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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.fen. 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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Precipitation transformation pathway and mechanical behavior of nanoprecipitation strengthened Fe-Mn-Al-c-Ni austenitic low-density steel

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Journal of Materials Science & Technology 2024年第7期174卷 157-167页

作者： Y.F.An X.P.chen L.Mei P.Ren D.Wei W.q.cao college of Materials Science and Engineering Chongqing UniversityChongqing 400044China guangxi Engineering Research center for characteristic Metallic Powder Materials School of Electronic EngineeringGuangxi University of Science and TechnologyLiuzhou 545006China central Iron&Steel Research Institute Beijing 100081China

Precipitation strengthening has been widely adopted in austenitic low-density steel owing to excellent hardened *** approach generally employs the coherentκ′carbides and non-coherent B2 *** the precipitation transformation pathway is decisive for further optimizing the microstructures under specific engineering ***,the detailed precipitation sequence of Fe-28Mn-11Al-1c-5Ni(wt%)austenitic low-density steel as well as its influence on mechanical prop-erties during aging process is systematically *** results reveal that nano-sizedκ′carbides domains(2 nm)exist in the solution-treated *** aging at 500℃for 1 h,the cuboidalκ′carbides(15-20 nm)uniformly disperse in austenite ***,after aging at 700℃for 15 min,the coarsenκ′carbides(30-35 nm)inhomogeneously distribute and align preferentially along the〈100〉***,extending the aging time to 60 min,the needle-type B2 particles replace theκ′carbides due to the enrichment of Ni elements at the phase boundaries among the austenite andκ′*** aging at 900℃,κ′carbides entirely dissolve into the austenite matrix,and the intragranular B2 particles are the sole precipitates in the austenite matrix and follow the K-S orientation relationship with *** work hardening capability seriously deteriorates due to the shearing ofκ′carbides by gliding *** the intragranular B2 particles preserve excellent work hardening rate by dislocations bow-out *** present work is meaningful for guiding the design of new generation dual-nano precipitation austenitic lightweight steel.

关键词： Lightweight steel κ′-carbides B2 particles Work hardening capability

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Resistive field generation in intense proton beam interaction with solid targets

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Matter and Radiation at Extremes 2024年第1期9卷 35-43页

作者： W.q.Wang J.J.Honrubia Y.Yin X.H.Yang F.q.Shao Department of Physics National University of Defense TechnologyHunanChina ETSI Aeronáutica y del Espacio Universidad Politécnica de MadridMadridSpain Department of Nuclear Science and Technology National University of Defense TechnologyHunanChina

The Brown-Preston-Singleton(BPS)stopping power model is added to our previously developed hybrid code to model ion beam-plasma *** simulations show that both resistive field and ion scattering effects are important for proton beam transport in a solid target,in which they compete with each *** the target is not completely ionized,the self-generated resistive field effect dominates over the ion scattering ***,when the target is completely ionized,this situation is ***,it is found that Ohmic heating is important for higher current densities and materials with high *** energy fraction deposited as Ohmic heating can be as high as 20%-30%.Typical ion divergences with half-angles of about 5°-10°will modify the proton energy deposition substantially and should be taken into account.

关键词： interaction beam intense

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轴重和频率对激光修复316L不锈钢涂层在铁路车轮踏面制动中摩擦学性能的影响

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表面工程与再制造 2024年第2期24卷 51-52页

作者： Li S. Xiao q. Yang W. Yang c. Wang Y. State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure East China Jiaotong University Nanchang 330013 China School of Mechatronics and Vehicle Engineering East China Jiaotong University Nanchang 330013 China Railway Industry Key Laboratory of Intelligent Operation and Maintenance of Rolling Stock East China Jiaotong University Nanchang 330013 China

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用MS-HT1000高温磨损试验机进行磨损实... 详细信息

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用MS-HT1000高温磨损试验机进行磨损实验。然后,分析不同制动条件对修复试样在室温和高温下摩擦磨损性能的影响。

关键词：激光修复铁路车轮局部损伤磨损实验车轮踏面磨损试验机服役性能踏面制动

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深圳市24家医院极/超早产儿产房过渡期管理的横断面调查

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中国当代儿科杂志 2024年第3期26卷 250-257页

