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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.l.u k.Y.liu k.l.u 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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Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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chinese Physics c 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis x.c.Ai R.Aliberti A.Amoroso q.An Y.Bai O.Bakina I.Balossino Y.Ban h.-R.Bao V.Batozskaya k.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann h.cai x.cai A.calcaterra G.F.cao N.cao S.A.cetin J.F.chang w.l.chang G.R.che G.chelkov c.chen c.h.chen chao chen G.chen h.S.chen M.l.chen S.J.chen S.l.chen S.M.chen T.chen x.R.chen x.T.chen Y.B.chen Y.q.chen Z.J.chen Z.Y.chen S.k.choi x.chu G.cibinetto F.cossio J.J.cui h.l.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich c.q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang w.x.Fang Y.Fang Y.q.Fang R.Farinelli l.Fava F.Feldbauer G.Felici c.q.Feng J.h.Feng Y.T.Feng k.Fischer M.Fritsch c.D.Fu J.l.Fu Y.w.Fu h.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia P.T.Ge Z.w.Ge c.Geng E.M.Gersabeck B.Ding x.x.Ding Y.Ding Y.Ding J.Dong l.Y.Dong M.Y.Dong x.Dong M.c.Du S.x.Du Z.h.Duan P.Egorov Y.h.Fan J.Fang JA.Gilman k.Goetzen l.Gong w.x.Gong w.Gradl S.Gramigna M.Greco M.h.Gu Y.T.Gu c.Y.Guan Z.l.Guan A.q.Guo l.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez k.l.han T.T.han x.q.hao F.A.harris k.k.he k.l.he F.h.heinsius c.h.heinz Y.k.heng c.herold T.holtmann P.c.hong G.Y.hou x.T.hou Y.R.hou Z.l.hou B.Y.hu h.M.hu J.F.hu T.hu Y.hu G.S.huang k.x.huang l.q.huang x.T.huang Y.P.huang T.hussain F.h\"olzken N.h\"usken N.in der wiesche M.Irshad J.Jackson S.Janchiv J.h.Jeong q.Ji q.P.Ji w.Ji x.B.Ji x.l.Ji Y.Y.Ji x.q.Jia Z.k.Jia D.Jiang h.B.Jiang P.c.Jiang S.S.Jiang T.J.Jiang x.S.Jiang Y.Jiang J.B.Jiao J.k.Jiao Z.Jiao S.Jin Y.Jin M.q.Jing x.M.Jing T.Johansson S.kabana N.kalantar-Nayestanaki x.l.kang x.S.kang M.kavatsyuk B.c.ke V.khachatryan A.khoukaz R.kiuchi O.B.k.l.u B.kopf M.kuessner x.kui A.kupsc w.k\"uhn J.J.lane P.larin l.lavezzi T.T.lei Z.h.lei h.leithoff M.lellmann T.lenz c.li c.li c.h.li cheng li D.M.li F.li G.li h.li h.B.li h.J.li h.N.li hui li J.R.li J.S.li k.li l.J.li l.k.li lei li M.h.li P.R.li q.M.li q.x.li R.li S.x.li T.li w.D.li w.G.li x.li x.h.li x.l.li x.Y.li Y Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang university Beijing 100191China Bochum Ruhr-university D-44780 BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia carnegie Mellon university PittsburghPennsylvania 15213USA central china Normal university Wuhan 430079China central South university Changsha 410083China china center of Advanced Science and Technology Beijing 100190China china university of Geosciences Wuhan 430074China chung-Ang university Seoul06974Republic of Korea cOMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200433China GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China hangzhou Normal university Hangzhou 310036China hebei university Baoding 071002China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal university Xinxiang 453007China henan university Kaifeng 475004China henan university of Science and Technology Luoyang 471003China henan university of Technology Zhengzhou 450001China 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 INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia university Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the cP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the ckM angleγ(ϕ_(3))via the B^(−)→Dk^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis cP-even fraction

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由超拍电子伏特加速器产生的超高能伽马射线气泡

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Science Bulletin 2024年第4期69卷 449-457页

