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Future Physics Programme of BESⅢ

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Chinese Physics C 2020年第4期44卷 I0001-I0004,1-102页

作者： M.Ablikim M.N.Achasov P.Adlarson S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren j.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi j Biernat j.Bloms I.Boyko R.A.Briere L.Calibbi H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin j.Chai j.F.Chang W.L.Chang j.Charles G.Chelkov Chen G.Chen H.S.Chen j.C.Chen M.L.Chen S.j.Chen Y.B.Chen H.Y.Cheng W.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai j.P.Dai X.C.Dai A.Dbeyssi D.Dedovich z.Y.Deng A.Denig Denysenko M.Destefanis S.Descotes-Genon F.De Mori Y.Ding C.Dong j.Dong L.Y.Dong M.Y.Dong z.L.Dou S.X.Du S.I.Eidelman j.z.fan j.fang S.S.fang Y.fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.L.Gao Y.Gao Y.Gao Y.G.Gao z.Gao B.Garillon I.Garzia E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu Y.T.Gu A.Q.Guo F.K.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held Y.K.Heng Y.R.Hou z.L.Hou H.M.Hu j.F.Hu T.Hu Y.Hu G.S.Huang j.S.Huang X.T.Huang X.z.Huang z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.ji Q.P.ji X.B.ji X.L.ji H.L.jiang X.S.jiang X.Y.jiang j.B.jiao z.jiao D.P.jin S.jin Y.jin T.johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth M.G.Kurth W.Kuhn j.S.Lange P.Larin L.Lavezzi H.Leithoff T.Lenz C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.j.Li j.C.Li j.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li X.H.Li X.L.Li X.N.Li X.Q.Li z.B.Li H.Liang H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.z.Liao j.Libby C.X.Lin D.X.Lin Y.j.Lin B.Liu B.j.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu j.B.Liu j.Y.Liu K.Y.Liu Ke Liu Q.Liu S.B.Liu T.Liu X.Liu X.Y.Liu Y.B.Liu z.A.Liu zhiqing Liu Y.F.Long X.C.Lou H.j.Lu j.D.Lu j.G.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X. Institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced Science and Technology Beijing 100190China COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of Science and Technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Ferrara I-44122FerraraItaly Institute of Physics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China Liaoning University Shenyang 110036China Nanjing Normal University Nanjing 210023China Nanjing University Nanjing 210093China Nankai University Tianjin 300071China Peking University Beijing 100871China Shandong University Jinan 250100China Shanghai

There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XYz states at BESⅢ and B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related X(1835) meson state at BESⅢ, as well as the threshold measurements of charm mesons and charm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BESⅢ during the remaining operation period of BEPCⅡ. This survey will help in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possible upgrade of BEPCⅡ to higher luminosity.

关键词： meson hadron optimization

Evidence for the decays of ∧_c^+→∑^+η and ∑^+η’

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Chinese Physics C 2019年第8期43卷 15-23页