作者：无吴本清杨传忠深圳新生儿数据协作网深圳市光明区人民医院深圳市妇幼保健院

目的了解深圳市极/超早产儿产房过渡期管理实施现状。方法2022年11月对深圳新生儿数据协作网的24家三级医院的极/超早产儿产房过渡期管理实施情况进行横断面调查,调查内容包括产前准备、产房复苏实施和新生儿重症监护室复苏后管理。根... 详细信息

目的了解深圳市极/超早产儿产房过渡期管理实施现状。方法2022年11月对深圳新生儿数据协作网的24家三级医院的极/超早产儿产房过渡期管理实施情况进行横断面调查,调查内容包括产前准备、产房复苏实施和新生儿重症监护室复苏后管理。根据胎龄将所纳入早产儿分为4组:<26周、26~28^(+6)周、29~30^(+6)周和31~31^(+6)周组,对结果进行描述性分析。结果共纳入140例极/超早产儿,其中<26周组10例,26~28^(+6)周组45例,29~30^(+6)周组49例,31~31^(+6)周组36例。140例极/超早产儿中,99例(70.7%)接受了产前咨询,提供产前咨询的人员以产科医生为主,占比为79.8%;产时参与复苏的人员主要为助产士(96.4%)和新生儿科住院医师(62.1%);52例(37.1%)实施了延迟脐带结扎,平均延迟时间为(45±17)s;137例(97.9%)生后采用了预热辐射台保暖;110例(78.6%)需要正压通气,其中67例(60.9%)采用T组合复苏器,42例(38.2%)应用了空氧混合仪;119例(85.0%)复苏中进行了血氧饱和度监测;完成过渡期各项措施至关闭温箱门时间的中位数为87min。结论在深圳新生儿数据协作网医院中,极/超早产儿的产房过渡期管理实施与我国相应专家共识的要求存在不同程度的差异,需要通过多中心协作的持续质量改进缩小差距,从而改善极/超早产儿产房过渡期管理的质量和结局。

关键词：过渡期管理横断面调查深圳极早产儿超早产儿

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Modulated noble metal/2D MOF heterostructures for improved hydrogen storage of MgH_(2)

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Rare Metals 2024年第4期43卷 1672-1685页

作者： Zeng-Yi Li Li-Xian Sun fen Xu Yu-Mei Luo Yong-Peng Xia Sheng Wei chen-chen Zhang Ri-guang cheng chao-feng Ye Meng-Yuan Liu Ju-Lan Zeng Zhong cao Hong-ge Pan School of Material Science and Engineering Guilin University of Electronic TechnologyGuilin541004China School of chemistry and chemical Engineering Changsha University of Science and TechnologyChangsha410114China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an710021China

The conjugation of external species with twodimensional(2D)materials has broad application *** this study,we have explored the potential of noble metal/2D MOF heterostructures in hydrogen ***,the MgH_(2)-Ni-MOF@Pd system has shown remarkable hydrogen desorption/sorption performances,starting to liberate hydrogen at 1810c,which is 2300c lower than that of pristine *** the catalytic effect of Ni-MOF@Pd,the dehydrogenation apparent activation energy of MgH2 is noticeably decreased from(133.5±17.5)to(34.58±1.87)kJ·moL^(-1),and the hydrogenation apparent activation energy is reduced from(70.41±7.43)to(25.78±4.64)kJ·moL^(-1),which is lowered by 63.4%.The fully-dehydrogenated MgH2-NiMOF@Pd composite rapidly uptakes hydrogen,with 2.62wt%at 100℃and 6.06 wt%at 150℃within 300 s,*** mechanism analysis of MgH2 catalyzed by Ni-MOF@Pd has revealed that the transformation of Mg_2Ni and Mg_2NiH_4 could act as a"hydrogen pump",providing numerous channels for fast diffusion and transport of hydrogen ***,in the dehydrogenation process,the element Pd reacts with MgH_(2)to form the MgPd alloy phase,which makes MgH_(2)take precedence to decompose through the Mg-Pd alloy rather than self-decomposition,further reducing thermal stability and improving de/hydrogenation *** synergistic effect of Mg-Pd,Mg_2Ni,and the special ultra-thin 2D sheet structure of the additive is the main reason for the good hydrogen storage property of MgH_(2)-Ni-MOF@*** findings provide inspiration for designing efficient multifunctional additives with unique morphologies to optimize the hydrogen desorption/sorption behaviors of hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride 2D metal-organic framework nanosheets Ni/Pd Synergistic catalysis

