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

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^(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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Achieving superior strength-ductility synergy in a heterostructured magnesium alloy via low-temperature extrusion and low-temperature annealing

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Journal of Materials Science & technology 2023年第32期163卷 32-44页

作者： H.Wang D.t.Zhang C.qiu W.W.Zhang D.l.Chen Guangdong Key laboratory for Advanced Metallic Materials Processing and Forming National Engineering Research Center of Near-net-shape Forming for Metallic MaterialsSouth China University of TechnologyGuangzhou 510640China Department of Mechanical and Industrial Engineering Toronto Metropolitan University(formerly Ryerson University)350 Victoria StreetTorontoON M5B 2K3Canada

A low-alloyed Mg-1.2Zn-0.1Ca(wt.%)alloy was fabricated via low-temperature extrusion and annealing at 250℃for different times(10,30,and 90 min)to attain heterostructures with different fine-grained fractions,focusing on the effect of heterostructure on the mechanical *** dynamic recrystallization(RX)occurred during extrusion at 150℃,and a lamellar structure consisting of fine RX grains and coarse unRX grains was *** subsequent annealing promoted static RX in the as-extruded alloy,leading to an increased fine-grained fraction from 67%to 95%.Meanwhile,the co-segregation of Zn and Ca atoms impeded the migration of grain boundaries,thus achieving a fine grain size of 0.8–1.6μ*** sample annealed for 10 min with a fine-grained fraction of 73%and an average RX grain size of 0.9μm exhibited a superior combination of high yield strength(305 MPa)and good ductility(20%).In comparison,an excellent elongation of 30%was achieved in the alloy with a nearly fully-RXed microstructure and an average grain size of 1.6μm after 90 min annealing,despite a lower yield strength of 228 *** unRX grains,the hard orientation with(01–10)parallel to the extrusion direction and high-density dislocations made it more difficult to deform compared with the RX grains,thus producing hetero-deformation induced(HDI)*** fine grains and high-density dislocations,HDI strengthening is the key to achieving the superior mechanical properties of the low-alloyed Mg alloy.

关键词： low-alloyed magnesium alloy low-temperature extrusion Annealing Heterostructure Mechanical properties

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2D ti_(3)C_(2)t_(x)modified with nano-AgPNPs antioxidant constructed hierarchical interface for high-throughput oily wastewater separation

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Journal of Materials Science & technology 2024年第18期185卷 133-146页

作者： Qing-Ming Wang Xu-Han Chen qiu-Feng lü Qilang lin College of Materials Science and Engineering Fuzhou University2 Wulongjiang North AvenueFuzhou 350108China

Over-exploitation of fossil energy has led to the formation of enormous amounts of oily wastewater,which is increasingly polluting the environment of water *** ti_(3)C_(2)t_(x)-modified separation ma-terial is limited by surface roughness and surface chemical composition,and the permeation flux de-creases significantly during continuous *** this study,silver-loaded polydopamine nanospheres(nano-AgPNPs)as antioxidants were prepared by in-situ reduction from Ag+ions and polydopamine nanospheres,and then they self-assembled with ti_(3)C_(2)t_(x)nanosheets to obtain hierarchical micro-nano structural nano-AgPNPs modified ti_(3)C_(2)t_(x)[(AgPNPs)_(x)t(x=0.25,0.5,0.75,and 1)].Because of their strong reduction properties,nano-AgPNPs antioxidants can effectively protect the active edges of ti_(3)C_(2)t_(x)from dissolved oxygen,and greatly improve the oxidation resistance of ti_(3)C_(2)t_(x)nanosheets,with no signif-icant changes in morphology and physical phase after long-term placement.(AgPNPs)_(x)t formed un-derwater oleophobic interfaces with the hierarchical structure on polyurethane(PU)sponge to prepare(AgPNPs)_(x)t@PU separation *** them,(AgPNPs)_(0.5)t@PU sponge showed the highest compre-hensive performance with separation efficiency higher than 99.6%for various oil-water mixtures,espe-cially high-throughput and permeation flux up to 247,787 l m^(-2)h^(-1)for cyclohexane-water *** addition,nano-AgPNPs greatly broadened the layer spacing of ti_(3)C_(2)t_(x)and can form a functionalized in-terface of modified ti_(3)C_(2)t_(x)on polyamide(PA)membrane and provide additional permeation channels,which enabled the(AgPNPs)_(0.5)t@PA membrane to have excellent toluene-water emulsion separation effi-ciency up to 99.6%.

