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Modern treatment of gastric gastrointestinal stromal tumors

World Journal of Gastroenterology 2012年第46期18卷 6720-6728页

作者： Kevin K roggin mitchell C Posner Department of Surgery Pritzker School of Medicine University of Chicago

Gastrointestinal stromal tumors (GIST) are rare mesenchymal smooth muscle sarcomas that can arise anywhere within the gastrointestinal tract. Sporadic mutations within the tyrosine kinase receptors of the interstitial cells of Cajal have been identified as the key molecular step in GIST carcinogenesis. Although many patients are asymptomatic, the most common associated symptoms include: abdominal pain, dyspepsia, gastric outlet obstruction, and anorexia. rarely, GIST can perforate causing life-threatening hemoperitoneum. Most are ultimately diagnosed on cross-sectional imaging studies (i.e., computed tomography and/or magnetic resonance imaging in combination with upper endoscopy. endoscopic ultrasonographic localization of these tumors within the smooth muscle layer and acquisition of neoplastic spindle cells harboring mutations in the c-KIT gene is pathognomonic. Curative treatment requires a complete gross resection of the tumor. Both open and minimally invasive operations have been shown to reduce recurrence rates and improve long-term survival. While there is considerable debate over whether GIST can be benign neoplasms, we believe that all GIST have malignant potential, but vary in their propensity to recur after resection and metastasize to distant organ sites. Prognostic factors include location, size (i.e., > 5 cm), grade (> 5-10 mitoses per 50 high power fields and specific mutational events that are still being defined. Adjuvant therapy with tyrosine kinase inhibitors, such as imatinib mesylate, has been shown to reduce the risk of recurrence after one year of therapy. Treatment of locally-advanced or borderline resectable gastric GIST with neoadjuvant imatinib has been shown to induce regression in a minority of patients and stabilization in the majority of cases. This treatment strategy potentially reduces the need for more extensive surgical resections and increases the number of patients eligible for curative therapy. The modern surgical treatment of

关键词： Gastrointestinal stromal tumors Laparoscopic resections of gastrointestinal stromal tumors Imatinib mesylate Gastrectomy

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Superplastic behavior of a fine-grained Mg-Gd-Y-Ag alloy processed by equal channel angular pressing

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Journal of Magnesium and Alloys 2023年第10期11卷 3815-3828页

作者： A.rezaei r.Mahmudi r.e.Logé School of Metallurgical and Materials engineering College of EngineeringUniversity of TehranTehran 14395-515Iran Laboratory of Thermomechanical Metallurgy-PX Group Chair Ecole Polytechnique Fédérale de Lausanne(EPFL)CH-2002 NeuchâtelSwitzerland

An extruded Mg-6Gd-3Y-1.5Ag(wt%) alloy was processed by 6 passes of equal channel angular pressing(eCAP) at 553 K using route Bc to refine the microstructure. electron back-scattered diffraction(eBSD) analysis showed a fully recrystallized microstructure for the extruded alloy with a mean grain size of 8.6 μm. The microstructure of the eCAP-processed alloy was uniformly refined through dynamic recrystallization(DrX). This microstructure contained fine grains with an average size of 1.3 μm, a high fraction of high angle grain boundaries(HAGBs), and nano-sized Mg_(5)Gd-type particles at the boundaries of the DrXed grains, detected by transmission electron microscopy(TeM). High-temperature shear punch testing(SPT) was used to evaluate the superplastic behavior of both the extruded and eCAP-processed alloys by measuring the strain rate sensitivity(SrS) index(m-value). While the highest m-value for the extruded alloy was measured to be 0.24 at 673 K, the eCAP-processed alloy exhibited much higher m-values of 0.41 and 0.52 at 598 and 623 K, respectively,delineating the occurrence of superplastic flow. Based on the calculated average activation energy of 118 kJ mol^(-1) and m-values close to 0.5, the deformation mechanism for superplastic flow at the temperatures of 598 and 623 K for the eCAP-processed alloys was recognized to be grain boundary sliding(GBS) assisted by grain boundary diffusion.