作者： lhAASO collaboration Zhen cao chuandong Gao cong li Ruo-Yu liu Ruizhi Yang 不详 key laboratory of Particle Astrophyics&Experimental Physics Division&computing center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of chinese Academy of Sciences Beijing 100049China TIANFu cosmic Ray Research center ChengduChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China university of Science and Technology of china Hefei 230026China

we report the detection of aγ-ray bubble spanning at least 100deg2 in ultra-high energy(uhE)up to a few PeV in the direction of the star-forming region cygnus x,implying the presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form with the photon indexΓ(E)=(2.71±0.02)+(0.11±0.02)×log10(E/10 TeV)is found fitting the gamma-ray energy spectrum of the bubble *** sources,“hot spots”correlated with very massive molecular clouds,and a quasi-spherical amorphousγ-ray emitter with a sharp central brightening are observed in the *** the core of~0.5°,spatially associating with a region containing massive OB association(cygnus OB2)and a microquasar(cygnus x-3),as well as previously reported multi-TeV sources,an enhanced concentration of uhEγ-rays is observed with 2 photons at energies above 1 *** general feature of the bubble,the morphology,and the energy spectrum,are reasonably reproduced by the assumption of a particle accelerator in the core,continuously injecting protons into the ambient medium.

关键词： cosmic rays γ-rays Interstellar medium Star cluster

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Optimization of performance of the kM2A full array using the crab Nebula

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chinese Physics c 2024年第6期48卷 169-178页

作者：曹臻 F.Aharonian 安琪阿西克古白云翔包逸炜 D.Bastieri 毕效军毕玉江蔡金庭曹晴曹文羽曹喆常进常劲帆陈尚明陈恩生陈亮陈林陈龙陈明君陈玛丽陈起辉陈素弘陈天禄陈阳程宁程耀东崔明阳崔树旺崔晓红崔昱东戴本忠代洪亮戴子高单增罗布 D.della Volpe 董绪强段凯凯樊军辉范一中方军方堃冯存峰封莉冯少辉丰晓婷冯有亮 S.Gabici 高博高川东高林青高启高卫高伟康葛茂茂耿利斯 G.Giacinti 龚光华苟全补顾旻皓郭福来郭晓磊郭义庆郭莹莹韩毅昂何会海贺昊宁何佳银何新波何钰 M.heller 贺远强侯博文侯超侯贤胡红波胡铨胡世聪黄代绘黄天奇黄文俊黄性涛黄晓渊黄勇黄志成季筱璐贾焕玉贾康江琨姜晓巍姜泽军金敏康明铭柯通 D.kuleshov.k.kurinov 李兵兵李澄李骢李丹李飞李海波李会财李华阳李军李剑李捷李凯李文龙李文莲李秀荣李昕李一卓李哲黎卓梁恩维梁云峰林苏杰刘冰刘成刘栋刘虎刘海东刘佳刘江来刘金艳刘茂元柳若愚刘四明刘伟刘怡刘以农鲁睿罗晴吕洪魁马伯强马玲玲马欣华毛基荣闵振 w.Mitthumsiri 穆慧君南云程 A.Neronov 区子维庞彬宇 P.Pattarakijwanich 裴致远齐孟尧祁业情乔冰强秦家军 D.Ruffolo A.Sáiz D.Semikoz 邵澄宇邵琅 O.Shchegolev 盛祥东舒富文宋慧超 Yu.V.Stenkin V.Stepanov 苏扬孙秦宁孙晓娜孙志斌谭柏轩唐庆文唐泽波田文武王超王昌贝王广威王洪光王惠惠王建成汪凯王利苹王玲玉王培汉王冉王为王祥高王祥玉王阳王玉东王岩谨王忠海王仲翔王振王铮韦大明魏俊杰魏永健文韬吴超勇吴含荣武莎吴雪峰吴雨生席邵强夏捷夏君集项光漫肖迪泫肖刚辛广广辛玉良邢祎熊峥徐东莲徐仁峰徐仁新徐伟立薛良闫大海颜景志颜田杨朝文杨帆杨冯帆杨何文杨佳盈杨莉莉杨明洁杨睿智杨深邦姚玉华姚志国叶一锰尹丽巧尹娜游晓浩游智勇于艳红袁强岳华曾厚敦曾婷轩曾玮查敏张彬彬张丰张海明张恒英张建立张丽霞张力张鹏飞张佩佩张瑞张少博张少如张寿山张潇张笑鹏张云峰张毅张勇赵兵赵静赵雷赵立志赵世平郑福周斌周浩周佳能周猛周平周荣周勋秀祝成光祝凤荣朱辉朱科军左雄 lhAASO collaboration key laboratory of Particle Astrophyics&Experimental Physics Division&computing center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of chinese Academy of Sciences Beijing 100049China Tianfu cosmic Ray Research center Chengdu 610000China Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Physics P.O.Box 10398069029 HeidelbergGermany State key laboratory of Particle Detection and Electronics China university of Science and Technology of china Hefei 230026China School of Physical Science and Technology&School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China center for Astrophysics Guangzhou UniversityGuangzhou 510006China hebei Normal university Shijiazhuang 050024China key laboratory of Dark Matter and Space Astronomy&key laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Tsung-Dao lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China key laboratory for Research in Galaxies and cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China key laboratory of cosmic Rays(Tibet university) Ministry of EducationLhasa 850000TibetChina National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Physics and Astronomy(Zhuhai)&School of Physics(Guangzhou)&Sino-French Institute of Nuclear Engineering and Technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275China School of Physics and Astronomy Yunnan UniversityKunming 650091China Département de Physique Nucléaire et corpusculaire Facultéde SciencesUniversitéde Genève24 Quai Ernest Ansermet1211 GenevaSwitzerland Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APc Universit'e Paris Cit'eCNRS/IN2P3CEA/IRFUObservat