关键词： ti_(3)C_(2)t_(x) Nano-AgPNPs High-throughput Oily wastewater separation Oxidation resistance

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Design,simulation,and testing of a tunable MEMS multi-threshold inertial switch

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Microsystems & Nanoengineering 2024年第2期10卷 37-46页

作者： qiu Xu Rodrigo t.Rocha Yousef Algoos Eric Feron Mohammad I.Younis Faculty of Electronic Information Engineering Huaiyin Institute of TechnologyHuai’an223003PR China Computer Electrical and Mathematical Science and Engineering DivisionKing Abdullah University of Science and TechnologyThuwal23955-6900Saudi Arabia Piezoelectric Microsystem technologies Silicon Austria LabsVillach9524Austria Physical Sciences and Engineering Division King Abdullah University of Science and TechnologyThuwal23955Saudi Arabia Mechanical Engineering Department State University of New YorkBinghamtonNY13902USA

this paper presents a tunable multi-threshold micro-electromechanical inertial switch with adjustable threshold *** demonstrated device combines the advantages of accelerometers in providing quantitative acceleration measurements and g-threshold switches in saving power when in the inactive state upon experiencing acceleration below the *** designed proof-of-concept device with two thresholds consists of a cantilever microbeam and two stationary electrodes placed at different positions in the sensing *** adjustable threshold capability and the effect of the shock duration on the threshold acceleration are analytically investigated using a nonlinear beam *** are shown for the relationships among the applied bias voltage,the duration of shock impact,and the tunable *** fabricated prototypes are tested using a shock-table *** analytical results agree with the experimental *** designed device concept is very promising for the classification of the shock and impact loads in transportation and healthcare applications.

关键词： tunable acceleration testing

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Molecular dynamics simulation of ion selectivity traits of nickel hexacyanoferrate thin films

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中国有色金属学会会刊：英文版 2006年第4期16卷 897-902页

作者：郝晓刚 YU qiu-ming JIANG Shao-yi D. t. SCHWARtZ Department of Chemical Engineering Taiyuan University of Technology Taiyuan 030024 China Department of Chemical Engineering University of Washington Seattle Washington 98195-1750 USA

the ion selectivity of nickel hexacyanoferrate thin film to alkali cations in ESIX (electrochemically switched ion exchange) processes was investigated using molecular dynamics(MD) techniques; water and cation (Na+ and Cs+) intercalation, configuration, and dynamics in reduced nickel hexacyanoferrate structures with different cation combinations were studied and compared with the experimental results. In the simulations, water was represented by an extended simple point-charge(SPC/E) model, and all other atomic interactions were represented by a universal force field(UFF). the potential energies of various cations combination (Cs+ and Na+) in reduced i-NiHCF and 1 mol/l Cs/NaCl mixed solution were obtained. In most cases, the total potential energy of the solid is reduced when water is intercalated into the various reduced NiHCF structures. Combining the solid and the solution simulation results, it is shown that the solid composition of 3Cs+/1Na+ is the stablest structure form (NaCs3Ni4[Fe(CN)6]3) over a range of solution compositions.

关键词：镍分子动力学模拟离子选择性薄膜离子交换

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抗裂型水泥稳定碎石配合比的性能检测研究

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质量与认证 2025年第1期 117-120页

作者：邱珉霞浦县恒城工程检测有限公司

本文重点研究抗裂型水泥稳定碎石配合比的性能检测,详细总结了水泥稳定碎石材料抗裂性能的评价方法,从粗集料级配设计、细集料级配设计、水泥用量确定、粗细集料配比方案确定4个方面对配合比设计展开分析,并进行了力学性能检测、抗裂性... 详细信息

本文重点研究抗裂型水泥稳定碎石配合比的性能检测,详细总结了水泥稳定碎石材料抗裂性能的评价方法,从粗集料级配设计、细集料级配设计、水泥用量确定、粗细集料配比方案确定4个方面对配合比设计展开分析,并进行了力学性能检测、抗裂性能检测、收缩性能检测,检测结果显示其综合性能较好,能够为水泥稳定碎石混合料的合理应用提供有效参考。

关键词：抗裂型水泥稳定碎石配合比性能检测

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localized space-tim e method of fundamental solutions for three-dimensional transient diffusion problem

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Acta Mechanica Sinica 2020年第5期36卷 1051-1057,I0002页

作者： l.qiu J.lin Q.-H.Qin W.Chen International Center for Simulation Software in Engineering and Sciences College of Mechanics and MaterialsHohai UniversityNanjing 210098China College of Engineering and Computer Science Australian National UniversityCanberraACT 2601Australia State Key laboratory of Mechanical Behavior and System Safety of traffic Engineering Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China State Key laboratory of Acoustic Institute of AcousticsChinese Academy of SciencesBeijing 100190China