作者： M.Ablikim F.F.An Q.An Y.Bai Y.Ban H.Cai X.Cai G.F.Cao j.F.Chang G.Chen H.S.Chen j.C.Chen M.L.Chen P.L.Chen S.j.Chen Y.B.Chen W.Cheng H.LDai j.P.Dai z.Y.Deng Y.Ding C.Dong j.Dong L.Y.Dong M.Y.Dong z.L.Dou S.X.Du P.F.Duan j.z.fan j.fang S.S.fang Y.fang C.Q.Feng C.D.Fu Y.Fu Q.Gao X.L.Gao Y.Gao Y.G.Gao z.Gao L.Gong W.X.Gong L.M.Gu M.H.Gu Y.T.Gu A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo S.Han X.Q.Hao K.L.He Y.K.Heng z.L.Hou H.M.Hu j.F.Hu T.Hu Y.Hu G.S.Huang j.S.Huang X.T.Huang X.z.Huang z.L.Huang Q.ji Q.P.ji X.B.ji X.L.ji X.S.jiang X.Y.jiang j.B.jiao z.jiao D.P.jin S.jin Y.jin X.S.Kang B.C.Ke C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.j.Li j.C.Li j.W.Li Ke Li Lei Li P.L.Li P.R.Li Q.Y.Li T.Li W.D.Li W.G.Li X.L.Li X.N. Li X.Q.Li z.B.Li H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.z.Liao C.X.Lin D.X.Lin B.Liu B.j.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu fang Liu Feng Liu H.B.Liu H.L.Liu H.M.Liu Huanhuan Liu Huihui Liu j.B.Liu j.Y.Liu K.Liu K.Y.Liu Ke Liu Q.Liu S.B.Liu X.Liu Y.B.Liu z.A.Liu zhiqing Liu Y.F.Long X.C.Lou H.j.Lu j.D.Lu j.G.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo T.Luo X.L.Luo X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma Y.j.Mao z.P.Mao z.X.Meng j.Min T.j.Min X.H.Mo Y.j.Mo z.Ning S.L.Niu S.L.Olsen Q.Ouyang Y.Pan H.P.Peng j.L.Ping R.G.Ping H.R.Qi M.Qi T.Y.Qi S.Qian C.F.Qiao N.Qin z.H.Qin j.F.Qiu S.Q.Qu G.Rong W.Shan X.Y.Shan M.Shao C.P. Shen P.X.Shen X.Y.Shen H.Y.Sheng X.Shi j.j.Song X.Y.Song G.X.Sun j.F.Sun L.Sun S.S.Sun X.H.Sun Y.j.Sun Y.K.Sun Y.z.Sun z.j.Sun z.T.Sun Y.T.Tan C.j.Tang G.Y.Tang X.Tang B.Wang B.L.Wang C.W.Wang D.Y.Wang Dan Wang K.Wang L.L.Wang L.S.Wang M.Wang Meng Wang P.Wang P.L.Wang W.P.Wang X.F.Wang Y.Wang Y.F.Wang z.Wang z.G.Wang z.Y.Wang zongyuan Wang D.H.Wei S.P.Wen L.H.Wu L.j.Wu z.Wu L.Xia Y.Xia D.Xiao Y.j.Xiao z.j.Xiao Y.G.Xie Y.H.Xie X.A.Xiong Q.L.Xiu G.F.Xu j.j.Xu L.Xu Q.j.Xu Q.N.Xu X.P.Xu F.Yan L.Yan w.B.Yan W.C.Yan Y.H.Yan H.j.Yang H.X.Yang L.Yang S.L.Yang Y.H.Yang Y.X.Yang Yifan Yang z.Q.Yang M.Ye M.H.Ye j.H.Yin z.Y.You B.X.Yu C.X.Yu j.S.Yu C.z.Yuan Y.Yuan Y.zeng B.X.zhang B.Y.zhang Institute of High Energy Physics G.I.Budker Institute of Nuclear Physics SB RAS(BINP) the Novosibirsk State University Helmholtz Institute Mainz Bochum Ruhr-University University of Turin INFN State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Southeast University joint Institute for Nuclear Research INFN Laboratori Nazionali di Frascati Peking University Institute of Physics and Technology Indiana University Bloomington Carnegie Mellon University johannes Gutenberg University of Mainz INFN Sezione di Ferrara Wuhan University Ankara University University of Chinese Academy of Sciences Istanbul Bilgi University the Moscow Institute of Physics and Technology the Functional Electronics Laboratory Tomsk State University University of South China Nanjing University Shanghai jiao Tong University Key Laboratory for Particle Physics Astrophysics and CosmologyMinistry of EducationShanghai Key Laboratory for Particle Physics and CosmologyInstitute of Nuclear and Particle Physics Liaoning University Nankai University zhengzhou University Tsinghua University University of Ferrara University of Eastern Piedmont Central China Normal University University of Minnesota Minneapolis GSI Helmholtzcentre for Heavy Ion Research GmbH Guangxi University Nanjing Normal University KVI-CART University of Groningen Henan Normal University University of Hawaii Honolulu Shandong University University of the Punjab University of Muenster Uppsala University Huangshan College University of jinan justus-Liebig-Universitaet Giessen II.Physikalisches Institut Istanbul Arel University Soochow University Beijing Institute of Petrochemical Technology China Center of Advanced Science and Technology Sun Yat-Sen University Sichuan University Guangxi Normal University Indian Institute of Technology Madras Shanxi University Henan University of Science and Technology Lanzhou University zhejiang University Fudan University Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)and Institute of

