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Journal of Hydrodynamics 2024年第1期36卷 119-129页

作者： jia-jia qin Ming-xin Zou Yuan Zhuang De-cheng Wan Computational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Wuhan Second Ship Design and Research Institute Wuhan430205China

The flow around a circular cylinder for Re=1000 is characterized by flow separation and Karman vortex *** typical flow features can be captured to study the correlation between fluid fields and sound *** this paper,the three-dimensional circular cylinder is taken as the research object,and the probes of surface fluctuating pressure and far field sound pressure are arranged every 10°.The directional diagram and the coherence of fluctuating pressure and sound pressure are *** relationship between the flow mode and hydrodynamic noise is studied by using dynamic mode decomposition(DMD).The characteristics of the dipole and quadrupole sound source term of a long span cylinder are *** results show that at the angles between 30°–120°and 190°–350°,the fluctuating pressure contributes more to the generation of dipole *** quadrupole sound source shows three-dimensional effects,which is more obvious in a cylinder with large spanwise length.

关键词： Pressure coherence dynamic mode decomposition flow-sound correlation circular cylinder

Identification of deuterons at BESIII

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Chinese Physics C 2024年第1期48卷 1-6页

作者：王维郑波秦佳佳王至勇 University of South China Hengyang 421001China Key Laboratory of Advanced Nuclear Energy Design and Safety Ministry EducationHengyang 421001China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

The identification of deuterons with momenta in the range of 0.52−0.72 GeV/c is studied with specific ionization energy loss information using a data sample collected by the BESIII detector at center-of-mass energies between 4.009 and 4.946 *** deuteron samples are selected using time of flight *** all data samples,the deuteron identification efficiencies are higher than 95%,with a maximum difference of%between data and Monte Carlo *** verifies the effectiveness of the deuteron identification method based on specific ionization energy loss and provides valuable information for future studies on processes involving deuterons in the final state at BESIII.

关键词： specific ionization energy loss BESIII identification of deuterons particle identification efficiency

Prospects of CP violation inΛdecay with a polarized electron beam at the STCF

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Chinese Physics C 2023年第11期47卷 1-6页

作者：曾胜徐月周小蓉秦佳佳郑波 University of South China Hengyang 421001China Department of Physics Liaoning UniversityShenyang 110036China School of Physical Sciences University of Science and Technology of ChinaHefei 230026China

Based on 1.89×10^(8) J/ψ→ΛΛ Monte Carlo(MC)events produced from a longitudinally-polarized electron beam,the sensitivity of the CP violation of A decay is studied using fast simulation *** addition,the J/ψ→ΛΛ decay can be used to optimize the detector response using the interface provided by the fast simulation *** the future,the STCF is expected to obtain 3.4 trillion J/ψevents,and the statistical sensitivity of the CP violation of A decay via the J/ψ→ΛΛ process is expected to reach O(10^(-5))when the electron beam polarization is 80%.

关键词： CP violation electron beam polarized STCF

Explore the mechanism of Yueju pill in treating depressive polycystic ovary syndrome based on internet pharmacology

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Psychosomatic Medicine Research 2020年第3期2卷 81-96页

作者： Jing-Jing Gao Hai-Quan Liu Yan-Jin Fu qing-Yu Li Wan-Jun Ming Lin-Liang Song jia-jia qin School of traditional Chinese medicine Jinan UniversityGuangzhouP.R.China Huizhou Hospital of Guangzhou University of Chinese Medicine HuizhouP.R.China.

Background:This study aimed to identify the main active components,targets and pathways of Yueju pill,explore its mechanism in the treatment of depressive polycystic ovary syndrome,so as to provide proofs for expanding the clinical application of Yueju ***:The active components and targets of Yueju pill were retrieved from the traditional Chinese medicine system pharmacology(TCMSP)database and analysis *** and OMIM were used to search the disease targets of polycystic ovary syndrome and *** intersection genes of drug and disease were obtained via *** 11.0 was adopted to construct PPI network,then we obtained the hub genes with *** Cytoscape 3.7.2 to construct the"drug-disease-active ingredientsproteins"***,the Bioconductor tools of gene ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)were applied to the enrichment of biological functions and ***:There were 37 compounds in the prescription of Yueju pill,and 83 intersection genes of Yueju pill and *** significant genes were IL6,VEGFA,EGF,MAPK1,ESR1,MAPK8,EGFR and *** the enrichment of GO and KEGG,we found 106 biological processes and 129 signaling pathways were related to the treatment of depressive polycystic ovary syndrome with Yueju ***:Our study could provide sufficient data in supporting Yueju pill to treat polycystic ovary syndrome,while the purpose of anti-depression should be achieved by relieving the systemic *** study would provide fresh insights for expanding the clinical application of Yueju pill.

