS-box gene gene cloning semi-quantitative RT-PCR

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Syndiotactic polymerization of styrene with homogeneous meta...

BOND STRUCTURE OF HYDROgENATED DIAMOND liKE CARBON FILMS DEPOSITED BY PLASMA BASED ION IMPLANTATION

International Symposium on Engineering Plastics EP’2004 LANZHOU

作者： B.-g.li K.Cao R.Fan B.Yu State Key Laboratory of Chemical Engineering（Polymer Reaction Engineering Division）Zhejiang University

＜正＞Introduction With a melting point of 270℃,which is highest in all the homopolymer,syndiotactic polystyrene（sPS）has excellent heat resistance,chemical resistance,water/steam resistance and electronic/electric ...

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Acta Metallurgica Sinica(English Letters) 1999年第4期12卷 551-556页

作者： g.li,L.F.Xia ,X.X.Ma,Y.Sun and Z.J.Zhan Schoolof Materials Science and Engineering, Harbin Institute of Technology , Harbin 150001 ,China

The bondstructureofhydrogenated diamond likecarbon( DLC) filmsdeposited with plasmabased ionimplantation ( PBII) wascharacterized by Raman spectroscopy andcore level band and valenceband spectrum of XPS. Theresultsshow thatthe hydrogenated carbon filmspre pared with lower pulse bias, especially zero bias, display polymer like feature. The DLCfilms deposited with 15 kVpulsebiascontainsthehighestdensityofsp3 bonds. Thecore lev elband ( C1s) spectra of allfilmsshifttowardlow bindingenergy after4kVAr+ ion bom barding. The valenceband spectra of hydrogenated DLCfilmsarequite differentfrom thatof diamond and graphite. However, afterion bombarding, besidetwosingle peaksatabout17 0 eVand 12 5 eV(similarto graphite) ,two new sharp peaksappearatabout21 3 eVand 8 0 eV,respectively. Thepeak at8 0 eVcan beconsidertothecontribution duetothe actingofimplanted argon on C Cbondsand C Hbondsin thefilms.

关键词： hydrogenated DLCfilms core level band valence band ,Raman spec troscopy,PBII