A localized space-time method of fundamental solutions(lStMFS)is extended for solving three-dimensional transient diffusion problems in this *** interval segmentation in temporal direction is developed for the accurate simulation of long-time-dependent diffusion *** the lStMFS,the whole space-time domain with nodes arranged i divided into a series of overlapping subdomains with a simple *** each subdomain,the conventional method of fundamental solutions is utilized and the coefficients associated with the considered domain can be explicitly *** calculating a combined sparse matrix system,the value at any node inside the space-time domain can be *** experi-ments demonstrate that high accuracy and efficiency can be simultaneously achieved via the lStMFS,even for the problems defined on a long-time and quite complex computational domain.

关键词： localized spacetime method of fundamental solutions Meshless method long-time evolution transient diffusion

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Architecture of Platonic and Archimedean polyhedral links

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Science China Chemistry 2008年第1期51卷 13-18页

作者： qiu WenYuan ZHAI XinDong qiu YuanYuan Department of Chemistry State Key Laboratory of Applied Organic ChemistryLanzhou UniversityLanzhou 730000China Faculty of Arts and Social Sciences The National University of SingaporeSG 117570Singapore

A new methodology for understanding the construction of polyhedral links has been developed on the basis of the Platonic and Archimedean solids by using our method of the ‘three-cross-curve and dou- ble-twist-line covering’. there are five classes of polyhedral links that can be explored: the tetrahedral and truncated tetrahedral links; the hexahedral and truncated hexahedral links; the dodecahedral and truncated dodecahedral links; the truncated octahedral and icosahedral links. Our results show that the tetrahedral and truncated tetrahedral links have t symmetry; the hexahedral and truncated hexahedral links, as well as the truncated octahedral links, O symmetry; the dodecahedral and truncated dodeca- hedral links, as well as the truncated icosahedral links, I symmetry, respectively. this study provides further insight into the molecular design, as well as theoretical characterization, of the DNA and protein catenanes.

关键词： knot theory polyhedron truncated polyhedron polyhedral link DNA catenane protein catenane

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A Multiple Feature Approach for Disorder Normalization in Clinical Notes

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Wuhan University Journal of Natural Sciences 2016年第6期21卷 482-490页

作者： lü Chen CHEN Bo lü Chaozhen qiu likun JI Donghong School of Computer Wuhan University Department of Chinese language and literature Hubei University of Art and Science Shandong Key lab of language Resource Development and Application Ludong University

In this paper we propose a multiple feature approach for the normalization task which can map each disorder mention in the text to a unique unified medical language system（UMlS）concept unique identifier（CUI）. We develop a two-step method to acquire a list of candidate CUIs and their associated preferred names using UMlS API and to choose the closest CUI by calculating the similarity between the input disorder mention and each candidate. the similarity calculation step is formulated as a classification problem and multiple features（string features,ranking features,similarity features,and contextual features） are used to normalize the disorder mentions. the results show that the multiple feature approach improves the accuracy of the normalization task from 32.99% to 67.08% compared with the Meta Map baseline.

关键词： natural language processing disorder normalization levenshtein distance semantic composition multiple features

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Recent progress and future prospects of oil-absorbing materials

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Chinese Journal of Chemical Engineering 2019年第6期27卷 1282-1295页

作者： tao Zhang Zhangdi li Yuanfei lü Yu liu Dongya Yang qiurong li Fengxian qiu Institute of Green Chemistry and Chemical technology School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013China School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China School of Environmental and Chemical Engineering Hebei Key Laboratory of Applied ChemistryYanshan UniversityQinhuangdao 066004China

Oil and organic solvent contamination, derived from oil spills and organic solvent leakage, has been recognized as one of the major environmental issues imposing a serious threat to both human and ecosystem health. Among the various presented technologies applied for oil/water separation, oil absorption process has been explored widely and offers satisfactory results especially with surface modified oil-absorbing material and/or hybrid absorbents. In this review, we summarize the recent research activities involved in the designing strategies of oil-absorbing absorbents and their application in oil absorption. then, an extensive list of various oil-absorbing materials from literature, including polymer materials, porous inorganic materials and biomass materials, has been compiled and the oil adsorption capacities toward various types of oils and organic solvents as available in the literature are presented along with highlighting and discussing the various factors involved in the designing of oil-absorbing absorbents tested so far for oil/water separation. Finally, some future trends and perspectives in oil-absorbing material are outlined.

关键词： Oil/water separation Oil-absorbing material Superhydrophobic Hydrid absorbents

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