The full array of the large high Altitude Air Shower Observatory(lhAASO)has been in operation since July *** its kilometer-square array(kM2A),we optimized the selection criteria for very high and ultrahigh energyγ-rays using data collected from August 2021 to August 2022,resulting in an improvement in significance of the detection in the crab Nebula of approximately 15%,compared with that of previous *** the implementation of these new selection criteria,the angular resolution was also significantly improved by approximately 10%at tens of *** aspects of the full kM2A array performance,such as the pointing error,were also calibrated using the crab *** resulting energy spectrum of the crab Nebula in the energy range of 10-1000 TeV are well fitted by a log-parabola model,which is consistent with the previous results from lhAASO and other experiments.

关键词： γ-ray crab Nebula significance

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Origin of colossal Magnetoresistance in Nd1-xcaxMnO3

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电子显微学报 1997年第4期 69-70页

作者： k.l.u\ x.w.wu\ k.h.ahn\ c.l.chien (Dept. of Physics and Astronomy, The johns hopkins university, Baltimore, MD 21218) john q.xiao (Dept. of Physics and Astronomy, university of Delaware, Newark, DE 19716)

ＯｒｉｇｉｎｏｆＣｏｌｏｓａｌＭａｇｎｅｔｏｒｅｓｉｓｔａｎｃｅｉｎＮｄ１－ｘＣａｘＭｎＯ３Ｋ．ＬｉｕＸ．Ｗ．ＷｕＫ．Ｈ．ＡｈｎＣ．Ｌ．Ｃｈｉｅｎ（Ｄｅｐｔ．ｏｆＰｈｙｓｉｃｓａｎｄＡｓｔｒｏｎｏｍｙ，ＴｈｅＪｏｈ... 详细信息

ＯｒｉｇｉｎｏｆＣｏｌｏｓａｌＭａｇｎｅｔｏｒｅｓｉｓｔａｎｃｅｉｎＮｄ１－ｘＣａｘＭｎＯ３Ｋ．ＬｉｕＸ．Ｗ．ＷｕＫ．Ｈ．ＡｈｎＣ．Ｌ．Ｃｈｉｅｎ（Ｄｅｐｔ．ｏｆＰｈｙｓｉｃｓａｎｄＡｓｔｒｏｎｏｍｙ，ＴｈｅＪｏｈｎｓＨｏｐｋｉｎｓＵｎｉｖｅｒｓｉ...