关键词： Mg-Gd-Y alloys equal channel angular pressing Superplasticity Strain rate sensitivity Grain boundary sliding

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Determination of the number of J/ψ events with inclusive J/ψ decays

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Chinese Physics C 2017年第6期41卷 1-10页

作者：麦迪娜 M.N.Achasov 艾小聪 O.Albayrak M.Albrecht D.J.Ambrose A.Amoroso 安芬芬安琪白景芝 r.Baldini Ferroli 班勇 D.W.Bennett J.V.Bennett M.Bertani D.Bettoni 边渐鸣 F.Bianchi e.Boger I.Boyko r.A.Briere 蔡浩蔡啸 O.Cakir A.Calcaterra 曹国富 S.A.Cetin 常劲帆 G.Chelkov 陈刚陈和生陈海云陈江川陈玛丽陈申见谌炫陈旭荣陈元柏程和平褚新坤 G.Cibinetto 代洪亮代建平 A.Dbeyssi D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis F.De Mori 丁勇董超董静董燎原董明义豆正磊杜书先段鹏飞范荆州方建房双世方馨方易 r.Farinelli L.Fava O.Fedorov F.Feldbauer G.Felici 封常青 e.Fioravanti M.Fritsch 傅成栋高清高鑫磊高旭阳高原宁高榛 I.Garzia K.Goetzen 龚丽龚文煊 W.Gradl M.Greco 顾旻皓顾运厅管颖慧郭爱强郭立波郭玥郭玉萍 Z.Haddadi A.Hafner 韩爽郝喜庆 F.A.Harris 何康林 T.Held 衡月昆侯治龙胡琛胡海明胡继峰胡涛胡誉黄光顺黄金书黄性涛黄勇 T.Hussain 纪全姬清平季晓斌季筱璐姜鲁文江晓山蒋兴雨焦健斌焦铮金大鹏金山 T.Johansson A.Julin N.Kalantar-Nayestanaki 康晓琳康晓珅 M.Kavatsyuk 柯百谦 P.Kiese r.Kliemt B.Kloss 0.B.Kolcu B.Kopf M.Kornicer A.Kupsc W.Kuhn J.S.Lange M.Lara P.Larin C.Leng 李翠李澄李德民李飞李峰云李刚李海波李家才李瑾李科李康李蕾李培荣李启云李腾李卫东李卫国李晓玲李小男李学潜李志兵梁昊梁勇飞梁羽铁廖广睿林德旭刘北江刘春秀刘栋刘福虎刘芳刘峰刘宏邦刘欢欢刘慧慧刘怀民刘杰刘建北刘觉平刘晶译刘凯刘魁勇刘兰雕刘佩莲刘倩刘树彬刘翔刘玉斌刘振安刘智青 H.Loehner 娄辛丑吕海江吕军光卢宇卢云鹏罗成林罗民兴 T.Luo 罗小兰吕晓睿马凤才马海龙马连良马秋梅马天马旭宁马骁妍马玉明 F.e.Maas M.Maggiora 冒亚军毛泽普 S.Marcello J.G.Messchendorp 闵建闵天觉 r.e.mitchell 莫晓虎莫玉俊 C.Morales Morales N.Yu.Muchnoi H.Muramatsu Y.Nefedov F.Nerling I.B.Nikolaev 宁哲 S.Nisar 牛顺利牛讯伊马鹏欧阳群 S.Pacetti 潘越 P.Patteri M.Pelizaeus 彭海平 K.Peters J.Pettersson 平加伦平荣刚 r.Poling V.Prasad 漆红荣祁鸣钱森乔从丰秦丽清覃拈秦小帅秦中华邱进发 K.H.rashid C.F.redmer M.ripka 荣刚 Ch.rosner 阮向东 V.Santoro A.Sarantsev M.Savrie K.Schoenning S.Schumann 单葳邵明沈成平沈培迅沈肖雁盛华义宋维民宋欣颖 S.Sosio S.Spataro 孙功星孙俊峰孙胜森孙勇杰孙永昭孙志嘉孙振田唐昌建唐晓 I.Tapan e.H.Thorndike M.Tiemens M.Ullrich I.Uman G.S.Varner 王斌王滨龙王东王大勇王科王亮亮王灵淑王萌王平王佩良王炜王维平王雄飞王雅迪王贻芳王亚乾王铮王志刚王志宏王至勇 T.Weber 魏代会 P.Weidenkaff 文硕频 U.Wiedner M.Wolke 伍灵慧吴智夏磊夏力钢夏宇肖栋肖浩肖振军谢宇广修青磊许国发徐雷徐庆君徐庆年徐新平严亮鄢文标闫文成颜永红杨海军杨洪勋杨柳杨永栩叶梅叶铭汉殷俊昊俞伯祥喻纯旭俞洁晟苑长征袁文龙袁野 A.Yuncu A.A.Zafar A.Zallo 