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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

Description of martensitic transformation kinetics in Fe-c-X(X = Ni,cr,Mn,Si) system by a modified model

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1026-1036页

作者： Xiyuan geng Hongcan chen Jingjing Wang Yu Zhang qun Luo qian Li State Key Laboratory of Advanced Special Steels&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Ansteel Beijing Research Institute co. LtdBeijing 102211China National Engineering Research center for Magnesium Alloys Chongqing UniversityChongqing 400044China college of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Key Laboratory of Advanced casting Technologies Chongqing UniversityChongqing 400044China

controlling the content of athermal martensite and retained austenite is important to improving the mechanical properties of high-strength steels,but a mechanism for the accurate description of martensitic transformation during the cooling process must be *** present,frequently used semi-empirical kinetics models suffer from huge errors at the beginning of transformation,and most of them fail to exhibit the sigmoidal shape characteristic of transformation *** describe the martensitic transformation process accurately,based on the Magee model,we introduced the changes in the nucleation activation energy of martensite with temperature,which led to the varying nucleation rates of this model during martensitic *** to the calculation results,the relative error of the modified model for the martensitic transformation kinetics curves of Fe-c-X(X = Ni,cr,Mn,Si) alloys reached 9.5% compared with those measured via the thermal expansion *** relative error was approximately reduced by two-thirds compared with that of the Magee *** incorporation of nucleation activation energy into the kinetics model contributes to the improvement of its precision.

关键词： Fe-c-X system martensitic transformation kinetics curve semi-empirical model nucleation activation energy

Interconnected microstructure and flexural behavior of Ti_(2)c-Ti composites with superior Young’s modulus

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International Journal of Minerals,Metallurgy and Materials 2024年第9期31卷 2088-2101页

作者： Fengbo Sun Rui Zhang Fanchao Meng Shuai Wang Lujun Huang Lin geng School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Waikato centre for Advanced Materials and Manufacturing School of EngineeringUniversity of WaikatoHamilton 3240New Zealand State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001China

To enhance the Young’s modulus(E)and strength of titanium alloys,we designed titanium matrix composites with intercon-nected microstructure based on the Hashin-Shtrikman *** to the results,the in-situ reaction yielded an interconnected microstructure composed of Ti_(2)c particles when the Ti_(2)c content reached 50vol%.With widths of 10 and 230 nm,the intraparticle Ti lamellae in the prepared composite exhibited a bimodal size distribution due to precipitation and the unreacted Ti phase within the grown Ti_(2)c *** composites with interconnected microstructure attained superior properties,including E of 174.3 GPa and ultimate flexural strength of 1014 *** with that of pure Ti,the E of the composite was increased by 55% due to the high Ti_(2)c content and interconnected *** outstanding strength resulted from the strong interfacial bonding,load-bearing capacity of interconnected Ti_(2)c particles,and bimodal intraparticle Ti lamellae,which minimized the average crack driving *** flexural tests revealed preferential crack initiation along the{001}cleavage plane and grain boundary of Ti_(2)c in the region with the highest tensile *** addition,the propagation can be efficiently inhibited by interparticle Ti grains,which prevented the brittle fracture of the composites.

关键词： titanium matrix composites titanium carbide interface Young’s modulus flexural behavior

High-performance Ti_(3)c_(2)T_(x)achieved by polyaniline intercalation and gelatinization as a high-energy cathode for zinc-ion capacitor

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Nano Research 2024年第6期17卷 5305-5316页

作者： Peng Liao ZiYu geng Xin Zhang Wenjie Yan Zenghui qiu Haijun Xu college of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China

The actual manufacture of supercapacitors(Scs)is restricted by the inadequate energy density,and the energy density of devices can be properly promoted by assembling zinc-ion capacitors(ZIcs)which used capacitive cathode and battery-type ***-dimensional(2D)MXene has brought great focuses in the electrode research on the foundation of large redox-active surface,but the specific capacitance is still affected by the tight stacking of ***_(3)c_(2)T_(x)@polyaniline(PANI)heterostructures are prepared by uniformly depositing the conductive polymer PANI nanorods as the intercalation agent into the external of Ti_(3)c_(2)T_(x)nanosheets to inhibit ***,by using graphene oxide(GO)-assisted low-temperature hydrothermal self-assembly manufacture,2D heterostructures are assembled into the three-dimensional(3D)porous crosslinked Ti_(3)c_(2)T_(x)@PANI-reduced graphene oxide(RGO)*** to the synergistic work of PANI nanorods,Ti_(3)c_(2)T_(X)nanosheets,and 3D crosslinking frameworks of RGO to match capacitive and battery effects,3D porous hierarchical Ti_(3)c_(2)T_(x)@PANI-RGO heterostructure hydrogels have rich ion transport channels,a large number of active sites,and excellent reaction *** is assembled by using Ti_(3)c_(2)T_(x)@PANI-RGO heterostructure hydrogels as cathodes and zinc foil as *** this work,Ti_(3)c_(2)T_(x)@PANI-RGO//Zn ZIc exhibits a wide working window(2.0 V),marked specific capacitance(589.89 F·g^(−1)at 0.5 A·g−1),salient energy density(327.71 Wh·kg^(−1)at 513.61 W·kg^(−1)and 192.20 Wh·kg^(−1)at 13,005.87 W·kg^(−1)),and durable cycling stability(97.87%capacitance retention after 10,000 cycles at 10 A·g^(−1)).This study emphasizes the device design of ZIcs and the broad prospect of Ti_(3)c_(2)T_(x)-based hydrogels as viable cathodes for ZIcs.