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Risk assessment,fitness cost,cross-resistance,and mechanism of tetraniliprole resistance in the rice stem borer,chilo suppressalis

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Insect Science 2024年第3期31卷 835-846页

作者： Hao Sun Shuai Wang chong Liu Wen-Kai Hu Jin-Wei Liu Ling-Jun Zheng Meng-Yue gao Fang-Rui guo Song-Tao qiao Jun-Li Liu Bo Sun cong-fen gao Shun-Fan Wu college of Plant Protection Nanjing Agricultural UniversityState&Local Joint Engineering Research Center of Green Pesticide Invention and ApplicationNanjingChina Bayer cropscience(china)co. Ltd.HangzhouChina

The rice stem borer(RSB),chilo suppressalis,a notorious rice pest in china,has evolved a high resistance level to commonly used ***,a new anthranilic diamide insecticide,effectively controls multiple pests,including ***,the potential resistance risk of RSB to tetraniliprole is still *** this study,the tetraniliprole-selection(Tet-R)strain was obtained through 10 continuous generations of selection with tetraniliprole 30%lethal concentration(Lc_(30)).The realized heritability(h^(2))of the Tet-R strain was 0.387,indicating that resistance of RSB to tetraniliprole developed rapidly under the continuous selection of *** Tet-R strain had a high fitness cost(relative fitness=0.53).We established the susceptibility baseline of RSB to tetraniliprole(lethal concentration at Lc_(50)=0.727 mg/L)and investigated the resistance level of 6 field populations to *** tested strains that had resistance to chlorantraniliprole exhibited moderate-to high-level resistance to tetraniliprole(resistance ratio=27.7-806.8).Detection of ryanodine receptor(RyR)mutations showed that the Y4667c,Y4667D,I4758M,and Y4891F mutations were present in tested RSB field *** mutations were responsible for the cross-resistance between tetraniliprole and ***,the clustered regularly interspaced palindromic repeats(cRISPR)/cRISPR-associated protein 9-mediated genome-modified flies were used to study the contribution of RyR mutations to tetraniliprole *** order of contribution of a single RyR mutation to tetraniliprole resistance was Y4667D>g4915E>Y4667c~~I4758M>*** addition,the I4758M and Y4667c double mutations conferred higher tetraniliprole resistance than single Y4667c *** results can guide resistance management practices for diamides in RSB and other arthropods.

关键词： chilo suppressalis diamide resistance fitness cost cross-resistance RyR target-site mutations

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温度作用下大跨度斜拉桥长波不平顺限值研究

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铁道工程学报 2024年第3期41卷 59-64,72页

作者：戴公连肖尧王芬饶惠明中南大学长沙410075 东南沿海铁路福建有限责任公司福州350013

研究目的:为研究大跨度斜拉桥在温度作用下的变形及其引起的长波不平顺对列车运行的影响,以泉州湾跨海钢混结合梁斜拉桥为研究对象,在其主梁截面布置温度传感器以监测主梁温度变化,利用ANSYS软件分析实测温度作用下的斜拉桥主梁竖向变形... 详细信息