曾云曾哲张丙新张炳云张驰张长春张达华张宏浩章红宇张佳佳张杰磊张敬庆张家文张建勇张景芝张坤张磊张学尧张瑶张银鸿张宇宁张亚腾 Institute of High energy Physics G.I. Budker Institute of Nuclear Physics SB rAS (BINP) the Novosibirsk State University Carnegie Mellon University Bochum ruhr-University University of rochester University of Turin INFN University of Science and Technology of China State Key Laboratory of Particle Detection and electronics INFN Laboratori Nazionali di Frascati Peking University Indiana University INFN Sezione di Ferrara University of Minnesota Joint Institute for Nuclear research the Moscow Institute of Physics and Technology Wuhan University Ankara University Istanbul Bilgi University the Functional electronics Laboratory Tomsk State University Beihang University Nanjing University Lanzhou University Huangshan College Shanghai Jiao Tong University Helmholtz Institute Mainz Johannes Gutenberg University of Mainz Liaoning University Nankai University Zhengzhou University Tsinghua University University of Ferrara University of eastern Piedmont GSI Helmholtzcentre for Heavy Ion research GmbH Guangxi University Nanjing Normal University KVI-CArT University of Groningen Henan Normal University University of Hawaii Shandong University University of the Punjab Uppsala University Istanbul Arel University Justus-Liebig-Universitaet Giessen Ⅱ. Physikalisches Institut Seoul National University Hangzhou Normal University Beijing Institute of Petrochemical Technology University of Chinese Academy of Sciences Sun Yat-Sen University Sichuan University Guangxi Normal University Shanxi University Central China Normal University Henan University of Science and Technology University of Texas at Dallas Zhejiang University COMSATS Institute of Information Technology INFN and University of Perugia Goethe University Frankfurt the NrC "Kurchatov Institute PNPI Uludag University Near east University Hunan University University of South China Soochow University Institute of Nuclear and Particle Physics Shanghai Key Laboratory for Particle Physics and Cosmology China Center of Advanced Science and Technology Bogazici University Univers