关键词： polyaniline(PANI) Ti_(3)c_(2)T_(x)@PANI heterostructure intercalation process three-dimensional(3D)porous hydrogel high energy density zinc-ion capacitor

Direct detection of c9orf72 hexanucleotide repeat expansions by nanopore biosensor

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chinese chemical Letters 2024年第5期35卷 351-354页

作者： Xinqiong Li Guocheng Rao Xi Peng chan Yang Yanjing Zhang Yan Tian Xianghui Fu Jia geng State Key Laboratory of Biotherapy and cancer center West China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengdu 610041China Division of Endocrinology and Metabolism West China School of Medicine/West China HospitalSichuan UniversityChengdu 610041China Department of Endocrinology and Metabolism Affiliated Hospital of North Sichuan Medical CollegeNorth Sichuan Medical CollegeNanchong 637000China Division of Endocrinology and Metabolism National Clinical Research Center for GeriatricsState Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengdu 610041China Department of Laboratory Medicine State Key Laboratory of BiotherapyMed-X Center for ManufacturingWest China HospitalSichuan University and Collaborative Innovation CenterChengdu 610041China Tianfu Jincheng Laboratory City of Future MedicineChengdu 641400China

Diagnostic c9orf72 hexanucleotide repeat expansions(c9-HRE)is essential for the early and accurate diagnosis of amyotrophic lateral sclerosis(ALS)and will provide support for the prognosis and gene therapy of *** the present study,by combining catalytic hairpin assembly(cHA)with Mycobacterium smegmatis porin A(MspA)nanopore,a new nanopore-based strategy for the detection of c9-HRE was *** than 30 repeats of c9-HRE could be detected via this method,and the results have the potential to help distinguish between patients and healthy ***,the method demonstrated its great specificity for c9-HRE by identifying other repeat *** the high selectivity,this approach had been successfully used to detect c9-HRE in cell and blood samples with high *** detection strategy is user-friendly and has a strong anti-interference ability,thus providing a powerful tool for clinical diagnosis.

关键词： MspA nanopore c9orf72 HRE Detection Biosensor catalytic hairpin assembly

Interstitial carbon induces enriched cu^(δ+) sites in cu_(2)O nanoparticles to facilitate cO_(2) electroreduction to c_(2+) products

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Nano Research 2024年第8期17卷 7013-7019页

作者： Haoran Wang Rongbo Sun Peigen Liu Haohui Hu chen Ling Xiao Han Yi Shi Xusheng Zheng geng Wu Xun Hong center of Advanced Nanocatalysis(cAN) Department of Applied ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Sinochem Holdings co Ltd Xiongan New AreaHebei 071700China National Synchrotron Radiation Laboratory(NSRL) University of Science and Technology of ChinaHefei 230029China

The electrochemical cO_(2) reduction reaction(cO_(2)RR)holds significant promise in advancing carbon *** catalysts for the electrochemical cO_(2)RR to multi-carbon(c_(2+))products(e.g.,c_(2)H_(4))under industrial-level current density is urgently needed and ***,we report the cu_(2)O nanoparticles doped with interstitial carbon atoms(denoted as c-cu_(2)O NPs)for the conversion of cO_(2) to c_(2+)*** interstitial carbon promotes the c-cu_(2)O NPs to possess abundant unsaturated cu–O bonds,leading to a high-density cu^(δ+)(0c-cu_(2)O NPs exhibited significant Faradic efficiency(FE)of c_(2+) products approaching 76.9%and a partial current density reaching 615.2 mA·cm^(–2)under an industrial-level current density of 800 mA·cm^(–2).Furthermore,the efficient electrosynthesis of c_(2)H_(4) achieved an FE of 57.4%with a partial current density of 459.2 mA·cm^(–2).In situ electrochemical attenuated total reflection Fourier transform infrared spectroscopy and in situ Raman spectroscopy analyses revealed that c-cu_(2)O NPs stabilized the intermediate*cO and facilitated c–c coupling,leading to increased selectivity towards c_(2+) products.