关键词： Depression Polycystic Ovary Syndrome Medicine Chinese Traditional Molecular Mechanisms of Pharmacological Action

Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min qin Zhongliang Li Wen‑Xia Su jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

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白粉菌的一个新种

微生物学报 1980年第2期 122-123页

作者：陶家凤秦家忠沈言章四川农学院

1977年11月在四川雅安的一种豆科植物——波叶山蚂蝗(Desmod(?)um stnuatum Bl.)上采集到白粉菌科球针壳属(Phyllacttnia)的一个新种,定名为山蚂蝗球针壳(*** Tao,qin et Shen ***.)。

关键词：球针壳属平均白粉菌科子囊壳

Dynamic soil-tunnel interaction in layered half-space for incident plane SH waves

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Earthquake Engineering and Engineering Vibration 2016年第4期15卷 715-727页

作者： Fu jia Liang jianwen qin Lin State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University Department of Civil Engineering Tianjin University

The dynamic soil-tunnel interaction is studied by indirect boundary element method （IBEM）, using the model of a rigid tunnel in layered half-space, which is simplified to a single soil layer on elastic bedrock, subjected to incident plane SH waves. The accuracy of the results is verified through comparison with the analytical solution. It is shown that soil-tunnel interaction in layered half-space is larger than that in homogeneous half-space and this interaction mechanism is essentially different from that of soil-foundation-superstructure interaction.

关键词： underground tunnel layered half-space plane SH wave indirect boundary element method soil-tunnel interaction site dynamic characteristics

Analysis of current induced by long internal solitary waves in stratified ocean

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Acta Mechanica Sinica 2010年第5期26卷 653-660页

作者： Hui-qin Zhang jia-Chun Li Laboratory of Environmental Mechanics Institute of Mechanics Chinese Academy of SciencesBeijing 100190 China

An approximate theoretical expression for the current induced by long internal solitary waves is presented when the ocean is continuously or two-layer stratified. Particular attention is paid to characterizing velocity fields in terms of magnitude, flow components, and their temporal evolution/spatial distribution. For the two-layer case, the effects of the upper/lower layer depths and the relative layer density difference upon the induced current are further studied. The results show that the horizontal components are basically uniform in each layer with a shear at the interface. In contrast, the vertical counterparts vary monotonically in the direction of the water depth in each layer while they change sign across the interface or when the wave peak passes through. In addition, though the vertical components are generally one order of magnitude smaller than the horizontal ones, they can never be neglected in predicting the heave response of floating platforms in gravitationally neutral balance. Comparisons are made between the partial theoretical results and the observational field data. Future research directions regarding the internal wave induced flow field are also indicated.

关键词： Induced current Internal solitary waves Stratified flow Two-layer fluid Asymptotic analysis

Modified constriction particle swarm optimization algorithm

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Journal of Systems Engineering and Electronics 2015年第5期26卷 1107-1113页

作者： Zhe Zhang Limin jia Yong qin Traffic and Transportation School Beijing Jiaotong University State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing Research Center of Urban Traffic Information Sensing and Service Technologies Beijing Jiaotong University

To deal with the demerits of constriction particle swarm optimization(CPSO), such as relapsing into local optima, slow convergence velocity, a modified CPSO algorithm is proposed by improving the velocity update formula of CPSO. The random velocity operator from local optima to global optima is added into the velocity update formula of CPSO to accelerate the convergence speed of the particles to the global optima and reduce the likelihood of being trapped into local optima. Finally the convergence of the algorithm is verified by calculation examples.

关键词： particle swarm optimization random speed operator convergence global optima

GGC:Gray-Granger Causality Method for Sensor Correlation Network Structure Mining on High-Speed Train

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Tsinghua Science and Technology 2022年第1期27卷 207-222页

作者： Jie Man Honghui Dong Limin jia Yong qin the State Key Laboratory of Rail Traffic Control and Safety and Beijing Research Center of Urban Traffic Information Sensing and Service TechnologiesBeijing Jiaotong UniversityBeijing 100044China

Vehicle information on high-speed trains can not only determine whether the various parts of the train are working normally,but also predict the train’s future operating *** to obtain valuable information from massive vehicle data is a difficult ***,we divide the vehicle data of a high-speed train into 13 subsystem datasets,according to the functions of the collection ***,according to the gray theory and the Granger causality test,we propose the Gray-Granger Causality(GGC)model,which can construct a vehicle information network on the basis of the correlation between the collection *** using the complex network theory to mine vehicle information and its subsystem networks,we find that the vehicle information network and its subsystem networks have the characteristics of a scale-free *** addition,the vehicle information network is weak against attacks,but the subsystem network is closely connected and strong against attacks.

关键词： vehicle information network structure mining gray theory Granger causality theory complex network theory high-speed train