关键词： Nd ca Origin colossal Magnetoresistance x)caxMnO3

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Origin of colossal Magnetoresistance in Nd1-xcaxMnO3

Origin of Colossal Magnetoresistance in Nd1-xCaxMnO3

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1996年中国青年学者物理学讨论会

作者： k.h.ahn c.l.chien john q.xiao Dept.of Physics and Astronomy The johns hopkins university BaltimoreMD 21218 Dept.of Physics and Astronomy university of Delaware NewarkDE 19716

Structural,transport and magnetic properties of NdcaMnO(0≤x≤1)have been studied to probe the consequence of strong lattice distortion and reduced double *** ordering has been observed over a large composition range of 0.30≤x≤*** 0.33≤x≤0.40,at low temperatures,a magnetic field induces a first-order AF semiconductor to FM metal transition,and reduces the resistance by several orders of *** results illustrate the competition between double exchange and mechanisms that promote charge localization.

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Finite Element Prediction of the Thermal conductivity of GNP/Al composites

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Acta Metallurgica Sinica(English letters) 2022年第5期35卷 825-838页

作者： x.S.Yang l.Zhou k.Y.liu Z.Y.liu q.Z.wang B.l.xiao Z.Y.Ma School of Electromechanical and Automotive Engineering Yantai UniversityYantai264005China Shi-changxu Innovation center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

A 3 D multi-scale finite element model was developed to predict the effective thermal conductivity of graphene nanoplatelet(GNP)/Al *** factors influencing the effective thermal conductivity of the GNP/Al composites were investigated,including the orientation,shape,aspect ratio,configuration and volume fraction of *** results show that GNPs shape has a little influence on the thermal conductivity of GNP/Al composites,and composites with elliptic GNPs have the highest thermal *** addition,with increasing the aspect ratio of GNPs,the thermal conductivity of GNP/Al composites increases and finally tends to be *** GNPs configuration strongly influences the thermal conductivity of GNP/Al composites,and the thermal conductivity of the composites with layered GNPs is the highest among the five *** effective thermal conductivity is sensitive to volume fraction of ***,when the volume fraction of layered GNPs reaches 1.54%,the thermal conductivity of GNP/Al composites is as high as 400 w/m *** findings of this study could provide a good theoretical basis for designing high thermal conductivity GNP/Al composites.

关键词： Multi-scale finite element model Thermal conductivity GNP/Al composites Shape Aspect ratio configuration

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Anisotropy of the wear Behavior for carbon Nanotube-Reinforced 6061Al composites

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Acta Metallurgica Sinica(English letters) 2023年第5期36卷 814-826页

作者： x.N.li J.F.Zhang w.h.xue k.Ma P.Y.li Z.Y.liu B.l.xiao D.R.Ni q.Z.wang D.wang Z.Y.Ma School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Shi-changxu Innovation center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

carbon nanotube(cNT)-reinforced 6061Al(cNT/6061Al)composites with directionally aligned cNT were fabricated,and their wear behavior was *** results indicate that the wear properties of cNT/6061Al composites exhibited a significant anisotropy.A certain cNT concentrations(1 wt%and 2 wt%)could effectively improve the wear resistance of cNT/6061Al composites along the cNT circumferential and cNT radial directions for the load transfer,grain refinement and self-lubrication effect of *** Brass{011}andctextures inhibited the load transfer effect of cNT along the cNT radial direction,resulting in a better wear resistance along cNT circumferential direction than cNT radial *** the cNT axial direction,the weak deformability of composites caused by the intensifyingfiber texture was the main reasons for the poor wear resistance of cNT/6061Al composites with increasing cNT concentration.

关键词： carbon nanotube Metal matrix composite wear Anisotropy

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Antiferromagnetic Exchange coupling Through an Amorphous Metallic layer

Antiferromagnetic Exchange Coupling Through an Amorphous Met...