We study the hadronic decays of ∧c+ to the final states ∑+η and ∑+η’,using an e+e-annihilation data sample of 567 pb-1 taken at a center-of-mass energy of 4.6 GeV with the BESIII detector at the BEPCⅡ *** find evidence for the decays ∧c+→∑+η and ∑+η’ with statistical significance of 2.5σ and 3.2σ,*** to the reference decays ∧c+→∑+π0 and ∑+ω,we obtain the ratios of the branching fractions■and ■to be 0.35±0.16±0.02 and 0.86±0.34±0.04,*** upper limits at the 90% confidence level are set to be■and■.Using BESIII measurements of the branching fractions of the reference decays,we determine B（∧c+→∑+η）=（0.41±0.19±0.05）%（<0.68%）and B（∧c+→∑+η’）=（1.34±0.53 ±0.19）%（<1.9%）.Here,the first uncertainties are statistical and the second *** obtained branching fraction of ∧c+→∑+η is consistent with the previous measurement,and the branching fraction of ∧c+→∑+η’ is measured for the first time.

关键词： charmed baryon ∧c^+ decays branching fractions

Observation of e^+e^-→D_s^+■^((*)0)K^- and study of the P-wave D_s mesons

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Chinese Physics C 2019年第3期43卷 5-16页

作者： M.Ablikim M.N.Achasov S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren D.W.Bennett j.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi I.Boyko R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao S.A.Cetin j.Chai j.F.Chang W.L.Chang G.Chelkov G.Chen H.S.Chen j.C.Chen M.L.Chen S.j.Chen Y.B.Chen W.S.Cheng G.Cibinetto F.Cossio H.L.Dai j.P.Dai A.Dbeyssi D.Dedovich z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding C.Dong j.Dong L.Y.Dong M.Y.Dong z.L.Dou S.X.Du j.z.fan j.fang S.S.fang Y.fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.L.Gao Y.N.Gao Y.G.Gao z.Gao B.Garillon I.Garzia A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu S.Gu Y.T.Gu A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov z.Haddadi S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held Y.K.Heng z.L.Hou H.M.Hu j.F.Hu T.Hu Y.Hu G.S.Huang j.S.Huang X.T.Huang X.z.Huang z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.ji Q.P.ji X.B.ji X.L.ji H.L.jiang X.S.jiang X.Y.jiang j.B.jiao z.jiao D.P.jin S.jin Y.jin T.johansson N.Kalantar-Nayestanaki X.S.Kang M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth W.Kühn j.S.Lange P.Larin L.Lavezzi H.Leithoff C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.j.Li j.C.Li j.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li X.L.Li X.N.Li X.Q.Li z.B.Li H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.z.Liao j.Libby C.X.Lin D.X.Lin B.Liu B.j.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu fang Liu Feng Liu H.B.Liu H.L Liu H.M.Liu Huanhuan Liu Huihui Liu j.B.Liu j.Y.Liu K.Y.Liu Kai Liu Ke Liu Q.Liu S.B.Liu X.Liu Y.B.Liu z.A.Liu zhiqing Liu Y.F.Long X.C.Lou H.j.Lu j.D.Lu j.G.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma F.E.Maas M.Maggiora S.Maldaner Q.A.Malik A.Mangoni Y.j.Mao z.P.Mao S.Marcello z.X.Meng j.G.Messchendorp G.Mezzadri j.Min T.j.Min R.E.Mitchell X.H.Mo Y Institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced Science and Technology Beijing 100190China COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of Science and Technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Ferrara I-44122FerraraItaly Institute of Physics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China Liaoning University Shenyang 110036China Nanjing Normal University Nanjing 210023China Nanjing University Nanjing 210093China Nankai University Tianjin 300071China Peking University Beijing 100871China Shandong University Jinan 250100China Shanghai

