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Acta Mechanica Sinica 2007年第4期23卷 415-425页

作者： l.b.chen f.xi j.l.yang solid mechanics research center,beihang university,beijing {3. shandong institute of Architecture and engineering,jinan 2.0014.china solid mechanics research {3. Beihang University Beijing China shandong institute of Architecture and engineering Jinan China

A new elastic-plastic impact-contact model is proposed in this paper. by adopting the principle of minimum acceleration for elastic-plastic continue at finite deformation, and with the aid of finite difference method, the proposed model is applied in the problem of dynamic response of a clamped thin circular plate subjected to a projectile impact centrally. The impact force history and response characteristics of the target plate is studied in detail. The theoretical predictions of the impact force and plate deflection are in good agreements with those of lDA experimental data. linear expressions of the maximum impact force/transverse deflection versus impact velocity are given on the basis of the theoretical results.

关键词： Elastic-plastic contact model ImpactCircular plate Contact force Minimum principleof acceleration

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 Mongolia 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^(3.) 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

Encapsulated fe(IV)Molecular Complex for Photoacoustic Imaging

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CCS Chemistry 2024年第5期6卷 1184-1197页

作者： Ye Xu Chao li Zhong-Yu Yu jiamin Wang Zhaoyang liu Chao jiang Zhen-feng chen xiaoyu Wu Ming-xing li Hong yang Zhao-xi Wang jonathan l.Sessler Department of Chemistry Center for Supramolecular Chemistry and CatalysisInnovative Drug Research CenterShanghai UniversityShanghai 200444 College of Chemistry and Materials Science Shanghai Key Laboratory of Rare Earth Functional MaterialsShanghai Frontiers Science Center of Biomimetic CatalysisShanghai Normal UniversityShanghai 200234 Sijing Community Health Service center of Songjiang District Shanghai 201601 Key laboratory for Chemistry and Molecular engineering of Medicinal Resources Guangxi Normal UniversityGuilin 541004 Department of Chemistry The University of Texas at AustinAustinTexas 78712-1224

stable neutral fe(IV)complex(fe-HDCl),readily accessible on the g scale,was found to possess high water solubility and good stability(<5%degradation over 4 h upon photoirradiation).fe-HDCl is green and absorbs light e... 详细信息

stable neutral fe(IV)complex(fe-HDCl),readily accessible on the g scale,was found to possess high water solubility and good stability(fe-HDCl is green and absorbs light effectively in the visible region(500–800 nm)with aλmax at 650 nm(ɛ=783. M^(−1)cm^(−1)).fe-HDCl also exhibits photothermal(PT)behavior comparable to single-wall carbon nanotubes in the solid *** aqueous solution,high PT conversion(η=72.6%)is achieved,and a strong hyperthermia-based inhibition of cell growth is observed upon subjecting fe-HDCl to near-infrared 73. nm laser *** biological studies in vitro and in vivo confirmed that fe-HDCl is biocompatible,clears readily,and allows the visual detection of blood *** subjecting mice to intravenous injection at low doses(e.g.,50μmol·kg^(−1)),fe-HDCl also permits the photoacoustic(PA)imaging of kidneys and the evaluation of renal fibrosis in mouse *** addition,fe-HDCl allows PA-based imaging of brain tissues,presumably reflecting its ability to pass through the blood-brain *** thus propose that fe-HDCl has a role to play as PT agent and as a photodiagnostic.

关键词： stable fe(IV)complex blood-brain barrier molecular cage photoacoustic imaging renal fibrosis

Hardening and toughening effects of intermediate nanosized structures in a confined amorphous alloy film

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journal of Materials Science & Technology 2022年第23期118卷 44-53页

作者： Z.Q.chen M.C.li X.Tong Y.Zhao j.Y.xie S.W.Guo P.Huang f.Wang H.b.Ke b.A.Sun W.H.Wang Songshan lake Materials laboratory Dongguan 523808China institute of Physics Chinese Academy of SciencesBeijing 100190China xinjiang Key laboratory of solid State Physics and Devices and School of Physical Science and Technology Xinjiang UniversityXinjiangUrumqi 830046China Key laboratory of lCR Materials and Devices of Yunnan Province School of Materials and EnergyYunnan UniversityKunming 650091China State-Key laboratory for Mechanical behavior of Material Xi’an Jiaotong UniversityXi’an 710049China State Key laboratory for Strength and Vibration of Mechanical Structures Xi’an Jiaotong UniversityXi’an 710049China National Demonstration center for Experimental mechanics Education Xi’an Jiaotong UniversityXi’an 710049China