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1996年中国青年学者物理学讨论会

作者： john q.xiao c.l.chien Dept.of Physics and Astronomy university of Delaware NewarkDE 19716 Dept.of physics and Astronomy The johns hopkins university BaltimoreMD 21218

＜正＞Antiferromagnetic（AF）exchange coupling has been observed across an amorphous metallic layer, occurring at a layer thickness of about 9（?）.The high resistivity of the amorphous spacer layer severely reduces the coupling strength,and only the first AF peak can be *** AF coupling has a highly unusual temperature dependence,altogether different from those of crystalline intervening layers.

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布地格福调节c-Jun表达抑制肺泡巨噬细胞NR8383氧化应激损伤的机制研究

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中国临床药理学杂志 2024年第4期40卷 534-538页

作者：张孝侠吴友涛济宁医学院医学检验实验室山东济宁272067 济宁市第二人民医院急诊科山东济宁272049

目的研究布地格福对SD大鼠NR8383氧化应激损伤保护机制。方法将大鼠肺泡巨噬细胞NR8383分为5组:空白组给予无血清k12培养基,不作任何处理;脂多糖组(lPS组)给予2.29μg·ml^(-1) lPS标准品溶液;布地格福组、c-Jun抑制药组(AS601245)、... 详细信息

目的研究布地格福对SD大鼠NR8383氧化应激损伤保护机制。方法将大鼠肺泡巨噬细胞NR8383分为5组:空白组给予无血清k12培养基,不作任何处理;脂多糖组(lPS组)给予2.29μg·ml^(-1) lPS标准品溶液;布地格福组、c-Jun抑制药组(AS601245)、布地格福+c-Jun抑制药组(Budesonide+AS601245)在lPS组基础上分别给予布地格福28.0μl、c-Jun抑制药AS601245 2.50μg、布地格福28.0μl+c-Jun抑制药AS601245 2.50μg。5组细胞均置于无血清k12培养基恒温培养24 h。以细胞计数试剂盒-8(cck-8)法检测24 h细胞凋亡率,以实时荧光定量聚合酶链反应(q-PcR)检测c-Jun mRNA表达,以酶联免疫吸附实验(ElISA)法检测氧化应激损伤因子活性氧(ROS)、8-羟基脱氧鸟苷(8-OhdG)、谷胱甘肽过氧化物酶(GSh-Px)、硫氧还蛋白(TRx-1)表达,以蛋白质印迹(western Blot)法检测各组c-Jun信号通路蛋白的表达。结果与lPS组(29.88±5.98)%相比,布地格福组、c-Jun抑制药组、布地格福+c-Jun抑制药组、空白组24 h细胞凋亡率显著下降[(20.15±6.66)%、(15.39±3.54)%、(12.11±2.55)%和(8.52±1.27)%],在统计学上差异均有统计学意义(均Pc-Jun抑制药组、布地格福+c-Jun抑制药组、lPS组、空白组ROS浓度分别为(3.16±0.19)、(4.15±0.33)、(2.21±0.21)、(6.52±0.36)和(1.06±0.23) u·g^(-1);8-OhdG分别为(10.55±1.23)、(11.14±1.06)、(9.55±1.00)、(15.66±1.99)和(8.27±1.13)ng·ml^(-1);GSh-Px分别为(188.52±12.33)、(200.52±27.97)、(144.52±20.55)、(335.14±30.10)和(126.55±12.52)u·ml^(-1);TRx-1分别为(40.11±6.66)、(50.55±10.07)、(60.25±10.55)、(115.36±20.03)和(16.55±2.33)ng·ml^(-1);c-Jun mRNA相对表达水平分别为0.56±0.03、0.44±0.11、0.25±0.04、0.89±0.12和0.08±0.01;c-Jun/GAPDh蛋白相对表达水平为3.15±0.22、2.36±0.14、1.55±0.13、4.02±0.22和0.88±0.12;与lPS组相比,布地格福组、c-Jun抑制药组、布地格福+c-Jun抑制药组指标差异均显著下降,在统计学上差异均有统计学意义(均Ph-Px、8-OhdG、TRx-1的浓度,其氧化损伤保护机制可能与调控c-Jun蛋白相关。

关键词：布地格福肺泡巨噬细胞慢性阻塞性肺疾病 c-Jun蛋白氧化应激细胞凋亡

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