Studies of e^+e~→D_s^+■^((*)0)K^-and the P-wave charmed-strange mesons are performed based on an e^+e^-collision data sample corresponding to an integrated luminosity of 567 pb^(-1) collected with the BESIII detector at s^(1/2)=4.600 GeV. The processes of e^+e^-→D_s^+■^(*0)K^- and D_s^+■~0K^- are observed for the first time and are found to be dominated by the modes D_s^+D_(s1)(2536)^-and D_s^+D_(s2)~*(2573)^-, respectively. The Born cross sections are measured to be σ~B(e^+e^-→D_s^+■^(*0)K^-) =(10.1±2.3±0.8) pb and σ~B(e^+e^-→D_s^+■~0K^-) =(19.4±2.3± 1.6) pb, and the products of Born cross section and the decay branching fraction are measured to be σ~B(e^+e^-→D_s^+D_(s1)(2536)^-+c.c.)·B(D_(s1)(2536)^-→■^(*0)K^-)=(7.5±1.8±0.7) pb and σ~B(e^+e^-→D_s^+D_(s2)~*(2573)^-+ c.c.)·B(D_(s2)~*(2573)^-→■~0 K^-)=(19.7 ± 2.9 ±2.0) pb. For the D_(s1)(2536)^-and D_(s2)~*(2573)^-mesons, the masses and widths are measured to be M(D_(s1)(2536)^-)=(2537.7±0.5 ±3.1) MeV/c2, Γ(D_(s1)(2536)^-) =(1.7 ±1.2 ±0.6)MeV, and M(D_(s2)~*(2573)^-)=(2570.7±2.0 ±1.7) MeV/c^2, Γ(D_(s2)~*(2573)^-)=(17.2 ±3.6 ±1.1) MeV. The spin-parity of the D_(s2)~*(2573)^-meson is determined to be j^p= 2^+. In addition, the processes e^+e^-→D_s^+■^((*)0)K^-are searched for using the data samples taken at four(two) center-of-mass energies between 4.416(4.527) and 4.575 GeV, and upper limits at the 90% confidence level on the cross sections are determined.

关键词： cross section P-wave D_s mesons resonance parameters spin-parity BESIII

我们都是“同时代人”——如何建构当代文学价值共同体的反思

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当代文坛 2025年第1期 77-81页

作者：丁帆南京大学文学院

“同时代人”是一个超越年龄、时空的广义内涵的存在,它打破了生理年龄和朝代更迭,以代际划分的“同时代人”的陈见,用一种具有深刻和前瞻意义的理念,聚合成一种具有“当代性”的切分方法,以跨越代际的共同价值观来重塑“同时代人”群体... 详细信息

“同时代人”是一个超越年龄、时空的广义内涵的存在,它打破了生理年龄和朝代更迭,以代际划分的“同时代人”的陈见,用一种具有深刻和前瞻意义的理念,聚合成一种具有“当代性”的切分方法,以跨越代际的共同价值观来重塑“同时代人”群体,以此作为解决创作困囿和批评迷惘的突破口。“我们可以使自己成为这些文本的同时代人”的命题,才是需要正视的最本质的问题所在。当下的“同时代人”,既要以史为鉴,从历史的“同时代人”的思想宝库中,汲取属于我们这个时代的相对统一价值观,同时还要引领更多能够聚合在同一价值观下的“同时代人”,发出对整个世界的批判性哲学诘问,这也是改“未完成的现代性”为“当代性”关键词的理由,希冀由此而触及对当代文学治史观念的一种新观念和新方法,在“同时代人”旗帜下,建构起一种基本的人文价值观和学术守则。

关键词： “同时代人” “当代性” 文学价值共同体 “真理性”

Remarkably high fracture toughness of HfNbTaTizr refractory high-entropy alloy

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journal of Materials Science & Technology 2022年第28期123卷 70-77页

作者： X.j.fan R.T.Qu z.F.zhang Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215132China

High-entropy alloys(HEAs)with face-centered cubic(FCC)phase such as CoCrFeMnNi or CoCrNi generally exhibit ultra-high fracture toughness but relatively low *** contrast,body-centered cubic(BCC)HEAs often display higher strengths,but the few reports on fracture toughness measurement demonstrate low toughness *** we show that the BCC HfNbTaTizr refractory HEA,which possesses a combination of high strength,good tensile ductility and excellent high-temperature properties,also exhibits a remarkably high fracture *** using the"single specimen"compliance method for j-integral measurement according to the ASTM E1820–17 standard,its fracture toughness K_(jIC)was experimentally determined to be 210 MPa m^(1/2),which renders this HEA among the toughest metallic *** excellent damage tolerance makes the HEA promising for applications as high-temperature structural materials such as in aerospace field.

关键词： High-entropy alloys BCC structure Fracture toughness j-integral

IN SITU PROCESSING OF Al_(2)O_(3) WHISKERS REINFORCED Ti-Al INTERMETALLIC COMPOSITES

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Acta Metallurgica Sinica(English Letters) 2006年第6期19卷 432-440页

作者： F.Wang z.K.fan j.F.zhu School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China School of Materials Science and Engineering Shaanxi University of Science and TechnologyXianyang 712081China

In situ Al2O3 whiskers reinforced Ti-Al intermetallic composites were fabricated at ~1200℃ by reaction sintering of cold-consolidated fillets consisting mainly of Ti, Al, and different additives. The phases and microstructures of the sintered composites were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS). The process of synthesis was investigated using differential thermal analysis (DTA). The effects of processing parameters and additives on the microstructures of the composites and the development of whisker were examined. It is found that the morphology of the whisker is strongly influenced by the additives, the exothermal reaction process, and the processing parameters.