研究目的:为研究大跨度斜拉桥在温度作用下的变形及其引起的长波不平顺对列车运行的影响,以泉州湾跨海钢混结合梁斜拉桥为研究对象,在其主梁截面布置温度传感器以监测主梁温度变化,利用ANSYS软件分析实测温度作用下的斜拉桥主梁竖向变形,将温度变形与轨道不平顺叠加且基于弹性系统动力学总势能不变值原理建立考虑该长波不平顺的车桥耦合模型,以研究长波不平顺对列车动力响应的影响、弦测法对其进行评价的适配性,以及温度变形极限条件下的对应限值。研究结论:(1)温度监测系统共收集了1年的温度数据,将其分解为均匀温度和线性温差后,对应的温度变化范围分别为[5.82°c,37.51°c]和[2.36°c,29.94°c],主梁主跨跨中的最大竖向位移为28.6 mm,最小竖向位移为14.1 mm;(2)相比于未考虑温度作用,考虑了温度作用引起的长波不平顺的车桥耦合振动模型得到的列车轮重减载率、竖向加速度和竖向舒适度指标均有一定增大,竖向加速度增幅最为明显;(3)考虑了因列车运行引起的桥梁动态位移的影响后,60 m弦中点弦测法依然能够很好地体现列车振动响应,与车体竖向加速度响应相关性最好;(4)通过分析60 m弦的不平顺计算结果并进行验证,可知桥塔附近是双线行车时会车的危险位置;(5)在温度变形极限条件下列车的竖向加速度达到规范限值,对应的60 m弦矢度限值为7.22 mm;(6)本研究成果可为大跨度斜拉桥长波不平顺的评测方法选取及限值要求提供参考。

关键词：斜拉桥车桥耦合温度变形长波不平顺弦测法

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冠心病的抗炎治疗:路在脚下

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中华心血管病杂志 2024年第6期52卷 585-588页

作者：余淼杨芬程翔华中科技大学同济医学院附属协和医院心内科、生物靶向治疗研究湖北省重点实验室、心血管疾病免疫诊疗湖北省工程研究中心武汉430022

近年研究发现,在积极使用降脂药物的情况下,与残余胆固醇风险相比,由超敏c反应蛋白代表的残余炎症风险是复发性心血管事件更有力的预测因素。针对冠心病残余炎症风险的抗炎治疗路途坎坷,直至2017年,3项大规模临床研究(cANTOS、cOLcOT和L... 详细信息

近年研究发现,在积极使用降脂药物的情况下,与残余胆固醇风险相比,由超敏c反应蛋白代表的残余炎症风险是复发性心血管事件更有力的预测因素。针对冠心病残余炎症风险的抗炎治疗路途坎坷,直至2017年,3项大规模临床研究(cANTOS、cOLcOT和LoDoco2)方才相继获得阳性结果。2023年,秋水仙碱成为第一个被美国食品和药品监督管理局批准用于冠心病抗炎治疗的药物,表明在冠心病治疗领域,超越单纯降脂的抗炎时代已经到来。我们相信积极降脂和抗炎的联合疗法将成为冠心病患者的标准治疗方案。

关键词：冠心病抗炎治疗秋水仙碱超敏c反应蛋白

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Ab initio valence-space in-medium similarity renormalization group calculations for neutron-rich P,cl,and K isotopes

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chinese Physics c 2024年第7期48卷 181-190页

作者：谢萌冉沈留媛李健国李红蕙袁琪左维 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Neutron-rich P,cl,and K isotopes,particularly those with neutron numbers of approximately N=28,have attracted extensive experimental and theoretical *** utilize the ab initio valence-space in-medium similarity renormalization group approach,based on chiral nucleon-nucleon and three-nucleon forces,to investigate the exotic properties of these *** calculations of the low-lying spectra are performed.A key finding is the level inversion between 3/2_(1)^(+)and 1/2_(1)^(+)states in odd-A isotopes,attributed to the inversion ofπ0xod_(3/2) andπls_(1/2) single-particle *** ab initio calculations,which incorporate the three-nucleon forces,correlate closely with existing experimental *** calculations of effective proton single-particle energies provide deeper insights into the shell evolution for Z=14 and 16 *** results indicate that the three-body force plays important roles in the shell evolution for Z=14 and 16 sub-shells with neutron numbers ranging from 20 to ***,systematic ab initio calculations are conducted for the low-lying spectra of odd-odd *** results correspond with experimental data and provide new insights for future research into these isotopes up to and beyond the drip line.

关键词： ab initio calculations shell evolution low-lying spectra

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