关键词： cO_(2) electroreduction c-c coupling interstitial carbon *cO coverage industrial-level current density

Dynamic kinetic stereodivergent transformations of propargylic ammonium salts via dual nickel and copper catalysis

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chinese chemical Letters 2024年第8期35卷 265-269页

作者： Ruilong geng Lingzi Peng chang Guo Hefei National Laboratory for Physical Sciences at the Microscale and Department of chemistry University of Science and Technology of ChinaHefei 230026China

The dynamic kinetic asymmetric transformation of racemic propargylic ammonium salts with prochiral aldimine esters through a stereodivergent propargylation is catalyzed by dual nickel and copper ***,a diverse range of optically activeα-quaternary amino esters were produced via c-N bond cleavage with high reaction efficiency and stereoselectivity(up to>99%ee).By selection of the appropriate pair-wise combination of catalyst configurational isomers,all four possible stereoisomers of the corresponding propargylation products are obtained in high yields with excellent regio-,diastereo-,and enantioselectiv-ities.

关键词： Stereodivergent propargylation Dual catalysis c-N bond cleavage Azaomethine ylides Internal propargylic ammonium salts Excellent stereoselectivity

client selection and resource scheduling in reliable federated learning for UAV-assisted vehicular networks

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cHINESE JOURNAL OF AERONAUTIcS 2024年第9期37卷 328-346页

作者： Zhao, Hongbo geng, Liwei Feng, Wenquan Zhou, changming Beihang Univ Sch Elect & Informat Engn Beijing 100191 Peoples R China

Federated Learning (FL), a promising deep learning paradigm extensively deployed in Vehicular Edge computing Networks (VEcN), allows a distributed approach to train datasets of nodes locally, e.g., for mobile vehicles, and exchanges model parameters to obtain an accurate model without raw data transmission. However, the existence of malicious vehicular nodes as well as the inherent heterogeneity of the vehicles hinders the attainment of accurate models. Moreover, the local model training and model parameter transmission during FL exert a notable energy burden on vehicles constrained in resources. In view of this, we investigate FL client selection and resource management problems in FL-enabled UAV-assisted Vehicular Networks (FLVN). We first devise a novel reputation-based client selection mechanism by integrating both data quality and computation capability metrics to enlist reliable high-performance vehicles. Further, to fortify the FL reliability, we adopt the consortium blockchain to oversee the reputation information, which boasts tamper-proof and interference-resistant qualities. Finally, we formulate the resource scheduling problem by jointly optimizing the computation capability, the transmission power, and the number of local training rounds, aiming to minimize the cost of clients while guaranteeing accuracy. To this end, we propose a reinforcement learning algorithm employing an asynchronous parallel network structure to achieve an optimized scheduling strategy. Simulation results show that our proposed client selection mechanism and scheduling algorithm can realize reliable FL with an accuracy of 0.96 and consistently outperform the baselines in terms of delay and energy consumption. (c) 2024 Production and hosting by Elsevier Ltd. on behalf of chinese Society of Aeronautics and Astronautics. This is an open access article under the cc BY-Nc-ND license (http://***/ licenses/by-nc-nd/4.0/).

关键词： Federated learning Vehicular edge computing Resource management Reinforcement learning Optimization techniques EFFIcIENT ALLOcATION cOMMUNIcATION OPTIMIZATION NAVIGATION INTERNET

Radiative decays D*(s)→ D(s)γ in covariant confined quark model

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chinese Physics c 2024年第2期48卷 45-56页

作者： c.T.Tran M.A.Ivanov P.Santorelli q.c.Vo Department of Physics HCMC University of Technology and EducationVo Van Ngan 1700000 Ho Chi Minh CityVietnam Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear Research141980 DubnaRussia Dipartimento di Fisica"E.Pancini" Universitàdi Napoli Federico ⅡComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126 NapoliItaly Istituto Nazionale di Fisica Nucleare Sezione di Napoli80126 NapoliItaly University of Science 700000 Ho Chi Minh CityVietnam

Radiative decays D((s))*→D((s))γare revisited in light of new experimental data from the BaBar and BESⅢ*** radiative couplings gD*Dγencoding nonperturbative qcD effects are calculated in the framework of the covariant confined quark model developed by *** compare our results with other theoretical studies and experimental *** couplings(in GeV-1)|g(D*+D+γ)|=0.45(9)and|g(D*0D0γ)|=1.72(34)calculated in our model agree with the corresponding experimental data|g(D*+D+γ)|=0.47(7)and|g(D*0D0γ)|=1.77(16).The most interesting case is the decay Ds*→Dsγ,for which a recent prediction based on light-cone sum rules at next-to-leading order|gDs*Dsγ|=0.60(19)deviates from the first(and only to date)lattice qcD result|gDs*Dsγ|=0.11(2)at nearly3σ.Our calculation yields|gDs*Dsγ|=0.29(6),which falls somehow between the two mentioned results,although it is larger than those predicted in other studies using quark models or qcD sum rules.

关键词： covariant quark model radiative decay charmed meson