A measurement of the number of J/ψ events collected with the BeSⅢ detector in 2009 and 2012 is performed using inclusive decays of the J/ψ. The number of J/ψ events taken in 2009 is recalculated to be（223.7±1.4）×10^6, which is in good agreement with the previous measurement, but with significantly improved precision due to improvements in the BeSⅢ software. The number of J/ψ events taken in 2012 is determined to be（1086.9±6.0）×10^6. In total, the number of J/ψ events collected with the BeSⅢ detector is measured to be（1310.6±7.0）×10^6, where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible.

关键词： number of J/ψ events BeSⅢ detector inclusive J/ψ events

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Malargüe Site remediation:A Successful Solution for Uranium Mill Tailings

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原子能科学技术 2024年第10期58卷 2088-2094页

作者： BArArI e DíAZ J G GIOMIA KeMPF r A National Atomic energy Commission Av.Del Libertador 8250Ciudad Autónoma de Buenos AiresC1429BNPArgentina

Comisión Nacional de energía Atómica (CNeA) has the responsibility for restoring uranium mining facilities once the operations have ***,within its environmental Program and in compliance with its legal responsibilities,decides to implement a restoration project for all sites related to the mining and processing of uranium *** Malargüe Site is located within the Province of Mendoza in the city of Malargü*** is the first site to successfully complete its *** activities consist of relocation of tailings to an engineering *** tailings management(encapsulation) and rehabilitation of the area was finished in June *** remediation alternative for the ore tailings was selected after conducting comparative studies and submitted the project to the society for *** objective of the encapsulation of the mineral tails is to isolate them from the environment,also proceeding with the decontamination and rehabilitation of the area (landscaping,post-closure monitoring and 20 years monitoring period).encapsulation consisted of the construction of a containment cell for the mine tailings,to isolate them and prevent pollutants from entering the environment through the transfer *** clean the impacted areas,the soil was removed,it was incorporated into the encapsulation,and the filling was carried out with natural soils from the *** prevents radon transfer to the environment,as ^(222)ra is an alpha emitter with a half-life of four days,which produces its own radioactive *** progeny are solids,and when a ^(222)ra nucleus emits an alpha particle into the air,the resulting ^(218)Po nucleus,momentarily electrically charged,adheres to any dust *** prevents the discharge into the air containing radon and also containing dust particles charged with intensely radioactive radon *** tasks mentioned make it possible to decrease radon emanation,reduce radiological risks to the public and pre

关键词： remediation radionuclide transfer tailings encapsulation solution sustainable

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Verification of the 2019 GloSea5 Seasonal Tropical Cyclone Landfall Forecast for east China

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Journal of Meteorological research 2020年第5期34卷 917-925页

作者： Joanne CAMP Philip e.BeTT Nicola GOLDING Chris D.HeWITT Timothy D.mitchell Adam A.SCAIFe Met Office Hadley Centre Exeter EX 13PBUK University of Southern Queensland Toowoomba QLD 4350Australia College of engineering Mathematics and Physical SciencesUniversity of ExeterDevon EX44QFUK

A prototype climate service was developed and trialled in early 2019 to provide seasonal forecast of the June–July–August(JJA) tropical cyclone(TC) landfall risk for the east China region ahead of the forthcoming typhoon *** forecasts were produced in both March and April 2019 and a final forecast was released to the China Meteorological Administration(CMA) on 1 May 2019. The trial service was produced by using the Met Office Global Seasonal forecast system(GloSea5), and a forecast of the western Pacific subtropical high(WPSH) index was used to infer the TC landfall risk based on a simple linear regression between historical model WPSH indices and observed TC landfalls in east China. The forecast method shows significant skill for forecasting the JJA TC landfall risk in east China with up to three-month lead time, with the greatest skill for predictions initialized in May. The 2019 forecast provided good guidance of the near-average TC activity observed in east China in JJA 2019. Success of the forecast adds confidence to an improved climate service ahead of the 2020 typhoon season.

关键词： seasonal forecasting typhoons tropical cyclones(TCs) landfall risk east China western Pacific subtropical high(WPSH)

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Investigating the use of an ionic liquid for rare earth mineral flotation

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Journal of rare earths 2021年第7期39卷 866-874,I0004页

作者： r.Li C.Marion e.r.L.espirtu r.Multani Xiaoqi Sun K.e.Waters Department of Mining and Materials engineering McGill University3610 Rue University.MontrealQuebecH3A 0C5Canada Vale Ontario Operations(Base Metals)18 Rink St.Copper CliffOntario POM 1N0Canada Fujian Institute of research on the Structure of Matter Chinese Academy of Sciences155 Yangqiao Road WestFuzhou 350002China