The plastic deformation of amorphous alloys is well known to be localized into shear bands(Sbs),which are believed to stem from the atomic-scale flow defects,i.e.,shear transformation zones(STZs).Yet,the bridge between the mesoscopic Sbs and the atomic-scale STZs remains poorly *** this work,through thermally activating pronouncedβrelaxations in the well-designed crystalline-layer confined amorphous(ClCA)Ni W alloy films,we experimentally captured and observed an intermediate nanosized structure termed as“nano shear bands”(NSbs)with a typical size of 1–2 nm in thickness and5–10 nm in *** influences of such NSb structures on the macroscale deformation behavior were systematically *** was found that NSbs lead to both hardening and toughening effects for the ClCA films,as they promote multiple and controlled shear banding deformation,which results in enhanced *** intermediate NSb structure could connect the microstructural characteristics and macroscopic plasticity in amorphous alloys and may provide new insights for understanding the microscopic deformation mechanism of amorphous alloys as well as tuning/designing their properties.

关键词： Amorphous alloys Nano shear band Hardening Toughening Crystallization

Search for the doubly charmed baryon ■

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Science china(Physics,mechanics & Astronomy) 2020年第2期63卷 8-22页

作者： R.Aaij C.Abellán beteta T.Ackernley b.Adeva M.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar P.Albicocco j.Albrecht f.Alessio M.Alexander A.Alfonso Albero G.Alkhazov P.Alvarez Cartelle A.A.Alves jr S.Amato Y.Amhis l.An l.Anderlini G.Andreassi M.Andreotti f.Archilli j.Arnau Romeu A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni b.Audurier S.bachmann j.j.back S.baker V.balagura W.baldini A.baranov R.j.barlow S.barsuk W.barter M.bartolini f.baryshnikov G.bassi V.batozskaya b.batsukh A.battig V.battista A.bay M.becker f.bedeschi I.bediaga A.beiter l.j.bel V.belavin S.belin N.beliy V.bellee K.belous I.belyaev G.bencivenni E.ben-Haim S.benson S.beranek A.berezhnoy *** D.berninghoff H.C.bernstein E.bertholet A.bertolin C.betancourt f.betti M.O.bettler Ia.bezshyiko S.bhasin j.bhom M.S.bieker S.bifani P.billoir A.birnkraut A.bizzeti M.bjφrn M.P.blago T.blake f.blanc S.blusk D.bobulska V.bocci O.boente Garcia T.boettcher A.boldyrev A.bondar N.bondar S.borghi M.borisyak M.borsato j.T.borsuk T.j.V.bowcock C.bozzi S.braun A.brea Rodriguez M.brodski j.brodzicka A.brossa Gonzalo D.brundu E.buchanan A.buonaura C.burr A.bursche j.S.butter j.buytaert W.byczynski S.Cadeddu H.Cai R.Calabrese S.Cali R.Calladine M.Calvi M.Calvo Gomez A.Camboni P.Campana D.H.Campora Perez l.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini P.Carniti K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero R.Cenci j.Cerasoli M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis M.Chefdeville V.Chekalina C.chen S.chen A.Chernov S.-G.Chitic V.Chobanova M.Chrzaszcz A.Chubykin P.Ciambrone M.f.Cicala X.Cid Vidal G.Ciezarek f.Cindolo P.E.l.Clarke M.Clemencic H.V.Cliff j.Closier j.l.Cobbledick V.Coco j.A.b.Coelho j.Cogan E.Cogneras l.Cojocariu P.Collins T.Colombo A.Comerma-Montells A.Contu N.Cooke G.Coombs S.Coquereau G.Corti C.M.Costa Sobral b.Couturier D.C.Craik j.Crkovska A.Crocombe M.Cruz Torres R.Currie C.l.Da Silva E.Dall'Occo j.Dalseno C.D'Ambrosio A.Danilina P.d'Argent A.Davis O.De Aguiar francisco K.De bruyn S.De Capua M Centro brasileiro de Pesquisas fisicas(CbPf) Rio de JaneiroBrazil Universidade federal do Rio de janeiro(UfRj) Rio de JaneiroBrazil center for High Energy Physics Tsinghua UniversityBeijingChina School of Physics State Key laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina university of Chinese Academy of Sciences BeijingChina institute Of High Energy Physics(IHEP) BeijingChina institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance lAl Univ.Paris-SudCNRS/IN2P3Universite Paris-SaclayOrsayFrance lPNHE Sorbonne Universite Paris Diderot Sorbonne Paris Cite CNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INfN Sezione di bari BariItaly INfN Sezione di bologna BolognaItaly INfN Sezione di ferrara FerraraItaly INfN Sezione di firenze FirenzeItaly INfN laboratori Nazionali di frascati FrascatiItaly INfN Sezione di Genova GenovaItaly INfN Sezione di Milano-bicocca MilanoItaly INfN Sezione di Milano MilanoItaly INfN Sezione di Cagliari MonserratoItaly INfN Sezione di Padova PadovaItaly INfN Sezione di Pisa PisaItaly INfN Sezione di Roma Tor Vergata RomaItaly INfN Sezione di Roma la Sapienza RomaItaly Nikhef National institute for Subatomic Physics AmsterdamNetherlands Nikhef National institute for Subatomic Physics and VU university Amsterdam AmsterdamNetherlands Henryk Niewodniczanski institute of Nuclear Physics Polish Academy of Sciences KrakowPoland AGH-university of Science and Technology Faculty of Physics and Applied Computer ScienceKrakowPoland Natio