关键词： in situ Al2O3 whisker Ti-Al intermetallic composite additive reaction process

Modulators for Terahertz Communication: The Current State of the Art

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Research 2019年第1期2019卷 895-916页

作者： z.T.Ma z.X.Geng z.Y.fan j.Liu H.D.Chen College of Science Minzu University of ChinaBeijing 100081China School of Information Engineering Minzu University of ChinaBeijing 100081China State Key Laboratory for Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

With the increase of communication frequency,terahertz(THz)communication technology has been an important research feld;particularly the terahertz modulator is becoming one of the core devices in THz communication *** modulation performance of a THz communication system depends on the characterization of THz *** modulators based on diferent principles and materials have been studied and ***,they are still on the way to practical application due to low modulation speed,narrow bandwidth,and insufcient modulation ***,we review the research progress of THz modulator in recent years and evaluate devices critically and *** focus on the working principles such as electric,optical,optoelectrical,thermal,magnetic,programmable metamaterials and nonlinear modulation methods for THz wave with semiconductors,metamaterials,and 2D materials(such as graphene,molybdenum disulfde,and tungsten disulfde).Furthermore,we propose a guiding rule to select appropriate materials and modulation methods for specifc applications in THz communication.

关键词： modulator communication narrow

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习近平文化思想科学体系阐释论纲

新疆师范大学学报（哲学社会科学版） 2025年第1期46卷 16-33,F0002页

作者：范玉刚山东大学文艺美学研究中心山东济南250100 南方科技大学全球城市文明典范研究院广东深圳518055

习近平文化思想是逻辑自恰、相互贯通、结构完整并集时代性、系统性、原创性于一体的开放性科学体系。深刻把握和领会习近平文化思想的核心要义与主导逻辑,需要建构具有有效性的理论阐释框架。文本通过提炼五个重大学术命题,即坚持党对... 详细信息

习近平文化思想是逻辑自恰、相互贯通、结构完整并集时代性、系统性、原创性于一体的开放性科学体系。深刻把握和领会习近平文化思想的核心要义与主导逻辑,需要建构具有有效性的理论阐释框架。文本通过提炼五个重大学术命题,即坚持党对文化工作的全面领导和巩固党的文化领导权,坚定文化自信、建设社会主义文化强国,在不断健全文化体系中增强国家文化软实力,以“两个结合”特别是“第二个结合”引领中华文明发展,在文明互鉴中增强中华文明的传播力影响力,以此为四梁八柱构建阐释习近平文化思想科学体系的理论框架。

关键词：习近平文化思想科学体系文化基本理论重大学术命题理论框架

Using airbrushes to pattern reagents for microarrays and paper-fluidic devices

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Microsystems & Nanoengineering 2017年第1期3卷 45-51页

作者： Christopher L.Cassano Teodor z.Georgiev z Hugh fan Interdisciplinary Microsystems Group Department of Mechanical and Aerospace EngineeringUniversity of FloridaP.O.Box 116250GainesvilleFL 32611USA j.Crayton Pruitt Family Department of Biomedical Engineering University of FloridaP.O.Box 116131GainesvilleFlorida 32611USA Department of Chemistry University of FloridaP.O.Box 117200GainesvilleFL 32611USA Sandia National Laboratory P.O.Box 5800AlbuquerqueNM 87185USA

We report using an airbrush to pattern a number of reagents,including small molecules,proteins,DNA,and conductive microparticles,onto a variety of mechanical substrates such as paper and *** is more economical and easier to perform than many other patterning methods available(for example,inkjet printing).In this work,we investigated the controllable parameters that affect patterned line width and studied their mechanisms of action,and we provide examples of possible *** airbrushing approach allowed us to pattern lines and dot arrays from hundreds ofμm to tens of mm with length scales comparable to those of other patterning *** applications,enzymatic assays and DNA hybridization,were chosen to demonstrate the compatibility of the method with *** airbrushing method holds promise in making paper-based platforms less expensive and more accessible.

关键词： airbrush paper-fluidics fabrication microarrays lateral flow assays chemiluminescence