Common collectors for rare earth mineral(reM) flotation,which include carboxylates and hydroxamates,face problems such as being non-selective and sensitive to impurity ions.A type of ionic liquid(IL),tetraethylammonium mono-(2-ethylhexyl)2-ethylhexyl phosphonate([N_(2222)][eHeHP]),has been investigated previously for rare earth elements(ree) solvent extraction,and was proven to be selective and *** this work,[N_(2222)][eHeHP] was evaluated as a collector in bastnasite(a primary reM source for ree production) flotation for the first *** results were compared with quartz and hematite,two common gangue minerals in reM *** potential measurements and Fouriertransform infrared spectroscopy(FT-Ir) were completed to investigate the surface chemical properties involved in the flotation of these minerals using this *** findings were compared with microflotation ***-Ir and zeta potential measurements suggest adsorption of the collector’s phosphonate group onto bastnäsite and hematite,likely through chemisorption;whereas for quartz,the minimum micro flotation recovery is likely due to no adsorption of IL on its *** flotation re sults show higher collectability of [N_(2222)] [eHeHP] for hematite than bastnasite,the latter only shows appreciable recovery at pH 5 with elevated dosage of IL(500 g/t).To achieve better separation,a two-stage flotation scheme was designed and evaluated by bench scale flotation on a synthetic mineral *** concentrates and tails were analyzed by magnetic separation,and it is found that bastnasite recovery over 90% with maximum upgrade ratio 1.7 can be achieved with elevated collector dosage.

关键词： Ionic liquid rare earth Bastnasite Flotation FT-Ir Zeta potential

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Computer simulation of the cluster destruction of stratospheric ozone by bromine

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Chinese Physics B 2012年第11期21卷 198-207页

作者： A.e.Galashev O.r.rakhmanova Institute of Industrial ecology Ural BranchRussian Academy of Sciences 620990

The interaction of （Br-）i（H2O）50-i, 0 ≤ i ≤ 6 clusters with oxygen and ozone molecules is investigated by the method of molecular dynamics simulation. The ozone molecules as well as the bromine ions do not leave the cluster during the calculation of 25 ps. The ability of the cluster containing molecular oxygen to absorb the infrared （Ir） radiation is reduced in the frequency range of 0≤ w ≤ 3500 cm-1 when the number of the bromine ions in the cluster grows. The intensity of the raman spectrum is not changed significantly when the Brions are added to the ozone- containing system. The power of the emitted Ir radiation is increased when the number of bromine ions grows in the oxygen-containing system. The data obtained in this study on the Ir and the raman spectra of the water clusters that contain ozone, oxygen, and Br- can be used to develop an investigation of the mechanisms of ozone depletion.

关键词： bromine ion water cluster ozone infrared and raman spectra

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北京谱仪Ⅲ实验发现的新强子

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Science Bulletin 2023年第19期68卷 2148-2150,M0003页

作者：刘智青 ryan e.mitchell Institute of Frontier and Interdisciplinary Science Shandong UniversityJinan 250100China Department of Physics Indiana UniversityBloomington IN 47401USA

The Beijing Spectrometer(BeSⅢ)experiment,which has been studying particle collisions produced by the Beijing electron Positron Collider(BePCⅡ)since 2009,has so far discovered a total of 26 new particle candidates(Fig.1).The particles,all strongly-interacting hadrons,are thought to be composed of quarks(q),antiquarks(q),and gluons(g)bound together by the strong force in a surprising variety of *** their properties provides new insight into the complex nature of nuclear interactions and has been one of the central goals of the BeSIII Collaboration,which consists of an international team of more than 600 *** several of the newly discovered hadrons are consistent with the conventional two-quark picture of mesons(qq)or the three-quark picture of baryons(qqq),and were expected,others are more surprising and have exotic configurations,such as tetraquarks(qqqq),meson molecules(qq()qq()),glueballs(gg),or hybrid mesons(qgq).They have led to new advances in our theoretical understanding of the strong force,for example through the development of new approaches in quantum field theory[1]or understanding the importance of hadron molecules[2],and have initiated intense experimental effort[3].In the following,we briefly tour the 26 new hadrons,roughly from the heaviest to the *** names appear in boldface the first time they are mentioned.