A search for the doubly charmed baryon ■^+cc is performed through its decay to theΛ^+c K^-π^+ final state,using proton-proton collision data collected with the lHCb detector at centre-of-mass energies of 7,8 and 13.*** data correspond to a total integrated luminosity of 9 fb^-*** significant signal is observed in the mass range from 3.4 to 3.8 GeV/c^*** limits are set at 95%credibility level on the ratio of the ■^+cc production cross-section times the branching fraction to that ofΛ^+c and ■^++cc *** limits are determined as functions of the ■^+cc mass for different lifetime hypotheses,in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c.

关键词： charmed baryons limits on production of particles charmed quarks experimental tests

石棉破碎车间粉尘质量浓度分布的数值模拟及实测

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中国安全生产科学技术 2017年第6期13卷 179-184页

作者：时训先邓权龙蒋仲安陈兵中国安全生产科学研究院北京100012 北京科技大学土木与资源工程学院北京100083

为改善破碎车间内部粉尘浓度超标的现状,掌握石棉选矿厂破碎车间内粉尘浓度的分布规律,依据气固两相流、气溶胶力学等相关理论,建立粉尘在空气内运动、扩散及沉降方程。以西南某石棉选矿厂破碎车间为研究背景,采用计算机流体力学的离散... 详细信息

为改善破碎车间内部粉尘浓度超标的现状,掌握石棉选矿厂破碎车间内粉尘浓度的分布规律,依据气固两相流、气溶胶力学等相关理论,建立粉尘在空气内运动、扩散及沉降方程。以西南某石棉选矿厂破碎车间为研究背景,采用计算机流体力学的离散相模型,运用fluent软件对石棉破碎车间粉尘质量浓度分布进行数值模拟,并与现场粉尘浓度实测数据比较分析。研究表明:模拟结果和实测数据相吻合;粉尘集中在胶带输送室和破碎机给料口附近,全尘浓度最大为86.24 mg/m^3.纤维浓度最高为12.46 f/m l;粉尘浓度随着距破碎机入口的距离增加而逐渐变小;地面呼吸带高度粉尘浓度相对处于较低水平,维持在9~16 mg/m^3.间。

关键词：石棉选矿厂破碎车间粉尘质量浓度数值模拟现场测定