关键词： quark meson 强子

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Mechanical properties of Ga_xIn_(1-x)As_yP_(1-y)/GaAs system at different temperatures and pressures

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Chinese Physics B 2015年第9期24卷 313-318页

作者： A.r.Degheidy e.B.elkenany Department of Physics Faculty of ScienceMansoura University

The mechanical properties, such as the elastic constants C11, C12, C44, and bulk, Young＇s, and shear moduli, of a Ga x In1-x As y P1-y alloy lattice matching to a Ga As substrate are calculated for various As concentrations. The calculations are based on the pseudo-potential method within the virtual crystal approximation containing the effective disorder potential. The variations of the studied properties with pressure and temperature are investigated. A comparison between the calculated results and the available published data for binary parent compounds shows that they have good agreement,while the calculated results for the quaternary alloys at various temperature and pressure may be taken as a reference.

关键词： elastic constants temperature and pressure electronic band gaps

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Study of BeSIII trigger efficiencies with the 2018 J/ψ data

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Chinese Physics C 2021年第2期45卷 48-55页

作者： M.Ablikim M.N.Achasov P.Adlarson S.Ahmed M.Albrecht r.Aliberti A.Amoroso M.r.An Q.An X.H.Bai Y.Bai O.Bakina r.Baldini Ferroli I.Balossino Y.Ban K.Begzsuren N.Berger M.Bertani D.Bettoni F.Bianchi J.Bloms A.Bortone I.Boyko r.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.Chelkov D.Y.Chen G.Chen H.S.Chen M.L.Chen S.J.Chen X.r.Chen Y.B.Chen Z.J Chen W.S.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai X.C.Dai A.Dbeyssi r.e.de Boer 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 X.Dong S.X.Du Y.L.Fan J.Fang S.S.Fang Y.Fang r.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng M.Fritsch C.D.Fu Y.Gao Y.Gao Y.Gao Y.G.Gao I.Garzia P.T.Ge C.Geng e.M.Gersabeck A Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu S.Gu Y.T.Gu C.Y Guan A.Q.Guo L.B.Guo r.P.Guo Y.P.Guo A.Guskov T.T.Han W.Y.Han X.Q.Hao F.A.Harris H Hüsken K.L.He F.H.Heinsius C.H.Heinz T.Held Y.K.Heng C.Herold M.Himmelreich T.Holtmann Y.r.Hou Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang L.Q.Huang X.T.Huang Y.P.Huang Z.Huang T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad S.Jaeger S.Janchiv Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.B.Jiang X.S.Jiang J.B.Jiao Z.Jiao S.Jin Y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang r.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz P.Kiese r.Kiuchi r.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.G.Kurth W.Kühn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi Z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.Li H.B.Li H.J.Li J.L.Li J.Q.Li J.S.Li Ke Li L.K.Li Lei Li P.r.Li S.Y.Li W.D.Li W.G.Li X.H.Li X.L.Li Z.Y.Li H.Liang H.Liang H.Liang Y.F.Liang Y.T.Liang L.Z.Liao J.Libby C.X.Lin B.J.Liu C.X.Liu D.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.L.Liu J.Y.Liu K.Liu K.Y.Liu Ke Liu L.Liu M.H.Liu P.L.Liu Q.Liu Q.Liu S.B.Liu Shuai Liu T.Liu W.M.Liu X.Liu Y.Liu Y.B.Liu Z.A.Liu Z.Q.Liu X.C.Lou F.X.Lu H.J.Lu J.D.Lu J.G.Lu X.L.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo b P.W.Luo T.Luo X.L.Luo S 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 GIBudker 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 (A)INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly (A)INFN Sezione di Ferrara I-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Ave54BUlaanbaatar 13330Mongolia Jilin University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen IIPhysikalisches InstitutHeinrich-Buff-Ring 16D-35392GiessenGermany KVI-CArT University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China Liaoning Normal Unive

Using a dedicated data sample taken in 2018 on the J/ψpeak,we perform a detailed study of the trigger efficiencies of the BeSIII *** efficiencies are determined from three representative physics processes,namely Bhabha scattering,dimuon production and generic hadronic events with charged *** combined efficiency of all active triggers approaches 100%in most cases,with uncertainties small enough not to affect most physics analyses.

关键词： BeSIII trigger efficiency Bhabha dimuon hadronic events

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